blob: 14d7f3599c6397a1dba915509b03a1644cc7ed2a [file] [log] [blame]
Namjae Jeone2f34482021-03-16 10:49:09 +09001// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org>
4 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
5 */
6
7#include <linux/inetdevice.h>
8#include <net/addrconf.h>
9#include <linux/syscalls.h>
10#include <linux/namei.h>
11#include <linux/statfs.h>
12#include <linux/ethtool.h>
Namjae Jeone8c06192021-06-22 11:06:11 +090013#include <linux/falloc.h>
Namjae Jeon02655a72022-04-13 10:01:36 +090014#include <linux/mount.h>
Namjae Jeone2f34482021-03-16 10:49:09 +090015
16#include "glob.h"
Namjae Jeone2f34482021-03-16 10:49:09 +090017#include "smbfsctl.h"
18#include "oplock.h"
19#include "smbacl.h"
20
21#include "auth.h"
22#include "asn1.h"
Namjae Jeone2f34482021-03-16 10:49:09 +090023#include "connection.h"
24#include "transport_ipc.h"
Hyunchul Lee03d8d4f2021-07-13 16:09:34 +090025#include "transport_rdma.h"
Namjae Jeone2f34482021-03-16 10:49:09 +090026#include "vfs.h"
27#include "vfs_cache.h"
28#include "misc.h"
29
Namjae Jeone2f34482021-03-16 10:49:09 +090030#include "server.h"
31#include "smb_common.h"
32#include "smbstatus.h"
33#include "ksmbd_work.h"
34#include "mgmt/user_config.h"
35#include "mgmt/share_config.h"
36#include "mgmt/tree_connect.h"
37#include "mgmt/user_session.h"
38#include "mgmt/ksmbd_ida.h"
39#include "ndr.h"
40
41static void __wbuf(struct ksmbd_work *work, void **req, void **rsp)
42{
43 if (work->next_smb2_rcv_hdr_off) {
Namjae Jeon8a893312021-06-25 13:43:37 +090044 *req = ksmbd_req_buf_next(work);
45 *rsp = ksmbd_resp_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +090046 } else {
Namjae Jeoncb451722021-11-03 08:08:44 +090047 *req = smb2_get_msg(work->request_buf);
48 *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +090049 }
50}
51
52#define WORK_BUFFERS(w, rq, rs) __wbuf((w), (void **)&(rq), (void **)&(rs))
53
54/**
55 * check_session_id() - check for valid session id in smb header
56 * @conn: connection instance
57 * @id: session id from smb header
58 *
59 * Return: 1 if valid session id, otherwise 0
60 */
Namjae Jeonf4228b62021-08-12 10:16:40 +090061static inline bool check_session_id(struct ksmbd_conn *conn, u64 id)
Namjae Jeone2f34482021-03-16 10:49:09 +090062{
63 struct ksmbd_session *sess;
64
65 if (id == 0 || id == -1)
Namjae Jeonf4228b62021-08-12 10:16:40 +090066 return false;
Namjae Jeone2f34482021-03-16 10:49:09 +090067
Namjae Jeonf5a544e2021-06-18 10:04:19 +090068 sess = ksmbd_session_lookup_all(conn, id);
Namjae Jeone2f34482021-03-16 10:49:09 +090069 if (sess)
Namjae Jeonf4228b62021-08-12 10:16:40 +090070 return true;
Namjae Jeonbde16942021-06-28 15:23:19 +090071 pr_err("Invalid user session id: %llu\n", id);
Namjae Jeonf4228b62021-08-12 10:16:40 +090072 return false;
Namjae Jeone2f34482021-03-16 10:49:09 +090073}
74
Namjae Jeonf5a544e2021-06-18 10:04:19 +090075struct channel *lookup_chann_list(struct ksmbd_session *sess, struct ksmbd_conn *conn)
Namjae Jeone2f34482021-03-16 10:49:09 +090076{
77 struct channel *chann;
Namjae Jeone2f34482021-03-16 10:49:09 +090078
Namjae Jeon6f3d5ee2021-06-18 10:28:52 +090079 list_for_each_entry(chann, &sess->ksmbd_chann_list, chann_list) {
Namjae Jeon560ac052021-06-22 16:16:45 +090080 if (chann->conn == conn)
Namjae Jeone2f34482021-03-16 10:49:09 +090081 return chann;
82 }
83
84 return NULL;
85}
86
87/**
Namjae Jeon5ec3df8e2021-08-12 10:17:39 +090088 * smb2_get_ksmbd_tcon() - get tree connection information using a tree id.
Hyunchul Lee95fa1ce2021-03-21 17:05:56 +090089 * @work: smb work
Namjae Jeone2f34482021-03-16 10:49:09 +090090 *
Namjae Jeon5ec3df8e2021-08-12 10:17:39 +090091 * Return: 0 if there is a tree connection matched or these are
92 * skipable commands, otherwise error
Namjae Jeone2f34482021-03-16 10:49:09 +090093 */
94int smb2_get_ksmbd_tcon(struct ksmbd_work *work)
95{
Namjae Jeoncb451722021-11-03 08:08:44 +090096 struct smb2_hdr *req_hdr = smb2_get_msg(work->request_buf);
Ralph Boehme341b1602021-10-05 07:03:40 +020097 unsigned int cmd = le16_to_cpu(req_hdr->Command);
Namjae Jeone2f34482021-03-16 10:49:09 +090098 int tree_id;
99
100 work->tcon = NULL;
Ralph Boehme341b1602021-10-05 07:03:40 +0200101 if (cmd == SMB2_TREE_CONNECT_HE ||
102 cmd == SMB2_CANCEL_HE ||
103 cmd == SMB2_LOGOFF_HE) {
Namjae Jeone2f34482021-03-16 10:49:09 +0900104 ksmbd_debug(SMB, "skip to check tree connect request\n");
105 return 0;
106 }
107
Namjae Jeon02b68b22021-04-01 17:45:33 +0900108 if (xa_empty(&work->sess->tree_conns)) {
Namjae Jeone2f34482021-03-16 10:49:09 +0900109 ksmbd_debug(SMB, "NO tree connected\n");
Namjae Jeonc6ce2b52021-08-12 10:18:18 +0900110 return -ENOENT;
Namjae Jeone2f34482021-03-16 10:49:09 +0900111 }
112
113 tree_id = le32_to_cpu(req_hdr->Id.SyncId.TreeId);
114 work->tcon = ksmbd_tree_conn_lookup(work->sess, tree_id);
115 if (!work->tcon) {
Namjae Jeonbde16942021-06-28 15:23:19 +0900116 pr_err("Invalid tid %d\n", tree_id);
Namjae Jeonc6ce2b52021-08-12 10:18:18 +0900117 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +0900118 }
119
120 return 1;
121}
122
123/**
124 * smb2_set_err_rsp() - set error response code on smb response
125 * @work: smb work containing response buffer
126 */
127void smb2_set_err_rsp(struct ksmbd_work *work)
128{
129 struct smb2_err_rsp *err_rsp;
130
131 if (work->next_smb2_rcv_hdr_off)
Namjae Jeon8a893312021-06-25 13:43:37 +0900132 err_rsp = ksmbd_resp_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +0900133 else
Namjae Jeoncb451722021-11-03 08:08:44 +0900134 err_rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900135
136 if (err_rsp->hdr.Status != STATUS_STOPPED_ON_SYMLINK) {
137 err_rsp->StructureSize = SMB2_ERROR_STRUCTURE_SIZE2_LE;
138 err_rsp->ErrorContextCount = 0;
139 err_rsp->Reserved = 0;
140 err_rsp->ByteCount = 0;
141 err_rsp->ErrorData[0] = 0;
Namjae Jeone5066492021-03-30 12:35:23 +0900142 inc_rfc1001_len(work->response_buf, SMB2_ERROR_STRUCTURE_SIZE2);
Namjae Jeone2f34482021-03-16 10:49:09 +0900143 }
144}
145
146/**
147 * is_smb2_neg_cmd() - is it smb2 negotiation command
148 * @work: smb work containing smb header
149 *
Namjae Jeonf4228b62021-08-12 10:16:40 +0900150 * Return: true if smb2 negotiation command, otherwise false
Namjae Jeone2f34482021-03-16 10:49:09 +0900151 */
Namjae Jeonf4228b62021-08-12 10:16:40 +0900152bool is_smb2_neg_cmd(struct ksmbd_work *work)
Namjae Jeone2f34482021-03-16 10:49:09 +0900153{
Namjae Jeoncb451722021-11-03 08:08:44 +0900154 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900155
156 /* is it SMB2 header ? */
157 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
Namjae Jeonf4228b62021-08-12 10:16:40 +0900158 return false;
Namjae Jeone2f34482021-03-16 10:49:09 +0900159
160 /* make sure it is request not response message */
161 if (hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR)
Namjae Jeonf4228b62021-08-12 10:16:40 +0900162 return false;
Namjae Jeone2f34482021-03-16 10:49:09 +0900163
164 if (hdr->Command != SMB2_NEGOTIATE)
Namjae Jeonf4228b62021-08-12 10:16:40 +0900165 return false;
Namjae Jeone2f34482021-03-16 10:49:09 +0900166
Namjae Jeonf4228b62021-08-12 10:16:40 +0900167 return true;
Namjae Jeone2f34482021-03-16 10:49:09 +0900168}
169
170/**
171 * is_smb2_rsp() - is it smb2 response
172 * @work: smb work containing smb response buffer
173 *
Namjae Jeonf4228b62021-08-12 10:16:40 +0900174 * Return: true if smb2 response, otherwise false
Namjae Jeone2f34482021-03-16 10:49:09 +0900175 */
Namjae Jeonf4228b62021-08-12 10:16:40 +0900176bool is_smb2_rsp(struct ksmbd_work *work)
Namjae Jeone2f34482021-03-16 10:49:09 +0900177{
Namjae Jeoncb451722021-11-03 08:08:44 +0900178 struct smb2_hdr *hdr = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900179
180 /* is it SMB2 header ? */
181 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
Namjae Jeonf4228b62021-08-12 10:16:40 +0900182 return false;
Namjae Jeone2f34482021-03-16 10:49:09 +0900183
184 /* make sure it is response not request message */
185 if (!(hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR))
Namjae Jeonf4228b62021-08-12 10:16:40 +0900186 return false;
Namjae Jeone2f34482021-03-16 10:49:09 +0900187
Namjae Jeonf4228b62021-08-12 10:16:40 +0900188 return true;
Namjae Jeone2f34482021-03-16 10:49:09 +0900189}
190
191/**
192 * get_smb2_cmd_val() - get smb command code from smb header
193 * @work: smb work containing smb request buffer
194 *
195 * Return: smb2 request command value
196 */
Namjae Jeonfc2d1b52021-05-26 18:01:08 +0900197u16 get_smb2_cmd_val(struct ksmbd_work *work)
Namjae Jeone2f34482021-03-16 10:49:09 +0900198{
199 struct smb2_hdr *rcv_hdr;
200
201 if (work->next_smb2_rcv_hdr_off)
Namjae Jeon8a893312021-06-25 13:43:37 +0900202 rcv_hdr = ksmbd_req_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +0900203 else
Namjae Jeoncb451722021-11-03 08:08:44 +0900204 rcv_hdr = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900205 return le16_to_cpu(rcv_hdr->Command);
206}
207
208/**
209 * set_smb2_rsp_status() - set error response code on smb2 header
210 * @work: smb work containing response buffer
Hyunchul Lee95fa1ce2021-03-21 17:05:56 +0900211 * @err: error response code
Namjae Jeone2f34482021-03-16 10:49:09 +0900212 */
213void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err)
214{
215 struct smb2_hdr *rsp_hdr;
216
217 if (work->next_smb2_rcv_hdr_off)
Namjae Jeon8a893312021-06-25 13:43:37 +0900218 rsp_hdr = ksmbd_resp_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +0900219 else
Namjae Jeoncb451722021-11-03 08:08:44 +0900220 rsp_hdr = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900221 rsp_hdr->Status = err;
222 smb2_set_err_rsp(work);
223}
224
225/**
226 * init_smb2_neg_rsp() - initialize smb2 response for negotiate command
227 * @work: smb work containing smb request buffer
228 *
229 * smb2 negotiate response is sent in reply of smb1 negotiate command for
230 * dialect auto-negotiation.
231 */
232int init_smb2_neg_rsp(struct ksmbd_work *work)
233{
234 struct smb2_hdr *rsp_hdr;
235 struct smb2_negotiate_rsp *rsp;
236 struct ksmbd_conn *conn = work->conn;
237
238 if (conn->need_neg == false)
239 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +0900240
Namjae Jeoncb451722021-11-03 08:08:44 +0900241 *(__be32 *)work->response_buf =
242 cpu_to_be32(conn->vals->header_size);
Namjae Jeone2f34482021-03-16 10:49:09 +0900243
Namjae Jeoncb451722021-11-03 08:08:44 +0900244 rsp_hdr = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900245 memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
Namjae Jeone2f34482021-03-16 10:49:09 +0900246 rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER;
247 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
248 rsp_hdr->CreditRequest = cpu_to_le16(2);
249 rsp_hdr->Command = SMB2_NEGOTIATE;
250 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR);
251 rsp_hdr->NextCommand = 0;
252 rsp_hdr->MessageId = 0;
253 rsp_hdr->Id.SyncId.ProcessId = 0;
254 rsp_hdr->Id.SyncId.TreeId = 0;
255 rsp_hdr->SessionId = 0;
256 memset(rsp_hdr->Signature, 0, 16);
257
Namjae Jeoncb451722021-11-03 08:08:44 +0900258 rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900259
260 WARN_ON(ksmbd_conn_good(work));
261
262 rsp->StructureSize = cpu_to_le16(65);
263 ksmbd_debug(SMB, "conn->dialect 0x%x\n", conn->dialect);
264 rsp->DialectRevision = cpu_to_le16(conn->dialect);
265 /* Not setting conn guid rsp->ServerGUID, as it
266 * not used by client for identifying connection
267 */
268 rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
269 /* Default Max Message Size till SMB2.0, 64K*/
270 rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size);
271 rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size);
272 rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size);
273
274 rsp->SystemTime = cpu_to_le64(ksmbd_systime());
275 rsp->ServerStartTime = 0;
276
277 rsp->SecurityBufferOffset = cpu_to_le16(128);
278 rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH);
Namjae Jeoncb451722021-11-03 08:08:44 +0900279 ksmbd_copy_gss_neg_header((char *)(&rsp->hdr) +
Namjae Jeone2f34482021-03-16 10:49:09 +0900280 le16_to_cpu(rsp->SecurityBufferOffset));
Namjae Jeoncb451722021-11-03 08:08:44 +0900281 inc_rfc1001_len(work->response_buf,
282 sizeof(struct smb2_negotiate_rsp) -
283 sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) +
284 AUTH_GSS_LENGTH);
Namjae Jeone2f34482021-03-16 10:49:09 +0900285 rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE;
286 if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY)
287 rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE;
288 conn->use_spnego = true;
289
290 ksmbd_conn_set_need_negotiate(work);
291 return 0;
292}
293
Namjae Jeone2f34482021-03-16 10:49:09 +0900294/**
295 * smb2_set_rsp_credits() - set number of credits in response buffer
296 * @work: smb work containing smb response buffer
297 */
298int smb2_set_rsp_credits(struct ksmbd_work *work)
299{
Namjae Jeon8a893312021-06-25 13:43:37 +0900300 struct smb2_hdr *req_hdr = ksmbd_req_buf_next(work);
301 struct smb2_hdr *hdr = ksmbd_resp_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +0900302 struct ksmbd_conn *conn = work->conn;
Namjae Jeon914d7e52021-12-29 23:10:03 +0900303 unsigned short credits_requested, aux_max;
Hyunchul Leebf8acc92021-10-07 16:26:58 +0900304 unsigned short credit_charge, credits_granted = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +0900305
Hyunchul Leebf8acc92021-10-07 16:26:58 +0900306 if (work->send_no_response)
307 return 0;
Namjae Jeone2f34482021-03-16 10:49:09 +0900308
Hyunchul Leebf8acc92021-10-07 16:26:58 +0900309 hdr->CreditCharge = req_hdr->CreditCharge;
Namjae Jeone2f34482021-03-16 10:49:09 +0900310
Namjae Jeon004443b2021-12-29 23:08:46 +0900311 if (conn->total_credits > conn->vals->max_credits) {
Hyunchul Leebf8acc92021-10-07 16:26:58 +0900312 hdr->CreditRequest = 0;
Namjae Jeonbde16942021-06-28 15:23:19 +0900313 pr_err("Total credits overflow: %d\n", conn->total_credits);
Namjae Jeone2f34482021-03-16 10:49:09 +0900314 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +0900315 }
316
Hyunchul Leebf8acc92021-10-07 16:26:58 +0900317 credit_charge = max_t(unsigned short,
318 le16_to_cpu(req_hdr->CreditCharge), 1);
Namjae Jeon914d7e52021-12-29 23:10:03 +0900319 if (credit_charge > conn->total_credits) {
320 ksmbd_debug(SMB, "Insufficient credits granted, given: %u, granted: %u\n",
321 credit_charge, conn->total_credits);
322 return -EINVAL;
323 }
324
325 conn->total_credits -= credit_charge;
Namjae Jeonb589f5d2021-12-31 09:26:25 +0900326 conn->outstanding_credits -= credit_charge;
Hyunchul Leebf8acc92021-10-07 16:26:58 +0900327 credits_requested = max_t(unsigned short,
328 le16_to_cpu(req_hdr->CreditRequest), 1);
329
330 /* according to smb2.credits smbtorture, Windows server
331 * 2016 or later grant up to 8192 credits at once.
332 *
333 * TODO: Need to adjuct CreditRequest value according to
334 * current cpu load
335 */
Hyunchul Leebf8acc92021-10-07 16:26:58 +0900336 if (hdr->Command == SMB2_NEGOTIATE)
Namjae Jeon914d7e52021-12-29 23:10:03 +0900337 aux_max = 1;
Hyunchul Leebf8acc92021-10-07 16:26:58 +0900338 else
Namjae Jeon004443b2021-12-29 23:08:46 +0900339 aux_max = conn->vals->max_credits - credit_charge;
Namjae Jeon914d7e52021-12-29 23:10:03 +0900340 credits_granted = min_t(unsigned short, credits_requested, aux_max);
Hyunchul Leebf8acc92021-10-07 16:26:58 +0900341
Namjae Jeon004443b2021-12-29 23:08:46 +0900342 if (conn->vals->max_credits - conn->total_credits < credits_granted)
343 credits_granted = conn->vals->max_credits -
Hyunchul Leebf8acc92021-10-07 16:26:58 +0900344 conn->total_credits;
345
Namjae Jeone2f34482021-03-16 10:49:09 +0900346 conn->total_credits += credits_granted;
347 work->credits_granted += credits_granted;
348
349 if (!req_hdr->NextCommand) {
350 /* Update CreditRequest in last request */
351 hdr->CreditRequest = cpu_to_le16(work->credits_granted);
352 }
Namjae Jeone2f34482021-03-16 10:49:09 +0900353 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +0900354 "credits: requested[%d] granted[%d] total_granted[%d]\n",
355 credits_requested, credits_granted,
356 conn->total_credits);
Namjae Jeone2f34482021-03-16 10:49:09 +0900357 return 0;
358}
359
360/**
361 * init_chained_smb2_rsp() - initialize smb2 chained response
362 * @work: smb work containing smb response buffer
363 */
364static void init_chained_smb2_rsp(struct ksmbd_work *work)
365{
Namjae Jeon8a893312021-06-25 13:43:37 +0900366 struct smb2_hdr *req = ksmbd_req_buf_next(work);
367 struct smb2_hdr *rsp = ksmbd_resp_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +0900368 struct smb2_hdr *rsp_hdr;
369 struct smb2_hdr *rcv_hdr;
370 int next_hdr_offset = 0;
371 int len, new_len;
372
373 /* Len of this response = updated RFC len - offset of previous cmd
374 * in the compound rsp
375 */
376
377 /* Storing the current local FID which may be needed by subsequent
378 * command in the compound request
379 */
380 if (req->Command == SMB2_CREATE && rsp->Status == STATUS_SUCCESS) {
Paulo Alcantara2d004c62022-03-21 13:08:26 -0300381 work->compound_fid = ((struct smb2_create_rsp *)rsp)->VolatileFileId;
382 work->compound_pfid = ((struct smb2_create_rsp *)rsp)->PersistentFileId;
Namjae Jeone2f34482021-03-16 10:49:09 +0900383 work->compound_sid = le64_to_cpu(rsp->SessionId);
384 }
385
Namjae Jeone5066492021-03-30 12:35:23 +0900386 len = get_rfc1002_len(work->response_buf) - work->next_smb2_rsp_hdr_off;
Namjae Jeone2f34482021-03-16 10:49:09 +0900387 next_hdr_offset = le32_to_cpu(req->NextCommand);
388
389 new_len = ALIGN(len, 8);
Namjae Jeoncb451722021-11-03 08:08:44 +0900390 inc_rfc1001_len(work->response_buf,
391 sizeof(struct smb2_hdr) + new_len - len);
Namjae Jeone2f34482021-03-16 10:49:09 +0900392 rsp->NextCommand = cpu_to_le32(new_len);
393
394 work->next_smb2_rcv_hdr_off += next_hdr_offset;
395 work->next_smb2_rsp_hdr_off += new_len;
396 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +0900397 "Compound req new_len = %d rcv off = %d rsp off = %d\n",
398 new_len, work->next_smb2_rcv_hdr_off,
399 work->next_smb2_rsp_hdr_off);
Namjae Jeone2f34482021-03-16 10:49:09 +0900400
Namjae Jeon8a893312021-06-25 13:43:37 +0900401 rsp_hdr = ksmbd_resp_buf_next(work);
402 rcv_hdr = ksmbd_req_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +0900403
404 if (!(rcv_hdr->Flags & SMB2_FLAGS_RELATED_OPERATIONS)) {
405 ksmbd_debug(SMB, "related flag should be set\n");
406 work->compound_fid = KSMBD_NO_FID;
407 work->compound_pfid = KSMBD_NO_FID;
408 }
Namjae Jeoncb451722021-11-03 08:08:44 +0900409 memset((char *)rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
Namjae Jeon18a015b2021-09-22 21:00:57 +0900410 rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER;
Namjae Jeone2f34482021-03-16 10:49:09 +0900411 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
412 rsp_hdr->Command = rcv_hdr->Command;
413
414 /*
415 * Message is response. We don't grant oplock yet.
416 */
417 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR |
418 SMB2_FLAGS_RELATED_OPERATIONS);
419 rsp_hdr->NextCommand = 0;
420 rsp_hdr->MessageId = rcv_hdr->MessageId;
421 rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId;
422 rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId;
423 rsp_hdr->SessionId = rcv_hdr->SessionId;
424 memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16);
425}
426
427/**
428 * is_chained_smb2_message() - check for chained command
429 * @work: smb work containing smb request buffer
430 *
431 * Return: true if chained request, otherwise false
432 */
433bool is_chained_smb2_message(struct ksmbd_work *work)
434{
Namjae Jeoncb451722021-11-03 08:08:44 +0900435 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
Namjae Jeond72a9c12021-09-24 09:24:08 +0900436 unsigned int len, next_cmd;
Namjae Jeone2f34482021-03-16 10:49:09 +0900437
438 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
439 return false;
440
Namjae Jeon8a893312021-06-25 13:43:37 +0900441 hdr = ksmbd_req_buf_next(work);
Namjae Jeond72a9c12021-09-24 09:24:08 +0900442 next_cmd = le32_to_cpu(hdr->NextCommand);
443 if (next_cmd > 0) {
444 if ((u64)work->next_smb2_rcv_hdr_off + next_cmd +
445 __SMB2_HEADER_STRUCTURE_SIZE >
446 get_rfc1002_len(work->request_buf)) {
447 pr_err("next command(%u) offset exceeds smb msg size\n",
448 next_cmd);
449 return false;
450 }
451
Namjae Jeondbad6302021-10-11 19:15:25 +0900452 if ((u64)get_rfc1002_len(work->response_buf) + MAX_CIFS_SMALL_BUFFER_SIZE >
453 work->response_sz) {
454 pr_err("next response offset exceeds response buffer size\n");
455 return false;
456 }
457
Namjae Jeone2f34482021-03-16 10:49:09 +0900458 ksmbd_debug(SMB, "got SMB2 chained command\n");
459 init_chained_smb2_rsp(work);
460 return true;
461 } else if (work->next_smb2_rcv_hdr_off) {
462 /*
463 * This is last request in chained command,
464 * align response to 8 byte
465 */
Namjae Jeone5066492021-03-30 12:35:23 +0900466 len = ALIGN(get_rfc1002_len(work->response_buf), 8);
467 len = len - get_rfc1002_len(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900468 if (len) {
469 ksmbd_debug(SMB, "padding len %u\n", len);
Namjae Jeone5066492021-03-30 12:35:23 +0900470 inc_rfc1001_len(work->response_buf, len);
471 if (work->aux_payload_sz)
Namjae Jeone2f34482021-03-16 10:49:09 +0900472 work->aux_payload_sz += len;
473 }
474 }
475 return false;
476}
477
478/**
479 * init_smb2_rsp_hdr() - initialize smb2 response
480 * @work: smb work containing smb request buffer
481 *
482 * Return: 0
483 */
484int init_smb2_rsp_hdr(struct ksmbd_work *work)
485{
Namjae Jeoncb451722021-11-03 08:08:44 +0900486 struct smb2_hdr *rsp_hdr = smb2_get_msg(work->response_buf);
487 struct smb2_hdr *rcv_hdr = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900488 struct ksmbd_conn *conn = work->conn;
489
490 memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
Namjae Jeoncb451722021-11-03 08:08:44 +0900491 *(__be32 *)work->response_buf =
492 cpu_to_be32(conn->vals->header_size);
Namjae Jeone2f34482021-03-16 10:49:09 +0900493 rsp_hdr->ProtocolId = rcv_hdr->ProtocolId;
494 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
495 rsp_hdr->Command = rcv_hdr->Command;
496
497 /*
498 * Message is response. We don't grant oplock yet.
499 */
500 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR);
501 rsp_hdr->NextCommand = 0;
502 rsp_hdr->MessageId = rcv_hdr->MessageId;
503 rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId;
504 rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId;
505 rsp_hdr->SessionId = rcv_hdr->SessionId;
506 memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16);
507
508 work->syncronous = true;
509 if (work->async_id) {
Namjae Jeond40012a2021-04-13 13:06:30 +0900510 ksmbd_release_id(&conn->async_ida, work->async_id);
Namjae Jeone2f34482021-03-16 10:49:09 +0900511 work->async_id = 0;
512 }
513
514 return 0;
515}
516
517/**
518 * smb2_allocate_rsp_buf() - allocate smb2 response buffer
519 * @work: smb work containing smb request buffer
520 *
521 * Return: 0 on success, otherwise -ENOMEM
522 */
523int smb2_allocate_rsp_buf(struct ksmbd_work *work)
524{
Namjae Jeoncb451722021-11-03 08:08:44 +0900525 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900526 size_t small_sz = MAX_CIFS_SMALL_BUFFER_SIZE;
Namjae Jeon4bc59472021-10-15 17:14:02 +0900527 size_t large_sz = small_sz + work->conn->vals->max_trans_size;
Namjae Jeone2f34482021-03-16 10:49:09 +0900528 size_t sz = small_sz;
529 int cmd = le16_to_cpu(hdr->Command);
530
Namjae Jeonc30f4eb2021-06-18 10:17:37 +0900531 if (cmd == SMB2_IOCTL_HE || cmd == SMB2_QUERY_DIRECTORY_HE)
Namjae Jeone2f34482021-03-16 10:49:09 +0900532 sz = large_sz;
Namjae Jeone2f34482021-03-16 10:49:09 +0900533
534 if (cmd == SMB2_QUERY_INFO_HE) {
535 struct smb2_query_info_req *req;
536
Namjae Jeoncb451722021-11-03 08:08:44 +0900537 req = smb2_get_msg(work->request_buf);
Namjae Jeon8f054112022-08-02 07:28:51 +0900538 if ((req->InfoType == SMB2_O_INFO_FILE &&
539 (req->FileInfoClass == FILE_FULL_EA_INFORMATION ||
540 req->FileInfoClass == FILE_ALL_INFORMATION)) ||
541 req->InfoType == SMB2_O_INFO_SECURITY)
Namjae Jeone2f34482021-03-16 10:49:09 +0900542 sz = large_sz;
Namjae Jeone2f34482021-03-16 10:49:09 +0900543 }
544
545 /* allocate large response buf for chained commands */
546 if (le32_to_cpu(hdr->NextCommand) > 0)
547 sz = large_sz;
548
Namjae Jeonc30f4eb2021-06-18 10:17:37 +0900549 work->response_buf = kvmalloc(sz, GFP_KERNEL | __GFP_ZERO);
Namjae Jeon63c454f2021-04-20 14:24:28 +0900550 if (!work->response_buf)
Namjae Jeone2f34482021-03-16 10:49:09 +0900551 return -ENOMEM;
Namjae Jeone2f34482021-03-16 10:49:09 +0900552
553 work->response_sz = sz;
554 return 0;
555}
556
557/**
558 * smb2_check_user_session() - check for valid session for a user
559 * @work: smb work containing smb request buffer
560 *
561 * Return: 0 on success, otherwise error
562 */
563int smb2_check_user_session(struct ksmbd_work *work)
564{
Namjae Jeoncb451722021-11-03 08:08:44 +0900565 struct smb2_hdr *req_hdr = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900566 struct ksmbd_conn *conn = work->conn;
567 unsigned int cmd = conn->ops->get_cmd_val(work);
568 unsigned long long sess_id;
569
570 work->sess = NULL;
571 /*
572 * SMB2_ECHO, SMB2_NEGOTIATE, SMB2_SESSION_SETUP command do not
573 * require a session id, so no need to validate user session's for
574 * these commands.
575 */
576 if (cmd == SMB2_ECHO_HE || cmd == SMB2_NEGOTIATE_HE ||
Namjae Jeon64b39f42021-03-30 14:25:35 +0900577 cmd == SMB2_SESSION_SETUP_HE)
Namjae Jeone2f34482021-03-16 10:49:09 +0900578 return 0;
579
580 if (!ksmbd_conn_good(work))
581 return -EINVAL;
582
583 sess_id = le64_to_cpu(req_hdr->SessionId);
584 /* Check for validity of user session */
Namjae Jeonf5a544e2021-06-18 10:04:19 +0900585 work->sess = ksmbd_session_lookup_all(conn, sess_id);
Namjae Jeone2f34482021-03-16 10:49:09 +0900586 if (work->sess)
587 return 1;
588 ksmbd_debug(SMB, "Invalid user session, Uid %llu\n", sess_id);
589 return -EINVAL;
590}
591
Namjae Jeone4d3e6b2022-07-22 10:15:10 +0900592static void destroy_previous_session(struct ksmbd_conn *conn,
593 struct ksmbd_user *user, u64 id)
Namjae Jeone2f34482021-03-16 10:49:09 +0900594{
595 struct ksmbd_session *prev_sess = ksmbd_session_lookup_slowpath(id);
596 struct ksmbd_user *prev_user;
Namjae Jeon17ea92a2022-07-22 10:17:06 +0900597 struct channel *chann;
Namjae Jeone2f34482021-03-16 10:49:09 +0900598
599 if (!prev_sess)
600 return;
601
602 prev_user = prev_sess->user;
603
Marios Makassikis1fca8032021-05-06 11:41:54 +0900604 if (!prev_user ||
605 strcmp(user->name, prev_user->name) ||
Namjae Jeone2f34482021-03-16 10:49:09 +0900606 user->passkey_sz != prev_user->passkey_sz ||
Namjae Jeonaf7c39d2022-07-25 13:36:52 +0900607 memcmp(user->passkey, prev_user->passkey, user->passkey_sz))
Namjae Jeone2f34482021-03-16 10:49:09 +0900608 return;
Namjae Jeone2f34482021-03-16 10:49:09 +0900609
Namjae Jeon17ea92a2022-07-22 10:17:06 +0900610 prev_sess->state = SMB2_SESSION_EXPIRED;
611 write_lock(&prev_sess->chann_lock);
612 list_for_each_entry(chann, &prev_sess->ksmbd_chann_list, chann_list)
613 chann->conn->status = KSMBD_SESS_EXITING;
614 write_unlock(&prev_sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +0900615}
616
617/**
618 * smb2_get_name() - get filename string from on the wire smb format
619 * @src: source buffer
620 * @maxlen: maxlen of source string
Yang Lid4eeb822021-12-21 20:48:57 +0900621 * @local_nls: nls_table pointer
Namjae Jeone2f34482021-03-16 10:49:09 +0900622 *
623 * Return: matching converted filename on success, otherwise error ptr
624 */
625static char *
Marios Makassikis80917f12021-12-01 21:41:19 +0100626smb2_get_name(const char *src, const int maxlen, struct nls_table *local_nls)
Namjae Jeone2f34482021-03-16 10:49:09 +0900627{
Hyunchul Lee265fd192021-09-25 00:06:16 +0900628 char *name;
Namjae Jeone2f34482021-03-16 10:49:09 +0900629
Namjae Jeon64b39f42021-03-30 14:25:35 +0900630 name = smb_strndup_from_utf16(src, maxlen, 1, local_nls);
Namjae Jeone2f34482021-03-16 10:49:09 +0900631 if (IS_ERR(name)) {
Namjae Jeonbde16942021-06-28 15:23:19 +0900632 pr_err("failed to get name %ld\n", PTR_ERR(name));
Namjae Jeone2f34482021-03-16 10:49:09 +0900633 return name;
634 }
635
Hyunchul Lee265fd192021-09-25 00:06:16 +0900636 ksmbd_conv_path_to_unix(name);
637 ksmbd_strip_last_slash(name);
638 return name;
Namjae Jeone2f34482021-03-16 10:49:09 +0900639}
640
Namjae Jeone2f34482021-03-16 10:49:09 +0900641int setup_async_work(struct ksmbd_work *work, void (*fn)(void **), void **arg)
642{
643 struct smb2_hdr *rsp_hdr;
644 struct ksmbd_conn *conn = work->conn;
645 int id;
646
Namjae Jeoncb451722021-11-03 08:08:44 +0900647 rsp_hdr = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900648 rsp_hdr->Flags |= SMB2_FLAGS_ASYNC_COMMAND;
649
Namjae Jeond40012a2021-04-13 13:06:30 +0900650 id = ksmbd_acquire_async_msg_id(&conn->async_ida);
Namjae Jeone2f34482021-03-16 10:49:09 +0900651 if (id < 0) {
Namjae Jeonbde16942021-06-28 15:23:19 +0900652 pr_err("Failed to alloc async message id\n");
Namjae Jeone2f34482021-03-16 10:49:09 +0900653 return id;
654 }
655 work->syncronous = false;
656 work->async_id = id;
657 rsp_hdr->Id.AsyncId = cpu_to_le64(id);
658
659 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +0900660 "Send interim Response to inform async request id : %d\n",
661 work->async_id);
Namjae Jeone2f34482021-03-16 10:49:09 +0900662
663 work->cancel_fn = fn;
664 work->cancel_argv = arg;
665
Namjae Jeon6c4e6752021-06-07 09:08:45 +0900666 if (list_empty(&work->async_request_entry)) {
667 spin_lock(&conn->request_lock);
668 list_add_tail(&work->async_request_entry, &conn->async_requests);
669 spin_unlock(&conn->request_lock);
670 }
Namjae Jeone2f34482021-03-16 10:49:09 +0900671
672 return 0;
673}
674
675void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status)
676{
677 struct smb2_hdr *rsp_hdr;
678
Namjae Jeoncb451722021-11-03 08:08:44 +0900679 rsp_hdr = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +0900680 smb2_set_err_rsp(work);
681 rsp_hdr->Status = status;
682
683 work->multiRsp = 1;
684 ksmbd_conn_write(work);
685 rsp_hdr->Status = 0;
686 work->multiRsp = 0;
687}
688
689static __le32 smb2_get_reparse_tag_special_file(umode_t mode)
690{
691 if (S_ISDIR(mode) || S_ISREG(mode))
692 return 0;
693
694 if (S_ISLNK(mode))
695 return IO_REPARSE_TAG_LX_SYMLINK_LE;
696 else if (S_ISFIFO(mode))
697 return IO_REPARSE_TAG_LX_FIFO_LE;
698 else if (S_ISSOCK(mode))
699 return IO_REPARSE_TAG_AF_UNIX_LE;
700 else if (S_ISCHR(mode))
701 return IO_REPARSE_TAG_LX_CHR_LE;
702 else if (S_ISBLK(mode))
703 return IO_REPARSE_TAG_LX_BLK_LE;
704
705 return 0;
706}
707
708/**
709 * smb2_get_dos_mode() - get file mode in dos format from unix mode
710 * @stat: kstat containing file mode
Hyunchul Lee95fa1ce2021-03-21 17:05:56 +0900711 * @attribute: attribute flags
Namjae Jeone2f34482021-03-16 10:49:09 +0900712 *
713 * Return: converted dos mode
714 */
715static int smb2_get_dos_mode(struct kstat *stat, int attribute)
716{
717 int attr = 0;
718
Namjae Jeon64b39f42021-03-30 14:25:35 +0900719 if (S_ISDIR(stat->mode)) {
Ronnie Sahlberg26a27872021-11-03 08:45:52 +0900720 attr = FILE_ATTRIBUTE_DIRECTORY |
721 (attribute & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM));
Namjae Jeon64b39f42021-03-30 14:25:35 +0900722 } else {
Ronnie Sahlberg26a27872021-11-03 08:45:52 +0900723 attr = (attribute & 0x00005137) | FILE_ATTRIBUTE_ARCHIVE;
724 attr &= ~(FILE_ATTRIBUTE_DIRECTORY);
Namjae Jeone2f34482021-03-16 10:49:09 +0900725 if (S_ISREG(stat->mode) && (server_conf.share_fake_fscaps &
726 FILE_SUPPORTS_SPARSE_FILES))
Ronnie Sahlberg26a27872021-11-03 08:45:52 +0900727 attr |= FILE_ATTRIBUTE_SPARSE_FILE;
Namjae Jeone2f34482021-03-16 10:49:09 +0900728
729 if (smb2_get_reparse_tag_special_file(stat->mode))
Ronnie Sahlberg26a27872021-11-03 08:45:52 +0900730 attr |= FILE_ATTRIBUTE_REPARSE_POINT;
Namjae Jeone2f34482021-03-16 10:49:09 +0900731 }
732
733 return attr;
734}
735
736static void build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt,
Namjae Jeon070fb212021-05-26 17:57:12 +0900737 __le16 hash_id)
Namjae Jeone2f34482021-03-16 10:49:09 +0900738{
739 pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES;
740 pneg_ctxt->DataLength = cpu_to_le16(38);
741 pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1);
742 pneg_ctxt->Reserved = cpu_to_le32(0);
743 pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE);
744 get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE);
745 pneg_ctxt->HashAlgorithms = hash_id;
746}
747
748static void build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt,
Namjae Jeon070fb212021-05-26 17:57:12 +0900749 __le16 cipher_type)
Namjae Jeone2f34482021-03-16 10:49:09 +0900750{
751 pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES;
752 pneg_ctxt->DataLength = cpu_to_le16(4);
753 pneg_ctxt->Reserved = cpu_to_le32(0);
754 pneg_ctxt->CipherCount = cpu_to_le16(1);
755 pneg_ctxt->Ciphers[0] = cipher_type;
756}
757
Ronnie Sahlbergd6c9ad23b2021-11-03 08:44:38 +0900758static void build_compression_ctxt(struct smb2_compression_capabilities_context *pneg_ctxt,
Namjae Jeon070fb212021-05-26 17:57:12 +0900759 __le16 comp_algo)
Namjae Jeone2f34482021-03-16 10:49:09 +0900760{
761 pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES;
762 pneg_ctxt->DataLength =
Ronnie Sahlbergd6c9ad23b2021-11-03 08:44:38 +0900763 cpu_to_le16(sizeof(struct smb2_compression_capabilities_context)
Namjae Jeone2f34482021-03-16 10:49:09 +0900764 - sizeof(struct smb2_neg_context));
765 pneg_ctxt->Reserved = cpu_to_le32(0);
766 pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(1);
Ronnie Sahlbergd6c9ad23b2021-11-03 08:44:38 +0900767 pneg_ctxt->Flags = cpu_to_le32(0);
Namjae Jeone2f34482021-03-16 10:49:09 +0900768 pneg_ctxt->CompressionAlgorithms[0] = comp_algo;
769}
770
Namjae Jeon378087c2021-07-21 10:05:53 +0900771static void build_sign_cap_ctxt(struct smb2_signing_capabilities *pneg_ctxt,
772 __le16 sign_algo)
773{
774 pneg_ctxt->ContextType = SMB2_SIGNING_CAPABILITIES;
775 pneg_ctxt->DataLength =
776 cpu_to_le16((sizeof(struct smb2_signing_capabilities) + 2)
777 - sizeof(struct smb2_neg_context));
778 pneg_ctxt->Reserved = cpu_to_le32(0);
779 pneg_ctxt->SigningAlgorithmCount = cpu_to_le16(1);
780 pneg_ctxt->SigningAlgorithms[0] = sign_algo;
781}
782
Namjae Jeon64b39f42021-03-30 14:25:35 +0900783static void build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt)
Namjae Jeone2f34482021-03-16 10:49:09 +0900784{
785 pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE;
786 pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN);
787 /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */
788 pneg_ctxt->Name[0] = 0x93;
789 pneg_ctxt->Name[1] = 0xAD;
790 pneg_ctxt->Name[2] = 0x25;
791 pneg_ctxt->Name[3] = 0x50;
792 pneg_ctxt->Name[4] = 0x9C;
793 pneg_ctxt->Name[5] = 0xB4;
794 pneg_ctxt->Name[6] = 0x11;
795 pneg_ctxt->Name[7] = 0xE7;
796 pneg_ctxt->Name[8] = 0xB4;
797 pneg_ctxt->Name[9] = 0x23;
798 pneg_ctxt->Name[10] = 0x83;
799 pneg_ctxt->Name[11] = 0xDE;
800 pneg_ctxt->Name[12] = 0x96;
801 pneg_ctxt->Name[13] = 0x8B;
802 pneg_ctxt->Name[14] = 0xCD;
803 pneg_ctxt->Name[15] = 0x7C;
804}
805
Namjae Jeon64b39f42021-03-30 14:25:35 +0900806static void assemble_neg_contexts(struct ksmbd_conn *conn,
Namjae Jeoncb451722021-11-03 08:08:44 +0900807 struct smb2_negotiate_rsp *rsp,
808 void *smb2_buf_len)
Namjae Jeone2f34482021-03-16 10:49:09 +0900809{
Namjae Jeone2f34482021-03-16 10:49:09 +0900810 char *pneg_ctxt = (char *)rsp +
Namjae Jeoncb451722021-11-03 08:08:44 +0900811 le32_to_cpu(rsp->NegotiateContextOffset);
Namjae Jeone2f34482021-03-16 10:49:09 +0900812 int neg_ctxt_cnt = 1;
813 int ctxt_size;
814
815 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +0900816 "assemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n");
Namjae Jeone2f34482021-03-16 10:49:09 +0900817 build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt,
Namjae Jeon070fb212021-05-26 17:57:12 +0900818 conn->preauth_info->Preauth_HashId);
Namjae Jeone2f34482021-03-16 10:49:09 +0900819 rsp->NegotiateContextCount = cpu_to_le16(neg_ctxt_cnt);
Namjae Jeoncb451722021-11-03 08:08:44 +0900820 inc_rfc1001_len(smb2_buf_len, AUTH_GSS_PADDING);
Namjae Jeone2f34482021-03-16 10:49:09 +0900821 ctxt_size = sizeof(struct smb2_preauth_neg_context);
822 /* Round to 8 byte boundary */
823 pneg_ctxt += round_up(sizeof(struct smb2_preauth_neg_context), 8);
824
825 if (conn->cipher_type) {
826 ctxt_size = round_up(ctxt_size, 8);
827 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +0900828 "assemble SMB2_ENCRYPTION_CAPABILITIES context\n");
Namjae Jeon64b39f42021-03-30 14:25:35 +0900829 build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt,
Namjae Jeon070fb212021-05-26 17:57:12 +0900830 conn->cipher_type);
Namjae Jeone2f34482021-03-16 10:49:09 +0900831 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
Namjae Jeonaf320a72021-07-21 10:03:19 +0900832 ctxt_size += sizeof(struct smb2_encryption_neg_context) + 2;
Namjae Jeone2f34482021-03-16 10:49:09 +0900833 /* Round to 8 byte boundary */
834 pneg_ctxt +=
Namjae Jeonaf320a72021-07-21 10:03:19 +0900835 round_up(sizeof(struct smb2_encryption_neg_context) + 2,
Namjae Jeone2f34482021-03-16 10:49:09 +0900836 8);
837 }
838
839 if (conn->compress_algorithm) {
840 ctxt_size = round_up(ctxt_size, 8);
841 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +0900842 "assemble SMB2_COMPRESSION_CAPABILITIES context\n");
Namjae Jeone2f34482021-03-16 10:49:09 +0900843 /* Temporarily set to SMB3_COMPRESS_NONE */
Ronnie Sahlbergd6c9ad23b2021-11-03 08:44:38 +0900844 build_compression_ctxt((struct smb2_compression_capabilities_context *)pneg_ctxt,
Namjae Jeon070fb212021-05-26 17:57:12 +0900845 conn->compress_algorithm);
Namjae Jeone2f34482021-03-16 10:49:09 +0900846 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
Ronnie Sahlbergd6c9ad23b2021-11-03 08:44:38 +0900847 ctxt_size += sizeof(struct smb2_compression_capabilities_context) + 2;
Namjae Jeone2f34482021-03-16 10:49:09 +0900848 /* Round to 8 byte boundary */
Ronnie Sahlbergd6c9ad23b2021-11-03 08:44:38 +0900849 pneg_ctxt += round_up(sizeof(struct smb2_compression_capabilities_context) + 2,
Namjae Jeonaf320a72021-07-21 10:03:19 +0900850 8);
Namjae Jeone2f34482021-03-16 10:49:09 +0900851 }
852
853 if (conn->posix_ext_supported) {
854 ctxt_size = round_up(ctxt_size, 8);
855 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +0900856 "assemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n");
Namjae Jeone2f34482021-03-16 10:49:09 +0900857 build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt);
858 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
859 ctxt_size += sizeof(struct smb2_posix_neg_context);
Namjae Jeon378087c2021-07-21 10:05:53 +0900860 /* Round to 8 byte boundary */
861 pneg_ctxt += round_up(sizeof(struct smb2_posix_neg_context), 8);
862 }
863
864 if (conn->signing_negotiated) {
865 ctxt_size = round_up(ctxt_size, 8);
866 ksmbd_debug(SMB,
867 "assemble SMB2_SIGNING_CAPABILITIES context\n");
868 build_sign_cap_ctxt((struct smb2_signing_capabilities *)pneg_ctxt,
869 conn->signing_algorithm);
870 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
871 ctxt_size += sizeof(struct smb2_signing_capabilities) + 2;
Namjae Jeone2f34482021-03-16 10:49:09 +0900872 }
873
Namjae Jeoncb451722021-11-03 08:08:44 +0900874 inc_rfc1001_len(smb2_buf_len, ctxt_size);
Namjae Jeone2f34482021-03-16 10:49:09 +0900875}
876
Namjae Jeon64b39f42021-03-30 14:25:35 +0900877static __le32 decode_preauth_ctxt(struct ksmbd_conn *conn,
Namjae Jeon070fb212021-05-26 17:57:12 +0900878 struct smb2_preauth_neg_context *pneg_ctxt)
Namjae Jeone2f34482021-03-16 10:49:09 +0900879{
880 __le32 err = STATUS_NO_PREAUTH_INTEGRITY_HASH_OVERLAP;
881
Namjae Jeon070fb212021-05-26 17:57:12 +0900882 if (pneg_ctxt->HashAlgorithms == SMB2_PREAUTH_INTEGRITY_SHA512) {
Namjae Jeone2f34482021-03-16 10:49:09 +0900883 conn->preauth_info->Preauth_HashId =
884 SMB2_PREAUTH_INTEGRITY_SHA512;
885 err = STATUS_SUCCESS;
886 }
887
888 return err;
889}
890
Namjae Jeonaf320a72021-07-21 10:03:19 +0900891static void decode_encrypt_ctxt(struct ksmbd_conn *conn,
892 struct smb2_encryption_neg_context *pneg_ctxt,
893 int len_of_ctxts)
Namjae Jeone2f34482021-03-16 10:49:09 +0900894{
Namjae Jeone2f34482021-03-16 10:49:09 +0900895 int cph_cnt = le16_to_cpu(pneg_ctxt->CipherCount);
Namjae Jeonaf320a72021-07-21 10:03:19 +0900896 int i, cphs_size = cph_cnt * sizeof(__le16);
Namjae Jeone2f34482021-03-16 10:49:09 +0900897
898 conn->cipher_type = 0;
899
Namjae Jeonaf320a72021-07-21 10:03:19 +0900900 if (sizeof(struct smb2_encryption_neg_context) + cphs_size >
901 len_of_ctxts) {
902 pr_err("Invalid cipher count(%d)\n", cph_cnt);
903 return;
904 }
905
Namjae Jeon37ba7b02022-10-29 00:01:38 +0900906 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION_OFF)
Namjae Jeonaf320a72021-07-21 10:03:19 +0900907 return;
Namjae Jeone2f34482021-03-16 10:49:09 +0900908
909 for (i = 0; i < cph_cnt; i++) {
910 if (pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_GCM ||
Namjae Jeon5a0ca772021-05-06 11:43:37 +0900911 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_CCM ||
912 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_CCM ||
913 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_GCM) {
Namjae Jeone2f34482021-03-16 10:49:09 +0900914 ksmbd_debug(SMB, "Cipher ID = 0x%x\n",
Namjae Jeon070fb212021-05-26 17:57:12 +0900915 pneg_ctxt->Ciphers[i]);
Namjae Jeone2f34482021-03-16 10:49:09 +0900916 conn->cipher_type = pneg_ctxt->Ciphers[i];
917 break;
918 }
919 }
Namjae Jeone2f34482021-03-16 10:49:09 +0900920}
921
Marcos Del Sol Vives83912d62021-12-16 11:37:22 +0100922/**
923 * smb3_encryption_negotiated() - checks if server and client agreed on enabling encryption
924 * @conn: smb connection
925 *
926 * Return: true if connection should be encrypted, else false
927 */
Namjae Jeon5bedae92022-09-22 23:37:41 +0900928bool smb3_encryption_negotiated(struct ksmbd_conn *conn)
Marcos Del Sol Vives83912d62021-12-16 11:37:22 +0100929{
930 if (!conn->ops->generate_encryptionkey)
931 return false;
932
933 /*
934 * SMB 3.0 and 3.0.2 dialects use the SMB2_GLOBAL_CAP_ENCRYPTION flag.
935 * SMB 3.1.1 uses the cipher_type field.
936 */
937 return (conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) ||
938 conn->cipher_type;
939}
940
Namjae Jeonaf320a72021-07-21 10:03:19 +0900941static void decode_compress_ctxt(struct ksmbd_conn *conn,
Ronnie Sahlbergd6c9ad23b2021-11-03 08:44:38 +0900942 struct smb2_compression_capabilities_context *pneg_ctxt)
Namjae Jeone2f34482021-03-16 10:49:09 +0900943{
Namjae Jeone2f34482021-03-16 10:49:09 +0900944 conn->compress_algorithm = SMB3_COMPRESS_NONE;
Namjae Jeone2f34482021-03-16 10:49:09 +0900945}
946
Namjae Jeon378087c2021-07-21 10:05:53 +0900947static void decode_sign_cap_ctxt(struct ksmbd_conn *conn,
948 struct smb2_signing_capabilities *pneg_ctxt,
949 int len_of_ctxts)
950{
951 int sign_algo_cnt = le16_to_cpu(pneg_ctxt->SigningAlgorithmCount);
952 int i, sign_alos_size = sign_algo_cnt * sizeof(__le16);
953
954 conn->signing_negotiated = false;
955
956 if (sizeof(struct smb2_signing_capabilities) + sign_alos_size >
957 len_of_ctxts) {
958 pr_err("Invalid signing algorithm count(%d)\n", sign_algo_cnt);
959 return;
960 }
961
962 for (i = 0; i < sign_algo_cnt; i++) {
Ronnie Sahlbergd6c9ad23b2021-11-03 08:44:38 +0900963 if (pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_HMAC_SHA256_LE ||
964 pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_AES_CMAC_LE) {
Namjae Jeon378087c2021-07-21 10:05:53 +0900965 ksmbd_debug(SMB, "Signing Algorithm ID = 0x%x\n",
966 pneg_ctxt->SigningAlgorithms[i]);
967 conn->signing_negotiated = true;
968 conn->signing_algorithm =
969 pneg_ctxt->SigningAlgorithms[i];
970 break;
971 }
972 }
973}
974
Namjae Jeone2f34482021-03-16 10:49:09 +0900975static __le32 deassemble_neg_contexts(struct ksmbd_conn *conn,
Namjae Jeoncb451722021-11-03 08:08:44 +0900976 struct smb2_negotiate_req *req,
977 int len_of_smb)
Namjae Jeone2f34482021-03-16 10:49:09 +0900978{
Namjae Jeone2f34482021-03-16 10:49:09 +0900979 /* +4 is to account for the RFC1001 len field */
Namjae Jeoncb451722021-11-03 08:08:44 +0900980 struct smb2_neg_context *pctx = (struct smb2_neg_context *)req;
Namjae Jeonaf320a72021-07-21 10:03:19 +0900981 int i = 0, len_of_ctxts;
982 int offset = le32_to_cpu(req->NegotiateContextOffset);
Namjae Jeone2f34482021-03-16 10:49:09 +0900983 int neg_ctxt_cnt = le16_to_cpu(req->NegotiateContextCount);
Namjae Jeonaf320a72021-07-21 10:03:19 +0900984 __le32 status = STATUS_INVALID_PARAMETER;
Namjae Jeone2f34482021-03-16 10:49:09 +0900985
Namjae Jeonaf320a72021-07-21 10:03:19 +0900986 ksmbd_debug(SMB, "decoding %d negotiate contexts\n", neg_ctxt_cnt);
987 if (len_of_smb <= offset) {
988 ksmbd_debug(SMB, "Invalid response: negotiate context offset\n");
989 return status;
990 }
991
992 len_of_ctxts = len_of_smb - offset;
993
Namjae Jeone2f34482021-03-16 10:49:09 +0900994 while (i++ < neg_ctxt_cnt) {
Namjae Jeonaf320a72021-07-21 10:03:19 +0900995 int clen;
996
997 /* check that offset is not beyond end of SMB */
998 if (len_of_ctxts == 0)
999 break;
1000
1001 if (len_of_ctxts < sizeof(struct smb2_neg_context))
1002 break;
1003
1004 pctx = (struct smb2_neg_context *)((char *)pctx + offset);
1005 clen = le16_to_cpu(pctx->DataLength);
1006 if (clen + sizeof(struct smb2_neg_context) > len_of_ctxts)
1007 break;
1008
1009 if (pctx->ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001010 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09001011 "deassemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09001012 if (conn->preauth_info->Preauth_HashId)
1013 break;
1014
1015 status = decode_preauth_ctxt(conn,
Namjae Jeonaf320a72021-07-21 10:03:19 +09001016 (struct smb2_preauth_neg_context *)pctx);
1017 if (status != STATUS_SUCCESS)
1018 break;
1019 } else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001020 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09001021 "deassemble SMB2_ENCRYPTION_CAPABILITIES context\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09001022 if (conn->cipher_type)
1023 break;
1024
Namjae Jeonaf320a72021-07-21 10:03:19 +09001025 decode_encrypt_ctxt(conn,
1026 (struct smb2_encryption_neg_context *)pctx,
1027 len_of_ctxts);
1028 } else if (pctx->ContextType == SMB2_COMPRESSION_CAPABILITIES) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001029 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09001030 "deassemble SMB2_COMPRESSION_CAPABILITIES context\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09001031 if (conn->compress_algorithm)
1032 break;
1033
Namjae Jeonaf320a72021-07-21 10:03:19 +09001034 decode_compress_ctxt(conn,
Ronnie Sahlbergd6c9ad23b2021-11-03 08:44:38 +09001035 (struct smb2_compression_capabilities_context *)pctx);
Namjae Jeonaf320a72021-07-21 10:03:19 +09001036 } else if (pctx->ContextType == SMB2_NETNAME_NEGOTIATE_CONTEXT_ID) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001037 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09001038 "deassemble SMB2_NETNAME_NEGOTIATE_CONTEXT_ID context\n");
Namjae Jeonaf320a72021-07-21 10:03:19 +09001039 } else if (pctx->ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001040 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09001041 "deassemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09001042 conn->posix_ext_supported = true;
Namjae Jeon378087c2021-07-21 10:05:53 +09001043 } else if (pctx->ContextType == SMB2_SIGNING_CAPABILITIES) {
1044 ksmbd_debug(SMB,
1045 "deassemble SMB2_SIGNING_CAPABILITIES context\n");
1046 decode_sign_cap_ctxt(conn,
1047 (struct smb2_signing_capabilities *)pctx,
1048 len_of_ctxts);
Namjae Jeone2f34482021-03-16 10:49:09 +09001049 }
Namjae Jeone2f34482021-03-16 10:49:09 +09001050
Namjae Jeonaf320a72021-07-21 10:03:19 +09001051 /* offsets must be 8 byte aligned */
1052 clen = (clen + 7) & ~0x7;
1053 offset = clen + sizeof(struct smb2_neg_context);
1054 len_of_ctxts -= clen + sizeof(struct smb2_neg_context);
Namjae Jeone2f34482021-03-16 10:49:09 +09001055 }
1056 return status;
1057}
1058
1059/**
1060 * smb2_handle_negotiate() - handler for smb2 negotiate command
1061 * @work: smb work containing smb request buffer
1062 *
1063 * Return: 0
1064 */
1065int smb2_handle_negotiate(struct ksmbd_work *work)
1066{
1067 struct ksmbd_conn *conn = work->conn;
Namjae Jeoncb451722021-11-03 08:08:44 +09001068 struct smb2_negotiate_req *req = smb2_get_msg(work->request_buf);
1069 struct smb2_negotiate_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09001070 int rc = 0;
Namjae Jeon442ff9e2021-09-29 15:44:32 +09001071 unsigned int smb2_buf_len, smb2_neg_size;
Namjae Jeone2f34482021-03-16 10:49:09 +09001072 __le32 status;
1073
1074 ksmbd_debug(SMB, "Received negotiate request\n");
1075 conn->need_neg = false;
1076 if (ksmbd_conn_good(work)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09001077 pr_err("conn->tcp_status is already in CifsGood State\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09001078 work->send_no_response = 1;
1079 return rc;
1080 }
1081
1082 if (req->DialectCount == 0) {
Namjae Jeonbde16942021-06-28 15:23:19 +09001083 pr_err("malformed packet\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09001084 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1085 rc = -EINVAL;
1086 goto err_out;
1087 }
1088
Namjae Jeon442ff9e2021-09-29 15:44:32 +09001089 smb2_buf_len = get_rfc1002_len(work->request_buf);
Namjae Jeoncb451722021-11-03 08:08:44 +09001090 smb2_neg_size = offsetof(struct smb2_negotiate_req, Dialects);
Namjae Jeon442ff9e2021-09-29 15:44:32 +09001091 if (smb2_neg_size > smb2_buf_len) {
1092 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1093 rc = -EINVAL;
1094 goto err_out;
1095 }
1096
1097 if (conn->dialect == SMB311_PROT_ID) {
1098 unsigned int nego_ctxt_off = le32_to_cpu(req->NegotiateContextOffset);
1099
1100 if (smb2_buf_len < nego_ctxt_off) {
1101 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1102 rc = -EINVAL;
1103 goto err_out;
1104 }
1105
1106 if (smb2_neg_size > nego_ctxt_off) {
1107 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1108 rc = -EINVAL;
1109 goto err_out;
1110 }
1111
1112 if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) >
1113 nego_ctxt_off) {
1114 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1115 rc = -EINVAL;
1116 goto err_out;
1117 }
1118 } else {
1119 if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) >
1120 smb2_buf_len) {
1121 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1122 rc = -EINVAL;
1123 goto err_out;
1124 }
1125 }
1126
Namjae Jeone2f34482021-03-16 10:49:09 +09001127 conn->cli_cap = le32_to_cpu(req->Capabilities);
1128 switch (conn->dialect) {
1129 case SMB311_PROT_ID:
1130 conn->preauth_info =
1131 kzalloc(sizeof(struct preauth_integrity_info),
Namjae Jeon070fb212021-05-26 17:57:12 +09001132 GFP_KERNEL);
Namjae Jeone2f34482021-03-16 10:49:09 +09001133 if (!conn->preauth_info) {
1134 rc = -ENOMEM;
1135 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1136 goto err_out;
1137 }
1138
Namjae Jeoncb451722021-11-03 08:08:44 +09001139 status = deassemble_neg_contexts(conn, req,
1140 get_rfc1002_len(work->request_buf));
Namjae Jeone2f34482021-03-16 10:49:09 +09001141 if (status != STATUS_SUCCESS) {
Namjae Jeonbde16942021-06-28 15:23:19 +09001142 pr_err("deassemble_neg_contexts error(0x%x)\n",
1143 status);
Namjae Jeone2f34482021-03-16 10:49:09 +09001144 rsp->hdr.Status = status;
1145 rc = -EINVAL;
Namjae Jeonaa7253c2022-07-28 21:56:19 +09001146 kfree(conn->preauth_info);
1147 conn->preauth_info = NULL;
Namjae Jeone2f34482021-03-16 10:49:09 +09001148 goto err_out;
1149 }
1150
1151 rc = init_smb3_11_server(conn);
1152 if (rc < 0) {
1153 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
Namjae Jeonaa7253c2022-07-28 21:56:19 +09001154 kfree(conn->preauth_info);
1155 conn->preauth_info = NULL;
Namjae Jeone2f34482021-03-16 10:49:09 +09001156 goto err_out;
1157 }
1158
1159 ksmbd_gen_preauth_integrity_hash(conn,
Namjae Jeon070fb212021-05-26 17:57:12 +09001160 work->request_buf,
1161 conn->preauth_info->Preauth_HashValue);
Namjae Jeone2f34482021-03-16 10:49:09 +09001162 rsp->NegotiateContextOffset =
1163 cpu_to_le32(OFFSET_OF_NEG_CONTEXT);
Namjae Jeoncb451722021-11-03 08:08:44 +09001164 assemble_neg_contexts(conn, rsp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09001165 break;
1166 case SMB302_PROT_ID:
1167 init_smb3_02_server(conn);
1168 break;
1169 case SMB30_PROT_ID:
1170 init_smb3_0_server(conn);
1171 break;
1172 case SMB21_PROT_ID:
1173 init_smb2_1_server(conn);
1174 break;
Namjae Jeone2f34482021-03-16 10:49:09 +09001175 case SMB2X_PROT_ID:
1176 case BAD_PROT_ID:
1177 default:
1178 ksmbd_debug(SMB, "Server dialect :0x%x not supported\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09001179 conn->dialect);
Namjae Jeone2f34482021-03-16 10:49:09 +09001180 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
1181 rc = -EINVAL;
1182 goto err_out;
1183 }
1184 rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
1185
1186 /* For stats */
1187 conn->connection_type = conn->dialect;
1188
1189 rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size);
1190 rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size);
1191 rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size);
1192
Namjae Jeon51a13872021-09-29 13:09:24 +09001193 memcpy(conn->ClientGUID, req->ClientGUID,
1194 SMB2_CLIENT_GUID_SIZE);
1195 conn->cli_sec_mode = le16_to_cpu(req->SecurityMode);
Namjae Jeone2f34482021-03-16 10:49:09 +09001196
1197 rsp->StructureSize = cpu_to_le16(65);
1198 rsp->DialectRevision = cpu_to_le16(conn->dialect);
1199 /* Not setting conn guid rsp->ServerGUID, as it
1200 * not used by client for identifying server
1201 */
1202 memset(rsp->ServerGUID, 0, SMB2_CLIENT_GUID_SIZE);
1203
1204 rsp->SystemTime = cpu_to_le64(ksmbd_systime());
1205 rsp->ServerStartTime = 0;
1206 ksmbd_debug(SMB, "negotiate context offset %d, count %d\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09001207 le32_to_cpu(rsp->NegotiateContextOffset),
1208 le16_to_cpu(rsp->NegotiateContextCount));
Namjae Jeone2f34482021-03-16 10:49:09 +09001209
1210 rsp->SecurityBufferOffset = cpu_to_le16(128);
1211 rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH);
Namjae Jeoncb451722021-11-03 08:08:44 +09001212 ksmbd_copy_gss_neg_header((char *)(&rsp->hdr) +
1213 le16_to_cpu(rsp->SecurityBufferOffset));
1214 inc_rfc1001_len(work->response_buf, sizeof(struct smb2_negotiate_rsp) -
Namjae Jeon070fb212021-05-26 17:57:12 +09001215 sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) +
1216 AUTH_GSS_LENGTH);
Namjae Jeone2f34482021-03-16 10:49:09 +09001217 rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE;
1218 conn->use_spnego = true;
1219
1220 if ((server_conf.signing == KSMBD_CONFIG_OPT_AUTO ||
Namjae Jeon64b39f42021-03-30 14:25:35 +09001221 server_conf.signing == KSMBD_CONFIG_OPT_DISABLED) &&
1222 req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED_LE)
Namjae Jeone2f34482021-03-16 10:49:09 +09001223 conn->sign = true;
1224 else if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) {
1225 server_conf.enforced_signing = true;
1226 rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE;
1227 conn->sign = true;
1228 }
1229
1230 conn->srv_sec_mode = le16_to_cpu(rsp->SecurityMode);
1231 ksmbd_conn_set_need_negotiate(work);
1232
1233err_out:
1234 if (rc < 0)
1235 smb2_set_err_rsp(work);
1236
1237 return rc;
1238}
1239
1240static int alloc_preauth_hash(struct ksmbd_session *sess,
Namjae Jeon070fb212021-05-26 17:57:12 +09001241 struct ksmbd_conn *conn)
Namjae Jeone2f34482021-03-16 10:49:09 +09001242{
1243 if (sess->Preauth_HashValue)
1244 return 0;
1245
kernel test robot86f52972021-04-02 12:17:24 +09001246 sess->Preauth_HashValue = kmemdup(conn->preauth_info->Preauth_HashValue,
Namjae Jeon070fb212021-05-26 17:57:12 +09001247 PREAUTH_HASHVALUE_SIZE, GFP_KERNEL);
Namjae Jeone2f34482021-03-16 10:49:09 +09001248 if (!sess->Preauth_HashValue)
1249 return -ENOMEM;
1250
Namjae Jeone2f34482021-03-16 10:49:09 +09001251 return 0;
1252}
1253
1254static int generate_preauth_hash(struct ksmbd_work *work)
1255{
1256 struct ksmbd_conn *conn = work->conn;
1257 struct ksmbd_session *sess = work->sess;
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001258 u8 *preauth_hash;
Namjae Jeone2f34482021-03-16 10:49:09 +09001259
1260 if (conn->dialect != SMB311_PROT_ID)
1261 return 0;
1262
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001263 if (conn->binding) {
1264 struct preauth_session *preauth_sess;
1265
1266 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
1267 if (!preauth_sess) {
1268 preauth_sess = ksmbd_preauth_session_alloc(conn, sess->id);
1269 if (!preauth_sess)
1270 return -ENOMEM;
1271 }
1272
1273 preauth_hash = preauth_sess->Preauth_HashValue;
1274 } else {
1275 if (!sess->Preauth_HashValue)
1276 if (alloc_preauth_hash(sess, conn))
1277 return -ENOMEM;
1278 preauth_hash = sess->Preauth_HashValue;
Namjae Jeone2f34482021-03-16 10:49:09 +09001279 }
1280
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001281 ksmbd_gen_preauth_integrity_hash(conn, work->request_buf, preauth_hash);
Namjae Jeone2f34482021-03-16 10:49:09 +09001282 return 0;
1283}
1284
Marios Makassikis0d994cd2021-10-19 17:39:38 +02001285static int decode_negotiation_token(struct ksmbd_conn *conn,
1286 struct negotiate_message *negblob,
1287 size_t sz)
Namjae Jeone2f34482021-03-16 10:49:09 +09001288{
Namjae Jeone2f34482021-03-16 10:49:09 +09001289 if (!conn->use_spnego)
1290 return -EINVAL;
1291
Hyunchul Leefad41612021-04-19 17:26:15 +09001292 if (ksmbd_decode_negTokenInit((char *)negblob, sz, conn)) {
1293 if (ksmbd_decode_negTokenTarg((char *)negblob, sz, conn)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001294 conn->auth_mechs |= KSMBD_AUTH_NTLMSSP;
1295 conn->preferred_auth_mech = KSMBD_AUTH_NTLMSSP;
1296 conn->use_spnego = false;
1297 }
1298 }
1299 return 0;
1300}
1301
1302static int ntlm_negotiate(struct ksmbd_work *work,
Marios Makassikis0d994cd2021-10-19 17:39:38 +02001303 struct negotiate_message *negblob,
1304 size_t negblob_len)
Namjae Jeone2f34482021-03-16 10:49:09 +09001305{
Namjae Jeoncb451722021-11-03 08:08:44 +09001306 struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09001307 struct challenge_message *chgblob;
1308 unsigned char *spnego_blob = NULL;
1309 u16 spnego_blob_len;
1310 char *neg_blob;
1311 int sz, rc;
1312
1313 ksmbd_debug(SMB, "negotiate phase\n");
Namjae Jeonce53d362021-12-15 14:57:27 +09001314 rc = ksmbd_decode_ntlmssp_neg_blob(negblob, negblob_len, work->conn);
Namjae Jeone2f34482021-03-16 10:49:09 +09001315 if (rc)
1316 return rc;
1317
1318 sz = le16_to_cpu(rsp->SecurityBufferOffset);
1319 chgblob =
1320 (struct challenge_message *)((char *)&rsp->hdr.ProtocolId + sz);
1321 memset(chgblob, 0, sizeof(struct challenge_message));
1322
1323 if (!work->conn->use_spnego) {
Namjae Jeonce53d362021-12-15 14:57:27 +09001324 sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->conn);
Namjae Jeone2f34482021-03-16 10:49:09 +09001325 if (sz < 0)
1326 return -ENOMEM;
1327
1328 rsp->SecurityBufferLength = cpu_to_le16(sz);
1329 return 0;
1330 }
1331
1332 sz = sizeof(struct challenge_message);
1333 sz += (strlen(ksmbd_netbios_name()) * 2 + 1 + 4) * 6;
1334
1335 neg_blob = kzalloc(sz, GFP_KERNEL);
1336 if (!neg_blob)
1337 return -ENOMEM;
1338
1339 chgblob = (struct challenge_message *)neg_blob;
Namjae Jeonce53d362021-12-15 14:57:27 +09001340 sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->conn);
Namjae Jeone2f34482021-03-16 10:49:09 +09001341 if (sz < 0) {
1342 rc = -ENOMEM;
1343 goto out;
1344 }
1345
Namjae Jeon070fb212021-05-26 17:57:12 +09001346 rc = build_spnego_ntlmssp_neg_blob(&spnego_blob, &spnego_blob_len,
1347 neg_blob, sz);
Namjae Jeone2f34482021-03-16 10:49:09 +09001348 if (rc) {
1349 rc = -ENOMEM;
1350 goto out;
1351 }
1352
1353 sz = le16_to_cpu(rsp->SecurityBufferOffset);
1354 memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len);
1355 rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len);
1356
1357out:
1358 kfree(spnego_blob);
1359 kfree(neg_blob);
1360 return rc;
1361}
1362
1363static struct authenticate_message *user_authblob(struct ksmbd_conn *conn,
Namjae Jeon070fb212021-05-26 17:57:12 +09001364 struct smb2_sess_setup_req *req)
Namjae Jeone2f34482021-03-16 10:49:09 +09001365{
1366 int sz;
1367
1368 if (conn->use_spnego && conn->mechToken)
1369 return (struct authenticate_message *)conn->mechToken;
1370
1371 sz = le16_to_cpu(req->SecurityBufferOffset);
1372 return (struct authenticate_message *)((char *)&req->hdr.ProtocolId
1373 + sz);
1374}
1375
1376static struct ksmbd_user *session_user(struct ksmbd_conn *conn,
Namjae Jeon070fb212021-05-26 17:57:12 +09001377 struct smb2_sess_setup_req *req)
Namjae Jeone2f34482021-03-16 10:49:09 +09001378{
1379 struct authenticate_message *authblob;
1380 struct ksmbd_user *user;
1381 char *name;
Marios Makassikis0d994cd2021-10-19 17:39:38 +02001382 unsigned int auth_msg_len, name_off, name_len, secbuf_len;
Namjae Jeone2f34482021-03-16 10:49:09 +09001383
Marios Makassikis0d994cd2021-10-19 17:39:38 +02001384 secbuf_len = le16_to_cpu(req->SecurityBufferLength);
1385 if (secbuf_len < sizeof(struct authenticate_message)) {
1386 ksmbd_debug(SMB, "blob len %d too small\n", secbuf_len);
1387 return NULL;
1388 }
Namjae Jeone2f34482021-03-16 10:49:09 +09001389 authblob = user_authblob(conn, req);
Marios Makassikis0d994cd2021-10-19 17:39:38 +02001390 name_off = le32_to_cpu(authblob->UserName.BufferOffset);
1391 name_len = le16_to_cpu(authblob->UserName.Length);
1392 auth_msg_len = le16_to_cpu(req->SecurityBufferOffset) + secbuf_len;
1393
1394 if (auth_msg_len < (u64)name_off + name_len)
1395 return NULL;
1396
1397 name = smb_strndup_from_utf16((const char *)authblob + name_off,
1398 name_len,
Namjae Jeone2f34482021-03-16 10:49:09 +09001399 true,
1400 conn->local_nls);
1401 if (IS_ERR(name)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09001402 pr_err("cannot allocate memory\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09001403 return NULL;
1404 }
1405
1406 ksmbd_debug(SMB, "session setup request for user %s\n", name);
1407 user = ksmbd_login_user(name);
1408 kfree(name);
1409 return user;
1410}
1411
1412static int ntlm_authenticate(struct ksmbd_work *work)
1413{
Namjae Jeoncb451722021-11-03 08:08:44 +09001414 struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf);
1415 struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09001416 struct ksmbd_conn *conn = work->conn;
1417 struct ksmbd_session *sess = work->sess;
1418 struct channel *chann = NULL;
1419 struct ksmbd_user *user;
Namjae Jeon64b39f42021-03-30 14:25:35 +09001420 u64 prev_id;
Namjae Jeone2f34482021-03-16 10:49:09 +09001421 int sz, rc;
1422
1423 ksmbd_debug(SMB, "authenticate phase\n");
1424 if (conn->use_spnego) {
1425 unsigned char *spnego_blob;
1426 u16 spnego_blob_len;
1427
1428 rc = build_spnego_ntlmssp_auth_blob(&spnego_blob,
1429 &spnego_blob_len,
1430 0);
1431 if (rc)
1432 return -ENOMEM;
1433
1434 sz = le16_to_cpu(rsp->SecurityBufferOffset);
Namjae Jeon64b39f42021-03-30 14:25:35 +09001435 memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len);
Namjae Jeone2f34482021-03-16 10:49:09 +09001436 rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len);
1437 kfree(spnego_blob);
Namjae Jeoncb451722021-11-03 08:08:44 +09001438 inc_rfc1001_len(work->response_buf, spnego_blob_len - 1);
Namjae Jeone2f34482021-03-16 10:49:09 +09001439 }
1440
1441 user = session_user(conn, req);
1442 if (!user) {
1443 ksmbd_debug(SMB, "Unknown user name or an error\n");
Namjae Jeon58090b12021-07-16 14:52:09 +09001444 return -EPERM;
Namjae Jeone2f34482021-03-16 10:49:09 +09001445 }
1446
1447 /* Check for previous session */
1448 prev_id = le64_to_cpu(req->PreviousSessionId);
1449 if (prev_id && prev_id != sess->id)
Namjae Jeone4d3e6b2022-07-22 10:15:10 +09001450 destroy_previous_session(conn, user, prev_id);
Namjae Jeone2f34482021-03-16 10:49:09 +09001451
1452 if (sess->state == SMB2_SESSION_VALID) {
1453 /*
1454 * Reuse session if anonymous try to connect
1455 * on reauthetication.
1456 */
1457 if (ksmbd_anonymous_user(user)) {
1458 ksmbd_free_user(user);
1459 return 0;
1460 }
Namjae Jeona58b45a2021-12-16 10:26:43 +09001461
1462 if (!ksmbd_compare_user(sess->user, user)) {
1463 ksmbd_free_user(user);
1464 return -EPERM;
1465 }
1466 ksmbd_free_user(user);
1467 } else {
1468 sess->user = user;
Namjae Jeone2f34482021-03-16 10:49:09 +09001469 }
1470
Namjae Jeone2f34482021-03-16 10:49:09 +09001471 if (user_guest(sess->user)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001472 rsp->SessionFlags = SMB2_SESSION_FLAG_IS_GUEST_LE;
1473 } else {
1474 struct authenticate_message *authblob;
1475
1476 authblob = user_authblob(conn, req);
1477 sz = le16_to_cpu(req->SecurityBufferLength);
Namjae Jeonce53d362021-12-15 14:57:27 +09001478 rc = ksmbd_decode_ntlmssp_auth_blob(authblob, sz, conn, sess);
Namjae Jeone2f34482021-03-16 10:49:09 +09001479 if (rc) {
1480 set_user_flag(sess->user, KSMBD_USER_FLAG_BAD_PASSWORD);
1481 ksmbd_debug(SMB, "authentication failed\n");
Namjae Jeon58090b12021-07-16 14:52:09 +09001482 return -EPERM;
Namjae Jeone2f34482021-03-16 10:49:09 +09001483 }
Namjae Jeonac090d92022-01-17 22:16:01 +09001484 }
Namjae Jeone2f34482021-03-16 10:49:09 +09001485
Namjae Jeonac090d92022-01-17 22:16:01 +09001486 /*
1487 * If session state is SMB2_SESSION_VALID, We can assume
1488 * that it is reauthentication. And the user/password
1489 * has been verified, so return it here.
1490 */
1491 if (sess->state == SMB2_SESSION_VALID) {
1492 if (conn->binding)
1493 goto binding_session;
1494 return 0;
1495 }
1496
1497 if ((rsp->SessionFlags != SMB2_SESSION_FLAG_IS_GUEST_LE &&
1498 (conn->sign || server_conf.enforced_signing)) ||
1499 (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
1500 sess->sign = true;
1501
1502 if (smb3_encryption_negotiated(conn) &&
1503 !(req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) {
Namjae Jeonaf7c39d2022-07-25 13:36:52 +09001504 rc = conn->ops->generate_encryptionkey(conn, sess);
Namjae Jeonac090d92022-01-17 22:16:01 +09001505 if (rc) {
1506 ksmbd_debug(SMB,
1507 "SMB3 encryption key generation failed\n");
1508 return -EINVAL;
1509 }
1510 sess->enc = true;
Namjae Jeon37ba7b02022-10-29 00:01:38 +09001511 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION)
1512 rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09001513 /*
Namjae Jeonac090d92022-01-17 22:16:01 +09001514 * signing is disable if encryption is enable
1515 * on this session
Namjae Jeone2f34482021-03-16 10:49:09 +09001516 */
Namjae Jeonac090d92022-01-17 22:16:01 +09001517 sess->sign = false;
Namjae Jeone2f34482021-03-16 10:49:09 +09001518 }
1519
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001520binding_session:
Namjae Jeone2f34482021-03-16 10:49:09 +09001521 if (conn->dialect >= SMB30_PROT_ID) {
Namjae Jeon8e06b312022-07-22 10:15:57 +09001522 read_lock(&sess->chann_lock);
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001523 chann = lookup_chann_list(sess, conn);
Namjae Jeon8e06b312022-07-22 10:15:57 +09001524 read_unlock(&sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09001525 if (!chann) {
1526 chann = kmalloc(sizeof(struct channel), GFP_KERNEL);
1527 if (!chann)
1528 return -ENOMEM;
1529
1530 chann->conn = conn;
1531 INIT_LIST_HEAD(&chann->chann_list);
Namjae Jeon8e06b312022-07-22 10:15:57 +09001532 write_lock(&sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09001533 list_add(&chann->chann_list, &sess->ksmbd_chann_list);
Namjae Jeon8e06b312022-07-22 10:15:57 +09001534 write_unlock(&sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09001535 }
1536 }
1537
1538 if (conn->ops->generate_signingkey) {
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001539 rc = conn->ops->generate_signingkey(sess, conn);
Namjae Jeone2f34482021-03-16 10:49:09 +09001540 if (rc) {
Namjae Jeon64b39f42021-03-30 14:25:35 +09001541 ksmbd_debug(SMB, "SMB3 signing key generation failed\n");
Namjae Jeon58090b12021-07-16 14:52:09 +09001542 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09001543 }
1544 }
1545
Namjae Jeon51a13872021-09-29 13:09:24 +09001546 if (!ksmbd_conn_lookup_dialect(conn)) {
1547 pr_err("fail to verify the dialect\n");
1548 return -ENOENT;
Namjae Jeone2f34482021-03-16 10:49:09 +09001549 }
1550 return 0;
1551}
1552
1553#ifdef CONFIG_SMB_SERVER_KERBEROS5
1554static int krb5_authenticate(struct ksmbd_work *work)
1555{
Namjae Jeoncb451722021-11-03 08:08:44 +09001556 struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf);
1557 struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09001558 struct ksmbd_conn *conn = work->conn;
1559 struct ksmbd_session *sess = work->sess;
1560 char *in_blob, *out_blob;
1561 struct channel *chann = NULL;
Namjae Jeon64b39f42021-03-30 14:25:35 +09001562 u64 prev_sess_id;
Namjae Jeone2f34482021-03-16 10:49:09 +09001563 int in_len, out_len;
1564 int retval;
1565
1566 in_blob = (char *)&req->hdr.ProtocolId +
1567 le16_to_cpu(req->SecurityBufferOffset);
1568 in_len = le16_to_cpu(req->SecurityBufferLength);
1569 out_blob = (char *)&rsp->hdr.ProtocolId +
1570 le16_to_cpu(rsp->SecurityBufferOffset);
1571 out_len = work->response_sz -
Namjae Jeoncb451722021-11-03 08:08:44 +09001572 (le16_to_cpu(rsp->SecurityBufferOffset) + 4);
Namjae Jeone2f34482021-03-16 10:49:09 +09001573
1574 /* Check previous session */
1575 prev_sess_id = le64_to_cpu(req->PreviousSessionId);
1576 if (prev_sess_id && prev_sess_id != sess->id)
Namjae Jeone4d3e6b2022-07-22 10:15:10 +09001577 destroy_previous_session(conn, sess->user, prev_sess_id);
Namjae Jeone2f34482021-03-16 10:49:09 +09001578
1579 if (sess->state == SMB2_SESSION_VALID)
1580 ksmbd_free_user(sess->user);
1581
1582 retval = ksmbd_krb5_authenticate(sess, in_blob, in_len,
Namjae Jeon070fb212021-05-26 17:57:12 +09001583 out_blob, &out_len);
Namjae Jeone2f34482021-03-16 10:49:09 +09001584 if (retval) {
1585 ksmbd_debug(SMB, "krb5 authentication failed\n");
Namjae Jeon58090b12021-07-16 14:52:09 +09001586 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09001587 }
1588 rsp->SecurityBufferLength = cpu_to_le16(out_len);
Namjae Jeoncb451722021-11-03 08:08:44 +09001589 inc_rfc1001_len(work->response_buf, out_len - 1);
Namjae Jeone2f34482021-03-16 10:49:09 +09001590
1591 if ((conn->sign || server_conf.enforced_signing) ||
Namjae Jeon64b39f42021-03-30 14:25:35 +09001592 (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
Namjae Jeone2f34482021-03-16 10:49:09 +09001593 sess->sign = true;
1594
Marcos Del Sol Vives83912d62021-12-16 11:37:22 +01001595 if (smb3_encryption_negotiated(conn)) {
Namjae Jeonaf7c39d2022-07-25 13:36:52 +09001596 retval = conn->ops->generate_encryptionkey(conn, sess);
Namjae Jeone2f34482021-03-16 10:49:09 +09001597 if (retval) {
1598 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09001599 "SMB3 encryption key generation failed\n");
Namjae Jeon58090b12021-07-16 14:52:09 +09001600 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09001601 }
1602 sess->enc = true;
Namjae Jeon37ba7b02022-10-29 00:01:38 +09001603 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION)
1604 rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09001605 sess->sign = false;
1606 }
1607
1608 if (conn->dialect >= SMB30_PROT_ID) {
Namjae Jeon8e06b312022-07-22 10:15:57 +09001609 read_lock(&sess->chann_lock);
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001610 chann = lookup_chann_list(sess, conn);
Namjae Jeon8e06b312022-07-22 10:15:57 +09001611 read_unlock(&sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09001612 if (!chann) {
1613 chann = kmalloc(sizeof(struct channel), GFP_KERNEL);
1614 if (!chann)
1615 return -ENOMEM;
1616
1617 chann->conn = conn;
1618 INIT_LIST_HEAD(&chann->chann_list);
Namjae Jeon8e06b312022-07-22 10:15:57 +09001619 write_lock(&sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09001620 list_add(&chann->chann_list, &sess->ksmbd_chann_list);
Namjae Jeon8e06b312022-07-22 10:15:57 +09001621 write_unlock(&sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09001622 }
1623 }
1624
1625 if (conn->ops->generate_signingkey) {
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001626 retval = conn->ops->generate_signingkey(sess, conn);
Namjae Jeone2f34482021-03-16 10:49:09 +09001627 if (retval) {
Namjae Jeon64b39f42021-03-30 14:25:35 +09001628 ksmbd_debug(SMB, "SMB3 signing key generation failed\n");
Namjae Jeon58090b12021-07-16 14:52:09 +09001629 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09001630 }
1631 }
1632
Namjae Jeon51a13872021-09-29 13:09:24 +09001633 if (!ksmbd_conn_lookup_dialect(conn)) {
1634 pr_err("fail to verify the dialect\n");
1635 return -ENOENT;
Namjae Jeone2f34482021-03-16 10:49:09 +09001636 }
1637 return 0;
1638}
1639#else
1640static int krb5_authenticate(struct ksmbd_work *work)
1641{
1642 return -EOPNOTSUPP;
1643}
1644#endif
1645
1646int smb2_sess_setup(struct ksmbd_work *work)
1647{
1648 struct ksmbd_conn *conn = work->conn;
Namjae Jeoncb451722021-11-03 08:08:44 +09001649 struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf);
1650 struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09001651 struct ksmbd_session *sess;
1652 struct negotiate_message *negblob;
Marios Makassikis0d994cd2021-10-19 17:39:38 +02001653 unsigned int negblob_len, negblob_off;
Namjae Jeone2f34482021-03-16 10:49:09 +09001654 int rc = 0;
1655
1656 ksmbd_debug(SMB, "Received request for session setup\n");
1657
1658 rsp->StructureSize = cpu_to_le16(9);
1659 rsp->SessionFlags = 0;
1660 rsp->SecurityBufferOffset = cpu_to_le16(72);
1661 rsp->SecurityBufferLength = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09001662 inc_rfc1001_len(work->response_buf, 9);
Namjae Jeone2f34482021-03-16 10:49:09 +09001663
1664 if (!req->hdr.SessionId) {
1665 sess = ksmbd_smb2_session_create();
1666 if (!sess) {
1667 rc = -ENOMEM;
1668 goto out_err;
1669 }
1670 rsp->hdr.SessionId = cpu_to_le64(sess->id);
Namjae Jeone4d3e6b2022-07-22 10:15:10 +09001671 rc = ksmbd_session_register(conn, sess);
1672 if (rc)
1673 goto out_err;
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001674 } else if (conn->dialect >= SMB30_PROT_ID &&
1675 (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
1676 req->Flags & SMB2_SESSION_REQ_FLAG_BINDING) {
1677 u64 sess_id = le64_to_cpu(req->hdr.SessionId);
1678
1679 sess = ksmbd_session_lookup_slowpath(sess_id);
1680 if (!sess) {
1681 rc = -ENOENT;
1682 goto out_err;
1683 }
1684
Namjae Jeonaf7c39d2022-07-25 13:36:52 +09001685 if (conn->dialect != sess->dialect) {
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001686 rc = -EINVAL;
1687 goto out_err;
1688 }
1689
1690 if (!(req->hdr.Flags & SMB2_FLAGS_SIGNED)) {
1691 rc = -EINVAL;
1692 goto out_err;
1693 }
1694
Namjae Jeonaf7c39d2022-07-25 13:36:52 +09001695 if (strncmp(conn->ClientGUID, sess->ClientGUID,
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001696 SMB2_CLIENT_GUID_SIZE)) {
1697 rc = -ENOENT;
1698 goto out_err;
1699 }
1700
1701 if (sess->state == SMB2_SESSION_IN_PROGRESS) {
1702 rc = -EACCES;
1703 goto out_err;
1704 }
1705
1706 if (sess->state == SMB2_SESSION_EXPIRED) {
1707 rc = -EFAULT;
1708 goto out_err;
1709 }
1710
1711 if (ksmbd_session_lookup(conn, sess_id)) {
1712 rc = -EACCES;
1713 goto out_err;
1714 }
1715
1716 conn->binding = true;
1717 } else if ((conn->dialect < SMB30_PROT_ID ||
1718 server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
1719 (req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) {
Colin Ian King4951a842021-07-06 13:05:01 +01001720 sess = NULL;
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001721 rc = -EACCES;
1722 goto out_err;
Namjae Jeone2f34482021-03-16 10:49:09 +09001723 } else {
1724 sess = ksmbd_session_lookup(conn,
Namjae Jeon070fb212021-05-26 17:57:12 +09001725 le64_to_cpu(req->hdr.SessionId));
Namjae Jeone2f34482021-03-16 10:49:09 +09001726 if (!sess) {
1727 rc = -ENOENT;
Namjae Jeone2f34482021-03-16 10:49:09 +09001728 goto out_err;
1729 }
1730 }
1731 work->sess = sess;
1732
1733 if (sess->state == SMB2_SESSION_EXPIRED)
1734 sess->state = SMB2_SESSION_IN_PROGRESS;
1735
Marios Makassikis0d994cd2021-10-19 17:39:38 +02001736 negblob_off = le16_to_cpu(req->SecurityBufferOffset);
1737 negblob_len = le16_to_cpu(req->SecurityBufferLength);
Namjae Jeoncb451722021-11-03 08:08:44 +09001738 if (negblob_off < offsetof(struct smb2_sess_setup_req, Buffer) ||
Christophe JAILLETf8fbfd82021-11-07 16:22:57 +01001739 negblob_len < offsetof(struct negotiate_message, NegotiateFlags)) {
1740 rc = -EINVAL;
1741 goto out_err;
1742 }
Namjae Jeone2f34482021-03-16 10:49:09 +09001743
Marios Makassikis0d994cd2021-10-19 17:39:38 +02001744 negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId +
1745 negblob_off);
1746
1747 if (decode_negotiation_token(conn, negblob, negblob_len) == 0) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001748 if (conn->mechToken)
1749 negblob = (struct negotiate_message *)conn->mechToken;
1750 }
1751
1752 if (server_conf.auth_mechs & conn->auth_mechs) {
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001753 rc = generate_preauth_hash(work);
1754 if (rc)
1755 goto out_err;
1756
Namjae Jeone2f34482021-03-16 10:49:09 +09001757 if (conn->preferred_auth_mech &
1758 (KSMBD_AUTH_KRB5 | KSMBD_AUTH_MSKRB5)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001759 rc = krb5_authenticate(work);
1760 if (rc) {
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001761 rc = -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09001762 goto out_err;
1763 }
1764
1765 ksmbd_conn_set_good(work);
1766 sess->state = SMB2_SESSION_VALID;
Muhammad Usama Anjum822bc8e2021-04-02 09:25:35 +09001767 kfree(sess->Preauth_HashValue);
Namjae Jeone2f34482021-03-16 10:49:09 +09001768 sess->Preauth_HashValue = NULL;
1769 } else if (conn->preferred_auth_mech == KSMBD_AUTH_NTLMSSP) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001770 if (negblob->MessageType == NtLmNegotiate) {
Marios Makassikis0d994cd2021-10-19 17:39:38 +02001771 rc = ntlm_negotiate(work, negblob, negblob_len);
Namjae Jeone2f34482021-03-16 10:49:09 +09001772 if (rc)
1773 goto out_err;
1774 rsp->hdr.Status =
1775 STATUS_MORE_PROCESSING_REQUIRED;
1776 /*
1777 * Note: here total size -1 is done as an
1778 * adjustment for 0 size blob
1779 */
Namjae Jeoncb451722021-11-03 08:08:44 +09001780 inc_rfc1001_len(work->response_buf,
1781 le16_to_cpu(rsp->SecurityBufferLength) - 1);
Namjae Jeone2f34482021-03-16 10:49:09 +09001782
1783 } else if (negblob->MessageType == NtLmAuthenticate) {
1784 rc = ntlm_authenticate(work);
1785 if (rc)
1786 goto out_err;
1787
1788 ksmbd_conn_set_good(work);
1789 sess->state = SMB2_SESSION_VALID;
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001790 if (conn->binding) {
1791 struct preauth_session *preauth_sess;
1792
1793 preauth_sess =
1794 ksmbd_preauth_session_lookup(conn, sess->id);
1795 if (preauth_sess) {
1796 list_del(&preauth_sess->preauth_entry);
1797 kfree(preauth_sess);
1798 }
1799 }
Muhammad Usama Anjum822bc8e2021-04-02 09:25:35 +09001800 kfree(sess->Preauth_HashValue);
Namjae Jeone2f34482021-03-16 10:49:09 +09001801 sess->Preauth_HashValue = NULL;
1802 }
1803 } else {
1804 /* TODO: need one more negotiation */
Namjae Jeonbde16942021-06-28 15:23:19 +09001805 pr_err("Not support the preferred authentication\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09001806 rc = -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09001807 }
1808 } else {
Namjae Jeonbde16942021-06-28 15:23:19 +09001809 pr_err("Not support authentication\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09001810 rc = -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09001811 }
1812
1813out_err:
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001814 if (rc == -EINVAL)
1815 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1816 else if (rc == -ENOENT)
1817 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
1818 else if (rc == -EACCES)
1819 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
1820 else if (rc == -EFAULT)
1821 rsp->hdr.Status = STATUS_NETWORK_SESSION_EXPIRED;
Namjae Jeon58090b12021-07-16 14:52:09 +09001822 else if (rc == -ENOMEM)
1823 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
Namjae Jeonf5a544e2021-06-18 10:04:19 +09001824 else if (rc)
1825 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1826
Namjae Jeone2f34482021-03-16 10:49:09 +09001827 if (conn->use_spnego && conn->mechToken) {
1828 kfree(conn->mechToken);
1829 conn->mechToken = NULL;
1830 }
1831
Namjae Jeon621be842021-10-13 17:28:31 +09001832 if (rc < 0) {
1833 /*
1834 * SecurityBufferOffset should be set to zero
1835 * in session setup error response.
1836 */
1837 rsp->SecurityBufferOffset = 0;
1838
1839 if (sess) {
1840 bool try_delay = false;
1841
1842 /*
1843 * To avoid dictionary attacks (repeated session setups rapidly sent) to
1844 * connect to server, ksmbd make a delay of a 5 seconds on session setup
1845 * failure to make it harder to send enough random connection requests
1846 * to break into a server.
1847 */
1848 if (sess->user && sess->user->flags & KSMBD_USER_FLAG_DELAY_SESSION)
1849 try_delay = true;
1850
Namjae Jeone4d3e6b2022-07-22 10:15:10 +09001851 xa_erase(&conn->sessions, sess->id);
Namjae Jeon621be842021-10-13 17:28:31 +09001852 ksmbd_session_destroy(sess);
1853 work->sess = NULL;
1854 if (try_delay)
1855 ssleep(5);
1856 }
Namjae Jeone2f34482021-03-16 10:49:09 +09001857 }
1858
1859 return rc;
1860}
1861
1862/**
1863 * smb2_tree_connect() - handler for smb2 tree connect command
1864 * @work: smb work containing smb request buffer
1865 *
1866 * Return: 0 on success, otherwise error
1867 */
1868int smb2_tree_connect(struct ksmbd_work *work)
1869{
1870 struct ksmbd_conn *conn = work->conn;
Namjae Jeoncb451722021-11-03 08:08:44 +09001871 struct smb2_tree_connect_req *req = smb2_get_msg(work->request_buf);
1872 struct smb2_tree_connect_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09001873 struct ksmbd_session *sess = work->sess;
1874 char *treename = NULL, *name = NULL;
1875 struct ksmbd_tree_conn_status status;
1876 struct ksmbd_share_config *share;
1877 int rc = -EINVAL;
1878
1879 treename = smb_strndup_from_utf16(req->Buffer,
Namjae Jeon070fb212021-05-26 17:57:12 +09001880 le16_to_cpu(req->PathLength), true,
1881 conn->local_nls);
Namjae Jeone2f34482021-03-16 10:49:09 +09001882 if (IS_ERR(treename)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09001883 pr_err("treename is NULL\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09001884 status.ret = KSMBD_TREE_CONN_STATUS_ERROR;
1885 goto out_err1;
1886 }
1887
Atte Heikkilä16b5f542022-09-15 22:49:11 +09001888 name = ksmbd_extract_sharename(conn->um, treename);
Namjae Jeone2f34482021-03-16 10:49:09 +09001889 if (IS_ERR(name)) {
1890 status.ret = KSMBD_TREE_CONN_STATUS_ERROR;
1891 goto out_err1;
1892 }
1893
1894 ksmbd_debug(SMB, "tree connect request for tree %s treename %s\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09001895 name, treename);
Namjae Jeone2f34482021-03-16 10:49:09 +09001896
Namjae Jeonaf7c39d2022-07-25 13:36:52 +09001897 status = ksmbd_tree_conn_connect(conn, sess, name);
Namjae Jeone2f34482021-03-16 10:49:09 +09001898 if (status.ret == KSMBD_TREE_CONN_STATUS_OK)
1899 rsp->hdr.Id.SyncId.TreeId = cpu_to_le32(status.tree_conn->id);
1900 else
1901 goto out_err1;
1902
1903 share = status.tree_conn->share_conf;
1904 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
1905 ksmbd_debug(SMB, "IPC share path request\n");
1906 rsp->ShareType = SMB2_SHARE_TYPE_PIPE;
1907 rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE |
1908 FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE |
1909 FILE_DELETE_LE | FILE_READ_CONTROL_LE |
1910 FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE |
1911 FILE_SYNCHRONIZE_LE;
1912 } else {
1913 rsp->ShareType = SMB2_SHARE_TYPE_DISK;
1914 rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE |
1915 FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE;
1916 if (test_tree_conn_flag(status.tree_conn,
1917 KSMBD_TREE_CONN_FLAG_WRITABLE)) {
1918 rsp->MaximalAccess |= FILE_WRITE_DATA_LE |
1919 FILE_APPEND_DATA_LE | FILE_WRITE_EA_LE |
Wan Jiabing3aefd542021-06-07 12:54:32 +08001920 FILE_DELETE_LE | FILE_WRITE_ATTRIBUTES_LE |
1921 FILE_DELETE_CHILD_LE | FILE_READ_CONTROL_LE |
1922 FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE |
1923 FILE_SYNCHRONIZE_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09001924 }
1925 }
1926
1927 status.tree_conn->maximal_access = le32_to_cpu(rsp->MaximalAccess);
1928 if (conn->posix_ext_supported)
1929 status.tree_conn->posix_extensions = true;
1930
1931out_err1:
1932 rsp->StructureSize = cpu_to_le16(16);
1933 rsp->Capabilities = 0;
1934 rsp->Reserved = 0;
1935 /* default manual caching */
1936 rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING;
Namjae Jeoncb451722021-11-03 08:08:44 +09001937 inc_rfc1001_len(work->response_buf, 16);
Namjae Jeone2f34482021-03-16 10:49:09 +09001938
1939 if (!IS_ERR(treename))
1940 kfree(treename);
1941 if (!IS_ERR(name))
1942 kfree(name);
1943
1944 switch (status.ret) {
1945 case KSMBD_TREE_CONN_STATUS_OK:
1946 rsp->hdr.Status = STATUS_SUCCESS;
1947 rc = 0;
1948 break;
Atte Heikkilä4963d742022-08-09 01:02:14 +03001949 case -ESTALE:
Namjae Jeonfe548332022-08-08 21:56:48 +09001950 case -ENOENT:
Namjae Jeone2f34482021-03-16 10:49:09 +09001951 case KSMBD_TREE_CONN_STATUS_NO_SHARE:
Namjae Jeonfe548332022-08-08 21:56:48 +09001952 rsp->hdr.Status = STATUS_BAD_NETWORK_NAME;
Namjae Jeone2f34482021-03-16 10:49:09 +09001953 break;
1954 case -ENOMEM:
1955 case KSMBD_TREE_CONN_STATUS_NOMEM:
1956 rsp->hdr.Status = STATUS_NO_MEMORY;
1957 break;
1958 case KSMBD_TREE_CONN_STATUS_ERROR:
1959 case KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS:
1960 case KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS:
1961 rsp->hdr.Status = STATUS_ACCESS_DENIED;
1962 break;
1963 case -EINVAL:
1964 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1965 break;
1966 default:
1967 rsp->hdr.Status = STATUS_ACCESS_DENIED;
1968 }
1969
1970 return rc;
1971}
1972
1973/**
1974 * smb2_create_open_flags() - convert smb open flags to unix open flags
1975 * @file_present: is file already present
1976 * @access: file access flags
1977 * @disposition: file disposition flags
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09001978 * @may_flags: set with MAY_ flags
Namjae Jeone2f34482021-03-16 10:49:09 +09001979 *
1980 * Return: file open flags
1981 */
1982static int smb2_create_open_flags(bool file_present, __le32 access,
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09001983 __le32 disposition,
1984 int *may_flags)
Namjae Jeone2f34482021-03-16 10:49:09 +09001985{
1986 int oflags = O_NONBLOCK | O_LARGEFILE;
1987
1988 if (access & FILE_READ_DESIRED_ACCESS_LE &&
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09001989 access & FILE_WRITE_DESIRE_ACCESS_LE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001990 oflags |= O_RDWR;
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09001991 *may_flags = MAY_OPEN | MAY_READ | MAY_WRITE;
1992 } else if (access & FILE_WRITE_DESIRE_ACCESS_LE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09001993 oflags |= O_WRONLY;
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09001994 *may_flags = MAY_OPEN | MAY_WRITE;
1995 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09001996 oflags |= O_RDONLY;
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09001997 *may_flags = MAY_OPEN | MAY_READ;
1998 }
Namjae Jeone2f34482021-03-16 10:49:09 +09001999
2000 if (access == FILE_READ_ATTRIBUTES_LE)
2001 oflags |= O_PATH;
2002
2003 if (file_present) {
2004 switch (disposition & FILE_CREATE_MASK_LE) {
2005 case FILE_OPEN_LE:
2006 case FILE_CREATE_LE:
2007 break;
2008 case FILE_SUPERSEDE_LE:
2009 case FILE_OVERWRITE_LE:
2010 case FILE_OVERWRITE_IF_LE:
2011 oflags |= O_TRUNC;
2012 break;
2013 default:
2014 break;
2015 }
2016 } else {
2017 switch (disposition & FILE_CREATE_MASK_LE) {
2018 case FILE_SUPERSEDE_LE:
2019 case FILE_CREATE_LE:
2020 case FILE_OPEN_IF_LE:
2021 case FILE_OVERWRITE_IF_LE:
2022 oflags |= O_CREAT;
2023 break;
2024 case FILE_OPEN_LE:
2025 case FILE_OVERWRITE_LE:
2026 oflags &= ~O_CREAT;
2027 break;
2028 default:
2029 break;
2030 }
2031 }
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09002032
Namjae Jeone2f34482021-03-16 10:49:09 +09002033 return oflags;
2034}
2035
2036/**
2037 * smb2_tree_disconnect() - handler for smb tree connect request
2038 * @work: smb work containing request buffer
2039 *
2040 * Return: 0
2041 */
2042int smb2_tree_disconnect(struct ksmbd_work *work)
2043{
Namjae Jeoncb451722021-11-03 08:08:44 +09002044 struct smb2_tree_disconnect_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09002045 struct ksmbd_session *sess = work->sess;
2046 struct ksmbd_tree_connect *tcon = work->tcon;
2047
2048 rsp->StructureSize = cpu_to_le16(4);
Namjae Jeoncb451722021-11-03 08:08:44 +09002049 inc_rfc1001_len(work->response_buf, 4);
Namjae Jeone2f34482021-03-16 10:49:09 +09002050
2051 ksmbd_debug(SMB, "request\n");
2052
2053 if (!tcon) {
Namjae Jeoncb451722021-11-03 08:08:44 +09002054 struct smb2_tree_disconnect_req *req =
2055 smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09002056
2057 ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId);
2058 rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED;
2059 smb2_set_err_rsp(work);
2060 return 0;
2061 }
2062
2063 ksmbd_close_tree_conn_fds(work);
2064 ksmbd_tree_conn_disconnect(sess, tcon);
Namjae Jeoncf6531d2022-07-28 21:57:08 +09002065 work->tcon = NULL;
Namjae Jeone2f34482021-03-16 10:49:09 +09002066 return 0;
2067}
2068
2069/**
2070 * smb2_session_logoff() - handler for session log off request
2071 * @work: smb work containing request buffer
2072 *
2073 * Return: 0
2074 */
2075int smb2_session_logoff(struct ksmbd_work *work)
2076{
2077 struct ksmbd_conn *conn = work->conn;
Namjae Jeoncb451722021-11-03 08:08:44 +09002078 struct smb2_logoff_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09002079 struct ksmbd_session *sess = work->sess;
2080
2081 rsp->StructureSize = cpu_to_le16(4);
Namjae Jeoncb451722021-11-03 08:08:44 +09002082 inc_rfc1001_len(work->response_buf, 4);
Namjae Jeone2f34482021-03-16 10:49:09 +09002083
2084 ksmbd_debug(SMB, "request\n");
2085
Namjae Jeone2f34482021-03-16 10:49:09 +09002086 /* setting CifsExiting here may race with start_tcp_sess */
2087 ksmbd_conn_set_need_reconnect(work);
2088 ksmbd_close_session_fds(work);
2089 ksmbd_conn_wait_idle(conn);
2090
2091 if (ksmbd_tree_conn_session_logoff(sess)) {
Namjae Jeoncb451722021-11-03 08:08:44 +09002092 struct smb2_logoff_req *req = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09002093
2094 ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId);
2095 rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED;
2096 smb2_set_err_rsp(work);
2097 return 0;
2098 }
2099
2100 ksmbd_destroy_file_table(&sess->file_table);
2101 sess->state = SMB2_SESSION_EXPIRED;
2102
2103 ksmbd_free_user(sess->user);
2104 sess->user = NULL;
2105
2106 /* let start_tcp_sess free connection info now */
2107 ksmbd_conn_set_need_negotiate(work);
2108 return 0;
2109}
2110
2111/**
2112 * create_smb2_pipe() - create IPC pipe
2113 * @work: smb work containing request buffer
2114 *
2115 * Return: 0 on success, otherwise error
2116 */
2117static noinline int create_smb2_pipe(struct ksmbd_work *work)
2118{
Namjae Jeoncb451722021-11-03 08:08:44 +09002119 struct smb2_create_rsp *rsp = smb2_get_msg(work->response_buf);
2120 struct smb2_create_req *req = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09002121 int id;
2122 int err;
2123 char *name;
2124
2125 name = smb_strndup_from_utf16(req->Buffer, le16_to_cpu(req->NameLength),
Namjae Jeon070fb212021-05-26 17:57:12 +09002126 1, work->conn->local_nls);
Namjae Jeone2f34482021-03-16 10:49:09 +09002127 if (IS_ERR(name)) {
2128 rsp->hdr.Status = STATUS_NO_MEMORY;
2129 err = PTR_ERR(name);
2130 goto out;
2131 }
2132
2133 id = ksmbd_session_rpc_open(work->sess, name);
Marios Makassikis79caa962021-05-06 11:38:35 +09002134 if (id < 0) {
Namjae Jeonbde16942021-06-28 15:23:19 +09002135 pr_err("Unable to open RPC pipe: %d\n", id);
Marios Makassikis79caa962021-05-06 11:38:35 +09002136 err = id;
2137 goto out;
2138 }
Namjae Jeone2f34482021-03-16 10:49:09 +09002139
Marios Makassikis79caa962021-05-06 11:38:35 +09002140 rsp->hdr.Status = STATUS_SUCCESS;
Namjae Jeone2f34482021-03-16 10:49:09 +09002141 rsp->StructureSize = cpu_to_le16(89);
2142 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_NONE;
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09002143 rsp->Flags = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09002144 rsp->CreateAction = cpu_to_le32(FILE_OPENED);
2145
2146 rsp->CreationTime = cpu_to_le64(0);
2147 rsp->LastAccessTime = cpu_to_le64(0);
2148 rsp->ChangeTime = cpu_to_le64(0);
2149 rsp->AllocationSize = cpu_to_le64(0);
2150 rsp->EndofFile = cpu_to_le64(0);
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09002151 rsp->FileAttributes = FILE_ATTRIBUTE_NORMAL_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09002152 rsp->Reserved2 = 0;
Paulo Alcantara2d004c62022-03-21 13:08:26 -03002153 rsp->VolatileFileId = id;
Namjae Jeone2f34482021-03-16 10:49:09 +09002154 rsp->PersistentFileId = 0;
2155 rsp->CreateContextsOffset = 0;
2156 rsp->CreateContextsLength = 0;
2157
Namjae Jeoncb451722021-11-03 08:08:44 +09002158 inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/
Namjae Jeone2f34482021-03-16 10:49:09 +09002159 kfree(name);
2160 return 0;
2161
2162out:
Marios Makassikis79caa962021-05-06 11:38:35 +09002163 switch (err) {
2164 case -EINVAL:
2165 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2166 break;
2167 case -ENOSPC:
2168 case -ENOMEM:
2169 rsp->hdr.Status = STATUS_NO_MEMORY;
2170 break;
2171 }
2172
2173 if (!IS_ERR(name))
2174 kfree(name);
2175
Namjae Jeone2f34482021-03-16 10:49:09 +09002176 smb2_set_err_rsp(work);
2177 return err;
2178}
2179
Namjae Jeone2f34482021-03-16 10:49:09 +09002180/**
2181 * smb2_set_ea() - handler for setting extended attributes using set
2182 * info command
2183 * @eabuf: set info command buffer
Namjae Jeon9496e262021-09-29 15:41:48 +09002184 * @buf_len: set info command buffer length
Namjae Jeone2f34482021-03-16 10:49:09 +09002185 * @path: dentry path for get ea
2186 *
2187 * Return: 0 on success, otherwise error
2188 */
Namjae Jeon9496e262021-09-29 15:41:48 +09002189static int smb2_set_ea(struct smb2_ea_info *eabuf, unsigned int buf_len,
Al Viroc22180a2022-08-04 12:51:14 -04002190 const struct path *path)
Namjae Jeone2f34482021-03-16 10:49:09 +09002191{
Hyunchul Lee465d7202021-07-03 12:10:36 +09002192 struct user_namespace *user_ns = mnt_user_ns(path->mnt);
Namjae Jeone2f34482021-03-16 10:49:09 +09002193 char *attr_name = NULL, *value;
2194 int rc = 0;
Namjae Jeon9496e262021-09-29 15:41:48 +09002195 unsigned int next = 0;
2196
2197 if (buf_len < sizeof(struct smb2_ea_info) + eabuf->EaNameLength +
2198 le16_to_cpu(eabuf->EaValueLength))
2199 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09002200
2201 attr_name = kmalloc(XATTR_NAME_MAX + 1, GFP_KERNEL);
2202 if (!attr_name)
2203 return -ENOMEM;
2204
2205 do {
2206 if (!eabuf->EaNameLength)
2207 goto next;
2208
2209 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09002210 "name : <%s>, name_len : %u, value_len : %u, next : %u\n",
2211 eabuf->name, eabuf->EaNameLength,
2212 le16_to_cpu(eabuf->EaValueLength),
2213 le32_to_cpu(eabuf->NextEntryOffset));
Namjae Jeone2f34482021-03-16 10:49:09 +09002214
2215 if (eabuf->EaNameLength >
Namjae Jeon070fb212021-05-26 17:57:12 +09002216 (XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002217 rc = -EINVAL;
2218 break;
2219 }
2220
2221 memcpy(attr_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
2222 memcpy(&attr_name[XATTR_USER_PREFIX_LEN], eabuf->name,
Namjae Jeon070fb212021-05-26 17:57:12 +09002223 eabuf->EaNameLength);
Namjae Jeone2f34482021-03-16 10:49:09 +09002224 attr_name[XATTR_USER_PREFIX_LEN + eabuf->EaNameLength] = '\0';
2225 value = (char *)&eabuf->name + eabuf->EaNameLength + 1;
2226
2227 if (!eabuf->EaValueLength) {
Hyunchul Lee465d7202021-07-03 12:10:36 +09002228 rc = ksmbd_vfs_casexattr_len(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09002229 path->dentry,
Namjae Jeone2f34482021-03-16 10:49:09 +09002230 attr_name,
2231 XATTR_USER_PREFIX_LEN +
2232 eabuf->EaNameLength);
2233
2234 /* delete the EA only when it exits */
2235 if (rc > 0) {
Hyunchul Lee465d7202021-07-03 12:10:36 +09002236 rc = ksmbd_vfs_remove_xattr(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09002237 path->dentry,
Namjae Jeone2f34482021-03-16 10:49:09 +09002238 attr_name);
2239
2240 if (rc < 0) {
2241 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09002242 "remove xattr failed(%d)\n",
2243 rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09002244 break;
2245 }
2246 }
2247
2248 /* if the EA doesn't exist, just do nothing. */
2249 rc = 0;
2250 } else {
Hyunchul Lee465d7202021-07-03 12:10:36 +09002251 rc = ksmbd_vfs_setxattr(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09002252 path->dentry, attr_name, value,
Namjae Jeon070fb212021-05-26 17:57:12 +09002253 le16_to_cpu(eabuf->EaValueLength), 0);
Namjae Jeone2f34482021-03-16 10:49:09 +09002254 if (rc < 0) {
2255 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09002256 "ksmbd_vfs_setxattr is failed(%d)\n",
2257 rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09002258 break;
2259 }
2260 }
2261
2262next:
2263 next = le32_to_cpu(eabuf->NextEntryOffset);
Namjae Jeon9496e262021-09-29 15:41:48 +09002264 if (next == 0 || buf_len < next)
2265 break;
2266 buf_len -= next;
Namjae Jeone2f34482021-03-16 10:49:09 +09002267 eabuf = (struct smb2_ea_info *)((char *)eabuf + next);
Namjae Jeon9496e262021-09-29 15:41:48 +09002268 if (next < (u32)eabuf->EaNameLength + le16_to_cpu(eabuf->EaValueLength))
2269 break;
2270
Namjae Jeone2f34482021-03-16 10:49:09 +09002271 } while (next != 0);
2272
2273 kfree(attr_name);
2274 return rc;
2275}
2276
Al Viroc22180a2022-08-04 12:51:14 -04002277static noinline int smb2_set_stream_name_xattr(const struct path *path,
Namjae Jeon070fb212021-05-26 17:57:12 +09002278 struct ksmbd_file *fp,
2279 char *stream_name, int s_type)
Namjae Jeone2f34482021-03-16 10:49:09 +09002280{
Hyunchul Lee465d7202021-07-03 12:10:36 +09002281 struct user_namespace *user_ns = mnt_user_ns(path->mnt);
Namjae Jeone2f34482021-03-16 10:49:09 +09002282 size_t xattr_stream_size;
2283 char *xattr_stream_name;
2284 int rc;
2285
2286 rc = ksmbd_vfs_xattr_stream_name(stream_name,
2287 &xattr_stream_name,
2288 &xattr_stream_size,
2289 s_type);
2290 if (rc)
2291 return rc;
2292
2293 fp->stream.name = xattr_stream_name;
2294 fp->stream.size = xattr_stream_size;
2295
2296 /* Check if there is stream prefix in xattr space */
Hyunchul Lee465d7202021-07-03 12:10:36 +09002297 rc = ksmbd_vfs_casexattr_len(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09002298 path->dentry,
Namjae Jeone2f34482021-03-16 10:49:09 +09002299 xattr_stream_name,
2300 xattr_stream_size);
2301 if (rc >= 0)
2302 return 0;
2303
2304 if (fp->cdoption == FILE_OPEN_LE) {
2305 ksmbd_debug(SMB, "XATTR stream name lookup failed: %d\n", rc);
2306 return -EBADF;
2307 }
2308
Hyunchul Lee465d7202021-07-03 12:10:36 +09002309 rc = ksmbd_vfs_setxattr(user_ns, path->dentry,
2310 xattr_stream_name, NULL, 0, 0);
Namjae Jeone2f34482021-03-16 10:49:09 +09002311 if (rc < 0)
Namjae Jeonbde16942021-06-28 15:23:19 +09002312 pr_err("Failed to store XATTR stream name :%d\n", rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09002313 return 0;
2314}
2315
Al Viroc22180a2022-08-04 12:51:14 -04002316static int smb2_remove_smb_xattrs(const struct path *path)
Namjae Jeone2f34482021-03-16 10:49:09 +09002317{
Hyunchul Lee465d7202021-07-03 12:10:36 +09002318 struct user_namespace *user_ns = mnt_user_ns(path->mnt);
Namjae Jeone2f34482021-03-16 10:49:09 +09002319 char *name, *xattr_list = NULL;
2320 ssize_t xattr_list_len;
2321 int err = 0;
2322
Hyunchul Leeef24c962021-06-30 18:25:52 +09002323 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
Namjae Jeone2f34482021-03-16 10:49:09 +09002324 if (xattr_list_len < 0) {
2325 goto out;
2326 } else if (!xattr_list_len) {
2327 ksmbd_debug(SMB, "empty xattr in the file\n");
2328 goto out;
2329 }
2330
2331 for (name = xattr_list; name - xattr_list < xattr_list_len;
2332 name += strlen(name) + 1) {
2333 ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name));
2334
Namjae Jeon17661ec2022-08-14 22:40:25 +09002335 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) &&
2336 !strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
2337 STREAM_PREFIX_LEN)) {
2338 err = ksmbd_vfs_remove_xattr(user_ns, path->dentry,
2339 name);
2340 if (err)
2341 ksmbd_debug(SMB, "remove xattr failed : %s\n",
2342 name);
2343 }
Namjae Jeone2f34482021-03-16 10:49:09 +09002344 }
2345out:
Namjae Jeon79f6b112021-04-02 12:47:14 +09002346 kvfree(xattr_list);
Namjae Jeone2f34482021-03-16 10:49:09 +09002347 return err;
2348}
2349
Al Viroc22180a2022-08-04 12:51:14 -04002350static int smb2_create_truncate(const struct path *path)
Namjae Jeone2f34482021-03-16 10:49:09 +09002351{
2352 int rc = vfs_truncate(path, 0);
2353
2354 if (rc) {
Namjae Jeonbde16942021-06-28 15:23:19 +09002355 pr_err("vfs_truncate failed, rc %d\n", rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09002356 return rc;
2357 }
2358
Hyunchul Leeef24c962021-06-30 18:25:52 +09002359 rc = smb2_remove_smb_xattrs(path);
Namjae Jeone2f34482021-03-16 10:49:09 +09002360 if (rc == -EOPNOTSUPP)
2361 rc = 0;
2362 if (rc)
2363 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09002364 "ksmbd_truncate_stream_name_xattr failed, rc %d\n",
2365 rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09002366 return rc;
2367}
2368
Al Viroc22180a2022-08-04 12:51:14 -04002369static void smb2_new_xattrs(struct ksmbd_tree_connect *tcon, const struct path *path,
Namjae Jeon070fb212021-05-26 17:57:12 +09002370 struct ksmbd_file *fp)
Namjae Jeone2f34482021-03-16 10:49:09 +09002371{
2372 struct xattr_dos_attrib da = {0};
2373 int rc;
2374
2375 if (!test_share_config_flag(tcon->share_conf,
2376 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS))
2377 return;
2378
2379 da.version = 4;
2380 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
2381 da.itime = da.create_time = fp->create_time;
2382 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
2383 XATTR_DOSINFO_ITIME;
2384
Hyunchul Leeaf349832021-06-30 18:25:53 +09002385 rc = ksmbd_vfs_set_dos_attrib_xattr(mnt_user_ns(path->mnt),
2386 path->dentry, &da);
Namjae Jeone2f34482021-03-16 10:49:09 +09002387 if (rc)
2388 ksmbd_debug(SMB, "failed to store file attribute into xattr\n");
2389}
2390
2391static void smb2_update_xattrs(struct ksmbd_tree_connect *tcon,
Al Viroc22180a2022-08-04 12:51:14 -04002392 const struct path *path, struct ksmbd_file *fp)
Namjae Jeone2f34482021-03-16 10:49:09 +09002393{
2394 struct xattr_dos_attrib da;
2395 int rc;
2396
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09002397 fp->f_ci->m_fattr &= ~(FILE_ATTRIBUTE_HIDDEN_LE | FILE_ATTRIBUTE_SYSTEM_LE);
Namjae Jeone2f34482021-03-16 10:49:09 +09002398
2399 /* get FileAttributes from XATTR_NAME_DOS_ATTRIBUTE */
2400 if (!test_share_config_flag(tcon->share_conf,
Namjae Jeon64b39f42021-03-30 14:25:35 +09002401 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS))
Namjae Jeone2f34482021-03-16 10:49:09 +09002402 return;
2403
Hyunchul Leeaf349832021-06-30 18:25:53 +09002404 rc = ksmbd_vfs_get_dos_attrib_xattr(mnt_user_ns(path->mnt),
2405 path->dentry, &da);
Namjae Jeone2f34482021-03-16 10:49:09 +09002406 if (rc > 0) {
2407 fp->f_ci->m_fattr = cpu_to_le32(da.attr);
2408 fp->create_time = da.create_time;
2409 fp->itime = da.itime;
2410 }
2411}
2412
Namjae Jeon64b39f42021-03-30 14:25:35 +09002413static int smb2_creat(struct ksmbd_work *work, struct path *path, char *name,
Namjae Jeon070fb212021-05-26 17:57:12 +09002414 int open_flags, umode_t posix_mode, bool is_dir)
Namjae Jeone2f34482021-03-16 10:49:09 +09002415{
2416 struct ksmbd_tree_connect *tcon = work->tcon;
2417 struct ksmbd_share_config *share = tcon->share_conf;
2418 umode_t mode;
2419 int rc;
2420
2421 if (!(open_flags & O_CREAT))
2422 return -EBADF;
2423
2424 ksmbd_debug(SMB, "file does not exist, so creating\n");
2425 if (is_dir == true) {
2426 ksmbd_debug(SMB, "creating directory\n");
2427
2428 mode = share_config_directory_mode(share, posix_mode);
2429 rc = ksmbd_vfs_mkdir(work, name, mode);
2430 if (rc)
2431 return rc;
2432 } else {
2433 ksmbd_debug(SMB, "creating regular file\n");
2434
2435 mode = share_config_create_mode(share, posix_mode);
2436 rc = ksmbd_vfs_create(work, name, mode);
2437 if (rc)
2438 return rc;
2439 }
2440
Hyunchul Lee265fd192021-09-25 00:06:16 +09002441 rc = ksmbd_vfs_kern_path(work, name, 0, path, 0);
Namjae Jeone2f34482021-03-16 10:49:09 +09002442 if (rc) {
Namjae Jeonbde16942021-06-28 15:23:19 +09002443 pr_err("cannot get linux path (%s), err = %d\n",
2444 name, rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09002445 return rc;
2446 }
2447 return 0;
2448}
2449
2450static int smb2_create_sd_buffer(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09002451 struct smb2_create_req *req,
Al Viroc22180a2022-08-04 12:51:14 -04002452 const struct path *path)
Namjae Jeone2f34482021-03-16 10:49:09 +09002453{
2454 struct create_context *context;
Hyunchul Lee21dd1fd2021-07-09 17:06:34 +09002455 struct create_sd_buf_req *sd_buf;
Namjae Jeone2f34482021-03-16 10:49:09 +09002456
2457 if (!req->CreateContextsOffset)
Hyunchul Lee21dd1fd2021-07-09 17:06:34 +09002458 return -ENOENT;
Namjae Jeone2f34482021-03-16 10:49:09 +09002459
2460 /* Parse SD BUFFER create contexts */
2461 context = smb2_find_context_vals(req, SMB2_CREATE_SD_BUFFER);
Hyunchul Lee21dd1fd2021-07-09 17:06:34 +09002462 if (!context)
2463 return -ENOENT;
2464 else if (IS_ERR(context))
2465 return PTR_ERR(context);
Namjae Jeone2f34482021-03-16 10:49:09 +09002466
Hyunchul Lee21dd1fd2021-07-09 17:06:34 +09002467 ksmbd_debug(SMB,
2468 "Set ACLs using SMB2_CREATE_SD_BUFFER context\n");
2469 sd_buf = (struct create_sd_buf_req *)context;
Hyunchul Lee8f771502021-09-24 22:22:22 +09002470 if (le16_to_cpu(context->DataOffset) +
2471 le32_to_cpu(context->DataLength) <
2472 sizeof(struct create_sd_buf_req))
2473 return -EINVAL;
Hyunchul Lee21dd1fd2021-07-09 17:06:34 +09002474 return set_info_sec(work->conn, work->tcon, path, &sd_buf->ntsd,
2475 le32_to_cpu(sd_buf->ccontext.DataLength), true);
Namjae Jeone2f34482021-03-16 10:49:09 +09002476}
2477
Christian Brauner43205ca2021-08-23 17:13:50 +02002478static void ksmbd_acls_fattr(struct smb_fattr *fattr,
2479 struct user_namespace *mnt_userns,
2480 struct inode *inode)
Namjae Jeon3d47e542021-04-20 14:25:35 +09002481{
Christian Brauner276a3f72022-09-09 12:51:19 +02002482 vfsuid_t vfsuid = i_uid_into_vfsuid(mnt_userns, inode);
2483 vfsgid_t vfsgid = i_gid_into_vfsgid(mnt_userns, inode);
2484
2485 fattr->cf_uid = vfsuid_into_kuid(vfsuid);
2486 fattr->cf_gid = vfsgid_into_kgid(vfsgid);
Namjae Jeon3d47e542021-04-20 14:25:35 +09002487 fattr->cf_mode = inode->i_mode;
Namjae Jeon777cad12021-08-13 08:15:33 +09002488 fattr->cf_acls = NULL;
Namjae Jeon3d47e542021-04-20 14:25:35 +09002489 fattr->cf_dacls = NULL;
2490
Namjae Jeon777cad12021-08-13 08:15:33 +09002491 if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) {
Christian Braunercac2f8b2022-09-22 17:17:00 +02002492 fattr->cf_acls = get_inode_acl(inode, ACL_TYPE_ACCESS);
Namjae Jeon777cad12021-08-13 08:15:33 +09002493 if (S_ISDIR(inode->i_mode))
Christian Braunercac2f8b2022-09-22 17:17:00 +02002494 fattr->cf_dacls = get_inode_acl(inode, ACL_TYPE_DEFAULT);
Namjae Jeon777cad12021-08-13 08:15:33 +09002495 }
Namjae Jeon3d47e542021-04-20 14:25:35 +09002496}
2497
Namjae Jeone2f34482021-03-16 10:49:09 +09002498/**
2499 * smb2_open() - handler for smb file open request
2500 * @work: smb work containing request buffer
2501 *
2502 * Return: 0 on success, otherwise error
2503 */
2504int smb2_open(struct ksmbd_work *work)
2505{
2506 struct ksmbd_conn *conn = work->conn;
2507 struct ksmbd_session *sess = work->sess;
2508 struct ksmbd_tree_connect *tcon = work->tcon;
2509 struct smb2_create_req *req;
Namjae Jeoncb451722021-11-03 08:08:44 +09002510 struct smb2_create_rsp *rsp;
Namjae Jeone2f34482021-03-16 10:49:09 +09002511 struct path path;
2512 struct ksmbd_share_config *share = tcon->share_conf;
2513 struct ksmbd_file *fp = NULL;
2514 struct file *filp = NULL;
Hyunchul Lee465d7202021-07-03 12:10:36 +09002515 struct user_namespace *user_ns = NULL;
Namjae Jeone2f34482021-03-16 10:49:09 +09002516 struct kstat stat;
2517 struct create_context *context;
2518 struct lease_ctx_info *lc = NULL;
2519 struct create_ea_buf_req *ea_buf = NULL;
2520 struct oplock_info *opinfo;
2521 __le32 *next_ptr = NULL;
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09002522 int req_op_level = 0, open_flags = 0, may_flags = 0, file_info = 0;
Hyunchul Lee265fd192021-09-25 00:06:16 +09002523 int rc = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09002524 int contxt_cnt = 0, query_disk_id = 0;
2525 int maximal_access_ctxt = 0, posix_ctxt = 0;
2526 int s_type = 0;
2527 int next_off = 0;
2528 char *name = NULL;
2529 char *stream_name = NULL;
2530 bool file_present = false, created = false, already_permitted = false;
Namjae Jeone2f34482021-03-16 10:49:09 +09002531 int share_ret, need_truncate = 0;
2532 u64 time;
2533 umode_t posix_mode = 0;
2534 __le32 daccess, maximal_access = 0;
2535
Namjae Jeone2f34482021-03-16 10:49:09 +09002536 WORK_BUFFERS(work, req, rsp);
2537
2538 if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09002539 (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002540 ksmbd_debug(SMB, "invalid flag in chained command\n");
2541 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2542 smb2_set_err_rsp(work);
2543 return -EINVAL;
2544 }
2545
2546 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
2547 ksmbd_debug(SMB, "IPC pipe create request\n");
2548 return create_smb2_pipe(work);
2549 }
2550
2551 if (req->NameLength) {
2552 if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09002553 *(char *)req->Buffer == '\\') {
Namjae Jeonbde16942021-06-28 15:23:19 +09002554 pr_err("not allow directory name included leading slash\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09002555 rc = -EINVAL;
2556 goto err_out1;
2557 }
2558
Marios Makassikis80917f12021-12-01 21:41:19 +01002559 name = smb2_get_name(req->Buffer,
Namjae Jeone2f34482021-03-16 10:49:09 +09002560 le16_to_cpu(req->NameLength),
2561 work->conn->local_nls);
2562 if (IS_ERR(name)) {
2563 rc = PTR_ERR(name);
2564 if (rc != -ENOMEM)
2565 rc = -ENOENT;
Dan Carpenter8b99f352021-08-02 08:14:03 +09002566 name = NULL;
Namjae Jeone2f34482021-03-16 10:49:09 +09002567 goto err_out1;
2568 }
2569
2570 ksmbd_debug(SMB, "converted name = %s\n", name);
2571 if (strchr(name, ':')) {
2572 if (!test_share_config_flag(work->tcon->share_conf,
Namjae Jeon64b39f42021-03-30 14:25:35 +09002573 KSMBD_SHARE_FLAG_STREAMS)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002574 rc = -EBADF;
2575 goto err_out1;
2576 }
2577 rc = parse_stream_name(name, &stream_name, &s_type);
2578 if (rc < 0)
2579 goto err_out1;
2580 }
2581
2582 rc = ksmbd_validate_filename(name);
2583 if (rc < 0)
2584 goto err_out1;
2585
2586 if (ksmbd_share_veto_filename(share, name)) {
2587 rc = -ENOENT;
2588 ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09002589 name);
Namjae Jeone2f34482021-03-16 10:49:09 +09002590 goto err_out1;
2591 }
2592 } else {
Hyunchul Lee265fd192021-09-25 00:06:16 +09002593 name = kstrdup("", GFP_KERNEL);
Namjae Jeone2f34482021-03-16 10:49:09 +09002594 if (!name) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002595 rc = -ENOMEM;
2596 goto err_out1;
2597 }
Namjae Jeone2f34482021-03-16 10:49:09 +09002598 }
2599
2600 req_op_level = req->RequestedOplockLevel;
Namjae Jeon73f9dad2021-04-16 14:12:06 +09002601 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE)
Namjae Jeone2f34482021-03-16 10:49:09 +09002602 lc = parse_lease_state(req);
Namjae Jeone2f34482021-03-16 10:49:09 +09002603
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09002604 if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09002605 pr_err("Invalid impersonationlevel : 0x%x\n",
2606 le32_to_cpu(req->ImpersonationLevel));
Namjae Jeone2f34482021-03-16 10:49:09 +09002607 rc = -EIO;
2608 rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL;
2609 goto err_out1;
2610 }
2611
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09002612 if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK_LE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09002613 pr_err("Invalid create options : 0x%x\n",
2614 le32_to_cpu(req->CreateOptions));
Namjae Jeone2f34482021-03-16 10:49:09 +09002615 rc = -EINVAL;
2616 goto err_out1;
2617 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09002618 if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09002619 req->CreateOptions & FILE_RANDOM_ACCESS_LE)
Namjae Jeone2f34482021-03-16 10:49:09 +09002620 req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE);
2621
Namjae Jeon070fb212021-05-26 17:57:12 +09002622 if (req->CreateOptions &
2623 (FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION |
2624 FILE_RESERVE_OPFILTER_LE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002625 rc = -EOPNOTSUPP;
2626 goto err_out1;
2627 }
2628
2629 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2630 if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) {
2631 rc = -EINVAL;
2632 goto err_out1;
Namjae Jeon64b39f42021-03-30 14:25:35 +09002633 } else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002634 req->CreateOptions = ~(FILE_NO_COMPRESSION_LE);
Namjae Jeon64b39f42021-03-30 14:25:35 +09002635 }
Namjae Jeone2f34482021-03-16 10:49:09 +09002636 }
2637 }
2638
2639 if (le32_to_cpu(req->CreateDisposition) >
Namjae Jeon070fb212021-05-26 17:57:12 +09002640 le32_to_cpu(FILE_OVERWRITE_IF_LE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09002641 pr_err("Invalid create disposition : 0x%x\n",
2642 le32_to_cpu(req->CreateDisposition));
Namjae Jeone2f34482021-03-16 10:49:09 +09002643 rc = -EINVAL;
2644 goto err_out1;
2645 }
2646
2647 if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09002648 pr_err("Invalid desired access : 0x%x\n",
2649 le32_to_cpu(req->DesiredAccess));
Namjae Jeone2f34482021-03-16 10:49:09 +09002650 rc = -EACCES;
2651 goto err_out1;
2652 }
2653
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09002654 if (req->FileAttributes && !(req->FileAttributes & FILE_ATTRIBUTE_MASK_LE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09002655 pr_err("Invalid file attribute : 0x%x\n",
2656 le32_to_cpu(req->FileAttributes));
Namjae Jeone2f34482021-03-16 10:49:09 +09002657 rc = -EINVAL;
2658 goto err_out1;
2659 }
2660
2661 if (req->CreateContextsOffset) {
2662 /* Parse non-durable handle create contexts */
2663 context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER);
Namjae Jeonf19b3962021-07-13 09:59:34 +09002664 if (IS_ERR(context)) {
2665 rc = PTR_ERR(context);
2666 goto err_out1;
2667 } else if (context) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002668 ea_buf = (struct create_ea_buf_req *)context;
Hyunchul Lee8f771502021-09-24 22:22:22 +09002669 if (le16_to_cpu(context->DataOffset) +
2670 le32_to_cpu(context->DataLength) <
2671 sizeof(struct create_ea_buf_req)) {
2672 rc = -EINVAL;
2673 goto err_out1;
2674 }
Namjae Jeone2f34482021-03-16 10:49:09 +09002675 if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) {
2676 rsp->hdr.Status = STATUS_ACCESS_DENIED;
2677 rc = -EACCES;
2678 goto err_out1;
2679 }
2680 }
2681
2682 context = smb2_find_context_vals(req,
Namjae Jeon070fb212021-05-26 17:57:12 +09002683 SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST);
Namjae Jeonf19b3962021-07-13 09:59:34 +09002684 if (IS_ERR(context)) {
2685 rc = PTR_ERR(context);
2686 goto err_out1;
2687 } else if (context) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002688 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09002689 "get query maximal access context\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09002690 maximal_access_ctxt = 1;
2691 }
2692
2693 context = smb2_find_context_vals(req,
Namjae Jeon070fb212021-05-26 17:57:12 +09002694 SMB2_CREATE_TIMEWARP_REQUEST);
Namjae Jeonf19b3962021-07-13 09:59:34 +09002695 if (IS_ERR(context)) {
2696 rc = PTR_ERR(context);
2697 goto err_out1;
2698 } else if (context) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002699 ksmbd_debug(SMB, "get timewarp context\n");
2700 rc = -EBADF;
2701 goto err_out1;
2702 }
2703
2704 if (tcon->posix_extensions) {
2705 context = smb2_find_context_vals(req,
Namjae Jeon070fb212021-05-26 17:57:12 +09002706 SMB2_CREATE_TAG_POSIX);
Namjae Jeonf19b3962021-07-13 09:59:34 +09002707 if (IS_ERR(context)) {
2708 rc = PTR_ERR(context);
2709 goto err_out1;
2710 } else if (context) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002711 struct create_posix *posix =
2712 (struct create_posix *)context;
Hyunchul Lee8f771502021-09-24 22:22:22 +09002713 if (le16_to_cpu(context->DataOffset) +
2714 le32_to_cpu(context->DataLength) <
Namjae Jeon9ca85812022-01-22 10:47:22 +09002715 sizeof(struct create_posix) - 4) {
Hyunchul Lee8f771502021-09-24 22:22:22 +09002716 rc = -EINVAL;
2717 goto err_out1;
2718 }
Namjae Jeone2f34482021-03-16 10:49:09 +09002719 ksmbd_debug(SMB, "get posix context\n");
2720
2721 posix_mode = le32_to_cpu(posix->Mode);
2722 posix_ctxt = 1;
2723 }
2724 }
2725 }
2726
2727 if (ksmbd_override_fsids(work)) {
2728 rc = -ENOMEM;
2729 goto err_out1;
2730 }
2731
Hyunchul Lee265fd192021-09-25 00:06:16 +09002732 rc = ksmbd_vfs_kern_path(work, name, LOOKUP_NO_SYMLINKS, &path, 1);
Namjae Jeon4ea47792021-09-21 14:19:33 +09002733 if (!rc) {
2734 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002735 /*
2736 * If file exists with under flags, return access
2737 * denied error.
2738 */
2739 if (req->CreateDisposition == FILE_OVERWRITE_IF_LE ||
Namjae Jeon64b39f42021-03-30 14:25:35 +09002740 req->CreateDisposition == FILE_OPEN_IF_LE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002741 rc = -EACCES;
2742 path_put(&path);
2743 goto err_out;
2744 }
2745
Namjae Jeon64b39f42021-03-30 14:25:35 +09002746 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002747 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09002748 "User does not have write permission\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09002749 rc = -EACCES;
2750 path_put(&path);
2751 goto err_out;
2752 }
Namjae Jeon4ea47792021-09-21 14:19:33 +09002753 } else if (d_is_symlink(path.dentry)) {
2754 rc = -EACCES;
2755 path_put(&path);
2756 goto err_out;
Namjae Jeone2f34482021-03-16 10:49:09 +09002757 }
2758 }
2759
2760 if (rc) {
Hyunchul Lee265fd192021-09-25 00:06:16 +09002761 if (rc != -ENOENT)
Namjae Jeone2f34482021-03-16 10:49:09 +09002762 goto err_out;
Namjae Jeone2f34482021-03-16 10:49:09 +09002763 ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09002764 name, rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09002765 rc = 0;
2766 } else {
2767 file_present = true;
Hyunchul Lee465d7202021-07-03 12:10:36 +09002768 user_ns = mnt_user_ns(path.mnt);
Namjae Jeone2f34482021-03-16 10:49:09 +09002769 }
2770 if (stream_name) {
2771 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2772 if (s_type == DATA_STREAM) {
2773 rc = -EIO;
2774 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2775 }
2776 } else {
Namjae Jeon823d0d32022-08-30 23:01:18 +09002777 if (file_present && S_ISDIR(d_inode(path.dentry)->i_mode) &&
2778 s_type == DATA_STREAM) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002779 rc = -EIO;
2780 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2781 }
2782 }
2783
2784 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE &&
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09002785 req->FileAttributes & FILE_ATTRIBUTE_NORMAL_LE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002786 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2787 rc = -EIO;
2788 }
2789
2790 if (rc < 0)
2791 goto err_out;
2792 }
2793
Namjae Jeon64b39f42021-03-30 14:25:35 +09002794 if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE &&
Namjae Jeon823d0d32022-08-30 23:01:18 +09002795 S_ISDIR(d_inode(path.dentry)->i_mode) &&
2796 !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002797 ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09002798 name, req->CreateOptions);
Namjae Jeone2f34482021-03-16 10:49:09 +09002799 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2800 rc = -EIO;
2801 goto err_out;
2802 }
2803
2804 if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09002805 !(req->CreateDisposition == FILE_CREATE_LE) &&
Namjae Jeon823d0d32022-08-30 23:01:18 +09002806 !S_ISDIR(d_inode(path.dentry)->i_mode)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002807 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2808 rc = -EIO;
2809 goto err_out;
2810 }
2811
2812 if (!stream_name && file_present &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09002813 req->CreateDisposition == FILE_CREATE_LE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002814 rc = -EEXIST;
2815 goto err_out;
2816 }
2817
Namjae Jeone2f34482021-03-16 10:49:09 +09002818 daccess = smb_map_generic_desired_access(req->DesiredAccess);
2819
2820 if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
Hyunchul Leeef24c962021-06-30 18:25:52 +09002821 rc = smb_check_perm_dacl(conn, &path, &daccess,
Namjae Jeon070fb212021-05-26 17:57:12 +09002822 sess->user->uid);
Namjae Jeone2f34482021-03-16 10:49:09 +09002823 if (rc)
2824 goto err_out;
2825 }
2826
2827 if (daccess & FILE_MAXIMAL_ACCESS_LE) {
2828 if (!file_present) {
2829 daccess = cpu_to_le32(GENERIC_ALL_FLAGS);
2830 } else {
Hyunchul Lee465d7202021-07-03 12:10:36 +09002831 rc = ksmbd_vfs_query_maximal_access(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09002832 path.dentry,
Namjae Jeone2f34482021-03-16 10:49:09 +09002833 &daccess);
2834 if (rc)
2835 goto err_out;
2836 already_permitted = true;
2837 }
2838 maximal_access = daccess;
2839 }
2840
Namjae Jeon070fb212021-05-26 17:57:12 +09002841 open_flags = smb2_create_open_flags(file_present, daccess,
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09002842 req->CreateDisposition,
2843 &may_flags);
Namjae Jeone2f34482021-03-16 10:49:09 +09002844
2845 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2846 if (open_flags & O_CREAT) {
2847 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09002848 "User does not have write permission\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09002849 rc = -EACCES;
2850 goto err_out;
2851 }
2852 }
2853
2854 /*create file if not present */
2855 if (!file_present) {
2856 rc = smb2_creat(work, &path, name, open_flags, posix_mode,
Namjae Jeon070fb212021-05-26 17:57:12 +09002857 req->CreateOptions & FILE_DIRECTORY_FILE_LE);
Marios Makassikisd337a442021-07-27 09:24:51 +09002858 if (rc) {
2859 if (rc == -ENOENT) {
2860 rc = -EIO;
2861 rsp->hdr.Status = STATUS_OBJECT_PATH_NOT_FOUND;
2862 }
Namjae Jeone2f34482021-03-16 10:49:09 +09002863 goto err_out;
Marios Makassikisd337a442021-07-27 09:24:51 +09002864 }
Namjae Jeone2f34482021-03-16 10:49:09 +09002865
2866 created = true;
Hyunchul Lee465d7202021-07-03 12:10:36 +09002867 user_ns = mnt_user_ns(path.mnt);
Namjae Jeone2f34482021-03-16 10:49:09 +09002868 if (ea_buf) {
Namjae Jeon9496e262021-09-29 15:41:48 +09002869 if (le32_to_cpu(ea_buf->ccontext.DataLength) <
2870 sizeof(struct smb2_ea_info)) {
2871 rc = -EINVAL;
2872 goto err_out;
2873 }
2874
2875 rc = smb2_set_ea(&ea_buf->ea,
2876 le32_to_cpu(ea_buf->ccontext.DataLength),
2877 &path);
Namjae Jeone2f34482021-03-16 10:49:09 +09002878 if (rc == -EOPNOTSUPP)
2879 rc = 0;
2880 else if (rc)
2881 goto err_out;
2882 }
2883 } else if (!already_permitted) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002884 /* FILE_READ_ATTRIBUTE is allowed without inode_permission,
2885 * because execute(search) permission on a parent directory,
2886 * is already granted.
2887 */
Namjae Jeon64b39f42021-03-30 14:25:35 +09002888 if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) {
Hyunchul Lee465d7202021-07-03 12:10:36 +09002889 rc = inode_permission(user_ns,
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09002890 d_inode(path.dentry),
2891 may_flags);
Namjae Jeonff1d5722021-04-13 13:18:10 +09002892 if (rc)
Namjae Jeone2f34482021-03-16 10:49:09 +09002893 goto err_out;
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09002894
2895 if ((daccess & FILE_DELETE_LE) ||
2896 (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
Hyunchul Lee465d7202021-07-03 12:10:36 +09002897 rc = ksmbd_vfs_may_delete(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09002898 path.dentry);
Hyunchul Lee6c5e36d2021-06-23 13:48:24 +09002899 if (rc)
2900 goto err_out;
2901 }
Namjae Jeone2f34482021-03-16 10:49:09 +09002902 }
2903 }
2904
2905 rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent));
2906 if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) {
2907 rc = -EBUSY;
2908 goto err_out;
2909 }
2910
2911 rc = 0;
2912 filp = dentry_open(&path, open_flags, current_cred());
2913 if (IS_ERR(filp)) {
2914 rc = PTR_ERR(filp);
Namjae Jeonbde16942021-06-28 15:23:19 +09002915 pr_err("dentry open for dir failed, rc %d\n", rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09002916 goto err_out;
2917 }
2918
2919 if (file_present) {
2920 if (!(open_flags & O_TRUNC))
2921 file_info = FILE_OPENED;
2922 else
2923 file_info = FILE_OVERWRITTEN;
2924
Namjae Jeon070fb212021-05-26 17:57:12 +09002925 if ((req->CreateDisposition & FILE_CREATE_MASK_LE) ==
2926 FILE_SUPERSEDE_LE)
Namjae Jeone2f34482021-03-16 10:49:09 +09002927 file_info = FILE_SUPERSEDED;
Namjae Jeon64b39f42021-03-30 14:25:35 +09002928 } else if (open_flags & O_CREAT) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002929 file_info = FILE_CREATED;
Namjae Jeon64b39f42021-03-30 14:25:35 +09002930 }
Namjae Jeone2f34482021-03-16 10:49:09 +09002931
2932 ksmbd_vfs_set_fadvise(filp, req->CreateOptions);
2933
2934 /* Obtain Volatile-ID */
2935 fp = ksmbd_open_fd(work, filp);
2936 if (IS_ERR(fp)) {
2937 fput(filp);
2938 rc = PTR_ERR(fp);
2939 fp = NULL;
2940 goto err_out;
2941 }
2942
2943 /* Get Persistent-ID */
2944 ksmbd_open_durable_fd(fp);
Namjae Jeon38673692021-07-08 12:32:27 +09002945 if (!has_file_id(fp->persistent_id)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002946 rc = -ENOMEM;
2947 goto err_out;
2948 }
2949
Namjae Jeone2f34482021-03-16 10:49:09 +09002950 fp->cdoption = req->CreateDisposition;
2951 fp->daccess = daccess;
2952 fp->saccess = req->ShareAccess;
2953 fp->coption = req->CreateOptions;
2954
2955 /* Set default windows and posix acls if creating new file */
2956 if (created) {
2957 int posix_acl_rc;
Namjae Jeonfba08fa2021-04-15 10:29:39 +09002958 struct inode *inode = d_inode(path.dentry);
Namjae Jeone2f34482021-03-16 10:49:09 +09002959
Hyunchul Lee465d7202021-07-03 12:10:36 +09002960 posix_acl_rc = ksmbd_vfs_inherit_posix_acl(user_ns,
Christian Brauner138060b2022-09-23 10:29:39 +02002961 path.dentry,
Hyunchul Leeaf349832021-06-30 18:25:53 +09002962 d_inode(path.dentry->d_parent));
Namjae Jeone2f34482021-03-16 10:49:09 +09002963 if (posix_acl_rc)
2964 ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc);
2965
2966 if (test_share_config_flag(work->tcon->share_conf,
Namjae Jeon64b39f42021-03-30 14:25:35 +09002967 KSMBD_SHARE_FLAG_ACL_XATTR)) {
Hyunchul Leeef24c962021-06-30 18:25:52 +09002968 rc = smb_inherit_dacl(conn, &path, sess->user->uid,
Namjae Jeon070fb212021-05-26 17:57:12 +09002969 sess->user->gid);
Namjae Jeone2f34482021-03-16 10:49:09 +09002970 }
2971
2972 if (rc) {
Hyunchul Leeef24c962021-06-30 18:25:52 +09002973 rc = smb2_create_sd_buffer(work, req, &path);
Namjae Jeone2f34482021-03-16 10:49:09 +09002974 if (rc) {
2975 if (posix_acl_rc)
Hyunchul Lee465d7202021-07-03 12:10:36 +09002976 ksmbd_vfs_set_init_posix_acl(user_ns,
Christian Brauner138060b2022-09-23 10:29:39 +02002977 path.dentry);
Namjae Jeone2f34482021-03-16 10:49:09 +09002978
2979 if (test_share_config_flag(work->tcon->share_conf,
Namjae Jeon64b39f42021-03-30 14:25:35 +09002980 KSMBD_SHARE_FLAG_ACL_XATTR)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09002981 struct smb_fattr fattr;
2982 struct smb_ntsd *pntsd;
Namjae Jeon3d47e542021-04-20 14:25:35 +09002983 int pntsd_size, ace_num = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09002984
Christian Brauner43205ca2021-08-23 17:13:50 +02002985 ksmbd_acls_fattr(&fattr, user_ns, inode);
Marios Makassikise6b10592021-04-15 10:24:56 +09002986 if (fattr.cf_acls)
2987 ace_num = fattr.cf_acls->a_count;
Namjae Jeon3d47e542021-04-20 14:25:35 +09002988 if (fattr.cf_dacls)
2989 ace_num += fattr.cf_dacls->a_count;
Namjae Jeone2f34482021-03-16 10:49:09 +09002990
2991 pntsd = kmalloc(sizeof(struct smb_ntsd) +
Namjae Jeon64b39f42021-03-30 14:25:35 +09002992 sizeof(struct smb_sid) * 3 +
Namjae Jeone2f34482021-03-16 10:49:09 +09002993 sizeof(struct smb_acl) +
Namjae Jeon64b39f42021-03-30 14:25:35 +09002994 sizeof(struct smb_ace) * ace_num * 2,
Namjae Jeone2f34482021-03-16 10:49:09 +09002995 GFP_KERNEL);
2996 if (!pntsd)
2997 goto err_out;
2998
Hyunchul Lee465d7202021-07-03 12:10:36 +09002999 rc = build_sec_desc(user_ns,
Namjae Jeon8f054112022-08-02 07:28:51 +09003000 pntsd, NULL, 0,
Namjae Jeon070fb212021-05-26 17:57:12 +09003001 OWNER_SECINFO |
Hyunchul Leeaf349832021-06-30 18:25:53 +09003002 GROUP_SECINFO |
3003 DACL_SECINFO,
Namjae Jeon070fb212021-05-26 17:57:12 +09003004 &pntsd_size, &fattr);
Namjae Jeone2f34482021-03-16 10:49:09 +09003005 posix_acl_release(fattr.cf_acls);
3006 posix_acl_release(fattr.cf_dacls);
Namjae Jeonf2e78af2021-12-01 10:12:39 +09003007 if (rc) {
3008 kfree(pntsd);
3009 goto err_out;
3010 }
Namjae Jeone2f34482021-03-16 10:49:09 +09003011
3012 rc = ksmbd_vfs_set_sd_xattr(conn,
Hyunchul Lee465d7202021-07-03 12:10:36 +09003013 user_ns,
Namjae Jeon070fb212021-05-26 17:57:12 +09003014 path.dentry,
3015 pntsd,
3016 pntsd_size);
Namjae Jeon3d47e542021-04-20 14:25:35 +09003017 kfree(pntsd);
Namjae Jeone2f34482021-03-16 10:49:09 +09003018 if (rc)
Namjae Jeonbde16942021-06-28 15:23:19 +09003019 pr_err("failed to store ntacl in xattr : %d\n",
3020 rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09003021 }
3022 }
3023 }
3024 rc = 0;
3025 }
3026
3027 if (stream_name) {
3028 rc = smb2_set_stream_name_xattr(&path,
3029 fp,
3030 stream_name,
3031 s_type);
3032 if (rc)
3033 goto err_out;
3034 file_info = FILE_CREATED;
3035 }
3036
3037 fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE |
3038 FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE));
Namjae Jeon64b39f42021-03-30 14:25:35 +09003039 if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC &&
3040 !fp->attrib_only && !stream_name) {
Namjae Jeone2f34482021-03-16 10:49:09 +09003041 smb_break_all_oplock(work, fp);
3042 need_truncate = 1;
3043 }
3044
3045 /* fp should be searchable through ksmbd_inode.m_fp_list
3046 * after daccess, saccess, attrib_only, and stream are
3047 * initialized.
3048 */
3049 write_lock(&fp->f_ci->m_lock);
3050 list_add(&fp->node, &fp->f_ci->m_fp_list);
3051 write_unlock(&fp->f_ci->m_lock);
3052
Namjae Jeone2f34482021-03-16 10:49:09 +09003053 /* Check delete pending among previous fp before oplock break */
3054 if (ksmbd_inode_pending_delete(fp)) {
3055 rc = -EBUSY;
3056 goto err_out;
3057 }
3058
3059 share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp);
Namjae Jeon64b39f42021-03-30 14:25:35 +09003060 if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) ||
3061 (req_op_level == SMB2_OPLOCK_LEVEL_LEASE &&
3062 !(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) {
Namjae Jeonab0b2632021-06-29 09:20:13 +09003063 if (share_ret < 0 && !S_ISDIR(file_inode(fp->filp)->i_mode)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09003064 rc = share_ret;
3065 goto err_out;
3066 }
3067 } else {
3068 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) {
3069 req_op_level = smb2_map_lease_to_oplock(lc->req_state);
3070 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09003071 "lease req for(%s) req oplock state 0x%x, lease state 0x%x\n",
3072 name, req_op_level, lc->req_state);
Namjae Jeone2f34482021-03-16 10:49:09 +09003073 rc = find_same_lease_key(sess, fp->f_ci, lc);
3074 if (rc)
3075 goto err_out;
3076 } else if (open_flags == O_RDONLY &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09003077 (req_op_level == SMB2_OPLOCK_LEVEL_BATCH ||
3078 req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE))
Namjae Jeone2f34482021-03-16 10:49:09 +09003079 req_op_level = SMB2_OPLOCK_LEVEL_II;
3080
3081 rc = smb_grant_oplock(work, req_op_level,
3082 fp->persistent_id, fp,
3083 le32_to_cpu(req->hdr.Id.SyncId.TreeId),
3084 lc, share_ret);
3085 if (rc < 0)
3086 goto err_out;
3087 }
3088
3089 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)
3090 ksmbd_fd_set_delete_on_close(fp, file_info);
3091
3092 if (need_truncate) {
3093 rc = smb2_create_truncate(&path);
3094 if (rc)
3095 goto err_out;
3096 }
3097
3098 if (req->CreateContextsOffset) {
3099 struct create_alloc_size_req *az_req;
3100
Namjae Jeon070fb212021-05-26 17:57:12 +09003101 az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req,
3102 SMB2_CREATE_ALLOCATION_SIZE);
Namjae Jeonf19b3962021-07-13 09:59:34 +09003103 if (IS_ERR(az_req)) {
3104 rc = PTR_ERR(az_req);
3105 goto err_out;
3106 } else if (az_req) {
Hyunchul Lee8f771502021-09-24 22:22:22 +09003107 loff_t alloc_size;
Namjae Jeone2f34482021-03-16 10:49:09 +09003108 int err;
3109
Hyunchul Lee8f771502021-09-24 22:22:22 +09003110 if (le16_to_cpu(az_req->ccontext.DataOffset) +
3111 le32_to_cpu(az_req->ccontext.DataLength) <
3112 sizeof(struct create_alloc_size_req)) {
3113 rc = -EINVAL;
3114 goto err_out;
3115 }
3116 alloc_size = le64_to_cpu(az_req->AllocationSize);
Namjae Jeone2f34482021-03-16 10:49:09 +09003117 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09003118 "request smb2 create allocate size : %llu\n",
3119 alloc_size);
Namjae Jeone8c06192021-06-22 11:06:11 +09003120 smb_break_all_levII_oplock(work, fp, 1);
3121 err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
3122 alloc_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09003123 if (err < 0)
3124 ksmbd_debug(SMB,
Namjae Jeone8c06192021-06-22 11:06:11 +09003125 "vfs_fallocate is failed : %d\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09003126 err);
Namjae Jeone2f34482021-03-16 10:49:09 +09003127 }
3128
Namjae Jeon64b39f42021-03-30 14:25:35 +09003129 context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID);
Namjae Jeonf19b3962021-07-13 09:59:34 +09003130 if (IS_ERR(context)) {
3131 rc = PTR_ERR(context);
3132 goto err_out;
3133 } else if (context) {
Namjae Jeone2f34482021-03-16 10:49:09 +09003134 ksmbd_debug(SMB, "get query on disk id context\n");
3135 query_disk_id = 1;
3136 }
3137 }
3138
Hyunchul Leec90b31e2022-08-12 11:11:32 +09003139 rc = ksmbd_vfs_getattr(&path, &stat);
3140 if (rc)
3141 goto err_out;
3142
Namjae Jeone2f34482021-03-16 10:49:09 +09003143 if (stat.result_mask & STATX_BTIME)
3144 fp->create_time = ksmbd_UnixTimeToNT(stat.btime);
3145 else
3146 fp->create_time = ksmbd_UnixTimeToNT(stat.ctime);
3147 if (req->FileAttributes || fp->f_ci->m_fattr == 0)
Namjae Jeon070fb212021-05-26 17:57:12 +09003148 fp->f_ci->m_fattr =
3149 cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes)));
Namjae Jeone2f34482021-03-16 10:49:09 +09003150
3151 if (!created)
3152 smb2_update_xattrs(tcon, &path, fp);
3153 else
3154 smb2_new_xattrs(tcon, &path, fp);
3155
3156 memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE);
3157
Namjae Jeone2f34482021-03-16 10:49:09 +09003158 rsp->StructureSize = cpu_to_le16(89);
3159 rcu_read_lock();
3160 opinfo = rcu_dereference(fp->f_opinfo);
3161 rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0;
3162 rcu_read_unlock();
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003163 rsp->Flags = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09003164 rsp->CreateAction = cpu_to_le32(file_info);
3165 rsp->CreationTime = cpu_to_le64(fp->create_time);
3166 time = ksmbd_UnixTimeToNT(stat.atime);
3167 rsp->LastAccessTime = cpu_to_le64(time);
3168 time = ksmbd_UnixTimeToNT(stat.mtime);
3169 rsp->LastWriteTime = cpu_to_le64(time);
3170 time = ksmbd_UnixTimeToNT(stat.ctime);
3171 rsp->ChangeTime = cpu_to_le64(time);
3172 rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 :
3173 cpu_to_le64(stat.blocks << 9);
3174 rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
3175 rsp->FileAttributes = fp->f_ci->m_fattr;
3176
3177 rsp->Reserved2 = 0;
3178
Paulo Alcantara2d004c62022-03-21 13:08:26 -03003179 rsp->PersistentFileId = fp->persistent_id;
3180 rsp->VolatileFileId = fp->volatile_id;
Namjae Jeone2f34482021-03-16 10:49:09 +09003181
3182 rsp->CreateContextsOffset = 0;
3183 rsp->CreateContextsLength = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09003184 inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/
Namjae Jeone2f34482021-03-16 10:49:09 +09003185
3186 /* If lease is request send lease context response */
3187 if (opinfo && opinfo->is_lease) {
3188 struct create_context *lease_ccontext;
3189
3190 ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09003191 name, opinfo->o_lease->state);
Namjae Jeone2f34482021-03-16 10:49:09 +09003192 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
3193
3194 lease_ccontext = (struct create_context *)rsp->Buffer;
3195 contxt_cnt++;
3196 create_lease_buf(rsp->Buffer, opinfo->o_lease);
3197 le32_add_cpu(&rsp->CreateContextsLength,
3198 conn->vals->create_lease_size);
Namjae Jeoncb451722021-11-03 08:08:44 +09003199 inc_rfc1001_len(work->response_buf,
3200 conn->vals->create_lease_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09003201 next_ptr = &lease_ccontext->Next;
3202 next_off = conn->vals->create_lease_size;
3203 }
3204
Namjae Jeone2f34482021-03-16 10:49:09 +09003205 if (maximal_access_ctxt) {
3206 struct create_context *mxac_ccontext;
3207
3208 if (maximal_access == 0)
Hyunchul Lee465d7202021-07-03 12:10:36 +09003209 ksmbd_vfs_query_maximal_access(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09003210 path.dentry,
Namjae Jeone2f34482021-03-16 10:49:09 +09003211 &maximal_access);
3212 mxac_ccontext = (struct create_context *)(rsp->Buffer +
3213 le32_to_cpu(rsp->CreateContextsLength));
3214 contxt_cnt++;
3215 create_mxac_rsp_buf(rsp->Buffer +
3216 le32_to_cpu(rsp->CreateContextsLength),
3217 le32_to_cpu(maximal_access));
3218 le32_add_cpu(&rsp->CreateContextsLength,
3219 conn->vals->create_mxac_size);
Namjae Jeoncb451722021-11-03 08:08:44 +09003220 inc_rfc1001_len(work->response_buf,
3221 conn->vals->create_mxac_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09003222 if (next_ptr)
3223 *next_ptr = cpu_to_le32(next_off);
3224 next_ptr = &mxac_ccontext->Next;
3225 next_off = conn->vals->create_mxac_size;
3226 }
3227
3228 if (query_disk_id) {
3229 struct create_context *disk_id_ccontext;
3230
3231 disk_id_ccontext = (struct create_context *)(rsp->Buffer +
3232 le32_to_cpu(rsp->CreateContextsLength));
3233 contxt_cnt++;
3234 create_disk_id_rsp_buf(rsp->Buffer +
3235 le32_to_cpu(rsp->CreateContextsLength),
3236 stat.ino, tcon->id);
3237 le32_add_cpu(&rsp->CreateContextsLength,
3238 conn->vals->create_disk_id_size);
Namjae Jeoncb451722021-11-03 08:08:44 +09003239 inc_rfc1001_len(work->response_buf,
3240 conn->vals->create_disk_id_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09003241 if (next_ptr)
3242 *next_ptr = cpu_to_le32(next_off);
3243 next_ptr = &disk_id_ccontext->Next;
3244 next_off = conn->vals->create_disk_id_size;
3245 }
3246
3247 if (posix_ctxt) {
Namjae Jeone2f34482021-03-16 10:49:09 +09003248 contxt_cnt++;
3249 create_posix_rsp_buf(rsp->Buffer +
3250 le32_to_cpu(rsp->CreateContextsLength),
3251 fp);
3252 le32_add_cpu(&rsp->CreateContextsLength,
3253 conn->vals->create_posix_size);
Namjae Jeoncb451722021-11-03 08:08:44 +09003254 inc_rfc1001_len(work->response_buf,
3255 conn->vals->create_posix_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09003256 if (next_ptr)
3257 *next_ptr = cpu_to_le32(next_off);
3258 }
3259
3260 if (contxt_cnt > 0) {
3261 rsp->CreateContextsOffset =
Namjae Jeoncb451722021-11-03 08:08:44 +09003262 cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer));
Namjae Jeone2f34482021-03-16 10:49:09 +09003263 }
3264
3265err_out:
3266 if (file_present || created)
3267 path_put(&path);
3268 ksmbd_revert_fsids(work);
3269err_out1:
3270 if (rc) {
3271 if (rc == -EINVAL)
3272 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
3273 else if (rc == -EOPNOTSUPP)
3274 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
Hyunchul Lee265fd192021-09-25 00:06:16 +09003275 else if (rc == -EACCES || rc == -ESTALE || rc == -EXDEV)
Namjae Jeone2f34482021-03-16 10:49:09 +09003276 rsp->hdr.Status = STATUS_ACCESS_DENIED;
3277 else if (rc == -ENOENT)
3278 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
3279 else if (rc == -EPERM)
3280 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
3281 else if (rc == -EBUSY)
3282 rsp->hdr.Status = STATUS_DELETE_PENDING;
3283 else if (rc == -EBADF)
3284 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
3285 else if (rc == -ENOEXEC)
3286 rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID;
3287 else if (rc == -ENXIO)
3288 rsp->hdr.Status = STATUS_NO_SUCH_DEVICE;
3289 else if (rc == -EEXIST)
3290 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
3291 else if (rc == -EMFILE)
3292 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
3293 if (!rsp->hdr.Status)
3294 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
3295
Namjae Jeone2f34482021-03-16 10:49:09 +09003296 if (fp)
3297 ksmbd_fd_put(work, fp);
3298 smb2_set_err_rsp(work);
3299 ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status);
3300 }
3301
Namjae Jeon50f500b2022-02-24 11:03:41 +09003302 kfree(name);
Namjae Jeone2f34482021-03-16 10:49:09 +09003303 kfree(lc);
3304
3305 return 0;
3306}
3307
3308static int readdir_info_level_struct_sz(int info_level)
3309{
3310 switch (info_level) {
3311 case FILE_FULL_DIRECTORY_INFORMATION:
3312 return sizeof(struct file_full_directory_info);
3313 case FILE_BOTH_DIRECTORY_INFORMATION:
3314 return sizeof(struct file_both_directory_info);
3315 case FILE_DIRECTORY_INFORMATION:
3316 return sizeof(struct file_directory_info);
3317 case FILE_NAMES_INFORMATION:
3318 return sizeof(struct file_names_info);
3319 case FILEID_FULL_DIRECTORY_INFORMATION:
3320 return sizeof(struct file_id_full_dir_info);
3321 case FILEID_BOTH_DIRECTORY_INFORMATION:
3322 return sizeof(struct file_id_both_directory_info);
3323 case SMB_FIND_FILE_POSIX_INFO:
3324 return sizeof(struct smb2_posix_info);
3325 default:
3326 return -EOPNOTSUPP;
3327 }
3328}
3329
3330static int dentry_name(struct ksmbd_dir_info *d_info, int info_level)
3331{
3332 switch (info_level) {
3333 case FILE_FULL_DIRECTORY_INFORMATION:
3334 {
3335 struct file_full_directory_info *ffdinfo;
3336
3337 ffdinfo = (struct file_full_directory_info *)d_info->rptr;
3338 d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset);
3339 d_info->name = ffdinfo->FileName;
3340 d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength);
3341 return 0;
3342 }
3343 case FILE_BOTH_DIRECTORY_INFORMATION:
3344 {
3345 struct file_both_directory_info *fbdinfo;
3346
3347 fbdinfo = (struct file_both_directory_info *)d_info->rptr;
3348 d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset);
3349 d_info->name = fbdinfo->FileName;
3350 d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength);
3351 return 0;
3352 }
3353 case FILE_DIRECTORY_INFORMATION:
3354 {
3355 struct file_directory_info *fdinfo;
3356
3357 fdinfo = (struct file_directory_info *)d_info->rptr;
3358 d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset);
3359 d_info->name = fdinfo->FileName;
3360 d_info->name_len = le32_to_cpu(fdinfo->FileNameLength);
3361 return 0;
3362 }
3363 case FILE_NAMES_INFORMATION:
3364 {
3365 struct file_names_info *fninfo;
3366
3367 fninfo = (struct file_names_info *)d_info->rptr;
3368 d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset);
3369 d_info->name = fninfo->FileName;
3370 d_info->name_len = le32_to_cpu(fninfo->FileNameLength);
3371 return 0;
3372 }
3373 case FILEID_FULL_DIRECTORY_INFORMATION:
3374 {
3375 struct file_id_full_dir_info *dinfo;
3376
3377 dinfo = (struct file_id_full_dir_info *)d_info->rptr;
3378 d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset);
3379 d_info->name = dinfo->FileName;
3380 d_info->name_len = le32_to_cpu(dinfo->FileNameLength);
3381 return 0;
3382 }
3383 case FILEID_BOTH_DIRECTORY_INFORMATION:
3384 {
3385 struct file_id_both_directory_info *fibdinfo;
3386
3387 fibdinfo = (struct file_id_both_directory_info *)d_info->rptr;
3388 d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset);
3389 d_info->name = fibdinfo->FileName;
3390 d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength);
3391 return 0;
3392 }
3393 case SMB_FIND_FILE_POSIX_INFO:
3394 {
3395 struct smb2_posix_info *posix_info;
3396
3397 posix_info = (struct smb2_posix_info *)d_info->rptr;
3398 d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset);
3399 d_info->name = posix_info->name;
3400 d_info->name_len = le32_to_cpu(posix_info->name_len);
3401 return 0;
3402 }
3403 default:
3404 return -EINVAL;
3405 }
3406}
3407
3408/**
3409 * smb2_populate_readdir_entry() - encode directory entry in smb2 response
3410 * buffer
3411 * @conn: connection instance
3412 * @info_level: smb information level
3413 * @d_info: structure included variables for query dir
3414 * @ksmbd_kstat: ksmbd wrapper of dirent stat information
3415 *
3416 * if directory has many entries, find first can't read it fully.
3417 * find next might be called multiple times to read remaining dir entries
3418 *
3419 * Return: 0 on success, otherwise error
3420 */
Namjae Jeon64b39f42021-03-30 14:25:35 +09003421static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level,
Namjae Jeon070fb212021-05-26 17:57:12 +09003422 struct ksmbd_dir_info *d_info,
3423 struct ksmbd_kstat *ksmbd_kstat)
Namjae Jeone2f34482021-03-16 10:49:09 +09003424{
3425 int next_entry_offset = 0;
3426 char *conv_name;
3427 int conv_len;
3428 void *kstat;
Namjae Jeondac0ec62021-07-07 14:57:24 +09003429 int struct_sz, rc = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09003430
3431 conv_name = ksmbd_convert_dir_info_name(d_info,
3432 conn->local_nls,
3433 &conv_len);
3434 if (!conv_name)
3435 return -ENOMEM;
3436
3437 /* Somehow the name has only terminating NULL bytes */
3438 if (conv_len < 0) {
Namjae Jeondac0ec62021-07-07 14:57:24 +09003439 rc = -EINVAL;
3440 goto free_conv_name;
Namjae Jeone2f34482021-03-16 10:49:09 +09003441 }
3442
Gustavo A. R. Silvad272e012022-11-15 09:35:10 -06003443 struct_sz = readdir_info_level_struct_sz(info_level) + conv_len;
Namjae Jeon04e26092022-01-30 18:31:01 +09003444 next_entry_offset = ALIGN(struct_sz, KSMBD_DIR_INFO_ALIGNMENT);
3445 d_info->last_entry_off_align = next_entry_offset - struct_sz;
Namjae Jeone2f34482021-03-16 10:49:09 +09003446
3447 if (next_entry_offset > d_info->out_buf_len) {
3448 d_info->out_buf_len = 0;
Namjae Jeondac0ec62021-07-07 14:57:24 +09003449 rc = -ENOSPC;
3450 goto free_conv_name;
Namjae Jeone2f34482021-03-16 10:49:09 +09003451 }
3452
3453 kstat = d_info->wptr;
3454 if (info_level != FILE_NAMES_INFORMATION)
3455 kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat);
3456
3457 switch (info_level) {
3458 case FILE_FULL_DIRECTORY_INFORMATION:
3459 {
3460 struct file_full_directory_info *ffdinfo;
3461
3462 ffdinfo = (struct file_full_directory_info *)kstat;
3463 ffdinfo->FileNameLength = cpu_to_le32(conv_len);
3464 ffdinfo->EaSize =
3465 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3466 if (ffdinfo->EaSize)
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003467 ffdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09003468 if (d_info->hide_dot_file && d_info->name[0] == '.')
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003469 ffdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09003470 memcpy(ffdinfo->FileName, conv_name, conv_len);
3471 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3472 break;
3473 }
3474 case FILE_BOTH_DIRECTORY_INFORMATION:
3475 {
3476 struct file_both_directory_info *fbdinfo;
3477
3478 fbdinfo = (struct file_both_directory_info *)kstat;
3479 fbdinfo->FileNameLength = cpu_to_le32(conv_len);
3480 fbdinfo->EaSize =
3481 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3482 if (fbdinfo->EaSize)
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003483 fbdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09003484 fbdinfo->ShortNameLength = 0;
3485 fbdinfo->Reserved = 0;
3486 if (d_info->hide_dot_file && d_info->name[0] == '.')
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003487 fbdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09003488 memcpy(fbdinfo->FileName, conv_name, conv_len);
3489 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3490 break;
3491 }
3492 case FILE_DIRECTORY_INFORMATION:
3493 {
3494 struct file_directory_info *fdinfo;
3495
3496 fdinfo = (struct file_directory_info *)kstat;
3497 fdinfo->FileNameLength = cpu_to_le32(conv_len);
3498 if (d_info->hide_dot_file && d_info->name[0] == '.')
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003499 fdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09003500 memcpy(fdinfo->FileName, conv_name, conv_len);
3501 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3502 break;
3503 }
3504 case FILE_NAMES_INFORMATION:
3505 {
3506 struct file_names_info *fninfo;
3507
3508 fninfo = (struct file_names_info *)kstat;
3509 fninfo->FileNameLength = cpu_to_le32(conv_len);
3510 memcpy(fninfo->FileName, conv_name, conv_len);
3511 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3512 break;
3513 }
3514 case FILEID_FULL_DIRECTORY_INFORMATION:
3515 {
3516 struct file_id_full_dir_info *dinfo;
3517
3518 dinfo = (struct file_id_full_dir_info *)kstat;
3519 dinfo->FileNameLength = cpu_to_le32(conv_len);
3520 dinfo->EaSize =
3521 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3522 if (dinfo->EaSize)
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003523 dinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09003524 dinfo->Reserved = 0;
3525 dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3526 if (d_info->hide_dot_file && d_info->name[0] == '.')
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003527 dinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09003528 memcpy(dinfo->FileName, conv_name, conv_len);
3529 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3530 break;
3531 }
3532 case FILEID_BOTH_DIRECTORY_INFORMATION:
3533 {
3534 struct file_id_both_directory_info *fibdinfo;
3535
3536 fibdinfo = (struct file_id_both_directory_info *)kstat;
3537 fibdinfo->FileNameLength = cpu_to_le32(conv_len);
3538 fibdinfo->EaSize =
3539 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3540 if (fibdinfo->EaSize)
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003541 fibdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09003542 fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3543 fibdinfo->ShortNameLength = 0;
3544 fibdinfo->Reserved = 0;
3545 fibdinfo->Reserved2 = cpu_to_le16(0);
3546 if (d_info->hide_dot_file && d_info->name[0] == '.')
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003547 fibdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09003548 memcpy(fibdinfo->FileName, conv_name, conv_len);
3549 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3550 break;
3551 }
3552 case SMB_FIND_FILE_POSIX_INFO:
3553 {
3554 struct smb2_posix_info *posix_info;
3555 u64 time;
3556
3557 posix_info = (struct smb2_posix_info *)kstat;
3558 posix_info->Ignored = 0;
3559 posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time);
3560 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime);
3561 posix_info->ChangeTime = cpu_to_le64(time);
3562 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime);
3563 posix_info->LastAccessTime = cpu_to_le64(time);
3564 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime);
3565 posix_info->LastWriteTime = cpu_to_le64(time);
3566 posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size);
3567 posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9);
3568 posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev);
3569 posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink);
Namjae Jeonf6c2b202022-09-22 23:16:12 +09003570 posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode & 0777);
Namjae Jeone2f34482021-03-16 10:49:09 +09003571 posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino);
3572 posix_info->DosAttributes =
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003573 S_ISDIR(ksmbd_kstat->kstat->mode) ?
3574 FILE_ATTRIBUTE_DIRECTORY_LE : FILE_ATTRIBUTE_ARCHIVE_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09003575 if (d_info->hide_dot_file && d_info->name[0] == '.')
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09003576 posix_info->DosAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
Namjae Jeon5609bdd2022-09-22 23:08:49 +09003577 /*
3578 * SidBuffer(32) contain two sids(Domain sid(16), UNIX group sid(16)).
3579 * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) +
3580 * sub_auth(4 * 1(num_subauth)) + RID(4).
3581 */
Christian Brauner475d6f92021-08-23 17:13:48 +02003582 id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid),
Namjae Jeon5609bdd2022-09-22 23:08:49 +09003583 SIDUNIX_USER, (struct smb_sid *)&posix_info->SidBuffer[0]);
Christian Brauner475d6f92021-08-23 17:13:48 +02003584 id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid),
Namjae Jeon5609bdd2022-09-22 23:08:49 +09003585 SIDUNIX_GROUP, (struct smb_sid *)&posix_info->SidBuffer[16]);
Namjae Jeone2f34482021-03-16 10:49:09 +09003586 memcpy(posix_info->name, conv_name, conv_len);
3587 posix_info->name_len = cpu_to_le32(conv_len);
3588 posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset);
3589 break;
3590 }
3591
3592 } /* switch (info_level) */
3593
3594 d_info->last_entry_offset = d_info->data_count;
3595 d_info->data_count += next_entry_offset;
Marios Makassikise7735c82021-05-06 11:40:02 +09003596 d_info->out_buf_len -= next_entry_offset;
Namjae Jeone2f34482021-03-16 10:49:09 +09003597 d_info->wptr += next_entry_offset;
Namjae Jeone2f34482021-03-16 10:49:09 +09003598
3599 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09003600 "info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n",
3601 info_level, d_info->out_buf_len,
3602 next_entry_offset, d_info->data_count);
Namjae Jeone2f34482021-03-16 10:49:09 +09003603
Namjae Jeondac0ec62021-07-07 14:57:24 +09003604free_conv_name:
3605 kfree(conv_name);
3606 return rc;
Namjae Jeone2f34482021-03-16 10:49:09 +09003607}
3608
3609struct smb2_query_dir_private {
3610 struct ksmbd_work *work;
3611 char *search_pattern;
3612 struct ksmbd_file *dir_fp;
3613
3614 struct ksmbd_dir_info *d_info;
3615 int info_level;
3616};
3617
3618static void lock_dir(struct ksmbd_file *dir_fp)
3619{
3620 struct dentry *dir = dir_fp->filp->f_path.dentry;
3621
3622 inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
3623}
3624
3625static void unlock_dir(struct ksmbd_file *dir_fp)
3626{
3627 struct dentry *dir = dir_fp->filp->f_path.dentry;
3628
3629 inode_unlock(d_inode(dir));
3630}
3631
3632static int process_query_dir_entries(struct smb2_query_dir_private *priv)
3633{
Hyunchul Lee465d7202021-07-03 12:10:36 +09003634 struct user_namespace *user_ns = file_mnt_user_ns(priv->dir_fp->filp);
Namjae Jeone2f34482021-03-16 10:49:09 +09003635 struct kstat kstat;
3636 struct ksmbd_kstat ksmbd_kstat;
3637 int rc;
3638 int i;
3639
3640 for (i = 0; i < priv->d_info->num_entry; i++) {
3641 struct dentry *dent;
3642
3643 if (dentry_name(priv->d_info, priv->info_level))
3644 return -EINVAL;
3645
3646 lock_dir(priv->dir_fp);
Christian Braunerda1e7ad2021-08-23 17:13:47 +02003647 dent = lookup_one(user_ns, priv->d_info->name,
3648 priv->dir_fp->filp->f_path.dentry,
3649 priv->d_info->name_len);
Namjae Jeone2f34482021-03-16 10:49:09 +09003650 unlock_dir(priv->dir_fp);
3651
3652 if (IS_ERR(dent)) {
3653 ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09003654 priv->d_info->name,
3655 PTR_ERR(dent));
Namjae Jeone2f34482021-03-16 10:49:09 +09003656 continue;
3657 }
3658 if (unlikely(d_is_negative(dent))) {
3659 dput(dent);
3660 ksmbd_debug(SMB, "Negative dentry `%s'\n",
3661 priv->d_info->name);
3662 continue;
3663 }
3664
3665 ksmbd_kstat.kstat = &kstat;
3666 if (priv->info_level != FILE_NAMES_INFORMATION)
3667 ksmbd_vfs_fill_dentry_attrs(priv->work,
Hyunchul Lee465d7202021-07-03 12:10:36 +09003668 user_ns,
Namjae Jeone2f34482021-03-16 10:49:09 +09003669 dent,
3670 &ksmbd_kstat);
3671
3672 rc = smb2_populate_readdir_entry(priv->work->conn,
3673 priv->info_level,
3674 priv->d_info,
3675 &ksmbd_kstat);
3676 dput(dent);
3677 if (rc)
3678 return rc;
3679 }
3680 return 0;
3681}
3682
3683static int reserve_populate_dentry(struct ksmbd_dir_info *d_info,
Namjae Jeon070fb212021-05-26 17:57:12 +09003684 int info_level)
Namjae Jeone2f34482021-03-16 10:49:09 +09003685{
3686 int struct_sz;
3687 int conv_len;
3688 int next_entry_offset;
3689
3690 struct_sz = readdir_info_level_struct_sz(info_level);
3691 if (struct_sz == -EOPNOTSUPP)
3692 return -EOPNOTSUPP;
3693
3694 conv_len = (d_info->name_len + 1) * 2;
Gustavo A. R. Silvad272e012022-11-15 09:35:10 -06003695 next_entry_offset = ALIGN(struct_sz + conv_len,
Namjae Jeone2f34482021-03-16 10:49:09 +09003696 KSMBD_DIR_INFO_ALIGNMENT);
3697
3698 if (next_entry_offset > d_info->out_buf_len) {
3699 d_info->out_buf_len = 0;
3700 return -ENOSPC;
3701 }
3702
3703 switch (info_level) {
3704 case FILE_FULL_DIRECTORY_INFORMATION:
3705 {
3706 struct file_full_directory_info *ffdinfo;
3707
3708 ffdinfo = (struct file_full_directory_info *)d_info->wptr;
3709 memcpy(ffdinfo->FileName, d_info->name, d_info->name_len);
3710 ffdinfo->FileName[d_info->name_len] = 0x00;
3711 ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3712 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3713 break;
3714 }
3715 case FILE_BOTH_DIRECTORY_INFORMATION:
3716 {
3717 struct file_both_directory_info *fbdinfo;
3718
3719 fbdinfo = (struct file_both_directory_info *)d_info->wptr;
3720 memcpy(fbdinfo->FileName, d_info->name, d_info->name_len);
3721 fbdinfo->FileName[d_info->name_len] = 0x00;
3722 fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3723 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3724 break;
3725 }
3726 case FILE_DIRECTORY_INFORMATION:
3727 {
3728 struct file_directory_info *fdinfo;
3729
3730 fdinfo = (struct file_directory_info *)d_info->wptr;
3731 memcpy(fdinfo->FileName, d_info->name, d_info->name_len);
3732 fdinfo->FileName[d_info->name_len] = 0x00;
3733 fdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3734 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3735 break;
3736 }
3737 case FILE_NAMES_INFORMATION:
3738 {
3739 struct file_names_info *fninfo;
3740
3741 fninfo = (struct file_names_info *)d_info->wptr;
3742 memcpy(fninfo->FileName, d_info->name, d_info->name_len);
3743 fninfo->FileName[d_info->name_len] = 0x00;
3744 fninfo->FileNameLength = cpu_to_le32(d_info->name_len);
3745 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3746 break;
3747 }
3748 case FILEID_FULL_DIRECTORY_INFORMATION:
3749 {
3750 struct file_id_full_dir_info *dinfo;
3751
3752 dinfo = (struct file_id_full_dir_info *)d_info->wptr;
3753 memcpy(dinfo->FileName, d_info->name, d_info->name_len);
3754 dinfo->FileName[d_info->name_len] = 0x00;
3755 dinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3756 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3757 break;
3758 }
3759 case FILEID_BOTH_DIRECTORY_INFORMATION:
3760 {
3761 struct file_id_both_directory_info *fibdinfo;
3762
3763 fibdinfo = (struct file_id_both_directory_info *)d_info->wptr;
3764 memcpy(fibdinfo->FileName, d_info->name, d_info->name_len);
3765 fibdinfo->FileName[d_info->name_len] = 0x00;
3766 fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3767 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3768 break;
3769 }
3770 case SMB_FIND_FILE_POSIX_INFO:
3771 {
3772 struct smb2_posix_info *posix_info;
3773
3774 posix_info = (struct smb2_posix_info *)d_info->wptr;
3775 memcpy(posix_info->name, d_info->name, d_info->name_len);
3776 posix_info->name[d_info->name_len] = 0x00;
3777 posix_info->name_len = cpu_to_le32(d_info->name_len);
3778 posix_info->NextEntryOffset =
3779 cpu_to_le32(next_entry_offset);
3780 break;
3781 }
3782 } /* switch (info_level) */
3783
3784 d_info->num_entry++;
3785 d_info->out_buf_len -= next_entry_offset;
3786 d_info->wptr += next_entry_offset;
3787 return 0;
3788}
3789
Al Viro25885a32022-08-16 11:57:56 -04003790static bool __query_dir(struct dir_context *ctx, const char *name, int namlen,
Namjae Jeon070fb212021-05-26 17:57:12 +09003791 loff_t offset, u64 ino, unsigned int d_type)
Namjae Jeone2f34482021-03-16 10:49:09 +09003792{
3793 struct ksmbd_readdir_data *buf;
3794 struct smb2_query_dir_private *priv;
3795 struct ksmbd_dir_info *d_info;
3796 int rc;
3797
3798 buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
3799 priv = buf->private;
3800 d_info = priv->d_info;
3801
3802 /* dot and dotdot entries are already reserved */
3803 if (!strcmp(".", name) || !strcmp("..", name))
Al Viro25885a32022-08-16 11:57:56 -04003804 return true;
Namjae Jeone2f34482021-03-16 10:49:09 +09003805 if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name))
Al Viro25885a32022-08-16 11:57:56 -04003806 return true;
Namjae Jeonb24c9332021-03-21 17:32:19 +09003807 if (!match_pattern(name, namlen, priv->search_pattern))
Al Viro25885a32022-08-16 11:57:56 -04003808 return true;
Namjae Jeone2f34482021-03-16 10:49:09 +09003809
3810 d_info->name = name;
3811 d_info->name_len = namlen;
3812 rc = reserve_populate_dentry(d_info, priv->info_level);
3813 if (rc)
Al Viro25885a32022-08-16 11:57:56 -04003814 return false;
3815 if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY)
Namjae Jeone2f34482021-03-16 10:49:09 +09003816 d_info->out_buf_len = 0;
Al Viro25885a32022-08-16 11:57:56 -04003817 return true;
Namjae Jeone2f34482021-03-16 10:49:09 +09003818}
3819
Namjae Jeone2f34482021-03-16 10:49:09 +09003820static int verify_info_level(int info_level)
3821{
3822 switch (info_level) {
3823 case FILE_FULL_DIRECTORY_INFORMATION:
3824 case FILE_BOTH_DIRECTORY_INFORMATION:
3825 case FILE_DIRECTORY_INFORMATION:
3826 case FILE_NAMES_INFORMATION:
3827 case FILEID_FULL_DIRECTORY_INFORMATION:
3828 case FILEID_BOTH_DIRECTORY_INFORMATION:
3829 case SMB_FIND_FILE_POSIX_INFO:
3830 break;
3831 default:
3832 return -EOPNOTSUPP;
3833 }
3834
3835 return 0;
3836}
3837
Namjae Jeon8f054112022-08-02 07:28:51 +09003838static int smb2_resp_buf_len(struct ksmbd_work *work, unsigned short hdr2_len)
3839{
3840 int free_len;
3841
3842 free_len = (int)(work->response_sz -
3843 (get_rfc1002_len(work->response_buf) + 4)) - hdr2_len;
3844 return free_len;
3845}
3846
Hyunchul Lee34061d62021-10-16 08:39:54 +09003847static int smb2_calc_max_out_buf_len(struct ksmbd_work *work,
3848 unsigned short hdr2_len,
3849 unsigned int out_buf_len)
3850{
3851 int free_len;
3852
3853 if (out_buf_len > work->conn->vals->max_trans_size)
3854 return -EINVAL;
3855
Namjae Jeon8f054112022-08-02 07:28:51 +09003856 free_len = smb2_resp_buf_len(work, hdr2_len);
Hyunchul Lee34061d62021-10-16 08:39:54 +09003857 if (free_len < 0)
3858 return -EINVAL;
3859
3860 return min_t(int, out_buf_len, free_len);
3861}
3862
Namjae Jeone2f34482021-03-16 10:49:09 +09003863int smb2_query_dir(struct ksmbd_work *work)
3864{
3865 struct ksmbd_conn *conn = work->conn;
3866 struct smb2_query_directory_req *req;
Namjae Jeoncb451722021-11-03 08:08:44 +09003867 struct smb2_query_directory_rsp *rsp;
Namjae Jeone2f34482021-03-16 10:49:09 +09003868 struct ksmbd_share_config *share = work->tcon->share_conf;
3869 struct ksmbd_file *dir_fp = NULL;
3870 struct ksmbd_dir_info d_info;
3871 int rc = 0;
3872 char *srch_ptr = NULL;
3873 unsigned char srch_flag;
3874 int buffer_sz;
3875 struct smb2_query_dir_private query_dir_private = {NULL, };
3876
Namjae Jeone2f34482021-03-16 10:49:09 +09003877 WORK_BUFFERS(work, req, rsp);
3878
3879 if (ksmbd_override_fsids(work)) {
3880 rsp->hdr.Status = STATUS_NO_MEMORY;
3881 smb2_set_err_rsp(work);
3882 return -ENOMEM;
3883 }
3884
3885 rc = verify_info_level(req->FileInformationClass);
3886 if (rc) {
3887 rc = -EFAULT;
3888 goto err_out2;
3889 }
3890
Paulo Alcantara2d004c62022-03-21 13:08:26 -03003891 dir_fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
Namjae Jeone2f34482021-03-16 10:49:09 +09003892 if (!dir_fp) {
3893 rc = -EBADF;
3894 goto err_out2;
3895 }
3896
3897 if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) ||
Hyunchul Leeaf349832021-06-30 18:25:53 +09003898 inode_permission(file_mnt_user_ns(dir_fp->filp),
3899 file_inode(dir_fp->filp),
Namjae Jeon070fb212021-05-26 17:57:12 +09003900 MAY_READ | MAY_EXEC)) {
Al Viro369c1632022-01-30 21:11:02 -05003901 pr_err("no right to enumerate directory (%pD)\n", dir_fp->filp);
Namjae Jeone2f34482021-03-16 10:49:09 +09003902 rc = -EACCES;
3903 goto err_out2;
3904 }
3905
3906 if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09003907 pr_err("can't do query dir for a file\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09003908 rc = -EINVAL;
3909 goto err_out2;
3910 }
3911
3912 srch_flag = req->Flags;
3913 srch_ptr = smb_strndup_from_utf16(req->Buffer,
Namjae Jeon070fb212021-05-26 17:57:12 +09003914 le16_to_cpu(req->FileNameLength), 1,
3915 conn->local_nls);
Namjae Jeone2f34482021-03-16 10:49:09 +09003916 if (IS_ERR(srch_ptr)) {
3917 ksmbd_debug(SMB, "Search Pattern not found\n");
3918 rc = -EINVAL;
3919 goto err_out2;
Namjae Jeon64b39f42021-03-30 14:25:35 +09003920 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09003921 ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr);
Namjae Jeon64b39f42021-03-30 14:25:35 +09003922 }
Namjae Jeone2f34482021-03-16 10:49:09 +09003923
Namjae Jeone2f34482021-03-16 10:49:09 +09003924 if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) {
3925 ksmbd_debug(SMB, "Restart directory scan\n");
3926 generic_file_llseek(dir_fp->filp, 0, SEEK_SET);
Namjae Jeone2f34482021-03-16 10:49:09 +09003927 }
3928
3929 memset(&d_info, 0, sizeof(struct ksmbd_dir_info));
3930 d_info.wptr = (char *)rsp->Buffer;
3931 d_info.rptr = (char *)rsp->Buffer;
Hyunchul Lee34061d62021-10-16 08:39:54 +09003932 d_info.out_buf_len =
3933 smb2_calc_max_out_buf_len(work, 8,
3934 le32_to_cpu(req->OutputBufferLength));
3935 if (d_info.out_buf_len < 0) {
3936 rc = -EINVAL;
3937 goto err_out;
3938 }
Namjae Jeone2f34482021-03-16 10:49:09 +09003939 d_info.flags = srch_flag;
3940
3941 /*
3942 * reserve dot and dotdot entries in head of buffer
3943 * in first response
3944 */
3945 rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass,
Namjae Jeon070fb212021-05-26 17:57:12 +09003946 dir_fp, &d_info, srch_ptr,
3947 smb2_populate_readdir_entry);
Namjae Jeone2f34482021-03-16 10:49:09 +09003948 if (rc == -ENOSPC)
3949 rc = 0;
3950 else if (rc)
3951 goto err_out;
3952
3953 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES))
3954 d_info.hide_dot_file = true;
3955
3956 buffer_sz = d_info.out_buf_len;
3957 d_info.rptr = d_info.wptr;
3958 query_dir_private.work = work;
3959 query_dir_private.search_pattern = srch_ptr;
3960 query_dir_private.dir_fp = dir_fp;
3961 query_dir_private.d_info = &d_info;
3962 query_dir_private.info_level = req->FileInformationClass;
3963 dir_fp->readdir_data.private = &query_dir_private;
3964 set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir);
3965
Namjae Jeone8c06192021-06-22 11:06:11 +09003966 rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx);
Namjae Jeon65ca7a32022-05-16 16:22:09 +09003967 /*
3968 * req->OutputBufferLength is too small to contain even one entry.
3969 * In this case, it immediately returns OutputBufferLength 0 to client.
3970 */
3971 if (!d_info.out_buf_len && !d_info.num_entry)
3972 goto no_buf_len;
Namjae Jeon88541cb2022-09-09 17:43:53 +09003973 if (rc > 0 || rc == -ENOSPC)
Namjae Jeone2f34482021-03-16 10:49:09 +09003974 rc = 0;
Namjae Jeon88541cb2022-09-09 17:43:53 +09003975 else if (rc)
Namjae Jeone2f34482021-03-16 10:49:09 +09003976 goto err_out;
3977
3978 d_info.wptr = d_info.rptr;
3979 d_info.out_buf_len = buffer_sz;
3980 rc = process_query_dir_entries(&query_dir_private);
3981 if (rc)
3982 goto err_out;
3983
3984 if (!d_info.data_count && d_info.out_buf_len >= 0) {
Namjae Jeon64b39f42021-03-30 14:25:35 +09003985 if (srch_flag & SMB2_RETURN_SINGLE_ENTRY && !is_asterisk(srch_ptr)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09003986 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
Namjae Jeon64b39f42021-03-30 14:25:35 +09003987 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09003988 dir_fp->dot_dotdot[0] = dir_fp->dot_dotdot[1] = 0;
3989 rsp->hdr.Status = STATUS_NO_MORE_FILES;
3990 }
3991 rsp->StructureSize = cpu_to_le16(9);
3992 rsp->OutputBufferOffset = cpu_to_le16(0);
3993 rsp->OutputBufferLength = cpu_to_le32(0);
3994 rsp->Buffer[0] = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09003995 inc_rfc1001_len(work->response_buf, 9);
Namjae Jeone2f34482021-03-16 10:49:09 +09003996 } else {
Namjae Jeon65ca7a32022-05-16 16:22:09 +09003997no_buf_len:
Namjae Jeone2f34482021-03-16 10:49:09 +09003998 ((struct file_directory_info *)
3999 ((char *)rsp->Buffer + d_info.last_entry_offset))
4000 ->NextEntryOffset = 0;
Namjae Jeon65ca7a32022-05-16 16:22:09 +09004001 if (d_info.data_count >= d_info.last_entry_off_align)
4002 d_info.data_count -= d_info.last_entry_off_align;
Namjae Jeone2f34482021-03-16 10:49:09 +09004003
4004 rsp->StructureSize = cpu_to_le16(9);
4005 rsp->OutputBufferOffset = cpu_to_le16(72);
4006 rsp->OutputBufferLength = cpu_to_le32(d_info.data_count);
Namjae Jeoncb451722021-11-03 08:08:44 +09004007 inc_rfc1001_len(work->response_buf, 8 + d_info.data_count);
Namjae Jeone2f34482021-03-16 10:49:09 +09004008 }
4009
4010 kfree(srch_ptr);
4011 ksmbd_fd_put(work, dir_fp);
4012 ksmbd_revert_fsids(work);
4013 return 0;
4014
4015err_out:
Namjae Jeonbde16942021-06-28 15:23:19 +09004016 pr_err("error while processing smb2 query dir rc = %d\n", rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09004017 kfree(srch_ptr);
4018
4019err_out2:
4020 if (rc == -EINVAL)
4021 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
4022 else if (rc == -EACCES)
4023 rsp->hdr.Status = STATUS_ACCESS_DENIED;
4024 else if (rc == -ENOENT)
4025 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
4026 else if (rc == -EBADF)
4027 rsp->hdr.Status = STATUS_FILE_CLOSED;
4028 else if (rc == -ENOMEM)
4029 rsp->hdr.Status = STATUS_NO_MEMORY;
4030 else if (rc == -EFAULT)
4031 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
Namjae Jeon88541cb2022-09-09 17:43:53 +09004032 else if (rc == -EIO)
4033 rsp->hdr.Status = STATUS_FILE_CORRUPT_ERROR;
Namjae Jeone2f34482021-03-16 10:49:09 +09004034 if (!rsp->hdr.Status)
4035 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
4036
4037 smb2_set_err_rsp(work);
4038 ksmbd_fd_put(work, dir_fp);
4039 ksmbd_revert_fsids(work);
4040 return 0;
4041}
4042
4043/**
4044 * buffer_check_err() - helper function to check buffer errors
4045 * @reqOutputBufferLength: max buffer length expected in command response
4046 * @rsp: query info response buffer contains output buffer length
Yang Lie230d012021-12-21 17:07:11 +08004047 * @rsp_org: base response buffer pointer in case of chained response
Namjae Jeone2f34482021-03-16 10:49:09 +09004048 * @infoclass_size: query info class response buffer size
4049 *
4050 * Return: 0 on success, otherwise error
4051 */
4052static int buffer_check_err(int reqOutputBufferLength,
Namjae Jeoncb451722021-11-03 08:08:44 +09004053 struct smb2_query_info_rsp *rsp,
4054 void *rsp_org, int infoclass_size)
Namjae Jeone2f34482021-03-16 10:49:09 +09004055{
4056 if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) {
4057 if (reqOutputBufferLength < infoclass_size) {
Namjae Jeonbde16942021-06-28 15:23:19 +09004058 pr_err("Invalid Buffer Size Requested\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09004059 rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH;
Namjae Jeoncb451722021-11-03 08:08:44 +09004060 *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr));
Namjae Jeone2f34482021-03-16 10:49:09 +09004061 return -EINVAL;
4062 }
4063
4064 ksmbd_debug(SMB, "Buffer Overflow\n");
4065 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
Namjae Jeoncb451722021-11-03 08:08:44 +09004066 *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr) +
Namjae Jeon64b39f42021-03-30 14:25:35 +09004067 reqOutputBufferLength);
4068 rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength);
Namjae Jeone2f34482021-03-16 10:49:09 +09004069 }
4070 return 0;
4071}
4072
Namjae Jeoncb451722021-11-03 08:08:44 +09004073static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp,
4074 void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004075{
4076 struct smb2_file_standard_info *sinfo;
4077
4078 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4079
4080 sinfo->AllocationSize = cpu_to_le64(4096);
4081 sinfo->EndOfFile = cpu_to_le64(0);
4082 sinfo->NumberOfLinks = cpu_to_le32(1);
4083 sinfo->DeletePending = 1;
4084 sinfo->Directory = 0;
4085 rsp->OutputBufferLength =
4086 cpu_to_le32(sizeof(struct smb2_file_standard_info));
Namjae Jeoncb451722021-11-03 08:08:44 +09004087 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_standard_info));
Namjae Jeone2f34482021-03-16 10:49:09 +09004088}
4089
Namjae Jeoncb451722021-11-03 08:08:44 +09004090static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num,
4091 void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004092{
4093 struct smb2_file_internal_info *file_info;
4094
4095 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4096
4097 /* any unique number */
4098 file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63));
4099 rsp->OutputBufferLength =
4100 cpu_to_le32(sizeof(struct smb2_file_internal_info));
Namjae Jeoncb451722021-11-03 08:08:44 +09004101 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
Namjae Jeone2f34482021-03-16 10:49:09 +09004102}
4103
Namjae Jeone2f34482021-03-16 10:49:09 +09004104static int smb2_get_info_file_pipe(struct ksmbd_session *sess,
Namjae Jeon070fb212021-05-26 17:57:12 +09004105 struct smb2_query_info_req *req,
Namjae Jeoncb451722021-11-03 08:08:44 +09004106 struct smb2_query_info_rsp *rsp,
4107 void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004108{
Namjae Jeon64b39f42021-03-30 14:25:35 +09004109 u64 id;
Namjae Jeone2f34482021-03-16 10:49:09 +09004110 int rc;
4111
4112 /*
4113 * Windows can sometime send query file info request on
4114 * pipe without opening it, checking error condition here
4115 */
Paulo Alcantara2d004c62022-03-21 13:08:26 -03004116 id = req->VolatileFileId;
Namjae Jeone2f34482021-03-16 10:49:09 +09004117 if (!ksmbd_session_rpc_method(sess, id))
4118 return -ENOENT;
4119
4120 ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n",
Paulo Alcantara2d004c62022-03-21 13:08:26 -03004121 req->FileInfoClass, req->VolatileFileId);
Namjae Jeone2f34482021-03-16 10:49:09 +09004122
4123 switch (req->FileInfoClass) {
4124 case FILE_STANDARD_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004125 get_standard_info_pipe(rsp, rsp_org);
Namjae Jeone2f34482021-03-16 10:49:09 +09004126 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
Namjae Jeoncb451722021-11-03 08:08:44 +09004127 rsp, rsp_org,
4128 FILE_STANDARD_INFORMATION_SIZE);
Namjae Jeone2f34482021-03-16 10:49:09 +09004129 break;
4130 case FILE_INTERNAL_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004131 get_internal_info_pipe(rsp, id, rsp_org);
Namjae Jeone2f34482021-03-16 10:49:09 +09004132 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
Namjae Jeoncb451722021-11-03 08:08:44 +09004133 rsp, rsp_org,
4134 FILE_INTERNAL_INFORMATION_SIZE);
Namjae Jeone2f34482021-03-16 10:49:09 +09004135 break;
4136 default:
4137 ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09004138 req->FileInfoClass);
Namjae Jeone2f34482021-03-16 10:49:09 +09004139 rc = -EOPNOTSUPP;
4140 }
4141 return rc;
4142}
4143
4144/**
4145 * smb2_get_ea() - handler for smb2 get extended attribute command
4146 * @work: smb work containing query info command buffer
Hyunchul Lee95fa1ce2021-03-21 17:05:56 +09004147 * @fp: ksmbd_file pointer
4148 * @req: get extended attribute request
4149 * @rsp: response buffer pointer
4150 * @rsp_org: base response buffer pointer in case of chained response
Namjae Jeone2f34482021-03-16 10:49:09 +09004151 *
4152 * Return: 0 on success, otherwise error
4153 */
Namjae Jeon64b39f42021-03-30 14:25:35 +09004154static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004155 struct smb2_query_info_req *req,
4156 struct smb2_query_info_rsp *rsp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004157{
4158 struct smb2_ea_info *eainfo, *prev_eainfo;
4159 char *name, *ptr, *xattr_list = NULL, *buf;
4160 int rc, name_len, value_len, xattr_list_len, idx;
4161 ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0;
4162 struct smb2_ea_info_req *ea_req = NULL;
Al Viroc22180a2022-08-04 12:51:14 -04004163 const struct path *path;
Hyunchul Lee465d7202021-07-03 12:10:36 +09004164 struct user_namespace *user_ns = file_mnt_user_ns(fp->filp);
Namjae Jeone2f34482021-03-16 10:49:09 +09004165
4166 if (!(fp->daccess & FILE_READ_EA_LE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09004167 pr_err("Not permitted to read ext attr : 0x%x\n",
4168 fp->daccess);
Namjae Jeone2f34482021-03-16 10:49:09 +09004169 return -EACCES;
4170 }
4171
4172 path = &fp->filp->f_path;
4173 /* single EA entry is requested with given user.* name */
Namjae Jeon64b39f42021-03-30 14:25:35 +09004174 if (req->InputBufferLength) {
Namjae Jeon6d562622021-09-18 18:45:12 +09004175 if (le32_to_cpu(req->InputBufferLength) <
4176 sizeof(struct smb2_ea_info_req))
4177 return -EINVAL;
4178
Namjae Jeone2f34482021-03-16 10:49:09 +09004179 ea_req = (struct smb2_ea_info_req *)req->Buffer;
Namjae Jeon64b39f42021-03-30 14:25:35 +09004180 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09004181 /* need to send all EAs, if no specific EA is requested*/
4182 if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY)
4183 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09004184 "All EAs are requested but need to send single EA entry in rsp flags 0x%x\n",
4185 le32_to_cpu(req->Flags));
Namjae Jeone2f34482021-03-16 10:49:09 +09004186 }
4187
Hyunchul Lee34061d62021-10-16 08:39:54 +09004188 buf_free_len =
4189 smb2_calc_max_out_buf_len(work, 8,
4190 le32_to_cpu(req->OutputBufferLength));
4191 if (buf_free_len < 0)
4192 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09004193
4194 rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4195 if (rc < 0) {
4196 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4197 goto out;
4198 } else if (!rc) { /* there is no EA in the file */
4199 ksmbd_debug(SMB, "no ea data in the file\n");
4200 goto done;
4201 }
4202 xattr_list_len = rc;
4203
4204 ptr = (char *)rsp->Buffer;
4205 eainfo = (struct smb2_ea_info *)ptr;
4206 prev_eainfo = eainfo;
4207 idx = 0;
4208
4209 while (idx < xattr_list_len) {
4210 name = xattr_list + idx;
4211 name_len = strlen(name);
4212
4213 ksmbd_debug(SMB, "%s, len %d\n", name, name_len);
4214 idx += name_len + 1;
4215
4216 /*
4217 * CIFS does not support EA other than user.* namespace,
4218 * still keep the framework generic, to list other attrs
4219 * in future.
4220 */
4221 if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4222 continue;
4223
4224 if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
Namjae Jeon64b39f42021-03-30 14:25:35 +09004225 STREAM_PREFIX_LEN))
Namjae Jeone2f34482021-03-16 10:49:09 +09004226 continue;
4227
4228 if (req->InputBufferLength &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09004229 strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name,
4230 ea_req->EaNameLength))
Namjae Jeone2f34482021-03-16 10:49:09 +09004231 continue;
4232
4233 if (!strncmp(&name[XATTR_USER_PREFIX_LEN],
Namjae Jeon64b39f42021-03-30 14:25:35 +09004234 DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN))
Namjae Jeone2f34482021-03-16 10:49:09 +09004235 continue;
4236
4237 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4238 name_len -= XATTR_USER_PREFIX_LEN;
4239
4240 ptr = (char *)(&eainfo->name + name_len + 1);
4241 buf_free_len -= (offsetof(struct smb2_ea_info, name) +
4242 name_len + 1);
4243 /* bailout if xattr can't fit in buf_free_len */
Hyunchul Lee465d7202021-07-03 12:10:36 +09004244 value_len = ksmbd_vfs_getxattr(user_ns, path->dentry,
4245 name, &buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004246 if (value_len <= 0) {
4247 rc = -ENOENT;
4248 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4249 goto out;
4250 }
4251
4252 buf_free_len -= value_len;
4253 if (buf_free_len < 0) {
Namjae Jeon79f6b112021-04-02 12:47:14 +09004254 kfree(buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004255 break;
4256 }
4257
4258 memcpy(ptr, buf, value_len);
Namjae Jeon79f6b112021-04-02 12:47:14 +09004259 kfree(buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004260
4261 ptr += value_len;
4262 eainfo->Flags = 0;
4263 eainfo->EaNameLength = name_len;
4264
Namjae Jeon64b39f42021-03-30 14:25:35 +09004265 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
Namjae Jeone2f34482021-03-16 10:49:09 +09004266 memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN],
Namjae Jeon070fb212021-05-26 17:57:12 +09004267 name_len);
Namjae Jeone2f34482021-03-16 10:49:09 +09004268 else
4269 memcpy(eainfo->name, name, name_len);
4270
4271 eainfo->name[name_len] = '\0';
4272 eainfo->EaValueLength = cpu_to_le16(value_len);
4273 next_offset = offsetof(struct smb2_ea_info, name) +
4274 name_len + 1 + value_len;
4275
4276 /* align next xattr entry at 4 byte bundary */
4277 alignment_bytes = ((next_offset + 3) & ~3) - next_offset;
4278 if (alignment_bytes) {
4279 memset(ptr, '\0', alignment_bytes);
4280 ptr += alignment_bytes;
4281 next_offset += alignment_bytes;
4282 buf_free_len -= alignment_bytes;
4283 }
4284 eainfo->NextEntryOffset = cpu_to_le32(next_offset);
4285 prev_eainfo = eainfo;
4286 eainfo = (struct smb2_ea_info *)ptr;
4287 rsp_data_cnt += next_offset;
4288
4289 if (req->InputBufferLength) {
4290 ksmbd_debug(SMB, "single entry requested\n");
4291 break;
4292 }
4293 }
4294
4295 /* no more ea entries */
4296 prev_eainfo->NextEntryOffset = 0;
4297done:
4298 rc = 0;
4299 if (rsp_data_cnt == 0)
4300 rsp->hdr.Status = STATUS_NO_EAS_ON_FILE;
4301 rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt);
4302 inc_rfc1001_len(rsp_org, rsp_data_cnt);
4303out:
Namjae Jeon79f6b112021-04-02 12:47:14 +09004304 kvfree(xattr_list);
Namjae Jeone2f34482021-03-16 10:49:09 +09004305 return rc;
4306}
4307
4308static void get_file_access_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004309 struct ksmbd_file *fp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004310{
4311 struct smb2_file_access_info *file_info;
4312
4313 file_info = (struct smb2_file_access_info *)rsp->Buffer;
4314 file_info->AccessFlags = fp->daccess;
4315 rsp->OutputBufferLength =
4316 cpu_to_le32(sizeof(struct smb2_file_access_info));
4317 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info));
4318}
4319
4320static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004321 struct ksmbd_file *fp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004322{
Namjae Jeon88d30052021-09-29 15:37:18 +09004323 struct smb2_file_basic_info *basic_info;
Namjae Jeone2f34482021-03-16 10:49:09 +09004324 struct kstat stat;
4325 u64 time;
4326
4327 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09004328 pr_err("no right to read the attributes : 0x%x\n",
4329 fp->daccess);
Namjae Jeone2f34482021-03-16 10:49:09 +09004330 return -EACCES;
4331 }
4332
Namjae Jeon88d30052021-09-29 15:37:18 +09004333 basic_info = (struct smb2_file_basic_info *)rsp->Buffer;
Hyunchul Leeaf349832021-06-30 18:25:53 +09004334 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4335 &stat);
Namjae Jeone2f34482021-03-16 10:49:09 +09004336 basic_info->CreationTime = cpu_to_le64(fp->create_time);
4337 time = ksmbd_UnixTimeToNT(stat.atime);
4338 basic_info->LastAccessTime = cpu_to_le64(time);
4339 time = ksmbd_UnixTimeToNT(stat.mtime);
4340 basic_info->LastWriteTime = cpu_to_le64(time);
4341 time = ksmbd_UnixTimeToNT(stat.ctime);
4342 basic_info->ChangeTime = cpu_to_le64(time);
4343 basic_info->Attributes = fp->f_ci->m_fattr;
4344 basic_info->Pad1 = 0;
4345 rsp->OutputBufferLength =
Namjae Jeon88d30052021-09-29 15:37:18 +09004346 cpu_to_le32(sizeof(struct smb2_file_basic_info));
4347 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_basic_info));
Namjae Jeone2f34482021-03-16 10:49:09 +09004348 return 0;
4349}
4350
4351static unsigned long long get_allocation_size(struct inode *inode,
Namjae Jeon070fb212021-05-26 17:57:12 +09004352 struct kstat *stat)
Namjae Jeone2f34482021-03-16 10:49:09 +09004353{
4354 unsigned long long alloc_size = 0;
4355
4356 if (!S_ISDIR(stat->mode)) {
4357 if ((inode->i_blocks << 9) <= stat->size)
4358 alloc_size = stat->size;
4359 else
4360 alloc_size = inode->i_blocks << 9;
Namjae Jeone2f34482021-03-16 10:49:09 +09004361 }
4362
4363 return alloc_size;
4364}
4365
4366static void get_file_standard_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004367 struct ksmbd_file *fp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004368{
4369 struct smb2_file_standard_info *sinfo;
4370 unsigned int delete_pending;
4371 struct inode *inode;
4372 struct kstat stat;
4373
Namjae Jeonab0b2632021-06-29 09:20:13 +09004374 inode = file_inode(fp->filp);
Hyunchul Leeaf349832021-06-30 18:25:53 +09004375 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
Namjae Jeone2f34482021-03-16 10:49:09 +09004376
4377 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4378 delete_pending = ksmbd_inode_pending_delete(fp);
4379
4380 sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat));
4381 sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4382 sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending);
4383 sinfo->DeletePending = delete_pending;
4384 sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4385 rsp->OutputBufferLength =
4386 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4387 inc_rfc1001_len(rsp_org,
4388 sizeof(struct smb2_file_standard_info));
4389}
4390
4391static void get_file_alignment_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004392 void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004393{
4394 struct smb2_file_alignment_info *file_info;
4395
4396 file_info = (struct smb2_file_alignment_info *)rsp->Buffer;
4397 file_info->AlignmentRequirement = 0;
4398 rsp->OutputBufferLength =
4399 cpu_to_le32(sizeof(struct smb2_file_alignment_info));
4400 inc_rfc1001_len(rsp_org,
4401 sizeof(struct smb2_file_alignment_info));
4402}
4403
4404static int get_file_all_info(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09004405 struct smb2_query_info_rsp *rsp,
4406 struct ksmbd_file *fp,
4407 void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004408{
4409 struct ksmbd_conn *conn = work->conn;
4410 struct smb2_file_all_info *file_info;
4411 unsigned int delete_pending;
4412 struct inode *inode;
4413 struct kstat stat;
4414 int conv_len;
4415 char *filename;
4416 u64 time;
4417
4418 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4419 ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09004420 fp->daccess);
Namjae Jeone2f34482021-03-16 10:49:09 +09004421 return -EACCES;
4422 }
4423
Namjae Jeon50f500b2022-02-24 11:03:41 +09004424 filename = convert_to_nt_pathname(work->tcon->share_conf, &fp->filp->f_path);
4425 if (IS_ERR(filename))
4426 return PTR_ERR(filename);
Namjae Jeone2f34482021-03-16 10:49:09 +09004427
Namjae Jeonab0b2632021-06-29 09:20:13 +09004428 inode = file_inode(fp->filp);
Hyunchul Leeaf349832021-06-30 18:25:53 +09004429 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
Namjae Jeone2f34482021-03-16 10:49:09 +09004430
4431 ksmbd_debug(SMB, "filename = %s\n", filename);
4432 delete_pending = ksmbd_inode_pending_delete(fp);
4433 file_info = (struct smb2_file_all_info *)rsp->Buffer;
4434
4435 file_info->CreationTime = cpu_to_le64(fp->create_time);
4436 time = ksmbd_UnixTimeToNT(stat.atime);
4437 file_info->LastAccessTime = cpu_to_le64(time);
4438 time = ksmbd_UnixTimeToNT(stat.mtime);
4439 file_info->LastWriteTime = cpu_to_le64(time);
4440 time = ksmbd_UnixTimeToNT(stat.ctime);
4441 file_info->ChangeTime = cpu_to_le64(time);
4442 file_info->Attributes = fp->f_ci->m_fattr;
4443 file_info->Pad1 = 0;
4444 file_info->AllocationSize =
4445 cpu_to_le64(get_allocation_size(inode, &stat));
4446 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4447 file_info->NumberOfLinks =
4448 cpu_to_le32(get_nlink(&stat) - delete_pending);
4449 file_info->DeletePending = delete_pending;
4450 file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4451 file_info->Pad2 = 0;
4452 file_info->IndexNumber = cpu_to_le64(stat.ino);
4453 file_info->EASize = 0;
4454 file_info->AccessFlags = fp->daccess;
4455 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4456 file_info->Mode = fp->coption;
4457 file_info->AlignmentRequirement = 0;
Namjae Jeon070fb212021-05-26 17:57:12 +09004458 conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename,
4459 PATH_MAX, conn->local_nls, 0);
Namjae Jeone2f34482021-03-16 10:49:09 +09004460 conv_len *= 2;
4461 file_info->FileNameLength = cpu_to_le32(conv_len);
4462 rsp->OutputBufferLength =
4463 cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1);
4464 kfree(filename);
4465 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4466 return 0;
4467}
4468
4469static void get_file_alternate_info(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09004470 struct smb2_query_info_rsp *rsp,
4471 struct ksmbd_file *fp,
4472 void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004473{
4474 struct ksmbd_conn *conn = work->conn;
4475 struct smb2_file_alt_name_info *file_info;
Namjae Jeon493fa2f2021-06-29 09:22:16 +09004476 struct dentry *dentry = fp->filp->f_path.dentry;
Namjae Jeone2f34482021-03-16 10:49:09 +09004477 int conv_len;
Namjae Jeone2f34482021-03-16 10:49:09 +09004478
Namjae Jeon493fa2f2021-06-29 09:22:16 +09004479 spin_lock(&dentry->d_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09004480 file_info = (struct smb2_file_alt_name_info *)rsp->Buffer;
4481 conv_len = ksmbd_extract_shortname(conn,
Namjae Jeon493fa2f2021-06-29 09:22:16 +09004482 dentry->d_name.name,
Namjae Jeone2f34482021-03-16 10:49:09 +09004483 file_info->FileName);
Namjae Jeon493fa2f2021-06-29 09:22:16 +09004484 spin_unlock(&dentry->d_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09004485 file_info->FileNameLength = cpu_to_le32(conv_len);
4486 rsp->OutputBufferLength =
4487 cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len);
4488 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4489}
4490
4491static void get_file_stream_info(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09004492 struct smb2_query_info_rsp *rsp,
4493 struct ksmbd_file *fp,
4494 void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004495{
4496 struct ksmbd_conn *conn = work->conn;
4497 struct smb2_file_stream_info *file_info;
4498 char *stream_name, *xattr_list = NULL, *stream_buf;
4499 struct kstat stat;
Al Viroc22180a2022-08-04 12:51:14 -04004500 const struct path *path = &fp->filp->f_path;
Namjae Jeone2f34482021-03-16 10:49:09 +09004501 ssize_t xattr_list_len;
4502 int nbytes = 0, streamlen, stream_name_len, next, idx = 0;
Hyunchul Lee34061d62021-10-16 08:39:54 +09004503 int buf_free_len;
4504 struct smb2_query_info_req *req = ksmbd_req_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +09004505
Hyunchul Leeaf349832021-06-30 18:25:53 +09004506 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4507 &stat);
Namjae Jeone2f34482021-03-16 10:49:09 +09004508 file_info = (struct smb2_file_stream_info *)rsp->Buffer;
4509
Namjae Jeon1ec721532021-11-21 11:32:39 +09004510 buf_free_len =
4511 smb2_calc_max_out_buf_len(work, 8,
4512 le32_to_cpu(req->OutputBufferLength));
4513 if (buf_free_len < 0)
4514 goto out;
4515
Namjae Jeone2f34482021-03-16 10:49:09 +09004516 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4517 if (xattr_list_len < 0) {
4518 goto out;
4519 } else if (!xattr_list_len) {
4520 ksmbd_debug(SMB, "empty xattr in the file\n");
4521 goto out;
4522 }
4523
4524 while (idx < xattr_list_len) {
4525 stream_name = xattr_list + idx;
4526 streamlen = strlen(stream_name);
4527 idx += streamlen + 1;
4528
4529 ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen);
4530
4531 if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN],
Namjae Jeon64b39f42021-03-30 14:25:35 +09004532 STREAM_PREFIX, STREAM_PREFIX_LEN))
Namjae Jeone2f34482021-03-16 10:49:09 +09004533 continue;
4534
4535 stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN +
4536 STREAM_PREFIX_LEN);
4537 streamlen = stream_name_len;
4538
4539 /* plus : size */
4540 streamlen += 1;
4541 stream_buf = kmalloc(streamlen + 1, GFP_KERNEL);
4542 if (!stream_buf)
4543 break;
4544
4545 streamlen = snprintf(stream_buf, streamlen + 1,
Namjae Jeon070fb212021-05-26 17:57:12 +09004546 ":%s", &stream_name[XATTR_NAME_STREAM_LEN]);
Namjae Jeone2f34482021-03-16 10:49:09 +09004547
Hyunchul Lee34061d62021-10-16 08:39:54 +09004548 next = sizeof(struct smb2_file_stream_info) + streamlen * 2;
Namjae Jeon178ca6f2021-11-24 10:23:02 +09004549 if (next > buf_free_len) {
4550 kfree(stream_buf);
Hyunchul Lee34061d62021-10-16 08:39:54 +09004551 break;
Namjae Jeon178ca6f2021-11-24 10:23:02 +09004552 }
Hyunchul Lee34061d62021-10-16 08:39:54 +09004553
Namjae Jeon070fb212021-05-26 17:57:12 +09004554 file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes];
Namjae Jeone2f34482021-03-16 10:49:09 +09004555 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
Namjae Jeon070fb212021-05-26 17:57:12 +09004556 stream_buf, streamlen,
4557 conn->local_nls, 0);
Namjae Jeone2f34482021-03-16 10:49:09 +09004558 streamlen *= 2;
4559 kfree(stream_buf);
4560 file_info->StreamNameLength = cpu_to_le32(streamlen);
4561 file_info->StreamSize = cpu_to_le64(stream_name_len);
4562 file_info->StreamAllocationSize = cpu_to_le64(stream_name_len);
4563
Namjae Jeone2f34482021-03-16 10:49:09 +09004564 nbytes += next;
Hyunchul Lee34061d62021-10-16 08:39:54 +09004565 buf_free_len -= next;
Namjae Jeone2f34482021-03-16 10:49:09 +09004566 file_info->NextEntryOffset = cpu_to_le32(next);
4567 }
4568
Namjae Jeon1ec721532021-11-21 11:32:39 +09004569out:
Hyunchul Lee34061d62021-10-16 08:39:54 +09004570 if (!S_ISDIR(stat.mode) &&
4571 buf_free_len >= sizeof(struct smb2_file_stream_info) + 7 * 2) {
Namjae Jeone2f34482021-03-16 10:49:09 +09004572 file_info = (struct smb2_file_stream_info *)
4573 &rsp->Buffer[nbytes];
4574 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
Namjae Jeon070fb212021-05-26 17:57:12 +09004575 "::$DATA", 7, conn->local_nls, 0);
Namjae Jeone2f34482021-03-16 10:49:09 +09004576 streamlen *= 2;
4577 file_info->StreamNameLength = cpu_to_le32(streamlen);
Namjae Jeon1ec721532021-11-21 11:32:39 +09004578 file_info->StreamSize = cpu_to_le64(stat.size);
4579 file_info->StreamAllocationSize = cpu_to_le64(stat.blocks << 9);
Namjae Jeone2f34482021-03-16 10:49:09 +09004580 nbytes += sizeof(struct smb2_file_stream_info) + streamlen;
4581 }
4582
4583 /* last entry offset should be 0 */
4584 file_info->NextEntryOffset = 0;
Namjae Jeon79f6b112021-04-02 12:47:14 +09004585 kvfree(xattr_list);
Namjae Jeone2f34482021-03-16 10:49:09 +09004586
4587 rsp->OutputBufferLength = cpu_to_le32(nbytes);
4588 inc_rfc1001_len(rsp_org, nbytes);
4589}
4590
4591static void get_file_internal_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004592 struct ksmbd_file *fp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004593{
4594 struct smb2_file_internal_info *file_info;
4595 struct kstat stat;
4596
Hyunchul Leeaf349832021-06-30 18:25:53 +09004597 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4598 &stat);
Namjae Jeone2f34482021-03-16 10:49:09 +09004599 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4600 file_info->IndexNumber = cpu_to_le64(stat.ino);
4601 rsp->OutputBufferLength =
4602 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4603 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4604}
4605
4606static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004607 struct ksmbd_file *fp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004608{
4609 struct smb2_file_ntwrk_info *file_info;
4610 struct inode *inode;
4611 struct kstat stat;
4612 u64 time;
4613
4614 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09004615 pr_err("no right to read the attributes : 0x%x\n",
4616 fp->daccess);
Namjae Jeone2f34482021-03-16 10:49:09 +09004617 return -EACCES;
4618 }
4619
4620 file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer;
4621
Namjae Jeonab0b2632021-06-29 09:20:13 +09004622 inode = file_inode(fp->filp);
Hyunchul Leeaf349832021-06-30 18:25:53 +09004623 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
Namjae Jeone2f34482021-03-16 10:49:09 +09004624
4625 file_info->CreationTime = cpu_to_le64(fp->create_time);
4626 time = ksmbd_UnixTimeToNT(stat.atime);
4627 file_info->LastAccessTime = cpu_to_le64(time);
4628 time = ksmbd_UnixTimeToNT(stat.mtime);
4629 file_info->LastWriteTime = cpu_to_le64(time);
4630 time = ksmbd_UnixTimeToNT(stat.ctime);
4631 file_info->ChangeTime = cpu_to_le64(time);
4632 file_info->Attributes = fp->f_ci->m_fattr;
4633 file_info->AllocationSize =
4634 cpu_to_le64(get_allocation_size(inode, &stat));
4635 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4636 file_info->Reserved = cpu_to_le32(0);
4637 rsp->OutputBufferLength =
4638 cpu_to_le32(sizeof(struct smb2_file_ntwrk_info));
4639 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info));
4640 return 0;
4641}
4642
Namjae Jeon64b39f42021-03-30 14:25:35 +09004643static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004644{
4645 struct smb2_file_ea_info *file_info;
4646
4647 file_info = (struct smb2_file_ea_info *)rsp->Buffer;
4648 file_info->EASize = 0;
4649 rsp->OutputBufferLength =
4650 cpu_to_le32(sizeof(struct smb2_file_ea_info));
4651 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info));
4652}
4653
4654static void get_file_position_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004655 struct ksmbd_file *fp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004656{
4657 struct smb2_file_pos_info *file_info;
4658
4659 file_info = (struct smb2_file_pos_info *)rsp->Buffer;
4660 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4661 rsp->OutputBufferLength =
4662 cpu_to_le32(sizeof(struct smb2_file_pos_info));
4663 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info));
4664}
4665
4666static void get_file_mode_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004667 struct ksmbd_file *fp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004668{
4669 struct smb2_file_mode_info *file_info;
4670
4671 file_info = (struct smb2_file_mode_info *)rsp->Buffer;
4672 file_info->Mode = fp->coption & FILE_MODE_INFO_MASK;
4673 rsp->OutputBufferLength =
4674 cpu_to_le32(sizeof(struct smb2_file_mode_info));
4675 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info));
4676}
4677
4678static void get_file_compression_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004679 struct ksmbd_file *fp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004680{
4681 struct smb2_file_comp_info *file_info;
4682 struct kstat stat;
4683
Hyunchul Leeaf349832021-06-30 18:25:53 +09004684 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4685 &stat);
Namjae Jeone2f34482021-03-16 10:49:09 +09004686
4687 file_info = (struct smb2_file_comp_info *)rsp->Buffer;
4688 file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9);
4689 file_info->CompressionFormat = COMPRESSION_FORMAT_NONE;
4690 file_info->CompressionUnitShift = 0;
4691 file_info->ChunkShift = 0;
4692 file_info->ClusterShift = 0;
4693 memset(&file_info->Reserved[0], 0, 3);
4694
4695 rsp->OutputBufferLength =
4696 cpu_to_le32(sizeof(struct smb2_file_comp_info));
4697 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info));
4698}
4699
4700static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004701 struct ksmbd_file *fp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004702{
4703 struct smb2_file_attr_tag_info *file_info;
4704
4705 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09004706 pr_err("no right to read the attributes : 0x%x\n",
4707 fp->daccess);
Namjae Jeone2f34482021-03-16 10:49:09 +09004708 return -EACCES;
4709 }
4710
4711 file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer;
4712 file_info->FileAttributes = fp->f_ci->m_fattr;
4713 file_info->ReparseTag = 0;
4714 rsp->OutputBufferLength =
4715 cpu_to_le32(sizeof(struct smb2_file_attr_tag_info));
Namjae Jeon070fb212021-05-26 17:57:12 +09004716 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info));
Namjae Jeone2f34482021-03-16 10:49:09 +09004717 return 0;
4718}
4719
4720static int find_file_posix_info(struct smb2_query_info_rsp *rsp,
Namjae Jeon070fb212021-05-26 17:57:12 +09004721 struct ksmbd_file *fp, void *rsp_org)
Namjae Jeone2f34482021-03-16 10:49:09 +09004722{
4723 struct smb311_posix_qinfo *file_info;
Namjae Jeonab0b2632021-06-29 09:20:13 +09004724 struct inode *inode = file_inode(fp->filp);
Namjae Jeond5919f22022-09-22 23:27:34 +09004725 struct user_namespace *user_ns = file_mnt_user_ns(fp->filp);
4726 vfsuid_t vfsuid = i_uid_into_vfsuid(user_ns, inode);
4727 vfsgid_t vfsgid = i_gid_into_vfsgid(user_ns, inode);
Namjae Jeone2f34482021-03-16 10:49:09 +09004728 u64 time;
Namjae Jeond5919f22022-09-22 23:27:34 +09004729 int out_buf_len = sizeof(struct smb311_posix_qinfo) + 32;
Namjae Jeone2f34482021-03-16 10:49:09 +09004730
4731 file_info = (struct smb311_posix_qinfo *)rsp->Buffer;
4732 file_info->CreationTime = cpu_to_le64(fp->create_time);
4733 time = ksmbd_UnixTimeToNT(inode->i_atime);
4734 file_info->LastAccessTime = cpu_to_le64(time);
4735 time = ksmbd_UnixTimeToNT(inode->i_mtime);
4736 file_info->LastWriteTime = cpu_to_le64(time);
4737 time = ksmbd_UnixTimeToNT(inode->i_ctime);
4738 file_info->ChangeTime = cpu_to_le64(time);
4739 file_info->DosAttributes = fp->f_ci->m_fattr;
4740 file_info->Inode = cpu_to_le64(inode->i_ino);
4741 file_info->EndOfFile = cpu_to_le64(inode->i_size);
4742 file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9);
4743 file_info->HardLinks = cpu_to_le32(inode->i_nlink);
Namjae Jeonf6c2b202022-09-22 23:16:12 +09004744 file_info->Mode = cpu_to_le32(inode->i_mode & 0777);
Namjae Jeone2f34482021-03-16 10:49:09 +09004745 file_info->DeviceId = cpu_to_le32(inode->i_rdev);
Namjae Jeond5919f22022-09-22 23:27:34 +09004746
4747 /*
4748 * Sids(32) contain two sids(Domain sid(16), UNIX group sid(16)).
4749 * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) +
4750 * sub_auth(4 * 1(num_subauth)) + RID(4).
4751 */
4752 id_to_sid(from_kuid_munged(&init_user_ns, vfsuid_into_kuid(vfsuid)),
4753 SIDUNIX_USER, (struct smb_sid *)&file_info->Sids[0]);
4754 id_to_sid(from_kgid_munged(&init_user_ns, vfsgid_into_kgid(vfsgid)),
4755 SIDUNIX_GROUP, (struct smb_sid *)&file_info->Sids[16]);
4756
4757 rsp->OutputBufferLength = cpu_to_le32(out_buf_len);
4758 inc_rfc1001_len(rsp_org, out_buf_len);
4759 return out_buf_len;
Namjae Jeone2f34482021-03-16 10:49:09 +09004760}
4761
Namjae Jeone2f34482021-03-16 10:49:09 +09004762static int smb2_get_info_file(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09004763 struct smb2_query_info_req *req,
Namjae Jeoncb451722021-11-03 08:08:44 +09004764 struct smb2_query_info_rsp *rsp)
Namjae Jeone2f34482021-03-16 10:49:09 +09004765{
4766 struct ksmbd_file *fp;
4767 int fileinfoclass = 0;
4768 int rc = 0;
4769 int file_infoclass_size;
4770 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
4771
4772 if (test_share_config_flag(work->tcon->share_conf,
Namjae Jeon64b39f42021-03-30 14:25:35 +09004773 KSMBD_SHARE_FLAG_PIPE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09004774 /* smb2 info file called for pipe */
Namjae Jeoncb451722021-11-03 08:08:44 +09004775 return smb2_get_info_file_pipe(work->sess, req, rsp,
4776 work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004777 }
4778
4779 if (work->next_smb2_rcv_hdr_off) {
Paulo Alcantara2d004c62022-03-21 13:08:26 -03004780 if (!has_file_id(req->VolatileFileId)) {
Namjae Jeon38673692021-07-08 12:32:27 +09004781 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09004782 work->compound_fid);
Namjae Jeone2f34482021-03-16 10:49:09 +09004783 id = work->compound_fid;
4784 pid = work->compound_pfid;
4785 }
4786 }
4787
Namjae Jeon38673692021-07-08 12:32:27 +09004788 if (!has_file_id(id)) {
Paulo Alcantara2d004c62022-03-21 13:08:26 -03004789 id = req->VolatileFileId;
4790 pid = req->PersistentFileId;
Namjae Jeone2f34482021-03-16 10:49:09 +09004791 }
4792
4793 fp = ksmbd_lookup_fd_slow(work, id, pid);
4794 if (!fp)
4795 return -ENOENT;
4796
4797 fileinfoclass = req->FileInfoClass;
4798
4799 switch (fileinfoclass) {
4800 case FILE_ACCESS_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004801 get_file_access_info(rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004802 file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE;
4803 break;
4804
4805 case FILE_BASIC_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004806 rc = get_file_basic_info(rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004807 file_infoclass_size = FILE_BASIC_INFORMATION_SIZE;
4808 break;
4809
4810 case FILE_STANDARD_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004811 get_file_standard_info(rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004812 file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE;
4813 break;
4814
4815 case FILE_ALIGNMENT_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004816 get_file_alignment_info(rsp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004817 file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE;
4818 break;
4819
4820 case FILE_ALL_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004821 rc = get_file_all_info(work, rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004822 file_infoclass_size = FILE_ALL_INFORMATION_SIZE;
4823 break;
4824
4825 case FILE_ALTERNATE_NAME_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004826 get_file_alternate_info(work, rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004827 file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE;
4828 break;
4829
4830 case FILE_STREAM_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004831 get_file_stream_info(work, rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004832 file_infoclass_size = FILE_STREAM_INFORMATION_SIZE;
4833 break;
4834
4835 case FILE_INTERNAL_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004836 get_file_internal_info(rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004837 file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE;
4838 break;
4839
4840 case FILE_NETWORK_OPEN_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004841 rc = get_file_network_open_info(rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004842 file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE;
4843 break;
4844
4845 case FILE_EA_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004846 get_file_ea_info(rsp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004847 file_infoclass_size = FILE_EA_INFORMATION_SIZE;
4848 break;
4849
4850 case FILE_FULL_EA_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004851 rc = smb2_get_ea(work, fp, req, rsp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004852 file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE;
4853 break;
4854
4855 case FILE_POSITION_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004856 get_file_position_info(rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004857 file_infoclass_size = FILE_POSITION_INFORMATION_SIZE;
4858 break;
4859
4860 case FILE_MODE_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004861 get_file_mode_info(rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004862 file_infoclass_size = FILE_MODE_INFORMATION_SIZE;
4863 break;
4864
4865 case FILE_COMPRESSION_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004866 get_file_compression_info(rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004867 file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE;
4868 break;
4869
4870 case FILE_ATTRIBUTE_TAG_INFORMATION:
Namjae Jeoncb451722021-11-03 08:08:44 +09004871 rc = get_file_attribute_tag_info(rsp, fp, work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004872 file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE;
4873 break;
4874 case SMB_FIND_FILE_POSIX_INFO:
4875 if (!work->tcon->posix_extensions) {
Namjae Jeonbde16942021-06-28 15:23:19 +09004876 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09004877 rc = -EOPNOTSUPP;
4878 } else {
Namjae Jeond5919f22022-09-22 23:27:34 +09004879 file_infoclass_size = find_file_posix_info(rsp, fp,
4880 work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09004881 }
4882 break;
4883 default:
4884 ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n",
4885 fileinfoclass);
4886 rc = -EOPNOTSUPP;
4887 }
4888 if (!rc)
4889 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
Namjae Jeoncb451722021-11-03 08:08:44 +09004890 rsp, work->response_buf,
Namjae Jeone2f34482021-03-16 10:49:09 +09004891 file_infoclass_size);
4892 ksmbd_fd_put(work, fp);
4893 return rc;
4894}
4895
Namjae Jeone2f34482021-03-16 10:49:09 +09004896static int smb2_get_info_filesystem(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09004897 struct smb2_query_info_req *req,
Namjae Jeoncb451722021-11-03 08:08:44 +09004898 struct smb2_query_info_rsp *rsp)
Namjae Jeone2f34482021-03-16 10:49:09 +09004899{
4900 struct ksmbd_session *sess = work->sess;
Namjae Jeonaf7c39d2022-07-25 13:36:52 +09004901 struct ksmbd_conn *conn = work->conn;
Namjae Jeone2f34482021-03-16 10:49:09 +09004902 struct ksmbd_share_config *share = work->tcon->share_conf;
4903 int fsinfoclass = 0;
4904 struct kstatfs stfs;
4905 struct path path;
4906 int rc = 0, len;
4907 int fs_infoclass_size = 0;
4908
Hyunchul Lee265fd192021-09-25 00:06:16 +09004909 rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path);
Namjae Jeone2f34482021-03-16 10:49:09 +09004910 if (rc) {
Namjae Jeonbde16942021-06-28 15:23:19 +09004911 pr_err("cannot create vfs path\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09004912 return -EIO;
4913 }
4914
4915 rc = vfs_statfs(&path, &stfs);
4916 if (rc) {
Namjae Jeonbde16942021-06-28 15:23:19 +09004917 pr_err("cannot do stat of path %s\n", share->path);
Namjae Jeone2f34482021-03-16 10:49:09 +09004918 path_put(&path);
4919 return -EIO;
4920 }
4921
4922 fsinfoclass = req->FileInfoClass;
4923
4924 switch (fsinfoclass) {
4925 case FS_DEVICE_INFORMATION:
4926 {
4927 struct filesystem_device_info *info;
4928
4929 info = (struct filesystem_device_info *)rsp->Buffer;
4930
4931 info->DeviceType = cpu_to_le32(stfs.f_type);
4932 info->DeviceCharacteristics = cpu_to_le32(0x00000020);
4933 rsp->OutputBufferLength = cpu_to_le32(8);
Namjae Jeoncb451722021-11-03 08:08:44 +09004934 inc_rfc1001_len(work->response_buf, 8);
Namjae Jeone2f34482021-03-16 10:49:09 +09004935 fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE;
4936 break;
4937 }
4938 case FS_ATTRIBUTE_INFORMATION:
4939 {
4940 struct filesystem_attribute_info *info;
4941 size_t sz;
4942
4943 info = (struct filesystem_attribute_info *)rsp->Buffer;
4944 info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS |
4945 FILE_PERSISTENT_ACLS |
4946 FILE_UNICODE_ON_DISK |
4947 FILE_CASE_PRESERVED_NAMES |
Namjae Jeoneb817362021-05-18 10:37:59 +09004948 FILE_CASE_SENSITIVE_SEARCH |
4949 FILE_SUPPORTS_BLOCK_REFCOUNTING);
Namjae Jeone2f34482021-03-16 10:49:09 +09004950
4951 info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps);
4952
4953 info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen);
4954 len = smbConvertToUTF16((__le16 *)info->FileSystemName,
4955 "NTFS", PATH_MAX, conn->local_nls, 0);
4956 len = len * 2;
4957 info->FileSystemNameLen = cpu_to_le32(len);
4958 sz = sizeof(struct filesystem_attribute_info) - 2 + len;
4959 rsp->OutputBufferLength = cpu_to_le32(sz);
Namjae Jeoncb451722021-11-03 08:08:44 +09004960 inc_rfc1001_len(work->response_buf, sz);
Namjae Jeone2f34482021-03-16 10:49:09 +09004961 fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE;
4962 break;
4963 }
4964 case FS_VOLUME_INFORMATION:
4965 {
4966 struct filesystem_vol_info *info;
4967 size_t sz;
Namjae Jeon5d2f0b12021-10-31 09:53:50 +09004968 unsigned int serial_crc = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09004969
4970 info = (struct filesystem_vol_info *)(rsp->Buffer);
4971 info->VolumeCreationTime = 0;
Namjae Jeon5d2f0b12021-10-31 09:53:50 +09004972 serial_crc = crc32_le(serial_crc, share->name,
4973 strlen(share->name));
4974 serial_crc = crc32_le(serial_crc, share->path,
4975 strlen(share->path));
4976 serial_crc = crc32_le(serial_crc, ksmbd_netbios_name(),
4977 strlen(ksmbd_netbios_name()));
Namjae Jeone2f34482021-03-16 10:49:09 +09004978 /* Taking dummy value of serial number*/
Namjae Jeon5d2f0b12021-10-31 09:53:50 +09004979 info->SerialNumber = cpu_to_le32(serial_crc);
Namjae Jeone2f34482021-03-16 10:49:09 +09004980 len = smbConvertToUTF16((__le16 *)info->VolumeLabel,
4981 share->name, PATH_MAX,
4982 conn->local_nls, 0);
4983 len = len * 2;
4984 info->VolumeLabelSize = cpu_to_le32(len);
4985 info->Reserved = 0;
4986 sz = sizeof(struct filesystem_vol_info) - 2 + len;
4987 rsp->OutputBufferLength = cpu_to_le32(sz);
Namjae Jeoncb451722021-11-03 08:08:44 +09004988 inc_rfc1001_len(work->response_buf, sz);
Namjae Jeone2f34482021-03-16 10:49:09 +09004989 fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE;
4990 break;
4991 }
4992 case FS_SIZE_INFORMATION:
4993 {
4994 struct filesystem_info *info;
Namjae Jeone2f34482021-03-16 10:49:09 +09004995
4996 info = (struct filesystem_info *)(rsp->Buffer);
Namjae Jeone2f34482021-03-16 10:49:09 +09004997 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
4998 info->FreeAllocationUnits = cpu_to_le64(stfs.f_bfree);
Namjae Jeonee81cae2021-06-26 22:32:34 +09004999 info->SectorsPerAllocationUnit = cpu_to_le32(1);
5000 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
Namjae Jeone2f34482021-03-16 10:49:09 +09005001 rsp->OutputBufferLength = cpu_to_le32(24);
Namjae Jeoncb451722021-11-03 08:08:44 +09005002 inc_rfc1001_len(work->response_buf, 24);
Namjae Jeone2f34482021-03-16 10:49:09 +09005003 fs_infoclass_size = FS_SIZE_INFORMATION_SIZE;
5004 break;
5005 }
5006 case FS_FULL_SIZE_INFORMATION:
5007 {
5008 struct smb2_fs_full_size_info *info;
Namjae Jeone2f34482021-03-16 10:49:09 +09005009
5010 info = (struct smb2_fs_full_size_info *)(rsp->Buffer);
Namjae Jeone2f34482021-03-16 10:49:09 +09005011 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
5012 info->CallerAvailableAllocationUnits =
5013 cpu_to_le64(stfs.f_bavail);
5014 info->ActualAvailableAllocationUnits =
5015 cpu_to_le64(stfs.f_bfree);
Namjae Jeonee81cae2021-06-26 22:32:34 +09005016 info->SectorsPerAllocationUnit = cpu_to_le32(1);
5017 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
Namjae Jeone2f34482021-03-16 10:49:09 +09005018 rsp->OutputBufferLength = cpu_to_le32(32);
Namjae Jeoncb451722021-11-03 08:08:44 +09005019 inc_rfc1001_len(work->response_buf, 32);
Namjae Jeone2f34482021-03-16 10:49:09 +09005020 fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE;
5021 break;
5022 }
5023 case FS_OBJECT_ID_INFORMATION:
5024 {
5025 struct object_id_info *info;
5026
5027 info = (struct object_id_info *)(rsp->Buffer);
5028
5029 if (!user_guest(sess->user))
5030 memcpy(info->objid, user_passkey(sess->user), 16);
5031 else
5032 memset(info->objid, 0, 16);
5033
5034 info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC);
5035 info->extended_info.version = cpu_to_le32(1);
5036 info->extended_info.release = cpu_to_le32(1);
5037 info->extended_info.rel_date = 0;
Namjae Jeon64b39f42021-03-30 14:25:35 +09005038 memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0"));
Namjae Jeone2f34482021-03-16 10:49:09 +09005039 rsp->OutputBufferLength = cpu_to_le32(64);
Namjae Jeoncb451722021-11-03 08:08:44 +09005040 inc_rfc1001_len(work->response_buf, 64);
Namjae Jeone2f34482021-03-16 10:49:09 +09005041 fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE;
5042 break;
5043 }
5044 case FS_SECTOR_SIZE_INFORMATION:
5045 {
5046 struct smb3_fs_ss_info *info;
Namjae Jeon02655a72022-04-13 10:01:36 +09005047 unsigned int sector_size =
5048 min_t(unsigned int, path.mnt->mnt_sb->s_blocksize, 4096);
Namjae Jeone2f34482021-03-16 10:49:09 +09005049
5050 info = (struct smb3_fs_ss_info *)(rsp->Buffer);
Namjae Jeone2f34482021-03-16 10:49:09 +09005051
Namjae Jeon02655a72022-04-13 10:01:36 +09005052 info->LogicalBytesPerSector = cpu_to_le32(sector_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09005053 info->PhysicalBytesPerSectorForAtomicity =
Namjae Jeon02655a72022-04-13 10:01:36 +09005054 cpu_to_le32(sector_size);
5055 info->PhysicalBytesPerSectorForPerf = cpu_to_le32(sector_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09005056 info->FSEffPhysicalBytesPerSectorForAtomicity =
Namjae Jeon02655a72022-04-13 10:01:36 +09005057 cpu_to_le32(sector_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09005058 info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE |
5059 SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE);
5060 info->ByteOffsetForSectorAlignment = 0;
5061 info->ByteOffsetForPartitionAlignment = 0;
5062 rsp->OutputBufferLength = cpu_to_le32(28);
Namjae Jeoncb451722021-11-03 08:08:44 +09005063 inc_rfc1001_len(work->response_buf, 28);
Namjae Jeone2f34482021-03-16 10:49:09 +09005064 fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE;
5065 break;
5066 }
5067 case FS_CONTROL_INFORMATION:
5068 {
5069 /*
5070 * TODO : The current implementation is based on
5071 * test result with win7(NTFS) server. It's need to
5072 * modify this to get valid Quota values
5073 * from Linux kernel
5074 */
5075 struct smb2_fs_control_info *info;
5076
5077 info = (struct smb2_fs_control_info *)(rsp->Buffer);
5078 info->FreeSpaceStartFiltering = 0;
5079 info->FreeSpaceThreshold = 0;
5080 info->FreeSpaceStopFiltering = 0;
5081 info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID);
5082 info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID);
5083 info->Padding = 0;
5084 rsp->OutputBufferLength = cpu_to_le32(48);
Namjae Jeoncb451722021-11-03 08:08:44 +09005085 inc_rfc1001_len(work->response_buf, 48);
Namjae Jeone2f34482021-03-16 10:49:09 +09005086 fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE;
5087 break;
5088 }
5089 case FS_POSIX_INFORMATION:
5090 {
5091 struct filesystem_posix_info *info;
Namjae Jeone2f34482021-03-16 10:49:09 +09005092
5093 if (!work->tcon->posix_extensions) {
Namjae Jeonbde16942021-06-28 15:23:19 +09005094 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09005095 rc = -EOPNOTSUPP;
5096 } else {
5097 info = (struct filesystem_posix_info *)(rsp->Buffer);
Namjae Jeonee81cae2021-06-26 22:32:34 +09005098 info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize);
Namjae Jeone2f34482021-03-16 10:49:09 +09005099 info->BlockSize = cpu_to_le32(stfs.f_bsize);
5100 info->TotalBlocks = cpu_to_le64(stfs.f_blocks);
5101 info->BlocksAvail = cpu_to_le64(stfs.f_bfree);
5102 info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail);
5103 info->TotalFileNodes = cpu_to_le64(stfs.f_files);
5104 info->FreeFileNodes = cpu_to_le64(stfs.f_ffree);
5105 rsp->OutputBufferLength = cpu_to_le32(56);
Namjae Jeoncb451722021-11-03 08:08:44 +09005106 inc_rfc1001_len(work->response_buf, 56);
Namjae Jeone2f34482021-03-16 10:49:09 +09005107 fs_infoclass_size = FS_POSIX_INFORMATION_SIZE;
5108 }
5109 break;
5110 }
5111 default:
5112 path_put(&path);
5113 return -EOPNOTSUPP;
5114 }
5115 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
Namjae Jeoncb451722021-11-03 08:08:44 +09005116 rsp, work->response_buf,
Namjae Jeone2f34482021-03-16 10:49:09 +09005117 fs_infoclass_size);
5118 path_put(&path);
5119 return rc;
5120}
5121
5122static int smb2_get_info_sec(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09005123 struct smb2_query_info_req *req,
Namjae Jeoncb451722021-11-03 08:08:44 +09005124 struct smb2_query_info_rsp *rsp)
Namjae Jeone2f34482021-03-16 10:49:09 +09005125{
5126 struct ksmbd_file *fp;
Hyunchul Lee465d7202021-07-03 12:10:36 +09005127 struct user_namespace *user_ns;
Namjae Jeone2f34482021-03-16 10:49:09 +09005128 struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL;
5129 struct smb_fattr fattr = {{0}};
5130 struct inode *inode;
Namjae Jeon8f054112022-08-02 07:28:51 +09005131 __u32 secdesclen = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09005132 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
5133 int addition_info = le32_to_cpu(req->AdditionalInformation);
Namjae Jeon8f054112022-08-02 07:28:51 +09005134 int rc = 0, ppntsd_size = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09005135
Namjae Jeone294f782021-06-28 15:26:37 +09005136 if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO |
5137 PROTECTED_DACL_SECINFO |
5138 UNPROTECTED_DACL_SECINFO)) {
Namjae Jeon8e537d12021-11-21 07:48:45 +09005139 ksmbd_debug(SMB, "Unsupported addition info: 0x%x)\n",
Namjae Jeone294f782021-06-28 15:26:37 +09005140 addition_info);
Sebastian Gottschallced2b262021-04-27 15:33:54 +09005141
5142 pntsd->revision = cpu_to_le16(1);
5143 pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED);
5144 pntsd->osidoffset = 0;
5145 pntsd->gsidoffset = 0;
5146 pntsd->sacloffset = 0;
5147 pntsd->dacloffset = 0;
5148
5149 secdesclen = sizeof(struct smb_ntsd);
5150 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
Namjae Jeoncb451722021-11-03 08:08:44 +09005151 inc_rfc1001_len(work->response_buf, secdesclen);
Sebastian Gottschallced2b262021-04-27 15:33:54 +09005152
5153 return 0;
5154 }
5155
Namjae Jeone2f34482021-03-16 10:49:09 +09005156 if (work->next_smb2_rcv_hdr_off) {
Paulo Alcantara2d004c62022-03-21 13:08:26 -03005157 if (!has_file_id(req->VolatileFileId)) {
Namjae Jeon38673692021-07-08 12:32:27 +09005158 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09005159 work->compound_fid);
Namjae Jeone2f34482021-03-16 10:49:09 +09005160 id = work->compound_fid;
5161 pid = work->compound_pfid;
5162 }
5163 }
5164
Namjae Jeon38673692021-07-08 12:32:27 +09005165 if (!has_file_id(id)) {
Paulo Alcantara2d004c62022-03-21 13:08:26 -03005166 id = req->VolatileFileId;
5167 pid = req->PersistentFileId;
Namjae Jeone2f34482021-03-16 10:49:09 +09005168 }
5169
5170 fp = ksmbd_lookup_fd_slow(work, id, pid);
5171 if (!fp)
5172 return -ENOENT;
5173
Hyunchul Lee465d7202021-07-03 12:10:36 +09005174 user_ns = file_mnt_user_ns(fp->filp);
Namjae Jeonab0b2632021-06-29 09:20:13 +09005175 inode = file_inode(fp->filp);
Christian Brauner43205ca2021-08-23 17:13:50 +02005176 ksmbd_acls_fattr(&fattr, user_ns, inode);
Namjae Jeone2f34482021-03-16 10:49:09 +09005177
5178 if (test_share_config_flag(work->tcon->share_conf,
Namjae Jeon64b39f42021-03-30 14:25:35 +09005179 KSMBD_SHARE_FLAG_ACL_XATTR))
Namjae Jeon8f054112022-08-02 07:28:51 +09005180 ppntsd_size = ksmbd_vfs_get_sd_xattr(work->conn, user_ns,
5181 fp->filp->f_path.dentry,
5182 &ppntsd);
Namjae Jeone2f34482021-03-16 10:49:09 +09005183
Namjae Jeon8f054112022-08-02 07:28:51 +09005184 /* Check if sd buffer size exceeds response buffer size */
5185 if (smb2_resp_buf_len(work, 8) > ppntsd_size)
5186 rc = build_sec_desc(user_ns, pntsd, ppntsd, ppntsd_size,
5187 addition_info, &secdesclen, &fattr);
Namjae Jeone2f34482021-03-16 10:49:09 +09005188 posix_acl_release(fattr.cf_acls);
5189 posix_acl_release(fattr.cf_dacls);
5190 kfree(ppntsd);
5191 ksmbd_fd_put(work, fp);
5192 if (rc)
5193 return rc;
5194
5195 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
Namjae Jeoncb451722021-11-03 08:08:44 +09005196 inc_rfc1001_len(work->response_buf, secdesclen);
Namjae Jeone2f34482021-03-16 10:49:09 +09005197 return 0;
5198}
5199
5200/**
5201 * smb2_query_info() - handler for smb2 query info command
5202 * @work: smb work containing query info request buffer
5203 *
5204 * Return: 0 on success, otherwise error
5205 */
5206int smb2_query_info(struct ksmbd_work *work)
5207{
5208 struct smb2_query_info_req *req;
Namjae Jeoncb451722021-11-03 08:08:44 +09005209 struct smb2_query_info_rsp *rsp;
Namjae Jeone2f34482021-03-16 10:49:09 +09005210 int rc = 0;
5211
Namjae Jeone2f34482021-03-16 10:49:09 +09005212 WORK_BUFFERS(work, req, rsp);
5213
5214 ksmbd_debug(SMB, "GOT query info request\n");
5215
5216 switch (req->InfoType) {
5217 case SMB2_O_INFO_FILE:
5218 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
Namjae Jeoncb451722021-11-03 08:08:44 +09005219 rc = smb2_get_info_file(work, req, rsp);
Namjae Jeone2f34482021-03-16 10:49:09 +09005220 break;
5221 case SMB2_O_INFO_FILESYSTEM:
5222 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n");
Namjae Jeoncb451722021-11-03 08:08:44 +09005223 rc = smb2_get_info_filesystem(work, req, rsp);
Namjae Jeone2f34482021-03-16 10:49:09 +09005224 break;
5225 case SMB2_O_INFO_SECURITY:
5226 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
Namjae Jeoncb451722021-11-03 08:08:44 +09005227 rc = smb2_get_info_sec(work, req, rsp);
Namjae Jeone2f34482021-03-16 10:49:09 +09005228 break;
5229 default:
5230 ksmbd_debug(SMB, "InfoType %d not supported yet\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09005231 req->InfoType);
Namjae Jeone2f34482021-03-16 10:49:09 +09005232 rc = -EOPNOTSUPP;
5233 }
5234
5235 if (rc < 0) {
5236 if (rc == -EACCES)
5237 rsp->hdr.Status = STATUS_ACCESS_DENIED;
5238 else if (rc == -ENOENT)
5239 rsp->hdr.Status = STATUS_FILE_CLOSED;
5240 else if (rc == -EIO)
5241 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
5242 else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0)
5243 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
5244 smb2_set_err_rsp(work);
5245
5246 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09005247 rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09005248 return rc;
5249 }
5250 rsp->StructureSize = cpu_to_le16(9);
5251 rsp->OutputBufferOffset = cpu_to_le16(72);
Namjae Jeoncb451722021-11-03 08:08:44 +09005252 inc_rfc1001_len(work->response_buf, 8);
Namjae Jeone2f34482021-03-16 10:49:09 +09005253 return 0;
5254}
5255
5256/**
5257 * smb2_close_pipe() - handler for closing IPC pipe
5258 * @work: smb work containing close request buffer
5259 *
5260 * Return: 0
5261 */
5262static noinline int smb2_close_pipe(struct ksmbd_work *work)
5263{
Namjae Jeon64b39f42021-03-30 14:25:35 +09005264 u64 id;
Namjae Jeoncb451722021-11-03 08:08:44 +09005265 struct smb2_close_req *req = smb2_get_msg(work->request_buf);
5266 struct smb2_close_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09005267
Paulo Alcantara2d004c62022-03-21 13:08:26 -03005268 id = req->VolatileFileId;
Namjae Jeone2f34482021-03-16 10:49:09 +09005269 ksmbd_session_rpc_close(work->sess, id);
5270
5271 rsp->StructureSize = cpu_to_le16(60);
5272 rsp->Flags = 0;
5273 rsp->Reserved = 0;
5274 rsp->CreationTime = 0;
5275 rsp->LastAccessTime = 0;
5276 rsp->LastWriteTime = 0;
5277 rsp->ChangeTime = 0;
5278 rsp->AllocationSize = 0;
5279 rsp->EndOfFile = 0;
5280 rsp->Attributes = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09005281 inc_rfc1001_len(work->response_buf, 60);
Namjae Jeone2f34482021-03-16 10:49:09 +09005282 return 0;
5283}
5284
5285/**
5286 * smb2_close() - handler for smb2 close file command
5287 * @work: smb work containing close request buffer
5288 *
5289 * Return: 0
5290 */
5291int smb2_close(struct ksmbd_work *work)
5292{
Namjae Jeon38673692021-07-08 12:32:27 +09005293 u64 volatile_id = KSMBD_NO_FID;
Namjae Jeon64b39f42021-03-30 14:25:35 +09005294 u64 sess_id;
Namjae Jeone2f34482021-03-16 10:49:09 +09005295 struct smb2_close_req *req;
5296 struct smb2_close_rsp *rsp;
Namjae Jeone2f34482021-03-16 10:49:09 +09005297 struct ksmbd_conn *conn = work->conn;
5298 struct ksmbd_file *fp;
5299 struct inode *inode;
5300 u64 time;
5301 int err = 0;
5302
Namjae Jeone2f34482021-03-16 10:49:09 +09005303 WORK_BUFFERS(work, req, rsp);
5304
5305 if (test_share_config_flag(work->tcon->share_conf,
5306 KSMBD_SHARE_FLAG_PIPE)) {
5307 ksmbd_debug(SMB, "IPC pipe close request\n");
5308 return smb2_close_pipe(work);
5309 }
5310
5311 sess_id = le64_to_cpu(req->hdr.SessionId);
5312 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5313 sess_id = work->compound_sid;
5314
5315 work->compound_sid = 0;
Namjae Jeon64b39f42021-03-30 14:25:35 +09005316 if (check_session_id(conn, sess_id)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09005317 work->compound_sid = sess_id;
Namjae Jeon64b39f42021-03-30 14:25:35 +09005318 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09005319 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
5320 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5321 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
5322 err = -EBADF;
5323 goto out;
5324 }
5325
5326 if (work->next_smb2_rcv_hdr_off &&
Paulo Alcantara2d004c62022-03-21 13:08:26 -03005327 !has_file_id(req->VolatileFileId)) {
Namjae Jeon38673692021-07-08 12:32:27 +09005328 if (!has_file_id(work->compound_fid)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09005329 /* file already closed, return FILE_CLOSED */
5330 ksmbd_debug(SMB, "file already closed\n");
5331 rsp->hdr.Status = STATUS_FILE_CLOSED;
5332 err = -EBADF;
5333 goto out;
5334 } else {
Namjae Jeon38673692021-07-08 12:32:27 +09005335 ksmbd_debug(SMB,
5336 "Compound request set FID = %llu:%llu\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09005337 work->compound_fid,
5338 work->compound_pfid);
Namjae Jeone2f34482021-03-16 10:49:09 +09005339 volatile_id = work->compound_fid;
5340
5341 /* file closed, stored id is not valid anymore */
5342 work->compound_fid = KSMBD_NO_FID;
5343 work->compound_pfid = KSMBD_NO_FID;
5344 }
5345 } else {
Paulo Alcantara2d004c62022-03-21 13:08:26 -03005346 volatile_id = req->VolatileFileId;
Namjae Jeone2f34482021-03-16 10:49:09 +09005347 }
Namjae Jeon38673692021-07-08 12:32:27 +09005348 ksmbd_debug(SMB, "volatile_id = %llu\n", volatile_id);
Namjae Jeone2f34482021-03-16 10:49:09 +09005349
5350 rsp->StructureSize = cpu_to_le16(60);
5351 rsp->Reserved = 0;
5352
5353 if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) {
5354 fp = ksmbd_lookup_fd_fast(work, volatile_id);
5355 if (!fp) {
5356 err = -ENOENT;
5357 goto out;
5358 }
5359
Namjae Jeonab0b2632021-06-29 09:20:13 +09005360 inode = file_inode(fp->filp);
Namjae Jeone2f34482021-03-16 10:49:09 +09005361 rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
5362 rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 :
5363 cpu_to_le64(inode->i_blocks << 9);
5364 rsp->EndOfFile = cpu_to_le64(inode->i_size);
5365 rsp->Attributes = fp->f_ci->m_fattr;
5366 rsp->CreationTime = cpu_to_le64(fp->create_time);
5367 time = ksmbd_UnixTimeToNT(inode->i_atime);
5368 rsp->LastAccessTime = cpu_to_le64(time);
5369 time = ksmbd_UnixTimeToNT(inode->i_mtime);
5370 rsp->LastWriteTime = cpu_to_le64(time);
5371 time = ksmbd_UnixTimeToNT(inode->i_ctime);
5372 rsp->ChangeTime = cpu_to_le64(time);
5373 ksmbd_fd_put(work, fp);
5374 } else {
5375 rsp->Flags = 0;
5376 rsp->AllocationSize = 0;
5377 rsp->EndOfFile = 0;
5378 rsp->Attributes = 0;
5379 rsp->CreationTime = 0;
5380 rsp->LastAccessTime = 0;
5381 rsp->LastWriteTime = 0;
5382 rsp->ChangeTime = 0;
5383 }
5384
5385 err = ksmbd_close_fd(work, volatile_id);
5386out:
5387 if (err) {
5388 if (rsp->hdr.Status == 0)
5389 rsp->hdr.Status = STATUS_FILE_CLOSED;
5390 smb2_set_err_rsp(work);
5391 } else {
Namjae Jeoncb451722021-11-03 08:08:44 +09005392 inc_rfc1001_len(work->response_buf, 60);
Namjae Jeone2f34482021-03-16 10:49:09 +09005393 }
5394
5395 return 0;
5396}
5397
5398/**
5399 * smb2_echo() - handler for smb2 echo(ping) command
5400 * @work: smb work containing echo request buffer
5401 *
5402 * Return: 0
5403 */
5404int smb2_echo(struct ksmbd_work *work)
5405{
Namjae Jeoncb451722021-11-03 08:08:44 +09005406 struct smb2_echo_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09005407
5408 rsp->StructureSize = cpu_to_le16(4);
5409 rsp->Reserved = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09005410 inc_rfc1001_len(work->response_buf, 4);
Namjae Jeone2f34482021-03-16 10:49:09 +09005411 return 0;
5412}
5413
Christian Braunerda1e7ad2021-08-23 17:13:47 +02005414static int smb2_rename(struct ksmbd_work *work,
5415 struct ksmbd_file *fp,
5416 struct user_namespace *user_ns,
Namjae Jeon070fb212021-05-26 17:57:12 +09005417 struct smb2_file_rename_info *file_info,
5418 struct nls_table *local_nls)
Namjae Jeone2f34482021-03-16 10:49:09 +09005419{
5420 struct ksmbd_share_config *share = fp->tcon->share_conf;
5421 char *new_name = NULL, *abs_oldname = NULL, *old_name = NULL;
5422 char *pathname = NULL;
5423 struct path path;
5424 bool file_present = true;
5425 int rc;
5426
5427 ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n");
5428 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5429 if (!pathname)
5430 return -ENOMEM;
5431
Al Viro2f5930c2022-01-30 19:43:00 -05005432 abs_oldname = file_path(fp->filp, pathname, PATH_MAX);
Namjae Jeone2f34482021-03-16 10:49:09 +09005433 if (IS_ERR(abs_oldname)) {
5434 rc = -EINVAL;
5435 goto out;
5436 }
5437 old_name = strrchr(abs_oldname, '/');
Namjae Jeon64b39f42021-03-30 14:25:35 +09005438 if (old_name && old_name[1] != '\0') {
Namjae Jeone2f34482021-03-16 10:49:09 +09005439 old_name++;
Namjae Jeon64b39f42021-03-30 14:25:35 +09005440 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09005441 ksmbd_debug(SMB, "can't get last component in path %s\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09005442 abs_oldname);
Namjae Jeone2f34482021-03-16 10:49:09 +09005443 rc = -ENOENT;
5444 goto out;
5445 }
5446
Marios Makassikis80917f12021-12-01 21:41:19 +01005447 new_name = smb2_get_name(file_info->FileName,
Namjae Jeone2f34482021-03-16 10:49:09 +09005448 le32_to_cpu(file_info->FileNameLength),
5449 local_nls);
5450 if (IS_ERR(new_name)) {
5451 rc = PTR_ERR(new_name);
5452 goto out;
5453 }
5454
5455 if (strchr(new_name, ':')) {
5456 int s_type;
5457 char *xattr_stream_name, *stream_name = NULL;
5458 size_t xattr_stream_size;
5459 int len;
5460
5461 rc = parse_stream_name(new_name, &stream_name, &s_type);
5462 if (rc < 0)
5463 goto out;
5464
5465 len = strlen(new_name);
Hyunchul Lee265fd192021-09-25 00:06:16 +09005466 if (len > 0 && new_name[len - 1] != '/') {
Namjae Jeonbde16942021-06-28 15:23:19 +09005467 pr_err("not allow base filename in rename\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09005468 rc = -ESHARE;
5469 goto out;
5470 }
5471
5472 rc = ksmbd_vfs_xattr_stream_name(stream_name,
5473 &xattr_stream_name,
5474 &xattr_stream_size,
5475 s_type);
5476 if (rc)
5477 goto out;
5478
Christian Braunerda1e7ad2021-08-23 17:13:47 +02005479 rc = ksmbd_vfs_setxattr(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09005480 fp->filp->f_path.dentry,
Namjae Jeone2f34482021-03-16 10:49:09 +09005481 xattr_stream_name,
5482 NULL, 0, 0);
5483 if (rc < 0) {
Namjae Jeonbde16942021-06-28 15:23:19 +09005484 pr_err("failed to store stream name in xattr: %d\n",
5485 rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09005486 rc = -EINVAL;
5487 goto out;
5488 }
5489
5490 goto out;
5491 }
5492
5493 ksmbd_debug(SMB, "new name %s\n", new_name);
Hyunchul Lee265fd192021-09-25 00:06:16 +09005494 rc = ksmbd_vfs_kern_path(work, new_name, LOOKUP_NO_SYMLINKS, &path, 1);
5495 if (rc) {
5496 if (rc != -ENOENT)
5497 goto out;
Namjae Jeone2f34482021-03-16 10:49:09 +09005498 file_present = false;
Hyunchul Lee265fd192021-09-25 00:06:16 +09005499 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09005500 path_put(&path);
Hyunchul Lee265fd192021-09-25 00:06:16 +09005501 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005502
5503 if (ksmbd_share_veto_filename(share, new_name)) {
5504 rc = -ENOENT;
5505 ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name);
5506 goto out;
5507 }
5508
5509 if (file_info->ReplaceIfExists) {
5510 if (file_present) {
5511 rc = ksmbd_vfs_remove_file(work, new_name);
5512 if (rc) {
5513 if (rc != -ENOTEMPTY)
5514 rc = -EINVAL;
5515 ksmbd_debug(SMB, "cannot delete %s, rc %d\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09005516 new_name, rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09005517 goto out;
5518 }
5519 }
5520 } else {
5521 if (file_present &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09005522 strncmp(old_name, path.dentry->d_name.name, strlen(old_name))) {
Namjae Jeone2f34482021-03-16 10:49:09 +09005523 rc = -EEXIST;
5524 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09005525 "cannot rename already existing file\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09005526 goto out;
5527 }
5528 }
5529
5530 rc = ksmbd_vfs_fp_rename(work, fp, new_name);
5531out:
5532 kfree(pathname);
5533 if (!IS_ERR(new_name))
Marios Makassikis915f5702021-04-13 13:25:57 +09005534 kfree(new_name);
Namjae Jeone2f34482021-03-16 10:49:09 +09005535 return rc;
5536}
5537
Namjae Jeone2f34482021-03-16 10:49:09 +09005538static int smb2_create_link(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09005539 struct ksmbd_share_config *share,
5540 struct smb2_file_link_info *file_info,
Namjae Jeon9496e262021-09-29 15:41:48 +09005541 unsigned int buf_len, struct file *filp,
Namjae Jeon070fb212021-05-26 17:57:12 +09005542 struct nls_table *local_nls)
Namjae Jeone2f34482021-03-16 10:49:09 +09005543{
5544 char *link_name = NULL, *target_name = NULL, *pathname = NULL;
5545 struct path path;
5546 bool file_present = true;
5547 int rc;
5548
Namjae Jeon9496e262021-09-29 15:41:48 +09005549 if (buf_len < (u64)sizeof(struct smb2_file_link_info) +
5550 le32_to_cpu(file_info->FileNameLength))
5551 return -EINVAL;
5552
Namjae Jeone2f34482021-03-16 10:49:09 +09005553 ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n");
5554 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5555 if (!pathname)
5556 return -ENOMEM;
5557
Marios Makassikis80917f12021-12-01 21:41:19 +01005558 link_name = smb2_get_name(file_info->FileName,
Namjae Jeone2f34482021-03-16 10:49:09 +09005559 le32_to_cpu(file_info->FileNameLength),
5560 local_nls);
5561 if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) {
5562 rc = -EINVAL;
5563 goto out;
5564 }
5565
5566 ksmbd_debug(SMB, "link name is %s\n", link_name);
Al Viro2f5930c2022-01-30 19:43:00 -05005567 target_name = file_path(filp, pathname, PATH_MAX);
Namjae Jeone2f34482021-03-16 10:49:09 +09005568 if (IS_ERR(target_name)) {
5569 rc = -EINVAL;
5570 goto out;
5571 }
5572
5573 ksmbd_debug(SMB, "target name is %s\n", target_name);
Hyunchul Lee265fd192021-09-25 00:06:16 +09005574 rc = ksmbd_vfs_kern_path(work, link_name, LOOKUP_NO_SYMLINKS, &path, 0);
5575 if (rc) {
5576 if (rc != -ENOENT)
5577 goto out;
Namjae Jeone2f34482021-03-16 10:49:09 +09005578 file_present = false;
Hyunchul Lee265fd192021-09-25 00:06:16 +09005579 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09005580 path_put(&path);
Hyunchul Lee265fd192021-09-25 00:06:16 +09005581 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005582
5583 if (file_info->ReplaceIfExists) {
5584 if (file_present) {
5585 rc = ksmbd_vfs_remove_file(work, link_name);
5586 if (rc) {
5587 rc = -EINVAL;
5588 ksmbd_debug(SMB, "cannot delete %s\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09005589 link_name);
Namjae Jeone2f34482021-03-16 10:49:09 +09005590 goto out;
5591 }
5592 }
5593 } else {
5594 if (file_present) {
5595 rc = -EEXIST;
5596 ksmbd_debug(SMB, "link already exists\n");
5597 goto out;
5598 }
5599 }
5600
5601 rc = ksmbd_vfs_link(work, target_name, link_name);
5602 if (rc)
5603 rc = -EINVAL;
5604out:
5605 if (!IS_ERR(link_name))
Marios Makassikis915f5702021-04-13 13:25:57 +09005606 kfree(link_name);
Namjae Jeone2f34482021-03-16 10:49:09 +09005607 kfree(pathname);
5608 return rc;
5609}
5610
Namjae Jeon9496e262021-09-29 15:41:48 +09005611static int set_file_basic_info(struct ksmbd_file *fp,
5612 struct smb2_file_basic_info *file_info,
Namjae Jeon070fb212021-05-26 17:57:12 +09005613 struct ksmbd_share_config *share)
Namjae Jeone2f34482021-03-16 10:49:09 +09005614{
Namjae Jeone2f34482021-03-16 10:49:09 +09005615 struct iattr attrs;
Namjae Jeone2f34482021-03-16 10:49:09 +09005616 struct file *filp;
5617 struct inode *inode;
Hyunchul Lee465d7202021-07-03 12:10:36 +09005618 struct user_namespace *user_ns;
Namjae Jeon4ffd5262021-09-07 08:15:21 +09005619 int rc = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09005620
Marios Makassikis7adfd4f2021-04-27 15:30:22 +09005621 if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE))
Namjae Jeone2f34482021-03-16 10:49:09 +09005622 return -EACCES;
5623
Namjae Jeone2f34482021-03-16 10:49:09 +09005624 attrs.ia_valid = 0;
5625 filp = fp->filp;
5626 inode = file_inode(filp);
Hyunchul Lee465d7202021-07-03 12:10:36 +09005627 user_ns = file_mnt_user_ns(filp);
Namjae Jeone2f34482021-03-16 10:49:09 +09005628
5629 if (file_info->CreationTime)
5630 fp->create_time = le64_to_cpu(file_info->CreationTime);
5631
5632 if (file_info->LastAccessTime) {
5633 attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime);
5634 attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
5635 }
5636
Namjae Jeon64e78752021-10-03 13:19:00 +09005637 attrs.ia_valid |= ATTR_CTIME;
5638 if (file_info->ChangeTime)
Christian Braunerdb7fb6f2021-08-26 10:07:05 +09005639 attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime);
Namjae Jeon64e78752021-10-03 13:19:00 +09005640 else
5641 attrs.ia_ctime = inode->i_ctime;
Namjae Jeone2f34482021-03-16 10:49:09 +09005642
5643 if (file_info->LastWriteTime) {
5644 attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime);
5645 attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
5646 }
5647
5648 if (file_info->Attributes) {
5649 if (!S_ISDIR(inode->i_mode) &&
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09005650 file_info->Attributes & FILE_ATTRIBUTE_DIRECTORY_LE) {
Namjae Jeonbde16942021-06-28 15:23:19 +09005651 pr_err("can't change a file to a directory\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09005652 return -EINVAL;
5653 }
5654
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09005655 if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == FILE_ATTRIBUTE_NORMAL_LE))
Namjae Jeone2f34482021-03-16 10:49:09 +09005656 fp->f_ci->m_fattr = file_info->Attributes |
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09005657 (fp->f_ci->m_fattr & FILE_ATTRIBUTE_DIRECTORY_LE);
Namjae Jeone2f34482021-03-16 10:49:09 +09005658 }
5659
5660 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) &&
5661 (file_info->CreationTime || file_info->Attributes)) {
5662 struct xattr_dos_attrib da = {0};
5663
5664 da.version = 4;
5665 da.itime = fp->itime;
5666 da.create_time = fp->create_time;
5667 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
5668 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
5669 XATTR_DOSINFO_ITIME;
5670
Hyunchul Lee465d7202021-07-03 12:10:36 +09005671 rc = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09005672 filp->f_path.dentry, &da);
Namjae Jeone2f34482021-03-16 10:49:09 +09005673 if (rc)
5674 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09005675 "failed to restore file attribute in EA\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09005676 rc = 0;
5677 }
5678
Namjae Jeone2f34482021-03-16 10:49:09 +09005679 if (attrs.ia_valid) {
5680 struct dentry *dentry = filp->f_path.dentry;
5681 struct inode *inode = d_inode(dentry);
5682
5683 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
5684 return -EACCES;
5685
Namjae Jeone2f34482021-03-16 10:49:09 +09005686 inode_lock(inode);
Namjae Jeon64e78752021-10-03 13:19:00 +09005687 inode->i_ctime = attrs.ia_ctime;
5688 attrs.ia_valid &= ~ATTR_CTIME;
Hyunchul Lee465d7202021-07-03 12:10:36 +09005689 rc = notify_change(user_ns, dentry, &attrs, NULL);
Namjae Jeone2f34482021-03-16 10:49:09 +09005690 inode_unlock(inode);
5691 }
Christian Braunereb5784f2021-08-23 17:13:55 +02005692 return rc;
Namjae Jeone2f34482021-03-16 10:49:09 +09005693}
5694
5695static int set_file_allocation_info(struct ksmbd_work *work,
Namjae Jeon9496e262021-09-29 15:41:48 +09005696 struct ksmbd_file *fp,
5697 struct smb2_file_alloc_info *file_alloc_info)
Namjae Jeone2f34482021-03-16 10:49:09 +09005698{
5699 /*
5700 * TODO : It's working fine only when store dos attributes
5701 * is not yes. need to implement a logic which works
5702 * properly with any smb.conf option
5703 */
5704
Namjae Jeone2f34482021-03-16 10:49:09 +09005705 loff_t alloc_blks;
5706 struct inode *inode;
5707 int rc;
5708
Marios Makassikisa2996692021-04-27 15:29:01 +09005709 if (!(fp->daccess & FILE_WRITE_DATA_LE))
Namjae Jeone2f34482021-03-16 10:49:09 +09005710 return -EACCES;
5711
Namjae Jeone2f34482021-03-16 10:49:09 +09005712 alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9;
5713 inode = file_inode(fp->filp);
5714
5715 if (alloc_blks > inode->i_blocks) {
Namjae Jeone8c06192021-06-22 11:06:11 +09005716 smb_break_all_levII_oplock(work, fp, 1);
5717 rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
5718 alloc_blks * 512);
Namjae Jeone2f34482021-03-16 10:49:09 +09005719 if (rc && rc != -EOPNOTSUPP) {
Namjae Jeone8c06192021-06-22 11:06:11 +09005720 pr_err("vfs_fallocate is failed : %d\n", rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09005721 return rc;
5722 }
5723 } else if (alloc_blks < inode->i_blocks) {
5724 loff_t size;
5725
5726 /*
5727 * Allocation size could be smaller than original one
5728 * which means allocated blocks in file should be
5729 * deallocated. use truncate to cut out it, but inode
5730 * size is also updated with truncate offset.
5731 * inode size is retained by backup inode size.
5732 */
5733 size = i_size_read(inode);
Hyunchul Lee265fd192021-09-25 00:06:16 +09005734 rc = ksmbd_vfs_truncate(work, fp, alloc_blks * 512);
Namjae Jeone2f34482021-03-16 10:49:09 +09005735 if (rc) {
Namjae Jeon50f500b2022-02-24 11:03:41 +09005736 pr_err("truncate failed!, err %d\n", rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09005737 return rc;
5738 }
5739 if (size < alloc_blks * 512)
5740 i_size_write(inode, size);
5741 }
5742 return 0;
5743}
5744
Namjae Jeon64b39f42021-03-30 14:25:35 +09005745static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp,
Namjae Jeon9496e262021-09-29 15:41:48 +09005746 struct smb2_file_eof_info *file_eof_info)
Namjae Jeone2f34482021-03-16 10:49:09 +09005747{
Namjae Jeone2f34482021-03-16 10:49:09 +09005748 loff_t newsize;
5749 struct inode *inode;
5750 int rc;
5751
Marios Makassikisa2996692021-04-27 15:29:01 +09005752 if (!(fp->daccess & FILE_WRITE_DATA_LE))
Namjae Jeone2f34482021-03-16 10:49:09 +09005753 return -EACCES;
5754
Namjae Jeone2f34482021-03-16 10:49:09 +09005755 newsize = le64_to_cpu(file_eof_info->EndOfFile);
5756 inode = file_inode(fp->filp);
5757
5758 /*
5759 * If FILE_END_OF_FILE_INFORMATION of set_info_file is called
5760 * on FAT32 shared device, truncate execution time is too long
5761 * and network error could cause from windows client. because
5762 * truncate of some filesystem like FAT32 fill zero data in
5763 * truncated range.
5764 */
5765 if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) {
Namjae Jeon50f500b2022-02-24 11:03:41 +09005766 ksmbd_debug(SMB, "truncated to newsize %lld\n", newsize);
Hyunchul Lee265fd192021-09-25 00:06:16 +09005767 rc = ksmbd_vfs_truncate(work, fp, newsize);
Namjae Jeone2f34482021-03-16 10:49:09 +09005768 if (rc) {
Namjae Jeon50f500b2022-02-24 11:03:41 +09005769 ksmbd_debug(SMB, "truncate failed!, err %d\n", rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09005770 if (rc != -EAGAIN)
5771 rc = -EBADF;
5772 return rc;
5773 }
5774 }
5775 return 0;
5776}
5777
Namjae Jeon64b39f42021-03-30 14:25:35 +09005778static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp,
Namjae Jeon9496e262021-09-29 15:41:48 +09005779 struct smb2_file_rename_info *rename_info,
5780 unsigned int buf_len)
Namjae Jeone2f34482021-03-16 10:49:09 +09005781{
Christian Braunerda1e7ad2021-08-23 17:13:47 +02005782 struct user_namespace *user_ns;
Namjae Jeone2f34482021-03-16 10:49:09 +09005783 struct ksmbd_file *parent_fp;
Namjae Jeon12202c02021-06-29 09:23:56 +09005784 struct dentry *parent;
5785 struct dentry *dentry = fp->filp->f_path.dentry;
5786 int ret;
Namjae Jeone2f34482021-03-16 10:49:09 +09005787
5788 if (!(fp->daccess & FILE_DELETE_LE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09005789 pr_err("no right to delete : 0x%x\n", fp->daccess);
Namjae Jeone2f34482021-03-16 10:49:09 +09005790 return -EACCES;
5791 }
5792
Namjae Jeon9496e262021-09-29 15:41:48 +09005793 if (buf_len < (u64)sizeof(struct smb2_file_rename_info) +
5794 le32_to_cpu(rename_info->FileNameLength))
5795 return -EINVAL;
5796
Christian Braunerda1e7ad2021-08-23 17:13:47 +02005797 user_ns = file_mnt_user_ns(fp->filp);
Namjae Jeone2f34482021-03-16 10:49:09 +09005798 if (ksmbd_stream_fd(fp))
5799 goto next;
5800
Namjae Jeon12202c02021-06-29 09:23:56 +09005801 parent = dget_parent(dentry);
Christian Braunerda1e7ad2021-08-23 17:13:47 +02005802 ret = ksmbd_vfs_lock_parent(user_ns, parent, dentry);
Namjae Jeon12202c02021-06-29 09:23:56 +09005803 if (ret) {
5804 dput(parent);
5805 return ret;
5806 }
5807
5808 parent_fp = ksmbd_lookup_fd_inode(d_inode(parent));
5809 inode_unlock(d_inode(parent));
5810 dput(parent);
5811
Namjae Jeone2f34482021-03-16 10:49:09 +09005812 if (parent_fp) {
5813 if (parent_fp->daccess & FILE_DELETE_LE) {
Namjae Jeonbde16942021-06-28 15:23:19 +09005814 pr_err("parent dir is opened with delete access\n");
Namjae Jeon8510a042022-04-05 12:04:43 +09005815 ksmbd_fd_put(work, parent_fp);
Namjae Jeone2f34482021-03-16 10:49:09 +09005816 return -ESHARE;
5817 }
Namjae Jeon8510a042022-04-05 12:04:43 +09005818 ksmbd_fd_put(work, parent_fp);
Namjae Jeone2f34482021-03-16 10:49:09 +09005819 }
5820next:
Namjae Jeon9496e262021-09-29 15:41:48 +09005821 return smb2_rename(work, fp, user_ns, rename_info,
Namjae Jeonaf7c39d2022-07-25 13:36:52 +09005822 work->conn->local_nls);
Namjae Jeone2f34482021-03-16 10:49:09 +09005823}
5824
Namjae Jeon9496e262021-09-29 15:41:48 +09005825static int set_file_disposition_info(struct ksmbd_file *fp,
5826 struct smb2_file_disposition_info *file_info)
Namjae Jeone2f34482021-03-16 10:49:09 +09005827{
Namjae Jeone2f34482021-03-16 10:49:09 +09005828 struct inode *inode;
5829
5830 if (!(fp->daccess & FILE_DELETE_LE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09005831 pr_err("no right to delete : 0x%x\n", fp->daccess);
Namjae Jeone2f34482021-03-16 10:49:09 +09005832 return -EACCES;
5833 }
5834
5835 inode = file_inode(fp->filp);
Namjae Jeone2f34482021-03-16 10:49:09 +09005836 if (file_info->DeletePending) {
5837 if (S_ISDIR(inode->i_mode) &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09005838 ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY)
Namjae Jeone2f34482021-03-16 10:49:09 +09005839 return -EBUSY;
5840 ksmbd_set_inode_pending_delete(fp);
5841 } else {
5842 ksmbd_clear_inode_pending_delete(fp);
5843 }
5844 return 0;
5845}
5846
Namjae Jeon9496e262021-09-29 15:41:48 +09005847static int set_file_position_info(struct ksmbd_file *fp,
5848 struct smb2_file_pos_info *file_info)
Namjae Jeone2f34482021-03-16 10:49:09 +09005849{
Namjae Jeone2f34482021-03-16 10:49:09 +09005850 loff_t current_byte_offset;
Namjae Jeonee81cae2021-06-26 22:32:34 +09005851 unsigned long sector_size;
Namjae Jeone2f34482021-03-16 10:49:09 +09005852 struct inode *inode;
5853
5854 inode = file_inode(fp->filp);
Namjae Jeone2f34482021-03-16 10:49:09 +09005855 current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset);
Namjae Jeonee81cae2021-06-26 22:32:34 +09005856 sector_size = inode->i_sb->s_blocksize;
Namjae Jeone2f34482021-03-16 10:49:09 +09005857
5858 if (current_byte_offset < 0 ||
Namjae Jeon64b39f42021-03-30 14:25:35 +09005859 (fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE &&
5860 current_byte_offset & (sector_size - 1))) {
Namjae Jeonbde16942021-06-28 15:23:19 +09005861 pr_err("CurrentByteOffset is not valid : %llu\n",
5862 current_byte_offset);
Namjae Jeone2f34482021-03-16 10:49:09 +09005863 return -EINVAL;
5864 }
5865
5866 fp->filp->f_pos = current_byte_offset;
5867 return 0;
5868}
5869
Namjae Jeon9496e262021-09-29 15:41:48 +09005870static int set_file_mode_info(struct ksmbd_file *fp,
5871 struct smb2_file_mode_info *file_info)
Namjae Jeone2f34482021-03-16 10:49:09 +09005872{
Namjae Jeone2f34482021-03-16 10:49:09 +09005873 __le32 mode;
5874
Namjae Jeone2f34482021-03-16 10:49:09 +09005875 mode = file_info->Mode;
5876
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09005877 if ((mode & ~FILE_MODE_INFO_MASK)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09005878 pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode));
Namjae Jeone2f34482021-03-16 10:49:09 +09005879 return -EINVAL;
5880 }
5881
5882 /*
5883 * TODO : need to implement consideration for
5884 * FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT
5885 */
5886 ksmbd_vfs_set_fadvise(fp->filp, mode);
5887 fp->coption = mode;
5888 return 0;
5889}
5890
5891/**
5892 * smb2_set_info_file() - handler for smb2 set info command
5893 * @work: smb work containing set info command buffer
Hyunchul Lee95fa1ce2021-03-21 17:05:56 +09005894 * @fp: ksmbd_file pointer
Yang Li4bfd9ee2021-12-21 17:07:12 +08005895 * @req: request buffer pointer
Hyunchul Lee95fa1ce2021-03-21 17:05:56 +09005896 * @share: ksmbd_share_config pointer
Namjae Jeone2f34482021-03-16 10:49:09 +09005897 *
5898 * Return: 0 on success, otherwise error
5899 * TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH
5900 */
Namjae Jeon64b39f42021-03-30 14:25:35 +09005901static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
Namjae Jeon9496e262021-09-29 15:41:48 +09005902 struct smb2_set_info_req *req,
Namjae Jeon070fb212021-05-26 17:57:12 +09005903 struct ksmbd_share_config *share)
Namjae Jeone2f34482021-03-16 10:49:09 +09005904{
Namjae Jeon9496e262021-09-29 15:41:48 +09005905 unsigned int buf_len = le32_to_cpu(req->BufferLength);
5906
5907 switch (req->FileInfoClass) {
Namjae Jeone2f34482021-03-16 10:49:09 +09005908 case FILE_BASIC_INFORMATION:
Namjae Jeon9496e262021-09-29 15:41:48 +09005909 {
5910 if (buf_len < sizeof(struct smb2_file_basic_info))
5911 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09005912
Namjae Jeon9496e262021-09-29 15:41:48 +09005913 return set_file_basic_info(fp, (struct smb2_file_basic_info *)req->Buffer, share);
5914 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005915 case FILE_ALLOCATION_INFORMATION:
Namjae Jeon9496e262021-09-29 15:41:48 +09005916 {
5917 if (buf_len < sizeof(struct smb2_file_alloc_info))
5918 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09005919
Namjae Jeon9496e262021-09-29 15:41:48 +09005920 return set_file_allocation_info(work, fp,
5921 (struct smb2_file_alloc_info *)req->Buffer);
5922 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005923 case FILE_END_OF_FILE_INFORMATION:
Namjae Jeon9496e262021-09-29 15:41:48 +09005924 {
5925 if (buf_len < sizeof(struct smb2_file_eof_info))
5926 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09005927
Namjae Jeon9496e262021-09-29 15:41:48 +09005928 return set_end_of_file_info(work, fp,
5929 (struct smb2_file_eof_info *)req->Buffer);
5930 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005931 case FILE_RENAME_INFORMATION:
Namjae Jeon9496e262021-09-29 15:41:48 +09005932 {
Namjae Jeon64b39f42021-03-30 14:25:35 +09005933 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09005934 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09005935 "User does not have write permission\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09005936 return -EACCES;
5937 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005938
Namjae Jeon9496e262021-09-29 15:41:48 +09005939 if (buf_len < sizeof(struct smb2_file_rename_info))
5940 return -EINVAL;
5941
5942 return set_rename_info(work, fp,
5943 (struct smb2_file_rename_info *)req->Buffer,
5944 buf_len);
5945 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005946 case FILE_LINK_INFORMATION:
Namjae Jeon9496e262021-09-29 15:41:48 +09005947 {
5948 if (buf_len < sizeof(struct smb2_file_link_info))
5949 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09005950
Namjae Jeon9496e262021-09-29 15:41:48 +09005951 return smb2_create_link(work, work->tcon->share_conf,
5952 (struct smb2_file_link_info *)req->Buffer,
5953 buf_len, fp->filp,
Namjae Jeonaf7c39d2022-07-25 13:36:52 +09005954 work->conn->local_nls);
Namjae Jeon9496e262021-09-29 15:41:48 +09005955 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005956 case FILE_DISPOSITION_INFORMATION:
Namjae Jeon9496e262021-09-29 15:41:48 +09005957 {
Namjae Jeon64b39f42021-03-30 14:25:35 +09005958 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09005959 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09005960 "User does not have write permission\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09005961 return -EACCES;
5962 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005963
Namjae Jeon9496e262021-09-29 15:41:48 +09005964 if (buf_len < sizeof(struct smb2_file_disposition_info))
5965 return -EINVAL;
5966
5967 return set_file_disposition_info(fp,
5968 (struct smb2_file_disposition_info *)req->Buffer);
5969 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005970 case FILE_FULL_EA_INFORMATION:
5971 {
5972 if (!(fp->daccess & FILE_WRITE_EA_LE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09005973 pr_err("Not permitted to write ext attr: 0x%x\n",
5974 fp->daccess);
Namjae Jeone2f34482021-03-16 10:49:09 +09005975 return -EACCES;
5976 }
5977
Namjae Jeon9496e262021-09-29 15:41:48 +09005978 if (buf_len < sizeof(struct smb2_ea_info))
5979 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09005980
Namjae Jeon9496e262021-09-29 15:41:48 +09005981 return smb2_set_ea((struct smb2_ea_info *)req->Buffer,
5982 buf_len, &fp->filp->f_path);
5983 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005984 case FILE_POSITION_INFORMATION:
Namjae Jeon9496e262021-09-29 15:41:48 +09005985 {
5986 if (buf_len < sizeof(struct smb2_file_pos_info))
5987 return -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09005988
Namjae Jeon9496e262021-09-29 15:41:48 +09005989 return set_file_position_info(fp, (struct smb2_file_pos_info *)req->Buffer);
5990 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005991 case FILE_MODE_INFORMATION:
Namjae Jeon9496e262021-09-29 15:41:48 +09005992 {
5993 if (buf_len < sizeof(struct smb2_file_mode_info))
5994 return -EINVAL;
5995
5996 return set_file_mode_info(fp, (struct smb2_file_mode_info *)req->Buffer);
5997 }
Namjae Jeone2f34482021-03-16 10:49:09 +09005998 }
5999
Namjae Jeon9496e262021-09-29 15:41:48 +09006000 pr_err("Unimplemented Fileinfoclass :%d\n", req->FileInfoClass);
Namjae Jeone2f34482021-03-16 10:49:09 +09006001 return -EOPNOTSUPP;
6002}
6003
Namjae Jeon64b39f42021-03-30 14:25:35 +09006004static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info,
Namjae Jeon070fb212021-05-26 17:57:12 +09006005 char *buffer, int buf_len)
Namjae Jeone2f34482021-03-16 10:49:09 +09006006{
6007 struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer;
6008
6009 fp->saccess |= FILE_SHARE_DELETE_LE;
6010
Hyunchul Leeef24c962021-06-30 18:25:52 +09006011 return set_info_sec(fp->conn, fp->tcon, &fp->filp->f_path, pntsd,
Namjae Jeone2f34482021-03-16 10:49:09 +09006012 buf_len, false);
6013}
6014
6015/**
6016 * smb2_set_info() - handler for smb2 set info command handler
6017 * @work: smb work containing set info request buffer
6018 *
6019 * Return: 0 on success, otherwise error
6020 */
6021int smb2_set_info(struct ksmbd_work *work)
6022{
6023 struct smb2_set_info_req *req;
Namjae Jeoncb451722021-11-03 08:08:44 +09006024 struct smb2_set_info_rsp *rsp;
Namjae Jeone2f34482021-03-16 10:49:09 +09006025 struct ksmbd_file *fp;
6026 int rc = 0;
6027 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
6028
6029 ksmbd_debug(SMB, "Received set info request\n");
6030
Namjae Jeone2f34482021-03-16 10:49:09 +09006031 if (work->next_smb2_rcv_hdr_off) {
Namjae Jeon8a893312021-06-25 13:43:37 +09006032 req = ksmbd_req_buf_next(work);
6033 rsp = ksmbd_resp_buf_next(work);
Paulo Alcantara2d004c62022-03-21 13:08:26 -03006034 if (!has_file_id(req->VolatileFileId)) {
Namjae Jeon38673692021-07-08 12:32:27 +09006035 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09006036 work->compound_fid);
Namjae Jeone2f34482021-03-16 10:49:09 +09006037 id = work->compound_fid;
6038 pid = work->compound_pfid;
6039 }
6040 } else {
Namjae Jeoncb451722021-11-03 08:08:44 +09006041 req = smb2_get_msg(work->request_buf);
6042 rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09006043 }
6044
Namjae Jeon38673692021-07-08 12:32:27 +09006045 if (!has_file_id(id)) {
Paulo Alcantara2d004c62022-03-21 13:08:26 -03006046 id = req->VolatileFileId;
6047 pid = req->PersistentFileId;
Namjae Jeone2f34482021-03-16 10:49:09 +09006048 }
6049
6050 fp = ksmbd_lookup_fd_slow(work, id, pid);
6051 if (!fp) {
6052 ksmbd_debug(SMB, "Invalid id for close: %u\n", id);
6053 rc = -ENOENT;
6054 goto err_out;
6055 }
6056
6057 switch (req->InfoType) {
6058 case SMB2_O_INFO_FILE:
6059 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
Namjae Jeon9496e262021-09-29 15:41:48 +09006060 rc = smb2_set_info_file(work, fp, req, work->tcon->share_conf);
Namjae Jeone2f34482021-03-16 10:49:09 +09006061 break;
6062 case SMB2_O_INFO_SECURITY:
6063 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
Namjae Jeone70e3922021-08-21 23:26:01 +09006064 if (ksmbd_override_fsids(work)) {
6065 rc = -ENOMEM;
6066 goto err_out;
6067 }
Namjae Jeone2f34482021-03-16 10:49:09 +09006068 rc = smb2_set_info_sec(fp,
Namjae Jeon070fb212021-05-26 17:57:12 +09006069 le32_to_cpu(req->AdditionalInformation),
6070 req->Buffer,
6071 le32_to_cpu(req->BufferLength));
Namjae Jeone70e3922021-08-21 23:26:01 +09006072 ksmbd_revert_fsids(work);
Namjae Jeone2f34482021-03-16 10:49:09 +09006073 break;
6074 default:
6075 rc = -EOPNOTSUPP;
6076 }
6077
6078 if (rc < 0)
6079 goto err_out;
6080
6081 rsp->StructureSize = cpu_to_le16(2);
Namjae Jeoncb451722021-11-03 08:08:44 +09006082 inc_rfc1001_len(work->response_buf, 2);
Namjae Jeone2f34482021-03-16 10:49:09 +09006083 ksmbd_fd_put(work, fp);
6084 return 0;
6085
6086err_out:
Hyunchul Lee265fd192021-09-25 00:06:16 +09006087 if (rc == -EACCES || rc == -EPERM || rc == -EXDEV)
Namjae Jeone2f34482021-03-16 10:49:09 +09006088 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6089 else if (rc == -EINVAL)
6090 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6091 else if (rc == -ESHARE)
6092 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6093 else if (rc == -ENOENT)
6094 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
6095 else if (rc == -EBUSY || rc == -ENOTEMPTY)
6096 rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY;
6097 else if (rc == -EAGAIN)
6098 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
Namjae Jeonff1d5722021-04-13 13:18:10 +09006099 else if (rc == -EBADF || rc == -ESTALE)
Namjae Jeone2f34482021-03-16 10:49:09 +09006100 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6101 else if (rc == -EEXIST)
6102 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
6103 else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP)
6104 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
6105 smb2_set_err_rsp(work);
6106 ksmbd_fd_put(work, fp);
Namjae Jeon070fb212021-05-26 17:57:12 +09006107 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc);
Namjae Jeone2f34482021-03-16 10:49:09 +09006108 return rc;
6109}
6110
6111/**
6112 * smb2_read_pipe() - handler for smb2 read from IPC pipe
6113 * @work: smb work containing read IPC pipe command buffer
6114 *
6115 * Return: 0 on success, otherwise error
6116 */
6117static noinline int smb2_read_pipe(struct ksmbd_work *work)
6118{
6119 int nbytes = 0, err;
Namjae Jeon64b39f42021-03-30 14:25:35 +09006120 u64 id;
Namjae Jeone2f34482021-03-16 10:49:09 +09006121 struct ksmbd_rpc_command *rpc_resp;
Namjae Jeoncb451722021-11-03 08:08:44 +09006122 struct smb2_read_req *req = smb2_get_msg(work->request_buf);
6123 struct smb2_read_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09006124
Paulo Alcantara2d004c62022-03-21 13:08:26 -03006125 id = req->VolatileFileId;
Namjae Jeone2f34482021-03-16 10:49:09 +09006126
Namjae Jeoncb451722021-11-03 08:08:44 +09006127 inc_rfc1001_len(work->response_buf, 16);
Namjae Jeone2f34482021-03-16 10:49:09 +09006128 rpc_resp = ksmbd_rpc_read(work->sess, id);
6129 if (rpc_resp) {
6130 if (rpc_resp->flags != KSMBD_RPC_OK) {
6131 err = -EINVAL;
6132 goto out;
6133 }
6134
6135 work->aux_payload_buf =
Namjae Jeon79f6b112021-04-02 12:47:14 +09006136 kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO);
Namjae Jeone2f34482021-03-16 10:49:09 +09006137 if (!work->aux_payload_buf) {
6138 err = -ENOMEM;
6139 goto out;
6140 }
6141
6142 memcpy(work->aux_payload_buf, rpc_resp->payload,
Namjae Jeon070fb212021-05-26 17:57:12 +09006143 rpc_resp->payload_sz);
Namjae Jeone2f34482021-03-16 10:49:09 +09006144
6145 nbytes = rpc_resp->payload_sz;
Namjae Jeoncb451722021-11-03 08:08:44 +09006146 work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4;
Namjae Jeone2f34482021-03-16 10:49:09 +09006147 work->aux_payload_sz = nbytes;
Namjae Jeon79f6b112021-04-02 12:47:14 +09006148 kvfree(rpc_resp);
Namjae Jeone2f34482021-03-16 10:49:09 +09006149 }
6150
6151 rsp->StructureSize = cpu_to_le16(17);
6152 rsp->DataOffset = 80;
6153 rsp->Reserved = 0;
6154 rsp->DataLength = cpu_to_le32(nbytes);
6155 rsp->DataRemaining = 0;
Ronnie Sahlberg699230f2021-09-09 12:26:12 +09006156 rsp->Flags = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09006157 inc_rfc1001_len(work->response_buf, nbytes);
Namjae Jeone2f34482021-03-16 10:49:09 +09006158 return 0;
6159
6160out:
6161 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
6162 smb2_set_err_rsp(work);
Namjae Jeon79f6b112021-04-02 12:47:14 +09006163 kvfree(rpc_resp);
Namjae Jeone2f34482021-03-16 10:49:09 +09006164 return err;
6165}
6166
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006167static int smb2_set_remote_key_for_rdma(struct ksmbd_work *work,
6168 struct smb2_buffer_desc_v1 *desc,
6169 __le32 Channel,
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006170 __le16 ChannelInfoLength)
6171{
Hyunchul Lee6d896d32022-01-20 21:10:11 +09006172 unsigned int i, ch_count;
6173
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006174 if (work->conn->dialect == SMB30_PROT_ID &&
6175 Channel != SMB2_CHANNEL_RDMA_V1)
6176 return -EINVAL;
6177
Hyunchul Lee6d896d32022-01-20 21:10:11 +09006178 ch_count = le16_to_cpu(ChannelInfoLength) / sizeof(*desc);
6179 if (ksmbd_debug_types & KSMBD_DEBUG_RDMA) {
6180 for (i = 0; i < ch_count; i++) {
6181 pr_info("RDMA r/w request %#x: token %#x, length %#x\n",
6182 i,
6183 le32_to_cpu(desc[i].token),
6184 le32_to_cpu(desc[i].length));
6185 }
6186 }
Hyunchul Leeee1b0552022-04-30 08:30:29 +09006187 if (!ch_count)
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006188 return -EINVAL;
6189
6190 work->need_invalidate_rkey =
6191 (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE);
Hyunchul Lee1807abc2022-04-30 08:30:25 +09006192 if (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE)
6193 work->remote_key = le32_to_cpu(desc->token);
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006194 return 0;
6195}
6196
Namjae Jeone2f34482021-03-16 10:49:09 +09006197static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09006198 struct smb2_read_req *req, void *data_buf,
6199 size_t length)
Namjae Jeone2f34482021-03-16 10:49:09 +09006200{
Namjae Jeone2f34482021-03-16 10:49:09 +09006201 int err;
6202
Namjae Jeon64b39f42021-03-30 14:25:35 +09006203 err = ksmbd_conn_rdma_write(work->conn, data_buf, length,
Hyunchul Lee1807abc2022-04-30 08:30:25 +09006204 (struct smb2_buffer_desc_v1 *)
6205 ((char *)req + le16_to_cpu(req->ReadChannelInfoOffset)),
6206 le16_to_cpu(req->ReadChannelInfoLength));
Namjae Jeone2f34482021-03-16 10:49:09 +09006207 if (err)
6208 return err;
6209
6210 return length;
6211}
6212
6213/**
6214 * smb2_read() - handler for smb2 read from file
6215 * @work: smb work containing read command buffer
6216 *
6217 * Return: 0 on success, otherwise error
6218 */
6219int smb2_read(struct ksmbd_work *work)
6220{
6221 struct ksmbd_conn *conn = work->conn;
6222 struct smb2_read_req *req;
Namjae Jeoncb451722021-11-03 08:08:44 +09006223 struct smb2_read_rsp *rsp;
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006224 struct ksmbd_file *fp = NULL;
Namjae Jeone2f34482021-03-16 10:49:09 +09006225 loff_t offset;
6226 size_t length, mincount;
6227 ssize_t nbytes = 0, remain_bytes = 0;
6228 int err = 0;
Namjae Jeon7a843992022-05-16 16:23:28 +09006229 bool is_rdma_channel = false;
6230 unsigned int max_read_size = conn->vals->max_read_size;
Namjae Jeone2f34482021-03-16 10:49:09 +09006231
Namjae Jeone2f34482021-03-16 10:49:09 +09006232 WORK_BUFFERS(work, req, rsp);
6233
6234 if (test_share_config_flag(work->tcon->share_conf,
6235 KSMBD_SHARE_FLAG_PIPE)) {
6236 ksmbd_debug(SMB, "IPC pipe read request\n");
6237 return smb2_read_pipe(work);
6238 }
6239
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006240 if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE ||
6241 req->Channel == SMB2_CHANNEL_RDMA_V1) {
Namjae Jeon7a843992022-05-16 16:23:28 +09006242 is_rdma_channel = true;
6243 max_read_size = get_smbd_max_read_write_size();
6244 }
6245
6246 if (is_rdma_channel == true) {
Hyunchul Lee6d896d32022-01-20 21:10:11 +09006247 unsigned int ch_offset = le16_to_cpu(req->ReadChannelInfoOffset);
6248
6249 if (ch_offset < offsetof(struct smb2_read_req, Buffer)) {
6250 err = -EINVAL;
6251 goto out;
6252 }
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006253 err = smb2_set_remote_key_for_rdma(work,
6254 (struct smb2_buffer_desc_v1 *)
Hyunchul Lee6d896d32022-01-20 21:10:11 +09006255 ((char *)req + ch_offset),
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006256 req->Channel,
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006257 req->ReadChannelInfoLength);
6258 if (err)
6259 goto out;
6260 }
6261
Paulo Alcantara2d004c62022-03-21 13:08:26 -03006262 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
Namjae Jeone2f34482021-03-16 10:49:09 +09006263 if (!fp) {
Marios Makassikisa4382db2021-05-06 11:34:52 +09006264 err = -ENOENT;
6265 goto out;
Namjae Jeone2f34482021-03-16 10:49:09 +09006266 }
6267
6268 if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
Namjae Jeonbde16942021-06-28 15:23:19 +09006269 pr_err("Not permitted to read : 0x%x\n", fp->daccess);
Namjae Jeone2f34482021-03-16 10:49:09 +09006270 err = -EACCES;
6271 goto out;
6272 }
6273
6274 offset = le64_to_cpu(req->Offset);
6275 length = le32_to_cpu(req->Length);
6276 mincount = le32_to_cpu(req->MinimumCount);
6277
Namjae Jeon7a843992022-05-16 16:23:28 +09006278 if (length > max_read_size) {
Namjae Jeone2f34482021-03-16 10:49:09 +09006279 ksmbd_debug(SMB, "limiting read size to max size(%u)\n",
Namjae Jeon7a843992022-05-16 16:23:28 +09006280 max_read_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09006281 err = -EINVAL;
6282 goto out;
6283 }
6284
Al Viro369c1632022-01-30 21:11:02 -05006285 ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n",
6286 fp->filp, offset, length);
Namjae Jeone2f34482021-03-16 10:49:09 +09006287
Namjae Jeonc30f4eb2021-06-18 10:17:37 +09006288 work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
Namjae Jeone2f34482021-03-16 10:49:09 +09006289 if (!work->aux_payload_buf) {
Dan Carpenterc1ea1112021-03-22 17:50:11 +03006290 err = -ENOMEM;
Namjae Jeone2f34482021-03-16 10:49:09 +09006291 goto out;
6292 }
6293
6294 nbytes = ksmbd_vfs_read(work, fp, length, &offset);
6295 if (nbytes < 0) {
6296 err = nbytes;
6297 goto out;
6298 }
6299
6300 if ((nbytes == 0 && length != 0) || nbytes < mincount) {
Namjae Jeonc30f4eb2021-06-18 10:17:37 +09006301 kvfree(work->aux_payload_buf);
Namjae Jeone5066492021-03-30 12:35:23 +09006302 work->aux_payload_buf = NULL;
Namjae Jeone2f34482021-03-16 10:49:09 +09006303 rsp->hdr.Status = STATUS_END_OF_FILE;
6304 smb2_set_err_rsp(work);
6305 ksmbd_fd_put(work, fp);
6306 return 0;
6307 }
6308
6309 ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09006310 nbytes, offset, mincount);
Namjae Jeone2f34482021-03-16 10:49:09 +09006311
Namjae Jeon7a843992022-05-16 16:23:28 +09006312 if (is_rdma_channel == true) {
Namjae Jeone2f34482021-03-16 10:49:09 +09006313 /* write data to the client using rdma channel */
6314 remain_bytes = smb2_read_rdma_channel(work, req,
Namjae Jeon070fb212021-05-26 17:57:12 +09006315 work->aux_payload_buf,
6316 nbytes);
Namjae Jeonc30f4eb2021-06-18 10:17:37 +09006317 kvfree(work->aux_payload_buf);
Namjae Jeone5066492021-03-30 12:35:23 +09006318 work->aux_payload_buf = NULL;
Namjae Jeone2f34482021-03-16 10:49:09 +09006319
6320 nbytes = 0;
6321 if (remain_bytes < 0) {
6322 err = (int)remain_bytes;
6323 goto out;
6324 }
6325 }
6326
6327 rsp->StructureSize = cpu_to_le16(17);
6328 rsp->DataOffset = 80;
6329 rsp->Reserved = 0;
6330 rsp->DataLength = cpu_to_le32(nbytes);
6331 rsp->DataRemaining = cpu_to_le32(remain_bytes);
Ronnie Sahlberg699230f2021-09-09 12:26:12 +09006332 rsp->Flags = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09006333 inc_rfc1001_len(work->response_buf, 16);
6334 work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4;
Namjae Jeone2f34482021-03-16 10:49:09 +09006335 work->aux_payload_sz = nbytes;
Namjae Jeoncb451722021-11-03 08:08:44 +09006336 inc_rfc1001_len(work->response_buf, nbytes);
Namjae Jeone2f34482021-03-16 10:49:09 +09006337 ksmbd_fd_put(work, fp);
6338 return 0;
6339
6340out:
6341 if (err) {
6342 if (err == -EISDIR)
6343 rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST;
6344 else if (err == -EAGAIN)
6345 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6346 else if (err == -ENOENT)
6347 rsp->hdr.Status = STATUS_FILE_CLOSED;
6348 else if (err == -EACCES)
6349 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6350 else if (err == -ESHARE)
6351 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6352 else if (err == -EINVAL)
6353 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6354 else
6355 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6356
6357 smb2_set_err_rsp(work);
6358 }
6359 ksmbd_fd_put(work, fp);
6360 return err;
6361}
6362
6363/**
6364 * smb2_write_pipe() - handler for smb2 write on IPC pipe
6365 * @work: smb work containing write IPC pipe command buffer
6366 *
6367 * Return: 0 on success, otherwise error
6368 */
6369static noinline int smb2_write_pipe(struct ksmbd_work *work)
6370{
Namjae Jeoncb451722021-11-03 08:08:44 +09006371 struct smb2_write_req *req = smb2_get_msg(work->request_buf);
6372 struct smb2_write_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09006373 struct ksmbd_rpc_command *rpc_resp;
Namjae Jeon64b39f42021-03-30 14:25:35 +09006374 u64 id = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09006375 int err = 0, ret = 0;
6376 char *data_buf;
6377 size_t length;
6378
6379 length = le32_to_cpu(req->Length);
Paulo Alcantara2d004c62022-03-21 13:08:26 -03006380 id = req->VolatileFileId;
Namjae Jeone2f34482021-03-16 10:49:09 +09006381
Marios Makassikis158a66b2022-05-04 15:40:10 +02006382 if ((u64)le16_to_cpu(req->DataOffset) + length >
6383 get_rfc1002_len(work->request_buf)) {
6384 pr_err("invalid write data offset %u, smb_len %u\n",
6385 le16_to_cpu(req->DataOffset),
6386 get_rfc1002_len(work->request_buf));
6387 err = -EINVAL;
6388 goto out;
Namjae Jeone2f34482021-03-16 10:49:09 +09006389 }
6390
Marios Makassikis158a66b2022-05-04 15:40:10 +02006391 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6392 le16_to_cpu(req->DataOffset));
6393
Namjae Jeone2f34482021-03-16 10:49:09 +09006394 rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length);
6395 if (rpc_resp) {
6396 if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
6397 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
Namjae Jeon79f6b112021-04-02 12:47:14 +09006398 kvfree(rpc_resp);
Namjae Jeone2f34482021-03-16 10:49:09 +09006399 smb2_set_err_rsp(work);
6400 return -EOPNOTSUPP;
6401 }
6402 if (rpc_resp->flags != KSMBD_RPC_OK) {
6403 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6404 smb2_set_err_rsp(work);
Namjae Jeon79f6b112021-04-02 12:47:14 +09006405 kvfree(rpc_resp);
Namjae Jeone2f34482021-03-16 10:49:09 +09006406 return ret;
6407 }
Namjae Jeon79f6b112021-04-02 12:47:14 +09006408 kvfree(rpc_resp);
Namjae Jeone2f34482021-03-16 10:49:09 +09006409 }
6410
6411 rsp->StructureSize = cpu_to_le16(17);
6412 rsp->DataOffset = 0;
6413 rsp->Reserved = 0;
6414 rsp->DataLength = cpu_to_le32(length);
6415 rsp->DataRemaining = 0;
6416 rsp->Reserved2 = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09006417 inc_rfc1001_len(work->response_buf, 16);
Namjae Jeone2f34482021-03-16 10:49:09 +09006418 return 0;
6419out:
6420 if (err) {
6421 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6422 smb2_set_err_rsp(work);
6423 }
6424
6425 return err;
6426}
6427
6428static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09006429 struct smb2_write_req *req,
6430 struct ksmbd_file *fp,
6431 loff_t offset, size_t length, bool sync)
Namjae Jeone2f34482021-03-16 10:49:09 +09006432{
Namjae Jeone2f34482021-03-16 10:49:09 +09006433 char *data_buf;
6434 int ret;
6435 ssize_t nbytes;
6436
Namjae Jeon79f6b112021-04-02 12:47:14 +09006437 data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
Namjae Jeone2f34482021-03-16 10:49:09 +09006438 if (!data_buf)
6439 return -ENOMEM;
6440
6441 ret = ksmbd_conn_rdma_read(work->conn, data_buf, length,
Hyunchul Lee1807abc2022-04-30 08:30:25 +09006442 (struct smb2_buffer_desc_v1 *)
6443 ((char *)req + le16_to_cpu(req->WriteChannelInfoOffset)),
6444 le16_to_cpu(req->WriteChannelInfoLength));
Namjae Jeone2f34482021-03-16 10:49:09 +09006445 if (ret < 0) {
Namjae Jeon79f6b112021-04-02 12:47:14 +09006446 kvfree(data_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09006447 return ret;
6448 }
6449
Namjae Jeon64b39f42021-03-30 14:25:35 +09006450 ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes);
Namjae Jeon79f6b112021-04-02 12:47:14 +09006451 kvfree(data_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09006452 if (ret < 0)
6453 return ret;
6454
6455 return nbytes;
6456}
6457
6458/**
6459 * smb2_write() - handler for smb2 write from file
6460 * @work: smb work containing write command buffer
6461 *
6462 * Return: 0 on success, otherwise error
6463 */
6464int smb2_write(struct ksmbd_work *work)
6465{
6466 struct smb2_write_req *req;
Namjae Jeoncb451722021-11-03 08:08:44 +09006467 struct smb2_write_rsp *rsp;
Namjae Jeonbcd62a32021-05-10 09:08:19 +09006468 struct ksmbd_file *fp = NULL;
Namjae Jeone2f34482021-03-16 10:49:09 +09006469 loff_t offset;
6470 size_t length;
6471 ssize_t nbytes;
6472 char *data_buf;
Namjae Jeon7a843992022-05-16 16:23:28 +09006473 bool writethrough = false, is_rdma_channel = false;
Namjae Jeone2f34482021-03-16 10:49:09 +09006474 int err = 0;
Namjae Jeon7a843992022-05-16 16:23:28 +09006475 unsigned int max_write_size = work->conn->vals->max_write_size;
Namjae Jeone2f34482021-03-16 10:49:09 +09006476
Namjae Jeone2f34482021-03-16 10:49:09 +09006477 WORK_BUFFERS(work, req, rsp);
6478
Namjae Jeon64b39f42021-03-30 14:25:35 +09006479 if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09006480 ksmbd_debug(SMB, "IPC pipe write request\n");
6481 return smb2_write_pipe(work);
6482 }
6483
Namjae Jeon7a843992022-05-16 16:23:28 +09006484 offset = le64_to_cpu(req->Offset);
6485 length = le32_to_cpu(req->Length);
6486
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006487 if (req->Channel == SMB2_CHANNEL_RDMA_V1 ||
6488 req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE) {
Namjae Jeon7a843992022-05-16 16:23:28 +09006489 is_rdma_channel = true;
6490 max_write_size = get_smbd_max_read_write_size();
6491 length = le32_to_cpu(req->RemainingBytes);
6492 }
6493
6494 if (is_rdma_channel == true) {
Hyunchul Lee6d896d32022-01-20 21:10:11 +09006495 unsigned int ch_offset = le16_to_cpu(req->WriteChannelInfoOffset);
6496
6497 if (req->Length != 0 || req->DataOffset != 0 ||
6498 ch_offset < offsetof(struct smb2_write_req, Buffer)) {
6499 err = -EINVAL;
6500 goto out;
6501 }
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006502 err = smb2_set_remote_key_for_rdma(work,
6503 (struct smb2_buffer_desc_v1 *)
Hyunchul Lee6d896d32022-01-20 21:10:11 +09006504 ((char *)req + ch_offset),
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006505 req->Channel,
Hyunchul Lee2fd5dcb2022-01-13 09:51:39 +09006506 req->WriteChannelInfoLength);
6507 if (err)
6508 goto out;
6509 }
6510
Namjae Jeone2f34482021-03-16 10:49:09 +09006511 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
6512 ksmbd_debug(SMB, "User does not have write permission\n");
6513 err = -EACCES;
6514 goto out;
6515 }
6516
Paulo Alcantara2d004c62022-03-21 13:08:26 -03006517 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
Namjae Jeone2f34482021-03-16 10:49:09 +09006518 if (!fp) {
Marios Makassikisa4382db2021-05-06 11:34:52 +09006519 err = -ENOENT;
6520 goto out;
Namjae Jeone2f34482021-03-16 10:49:09 +09006521 }
6522
6523 if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
Namjae Jeonbde16942021-06-28 15:23:19 +09006524 pr_err("Not permitted to write : 0x%x\n", fp->daccess);
Namjae Jeone2f34482021-03-16 10:49:09 +09006525 err = -EACCES;
6526 goto out;
6527 }
6528
Namjae Jeon7a843992022-05-16 16:23:28 +09006529 if (length > max_write_size) {
Namjae Jeone2f34482021-03-16 10:49:09 +09006530 ksmbd_debug(SMB, "limiting write size to max size(%u)\n",
Namjae Jeon7a843992022-05-16 16:23:28 +09006531 max_write_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09006532 err = -EINVAL;
6533 goto out;
6534 }
6535
Hyunchul Lee745bbc02022-06-14 08:25:50 +09006536 ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags));
Namjae Jeone2f34482021-03-16 10:49:09 +09006537 if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
6538 writethrough = true;
6539
Namjae Jeon7a843992022-05-16 16:23:28 +09006540 if (is_rdma_channel == false) {
Hyunchul Leeac607782022-07-28 23:41:51 +09006541 if (le16_to_cpu(req->DataOffset) <
6542 offsetof(struct smb2_write_req, Buffer)) {
Marios Makassikis158a66b2022-05-04 15:40:10 +02006543 err = -EINVAL;
6544 goto out;
Namjae Jeone2f34482021-03-16 10:49:09 +09006545 }
Hyunchul Leeac607782022-07-28 23:41:51 +09006546
Marios Makassikis158a66b2022-05-04 15:40:10 +02006547 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6548 le16_to_cpu(req->DataOffset));
Namjae Jeone2f34482021-03-16 10:49:09 +09006549
Al Viro369c1632022-01-30 21:11:02 -05006550 ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n",
6551 fp->filp, offset, length);
Namjae Jeone2f34482021-03-16 10:49:09 +09006552 err = ksmbd_vfs_write(work, fp, data_buf, length, &offset,
6553 writethrough, &nbytes);
6554 if (err < 0)
6555 goto out;
6556 } else {
6557 /* read data from the client using rdma channel, and
6558 * write the data.
6559 */
Namjae Jeon7a843992022-05-16 16:23:28 +09006560 nbytes = smb2_write_rdma_channel(work, req, fp, offset, length,
Namjae Jeon070fb212021-05-26 17:57:12 +09006561 writethrough);
Namjae Jeone2f34482021-03-16 10:49:09 +09006562 if (nbytes < 0) {
6563 err = (int)nbytes;
6564 goto out;
6565 }
6566 }
6567
6568 rsp->StructureSize = cpu_to_le16(17);
6569 rsp->DataOffset = 0;
6570 rsp->Reserved = 0;
6571 rsp->DataLength = cpu_to_le32(nbytes);
6572 rsp->DataRemaining = 0;
6573 rsp->Reserved2 = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09006574 inc_rfc1001_len(work->response_buf, 16);
Namjae Jeone2f34482021-03-16 10:49:09 +09006575 ksmbd_fd_put(work, fp);
6576 return 0;
6577
6578out:
6579 if (err == -EAGAIN)
6580 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6581 else if (err == -ENOSPC || err == -EFBIG)
6582 rsp->hdr.Status = STATUS_DISK_FULL;
6583 else if (err == -ENOENT)
6584 rsp->hdr.Status = STATUS_FILE_CLOSED;
6585 else if (err == -EACCES)
6586 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6587 else if (err == -ESHARE)
6588 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6589 else if (err == -EINVAL)
6590 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6591 else
6592 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6593
6594 smb2_set_err_rsp(work);
6595 ksmbd_fd_put(work, fp);
6596 return err;
6597}
6598
6599/**
6600 * smb2_flush() - handler for smb2 flush file - fsync
6601 * @work: smb work containing flush command buffer
6602 *
6603 * Return: 0 on success, otherwise error
6604 */
6605int smb2_flush(struct ksmbd_work *work)
6606{
6607 struct smb2_flush_req *req;
Namjae Jeoncb451722021-11-03 08:08:44 +09006608 struct smb2_flush_rsp *rsp;
Namjae Jeone2f34482021-03-16 10:49:09 +09006609 int err;
6610
Namjae Jeone2f34482021-03-16 10:49:09 +09006611 WORK_BUFFERS(work, req, rsp);
6612
Paulo Alcantara2d004c62022-03-21 13:08:26 -03006613 ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n", req->VolatileFileId);
Namjae Jeone2f34482021-03-16 10:49:09 +09006614
Paulo Alcantara2d004c62022-03-21 13:08:26 -03006615 err = ksmbd_vfs_fsync(work, req->VolatileFileId, req->PersistentFileId);
Namjae Jeone2f34482021-03-16 10:49:09 +09006616 if (err)
6617 goto out;
6618
6619 rsp->StructureSize = cpu_to_le16(4);
6620 rsp->Reserved = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09006621 inc_rfc1001_len(work->response_buf, 4);
Namjae Jeone2f34482021-03-16 10:49:09 +09006622 return 0;
6623
6624out:
6625 if (err) {
6626 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6627 smb2_set_err_rsp(work);
6628 }
6629
6630 return err;
6631}
6632
6633/**
6634 * smb2_cancel() - handler for smb2 cancel command
6635 * @work: smb work containing cancel command buffer
6636 *
6637 * Return: 0 on success, otherwise error
6638 */
6639int smb2_cancel(struct ksmbd_work *work)
6640{
6641 struct ksmbd_conn *conn = work->conn;
Namjae Jeoncb451722021-11-03 08:08:44 +09006642 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09006643 struct smb2_hdr *chdr;
Jakob Koscheledf5f052022-03-24 08:13:01 +01006644 struct ksmbd_work *cancel_work = NULL, *iter;
Namjae Jeone2f34482021-03-16 10:49:09 +09006645 struct list_head *command_list;
6646
6647 ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09006648 hdr->MessageId, hdr->Flags);
Namjae Jeone2f34482021-03-16 10:49:09 +09006649
6650 if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) {
6651 command_list = &conn->async_requests;
6652
6653 spin_lock(&conn->request_lock);
Jakob Koscheledf5f052022-03-24 08:13:01 +01006654 list_for_each_entry(iter, command_list,
Namjae Jeon6f3d5ee2021-06-18 10:28:52 +09006655 async_request_entry) {
Jakob Koscheledf5f052022-03-24 08:13:01 +01006656 chdr = smb2_get_msg(iter->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09006657
Jakob Koscheledf5f052022-03-24 08:13:01 +01006658 if (iter->async_id !=
Namjae Jeon64b39f42021-03-30 14:25:35 +09006659 le64_to_cpu(hdr->Id.AsyncId))
Namjae Jeone2f34482021-03-16 10:49:09 +09006660 continue;
6661
6662 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09006663 "smb2 with AsyncId %llu cancelled command = 0x%x\n",
6664 le64_to_cpu(hdr->Id.AsyncId),
6665 le16_to_cpu(chdr->Command));
Jakob Koscheledf5f052022-03-24 08:13:01 +01006666 cancel_work = iter;
Namjae Jeone2f34482021-03-16 10:49:09 +09006667 break;
6668 }
6669 spin_unlock(&conn->request_lock);
6670 } else {
6671 command_list = &conn->requests;
6672
6673 spin_lock(&conn->request_lock);
Jakob Koscheledf5f052022-03-24 08:13:01 +01006674 list_for_each_entry(iter, command_list, request_entry) {
6675 chdr = smb2_get_msg(iter->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09006676
6677 if (chdr->MessageId != hdr->MessageId ||
Jakob Koscheledf5f052022-03-24 08:13:01 +01006678 iter == work)
Namjae Jeone2f34482021-03-16 10:49:09 +09006679 continue;
6680
6681 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09006682 "smb2 with mid %llu cancelled command = 0x%x\n",
6683 le64_to_cpu(hdr->MessageId),
6684 le16_to_cpu(chdr->Command));
Jakob Koscheledf5f052022-03-24 08:13:01 +01006685 cancel_work = iter;
Namjae Jeone2f34482021-03-16 10:49:09 +09006686 break;
6687 }
6688 spin_unlock(&conn->request_lock);
6689 }
6690
Jakob Koscheledf5f052022-03-24 08:13:01 +01006691 if (cancel_work) {
Namjae Jeone2f34482021-03-16 10:49:09 +09006692 cancel_work->state = KSMBD_WORK_CANCELLED;
6693 if (cancel_work->cancel_fn)
6694 cancel_work->cancel_fn(cancel_work->cancel_argv);
6695 }
6696
6697 /* For SMB2_CANCEL command itself send no response*/
6698 work->send_no_response = 1;
6699 return 0;
6700}
6701
6702struct file_lock *smb_flock_init(struct file *f)
6703{
6704 struct file_lock *fl;
6705
6706 fl = locks_alloc_lock();
6707 if (!fl)
6708 goto out;
6709
6710 locks_init_lock(fl);
6711
6712 fl->fl_owner = f;
6713 fl->fl_pid = current->tgid;
6714 fl->fl_file = f;
6715 fl->fl_flags = FL_POSIX;
6716 fl->fl_ops = NULL;
6717 fl->fl_lmops = NULL;
6718
6719out:
6720 return fl;
6721}
6722
6723static int smb2_set_flock_flags(struct file_lock *flock, int flags)
6724{
6725 int cmd = -EINVAL;
6726
6727 /* Checking for wrong flag combination during lock request*/
6728 switch (flags) {
6729 case SMB2_LOCKFLAG_SHARED:
6730 ksmbd_debug(SMB, "received shared request\n");
6731 cmd = F_SETLKW;
6732 flock->fl_type = F_RDLCK;
6733 flock->fl_flags |= FL_SLEEP;
6734 break;
6735 case SMB2_LOCKFLAG_EXCLUSIVE:
6736 ksmbd_debug(SMB, "received exclusive request\n");
6737 cmd = F_SETLKW;
6738 flock->fl_type = F_WRLCK;
6739 flock->fl_flags |= FL_SLEEP;
6740 break;
Namjae Jeon64b39f42021-03-30 14:25:35 +09006741 case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
Namjae Jeone2f34482021-03-16 10:49:09 +09006742 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09006743 "received shared & fail immediately request\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09006744 cmd = F_SETLK;
6745 flock->fl_type = F_RDLCK;
6746 break;
Namjae Jeon64b39f42021-03-30 14:25:35 +09006747 case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
Namjae Jeone2f34482021-03-16 10:49:09 +09006748 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09006749 "received exclusive & fail immediately request\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09006750 cmd = F_SETLK;
6751 flock->fl_type = F_WRLCK;
6752 break;
6753 case SMB2_LOCKFLAG_UNLOCK:
6754 ksmbd_debug(SMB, "received unlock request\n");
6755 flock->fl_type = F_UNLCK;
Jeff Layton7ecbe922022-11-11 08:11:53 -05006756 cmd = F_SETLK;
Namjae Jeone2f34482021-03-16 10:49:09 +09006757 break;
6758 }
6759
6760 return cmd;
6761}
6762
6763static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock,
Namjae Jeon070fb212021-05-26 17:57:12 +09006764 unsigned int cmd, int flags,
6765 struct list_head *lock_list)
Namjae Jeone2f34482021-03-16 10:49:09 +09006766{
6767 struct ksmbd_lock *lock;
6768
6769 lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL);
6770 if (!lock)
6771 return NULL;
6772
6773 lock->cmd = cmd;
6774 lock->fl = flock;
6775 lock->start = flock->fl_start;
6776 lock->end = flock->fl_end;
6777 lock->flags = flags;
6778 if (lock->start == lock->end)
6779 lock->zero_len = 1;
Hyunchul Leed63528e2021-07-10 16:22:41 +09006780 INIT_LIST_HEAD(&lock->clist);
6781 INIT_LIST_HEAD(&lock->flist);
Namjae Jeone2f34482021-03-16 10:49:09 +09006782 INIT_LIST_HEAD(&lock->llist);
Namjae Jeone2f34482021-03-16 10:49:09 +09006783 list_add_tail(&lock->llist, lock_list);
6784
6785 return lock;
6786}
6787
6788static void smb2_remove_blocked_lock(void **argv)
6789{
6790 struct file_lock *flock = (struct file_lock *)argv[0];
6791
6792 ksmbd_vfs_posix_lock_unblock(flock);
6793 wake_up(&flock->fl_wait);
6794}
6795
6796static inline bool lock_defer_pending(struct file_lock *fl)
6797{
6798 /* check pending lock waiters */
6799 return waitqueue_active(&fl->fl_wait);
6800}
6801
6802/**
6803 * smb2_lock() - handler for smb2 file lock command
6804 * @work: smb work containing lock command buffer
6805 *
6806 * Return: 0 on success, otherwise error
6807 */
6808int smb2_lock(struct ksmbd_work *work)
6809{
Namjae Jeoncb451722021-11-03 08:08:44 +09006810 struct smb2_lock_req *req = smb2_get_msg(work->request_buf);
6811 struct smb2_lock_rsp *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09006812 struct smb2_lock_element *lock_ele;
6813 struct ksmbd_file *fp = NULL;
6814 struct file_lock *flock = NULL;
6815 struct file *filp = NULL;
6816 int lock_count;
6817 int flags = 0;
6818 int cmd = 0;
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006819 int err = -EIO, i, rc = 0;
Namjae Jeon50bf80a2021-05-14 12:20:07 +09006820 u64 lock_start, lock_length;
Hyunchul Leed63528e2021-07-10 16:22:41 +09006821 struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp, *tmp2;
6822 struct ksmbd_conn *conn;
Namjae Jeone2f34482021-03-16 10:49:09 +09006823 int nolock = 0;
6824 LIST_HEAD(lock_list);
6825 LIST_HEAD(rollback_list);
6826 int prior_lock = 0;
6827
6828 ksmbd_debug(SMB, "Received lock request\n");
Paulo Alcantara2d004c62022-03-21 13:08:26 -03006829 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
Namjae Jeone2f34482021-03-16 10:49:09 +09006830 if (!fp) {
Paulo Alcantara2d004c62022-03-21 13:08:26 -03006831 ksmbd_debug(SMB, "Invalid file id for lock : %llu\n", req->VolatileFileId);
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006832 err = -ENOENT;
Namjae Jeone2f34482021-03-16 10:49:09 +09006833 goto out2;
6834 }
6835
6836 filp = fp->filp;
6837 lock_count = le16_to_cpu(req->LockCount);
6838 lock_ele = req->locks;
6839
6840 ksmbd_debug(SMB, "lock count is %d\n", lock_count);
Namjae Jeon070fb212021-05-26 17:57:12 +09006841 if (!lock_count) {
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006842 err = -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09006843 goto out2;
6844 }
6845
6846 for (i = 0; i < lock_count; i++) {
6847 flags = le32_to_cpu(lock_ele[i].Flags);
6848
6849 flock = smb_flock_init(filp);
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006850 if (!flock)
Namjae Jeone2f34482021-03-16 10:49:09 +09006851 goto out;
Namjae Jeone2f34482021-03-16 10:49:09 +09006852
6853 cmd = smb2_set_flock_flags(flock, flags);
6854
Namjae Jeon50bf80a2021-05-14 12:20:07 +09006855 lock_start = le64_to_cpu(lock_ele[i].Offset);
6856 lock_length = le64_to_cpu(lock_ele[i].Length);
6857 if (lock_start > U64_MAX - lock_length) {
Namjae Jeonbde16942021-06-28 15:23:19 +09006858 pr_err("Invalid lock range requested\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09006859 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
Marios Makassikis01f6c612022-11-29 12:19:33 +01006860 locks_free_lock(flock);
Namjae Jeone2f34482021-03-16 10:49:09 +09006861 goto out;
6862 }
6863
Namjae Jeon50bf80a2021-05-14 12:20:07 +09006864 if (lock_start > OFFSET_MAX)
6865 flock->fl_start = OFFSET_MAX;
6866 else
6867 flock->fl_start = lock_start;
6868
Namjae Jeone2f34482021-03-16 10:49:09 +09006869 lock_length = le64_to_cpu(lock_ele[i].Length);
Namjae Jeon50bf80a2021-05-14 12:20:07 +09006870 if (lock_length > OFFSET_MAX - flock->fl_start)
6871 lock_length = OFFSET_MAX - flock->fl_start;
Namjae Jeone2f34482021-03-16 10:49:09 +09006872
6873 flock->fl_end = flock->fl_start + lock_length;
6874
6875 if (flock->fl_end < flock->fl_start) {
6876 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09006877 "the end offset(%llx) is smaller than the start offset(%llx)\n",
6878 flock->fl_end, flock->fl_start);
Namjae Jeone2f34482021-03-16 10:49:09 +09006879 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
Marios Makassikis01f6c612022-11-29 12:19:33 +01006880 locks_free_lock(flock);
Namjae Jeone2f34482021-03-16 10:49:09 +09006881 goto out;
6882 }
6883
6884 /* Check conflict locks in one request */
6885 list_for_each_entry(cmp_lock, &lock_list, llist) {
6886 if (cmp_lock->fl->fl_start <= flock->fl_start &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09006887 cmp_lock->fl->fl_end >= flock->fl_end) {
Namjae Jeone2f34482021-03-16 10:49:09 +09006888 if (cmp_lock->fl->fl_type != F_UNLCK &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09006889 flock->fl_type != F_UNLCK) {
Namjae Jeonbde16942021-06-28 15:23:19 +09006890 pr_err("conflict two locks in one request\n");
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006891 err = -EINVAL;
Marios Makassikis01f6c612022-11-29 12:19:33 +01006892 locks_free_lock(flock);
Namjae Jeone2f34482021-03-16 10:49:09 +09006893 goto out;
6894 }
6895 }
6896 }
6897
6898 smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list);
6899 if (!smb_lock) {
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006900 err = -EINVAL;
Marios Makassikis01f6c612022-11-29 12:19:33 +01006901 locks_free_lock(flock);
Namjae Jeone2f34482021-03-16 10:49:09 +09006902 goto out;
6903 }
6904 }
6905
6906 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
6907 if (smb_lock->cmd < 0) {
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006908 err = -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09006909 goto out;
6910 }
6911
6912 if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) {
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006913 err = -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09006914 goto out;
6915 }
6916
Namjae Jeon64b39f42021-03-30 14:25:35 +09006917 if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) &&
6918 smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) ||
6919 (prior_lock == SMB2_LOCKFLAG_UNLOCK &&
6920 !(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) {
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006921 err = -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09006922 goto out;
6923 }
6924
6925 prior_lock = smb_lock->flags;
6926
6927 if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09006928 !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY))
Hyunchul Leed63528e2021-07-10 16:22:41 +09006929 goto no_check_cl;
Namjae Jeone2f34482021-03-16 10:49:09 +09006930
6931 nolock = 1;
Hyunchul Leed63528e2021-07-10 16:22:41 +09006932 /* check locks in connection list */
6933 read_lock(&conn_list_lock);
6934 list_for_each_entry(conn, &conn_list, conns_list) {
6935 spin_lock(&conn->llist_lock);
6936 list_for_each_entry_safe(cmp_lock, tmp2, &conn->lock_list, clist) {
6937 if (file_inode(cmp_lock->fl->fl_file) !=
6938 file_inode(smb_lock->fl->fl_file))
6939 continue;
Namjae Jeone2f34482021-03-16 10:49:09 +09006940
Hyunchul Leed63528e2021-07-10 16:22:41 +09006941 if (smb_lock->fl->fl_type == F_UNLCK) {
6942 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file &&
6943 cmp_lock->start == smb_lock->start &&
6944 cmp_lock->end == smb_lock->end &&
6945 !lock_defer_pending(cmp_lock->fl)) {
6946 nolock = 0;
6947 list_del(&cmp_lock->flist);
6948 list_del(&cmp_lock->clist);
6949 spin_unlock(&conn->llist_lock);
6950 read_unlock(&conn_list_lock);
6951
6952 locks_free_lock(cmp_lock->fl);
6953 kfree(cmp_lock);
6954 goto out_check_cl;
6955 }
6956 continue;
Namjae Jeone2f34482021-03-16 10:49:09 +09006957 }
Namjae Jeone2f34482021-03-16 10:49:09 +09006958
Hyunchul Leed63528e2021-07-10 16:22:41 +09006959 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) {
6960 if (smb_lock->flags & SMB2_LOCKFLAG_SHARED)
6961 continue;
6962 } else {
6963 if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED)
6964 continue;
6965 }
Namjae Jeone2f34482021-03-16 10:49:09 +09006966
Hyunchul Leed63528e2021-07-10 16:22:41 +09006967 /* check zero byte lock range */
6968 if (cmp_lock->zero_len && !smb_lock->zero_len &&
6969 cmp_lock->start > smb_lock->start &&
6970 cmp_lock->start < smb_lock->end) {
6971 spin_unlock(&conn->llist_lock);
6972 read_unlock(&conn_list_lock);
6973 pr_err("previous lock conflict with zero byte lock range\n");
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006974 goto out;
Hyunchul Leed63528e2021-07-10 16:22:41 +09006975 }
Namjae Jeone2f34482021-03-16 10:49:09 +09006976
Hyunchul Leed63528e2021-07-10 16:22:41 +09006977 if (smb_lock->zero_len && !cmp_lock->zero_len &&
6978 smb_lock->start > cmp_lock->start &&
6979 smb_lock->start < cmp_lock->end) {
6980 spin_unlock(&conn->llist_lock);
6981 read_unlock(&conn_list_lock);
6982 pr_err("current lock conflict with zero byte lock range\n");
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09006983 goto out;
Hyunchul Leed63528e2021-07-10 16:22:41 +09006984 }
Namjae Jeone2f34482021-03-16 10:49:09 +09006985
Hyunchul Leed63528e2021-07-10 16:22:41 +09006986 if (((cmp_lock->start <= smb_lock->start &&
6987 cmp_lock->end > smb_lock->start) ||
6988 (cmp_lock->start < smb_lock->end &&
6989 cmp_lock->end >= smb_lock->end)) &&
6990 !cmp_lock->zero_len && !smb_lock->zero_len) {
6991 spin_unlock(&conn->llist_lock);
6992 read_unlock(&conn_list_lock);
6993 pr_err("Not allow lock operation on exclusive lock range\n");
Hyunchul Leed63528e2021-07-10 16:22:41 +09006994 goto out;
6995 }
Namjae Jeone2f34482021-03-16 10:49:09 +09006996 }
Hyunchul Leed63528e2021-07-10 16:22:41 +09006997 spin_unlock(&conn->llist_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09006998 }
Hyunchul Leed63528e2021-07-10 16:22:41 +09006999 read_unlock(&conn_list_lock);
7000out_check_cl:
Namjae Jeone2f34482021-03-16 10:49:09 +09007001 if (smb_lock->fl->fl_type == F_UNLCK && nolock) {
Namjae Jeonbde16942021-06-28 15:23:19 +09007002 pr_err("Try to unlock nolocked range\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09007003 rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED;
7004 goto out;
7005 }
7006
Hyunchul Leed63528e2021-07-10 16:22:41 +09007007no_check_cl:
Namjae Jeone2f34482021-03-16 10:49:09 +09007008 if (smb_lock->zero_len) {
7009 err = 0;
7010 goto skip;
7011 }
7012
7013 flock = smb_lock->fl;
7014 list_del(&smb_lock->llist);
7015retry:
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09007016 rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL);
Namjae Jeone2f34482021-03-16 10:49:09 +09007017skip:
7018 if (flags & SMB2_LOCKFLAG_UNLOCK) {
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09007019 if (!rc) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007020 ksmbd_debug(SMB, "File unlocked\n");
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09007021 } else if (rc == -ENOENT) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007022 rsp->hdr.Status = STATUS_NOT_LOCKED;
7023 goto out;
7024 }
7025 locks_free_lock(flock);
7026 kfree(smb_lock);
7027 } else {
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09007028 if (rc == FILE_LOCK_DEFERRED) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007029 void **argv;
7030
7031 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09007032 "would have to wait for getting lock\n");
Hyunchul Leed63528e2021-07-10 16:22:41 +09007033 spin_lock(&work->conn->llist_lock);
7034 list_add_tail(&smb_lock->clist,
7035 &work->conn->lock_list);
7036 spin_unlock(&work->conn->llist_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09007037 list_add(&smb_lock->llist, &rollback_list);
7038
7039 argv = kmalloc(sizeof(void *), GFP_KERNEL);
7040 if (!argv) {
7041 err = -ENOMEM;
7042 goto out;
7043 }
7044 argv[0] = flock;
7045
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09007046 rc = setup_async_work(work,
7047 smb2_remove_blocked_lock,
7048 argv);
7049 if (rc) {
7050 err = -ENOMEM;
Namjae Jeone2f34482021-03-16 10:49:09 +09007051 goto out;
7052 }
7053 spin_lock(&fp->f_lock);
7054 list_add(&work->fp_entry, &fp->blocked_works);
7055 spin_unlock(&fp->f_lock);
7056
7057 smb2_send_interim_resp(work, STATUS_PENDING);
7058
Hyunchul Lee45a64e82021-07-10 09:34:20 +09007059 ksmbd_vfs_posix_lock_wait(flock);
Namjae Jeone2f34482021-03-16 10:49:09 +09007060
Hyunchul Leed4075ab2021-06-25 07:02:10 +09007061 if (work->state != KSMBD_WORK_ACTIVE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007062 list_del(&smb_lock->llist);
Hyunchul Leed63528e2021-07-10 16:22:41 +09007063 spin_lock(&work->conn->llist_lock);
7064 list_del(&smb_lock->clist);
7065 spin_unlock(&work->conn->llist_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09007066 locks_free_lock(flock);
7067
Hyunchul Leed4075ab2021-06-25 07:02:10 +09007068 if (work->state == KSMBD_WORK_CANCELLED) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007069 spin_lock(&fp->f_lock);
7070 list_del(&work->fp_entry);
7071 spin_unlock(&fp->f_lock);
7072 rsp->hdr.Status =
7073 STATUS_CANCELLED;
7074 kfree(smb_lock);
7075 smb2_send_interim_resp(work,
Namjae Jeon070fb212021-05-26 17:57:12 +09007076 STATUS_CANCELLED);
Namjae Jeone2f34482021-03-16 10:49:09 +09007077 work->send_no_response = 1;
7078 goto out;
7079 }
7080 init_smb2_rsp_hdr(work);
7081 smb2_set_err_rsp(work);
7082 rsp->hdr.Status =
7083 STATUS_RANGE_NOT_LOCKED;
7084 kfree(smb_lock);
7085 goto out2;
7086 }
7087
7088 list_del(&smb_lock->llist);
Hyunchul Leed63528e2021-07-10 16:22:41 +09007089 spin_lock(&work->conn->llist_lock);
7090 list_del(&smb_lock->clist);
7091 spin_unlock(&work->conn->llist_lock);
7092
Namjae Jeone2f34482021-03-16 10:49:09 +09007093 spin_lock(&fp->f_lock);
7094 list_del(&work->fp_entry);
7095 spin_unlock(&fp->f_lock);
7096 goto retry;
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09007097 } else if (!rc) {
Hyunchul Leed63528e2021-07-10 16:22:41 +09007098 spin_lock(&work->conn->llist_lock);
7099 list_add_tail(&smb_lock->clist,
7100 &work->conn->lock_list);
7101 list_add_tail(&smb_lock->flist,
7102 &fp->lock_list);
7103 spin_unlock(&work->conn->llist_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09007104 list_add(&smb_lock->llist, &rollback_list);
7105 ksmbd_debug(SMB, "successful in taking lock\n");
7106 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09007107 goto out;
7108 }
7109 }
7110 }
7111
7112 if (atomic_read(&fp->f_ci->op_count) > 1)
7113 smb_break_all_oplock(work, fp);
7114
7115 rsp->StructureSize = cpu_to_le16(4);
7116 ksmbd_debug(SMB, "successful in taking lock\n");
7117 rsp->hdr.Status = STATUS_SUCCESS;
7118 rsp->Reserved = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09007119 inc_rfc1001_len(work->response_buf, 4);
Namjae Jeone2f34482021-03-16 10:49:09 +09007120 ksmbd_fd_put(work, fp);
Namjae Jeon96ad4ec2021-07-13 17:17:28 +09007121 return 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09007122
7123out:
7124 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
7125 locks_free_lock(smb_lock->fl);
7126 list_del(&smb_lock->llist);
7127 kfree(smb_lock);
7128 }
7129
7130 list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) {
7131 struct file_lock *rlock = NULL;
7132
7133 rlock = smb_flock_init(filp);
7134 rlock->fl_type = F_UNLCK;
7135 rlock->fl_start = smb_lock->start;
7136 rlock->fl_end = smb_lock->end;
7137
Jeff Layton7ecbe922022-11-11 08:11:53 -05007138 rc = vfs_lock_file(filp, F_SETLK, rlock, NULL);
Namjae Jeon96ad4ec2021-07-13 17:17:28 +09007139 if (rc)
7140 pr_err("rollback unlock fail : %d\n", rc);
Hyunchul Leed63528e2021-07-10 16:22:41 +09007141
Namjae Jeone2f34482021-03-16 10:49:09 +09007142 list_del(&smb_lock->llist);
Hyunchul Leed63528e2021-07-10 16:22:41 +09007143 spin_lock(&work->conn->llist_lock);
7144 if (!list_empty(&smb_lock->flist))
7145 list_del(&smb_lock->flist);
7146 list_del(&smb_lock->clist);
7147 spin_unlock(&work->conn->llist_lock);
7148
Namjae Jeone2f34482021-03-16 10:49:09 +09007149 locks_free_lock(smb_lock->fl);
7150 locks_free_lock(rlock);
7151 kfree(smb_lock);
7152 }
7153out2:
Namjae Jeon6c99dfc2021-07-27 09:40:05 +09007154 ksmbd_debug(SMB, "failed in taking lock(flags : %x), err : %d\n", flags, err);
7155
7156 if (!rsp->hdr.Status) {
7157 if (err == -EINVAL)
7158 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7159 else if (err == -ENOMEM)
7160 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
7161 else if (err == -ENOENT)
7162 rsp->hdr.Status = STATUS_FILE_CLOSED;
7163 else
7164 rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED;
7165 }
7166
Namjae Jeone2f34482021-03-16 10:49:09 +09007167 smb2_set_err_rsp(work);
7168 ksmbd_fd_put(work, fp);
Namjae Jeon96ad4ec2021-07-13 17:17:28 +09007169 return err;
Namjae Jeone2f34482021-03-16 10:49:09 +09007170}
7171
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007172static int fsctl_copychunk(struct ksmbd_work *work,
7173 struct copychunk_ioctl_req *ci_req,
7174 unsigned int cnt_code,
7175 unsigned int input_count,
7176 unsigned long long volatile_id,
7177 unsigned long long persistent_id,
Namjae Jeon070fb212021-05-26 17:57:12 +09007178 struct smb2_ioctl_rsp *rsp)
Namjae Jeone2f34482021-03-16 10:49:09 +09007179{
Namjae Jeone2f34482021-03-16 10:49:09 +09007180 struct copychunk_ioctl_rsp *ci_rsp;
7181 struct ksmbd_file *src_fp = NULL, *dst_fp = NULL;
7182 struct srv_copychunk *chunks;
7183 unsigned int i, chunk_count, chunk_count_written = 0;
7184 unsigned int chunk_size_written = 0;
7185 loff_t total_size_written = 0;
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007186 int ret = 0;
Namjae Jeone2f34482021-03-16 10:49:09 +09007187
Namjae Jeone2f34482021-03-16 10:49:09 +09007188 ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0];
7189
Paulo Alcantara2d004c62022-03-21 13:08:26 -03007190 rsp->VolatileFileId = volatile_id;
7191 rsp->PersistentFileId = persistent_id;
Namjae Jeon64b39f42021-03-30 14:25:35 +09007192 ci_rsp->ChunksWritten =
7193 cpu_to_le32(ksmbd_server_side_copy_max_chunk_count());
7194 ci_rsp->ChunkBytesWritten =
7195 cpu_to_le32(ksmbd_server_side_copy_max_chunk_size());
7196 ci_rsp->TotalBytesWritten =
7197 cpu_to_le32(ksmbd_server_side_copy_max_total_size());
Namjae Jeone2f34482021-03-16 10:49:09 +09007198
7199 chunks = (struct srv_copychunk *)&ci_req->Chunks[0];
7200 chunk_count = le32_to_cpu(ci_req->ChunkCount);
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007201 if (chunk_count == 0)
7202 goto out;
Namjae Jeone2f34482021-03-16 10:49:09 +09007203 total_size_written = 0;
7204
7205 /* verify the SRV_COPYCHUNK_COPY packet */
7206 if (chunk_count > ksmbd_server_side_copy_max_chunk_count() ||
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007207 input_count < offsetof(struct copychunk_ioctl_req, Chunks) +
Namjae Jeon64b39f42021-03-30 14:25:35 +09007208 chunk_count * sizeof(struct srv_copychunk)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007209 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7210 return -EINVAL;
7211 }
7212
7213 for (i = 0; i < chunk_count; i++) {
7214 if (le32_to_cpu(chunks[i].Length) == 0 ||
Namjae Jeon64b39f42021-03-30 14:25:35 +09007215 le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size())
Namjae Jeone2f34482021-03-16 10:49:09 +09007216 break;
7217 total_size_written += le32_to_cpu(chunks[i].Length);
7218 }
Namjae Jeon64b39f42021-03-30 14:25:35 +09007219
7220 if (i < chunk_count ||
7221 total_size_written > ksmbd_server_side_copy_max_total_size()) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007222 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7223 return -EINVAL;
7224 }
7225
7226 src_fp = ksmbd_lookup_foreign_fd(work,
Namjae Jeon070fb212021-05-26 17:57:12 +09007227 le64_to_cpu(ci_req->ResumeKey[0]));
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007228 dst_fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
Namjae Jeone2f34482021-03-16 10:49:09 +09007229 ret = -EINVAL;
Namjae Jeon64b39f42021-03-30 14:25:35 +09007230 if (!src_fp ||
7231 src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007232 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7233 goto out;
7234 }
Namjae Jeon64b39f42021-03-30 14:25:35 +09007235
Namjae Jeone2f34482021-03-16 10:49:09 +09007236 if (!dst_fp) {
7237 rsp->hdr.Status = STATUS_FILE_CLOSED;
7238 goto out;
7239 }
7240
7241 /*
7242 * FILE_READ_DATA should only be included in
7243 * the FSCTL_COPYCHUNK case
7244 */
Namjae Jeon070fb212021-05-26 17:57:12 +09007245 if (cnt_code == FSCTL_COPYCHUNK &&
7246 !(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007247 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7248 goto out;
7249 }
7250
7251 ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp,
Namjae Jeon070fb212021-05-26 17:57:12 +09007252 chunks, chunk_count,
7253 &chunk_count_written,
7254 &chunk_size_written,
7255 &total_size_written);
Namjae Jeone2f34482021-03-16 10:49:09 +09007256 if (ret < 0) {
7257 if (ret == -EACCES)
7258 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7259 if (ret == -EAGAIN)
7260 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
7261 else if (ret == -EBADF)
7262 rsp->hdr.Status = STATUS_INVALID_HANDLE;
7263 else if (ret == -EFBIG || ret == -ENOSPC)
7264 rsp->hdr.Status = STATUS_DISK_FULL;
7265 else if (ret == -EINVAL)
7266 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7267 else if (ret == -EISDIR)
7268 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
7269 else if (ret == -E2BIG)
7270 rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE;
7271 else
7272 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
7273 }
7274
7275 ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written);
7276 ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written);
7277 ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written);
7278out:
7279 ksmbd_fd_put(work, src_fp);
7280 ksmbd_fd_put(work, dst_fp);
7281 return ret;
7282}
7283
7284static __be32 idev_ipv4_address(struct in_device *idev)
7285{
7286 __be32 addr = 0;
7287
7288 struct in_ifaddr *ifa;
7289
7290 rcu_read_lock();
7291 in_dev_for_each_ifa_rcu(ifa, idev) {
7292 if (ifa->ifa_flags & IFA_F_SECONDARY)
7293 continue;
7294
7295 addr = ifa->ifa_address;
7296 break;
7297 }
7298 rcu_read_unlock();
7299 return addr;
7300}
7301
7302static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn,
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007303 struct smb2_ioctl_rsp *rsp,
7304 unsigned int out_buf_len)
Namjae Jeone2f34482021-03-16 10:49:09 +09007305{
7306 struct network_interface_info_ioctl_rsp *nii_rsp = NULL;
7307 int nbytes = 0;
7308 struct net_device *netdev;
7309 struct sockaddr_storage_rsp *sockaddr_storage;
7310 unsigned int flags;
7311 unsigned long long speed;
7312
7313 rtnl_lock();
7314 for_each_netdev(&init_net, netdev) {
Namjae Jeon71cd9cb2021-12-16 10:31:44 +09007315 bool ipv4_set = false;
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007316
Namjae Jeone2f34482021-03-16 10:49:09 +09007317 if (netdev->type == ARPHRD_LOOPBACK)
7318 continue;
7319
7320 flags = dev_get_flags(netdev);
7321 if (!(flags & IFF_RUNNING))
7322 continue;
Namjae Jeon71cd9cb2021-12-16 10:31:44 +09007323ipv6_retry:
7324 if (out_buf_len <
7325 nbytes + sizeof(struct network_interface_info_ioctl_rsp)) {
7326 rtnl_unlock();
7327 return -ENOSPC;
7328 }
Namjae Jeone2f34482021-03-16 10:49:09 +09007329
7330 nii_rsp = (struct network_interface_info_ioctl_rsp *)
7331 &rsp->Buffer[nbytes];
7332 nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex);
7333
Hyunchul Lee03d8d4f2021-07-13 16:09:34 +09007334 nii_rsp->Capability = 0;
Namjae Jeona58b45a2021-12-16 10:26:43 +09007335 if (netdev->real_num_tx_queues > 1)
7336 nii_rsp->Capability |= cpu_to_le32(RSS_CAPABLE);
Hyunchul Lee03d8d4f2021-07-13 16:09:34 +09007337 if (ksmbd_rdma_capable_netdev(netdev))
7338 nii_rsp->Capability |= cpu_to_le32(RDMA_CAPABLE);
Namjae Jeone2f34482021-03-16 10:49:09 +09007339
7340 nii_rsp->Next = cpu_to_le32(152);
7341 nii_rsp->Reserved = 0;
7342
7343 if (netdev->ethtool_ops->get_link_ksettings) {
7344 struct ethtool_link_ksettings cmd;
7345
7346 netdev->ethtool_ops->get_link_ksettings(netdev, &cmd);
7347 speed = cmd.base.speed;
7348 } else {
Per Forlind4758662021-08-30 13:23:04 +09007349 ksmbd_debug(SMB, "%s %s\n", netdev->name,
7350 "speed is unknown, defaulting to 1Gb/sec");
Namjae Jeone2f34482021-03-16 10:49:09 +09007351 speed = SPEED_1000;
7352 }
7353
7354 speed *= 1000000;
7355 nii_rsp->LinkSpeed = cpu_to_le64(speed);
7356
7357 sockaddr_storage = (struct sockaddr_storage_rsp *)
7358 nii_rsp->SockAddr_Storage;
7359 memset(sockaddr_storage, 0, 128);
7360
Namjae Jeon71cd9cb2021-12-16 10:31:44 +09007361 if (!ipv4_set) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007362 struct in_device *idev;
7363
7364 sockaddr_storage->Family = cpu_to_le16(INTERNETWORK);
7365 sockaddr_storage->addr4.Port = 0;
7366
7367 idev = __in_dev_get_rtnl(netdev);
7368 if (!idev)
7369 continue;
7370 sockaddr_storage->addr4.IPv4address =
7371 idev_ipv4_address(idev);
Namjae Jeon71cd9cb2021-12-16 10:31:44 +09007372 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7373 ipv4_set = true;
7374 goto ipv6_retry;
Namjae Jeone2f34482021-03-16 10:49:09 +09007375 } else {
7376 struct inet6_dev *idev6;
7377 struct inet6_ifaddr *ifa;
7378 __u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address;
7379
7380 sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6);
7381 sockaddr_storage->addr6.Port = 0;
7382 sockaddr_storage->addr6.FlowInfo = 0;
7383
7384 idev6 = __in6_dev_get(netdev);
7385 if (!idev6)
7386 continue;
7387
7388 list_for_each_entry(ifa, &idev6->addr_list, if_list) {
7389 if (ifa->flags & (IFA_F_TENTATIVE |
7390 IFA_F_DEPRECATED))
7391 continue;
7392 memcpy(ipv6_addr, ifa->addr.s6_addr, 16);
7393 break;
7394 }
7395 sockaddr_storage->addr6.ScopeId = 0;
Namjae Jeon71cd9cb2021-12-16 10:31:44 +09007396 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
Namjae Jeone2f34482021-03-16 10:49:09 +09007397 }
Namjae Jeone2f34482021-03-16 10:49:09 +09007398 }
7399 rtnl_unlock();
7400
7401 /* zero if this is last one */
7402 if (nii_rsp)
7403 nii_rsp->Next = 0;
7404
Paulo Alcantara2d004c62022-03-21 13:08:26 -03007405 rsp->PersistentFileId = SMB2_NO_FID;
7406 rsp->VolatileFileId = SMB2_NO_FID;
Namjae Jeone2f34482021-03-16 10:49:09 +09007407 return nbytes;
7408}
7409
Namjae Jeone2f34482021-03-16 10:49:09 +09007410static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn,
Namjae Jeon070fb212021-05-26 17:57:12 +09007411 struct validate_negotiate_info_req *neg_req,
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007412 struct validate_negotiate_info_rsp *neg_rsp,
7413 unsigned int in_buf_len)
Namjae Jeone2f34482021-03-16 10:49:09 +09007414{
7415 int ret = 0;
7416 int dialect;
7417
Marios Makassikis78f16882021-10-28 21:01:27 +02007418 if (in_buf_len < offsetof(struct validate_negotiate_info_req, Dialects) +
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007419 le16_to_cpu(neg_req->DialectCount) * sizeof(__le16))
7420 return -EINVAL;
7421
Namjae Jeone2f34482021-03-16 10:49:09 +09007422 dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects,
Namjae Jeon070fb212021-05-26 17:57:12 +09007423 neg_req->DialectCount);
Namjae Jeone2f34482021-03-16 10:49:09 +09007424 if (dialect == BAD_PROT_ID || dialect != conn->dialect) {
7425 ret = -EINVAL;
7426 goto err_out;
7427 }
7428
7429 if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) {
7430 ret = -EINVAL;
7431 goto err_out;
7432 }
7433
7434 if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) {
7435 ret = -EINVAL;
7436 goto err_out;
7437 }
7438
7439 if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) {
7440 ret = -EINVAL;
7441 goto err_out;
7442 }
7443
7444 neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
7445 memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE);
7446 neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode);
7447 neg_rsp->Dialect = cpu_to_le16(conn->dialect);
7448err_out:
7449 return ret;
7450}
7451
Namjae Jeon64b39f42021-03-30 14:25:35 +09007452static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id,
Namjae Jeon070fb212021-05-26 17:57:12 +09007453 struct file_allocated_range_buffer *qar_req,
7454 struct file_allocated_range_buffer *qar_rsp,
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007455 unsigned int in_count, unsigned int *out_count)
Namjae Jeone2f34482021-03-16 10:49:09 +09007456{
7457 struct ksmbd_file *fp;
7458 loff_t start, length;
7459 int ret = 0;
7460
7461 *out_count = 0;
7462 if (in_count == 0)
7463 return -EINVAL;
7464
7465 fp = ksmbd_lookup_fd_fast(work, id);
7466 if (!fp)
7467 return -ENOENT;
7468
7469 start = le64_to_cpu(qar_req->file_offset);
7470 length = le64_to_cpu(qar_req->length);
7471
7472 ret = ksmbd_vfs_fqar_lseek(fp, start, length,
Namjae Jeon070fb212021-05-26 17:57:12 +09007473 qar_rsp, in_count, out_count);
Namjae Jeone2f34482021-03-16 10:49:09 +09007474 if (ret && ret != -E2BIG)
7475 *out_count = 0;
7476
7477 ksmbd_fd_put(work, fp);
7478 return ret;
7479}
7480
Namjae Jeon64b39f42021-03-30 14:25:35 +09007481static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id,
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007482 unsigned int out_buf_len,
7483 struct smb2_ioctl_req *req,
Namjae Jeon070fb212021-05-26 17:57:12 +09007484 struct smb2_ioctl_rsp *rsp)
Namjae Jeone2f34482021-03-16 10:49:09 +09007485{
7486 struct ksmbd_rpc_command *rpc_resp;
7487 char *data_buf = (char *)&req->Buffer[0];
7488 int nbytes = 0;
7489
Namjae Jeon64b39f42021-03-30 14:25:35 +09007490 rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf,
Namjae Jeon070fb212021-05-26 17:57:12 +09007491 le32_to_cpu(req->InputCount));
Namjae Jeone2f34482021-03-16 10:49:09 +09007492 if (rpc_resp) {
7493 if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) {
7494 /*
7495 * set STATUS_SOME_NOT_MAPPED response
7496 * for unknown domain sid.
7497 */
7498 rsp->hdr.Status = STATUS_SOME_NOT_MAPPED;
7499 } else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
7500 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7501 goto out;
7502 } else if (rpc_resp->flags != KSMBD_RPC_OK) {
7503 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7504 goto out;
7505 }
7506
7507 nbytes = rpc_resp->payload_sz;
7508 if (rpc_resp->payload_sz > out_buf_len) {
7509 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7510 nbytes = out_buf_len;
7511 }
7512
7513 if (!rpc_resp->payload_sz) {
7514 rsp->hdr.Status =
7515 STATUS_UNEXPECTED_IO_ERROR;
7516 goto out;
7517 }
7518
7519 memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes);
7520 }
7521out:
Namjae Jeon79f6b112021-04-02 12:47:14 +09007522 kvfree(rpc_resp);
Namjae Jeone2f34482021-03-16 10:49:09 +09007523 return nbytes;
7524}
7525
Namjae Jeon64b39f42021-03-30 14:25:35 +09007526static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id,
Namjae Jeon070fb212021-05-26 17:57:12 +09007527 struct file_sparse *sparse)
Namjae Jeone2f34482021-03-16 10:49:09 +09007528{
7529 struct ksmbd_file *fp;
Hyunchul Lee465d7202021-07-03 12:10:36 +09007530 struct user_namespace *user_ns;
Namjae Jeone2f34482021-03-16 10:49:09 +09007531 int ret = 0;
7532 __le32 old_fattr;
7533
7534 fp = ksmbd_lookup_fd_fast(work, id);
7535 if (!fp)
7536 return -ENOENT;
Hyunchul Lee465d7202021-07-03 12:10:36 +09007537 user_ns = file_mnt_user_ns(fp->filp);
Namjae Jeone2f34482021-03-16 10:49:09 +09007538
7539 old_fattr = fp->f_ci->m_fattr;
7540 if (sparse->SetSparse)
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09007541 fp->f_ci->m_fattr |= FILE_ATTRIBUTE_SPARSE_FILE_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09007542 else
Ronnie Sahlberg26a27872021-11-03 08:45:52 +09007543 fp->f_ci->m_fattr &= ~FILE_ATTRIBUTE_SPARSE_FILE_LE;
Namjae Jeone2f34482021-03-16 10:49:09 +09007544
7545 if (fp->f_ci->m_fattr != old_fattr &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09007546 test_share_config_flag(work->tcon->share_conf,
7547 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007548 struct xattr_dos_attrib da;
7549
Hyunchul Lee465d7202021-07-03 12:10:36 +09007550 ret = ksmbd_vfs_get_dos_attrib_xattr(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09007551 fp->filp->f_path.dentry, &da);
Namjae Jeone2f34482021-03-16 10:49:09 +09007552 if (ret <= 0)
7553 goto out;
7554
7555 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
Hyunchul Lee465d7202021-07-03 12:10:36 +09007556 ret = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
Hyunchul Leeaf349832021-06-30 18:25:53 +09007557 fp->filp->f_path.dentry, &da);
Namjae Jeone2f34482021-03-16 10:49:09 +09007558 if (ret)
7559 fp->f_ci->m_fattr = old_fattr;
7560 }
7561
7562out:
7563 ksmbd_fd_put(work, fp);
7564 return ret;
7565}
7566
7567static int fsctl_request_resume_key(struct ksmbd_work *work,
Namjae Jeon070fb212021-05-26 17:57:12 +09007568 struct smb2_ioctl_req *req,
7569 struct resume_key_ioctl_rsp *key_rsp)
Namjae Jeone2f34482021-03-16 10:49:09 +09007570{
7571 struct ksmbd_file *fp;
7572
Paulo Alcantara2d004c62022-03-21 13:08:26 -03007573 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
Namjae Jeone2f34482021-03-16 10:49:09 +09007574 if (!fp)
7575 return -ENOENT;
7576
7577 memset(key_rsp, 0, sizeof(*key_rsp));
7578 key_rsp->ResumeKey[0] = req->VolatileFileId;
7579 key_rsp->ResumeKey[1] = req->PersistentFileId;
7580 ksmbd_fd_put(work, fp);
7581
7582 return 0;
7583}
7584
7585/**
7586 * smb2_ioctl() - handler for smb2 ioctl command
7587 * @work: smb work containing ioctl command buffer
7588 *
7589 * Return: 0 on success, otherwise error
7590 */
7591int smb2_ioctl(struct ksmbd_work *work)
7592{
7593 struct smb2_ioctl_req *req;
Namjae Jeoncb451722021-11-03 08:08:44 +09007594 struct smb2_ioctl_rsp *rsp;
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007595 unsigned int cnt_code, nbytes = 0, out_buf_len, in_buf_len;
Namjae Jeon64b39f42021-03-30 14:25:35 +09007596 u64 id = KSMBD_NO_FID;
Namjae Jeone2f34482021-03-16 10:49:09 +09007597 struct ksmbd_conn *conn = work->conn;
7598 int ret = 0;
7599
Namjae Jeone2f34482021-03-16 10:49:09 +09007600 if (work->next_smb2_rcv_hdr_off) {
Namjae Jeon8a893312021-06-25 13:43:37 +09007601 req = ksmbd_req_buf_next(work);
7602 rsp = ksmbd_resp_buf_next(work);
Paulo Alcantara2d004c62022-03-21 13:08:26 -03007603 if (!has_file_id(req->VolatileFileId)) {
Namjae Jeon38673692021-07-08 12:32:27 +09007604 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09007605 work->compound_fid);
Namjae Jeone2f34482021-03-16 10:49:09 +09007606 id = work->compound_fid;
7607 }
7608 } else {
Namjae Jeoncb451722021-11-03 08:08:44 +09007609 req = smb2_get_msg(work->request_buf);
7610 rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09007611 }
7612
Namjae Jeon38673692021-07-08 12:32:27 +09007613 if (!has_file_id(id))
Paulo Alcantara2d004c62022-03-21 13:08:26 -03007614 id = req->VolatileFileId;
Namjae Jeone2f34482021-03-16 10:49:09 +09007615
7616 if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) {
7617 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7618 goto out;
7619 }
7620
Steve French15e7b6d2022-03-26 12:47:57 -05007621 cnt_code = le32_to_cpu(req->CtlCode);
Hyunchul Lee34061d62021-10-16 08:39:54 +09007622 ret = smb2_calc_max_out_buf_len(work, 48,
7623 le32_to_cpu(req->MaxOutputResponse));
7624 if (ret < 0) {
7625 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7626 goto out;
7627 }
7628 out_buf_len = (unsigned int)ret;
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007629 in_buf_len = le32_to_cpu(req->InputCount);
Namjae Jeone2f34482021-03-16 10:49:09 +09007630
7631 switch (cnt_code) {
7632 case FSCTL_DFS_GET_REFERRALS:
7633 case FSCTL_DFS_GET_REFERRALS_EX:
7634 /* Not support DFS yet */
7635 rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED;
7636 goto out;
7637 case FSCTL_CREATE_OR_GET_OBJECT_ID:
7638 {
7639 struct file_object_buf_type1_ioctl_rsp *obj_buf;
7640
7641 nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp);
7642 obj_buf = (struct file_object_buf_type1_ioctl_rsp *)
7643 &rsp->Buffer[0];
7644
7645 /*
7646 * TODO: This is dummy implementation to pass smbtorture
7647 * Need to check correct response later
7648 */
7649 memset(obj_buf->ObjectId, 0x0, 16);
7650 memset(obj_buf->BirthVolumeId, 0x0, 16);
7651 memset(obj_buf->BirthObjectId, 0x0, 16);
7652 memset(obj_buf->DomainId, 0x0, 16);
7653
7654 break;
7655 }
7656 case FSCTL_PIPE_TRANSCEIVE:
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007657 out_buf_len = min_t(u32, KSMBD_IPC_MAX_PAYLOAD, out_buf_len);
Namjae Jeone2f34482021-03-16 10:49:09 +09007658 nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp);
7659 break;
7660 case FSCTL_VALIDATE_NEGOTIATE_INFO:
7661 if (conn->dialect < SMB30_PROT_ID) {
7662 ret = -EOPNOTSUPP;
7663 goto out;
7664 }
7665
Zhang Xiaoxub1763d22022-09-26 11:36:30 +08007666 if (in_buf_len < offsetof(struct validate_negotiate_info_req,
7667 Dialects)) {
7668 ret = -EINVAL;
7669 goto out;
7670 }
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007671
Zhang Xiaoxub1763d22022-09-26 11:36:30 +08007672 if (out_buf_len < sizeof(struct validate_negotiate_info_rsp)) {
7673 ret = -EINVAL;
7674 goto out;
7675 }
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007676
Namjae Jeone2f34482021-03-16 10:49:09 +09007677 ret = fsctl_validate_negotiate_info(conn,
7678 (struct validate_negotiate_info_req *)&req->Buffer[0],
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007679 (struct validate_negotiate_info_rsp *)&rsp->Buffer[0],
7680 in_buf_len);
Namjae Jeone2f34482021-03-16 10:49:09 +09007681 if (ret < 0)
7682 goto out;
7683
7684 nbytes = sizeof(struct validate_negotiate_info_rsp);
Paulo Alcantara2d004c62022-03-21 13:08:26 -03007685 rsp->PersistentFileId = SMB2_NO_FID;
7686 rsp->VolatileFileId = SMB2_NO_FID;
Namjae Jeone2f34482021-03-16 10:49:09 +09007687 break;
7688 case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007689 ret = fsctl_query_iface_info_ioctl(conn, rsp, out_buf_len);
7690 if (ret < 0)
Namjae Jeone2f34482021-03-16 10:49:09 +09007691 goto out;
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007692 nbytes = ret;
Namjae Jeone2f34482021-03-16 10:49:09 +09007693 break;
7694 case FSCTL_REQUEST_RESUME_KEY:
7695 if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) {
7696 ret = -EINVAL;
7697 goto out;
7698 }
7699
7700 ret = fsctl_request_resume_key(work, req,
Namjae Jeon070fb212021-05-26 17:57:12 +09007701 (struct resume_key_ioctl_rsp *)&rsp->Buffer[0]);
Namjae Jeone2f34482021-03-16 10:49:09 +09007702 if (ret < 0)
7703 goto out;
7704 rsp->PersistentFileId = req->PersistentFileId;
7705 rsp->VolatileFileId = req->VolatileFileId;
7706 nbytes = sizeof(struct resume_key_ioctl_rsp);
7707 break;
7708 case FSCTL_COPYCHUNK:
7709 case FSCTL_COPYCHUNK_WRITE:
Namjae Jeon64b39f42021-03-30 14:25:35 +09007710 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007711 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09007712 "User does not have write permission\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09007713 ret = -EACCES;
7714 goto out;
7715 }
7716
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007717 if (in_buf_len < sizeof(struct copychunk_ioctl_req)) {
7718 ret = -EINVAL;
7719 goto out;
7720 }
7721
Namjae Jeone2f34482021-03-16 10:49:09 +09007722 if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) {
7723 ret = -EINVAL;
7724 goto out;
7725 }
7726
7727 nbytes = sizeof(struct copychunk_ioctl_rsp);
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007728 rsp->VolatileFileId = req->VolatileFileId;
7729 rsp->PersistentFileId = req->PersistentFileId;
7730 fsctl_copychunk(work,
7731 (struct copychunk_ioctl_req *)&req->Buffer[0],
Steve French15e7b6d2022-03-26 12:47:57 -05007732 le32_to_cpu(req->CtlCode),
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007733 le32_to_cpu(req->InputCount),
Paulo Alcantara2d004c62022-03-21 13:08:26 -03007734 req->VolatileFileId,
7735 req->PersistentFileId,
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007736 rsp);
Namjae Jeone2f34482021-03-16 10:49:09 +09007737 break;
7738 case FSCTL_SET_SPARSE:
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007739 if (in_buf_len < sizeof(struct file_sparse)) {
7740 ret = -EINVAL;
7741 goto out;
7742 }
7743
Namjae Jeone2f34482021-03-16 10:49:09 +09007744 ret = fsctl_set_sparse(work, id,
Namjae Jeon070fb212021-05-26 17:57:12 +09007745 (struct file_sparse *)&req->Buffer[0]);
Namjae Jeone2f34482021-03-16 10:49:09 +09007746 if (ret < 0)
7747 goto out;
7748 break;
7749 case FSCTL_SET_ZERO_DATA:
7750 {
7751 struct file_zero_data_information *zero_data;
7752 struct ksmbd_file *fp;
Namjae Jeonb5e5f9d2022-06-19 22:37:17 +09007753 loff_t off, len, bfz;
Namjae Jeone2f34482021-03-16 10:49:09 +09007754
Namjae Jeon64b39f42021-03-30 14:25:35 +09007755 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007756 ksmbd_debug(SMB,
Namjae Jeon070fb212021-05-26 17:57:12 +09007757 "User does not have write permission\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09007758 ret = -EACCES;
7759 goto out;
7760 }
7761
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007762 if (in_buf_len < sizeof(struct file_zero_data_information)) {
7763 ret = -EINVAL;
7764 goto out;
7765 }
7766
Namjae Jeone2f34482021-03-16 10:49:09 +09007767 zero_data =
7768 (struct file_zero_data_information *)&req->Buffer[0];
7769
Namjae Jeonb5e5f9d2022-06-19 22:37:17 +09007770 off = le64_to_cpu(zero_data->FileOffset);
7771 bfz = le64_to_cpu(zero_data->BeyondFinalZero);
7772 if (off > bfz) {
7773 ret = -EINVAL;
Namjae Jeone2f34482021-03-16 10:49:09 +09007774 goto out;
7775 }
7776
Namjae Jeonb5e5f9d2022-06-19 22:37:17 +09007777 len = bfz - off;
7778 if (len) {
7779 fp = ksmbd_lookup_fd_fast(work, id);
7780 if (!fp) {
7781 ret = -ENOENT;
7782 goto out;
7783 }
Namjae Jeone2f34482021-03-16 10:49:09 +09007784
Namjae Jeonb5e5f9d2022-06-19 22:37:17 +09007785 ret = ksmbd_vfs_zero_data(work, fp, off, len);
7786 ksmbd_fd_put(work, fp);
7787 if (ret < 0)
7788 goto out;
7789 }
Namjae Jeone2f34482021-03-16 10:49:09 +09007790 break;
7791 }
7792 case FSCTL_QUERY_ALLOCATED_RANGES:
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007793 if (in_buf_len < sizeof(struct file_allocated_range_buffer)) {
7794 ret = -EINVAL;
7795 goto out;
7796 }
7797
Namjae Jeone2f34482021-03-16 10:49:09 +09007798 ret = fsctl_query_allocated_ranges(work, id,
7799 (struct file_allocated_range_buffer *)&req->Buffer[0],
7800 (struct file_allocated_range_buffer *)&rsp->Buffer[0],
7801 out_buf_len /
7802 sizeof(struct file_allocated_range_buffer), &nbytes);
7803 if (ret == -E2BIG) {
7804 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7805 } else if (ret < 0) {
7806 nbytes = 0;
7807 goto out;
7808 }
7809
7810 nbytes *= sizeof(struct file_allocated_range_buffer);
7811 break;
7812 case FSCTL_GET_REPARSE_POINT:
7813 {
7814 struct reparse_data_buffer *reparse_ptr;
7815 struct ksmbd_file *fp;
7816
7817 reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0];
7818 fp = ksmbd_lookup_fd_fast(work, id);
7819 if (!fp) {
Namjae Jeonbde16942021-06-28 15:23:19 +09007820 pr_err("not found fp!!\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09007821 ret = -ENOENT;
7822 goto out;
7823 }
7824
7825 reparse_ptr->ReparseTag =
Namjae Jeonab0b2632021-06-29 09:20:13 +09007826 smb2_get_reparse_tag_special_file(file_inode(fp->filp)->i_mode);
Namjae Jeone2f34482021-03-16 10:49:09 +09007827 reparse_ptr->ReparseDataLength = 0;
7828 ksmbd_fd_put(work, fp);
7829 nbytes = sizeof(struct reparse_data_buffer);
7830 break;
7831 }
Namjae Jeoneb817362021-05-18 10:37:59 +09007832 case FSCTL_DUPLICATE_EXTENTS_TO_FILE:
7833 {
7834 struct ksmbd_file *fp_in, *fp_out = NULL;
7835 struct duplicate_extents_to_file *dup_ext;
7836 loff_t src_off, dst_off, length, cloned;
7837
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007838 if (in_buf_len < sizeof(struct duplicate_extents_to_file)) {
7839 ret = -EINVAL;
7840 goto out;
7841 }
7842
Namjae Jeoneb817362021-05-18 10:37:59 +09007843 dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0];
7844
7845 fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle,
Namjae Jeon070fb212021-05-26 17:57:12 +09007846 dup_ext->PersistentFileHandle);
Namjae Jeoneb817362021-05-18 10:37:59 +09007847 if (!fp_in) {
Namjae Jeonbde16942021-06-28 15:23:19 +09007848 pr_err("not found file handle in duplicate extent to file\n");
Namjae Jeoneb817362021-05-18 10:37:59 +09007849 ret = -ENOENT;
7850 goto out;
7851 }
7852
7853 fp_out = ksmbd_lookup_fd_fast(work, id);
7854 if (!fp_out) {
Namjae Jeonbde16942021-06-28 15:23:19 +09007855 pr_err("not found fp\n");
Namjae Jeoneb817362021-05-18 10:37:59 +09007856 ret = -ENOENT;
7857 goto dup_ext_out;
7858 }
7859
7860 src_off = le64_to_cpu(dup_ext->SourceFileOffset);
7861 dst_off = le64_to_cpu(dup_ext->TargetFileOffset);
7862 length = le64_to_cpu(dup_ext->ByteCount);
Amir Goldstein868f9f22022-06-30 22:58:49 +03007863 /*
7864 * XXX: It is not clear if FSCTL_DUPLICATE_EXTENTS_TO_FILE
7865 * should fall back to vfs_copy_file_range(). This could be
7866 * beneficial when re-exporting nfs/smb mount, but note that
7867 * this can result in partial copy that returns an error status.
7868 * If/when FSCTL_DUPLICATE_EXTENTS_TO_FILE_EX is implemented,
7869 * fall back to vfs_copy_file_range(), should be avoided when
7870 * the flag DUPLICATE_EXTENTS_DATA_EX_SOURCE_ATOMIC is set.
7871 */
7872 cloned = vfs_clone_file_range(fp_in->filp, src_off,
7873 fp_out->filp, dst_off, length, 0);
Namjae Jeoneb817362021-05-18 10:37:59 +09007874 if (cloned == -EXDEV || cloned == -EOPNOTSUPP) {
7875 ret = -EOPNOTSUPP;
7876 goto dup_ext_out;
7877 } else if (cloned != length) {
Namjae Jeonf8524772021-06-18 10:28:00 +09007878 cloned = vfs_copy_file_range(fp_in->filp, src_off,
Amir Goldstein868f9f22022-06-30 22:58:49 +03007879 fp_out->filp, dst_off,
7880 length, 0);
Namjae Jeoneb817362021-05-18 10:37:59 +09007881 if (cloned != length) {
7882 if (cloned < 0)
7883 ret = cloned;
7884 else
7885 ret = -EINVAL;
7886 }
7887 }
7888
7889dup_ext_out:
7890 ksmbd_fd_put(work, fp_in);
7891 ksmbd_fd_put(work, fp_out);
7892 if (ret < 0)
7893 goto out;
7894 break;
7895 }
Namjae Jeone2f34482021-03-16 10:49:09 +09007896 default:
7897 ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09007898 cnt_code);
Namjae Jeone2f34482021-03-16 10:49:09 +09007899 ret = -EOPNOTSUPP;
7900 goto out;
7901 }
7902
Steve French15e7b6d2022-03-26 12:47:57 -05007903 rsp->CtlCode = cpu_to_le32(cnt_code);
Namjae Jeone2f34482021-03-16 10:49:09 +09007904 rsp->InputCount = cpu_to_le32(0);
7905 rsp->InputOffset = cpu_to_le32(112);
7906 rsp->OutputOffset = cpu_to_le32(112);
7907 rsp->OutputCount = cpu_to_le32(nbytes);
7908 rsp->StructureSize = cpu_to_le16(49);
7909 rsp->Reserved = cpu_to_le16(0);
7910 rsp->Flags = cpu_to_le32(0);
7911 rsp->Reserved2 = cpu_to_le32(0);
Namjae Jeoncb451722021-11-03 08:08:44 +09007912 inc_rfc1001_len(work->response_buf, 48 + nbytes);
Namjae Jeone2f34482021-03-16 10:49:09 +09007913
7914 return 0;
7915
7916out:
7917 if (ret == -EACCES)
7918 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7919 else if (ret == -ENOENT)
7920 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7921 else if (ret == -EOPNOTSUPP)
7922 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
Namjae Jeonf7db8fd2021-10-08 07:31:03 +09007923 else if (ret == -ENOSPC)
7924 rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL;
Namjae Jeone2f34482021-03-16 10:49:09 +09007925 else if (ret < 0 || rsp->hdr.Status == 0)
7926 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7927 smb2_set_err_rsp(work);
7928 return 0;
7929}
7930
7931/**
7932 * smb20_oplock_break_ack() - handler for smb2.0 oplock break command
7933 * @work: smb work containing oplock break command buffer
7934 *
7935 * Return: 0
7936 */
7937static void smb20_oplock_break_ack(struct ksmbd_work *work)
7938{
Namjae Jeoncb451722021-11-03 08:08:44 +09007939 struct smb2_oplock_break *req = smb2_get_msg(work->request_buf);
7940 struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09007941 struct ksmbd_file *fp;
7942 struct oplock_info *opinfo = NULL;
7943 __le32 err = 0;
7944 int ret = 0;
Namjae Jeon64b39f42021-03-30 14:25:35 +09007945 u64 volatile_id, persistent_id;
Namjae Jeone2f34482021-03-16 10:49:09 +09007946 char req_oplevel = 0, rsp_oplevel = 0;
7947 unsigned int oplock_change_type;
7948
Steve Frenchc7803b02022-03-28 17:45:55 -05007949 volatile_id = req->VolatileFid;
7950 persistent_id = req->PersistentFid;
Namjae Jeone2f34482021-03-16 10:49:09 +09007951 req_oplevel = req->OplockLevel;
7952 ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n",
7953 volatile_id, persistent_id, req_oplevel);
7954
7955 fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7956 if (!fp) {
7957 rsp->hdr.Status = STATUS_FILE_CLOSED;
7958 smb2_set_err_rsp(work);
7959 return;
7960 }
7961
7962 opinfo = opinfo_get(fp);
7963 if (!opinfo) {
Namjae Jeonbde16942021-06-28 15:23:19 +09007964 pr_err("unexpected null oplock_info\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09007965 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7966 smb2_set_err_rsp(work);
7967 ksmbd_fd_put(work, fp);
7968 return;
7969 }
7970
7971 if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) {
7972 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7973 goto err_out;
7974 }
7975
7976 if (opinfo->op_state == OPLOCK_STATE_NONE) {
7977 ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state);
7978 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7979 goto err_out;
7980 }
7981
Namjae Jeon64b39f42021-03-30 14:25:35 +09007982 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7983 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7984 (req_oplevel != SMB2_OPLOCK_LEVEL_II &&
7985 req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007986 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7987 oplock_change_type = OPLOCK_WRITE_TO_NONE;
Namjae Jeon64b39f42021-03-30 14:25:35 +09007988 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7989 req_oplevel != SMB2_OPLOCK_LEVEL_NONE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007990 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7991 oplock_change_type = OPLOCK_READ_TO_NONE;
Namjae Jeon64b39f42021-03-30 14:25:35 +09007992 } else if (req_oplevel == SMB2_OPLOCK_LEVEL_II ||
7993 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007994 err = STATUS_INVALID_DEVICE_STATE;
Namjae Jeon64b39f42021-03-30 14:25:35 +09007995 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7996 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7997 req_oplevel == SMB2_OPLOCK_LEVEL_II) {
Namjae Jeone2f34482021-03-16 10:49:09 +09007998 oplock_change_type = OPLOCK_WRITE_TO_READ;
Namjae Jeon64b39f42021-03-30 14:25:35 +09007999 } else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
8000 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
8001 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09008002 oplock_change_type = OPLOCK_WRITE_TO_NONE;
Namjae Jeon64b39f42021-03-30 14:25:35 +09008003 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
8004 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09008005 oplock_change_type = OPLOCK_READ_TO_NONE;
Namjae Jeon64b39f42021-03-30 14:25:35 +09008006 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09008007 oplock_change_type = 0;
Namjae Jeon64b39f42021-03-30 14:25:35 +09008008 }
8009 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09008010 oplock_change_type = 0;
Namjae Jeon64b39f42021-03-30 14:25:35 +09008011 }
Namjae Jeone2f34482021-03-16 10:49:09 +09008012
8013 switch (oplock_change_type) {
8014 case OPLOCK_WRITE_TO_READ:
8015 ret = opinfo_write_to_read(opinfo);
8016 rsp_oplevel = SMB2_OPLOCK_LEVEL_II;
8017 break;
8018 case OPLOCK_WRITE_TO_NONE:
8019 ret = opinfo_write_to_none(opinfo);
8020 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
8021 break;
8022 case OPLOCK_READ_TO_NONE:
8023 ret = opinfo_read_to_none(opinfo);
8024 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
8025 break;
8026 default:
Namjae Jeonbde16942021-06-28 15:23:19 +09008027 pr_err("unknown oplock change 0x%x -> 0x%x\n",
8028 opinfo->level, rsp_oplevel);
Namjae Jeone2f34482021-03-16 10:49:09 +09008029 }
8030
8031 if (ret < 0) {
8032 rsp->hdr.Status = err;
8033 goto err_out;
8034 }
8035
8036 opinfo_put(opinfo);
8037 ksmbd_fd_put(work, fp);
8038 opinfo->op_state = OPLOCK_STATE_NONE;
8039 wake_up_interruptible_all(&opinfo->oplock_q);
8040
8041 rsp->StructureSize = cpu_to_le16(24);
8042 rsp->OplockLevel = rsp_oplevel;
8043 rsp->Reserved = 0;
8044 rsp->Reserved2 = 0;
Steve Frenchc7803b02022-03-28 17:45:55 -05008045 rsp->VolatileFid = volatile_id;
8046 rsp->PersistentFid = persistent_id;
Namjae Jeoncb451722021-11-03 08:08:44 +09008047 inc_rfc1001_len(work->response_buf, 24);
Namjae Jeone2f34482021-03-16 10:49:09 +09008048 return;
8049
8050err_out:
8051 opinfo->op_state = OPLOCK_STATE_NONE;
8052 wake_up_interruptible_all(&opinfo->oplock_q);
8053
8054 opinfo_put(opinfo);
8055 ksmbd_fd_put(work, fp);
8056 smb2_set_err_rsp(work);
8057}
8058
8059static int check_lease_state(struct lease *lease, __le32 req_state)
8060{
8061 if ((lease->new_state ==
Namjae Jeon64b39f42021-03-30 14:25:35 +09008062 (SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) &&
8063 !(req_state & SMB2_LEASE_WRITE_CACHING_LE)) {
Namjae Jeone2f34482021-03-16 10:49:09 +09008064 lease->new_state = req_state;
8065 return 0;
8066 }
8067
8068 if (lease->new_state == req_state)
8069 return 0;
8070
8071 return 1;
8072}
8073
8074/**
8075 * smb21_lease_break_ack() - handler for smb2.1 lease break command
8076 * @work: smb work containing lease break command buffer
8077 *
8078 * Return: 0
8079 */
8080static void smb21_lease_break_ack(struct ksmbd_work *work)
8081{
8082 struct ksmbd_conn *conn = work->conn;
Namjae Jeoncb451722021-11-03 08:08:44 +09008083 struct smb2_lease_ack *req = smb2_get_msg(work->request_buf);
8084 struct smb2_lease_ack *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008085 struct oplock_info *opinfo;
8086 __le32 err = 0;
8087 int ret = 0;
8088 unsigned int lease_change_type;
8089 __le32 lease_state;
8090 struct lease *lease;
8091
8092 ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09008093 le32_to_cpu(req->LeaseState));
Namjae Jeone2f34482021-03-16 10:49:09 +09008094 opinfo = lookup_lease_in_table(conn, req->LeaseKey);
8095 if (!opinfo) {
8096 ksmbd_debug(OPLOCK, "file not opened\n");
8097 smb2_set_err_rsp(work);
8098 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8099 return;
8100 }
8101 lease = opinfo->o_lease;
8102
8103 if (opinfo->op_state == OPLOCK_STATE_NONE) {
Namjae Jeonbde16942021-06-28 15:23:19 +09008104 pr_err("unexpected lease break state 0x%x\n",
8105 opinfo->op_state);
Namjae Jeone2f34482021-03-16 10:49:09 +09008106 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8107 goto err_out;
8108 }
8109
8110 if (check_lease_state(lease, req->LeaseState)) {
8111 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
8112 ksmbd_debug(OPLOCK,
Namjae Jeon070fb212021-05-26 17:57:12 +09008113 "req lease state: 0x%x, expected state: 0x%x\n",
8114 req->LeaseState, lease->new_state);
Namjae Jeone2f34482021-03-16 10:49:09 +09008115 goto err_out;
8116 }
8117
8118 if (!atomic_read(&opinfo->breaking_cnt)) {
8119 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8120 goto err_out;
8121 }
8122
8123 /* check for bad lease state */
Namjae Jeon070fb212021-05-26 17:57:12 +09008124 if (req->LeaseState &
8125 (~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) {
Namjae Jeone2f34482021-03-16 10:49:09 +09008126 err = STATUS_INVALID_OPLOCK_PROTOCOL;
8127 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8128 lease_change_type = OPLOCK_WRITE_TO_NONE;
8129 else
8130 lease_change_type = OPLOCK_READ_TO_NONE;
8131 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09008132 le32_to_cpu(lease->state),
8133 le32_to_cpu(req->LeaseState));
Namjae Jeon64b39f42021-03-30 14:25:35 +09008134 } else if (lease->state == SMB2_LEASE_READ_CACHING_LE &&
8135 req->LeaseState != SMB2_LEASE_NONE_LE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09008136 err = STATUS_INVALID_OPLOCK_PROTOCOL;
8137 lease_change_type = OPLOCK_READ_TO_NONE;
8138 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09008139 le32_to_cpu(lease->state),
8140 le32_to_cpu(req->LeaseState));
Namjae Jeone2f34482021-03-16 10:49:09 +09008141 } else {
8142 /* valid lease state changes */
8143 err = STATUS_INVALID_DEVICE_STATE;
8144 if (req->LeaseState == SMB2_LEASE_NONE_LE) {
8145 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8146 lease_change_type = OPLOCK_WRITE_TO_NONE;
8147 else
8148 lease_change_type = OPLOCK_READ_TO_NONE;
8149 } else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) {
8150 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8151 lease_change_type = OPLOCK_WRITE_TO_READ;
8152 else
8153 lease_change_type = OPLOCK_READ_HANDLE_TO_READ;
Namjae Jeon64b39f42021-03-30 14:25:35 +09008154 } else {
Namjae Jeone2f34482021-03-16 10:49:09 +09008155 lease_change_type = 0;
Namjae Jeon64b39f42021-03-30 14:25:35 +09008156 }
Namjae Jeone2f34482021-03-16 10:49:09 +09008157 }
8158
8159 switch (lease_change_type) {
8160 case OPLOCK_WRITE_TO_READ:
8161 ret = opinfo_write_to_read(opinfo);
8162 break;
8163 case OPLOCK_READ_HANDLE_TO_READ:
8164 ret = opinfo_read_handle_to_read(opinfo);
8165 break;
8166 case OPLOCK_WRITE_TO_NONE:
8167 ret = opinfo_write_to_none(opinfo);
8168 break;
8169 case OPLOCK_READ_TO_NONE:
8170 ret = opinfo_read_to_none(opinfo);
8171 break;
8172 default:
8173 ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09008174 le32_to_cpu(lease->state),
8175 le32_to_cpu(req->LeaseState));
Namjae Jeone2f34482021-03-16 10:49:09 +09008176 }
8177
8178 lease_state = lease->state;
8179 opinfo->op_state = OPLOCK_STATE_NONE;
8180 wake_up_interruptible_all(&opinfo->oplock_q);
8181 atomic_dec(&opinfo->breaking_cnt);
8182 wake_up_interruptible_all(&opinfo->oplock_brk);
8183 opinfo_put(opinfo);
8184
8185 if (ret < 0) {
8186 rsp->hdr.Status = err;
8187 goto err_out;
8188 }
8189
8190 rsp->StructureSize = cpu_to_le16(36);
8191 rsp->Reserved = 0;
8192 rsp->Flags = 0;
8193 memcpy(rsp->LeaseKey, req->LeaseKey, 16);
8194 rsp->LeaseState = lease_state;
8195 rsp->LeaseDuration = 0;
Namjae Jeoncb451722021-11-03 08:08:44 +09008196 inc_rfc1001_len(work->response_buf, 36);
Namjae Jeone2f34482021-03-16 10:49:09 +09008197 return;
8198
8199err_out:
8200 opinfo->op_state = OPLOCK_STATE_NONE;
8201 wake_up_interruptible_all(&opinfo->oplock_q);
8202 atomic_dec(&opinfo->breaking_cnt);
8203 wake_up_interruptible_all(&opinfo->oplock_brk);
8204
8205 opinfo_put(opinfo);
8206 smb2_set_err_rsp(work);
8207}
8208
8209/**
8210 * smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break
8211 * @work: smb work containing oplock/lease break command buffer
8212 *
8213 * Return: 0
8214 */
8215int smb2_oplock_break(struct ksmbd_work *work)
8216{
Namjae Jeoncb451722021-11-03 08:08:44 +09008217 struct smb2_oplock_break *req = smb2_get_msg(work->request_buf);
8218 struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008219
8220 switch (le16_to_cpu(req->StructureSize)) {
8221 case OP_BREAK_STRUCT_SIZE_20:
8222 smb20_oplock_break_ack(work);
8223 break;
8224 case OP_BREAK_STRUCT_SIZE_21:
8225 smb21_lease_break_ack(work);
8226 break;
8227 default:
8228 ksmbd_debug(OPLOCK, "invalid break cmd %d\n",
Namjae Jeon070fb212021-05-26 17:57:12 +09008229 le16_to_cpu(req->StructureSize));
Namjae Jeone2f34482021-03-16 10:49:09 +09008230 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
8231 smb2_set_err_rsp(work);
8232 }
8233
8234 return 0;
8235}
8236
8237/**
8238 * smb2_notify() - handler for smb2 notify request
Hyunchul Lee95fa1ce2021-03-21 17:05:56 +09008239 * @work: smb work containing notify command buffer
Namjae Jeone2f34482021-03-16 10:49:09 +09008240 *
8241 * Return: 0
8242 */
8243int smb2_notify(struct ksmbd_work *work)
8244{
Ronnie Sahlberg699230f2021-09-09 12:26:12 +09008245 struct smb2_change_notify_req *req;
8246 struct smb2_change_notify_rsp *rsp;
Namjae Jeone2f34482021-03-16 10:49:09 +09008247
8248 WORK_BUFFERS(work, req, rsp);
8249
8250 if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) {
8251 rsp->hdr.Status = STATUS_INTERNAL_ERROR;
8252 smb2_set_err_rsp(work);
8253 return 0;
8254 }
8255
8256 smb2_set_err_rsp(work);
8257 rsp->hdr.Status = STATUS_NOT_IMPLEMENTED;
8258 return 0;
8259}
8260
8261/**
8262 * smb2_is_sign_req() - handler for checking packet signing status
Hyunchul Lee95fa1ce2021-03-21 17:05:56 +09008263 * @work: smb work containing notify command buffer
8264 * @command: SMB2 command id
Namjae Jeone2f34482021-03-16 10:49:09 +09008265 *
8266 * Return: true if packed is signed, false otherwise
8267 */
8268bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command)
8269{
Namjae Jeoncb451722021-11-03 08:08:44 +09008270 struct smb2_hdr *rcv_hdr2 = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008271
8272 if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09008273 command != SMB2_NEGOTIATE_HE &&
8274 command != SMB2_SESSION_SETUP_HE &&
8275 command != SMB2_OPLOCK_BREAK_HE)
Namjae Jeone2f34482021-03-16 10:49:09 +09008276 return true;
8277
kernel test robot56160152021-05-12 09:24:37 +09008278 return false;
Namjae Jeone2f34482021-03-16 10:49:09 +09008279}
8280
8281/**
8282 * smb2_check_sign_req() - handler for req packet sign processing
8283 * @work: smb work containing notify command buffer
8284 *
8285 * Return: 1 on success, 0 otherwise
8286 */
8287int smb2_check_sign_req(struct ksmbd_work *work)
8288{
Namjae Jeoncb451722021-11-03 08:08:44 +09008289 struct smb2_hdr *hdr;
Namjae Jeone2f34482021-03-16 10:49:09 +09008290 char signature_req[SMB2_SIGNATURE_SIZE];
8291 char signature[SMB2_HMACSHA256_SIZE];
8292 struct kvec iov[1];
8293 size_t len;
8294
Namjae Jeoncb451722021-11-03 08:08:44 +09008295 hdr = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008296 if (work->next_smb2_rcv_hdr_off)
Namjae Jeon8a893312021-06-25 13:43:37 +09008297 hdr = ksmbd_req_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +09008298
8299 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
Namjae Jeoncb451722021-11-03 08:08:44 +09008300 len = get_rfc1002_len(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008301 else if (hdr->NextCommand)
8302 len = le32_to_cpu(hdr->NextCommand);
8303 else
Namjae Jeoncb451722021-11-03 08:08:44 +09008304 len = get_rfc1002_len(work->request_buf) -
Namjae Jeone2f34482021-03-16 10:49:09 +09008305 work->next_smb2_rcv_hdr_off;
8306
8307 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8308 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8309
8310 iov[0].iov_base = (char *)&hdr->ProtocolId;
8311 iov[0].iov_len = len;
8312
8313 if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1,
Namjae Jeon64b39f42021-03-30 14:25:35 +09008314 signature))
Namjae Jeone2f34482021-03-16 10:49:09 +09008315 return 0;
8316
8317 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09008318 pr_err("bad smb2 signature\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09008319 return 0;
8320 }
8321
8322 return 1;
8323}
8324
8325/**
8326 * smb2_set_sign_rsp() - handler for rsp packet sign processing
8327 * @work: smb work containing notify command buffer
8328 *
8329 */
8330void smb2_set_sign_rsp(struct ksmbd_work *work)
8331{
Namjae Jeoncb451722021-11-03 08:08:44 +09008332 struct smb2_hdr *hdr;
Namjae Jeone2f34482021-03-16 10:49:09 +09008333 struct smb2_hdr *req_hdr;
8334 char signature[SMB2_HMACSHA256_SIZE];
8335 struct kvec iov[2];
8336 size_t len;
8337 int n_vec = 1;
8338
Namjae Jeoncb451722021-11-03 08:08:44 +09008339 hdr = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008340 if (work->next_smb2_rsp_hdr_off)
Namjae Jeon8a893312021-06-25 13:43:37 +09008341 hdr = ksmbd_resp_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +09008342
Namjae Jeon8a893312021-06-25 13:43:37 +09008343 req_hdr = ksmbd_req_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +09008344
8345 if (!work->next_smb2_rsp_hdr_off) {
Namjae Jeoncb451722021-11-03 08:08:44 +09008346 len = get_rfc1002_len(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008347 if (req_hdr->NextCommand)
8348 len = ALIGN(len, 8);
8349 } else {
Namjae Jeoncb451722021-11-03 08:08:44 +09008350 len = get_rfc1002_len(work->response_buf) -
8351 work->next_smb2_rsp_hdr_off;
Namjae Jeone2f34482021-03-16 10:49:09 +09008352 len = ALIGN(len, 8);
8353 }
8354
8355 if (req_hdr->NextCommand)
8356 hdr->NextCommand = cpu_to_le32(len);
8357
8358 hdr->Flags |= SMB2_FLAGS_SIGNED;
8359 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8360
8361 iov[0].iov_base = (char *)&hdr->ProtocolId;
8362 iov[0].iov_len = len;
8363
Namjae Jeone5066492021-03-30 12:35:23 +09008364 if (work->aux_payload_sz) {
8365 iov[0].iov_len -= work->aux_payload_sz;
Namjae Jeone2f34482021-03-16 10:49:09 +09008366
Namjae Jeone5066492021-03-30 12:35:23 +09008367 iov[1].iov_base = work->aux_payload_buf;
8368 iov[1].iov_len = work->aux_payload_sz;
Namjae Jeone2f34482021-03-16 10:49:09 +09008369 n_vec++;
8370 }
8371
8372 if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec,
Namjae Jeon64b39f42021-03-30 14:25:35 +09008373 signature))
Namjae Jeone2f34482021-03-16 10:49:09 +09008374 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8375}
8376
8377/**
8378 * smb3_check_sign_req() - handler for req packet sign processing
8379 * @work: smb work containing notify command buffer
8380 *
8381 * Return: 1 on success, 0 otherwise
8382 */
8383int smb3_check_sign_req(struct ksmbd_work *work)
8384{
Namjae Jeonf5a544e2021-06-18 10:04:19 +09008385 struct ksmbd_conn *conn = work->conn;
Namjae Jeone2f34482021-03-16 10:49:09 +09008386 char *signing_key;
Namjae Jeoncb451722021-11-03 08:08:44 +09008387 struct smb2_hdr *hdr;
Namjae Jeone2f34482021-03-16 10:49:09 +09008388 struct channel *chann;
8389 char signature_req[SMB2_SIGNATURE_SIZE];
8390 char signature[SMB2_CMACAES_SIZE];
8391 struct kvec iov[1];
8392 size_t len;
8393
Namjae Jeoncb451722021-11-03 08:08:44 +09008394 hdr = smb2_get_msg(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008395 if (work->next_smb2_rcv_hdr_off)
Namjae Jeon8a893312021-06-25 13:43:37 +09008396 hdr = ksmbd_req_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +09008397
8398 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
Namjae Jeoncb451722021-11-03 08:08:44 +09008399 len = get_rfc1002_len(work->request_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008400 else if (hdr->NextCommand)
8401 len = le32_to_cpu(hdr->NextCommand);
8402 else
Namjae Jeoncb451722021-11-03 08:08:44 +09008403 len = get_rfc1002_len(work->request_buf) -
Namjae Jeone2f34482021-03-16 10:49:09 +09008404 work->next_smb2_rcv_hdr_off;
8405
8406 if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8407 signing_key = work->sess->smb3signingkey;
Namjae Jeone2f34482021-03-16 10:49:09 +09008408 } else {
Namjae Jeon8e06b312022-07-22 10:15:57 +09008409 read_lock(&work->sess->chann_lock);
Namjae Jeonf5a544e2021-06-18 10:04:19 +09008410 chann = lookup_chann_list(work->sess, conn);
Namjae Jeon8e06b312022-07-22 10:15:57 +09008411 if (!chann) {
8412 read_unlock(&work->sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09008413 return 0;
Namjae Jeon8e06b312022-07-22 10:15:57 +09008414 }
Namjae Jeone2f34482021-03-16 10:49:09 +09008415 signing_key = chann->smb3signingkey;
Namjae Jeon8e06b312022-07-22 10:15:57 +09008416 read_unlock(&work->sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09008417 }
8418
8419 if (!signing_key) {
Namjae Jeonbde16942021-06-28 15:23:19 +09008420 pr_err("SMB3 signing key is not generated\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09008421 return 0;
8422 }
8423
8424 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8425 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8426 iov[0].iov_base = (char *)&hdr->ProtocolId;
8427 iov[0].iov_len = len;
8428
8429 if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature))
8430 return 0;
8431
8432 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09008433 pr_err("bad smb2 signature\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09008434 return 0;
8435 }
8436
8437 return 1;
8438}
8439
8440/**
8441 * smb3_set_sign_rsp() - handler for rsp packet sign processing
8442 * @work: smb work containing notify command buffer
8443 *
8444 */
8445void smb3_set_sign_rsp(struct ksmbd_work *work)
8446{
Namjae Jeonf5a544e2021-06-18 10:04:19 +09008447 struct ksmbd_conn *conn = work->conn;
Namjae Jeoncb451722021-11-03 08:08:44 +09008448 struct smb2_hdr *req_hdr, *hdr;
Namjae Jeone2f34482021-03-16 10:49:09 +09008449 struct channel *chann;
8450 char signature[SMB2_CMACAES_SIZE];
8451 struct kvec iov[2];
8452 int n_vec = 1;
8453 size_t len;
8454 char *signing_key;
8455
Namjae Jeoncb451722021-11-03 08:08:44 +09008456 hdr = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008457 if (work->next_smb2_rsp_hdr_off)
Namjae Jeon8a893312021-06-25 13:43:37 +09008458 hdr = ksmbd_resp_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +09008459
Namjae Jeon8a893312021-06-25 13:43:37 +09008460 req_hdr = ksmbd_req_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +09008461
8462 if (!work->next_smb2_rsp_hdr_off) {
Namjae Jeoncb451722021-11-03 08:08:44 +09008463 len = get_rfc1002_len(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008464 if (req_hdr->NextCommand)
8465 len = ALIGN(len, 8);
8466 } else {
Namjae Jeoncb451722021-11-03 08:08:44 +09008467 len = get_rfc1002_len(work->response_buf) -
8468 work->next_smb2_rsp_hdr_off;
Namjae Jeone2f34482021-03-16 10:49:09 +09008469 len = ALIGN(len, 8);
8470 }
8471
Namjae Jeon08bdbc62021-07-27 09:30:29 +09008472 if (conn->binding == false &&
8473 le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
Namjae Jeone2f34482021-03-16 10:49:09 +09008474 signing_key = work->sess->smb3signingkey;
Namjae Jeone2f34482021-03-16 10:49:09 +09008475 } else {
Namjae Jeon8e06b312022-07-22 10:15:57 +09008476 read_lock(&work->sess->chann_lock);
Namjae Jeonf5a544e2021-06-18 10:04:19 +09008477 chann = lookup_chann_list(work->sess, work->conn);
Namjae Jeon8e06b312022-07-22 10:15:57 +09008478 if (!chann) {
8479 read_unlock(&work->sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09008480 return;
Namjae Jeon8e06b312022-07-22 10:15:57 +09008481 }
Namjae Jeone2f34482021-03-16 10:49:09 +09008482 signing_key = chann->smb3signingkey;
Namjae Jeon8e06b312022-07-22 10:15:57 +09008483 read_unlock(&work->sess->chann_lock);
Namjae Jeone2f34482021-03-16 10:49:09 +09008484 }
8485
8486 if (!signing_key)
8487 return;
8488
8489 if (req_hdr->NextCommand)
8490 hdr->NextCommand = cpu_to_le32(len);
8491
8492 hdr->Flags |= SMB2_FLAGS_SIGNED;
8493 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8494 iov[0].iov_base = (char *)&hdr->ProtocolId;
8495 iov[0].iov_len = len;
Namjae Jeone5066492021-03-30 12:35:23 +09008496 if (work->aux_payload_sz) {
8497 iov[0].iov_len -= work->aux_payload_sz;
8498 iov[1].iov_base = work->aux_payload_buf;
8499 iov[1].iov_len = work->aux_payload_sz;
Namjae Jeone2f34482021-03-16 10:49:09 +09008500 n_vec++;
8501 }
8502
8503 if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature))
8504 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8505}
8506
8507/**
8508 * smb3_preauth_hash_rsp() - handler for computing preauth hash on response
8509 * @work: smb work containing response buffer
8510 *
8511 */
8512void smb3_preauth_hash_rsp(struct ksmbd_work *work)
8513{
8514 struct ksmbd_conn *conn = work->conn;
8515 struct ksmbd_session *sess = work->sess;
8516 struct smb2_hdr *req, *rsp;
8517
8518 if (conn->dialect != SMB311_PROT_ID)
8519 return;
8520
8521 WORK_BUFFERS(work, req, rsp);
8522
Namjae Jeon442ff9e2021-09-29 15:44:32 +09008523 if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE &&
8524 conn->preauth_info)
Namjae Jeoncb451722021-11-03 08:08:44 +09008525 ksmbd_gen_preauth_integrity_hash(conn, work->response_buf,
Namjae Jeon070fb212021-05-26 17:57:12 +09008526 conn->preauth_info->Preauth_HashValue);
Namjae Jeone2f34482021-03-16 10:49:09 +09008527
Namjae Jeonf5a544e2021-06-18 10:04:19 +09008528 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) {
Namjae Jeone2f34482021-03-16 10:49:09 +09008529 __u8 *hash_value;
8530
Namjae Jeonf5a544e2021-06-18 10:04:19 +09008531 if (conn->binding) {
8532 struct preauth_session *preauth_sess;
8533
8534 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
8535 if (!preauth_sess)
8536 return;
8537 hash_value = preauth_sess->Preauth_HashValue;
8538 } else {
8539 hash_value = sess->Preauth_HashValue;
8540 if (!hash_value)
8541 return;
8542 }
Namjae Jeoncb451722021-11-03 08:08:44 +09008543 ksmbd_gen_preauth_integrity_hash(conn, work->response_buf,
Namjae Jeon070fb212021-05-26 17:57:12 +09008544 hash_value);
Namjae Jeone2f34482021-03-16 10:49:09 +09008545 }
8546}
8547
Namjae Jeon2dd9129f2021-11-03 08:25:54 +09008548static void fill_transform_hdr(void *tr_buf, char *old_buf, __le16 cipher_type)
Namjae Jeone2f34482021-03-16 10:49:09 +09008549{
Namjae Jeon2dd9129f2021-11-03 08:25:54 +09008550 struct smb2_transform_hdr *tr_hdr = tr_buf + 4;
8551 struct smb2_hdr *hdr = smb2_get_msg(old_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008552 unsigned int orig_len = get_rfc1002_len(old_buf);
8553
Christophe JAILLET56b401f2022-03-23 07:32:05 +01008554 /* tr_buf must be cleared by the caller */
Namjae Jeone2f34482021-03-16 10:49:09 +09008555 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
8556 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
Ronnie Sahlberg4355a8f2021-11-03 08:43:42 +09008557 tr_hdr->Flags = cpu_to_le16(TRANSFORM_FLAG_ENCRYPTED);
Namjae Jeon5a0ca772021-05-06 11:43:37 +09008558 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM ||
8559 cipher_type == SMB2_ENCRYPTION_AES256_GCM)
8560 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
Namjae Jeone2f34482021-03-16 10:49:09 +09008561 else
Namjae Jeon5a0ca772021-05-06 11:43:37 +09008562 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
Namjae Jeone2f34482021-03-16 10:49:09 +09008563 memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8);
Namjae Jeon2dd9129f2021-11-03 08:25:54 +09008564 inc_rfc1001_len(tr_buf, sizeof(struct smb2_transform_hdr));
8565 inc_rfc1001_len(tr_buf, orig_len);
Namjae Jeone2f34482021-03-16 10:49:09 +09008566}
8567
8568int smb3_encrypt_resp(struct ksmbd_work *work)
8569{
Namjae Jeone5066492021-03-30 12:35:23 +09008570 char *buf = work->response_buf;
Namjae Jeone2f34482021-03-16 10:49:09 +09008571 struct kvec iov[3];
8572 int rc = -ENOMEM;
Namjae Jeone5066492021-03-30 12:35:23 +09008573 int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0);
Namjae Jeone2f34482021-03-16 10:49:09 +09008574
8575 if (ARRAY_SIZE(iov) < rq_nvec)
8576 return -ENOMEM;
8577
Namjae Jeon2dd9129f2021-11-03 08:25:54 +09008578 work->tr_buf = kzalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL);
8579 if (!work->tr_buf)
Namjae Jeone2f34482021-03-16 10:49:09 +09008580 return rc;
8581
8582 /* fill transform header */
Namjae Jeon2dd9129f2021-11-03 08:25:54 +09008583 fill_transform_hdr(work->tr_buf, buf, work->conn->cipher_type);
Namjae Jeone2f34482021-03-16 10:49:09 +09008584
Namjae Jeon2dd9129f2021-11-03 08:25:54 +09008585 iov[0].iov_base = work->tr_buf;
8586 iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4;
Namjae Jeone2f34482021-03-16 10:49:09 +09008587 buf_size += iov[0].iov_len - 4;
8588
8589 iov[1].iov_base = buf + 4;
8590 iov[1].iov_len = get_rfc1002_len(buf);
Namjae Jeone5066492021-03-30 12:35:23 +09008591 if (work->aux_payload_sz) {
8592 iov[1].iov_len = work->resp_hdr_sz - 4;
Namjae Jeone2f34482021-03-16 10:49:09 +09008593
Namjae Jeone5066492021-03-30 12:35:23 +09008594 iov[2].iov_base = work->aux_payload_buf;
8595 iov[2].iov_len = work->aux_payload_sz;
Namjae Jeone2f34482021-03-16 10:49:09 +09008596 buf_size += iov[2].iov_len;
8597 }
8598 buf_size += iov[1].iov_len;
8599 work->resp_hdr_sz = iov[1].iov_len;
8600
Namjae Jeonaf705ef2022-09-22 23:36:34 +09008601 rc = ksmbd_crypt_message(work, iov, rq_nvec, 1);
Namjae Jeone2f34482021-03-16 10:49:09 +09008602 if (rc)
8603 return rc;
8604
8605 memmove(buf, iov[1].iov_base, iov[1].iov_len);
Namjae Jeon2dd9129f2021-11-03 08:25:54 +09008606 *(__be32 *)work->tr_buf = cpu_to_be32(buf_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09008607
8608 return rc;
8609}
8610
Namjae Jeonf4228b62021-08-12 10:16:40 +09008611bool smb3_is_transform_hdr(void *buf)
Namjae Jeone2f34482021-03-16 10:49:09 +09008612{
Namjae Jeon2dd9129f2021-11-03 08:25:54 +09008613 struct smb2_transform_hdr *trhdr = smb2_get_msg(buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008614
8615 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
8616}
8617
8618int smb3_decrypt_req(struct ksmbd_work *work)
8619{
Namjae Jeone2f34482021-03-16 10:49:09 +09008620 struct ksmbd_session *sess;
Namjae Jeone5066492021-03-30 12:35:23 +09008621 char *buf = work->request_buf;
Namjae Jeone2f34482021-03-16 10:49:09 +09008622 unsigned int pdu_length = get_rfc1002_len(buf);
8623 struct kvec iov[2];
Namjae Jeon2dd9129f2021-11-03 08:25:54 +09008624 int buf_data_size = pdu_length - sizeof(struct smb2_transform_hdr);
8625 struct smb2_transform_hdr *tr_hdr = smb2_get_msg(buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008626 int rc = 0;
8627
Namjae Jeonc7705ee2021-10-04 20:44:52 +09008628 if (buf_data_size < sizeof(struct smb2_hdr)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09008629 pr_err("Transform message is too small (%u)\n",
8630 pdu_length);
Namjae Jeone2f34482021-03-16 10:49:09 +09008631 return -ECONNABORTED;
8632 }
8633
Namjae Jeonc7705ee2021-10-04 20:44:52 +09008634 if (buf_data_size < le32_to_cpu(tr_hdr->OriginalMessageSize)) {
Namjae Jeonbde16942021-06-28 15:23:19 +09008635 pr_err("Transform message is broken\n");
Namjae Jeone2f34482021-03-16 10:49:09 +09008636 return -ECONNABORTED;
8637 }
8638
Namjae Jeonaf705ef2022-09-22 23:36:34 +09008639 sess = ksmbd_session_lookup_all(work->conn, le64_to_cpu(tr_hdr->SessionId));
Namjae Jeon4227f812021-09-29 19:52:51 +09008640 if (!sess) {
8641 pr_err("invalid session id(%llx) in transform header\n",
8642 le64_to_cpu(tr_hdr->SessionId));
8643 return -ECONNABORTED;
8644 }
8645
Namjae Jeone2f34482021-03-16 10:49:09 +09008646 iov[0].iov_base = buf;
Namjae Jeon2dd9129f2021-11-03 08:25:54 +09008647 iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4;
8648 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr) + 4;
Namjae Jeone2f34482021-03-16 10:49:09 +09008649 iov[1].iov_len = buf_data_size;
Namjae Jeonaf705ef2022-09-22 23:36:34 +09008650 rc = ksmbd_crypt_message(work, iov, 2, 0);
Namjae Jeone2f34482021-03-16 10:49:09 +09008651 if (rc)
8652 return rc;
8653
8654 memmove(buf + 4, iov[1].iov_base, buf_data_size);
Namjae Jeoncb451722021-11-03 08:08:44 +09008655 *(__be32 *)buf = cpu_to_be32(buf_data_size);
Namjae Jeone2f34482021-03-16 10:49:09 +09008656
8657 return rc;
8658}
8659
8660bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work)
8661{
8662 struct ksmbd_conn *conn = work->conn;
Namjae Jeoncb451722021-11-03 08:08:44 +09008663 struct smb2_hdr *rsp = smb2_get_msg(work->response_buf);
Namjae Jeone2f34482021-03-16 10:49:09 +09008664
8665 if (conn->dialect < SMB30_PROT_ID)
8666 return false;
8667
8668 if (work->next_smb2_rcv_hdr_off)
Namjae Jeon8a893312021-06-25 13:43:37 +09008669 rsp = ksmbd_resp_buf_next(work);
Namjae Jeone2f34482021-03-16 10:49:09 +09008670
8671 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE &&
Namjae Jeon64b39f42021-03-30 14:25:35 +09008672 rsp->Status == STATUS_SUCCESS)
Namjae Jeone2f34482021-03-16 10:49:09 +09008673 return true;
8674 return false;
8675}