blob: 5596c9f30ccb280f78834ee7dee05c437c265ce4 [file] [log] [blame]
Thomas Gleixner1a59d1b82019-05-27 08:55:05 +02001// SPDX-License-Identifier: GPL-2.0-or-later
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
Steve Frenchb8643e12005-04-28 22:41:07 -07004 * Copyright (C) International Business Machines Corp., 2000,2005
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
6 * Modified by Steve French (sfrench@us.ibm.com)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 */
8#include <linux/fs.h>
9#include <linux/string.h>
10#include <linux/ctype.h>
Christophe JAILLET9f5d1a82023-01-14 09:58:15 +010011#include <linux/kstrtox.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/module.h>
13#include <linux/proc_fs.h>
Linus Torvalds7c0f6ba2016-12-24 11:46:01 -080014#include <linux/uaccess.h>
Enzo Matsumiya50e63d62023-06-09 18:29:59 -030015#include <uapi/linux/ethtool.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include "cifspdu.h"
17#include "cifsglob.h"
18#include "cifsproto.h"
19#include "cifs_debug.h"
Steve French6c91d362005-04-28 22:41:06 -070020#include "cifsfs.h"
Aurelien Aptel94b0595a2021-03-18 13:52:59 +010021#include "fs_context.h"
Paulo Alcantara54be1f62018-11-14 16:01:21 -020022#ifdef CONFIG_CIFS_DFS_UPCALL
23#include "dfs_cache.h"
24#endif
Long Lid8ec9132017-11-07 01:54:58 -070025#ifdef CONFIG_CIFS_SMB_DIRECT
26#include "smbdirect.h"
27#endif
Samuel Cabrero20fab0d2020-11-30 19:02:53 +010028#include "cifs_swn.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070029
30void
31cifs_dump_mem(char *label, void *data, int length)
32{
Andy Shevchenko0b456f02014-08-27 16:49:44 +030033 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
Andy Shevchenko55d83e02014-08-27 16:49:43 +030034 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
35 data, length, true);
Linus Torvalds1da177e2005-04-16 15:20:36 -070036}
37
Ronnie Sahlberg14547f72018-04-22 14:45:53 -060038void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
Steve French39798772006-05-31 22:40:51 +000039{
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +040040#ifdef CONFIG_CIFS_DEBUG2
Yu Zhe0827f712022-06-14 01:54:49 -070041 struct smb_hdr *smb = buf;
Pavel Shilovskyd4e48542012-03-23 14:28:02 -040042
Joe Perchesf96637b2013-05-04 22:12:25 -050043 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
44 smb->Command, smb->Status.CifsError,
45 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
Ronnie Sahlberg14547f72018-04-22 14:45:53 -060046 cifs_dbg(VFS, "smb buf %p len %u\n", smb,
Enzo Matsumiya68ed1442022-08-17 14:14:02 -030047 server->ops->calc_smb_size(smb));
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +040048#endif /* CONFIG_CIFS_DEBUG2 */
Steve French39798772006-05-31 22:40:51 +000049}
50
Steve Frenchffdd6e42007-06-24 21:15:44 +000051void cifs_dump_mids(struct TCP_Server_Info *server)
Steve French39798772006-05-31 22:40:51 +000052{
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +040053#ifdef CONFIG_CIFS_DEBUG2
Steve Frenchffdd6e42007-06-24 21:15:44 +000054 struct mid_q_entry *mid_entry;
Steve French39798772006-05-31 22:40:51 +000055
Steve French221601c2007-06-05 20:35:06 +000056 if (server == NULL)
Steve French39798772006-05-31 22:40:51 +000057 return;
58
Joe Perchesf96637b2013-05-04 22:12:25 -050059 cifs_dbg(VFS, "Dump pending requests:\n");
Shyam Prasad Nd7d7a662022-07-27 14:49:56 -050060 spin_lock(&server->mid_lock);
Baokun Lia506ccb2021-06-17 19:36:40 +080061 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
Joe Perchesf96637b2013-05-04 22:12:25 -050062 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
63 mid_entry->mid_state,
64 le16_to_cpu(mid_entry->command),
65 mid_entry->pid,
66 mid_entry->callback_data,
67 mid_entry->mid);
Steve French39798772006-05-31 22:40:51 +000068#ifdef CONFIG_CIFS_STATS2
Joe Perchesf96637b2013-05-04 22:12:25 -050069 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
70 mid_entry->large_buf,
71 mid_entry->resp_buf,
72 mid_entry->when_received,
73 jiffies);
Steve French39798772006-05-31 22:40:51 +000074#endif /* STATS2 */
Joe Perchesf96637b2013-05-04 22:12:25 -050075 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
76 mid_entry->multiRsp, mid_entry->multiEnd);
Steve Frenchad8b15f2008-08-08 21:10:16 +000077 if (mid_entry->resp_buf) {
Steve French71992e622018-05-06 15:58:51 -050078 cifs_dump_detail(mid_entry->resp_buf, server);
Steve Frenchad8b15f2008-08-08 21:10:16 +000079 cifs_dump_mem("existing buf: ",
80 mid_entry->resp_buf, 62);
Steve French39798772006-05-31 22:40:51 +000081 }
82 }
Shyam Prasad Nd7d7a662022-07-27 14:49:56 -050083 spin_unlock(&server->mid_lock);
Steve French39798772006-05-31 22:40:51 +000084#endif /* CONFIG_CIFS_DEBUG2 */
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +040085}
Steve French39798772006-05-31 22:40:51 +000086
Linus Torvalds1da177e2005-04-16 15:20:36 -070087#ifdef CONFIG_PROC_FS
Aurelien Aptel02cf5902018-01-24 13:46:12 +010088static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
89{
90 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
91
Steve French68e14562022-09-21 14:05:53 -050092 seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count);
Aurelien Aptel02cf5902018-01-24 13:46:12 +010093 if (tcon->nativeFileSystem)
94 seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
95 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
96 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
97 le32_to_cpu(tcon->fsAttrInfo.Attributes),
98 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
Steve Frenchfdf59eb2022-03-27 16:07:30 -050099 tcon->status);
Aurelien Aptel02cf5902018-01-24 13:46:12 +0100100 if (dev_type == FILE_DEVICE_DISK)
101 seq_puts(m, " type: DISK ");
102 else if (dev_type == FILE_DEVICE_CD_ROM)
103 seq_puts(m, " type: CDROM ");
104 else
105 seq_printf(m, " type: %d ", dev_type);
Steve Frenchab7b10c2019-03-12 01:29:03 -0500106
107 seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
108
Steve Frenchffd1ef12019-03-09 18:12:18 -0600109 if ((tcon->seal) ||
110 (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
111 (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
Steve French8b4dd442023-05-23 20:25:47 -0500112 seq_puts(m, " encrypted");
Steve French5c5a41be2018-05-30 17:11:55 -0500113 if (tcon->nocase)
114 seq_printf(m, " nocase");
Steve Frenchede2e522018-01-31 14:34:37 -0600115 if (tcon->unix_ext)
116 seq_printf(m, " POSIX Extensions");
Aurelien Aptel02cf5902018-01-24 13:46:12 +0100117 if (tcon->ses->server->ops->dump_share_caps)
118 tcon->ses->server->ops->dump_share_caps(m, tcon);
Samuel Cabrero20fab0d2020-11-30 19:02:53 +0100119 if (tcon->use_witness)
120 seq_puts(m, " Witness");
Steve French52832252022-05-23 23:17:12 -0500121 if (tcon->broken_sparse_sup)
122 seq_puts(m, " nosparse");
Aurelien Aptel02cf5902018-01-24 13:46:12 +0100123 if (tcon->need_reconnect)
124 seq_puts(m, "\tDISCONNECTED ");
Paulo Alcantara3ae872d2023-06-26 16:04:17 -0300125 spin_lock(&tcon->tc_lock);
126 if (tcon->origin_fullpath) {
127 seq_printf(m, "\n\tDFS origin fullpath: %s",
128 tcon->origin_fullpath);
129 }
130 spin_unlock(&tcon->tc_lock);
Aurelien Aptel02cf5902018-01-24 13:46:12 +0100131 seq_putc(m, '\n');
132}
133
Aurelien Aptelbc0fe8b2018-06-14 15:43:20 +0200134static void
Aurelien Aptel85150922019-11-20 17:15:58 +0100135cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
136{
137 struct TCP_Server_Info *server = chan->server;
138
Shyam Prasad N0c51cc62023-10-13 09:25:30 +0000139 if (!server) {
140 seq_printf(m, "\n\n\t\tChannel: %d DISABLED", i+1);
141 return;
142 }
143
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800144 seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx"
Shyam Prasad N2a44b3892023-06-09 17:46:55 +0000145 "\n\t\tNumber of credits: %d,%d,%d Dialect 0x%x"
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800146 "\n\t\tTCP status: %d Instance: %d"
147 "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d"
148 "\n\t\tIn Send: %d In MaxReq Wait: %d",
149 i+1, server->conn_id,
Aurelien Aptel85150922019-11-20 17:15:58 +0100150 server->credits,
Shyam Prasad N2a44b3892023-06-09 17:46:55 +0000151 server->echo_credits,
152 server->oplock_credits,
Aurelien Aptel85150922019-11-20 17:15:58 +0100153 server->dialect,
154 server->tcpStatus,
155 server->reconnect_instance,
156 server->srv_count,
157 server->sec_mode,
158 in_flight(server),
159 atomic_read(&server->in_send),
160 atomic_read(&server->num_waiters));
Steve French7b38f6d2023-08-10 21:41:03 -0500161#ifdef CONFIG_NET_NS
162 if (server->net)
163 seq_printf(m, " Net namespace: %u ", server->net->ns.inum);
164#endif /* NET_NS */
165
Aurelien Aptel85150922019-11-20 17:15:58 +0100166}
167
Enzo Matsumiya50e63d62023-06-09 18:29:59 -0300168static inline const char *smb_speed_to_str(size_t bps)
169{
170 size_t mbps = bps / 1000 / 1000;
171
172 switch (mbps) {
173 case SPEED_10:
174 return "10Mbps";
175 case SPEED_100:
176 return "100Mbps";
177 case SPEED_1000:
178 return "1Gbps";
179 case SPEED_2500:
180 return "2.5Gbps";
181 case SPEED_5000:
182 return "5Gbps";
183 case SPEED_10000:
184 return "10Gbps";
185 case SPEED_14000:
186 return "14Gbps";
187 case SPEED_20000:
188 return "20Gbps";
189 case SPEED_25000:
190 return "25Gbps";
191 case SPEED_40000:
192 return "40Gbps";
193 case SPEED_50000:
194 return "50Gbps";
195 case SPEED_56000:
196 return "56Gbps";
197 case SPEED_100000:
198 return "100Gbps";
199 case SPEED_200000:
200 return "200Gbps";
201 case SPEED_400000:
202 return "400Gbps";
203 case SPEED_800000:
204 return "800Gbps";
205 default:
206 return "Unknown";
207 }
208}
209
Aurelien Aptel85150922019-11-20 17:15:58 +0100210static void
Aurelien Aptelbc0fe8b2018-06-14 15:43:20 +0200211cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
212{
213 struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
214 struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
215
Enzo Matsumiya50e63d62023-06-09 18:29:59 -0300216 seq_printf(m, "\tSpeed: %s\n", smb_speed_to_str(iface->speed));
Aurelien Aptelbc0fe8b2018-06-14 15:43:20 +0200217 seq_puts(m, "\t\tCapabilities: ");
218 if (iface->rdma_capable)
219 seq_puts(m, "rdma ");
220 if (iface->rss_capable)
221 seq_puts(m, "rss ");
Enzo Matsumiya50e63d62023-06-09 18:29:59 -0300222 if (!iface->rdma_capable && !iface->rss_capable)
223 seq_puts(m, "None");
Aurelien Aptelbc0fe8b2018-06-14 15:43:20 +0200224 seq_putc(m, '\n');
225 if (iface->sockaddr.ss_family == AF_INET)
226 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
227 else if (iface->sockaddr.ss_family == AF_INET6)
228 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
Shyam Prasad Naa45dad2022-01-01 12:50:21 +0000229 if (!iface->is_active)
230 seq_puts(m, "\t\t[for-cleanup]\n");
Aurelien Aptelbc0fe8b2018-06-14 15:43:20 +0200231}
232
Steve Frenchdfe33f92018-10-30 19:50:31 -0500233static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
234{
Steve Frenchdfe33f92018-10-30 19:50:31 -0500235 struct TCP_Server_Info *server;
236 struct cifs_ses *ses;
237 struct cifs_tcon *tcon;
238 struct cifsFileInfo *cfile;
239
240 seq_puts(m, "# Version:1\n");
241 seq_puts(m, "# Format:\n");
Shyam Prasad N175b54a2023-03-13 12:17:34 +0000242 seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>");
Steve Frenchdfe33f92018-10-30 19:50:31 -0500243#ifdef CONFIG_CIFS_DEBUG2
244 seq_printf(m, " <filename> <mid>\n");
245#else
246 seq_printf(m, " <filename>\n");
247#endif /* CIFS_DEBUG2 */
248 spin_lock(&cifs_tcp_ses_lock);
Baokun Lia506ccb2021-06-17 19:36:40 +0800249 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
Enzo Matsumiya9543c8a2022-07-22 14:02:59 -0300250 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
251 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
Steve Frenchdfe33f92018-10-30 19:50:31 -0500252 spin_lock(&tcon->open_file_lock);
Enzo Matsumiya9543c8a2022-07-22 14:02:59 -0300253 list_for_each_entry(cfile, &tcon->openFileList, tlist) {
Steve Frenchdfe33f92018-10-30 19:50:31 -0500254 seq_printf(m,
Shyam Prasad N175b54a2023-03-13 12:17:34 +0000255 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd",
Steve Frenchdfe33f92018-10-30 19:50:31 -0500256 tcon->tid,
Shyam Prasad N175b54a2023-03-13 12:17:34 +0000257 ses->Suid,
Steve Frenchdfe33f92018-10-30 19:50:31 -0500258 cfile->fid.persistent_fid,
259 cfile->f_flags,
260 cfile->count,
261 cfile->pid,
262 from_kuid(&init_user_ns, cfile->uid),
Al Virob9e46662021-01-06 21:53:52 -0500263 cfile->dentry);
Steve Frenchdfe33f92018-10-30 19:50:31 -0500264#ifdef CONFIG_CIFS_DEBUG2
Paulo Alcantarabf1bc6942021-03-08 12:00:47 -0300265 seq_printf(m, " %llu\n", cfile->fid.mid);
Steve Frenchdfe33f92018-10-30 19:50:31 -0500266#else
267 seq_printf(m, "\n");
268#endif /* CIFS_DEBUG2 */
269 }
270 spin_unlock(&tcon->open_file_lock);
271 }
272 }
273 }
274 spin_unlock(&cifs_tcp_ses_lock);
275 seq_putc(m, '\n');
276 return 0;
277}
278
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000279static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280{
Steve Frenchffdd6e42007-06-24 21:15:44 +0000281 struct mid_q_entry *mid_entry;
Jeff Layton14fbf502008-11-14 13:53:46 -0500282 struct TCP_Server_Info *server;
Shyam Prasad Nd12bc6d2023-03-13 11:09:12 +0000283 struct TCP_Server_Info *chan_server;
Steve French96daf2b2011-05-27 04:34:02 +0000284 struct cifs_ses *ses;
285 struct cifs_tcon *tcon;
Shyam Prasad Naa45dad2022-01-01 12:50:21 +0000286 struct cifs_server_iface *iface;
Shyam Prasad Na6d8fb52022-12-26 11:24:56 +0000287 size_t iface_weight = 0, iface_min_speed = 0;
288 struct cifs_server_iface *last_iface = NULL;
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800289 int c, i, j;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000291 seq_puts(m,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 "Display Internal CIFS Data Structures for Debugging\n"
293 "---------------------------------------------------\n");
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000294 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
Jeff Laytonca40b712011-01-07 11:30:29 -0500295 seq_printf(m, "Features:");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530296#ifdef CONFIG_CIFS_DFS_UPCALL
Steve French950132a2018-06-28 18:46:40 -0500297 seq_printf(m, " DFS");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530298#endif
299#ifdef CONFIG_CIFS_FSCACHE
Steve French950132a2018-06-28 18:46:40 -0500300 seq_printf(m, ",FSCACHE");
301#endif
302#ifdef CONFIG_CIFS_SMB_DIRECT
303 seq_printf(m, ",SMB_DIRECT");
304#endif
305#ifdef CONFIG_CIFS_STATS2
306 seq_printf(m, ",STATS2");
Steve Frenchd2586502018-08-01 22:34:04 -0500307#else
Steve French950132a2018-06-28 18:46:40 -0500308 seq_printf(m, ",STATS");
309#endif
310#ifdef CONFIG_CIFS_DEBUG2
311 seq_printf(m, ",DEBUG2");
312#elif defined(CONFIG_CIFS_DEBUG)
313 seq_printf(m, ",DEBUG");
314#endif
315#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
316 seq_printf(m, ",ALLOW_INSECURE_LEGACY");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530317#endif
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530318#ifdef CONFIG_CIFS_POSIX
Steve French950132a2018-06-28 18:46:40 -0500319 seq_printf(m, ",CIFS_POSIX");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530320#endif
321#ifdef CONFIG_CIFS_UPCALL
Steve French950132a2018-06-28 18:46:40 -0500322 seq_printf(m, ",UPCALL(SPNEGO)");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530323#endif
324#ifdef CONFIG_CIFS_XATTR
Steve French950132a2018-06-28 18:46:40 -0500325 seq_printf(m, ",XATTR");
Jeff Laytonca40b712011-01-07 11:30:29 -0500326#endif
Steve French950132a2018-06-28 18:46:40 -0500327 seq_printf(m, ",ACL");
Samuel Cabrero20fab0d2020-11-30 19:02:53 +0100328#ifdef CONFIG_CIFS_SWN_UPCALL
329 seq_puts(m, ",WITNESS");
330#endif
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530331 seq_putc(m, '\n');
Ronnie Sahlberga5f1a812019-01-24 16:19:31 +1000332 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000333 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800335 seq_printf(m, "\nServers: ");
336
337 c = 0;
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530338 spin_lock(&cifs_tcp_ses_lock);
Baokun Lia506ccb2021-06-17 19:36:40 +0800339 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
Shyam Prasad N0f2b3052021-07-19 11:26:24 +0000340 /* channel info will be printed as a part of sessions below */
Steve Frenchb3773b12023-08-24 23:44:05 -0500341 if (SERVER_IS_CHAN(server))
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800342 continue;
343
344 c++;
345 seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
346 c, server->conn_id);
347
Paulo Alcantara90c49fc2023-04-21 15:52:32 -0300348 spin_lock(&server->srv_lock);
Steve French40f077a2021-02-21 23:00:46 -0600349 if (server->hostname)
350 seq_printf(m, "Hostname: %s ", server->hostname);
Shyam Prasad N380958a2023-06-27 12:09:43 +0000351 seq_printf(m, "\nClientGUID: %pUL", server->client_guid);
Paulo Alcantara90c49fc2023-04-21 15:52:32 -0300352 spin_unlock(&server->srv_lock);
Long Li08a3b962017-11-22 17:38:48 -0700353#ifdef CONFIG_CIFS_SMB_DIRECT
354 if (!server->rdma)
355 goto skip_rdma;
356
Long Li14cc6392019-10-16 13:51:50 -0700357 if (!server->smbd_conn) {
358 seq_printf(m, "\nSMBDirect transport not available");
359 goto skip_rdma;
360 }
361
Long Li08a3b962017-11-22 17:38:48 -0700362 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
363 "transport status: %x",
364 server->smbd_conn->protocol,
365 server->smbd_conn->transport_status);
366 seq_printf(m, "\nConn receive_credit_max: %x "
367 "send_credit_target: %x max_send_size: %x",
368 server->smbd_conn->receive_credit_max,
369 server->smbd_conn->send_credit_target,
370 server->smbd_conn->max_send_size);
371 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
372 "max_fragmented_send_size: %x max_receive_size:%x",
373 server->smbd_conn->max_fragmented_recv_size,
374 server->smbd_conn->max_fragmented_send_size,
375 server->smbd_conn->max_receive_size);
376 seq_printf(m, "\nConn keep_alive_interval: %x "
377 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
378 server->smbd_conn->keep_alive_interval,
379 server->smbd_conn->max_readwrite_size,
380 server->smbd_conn->rdma_readwrite_threshold);
381 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
382 "count_put_receive_buffer: %x count_send_empty: %x",
383 server->smbd_conn->count_get_receive_buffer,
384 server->smbd_conn->count_put_receive_buffer,
385 server->smbd_conn->count_send_empty);
386 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
387 "count_enqueue_reassembly_queue: %x "
388 "count_dequeue_reassembly_queue: %x "
389 "fragment_reassembly_remaining: %x "
390 "reassembly_data_length: %x "
391 "reassembly_queue_length: %x",
392 server->smbd_conn->count_reassembly_queue,
393 server->smbd_conn->count_enqueue_reassembly_queue,
394 server->smbd_conn->count_dequeue_reassembly_queue,
395 server->smbd_conn->fragment_reassembly_remaining,
396 server->smbd_conn->reassembly_data_length,
397 server->smbd_conn->reassembly_queue_length);
398 seq_printf(m, "\nCurrent Credits send_credits: %x "
399 "receive_credits: %x receive_credit_target: %x",
400 atomic_read(&server->smbd_conn->send_credits),
401 atomic_read(&server->smbd_conn->receive_credits),
402 server->smbd_conn->receive_credit_target);
Long Li072a14e2020-03-30 11:04:06 -0700403 seq_printf(m, "\nPending send_pending: %x ",
404 atomic_read(&server->smbd_conn->send_pending));
Long Li08a3b962017-11-22 17:38:48 -0700405 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
406 "count_empty_packet_queue: %x",
407 server->smbd_conn->count_receive_queue,
408 server->smbd_conn->count_empty_packet_queue);
409 seq_printf(m, "\nMR responder_resources: %x "
410 "max_frmr_depth: %x mr_type: %x",
411 server->smbd_conn->responder_resources,
412 server->smbd_conn->max_frmr_depth,
413 server->smbd_conn->mr_type);
414 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
415 atomic_read(&server->smbd_conn->mr_ready_count),
416 atomic_read(&server->smbd_conn->mr_used_count));
417skip_rdma:
418#endif
Shyam Prasad N2a44b3892023-06-09 17:46:55 +0000419 seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x",
420 server->credits,
421 server->echo_credits,
422 server->oplock_credits,
423 server->dialect);
Steve French26ea8882019-04-26 20:36:08 -0700424 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
425 seq_printf(m, " COMPRESS_LZNT1");
426 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
427 seq_printf(m, " COMPRESS_LZ77");
428 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
429 seq_printf(m, " COMPRESS_LZ77_HUFF");
Steve Frenchede2e522018-01-31 14:34:37 -0600430 if (server->sign)
431 seq_printf(m, " signed");
Steve Frenchfcef0db2018-05-19 20:45:27 -0500432 if (server->posix_ext_supported)
433 seq_printf(m, " posix");
Shyam Prasad Nc9f1c192021-11-06 11:31:53 +0000434 if (server->nosharesock)
435 seq_printf(m, " nosharesock");
Steve French0fdfef92018-06-28 19:30:23 -0500436
Shyam Prasad N52768692023-10-30 11:00:07 +0000437 seq_printf(m, "\nServer capabilities: 0x%x", server->capabilities);
438
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800439 if (server->rdma)
440 seq_printf(m, "\nRDMA ");
441 seq_printf(m, "\nTCP status: %d Instance: %d"
442 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
443 server->tcpStatus,
444 server->reconnect_instance,
445 server->srv_count,
446 server->sec_mode, in_flight(server));
Steve French7b38f6d2023-08-10 21:41:03 -0500447#ifdef CONFIG_NET_NS
448 if (server->net)
449 seq_printf(m, " Net namespace: %u ", server->net->ns.inum);
450#endif /* NET_NS */
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800451
452 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
453 atomic_read(&server->in_send),
454 atomic_read(&server->num_waiters));
Steve French7b38f6d2023-08-10 21:41:03 -0500455
Paulo Alcantara3ae872d2023-06-26 16:04:17 -0300456 if (server->leaf_fullpath) {
457 seq_printf(m, "\nDFS leaf full path: %s",
458 server->leaf_fullpath);
Paulo Alcantaraa1c0d002022-11-17 13:23:49 -0300459 }
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800460
461 seq_printf(m, "\n\n\tSessions: ");
462 i = 0;
Enzo Matsumiya9543c8a2022-07-22 14:02:59 -0300463 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
Paulo Alcantarad328c092023-10-24 13:49:15 -0300464 spin_lock(&ses->ses_lock);
465 if (ses->ses_status == SES_EXITING) {
466 spin_unlock(&ses->ses_lock);
467 continue;
468 }
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800469 i++;
Jeff Layton14fbf502008-11-14 13:53:46 -0500470 if ((ses->serverDomain == NULL) ||
471 (ses->serverOS == NULL) ||
472 (ses->serverNOS == NULL)) {
Steve French40f077a2021-02-21 23:00:46 -0600473 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
Steve Frenchb438fcf2021-02-20 19:24:11 -0600474 i, ses->ip_addr, ses->ses_count,
Shyam Prasad Ndd3cd872022-04-07 13:15:49 +0000475 ses->capabilities, ses->ses_status);
Steve French1fa089e2017-09-20 16:46:49 -0500476 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800477 seq_printf(m, "Guest ");
Steve French1fa089e2017-09-20 16:46:49 -0500478 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800479 seq_printf(m, "Anonymous ");
Jeff Layton14fbf502008-11-14 13:53:46 -0500480 } else {
481 seq_printf(m,
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800482 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s "
483 "\n\tNOS: %s\tCapability: 0x%x"
484 "\n\tSMB session status: %d ",
Steve Frenchb438fcf2021-02-20 19:24:11 -0600485 i, ses->ip_addr, ses->serverDomain,
Jeff Layton14fbf502008-11-14 13:53:46 -0500486 ses->ses_count, ses->serverOS, ses->serverNOS,
Shyam Prasad Ndd3cd872022-04-07 13:15:49 +0000487 ses->capabilities, ses->ses_status);
Jeff Layton14fbf502008-11-14 13:53:46 -0500488 }
Paulo Alcantarad328c092023-10-24 13:49:15 -0300489 spin_unlock(&ses->ses_lock);
Kenneth D'souza8e84a612020-06-04 21:14:41 +0530490
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800491 seq_printf(m, "\n\tSecurity type: %s ",
Kenneth D'souza0b0430c2020-06-09 10:12:10 +0530492 get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
Kenneth D'souza8e84a612020-06-04 21:14:41 +0530493
Steve Frenchb63a9de2019-05-08 22:41:37 -0500494 /* dump session id helpful for use with network trace */
495 seq_printf(m, " SessionId: 0x%llx", ses->Suid);
Steve French8b4dd442023-05-23 20:25:47 -0500496 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) {
Steve Frenchffd1ef12019-03-09 18:12:18 -0600497 seq_puts(m, " encrypted");
Steve French8b4dd442023-05-23 20:25:47 -0500498 /* can help in debugging to show encryption type */
499 if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)
500 seq_puts(m, "(gcm256)");
501 }
Steve Frenchffd1ef12019-03-09 18:12:18 -0600502 if (ses->sign)
503 seq_puts(m, " signed");
Steve French131afd0b2005-10-07 09:51:05 -0700504
Paul Aurichaadd69ca2020-06-26 12:58:04 -0700505 seq_printf(m, "\n\tUser: %d Cred User: %d",
506 from_kuid(&init_user_ns, ses->linux_uid),
507 from_kuid(&init_user_ns, ses->cred_uid));
508
Paulo Alcantaraf446a632023-03-14 20:32:55 -0300509 if (ses->dfs_root_ses) {
510 seq_printf(m, "\n\tDFS root session id: 0x%llx",
511 ses->dfs_root_ses->Suid);
512 }
513
Shyam Prasad N724244c2021-07-19 10:54:46 +0000514 spin_lock(&ses->chan_lock);
Shyam Prasad N66eb0c62021-07-19 14:01:32 +0000515 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0))
516 seq_puts(m, "\tPrimary channel: DISCONNECTED ");
Shyam Prasad N5752bf62022-04-08 13:31:37 +0000517 if (CIFS_CHAN_IN_RECONNECT(ses, 0))
518 seq_puts(m, "\t[RECONNECTING] ");
Shyam Prasad N66eb0c62021-07-19 14:01:32 +0000519
Aurelien Aptel85150922019-11-20 17:15:58 +0100520 if (ses->chan_count > 1) {
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800521 seq_printf(m, "\n\n\tExtra Channels: %zu ",
Aurelien Aptel85150922019-11-20 17:15:58 +0100522 ses->chan_count-1);
Shyam Prasad N66eb0c62021-07-19 14:01:32 +0000523 for (j = 1; j < ses->chan_count; j++) {
Aurelien Aptel85150922019-11-20 17:15:58 +0100524 cifs_dump_channel(m, j, &ses->chans[j]);
Shyam Prasad N66eb0c62021-07-19 14:01:32 +0000525 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j))
526 seq_puts(m, "\tDISCONNECTED ");
Shyam Prasad N5752bf62022-04-08 13:31:37 +0000527 if (CIFS_CHAN_IN_RECONNECT(ses, j))
528 seq_puts(m, "\t[RECONNECTING] ");
Shyam Prasad N66eb0c62021-07-19 14:01:32 +0000529 }
Aurelien Aptel85150922019-11-20 17:15:58 +0100530 }
Shyam Prasad N724244c2021-07-19 10:54:46 +0000531 spin_unlock(&ses->chan_lock);
Aurelien Aptel85150922019-11-20 17:15:58 +0100532
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800533 seq_puts(m, "\n\n\tShares: ");
Jeff Laytonf1987b42008-11-15 11:12:47 -0500534 j = 0;
Aurelien Aptel02cf5902018-01-24 13:46:12 +0100535
536 seq_printf(m, "\n\t%d) IPC: ", j);
537 if (ses->tcon_ipc)
538 cifs_debug_tcon(m, ses->tcon_ipc);
539 else
540 seq_puts(m, "none\n");
541
Enzo Matsumiya9543c8a2022-07-22 14:02:59 -0300542 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
Jeff Laytonf1987b42008-11-15 11:12:47 -0500543 ++j;
Aurelien Aptel02cf5902018-01-24 13:46:12 +0100544 seq_printf(m, "\n\t%d) ", j);
545 cifs_debug_tcon(m, tcon);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500546 }
547
Aurelien Aptelbc0fe8b2018-06-14 15:43:20 +0200548 spin_lock(&ses->iface_lock);
Steve French115d5d22018-06-14 21:59:31 -0500549 if (ses->iface_count)
Shyam Prasad N05844bd2022-12-23 10:41:25 +0000550 seq_printf(m, "\n\n\tServer interfaces: %zu"
551 "\tLast updated: %lu seconds ago",
552 ses->iface_count,
553 (jiffies - ses->iface_last_update) / HZ);
Shyam Prasad Na6d8fb52022-12-26 11:24:56 +0000554
555 last_iface = list_last_entry(&ses->iface_list,
556 struct cifs_server_iface,
557 iface_head);
558 iface_min_speed = last_iface->speed;
559
Shyam Prasad Naa45dad2022-01-01 12:50:21 +0000560 j = 0;
561 list_for_each_entry(iface, &ses->iface_list,
562 iface_head) {
563 seq_printf(m, "\n\t%d)", ++j);
Aurelien Aptel85150922019-11-20 17:15:58 +0100564 cifs_dump_iface(m, iface);
Shyam Prasad Na6d8fb52022-12-26 11:24:56 +0000565
566 iface_weight = iface->speed / iface_min_speed;
567 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)"
568 "\n\t\tAllocated channels: %u\n",
569 iface->weight_fulfilled,
570 iface_weight,
571 iface->num_channels);
572
Aurelien Aptel85150922019-11-20 17:15:58 +0100573 if (is_ses_using_iface(ses, iface))
574 seq_puts(m, "\t\t[CONNECTED]\n");
Aurelien Aptelbc0fe8b2018-06-14 15:43:20 +0200575 }
576 spin_unlock(&ses->iface_lock);
Shyam Prasad Nd12bc6d2023-03-13 11:09:12 +0000577
578 seq_puts(m, "\n\n\tMIDs: ");
579 spin_lock(&ses->chan_lock);
580 for (j = 0; j < ses->chan_count; j++) {
581 chan_server = ses->chans[j].server;
582 if (!chan_server)
583 continue;
584
585 if (list_empty(&chan_server->pending_mid_q))
586 continue;
587
588 seq_printf(m, "\n\tServer ConnectionId: 0x%llx",
589 chan_server->conn_id);
590 spin_lock(&chan_server->mid_lock);
591 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) {
592 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu",
593 mid_entry->mid_state,
594 le16_to_cpu(mid_entry->command),
595 mid_entry->pid,
596 mid_entry->callback_data,
597 mid_entry->mid);
598 }
599 spin_unlock(&chan_server->mid_lock);
600 }
601 spin_unlock(&ses->chan_lock);
602 seq_puts(m, "\n--\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 }
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800604 if (i == 0)
605 seq_printf(m, "\n\t\t[NONE]");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 }
Shyam Prasad N03e9bb1a2021-02-03 23:27:52 -0800607 if (c == 0)
608 seq_printf(m, "\n\t[NONE]");
609
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530610 spin_unlock(&cifs_tcp_ses_lock);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000611 seq_putc(m, '\n');
Samuel Cabrero20fab0d2020-11-30 19:02:53 +0100612 cifs_swn_dump(m);
Aurelien Aptelb7fd0fa2021-04-09 16:31:37 +0200613
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614 /* BB add code to dump additional info such as TCP session info now */
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000615 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616}
617
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000618static ssize_t cifs_stats_proc_write(struct file *file,
619 const char __user *buffer, size_t count, loff_t *ppos)
Steve French1047abc2005-10-11 19:58:06 -0700620{
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300621 bool bv;
Steve French221601c2007-06-05 20:35:06 +0000622 int rc;
Jeff Laytonf1987b42008-11-15 11:12:47 -0500623 struct TCP_Server_Info *server;
Steve French96daf2b2011-05-27 04:34:02 +0000624 struct cifs_ses *ses;
625 struct cifs_tcon *tcon;
Steve French1047abc2005-10-11 19:58:06 -0700626
Kees Cook14042972016-03-17 14:22:54 -0700627 rc = kstrtobool_from_user(buffer, count, &bv);
628 if (rc == 0) {
Steve French4498eed52005-12-03 13:58:57 -0800629#ifdef CONFIG_CIFS_STATS2
Steve French468d6772018-08-04 05:24:34 -0500630 int i;
631
Steve Frenchc2c17dd2022-07-15 23:45:45 -0500632 atomic_set(&total_buf_alloc_count, 0);
633 atomic_set(&total_small_buf_alloc_count, 0);
Steve French4498eed52005-12-03 13:58:57 -0800634#endif /* CONFIG_CIFS_STATS2 */
Steve French2c8876352018-09-15 23:04:41 -0500635 atomic_set(&tcpSesReconnectCount, 0);
636 atomic_set(&tconInfoReconnectCount, 0);
637
Steve Frenchc281bc02018-08-01 00:56:12 -0500638 spin_lock(&GlobalMid_Lock);
639 GlobalMaxActiveXid = 0;
640 GlobalCurrentXid = 0;
641 spin_unlock(&GlobalMid_Lock);
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530642 spin_lock(&cifs_tcp_ses_lock);
Enzo Matsumiya9543c8a2022-07-22 14:02:59 -0300643 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
Steve French1b63f182019-09-09 22:57:11 -0500644 server->max_in_flight = 0;
Steve French468d6772018-08-04 05:24:34 -0500645#ifdef CONFIG_CIFS_STATS2
Steve French433b8dd2019-03-26 13:53:21 -0500646 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
647 atomic_set(&server->num_cmds[i], 0);
Steve French468d6772018-08-04 05:24:34 -0500648 atomic_set(&server->smb2slowcmd[i], 0);
Steve French433b8dd2019-03-26 13:53:21 -0500649 server->time_per_cmd[i] = 0;
650 server->slowest_cmd[i] = 0;
651 server->fastest_cmd[0] = 0;
652 }
Steve French468d6772018-08-04 05:24:34 -0500653#endif /* CONFIG_CIFS_STATS2 */
Enzo Matsumiya9543c8a2022-07-22 14:02:59 -0300654 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
655 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
Jeff Laytonf1987b42008-11-15 11:12:47 -0500656 atomic_set(&tcon->num_smbs_sent, 0);
Steve Frenchc281bc02018-08-01 00:56:12 -0500657 spin_lock(&tcon->stat_lock);
658 tcon->bytes_read = 0;
659 tcon->bytes_written = 0;
660 spin_unlock(&tcon->stat_lock);
Pavel Shilovsky44c58182012-05-28 14:16:31 +0400661 if (server->ops->clear_stats)
662 server->ops->clear_stats(tcon);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500663 }
664 }
Steve French1047abc2005-10-11 19:58:06 -0700665 }
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530666 spin_unlock(&cifs_tcp_ses_lock);
Kees Cook14042972016-03-17 14:22:54 -0700667 } else {
668 return rc;
Steve French1047abc2005-10-11 19:58:06 -0700669 }
670
Steve French221601c2007-06-05 20:35:06 +0000671 return count;
Steve French1047abc2005-10-11 19:58:06 -0700672}
673
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000674static int cifs_stats_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675{
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000676 int i;
Steve French468d6772018-08-04 05:24:34 -0500677#ifdef CONFIG_CIFS_STATS2
678 int j;
679#endif /* STATS2 */
Jeff Laytonf1987b42008-11-15 11:12:47 -0500680 struct TCP_Server_Info *server;
Steve French96daf2b2011-05-27 04:34:02 +0000681 struct cifs_ses *ses;
682 struct cifs_tcon *tcon;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683
Steve French468d6772018-08-04 05:24:34 -0500684 seq_printf(m, "Resources in use\nCIFS Session: %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 sesInfoAllocCount.counter);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000686 seq_printf(m, "Share (unique mount targets): %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687 tconInfoAllocCount.counter);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000688 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
Steve Frenchc2c17dd2022-07-15 23:45:45 -0500689 buf_alloc_count.counter,
Steve Frenchb8643e12005-04-28 22:41:07 -0700690 cifs_min_rcv + tcpSesAllocCount.counter);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000691 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
Steve Frenchc2c17dd2022-07-15 23:45:45 -0500692 small_buf_alloc_count.counter, cifs_min_small);
Steve French07475ff2005-12-03 14:11:37 -0800693#ifdef CONFIG_CIFS_STATS2
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000694 seq_printf(m, "Total Large %d Small %d Allocations\n",
Steve Frenchc2c17dd2022-07-15 23:45:45 -0500695 atomic_read(&total_buf_alloc_count),
696 atomic_read(&total_small_buf_alloc_count));
Steve French07475ff2005-12-03 14:11:37 -0800697#endif /* CONFIG_CIFS_STATS2 */
698
Steve Frenchc2c17dd2022-07-15 23:45:45 -0500699 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count));
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000700 seq_printf(m,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 "\n%d session %d share reconnects\n",
Steve French221601c2007-06-05 20:35:06 +0000702 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000704 seq_printf(m,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 "Total vfs operations: %d maximum at one time: %d\n",
Steve French221601c2007-06-05 20:35:06 +0000706 GlobalCurrentXid, GlobalMaxActiveXid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707
708 i = 0;
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530709 spin_lock(&cifs_tcp_ses_lock);
Baokun Lia506ccb2021-06-17 19:36:40 +0800710 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
Steve French1b63f182019-09-09 22:57:11 -0500711 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
Steve French468d6772018-08-04 05:24:34 -0500712#ifdef CONFIG_CIFS_STATS2
Steve French433b8dd2019-03-26 13:53:21 -0500713 seq_puts(m, "\nTotal time spent processing by command. Time ");
714 seq_printf(m, "units are jiffies (%d per second)\n", HZ);
715 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
716 seq_puts(m, " --------\t------\t----------\t-------\t-------\n");
717 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
718 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j,
719 atomic_read(&server->num_cmds[j]),
720 server->time_per_cmd[j],
721 server->fastest_cmd[j],
722 server->slowest_cmd[j]);
Steve French468d6772018-08-04 05:24:34 -0500723 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
Paulo Alcantara90c49fc2023-04-21 15:52:32 -0300724 if (atomic_read(&server->smb2slowcmd[j])) {
725 spin_lock(&server->srv_lock);
Steve French433b8dd2019-03-26 13:53:21 -0500726 seq_printf(m, " %d slow responses from %s for command %d\n",
Steve French468d6772018-08-04 05:24:34 -0500727 atomic_read(&server->smb2slowcmd[j]),
728 server->hostname, j);
Paulo Alcantara90c49fc2023-04-21 15:52:32 -0300729 spin_unlock(&server->srv_lock);
730 }
Steve French468d6772018-08-04 05:24:34 -0500731#endif /* STATS2 */
Enzo Matsumiya9543c8a2022-07-22 14:02:59 -0300732 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
733 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
Jeff Laytonf1987b42008-11-15 11:12:47 -0500734 i++;
Steve French68e14562022-09-21 14:05:53 -0500735 seq_printf(m, "\n%d) %s", i, tcon->tree_name);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500736 if (tcon->need_reconnect)
737 seq_puts(m, "\tDISCONNECTED ");
Pavel Shilovsky44c58182012-05-28 14:16:31 +0400738 seq_printf(m, "\nSMBs: %d",
739 atomic_read(&tcon->num_smbs_sent));
740 if (server->ops->print_stats)
741 server->ops->print_stats(m, tcon);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500742 }
743 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 }
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530745 spin_unlock(&cifs_tcp_ses_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000747 seq_putc(m, '\n');
748 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000750
751static int cifs_stats_proc_open(struct inode *inode, struct file *file)
752{
753 return single_open(file, cifs_stats_proc_show, NULL);
754}
755
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800756static const struct proc_ops cifs_stats_proc_ops = {
757 .proc_open = cifs_stats_proc_open,
758 .proc_read = seq_read,
759 .proc_lseek = seq_lseek,
760 .proc_release = single_release,
761 .proc_write = cifs_stats_proc_write,
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000762};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763
Long Lid8ec9132017-11-07 01:54:58 -0700764#ifdef CONFIG_CIFS_SMB_DIRECT
765#define PROC_FILE_DEFINE(name) \
766static ssize_t name##_write(struct file *file, const char __user *buffer, \
767 size_t count, loff_t *ppos) \
768{ \
769 int rc; \
Steve French43960dc2023-11-06 13:31:45 -0600770 rc = kstrtoint_from_user(buffer, count, 10, &name); \
Long Lid8ec9132017-11-07 01:54:58 -0700771 if (rc) \
772 return rc; \
773 return count; \
774} \
775static int name##_proc_show(struct seq_file *m, void *v) \
776{ \
Steve French43960dc2023-11-06 13:31:45 -0600777 seq_printf(m, "%d\n", name); \
Long Lid8ec9132017-11-07 01:54:58 -0700778 return 0; \
779} \
780static int name##_open(struct inode *inode, struct file *file) \
781{ \
782 return single_open(file, name##_proc_show, NULL); \
783} \
784\
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800785static const struct proc_ops cifs_##name##_proc_fops = { \
786 .proc_open = name##_open, \
787 .proc_read = seq_read, \
788 .proc_lseek = seq_lseek, \
789 .proc_release = single_release, \
790 .proc_write = name##_write, \
Long Lid8ec9132017-11-07 01:54:58 -0700791}
792
Long Lid8ec9132017-11-07 01:54:58 -0700793PROC_FILE_DEFINE(rdma_readwrite_threshold);
794PROC_FILE_DEFINE(smbd_max_frmr_depth);
795PROC_FILE_DEFINE(smbd_keep_alive_interval);
796PROC_FILE_DEFINE(smbd_max_receive_size);
797PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
798PROC_FILE_DEFINE(smbd_max_send_size);
799PROC_FILE_DEFINE(smbd_send_credit_target);
800PROC_FILE_DEFINE(smbd_receive_credit_max);
801#endif
802
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803static struct proc_dir_entry *proc_fs_cifs;
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800804static const struct proc_ops cifsFYI_proc_ops;
805static const struct proc_ops cifs_lookup_cache_proc_ops;
806static const struct proc_ops traceSMB_proc_ops;
807static const struct proc_ops cifs_security_flags_proc_ops;
808static const struct proc_ops cifs_linux_ext_proc_ops;
Aurelien Aptel94b0595a2021-03-18 13:52:59 +0100809static const struct proc_ops cifs_mount_params_proc_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810
811void
812cifs_proc_init(void)
813{
Alexey Dobriyan36a5aeb2008-04-29 01:01:42 -0700814 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 if (proc_fs_cifs == NULL)
816 return;
817
Christoph Hellwig3f3942a2018-05-15 15:57:23 +0200818 proc_create_single("DebugData", 0, proc_fs_cifs,
819 cifs_debug_data_proc_show);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820
Steve Frenchdfe33f92018-10-30 19:50:31 -0500821 proc_create_single("open_files", 0400, proc_fs_cifs,
822 cifs_debug_files_proc_show);
823
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800824 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
825 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
826 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000827 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800828 &cifs_linux_ext_proc_ops);
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000829 proc_create("SecurityFlags", 0644, proc_fs_cifs,
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800830 &cifs_security_flags_proc_ops);
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000831 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800832 &cifs_lookup_cache_proc_ops);
Paulo Alcantara54be1f62018-11-14 16:01:21 -0200833
Aurelien Aptel94b0595a2021-03-18 13:52:59 +0100834 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops);
835
Paulo Alcantara54be1f62018-11-14 16:01:21 -0200836#ifdef CONFIG_CIFS_DFS_UPCALL
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800837 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
Paulo Alcantara54be1f62018-11-14 16:01:21 -0200838#endif
839
Long Lid8ec9132017-11-07 01:54:58 -0700840#ifdef CONFIG_CIFS_SMB_DIRECT
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000841 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
Long Lid8ec9132017-11-07 01:54:58 -0700842 &cifs_rdma_readwrite_threshold_proc_fops);
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000843 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
Long Lid8ec9132017-11-07 01:54:58 -0700844 &cifs_smbd_max_frmr_depth_proc_fops);
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000845 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
Long Lid8ec9132017-11-07 01:54:58 -0700846 &cifs_smbd_keep_alive_interval_proc_fops);
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000847 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
Long Lid8ec9132017-11-07 01:54:58 -0700848 &cifs_smbd_max_receive_size_proc_fops);
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000849 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
Long Lid8ec9132017-11-07 01:54:58 -0700850 &cifs_smbd_max_fragmented_recv_size_proc_fops);
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000851 proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
Long Lid8ec9132017-11-07 01:54:58 -0700852 &cifs_smbd_max_send_size_proc_fops);
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000853 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
Long Lid8ec9132017-11-07 01:54:58 -0700854 &cifs_smbd_send_credit_target_proc_fops);
Ronnie Sahlberg6539e7f2018-05-24 14:18:05 +1000855 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
Long Lid8ec9132017-11-07 01:54:58 -0700856 &cifs_smbd_receive_credit_max_proc_fops);
857#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858}
859
860void
861cifs_proc_clean(void)
862{
863 if (proc_fs_cifs == NULL)
864 return;
865
866 remove_proc_entry("DebugData", proc_fs_cifs);
Steve Frenchdfe33f92018-10-30 19:50:31 -0500867 remove_proc_entry("open_files", proc_fs_cifs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868 remove_proc_entry("cifsFYI", proc_fs_cifs);
869 remove_proc_entry("traceSMB", proc_fs_cifs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870 remove_proc_entry("Stats", proc_fs_cifs);
Steve French221601c2007-06-05 20:35:06 +0000871 remove_proc_entry("SecurityFlags", proc_fs_cifs);
Steve French221601c2007-06-05 20:35:06 +0000872 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
Steve French221601c2007-06-05 20:35:06 +0000873 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
Aurelien Aptel94b0595a2021-03-18 13:52:59 +0100874 remove_proc_entry("mount_params", proc_fs_cifs);
Paulo Alcantara54be1f62018-11-14 16:01:21 -0200875
876#ifdef CONFIG_CIFS_DFS_UPCALL
877 remove_proc_entry("dfscache", proc_fs_cifs);
878#endif
Long Lid8ec9132017-11-07 01:54:58 -0700879#ifdef CONFIG_CIFS_SMB_DIRECT
880 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
881 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
882 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
883 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
884 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
885 remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
886 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
887 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
888#endif
Alexey Dobriyan36a5aeb2008-04-29 01:01:42 -0700889 remove_proc_entry("fs/cifs", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890}
891
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000892static int cifsFYI_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893{
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000894 seq_printf(m, "%d\n", cifsFYI);
895 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000897
898static int cifsFYI_proc_open(struct inode *inode, struct file *file)
899{
900 return single_open(file, cifsFYI_proc_show, NULL);
901}
902
903static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
904 size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905{
Kees Cook14042972016-03-17 14:22:54 -0700906 char c[2] = { '\0' };
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300907 bool bv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908 int rc;
909
Kees Cook14042972016-03-17 14:22:54 -0700910 rc = get_user(c[0], buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911 if (rc)
912 return rc;
Christophe JAILLET9f5d1a82023-01-14 09:58:15 +0100913 if (kstrtobool(c, &bv) == 0)
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300914 cifsFYI = bv;
Kees Cook14042972016-03-17 14:22:54 -0700915 else if ((c[0] > '1') && (c[0] <= '9'))
916 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
Ronnie Sahlberg25ad1cb2018-05-24 09:53:39 +1000917 else
918 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919
920 return count;
921}
922
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800923static const struct proc_ops cifsFYI_proc_ops = {
924 .proc_open = cifsFYI_proc_open,
925 .proc_read = seq_read,
926 .proc_lseek = seq_lseek,
927 .proc_release = single_release,
928 .proc_write = cifsFYI_proc_write,
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000929};
930
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000931static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932{
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000933 seq_printf(m, "%d\n", linuxExtEnabled);
934 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000936
937static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
938{
939 return single_open(file, cifs_linux_ext_proc_show, NULL);
940}
941
942static ssize_t cifs_linux_ext_proc_write(struct file *file,
943 const char __user *buffer, size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944{
Steve French221601c2007-06-05 20:35:06 +0000945 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946
Kees Cook14042972016-03-17 14:22:54 -0700947 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
Steve French221601c2007-06-05 20:35:06 +0000948 if (rc)
949 return rc;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300950
Steve French221601c2007-06-05 20:35:06 +0000951 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952}
953
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800954static const struct proc_ops cifs_linux_ext_proc_ops = {
955 .proc_open = cifs_linux_ext_proc_open,
956 .proc_read = seq_read,
957 .proc_lseek = seq_lseek,
958 .proc_release = single_release,
959 .proc_write = cifs_linux_ext_proc_write,
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000960};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000962static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963{
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000964 seq_printf(m, "%d\n", lookupCacheEnabled);
965 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000967
968static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
969{
970 return single_open(file, cifs_lookup_cache_proc_show, NULL);
971}
972
973static ssize_t cifs_lookup_cache_proc_write(struct file *file,
974 const char __user *buffer, size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700976 int rc;
977
Kees Cook14042972016-03-17 14:22:54 -0700978 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979 if (rc)
980 return rc;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300981
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982 return count;
983}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000984
Alexey Dobriyan97a32532020-02-03 17:37:17 -0800985static const struct proc_ops cifs_lookup_cache_proc_ops = {
986 .proc_open = cifs_lookup_cache_proc_open,
987 .proc_read = seq_read,
988 .proc_lseek = seq_lseek,
989 .proc_release = single_release,
990 .proc_write = cifs_lookup_cache_proc_write,
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000991};
992
993static int traceSMB_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994{
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000995 seq_printf(m, "%d\n", traceSMB);
996 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000998
999static int traceSMB_proc_open(struct inode *inode, struct file *file)
1000{
1001 return single_open(file, traceSMB_proc_show, NULL);
1002}
1003
1004static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
1005 size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007 int rc;
1008
Kees Cook14042972016-03-17 14:22:54 -07001009 rc = kstrtobool_from_user(buffer, count, &traceSMB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010 if (rc)
1011 return rc;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +03001012
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013 return count;
1014}
1015
Alexey Dobriyan97a32532020-02-03 17:37:17 -08001016static const struct proc_ops traceSMB_proc_ops = {
1017 .proc_open = traceSMB_proc_open,
1018 .proc_read = seq_read,
1019 .proc_lseek = seq_lseek,
1020 .proc_release = single_release,
1021 .proc_write = traceSMB_proc_write,
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +00001022};
1023
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +00001024static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025{
Jeff Layton04912d62010-04-24 07:57:45 -04001026 seq_printf(m, "0x%x\n", global_secflags);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +00001027 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +00001029
1030static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
1031{
1032 return single_open(file, cifs_security_flags_proc_show, NULL);
1033}
1034
Jeff Layton52dfb442013-05-26 07:01:02 -04001035/*
1036 * Ensure that if someone sets a MUST flag, that we disable all other MAY
1037 * flags except for the ones corresponding to the given MUST flag. If there are
1038 * multiple MUST flags, then try to prefer more secure ones.
1039 */
1040static void
1041cifs_security_flags_handle_must_flags(unsigned int *flags)
1042{
1043 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
1044
1045 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
1046 *flags = CIFSSEC_MUST_KRB5;
1047 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
1048 *flags = CIFSSEC_MUST_NTLMSSP;
1049 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
1050 *flags = CIFSSEC_MUST_NTLMV2;
Jeff Layton52dfb442013-05-26 07:01:02 -04001051
1052 *flags |= signflags;
1053}
1054
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +00001055static ssize_t cifs_security_flags_proc_write(struct file *file,
1056 const char __user *buffer, size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057{
Jeff Layton7715dad2013-05-26 07:01:01 -04001058 int rc;
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001059 unsigned int flags;
1060 char flags_string[12];
Andy Shevchenko28e2aed2014-08-27 16:49:42 +03001061 bool bv;
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001062
Steve French221601c2007-06-05 20:35:06 +00001063 if ((count < 1) || (count > 11))
Steve French39798772006-05-31 22:40:51 +00001064 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001066 memset(flags_string, 0, 12);
Steve French39798772006-05-31 22:40:51 +00001067
Steve French221601c2007-06-05 20:35:06 +00001068 if (copy_from_user(flags_string, buffer, count))
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001069 return -EFAULT;
Steve French39798772006-05-31 22:40:51 +00001070
Steve French221601c2007-06-05 20:35:06 +00001071 if (count < 3) {
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001072 /* single char or single char followed by null */
Christophe JAILLET9f5d1a82023-01-14 09:58:15 +01001073 if (kstrtobool(flags_string, &bv) == 0) {
Andy Shevchenko28e2aed2014-08-27 16:49:42 +03001074 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
Steve Frencha0136892007-10-04 20:05:09 +00001075 return count;
Kees Cook14042972016-03-17 14:22:54 -07001076 } else if (!isdigit(flags_string[0])) {
Jeff Layton7715dad2013-05-26 07:01:01 -04001077 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
1078 flags_string);
Steve Frencha0136892007-10-04 20:05:09 +00001079 return -EINVAL;
1080 }
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001081 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082
Jeff Layton7715dad2013-05-26 07:01:01 -04001083 /* else we have a number */
1084 rc = kstrtouint(flags_string, 0, &flags);
1085 if (rc) {
1086 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
1087 flags_string);
1088 return rc;
1089 }
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001090
Joe Perchesf96637b2013-05-04 22:12:25 -05001091 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001092
Jeff Layton7715dad2013-05-26 07:01:01 -04001093 if (flags == 0) {
1094 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001095 return -EINVAL;
1096 }
1097
Steve French221601c2007-06-05 20:35:06 +00001098 if (flags & ~CIFSSEC_MASK) {
Jeff Layton7715dad2013-05-26 07:01:01 -04001099 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
Joe Perchesf96637b2013-05-04 22:12:25 -05001100 flags & ~CIFSSEC_MASK);
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001101 return -EINVAL;
1102 }
Jeff Layton7715dad2013-05-26 07:01:01 -04001103
Jeff Layton52dfb442013-05-26 07:01:02 -04001104 cifs_security_flags_handle_must_flags(&flags);
1105
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +00001106 /* flags look ok - update the global security flags for cifs module */
Jeff Layton04912d62010-04-24 07:57:45 -04001107 global_secflags = flags;
1108 if (global_secflags & CIFSSEC_MUST_SIGN) {
Steve French762e5ab2007-06-28 18:41:42 +00001109 /* requiring signing implies signing is allowed */
Jeff Layton04912d62010-04-24 07:57:45 -04001110 global_secflags |= CIFSSEC_MAY_SIGN;
Joe Perchesf96637b2013-05-04 22:12:25 -05001111 cifs_dbg(FYI, "packet signing now required\n");
Jeff Layton04912d62010-04-24 07:57:45 -04001112 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
Joe Perchesf96637b2013-05-04 22:12:25 -05001113 cifs_dbg(FYI, "packet signing disabled\n");
Steve French762e5ab2007-06-28 18:41:42 +00001114 }
1115 /* BB should we turn on MAY flags for other MUST options? */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001116 return count;
1117}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +00001118
Alexey Dobriyan97a32532020-02-03 17:37:17 -08001119static const struct proc_ops cifs_security_flags_proc_ops = {
1120 .proc_open = cifs_security_flags_proc_open,
1121 .proc_read = seq_read,
1122 .proc_lseek = seq_lseek,
1123 .proc_release = single_release,
1124 .proc_write = cifs_security_flags_proc_write,
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +00001125};
Aurelien Aptel94b0595a2021-03-18 13:52:59 +01001126
1127/* To make it easier to debug, can help to show mount params */
1128static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
1129{
1130 const struct fs_parameter_spec *p;
1131 const char *type;
1132
1133 for (p = smb3_fs_parameters; p->name; p++) {
1134 /* cannot use switch with pointers... */
1135 if (!p->type) {
1136 if (p->flags == fs_param_neg_with_no)
1137 type = "noflag";
1138 else
1139 type = "flag";
1140 } else if (p->type == fs_param_is_bool)
1141 type = "bool";
1142 else if (p->type == fs_param_is_u32)
1143 type = "u32";
1144 else if (p->type == fs_param_is_u64)
1145 type = "u64";
1146 else if (p->type == fs_param_is_string)
1147 type = "string";
1148 else
1149 type = "unknown";
1150
1151 seq_printf(m, "%s:%s\n", p->name, type);
1152 }
1153
1154 return 0;
1155}
1156
1157static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
1158{
1159 return single_open(file, cifs_mount_params_proc_show, NULL);
1160}
1161
1162static const struct proc_ops cifs_mount_params_proc_ops = {
1163 .proc_open = cifs_mount_params_proc_open,
1164 .proc_read = seq_read,
1165 .proc_lseek = seq_lseek,
1166 .proc_release = single_release,
1167 /* No need for write for now */
1168 /* .proc_write = cifs_mount_params_proc_write, */
1169};
1170
Steve French90c81e02008-02-12 20:32:36 +00001171#else
Steve Frenche086fce2008-02-18 04:03:58 +00001172inline void cifs_proc_init(void)
Steve French90c81e02008-02-12 20:32:36 +00001173{
1174}
1175
Steve Frenche086fce2008-02-18 04:03:58 +00001176inline void cifs_proc_clean(void)
Steve French90c81e02008-02-12 20:32:36 +00001177{
1178}
1179#endif /* PROC_FS */