Steve French | 929be90 | 2021-06-18 00:31:49 -0500 | [diff] [blame] | 1 | // SPDX-License-Identifier: LGPL-2.1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Steve French | 2b280fa | 2008-05-17 03:12:45 +0000 | [diff] [blame] | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 6 | * |
| 7 | * Common Internet FileSystem (CIFS) client |
| 8 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | */ |
| 10 | |
| 11 | /* Note that BB means BUGBUG (ie something to fix eventually) */ |
| 12 | |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/fs.h> |
Jeff Layton | 5970e15 | 2022-11-20 09:15:34 -0500 | [diff] [blame] | 15 | #include <linux/filelock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <linux/mount.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/list.h> |
| 20 | #include <linux/seq_file.h> |
| 21 | #include <linux/vfs.h> |
| 22 | #include <linux/mempool.h> |
Steve French | 6ab16d2 | 2005-11-29 20:55:11 -0800 | [diff] [blame] | 23 | #include <linux/delay.h> |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 24 | #include <linux/kthread.h> |
Nigel Cunningham | 7dfb710 | 2006-12-06 20:34:23 -0800 | [diff] [blame] | 25 | #include <linux/freezer.h> |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 26 | #include <linux/namei.h> |
Pavel Shilovsky | b8c32db | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 27 | #include <linux/random.h> |
Andrew Lunn | c6e970a | 2017-03-28 23:45:06 +0200 | [diff] [blame] | 28 | #include <linux/uuid.h> |
Andreas Gruenbacher | a9ae008 | 2016-04-22 12:11:38 +0200 | [diff] [blame] | 29 | #include <linux/xattr.h> |
Jeff Layton | dea2903 | 2022-01-10 19:00:02 -0500 | [diff] [blame] | 30 | #include <uapi/linux/magic.h> |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 31 | #include <net/ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "cifsfs.h" |
| 33 | #include "cifspdu.h" |
| 34 | #define DECLARE_GLOBALS_HERE |
| 35 | #include "cifsglob.h" |
| 36 | #include "cifsproto.h" |
| 37 | #include "cifs_debug.h" |
| 38 | #include "cifs_fs_sb.h" |
| 39 | #include <linux/mm.h> |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 40 | #include <linux/key-type.h> |
Jeff Layton | e545937 | 2007-11-03 05:11:06 +0000 | [diff] [blame] | 41 | #include "cifs_spnego.h" |
Suresh Jayaraman | f579cf3 | 2010-07-05 18:11:50 +0530 | [diff] [blame] | 42 | #include "fscache.h" |
Paulo Alcantara | 1c78022 | 2018-11-14 16:24:03 -0200 | [diff] [blame] | 43 | #ifdef CONFIG_CIFS_DFS_UPCALL |
| 44 | #include "dfs_cache.h" |
| 45 | #endif |
Samuel Cabrero | 06f08da | 2020-11-30 19:02:49 +0100 | [diff] [blame] | 46 | #ifdef CONFIG_CIFS_SWN_UPCALL |
| 47 | #include "netlink.h" |
| 48 | #endif |
Ronnie Sahlberg | 3fa1c6d | 2020-12-09 23:07:12 -0600 | [diff] [blame] | 49 | #include "fs_context.h" |
Ronnie Sahlberg | 05b98fd | 2022-08-10 22:00:08 -0500 | [diff] [blame] | 50 | #include "cached_dir.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
Deepa Dinamani | cb7a69e | 2019-03-22 14:32:35 -0700 | [diff] [blame] | 52 | /* |
| 53 | * DOS dates from 1980/1/1 through 2107/12/31 |
| 54 | * Protocol specifications indicate the range should be to 119, which |
| 55 | * limits maximum year to 2099. But this range has not been checked. |
| 56 | */ |
| 57 | #define SMB_DATE_MAX (127<<9 | 12<<5 | 31) |
| 58 | #define SMB_DATE_MIN (0<<9 | 1<<5 | 1) |
| 59 | #define SMB_TIME_MAX (23<<11 | 59<<5 | 29) |
| 60 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | int cifsFYI = 0; |
Kees Cook | 1404297 | 2016-03-17 14:22:54 -0700 | [diff] [blame] | 62 | bool traceSMB; |
Steve French | e750473 | 2011-10-12 17:47:03 -0500 | [diff] [blame] | 63 | bool enable_oplocks = true; |
Kees Cook | 1404297 | 2016-03-17 14:22:54 -0700 | [diff] [blame] | 64 | bool linuxExtEnabled = true; |
| 65 | bool lookupCacheEnabled = true; |
Steve French | f92a720 | 2018-05-24 04:11:07 -0500 | [diff] [blame] | 66 | bool disable_legacy_dialects; /* false by default */ |
Steve French | fee742b | 2021-04-27 23:07:19 -0500 | [diff] [blame] | 67 | bool enable_gcm_256 = true; |
Steve French | fbfd0b4 | 2020-09-11 16:19:28 -0500 | [diff] [blame] | 68 | bool require_gcm_256; /* false by default */ |
Steve French | 53d31a3 | 2021-07-05 15:05:39 -0500 | [diff] [blame] | 69 | bool enable_negotiate_signing; /* false by default */ |
Jeff Layton | 04912d6 | 2010-04-24 07:57:45 -0400 | [diff] [blame] | 70 | unsigned int global_secflags = CIFSSEC_DEF; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 71 | /* unsigned int ntlmv2_support = 0; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | unsigned int sign_CIFS_PDUs = 1; |
Steve French | 1bfa25e | 2022-07-24 22:47:59 -0500 | [diff] [blame] | 73 | |
| 74 | /* |
| 75 | * Global transaction id (XID) information |
| 76 | */ |
| 77 | unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */ |
| 78 | unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */ |
| 79 | unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */ |
| 80 | spinlock_t GlobalMid_Lock; /* protects above & list operations on midQ entries */ |
| 81 | |
| 82 | /* |
| 83 | * Global counters, updated atomically |
| 84 | */ |
| 85 | atomic_t sesInfoAllocCount; |
| 86 | atomic_t tconInfoAllocCount; |
| 87 | atomic_t tcpSesNextId; |
| 88 | atomic_t tcpSesAllocCount; |
| 89 | atomic_t tcpSesReconnectCount; |
| 90 | atomic_t tconInfoReconnectCount; |
| 91 | |
Steve French | c2c17dd | 2022-07-15 23:45:45 -0500 | [diff] [blame] | 92 | atomic_t mid_count; |
| 93 | atomic_t buf_alloc_count; |
| 94 | atomic_t small_buf_alloc_count; |
| 95 | #ifdef CONFIG_CIFS_STATS2 |
| 96 | atomic_t total_buf_alloc_count; |
| 97 | atomic_t total_small_buf_alloc_count; |
| 98 | #endif/* STATS2 */ |
Steve French | 89e42f4 | 2022-07-15 23:57:08 -0500 | [diff] [blame] | 99 | struct list_head cifs_tcp_ses_list; |
| 100 | spinlock_t cifs_tcp_ses_lock; |
Josef 'Jeff' Sipek | ee9b6d6 | 2007-02-12 00:55:41 -0800 | [diff] [blame] | 101 | static const struct super_operations cifs_super_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE; |
Germano Percossi | cb978ac | 2016-09-30 21:25:24 -0500 | [diff] [blame] | 103 | module_param(CIFSMaxBufSize, uint, 0444); |
Steve French | 11911b9 | 2018-05-24 02:09:20 -0500 | [diff] [blame] | 104 | MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header) " |
| 105 | "for CIFS requests. " |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 106 | "Default: 16384 Range: 8192 to 130048"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL; |
Germano Percossi | cb978ac | 2016-09-30 21:25:24 -0500 | [diff] [blame] | 108 | module_param(cifs_min_rcv, uint, 0444); |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 109 | MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: " |
| 110 | "1 to 64"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | unsigned int cifs_min_small = 30; |
Germano Percossi | cb978ac | 2016-09-30 21:25:24 -0500 | [diff] [blame] | 112 | module_param(cifs_min_small, uint, 0444); |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 113 | MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 " |
| 114 | "Range: 2 to 256"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | unsigned int cifs_max_pending = CIFS_MAX_REQ; |
Jeff Layton | 60654ce | 2012-11-25 08:00:34 -0500 | [diff] [blame] | 116 | module_param(cifs_max_pending, uint, 0444); |
Steve French | 11911b9 | 2018-05-24 02:09:20 -0500 | [diff] [blame] | 117 | MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server for " |
| 118 | "CIFS/SMB1 dialect (N/A for SMB3) " |
Pavel Shilovsky | 10b9b98 | 2012-03-20 12:55:09 +0300 | [diff] [blame] | 119 | "Default: 32767 Range: 2 to 32767."); |
Steve French | 00778e2 | 2018-09-18 14:05:18 -0500 | [diff] [blame] | 120 | #ifdef CONFIG_CIFS_STATS2 |
| 121 | unsigned int slow_rsp_threshold = 1; |
| 122 | module_param(slow_rsp_threshold, uint, 0644); |
| 123 | MODULE_PARM_DESC(slow_rsp_threshold, "Amount of time (in seconds) to wait " |
| 124 | "before logging that a response is delayed. " |
| 125 | "Default: 1 (if set to 0 disables msg)."); |
| 126 | #endif /* STATS2 */ |
| 127 | |
Steve French | e750473 | 2011-10-12 17:47:03 -0500 | [diff] [blame] | 128 | module_param(enable_oplocks, bool, 0644); |
Jeff Layton | 60654ce | 2012-11-25 08:00:34 -0500 | [diff] [blame] | 129 | MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks. Default: y/Y/1"); |
Steve French | e750473 | 2011-10-12 17:47:03 -0500 | [diff] [blame] | 130 | |
Steve French | 29e2792 | 2020-10-14 20:24:09 -0500 | [diff] [blame] | 131 | module_param(enable_gcm_256, bool, 0644); |
| 132 | MODULE_PARM_DESC(enable_gcm_256, "Enable requesting strongest (256 bit) GCM encryption. Default: n/N/0"); |
| 133 | |
Steve French | fbfd0b4 | 2020-09-11 16:19:28 -0500 | [diff] [blame] | 134 | module_param(require_gcm_256, bool, 0644); |
| 135 | MODULE_PARM_DESC(require_gcm_256, "Require strongest (256 bit) GCM encryption. Default: n/N/0"); |
| 136 | |
Steve French | 53d31a3 | 2021-07-05 15:05:39 -0500 | [diff] [blame] | 137 | module_param(enable_negotiate_signing, bool, 0644); |
| 138 | MODULE_PARM_DESC(enable_negotiate_signing, "Enable negotiating packet signing algorithm with server. Default: n/N/0"); |
| 139 | |
Steve French | f92a720 | 2018-05-24 04:11:07 -0500 | [diff] [blame] | 140 | module_param(disable_legacy_dialects, bool, 0644); |
| 141 | MODULE_PARM_DESC(disable_legacy_dialects, "To improve security it may be " |
| 142 | "helpful to restrict the ability to " |
| 143 | "override the default dialects (SMB2.1, " |
| 144 | "SMB3 and SMB3.02) on mount with old " |
| 145 | "dialects (CIFS/SMB1 and SMB2) since " |
| 146 | "vers=1.0 (CIFS/SMB1) and vers=2.0 are weaker" |
| 147 | " and less secure. Default: n/N/0"); |
| 148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | extern mempool_t *cifs_sm_req_poolp; |
| 150 | extern mempool_t *cifs_req_poolp; |
| 151 | extern mempool_t *cifs_mid_poolp; |
| 152 | |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 153 | struct workqueue_struct *cifsiod_wq; |
Steve French | 35cf94a | 2019-09-07 01:09:49 -0500 | [diff] [blame] | 154 | struct workqueue_struct *decrypt_wq; |
Ronnie Sahlberg | 32546a9 | 2019-11-03 13:06:37 +1000 | [diff] [blame] | 155 | struct workqueue_struct *fileinfo_put_wq; |
Rabin Vincent | 3998e6b8 | 2017-05-03 17:54:01 +0200 | [diff] [blame] | 156 | struct workqueue_struct *cifsoplockd_wq; |
Rohith Surabattula | 860b69a | 2021-05-05 10:56:47 +0000 | [diff] [blame] | 157 | struct workqueue_struct *deferredclose_wq; |
Jeff Layton | 3d22462 | 2016-05-24 06:27:44 -0400 | [diff] [blame] | 158 | __u32 cifs_lock_secret; |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 159 | |
Mateusz Guzik | 24261fc | 2013-03-08 16:30:03 +0100 | [diff] [blame] | 160 | /* |
| 161 | * Bumps refcount for cifs super block. |
| 162 | * Note that it should be only called if a referece to VFS super block is |
| 163 | * already held, e.g. in open-type syscalls context. Otherwise it can race with |
| 164 | * atomic_dec_and_test in deactivate_locked_super. |
| 165 | */ |
| 166 | void |
| 167 | cifs_sb_active(struct super_block *sb) |
| 168 | { |
| 169 | struct cifs_sb_info *server = CIFS_SB(sb); |
| 170 | |
| 171 | if (atomic_inc_return(&server->active) == 1) |
| 172 | atomic_inc(&sb->s_active); |
| 173 | } |
| 174 | |
| 175 | void |
| 176 | cifs_sb_deactive(struct super_block *sb) |
| 177 | { |
| 178 | struct cifs_sb_info *server = CIFS_SB(sb); |
| 179 | |
| 180 | if (atomic_dec_and_test(&server->active)) |
| 181 | deactivate_super(sb); |
| 182 | } |
| 183 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | static int |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 185 | cifs_read_super(struct super_block *sb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | { |
| 187 | struct inode *inode; |
Pavel Shilovsky | b2e5cd3 | 2011-05-25 13:35:34 +0400 | [diff] [blame] | 188 | struct cifs_sb_info *cifs_sb; |
Jan Klos | 2f6c947 | 2013-10-06 21:08:20 +0200 | [diff] [blame] | 189 | struct cifs_tcon *tcon; |
Deepa Dinamani | cb7a69e | 2019-03-22 14:32:35 -0700 | [diff] [blame] | 190 | struct timespec64 ts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | int rc = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 192 | |
Pavel Shilovsky | b2e5cd3 | 2011-05-25 13:35:34 +0400 | [diff] [blame] | 193 | cifs_sb = CIFS_SB(sb); |
Jan Klos | 2f6c947 | 2013-10-06 21:08:20 +0200 | [diff] [blame] | 194 | tcon = cifs_sb_master_tcon(cifs_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 196 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL) |
Linus Torvalds | 1751e8a | 2017-11-27 13:05:09 -0800 | [diff] [blame] | 197 | sb->s_flags |= SB_POSIXACL; |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 198 | |
Steve French | 8a69e96 | 2018-06-29 16:06:15 -0500 | [diff] [blame] | 199 | if (tcon->snapshot_time) |
| 200 | sb->s_flags |= SB_RDONLY; |
| 201 | |
Jan Klos | 2f6c947 | 2013-10-06 21:08:20 +0200 | [diff] [blame] | 202 | if (tcon->ses->capabilities & tcon->ses->server->vals->cap_large_files) |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 203 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
| 204 | else |
| 205 | sb->s_maxbytes = MAX_NON_LFS; |
| 206 | |
Steve French | 553292a | 2019-10-11 17:36:13 -0700 | [diff] [blame] | 207 | /* |
| 208 | * Some very old servers like DOS and OS/2 used 2 second granularity |
| 209 | * (while all current servers use 100ns granularity - see MS-DTYP) |
| 210 | * but 1 second is the maximum allowed granularity for the VFS |
| 211 | * so for old servers set time granularity to 1 second while for |
| 212 | * everything else (current servers) set it to 100ns. |
| 213 | */ |
Steve French | d4cfbf0 | 2019-10-08 00:27:14 -0500 | [diff] [blame] | 214 | if ((tcon->ses->server->vals->protocol_id == SMB10_PROT_ID) && |
| 215 | ((tcon->ses->capabilities & |
| 216 | tcon->ses->server->vals->cap_nt_find) == 0) && |
| 217 | !tcon->unix_ext) { |
| 218 | sb->s_time_gran = 1000000000; /* 1 second is max allowed gran */ |
| 219 | ts = cnvrtDosUnixTm(cpu_to_le16(SMB_DATE_MIN), 0, 0); |
| 220 | sb->s_time_min = ts.tv_sec; |
| 221 | ts = cnvrtDosUnixTm(cpu_to_le16(SMB_DATE_MAX), |
| 222 | cpu_to_le16(SMB_TIME_MAX), 0); |
| 223 | sb->s_time_max = ts.tv_sec; |
| 224 | } else { |
| 225 | /* |
| 226 | * Almost every server, including all SMB2+, uses DCE TIME |
| 227 | * ie 100 nanosecond units, since 1601. See MS-DTYP and MS-FSCC |
| 228 | */ |
| 229 | sb->s_time_gran = 100; |
Deepa Dinamani | cb7a69e | 2019-03-22 14:32:35 -0700 | [diff] [blame] | 230 | ts = cifs_NTtimeToUnix(0); |
| 231 | sb->s_time_min = ts.tv_sec; |
| 232 | ts = cifs_NTtimeToUnix(cpu_to_le64(S64_MAX)); |
| 233 | sb->s_time_max = ts.tv_sec; |
Deepa Dinamani | cb7a69e | 2019-03-22 14:32:35 -0700 | [diff] [blame] | 234 | } |
| 235 | |
Jeff Layton | dea2903 | 2022-01-10 19:00:02 -0500 | [diff] [blame] | 236 | sb->s_magic = CIFS_SUPER_MAGIC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | sb->s_op = &cifs_super_ops; |
Andreas Gruenbacher | a9ae008 | 2016-04-22 12:11:38 +0200 | [diff] [blame] | 238 | sb->s_xattr = cifs_xattr_handlers; |
Jan Kara | 851ea08 | 2017-04-12 12:24:34 +0200 | [diff] [blame] | 239 | rc = super_setup_bdi(sb); |
| 240 | if (rc) |
| 241 | goto out_no_root; |
Steve French | b8d64f8 | 2021-04-24 21:46:23 -0500 | [diff] [blame] | 242 | /* tune readahead according to rsize if readahead size not set on mount */ |
Rohith Surabattula | 06a4665 | 2022-03-07 18:37:22 +0000 | [diff] [blame] | 243 | if (cifs_sb->ctx->rsize == 0) |
| 244 | cifs_sb->ctx->rsize = |
| 245 | tcon->ses->server->ops->negotiate_rsize(tcon, cifs_sb->ctx); |
Steve French | b8d64f8 | 2021-04-24 21:46:23 -0500 | [diff] [blame] | 246 | if (cifs_sb->ctx->rasize) |
| 247 | sb->s_bdi->ra_pages = cifs_sb->ctx->rasize / PAGE_SIZE; |
| 248 | else |
| 249 | sb->s_bdi->ra_pages = cifs_sb->ctx->rsize / PAGE_SIZE; |
Jan Kara | 851ea08 | 2017-04-12 12:24:34 +0200 | [diff] [blame] | 250 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | sb->s_blocksize = CIFS_MAX_MSGSIZE; |
| 252 | sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */ |
Shirish Pargaonkar | 9b6763e | 2011-02-21 23:56:59 -0600 | [diff] [blame] | 253 | inode = cifs_root_iget(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 255 | if (IS_ERR(inode)) { |
| 256 | rc = PTR_ERR(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | goto out_no_root; |
| 258 | } |
| 259 | |
Jan Klos | 2f6c947 | 2013-10-06 21:08:20 +0200 | [diff] [blame] | 260 | if (tcon->nocase) |
Jeff Layton | 66ffd11 | 2013-07-30 11:38:44 -0400 | [diff] [blame] | 261 | sb->s_d_op = &cifs_ci_dentry_ops; |
| 262 | else |
| 263 | sb->s_d_op = &cifs_dentry_ops; |
| 264 | |
Al Viro | 48fde70 | 2012-01-08 22:15:13 -0500 | [diff] [blame] | 265 | sb->s_root = d_make_root(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | if (!sb->s_root) { |
| 267 | rc = -ENOMEM; |
| 268 | goto out_no_root; |
| 269 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 270 | |
Paul Bolle | f3a6a60 | 2011-10-12 14:14:04 +0200 | [diff] [blame] | 271 | #ifdef CONFIG_CIFS_NFSD_EXPORT |
Steve French | 7521a3c | 2007-07-11 18:30:34 +0000 | [diff] [blame] | 272 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 273 | cifs_dbg(FYI, "export ops supported\n"); |
Steve French | 7521a3c | 2007-07-11 18:30:34 +0000 | [diff] [blame] | 274 | sb->s_export_op = &cifs_export_ops; |
| 275 | } |
Paul Bolle | f3a6a60 | 2011-10-12 14:14:04 +0200 | [diff] [blame] | 276 | #endif /* CONFIG_CIFS_NFSD_EXPORT */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
| 278 | return 0; |
| 279 | |
| 280 | out_no_root: |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 281 | cifs_dbg(VFS, "%s: get root inode failed\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | return rc; |
| 283 | } |
| 284 | |
Al Viro | 6d68617 | 2011-06-17 08:34:57 -0400 | [diff] [blame] | 285 | static void cifs_kill_sb(struct super_block *sb) |
| 286 | { |
| 287 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Ronnie Sahlberg | 269f67e | 2021-03-09 09:07:30 +1000 | [diff] [blame] | 288 | |
Ronnie Sahlberg | 5e9c89d | 2021-03-09 09:07:31 +1000 | [diff] [blame] | 289 | /* |
| 290 | * We ned to release all dentries for the cached directories |
| 291 | * before we kill the sb. |
| 292 | */ |
Ronnie Sahlberg | 269f67e | 2021-03-09 09:07:30 +1000 | [diff] [blame] | 293 | if (cifs_sb->root) { |
Ronnie Sahlberg | 05b98fd | 2022-08-10 22:00:08 -0500 | [diff] [blame] | 294 | close_all_cached_dirs(cifs_sb); |
Shyam Prasad N | d788e51 | 2022-04-01 06:25:17 +0000 | [diff] [blame] | 295 | |
| 296 | /* finally release root dentry */ |
Ronnie Sahlberg | 269f67e | 2021-03-09 09:07:30 +1000 | [diff] [blame] | 297 | dput(cifs_sb->root); |
| 298 | cifs_sb->root = NULL; |
| 299 | } |
| 300 | |
Al Viro | 6d68617 | 2011-06-17 08:34:57 -0400 | [diff] [blame] | 301 | kill_anon_super(sb); |
Al Viro | 98ab494 | 2011-06-17 09:32:10 -0400 | [diff] [blame] | 302 | cifs_umount(cifs_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | static int |
David Howells | 726c334 | 2006-06-23 02:02:58 -0700 | [diff] [blame] | 306 | cifs_statfs(struct dentry *dentry, struct kstatfs *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | { |
David Howells | 726c334 | 2006-06-23 02:02:58 -0700 | [diff] [blame] | 308 | struct super_block *sb = dentry->d_sb; |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 309 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 310 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
Pavel Shilovsky | 76ec5e3 | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 311 | struct TCP_Server_Info *server = tcon->ses->server; |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 312 | unsigned int xid; |
Pavel Shilovsky | 76ec5e3 | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 313 | int rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 315 | xid = get_xid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | |
Steve French | 21ba384 | 2018-06-24 23:18:52 -0500 | [diff] [blame] | 317 | if (le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength) > 0) |
| 318 | buf->f_namelen = |
| 319 | le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength); |
| 320 | else |
| 321 | buf->f_namelen = PATH_MAX; |
| 322 | |
| 323 | buf->f_fsid.val[0] = tcon->vol_serial_number; |
| 324 | /* are using part of create time for more randomness, see man statfs */ |
| 325 | buf->f_fsid.val[1] = (int)le64_to_cpu(tcon->vol_create_time); |
| 326 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | buf->f_files = 0; /* undefined */ |
| 328 | buf->f_ffree = 0; /* unlimited */ |
| 329 | |
Pavel Shilovsky | 76ec5e3 | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 330 | if (server->ops->queryfs) |
Amir Goldstein | 0f06093 | 2020-02-03 21:46:43 +0200 | [diff] [blame] | 331 | rc = server->ops->queryfs(xid, tcon, cifs_sb, buf); |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 332 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 333 | free_xid(xid); |
Paulo Alcantara | 14302ee | 2021-03-08 12:00:49 -0300 | [diff] [blame] | 334 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | } |
| 336 | |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 337 | static long cifs_fallocate(struct file *file, int mode, loff_t off, loff_t len) |
| 338 | { |
Al Viro | 7119e22 | 2014-10-22 00:25:12 -0400 | [diff] [blame] | 339 | struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file); |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 340 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
| 341 | struct TCP_Server_Info *server = tcon->ses->server; |
| 342 | |
| 343 | if (server->ops->fallocate) |
| 344 | return server->ops->fallocate(file, tcon, mode, off, len); |
| 345 | |
| 346 | return -EOPNOTSUPP; |
| 347 | } |
| 348 | |
Christian Brauner | 4609e1f | 2023-01-13 12:49:22 +0100 | [diff] [blame] | 349 | static int cifs_permission(struct mnt_idmap *idmap, |
Christian Brauner | 549c729 | 2021-01-21 14:19:43 +0100 | [diff] [blame] | 350 | struct inode *inode, int mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | { |
| 352 | struct cifs_sb_info *cifs_sb; |
| 353 | |
| 354 | cifs_sb = CIFS_SB(inode->i_sb); |
| 355 | |
Miklos Szeredi | f696a36 | 2008-07-31 13:41:58 +0200 | [diff] [blame] | 356 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) { |
| 357 | if ((mask & MAY_EXEC) && !execute_ok(inode)) |
| 358 | return -EACCES; |
| 359 | else |
| 360 | return 0; |
| 361 | } else /* file mode might have been restricted at mount time |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 362 | on the client (above and beyond ACL on servers) for |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | servers which do not support setting and viewing mode bits, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 364 | so allowing client to check permissions is useful */ |
Christian Brauner | 4609e1f | 2023-01-13 12:49:22 +0100 | [diff] [blame] | 365 | return generic_permission(&nop_mnt_idmap, inode, mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | } |
| 367 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 368 | static struct kmem_cache *cifs_inode_cachep; |
| 369 | static struct kmem_cache *cifs_req_cachep; |
| 370 | static struct kmem_cache *cifs_mid_cachep; |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 371 | static struct kmem_cache *cifs_sm_req_cachep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | mempool_t *cifs_sm_req_poolp; |
| 373 | mempool_t *cifs_req_poolp; |
| 374 | mempool_t *cifs_mid_poolp; |
| 375 | |
| 376 | static struct inode * |
| 377 | cifs_alloc_inode(struct super_block *sb) |
| 378 | { |
| 379 | struct cifsInodeInfo *cifs_inode; |
Muchun Song | fd60b28 | 2022-03-22 14:41:03 -0700 | [diff] [blame] | 380 | cifs_inode = alloc_inode_sb(sb, cifs_inode_cachep, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | if (!cifs_inode) |
| 382 | return NULL; |
| 383 | cifs_inode->cifsAttrs = 0x20; /* default */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | cifs_inode->time = 0; |
Pavel Shilovsky | b8c32db | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 385 | /* |
| 386 | * Until the file is open and we have gotten oplock info back from the |
| 387 | * server, can not assume caching of file data or metadata. |
| 388 | */ |
Pavel Shilovsky | c672362 | 2010-11-03 10:58:57 +0300 | [diff] [blame] | 389 | cifs_set_oplock_level(cifs_inode, 0); |
Jeff Layton | aff8d5c | 2014-04-30 09:31:45 -0400 | [diff] [blame] | 390 | cifs_inode->flags = 0; |
Sachin Prabhu | c11f1df | 2014-03-11 16:11:47 +0000 | [diff] [blame] | 391 | spin_lock_init(&cifs_inode->writers_lock); |
| 392 | cifs_inode->writers = 0; |
David Howells | 874c8ca1 | 2022-06-09 21:46:04 +0100 | [diff] [blame] | 393 | cifs_inode->netfs.inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ |
Jeff Layton | fbec9ab | 2009-04-03 13:44:00 -0400 | [diff] [blame] | 394 | cifs_inode->server_eof = 0; |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 395 | cifs_inode->uniqueid = 0; |
| 396 | cifs_inode->createtime = 0; |
Pavel Shilovsky | 42873b0 | 2013-09-05 21:30:16 +0400 | [diff] [blame] | 397 | cifs_inode->epoch = 0; |
Ronnie Sahlberg | 487317c | 2019-06-05 10:38:38 +1000 | [diff] [blame] | 398 | spin_lock_init(&cifs_inode->open_file_lock); |
Steve French | fa70b87 | 2016-09-22 00:39:34 -0500 | [diff] [blame] | 399 | generate_random_uuid(cifs_inode->lease_key); |
Paulo Alcantara | 76894f3 | 2022-10-03 18:43:50 -0300 | [diff] [blame] | 400 | cifs_inode->symlink_target = NULL; |
Steve French | 2a38e12 | 2017-07-08 18:48:15 -0500 | [diff] [blame] | 401 | |
Pavel Shilovsky | b8c32db | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 402 | /* |
| 403 | * Can not set i_flags here - they get immediately overwritten to zero |
| 404 | * by the VFS. |
| 405 | */ |
David Howells | 874c8ca1 | 2022-06-09 21:46:04 +0100 | [diff] [blame] | 406 | /* cifs_inode->netfs.inode.i_flags = S_NOATIME | S_NOCMTIME; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | INIT_LIST_HEAD(&cifs_inode->openFileList); |
Pavel Shilovsky | f45d341 | 2012-09-19 06:22:43 -0700 | [diff] [blame] | 408 | INIT_LIST_HEAD(&cifs_inode->llist); |
Rohith Surabattula | c3f207ab | 2021-04-13 00:26:42 -0500 | [diff] [blame] | 409 | INIT_LIST_HEAD(&cifs_inode->deferred_closes); |
| 410 | spin_lock_init(&cifs_inode->deferred_lock); |
David Howells | 874c8ca1 | 2022-06-09 21:46:04 +0100 | [diff] [blame] | 411 | return &cifs_inode->netfs.inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | static void |
Al Viro | c2e6802 | 2019-04-14 23:18:35 -0400 | [diff] [blame] | 415 | cifs_free_inode(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | { |
Paulo Alcantara | 76894f3 | 2022-10-03 18:43:50 -0300 | [diff] [blame] | 417 | struct cifsInodeInfo *cinode = CIFS_I(inode); |
| 418 | |
| 419 | if (S_ISLNK(inode->i_mode)) |
| 420 | kfree(cinode->symlink_target); |
| 421 | kmem_cache_free(cifs_inode_cachep, cinode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | } |
| 423 | |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 424 | static void |
Al Viro | b57922d | 2010-06-07 14:34:48 -0400 | [diff] [blame] | 425 | cifs_evict_inode(struct inode *inode) |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 426 | { |
Johannes Weiner | 91b0abe | 2014-04-03 14:47:49 -0700 | [diff] [blame] | 427 | truncate_inode_pages_final(&inode->i_data); |
David Howells | 70431bf | 2020-11-17 15:56:59 +0000 | [diff] [blame] | 428 | if (inode->i_state & I_PINNING_FSCACHE_WB) |
| 429 | cifs_fscache_unuse_inode_cookie(inode, true); |
| 430 | cifs_fscache_release_inode_cookie(inode); |
Jan Kara | dbd5768 | 2012-05-03 14:48:02 +0200 | [diff] [blame] | 431 | clear_inode(inode); |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 432 | } |
| 433 | |
| 434 | static void |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 435 | cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server) |
| 436 | { |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 437 | struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr; |
| 438 | struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr; |
| 439 | |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 440 | seq_puts(s, ",addr="); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 441 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 442 | switch (server->dstaddr.ss_family) { |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 443 | case AF_INET: |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 444 | seq_printf(s, "%pI4", &sa->sin_addr.s_addr); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 445 | break; |
| 446 | case AF_INET6: |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 447 | seq_printf(s, "%pI6", &sa6->sin6_addr.s6_addr); |
| 448 | if (sa6->sin6_scope_id) |
| 449 | seq_printf(s, "%%%u", sa6->sin6_scope_id); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 450 | break; |
| 451 | default: |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 452 | seq_puts(s, "(unknown)"); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 453 | } |
Long Li | 8339dd3 | 2017-11-07 01:54:55 -0700 | [diff] [blame] | 454 | if (server->rdma) |
| 455 | seq_puts(s, ",rdma"); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 456 | } |
| 457 | |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 458 | static void |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 459 | cifs_show_security(struct seq_file *s, struct cifs_ses *ses) |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 460 | { |
Steve French | eda2116 | 2015-09-11 19:24:19 -0500 | [diff] [blame] | 461 | if (ses->sectype == Unspecified) { |
| 462 | if (ses->user_name == NULL) |
| 463 | seq_puts(s, ",sec=none"); |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 464 | return; |
Steve French | eda2116 | 2015-09-11 19:24:19 -0500 | [diff] [blame] | 465 | } |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 466 | |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 467 | seq_puts(s, ",sec="); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 468 | |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 469 | switch (ses->sectype) { |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 470 | case NTLMv2: |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 471 | seq_puts(s, "ntlmv2"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 472 | break; |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 473 | case Kerberos: |
Petr Pavlu | 3f6166a | 2020-02-10 10:38:14 +0100 | [diff] [blame] | 474 | seq_puts(s, "krb5"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 475 | break; |
| 476 | case RawNTLMSSP: |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 477 | seq_puts(s, "ntlmssp"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 478 | break; |
| 479 | default: |
| 480 | /* shouldn't ever happen */ |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 481 | seq_puts(s, "unknown"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 482 | break; |
| 483 | } |
| 484 | |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 485 | if (ses->sign) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 486 | seq_puts(s, "i"); |
Petr Pavlu | 3f6166a | 2020-02-10 10:38:14 +0100 | [diff] [blame] | 487 | |
| 488 | if (ses->sectype == Kerberos) |
| 489 | seq_printf(s, ",cruid=%u", |
| 490 | from_kuid_munged(&init_user_ns, ses->cred_uid)); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 491 | } |
| 492 | |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 493 | static void |
| 494 | cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb) |
| 495 | { |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 496 | seq_puts(s, ",cache="); |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 497 | |
| 498 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 499 | seq_puts(s, "strict"); |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 500 | else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 501 | seq_puts(s, "none"); |
Steve French | 41e033f | 2019-08-30 02:12:41 -0500 | [diff] [blame] | 502 | else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE) |
| 503 | seq_puts(s, "singleclient"); /* assume only one client access */ |
Steve French | 83bbfa7 | 2019-08-27 23:58:54 -0500 | [diff] [blame] | 504 | else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE) |
| 505 | seq_puts(s, "ro"); /* read only caching assumed */ |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 506 | else |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 507 | seq_puts(s, "loose"); |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 508 | } |
| 509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | /* |
Steve French | 653a5ef | 2020-12-14 20:08:10 -0600 | [diff] [blame] | 511 | * cifs_show_devname() is used so we show the mount device name with correct |
| 512 | * format (e.g. forward slashes vs. back slashes) in /proc/mounts |
| 513 | */ |
| 514 | static int cifs_show_devname(struct seq_file *m, struct dentry *root) |
| 515 | { |
| 516 | struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb); |
Ronnie Sahlberg | af1a3d2 | 2021-02-11 16:06:16 +1000 | [diff] [blame] | 517 | char *devname = kstrdup(cifs_sb->ctx->source, GFP_KERNEL); |
Steve French | 653a5ef | 2020-12-14 20:08:10 -0600 | [diff] [blame] | 518 | |
| 519 | if (devname == NULL) |
| 520 | seq_puts(m, "none"); |
| 521 | else { |
| 522 | convert_delimiter(devname, '/'); |
Maciek Borzecki | 0fc9322 | 2021-04-06 17:02:29 +0200 | [diff] [blame] | 523 | /* escape all spaces in share names */ |
| 524 | seq_escape(m, devname, " \t"); |
Steve French | 653a5ef | 2020-12-14 20:08:10 -0600 | [diff] [blame] | 525 | kfree(devname); |
| 526 | } |
| 527 | return 0; |
| 528 | } |
| 529 | |
| 530 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | * cifs_show_options() is for displaying mount options in /proc/mounts. |
| 532 | * Not all settable options are displayed but most of the important |
| 533 | * ones are. |
| 534 | */ |
| 535 | static int |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 536 | cifs_show_options(struct seq_file *s, struct dentry *root) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | { |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 538 | struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 539 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 540 | struct sockaddr *srcaddr; |
| 541 | srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | |
Kees Cook | a068acf | 2015-09-04 15:44:57 -0700 | [diff] [blame] | 543 | seq_show_option(s, "vers", tcon->ses->server->vals->version_string); |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 544 | cifs_show_security(s, tcon->ses); |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 545 | cifs_show_cache_flavor(s, cifs_sb); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 546 | |
Steve French | 3e7a02d | 2019-09-11 21:46:20 -0500 | [diff] [blame] | 547 | if (tcon->no_lease) |
| 548 | seq_puts(s, ",nolease"); |
Ronnie Sahlberg | 9ccecae | 2020-12-14 16:40:19 +1000 | [diff] [blame] | 549 | if (cifs_sb->ctx->multiuser) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 550 | seq_puts(s, ",multiuser"); |
Steve French | 8727c8a | 2011-02-25 01:11:56 -0600 | [diff] [blame] | 551 | else if (tcon->ses->user_name) |
Kees Cook | a068acf | 2015-09-04 15:44:57 -0700 | [diff] [blame] | 552 | seq_show_option(s, "username", tcon->ses->user_name); |
Jeff Layton | 29e07c8 | 2010-09-29 19:51:12 -0400 | [diff] [blame] | 553 | |
Ronnie Sahlberg | e55954a | 2018-08-10 11:31:10 +1000 | [diff] [blame] | 554 | if (tcon->ses->domainName && tcon->ses->domainName[0] != 0) |
Kees Cook | a068acf | 2015-09-04 15:44:57 -0700 | [diff] [blame] | 555 | seq_show_option(s, "domain", tcon->ses->domainName); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 556 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 557 | if (srcaddr->sa_family != AF_UNSPEC) { |
| 558 | struct sockaddr_in *saddr4; |
| 559 | struct sockaddr_in6 *saddr6; |
| 560 | saddr4 = (struct sockaddr_in *)srcaddr; |
| 561 | saddr6 = (struct sockaddr_in6 *)srcaddr; |
| 562 | if (srcaddr->sa_family == AF_INET6) |
| 563 | seq_printf(s, ",srcaddr=%pI6c", |
| 564 | &saddr6->sin6_addr); |
| 565 | else if (srcaddr->sa_family == AF_INET) |
| 566 | seq_printf(s, ",srcaddr=%pI4", |
| 567 | &saddr4->sin_addr.s_addr); |
| 568 | else |
| 569 | seq_printf(s, ",srcaddr=BAD-AF:%i", |
| 570 | (int)(srcaddr->sa_family)); |
| 571 | } |
| 572 | |
Eric W. Biederman | 1f68233 | 2013-02-06 01:20:20 -0800 | [diff] [blame] | 573 | seq_printf(s, ",uid=%u", |
Ronnie Sahlberg | 8401e93 | 2020-12-12 13:40:50 -0600 | [diff] [blame] | 574 | from_kuid_munged(&init_user_ns, cifs_sb->ctx->linux_uid)); |
Jeff Layton | 340481a3 | 2009-06-11 10:27:29 -0400 | [diff] [blame] | 575 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 576 | seq_puts(s, ",forceuid"); |
Jeff Layton | 4486d6e | 2009-08-03 12:45:10 -0400 | [diff] [blame] | 577 | else |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 578 | seq_puts(s, ",noforceuid"); |
Jeff Layton | 340481a3 | 2009-06-11 10:27:29 -0400 | [diff] [blame] | 579 | |
Eric W. Biederman | 1f68233 | 2013-02-06 01:20:20 -0800 | [diff] [blame] | 580 | seq_printf(s, ",gid=%u", |
Ronnie Sahlberg | 8401e93 | 2020-12-12 13:40:50 -0600 | [diff] [blame] | 581 | from_kgid_munged(&init_user_ns, cifs_sb->ctx->linux_gid)); |
Jeff Layton | 340481a3 | 2009-06-11 10:27:29 -0400 | [diff] [blame] | 582 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 583 | seq_puts(s, ",forcegid"); |
Jeff Layton | 4486d6e | 2009-08-03 12:45:10 -0400 | [diff] [blame] | 584 | else |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 585 | seq_puts(s, ",noforcegid"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 586 | |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 587 | cifs_show_address(s, tcon->ses->server); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 588 | |
| 589 | if (!tcon->unix_ext) |
Al Viro | 5206efd | 2011-07-26 03:22:14 -0400 | [diff] [blame] | 590 | seq_printf(s, ",file_mode=0%ho,dir_mode=0%ho", |
Ronnie Sahlberg | 8401e93 | 2020-12-12 13:40:50 -0600 | [diff] [blame] | 591 | cifs_sb->ctx->file_mode, |
| 592 | cifs_sb->ctx->dir_mode); |
Ronnie Sahlberg | 7c7ee62 | 2020-12-14 16:40:22 +1000 | [diff] [blame] | 593 | if (cifs_sb->ctx->iocharset) |
| 594 | seq_printf(s, ",iocharset=%s", cifs_sb->ctx->iocharset); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 595 | if (tcon->seal) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 596 | seq_puts(s, ",seal"); |
Steve French | ec57010 | 2020-02-19 23:59:32 -0600 | [diff] [blame] | 597 | else if (tcon->ses->server->ignore_signature) |
| 598 | seq_puts(s, ",signloosely"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 599 | if (tcon->nocase) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 600 | seq_puts(s, ",nocase"); |
Steve French | 82e9367 | 2020-05-19 03:06:57 -0500 | [diff] [blame] | 601 | if (tcon->nodelete) |
| 602 | seq_puts(s, ",nodelete"); |
Steve French | 5283225 | 2022-05-23 23:17:12 -0500 | [diff] [blame] | 603 | if (cifs_sb->ctx->no_sparse) |
| 604 | seq_puts(s, ",nosparse"); |
Kenneth D'souza | c8b6ac1 | 2019-01-21 11:51:59 +1000 | [diff] [blame] | 605 | if (tcon->local_lease) |
| 606 | seq_puts(s, ",locallease"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 607 | if (tcon->retry) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 608 | seq_puts(s, ",hard"); |
Ronnie Sahlberg | 6e82e92 | 2017-09-20 13:09:23 +1000 | [diff] [blame] | 609 | else |
| 610 | seq_puts(s, ",soft"); |
Steve French | f16dfa7 | 2015-09-30 21:07:59 -0500 | [diff] [blame] | 611 | if (tcon->use_persistent) |
| 612 | seq_puts(s, ",persistenthandles"); |
Steve French | 592fafe | 2015-11-03 10:08:53 -0600 | [diff] [blame] | 613 | else if (tcon->use_resilient) |
| 614 | seq_puts(s, ",resilienthandles"); |
Steve French | b326614 | 2018-05-20 23:41:10 -0500 | [diff] [blame] | 615 | if (tcon->posix_extensions) |
| 616 | seq_puts(s, ",posix"); |
| 617 | else if (tcon->unix_ext) |
| 618 | seq_puts(s, ",unix"); |
| 619 | else |
| 620 | seq_puts(s, ",nounix"); |
Aurelien Aptel | 8393072 | 2018-09-20 18:10:25 -0700 | [diff] [blame] | 621 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS) |
| 622 | seq_puts(s, ",nodfs"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 623 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 624 | seq_puts(s, ",posixpaths"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 625 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 626 | seq_puts(s, ",setuids"); |
Steve French | 9593265 | 2016-09-23 01:36:34 -0500 | [diff] [blame] | 627 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL) |
| 628 | seq_puts(s, ",idsfromsid"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 629 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 630 | seq_puts(s, ",serverino"); |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 631 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 632 | seq_puts(s, ",rwpidforward"); |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 633 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 634 | seq_puts(s, ",forcemand"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 635 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 636 | seq_puts(s, ",nouser_xattr"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 637 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 638 | seq_puts(s, ",mapchars"); |
Nakajima Akira | bc8ebdc4 | 2015-02-13 15:35:58 +0900 | [diff] [blame] | 639 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR) |
| 640 | seq_puts(s, ",mapposix"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 641 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 642 | seq_puts(s, ",sfu"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 643 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 644 | seq_puts(s, ",nobrl"); |
Steve French | 3d4ef9a1 | 2018-04-25 22:19:09 -0500 | [diff] [blame] | 645 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_HANDLE_CACHE) |
| 646 | seq_puts(s, ",nohandlecache"); |
Steve French | 412094a | 2019-06-24 02:01:42 -0500 | [diff] [blame] | 647 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID) |
| 648 | seq_puts(s, ",modefromsid"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 649 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 650 | seq_puts(s, ",cifsacl"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 651 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 652 | seq_puts(s, ",dynperm"); |
Linus Torvalds | 1751e8a | 2017-11-27 13:05:09 -0800 | [diff] [blame] | 653 | if (root->d_sb->s_flags & SB_POSIXACL) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 654 | seq_puts(s, ",acl"); |
Stefan Metzmacher | 736a3320 | 2010-07-30 14:56:00 +0200 | [diff] [blame] | 655 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 656 | seq_puts(s, ",mfsymlinks"); |
Suresh Jayaraman | 476428f | 2010-11-24 17:49:07 +0530 | [diff] [blame] | 657 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 658 | seq_puts(s, ",fsc"); |
Steve French | 71c424b | 2011-10-19 20:44:48 -0500 | [diff] [blame] | 659 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 660 | seq_puts(s, ",nostrictsync"); |
Steve French | 71c424b | 2011-10-19 20:44:48 -0500 | [diff] [blame] | 661 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 662 | seq_puts(s, ",noperm"); |
Sachin Prabhu | 3c7c87f | 2012-04-24 15:28:14 +0100 | [diff] [blame] | 663 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID) |
Eric W. Biederman | 1f68233 | 2013-02-06 01:20:20 -0800 | [diff] [blame] | 664 | seq_printf(s, ",backupuid=%u", |
| 665 | from_kuid_munged(&init_user_ns, |
Ronnie Sahlberg | 8401e93 | 2020-12-12 13:40:50 -0600 | [diff] [blame] | 666 | cifs_sb->ctx->backupuid)); |
Sachin Prabhu | 3c7c87f | 2012-04-24 15:28:14 +0100 | [diff] [blame] | 667 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) |
Eric W. Biederman | 1f68233 | 2013-02-06 01:20:20 -0800 | [diff] [blame] | 668 | seq_printf(s, ",backupgid=%u", |
| 669 | from_kgid_munged(&init_user_ns, |
Ronnie Sahlberg | 8401e93 | 2020-12-12 13:40:50 -0600 | [diff] [blame] | 670 | cifs_sb->ctx->backupgid)); |
Steve French | 2b280fa | 2008-05-17 03:12:45 +0000 | [diff] [blame] | 671 | |
Steve French | 0c2b5f7 | 2020-12-15 13:28:50 -0600 | [diff] [blame] | 672 | seq_printf(s, ",rsize=%u", cifs_sb->ctx->rsize); |
| 673 | seq_printf(s, ",wsize=%u", cifs_sb->ctx->wsize); |
| 674 | seq_printf(s, ",bsize=%u", cifs_sb->ctx->bsize); |
Steve French | b8d64f8 | 2021-04-24 21:46:23 -0500 | [diff] [blame] | 675 | if (cifs_sb->ctx->rasize) |
| 676 | seq_printf(s, ",rasize=%u", cifs_sb->ctx->rasize); |
Steve French | 563317e | 2019-09-08 23:22:02 -0500 | [diff] [blame] | 677 | if (tcon->ses->server->min_offload) |
| 678 | seq_printf(s, ",esize=%u", tcon->ses->server->min_offload); |
Steve French | adfeb3e | 2015-12-18 12:31:36 -0600 | [diff] [blame] | 679 | seq_printf(s, ",echo_interval=%lu", |
| 680 | tcon->ses->server->echo_interval / HZ); |
Steve French | dc17926 | 2019-06-17 17:34:57 -0500 | [diff] [blame] | 681 | |
Steve French | 2bfd810 | 2022-12-11 13:54:21 -0600 | [diff] [blame] | 682 | /* Only display the following if overridden on mount */ |
Steve French | dc17926 | 2019-06-17 17:34:57 -0500 | [diff] [blame] | 683 | if (tcon->ses->server->max_credits != SMB2_MAX_CREDITS_AVAILABLE) |
| 684 | seq_printf(s, ",max_credits=%u", tcon->ses->server->max_credits); |
Steve French | 2bfd810 | 2022-12-11 13:54:21 -0600 | [diff] [blame] | 685 | if (tcon->ses->server->tcp_nodelay) |
| 686 | seq_puts(s, ",tcpnodelay"); |
| 687 | if (tcon->ses->server->noautotune) |
| 688 | seq_puts(s, ",noautotune"); |
| 689 | if (tcon->ses->server->noblocksnd) |
| 690 | seq_puts(s, ",noblocksend"); |
Steve French | dc17926 | 2019-06-17 17:34:57 -0500 | [diff] [blame] | 691 | |
Steve French | 8a69e96 | 2018-06-29 16:06:15 -0500 | [diff] [blame] | 692 | if (tcon->snapshot_time) |
| 693 | seq_printf(s, ",snapshot=%llu", tcon->snapshot_time); |
Steve French | ca567eb | 2019-03-29 16:31:07 -0500 | [diff] [blame] | 694 | if (tcon->handle_timeout) |
| 695 | seq_printf(s, ",handletimeout=%u", tcon->handle_timeout); |
Steve French | 5780464 | 2021-02-24 12:12:53 -0600 | [diff] [blame] | 696 | |
| 697 | /* |
| 698 | * Display file and directory attribute timeout in seconds. |
| 699 | * If file and directory attribute timeout the same then actimeo |
| 700 | * was likely specified on mount |
| 701 | */ |
| 702 | if (cifs_sb->ctx->acdirmax == cifs_sb->ctx->acregmax) |
| 703 | seq_printf(s, ",actimeo=%lu", cifs_sb->ctx->acregmax / HZ); |
| 704 | else { |
| 705 | seq_printf(s, ",acdirmax=%lu", cifs_sb->ctx->acdirmax / HZ); |
| 706 | seq_printf(s, ",acregmax=%lu", cifs_sb->ctx->acregmax / HZ); |
| 707 | } |
Steve French | 5efdd91 | 2022-08-11 00:53:00 -0500 | [diff] [blame] | 708 | seq_printf(s, ",closetimeo=%lu", cifs_sb->ctx->closetimeo / HZ); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 709 | |
Aurelien Aptel | bcc8880 | 2019-09-20 04:32:20 +0200 | [diff] [blame] | 710 | if (tcon->ses->chan_max > 1) |
Steve French | 7866c17 | 2020-06-09 19:50:40 -0500 | [diff] [blame] | 711 | seq_printf(s, ",multichannel,max_channels=%zu", |
Aurelien Aptel | bcc8880 | 2019-09-20 04:32:20 +0200 | [diff] [blame] | 712 | tcon->ses->chan_max); |
| 713 | |
Samuel Cabrero | 0ac4e29 | 2020-12-11 22:59:29 -0600 | [diff] [blame] | 714 | if (tcon->use_witness) |
| 715 | seq_puts(s, ",witness"); |
Samuel Cabrero | 0ac4e29 | 2020-12-11 22:59:29 -0600 | [diff] [blame] | 716 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | return 0; |
| 718 | } |
| 719 | |
Al Viro | 42faad9 | 2008-04-24 07:21:56 -0400 | [diff] [blame] | 720 | static void cifs_umount_begin(struct super_block *sb) |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 721 | { |
Al Viro | 42faad9 | 2008-04-24 07:21:56 -0400 | [diff] [blame] | 722 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 723 | struct cifs_tcon *tcon; |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 724 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 725 | if (cifs_sb == NULL) |
Steve French | 9e2e85f | 2005-10-10 14:28:38 -0700 | [diff] [blame] | 726 | return; |
| 727 | |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 728 | tcon = cifs_sb_master_tcon(cifs_sb); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 729 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 730 | spin_lock(&cifs_tcp_ses_lock); |
Shyam Prasad N | d7d7a66 | 2022-07-27 14:49:56 -0500 | [diff] [blame] | 731 | spin_lock(&tcon->tc_lock); |
Steve French | fdf59eb | 2022-03-27 16:07:30 -0500 | [diff] [blame] | 732 | if ((tcon->tc_count > 1) || (tcon->status == TID_EXITING)) { |
Steve French | ad8034f | 2009-06-26 03:25:49 +0000 | [diff] [blame] | 733 | /* we have other mounts to same share or we have |
Steve French | 491eafc | 2023-03-23 16:20:02 -0500 | [diff] [blame] | 734 | already tried to umount this and woken up |
Steve French | ad8034f | 2009-06-26 03:25:49 +0000 | [diff] [blame] | 735 | all waiting network requests, nothing to do */ |
Shyam Prasad N | d7d7a66 | 2022-07-27 14:49:56 -0500 | [diff] [blame] | 736 | spin_unlock(&tcon->tc_lock); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 737 | spin_unlock(&cifs_tcp_ses_lock); |
Steve French | ad8034f | 2009-06-26 03:25:49 +0000 | [diff] [blame] | 738 | return; |
Steve French | 491eafc | 2023-03-23 16:20:02 -0500 | [diff] [blame] | 739 | } |
| 740 | /* |
| 741 | * can not set tcon->status to TID_EXITING yet since we don't know if umount -f will |
| 742 | * fail later (e.g. due to open files). TID_EXITING will be set just before tdis req sent |
| 743 | */ |
Shyam Prasad N | d7d7a66 | 2022-07-27 14:49:56 -0500 | [diff] [blame] | 744 | spin_unlock(&tcon->tc_lock); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 745 | spin_unlock(&cifs_tcp_ses_lock); |
Steve French | 5e1253b | 2005-10-10 14:06:37 -0700 | [diff] [blame] | 746 | |
Steve French | 3a5ff61 | 2006-07-14 22:37:11 +0000 | [diff] [blame] | 747 | /* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */ |
Steve French | 7b7abfe | 2005-11-09 15:21:09 -0800 | [diff] [blame] | 748 | /* cancel_notify_requests(tcon); */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 749 | if (tcon->ses && tcon->ses->server) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 750 | cifs_dbg(FYI, "wake up tasks now - umount begin not complete\n"); |
Steve French | 9e2e85f | 2005-10-10 14:28:38 -0700 | [diff] [blame] | 751 | wake_up_all(&tcon->ses->server->request_q); |
Steve French | 6ab16d2 | 2005-11-29 20:55:11 -0800 | [diff] [blame] | 752 | wake_up_all(&tcon->ses->server->response_q); |
| 753 | msleep(1); /* yield */ |
| 754 | /* we have to kick the requests once more */ |
| 755 | wake_up_all(&tcon->ses->server->response_q); |
| 756 | msleep(1); |
Steve French | 5e1253b | 2005-10-10 14:06:37 -0700 | [diff] [blame] | 757 | } |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 758 | |
| 759 | return; |
| 760 | } |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 761 | |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 762 | #ifdef CONFIG_CIFS_STATS2 |
Al Viro | 6413237 | 2011-12-08 20:51:13 -0500 | [diff] [blame] | 763 | static int cifs_show_stats(struct seq_file *s, struct dentry *root) |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 764 | { |
| 765 | /* BB FIXME */ |
| 766 | return 0; |
| 767 | } |
| 768 | #endif |
| 769 | |
David Howells | 70431bf | 2020-11-17 15:56:59 +0000 | [diff] [blame] | 770 | static int cifs_write_inode(struct inode *inode, struct writeback_control *wbc) |
| 771 | { |
| 772 | fscache_unpin_writeback(wbc, cifs_inode_cookie(inode)); |
| 773 | return 0; |
| 774 | } |
| 775 | |
Al Viro | 45321ac | 2010-06-07 13:43:19 -0400 | [diff] [blame] | 776 | static int cifs_drop_inode(struct inode *inode) |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 777 | { |
| 778 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
| 779 | |
Al Viro | 45321ac | 2010-06-07 13:43:19 -0400 | [diff] [blame] | 780 | /* no serverino => unconditional eviction */ |
| 781 | return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) || |
| 782 | generic_drop_inode(inode); |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 783 | } |
| 784 | |
Josef 'Jeff' Sipek | ee9b6d6 | 2007-02-12 00:55:41 -0800 | [diff] [blame] | 785 | static const struct super_operations cifs_super_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | .statfs = cifs_statfs, |
| 787 | .alloc_inode = cifs_alloc_inode, |
David Howells | 70431bf | 2020-11-17 15:56:59 +0000 | [diff] [blame] | 788 | .write_inode = cifs_write_inode, |
Al Viro | c2e6802 | 2019-04-14 23:18:35 -0400 | [diff] [blame] | 789 | .free_inode = cifs_free_inode, |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 790 | .drop_inode = cifs_drop_inode, |
Al Viro | b57922d | 2010-06-07 14:34:48 -0400 | [diff] [blame] | 791 | .evict_inode = cifs_evict_inode, |
Steve French | 653a5ef | 2020-12-14 20:08:10 -0600 | [diff] [blame] | 792 | /* .show_path = cifs_show_path, */ /* Would we ever need show path? */ |
| 793 | .show_devname = cifs_show_devname, |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 794 | /* .delete_inode = cifs_delete_inode, */ /* Do not need above |
| 795 | function unless later we add lazy close of inodes or unless the |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 796 | kernel forgets to call us with the same number of releases (closes) |
| 797 | as opens */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | .show_options = cifs_show_options, |
Steve French | 7b7abfe | 2005-11-09 15:21:09 -0800 | [diff] [blame] | 799 | .umount_begin = cifs_umount_begin, |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 800 | #ifdef CONFIG_CIFS_STATS2 |
Steve French | f46d3e1 | 2006-09-30 01:08:55 +0000 | [diff] [blame] | 801 | .show_stats = cifs_show_stats, |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 802 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | }; |
| 804 | |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 805 | /* |
| 806 | * Get root dentry from superblock according to prefix path mount option. |
| 807 | * Return dentry with refcount + 1 on success and NULL otherwise. |
| 808 | */ |
| 809 | static struct dentry * |
Ronnie Sahlberg | 3fa1c6d | 2020-12-09 23:07:12 -0600 | [diff] [blame] | 810 | cifs_get_root(struct smb3_fs_context *ctx, struct super_block *sb) |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 811 | { |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 812 | struct dentry *dentry; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 813 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 814 | char *full_path = NULL; |
| 815 | char *s, *p; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 816 | char sep; |
| 817 | |
Sachin Prabhu | 348c1bf | 2016-07-29 22:38:21 +0100 | [diff] [blame] | 818 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) |
| 819 | return dget(sb->s_root); |
| 820 | |
Ronnie Sahlberg | 3fa1c6d | 2020-12-09 23:07:12 -0600 | [diff] [blame] | 821 | full_path = cifs_build_path_to_root(ctx, cifs_sb, |
Sachin Prabhu | 374402a | 2016-12-15 12:31:19 +0530 | [diff] [blame] | 822 | cifs_sb_master_tcon(cifs_sb), 0); |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 823 | if (full_path == NULL) |
Al Viro | 9403c9c | 2011-06-17 10:02:59 -0400 | [diff] [blame] | 824 | return ERR_PTR(-ENOMEM); |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 825 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 826 | cifs_dbg(FYI, "Get root dentry for %s\n", full_path); |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 827 | |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 828 | sep = CIFS_DIR_SEP(cifs_sb); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 829 | dentry = dget(sb->s_root); |
Colin Ian King | 0b66fa7 | 2021-12-21 00:48:09 +0000 | [diff] [blame] | 830 | s = full_path; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 831 | |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 832 | do { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 833 | struct inode *dir = d_inode(dentry); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 834 | struct dentry *child; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 835 | |
Jeff Layton | ce2ac52 | 2013-02-01 15:11:01 -0500 | [diff] [blame] | 836 | if (!S_ISDIR(dir->i_mode)) { |
| 837 | dput(dentry); |
| 838 | dentry = ERR_PTR(-ENOTDIR); |
| 839 | break; |
| 840 | } |
Pavel Shilovsky | 5b980b0 | 2011-08-21 19:30:15 +0400 | [diff] [blame] | 841 | |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 842 | /* skip separators */ |
| 843 | while (*s == sep) |
| 844 | s++; |
| 845 | if (!*s) |
| 846 | break; |
| 847 | p = s++; |
| 848 | /* next separator */ |
| 849 | while (*s && *s != sep) |
| 850 | s++; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 851 | |
Al Viro | 6c2d4798 | 2019-10-31 01:21:58 -0400 | [diff] [blame] | 852 | child = lookup_positive_unlocked(p, dentry, s - p); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 853 | dput(dentry); |
| 854 | dentry = child; |
| 855 | } while (!IS_ERR(dentry)); |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 856 | kfree(full_path); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 857 | return dentry; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 858 | } |
| 859 | |
Al Viro | ee01a14 | 2011-06-17 09:47:23 -0400 | [diff] [blame] | 860 | static int cifs_set_super(struct super_block *sb, void *data) |
| 861 | { |
| 862 | struct cifs_mnt_data *mnt_data = data; |
| 863 | sb->s_fs_info = mnt_data->cifs_sb; |
| 864 | return set_anon_super(sb, NULL); |
| 865 | } |
| 866 | |
Ronnie Sahlberg | 24e0a1e | 2020-12-10 00:06:02 -0600 | [diff] [blame] | 867 | struct dentry * |
Steve French | c7c137b | 2018-06-06 17:59:29 -0500 | [diff] [blame] | 868 | cifs_smb3_do_mount(struct file_system_type *fs_type, |
Ronnie Sahlberg | 24e0a1e | 2020-12-10 00:06:02 -0600 | [diff] [blame] | 869 | int flags, struct smb3_fs_context *old_ctx) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | { |
| 871 | int rc; |
Ronnie Sahlberg | 8378a51 | 2022-05-31 13:01:17 +1000 | [diff] [blame] | 872 | struct super_block *sb = NULL; |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 873 | struct cifs_sb_info *cifs_sb = NULL; |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 874 | struct cifs_mnt_data mnt_data; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 875 | struct dentry *root; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | |
Steve French | 8c1beb9 | 2018-10-07 13:52:18 -0500 | [diff] [blame] | 877 | /* |
| 878 | * Prints in Kernel / CIFS log the attempted mount operation |
| 879 | * If CIFS_DEBUG && cifs_FYI |
| 880 | */ |
Rodrigo Freire | f80eaed | 2018-10-07 12:21:26 -0300 | [diff] [blame] | 881 | if (cifsFYI) |
Ronnie Sahlberg | 24e0a1e | 2020-12-10 00:06:02 -0600 | [diff] [blame] | 882 | cifs_dbg(FYI, "Devname: %s flags: %d\n", old_ctx->UNC, flags); |
Rodrigo Freire | f80eaed | 2018-10-07 12:21:26 -0300 | [diff] [blame] | 883 | else |
Ronnie Sahlberg | 24e0a1e | 2020-12-10 00:06:02 -0600 | [diff] [blame] | 884 | cifs_info("Attempting to mount %s\n", old_ctx->UNC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 886 | cifs_sb = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL); |
| 887 | if (cifs_sb == NULL) { |
| 888 | root = ERR_PTR(-ENOMEM); |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 889 | goto out; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 890 | } |
| 891 | |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 892 | cifs_sb->ctx = kzalloc(sizeof(struct smb3_fs_context), GFP_KERNEL); |
| 893 | if (!cifs_sb->ctx) { |
Al Viro | 5d3bc60 | 2011-06-17 09:17:28 -0400 | [diff] [blame] | 894 | root = ERR_PTR(-ENOMEM); |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 895 | goto out; |
Al Viro | 5d3bc60 | 2011-06-17 09:17:28 -0400 | [diff] [blame] | 896 | } |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 897 | rc = smb3_fs_context_dup(cifs_sb->ctx, old_ctx); |
Sachin Prabhu | 4214ebf | 2016-07-29 22:38:19 +0100 | [diff] [blame] | 898 | if (rc) { |
| 899 | root = ERR_PTR(rc); |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 900 | goto out; |
Aurelien Aptel | a6b5058 | 2016-05-25 19:59:09 +0200 | [diff] [blame] | 901 | } |
| 902 | |
Ronnie Sahlberg | 51acd20 | 2020-12-14 16:40:24 +1000 | [diff] [blame] | 903 | rc = cifs_setup_cifs_sb(cifs_sb); |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 904 | if (rc) { |
| 905 | root = ERR_PTR(rc); |
| 906 | goto out; |
| 907 | } |
| 908 | |
| 909 | rc = cifs_mount(cifs_sb, cifs_sb->ctx); |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 910 | if (rc) { |
Linus Torvalds | 1751e8a | 2017-11-27 13:05:09 -0800 | [diff] [blame] | 911 | if (!(flags & SB_SILENT)) |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 912 | cifs_dbg(VFS, "cifs_mount failed w/return code = %d\n", |
| 913 | rc); |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 914 | root = ERR_PTR(rc); |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 915 | goto out; |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 916 | } |
| 917 | |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 918 | mnt_data.ctx = cifs_sb->ctx; |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 919 | mnt_data.cifs_sb = cifs_sb; |
| 920 | mnt_data.flags = flags; |
| 921 | |
David Howells | 9249e17 | 2012-06-25 12:55:37 +0100 | [diff] [blame] | 922 | /* BB should we make this contingent on mount parm? */ |
Linus Torvalds | 1751e8a | 2017-11-27 13:05:09 -0800 | [diff] [blame] | 923 | flags |= SB_NODIRATIME | SB_NOATIME; |
David Howells | 9249e17 | 2012-06-25 12:55:37 +0100 | [diff] [blame] | 924 | |
| 925 | sb = sget(fs_type, cifs_match_super, cifs_set_super, flags, &mnt_data); |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 926 | if (IS_ERR(sb)) { |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 927 | root = ERR_CAST(sb); |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 928 | cifs_umount(cifs_sb); |
Ronnie Sahlberg | 6cf5abb | 2020-12-16 08:51:33 +1000 | [diff] [blame] | 929 | cifs_sb = NULL; |
Al Viro | d757d71 | 2011-06-17 09:42:43 -0400 | [diff] [blame] | 930 | goto out; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 931 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | |
Al Viro | ee01a14 | 2011-06-17 09:47:23 -0400 | [diff] [blame] | 933 | if (sb->s_root) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 934 | cifs_dbg(FYI, "Use existing superblock\n"); |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 935 | cifs_umount(cifs_sb); |
Ronnie Sahlberg | 6cf5abb | 2020-12-16 08:51:33 +1000 | [diff] [blame] | 936 | cifs_sb = NULL; |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 937 | } else { |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 938 | rc = cifs_read_super(sb); |
| 939 | if (rc) { |
| 940 | root = ERR_PTR(rc); |
| 941 | goto out_super; |
| 942 | } |
| 943 | |
Linus Torvalds | 1751e8a | 2017-11-27 13:05:09 -0800 | [diff] [blame] | 944 | sb->s_flags |= SB_ACTIVE; |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 945 | } |
| 946 | |
Ronnie Sahlberg | 6cf5abb | 2020-12-16 08:51:33 +1000 | [diff] [blame] | 947 | root = cifs_get_root(cifs_sb ? cifs_sb->ctx : old_ctx, sb); |
Al Viro | 9403c9c | 2011-06-17 10:02:59 -0400 | [diff] [blame] | 948 | if (IS_ERR(root)) |
Al Viro | fa18f1b | 2011-06-17 09:50:44 -0400 | [diff] [blame] | 949 | goto out_super; |
Al Viro | fa18f1b | 2011-06-17 09:50:44 -0400 | [diff] [blame] | 950 | |
Ronnie Sahlberg | 269f67e | 2021-03-09 09:07:30 +1000 | [diff] [blame] | 951 | if (cifs_sb) |
| 952 | cifs_sb->root = dget(root); |
| 953 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 954 | cifs_dbg(FYI, "dentry root is: %p\n", root); |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 955 | return root; |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 956 | |
Pavel Shilovsky | 641a58d | 2011-05-26 00:02:16 +0400 | [diff] [blame] | 957 | out_super: |
Pavel Shilovsky | 641a58d | 2011-05-26 00:02:16 +0400 | [diff] [blame] | 958 | deactivate_locked_super(sb); |
Ronnie Sahlberg | 3d6cc98 | 2022-02-11 02:59:15 +1000 | [diff] [blame] | 959 | return root; |
Pavel Shilovsky | 641a58d | 2011-05-26 00:02:16 +0400 | [diff] [blame] | 960 | out: |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 961 | if (cifs_sb) { |
Ronnie Sahlberg | 8378a51 | 2022-05-31 13:01:17 +1000 | [diff] [blame] | 962 | if (!sb || IS_ERR(sb)) { /* otherwise kill_sb will handle */ |
| 963 | kfree(cifs_sb->prepath); |
| 964 | smb3_cleanup_fs_context(cifs_sb->ctx); |
| 965 | kfree(cifs_sb); |
| 966 | } |
Ronnie Sahlberg | d17abdf7 | 2020-11-10 08:59:26 +1000 | [diff] [blame] | 967 | } |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 968 | return root; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | } |
| 970 | |
Steve French | c7c137b | 2018-06-06 17:59:29 -0500 | [diff] [blame] | 971 | |
Jeff Layton | 08bc035 | 2014-05-23 06:50:21 -0400 | [diff] [blame] | 972 | static ssize_t |
| 973 | cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter) |
| 974 | { |
| 975 | ssize_t rc; |
| 976 | struct inode *inode = file_inode(iocb->ki_filp); |
| 977 | |
David Howells | 994fd53 | 2022-04-07 00:03:14 +0100 | [diff] [blame] | 978 | if (iocb->ki_flags & IOCB_DIRECT) |
Ross Lagerwall | 882137c | 2015-12-02 14:46:07 +0000 | [diff] [blame] | 979 | return cifs_user_readv(iocb, iter); |
| 980 | |
Jeff Layton | 08bc035 | 2014-05-23 06:50:21 -0400 | [diff] [blame] | 981 | rc = cifs_revalidate_mapping(inode); |
| 982 | if (rc) |
| 983 | return rc; |
| 984 | |
| 985 | return generic_file_read_iter(iocb, iter); |
| 986 | } |
| 987 | |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 988 | static ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 989 | { |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 990 | struct inode *inode = file_inode(iocb->ki_filp); |
Sachin Prabhu | c11f1df | 2014-03-11 16:11:47 +0000 | [diff] [blame] | 991 | struct cifsInodeInfo *cinode = CIFS_I(inode); |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 992 | ssize_t written; |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 993 | int rc; |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 994 | |
Ross Lagerwall | 882137c | 2015-12-02 14:46:07 +0000 | [diff] [blame] | 995 | if (iocb->ki_filp->f_flags & O_DIRECT) { |
| 996 | written = cifs_user_writev(iocb, from); |
| 997 | if (written > 0 && CIFS_CACHE_READ(cinode)) { |
| 998 | cifs_zap_mapping(inode); |
| 999 | cifs_dbg(FYI, |
| 1000 | "Set no oplock for inode=%p after a write operation\n", |
| 1001 | inode); |
| 1002 | cinode->oplock = 0; |
| 1003 | } |
| 1004 | return written; |
| 1005 | } |
| 1006 | |
Sachin Prabhu | c11f1df | 2014-03-11 16:11:47 +0000 | [diff] [blame] | 1007 | written = cifs_get_writer(cinode); |
| 1008 | if (written) |
| 1009 | return written; |
| 1010 | |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 1011 | written = generic_file_write_iter(iocb, from); |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 1012 | |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 1013 | if (CIFS_CACHE_WRITE(CIFS_I(inode))) |
Sachin Prabhu | c11f1df | 2014-03-11 16:11:47 +0000 | [diff] [blame] | 1014 | goto out; |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 1015 | |
| 1016 | rc = filemap_fdatawrite(inode->i_mapping); |
| 1017 | if (rc) |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 1018 | cifs_dbg(FYI, "cifs_file_write_iter: %d rc on %p inode\n", |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1019 | rc, inode); |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 1020 | |
Sachin Prabhu | c11f1df | 2014-03-11 16:11:47 +0000 | [diff] [blame] | 1021 | out: |
| 1022 | cifs_put_writer(cinode); |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 1023 | return written; |
| 1024 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | |
Andrew Morton | 965c8e5 | 2012-12-17 15:59:39 -0800 | [diff] [blame] | 1026 | static loff_t cifs_llseek(struct file *file, loff_t offset, int whence) |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 1027 | { |
Ronnie Sahlberg | dece44e | 2019-05-15 07:17:02 +1000 | [diff] [blame] | 1028 | struct cifsFileInfo *cfile = file->private_data; |
| 1029 | struct cifs_tcon *tcon; |
| 1030 | |
Josef Bacik | 06222e4 | 2011-07-18 13:21:38 -0400 | [diff] [blame] | 1031 | /* |
Andrew Morton | 965c8e5 | 2012-12-17 15:59:39 -0800 | [diff] [blame] | 1032 | * whence == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate |
Josef Bacik | 06222e4 | 2011-07-18 13:21:38 -0400 | [diff] [blame] | 1033 | * the cached file length |
| 1034 | */ |
Andrew Morton | 965c8e5 | 2012-12-17 15:59:39 -0800 | [diff] [blame] | 1035 | if (whence != SEEK_SET && whence != SEEK_CUR) { |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1036 | int rc; |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 1037 | struct inode *inode = file_inode(file); |
Steve French | 030e9d8 | 2007-02-01 04:27:59 +0000 | [diff] [blame] | 1038 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1039 | /* |
| 1040 | * We need to be sure that all dirty pages are written and the |
| 1041 | * server has the newest file length. |
| 1042 | */ |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 1043 | if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping && |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1044 | inode->i_mapping->nrpages != 0) { |
| 1045 | rc = filemap_fdatawait(inode->i_mapping); |
Steve French | 156ecb2 | 2011-05-20 17:00:01 +0000 | [diff] [blame] | 1046 | if (rc) { |
| 1047 | mapping_set_error(inode->i_mapping, rc); |
| 1048 | return rc; |
| 1049 | } |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1050 | } |
| 1051 | /* |
| 1052 | * Some applications poll for the file length in this strange |
| 1053 | * way so we must seek to end on non-oplocked files by |
| 1054 | * setting the revalidate time to zero. |
| 1055 | */ |
| 1056 | CIFS_I(inode)->time = 0; |
Steve French | 030e9d8 | 2007-02-01 04:27:59 +0000 | [diff] [blame] | 1057 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1058 | rc = cifs_revalidate_file_attr(file); |
| 1059 | if (rc < 0) |
| 1060 | return (loff_t)rc; |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 1061 | } |
Ronnie Sahlberg | dece44e | 2019-05-15 07:17:02 +1000 | [diff] [blame] | 1062 | if (cfile && cfile->tlink) { |
| 1063 | tcon = tlink_tcon(cfile->tlink); |
| 1064 | if (tcon->ses->server->ops->llseek) |
| 1065 | return tcon->ses->server->ops->llseek(file, tcon, |
| 1066 | offset, whence); |
| 1067 | } |
Andrew Morton | 965c8e5 | 2012-12-17 15:59:39 -0800 | [diff] [blame] | 1068 | return generic_file_llseek(file, offset, whence); |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 1069 | } |
| 1070 | |
Jeff Layton | e6f5c78 | 2014-08-22 10:40:25 -0400 | [diff] [blame] | 1071 | static int |
| 1072 | cifs_setlease(struct file *file, long arg, struct file_lock **lease, void **priv) |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1073 | { |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 1074 | /* |
| 1075 | * Note that this is called by vfs setlease with i_lock held to |
| 1076 | * protect *lease from going away. |
| 1077 | */ |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 1078 | struct inode *inode = file_inode(file); |
Jeff Layton | ba00ba64 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 1079 | struct cifsFileInfo *cfile = file->private_data; |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1080 | |
| 1081 | if (!(S_ISREG(inode->i_mode))) |
| 1082 | return -EINVAL; |
| 1083 | |
Jeff Layton | 0244080 | 2014-08-09 10:16:44 -0400 | [diff] [blame] | 1084 | /* Check if file is oplocked if this is request for new lease */ |
| 1085 | if (arg == F_UNLCK || |
| 1086 | ((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) || |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 1087 | ((arg == F_WRLCK) && CIFS_CACHE_WRITE(CIFS_I(inode)))) |
Jeff Layton | e6f5c78 | 2014-08-22 10:40:25 -0400 | [diff] [blame] | 1088 | return generic_setlease(file, arg, lease, priv); |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1089 | else if (tlink_tcon(cfile->tlink)->local_lease && |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 1090 | !CIFS_CACHE_READ(CIFS_I(inode))) |
| 1091 | /* |
| 1092 | * If the server claims to support oplock on this file, then we |
| 1093 | * still need to check oplock even if the local_lease mount |
| 1094 | * option is set, but there are servers which do not support |
| 1095 | * oplock for which this mount option may be useful if the user |
| 1096 | * knows that the file won't be changed on the server by anyone |
| 1097 | * else. |
| 1098 | */ |
Jeff Layton | e6f5c78 | 2014-08-22 10:40:25 -0400 | [diff] [blame] | 1099 | return generic_setlease(file, arg, lease, priv); |
Christoph Hellwig | 51ee4b8 | 2010-10-31 08:35:10 -0400 | [diff] [blame] | 1100 | else |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1101 | return -EAGAIN; |
| 1102 | } |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1103 | |
Igor Mammedov | e6ab158 | 2008-01-11 01:49:48 +0000 | [diff] [blame] | 1104 | struct file_system_type cifs_fs_type = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | .owner = THIS_MODULE, |
| 1106 | .name = "cifs", |
Ronnie Sahlberg | 24e0a1e | 2020-12-10 00:06:02 -0600 | [diff] [blame] | 1107 | .init_fs_context = smb3_init_fs_context, |
| 1108 | .parameters = smb3_fs_parameters, |
Al Viro | 6d68617 | 2011-06-17 08:34:57 -0400 | [diff] [blame] | 1109 | .kill_sb = cifs_kill_sb, |
Steve French | c7e9f78 | 2020-02-25 18:08:54 -0600 | [diff] [blame] | 1110 | .fs_flags = FS_RENAME_DOES_D_MOVE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | }; |
Eric W. Biederman | 3e64fe5 | 2013-03-11 07:05:42 -0700 | [diff] [blame] | 1112 | MODULE_ALIAS_FS("cifs"); |
Steve French | 49218b4 | 2018-05-23 21:44:53 -0500 | [diff] [blame] | 1113 | |
Paulo Alcantara | c36ee7d | 2022-06-05 19:54:26 -0300 | [diff] [blame] | 1114 | struct file_system_type smb3_fs_type = { |
Steve French | 49218b4 | 2018-05-23 21:44:53 -0500 | [diff] [blame] | 1115 | .owner = THIS_MODULE, |
| 1116 | .name = "smb3", |
Ronnie Sahlberg | 24e0a1e | 2020-12-10 00:06:02 -0600 | [diff] [blame] | 1117 | .init_fs_context = smb3_init_fs_context, |
| 1118 | .parameters = smb3_fs_parameters, |
Steve French | 49218b4 | 2018-05-23 21:44:53 -0500 | [diff] [blame] | 1119 | .kill_sb = cifs_kill_sb, |
Steve French | c7e9f78 | 2020-02-25 18:08:54 -0600 | [diff] [blame] | 1120 | .fs_flags = FS_RENAME_DOES_D_MOVE, |
Steve French | 49218b4 | 2018-05-23 21:44:53 -0500 | [diff] [blame] | 1121 | }; |
| 1122 | MODULE_ALIAS_FS("smb3"); |
| 1123 | MODULE_ALIAS("smb3"); |
| 1124 | |
Arjan van de Ven | 754661f | 2007-02-12 00:55:38 -0800 | [diff] [blame] | 1125 | const struct inode_operations cifs_dir_inode_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | .create = cifs_create, |
Miklos Szeredi | d2c1271 | 2012-06-05 15:10:23 +0200 | [diff] [blame] | 1127 | .atomic_open = cifs_atomic_open, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | .lookup = cifs_lookup, |
| 1129 | .getattr = cifs_getattr, |
| 1130 | .unlink = cifs_unlink, |
| 1131 | .link = cifs_hardlink, |
| 1132 | .mkdir = cifs_mkdir, |
| 1133 | .rmdir = cifs_rmdir, |
Miklos Szeredi | 2773bf0 | 2016-09-27 11:03:58 +0200 | [diff] [blame] | 1134 | .rename = cifs_rename2, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | .permission = cifs_permission, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | .setattr = cifs_setattr, |
| 1137 | .symlink = cifs_symlink, |
| 1138 | .mknod = cifs_mknod, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | .listxattr = cifs_listxattr, |
Christian Brauner | bd9684b | 2022-09-22 17:17:02 +0200 | [diff] [blame] | 1140 | .get_acl = cifs_get_acl, |
Christian Brauner | dc1af4c | 2022-09-22 17:17:03 +0200 | [diff] [blame] | 1141 | .set_acl = cifs_set_acl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | }; |
| 1143 | |
Arjan van de Ven | 754661f | 2007-02-12 00:55:38 -0800 | [diff] [blame] | 1144 | const struct inode_operations cifs_file_inode_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | .setattr = cifs_setattr, |
Steve French | 48a77aa | 2016-05-18 20:48:32 -0500 | [diff] [blame] | 1146 | .getattr = cifs_getattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | .permission = cifs_permission, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | .listxattr = cifs_listxattr, |
Ronnie Sahlberg | 2f3ebab | 2019-04-25 16:45:29 +1000 | [diff] [blame] | 1149 | .fiemap = cifs_fiemap, |
Christian Brauner | bd9684b | 2022-09-22 17:17:02 +0200 | [diff] [blame] | 1150 | .get_acl = cifs_get_acl, |
Christian Brauner | dc1af4c | 2022-09-22 17:17:03 +0200 | [diff] [blame] | 1151 | .set_acl = cifs_set_acl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | }; |
| 1153 | |
ChenXiaoSong | 542228d | 2022-11-04 15:44:41 +0800 | [diff] [blame] | 1154 | const char *cifs_get_link(struct dentry *dentry, struct inode *inode, |
| 1155 | struct delayed_call *done) |
| 1156 | { |
| 1157 | char *target_path; |
| 1158 | |
| 1159 | target_path = kmalloc(PATH_MAX, GFP_KERNEL); |
| 1160 | if (!target_path) |
| 1161 | return ERR_PTR(-ENOMEM); |
| 1162 | |
| 1163 | spin_lock(&inode->i_lock); |
| 1164 | if (likely(CIFS_I(inode)->symlink_target)) { |
| 1165 | strscpy(target_path, CIFS_I(inode)->symlink_target, PATH_MAX); |
| 1166 | } else { |
| 1167 | kfree(target_path); |
| 1168 | target_path = ERR_PTR(-EOPNOTSUPP); |
| 1169 | } |
| 1170 | spin_unlock(&inode->i_lock); |
| 1171 | |
| 1172 | if (!IS_ERR(target_path)) |
| 1173 | set_delayed_call(done, kfree_link, target_path); |
| 1174 | |
| 1175 | return target_path; |
| 1176 | } |
| 1177 | |
Arjan van de Ven | 754661f | 2007-02-12 00:55:38 -0800 | [diff] [blame] | 1178 | const struct inode_operations cifs_symlink_inode_ops = { |
ChenXiaoSong | 542228d | 2022-11-04 15:44:41 +0800 | [diff] [blame] | 1179 | .get_link = cifs_get_link, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | .permission = cifs_permission, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | .listxattr = cifs_listxattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | }; |
| 1183 | |
Darrick J. Wong | 42ec3d4 | 2018-10-30 10:41:49 +1100 | [diff] [blame] | 1184 | static loff_t cifs_remap_file_range(struct file *src_file, loff_t off, |
| 1185 | struct file *dst_file, loff_t destoff, loff_t len, |
Darrick J. Wong | 2e5dfc9 | 2018-10-30 10:41:21 +1100 | [diff] [blame] | 1186 | unsigned int remap_flags) |
Christoph Hellwig | 04b38d6 | 2015-12-03 12:59:50 +0100 | [diff] [blame] | 1187 | { |
| 1188 | struct inode *src_inode = file_inode(src_file); |
| 1189 | struct inode *target_inode = file_inode(dst_file); |
| 1190 | struct cifsFileInfo *smb_file_src = src_file->private_data; |
Colin Ian King | 8c6c9bed8 | 2018-11-01 13:14:30 +0000 | [diff] [blame] | 1191 | struct cifsFileInfo *smb_file_target; |
| 1192 | struct cifs_tcon *target_tcon; |
Christoph Hellwig | 04b38d6 | 2015-12-03 12:59:50 +0100 | [diff] [blame] | 1193 | unsigned int xid; |
| 1194 | int rc; |
| 1195 | |
Xiaoli Feng | b073a08 | 2019-03-16 12:11:54 +0800 | [diff] [blame] | 1196 | if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY)) |
Darrick J. Wong | 2e5dfc9 | 2018-10-30 10:41:21 +1100 | [diff] [blame] | 1197 | return -EINVAL; |
| 1198 | |
Christoph Hellwig | 04b38d6 | 2015-12-03 12:59:50 +0100 | [diff] [blame] | 1199 | cifs_dbg(FYI, "clone range\n"); |
| 1200 | |
| 1201 | xid = get_xid(); |
| 1202 | |
| 1203 | if (!src_file->private_data || !dst_file->private_data) { |
| 1204 | rc = -EBADF; |
| 1205 | cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n"); |
| 1206 | goto out; |
| 1207 | } |
| 1208 | |
Colin Ian King | 8c6c9bed8 | 2018-11-01 13:14:30 +0000 | [diff] [blame] | 1209 | smb_file_target = dst_file->private_data; |
| 1210 | target_tcon = tlink_tcon(smb_file_target->tlink); |
| 1211 | |
Christoph Hellwig | 04b38d6 | 2015-12-03 12:59:50 +0100 | [diff] [blame] | 1212 | /* |
| 1213 | * Note: cifs case is easier than btrfs since server responsible for |
| 1214 | * checks for proper open modes and file type and if it wants |
| 1215 | * server could even support copy of range where source = target |
| 1216 | */ |
| 1217 | lock_two_nondirectories(target_inode, src_inode); |
| 1218 | |
| 1219 | if (len == 0) |
| 1220 | len = src_inode->i_size - off; |
| 1221 | |
| 1222 | cifs_dbg(FYI, "about to flush pages\n"); |
| 1223 | /* should we flush first and last page first */ |
| 1224 | truncate_inode_pages_range(&target_inode->i_data, destoff, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1225 | PAGE_ALIGN(destoff + len)-1); |
Christoph Hellwig | 04b38d6 | 2015-12-03 12:59:50 +0100 | [diff] [blame] | 1226 | |
| 1227 | if (target_tcon->ses->server->ops->duplicate_extents) |
| 1228 | rc = target_tcon->ses->server->ops->duplicate_extents(xid, |
| 1229 | smb_file_src, smb_file_target, off, len, destoff); |
| 1230 | else |
| 1231 | rc = -EOPNOTSUPP; |
| 1232 | |
| 1233 | /* force revalidate of size and timestamps of target file now |
| 1234 | that target is updated on the server */ |
| 1235 | CIFS_I(target_inode)->time = 0; |
Christoph Hellwig | 04b38d6 | 2015-12-03 12:59:50 +0100 | [diff] [blame] | 1236 | /* although unlocking in the reverse order from locking is not |
| 1237 | strictly necessary here it is a little cleaner to be consistent */ |
| 1238 | unlock_two_nondirectories(src_inode, target_inode); |
| 1239 | out: |
| 1240 | free_xid(xid); |
Darrick J. Wong | 42ec3d4 | 2018-10-30 10:41:49 +1100 | [diff] [blame] | 1241 | return rc < 0 ? rc : len; |
Christoph Hellwig | 04b38d6 | 2015-12-03 12:59:50 +0100 | [diff] [blame] | 1242 | } |
| 1243 | |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1244 | ssize_t cifs_file_copychunk_range(unsigned int xid, |
| 1245 | struct file *src_file, loff_t off, |
| 1246 | struct file *dst_file, loff_t destoff, |
| 1247 | size_t len, unsigned int flags) |
| 1248 | { |
| 1249 | struct inode *src_inode = file_inode(src_file); |
| 1250 | struct inode *target_inode = file_inode(dst_file); |
| 1251 | struct cifsFileInfo *smb_file_src; |
| 1252 | struct cifsFileInfo *smb_file_target; |
| 1253 | struct cifs_tcon *src_tcon; |
| 1254 | struct cifs_tcon *target_tcon; |
| 1255 | ssize_t rc; |
| 1256 | |
| 1257 | cifs_dbg(FYI, "copychunk range\n"); |
| 1258 | |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1259 | if (!src_file->private_data || !dst_file->private_data) { |
| 1260 | rc = -EBADF; |
| 1261 | cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n"); |
| 1262 | goto out; |
| 1263 | } |
| 1264 | |
| 1265 | rc = -EXDEV; |
| 1266 | smb_file_target = dst_file->private_data; |
| 1267 | smb_file_src = src_file->private_data; |
| 1268 | src_tcon = tlink_tcon(smb_file_src->tlink); |
| 1269 | target_tcon = tlink_tcon(smb_file_target->tlink); |
| 1270 | |
| 1271 | if (src_tcon->ses != target_tcon->ses) { |
| 1272 | cifs_dbg(VFS, "source and target of copy not on same server\n"); |
| 1273 | goto out; |
| 1274 | } |
| 1275 | |
Amir Goldstein | bf3c90e | 2019-06-10 20:36:57 +0300 | [diff] [blame] | 1276 | rc = -EOPNOTSUPP; |
| 1277 | if (!target_tcon->ses->server->ops->copychunk_range) |
| 1278 | goto out; |
| 1279 | |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1280 | /* |
| 1281 | * Note: cifs case is easier than btrfs since server responsible for |
| 1282 | * checks for proper open modes and file type and if it wants |
| 1283 | * server could even support copy of range where source = target |
| 1284 | */ |
| 1285 | lock_two_nondirectories(target_inode, src_inode); |
| 1286 | |
| 1287 | cifs_dbg(FYI, "about to flush pages\n"); |
Steve French | 3e3761f | 2022-08-29 11:53:41 -0500 | [diff] [blame] | 1288 | |
| 1289 | rc = filemap_write_and_wait_range(src_inode->i_mapping, off, |
| 1290 | off + len - 1); |
| 1291 | if (rc) |
ChenXiaoSong | 5024878 | 2022-11-19 12:51:59 +0800 | [diff] [blame] | 1292 | goto unlock; |
Steve French | 3e3761f | 2022-08-29 11:53:41 -0500 | [diff] [blame] | 1293 | |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1294 | /* should we flush first and last page first */ |
| 1295 | truncate_inode_pages(&target_inode->i_data, 0); |
| 1296 | |
Amir Goldstein | bf3c90e | 2019-06-10 20:36:57 +0300 | [diff] [blame] | 1297 | rc = file_modified(dst_file); |
| 1298 | if (!rc) |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1299 | rc = target_tcon->ses->server->ops->copychunk_range(xid, |
| 1300 | smb_file_src, smb_file_target, off, len, destoff); |
Amir Goldstein | bf3c90e | 2019-06-10 20:36:57 +0300 | [diff] [blame] | 1301 | |
| 1302 | file_accessed(src_file); |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1303 | |
| 1304 | /* force revalidate of size and timestamps of target file now |
| 1305 | * that target is updated on the server |
| 1306 | */ |
| 1307 | CIFS_I(target_inode)->time = 0; |
ChenXiaoSong | 5024878 | 2022-11-19 12:51:59 +0800 | [diff] [blame] | 1308 | |
| 1309 | unlock: |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1310 | /* although unlocking in the reverse order from locking is not |
| 1311 | * strictly necessary here it is a little cleaner to be consistent |
| 1312 | */ |
| 1313 | unlock_two_nondirectories(src_inode, target_inode); |
| 1314 | |
| 1315 | out: |
| 1316 | return rc; |
| 1317 | } |
| 1318 | |
Steve French | 6e70c26 | 2018-05-10 10:59:37 -0500 | [diff] [blame] | 1319 | /* |
| 1320 | * Directory operations under CIFS/SMB2/SMB3 are synchronous, so fsync() |
| 1321 | * is a dummy operation. |
| 1322 | */ |
| 1323 | static int cifs_dir_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
| 1324 | { |
| 1325 | cifs_dbg(FYI, "Sync directory - name: %pD datasync: 0x%x\n", |
| 1326 | file, datasync); |
| 1327 | |
| 1328 | return 0; |
| 1329 | } |
| 1330 | |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1331 | static ssize_t cifs_copy_file_range(struct file *src_file, loff_t off, |
| 1332 | struct file *dst_file, loff_t destoff, |
| 1333 | size_t len, unsigned int flags) |
| 1334 | { |
| 1335 | unsigned int xid = get_xid(); |
| 1336 | ssize_t rc; |
Steve French | 4e8aea3 | 2020-04-09 21:42:18 -0500 | [diff] [blame] | 1337 | struct cifsFileInfo *cfile = dst_file->private_data; |
| 1338 | |
Zhang Xiaoxu | 9a97df4 | 2022-10-17 22:45:22 +0800 | [diff] [blame] | 1339 | if (cfile->swapfile) { |
| 1340 | rc = -EOPNOTSUPP; |
| 1341 | free_xid(xid); |
| 1342 | return rc; |
| 1343 | } |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1344 | |
| 1345 | rc = cifs_file_copychunk_range(xid, src_file, off, dst_file, destoff, |
| 1346 | len, flags); |
| 1347 | free_xid(xid); |
Dave Chinner | 64bf5ff | 2019-06-05 08:04:47 -0700 | [diff] [blame] | 1348 | |
Amir Goldstein | 5dae222 | 2019-06-05 08:04:50 -0700 | [diff] [blame] | 1349 | if (rc == -EOPNOTSUPP || rc == -EXDEV) |
Dave Chinner | 64bf5ff | 2019-06-05 08:04:47 -0700 | [diff] [blame] | 1350 | rc = generic_copy_file_range(src_file, off, dst_file, |
| 1351 | destoff, len, flags); |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1352 | return rc; |
| 1353 | } |
| 1354 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 1355 | const struct file_operations cifs_file_ops = { |
Jeff Layton | 08bc035 | 2014-05-23 06:50:21 -0400 | [diff] [blame] | 1356 | .read_iter = cifs_loose_read_iter, |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 1357 | .write_iter = cifs_file_write_iter, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | .open = cifs_open, |
| 1359 | .release = cifs_close, |
| 1360 | .lock = cifs_lock, |
Steve French | d067799 | 2019-07-16 18:55:38 -0500 | [diff] [blame] | 1361 | .flock = cifs_flock, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | .fsync = cifs_fsync, |
| 1363 | .flush = cifs_flush, |
| 1364 | .mmap = cifs_file_mmap, |
David Howells | 4e260a8 | 2022-11-01 14:52:47 +0000 | [diff] [blame] | 1365 | .splice_read = cifs_splice_read, |
Andrés Souto | cd1aca2 | 2017-12-28 14:23:08 +0100 | [diff] [blame] | 1366 | .splice_write = iter_file_splice_write, |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 1367 | .llseek = cifs_llseek, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 1368 | .unlocked_ioctl = cifs_ioctl, |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1369 | .copy_file_range = cifs_copy_file_range, |
Darrick J. Wong | 2e5dfc9 | 2018-10-30 10:41:21 +1100 | [diff] [blame] | 1370 | .remap_file_range = cifs_remap_file_range, |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1371 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 1372 | .fallocate = cifs_fallocate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | }; |
| 1374 | |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1375 | const struct file_operations cifs_file_strict_ops = { |
Al Viro | e6a7bcb | 2014-04-02 19:53:36 -0400 | [diff] [blame] | 1376 | .read_iter = cifs_strict_readv, |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 1377 | .write_iter = cifs_strict_writev, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1378 | .open = cifs_open, |
| 1379 | .release = cifs_close, |
| 1380 | .lock = cifs_lock, |
Steve French | d067799 | 2019-07-16 18:55:38 -0500 | [diff] [blame] | 1381 | .flock = cifs_flock, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1382 | .fsync = cifs_strict_fsync, |
| 1383 | .flush = cifs_flush, |
Pavel Shilovsky | 7a6a19b | 2010-12-14 11:29:51 +0300 | [diff] [blame] | 1384 | .mmap = cifs_file_strict_mmap, |
David Howells | 4e260a8 | 2022-11-01 14:52:47 +0000 | [diff] [blame] | 1385 | .splice_read = cifs_splice_read, |
Andrés Souto | cd1aca2 | 2017-12-28 14:23:08 +0100 | [diff] [blame] | 1386 | .splice_write = iter_file_splice_write, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1387 | .llseek = cifs_llseek, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1388 | .unlocked_ioctl = cifs_ioctl, |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1389 | .copy_file_range = cifs_copy_file_range, |
Darrick J. Wong | 2e5dfc9 | 2018-10-30 10:41:21 +1100 | [diff] [blame] | 1390 | .remap_file_range = cifs_remap_file_range, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1391 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 1392 | .fallocate = cifs_fallocate, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1393 | }; |
| 1394 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 1395 | const struct file_operations cifs_file_direct_ops = { |
Long Li | be4eb68 | 2018-10-31 22:13:11 +0000 | [diff] [blame] | 1396 | .read_iter = cifs_direct_readv, |
| 1397 | .write_iter = cifs_direct_writev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | .open = cifs_open, |
| 1399 | .release = cifs_close, |
| 1400 | .lock = cifs_lock, |
Steve French | d067799 | 2019-07-16 18:55:38 -0500 | [diff] [blame] | 1401 | .flock = cifs_flock, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | .fsync = cifs_fsync, |
| 1403 | .flush = cifs_flush, |
Steve French | a994b8f | 2009-12-07 05:44:46 +0000 | [diff] [blame] | 1404 | .mmap = cifs_file_mmap, |
David Howells | 4e260a8 | 2022-11-01 14:52:47 +0000 | [diff] [blame] | 1405 | .splice_read = direct_splice_read, |
Andrés Souto | cd1aca2 | 2017-12-28 14:23:08 +0100 | [diff] [blame] | 1406 | .splice_write = iter_file_splice_write, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 1407 | .unlocked_ioctl = cifs_ioctl, |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1408 | .copy_file_range = cifs_copy_file_range, |
Darrick J. Wong | 2e5dfc9 | 2018-10-30 10:41:21 +1100 | [diff] [blame] | 1409 | .remap_file_range = cifs_remap_file_range, |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 1410 | .llseek = cifs_llseek, |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1411 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 1412 | .fallocate = cifs_fallocate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | }; |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1414 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 1415 | const struct file_operations cifs_file_nobrl_ops = { |
Jeff Layton | 08bc035 | 2014-05-23 06:50:21 -0400 | [diff] [blame] | 1416 | .read_iter = cifs_loose_read_iter, |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 1417 | .write_iter = cifs_file_write_iter, |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 1418 | .open = cifs_open, |
| 1419 | .release = cifs_close, |
| 1420 | .fsync = cifs_fsync, |
| 1421 | .flush = cifs_flush, |
| 1422 | .mmap = cifs_file_mmap, |
David Howells | 4e260a8 | 2022-11-01 14:52:47 +0000 | [diff] [blame] | 1423 | .splice_read = cifs_splice_read, |
Andrés Souto | cd1aca2 | 2017-12-28 14:23:08 +0100 | [diff] [blame] | 1424 | .splice_write = iter_file_splice_write, |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 1425 | .llseek = cifs_llseek, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 1426 | .unlocked_ioctl = cifs_ioctl, |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1427 | .copy_file_range = cifs_copy_file_range, |
Darrick J. Wong | 2e5dfc9 | 2018-10-30 10:41:21 +1100 | [diff] [blame] | 1428 | .remap_file_range = cifs_remap_file_range, |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1429 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 1430 | .fallocate = cifs_fallocate, |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 1431 | }; |
| 1432 | |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1433 | const struct file_operations cifs_file_strict_nobrl_ops = { |
Al Viro | e6a7bcb | 2014-04-02 19:53:36 -0400 | [diff] [blame] | 1434 | .read_iter = cifs_strict_readv, |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 1435 | .write_iter = cifs_strict_writev, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1436 | .open = cifs_open, |
| 1437 | .release = cifs_close, |
| 1438 | .fsync = cifs_strict_fsync, |
| 1439 | .flush = cifs_flush, |
Pavel Shilovsky | 7a6a19b | 2010-12-14 11:29:51 +0300 | [diff] [blame] | 1440 | .mmap = cifs_file_strict_mmap, |
David Howells | 4e260a8 | 2022-11-01 14:52:47 +0000 | [diff] [blame] | 1441 | .splice_read = cifs_splice_read, |
Andrés Souto | cd1aca2 | 2017-12-28 14:23:08 +0100 | [diff] [blame] | 1442 | .splice_write = iter_file_splice_write, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1443 | .llseek = cifs_llseek, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1444 | .unlocked_ioctl = cifs_ioctl, |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1445 | .copy_file_range = cifs_copy_file_range, |
Darrick J. Wong | 2e5dfc9 | 2018-10-30 10:41:21 +1100 | [diff] [blame] | 1446 | .remap_file_range = cifs_remap_file_range, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1447 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 1448 | .fallocate = cifs_fallocate, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 1449 | }; |
| 1450 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 1451 | const struct file_operations cifs_file_direct_nobrl_ops = { |
Long Li | be4eb68 | 2018-10-31 22:13:11 +0000 | [diff] [blame] | 1452 | .read_iter = cifs_direct_readv, |
| 1453 | .write_iter = cifs_direct_writev, |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 1454 | .open = cifs_open, |
| 1455 | .release = cifs_close, |
| 1456 | .fsync = cifs_fsync, |
| 1457 | .flush = cifs_flush, |
Pavel Shilovsky | 810627a0 | 2010-03-27 02:00:49 +0000 | [diff] [blame] | 1458 | .mmap = cifs_file_mmap, |
David Howells | 4e260a8 | 2022-11-01 14:52:47 +0000 | [diff] [blame] | 1459 | .splice_read = direct_splice_read, |
Andrés Souto | cd1aca2 | 2017-12-28 14:23:08 +0100 | [diff] [blame] | 1460 | .splice_write = iter_file_splice_write, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 1461 | .unlocked_ioctl = cifs_ioctl, |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1462 | .copy_file_range = cifs_copy_file_range, |
Darrick J. Wong | 2e5dfc9 | 2018-10-30 10:41:21 +1100 | [diff] [blame] | 1463 | .remap_file_range = cifs_remap_file_range, |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 1464 | .llseek = cifs_llseek, |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1465 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 1466 | .fallocate = cifs_fallocate, |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 1467 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 1469 | const struct file_operations cifs_dir_ops = { |
Al Viro | 3125d26 | 2016-04-20 17:40:47 -0400 | [diff] [blame] | 1470 | .iterate_shared = cifs_readdir, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | .release = cifs_closedir, |
| 1472 | .read = generic_read_dir, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 1473 | .unlocked_ioctl = cifs_ioctl, |
Sachin Prabhu | 620d874 | 2017-02-10 16:03:51 +0530 | [diff] [blame] | 1474 | .copy_file_range = cifs_copy_file_range, |
Darrick J. Wong | 2e5dfc9 | 2018-10-30 10:41:21 +1100 | [diff] [blame] | 1475 | .remap_file_range = cifs_remap_file_range, |
Christoph Hellwig | 3222a3e | 2008-09-03 21:53:01 +0200 | [diff] [blame] | 1476 | .llseek = generic_file_llseek, |
Steve French | 6e70c26 | 2018-05-10 10:59:37 -0500 | [diff] [blame] | 1477 | .fsync = cifs_dir_fsync, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | }; |
| 1479 | |
| 1480 | static void |
Alexey Dobriyan | 51cc506 | 2008-07-25 19:45:34 -0700 | [diff] [blame] | 1481 | cifs_init_once(void *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | { |
| 1483 | struct cifsInodeInfo *cifsi = inode; |
| 1484 | |
David Howells | 874c8ca1 | 2022-06-09 21:46:04 +0100 | [diff] [blame] | 1485 | inode_init_once(&cifsi->netfs.inode); |
Pavel Shilovsky | 1b4b55a | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 1486 | init_rwsem(&cifsi->lock_sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | } |
| 1488 | |
Fabian Frederick | 9ee108b | 2014-04-03 14:46:30 -0700 | [diff] [blame] | 1489 | static int __init |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | cifs_init_inodecache(void) |
| 1491 | { |
| 1492 | cifs_inode_cachep = kmem_cache_create("cifs_inode_cache", |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 1493 | sizeof(struct cifsInodeInfo), |
Paul Jackson | fffb60f | 2006-03-24 03:16:06 -0800 | [diff] [blame] | 1494 | 0, (SLAB_RECLAIM_ACCOUNT| |
Vladimir Davydov | 5d09705 | 2016-01-14 15:18:21 -0800 | [diff] [blame] | 1495 | SLAB_MEM_SPREAD|SLAB_ACCOUNT), |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 1496 | cifs_init_once); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | if (cifs_inode_cachep == NULL) |
| 1498 | return -ENOMEM; |
| 1499 | |
| 1500 | return 0; |
| 1501 | } |
| 1502 | |
| 1503 | static void |
| 1504 | cifs_destroy_inodecache(void) |
| 1505 | { |
Kirill A. Shutemov | 8c0a853 | 2012-09-26 11:33:07 +1000 | [diff] [blame] | 1506 | /* |
| 1507 | * Make sure all delayed rcu free inodes are flushed before we |
| 1508 | * destroy cache. |
| 1509 | */ |
| 1510 | rcu_barrier(); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1511 | kmem_cache_destroy(cifs_inode_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | } |
| 1513 | |
| 1514 | static int |
| 1515 | cifs_init_request_bufs(void) |
| 1516 | { |
Pavel Shilovsky | 3792c17 | 2012-01-12 22:40:50 +0400 | [diff] [blame] | 1517 | /* |
| 1518 | * SMB2 maximum header size is bigger than CIFS one - no problems to |
| 1519 | * allocate some more bytes for CIFS. |
| 1520 | */ |
Steve French | 2a38e12 | 2017-07-08 18:48:15 -0500 | [diff] [blame] | 1521 | size_t max_hdr_size = MAX_SMB2_HDR_SIZE; |
| 1522 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1523 | if (CIFSMaxBufSize < 8192) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | /* Buffer size can not be smaller than 2 * PATH_MAX since maximum |
| 1525 | Unicode path name has to fit in any SMB/CIFS path based frames */ |
| 1526 | CIFSMaxBufSize = 8192; |
| 1527 | } else if (CIFSMaxBufSize > 1024*127) { |
| 1528 | CIFSMaxBufSize = 1024 * 127; |
| 1529 | } else { |
| 1530 | CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/ |
| 1531 | } |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1532 | /* |
| 1533 | cifs_dbg(VFS, "CIFSMaxBufSize %d 0x%x\n", |
| 1534 | CIFSMaxBufSize, CIFSMaxBufSize); |
| 1535 | */ |
David Windsor | de04644 | 2017-06-10 22:50:33 -0400 | [diff] [blame] | 1536 | cifs_req_cachep = kmem_cache_create_usercopy("cifs_request", |
Pavel Shilovsky | 3792c17 | 2012-01-12 22:40:50 +0400 | [diff] [blame] | 1537 | CIFSMaxBufSize + max_hdr_size, 0, |
David Windsor | de04644 | 2017-06-10 22:50:33 -0400 | [diff] [blame] | 1538 | SLAB_HWCACHE_ALIGN, 0, |
| 1539 | CIFSMaxBufSize + max_hdr_size, |
| 1540 | NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | if (cifs_req_cachep == NULL) |
| 1542 | return -ENOMEM; |
| 1543 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1544 | if (cifs_min_rcv < 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | cifs_min_rcv = 1; |
| 1546 | else if (cifs_min_rcv > 64) { |
| 1547 | cifs_min_rcv = 64; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1548 | cifs_dbg(VFS, "cifs_min_rcv set to maximum (64)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | } |
| 1550 | |
Matthew Dobson | 93d2341 | 2006-03-26 01:37:50 -0800 | [diff] [blame] | 1551 | cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv, |
| 1552 | cifs_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1554 | if (cifs_req_poolp == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | kmem_cache_destroy(cifs_req_cachep); |
| 1556 | return -ENOMEM; |
| 1557 | } |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 1558 | /* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | almost all handle based requests (but not write response, nor is it |
| 1560 | sufficient for path based requests). A smaller size would have |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1561 | been more efficient (compacting multiple slab items on one 4k page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | for the case in which debug was on, but this larger size allows |
| 1563 | more SMBs to use small buffer alloc and is still much more |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1564 | efficient to alloc 1 per page off the slab compared to 17K (5page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | alloc of large cifs buffers even when page debugging is on */ |
David Windsor | de04644 | 2017-06-10 22:50:33 -0400 | [diff] [blame] | 1566 | cifs_sm_req_cachep = kmem_cache_create_usercopy("cifs_small_rq", |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1567 | MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN, |
David Windsor | de04644 | 2017-06-10 22:50:33 -0400 | [diff] [blame] | 1568 | 0, MAX_CIFS_SMALL_BUFFER_SIZE, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | if (cifs_sm_req_cachep == NULL) { |
| 1570 | mempool_destroy(cifs_req_poolp); |
| 1571 | kmem_cache_destroy(cifs_req_cachep); |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1572 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1573 | } |
| 1574 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1575 | if (cifs_min_small < 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | cifs_min_small = 2; |
| 1577 | else if (cifs_min_small > 256) { |
| 1578 | cifs_min_small = 256; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1579 | cifs_dbg(FYI, "cifs_min_small set to maximum (256)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | } |
| 1581 | |
Matthew Dobson | 93d2341 | 2006-03-26 01:37:50 -0800 | [diff] [blame] | 1582 | cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small, |
| 1583 | cifs_sm_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1585 | if (cifs_sm_req_poolp == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1586 | mempool_destroy(cifs_req_poolp); |
| 1587 | kmem_cache_destroy(cifs_req_cachep); |
| 1588 | kmem_cache_destroy(cifs_sm_req_cachep); |
| 1589 | return -ENOMEM; |
| 1590 | } |
| 1591 | |
| 1592 | return 0; |
| 1593 | } |
| 1594 | |
| 1595 | static void |
| 1596 | cifs_destroy_request_bufs(void) |
| 1597 | { |
| 1598 | mempool_destroy(cifs_req_poolp); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1599 | kmem_cache_destroy(cifs_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | mempool_destroy(cifs_sm_req_poolp); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1601 | kmem_cache_destroy(cifs_sm_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | } |
| 1603 | |
Enzo Matsumiya | f5fd3f28 | 2022-08-05 11:47:39 -0300 | [diff] [blame] | 1604 | static int init_mids(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | { |
| 1606 | cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids", |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 1607 | sizeof(struct mid_q_entry), 0, |
| 1608 | SLAB_HWCACHE_ALIGN, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | if (cifs_mid_cachep == NULL) |
| 1610 | return -ENOMEM; |
| 1611 | |
Matthew Dobson | 93d2341 | 2006-03-26 01:37:50 -0800 | [diff] [blame] | 1612 | /* 3 is a reasonable minimum number of simultaneous operations */ |
| 1613 | cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1614 | if (cifs_mid_poolp == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | kmem_cache_destroy(cifs_mid_cachep); |
| 1616 | return -ENOMEM; |
| 1617 | } |
| 1618 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | return 0; |
| 1620 | } |
| 1621 | |
Enzo Matsumiya | f5fd3f28 | 2022-08-05 11:47:39 -0300 | [diff] [blame] | 1622 | static void destroy_mids(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | { |
| 1624 | mempool_destroy(cifs_mid_poolp); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1625 | kmem_cache_destroy(cifs_mid_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | } |
| 1627 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | static int __init |
| 1629 | init_cifs(void) |
| 1630 | { |
| 1631 | int rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1632 | cifs_proc_init(); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1633 | INIT_LIST_HEAD(&cifs_tcp_ses_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | /* |
| 1635 | * Initialize Global counters |
| 1636 | */ |
| 1637 | atomic_set(&sesInfoAllocCount, 0); |
| 1638 | atomic_set(&tconInfoAllocCount, 0); |
Shyam Prasad N | 6d82c27 | 2021-02-03 23:20:46 -0800 | [diff] [blame] | 1639 | atomic_set(&tcpSesNextId, 0); |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1640 | atomic_set(&tcpSesAllocCount, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1641 | atomic_set(&tcpSesReconnectCount, 0); |
| 1642 | atomic_set(&tconInfoReconnectCount, 0); |
| 1643 | |
Steve French | c2c17dd | 2022-07-15 23:45:45 -0500 | [diff] [blame] | 1644 | atomic_set(&buf_alloc_count, 0); |
| 1645 | atomic_set(&small_buf_alloc_count, 0); |
Steve French | 4498eed5 | 2005-12-03 13:58:57 -0800 | [diff] [blame] | 1646 | #ifdef CONFIG_CIFS_STATS2 |
Steve French | c2c17dd | 2022-07-15 23:45:45 -0500 | [diff] [blame] | 1647 | atomic_set(&total_buf_alloc_count, 0); |
| 1648 | atomic_set(&total_small_buf_alloc_count, 0); |
Steve French | 00778e2 | 2018-09-18 14:05:18 -0500 | [diff] [blame] | 1649 | if (slow_rsp_threshold < 1) |
| 1650 | cifs_dbg(FYI, "slow_response_threshold msgs disabled\n"); |
| 1651 | else if (slow_rsp_threshold > 32767) |
| 1652 | cifs_dbg(VFS, |
| 1653 | "slow response threshold set higher than recommended (0 to 32767)\n"); |
Steve French | 4498eed5 | 2005-12-03 13:58:57 -0800 | [diff] [blame] | 1654 | #endif /* CONFIG_CIFS_STATS2 */ |
| 1655 | |
Steve French | c2c17dd | 2022-07-15 23:45:45 -0500 | [diff] [blame] | 1656 | atomic_set(&mid_count, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | GlobalCurrentXid = 0; |
| 1658 | GlobalTotalActiveXid = 0; |
| 1659 | GlobalMaxActiveXid = 0; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1660 | spin_lock_init(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1661 | spin_lock_init(&GlobalMid_Lock); |
| 1662 | |
Jason A. Donenfeld | 51b0817 | 2017-06-07 20:42:50 -0400 | [diff] [blame] | 1663 | cifs_lock_secret = get_random_u32(); |
Jeff Layton | 3d22462 | 2016-05-24 06:27:44 -0400 | [diff] [blame] | 1664 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1665 | if (cifs_max_pending < 2) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1666 | cifs_max_pending = 2; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1667 | cifs_dbg(FYI, "cifs_max_pending set to min of 2\n"); |
Pavel Shilovsky | 10b9b98 | 2012-03-20 12:55:09 +0300 | [diff] [blame] | 1668 | } else if (cifs_max_pending > CIFS_MAX_REQ) { |
| 1669 | cifs_max_pending = CIFS_MAX_REQ; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1670 | cifs_dbg(FYI, "cifs_max_pending set to max of %u\n", |
| 1671 | CIFS_MAX_REQ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | } |
| 1673 | |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1674 | cifsiod_wq = alloc_workqueue("cifsiod", WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
| 1675 | if (!cifsiod_wq) { |
| 1676 | rc = -ENOMEM; |
| 1677 | goto out_clean_proc; |
| 1678 | } |
| 1679 | |
Steve French | 35cf94a | 2019-09-07 01:09:49 -0500 | [diff] [blame] | 1680 | /* |
Steve French | 10328c4 | 2019-09-09 13:30:15 -0500 | [diff] [blame] | 1681 | * Consider in future setting limit!=0 maybe to min(num_of_cores - 1, 3) |
| 1682 | * so that we don't launch too many worker threads but |
Mauro Carvalho Chehab | 0ac624f | 2019-09-24 10:01:28 -0300 | [diff] [blame] | 1683 | * Documentation/core-api/workqueue.rst recommends setting it to 0 |
Steve French | 35cf94a | 2019-09-07 01:09:49 -0500 | [diff] [blame] | 1684 | */ |
Steve French | 10328c4 | 2019-09-09 13:30:15 -0500 | [diff] [blame] | 1685 | |
| 1686 | /* WQ_UNBOUND allows decrypt tasks to run on any CPU */ |
Steve French | 35cf94a | 2019-09-07 01:09:49 -0500 | [diff] [blame] | 1687 | decrypt_wq = alloc_workqueue("smb3decryptd", |
Steve French | 10328c4 | 2019-09-09 13:30:15 -0500 | [diff] [blame] | 1688 | WQ_UNBOUND|WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
Steve French | 35cf94a | 2019-09-07 01:09:49 -0500 | [diff] [blame] | 1689 | if (!decrypt_wq) { |
| 1690 | rc = -ENOMEM; |
| 1691 | goto out_destroy_cifsiod_wq; |
| 1692 | } |
| 1693 | |
Ronnie Sahlberg | 32546a9 | 2019-11-03 13:06:37 +1000 | [diff] [blame] | 1694 | fileinfo_put_wq = alloc_workqueue("cifsfileinfoput", |
| 1695 | WQ_UNBOUND|WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
| 1696 | if (!fileinfo_put_wq) { |
| 1697 | rc = -ENOMEM; |
| 1698 | goto out_destroy_decrypt_wq; |
| 1699 | } |
| 1700 | |
Rabin Vincent | 3998e6b8 | 2017-05-03 17:54:01 +0200 | [diff] [blame] | 1701 | cifsoplockd_wq = alloc_workqueue("cifsoplockd", |
| 1702 | WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
| 1703 | if (!cifsoplockd_wq) { |
| 1704 | rc = -ENOMEM; |
Ronnie Sahlberg | 32546a9 | 2019-11-03 13:06:37 +1000 | [diff] [blame] | 1705 | goto out_destroy_fileinfo_put_wq; |
Rabin Vincent | 3998e6b8 | 2017-05-03 17:54:01 +0200 | [diff] [blame] | 1706 | } |
| 1707 | |
Rohith Surabattula | c3f207ab | 2021-04-13 00:26:42 -0500 | [diff] [blame] | 1708 | deferredclose_wq = alloc_workqueue("deferredclose", |
| 1709 | WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
| 1710 | if (!deferredclose_wq) { |
| 1711 | rc = -ENOMEM; |
| 1712 | goto out_destroy_cifsoplockd_wq; |
| 1713 | } |
| 1714 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | rc = cifs_init_inodecache(); |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1716 | if (rc) |
David Howells | 70431bf | 2020-11-17 15:56:59 +0000 | [diff] [blame] | 1717 | goto out_destroy_deferredclose_wq; |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1718 | |
Enzo Matsumiya | f5fd3f28 | 2022-08-05 11:47:39 -0300 | [diff] [blame] | 1719 | rc = init_mids(); |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1720 | if (rc) |
| 1721 | goto out_destroy_inodecache; |
| 1722 | |
| 1723 | rc = cifs_init_request_bufs(); |
| 1724 | if (rc) |
| 1725 | goto out_destroy_mids; |
| 1726 | |
Paulo Alcantara | 1c78022 | 2018-11-14 16:24:03 -0200 | [diff] [blame] | 1727 | #ifdef CONFIG_CIFS_DFS_UPCALL |
| 1728 | rc = dfs_cache_init(); |
| 1729 | if (rc) |
| 1730 | goto out_destroy_request_bufs; |
| 1731 | #endif /* CONFIG_CIFS_DFS_UPCALL */ |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 1732 | #ifdef CONFIG_CIFS_UPCALL |
Sachin Prabhu | b74cb9a | 2016-05-17 18:20:13 -0500 | [diff] [blame] | 1733 | rc = init_cifs_spnego(); |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 1734 | if (rc) |
Paulo Alcantara | 1c78022 | 2018-11-14 16:24:03 -0200 | [diff] [blame] | 1735 | goto out_destroy_dfs_cache; |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1736 | #endif /* CONFIG_CIFS_UPCALL */ |
Samuel Cabrero | 06f08da | 2020-11-30 19:02:49 +0100 | [diff] [blame] | 1737 | #ifdef CONFIG_CIFS_SWN_UPCALL |
| 1738 | rc = cifs_genl_init(); |
| 1739 | if (rc) |
| 1740 | goto out_register_key_type; |
| 1741 | #endif /* CONFIG_CIFS_SWN_UPCALL */ |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1742 | |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1743 | rc = init_cifs_idmap(); |
| 1744 | if (rc) |
Samuel Cabrero | 06f08da | 2020-11-30 19:02:49 +0100 | [diff] [blame] | 1745 | goto out_cifs_swn_init; |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1746 | |
| 1747 | rc = register_filesystem(&cifs_fs_type); |
| 1748 | if (rc) |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1749 | goto out_init_cifs_idmap; |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1750 | |
Steve French | 49218b4 | 2018-05-23 21:44:53 -0500 | [diff] [blame] | 1751 | rc = register_filesystem(&smb3_fs_type); |
| 1752 | if (rc) { |
| 1753 | unregister_filesystem(&cifs_fs_type); |
| 1754 | goto out_init_cifs_idmap; |
| 1755 | } |
| 1756 | |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1757 | return 0; |
| 1758 | |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1759 | out_init_cifs_idmap: |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1760 | exit_cifs_idmap(); |
Samuel Cabrero | 06f08da | 2020-11-30 19:02:49 +0100 | [diff] [blame] | 1761 | out_cifs_swn_init: |
| 1762 | #ifdef CONFIG_CIFS_SWN_UPCALL |
| 1763 | cifs_genl_exit(); |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1764 | out_register_key_type: |
Samuel Cabrero | 06f08da | 2020-11-30 19:02:49 +0100 | [diff] [blame] | 1765 | #endif |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1766 | #ifdef CONFIG_CIFS_UPCALL |
Sachin Prabhu | b74cb9a | 2016-05-17 18:20:13 -0500 | [diff] [blame] | 1767 | exit_cifs_spnego(); |
Paulo Alcantara | 1c78022 | 2018-11-14 16:24:03 -0200 | [diff] [blame] | 1768 | out_destroy_dfs_cache: |
| 1769 | #endif |
| 1770 | #ifdef CONFIG_CIFS_DFS_UPCALL |
| 1771 | dfs_cache_destroy(); |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1772 | out_destroy_request_bufs: |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1773 | #endif |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1774 | cifs_destroy_request_bufs(); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1775 | out_destroy_mids: |
Enzo Matsumiya | f5fd3f28 | 2022-08-05 11:47:39 -0300 | [diff] [blame] | 1776 | destroy_mids(); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1777 | out_destroy_inodecache: |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1778 | cifs_destroy_inodecache(); |
Rohith Surabattula | c3f207ab | 2021-04-13 00:26:42 -0500 | [diff] [blame] | 1779 | out_destroy_deferredclose_wq: |
| 1780 | destroy_workqueue(deferredclose_wq); |
Rabin Vincent | 3998e6b8 | 2017-05-03 17:54:01 +0200 | [diff] [blame] | 1781 | out_destroy_cifsoplockd_wq: |
| 1782 | destroy_workqueue(cifsoplockd_wq); |
Ronnie Sahlberg | 32546a9 | 2019-11-03 13:06:37 +1000 | [diff] [blame] | 1783 | out_destroy_fileinfo_put_wq: |
| 1784 | destroy_workqueue(fileinfo_put_wq); |
Steve French | 35cf94a | 2019-09-07 01:09:49 -0500 | [diff] [blame] | 1785 | out_destroy_decrypt_wq: |
| 1786 | destroy_workqueue(decrypt_wq); |
Rabin Vincent | 3998e6b8 | 2017-05-03 17:54:01 +0200 | [diff] [blame] | 1787 | out_destroy_cifsiod_wq: |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1788 | destroy_workqueue(cifsiod_wq); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1789 | out_clean_proc: |
| 1790 | cifs_proc_clean(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | return rc; |
| 1792 | } |
| 1793 | |
| 1794 | static void __exit |
| 1795 | exit_cifs(void) |
| 1796 | { |
Steve French | 49218b4 | 2018-05-23 21:44:53 -0500 | [diff] [blame] | 1797 | cifs_dbg(NOISY, "exit_smb3\n"); |
Jeff Layton | 3dd9330 | 2012-03-21 06:27:55 -0400 | [diff] [blame] | 1798 | unregister_filesystem(&cifs_fs_type); |
Steve French | 49218b4 | 2018-05-23 21:44:53 -0500 | [diff] [blame] | 1799 | unregister_filesystem(&smb3_fs_type); |
Igor Mammedov | 78d31a3 | 2008-04-24 12:56:07 +0400 | [diff] [blame] | 1800 | cifs_dfs_release_automount_timer(); |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1801 | exit_cifs_idmap(); |
Samuel Cabrero | 06f08da | 2020-11-30 19:02:49 +0100 | [diff] [blame] | 1802 | #ifdef CONFIG_CIFS_SWN_UPCALL |
| 1803 | cifs_genl_exit(); |
| 1804 | #endif |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 1805 | #ifdef CONFIG_CIFS_UPCALL |
Shu Wang | 9418333 | 2017-09-07 16:03:27 +0800 | [diff] [blame] | 1806 | exit_cifs_spnego(); |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 1807 | #endif |
Paulo Alcantara | 1c78022 | 2018-11-14 16:24:03 -0200 | [diff] [blame] | 1808 | #ifdef CONFIG_CIFS_DFS_UPCALL |
| 1809 | dfs_cache_destroy(); |
| 1810 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | cifs_destroy_request_bufs(); |
Enzo Matsumiya | f5fd3f28 | 2022-08-05 11:47:39 -0300 | [diff] [blame] | 1812 | destroy_mids(); |
Jeff Layton | 3dd9330 | 2012-03-21 06:27:55 -0400 | [diff] [blame] | 1813 | cifs_destroy_inodecache(); |
Rohith Surabattula | c3f207ab | 2021-04-13 00:26:42 -0500 | [diff] [blame] | 1814 | destroy_workqueue(deferredclose_wq); |
Rabin Vincent | 3998e6b8 | 2017-05-03 17:54:01 +0200 | [diff] [blame] | 1815 | destroy_workqueue(cifsoplockd_wq); |
Steve French | 35cf94a | 2019-09-07 01:09:49 -0500 | [diff] [blame] | 1816 | destroy_workqueue(decrypt_wq); |
Ronnie Sahlberg | 32546a9 | 2019-11-03 13:06:37 +1000 | [diff] [blame] | 1817 | destroy_workqueue(fileinfo_put_wq); |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1818 | destroy_workqueue(cifsiod_wq); |
Jeff Layton | 3dd9330 | 2012-03-21 06:27:55 -0400 | [diff] [blame] | 1819 | cifs_proc_clean(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | } |
| 1821 | |
Steve French | 1c3a13a | 2018-09-18 04:07:45 -0500 | [diff] [blame] | 1822 | MODULE_AUTHOR("Steve French"); |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1823 | MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | MODULE_DESCRIPTION |
Steve French | 1c3a13a | 2018-09-18 04:07:45 -0500 | [diff] [blame] | 1825 | ("VFS to access SMB3 servers e.g. Samba, Macs, Azure and Windows (and " |
| 1826 | "also older servers complying with the SNIA CIFS Specification)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | MODULE_VERSION(CIFS_VERSION); |
Ronnie Sahlberg | 3591bb8 | 2019-10-31 13:55:14 +1000 | [diff] [blame] | 1828 | MODULE_SOFTDEP("ecb"); |
| 1829 | MODULE_SOFTDEP("hmac"); |
Ronnie Sahlberg | 3591bb8 | 2019-10-31 13:55:14 +1000 | [diff] [blame] | 1830 | MODULE_SOFTDEP("md5"); |
| 1831 | MODULE_SOFTDEP("nls"); |
| 1832 | MODULE_SOFTDEP("aes"); |
| 1833 | MODULE_SOFTDEP("cmac"); |
| 1834 | MODULE_SOFTDEP("sha256"); |
| 1835 | MODULE_SOFTDEP("sha512"); |
| 1836 | MODULE_SOFTDEP("aead2"); |
| 1837 | MODULE_SOFTDEP("ccm"); |
| 1838 | MODULE_SOFTDEP("gcm"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1839 | module_init(init_cifs) |
| 1840 | module_exit(exit_cifs) |