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929be906 | 1 | // SPDX-License-Identifier: LGPL-2.1 |
1da177e4 | 2 | /* |
1da177e4 | 3 | * |
2b280fab | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Common Internet FileSystem (CIFS) client | |
8 | * | |
1da177e4 LT |
9 | */ |
10 | ||
11 | /* Note that BB means BUGBUG (ie something to fix eventually) */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/fs.h> | |
15 | #include <linux/mount.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/list.h> | |
19 | #include <linux/seq_file.h> | |
20 | #include <linux/vfs.h> | |
21 | #include <linux/mempool.h> | |
6ab16d24 | 22 | #include <linux/delay.h> |
45af7a0f | 23 | #include <linux/kthread.h> |
7dfb7103 | 24 | #include <linux/freezer.h> |
fec11dd9 | 25 | #include <linux/namei.h> |
b8c32dbb | 26 | #include <linux/random.h> |
c6e970a0 | 27 | #include <linux/uuid.h> |
a9ae008f | 28 | #include <linux/xattr.h> |
3eb9a889 | 29 | #include <net/ipv6.h> |
1da177e4 LT |
30 | #include "cifsfs.h" |
31 | #include "cifspdu.h" | |
32 | #define DECLARE_GLOBALS_HERE | |
33 | #include "cifsglob.h" | |
34 | #include "cifsproto.h" | |
35 | #include "cifs_debug.h" | |
36 | #include "cifs_fs_sb.h" | |
37 | #include <linux/mm.h> | |
84a15b93 | 38 | #include <linux/key-type.h> |
e545937a | 39 | #include "cifs_spnego.h" |
f579cf3c | 40 | #include "fscache.h" |
3792c173 | 41 | #include "smb2pdu.h" |
1c780228 PA |
42 | #ifdef CONFIG_CIFS_DFS_UPCALL |
43 | #include "dfs_cache.h" | |
44 | #endif | |
06f08dab SC |
45 | #ifdef CONFIG_CIFS_SWN_UPCALL |
46 | #include "netlink.h" | |
47 | #endif | |
3fa1c6d1 | 48 | #include "fs_context.h" |
1da177e4 | 49 | |
cb7a69e6 DD |
50 | /* |
51 | * DOS dates from 1980/1/1 through 2107/12/31 | |
52 | * Protocol specifications indicate the range should be to 119, which | |
53 | * limits maximum year to 2099. But this range has not been checked. | |
54 | */ | |
55 | #define SMB_DATE_MAX (127<<9 | 12<<5 | 31) | |
56 | #define SMB_DATE_MIN (0<<9 | 1<<5 | 1) | |
57 | #define SMB_TIME_MAX (23<<11 | 59<<5 | 29) | |
58 | ||
1da177e4 | 59 | int cifsFYI = 0; |
1404297e | 60 | bool traceSMB; |
e7504734 | 61 | bool enable_oplocks = true; |
1404297e KC |
62 | bool linuxExtEnabled = true; |
63 | bool lookupCacheEnabled = true; | |
f92a720e | 64 | bool disable_legacy_dialects; /* false by default */ |
fee742b5 | 65 | bool enable_gcm_256 = true; |
fbfd0b46 | 66 | bool require_gcm_256; /* false by default */ |
53d31a3f | 67 | bool enable_negotiate_signing; /* false by default */ |
04912d6a | 68 | unsigned int global_secflags = CIFSSEC_DEF; |
3979877e | 69 | /* unsigned int ntlmv2_support = 0; */ |
1da177e4 | 70 | unsigned int sign_CIFS_PDUs = 1; |
ee9b6d61 | 71 | static const struct super_operations cifs_super_ops; |
1da177e4 | 72 | unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE; |
cb978ac8 | 73 | module_param(CIFSMaxBufSize, uint, 0444); |
11911b95 SF |
74 | MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header) " |
75 | "for CIFS requests. " | |
63135e08 | 76 | "Default: 16384 Range: 8192 to 130048"); |
1da177e4 | 77 | unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL; |
cb978ac8 | 78 | module_param(cifs_min_rcv, uint, 0444); |
63135e08 SF |
79 | MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: " |
80 | "1 to 64"); | |
1da177e4 | 81 | unsigned int cifs_min_small = 30; |
cb978ac8 | 82 | module_param(cifs_min_small, uint, 0444); |
63135e08 SF |
83 | MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 " |
84 | "Range: 2 to 256"); | |
1da177e4 | 85 | unsigned int cifs_max_pending = CIFS_MAX_REQ; |
60654ce0 | 86 | module_param(cifs_max_pending, uint, 0444); |
11911b95 SF |
87 | MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server for " |
88 | "CIFS/SMB1 dialect (N/A for SMB3) " | |
10b9b98e | 89 | "Default: 32767 Range: 2 to 32767."); |
00778e22 SF |
90 | #ifdef CONFIG_CIFS_STATS2 |
91 | unsigned int slow_rsp_threshold = 1; | |
92 | module_param(slow_rsp_threshold, uint, 0644); | |
93 | MODULE_PARM_DESC(slow_rsp_threshold, "Amount of time (in seconds) to wait " | |
94 | "before logging that a response is delayed. " | |
95 | "Default: 1 (if set to 0 disables msg)."); | |
96 | #endif /* STATS2 */ | |
97 | ||
e7504734 | 98 | module_param(enable_oplocks, bool, 0644); |
60654ce0 | 99 | MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks. Default: y/Y/1"); |
e7504734 | 100 | |
29e27923 SF |
101 | module_param(enable_gcm_256, bool, 0644); |
102 | MODULE_PARM_DESC(enable_gcm_256, "Enable requesting strongest (256 bit) GCM encryption. Default: n/N/0"); | |
103 | ||
fbfd0b46 SF |
104 | module_param(require_gcm_256, bool, 0644); |
105 | MODULE_PARM_DESC(require_gcm_256, "Require strongest (256 bit) GCM encryption. Default: n/N/0"); | |
106 | ||
53d31a3f SF |
107 | module_param(enable_negotiate_signing, bool, 0644); |
108 | MODULE_PARM_DESC(enable_negotiate_signing, "Enable negotiating packet signing algorithm with server. Default: n/N/0"); | |
109 | ||
f92a720e SF |
110 | module_param(disable_legacy_dialects, bool, 0644); |
111 | MODULE_PARM_DESC(disable_legacy_dialects, "To improve security it may be " | |
112 | "helpful to restrict the ability to " | |
113 | "override the default dialects (SMB2.1, " | |
114 | "SMB3 and SMB3.02) on mount with old " | |
115 | "dialects (CIFS/SMB1 and SMB2) since " | |
116 | "vers=1.0 (CIFS/SMB1) and vers=2.0 are weaker" | |
117 | " and less secure. Default: n/N/0"); | |
118 | ||
1da177e4 LT |
119 | extern mempool_t *cifs_sm_req_poolp; |
120 | extern mempool_t *cifs_req_poolp; | |
121 | extern mempool_t *cifs_mid_poolp; | |
122 | ||
da472fc8 | 123 | struct workqueue_struct *cifsiod_wq; |
35cf94a3 | 124 | struct workqueue_struct *decrypt_wq; |
32546a95 | 125 | struct workqueue_struct *fileinfo_put_wq; |
3998e6b8 | 126 | struct workqueue_struct *cifsoplockd_wq; |
860b69a9 | 127 | struct workqueue_struct *deferredclose_wq; |
3d22462a | 128 | __u32 cifs_lock_secret; |
da472fc8 | 129 | |
24261fc2 MG |
130 | /* |
131 | * Bumps refcount for cifs super block. | |
132 | * Note that it should be only called if a referece to VFS super block is | |
133 | * already held, e.g. in open-type syscalls context. Otherwise it can race with | |
134 | * atomic_dec_and_test in deactivate_locked_super. | |
135 | */ | |
136 | void | |
137 | cifs_sb_active(struct super_block *sb) | |
138 | { | |
139 | struct cifs_sb_info *server = CIFS_SB(sb); | |
140 | ||
141 | if (atomic_inc_return(&server->active) == 1) | |
142 | atomic_inc(&sb->s_active); | |
143 | } | |
144 | ||
145 | void | |
146 | cifs_sb_deactive(struct super_block *sb) | |
147 | { | |
148 | struct cifs_sb_info *server = CIFS_SB(sb); | |
149 | ||
150 | if (atomic_dec_and_test(&server->active)) | |
151 | deactivate_super(sb); | |
152 | } | |
153 | ||
1da177e4 | 154 | static int |
97d1152a | 155 | cifs_read_super(struct super_block *sb) |
1da177e4 LT |
156 | { |
157 | struct inode *inode; | |
b2e5cd33 | 158 | struct cifs_sb_info *cifs_sb; |
2f6c9479 | 159 | struct cifs_tcon *tcon; |
cb7a69e6 | 160 | struct timespec64 ts; |
1da177e4 | 161 | int rc = 0; |
50c2f753 | 162 | |
b2e5cd33 | 163 | cifs_sb = CIFS_SB(sb); |
2f6c9479 | 164 | tcon = cifs_sb_master_tcon(cifs_sb); |
1da177e4 | 165 | |
2c6292ae | 166 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL) |
1751e8a6 | 167 | sb->s_flags |= SB_POSIXACL; |
2c6292ae | 168 | |
8a69e96e SF |
169 | if (tcon->snapshot_time) |
170 | sb->s_flags |= SB_RDONLY; | |
171 | ||
2f6c9479 | 172 | if (tcon->ses->capabilities & tcon->ses->server->vals->cap_large_files) |
2c6292ae AV |
173 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
174 | else | |
175 | sb->s_maxbytes = MAX_NON_LFS; | |
176 | ||
553292a6 SF |
177 | /* |
178 | * Some very old servers like DOS and OS/2 used 2 second granularity | |
179 | * (while all current servers use 100ns granularity - see MS-DTYP) | |
180 | * but 1 second is the maximum allowed granularity for the VFS | |
181 | * so for old servers set time granularity to 1 second while for | |
182 | * everything else (current servers) set it to 100ns. | |
183 | */ | |
d4cfbf04 SF |
184 | if ((tcon->ses->server->vals->protocol_id == SMB10_PROT_ID) && |
185 | ((tcon->ses->capabilities & | |
186 | tcon->ses->server->vals->cap_nt_find) == 0) && | |
187 | !tcon->unix_ext) { | |
188 | sb->s_time_gran = 1000000000; /* 1 second is max allowed gran */ | |
189 | ts = cnvrtDosUnixTm(cpu_to_le16(SMB_DATE_MIN), 0, 0); | |
cb7a69e6 | 190 | sb->s_time_min = ts.tv_sec; |
d4cfbf04 SF |
191 | ts = cnvrtDosUnixTm(cpu_to_le16(SMB_DATE_MAX), |
192 | cpu_to_le16(SMB_TIME_MAX), 0); | |
cb7a69e6 DD |
193 | sb->s_time_max = ts.tv_sec; |
194 | } else { | |
d4cfbf04 SF |
195 | /* |
196 | * Almost every server, including all SMB2+, uses DCE TIME | |
197 | * ie 100 nanosecond units, since 1601. See MS-DTYP and MS-FSCC | |
198 | */ | |
199 | sb->s_time_gran = 100; | |
200 | ts = cifs_NTtimeToUnix(0); | |
cb7a69e6 | 201 | sb->s_time_min = ts.tv_sec; |
d4cfbf04 | 202 | ts = cifs_NTtimeToUnix(cpu_to_le64(S64_MAX)); |
cb7a69e6 DD |
203 | sb->s_time_max = ts.tv_sec; |
204 | } | |
205 | ||
1da177e4 LT |
206 | sb->s_magic = CIFS_MAGIC_NUMBER; |
207 | sb->s_op = &cifs_super_ops; | |
a9ae008f | 208 | sb->s_xattr = cifs_xattr_handlers; |
851ea086 JK |
209 | rc = super_setup_bdi(sb); |
210 | if (rc) | |
211 | goto out_no_root; | |
b8d64f8c SF |
212 | /* tune readahead according to rsize if readahead size not set on mount */ |
213 | if (cifs_sb->ctx->rasize) | |
214 | sb->s_bdi->ra_pages = cifs_sb->ctx->rasize / PAGE_SIZE; | |
215 | else | |
216 | sb->s_bdi->ra_pages = cifs_sb->ctx->rsize / PAGE_SIZE; | |
851ea086 | 217 | |
1da177e4 LT |
218 | sb->s_blocksize = CIFS_MAX_MSGSIZE; |
219 | sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */ | |
9b6763e0 | 220 | inode = cifs_root_iget(sb); |
1da177e4 | 221 | |
ce634ab2 DH |
222 | if (IS_ERR(inode)) { |
223 | rc = PTR_ERR(inode); | |
1da177e4 LT |
224 | goto out_no_root; |
225 | } | |
226 | ||
2f6c9479 | 227 | if (tcon->nocase) |
66ffd113 JL |
228 | sb->s_d_op = &cifs_ci_dentry_ops; |
229 | else | |
230 | sb->s_d_op = &cifs_dentry_ops; | |
231 | ||
48fde701 | 232 | sb->s_root = d_make_root(inode); |
1da177e4 LT |
233 | if (!sb->s_root) { |
234 | rc = -ENOMEM; | |
235 | goto out_no_root; | |
236 | } | |
50c2f753 | 237 | |
f3a6a60e | 238 | #ifdef CONFIG_CIFS_NFSD_EXPORT |
7521a3c5 | 239 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
f96637be | 240 | cifs_dbg(FYI, "export ops supported\n"); |
7521a3c5 SF |
241 | sb->s_export_op = &cifs_export_ops; |
242 | } | |
f3a6a60e | 243 | #endif /* CONFIG_CIFS_NFSD_EXPORT */ |
1da177e4 LT |
244 | |
245 | return 0; | |
246 | ||
247 | out_no_root: | |
f96637be | 248 | cifs_dbg(VFS, "%s: get root inode failed\n", __func__); |
1da177e4 LT |
249 | return rc; |
250 | } | |
251 | ||
6d686175 AV |
252 | static void cifs_kill_sb(struct super_block *sb) |
253 | { | |
254 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
5e9c89d4 RS |
255 | struct cifs_tcon *tcon; |
256 | struct cached_fid *cfid; | |
269f67e1 | 257 | |
5e9c89d4 RS |
258 | /* |
259 | * We ned to release all dentries for the cached directories | |
260 | * before we kill the sb. | |
261 | */ | |
269f67e1 RS |
262 | if (cifs_sb->root) { |
263 | dput(cifs_sb->root); | |
264 | cifs_sb->root = NULL; | |
265 | } | |
5e9c89d4 RS |
266 | tcon = cifs_sb_master_tcon(cifs_sb); |
267 | if (tcon) { | |
268 | cfid = &tcon->crfid; | |
269 | mutex_lock(&cfid->fid_mutex); | |
270 | if (cfid->dentry) { | |
271 | ||
272 | dput(cfid->dentry); | |
273 | cfid->dentry = NULL; | |
274 | } | |
275 | mutex_unlock(&cfid->fid_mutex); | |
276 | } | |
269f67e1 | 277 | |
6d686175 | 278 | kill_anon_super(sb); |
98ab494d | 279 | cifs_umount(cifs_sb); |
1da177e4 LT |
280 | } |
281 | ||
282 | static int | |
726c3342 | 283 | cifs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 284 | { |
726c3342 | 285 | struct super_block *sb = dentry->d_sb; |
39da9847 | 286 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
96daf2b0 | 287 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
76ec5e33 | 288 | struct TCP_Server_Info *server = tcon->ses->server; |
6d5786a3 | 289 | unsigned int xid; |
76ec5e33 | 290 | int rc = 0; |
1da177e4 | 291 | |
6d5786a3 | 292 | xid = get_xid(); |
1da177e4 | 293 | |
21ba3845 SF |
294 | if (le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength) > 0) |
295 | buf->f_namelen = | |
296 | le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength); | |
297 | else | |
298 | buf->f_namelen = PATH_MAX; | |
299 | ||
300 | buf->f_fsid.val[0] = tcon->vol_serial_number; | |
301 | /* are using part of create time for more randomness, see man statfs */ | |
302 | buf->f_fsid.val[1] = (int)le64_to_cpu(tcon->vol_create_time); | |
303 | ||
1da177e4 LT |
304 | buf->f_files = 0; /* undefined */ |
305 | buf->f_ffree = 0; /* unlimited */ | |
306 | ||
76ec5e33 | 307 | if (server->ops->queryfs) |
0f060936 | 308 | rc = server->ops->queryfs(xid, tcon, cifs_sb, buf); |
39da9847 | 309 | |
6d5786a3 | 310 | free_xid(xid); |
14302ee3 | 311 | return rc; |
1da177e4 LT |
312 | } |
313 | ||
31742c5a SF |
314 | static long cifs_fallocate(struct file *file, int mode, loff_t off, loff_t len) |
315 | { | |
7119e220 | 316 | struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file); |
31742c5a SF |
317 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
318 | struct TCP_Server_Info *server = tcon->ses->server; | |
319 | ||
320 | if (server->ops->fallocate) | |
321 | return server->ops->fallocate(file, tcon, mode, off, len); | |
322 | ||
323 | return -EOPNOTSUPP; | |
324 | } | |
325 | ||
549c7297 CB |
326 | static int cifs_permission(struct user_namespace *mnt_userns, |
327 | struct inode *inode, int mask) | |
1da177e4 LT |
328 | { |
329 | struct cifs_sb_info *cifs_sb; | |
330 | ||
331 | cifs_sb = CIFS_SB(inode->i_sb); | |
332 | ||
f696a365 MS |
333 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) { |
334 | if ((mask & MAY_EXEC) && !execute_ok(inode)) | |
335 | return -EACCES; | |
336 | else | |
337 | return 0; | |
338 | } else /* file mode might have been restricted at mount time | |
50c2f753 | 339 | on the client (above and beyond ACL on servers) for |
1da177e4 | 340 | servers which do not support setting and viewing mode bits, |
50c2f753 | 341 | so allowing client to check permissions is useful */ |
47291baa | 342 | return generic_permission(&init_user_ns, inode, mask); |
1da177e4 LT |
343 | } |
344 | ||
e18b890b CL |
345 | static struct kmem_cache *cifs_inode_cachep; |
346 | static struct kmem_cache *cifs_req_cachep; | |
347 | static struct kmem_cache *cifs_mid_cachep; | |
e18b890b | 348 | static struct kmem_cache *cifs_sm_req_cachep; |
1da177e4 LT |
349 | mempool_t *cifs_sm_req_poolp; |
350 | mempool_t *cifs_req_poolp; | |
351 | mempool_t *cifs_mid_poolp; | |
352 | ||
353 | static struct inode * | |
354 | cifs_alloc_inode(struct super_block *sb) | |
355 | { | |
356 | struct cifsInodeInfo *cifs_inode; | |
e94b1766 | 357 | cifs_inode = kmem_cache_alloc(cifs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
358 | if (!cifs_inode) |
359 | return NULL; | |
360 | cifs_inode->cifsAttrs = 0x20; /* default */ | |
1da177e4 | 361 | cifs_inode->time = 0; |
b8c32dbb PS |
362 | /* |
363 | * Until the file is open and we have gotten oplock info back from the | |
364 | * server, can not assume caching of file data or metadata. | |
365 | */ | |
c6723628 | 366 | cifs_set_oplock_level(cifs_inode, 0); |
aff8d5ca | 367 | cifs_inode->flags = 0; |
c11f1df5 SP |
368 | spin_lock_init(&cifs_inode->writers_lock); |
369 | cifs_inode->writers = 0; | |
1da177e4 | 370 | cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ |
fbec9ab9 | 371 | cifs_inode->server_eof = 0; |
20054bd6 JL |
372 | cifs_inode->uniqueid = 0; |
373 | cifs_inode->createtime = 0; | |
42873b0a | 374 | cifs_inode->epoch = 0; |
487317c9 | 375 | spin_lock_init(&cifs_inode->open_file_lock); |
fa70b87c | 376 | generate_random_uuid(cifs_inode->lease_key); |
2a38e120 | 377 | |
b8c32dbb PS |
378 | /* |
379 | * Can not set i_flags here - they get immediately overwritten to zero | |
380 | * by the VFS. | |
381 | */ | |
382 | /* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME; */ | |
1da177e4 | 383 | INIT_LIST_HEAD(&cifs_inode->openFileList); |
f45d3416 | 384 | INIT_LIST_HEAD(&cifs_inode->llist); |
c3f207ab RS |
385 | INIT_LIST_HEAD(&cifs_inode->deferred_closes); |
386 | spin_lock_init(&cifs_inode->deferred_lock); | |
1da177e4 LT |
387 | return &cifs_inode->vfs_inode; |
388 | } | |
389 | ||
390 | static void | |
c2e6802e | 391 | cifs_free_inode(struct inode *inode) |
1da177e4 | 392 | { |
c2e6802e | 393 | kmem_cache_free(cifs_inode_cachep, CIFS_I(inode)); |
1da177e4 LT |
394 | } |
395 | ||
9451a9a5 | 396 | static void |
b57922d9 | 397 | cifs_evict_inode(struct inode *inode) |
9451a9a5 | 398 | { |
91b0abe3 | 399 | truncate_inode_pages_final(&inode->i_data); |
dbd5768f | 400 | clear_inode(inode); |
9451a9a5 SJ |
401 | } |
402 | ||
61f98ffd JL |
403 | static void |
404 | cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server) | |
405 | { | |
a9f1b85e PS |
406 | struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr; |
407 | struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr; | |
408 | ||
571d5972 | 409 | seq_puts(s, ",addr="); |
61f98ffd | 410 | |
a9f1b85e | 411 | switch (server->dstaddr.ss_family) { |
61f98ffd | 412 | case AF_INET: |
a9f1b85e | 413 | seq_printf(s, "%pI4", &sa->sin_addr.s_addr); |
61f98ffd JL |
414 | break; |
415 | case AF_INET6: | |
a9f1b85e PS |
416 | seq_printf(s, "%pI6", &sa6->sin6_addr.s6_addr); |
417 | if (sa6->sin6_scope_id) | |
418 | seq_printf(s, "%%%u", sa6->sin6_scope_id); | |
61f98ffd JL |
419 | break; |
420 | default: | |
571d5972 | 421 | seq_puts(s, "(unknown)"); |
61f98ffd | 422 | } |
8339dd32 LL |
423 | if (server->rdma) |
424 | seq_puts(s, ",rdma"); | |
61f98ffd JL |
425 | } |
426 | ||
3e715513 | 427 | static void |
28e11bd8 | 428 | cifs_show_security(struct seq_file *s, struct cifs_ses *ses) |
3e715513 | 429 | { |
eda2116f SF |
430 | if (ses->sectype == Unspecified) { |
431 | if (ses->user_name == NULL) | |
432 | seq_puts(s, ",sec=none"); | |
28e11bd8 | 433 | return; |
eda2116f | 434 | } |
28e11bd8 | 435 | |
571d5972 | 436 | seq_puts(s, ",sec="); |
3e715513 | 437 | |
28e11bd8 | 438 | switch (ses->sectype) { |
3e715513 | 439 | case NTLMv2: |
571d5972 | 440 | seq_puts(s, "ntlmv2"); |
3e715513 | 441 | break; |
3e715513 | 442 | case Kerberos: |
3f6166aa | 443 | seq_puts(s, "krb5"); |
3e715513 JL |
444 | break; |
445 | case RawNTLMSSP: | |
571d5972 | 446 | seq_puts(s, "ntlmssp"); |
3e715513 JL |
447 | break; |
448 | default: | |
449 | /* shouldn't ever happen */ | |
571d5972 | 450 | seq_puts(s, "unknown"); |
3e715513 JL |
451 | break; |
452 | } | |
453 | ||
28e11bd8 | 454 | if (ses->sign) |
571d5972 | 455 | seq_puts(s, "i"); |
3f6166aa PP |
456 | |
457 | if (ses->sectype == Kerberos) | |
458 | seq_printf(s, ",cruid=%u", | |
459 | from_kuid_munged(&init_user_ns, ses->cred_uid)); | |
3e715513 JL |
460 | } |
461 | ||
d06b5056 JL |
462 | static void |
463 | cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb) | |
464 | { | |
571d5972 | 465 | seq_puts(s, ",cache="); |
d06b5056 JL |
466 | |
467 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) | |
571d5972 | 468 | seq_puts(s, "strict"); |
d06b5056 | 469 | else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) |
571d5972 | 470 | seq_puts(s, "none"); |
41e033fe SF |
471 | else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE) |
472 | seq_puts(s, "singleclient"); /* assume only one client access */ | |
83bbfa70 SF |
473 | else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE) |
474 | seq_puts(s, "ro"); /* read only caching assumed */ | |
d06b5056 | 475 | else |
571d5972 | 476 | seq_puts(s, "loose"); |
d06b5056 JL |
477 | } |
478 | ||
653a5efb SF |
479 | /* |
480 | * cifs_show_devname() is used so we show the mount device name with correct | |
481 | * format (e.g. forward slashes vs. back slashes) in /proc/mounts | |
482 | */ | |
483 | static int cifs_show_devname(struct seq_file *m, struct dentry *root) | |
484 | { | |
485 | struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb); | |
af1a3d2b | 486 | char *devname = kstrdup(cifs_sb->ctx->source, GFP_KERNEL); |
653a5efb SF |
487 | |
488 | if (devname == NULL) | |
489 | seq_puts(m, "none"); | |
490 | else { | |
491 | convert_delimiter(devname, '/'); | |
0fc9322a MB |
492 | /* escape all spaces in share names */ |
493 | seq_escape(m, devname, " \t"); | |
653a5efb SF |
494 | kfree(devname); |
495 | } | |
496 | return 0; | |
497 | } | |
498 | ||
1da177e4 LT |
499 | /* |
500 | * cifs_show_options() is for displaying mount options in /proc/mounts. | |
501 | * Not all settable options are displayed but most of the important | |
502 | * ones are. | |
503 | */ | |
504 | static int | |
34c80b1d | 505 | cifs_show_options(struct seq_file *s, struct dentry *root) |
1da177e4 | 506 | { |
34c80b1d | 507 | struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb); |
96daf2b0 | 508 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
3eb9a889 BG |
509 | struct sockaddr *srcaddr; |
510 | srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr; | |
8616e0fc | 511 | |
a068acf2 | 512 | seq_show_option(s, "vers", tcon->ses->server->vals->version_string); |
28e11bd8 | 513 | cifs_show_security(s, tcon->ses); |
d06b5056 | 514 | cifs_show_cache_flavor(s, cifs_sb); |
3e715513 | 515 | |
3e7a02d4 SF |
516 | if (tcon->no_lease) |
517 | seq_puts(s, ",nolease"); | |
9ccecae8 | 518 | if (cifs_sb->ctx->multiuser) |
571d5972 | 519 | seq_puts(s, ",multiuser"); |
8727c8a8 | 520 | else if (tcon->ses->user_name) |
a068acf2 | 521 | seq_show_option(s, "username", tcon->ses->user_name); |
29e07c82 | 522 | |
e55954a5 | 523 | if (tcon->ses->domainName && tcon->ses->domainName[0] != 0) |
a068acf2 | 524 | seq_show_option(s, "domain", tcon->ses->domainName); |
8616e0fc | 525 | |
3eb9a889 BG |
526 | if (srcaddr->sa_family != AF_UNSPEC) { |
527 | struct sockaddr_in *saddr4; | |
528 | struct sockaddr_in6 *saddr6; | |
529 | saddr4 = (struct sockaddr_in *)srcaddr; | |
530 | saddr6 = (struct sockaddr_in6 *)srcaddr; | |
531 | if (srcaddr->sa_family == AF_INET6) | |
532 | seq_printf(s, ",srcaddr=%pI6c", | |
533 | &saddr6->sin6_addr); | |
534 | else if (srcaddr->sa_family == AF_INET) | |
535 | seq_printf(s, ",srcaddr=%pI4", | |
536 | &saddr4->sin_addr.s_addr); | |
537 | else | |
538 | seq_printf(s, ",srcaddr=BAD-AF:%i", | |
539 | (int)(srcaddr->sa_family)); | |
540 | } | |
541 | ||
1f68233c | 542 | seq_printf(s, ",uid=%u", |
8401e936 | 543 | from_kuid_munged(&init_user_ns, cifs_sb->ctx->linux_uid)); |
340481a3 | 544 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
571d5972 | 545 | seq_puts(s, ",forceuid"); |
4486d6ed | 546 | else |
571d5972 | 547 | seq_puts(s, ",noforceuid"); |
340481a3 | 548 | |
1f68233c | 549 | seq_printf(s, ",gid=%u", |
8401e936 | 550 | from_kgid_munged(&init_user_ns, cifs_sb->ctx->linux_gid)); |
340481a3 | 551 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
571d5972 | 552 | seq_puts(s, ",forcegid"); |
4486d6ed | 553 | else |
571d5972 | 554 | seq_puts(s, ",noforcegid"); |
8616e0fc | 555 | |
61f98ffd | 556 | cifs_show_address(s, tcon->ses->server); |
1da177e4 | 557 | |
8616e0fc | 558 | if (!tcon->unix_ext) |
5206efd6 | 559 | seq_printf(s, ",file_mode=0%ho,dir_mode=0%ho", |
8401e936 RS |
560 | cifs_sb->ctx->file_mode, |
561 | cifs_sb->ctx->dir_mode); | |
7c7ee628 RS |
562 | if (cifs_sb->ctx->iocharset) |
563 | seq_printf(s, ",iocharset=%s", cifs_sb->ctx->iocharset); | |
8616e0fc | 564 | if (tcon->seal) |
571d5972 | 565 | seq_puts(s, ",seal"); |
ec57010a SF |
566 | else if (tcon->ses->server->ignore_signature) |
567 | seq_puts(s, ",signloosely"); | |
8616e0fc | 568 | if (tcon->nocase) |
571d5972 | 569 | seq_puts(s, ",nocase"); |
82e9367c SF |
570 | if (tcon->nodelete) |
571 | seq_puts(s, ",nodelete"); | |
c8b6ac1a K |
572 | if (tcon->local_lease) |
573 | seq_puts(s, ",locallease"); | |
8616e0fc | 574 | if (tcon->retry) |
571d5972 | 575 | seq_puts(s, ",hard"); |
6e82e929 RS |
576 | else |
577 | seq_puts(s, ",soft"); | |
f16dfa7c SF |
578 | if (tcon->use_persistent) |
579 | seq_puts(s, ",persistenthandles"); | |
592fafe6 SF |
580 | else if (tcon->use_resilient) |
581 | seq_puts(s, ",resilienthandles"); | |
b326614e SF |
582 | if (tcon->posix_extensions) |
583 | seq_puts(s, ",posix"); | |
584 | else if (tcon->unix_ext) | |
585 | seq_puts(s, ",unix"); | |
586 | else | |
587 | seq_puts(s, ",nounix"); | |
8393072b AA |
588 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS) |
589 | seq_puts(s, ",nodfs"); | |
8616e0fc | 590 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) |
571d5972 | 591 | seq_puts(s, ",posixpaths"); |
8616e0fc | 592 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) |
571d5972 | 593 | seq_puts(s, ",setuids"); |
95932655 SF |
594 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL) |
595 | seq_puts(s, ",idsfromsid"); | |
8616e0fc | 596 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) |
571d5972 | 597 | seq_puts(s, ",serverino"); |
d4ffff1f | 598 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD) |
571d5972 | 599 | seq_puts(s, ",rwpidforward"); |
d4ffff1f | 600 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) |
571d5972 | 601 | seq_puts(s, ",forcemand"); |
8616e0fc | 602 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
571d5972 | 603 | seq_puts(s, ",nouser_xattr"); |
8616e0fc | 604 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR) |
571d5972 | 605 | seq_puts(s, ",mapchars"); |
bc8ebdc4 NA |
606 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR) |
607 | seq_puts(s, ",mapposix"); | |
8616e0fc | 608 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) |
571d5972 | 609 | seq_puts(s, ",sfu"); |
8616e0fc | 610 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
571d5972 | 611 | seq_puts(s, ",nobrl"); |
3d4ef9a1 SF |
612 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_HANDLE_CACHE) |
613 | seq_puts(s, ",nohandlecache"); | |
412094a8 SF |
614 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID) |
615 | seq_puts(s, ",modefromsid"); | |
8616e0fc | 616 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) |
571d5972 | 617 | seq_puts(s, ",cifsacl"); |
8616e0fc | 618 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) |
571d5972 | 619 | seq_puts(s, ",dynperm"); |
1751e8a6 | 620 | if (root->d_sb->s_flags & SB_POSIXACL) |
571d5972 | 621 | seq_puts(s, ",acl"); |
736a3320 | 622 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) |
571d5972 | 623 | seq_puts(s, ",mfsymlinks"); |
476428f8 | 624 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE) |
571d5972 | 625 | seq_puts(s, ",fsc"); |
71c424ba | 626 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC) |
571d5972 | 627 | seq_puts(s, ",nostrictsync"); |
71c424ba | 628 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
571d5972 | 629 | seq_puts(s, ",noperm"); |
3c7c87fd | 630 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID) |
1f68233c EB |
631 | seq_printf(s, ",backupuid=%u", |
632 | from_kuid_munged(&init_user_ns, | |
8401e936 | 633 | cifs_sb->ctx->backupuid)); |
3c7c87fd | 634 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) |
1f68233c EB |
635 | seq_printf(s, ",backupgid=%u", |
636 | from_kgid_munged(&init_user_ns, | |
8401e936 | 637 | cifs_sb->ctx->backupgid)); |
8616e0fc | 638 | |
0c2b5f7c SF |
639 | seq_printf(s, ",rsize=%u", cifs_sb->ctx->rsize); |
640 | seq_printf(s, ",wsize=%u", cifs_sb->ctx->wsize); | |
641 | seq_printf(s, ",bsize=%u", cifs_sb->ctx->bsize); | |
b8d64f8c SF |
642 | if (cifs_sb->ctx->rasize) |
643 | seq_printf(s, ",rasize=%u", cifs_sb->ctx->rasize); | |
563317ec SF |
644 | if (tcon->ses->server->min_offload) |
645 | seq_printf(s, ",esize=%u", tcon->ses->server->min_offload); | |
adfeb3e0 SF |
646 | seq_printf(s, ",echo_interval=%lu", |
647 | tcon->ses->server->echo_interval / HZ); | |
dc179268 SF |
648 | |
649 | /* Only display max_credits if it was overridden on mount */ | |
650 | if (tcon->ses->server->max_credits != SMB2_MAX_CREDITS_AVAILABLE) | |
651 | seq_printf(s, ",max_credits=%u", tcon->ses->server->max_credits); | |
652 | ||
8a69e96e SF |
653 | if (tcon->snapshot_time) |
654 | seq_printf(s, ",snapshot=%llu", tcon->snapshot_time); | |
ca567eb2 SF |
655 | if (tcon->handle_timeout) |
656 | seq_printf(s, ",handletimeout=%u", tcon->handle_timeout); | |
57804646 SF |
657 | |
658 | /* | |
659 | * Display file and directory attribute timeout in seconds. | |
660 | * If file and directory attribute timeout the same then actimeo | |
661 | * was likely specified on mount | |
662 | */ | |
663 | if (cifs_sb->ctx->acdirmax == cifs_sb->ctx->acregmax) | |
664 | seq_printf(s, ",actimeo=%lu", cifs_sb->ctx->acregmax / HZ); | |
665 | else { | |
666 | seq_printf(s, ",acdirmax=%lu", cifs_sb->ctx->acdirmax / HZ); | |
667 | seq_printf(s, ",acregmax=%lu", cifs_sb->ctx->acregmax / HZ); | |
668 | } | |
8616e0fc | 669 | |
bcc88801 | 670 | if (tcon->ses->chan_max > 1) |
7866c177 | 671 | seq_printf(s, ",multichannel,max_channels=%zu", |
bcc88801 AA |
672 | tcon->ses->chan_max); |
673 | ||
0ac4e291 SC |
674 | if (tcon->use_witness) |
675 | seq_puts(s, ",witness"); | |
0ac4e291 | 676 | |
1da177e4 LT |
677 | return 0; |
678 | } | |
679 | ||
42faad99 | 680 | static void cifs_umount_begin(struct super_block *sb) |
68058e75 | 681 | { |
42faad99 | 682 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
96daf2b0 | 683 | struct cifs_tcon *tcon; |
68058e75 | 684 | |
4523cc30 | 685 | if (cifs_sb == NULL) |
9e2e85f8 SF |
686 | return; |
687 | ||
0d424ad0 | 688 | tcon = cifs_sb_master_tcon(cifs_sb); |
f1987b44 | 689 | |
3f9bcca7 | 690 | spin_lock(&cifs_tcp_ses_lock); |
ad8034f1 SF |
691 | if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) { |
692 | /* we have other mounts to same share or we have | |
693 | already tried to force umount this and woken up | |
694 | all waiting network requests, nothing to do */ | |
3f9bcca7 | 695 | spin_unlock(&cifs_tcp_ses_lock); |
ad8034f1 SF |
696 | return; |
697 | } else if (tcon->tc_count == 1) | |
5e1253b5 | 698 | tcon->tidStatus = CifsExiting; |
3f9bcca7 | 699 | spin_unlock(&cifs_tcp_ses_lock); |
5e1253b5 | 700 | |
3a5ff61c | 701 | /* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */ |
7b7abfe3 | 702 | /* cancel_notify_requests(tcon); */ |
50c2f753 | 703 | if (tcon->ses && tcon->ses->server) { |
f96637be | 704 | cifs_dbg(FYI, "wake up tasks now - umount begin not complete\n"); |
9e2e85f8 | 705 | wake_up_all(&tcon->ses->server->request_q); |
6ab16d24 SF |
706 | wake_up_all(&tcon->ses->server->response_q); |
707 | msleep(1); /* yield */ | |
708 | /* we have to kick the requests once more */ | |
709 | wake_up_all(&tcon->ses->server->response_q); | |
710 | msleep(1); | |
5e1253b5 | 711 | } |
68058e75 SF |
712 | |
713 | return; | |
714 | } | |
68058e75 | 715 | |
bf97d287 | 716 | #ifdef CONFIG_CIFS_STATS2 |
64132379 | 717 | static int cifs_show_stats(struct seq_file *s, struct dentry *root) |
bf97d287 SF |
718 | { |
719 | /* BB FIXME */ | |
720 | return 0; | |
721 | } | |
722 | #endif | |
723 | ||
45321ac5 | 724 | static int cifs_drop_inode(struct inode *inode) |
12420ac3 JL |
725 | { |
726 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
727 | ||
45321ac5 AV |
728 | /* no serverino => unconditional eviction */ |
729 | return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) || | |
730 | generic_drop_inode(inode); | |
12420ac3 JL |
731 | } |
732 | ||
ee9b6d61 | 733 | static const struct super_operations cifs_super_ops = { |
1da177e4 LT |
734 | .statfs = cifs_statfs, |
735 | .alloc_inode = cifs_alloc_inode, | |
c2e6802e | 736 | .free_inode = cifs_free_inode, |
12420ac3 | 737 | .drop_inode = cifs_drop_inode, |
b57922d9 | 738 | .evict_inode = cifs_evict_inode, |
653a5efb SF |
739 | /* .show_path = cifs_show_path, */ /* Would we ever need show path? */ |
740 | .show_devname = cifs_show_devname, | |
12420ac3 JL |
741 | /* .delete_inode = cifs_delete_inode, */ /* Do not need above |
742 | function unless later we add lazy close of inodes or unless the | |
50c2f753 SF |
743 | kernel forgets to call us with the same number of releases (closes) |
744 | as opens */ | |
1da177e4 | 745 | .show_options = cifs_show_options, |
7b7abfe3 | 746 | .umount_begin = cifs_umount_begin, |
bf97d287 | 747 | #ifdef CONFIG_CIFS_STATS2 |
f46d3e11 | 748 | .show_stats = cifs_show_stats, |
bf97d287 | 749 | #endif |
1da177e4 LT |
750 | }; |
751 | ||
f87d39d9 SF |
752 | /* |
753 | * Get root dentry from superblock according to prefix path mount option. | |
754 | * Return dentry with refcount + 1 on success and NULL otherwise. | |
755 | */ | |
756 | static struct dentry * | |
3fa1c6d1 | 757 | cifs_get_root(struct smb3_fs_context *ctx, struct super_block *sb) |
f87d39d9 | 758 | { |
fec11dd9 | 759 | struct dentry *dentry; |
f87d39d9 | 760 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
fec11dd9 AV |
761 | char *full_path = NULL; |
762 | char *s, *p; | |
f87d39d9 SF |
763 | char sep; |
764 | ||
348c1bfa SP |
765 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) |
766 | return dget(sb->s_root); | |
767 | ||
3fa1c6d1 | 768 | full_path = cifs_build_path_to_root(ctx, cifs_sb, |
374402a2 | 769 | cifs_sb_master_tcon(cifs_sb), 0); |
f87d39d9 | 770 | if (full_path == NULL) |
9403c9c5 | 771 | return ERR_PTR(-ENOMEM); |
f87d39d9 | 772 | |
f96637be | 773 | cifs_dbg(FYI, "Get root dentry for %s\n", full_path); |
f87d39d9 | 774 | |
f87d39d9 | 775 | sep = CIFS_DIR_SEP(cifs_sb); |
fec11dd9 AV |
776 | dentry = dget(sb->s_root); |
777 | p = s = full_path; | |
778 | ||
779 | do { | |
2b0143b5 | 780 | struct inode *dir = d_inode(dentry); |
fec11dd9 AV |
781 | struct dentry *child; |
782 | ||
ce2ac521 JL |
783 | if (!S_ISDIR(dir->i_mode)) { |
784 | dput(dentry); | |
785 | dentry = ERR_PTR(-ENOTDIR); | |
786 | break; | |
787 | } | |
5b980b01 | 788 | |
fec11dd9 AV |
789 | /* skip separators */ |
790 | while (*s == sep) | |
791 | s++; | |
792 | if (!*s) | |
793 | break; | |
794 | p = s++; | |
795 | /* next separator */ | |
796 | while (*s && *s != sep) | |
797 | s++; | |
798 | ||
6c2d4798 | 799 | child = lookup_positive_unlocked(p, dentry, s - p); |
fec11dd9 AV |
800 | dput(dentry); |
801 | dentry = child; | |
802 | } while (!IS_ERR(dentry)); | |
f87d39d9 | 803 | kfree(full_path); |
fec11dd9 | 804 | return dentry; |
f87d39d9 SF |
805 | } |
806 | ||
ee01a14d AV |
807 | static int cifs_set_super(struct super_block *sb, void *data) |
808 | { | |
809 | struct cifs_mnt_data *mnt_data = data; | |
810 | sb->s_fs_info = mnt_data->cifs_sb; | |
811 | return set_anon_super(sb, NULL); | |
812 | } | |
813 | ||
24e0a1ef | 814 | struct dentry * |
c7c137b9 | 815 | cifs_smb3_do_mount(struct file_system_type *fs_type, |
24e0a1ef | 816 | int flags, struct smb3_fs_context *old_ctx) |
1da177e4 LT |
817 | { |
818 | int rc; | |
db719222 | 819 | struct super_block *sb; |
d17abdf7 | 820 | struct cifs_sb_info *cifs_sb = NULL; |
25c7f41e | 821 | struct cifs_mnt_data mnt_data; |
724d9f1c | 822 | struct dentry *root; |
1da177e4 | 823 | |
8c1beb98 SF |
824 | /* |
825 | * Prints in Kernel / CIFS log the attempted mount operation | |
826 | * If CIFS_DEBUG && cifs_FYI | |
827 | */ | |
f80eaedd | 828 | if (cifsFYI) |
24e0a1ef | 829 | cifs_dbg(FYI, "Devname: %s flags: %d\n", old_ctx->UNC, flags); |
f80eaedd | 830 | else |
24e0a1ef RS |
831 | cifs_info("Attempting to mount %s\n", old_ctx->UNC); |
832 | ||
d17abdf7 RS |
833 | cifs_sb = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL); |
834 | if (cifs_sb == NULL) { | |
835 | root = ERR_PTR(-ENOMEM); | |
24e0a1ef RS |
836 | goto out; |
837 | } | |
1da177e4 | 838 | |
d17abdf7 RS |
839 | cifs_sb->ctx = kzalloc(sizeof(struct smb3_fs_context), GFP_KERNEL); |
840 | if (!cifs_sb->ctx) { | |
841 | root = ERR_PTR(-ENOMEM); | |
842 | goto out; | |
843 | } | |
844 | rc = smb3_fs_context_dup(cifs_sb->ctx, old_ctx); | |
24e0a1ef RS |
845 | if (rc) { |
846 | root = ERR_PTR(rc); | |
847 | goto out; | |
848 | } | |
724d9f1c | 849 | |
5c1acf3f | 850 | rc = cifs_setup_volume_info(cifs_sb->ctx, NULL, NULL); |
d17abdf7 RS |
851 | if (rc) { |
852 | root = ERR_PTR(rc); | |
853 | goto out; | |
724d9f1c PS |
854 | } |
855 | ||
51acd208 | 856 | rc = cifs_setup_cifs_sb(cifs_sb); |
4214ebf4 SP |
857 | if (rc) { |
858 | root = ERR_PTR(rc); | |
d17abdf7 | 859 | goto out; |
a6b5058f AA |
860 | } |
861 | ||
d17abdf7 | 862 | rc = cifs_mount(cifs_sb, cifs_sb->ctx); |
97d1152a | 863 | if (rc) { |
1751e8a6 | 864 | if (!(flags & SB_SILENT)) |
f96637be JP |
865 | cifs_dbg(VFS, "cifs_mount failed w/return code = %d\n", |
866 | rc); | |
97d1152a | 867 | root = ERR_PTR(rc); |
d17abdf7 | 868 | goto out; |
97d1152a AV |
869 | } |
870 | ||
d17abdf7 | 871 | mnt_data.ctx = cifs_sb->ctx; |
25c7f41e PS |
872 | mnt_data.cifs_sb = cifs_sb; |
873 | mnt_data.flags = flags; | |
874 | ||
9249e17f | 875 | /* BB should we make this contingent on mount parm? */ |
1751e8a6 | 876 | flags |= SB_NODIRATIME | SB_NOATIME; |
9249e17f DH |
877 | |
878 | sb = sget(fs_type, cifs_match_super, cifs_set_super, flags, &mnt_data); | |
724d9f1c | 879 | if (IS_ERR(sb)) { |
724d9f1c | 880 | root = ERR_CAST(sb); |
97d1152a | 881 | cifs_umount(cifs_sb); |
6cf5abbf | 882 | cifs_sb = NULL; |
d757d71b | 883 | goto out; |
724d9f1c | 884 | } |
1da177e4 | 885 | |
ee01a14d | 886 | if (sb->s_root) { |
f96637be | 887 | cifs_dbg(FYI, "Use existing superblock\n"); |
97d1152a | 888 | cifs_umount(cifs_sb); |
6cf5abbf | 889 | cifs_sb = NULL; |
5c4f1ad7 | 890 | } else { |
5c4f1ad7 AV |
891 | rc = cifs_read_super(sb); |
892 | if (rc) { | |
893 | root = ERR_PTR(rc); | |
894 | goto out_super; | |
895 | } | |
b2e5cd33 | 896 | |
1751e8a6 | 897 | sb->s_flags |= SB_ACTIVE; |
1da177e4 | 898 | } |
724d9f1c | 899 | |
6cf5abbf | 900 | root = cifs_get_root(cifs_sb ? cifs_sb->ctx : old_ctx, sb); |
9403c9c5 | 901 | if (IS_ERR(root)) |
f87d39d9 | 902 | goto out_super; |
25c7f41e | 903 | |
269f67e1 RS |
904 | if (cifs_sb) |
905 | cifs_sb->root = dget(root); | |
906 | ||
f96637be | 907 | cifs_dbg(FYI, "dentry root is: %p\n", root); |
d17abdf7 | 908 | return root; |
724d9f1c | 909 | |
641a58d6 | 910 | out_super: |
641a58d6 | 911 | deactivate_locked_super(sb); |
641a58d6 | 912 | out: |
d17abdf7 RS |
913 | if (cifs_sb) { |
914 | kfree(cifs_sb->prepath); | |
c741cba2 | 915 | smb3_cleanup_fs_context(cifs_sb->ctx); |
d17abdf7 RS |
916 | kfree(cifs_sb); |
917 | } | |
724d9f1c | 918 | return root; |
1da177e4 LT |
919 | } |
920 | ||
c7c137b9 | 921 | |
08bc0353 JL |
922 | static ssize_t |
923 | cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter) | |
924 | { | |
925 | ssize_t rc; | |
926 | struct inode *inode = file_inode(iocb->ki_filp); | |
927 | ||
882137c4 RL |
928 | if (iocb->ki_filp->f_flags & O_DIRECT) |
929 | return cifs_user_readv(iocb, iter); | |
930 | ||
08bc0353 JL |
931 | rc = cifs_revalidate_mapping(inode); |
932 | if (rc) | |
933 | return rc; | |
934 | ||
935 | return generic_file_read_iter(iocb, iter); | |
936 | } | |
937 | ||
3dae8750 | 938 | static ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
1da177e4 | 939 | { |
496ad9aa | 940 | struct inode *inode = file_inode(iocb->ki_filp); |
c11f1df5 | 941 | struct cifsInodeInfo *cinode = CIFS_I(inode); |
1da177e4 | 942 | ssize_t written; |
72432ffc | 943 | int rc; |
1da177e4 | 944 | |
882137c4 RL |
945 | if (iocb->ki_filp->f_flags & O_DIRECT) { |
946 | written = cifs_user_writev(iocb, from); | |
947 | if (written > 0 && CIFS_CACHE_READ(cinode)) { | |
948 | cifs_zap_mapping(inode); | |
949 | cifs_dbg(FYI, | |
950 | "Set no oplock for inode=%p after a write operation\n", | |
951 | inode); | |
952 | cinode->oplock = 0; | |
953 | } | |
954 | return written; | |
955 | } | |
956 | ||
c11f1df5 SP |
957 | written = cifs_get_writer(cinode); |
958 | if (written) | |
959 | return written; | |
960 | ||
3dae8750 | 961 | written = generic_file_write_iter(iocb, from); |
72432ffc | 962 | |
18cceb6a | 963 | if (CIFS_CACHE_WRITE(CIFS_I(inode))) |
c11f1df5 | 964 | goto out; |
72432ffc PS |
965 | |
966 | rc = filemap_fdatawrite(inode->i_mapping); | |
967 | if (rc) | |
3dae8750 | 968 | cifs_dbg(FYI, "cifs_file_write_iter: %d rc on %p inode\n", |
f96637be | 969 | rc, inode); |
72432ffc | 970 | |
c11f1df5 SP |
971 | out: |
972 | cifs_put_writer(cinode); | |
1da177e4 LT |
973 | return written; |
974 | } | |
975 | ||
965c8e59 | 976 | static loff_t cifs_llseek(struct file *file, loff_t offset, int whence) |
c32a0b68 | 977 | { |
dece44e3 RS |
978 | struct cifsFileInfo *cfile = file->private_data; |
979 | struct cifs_tcon *tcon; | |
980 | ||
06222e49 | 981 | /* |
965c8e59 | 982 | * whence == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate |
06222e49 JB |
983 | * the cached file length |
984 | */ | |
965c8e59 | 985 | if (whence != SEEK_SET && whence != SEEK_CUR) { |
6feb9891 | 986 | int rc; |
496ad9aa | 987 | struct inode *inode = file_inode(file); |
6feb9891 PS |
988 | |
989 | /* | |
990 | * We need to be sure that all dirty pages are written and the | |
991 | * server has the newest file length. | |
992 | */ | |
18cceb6a | 993 | if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping && |
6feb9891 PS |
994 | inode->i_mapping->nrpages != 0) { |
995 | rc = filemap_fdatawait(inode->i_mapping); | |
156ecb2d SF |
996 | if (rc) { |
997 | mapping_set_error(inode->i_mapping, rc); | |
998 | return rc; | |
999 | } | |
6feb9891 PS |
1000 | } |
1001 | /* | |
1002 | * Some applications poll for the file length in this strange | |
1003 | * way so we must seek to end on non-oplocked files by | |
1004 | * setting the revalidate time to zero. | |
1005 | */ | |
1006 | CIFS_I(inode)->time = 0; | |
1007 | ||
1008 | rc = cifs_revalidate_file_attr(file); | |
1009 | if (rc < 0) | |
1010 | return (loff_t)rc; | |
c32a0b68 | 1011 | } |
dece44e3 RS |
1012 | if (cfile && cfile->tlink) { |
1013 | tcon = tlink_tcon(cfile->tlink); | |
1014 | if (tcon->ses->server->ops->llseek) | |
1015 | return tcon->ses->server->ops->llseek(file, tcon, | |
1016 | offset, whence); | |
1017 | } | |
965c8e59 | 1018 | return generic_file_llseek(file, offset, whence); |
c32a0b68 SF |
1019 | } |
1020 | ||
e6f5c789 JL |
1021 | static int |
1022 | cifs_setlease(struct file *file, long arg, struct file_lock **lease, void **priv) | |
84210e91 | 1023 | { |
18cceb6a PS |
1024 | /* |
1025 | * Note that this is called by vfs setlease with i_lock held to | |
1026 | * protect *lease from going away. | |
1027 | */ | |
496ad9aa | 1028 | struct inode *inode = file_inode(file); |
ba00ba64 | 1029 | struct cifsFileInfo *cfile = file->private_data; |
84210e91 SF |
1030 | |
1031 | if (!(S_ISREG(inode->i_mode))) | |
1032 | return -EINVAL; | |
1033 | ||
02440806 JL |
1034 | /* Check if file is oplocked if this is request for new lease */ |
1035 | if (arg == F_UNLCK || | |
1036 | ((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) || | |
18cceb6a | 1037 | ((arg == F_WRLCK) && CIFS_CACHE_WRITE(CIFS_I(inode)))) |
e6f5c789 | 1038 | return generic_setlease(file, arg, lease, priv); |
13cfb733 | 1039 | else if (tlink_tcon(cfile->tlink)->local_lease && |
18cceb6a PS |
1040 | !CIFS_CACHE_READ(CIFS_I(inode))) |
1041 | /* | |
1042 | * If the server claims to support oplock on this file, then we | |
1043 | * still need to check oplock even if the local_lease mount | |
1044 | * option is set, but there are servers which do not support | |
1045 | * oplock for which this mount option may be useful if the user | |
1046 | * knows that the file won't be changed on the server by anyone | |
1047 | * else. | |
1048 | */ | |
e6f5c789 | 1049 | return generic_setlease(file, arg, lease, priv); |
51ee4b84 | 1050 | else |
84210e91 SF |
1051 | return -EAGAIN; |
1052 | } | |
84210e91 | 1053 | |
e6ab1582 | 1054 | struct file_system_type cifs_fs_type = { |
1da177e4 LT |
1055 | .owner = THIS_MODULE, |
1056 | .name = "cifs", | |
24e0a1ef RS |
1057 | .init_fs_context = smb3_init_fs_context, |
1058 | .parameters = smb3_fs_parameters, | |
6d686175 | 1059 | .kill_sb = cifs_kill_sb, |
c7e9f78f | 1060 | .fs_flags = FS_RENAME_DOES_D_MOVE, |
1da177e4 | 1061 | }; |
3e64fe5b | 1062 | MODULE_ALIAS_FS("cifs"); |
49218b4f SF |
1063 | |
1064 | static struct file_system_type smb3_fs_type = { | |
1065 | .owner = THIS_MODULE, | |
1066 | .name = "smb3", | |
24e0a1ef RS |
1067 | .init_fs_context = smb3_init_fs_context, |
1068 | .parameters = smb3_fs_parameters, | |
49218b4f | 1069 | .kill_sb = cifs_kill_sb, |
c7e9f78f | 1070 | .fs_flags = FS_RENAME_DOES_D_MOVE, |
49218b4f SF |
1071 | }; |
1072 | MODULE_ALIAS_FS("smb3"); | |
1073 | MODULE_ALIAS("smb3"); | |
1074 | ||
754661f1 | 1075 | const struct inode_operations cifs_dir_inode_ops = { |
1da177e4 | 1076 | .create = cifs_create, |
d2c12719 | 1077 | .atomic_open = cifs_atomic_open, |
1da177e4 LT |
1078 | .lookup = cifs_lookup, |
1079 | .getattr = cifs_getattr, | |
1080 | .unlink = cifs_unlink, | |
1081 | .link = cifs_hardlink, | |
1082 | .mkdir = cifs_mkdir, | |
1083 | .rmdir = cifs_rmdir, | |
2773bf00 | 1084 | .rename = cifs_rename2, |
1da177e4 | 1085 | .permission = cifs_permission, |
1da177e4 LT |
1086 | .setattr = cifs_setattr, |
1087 | .symlink = cifs_symlink, | |
1088 | .mknod = cifs_mknod, | |
1da177e4 | 1089 | .listxattr = cifs_listxattr, |
1da177e4 LT |
1090 | }; |
1091 | ||
754661f1 | 1092 | const struct inode_operations cifs_file_inode_ops = { |
1da177e4 | 1093 | .setattr = cifs_setattr, |
48a77aa7 | 1094 | .getattr = cifs_getattr, |
1da177e4 | 1095 | .permission = cifs_permission, |
1da177e4 | 1096 | .listxattr = cifs_listxattr, |
2f3ebaba | 1097 | .fiemap = cifs_fiemap, |
1da177e4 LT |
1098 | }; |
1099 | ||
754661f1 | 1100 | const struct inode_operations cifs_symlink_inode_ops = { |
6b255391 | 1101 | .get_link = cifs_get_link, |
1da177e4 | 1102 | .permission = cifs_permission, |
1da177e4 | 1103 | .listxattr = cifs_listxattr, |
1da177e4 LT |
1104 | }; |
1105 | ||
42ec3d4c DW |
1106 | static loff_t cifs_remap_file_range(struct file *src_file, loff_t off, |
1107 | struct file *dst_file, loff_t destoff, loff_t len, | |
2e5dfc99 | 1108 | unsigned int remap_flags) |
04b38d60 CH |
1109 | { |
1110 | struct inode *src_inode = file_inode(src_file); | |
1111 | struct inode *target_inode = file_inode(dst_file); | |
1112 | struct cifsFileInfo *smb_file_src = src_file->private_data; | |
8c6c9bed CIK |
1113 | struct cifsFileInfo *smb_file_target; |
1114 | struct cifs_tcon *target_tcon; | |
04b38d60 CH |
1115 | unsigned int xid; |
1116 | int rc; | |
1117 | ||
b073a080 | 1118 | if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY)) |
2e5dfc99 DW |
1119 | return -EINVAL; |
1120 | ||
04b38d60 CH |
1121 | cifs_dbg(FYI, "clone range\n"); |
1122 | ||
1123 | xid = get_xid(); | |
1124 | ||
1125 | if (!src_file->private_data || !dst_file->private_data) { | |
1126 | rc = -EBADF; | |
1127 | cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n"); | |
1128 | goto out; | |
1129 | } | |
1130 | ||
8c6c9bed CIK |
1131 | smb_file_target = dst_file->private_data; |
1132 | target_tcon = tlink_tcon(smb_file_target->tlink); | |
1133 | ||
04b38d60 CH |
1134 | /* |
1135 | * Note: cifs case is easier than btrfs since server responsible for | |
1136 | * checks for proper open modes and file type and if it wants | |
1137 | * server could even support copy of range where source = target | |
1138 | */ | |
1139 | lock_two_nondirectories(target_inode, src_inode); | |
1140 | ||
1141 | if (len == 0) | |
1142 | len = src_inode->i_size - off; | |
1143 | ||
1144 | cifs_dbg(FYI, "about to flush pages\n"); | |
1145 | /* should we flush first and last page first */ | |
1146 | truncate_inode_pages_range(&target_inode->i_data, destoff, | |
09cbfeaf | 1147 | PAGE_ALIGN(destoff + len)-1); |
04b38d60 CH |
1148 | |
1149 | if (target_tcon->ses->server->ops->duplicate_extents) | |
1150 | rc = target_tcon->ses->server->ops->duplicate_extents(xid, | |
1151 | smb_file_src, smb_file_target, off, len, destoff); | |
1152 | else | |
1153 | rc = -EOPNOTSUPP; | |
1154 | ||
1155 | /* force revalidate of size and timestamps of target file now | |
1156 | that target is updated on the server */ | |
1157 | CIFS_I(target_inode)->time = 0; | |
04b38d60 CH |
1158 | /* although unlocking in the reverse order from locking is not |
1159 | strictly necessary here it is a little cleaner to be consistent */ | |
1160 | unlock_two_nondirectories(src_inode, target_inode); | |
1161 | out: | |
1162 | free_xid(xid); | |
42ec3d4c | 1163 | return rc < 0 ? rc : len; |
04b38d60 CH |
1164 | } |
1165 | ||
620d8745 SP |
1166 | ssize_t cifs_file_copychunk_range(unsigned int xid, |
1167 | struct file *src_file, loff_t off, | |
1168 | struct file *dst_file, loff_t destoff, | |
1169 | size_t len, unsigned int flags) | |
1170 | { | |
1171 | struct inode *src_inode = file_inode(src_file); | |
1172 | struct inode *target_inode = file_inode(dst_file); | |
1173 | struct cifsFileInfo *smb_file_src; | |
1174 | struct cifsFileInfo *smb_file_target; | |
1175 | struct cifs_tcon *src_tcon; | |
1176 | struct cifs_tcon *target_tcon; | |
1177 | ssize_t rc; | |
1178 | ||
1179 | cifs_dbg(FYI, "copychunk range\n"); | |
1180 | ||
620d8745 SP |
1181 | if (!src_file->private_data || !dst_file->private_data) { |
1182 | rc = -EBADF; | |
1183 | cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n"); | |
1184 | goto out; | |
1185 | } | |
1186 | ||
1187 | rc = -EXDEV; | |
1188 | smb_file_target = dst_file->private_data; | |
1189 | smb_file_src = src_file->private_data; | |
1190 | src_tcon = tlink_tcon(smb_file_src->tlink); | |
1191 | target_tcon = tlink_tcon(smb_file_target->tlink); | |
1192 | ||
1193 | if (src_tcon->ses != target_tcon->ses) { | |
1194 | cifs_dbg(VFS, "source and target of copy not on same server\n"); | |
1195 | goto out; | |
1196 | } | |
1197 | ||
bf3c90ee AG |
1198 | rc = -EOPNOTSUPP; |
1199 | if (!target_tcon->ses->server->ops->copychunk_range) | |
1200 | goto out; | |
1201 | ||
620d8745 SP |
1202 | /* |
1203 | * Note: cifs case is easier than btrfs since server responsible for | |
1204 | * checks for proper open modes and file type and if it wants | |
1205 | * server could even support copy of range where source = target | |
1206 | */ | |
1207 | lock_two_nondirectories(target_inode, src_inode); | |
1208 | ||
1209 | cifs_dbg(FYI, "about to flush pages\n"); | |
1210 | /* should we flush first and last page first */ | |
1211 | truncate_inode_pages(&target_inode->i_data, 0); | |
1212 | ||
bf3c90ee AG |
1213 | rc = file_modified(dst_file); |
1214 | if (!rc) | |
620d8745 SP |
1215 | rc = target_tcon->ses->server->ops->copychunk_range(xid, |
1216 | smb_file_src, smb_file_target, off, len, destoff); | |
bf3c90ee AG |
1217 | |
1218 | file_accessed(src_file); | |
620d8745 SP |
1219 | |
1220 | /* force revalidate of size and timestamps of target file now | |
1221 | * that target is updated on the server | |
1222 | */ | |
1223 | CIFS_I(target_inode)->time = 0; | |
1224 | /* although unlocking in the reverse order from locking is not | |
1225 | * strictly necessary here it is a little cleaner to be consistent | |
1226 | */ | |
1227 | unlock_two_nondirectories(src_inode, target_inode); | |
1228 | ||
1229 | out: | |
1230 | return rc; | |
1231 | } | |
1232 | ||
6e70c267 SF |
1233 | /* |
1234 | * Directory operations under CIFS/SMB2/SMB3 are synchronous, so fsync() | |
1235 | * is a dummy operation. | |
1236 | */ | |
1237 | static int cifs_dir_fsync(struct file *file, loff_t start, loff_t end, int datasync) | |
1238 | { | |
1239 | cifs_dbg(FYI, "Sync directory - name: %pD datasync: 0x%x\n", | |
1240 | file, datasync); | |
1241 | ||
1242 | return 0; | |
1243 | } | |
1244 | ||
620d8745 SP |
1245 | static ssize_t cifs_copy_file_range(struct file *src_file, loff_t off, |
1246 | struct file *dst_file, loff_t destoff, | |
1247 | size_t len, unsigned int flags) | |
1248 | { | |
1249 | unsigned int xid = get_xid(); | |
1250 | ssize_t rc; | |
4e8aea30 SF |
1251 | struct cifsFileInfo *cfile = dst_file->private_data; |
1252 | ||
1253 | if (cfile->swapfile) | |
1254 | return -EOPNOTSUPP; | |
620d8745 SP |
1255 | |
1256 | rc = cifs_file_copychunk_range(xid, src_file, off, dst_file, destoff, | |
1257 | len, flags); | |
1258 | free_xid(xid); | |
64bf5ff5 | 1259 | |
5dae222a | 1260 | if (rc == -EOPNOTSUPP || rc == -EXDEV) |
64bf5ff5 DC |
1261 | rc = generic_copy_file_range(src_file, off, dst_file, |
1262 | destoff, len, flags); | |
620d8745 SP |
1263 | return rc; |
1264 | } | |
1265 | ||
4b6f5d20 | 1266 | const struct file_operations cifs_file_ops = { |
08bc0353 | 1267 | .read_iter = cifs_loose_read_iter, |
3dae8750 | 1268 | .write_iter = cifs_file_write_iter, |
1da177e4 LT |
1269 | .open = cifs_open, |
1270 | .release = cifs_close, | |
1271 | .lock = cifs_lock, | |
d0677992 | 1272 | .flock = cifs_flock, |
1da177e4 LT |
1273 | .fsync = cifs_fsync, |
1274 | .flush = cifs_flush, | |
1275 | .mmap = cifs_file_mmap, | |
5ffc4ef4 | 1276 | .splice_read = generic_file_splice_read, |
cd1aca29 | 1277 | .splice_write = iter_file_splice_write, |
c32a0b68 | 1278 | .llseek = cifs_llseek, |
f9ddcca4 | 1279 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1280 | .copy_file_range = cifs_copy_file_range, |
2e5dfc99 | 1281 | .remap_file_range = cifs_remap_file_range, |
84210e91 | 1282 | .setlease = cifs_setlease, |
31742c5a | 1283 | .fallocate = cifs_fallocate, |
1da177e4 LT |
1284 | }; |
1285 | ||
8be7e6ba | 1286 | const struct file_operations cifs_file_strict_ops = { |
e6a7bcb4 | 1287 | .read_iter = cifs_strict_readv, |
3dae8750 | 1288 | .write_iter = cifs_strict_writev, |
8be7e6ba PS |
1289 | .open = cifs_open, |
1290 | .release = cifs_close, | |
1291 | .lock = cifs_lock, | |
d0677992 | 1292 | .flock = cifs_flock, |
8be7e6ba PS |
1293 | .fsync = cifs_strict_fsync, |
1294 | .flush = cifs_flush, | |
7a6a19b1 | 1295 | .mmap = cifs_file_strict_mmap, |
8be7e6ba | 1296 | .splice_read = generic_file_splice_read, |
cd1aca29 | 1297 | .splice_write = iter_file_splice_write, |
8be7e6ba | 1298 | .llseek = cifs_llseek, |
8be7e6ba | 1299 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1300 | .copy_file_range = cifs_copy_file_range, |
2e5dfc99 | 1301 | .remap_file_range = cifs_remap_file_range, |
8be7e6ba | 1302 | .setlease = cifs_setlease, |
31742c5a | 1303 | .fallocate = cifs_fallocate, |
8be7e6ba PS |
1304 | }; |
1305 | ||
4b6f5d20 | 1306 | const struct file_operations cifs_file_direct_ops = { |
be4eb688 LL |
1307 | .read_iter = cifs_direct_readv, |
1308 | .write_iter = cifs_direct_writev, | |
1da177e4 LT |
1309 | .open = cifs_open, |
1310 | .release = cifs_close, | |
1311 | .lock = cifs_lock, | |
d0677992 | 1312 | .flock = cifs_flock, |
1da177e4 LT |
1313 | .fsync = cifs_fsync, |
1314 | .flush = cifs_flush, | |
a994b8fa | 1315 | .mmap = cifs_file_mmap, |
5ffc4ef4 | 1316 | .splice_read = generic_file_splice_read, |
cd1aca29 | 1317 | .splice_write = iter_file_splice_write, |
f9ddcca4 | 1318 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1319 | .copy_file_range = cifs_copy_file_range, |
2e5dfc99 | 1320 | .remap_file_range = cifs_remap_file_range, |
c32a0b68 | 1321 | .llseek = cifs_llseek, |
84210e91 | 1322 | .setlease = cifs_setlease, |
31742c5a | 1323 | .fallocate = cifs_fallocate, |
1da177e4 | 1324 | }; |
8be7e6ba | 1325 | |
4b6f5d20 | 1326 | const struct file_operations cifs_file_nobrl_ops = { |
08bc0353 | 1327 | .read_iter = cifs_loose_read_iter, |
3dae8750 | 1328 | .write_iter = cifs_file_write_iter, |
87c89dd7 SF |
1329 | .open = cifs_open, |
1330 | .release = cifs_close, | |
1331 | .fsync = cifs_fsync, | |
1332 | .flush = cifs_flush, | |
1333 | .mmap = cifs_file_mmap, | |
5ffc4ef4 | 1334 | .splice_read = generic_file_splice_read, |
cd1aca29 | 1335 | .splice_write = iter_file_splice_write, |
c32a0b68 | 1336 | .llseek = cifs_llseek, |
f9ddcca4 | 1337 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1338 | .copy_file_range = cifs_copy_file_range, |
2e5dfc99 | 1339 | .remap_file_range = cifs_remap_file_range, |
84210e91 | 1340 | .setlease = cifs_setlease, |
31742c5a | 1341 | .fallocate = cifs_fallocate, |
8b94bcb9 SF |
1342 | }; |
1343 | ||
8be7e6ba | 1344 | const struct file_operations cifs_file_strict_nobrl_ops = { |
e6a7bcb4 | 1345 | .read_iter = cifs_strict_readv, |
3dae8750 | 1346 | .write_iter = cifs_strict_writev, |
8be7e6ba PS |
1347 | .open = cifs_open, |
1348 | .release = cifs_close, | |
1349 | .fsync = cifs_strict_fsync, | |
1350 | .flush = cifs_flush, | |
7a6a19b1 | 1351 | .mmap = cifs_file_strict_mmap, |
8be7e6ba | 1352 | .splice_read = generic_file_splice_read, |
cd1aca29 | 1353 | .splice_write = iter_file_splice_write, |
8be7e6ba | 1354 | .llseek = cifs_llseek, |
8be7e6ba | 1355 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1356 | .copy_file_range = cifs_copy_file_range, |
2e5dfc99 | 1357 | .remap_file_range = cifs_remap_file_range, |
8be7e6ba | 1358 | .setlease = cifs_setlease, |
31742c5a | 1359 | .fallocate = cifs_fallocate, |
8be7e6ba PS |
1360 | }; |
1361 | ||
4b6f5d20 | 1362 | const struct file_operations cifs_file_direct_nobrl_ops = { |
be4eb688 LL |
1363 | .read_iter = cifs_direct_readv, |
1364 | .write_iter = cifs_direct_writev, | |
87c89dd7 SF |
1365 | .open = cifs_open, |
1366 | .release = cifs_close, | |
1367 | .fsync = cifs_fsync, | |
1368 | .flush = cifs_flush, | |
810627a0 | 1369 | .mmap = cifs_file_mmap, |
5ffc4ef4 | 1370 | .splice_read = generic_file_splice_read, |
cd1aca29 | 1371 | .splice_write = iter_file_splice_write, |
f9ddcca4 | 1372 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1373 | .copy_file_range = cifs_copy_file_range, |
2e5dfc99 | 1374 | .remap_file_range = cifs_remap_file_range, |
c32a0b68 | 1375 | .llseek = cifs_llseek, |
84210e91 | 1376 | .setlease = cifs_setlease, |
31742c5a | 1377 | .fallocate = cifs_fallocate, |
8b94bcb9 | 1378 | }; |
1da177e4 | 1379 | |
4b6f5d20 | 1380 | const struct file_operations cifs_dir_ops = { |
3125d265 | 1381 | .iterate_shared = cifs_readdir, |
1da177e4 LT |
1382 | .release = cifs_closedir, |
1383 | .read = generic_read_dir, | |
f9ddcca4 | 1384 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1385 | .copy_file_range = cifs_copy_file_range, |
2e5dfc99 | 1386 | .remap_file_range = cifs_remap_file_range, |
3222a3e5 | 1387 | .llseek = generic_file_llseek, |
6e70c267 | 1388 | .fsync = cifs_dir_fsync, |
1da177e4 LT |
1389 | }; |
1390 | ||
1391 | static void | |
51cc5068 | 1392 | cifs_init_once(void *inode) |
1da177e4 LT |
1393 | { |
1394 | struct cifsInodeInfo *cifsi = inode; | |
1395 | ||
a35afb83 | 1396 | inode_init_once(&cifsi->vfs_inode); |
1b4b55a1 | 1397 | init_rwsem(&cifsi->lock_sem); |
1da177e4 LT |
1398 | } |
1399 | ||
9ee108b2 | 1400 | static int __init |
1da177e4 LT |
1401 | cifs_init_inodecache(void) |
1402 | { | |
1403 | cifs_inode_cachep = kmem_cache_create("cifs_inode_cache", | |
26f57364 | 1404 | sizeof(struct cifsInodeInfo), |
fffb60f9 | 1405 | 0, (SLAB_RECLAIM_ACCOUNT| |
5d097056 | 1406 | SLAB_MEM_SPREAD|SLAB_ACCOUNT), |
20c2df83 | 1407 | cifs_init_once); |
1da177e4 LT |
1408 | if (cifs_inode_cachep == NULL) |
1409 | return -ENOMEM; | |
1410 | ||
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | static void | |
1415 | cifs_destroy_inodecache(void) | |
1416 | { | |
8c0a8537 KS |
1417 | /* |
1418 | * Make sure all delayed rcu free inodes are flushed before we | |
1419 | * destroy cache. | |
1420 | */ | |
1421 | rcu_barrier(); | |
1a1d92c1 | 1422 | kmem_cache_destroy(cifs_inode_cachep); |
1da177e4 LT |
1423 | } |
1424 | ||
1425 | static int | |
1426 | cifs_init_request_bufs(void) | |
1427 | { | |
3792c173 PS |
1428 | /* |
1429 | * SMB2 maximum header size is bigger than CIFS one - no problems to | |
1430 | * allocate some more bytes for CIFS. | |
1431 | */ | |
2a38e120 SF |
1432 | size_t max_hdr_size = MAX_SMB2_HDR_SIZE; |
1433 | ||
4523cc30 | 1434 | if (CIFSMaxBufSize < 8192) { |
1da177e4 LT |
1435 | /* Buffer size can not be smaller than 2 * PATH_MAX since maximum |
1436 | Unicode path name has to fit in any SMB/CIFS path based frames */ | |
1437 | CIFSMaxBufSize = 8192; | |
1438 | } else if (CIFSMaxBufSize > 1024*127) { | |
1439 | CIFSMaxBufSize = 1024 * 127; | |
1440 | } else { | |
1441 | CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/ | |
1442 | } | |
f96637be JP |
1443 | /* |
1444 | cifs_dbg(VFS, "CIFSMaxBufSize %d 0x%x\n", | |
1445 | CIFSMaxBufSize, CIFSMaxBufSize); | |
1446 | */ | |
de046449 | 1447 | cifs_req_cachep = kmem_cache_create_usercopy("cifs_request", |
3792c173 | 1448 | CIFSMaxBufSize + max_hdr_size, 0, |
de046449 DW |
1449 | SLAB_HWCACHE_ALIGN, 0, |
1450 | CIFSMaxBufSize + max_hdr_size, | |
1451 | NULL); | |
1da177e4 LT |
1452 | if (cifs_req_cachep == NULL) |
1453 | return -ENOMEM; | |
1454 | ||
4523cc30 | 1455 | if (cifs_min_rcv < 1) |
1da177e4 LT |
1456 | cifs_min_rcv = 1; |
1457 | else if (cifs_min_rcv > 64) { | |
1458 | cifs_min_rcv = 64; | |
f96637be | 1459 | cifs_dbg(VFS, "cifs_min_rcv set to maximum (64)\n"); |
1da177e4 LT |
1460 | } |
1461 | ||
93d2341c MD |
1462 | cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv, |
1463 | cifs_req_cachep); | |
1da177e4 | 1464 | |
4523cc30 | 1465 | if (cifs_req_poolp == NULL) { |
1da177e4 LT |
1466 | kmem_cache_destroy(cifs_req_cachep); |
1467 | return -ENOMEM; | |
1468 | } | |
ec637e3f | 1469 | /* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and |
1da177e4 LT |
1470 | almost all handle based requests (but not write response, nor is it |
1471 | sufficient for path based requests). A smaller size would have | |
50c2f753 | 1472 | been more efficient (compacting multiple slab items on one 4k page) |
1da177e4 LT |
1473 | for the case in which debug was on, but this larger size allows |
1474 | more SMBs to use small buffer alloc and is still much more | |
6dc0f87e | 1475 | efficient to alloc 1 per page off the slab compared to 17K (5page) |
1da177e4 | 1476 | alloc of large cifs buffers even when page debugging is on */ |
de046449 | 1477 | cifs_sm_req_cachep = kmem_cache_create_usercopy("cifs_small_rq", |
6dc0f87e | 1478 | MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN, |
de046449 | 1479 | 0, MAX_CIFS_SMALL_BUFFER_SIZE, NULL); |
1da177e4 LT |
1480 | if (cifs_sm_req_cachep == NULL) { |
1481 | mempool_destroy(cifs_req_poolp); | |
1482 | kmem_cache_destroy(cifs_req_cachep); | |
6dc0f87e | 1483 | return -ENOMEM; |
1da177e4 LT |
1484 | } |
1485 | ||
4523cc30 | 1486 | if (cifs_min_small < 2) |
1da177e4 LT |
1487 | cifs_min_small = 2; |
1488 | else if (cifs_min_small > 256) { | |
1489 | cifs_min_small = 256; | |
f96637be | 1490 | cifs_dbg(FYI, "cifs_min_small set to maximum (256)\n"); |
1da177e4 LT |
1491 | } |
1492 | ||
93d2341c MD |
1493 | cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small, |
1494 | cifs_sm_req_cachep); | |
1da177e4 | 1495 | |
4523cc30 | 1496 | if (cifs_sm_req_poolp == NULL) { |
1da177e4 LT |
1497 | mempool_destroy(cifs_req_poolp); |
1498 | kmem_cache_destroy(cifs_req_cachep); | |
1499 | kmem_cache_destroy(cifs_sm_req_cachep); | |
1500 | return -ENOMEM; | |
1501 | } | |
1502 | ||
1503 | return 0; | |
1504 | } | |
1505 | ||
1506 | static void | |
1507 | cifs_destroy_request_bufs(void) | |
1508 | { | |
1509 | mempool_destroy(cifs_req_poolp); | |
1a1d92c1 | 1510 | kmem_cache_destroy(cifs_req_cachep); |
1da177e4 | 1511 | mempool_destroy(cifs_sm_req_poolp); |
1a1d92c1 | 1512 | kmem_cache_destroy(cifs_sm_req_cachep); |
1da177e4 LT |
1513 | } |
1514 | ||
1515 | static int | |
1516 | cifs_init_mids(void) | |
1517 | { | |
1518 | cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids", | |
26f57364 SF |
1519 | sizeof(struct mid_q_entry), 0, |
1520 | SLAB_HWCACHE_ALIGN, NULL); | |
1da177e4 LT |
1521 | if (cifs_mid_cachep == NULL) |
1522 | return -ENOMEM; | |
1523 | ||
93d2341c MD |
1524 | /* 3 is a reasonable minimum number of simultaneous operations */ |
1525 | cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep); | |
4523cc30 | 1526 | if (cifs_mid_poolp == NULL) { |
1da177e4 LT |
1527 | kmem_cache_destroy(cifs_mid_cachep); |
1528 | return -ENOMEM; | |
1529 | } | |
1530 | ||
1da177e4 LT |
1531 | return 0; |
1532 | } | |
1533 | ||
1534 | static void | |
1535 | cifs_destroy_mids(void) | |
1536 | { | |
1537 | mempool_destroy(cifs_mid_poolp); | |
1a1d92c1 | 1538 | kmem_cache_destroy(cifs_mid_cachep); |
1da177e4 LT |
1539 | } |
1540 | ||
1da177e4 LT |
1541 | static int __init |
1542 | init_cifs(void) | |
1543 | { | |
1544 | int rc = 0; | |
1da177e4 | 1545 | cifs_proc_init(); |
e7ddee90 | 1546 | INIT_LIST_HEAD(&cifs_tcp_ses_list); |
1da177e4 LT |
1547 | /* |
1548 | * Initialize Global counters | |
1549 | */ | |
1550 | atomic_set(&sesInfoAllocCount, 0); | |
1551 | atomic_set(&tconInfoAllocCount, 0); | |
6d82c27a | 1552 | atomic_set(&tcpSesNextId, 0); |
6dc0f87e | 1553 | atomic_set(&tcpSesAllocCount, 0); |
1da177e4 LT |
1554 | atomic_set(&tcpSesReconnectCount, 0); |
1555 | atomic_set(&tconInfoReconnectCount, 0); | |
1556 | ||
1557 | atomic_set(&bufAllocCount, 0); | |
4498eed5 SF |
1558 | atomic_set(&smBufAllocCount, 0); |
1559 | #ifdef CONFIG_CIFS_STATS2 | |
1560 | atomic_set(&totBufAllocCount, 0); | |
1561 | atomic_set(&totSmBufAllocCount, 0); | |
00778e22 SF |
1562 | if (slow_rsp_threshold < 1) |
1563 | cifs_dbg(FYI, "slow_response_threshold msgs disabled\n"); | |
1564 | else if (slow_rsp_threshold > 32767) | |
1565 | cifs_dbg(VFS, | |
1566 | "slow response threshold set higher than recommended (0 to 32767)\n"); | |
4498eed5 SF |
1567 | #endif /* CONFIG_CIFS_STATS2 */ |
1568 | ||
1da177e4 LT |
1569 | atomic_set(&midCount, 0); |
1570 | GlobalCurrentXid = 0; | |
1571 | GlobalTotalActiveXid = 0; | |
1572 | GlobalMaxActiveXid = 0; | |
3f9bcca7 | 1573 | spin_lock_init(&cifs_tcp_ses_lock); |
1da177e4 LT |
1574 | spin_lock_init(&GlobalMid_Lock); |
1575 | ||
51b0817b | 1576 | cifs_lock_secret = get_random_u32(); |
3d22462a | 1577 | |
4523cc30 | 1578 | if (cifs_max_pending < 2) { |
1da177e4 | 1579 | cifs_max_pending = 2; |
f96637be | 1580 | cifs_dbg(FYI, "cifs_max_pending set to min of 2\n"); |
10b9b98e PS |
1581 | } else if (cifs_max_pending > CIFS_MAX_REQ) { |
1582 | cifs_max_pending = CIFS_MAX_REQ; | |
f96637be JP |
1583 | cifs_dbg(FYI, "cifs_max_pending set to max of %u\n", |
1584 | CIFS_MAX_REQ); | |
1da177e4 LT |
1585 | } |
1586 | ||
da472fc8 JL |
1587 | cifsiod_wq = alloc_workqueue("cifsiod", WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
1588 | if (!cifsiod_wq) { | |
1589 | rc = -ENOMEM; | |
1590 | goto out_clean_proc; | |
1591 | } | |
1592 | ||
35cf94a3 | 1593 | /* |
10328c44 SF |
1594 | * Consider in future setting limit!=0 maybe to min(num_of_cores - 1, 3) |
1595 | * so that we don't launch too many worker threads but | |
0ac624f4 | 1596 | * Documentation/core-api/workqueue.rst recommends setting it to 0 |
35cf94a3 | 1597 | */ |
10328c44 SF |
1598 | |
1599 | /* WQ_UNBOUND allows decrypt tasks to run on any CPU */ | |
35cf94a3 | 1600 | decrypt_wq = alloc_workqueue("smb3decryptd", |
10328c44 | 1601 | WQ_UNBOUND|WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
35cf94a3 SF |
1602 | if (!decrypt_wq) { |
1603 | rc = -ENOMEM; | |
1604 | goto out_destroy_cifsiod_wq; | |
1605 | } | |
1606 | ||
32546a95 RS |
1607 | fileinfo_put_wq = alloc_workqueue("cifsfileinfoput", |
1608 | WQ_UNBOUND|WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); | |
1609 | if (!fileinfo_put_wq) { | |
1610 | rc = -ENOMEM; | |
1611 | goto out_destroy_decrypt_wq; | |
1612 | } | |
1613 | ||
3998e6b8 RV |
1614 | cifsoplockd_wq = alloc_workqueue("cifsoplockd", |
1615 | WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); | |
1616 | if (!cifsoplockd_wq) { | |
1617 | rc = -ENOMEM; | |
32546a95 | 1618 | goto out_destroy_fileinfo_put_wq; |
3998e6b8 RV |
1619 | } |
1620 | ||
c3f207ab RS |
1621 | deferredclose_wq = alloc_workqueue("deferredclose", |
1622 | WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); | |
1623 | if (!deferredclose_wq) { | |
1624 | rc = -ENOMEM; | |
1625 | goto out_destroy_cifsoplockd_wq; | |
1626 | } | |
1627 | ||
f579cf3c SJ |
1628 | rc = cifs_fscache_register(); |
1629 | if (rc) | |
c3f207ab | 1630 | goto out_destroy_deferredclose_wq; |
f579cf3c | 1631 | |
1da177e4 | 1632 | rc = cifs_init_inodecache(); |
45af7a0f | 1633 | if (rc) |
d3bf5221 | 1634 | goto out_unreg_fscache; |
45af7a0f SF |
1635 | |
1636 | rc = cifs_init_mids(); | |
1637 | if (rc) | |
1638 | goto out_destroy_inodecache; | |
1639 | ||
1640 | rc = cifs_init_request_bufs(); | |
1641 | if (rc) | |
1642 | goto out_destroy_mids; | |
1643 | ||
1c780228 PA |
1644 | #ifdef CONFIG_CIFS_DFS_UPCALL |
1645 | rc = dfs_cache_init(); | |
1646 | if (rc) | |
1647 | goto out_destroy_request_bufs; | |
1648 | #endif /* CONFIG_CIFS_DFS_UPCALL */ | |
84a15b93 | 1649 | #ifdef CONFIG_CIFS_UPCALL |
b74cb9a8 | 1650 | rc = init_cifs_spnego(); |
84a15b93 | 1651 | if (rc) |
1c780228 | 1652 | goto out_destroy_dfs_cache; |
4d79dba0 | 1653 | #endif /* CONFIG_CIFS_UPCALL */ |
06f08dab SC |
1654 | #ifdef CONFIG_CIFS_SWN_UPCALL |
1655 | rc = cifs_genl_init(); | |
1656 | if (rc) | |
1657 | goto out_register_key_type; | |
1658 | #endif /* CONFIG_CIFS_SWN_UPCALL */ | |
4d79dba0 | 1659 | |
4d79dba0 SP |
1660 | rc = init_cifs_idmap(); |
1661 | if (rc) | |
06f08dab | 1662 | goto out_cifs_swn_init; |
4d79dba0 SP |
1663 | |
1664 | rc = register_filesystem(&cifs_fs_type); | |
1665 | if (rc) | |
c4aca0c0 | 1666 | goto out_init_cifs_idmap; |
45af7a0f | 1667 | |
49218b4f SF |
1668 | rc = register_filesystem(&smb3_fs_type); |
1669 | if (rc) { | |
1670 | unregister_filesystem(&cifs_fs_type); | |
1671 | goto out_init_cifs_idmap; | |
1672 | } | |
1673 | ||
45af7a0f SF |
1674 | return 0; |
1675 | ||
c4aca0c0 | 1676 | out_init_cifs_idmap: |
4d79dba0 | 1677 | exit_cifs_idmap(); |
06f08dab SC |
1678 | out_cifs_swn_init: |
1679 | #ifdef CONFIG_CIFS_SWN_UPCALL | |
1680 | cifs_genl_exit(); | |
c4aca0c0 | 1681 | out_register_key_type: |
06f08dab | 1682 | #endif |
84a15b93 | 1683 | #ifdef CONFIG_CIFS_UPCALL |
b74cb9a8 | 1684 | exit_cifs_spnego(); |
1c780228 PA |
1685 | out_destroy_dfs_cache: |
1686 | #endif | |
1687 | #ifdef CONFIG_CIFS_DFS_UPCALL | |
1688 | dfs_cache_destroy(); | |
c4aca0c0 | 1689 | out_destroy_request_bufs: |
1fc7995d | 1690 | #endif |
45af7a0f | 1691 | cifs_destroy_request_bufs(); |
d3bf5221 | 1692 | out_destroy_mids: |
45af7a0f | 1693 | cifs_destroy_mids(); |
d3bf5221 | 1694 | out_destroy_inodecache: |
45af7a0f | 1695 | cifs_destroy_inodecache(); |
d3bf5221 | 1696 | out_unreg_fscache: |
f579cf3c | 1697 | cifs_fscache_unregister(); |
c3f207ab RS |
1698 | out_destroy_deferredclose_wq: |
1699 | destroy_workqueue(deferredclose_wq); | |
3998e6b8 RV |
1700 | out_destroy_cifsoplockd_wq: |
1701 | destroy_workqueue(cifsoplockd_wq); | |
32546a95 RS |
1702 | out_destroy_fileinfo_put_wq: |
1703 | destroy_workqueue(fileinfo_put_wq); | |
35cf94a3 SF |
1704 | out_destroy_decrypt_wq: |
1705 | destroy_workqueue(decrypt_wq); | |
3998e6b8 | 1706 | out_destroy_cifsiod_wq: |
da472fc8 | 1707 | destroy_workqueue(cifsiod_wq); |
d3bf5221 SF |
1708 | out_clean_proc: |
1709 | cifs_proc_clean(); | |
1da177e4 LT |
1710 | return rc; |
1711 | } | |
1712 | ||
1713 | static void __exit | |
1714 | exit_cifs(void) | |
1715 | { | |
49218b4f | 1716 | cifs_dbg(NOISY, "exit_smb3\n"); |
3dd93306 | 1717 | unregister_filesystem(&cifs_fs_type); |
49218b4f | 1718 | unregister_filesystem(&smb3_fs_type); |
78d31a3a | 1719 | cifs_dfs_release_automount_timer(); |
4d79dba0 | 1720 | exit_cifs_idmap(); |
06f08dab SC |
1721 | #ifdef CONFIG_CIFS_SWN_UPCALL |
1722 | cifs_genl_exit(); | |
1723 | #endif | |
84a15b93 | 1724 | #ifdef CONFIG_CIFS_UPCALL |
94183331 | 1725 | exit_cifs_spnego(); |
1c780228 PA |
1726 | #endif |
1727 | #ifdef CONFIG_CIFS_DFS_UPCALL | |
1728 | dfs_cache_destroy(); | |
1da177e4 | 1729 | #endif |
1da177e4 | 1730 | cifs_destroy_request_bufs(); |
3dd93306 JL |
1731 | cifs_destroy_mids(); |
1732 | cifs_destroy_inodecache(); | |
1733 | cifs_fscache_unregister(); | |
c3f207ab | 1734 | destroy_workqueue(deferredclose_wq); |
3998e6b8 | 1735 | destroy_workqueue(cifsoplockd_wq); |
35cf94a3 | 1736 | destroy_workqueue(decrypt_wq); |
32546a95 | 1737 | destroy_workqueue(fileinfo_put_wq); |
da472fc8 | 1738 | destroy_workqueue(cifsiod_wq); |
3dd93306 | 1739 | cifs_proc_clean(); |
1da177e4 LT |
1740 | } |
1741 | ||
1c3a13a3 | 1742 | MODULE_AUTHOR("Steve French"); |
6dc0f87e | 1743 | MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */ |
1da177e4 | 1744 | MODULE_DESCRIPTION |
1c3a13a3 SF |
1745 | ("VFS to access SMB3 servers e.g. Samba, Macs, Azure and Windows (and " |
1746 | "also older servers complying with the SNIA CIFS Specification)"); | |
1da177e4 | 1747 | MODULE_VERSION(CIFS_VERSION); |
3591bb83 RS |
1748 | MODULE_SOFTDEP("ecb"); |
1749 | MODULE_SOFTDEP("hmac"); | |
3591bb83 RS |
1750 | MODULE_SOFTDEP("md5"); |
1751 | MODULE_SOFTDEP("nls"); | |
1752 | MODULE_SOFTDEP("aes"); | |
1753 | MODULE_SOFTDEP("cmac"); | |
1754 | MODULE_SOFTDEP("sha256"); | |
1755 | MODULE_SOFTDEP("sha512"); | |
1756 | MODULE_SOFTDEP("aead2"); | |
1757 | MODULE_SOFTDEP("ccm"); | |
1758 | MODULE_SOFTDEP("gcm"); | |
1da177e4 LT |
1759 | module_init(init_cifs) |
1760 | module_exit(exit_cifs) |