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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsfs.c | |
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 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* Note that BB means BUGBUG (ie something to fix eventually) */ | |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/fs.h> | |
28 | #include <linux/mount.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/list.h> | |
32 | #include <linux/seq_file.h> | |
33 | #include <linux/vfs.h> | |
34 | #include <linux/mempool.h> | |
6ab16d24 | 35 | #include <linux/delay.h> |
45af7a0f | 36 | #include <linux/kthread.h> |
7dfb7103 | 37 | #include <linux/freezer.h> |
fec11dd9 | 38 | #include <linux/namei.h> |
b8c32dbb | 39 | #include <linux/random.h> |
3eb9a889 | 40 | #include <net/ipv6.h> |
1da177e4 LT |
41 | #include "cifsfs.h" |
42 | #include "cifspdu.h" | |
43 | #define DECLARE_GLOBALS_HERE | |
44 | #include "cifsglob.h" | |
45 | #include "cifsproto.h" | |
46 | #include "cifs_debug.h" | |
47 | #include "cifs_fs_sb.h" | |
48 | #include <linux/mm.h> | |
84a15b93 | 49 | #include <linux/key-type.h> |
e545937a | 50 | #include "cifs_spnego.h" |
f579cf3c | 51 | #include "fscache.h" |
3792c173 PS |
52 | #ifdef CONFIG_CIFS_SMB2 |
53 | #include "smb2pdu.h" | |
54 | #endif | |
1da177e4 | 55 | |
1da177e4 | 56 | int cifsFYI = 0; |
1da177e4 | 57 | int traceSMB = 0; |
e7504734 | 58 | bool enable_oplocks = true; |
1da177e4 LT |
59 | unsigned int linuxExtEnabled = 1; |
60 | unsigned int lookupCacheEnabled = 1; | |
04912d6a | 61 | unsigned int global_secflags = CIFSSEC_DEF; |
3979877e | 62 | /* unsigned int ntlmv2_support = 0; */ |
1da177e4 | 63 | unsigned int sign_CIFS_PDUs = 1; |
ee9b6d61 | 64 | static const struct super_operations cifs_super_ops; |
1da177e4 | 65 | unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE; |
60654ce0 | 66 | module_param(CIFSMaxBufSize, uint, 0); |
63135e08 SF |
67 | MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header). " |
68 | "Default: 16384 Range: 8192 to 130048"); | |
1da177e4 | 69 | unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL; |
60654ce0 | 70 | module_param(cifs_min_rcv, uint, 0); |
63135e08 SF |
71 | MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: " |
72 | "1 to 64"); | |
1da177e4 | 73 | unsigned int cifs_min_small = 30; |
60654ce0 | 74 | module_param(cifs_min_small, uint, 0); |
63135e08 SF |
75 | MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 " |
76 | "Range: 2 to 256"); | |
1da177e4 | 77 | unsigned int cifs_max_pending = CIFS_MAX_REQ; |
60654ce0 | 78 | module_param(cifs_max_pending, uint, 0444); |
63135e08 | 79 | MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. " |
10b9b98e | 80 | "Default: 32767 Range: 2 to 32767."); |
e7504734 | 81 | module_param(enable_oplocks, bool, 0644); |
60654ce0 | 82 | MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks. Default: y/Y/1"); |
e7504734 | 83 | |
1da177e4 LT |
84 | extern mempool_t *cifs_sm_req_poolp; |
85 | extern mempool_t *cifs_req_poolp; | |
86 | extern mempool_t *cifs_mid_poolp; | |
87 | ||
da472fc8 JL |
88 | struct workqueue_struct *cifsiod_wq; |
89 | ||
24261fc2 MG |
90 | /* |
91 | * Bumps refcount for cifs super block. | |
92 | * Note that it should be only called if a referece to VFS super block is | |
93 | * already held, e.g. in open-type syscalls context. Otherwise it can race with | |
94 | * atomic_dec_and_test in deactivate_locked_super. | |
95 | */ | |
96 | void | |
97 | cifs_sb_active(struct super_block *sb) | |
98 | { | |
99 | struct cifs_sb_info *server = CIFS_SB(sb); | |
100 | ||
101 | if (atomic_inc_return(&server->active) == 1) | |
102 | atomic_inc(&sb->s_active); | |
103 | } | |
104 | ||
105 | void | |
106 | cifs_sb_deactive(struct super_block *sb) | |
107 | { | |
108 | struct cifs_sb_info *server = CIFS_SB(sb); | |
109 | ||
110 | if (atomic_dec_and_test(&server->active)) | |
111 | deactivate_super(sb); | |
112 | } | |
113 | ||
1da177e4 | 114 | static int |
97d1152a | 115 | cifs_read_super(struct super_block *sb) |
1da177e4 LT |
116 | { |
117 | struct inode *inode; | |
b2e5cd33 | 118 | struct cifs_sb_info *cifs_sb; |
2f6c9479 | 119 | struct cifs_tcon *tcon; |
1da177e4 | 120 | int rc = 0; |
50c2f753 | 121 | |
b2e5cd33 | 122 | cifs_sb = CIFS_SB(sb); |
2f6c9479 | 123 | tcon = cifs_sb_master_tcon(cifs_sb); |
1da177e4 | 124 | |
2c6292ae AV |
125 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL) |
126 | sb->s_flags |= MS_POSIXACL; | |
127 | ||
2f6c9479 | 128 | if (tcon->ses->capabilities & tcon->ses->server->vals->cap_large_files) |
2c6292ae AV |
129 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
130 | else | |
131 | sb->s_maxbytes = MAX_NON_LFS; | |
132 | ||
133 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ | |
134 | sb->s_time_gran = 100; | |
135 | ||
1da177e4 LT |
136 | sb->s_magic = CIFS_MAGIC_NUMBER; |
137 | sb->s_op = &cifs_super_ops; | |
8044f7f4 | 138 | sb->s_bdi = &cifs_sb->bdi; |
1da177e4 LT |
139 | sb->s_blocksize = CIFS_MAX_MSGSIZE; |
140 | sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */ | |
9b6763e0 | 141 | inode = cifs_root_iget(sb); |
1da177e4 | 142 | |
ce634ab2 DH |
143 | if (IS_ERR(inode)) { |
144 | rc = PTR_ERR(inode); | |
1da177e4 LT |
145 | goto out_no_root; |
146 | } | |
147 | ||
2f6c9479 | 148 | if (tcon->nocase) |
66ffd113 JL |
149 | sb->s_d_op = &cifs_ci_dentry_ops; |
150 | else | |
151 | sb->s_d_op = &cifs_dentry_ops; | |
152 | ||
48fde701 | 153 | sb->s_root = d_make_root(inode); |
1da177e4 LT |
154 | if (!sb->s_root) { |
155 | rc = -ENOMEM; | |
156 | goto out_no_root; | |
157 | } | |
50c2f753 | 158 | |
f3a6a60e | 159 | #ifdef CONFIG_CIFS_NFSD_EXPORT |
7521a3c5 | 160 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
f96637be | 161 | cifs_dbg(FYI, "export ops supported\n"); |
7521a3c5 SF |
162 | sb->s_export_op = &cifs_export_ops; |
163 | } | |
f3a6a60e | 164 | #endif /* CONFIG_CIFS_NFSD_EXPORT */ |
1da177e4 LT |
165 | |
166 | return 0; | |
167 | ||
168 | out_no_root: | |
f96637be | 169 | cifs_dbg(VFS, "%s: get root inode failed\n", __func__); |
1da177e4 LT |
170 | return rc; |
171 | } | |
172 | ||
6d686175 AV |
173 | static void cifs_kill_sb(struct super_block *sb) |
174 | { | |
175 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
176 | kill_anon_super(sb); | |
98ab494d | 177 | cifs_umount(cifs_sb); |
1da177e4 LT |
178 | } |
179 | ||
180 | static int | |
726c3342 | 181 | cifs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 182 | { |
726c3342 | 183 | struct super_block *sb = dentry->d_sb; |
39da9847 | 184 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
96daf2b0 | 185 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
76ec5e33 | 186 | struct TCP_Server_Info *server = tcon->ses->server; |
6d5786a3 | 187 | unsigned int xid; |
76ec5e33 | 188 | int rc = 0; |
1da177e4 | 189 | |
6d5786a3 | 190 | xid = get_xid(); |
1da177e4 | 191 | |
39da9847 SF |
192 | /* |
193 | * PATH_MAX may be too long - it would presumably be total path, | |
194 | * but note that some servers (includinng Samba 3) have a shorter | |
195 | * maximum path. | |
196 | * | |
197 | * Instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO. | |
198 | */ | |
199 | buf->f_namelen = PATH_MAX; | |
1da177e4 LT |
200 | buf->f_files = 0; /* undefined */ |
201 | buf->f_ffree = 0; /* unlimited */ | |
202 | ||
76ec5e33 PS |
203 | if (server->ops->queryfs) |
204 | rc = server->ops->queryfs(xid, tcon, buf); | |
39da9847 | 205 | |
6d5786a3 | 206 | free_xid(xid); |
39da9847 | 207 | return 0; |
1da177e4 LT |
208 | } |
209 | ||
31742c5a SF |
210 | static long cifs_fallocate(struct file *file, int mode, loff_t off, loff_t len) |
211 | { | |
7119e220 | 212 | struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file); |
31742c5a SF |
213 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
214 | struct TCP_Server_Info *server = tcon->ses->server; | |
215 | ||
216 | if (server->ops->fallocate) | |
217 | return server->ops->fallocate(file, tcon, mode, off, len); | |
218 | ||
219 | return -EOPNOTSUPP; | |
220 | } | |
221 | ||
10556cb2 | 222 | static int cifs_permission(struct inode *inode, int mask) |
1da177e4 LT |
223 | { |
224 | struct cifs_sb_info *cifs_sb; | |
225 | ||
226 | cifs_sb = CIFS_SB(inode->i_sb); | |
227 | ||
f696a365 MS |
228 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) { |
229 | if ((mask & MAY_EXEC) && !execute_ok(inode)) | |
230 | return -EACCES; | |
231 | else | |
232 | return 0; | |
233 | } else /* file mode might have been restricted at mount time | |
50c2f753 | 234 | on the client (above and beyond ACL on servers) for |
1da177e4 | 235 | servers which do not support setting and viewing mode bits, |
50c2f753 | 236 | so allowing client to check permissions is useful */ |
2830ba7f | 237 | return generic_permission(inode, mask); |
1da177e4 LT |
238 | } |
239 | ||
e18b890b CL |
240 | static struct kmem_cache *cifs_inode_cachep; |
241 | static struct kmem_cache *cifs_req_cachep; | |
242 | static struct kmem_cache *cifs_mid_cachep; | |
e18b890b | 243 | static struct kmem_cache *cifs_sm_req_cachep; |
1da177e4 LT |
244 | mempool_t *cifs_sm_req_poolp; |
245 | mempool_t *cifs_req_poolp; | |
246 | mempool_t *cifs_mid_poolp; | |
247 | ||
248 | static struct inode * | |
249 | cifs_alloc_inode(struct super_block *sb) | |
250 | { | |
251 | struct cifsInodeInfo *cifs_inode; | |
e94b1766 | 252 | cifs_inode = kmem_cache_alloc(cifs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
253 | if (!cifs_inode) |
254 | return NULL; | |
255 | cifs_inode->cifsAttrs = 0x20; /* default */ | |
1da177e4 | 256 | cifs_inode->time = 0; |
b8c32dbb PS |
257 | /* |
258 | * Until the file is open and we have gotten oplock info back from the | |
259 | * server, can not assume caching of file data or metadata. | |
260 | */ | |
c6723628 | 261 | cifs_set_oplock_level(cifs_inode, 0); |
aff8d5ca | 262 | cifs_inode->flags = 0; |
c11f1df5 SP |
263 | spin_lock_init(&cifs_inode->writers_lock); |
264 | cifs_inode->writers = 0; | |
1da177e4 | 265 | cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ |
fbec9ab9 | 266 | cifs_inode->server_eof = 0; |
20054bd6 JL |
267 | cifs_inode->uniqueid = 0; |
268 | cifs_inode->createtime = 0; | |
42873b0a | 269 | cifs_inode->epoch = 0; |
b8c32dbb PS |
270 | #ifdef CONFIG_CIFS_SMB2 |
271 | get_random_bytes(cifs_inode->lease_key, SMB2_LEASE_KEY_SIZE); | |
272 | #endif | |
273 | /* | |
274 | * Can not set i_flags here - they get immediately overwritten to zero | |
275 | * by the VFS. | |
276 | */ | |
277 | /* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME; */ | |
1da177e4 | 278 | INIT_LIST_HEAD(&cifs_inode->openFileList); |
f45d3416 | 279 | INIT_LIST_HEAD(&cifs_inode->llist); |
1da177e4 LT |
280 | return &cifs_inode->vfs_inode; |
281 | } | |
282 | ||
fa0d7e3d NP |
283 | static void cifs_i_callback(struct rcu_head *head) |
284 | { | |
285 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
fa0d7e3d NP |
286 | kmem_cache_free(cifs_inode_cachep, CIFS_I(inode)); |
287 | } | |
288 | ||
1da177e4 LT |
289 | static void |
290 | cifs_destroy_inode(struct inode *inode) | |
291 | { | |
fa0d7e3d | 292 | call_rcu(&inode->i_rcu, cifs_i_callback); |
1da177e4 LT |
293 | } |
294 | ||
9451a9a5 | 295 | static void |
b57922d9 | 296 | cifs_evict_inode(struct inode *inode) |
9451a9a5 | 297 | { |
91b0abe3 | 298 | truncate_inode_pages_final(&inode->i_data); |
dbd5768f | 299 | clear_inode(inode); |
9451a9a5 SJ |
300 | cifs_fscache_release_inode_cookie(inode); |
301 | } | |
302 | ||
61f98ffd JL |
303 | static void |
304 | cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server) | |
305 | { | |
a9f1b85e PS |
306 | struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr; |
307 | struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr; | |
308 | ||
571d5972 | 309 | seq_puts(s, ",addr="); |
61f98ffd | 310 | |
a9f1b85e | 311 | switch (server->dstaddr.ss_family) { |
61f98ffd | 312 | case AF_INET: |
a9f1b85e | 313 | seq_printf(s, "%pI4", &sa->sin_addr.s_addr); |
61f98ffd JL |
314 | break; |
315 | case AF_INET6: | |
a9f1b85e PS |
316 | seq_printf(s, "%pI6", &sa6->sin6_addr.s6_addr); |
317 | if (sa6->sin6_scope_id) | |
318 | seq_printf(s, "%%%u", sa6->sin6_scope_id); | |
61f98ffd JL |
319 | break; |
320 | default: | |
571d5972 | 321 | seq_puts(s, "(unknown)"); |
61f98ffd JL |
322 | } |
323 | } | |
324 | ||
3e715513 | 325 | static void |
28e11bd8 | 326 | cifs_show_security(struct seq_file *s, struct cifs_ses *ses) |
3e715513 | 327 | { |
eda2116f SF |
328 | if (ses->sectype == Unspecified) { |
329 | if (ses->user_name == NULL) | |
330 | seq_puts(s, ",sec=none"); | |
28e11bd8 | 331 | return; |
eda2116f | 332 | } |
28e11bd8 | 333 | |
571d5972 | 334 | seq_puts(s, ",sec="); |
3e715513 | 335 | |
28e11bd8 | 336 | switch (ses->sectype) { |
3e715513 | 337 | case LANMAN: |
571d5972 | 338 | seq_puts(s, "lanman"); |
3e715513 JL |
339 | break; |
340 | case NTLMv2: | |
571d5972 | 341 | seq_puts(s, "ntlmv2"); |
3e715513 JL |
342 | break; |
343 | case NTLM: | |
571d5972 | 344 | seq_puts(s, "ntlm"); |
3e715513 JL |
345 | break; |
346 | case Kerberos: | |
571d5972 | 347 | seq_puts(s, "krb5"); |
3e715513 JL |
348 | break; |
349 | case RawNTLMSSP: | |
571d5972 | 350 | seq_puts(s, "ntlmssp"); |
3e715513 JL |
351 | break; |
352 | default: | |
353 | /* shouldn't ever happen */ | |
571d5972 | 354 | seq_puts(s, "unknown"); |
3e715513 JL |
355 | break; |
356 | } | |
357 | ||
28e11bd8 | 358 | if (ses->sign) |
571d5972 | 359 | seq_puts(s, "i"); |
3e715513 JL |
360 | } |
361 | ||
d06b5056 JL |
362 | static void |
363 | cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb) | |
364 | { | |
571d5972 | 365 | seq_puts(s, ",cache="); |
d06b5056 JL |
366 | |
367 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) | |
571d5972 | 368 | seq_puts(s, "strict"); |
d06b5056 | 369 | else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) |
571d5972 | 370 | seq_puts(s, "none"); |
d06b5056 | 371 | else |
571d5972 | 372 | seq_puts(s, "loose"); |
d06b5056 JL |
373 | } |
374 | ||
3ae35cde JL |
375 | static void |
376 | cifs_show_nls(struct seq_file *s, struct nls_table *cur) | |
377 | { | |
378 | struct nls_table *def; | |
379 | ||
380 | /* Display iocharset= option if it's not default charset */ | |
381 | def = load_nls_default(); | |
382 | if (def != cur) | |
383 | seq_printf(s, ",iocharset=%s", cur->charset); | |
384 | unload_nls(def); | |
385 | } | |
386 | ||
1da177e4 LT |
387 | /* |
388 | * cifs_show_options() is for displaying mount options in /proc/mounts. | |
389 | * Not all settable options are displayed but most of the important | |
390 | * ones are. | |
391 | */ | |
392 | static int | |
34c80b1d | 393 | cifs_show_options(struct seq_file *s, struct dentry *root) |
1da177e4 | 394 | { |
34c80b1d | 395 | struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb); |
96daf2b0 | 396 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
3eb9a889 BG |
397 | struct sockaddr *srcaddr; |
398 | srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr; | |
8616e0fc | 399 | |
a068acf2 | 400 | seq_show_option(s, "vers", tcon->ses->server->vals->version_string); |
28e11bd8 | 401 | cifs_show_security(s, tcon->ses); |
d06b5056 | 402 | cifs_show_cache_flavor(s, cifs_sb); |
3e715513 | 403 | |
29e07c82 | 404 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) |
571d5972 | 405 | seq_puts(s, ",multiuser"); |
8727c8a8 | 406 | else if (tcon->ses->user_name) |
a068acf2 | 407 | seq_show_option(s, "username", tcon->ses->user_name); |
29e07c82 | 408 | |
8616e0fc | 409 | if (tcon->ses->domainName) |
a068acf2 | 410 | seq_show_option(s, "domain", tcon->ses->domainName); |
8616e0fc | 411 | |
3eb9a889 BG |
412 | if (srcaddr->sa_family != AF_UNSPEC) { |
413 | struct sockaddr_in *saddr4; | |
414 | struct sockaddr_in6 *saddr6; | |
415 | saddr4 = (struct sockaddr_in *)srcaddr; | |
416 | saddr6 = (struct sockaddr_in6 *)srcaddr; | |
417 | if (srcaddr->sa_family == AF_INET6) | |
418 | seq_printf(s, ",srcaddr=%pI6c", | |
419 | &saddr6->sin6_addr); | |
420 | else if (srcaddr->sa_family == AF_INET) | |
421 | seq_printf(s, ",srcaddr=%pI4", | |
422 | &saddr4->sin_addr.s_addr); | |
423 | else | |
424 | seq_printf(s, ",srcaddr=BAD-AF:%i", | |
425 | (int)(srcaddr->sa_family)); | |
426 | } | |
427 | ||
1f68233c EB |
428 | seq_printf(s, ",uid=%u", |
429 | from_kuid_munged(&init_user_ns, cifs_sb->mnt_uid)); | |
340481a3 | 430 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
571d5972 | 431 | seq_puts(s, ",forceuid"); |
4486d6ed | 432 | else |
571d5972 | 433 | seq_puts(s, ",noforceuid"); |
340481a3 | 434 | |
1f68233c EB |
435 | seq_printf(s, ",gid=%u", |
436 | from_kgid_munged(&init_user_ns, cifs_sb->mnt_gid)); | |
340481a3 | 437 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
571d5972 | 438 | seq_puts(s, ",forcegid"); |
4486d6ed | 439 | else |
571d5972 | 440 | seq_puts(s, ",noforcegid"); |
8616e0fc | 441 | |
61f98ffd | 442 | cifs_show_address(s, tcon->ses->server); |
1da177e4 | 443 | |
8616e0fc | 444 | if (!tcon->unix_ext) |
5206efd6 | 445 | seq_printf(s, ",file_mode=0%ho,dir_mode=0%ho", |
2b280fab SF |
446 | cifs_sb->mnt_file_mode, |
447 | cifs_sb->mnt_dir_mode); | |
3ae35cde JL |
448 | |
449 | cifs_show_nls(s, cifs_sb->local_nls); | |
450 | ||
8616e0fc | 451 | if (tcon->seal) |
571d5972 | 452 | seq_puts(s, ",seal"); |
8616e0fc | 453 | if (tcon->nocase) |
571d5972 | 454 | seq_puts(s, ",nocase"); |
8616e0fc | 455 | if (tcon->retry) |
571d5972 | 456 | seq_puts(s, ",hard"); |
f16dfa7c SF |
457 | if (tcon->use_persistent) |
458 | seq_puts(s, ",persistenthandles"); | |
592fafe6 SF |
459 | else if (tcon->use_resilient) |
460 | seq_puts(s, ",resilienthandles"); | |
d4ffff1f | 461 | if (tcon->unix_ext) |
571d5972 | 462 | seq_puts(s, ",unix"); |
d4ffff1f | 463 | else |
571d5972 | 464 | seq_puts(s, ",nounix"); |
8616e0fc | 465 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) |
571d5972 | 466 | seq_puts(s, ",posixpaths"); |
8616e0fc | 467 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) |
571d5972 | 468 | seq_puts(s, ",setuids"); |
8616e0fc | 469 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) |
571d5972 | 470 | seq_puts(s, ",serverino"); |
d4ffff1f | 471 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD) |
571d5972 | 472 | seq_puts(s, ",rwpidforward"); |
d4ffff1f | 473 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) |
571d5972 | 474 | seq_puts(s, ",forcemand"); |
8616e0fc | 475 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
571d5972 | 476 | seq_puts(s, ",nouser_xattr"); |
8616e0fc | 477 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR) |
571d5972 | 478 | seq_puts(s, ",mapchars"); |
bc8ebdc4 NA |
479 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR) |
480 | seq_puts(s, ",mapposix"); | |
8616e0fc | 481 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) |
571d5972 | 482 | seq_puts(s, ",sfu"); |
8616e0fc | 483 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
571d5972 | 484 | seq_puts(s, ",nobrl"); |
8616e0fc | 485 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) |
571d5972 | 486 | seq_puts(s, ",cifsacl"); |
8616e0fc | 487 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) |
571d5972 | 488 | seq_puts(s, ",dynperm"); |
34c80b1d | 489 | if (root->d_sb->s_flags & MS_POSIXACL) |
571d5972 | 490 | seq_puts(s, ",acl"); |
736a3320 | 491 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) |
571d5972 | 492 | seq_puts(s, ",mfsymlinks"); |
476428f8 | 493 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE) |
571d5972 | 494 | seq_puts(s, ",fsc"); |
71c424ba | 495 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC) |
571d5972 | 496 | seq_puts(s, ",nostrictsync"); |
71c424ba | 497 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
571d5972 | 498 | seq_puts(s, ",noperm"); |
3c7c87fd | 499 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID) |
1f68233c EB |
500 | seq_printf(s, ",backupuid=%u", |
501 | from_kuid_munged(&init_user_ns, | |
502 | cifs_sb->mnt_backupuid)); | |
3c7c87fd | 503 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) |
1f68233c EB |
504 | seq_printf(s, ",backupgid=%u", |
505 | from_kgid_munged(&init_user_ns, | |
506 | cifs_sb->mnt_backupgid)); | |
8616e0fc | 507 | |
28f88810 SP |
508 | seq_printf(s, ",rsize=%u", cifs_sb->rsize); |
509 | seq_printf(s, ",wsize=%u", cifs_sb->wsize); | |
6d20e840 | 510 | /* convert actimeo and display it in seconds */ |
156d1790 | 511 | seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ); |
8616e0fc | 512 | |
1da177e4 LT |
513 | return 0; |
514 | } | |
515 | ||
42faad99 | 516 | static void cifs_umount_begin(struct super_block *sb) |
68058e75 | 517 | { |
42faad99 | 518 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
96daf2b0 | 519 | struct cifs_tcon *tcon; |
68058e75 | 520 | |
4523cc30 | 521 | if (cifs_sb == NULL) |
9e2e85f8 SF |
522 | return; |
523 | ||
0d424ad0 | 524 | tcon = cifs_sb_master_tcon(cifs_sb); |
f1987b44 | 525 | |
3f9bcca7 | 526 | spin_lock(&cifs_tcp_ses_lock); |
ad8034f1 SF |
527 | if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) { |
528 | /* we have other mounts to same share or we have | |
529 | already tried to force umount this and woken up | |
530 | all waiting network requests, nothing to do */ | |
3f9bcca7 | 531 | spin_unlock(&cifs_tcp_ses_lock); |
ad8034f1 SF |
532 | return; |
533 | } else if (tcon->tc_count == 1) | |
5e1253b5 | 534 | tcon->tidStatus = CifsExiting; |
3f9bcca7 | 535 | spin_unlock(&cifs_tcp_ses_lock); |
5e1253b5 | 536 | |
3a5ff61c | 537 | /* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */ |
7b7abfe3 | 538 | /* cancel_notify_requests(tcon); */ |
50c2f753 | 539 | if (tcon->ses && tcon->ses->server) { |
f96637be | 540 | cifs_dbg(FYI, "wake up tasks now - umount begin not complete\n"); |
9e2e85f8 | 541 | wake_up_all(&tcon->ses->server->request_q); |
6ab16d24 SF |
542 | wake_up_all(&tcon->ses->server->response_q); |
543 | msleep(1); /* yield */ | |
544 | /* we have to kick the requests once more */ | |
545 | wake_up_all(&tcon->ses->server->response_q); | |
546 | msleep(1); | |
5e1253b5 | 547 | } |
68058e75 SF |
548 | |
549 | return; | |
550 | } | |
68058e75 | 551 | |
bf97d287 | 552 | #ifdef CONFIG_CIFS_STATS2 |
64132379 | 553 | static int cifs_show_stats(struct seq_file *s, struct dentry *root) |
bf97d287 SF |
554 | { |
555 | /* BB FIXME */ | |
556 | return 0; | |
557 | } | |
558 | #endif | |
559 | ||
1da177e4 LT |
560 | static int cifs_remount(struct super_block *sb, int *flags, char *data) |
561 | { | |
02b9984d | 562 | sync_filesystem(sb); |
1da177e4 LT |
563 | *flags |= MS_NODIRATIME; |
564 | return 0; | |
565 | } | |
566 | ||
45321ac5 | 567 | static int cifs_drop_inode(struct inode *inode) |
12420ac3 JL |
568 | { |
569 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
570 | ||
45321ac5 AV |
571 | /* no serverino => unconditional eviction */ |
572 | return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) || | |
573 | generic_drop_inode(inode); | |
12420ac3 JL |
574 | } |
575 | ||
ee9b6d61 | 576 | static const struct super_operations cifs_super_ops = { |
1da177e4 LT |
577 | .statfs = cifs_statfs, |
578 | .alloc_inode = cifs_alloc_inode, | |
579 | .destroy_inode = cifs_destroy_inode, | |
12420ac3 | 580 | .drop_inode = cifs_drop_inode, |
b57922d9 | 581 | .evict_inode = cifs_evict_inode, |
12420ac3 JL |
582 | /* .delete_inode = cifs_delete_inode, */ /* Do not need above |
583 | function unless later we add lazy close of inodes or unless the | |
50c2f753 SF |
584 | kernel forgets to call us with the same number of releases (closes) |
585 | as opens */ | |
1da177e4 | 586 | .show_options = cifs_show_options, |
7b7abfe3 | 587 | .umount_begin = cifs_umount_begin, |
1da177e4 | 588 | .remount_fs = cifs_remount, |
bf97d287 | 589 | #ifdef CONFIG_CIFS_STATS2 |
f46d3e11 | 590 | .show_stats = cifs_show_stats, |
bf97d287 | 591 | #endif |
1da177e4 LT |
592 | }; |
593 | ||
f87d39d9 SF |
594 | /* |
595 | * Get root dentry from superblock according to prefix path mount option. | |
596 | * Return dentry with refcount + 1 on success and NULL otherwise. | |
597 | */ | |
598 | static struct dentry * | |
599 | cifs_get_root(struct smb_vol *vol, struct super_block *sb) | |
600 | { | |
fec11dd9 | 601 | struct dentry *dentry; |
f87d39d9 | 602 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
fec11dd9 AV |
603 | char *full_path = NULL; |
604 | char *s, *p; | |
f87d39d9 SF |
605 | char sep; |
606 | ||
6d3ea7e4 SF |
607 | full_path = cifs_build_path_to_root(vol, cifs_sb, |
608 | cifs_sb_master_tcon(cifs_sb)); | |
f87d39d9 | 609 | if (full_path == NULL) |
9403c9c5 | 610 | return ERR_PTR(-ENOMEM); |
f87d39d9 | 611 | |
f96637be | 612 | cifs_dbg(FYI, "Get root dentry for %s\n", full_path); |
f87d39d9 | 613 | |
f87d39d9 | 614 | sep = CIFS_DIR_SEP(cifs_sb); |
fec11dd9 AV |
615 | dentry = dget(sb->s_root); |
616 | p = s = full_path; | |
617 | ||
618 | do { | |
2b0143b5 | 619 | struct inode *dir = d_inode(dentry); |
fec11dd9 AV |
620 | struct dentry *child; |
621 | ||
5b980b01 PS |
622 | if (!dir) { |
623 | dput(dentry); | |
624 | dentry = ERR_PTR(-ENOENT); | |
625 | break; | |
626 | } | |
ce2ac521 JL |
627 | if (!S_ISDIR(dir->i_mode)) { |
628 | dput(dentry); | |
629 | dentry = ERR_PTR(-ENOTDIR); | |
630 | break; | |
631 | } | |
5b980b01 | 632 | |
fec11dd9 AV |
633 | /* skip separators */ |
634 | while (*s == sep) | |
635 | s++; | |
636 | if (!*s) | |
637 | break; | |
638 | p = s++; | |
639 | /* next separator */ | |
640 | while (*s && *s != sep) | |
641 | s++; | |
642 | ||
5955102c | 643 | inode_lock(dir); |
fec11dd9 | 644 | child = lookup_one_len(p, dentry, s - p); |
5955102c | 645 | inode_unlock(dir); |
fec11dd9 AV |
646 | dput(dentry); |
647 | dentry = child; | |
648 | } while (!IS_ERR(dentry)); | |
f87d39d9 | 649 | kfree(full_path); |
fec11dd9 | 650 | return dentry; |
f87d39d9 SF |
651 | } |
652 | ||
ee01a14d AV |
653 | static int cifs_set_super(struct super_block *sb, void *data) |
654 | { | |
655 | struct cifs_mnt_data *mnt_data = data; | |
656 | sb->s_fs_info = mnt_data->cifs_sb; | |
657 | return set_anon_super(sb, NULL); | |
658 | } | |
659 | ||
d753ed97 AV |
660 | static struct dentry * |
661 | cifs_do_mount(struct file_system_type *fs_type, | |
724d9f1c | 662 | int flags, const char *dev_name, void *data) |
1da177e4 LT |
663 | { |
664 | int rc; | |
db719222 | 665 | struct super_block *sb; |
724d9f1c PS |
666 | struct cifs_sb_info *cifs_sb; |
667 | struct smb_vol *volume_info; | |
25c7f41e | 668 | struct cifs_mnt_data mnt_data; |
724d9f1c | 669 | struct dentry *root; |
1da177e4 | 670 | |
f96637be | 671 | cifs_dbg(FYI, "Devname: %s flags: %d\n", dev_name, flags); |
1da177e4 | 672 | |
04db79b0 JL |
673 | volume_info = cifs_get_volume_info((char *)data, dev_name); |
674 | if (IS_ERR(volume_info)) | |
675 | return ERR_CAST(volume_info); | |
724d9f1c PS |
676 | |
677 | cifs_sb = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL); | |
678 | if (cifs_sb == NULL) { | |
679 | root = ERR_PTR(-ENOMEM); | |
5c4f1ad7 | 680 | goto out_nls; |
724d9f1c PS |
681 | } |
682 | ||
5d3bc605 AV |
683 | cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL); |
684 | if (cifs_sb->mountdata == NULL) { | |
685 | root = ERR_PTR(-ENOMEM); | |
5c4f1ad7 | 686 | goto out_cifs_sb; |
5d3bc605 AV |
687 | } |
688 | ||
724d9f1c PS |
689 | cifs_setup_cifs_sb(volume_info, cifs_sb); |
690 | ||
97d1152a AV |
691 | rc = cifs_mount(cifs_sb, volume_info); |
692 | if (rc) { | |
693 | if (!(flags & MS_SILENT)) | |
f96637be JP |
694 | cifs_dbg(VFS, "cifs_mount failed w/return code = %d\n", |
695 | rc); | |
97d1152a | 696 | root = ERR_PTR(rc); |
5c4f1ad7 | 697 | goto out_mountdata; |
97d1152a AV |
698 | } |
699 | ||
25c7f41e PS |
700 | mnt_data.vol = volume_info; |
701 | mnt_data.cifs_sb = cifs_sb; | |
702 | mnt_data.flags = flags; | |
703 | ||
9249e17f DH |
704 | /* BB should we make this contingent on mount parm? */ |
705 | flags |= MS_NODIRATIME | MS_NOATIME; | |
706 | ||
707 | sb = sget(fs_type, cifs_match_super, cifs_set_super, flags, &mnt_data); | |
724d9f1c | 708 | if (IS_ERR(sb)) { |
724d9f1c | 709 | root = ERR_CAST(sb); |
97d1152a | 710 | cifs_umount(cifs_sb); |
d757d71b | 711 | goto out; |
724d9f1c | 712 | } |
1da177e4 | 713 | |
ee01a14d | 714 | if (sb->s_root) { |
f96637be | 715 | cifs_dbg(FYI, "Use existing superblock\n"); |
97d1152a | 716 | cifs_umount(cifs_sb); |
5c4f1ad7 | 717 | } else { |
5c4f1ad7 AV |
718 | rc = cifs_read_super(sb); |
719 | if (rc) { | |
720 | root = ERR_PTR(rc); | |
721 | goto out_super; | |
722 | } | |
b2e5cd33 | 723 | |
5c4f1ad7 | 724 | sb->s_flags |= MS_ACTIVE; |
1da177e4 | 725 | } |
724d9f1c | 726 | |
f87d39d9 | 727 | root = cifs_get_root(volume_info, sb); |
9403c9c5 | 728 | if (IS_ERR(root)) |
f87d39d9 | 729 | goto out_super; |
25c7f41e | 730 | |
f96637be | 731 | cifs_dbg(FYI, "dentry root is: %p\n", root); |
641a58d6 | 732 | goto out; |
724d9f1c | 733 | |
641a58d6 | 734 | out_super: |
641a58d6 | 735 | deactivate_locked_super(sb); |
641a58d6 | 736 | out: |
f9e59bcb | 737 | cifs_cleanup_volume_info(volume_info); |
724d9f1c | 738 | return root; |
5c4f1ad7 AV |
739 | |
740 | out_mountdata: | |
741 | kfree(cifs_sb->mountdata); | |
742 | out_cifs_sb: | |
743 | kfree(cifs_sb); | |
744 | out_nls: | |
745 | unload_nls(volume_info->local_nls); | |
746 | goto out; | |
1da177e4 LT |
747 | } |
748 | ||
08bc0353 JL |
749 | static ssize_t |
750 | cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter) | |
751 | { | |
752 | ssize_t rc; | |
753 | struct inode *inode = file_inode(iocb->ki_filp); | |
754 | ||
755 | rc = cifs_revalidate_mapping(inode); | |
756 | if (rc) | |
757 | return rc; | |
758 | ||
759 | return generic_file_read_iter(iocb, iter); | |
760 | } | |
761 | ||
3dae8750 | 762 | static ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
1da177e4 | 763 | { |
496ad9aa | 764 | struct inode *inode = file_inode(iocb->ki_filp); |
c11f1df5 | 765 | struct cifsInodeInfo *cinode = CIFS_I(inode); |
1da177e4 | 766 | ssize_t written; |
72432ffc | 767 | int rc; |
1da177e4 | 768 | |
c11f1df5 SP |
769 | written = cifs_get_writer(cinode); |
770 | if (written) | |
771 | return written; | |
772 | ||
3dae8750 | 773 | written = generic_file_write_iter(iocb, from); |
72432ffc | 774 | |
18cceb6a | 775 | if (CIFS_CACHE_WRITE(CIFS_I(inode))) |
c11f1df5 | 776 | goto out; |
72432ffc PS |
777 | |
778 | rc = filemap_fdatawrite(inode->i_mapping); | |
779 | if (rc) | |
3dae8750 | 780 | cifs_dbg(FYI, "cifs_file_write_iter: %d rc on %p inode\n", |
f96637be | 781 | rc, inode); |
72432ffc | 782 | |
c11f1df5 SP |
783 | out: |
784 | cifs_put_writer(cinode); | |
1da177e4 LT |
785 | return written; |
786 | } | |
787 | ||
965c8e59 | 788 | static loff_t cifs_llseek(struct file *file, loff_t offset, int whence) |
c32a0b68 | 789 | { |
06222e49 | 790 | /* |
965c8e59 | 791 | * whence == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate |
06222e49 JB |
792 | * the cached file length |
793 | */ | |
965c8e59 | 794 | if (whence != SEEK_SET && whence != SEEK_CUR) { |
6feb9891 | 795 | int rc; |
496ad9aa | 796 | struct inode *inode = file_inode(file); |
6feb9891 PS |
797 | |
798 | /* | |
799 | * We need to be sure that all dirty pages are written and the | |
800 | * server has the newest file length. | |
801 | */ | |
18cceb6a | 802 | if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping && |
6feb9891 PS |
803 | inode->i_mapping->nrpages != 0) { |
804 | rc = filemap_fdatawait(inode->i_mapping); | |
156ecb2d SF |
805 | if (rc) { |
806 | mapping_set_error(inode->i_mapping, rc); | |
807 | return rc; | |
808 | } | |
6feb9891 PS |
809 | } |
810 | /* | |
811 | * Some applications poll for the file length in this strange | |
812 | * way so we must seek to end on non-oplocked files by | |
813 | * setting the revalidate time to zero. | |
814 | */ | |
815 | CIFS_I(inode)->time = 0; | |
816 | ||
817 | rc = cifs_revalidate_file_attr(file); | |
818 | if (rc < 0) | |
819 | return (loff_t)rc; | |
c32a0b68 | 820 | } |
965c8e59 | 821 | return generic_file_llseek(file, offset, whence); |
c32a0b68 SF |
822 | } |
823 | ||
e6f5c789 JL |
824 | static int |
825 | cifs_setlease(struct file *file, long arg, struct file_lock **lease, void **priv) | |
84210e91 | 826 | { |
18cceb6a PS |
827 | /* |
828 | * Note that this is called by vfs setlease with i_lock held to | |
829 | * protect *lease from going away. | |
830 | */ | |
496ad9aa | 831 | struct inode *inode = file_inode(file); |
ba00ba64 | 832 | struct cifsFileInfo *cfile = file->private_data; |
84210e91 SF |
833 | |
834 | if (!(S_ISREG(inode->i_mode))) | |
835 | return -EINVAL; | |
836 | ||
02440806 JL |
837 | /* Check if file is oplocked if this is request for new lease */ |
838 | if (arg == F_UNLCK || | |
839 | ((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) || | |
18cceb6a | 840 | ((arg == F_WRLCK) && CIFS_CACHE_WRITE(CIFS_I(inode)))) |
e6f5c789 | 841 | return generic_setlease(file, arg, lease, priv); |
13cfb733 | 842 | else if (tlink_tcon(cfile->tlink)->local_lease && |
18cceb6a PS |
843 | !CIFS_CACHE_READ(CIFS_I(inode))) |
844 | /* | |
845 | * If the server claims to support oplock on this file, then we | |
846 | * still need to check oplock even if the local_lease mount | |
847 | * option is set, but there are servers which do not support | |
848 | * oplock for which this mount option may be useful if the user | |
849 | * knows that the file won't be changed on the server by anyone | |
850 | * else. | |
851 | */ | |
e6f5c789 | 852 | return generic_setlease(file, arg, lease, priv); |
51ee4b84 | 853 | else |
84210e91 SF |
854 | return -EAGAIN; |
855 | } | |
84210e91 | 856 | |
e6ab1582 | 857 | struct file_system_type cifs_fs_type = { |
1da177e4 LT |
858 | .owner = THIS_MODULE, |
859 | .name = "cifs", | |
d753ed97 | 860 | .mount = cifs_do_mount, |
6d686175 | 861 | .kill_sb = cifs_kill_sb, |
1da177e4 LT |
862 | /* .fs_flags */ |
863 | }; | |
3e64fe5b | 864 | MODULE_ALIAS_FS("cifs"); |
754661f1 | 865 | const struct inode_operations cifs_dir_inode_ops = { |
1da177e4 | 866 | .create = cifs_create, |
d2c12719 | 867 | .atomic_open = cifs_atomic_open, |
1da177e4 LT |
868 | .lookup = cifs_lookup, |
869 | .getattr = cifs_getattr, | |
870 | .unlink = cifs_unlink, | |
871 | .link = cifs_hardlink, | |
872 | .mkdir = cifs_mkdir, | |
873 | .rmdir = cifs_rmdir, | |
7c33d597 | 874 | .rename2 = cifs_rename2, |
1da177e4 LT |
875 | .permission = cifs_permission, |
876 | /* revalidate:cifs_revalidate, */ | |
877 | .setattr = cifs_setattr, | |
878 | .symlink = cifs_symlink, | |
879 | .mknod = cifs_mknod, | |
880 | #ifdef CONFIG_CIFS_XATTR | |
881 | .setxattr = cifs_setxattr, | |
882 | .getxattr = cifs_getxattr, | |
883 | .listxattr = cifs_listxattr, | |
884 | .removexattr = cifs_removexattr, | |
885 | #endif | |
886 | }; | |
887 | ||
754661f1 | 888 | const struct inode_operations cifs_file_inode_ops = { |
1da177e4 LT |
889 | /* revalidate:cifs_revalidate, */ |
890 | .setattr = cifs_setattr, | |
891 | .getattr = cifs_getattr, /* do we need this anymore? */ | |
1da177e4 LT |
892 | .permission = cifs_permission, |
893 | #ifdef CONFIG_CIFS_XATTR | |
894 | .setxattr = cifs_setxattr, | |
895 | .getxattr = cifs_getxattr, | |
896 | .listxattr = cifs_listxattr, | |
897 | .removexattr = cifs_removexattr, | |
50c2f753 | 898 | #endif |
1da177e4 LT |
899 | }; |
900 | ||
754661f1 | 901 | const struct inode_operations cifs_symlink_inode_ops = { |
50c2f753 | 902 | .readlink = generic_readlink, |
6b255391 | 903 | .get_link = cifs_get_link, |
1da177e4 LT |
904 | .permission = cifs_permission, |
905 | /* BB add the following two eventually */ | |
906 | /* revalidate: cifs_revalidate, | |
907 | setattr: cifs_notify_change, *//* BB do we need notify change */ | |
908 | #ifdef CONFIG_CIFS_XATTR | |
909 | .setxattr = cifs_setxattr, | |
910 | .getxattr = cifs_getxattr, | |
911 | .listxattr = cifs_listxattr, | |
912 | .removexattr = cifs_removexattr, | |
50c2f753 | 913 | #endif |
1da177e4 LT |
914 | }; |
915 | ||
04b38d60 CH |
916 | static int cifs_clone_file_range(struct file *src_file, loff_t off, |
917 | struct file *dst_file, loff_t destoff, u64 len) | |
918 | { | |
919 | struct inode *src_inode = file_inode(src_file); | |
920 | struct inode *target_inode = file_inode(dst_file); | |
921 | struct cifsFileInfo *smb_file_src = src_file->private_data; | |
922 | struct cifsFileInfo *smb_file_target = dst_file->private_data; | |
04b38d60 CH |
923 | struct cifs_tcon *target_tcon = tlink_tcon(smb_file_target->tlink); |
924 | unsigned int xid; | |
925 | int rc; | |
926 | ||
927 | cifs_dbg(FYI, "clone range\n"); | |
928 | ||
929 | xid = get_xid(); | |
930 | ||
931 | if (!src_file->private_data || !dst_file->private_data) { | |
932 | rc = -EBADF; | |
933 | cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n"); | |
934 | goto out; | |
935 | } | |
936 | ||
937 | /* | |
938 | * Note: cifs case is easier than btrfs since server responsible for | |
939 | * checks for proper open modes and file type and if it wants | |
940 | * server could even support copy of range where source = target | |
941 | */ | |
942 | lock_two_nondirectories(target_inode, src_inode); | |
943 | ||
944 | if (len == 0) | |
945 | len = src_inode->i_size - off; | |
946 | ||
947 | cifs_dbg(FYI, "about to flush pages\n"); | |
948 | /* should we flush first and last page first */ | |
949 | truncate_inode_pages_range(&target_inode->i_data, destoff, | |
950 | PAGE_CACHE_ALIGN(destoff + len)-1); | |
951 | ||
952 | if (target_tcon->ses->server->ops->duplicate_extents) | |
953 | rc = target_tcon->ses->server->ops->duplicate_extents(xid, | |
954 | smb_file_src, smb_file_target, off, len, destoff); | |
955 | else | |
956 | rc = -EOPNOTSUPP; | |
957 | ||
958 | /* force revalidate of size and timestamps of target file now | |
959 | that target is updated on the server */ | |
960 | CIFS_I(target_inode)->time = 0; | |
04b38d60 CH |
961 | /* although unlocking in the reverse order from locking is not |
962 | strictly necessary here it is a little cleaner to be consistent */ | |
963 | unlock_two_nondirectories(src_inode, target_inode); | |
964 | out: | |
965 | free_xid(xid); | |
966 | return rc; | |
967 | } | |
968 | ||
4b6f5d20 | 969 | const struct file_operations cifs_file_ops = { |
08bc0353 | 970 | .read_iter = cifs_loose_read_iter, |
3dae8750 | 971 | .write_iter = cifs_file_write_iter, |
1da177e4 LT |
972 | .open = cifs_open, |
973 | .release = cifs_close, | |
974 | .lock = cifs_lock, | |
975 | .fsync = cifs_fsync, | |
976 | .flush = cifs_flush, | |
977 | .mmap = cifs_file_mmap, | |
5ffc4ef4 | 978 | .splice_read = generic_file_splice_read, |
c32a0b68 | 979 | .llseek = cifs_llseek, |
f9ddcca4 | 980 | .unlocked_ioctl = cifs_ioctl, |
04b38d60 | 981 | .clone_file_range = cifs_clone_file_range, |
84210e91 | 982 | .setlease = cifs_setlease, |
31742c5a | 983 | .fallocate = cifs_fallocate, |
1da177e4 LT |
984 | }; |
985 | ||
8be7e6ba | 986 | const struct file_operations cifs_file_strict_ops = { |
e6a7bcb4 | 987 | .read_iter = cifs_strict_readv, |
3dae8750 | 988 | .write_iter = cifs_strict_writev, |
8be7e6ba PS |
989 | .open = cifs_open, |
990 | .release = cifs_close, | |
991 | .lock = cifs_lock, | |
992 | .fsync = cifs_strict_fsync, | |
993 | .flush = cifs_flush, | |
7a6a19b1 | 994 | .mmap = cifs_file_strict_mmap, |
8be7e6ba PS |
995 | .splice_read = generic_file_splice_read, |
996 | .llseek = cifs_llseek, | |
8be7e6ba | 997 | .unlocked_ioctl = cifs_ioctl, |
04b38d60 CH |
998 | .clone_file_range = cifs_clone_file_range, |
999 | .clone_file_range = cifs_clone_file_range, | |
8be7e6ba | 1000 | .setlease = cifs_setlease, |
31742c5a | 1001 | .fallocate = cifs_fallocate, |
8be7e6ba PS |
1002 | }; |
1003 | ||
4b6f5d20 | 1004 | const struct file_operations cifs_file_direct_ops = { |
0b81c1c4 | 1005 | /* BB reevaluate whether they can be done with directio, no cache */ |
e6a7bcb4 | 1006 | .read_iter = cifs_user_readv, |
3dae8750 | 1007 | .write_iter = cifs_user_writev, |
1da177e4 LT |
1008 | .open = cifs_open, |
1009 | .release = cifs_close, | |
1010 | .lock = cifs_lock, | |
1011 | .fsync = cifs_fsync, | |
1012 | .flush = cifs_flush, | |
a994b8fa | 1013 | .mmap = cifs_file_mmap, |
5ffc4ef4 | 1014 | .splice_read = generic_file_splice_read, |
f9ddcca4 | 1015 | .unlocked_ioctl = cifs_ioctl, |
04b38d60 | 1016 | .clone_file_range = cifs_clone_file_range, |
c32a0b68 | 1017 | .llseek = cifs_llseek, |
84210e91 | 1018 | .setlease = cifs_setlease, |
31742c5a | 1019 | .fallocate = cifs_fallocate, |
1da177e4 | 1020 | }; |
8be7e6ba | 1021 | |
4b6f5d20 | 1022 | const struct file_operations cifs_file_nobrl_ops = { |
08bc0353 | 1023 | .read_iter = cifs_loose_read_iter, |
3dae8750 | 1024 | .write_iter = cifs_file_write_iter, |
87c89dd7 SF |
1025 | .open = cifs_open, |
1026 | .release = cifs_close, | |
1027 | .fsync = cifs_fsync, | |
1028 | .flush = cifs_flush, | |
1029 | .mmap = cifs_file_mmap, | |
5ffc4ef4 | 1030 | .splice_read = generic_file_splice_read, |
c32a0b68 | 1031 | .llseek = cifs_llseek, |
f9ddcca4 | 1032 | .unlocked_ioctl = cifs_ioctl, |
04b38d60 | 1033 | .clone_file_range = cifs_clone_file_range, |
84210e91 | 1034 | .setlease = cifs_setlease, |
31742c5a | 1035 | .fallocate = cifs_fallocate, |
8b94bcb9 SF |
1036 | }; |
1037 | ||
8be7e6ba | 1038 | const struct file_operations cifs_file_strict_nobrl_ops = { |
e6a7bcb4 | 1039 | .read_iter = cifs_strict_readv, |
3dae8750 | 1040 | .write_iter = cifs_strict_writev, |
8be7e6ba PS |
1041 | .open = cifs_open, |
1042 | .release = cifs_close, | |
1043 | .fsync = cifs_strict_fsync, | |
1044 | .flush = cifs_flush, | |
7a6a19b1 | 1045 | .mmap = cifs_file_strict_mmap, |
8be7e6ba PS |
1046 | .splice_read = generic_file_splice_read, |
1047 | .llseek = cifs_llseek, | |
8be7e6ba | 1048 | .unlocked_ioctl = cifs_ioctl, |
04b38d60 | 1049 | .clone_file_range = cifs_clone_file_range, |
8be7e6ba | 1050 | .setlease = cifs_setlease, |
31742c5a | 1051 | .fallocate = cifs_fallocate, |
8be7e6ba PS |
1052 | }; |
1053 | ||
4b6f5d20 | 1054 | const struct file_operations cifs_file_direct_nobrl_ops = { |
0b81c1c4 | 1055 | /* BB reevaluate whether they can be done with directio, no cache */ |
e6a7bcb4 | 1056 | .read_iter = cifs_user_readv, |
3dae8750 | 1057 | .write_iter = cifs_user_writev, |
87c89dd7 SF |
1058 | .open = cifs_open, |
1059 | .release = cifs_close, | |
1060 | .fsync = cifs_fsync, | |
1061 | .flush = cifs_flush, | |
810627a0 | 1062 | .mmap = cifs_file_mmap, |
5ffc4ef4 | 1063 | .splice_read = generic_file_splice_read, |
f9ddcca4 | 1064 | .unlocked_ioctl = cifs_ioctl, |
04b38d60 | 1065 | .clone_file_range = cifs_clone_file_range, |
c32a0b68 | 1066 | .llseek = cifs_llseek, |
84210e91 | 1067 | .setlease = cifs_setlease, |
31742c5a | 1068 | .fallocate = cifs_fallocate, |
8b94bcb9 | 1069 | }; |
1da177e4 | 1070 | |
4b6f5d20 | 1071 | const struct file_operations cifs_dir_ops = { |
be4ccdcc | 1072 | .iterate = cifs_readdir, |
1da177e4 LT |
1073 | .release = cifs_closedir, |
1074 | .read = generic_read_dir, | |
f9ddcca4 | 1075 | .unlocked_ioctl = cifs_ioctl, |
04b38d60 | 1076 | .clone_file_range = cifs_clone_file_range, |
3222a3e5 | 1077 | .llseek = generic_file_llseek, |
1da177e4 LT |
1078 | }; |
1079 | ||
1080 | static void | |
51cc5068 | 1081 | cifs_init_once(void *inode) |
1da177e4 LT |
1082 | { |
1083 | struct cifsInodeInfo *cifsi = inode; | |
1084 | ||
a35afb83 | 1085 | inode_init_once(&cifsi->vfs_inode); |
1b4b55a1 | 1086 | init_rwsem(&cifsi->lock_sem); |
1da177e4 LT |
1087 | } |
1088 | ||
9ee108b2 | 1089 | static int __init |
1da177e4 LT |
1090 | cifs_init_inodecache(void) |
1091 | { | |
1092 | cifs_inode_cachep = kmem_cache_create("cifs_inode_cache", | |
26f57364 | 1093 | sizeof(struct cifsInodeInfo), |
fffb60f9 | 1094 | 0, (SLAB_RECLAIM_ACCOUNT| |
5d097056 | 1095 | SLAB_MEM_SPREAD|SLAB_ACCOUNT), |
20c2df83 | 1096 | cifs_init_once); |
1da177e4 LT |
1097 | if (cifs_inode_cachep == NULL) |
1098 | return -ENOMEM; | |
1099 | ||
1100 | return 0; | |
1101 | } | |
1102 | ||
1103 | static void | |
1104 | cifs_destroy_inodecache(void) | |
1105 | { | |
8c0a8537 KS |
1106 | /* |
1107 | * Make sure all delayed rcu free inodes are flushed before we | |
1108 | * destroy cache. | |
1109 | */ | |
1110 | rcu_barrier(); | |
1a1d92c1 | 1111 | kmem_cache_destroy(cifs_inode_cachep); |
1da177e4 LT |
1112 | } |
1113 | ||
1114 | static int | |
1115 | cifs_init_request_bufs(void) | |
1116 | { | |
3792c173 PS |
1117 | size_t max_hdr_size = MAX_CIFS_HDR_SIZE; |
1118 | #ifdef CONFIG_CIFS_SMB2 | |
1119 | /* | |
1120 | * SMB2 maximum header size is bigger than CIFS one - no problems to | |
1121 | * allocate some more bytes for CIFS. | |
1122 | */ | |
1123 | max_hdr_size = MAX_SMB2_HDR_SIZE; | |
1124 | #endif | |
4523cc30 | 1125 | if (CIFSMaxBufSize < 8192) { |
1da177e4 LT |
1126 | /* Buffer size can not be smaller than 2 * PATH_MAX since maximum |
1127 | Unicode path name has to fit in any SMB/CIFS path based frames */ | |
1128 | CIFSMaxBufSize = 8192; | |
1129 | } else if (CIFSMaxBufSize > 1024*127) { | |
1130 | CIFSMaxBufSize = 1024 * 127; | |
1131 | } else { | |
1132 | CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/ | |
1133 | } | |
f96637be JP |
1134 | /* |
1135 | cifs_dbg(VFS, "CIFSMaxBufSize %d 0x%x\n", | |
1136 | CIFSMaxBufSize, CIFSMaxBufSize); | |
1137 | */ | |
1da177e4 | 1138 | cifs_req_cachep = kmem_cache_create("cifs_request", |
3792c173 | 1139 | CIFSMaxBufSize + max_hdr_size, 0, |
20c2df83 | 1140 | SLAB_HWCACHE_ALIGN, NULL); |
1da177e4 LT |
1141 | if (cifs_req_cachep == NULL) |
1142 | return -ENOMEM; | |
1143 | ||
4523cc30 | 1144 | if (cifs_min_rcv < 1) |
1da177e4 LT |
1145 | cifs_min_rcv = 1; |
1146 | else if (cifs_min_rcv > 64) { | |
1147 | cifs_min_rcv = 64; | |
f96637be | 1148 | cifs_dbg(VFS, "cifs_min_rcv set to maximum (64)\n"); |
1da177e4 LT |
1149 | } |
1150 | ||
93d2341c MD |
1151 | cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv, |
1152 | cifs_req_cachep); | |
1da177e4 | 1153 | |
4523cc30 | 1154 | if (cifs_req_poolp == NULL) { |
1da177e4 LT |
1155 | kmem_cache_destroy(cifs_req_cachep); |
1156 | return -ENOMEM; | |
1157 | } | |
ec637e3f | 1158 | /* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and |
1da177e4 LT |
1159 | almost all handle based requests (but not write response, nor is it |
1160 | sufficient for path based requests). A smaller size would have | |
50c2f753 | 1161 | been more efficient (compacting multiple slab items on one 4k page) |
1da177e4 LT |
1162 | for the case in which debug was on, but this larger size allows |
1163 | more SMBs to use small buffer alloc and is still much more | |
6dc0f87e | 1164 | efficient to alloc 1 per page off the slab compared to 17K (5page) |
1da177e4 LT |
1165 | alloc of large cifs buffers even when page debugging is on */ |
1166 | cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq", | |
6dc0f87e | 1167 | MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN, |
20c2df83 | 1168 | NULL); |
1da177e4 LT |
1169 | if (cifs_sm_req_cachep == NULL) { |
1170 | mempool_destroy(cifs_req_poolp); | |
1171 | kmem_cache_destroy(cifs_req_cachep); | |
6dc0f87e | 1172 | return -ENOMEM; |
1da177e4 LT |
1173 | } |
1174 | ||
4523cc30 | 1175 | if (cifs_min_small < 2) |
1da177e4 LT |
1176 | cifs_min_small = 2; |
1177 | else if (cifs_min_small > 256) { | |
1178 | cifs_min_small = 256; | |
f96637be | 1179 | cifs_dbg(FYI, "cifs_min_small set to maximum (256)\n"); |
1da177e4 LT |
1180 | } |
1181 | ||
93d2341c MD |
1182 | cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small, |
1183 | cifs_sm_req_cachep); | |
1da177e4 | 1184 | |
4523cc30 | 1185 | if (cifs_sm_req_poolp == NULL) { |
1da177e4 LT |
1186 | mempool_destroy(cifs_req_poolp); |
1187 | kmem_cache_destroy(cifs_req_cachep); | |
1188 | kmem_cache_destroy(cifs_sm_req_cachep); | |
1189 | return -ENOMEM; | |
1190 | } | |
1191 | ||
1192 | return 0; | |
1193 | } | |
1194 | ||
1195 | static void | |
1196 | cifs_destroy_request_bufs(void) | |
1197 | { | |
1198 | mempool_destroy(cifs_req_poolp); | |
1a1d92c1 | 1199 | kmem_cache_destroy(cifs_req_cachep); |
1da177e4 | 1200 | mempool_destroy(cifs_sm_req_poolp); |
1a1d92c1 | 1201 | kmem_cache_destroy(cifs_sm_req_cachep); |
1da177e4 LT |
1202 | } |
1203 | ||
1204 | static int | |
1205 | cifs_init_mids(void) | |
1206 | { | |
1207 | cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids", | |
26f57364 SF |
1208 | sizeof(struct mid_q_entry), 0, |
1209 | SLAB_HWCACHE_ALIGN, NULL); | |
1da177e4 LT |
1210 | if (cifs_mid_cachep == NULL) |
1211 | return -ENOMEM; | |
1212 | ||
93d2341c MD |
1213 | /* 3 is a reasonable minimum number of simultaneous operations */ |
1214 | cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep); | |
4523cc30 | 1215 | if (cifs_mid_poolp == NULL) { |
1da177e4 LT |
1216 | kmem_cache_destroy(cifs_mid_cachep); |
1217 | return -ENOMEM; | |
1218 | } | |
1219 | ||
1da177e4 LT |
1220 | return 0; |
1221 | } | |
1222 | ||
1223 | static void | |
1224 | cifs_destroy_mids(void) | |
1225 | { | |
1226 | mempool_destroy(cifs_mid_poolp); | |
1a1d92c1 | 1227 | kmem_cache_destroy(cifs_mid_cachep); |
1da177e4 LT |
1228 | } |
1229 | ||
1da177e4 LT |
1230 | static int __init |
1231 | init_cifs(void) | |
1232 | { | |
1233 | int rc = 0; | |
1da177e4 | 1234 | cifs_proc_init(); |
e7ddee90 | 1235 | INIT_LIST_HEAD(&cifs_tcp_ses_list); |
0eff0e26 | 1236 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
4ca9c190 SF |
1237 | INIT_LIST_HEAD(&GlobalDnotifyReqList); |
1238 | INIT_LIST_HEAD(&GlobalDnotifyRsp_Q); | |
0eff0e26 | 1239 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
1da177e4 LT |
1240 | /* |
1241 | * Initialize Global counters | |
1242 | */ | |
1243 | atomic_set(&sesInfoAllocCount, 0); | |
1244 | atomic_set(&tconInfoAllocCount, 0); | |
6dc0f87e | 1245 | atomic_set(&tcpSesAllocCount, 0); |
1da177e4 LT |
1246 | atomic_set(&tcpSesReconnectCount, 0); |
1247 | atomic_set(&tconInfoReconnectCount, 0); | |
1248 | ||
1249 | atomic_set(&bufAllocCount, 0); | |
4498eed5 SF |
1250 | atomic_set(&smBufAllocCount, 0); |
1251 | #ifdef CONFIG_CIFS_STATS2 | |
1252 | atomic_set(&totBufAllocCount, 0); | |
1253 | atomic_set(&totSmBufAllocCount, 0); | |
1254 | #endif /* CONFIG_CIFS_STATS2 */ | |
1255 | ||
1da177e4 LT |
1256 | atomic_set(&midCount, 0); |
1257 | GlobalCurrentXid = 0; | |
1258 | GlobalTotalActiveXid = 0; | |
1259 | GlobalMaxActiveXid = 0; | |
3f9bcca7 | 1260 | spin_lock_init(&cifs_tcp_ses_lock); |
4477288a | 1261 | spin_lock_init(&cifs_file_list_lock); |
1da177e4 LT |
1262 | spin_lock_init(&GlobalMid_Lock); |
1263 | ||
4523cc30 | 1264 | if (cifs_max_pending < 2) { |
1da177e4 | 1265 | cifs_max_pending = 2; |
f96637be | 1266 | cifs_dbg(FYI, "cifs_max_pending set to min of 2\n"); |
10b9b98e PS |
1267 | } else if (cifs_max_pending > CIFS_MAX_REQ) { |
1268 | cifs_max_pending = CIFS_MAX_REQ; | |
f96637be JP |
1269 | cifs_dbg(FYI, "cifs_max_pending set to max of %u\n", |
1270 | CIFS_MAX_REQ); | |
1da177e4 LT |
1271 | } |
1272 | ||
da472fc8 JL |
1273 | cifsiod_wq = alloc_workqueue("cifsiod", WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
1274 | if (!cifsiod_wq) { | |
1275 | rc = -ENOMEM; | |
1276 | goto out_clean_proc; | |
1277 | } | |
1278 | ||
f579cf3c SJ |
1279 | rc = cifs_fscache_register(); |
1280 | if (rc) | |
da472fc8 | 1281 | goto out_destroy_wq; |
f579cf3c | 1282 | |
1da177e4 | 1283 | rc = cifs_init_inodecache(); |
45af7a0f | 1284 | if (rc) |
d3bf5221 | 1285 | goto out_unreg_fscache; |
45af7a0f SF |
1286 | |
1287 | rc = cifs_init_mids(); | |
1288 | if (rc) | |
1289 | goto out_destroy_inodecache; | |
1290 | ||
1291 | rc = cifs_init_request_bufs(); | |
1292 | if (rc) | |
1293 | goto out_destroy_mids; | |
1294 | ||
84a15b93 JL |
1295 | #ifdef CONFIG_CIFS_UPCALL |
1296 | rc = register_key_type(&cifs_spnego_key_type); | |
1297 | if (rc) | |
4d79dba0 SP |
1298 | goto out_destroy_request_bufs; |
1299 | #endif /* CONFIG_CIFS_UPCALL */ | |
1300 | ||
1301 | #ifdef CONFIG_CIFS_ACL | |
1302 | rc = init_cifs_idmap(); | |
1303 | if (rc) | |
c4aca0c0 | 1304 | goto out_register_key_type; |
4d79dba0 SP |
1305 | #endif /* CONFIG_CIFS_ACL */ |
1306 | ||
1307 | rc = register_filesystem(&cifs_fs_type); | |
1308 | if (rc) | |
c4aca0c0 | 1309 | goto out_init_cifs_idmap; |
45af7a0f | 1310 | |
45af7a0f SF |
1311 | return 0; |
1312 | ||
c4aca0c0 | 1313 | out_init_cifs_idmap: |
4d79dba0 SP |
1314 | #ifdef CONFIG_CIFS_ACL |
1315 | exit_cifs_idmap(); | |
c4aca0c0 | 1316 | out_register_key_type: |
4d79dba0 | 1317 | #endif |
84a15b93 | 1318 | #ifdef CONFIG_CIFS_UPCALL |
4d79dba0 | 1319 | unregister_key_type(&cifs_spnego_key_type); |
c4aca0c0 | 1320 | out_destroy_request_bufs: |
1fc7995d | 1321 | #endif |
45af7a0f | 1322 | cifs_destroy_request_bufs(); |
d3bf5221 | 1323 | out_destroy_mids: |
45af7a0f | 1324 | cifs_destroy_mids(); |
d3bf5221 | 1325 | out_destroy_inodecache: |
45af7a0f | 1326 | cifs_destroy_inodecache(); |
d3bf5221 | 1327 | out_unreg_fscache: |
f579cf3c | 1328 | cifs_fscache_unregister(); |
da472fc8 JL |
1329 | out_destroy_wq: |
1330 | destroy_workqueue(cifsiod_wq); | |
d3bf5221 SF |
1331 | out_clean_proc: |
1332 | cifs_proc_clean(); | |
1da177e4 LT |
1333 | return rc; |
1334 | } | |
1335 | ||
1336 | static void __exit | |
1337 | exit_cifs(void) | |
1338 | { | |
f96637be | 1339 | cifs_dbg(NOISY, "exit_cifs\n"); |
3dd93306 | 1340 | unregister_filesystem(&cifs_fs_type); |
78d31a3a | 1341 | cifs_dfs_release_automount_timer(); |
4d79dba0 | 1342 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1343 | exit_cifs_idmap(); |
1344 | #endif | |
84a15b93 JL |
1345 | #ifdef CONFIG_CIFS_UPCALL |
1346 | unregister_key_type(&cifs_spnego_key_type); | |
1da177e4 | 1347 | #endif |
1da177e4 | 1348 | cifs_destroy_request_bufs(); |
3dd93306 JL |
1349 | cifs_destroy_mids(); |
1350 | cifs_destroy_inodecache(); | |
1351 | cifs_fscache_unregister(); | |
da472fc8 | 1352 | destroy_workqueue(cifsiod_wq); |
3dd93306 | 1353 | cifs_proc_clean(); |
1da177e4 LT |
1354 | } |
1355 | ||
1356 | MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>"); | |
6dc0f87e | 1357 | MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */ |
1da177e4 | 1358 | MODULE_DESCRIPTION |
63135e08 SF |
1359 | ("VFS to access servers complying with the SNIA CIFS Specification " |
1360 | "e.g. Samba and Windows"); | |
1da177e4 LT |
1361 | MODULE_VERSION(CIFS_VERSION); |
1362 | module_init(init_cifs) | |
1363 | module_exit(exit_cifs) |