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> |
67e55205 | 38 | #include <linux/smp_lock.h> |
3eb9a889 | 39 | #include <net/ipv6.h> |
1da177e4 LT |
40 | #include "cifsfs.h" |
41 | #include "cifspdu.h" | |
42 | #define DECLARE_GLOBALS_HERE | |
43 | #include "cifsglob.h" | |
44 | #include "cifsproto.h" | |
45 | #include "cifs_debug.h" | |
46 | #include "cifs_fs_sb.h" | |
47 | #include <linux/mm.h> | |
84a15b93 | 48 | #include <linux/key-type.h> |
e545937a | 49 | #include "cifs_spnego.h" |
f579cf3c | 50 | #include "fscache.h" |
1da177e4 LT |
51 | #define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ |
52 | ||
1da177e4 LT |
53 | int cifsFYI = 0; |
54 | int cifsERROR = 1; | |
55 | int traceSMB = 0; | |
56 | unsigned int oplockEnabled = 1; | |
57 | unsigned int experimEnabled = 0; | |
58 | unsigned int linuxExtEnabled = 1; | |
59 | unsigned int lookupCacheEnabled = 1; | |
60 | unsigned int multiuser_mount = 0; | |
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 LT |
65 | unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE; |
66 | module_param(CIFSMaxBufSize, int, 0); | |
63135e08 SF |
67 | MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header). " |
68 | "Default: 16384 Range: 8192 to 130048"); | |
1da177e4 LT |
69 | unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL; |
70 | module_param(cifs_min_rcv, int, 0); | |
63135e08 SF |
71 | MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: " |
72 | "1 to 64"); | |
1da177e4 LT |
73 | unsigned int cifs_min_small = 30; |
74 | module_param(cifs_min_small, int, 0); | |
63135e08 SF |
75 | MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 " |
76 | "Range: 2 to 256"); | |
1da177e4 LT |
77 | unsigned int cifs_max_pending = CIFS_MAX_REQ; |
78 | module_param(cifs_max_pending, int, 0); | |
63135e08 SF |
79 | MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. " |
80 | "Default: 50 Range: 2 to 256"); | |
1da177e4 | 81 | |
1da177e4 LT |
82 | extern mempool_t *cifs_sm_req_poolp; |
83 | extern mempool_t *cifs_req_poolp; | |
84 | extern mempool_t *cifs_mid_poolp; | |
85 | ||
d7c86ff8 JL |
86 | void |
87 | cifs_sb_active(struct super_block *sb) | |
88 | { | |
89 | struct cifs_sb_info *server = CIFS_SB(sb); | |
90 | ||
91 | if (atomic_inc_return(&server->active) == 1) | |
92 | atomic_inc(&sb->s_active); | |
93 | } | |
94 | ||
95 | void | |
96 | cifs_sb_deactive(struct super_block *sb) | |
97 | { | |
98 | struct cifs_sb_info *server = CIFS_SB(sb); | |
99 | ||
100 | if (atomic_dec_and_test(&server->active)) | |
101 | deactivate_super(sb); | |
102 | } | |
103 | ||
1da177e4 LT |
104 | static int |
105 | cifs_read_super(struct super_block *sb, void *data, | |
106 | const char *devname, int silent) | |
107 | { | |
108 | struct inode *inode; | |
109 | struct cifs_sb_info *cifs_sb; | |
110 | int rc = 0; | |
50c2f753 | 111 | |
1b2b2126 SF |
112 | /* BB should we make this contingent on mount parm? */ |
113 | sb->s_flags |= MS_NODIRATIME | MS_NOATIME; | |
790fe579 | 114 | sb->s_fs_info = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL); |
1da177e4 | 115 | cifs_sb = CIFS_SB(sb); |
4523cc30 | 116 | if (cifs_sb == NULL) |
1da177e4 | 117 | return -ENOMEM; |
1da177e4 | 118 | |
0dd12c21 JL |
119 | spin_lock_init(&cifs_sb->tlink_tree_lock); |
120 | INIT_RADIX_TREE(&cifs_sb->tlink_tree, GFP_KERNEL); | |
121 | ||
8044f7f4 JA |
122 | rc = bdi_setup_and_register(&cifs_sb->bdi, "cifs", BDI_CAP_MAP_COPY); |
123 | if (rc) { | |
124 | kfree(cifs_sb); | |
125 | return rc; | |
126 | } | |
127 | ||
e6ab1582 IM |
128 | #ifdef CONFIG_CIFS_DFS_UPCALL |
129 | /* copy mount params to sb for use in submounts */ | |
130 | /* BB: should we move this after the mount so we | |
131 | * do not have to do the copy on failed mounts? | |
132 | * BB: May be it is better to do simple copy before | |
133 | * complex operation (mount), and in case of fail | |
134 | * just exit instead of doing mount and attempting | |
135 | * undo it if this copy fails?*/ | |
79ee9a8b SF |
136 | if (data) { |
137 | int len = strlen(data); | |
138 | cifs_sb->mountdata = kzalloc(len + 1, GFP_KERNEL); | |
139 | if (cifs_sb->mountdata == NULL) { | |
8044f7f4 | 140 | bdi_destroy(&cifs_sb->bdi); |
79ee9a8b SF |
141 | kfree(sb->s_fs_info); |
142 | sb->s_fs_info = NULL; | |
143 | return -ENOMEM; | |
144 | } | |
145 | strncpy(cifs_sb->mountdata, data, len + 1); | |
146 | cifs_sb->mountdata[len] = '\0'; | |
e6ab1582 | 147 | } |
e6ab1582 IM |
148 | #endif |
149 | ||
1da177e4 LT |
150 | rc = cifs_mount(sb, cifs_sb, data, devname); |
151 | ||
152 | if (rc) { | |
153 | if (!silent) | |
b6b38f70 | 154 | cERROR(1, "cifs_mount failed w/return code = %d", rc); |
1da177e4 LT |
155 | goto out_mount_failed; |
156 | } | |
157 | ||
158 | sb->s_magic = CIFS_MAGIC_NUMBER; | |
159 | sb->s_op = &cifs_super_ops; | |
8044f7f4 | 160 | sb->s_bdi = &cifs_sb->bdi; |
1da177e4 LT |
161 | sb->s_blocksize = CIFS_MAX_MSGSIZE; |
162 | sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */ | |
bd433d4c | 163 | inode = cifs_root_iget(sb, ROOT_I); |
1da177e4 | 164 | |
ce634ab2 DH |
165 | if (IS_ERR(inode)) { |
166 | rc = PTR_ERR(inode); | |
167 | inode = NULL; | |
1da177e4 LT |
168 | goto out_no_root; |
169 | } | |
170 | ||
171 | sb->s_root = d_alloc_root(inode); | |
172 | ||
173 | if (!sb->s_root) { | |
174 | rc = -ENOMEM; | |
175 | goto out_no_root; | |
176 | } | |
50c2f753 | 177 | |
7521a3c5 SF |
178 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
179 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { | |
b6b38f70 | 180 | cFYI(1, "export ops supported"); |
7521a3c5 SF |
181 | sb->s_export_op = &cifs_export_ops; |
182 | } | |
183 | #endif /* EXPERIMENTAL */ | |
1da177e4 LT |
184 | |
185 | return 0; | |
186 | ||
187 | out_no_root: | |
b6b38f70 | 188 | cERROR(1, "cifs_read_super: get root inode failed"); |
1da177e4 LT |
189 | if (inode) |
190 | iput(inode); | |
54b4602d | 191 | |
2c731afb | 192 | cifs_umount(sb, cifs_sb); |
1da177e4 LT |
193 | |
194 | out_mount_failed: | |
4523cc30 | 195 | if (cifs_sb) { |
e6ab1582 IM |
196 | #ifdef CONFIG_CIFS_DFS_UPCALL |
197 | if (cifs_sb->mountdata) { | |
198 | kfree(cifs_sb->mountdata); | |
199 | cifs_sb->mountdata = NULL; | |
200 | } | |
201 | #endif | |
6d729e44 | 202 | unload_nls(cifs_sb->local_nls); |
8044f7f4 | 203 | bdi_destroy(&cifs_sb->bdi); |
1da177e4 LT |
204 | kfree(cifs_sb); |
205 | } | |
206 | return rc; | |
207 | } | |
208 | ||
209 | static void | |
210 | cifs_put_super(struct super_block *sb) | |
211 | { | |
212 | int rc = 0; | |
213 | struct cifs_sb_info *cifs_sb; | |
214 | ||
b6b38f70 | 215 | cFYI(1, "In cifs_put_super"); |
1da177e4 | 216 | cifs_sb = CIFS_SB(sb); |
4523cc30 | 217 | if (cifs_sb == NULL) { |
b6b38f70 | 218 | cFYI(1, "Empty cifs superblock info passed to unmount"); |
1da177e4 LT |
219 | return; |
220 | } | |
6cfd0148 CH |
221 | |
222 | lock_kernel(); | |
223 | ||
790fe579 | 224 | rc = cifs_umount(sb, cifs_sb); |
ad7a2926 | 225 | if (rc) |
b6b38f70 | 226 | cERROR(1, "cifs_umount failed with return code %d", rc); |
e6ab1582 IM |
227 | #ifdef CONFIG_CIFS_DFS_UPCALL |
228 | if (cifs_sb->mountdata) { | |
229 | kfree(cifs_sb->mountdata); | |
230 | cifs_sb->mountdata = NULL; | |
231 | } | |
232 | #endif | |
233 | ||
1da177e4 | 234 | unload_nls(cifs_sb->local_nls); |
8044f7f4 | 235 | bdi_destroy(&cifs_sb->bdi); |
1da177e4 | 236 | kfree(cifs_sb); |
6cfd0148 CH |
237 | |
238 | unlock_kernel(); | |
1da177e4 LT |
239 | } |
240 | ||
241 | static int | |
726c3342 | 242 | cifs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 243 | { |
726c3342 | 244 | struct super_block *sb = dentry->d_sb; |
39da9847 | 245 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
0d424ad0 | 246 | struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb); |
c81156dd | 247 | int rc = -EOPNOTSUPP; |
39da9847 | 248 | int xid; |
1da177e4 LT |
249 | |
250 | xid = GetXid(); | |
251 | ||
1da177e4 LT |
252 | buf->f_type = CIFS_MAGIC_NUMBER; |
253 | ||
39da9847 SF |
254 | /* |
255 | * PATH_MAX may be too long - it would presumably be total path, | |
256 | * but note that some servers (includinng Samba 3) have a shorter | |
257 | * maximum path. | |
258 | * | |
259 | * Instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO. | |
260 | */ | |
261 | buf->f_namelen = PATH_MAX; | |
1da177e4 LT |
262 | buf->f_files = 0; /* undefined */ |
263 | buf->f_ffree = 0; /* unlimited */ | |
264 | ||
39da9847 SF |
265 | /* |
266 | * We could add a second check for a QFS Unix capability bit | |
267 | */ | |
268 | if ((tcon->ses->capabilities & CAP_UNIX) && | |
269 | (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability))) | |
270 | rc = CIFSSMBQFSPosixInfo(xid, tcon, buf); | |
271 | ||
272 | /* | |
273 | * Only need to call the old QFSInfo if failed on newer one, | |
274 | * e.g. by OS/2. | |
275 | **/ | |
276 | if (rc && (tcon->ses->capabilities & CAP_NT_SMBS)) | |
277 | rc = CIFSSMBQFSInfo(xid, tcon, buf); | |
278 | ||
279 | /* | |
280 | * Some old Windows servers also do not support level 103, retry with | |
281 | * older level one if old server failed the previous call or we | |
282 | * bypassed it because we detected that this was an older LANMAN sess | |
283 | */ | |
4523cc30 | 284 | if (rc) |
39da9847 SF |
285 | rc = SMBOldQFSInfo(xid, tcon, buf); |
286 | ||
1da177e4 | 287 | FreeXid(xid); |
39da9847 | 288 | return 0; |
1da177e4 LT |
289 | } |
290 | ||
e6305c43 | 291 | static int cifs_permission(struct inode *inode, int mask) |
1da177e4 LT |
292 | { |
293 | struct cifs_sb_info *cifs_sb; | |
294 | ||
295 | cifs_sb = CIFS_SB(inode->i_sb); | |
296 | ||
f696a365 MS |
297 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) { |
298 | if ((mask & MAY_EXEC) && !execute_ok(inode)) | |
299 | return -EACCES; | |
300 | else | |
301 | return 0; | |
302 | } else /* file mode might have been restricted at mount time | |
50c2f753 | 303 | on the client (above and beyond ACL on servers) for |
1da177e4 | 304 | servers which do not support setting and viewing mode bits, |
50c2f753 | 305 | so allowing client to check permissions is useful */ |
1da177e4 LT |
306 | return generic_permission(inode, mask, NULL); |
307 | } | |
308 | ||
e18b890b CL |
309 | static struct kmem_cache *cifs_inode_cachep; |
310 | static struct kmem_cache *cifs_req_cachep; | |
311 | static struct kmem_cache *cifs_mid_cachep; | |
e18b890b | 312 | static struct kmem_cache *cifs_sm_req_cachep; |
1da177e4 LT |
313 | mempool_t *cifs_sm_req_poolp; |
314 | mempool_t *cifs_req_poolp; | |
315 | mempool_t *cifs_mid_poolp; | |
316 | ||
317 | static struct inode * | |
318 | cifs_alloc_inode(struct super_block *sb) | |
319 | { | |
320 | struct cifsInodeInfo *cifs_inode; | |
e94b1766 | 321 | cifs_inode = kmem_cache_alloc(cifs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
322 | if (!cifs_inode) |
323 | return NULL; | |
324 | cifs_inode->cifsAttrs = 0x20; /* default */ | |
1da177e4 | 325 | cifs_inode->time = 0; |
cea21805 | 326 | cifs_inode->write_behind_rc = 0; |
1da177e4 LT |
327 | /* Until the file is open and we have gotten oplock |
328 | info back from the server, can not assume caching of | |
329 | file data or metadata */ | |
4b18f2a9 SF |
330 | cifs_inode->clientCanCacheRead = false; |
331 | cifs_inode->clientCanCacheAll = false; | |
9a8165fc | 332 | cifs_inode->delete_pending = false; |
df2cf170 | 333 | cifs_inode->invalid_mapping = false; |
1da177e4 | 334 | cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ |
fbec9ab9 | 335 | cifs_inode->server_eof = 0; |
50c2f753 | 336 | |
1b2b2126 SF |
337 | /* Can not set i_flags here - they get immediately overwritten |
338 | to zero by the VFS */ | |
339 | /* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME;*/ | |
1da177e4 LT |
340 | INIT_LIST_HEAD(&cifs_inode->openFileList); |
341 | return &cifs_inode->vfs_inode; | |
342 | } | |
343 | ||
344 | static void | |
345 | cifs_destroy_inode(struct inode *inode) | |
346 | { | |
347 | kmem_cache_free(cifs_inode_cachep, CIFS_I(inode)); | |
348 | } | |
349 | ||
9451a9a5 | 350 | static void |
b57922d9 | 351 | cifs_evict_inode(struct inode *inode) |
9451a9a5 | 352 | { |
b57922d9 AV |
353 | truncate_inode_pages(&inode->i_data, 0); |
354 | end_writeback(inode); | |
9451a9a5 SJ |
355 | cifs_fscache_release_inode_cookie(inode); |
356 | } | |
357 | ||
61f98ffd JL |
358 | static void |
359 | cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server) | |
360 | { | |
361 | seq_printf(s, ",addr="); | |
362 | ||
363 | switch (server->addr.sockAddr.sin_family) { | |
364 | case AF_INET: | |
365 | seq_printf(s, "%pI4", &server->addr.sockAddr.sin_addr.s_addr); | |
366 | break; | |
367 | case AF_INET6: | |
368 | seq_printf(s, "%pI6", | |
369 | &server->addr.sockAddr6.sin6_addr.s6_addr); | |
370 | if (server->addr.sockAddr6.sin6_scope_id) | |
371 | seq_printf(s, "%%%u", | |
372 | server->addr.sockAddr6.sin6_scope_id); | |
373 | break; | |
374 | default: | |
375 | seq_printf(s, "(unknown)"); | |
376 | } | |
377 | } | |
378 | ||
1da177e4 LT |
379 | /* |
380 | * cifs_show_options() is for displaying mount options in /proc/mounts. | |
381 | * Not all settable options are displayed but most of the important | |
382 | * ones are. | |
383 | */ | |
384 | static int | |
385 | cifs_show_options(struct seq_file *s, struct vfsmount *m) | |
386 | { | |
8e047d09 | 387 | struct cifs_sb_info *cifs_sb = CIFS_SB(m->mnt_sb); |
0d424ad0 | 388 | struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb); |
3eb9a889 BG |
389 | struct sockaddr *srcaddr; |
390 | srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr; | |
8616e0fc | 391 | |
8e047d09 | 392 | seq_printf(s, ",unc=%s", tcon->treeName); |
29e07c82 JL |
393 | |
394 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) | |
395 | seq_printf(s, ",multiuser"); | |
396 | else if (tcon->ses->userName) | |
8616e0fc | 397 | seq_printf(s, ",username=%s", tcon->ses->userName); |
29e07c82 | 398 | |
8616e0fc JL |
399 | if (tcon->ses->domainName) |
400 | seq_printf(s, ",domain=%s", tcon->ses->domainName); | |
401 | ||
3eb9a889 BG |
402 | if (srcaddr->sa_family != AF_UNSPEC) { |
403 | struct sockaddr_in *saddr4; | |
404 | struct sockaddr_in6 *saddr6; | |
405 | saddr4 = (struct sockaddr_in *)srcaddr; | |
406 | saddr6 = (struct sockaddr_in6 *)srcaddr; | |
407 | if (srcaddr->sa_family == AF_INET6) | |
408 | seq_printf(s, ",srcaddr=%pI6c", | |
409 | &saddr6->sin6_addr); | |
410 | else if (srcaddr->sa_family == AF_INET) | |
411 | seq_printf(s, ",srcaddr=%pI4", | |
412 | &saddr4->sin_addr.s_addr); | |
413 | else | |
414 | seq_printf(s, ",srcaddr=BAD-AF:%i", | |
415 | (int)(srcaddr->sa_family)); | |
416 | } | |
417 | ||
8616e0fc | 418 | seq_printf(s, ",uid=%d", cifs_sb->mnt_uid); |
340481a3 JL |
419 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
420 | seq_printf(s, ",forceuid"); | |
4486d6ed JL |
421 | else |
422 | seq_printf(s, ",noforceuid"); | |
340481a3 | 423 | |
8616e0fc | 424 | seq_printf(s, ",gid=%d", cifs_sb->mnt_gid); |
340481a3 JL |
425 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
426 | seq_printf(s, ",forcegid"); | |
4486d6ed JL |
427 | else |
428 | seq_printf(s, ",noforcegid"); | |
8616e0fc | 429 | |
61f98ffd | 430 | cifs_show_address(s, tcon->ses->server); |
1da177e4 | 431 | |
8616e0fc JL |
432 | if (!tcon->unix_ext) |
433 | seq_printf(s, ",file_mode=0%o,dir_mode=0%o", | |
2b280fab SF |
434 | cifs_sb->mnt_file_mode, |
435 | cifs_sb->mnt_dir_mode); | |
8616e0fc JL |
436 | if (tcon->seal) |
437 | seq_printf(s, ",seal"); | |
438 | if (tcon->nocase) | |
439 | seq_printf(s, ",nocase"); | |
440 | if (tcon->retry) | |
441 | seq_printf(s, ",hard"); | |
442 | if (cifs_sb->prepath) | |
443 | seq_printf(s, ",prepath=%s", cifs_sb->prepath); | |
444 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
445 | seq_printf(s, ",posixpaths"); | |
446 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) | |
447 | seq_printf(s, ",setuids"); | |
448 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) | |
449 | seq_printf(s, ",serverino"); | |
450 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) | |
451 | seq_printf(s, ",directio"); | |
452 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) | |
453 | seq_printf(s, ",nouser_xattr"); | |
454 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR) | |
455 | seq_printf(s, ",mapchars"); | |
456 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) | |
457 | seq_printf(s, ",sfu"); | |
458 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) | |
459 | seq_printf(s, ",nobrl"); | |
460 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) | |
461 | seq_printf(s, ",cifsacl"); | |
462 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) | |
463 | seq_printf(s, ",dynperm"); | |
464 | if (m->mnt_sb->s_flags & MS_POSIXACL) | |
465 | seq_printf(s, ",acl"); | |
736a3320 SM |
466 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) |
467 | seq_printf(s, ",mfsymlinks"); | |
8616e0fc JL |
468 | |
469 | seq_printf(s, ",rsize=%d", cifs_sb->rsize); | |
470 | seq_printf(s, ",wsize=%d", cifs_sb->wsize); | |
471 | ||
1da177e4 LT |
472 | return 0; |
473 | } | |
474 | ||
42faad99 | 475 | static void cifs_umount_begin(struct super_block *sb) |
68058e75 | 476 | { |
42faad99 | 477 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
50c2f753 | 478 | struct cifsTconInfo *tcon; |
68058e75 | 479 | |
4523cc30 | 480 | if (cifs_sb == NULL) |
9e2e85f8 SF |
481 | return; |
482 | ||
0d424ad0 | 483 | tcon = cifs_sb_master_tcon(cifs_sb); |
f1987b44 JL |
484 | |
485 | read_lock(&cifs_tcp_ses_lock); | |
ad8034f1 SF |
486 | if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) { |
487 | /* we have other mounts to same share or we have | |
488 | already tried to force umount this and woken up | |
489 | all waiting network requests, nothing to do */ | |
490 | read_unlock(&cifs_tcp_ses_lock); | |
491 | return; | |
492 | } else if (tcon->tc_count == 1) | |
5e1253b5 | 493 | tcon->tidStatus = CifsExiting; |
f1987b44 | 494 | read_unlock(&cifs_tcp_ses_lock); |
5e1253b5 | 495 | |
3a5ff61c | 496 | /* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */ |
7b7abfe3 | 497 | /* cancel_notify_requests(tcon); */ |
50c2f753 | 498 | if (tcon->ses && tcon->ses->server) { |
b6b38f70 | 499 | cFYI(1, "wake up tasks now - umount begin not complete"); |
9e2e85f8 | 500 | wake_up_all(&tcon->ses->server->request_q); |
6ab16d24 SF |
501 | wake_up_all(&tcon->ses->server->response_q); |
502 | msleep(1); /* yield */ | |
503 | /* we have to kick the requests once more */ | |
504 | wake_up_all(&tcon->ses->server->response_q); | |
505 | msleep(1); | |
5e1253b5 | 506 | } |
68058e75 SF |
507 | |
508 | return; | |
509 | } | |
68058e75 | 510 | |
bf97d287 SF |
511 | #ifdef CONFIG_CIFS_STATS2 |
512 | static int cifs_show_stats(struct seq_file *s, struct vfsmount *mnt) | |
513 | { | |
514 | /* BB FIXME */ | |
515 | return 0; | |
516 | } | |
517 | #endif | |
518 | ||
1da177e4 LT |
519 | static int cifs_remount(struct super_block *sb, int *flags, char *data) |
520 | { | |
521 | *flags |= MS_NODIRATIME; | |
522 | return 0; | |
523 | } | |
524 | ||
45321ac5 | 525 | static int cifs_drop_inode(struct inode *inode) |
12420ac3 JL |
526 | { |
527 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
528 | ||
45321ac5 AV |
529 | /* no serverino => unconditional eviction */ |
530 | return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) || | |
531 | generic_drop_inode(inode); | |
12420ac3 JL |
532 | } |
533 | ||
ee9b6d61 | 534 | static const struct super_operations cifs_super_ops = { |
1da177e4 LT |
535 | .put_super = cifs_put_super, |
536 | .statfs = cifs_statfs, | |
537 | .alloc_inode = cifs_alloc_inode, | |
538 | .destroy_inode = cifs_destroy_inode, | |
12420ac3 | 539 | .drop_inode = cifs_drop_inode, |
b57922d9 | 540 | .evict_inode = cifs_evict_inode, |
12420ac3 JL |
541 | /* .delete_inode = cifs_delete_inode, */ /* Do not need above |
542 | function unless later we add lazy close of inodes or unless the | |
50c2f753 SF |
543 | kernel forgets to call us with the same number of releases (closes) |
544 | as opens */ | |
1da177e4 | 545 | .show_options = cifs_show_options, |
7b7abfe3 | 546 | .umount_begin = cifs_umount_begin, |
1da177e4 | 547 | .remount_fs = cifs_remount, |
bf97d287 | 548 | #ifdef CONFIG_CIFS_STATS2 |
f46d3e11 | 549 | .show_stats = cifs_show_stats, |
bf97d287 | 550 | #endif |
1da177e4 LT |
551 | }; |
552 | ||
454e2398 | 553 | static int |
1da177e4 | 554 | cifs_get_sb(struct file_system_type *fs_type, |
454e2398 | 555 | int flags, const char *dev_name, void *data, struct vfsmount *mnt) |
1da177e4 LT |
556 | { |
557 | int rc; | |
558 | struct super_block *sb = sget(fs_type, NULL, set_anon_super, NULL); | |
559 | ||
b6b38f70 | 560 | cFYI(1, "Devname: %s flags: %d ", dev_name, flags); |
1da177e4 LT |
561 | |
562 | if (IS_ERR(sb)) | |
454e2398 | 563 | return PTR_ERR(sb); |
1da177e4 LT |
564 | |
565 | sb->s_flags = flags; | |
566 | ||
9b04c997 | 567 | rc = cifs_read_super(sb, data, dev_name, flags & MS_SILENT ? 1 : 0); |
1da177e4 | 568 | if (rc) { |
6f5bbff9 | 569 | deactivate_locked_super(sb); |
454e2398 | 570 | return rc; |
1da177e4 LT |
571 | } |
572 | sb->s_flags |= MS_ACTIVE; | |
a3ec947c SB |
573 | simple_set_mnt(mnt, sb); |
574 | return 0; | |
1da177e4 LT |
575 | } |
576 | ||
027445c3 BP |
577 | static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov, |
578 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 579 | { |
e6a00296 | 580 | struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode; |
1da177e4 LT |
581 | ssize_t written; |
582 | ||
027445c3 | 583 | written = generic_file_aio_write(iocb, iov, nr_segs, pos); |
87c89dd7 SF |
584 | if (!CIFS_I(inode)->clientCanCacheAll) |
585 | filemap_fdatawrite(inode->i_mapping); | |
1da177e4 LT |
586 | return written; |
587 | } | |
588 | ||
c32a0b68 SF |
589 | static loff_t cifs_llseek(struct file *file, loff_t offset, int origin) |
590 | { | |
591 | /* origin == SEEK_END => we must revalidate the cached file length */ | |
0889a944 | 592 | if (origin == SEEK_END) { |
030e9d81 SF |
593 | int retval; |
594 | ||
595 | /* some applications poll for the file length in this strange | |
596 | way so we must seek to end on non-oplocked files by | |
597 | setting the revalidate time to zero */ | |
c33f8d32 | 598 | CIFS_I(file->f_path.dentry->d_inode)->time = 0; |
030e9d81 | 599 | |
abab095d | 600 | retval = cifs_revalidate_file(file); |
c32a0b68 SF |
601 | if (retval < 0) |
602 | return (loff_t)retval; | |
603 | } | |
9465efc9 | 604 | return generic_file_llseek_unlocked(file, offset, origin); |
c32a0b68 SF |
605 | } |
606 | ||
84210e91 SF |
607 | static int cifs_setlease(struct file *file, long arg, struct file_lock **lease) |
608 | { | |
609 | /* note that this is called by vfs setlease with the BKL held | |
610 | although I doubt that BKL is needed here in cifs */ | |
611 | struct inode *inode = file->f_path.dentry->d_inode; | |
ba00ba64 | 612 | struct cifsFileInfo *cfile = file->private_data; |
84210e91 SF |
613 | |
614 | if (!(S_ISREG(inode->i_mode))) | |
615 | return -EINVAL; | |
616 | ||
617 | /* check if file is oplocked */ | |
618 | if (((arg == F_RDLCK) && | |
619 | (CIFS_I(inode)->clientCanCacheRead)) || | |
620 | ((arg == F_WRLCK) && | |
621 | (CIFS_I(inode)->clientCanCacheAll))) | |
622 | return generic_setlease(file, arg, lease); | |
13cfb733 JL |
623 | else if (tlink_tcon(cfile->tlink)->local_lease && |
624 | !CIFS_I(inode)->clientCanCacheRead) | |
84210e91 SF |
625 | /* If the server claims to support oplock on this |
626 | file, then we still need to check oplock even | |
627 | if the local_lease mount option is set, but there | |
628 | are servers which do not support oplock for which | |
629 | this mount option may be useful if the user | |
630 | knows that the file won't be changed on the server | |
631 | by anyone else */ | |
632 | return generic_setlease(file, arg, lease); | |
633 | else | |
634 | return -EAGAIN; | |
635 | } | |
84210e91 | 636 | |
e6ab1582 | 637 | struct file_system_type cifs_fs_type = { |
1da177e4 LT |
638 | .owner = THIS_MODULE, |
639 | .name = "cifs", | |
640 | .get_sb = cifs_get_sb, | |
641 | .kill_sb = kill_anon_super, | |
642 | /* .fs_flags */ | |
643 | }; | |
754661f1 | 644 | const struct inode_operations cifs_dir_inode_ops = { |
1da177e4 LT |
645 | .create = cifs_create, |
646 | .lookup = cifs_lookup, | |
647 | .getattr = cifs_getattr, | |
648 | .unlink = cifs_unlink, | |
649 | .link = cifs_hardlink, | |
650 | .mkdir = cifs_mkdir, | |
651 | .rmdir = cifs_rmdir, | |
652 | .rename = cifs_rename, | |
653 | .permission = cifs_permission, | |
654 | /* revalidate:cifs_revalidate, */ | |
655 | .setattr = cifs_setattr, | |
656 | .symlink = cifs_symlink, | |
657 | .mknod = cifs_mknod, | |
658 | #ifdef CONFIG_CIFS_XATTR | |
659 | .setxattr = cifs_setxattr, | |
660 | .getxattr = cifs_getxattr, | |
661 | .listxattr = cifs_listxattr, | |
662 | .removexattr = cifs_removexattr, | |
663 | #endif | |
664 | }; | |
665 | ||
754661f1 | 666 | const struct inode_operations cifs_file_inode_ops = { |
1da177e4 LT |
667 | /* revalidate:cifs_revalidate, */ |
668 | .setattr = cifs_setattr, | |
669 | .getattr = cifs_getattr, /* do we need this anymore? */ | |
670 | .rename = cifs_rename, | |
671 | .permission = cifs_permission, | |
672 | #ifdef CONFIG_CIFS_XATTR | |
673 | .setxattr = cifs_setxattr, | |
674 | .getxattr = cifs_getxattr, | |
675 | .listxattr = cifs_listxattr, | |
676 | .removexattr = cifs_removexattr, | |
50c2f753 | 677 | #endif |
1da177e4 LT |
678 | }; |
679 | ||
754661f1 | 680 | const struct inode_operations cifs_symlink_inode_ops = { |
50c2f753 | 681 | .readlink = generic_readlink, |
1da177e4 LT |
682 | .follow_link = cifs_follow_link, |
683 | .put_link = cifs_put_link, | |
684 | .permission = cifs_permission, | |
685 | /* BB add the following two eventually */ | |
686 | /* revalidate: cifs_revalidate, | |
687 | setattr: cifs_notify_change, *//* BB do we need notify change */ | |
688 | #ifdef CONFIG_CIFS_XATTR | |
689 | .setxattr = cifs_setxattr, | |
690 | .getxattr = cifs_getxattr, | |
691 | .listxattr = cifs_listxattr, | |
692 | .removexattr = cifs_removexattr, | |
50c2f753 | 693 | #endif |
1da177e4 LT |
694 | }; |
695 | ||
4b6f5d20 | 696 | const struct file_operations cifs_file_ops = { |
87c89dd7 SF |
697 | .read = do_sync_read, |
698 | .write = do_sync_write, | |
87c89dd7 SF |
699 | .aio_read = generic_file_aio_read, |
700 | .aio_write = cifs_file_aio_write, | |
1da177e4 LT |
701 | .open = cifs_open, |
702 | .release = cifs_close, | |
703 | .lock = cifs_lock, | |
704 | .fsync = cifs_fsync, | |
705 | .flush = cifs_flush, | |
706 | .mmap = cifs_file_mmap, | |
5ffc4ef4 | 707 | .splice_read = generic_file_splice_read, |
c32a0b68 | 708 | .llseek = cifs_llseek, |
c67593a0 | 709 | #ifdef CONFIG_CIFS_POSIX |
f9ddcca4 | 710 | .unlocked_ioctl = cifs_ioctl, |
c67593a0 | 711 | #endif /* CONFIG_CIFS_POSIX */ |
84210e91 | 712 | .setlease = cifs_setlease, |
1da177e4 LT |
713 | }; |
714 | ||
4b6f5d20 | 715 | const struct file_operations cifs_file_direct_ops = { |
a994b8fa | 716 | /* no aio, no readv - |
1da177e4 LT |
717 | BB reevaluate whether they can be done with directio, no cache */ |
718 | .read = cifs_user_read, | |
719 | .write = cifs_user_write, | |
720 | .open = cifs_open, | |
721 | .release = cifs_close, | |
722 | .lock = cifs_lock, | |
723 | .fsync = cifs_fsync, | |
724 | .flush = cifs_flush, | |
a994b8fa | 725 | .mmap = cifs_file_mmap, |
5ffc4ef4 | 726 | .splice_read = generic_file_splice_read, |
c67593a0 | 727 | #ifdef CONFIG_CIFS_POSIX |
f9ddcca4 | 728 | .unlocked_ioctl = cifs_ioctl, |
c67593a0 | 729 | #endif /* CONFIG_CIFS_POSIX */ |
c32a0b68 | 730 | .llseek = cifs_llseek, |
84210e91 | 731 | .setlease = cifs_setlease, |
1da177e4 | 732 | }; |
4b6f5d20 | 733 | const struct file_operations cifs_file_nobrl_ops = { |
87c89dd7 SF |
734 | .read = do_sync_read, |
735 | .write = do_sync_write, | |
87c89dd7 SF |
736 | .aio_read = generic_file_aio_read, |
737 | .aio_write = cifs_file_aio_write, | |
738 | .open = cifs_open, | |
739 | .release = cifs_close, | |
740 | .fsync = cifs_fsync, | |
741 | .flush = cifs_flush, | |
742 | .mmap = cifs_file_mmap, | |
5ffc4ef4 | 743 | .splice_read = generic_file_splice_read, |
c32a0b68 | 744 | .llseek = cifs_llseek, |
8b94bcb9 | 745 | #ifdef CONFIG_CIFS_POSIX |
f9ddcca4 | 746 | .unlocked_ioctl = cifs_ioctl, |
8b94bcb9 | 747 | #endif /* CONFIG_CIFS_POSIX */ |
84210e91 | 748 | .setlease = cifs_setlease, |
8b94bcb9 SF |
749 | }; |
750 | ||
4b6f5d20 | 751 | const struct file_operations cifs_file_direct_nobrl_ops = { |
50c2f753 | 752 | /* no mmap, no aio, no readv - |
87c89dd7 SF |
753 | BB reevaluate whether they can be done with directio, no cache */ |
754 | .read = cifs_user_read, | |
755 | .write = cifs_user_write, | |
756 | .open = cifs_open, | |
757 | .release = cifs_close, | |
758 | .fsync = cifs_fsync, | |
759 | .flush = cifs_flush, | |
810627a0 | 760 | .mmap = cifs_file_mmap, |
5ffc4ef4 | 761 | .splice_read = generic_file_splice_read, |
8b94bcb9 | 762 | #ifdef CONFIG_CIFS_POSIX |
f9ddcca4 | 763 | .unlocked_ioctl = cifs_ioctl, |
8b94bcb9 | 764 | #endif /* CONFIG_CIFS_POSIX */ |
c32a0b68 | 765 | .llseek = cifs_llseek, |
84210e91 | 766 | .setlease = cifs_setlease, |
8b94bcb9 | 767 | }; |
1da177e4 | 768 | |
4b6f5d20 | 769 | const struct file_operations cifs_dir_ops = { |
1da177e4 LT |
770 | .readdir = cifs_readdir, |
771 | .release = cifs_closedir, | |
772 | .read = generic_read_dir, | |
f9ddcca4 | 773 | .unlocked_ioctl = cifs_ioctl, |
3222a3e5 | 774 | .llseek = generic_file_llseek, |
1da177e4 LT |
775 | }; |
776 | ||
777 | static void | |
51cc5068 | 778 | cifs_init_once(void *inode) |
1da177e4 LT |
779 | { |
780 | struct cifsInodeInfo *cifsi = inode; | |
781 | ||
a35afb83 CL |
782 | inode_init_once(&cifsi->vfs_inode); |
783 | INIT_LIST_HEAD(&cifsi->lockList); | |
1da177e4 LT |
784 | } |
785 | ||
786 | static int | |
787 | cifs_init_inodecache(void) | |
788 | { | |
789 | cifs_inode_cachep = kmem_cache_create("cifs_inode_cache", | |
26f57364 | 790 | sizeof(struct cifsInodeInfo), |
fffb60f9 PJ |
791 | 0, (SLAB_RECLAIM_ACCOUNT| |
792 | SLAB_MEM_SPREAD), | |
20c2df83 | 793 | cifs_init_once); |
1da177e4 LT |
794 | if (cifs_inode_cachep == NULL) |
795 | return -ENOMEM; | |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | static void | |
801 | cifs_destroy_inodecache(void) | |
802 | { | |
1a1d92c1 | 803 | kmem_cache_destroy(cifs_inode_cachep); |
1da177e4 LT |
804 | } |
805 | ||
806 | static int | |
807 | cifs_init_request_bufs(void) | |
808 | { | |
4523cc30 | 809 | if (CIFSMaxBufSize < 8192) { |
1da177e4 LT |
810 | /* Buffer size can not be smaller than 2 * PATH_MAX since maximum |
811 | Unicode path name has to fit in any SMB/CIFS path based frames */ | |
812 | CIFSMaxBufSize = 8192; | |
813 | } else if (CIFSMaxBufSize > 1024*127) { | |
814 | CIFSMaxBufSize = 1024 * 127; | |
815 | } else { | |
816 | CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/ | |
817 | } | |
b6b38f70 | 818 | /* cERROR(1, "CIFSMaxBufSize %d 0x%x",CIFSMaxBufSize,CIFSMaxBufSize); */ |
1da177e4 LT |
819 | cifs_req_cachep = kmem_cache_create("cifs_request", |
820 | CIFSMaxBufSize + | |
821 | MAX_CIFS_HDR_SIZE, 0, | |
20c2df83 | 822 | SLAB_HWCACHE_ALIGN, NULL); |
1da177e4 LT |
823 | if (cifs_req_cachep == NULL) |
824 | return -ENOMEM; | |
825 | ||
4523cc30 | 826 | if (cifs_min_rcv < 1) |
1da177e4 LT |
827 | cifs_min_rcv = 1; |
828 | else if (cifs_min_rcv > 64) { | |
829 | cifs_min_rcv = 64; | |
b6b38f70 | 830 | cERROR(1, "cifs_min_rcv set to maximum (64)"); |
1da177e4 LT |
831 | } |
832 | ||
93d2341c MD |
833 | cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv, |
834 | cifs_req_cachep); | |
1da177e4 | 835 | |
4523cc30 | 836 | if (cifs_req_poolp == NULL) { |
1da177e4 LT |
837 | kmem_cache_destroy(cifs_req_cachep); |
838 | return -ENOMEM; | |
839 | } | |
ec637e3f | 840 | /* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and |
1da177e4 LT |
841 | almost all handle based requests (but not write response, nor is it |
842 | sufficient for path based requests). A smaller size would have | |
50c2f753 | 843 | been more efficient (compacting multiple slab items on one 4k page) |
1da177e4 LT |
844 | for the case in which debug was on, but this larger size allows |
845 | more SMBs to use small buffer alloc and is still much more | |
6dc0f87e | 846 | efficient to alloc 1 per page off the slab compared to 17K (5page) |
1da177e4 LT |
847 | alloc of large cifs buffers even when page debugging is on */ |
848 | cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq", | |
6dc0f87e | 849 | MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN, |
20c2df83 | 850 | NULL); |
1da177e4 LT |
851 | if (cifs_sm_req_cachep == NULL) { |
852 | mempool_destroy(cifs_req_poolp); | |
853 | kmem_cache_destroy(cifs_req_cachep); | |
6dc0f87e | 854 | return -ENOMEM; |
1da177e4 LT |
855 | } |
856 | ||
4523cc30 | 857 | if (cifs_min_small < 2) |
1da177e4 LT |
858 | cifs_min_small = 2; |
859 | else if (cifs_min_small > 256) { | |
860 | cifs_min_small = 256; | |
b6b38f70 | 861 | cFYI(1, "cifs_min_small set to maximum (256)"); |
1da177e4 LT |
862 | } |
863 | ||
93d2341c MD |
864 | cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small, |
865 | cifs_sm_req_cachep); | |
1da177e4 | 866 | |
4523cc30 | 867 | if (cifs_sm_req_poolp == NULL) { |
1da177e4 LT |
868 | mempool_destroy(cifs_req_poolp); |
869 | kmem_cache_destroy(cifs_req_cachep); | |
870 | kmem_cache_destroy(cifs_sm_req_cachep); | |
871 | return -ENOMEM; | |
872 | } | |
873 | ||
874 | return 0; | |
875 | } | |
876 | ||
877 | static void | |
878 | cifs_destroy_request_bufs(void) | |
879 | { | |
880 | mempool_destroy(cifs_req_poolp); | |
1a1d92c1 | 881 | kmem_cache_destroy(cifs_req_cachep); |
1da177e4 | 882 | mempool_destroy(cifs_sm_req_poolp); |
1a1d92c1 | 883 | kmem_cache_destroy(cifs_sm_req_cachep); |
1da177e4 LT |
884 | } |
885 | ||
886 | static int | |
887 | cifs_init_mids(void) | |
888 | { | |
889 | cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids", | |
26f57364 SF |
890 | sizeof(struct mid_q_entry), 0, |
891 | SLAB_HWCACHE_ALIGN, NULL); | |
1da177e4 LT |
892 | if (cifs_mid_cachep == NULL) |
893 | return -ENOMEM; | |
894 | ||
93d2341c MD |
895 | /* 3 is a reasonable minimum number of simultaneous operations */ |
896 | cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep); | |
4523cc30 | 897 | if (cifs_mid_poolp == NULL) { |
1da177e4 LT |
898 | kmem_cache_destroy(cifs_mid_cachep); |
899 | return -ENOMEM; | |
900 | } | |
901 | ||
1da177e4 LT |
902 | return 0; |
903 | } | |
904 | ||
905 | static void | |
906 | cifs_destroy_mids(void) | |
907 | { | |
908 | mempool_destroy(cifs_mid_poolp); | |
1a1d92c1 | 909 | kmem_cache_destroy(cifs_mid_cachep); |
1da177e4 LT |
910 | } |
911 | ||
1da177e4 LT |
912 | static int __init |
913 | init_cifs(void) | |
914 | { | |
915 | int rc = 0; | |
1da177e4 | 916 | cifs_proc_init(); |
e7ddee90 | 917 | INIT_LIST_HEAD(&cifs_tcp_ses_list); |
4ca9c190 SF |
918 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
919 | INIT_LIST_HEAD(&GlobalDnotifyReqList); | |
920 | INIT_LIST_HEAD(&GlobalDnotifyRsp_Q); | |
6dc0f87e | 921 | #endif |
1da177e4 LT |
922 | /* |
923 | * Initialize Global counters | |
924 | */ | |
925 | atomic_set(&sesInfoAllocCount, 0); | |
926 | atomic_set(&tconInfoAllocCount, 0); | |
6dc0f87e | 927 | atomic_set(&tcpSesAllocCount, 0); |
1da177e4 LT |
928 | atomic_set(&tcpSesReconnectCount, 0); |
929 | atomic_set(&tconInfoReconnectCount, 0); | |
930 | ||
931 | atomic_set(&bufAllocCount, 0); | |
4498eed5 SF |
932 | atomic_set(&smBufAllocCount, 0); |
933 | #ifdef CONFIG_CIFS_STATS2 | |
934 | atomic_set(&totBufAllocCount, 0); | |
935 | atomic_set(&totSmBufAllocCount, 0); | |
936 | #endif /* CONFIG_CIFS_STATS2 */ | |
937 | ||
1da177e4 LT |
938 | atomic_set(&midCount, 0); |
939 | GlobalCurrentXid = 0; | |
940 | GlobalTotalActiveXid = 0; | |
941 | GlobalMaxActiveXid = 0; | |
2cd646a2 | 942 | memset(Local_System_Name, 0, 15); |
1da177e4 | 943 | rwlock_init(&GlobalSMBSeslock); |
e7ddee90 | 944 | rwlock_init(&cifs_tcp_ses_lock); |
1da177e4 LT |
945 | spin_lock_init(&GlobalMid_Lock); |
946 | ||
4523cc30 | 947 | if (cifs_max_pending < 2) { |
1da177e4 | 948 | cifs_max_pending = 2; |
b6b38f70 | 949 | cFYI(1, "cifs_max_pending set to min of 2"); |
4523cc30 | 950 | } else if (cifs_max_pending > 256) { |
1da177e4 | 951 | cifs_max_pending = 256; |
b6b38f70 | 952 | cFYI(1, "cifs_max_pending set to max of 256"); |
1da177e4 LT |
953 | } |
954 | ||
f579cf3c SJ |
955 | rc = cifs_fscache_register(); |
956 | if (rc) | |
d3bf5221 | 957 | goto out_clean_proc; |
f579cf3c | 958 | |
1da177e4 | 959 | rc = cifs_init_inodecache(); |
45af7a0f | 960 | if (rc) |
d3bf5221 | 961 | goto out_unreg_fscache; |
45af7a0f SF |
962 | |
963 | rc = cifs_init_mids(); | |
964 | if (rc) | |
965 | goto out_destroy_inodecache; | |
966 | ||
967 | rc = cifs_init_request_bufs(); | |
968 | if (rc) | |
969 | goto out_destroy_mids; | |
970 | ||
971 | rc = register_filesystem(&cifs_fs_type); | |
972 | if (rc) | |
973 | goto out_destroy_request_bufs; | |
84a15b93 JL |
974 | #ifdef CONFIG_CIFS_UPCALL |
975 | rc = register_key_type(&cifs_spnego_key_type); | |
976 | if (rc) | |
977 | goto out_unregister_filesystem; | |
6103335d | 978 | #endif |
45af7a0f | 979 | |
45af7a0f SF |
980 | return 0; |
981 | ||
84a15b93 | 982 | #ifdef CONFIG_CIFS_UPCALL |
d3bf5221 | 983 | out_unregister_filesystem: |
45af7a0f | 984 | unregister_filesystem(&cifs_fs_type); |
1fc7995d | 985 | #endif |
d3bf5221 | 986 | out_destroy_request_bufs: |
45af7a0f | 987 | cifs_destroy_request_bufs(); |
d3bf5221 | 988 | out_destroy_mids: |
45af7a0f | 989 | cifs_destroy_mids(); |
d3bf5221 | 990 | out_destroy_inodecache: |
45af7a0f | 991 | cifs_destroy_inodecache(); |
d3bf5221 | 992 | out_unreg_fscache: |
f579cf3c | 993 | cifs_fscache_unregister(); |
d3bf5221 SF |
994 | out_clean_proc: |
995 | cifs_proc_clean(); | |
1da177e4 LT |
996 | return rc; |
997 | } | |
998 | ||
999 | static void __exit | |
1000 | exit_cifs(void) | |
1001 | { | |
b6b38f70 | 1002 | cFYI(DBG2, "exit_cifs"); |
1da177e4 | 1003 | cifs_proc_clean(); |
f579cf3c | 1004 | cifs_fscache_unregister(); |
6103335d | 1005 | #ifdef CONFIG_CIFS_DFS_UPCALL |
78d31a3a | 1006 | cifs_dfs_release_automount_timer(); |
6103335d | 1007 | #endif |
84a15b93 JL |
1008 | #ifdef CONFIG_CIFS_UPCALL |
1009 | unregister_key_type(&cifs_spnego_key_type); | |
1da177e4 LT |
1010 | #endif |
1011 | unregister_filesystem(&cifs_fs_type); | |
1012 | cifs_destroy_inodecache(); | |
1013 | cifs_destroy_mids(); | |
1014 | cifs_destroy_request_bufs(); | |
1da177e4 LT |
1015 | } |
1016 | ||
1017 | MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>"); | |
6dc0f87e | 1018 | MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */ |
1da177e4 | 1019 | MODULE_DESCRIPTION |
63135e08 SF |
1020 | ("VFS to access servers complying with the SNIA CIFS Specification " |
1021 | "e.g. Samba and Windows"); | |
1da177e4 LT |
1022 | MODULE_VERSION(CIFS_VERSION); |
1023 | module_init(init_cifs) | |
1024 | module_exit(exit_cifs) |