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