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> |
1da177e4 LT |
39 | #include "cifsfs.h" |
40 | #include "cifspdu.h" | |
41 | #define DECLARE_GLOBALS_HERE | |
42 | #include "cifsglob.h" | |
43 | #include "cifsproto.h" | |
44 | #include "cifs_debug.h" | |
45 | #include "cifs_fs_sb.h" | |
46 | #include <linux/mm.h> | |
84a15b93 | 47 | #include <linux/key-type.h> |
6103335d | 48 | #include "dns_resolve.h" |
e545937a | 49 | #include "cifs_spnego.h" |
1da177e4 LT |
50 | #define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ |
51 | ||
52 | #ifdef CONFIG_CIFS_QUOTA | |
0d54b217 | 53 | static const struct quotactl_ops cifs_quotactl_ops; |
35c11fdd SF |
54 | #endif /* QUOTA */ |
55 | ||
1da177e4 LT |
56 | int cifsFYI = 0; |
57 | int cifsERROR = 1; | |
58 | int traceSMB = 0; | |
59 | unsigned int oplockEnabled = 1; | |
60 | unsigned int experimEnabled = 0; | |
61 | unsigned int linuxExtEnabled = 1; | |
62 | unsigned int lookupCacheEnabled = 1; | |
63 | unsigned int multiuser_mount = 0; | |
3979877e SF |
64 | unsigned int extended_security = CIFSSEC_DEF; |
65 | /* unsigned int ntlmv2_support = 0; */ | |
1da177e4 | 66 | unsigned int sign_CIFS_PDUs = 1; |
ee9b6d61 | 67 | static const struct super_operations cifs_super_ops; |
1da177e4 LT |
68 | unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE; |
69 | module_param(CIFSMaxBufSize, int, 0); | |
63135e08 SF |
70 | MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header). " |
71 | "Default: 16384 Range: 8192 to 130048"); | |
1da177e4 LT |
72 | unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL; |
73 | module_param(cifs_min_rcv, int, 0); | |
63135e08 SF |
74 | MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: " |
75 | "1 to 64"); | |
1da177e4 LT |
76 | unsigned int cifs_min_small = 30; |
77 | module_param(cifs_min_small, int, 0); | |
63135e08 SF |
78 | MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 " |
79 | "Range: 2 to 256"); | |
1da177e4 LT |
80 | unsigned int cifs_max_pending = CIFS_MAX_REQ; |
81 | module_param(cifs_max_pending, int, 0); | |
63135e08 SF |
82 | MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. " |
83 | "Default: 50 Range: 2 to 256"); | |
1da177e4 | 84 | |
1da177e4 LT |
85 | extern mempool_t *cifs_sm_req_poolp; |
86 | extern mempool_t *cifs_req_poolp; | |
87 | extern mempool_t *cifs_mid_poolp; | |
88 | ||
e18b890b | 89 | extern struct kmem_cache *cifs_oplock_cachep; |
1da177e4 LT |
90 | |
91 | static int | |
92 | cifs_read_super(struct super_block *sb, void *data, | |
93 | const char *devname, int silent) | |
94 | { | |
95 | struct inode *inode; | |
96 | struct cifs_sb_info *cifs_sb; | |
97 | int rc = 0; | |
50c2f753 | 98 | |
1b2b2126 SF |
99 | /* BB should we make this contingent on mount parm? */ |
100 | sb->s_flags |= MS_NODIRATIME | MS_NOATIME; | |
790fe579 | 101 | sb->s_fs_info = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL); |
1da177e4 | 102 | cifs_sb = CIFS_SB(sb); |
4523cc30 | 103 | if (cifs_sb == NULL) |
1da177e4 | 104 | return -ENOMEM; |
1da177e4 | 105 | |
8044f7f4 JA |
106 | rc = bdi_setup_and_register(&cifs_sb->bdi, "cifs", BDI_CAP_MAP_COPY); |
107 | if (rc) { | |
108 | kfree(cifs_sb); | |
109 | return rc; | |
110 | } | |
111 | ||
e6ab1582 IM |
112 | #ifdef CONFIG_CIFS_DFS_UPCALL |
113 | /* copy mount params to sb for use in submounts */ | |
114 | /* BB: should we move this after the mount so we | |
115 | * do not have to do the copy on failed mounts? | |
116 | * BB: May be it is better to do simple copy before | |
117 | * complex operation (mount), and in case of fail | |
118 | * just exit instead of doing mount and attempting | |
119 | * undo it if this copy fails?*/ | |
79ee9a8b SF |
120 | if (data) { |
121 | int len = strlen(data); | |
122 | cifs_sb->mountdata = kzalloc(len + 1, GFP_KERNEL); | |
123 | if (cifs_sb->mountdata == NULL) { | |
8044f7f4 | 124 | bdi_destroy(&cifs_sb->bdi); |
79ee9a8b SF |
125 | kfree(sb->s_fs_info); |
126 | sb->s_fs_info = NULL; | |
127 | return -ENOMEM; | |
128 | } | |
129 | strncpy(cifs_sb->mountdata, data, len + 1); | |
130 | cifs_sb->mountdata[len] = '\0'; | |
e6ab1582 | 131 | } |
e6ab1582 IM |
132 | #endif |
133 | ||
1da177e4 LT |
134 | rc = cifs_mount(sb, cifs_sb, data, devname); |
135 | ||
136 | if (rc) { | |
137 | if (!silent) | |
138 | cERROR(1, | |
139 | ("cifs_mount failed w/return code = %d", rc)); | |
140 | goto out_mount_failed; | |
141 | } | |
142 | ||
143 | sb->s_magic = CIFS_MAGIC_NUMBER; | |
144 | sb->s_op = &cifs_super_ops; | |
8044f7f4 | 145 | sb->s_bdi = &cifs_sb->bdi; |
4523cc30 | 146 | /* if (cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512) |
790fe579 SF |
147 | sb->s_blocksize = |
148 | cifs_sb->tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE; */ | |
1da177e4 LT |
149 | #ifdef CONFIG_CIFS_QUOTA |
150 | sb->s_qcop = &cifs_quotactl_ops; | |
151 | #endif | |
152 | sb->s_blocksize = CIFS_MAX_MSGSIZE; | |
153 | sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */ | |
bd433d4c | 154 | inode = cifs_root_iget(sb, ROOT_I); |
1da177e4 | 155 | |
ce634ab2 DH |
156 | if (IS_ERR(inode)) { |
157 | rc = PTR_ERR(inode); | |
158 | inode = NULL; | |
1da177e4 LT |
159 | goto out_no_root; |
160 | } | |
161 | ||
162 | sb->s_root = d_alloc_root(inode); | |
163 | ||
164 | if (!sb->s_root) { | |
165 | rc = -ENOMEM; | |
166 | goto out_no_root; | |
167 | } | |
50c2f753 | 168 | |
7521a3c5 SF |
169 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
170 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { | |
171 | cFYI(1, ("export ops supported")); | |
172 | sb->s_export_op = &cifs_export_ops; | |
173 | } | |
174 | #endif /* EXPERIMENTAL */ | |
1da177e4 LT |
175 | |
176 | return 0; | |
177 | ||
178 | out_no_root: | |
179 | cERROR(1, ("cifs_read_super: get root inode failed")); | |
180 | if (inode) | |
181 | iput(inode); | |
54b4602d | 182 | |
2c731afb | 183 | cifs_umount(sb, cifs_sb); |
1da177e4 LT |
184 | |
185 | out_mount_failed: | |
4523cc30 | 186 | if (cifs_sb) { |
e6ab1582 IM |
187 | #ifdef CONFIG_CIFS_DFS_UPCALL |
188 | if (cifs_sb->mountdata) { | |
189 | kfree(cifs_sb->mountdata); | |
190 | cifs_sb->mountdata = NULL; | |
191 | } | |
192 | #endif | |
6d729e44 | 193 | unload_nls(cifs_sb->local_nls); |
8044f7f4 | 194 | bdi_destroy(&cifs_sb->bdi); |
1da177e4 LT |
195 | kfree(cifs_sb); |
196 | } | |
197 | return rc; | |
198 | } | |
199 | ||
200 | static void | |
201 | cifs_put_super(struct super_block *sb) | |
202 | { | |
203 | int rc = 0; | |
204 | struct cifs_sb_info *cifs_sb; | |
205 | ||
206 | cFYI(1, ("In cifs_put_super")); | |
207 | cifs_sb = CIFS_SB(sb); | |
4523cc30 | 208 | if (cifs_sb == NULL) { |
790fe579 | 209 | cFYI(1, ("Empty cifs superblock info passed to unmount")); |
1da177e4 LT |
210 | return; |
211 | } | |
6cfd0148 CH |
212 | |
213 | lock_kernel(); | |
214 | ||
790fe579 | 215 | rc = cifs_umount(sb, cifs_sb); |
ad7a2926 | 216 | if (rc) |
1da177e4 | 217 | cERROR(1, ("cifs_umount failed with return code %d", rc)); |
e6ab1582 IM |
218 | #ifdef CONFIG_CIFS_DFS_UPCALL |
219 | if (cifs_sb->mountdata) { | |
220 | kfree(cifs_sb->mountdata); | |
221 | cifs_sb->mountdata = NULL; | |
222 | } | |
223 | #endif | |
224 | ||
1da177e4 | 225 | unload_nls(cifs_sb->local_nls); |
8044f7f4 | 226 | bdi_destroy(&cifs_sb->bdi); |
1da177e4 | 227 | kfree(cifs_sb); |
6cfd0148 CH |
228 | |
229 | unlock_kernel(); | |
1da177e4 LT |
230 | } |
231 | ||
232 | static int | |
726c3342 | 233 | cifs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 234 | { |
726c3342 | 235 | struct super_block *sb = dentry->d_sb; |
39da9847 SF |
236 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
237 | struct cifsTconInfo *tcon = cifs_sb->tcon; | |
c81156dd | 238 | int rc = -EOPNOTSUPP; |
39da9847 | 239 | int xid; |
1da177e4 LT |
240 | |
241 | xid = GetXid(); | |
242 | ||
1da177e4 LT |
243 | buf->f_type = CIFS_MAGIC_NUMBER; |
244 | ||
39da9847 SF |
245 | /* |
246 | * PATH_MAX may be too long - it would presumably be total path, | |
247 | * but note that some servers (includinng Samba 3) have a shorter | |
248 | * maximum path. | |
249 | * | |
250 | * Instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO. | |
251 | */ | |
252 | buf->f_namelen = PATH_MAX; | |
1da177e4 LT |
253 | buf->f_files = 0; /* undefined */ |
254 | buf->f_ffree = 0; /* unlimited */ | |
255 | ||
39da9847 SF |
256 | /* |
257 | * We could add a second check for a QFS Unix capability bit | |
258 | */ | |
259 | if ((tcon->ses->capabilities & CAP_UNIX) && | |
260 | (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability))) | |
261 | rc = CIFSSMBQFSPosixInfo(xid, tcon, buf); | |
262 | ||
263 | /* | |
264 | * Only need to call the old QFSInfo if failed on newer one, | |
265 | * e.g. by OS/2. | |
266 | **/ | |
267 | if (rc && (tcon->ses->capabilities & CAP_NT_SMBS)) | |
268 | rc = CIFSSMBQFSInfo(xid, tcon, buf); | |
269 | ||
270 | /* | |
271 | * Some old Windows servers also do not support level 103, retry with | |
272 | * older level one if old server failed the previous call or we | |
273 | * bypassed it because we detected that this was an older LANMAN sess | |
274 | */ | |
4523cc30 | 275 | if (rc) |
39da9847 SF |
276 | rc = SMBOldQFSInfo(xid, tcon, buf); |
277 | ||
1da177e4 | 278 | FreeXid(xid); |
39da9847 | 279 | return 0; |
1da177e4 LT |
280 | } |
281 | ||
e6305c43 | 282 | static int cifs_permission(struct inode *inode, int mask) |
1da177e4 LT |
283 | { |
284 | struct cifs_sb_info *cifs_sb; | |
285 | ||
286 | cifs_sb = CIFS_SB(inode->i_sb); | |
287 | ||
f696a365 MS |
288 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) { |
289 | if ((mask & MAY_EXEC) && !execute_ok(inode)) | |
290 | return -EACCES; | |
291 | else | |
292 | return 0; | |
293 | } else /* file mode might have been restricted at mount time | |
50c2f753 | 294 | on the client (above and beyond ACL on servers) for |
1da177e4 | 295 | servers which do not support setting and viewing mode bits, |
50c2f753 | 296 | so allowing client to check permissions is useful */ |
1da177e4 LT |
297 | return generic_permission(inode, mask, NULL); |
298 | } | |
299 | ||
e18b890b CL |
300 | static struct kmem_cache *cifs_inode_cachep; |
301 | static struct kmem_cache *cifs_req_cachep; | |
302 | static struct kmem_cache *cifs_mid_cachep; | |
303 | struct kmem_cache *cifs_oplock_cachep; | |
304 | static struct kmem_cache *cifs_sm_req_cachep; | |
1da177e4 LT |
305 | mempool_t *cifs_sm_req_poolp; |
306 | mempool_t *cifs_req_poolp; | |
307 | mempool_t *cifs_mid_poolp; | |
308 | ||
309 | static struct inode * | |
310 | cifs_alloc_inode(struct super_block *sb) | |
311 | { | |
312 | struct cifsInodeInfo *cifs_inode; | |
e94b1766 | 313 | cifs_inode = kmem_cache_alloc(cifs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
314 | if (!cifs_inode) |
315 | return NULL; | |
316 | cifs_inode->cifsAttrs = 0x20; /* default */ | |
1da177e4 | 317 | cifs_inode->time = 0; |
cea21805 | 318 | cifs_inode->write_behind_rc = 0; |
1da177e4 LT |
319 | /* Until the file is open and we have gotten oplock |
320 | info back from the server, can not assume caching of | |
321 | file data or metadata */ | |
4b18f2a9 SF |
322 | cifs_inode->clientCanCacheRead = false; |
323 | cifs_inode->clientCanCacheAll = false; | |
9a8165fc | 324 | cifs_inode->delete_pending = false; |
df2cf170 | 325 | cifs_inode->invalid_mapping = false; |
1da177e4 | 326 | cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ |
fbec9ab9 | 327 | cifs_inode->server_eof = 0; |
50c2f753 | 328 | |
1b2b2126 SF |
329 | /* Can not set i_flags here - they get immediately overwritten |
330 | to zero by the VFS */ | |
331 | /* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME;*/ | |
1da177e4 LT |
332 | INIT_LIST_HEAD(&cifs_inode->openFileList); |
333 | return &cifs_inode->vfs_inode; | |
334 | } | |
335 | ||
336 | static void | |
337 | cifs_destroy_inode(struct inode *inode) | |
338 | { | |
339 | kmem_cache_free(cifs_inode_cachep, CIFS_I(inode)); | |
340 | } | |
341 | ||
61f98ffd JL |
342 | static void |
343 | cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server) | |
344 | { | |
345 | seq_printf(s, ",addr="); | |
346 | ||
347 | switch (server->addr.sockAddr.sin_family) { | |
348 | case AF_INET: | |
349 | seq_printf(s, "%pI4", &server->addr.sockAddr.sin_addr.s_addr); | |
350 | break; | |
351 | case AF_INET6: | |
352 | seq_printf(s, "%pI6", | |
353 | &server->addr.sockAddr6.sin6_addr.s6_addr); | |
354 | if (server->addr.sockAddr6.sin6_scope_id) | |
355 | seq_printf(s, "%%%u", | |
356 | server->addr.sockAddr6.sin6_scope_id); | |
357 | break; | |
358 | default: | |
359 | seq_printf(s, "(unknown)"); | |
360 | } | |
361 | } | |
362 | ||
1da177e4 LT |
363 | /* |
364 | * cifs_show_options() is for displaying mount options in /proc/mounts. | |
365 | * Not all settable options are displayed but most of the important | |
366 | * ones are. | |
367 | */ | |
368 | static int | |
369 | cifs_show_options(struct seq_file *s, struct vfsmount *m) | |
370 | { | |
8e047d09 JL |
371 | struct cifs_sb_info *cifs_sb = CIFS_SB(m->mnt_sb); |
372 | struct cifsTconInfo *tcon = cifs_sb->tcon; | |
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 | ||
8616e0fc | 380 | seq_printf(s, ",uid=%d", cifs_sb->mnt_uid); |
340481a3 JL |
381 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
382 | seq_printf(s, ",forceuid"); | |
4486d6ed JL |
383 | else |
384 | seq_printf(s, ",noforceuid"); | |
340481a3 | 385 | |
8616e0fc | 386 | seq_printf(s, ",gid=%d", cifs_sb->mnt_gid); |
340481a3 JL |
387 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
388 | seq_printf(s, ",forcegid"); | |
4486d6ed JL |
389 | else |
390 | seq_printf(s, ",noforcegid"); | |
8616e0fc | 391 | |
61f98ffd | 392 | cifs_show_address(s, tcon->ses->server); |
1da177e4 | 393 | |
8616e0fc JL |
394 | if (!tcon->unix_ext) |
395 | seq_printf(s, ",file_mode=0%o,dir_mode=0%o", | |
2b280fab SF |
396 | cifs_sb->mnt_file_mode, |
397 | cifs_sb->mnt_dir_mode); | |
8616e0fc JL |
398 | if (tcon->seal) |
399 | seq_printf(s, ",seal"); | |
400 | if (tcon->nocase) | |
401 | seq_printf(s, ",nocase"); | |
402 | if (tcon->retry) | |
403 | seq_printf(s, ",hard"); | |
404 | if (cifs_sb->prepath) | |
405 | seq_printf(s, ",prepath=%s", cifs_sb->prepath); | |
406 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) | |
407 | seq_printf(s, ",posixpaths"); | |
408 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) | |
409 | seq_printf(s, ",setuids"); | |
410 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) | |
411 | seq_printf(s, ",serverino"); | |
412 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) | |
413 | seq_printf(s, ",directio"); | |
414 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) | |
415 | seq_printf(s, ",nouser_xattr"); | |
416 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR) | |
417 | seq_printf(s, ",mapchars"); | |
418 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) | |
419 | seq_printf(s, ",sfu"); | |
420 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) | |
421 | seq_printf(s, ",nobrl"); | |
422 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) | |
423 | seq_printf(s, ",cifsacl"); | |
424 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) | |
425 | seq_printf(s, ",dynperm"); | |
426 | if (m->mnt_sb->s_flags & MS_POSIXACL) | |
427 | seq_printf(s, ",acl"); | |
428 | ||
429 | seq_printf(s, ",rsize=%d", cifs_sb->rsize); | |
430 | seq_printf(s, ",wsize=%d", cifs_sb->wsize); | |
431 | ||
1da177e4 LT |
432 | return 0; |
433 | } | |
434 | ||
435 | #ifdef CONFIG_CIFS_QUOTA | |
50c2f753 SF |
436 | int cifs_xquota_set(struct super_block *sb, int quota_type, qid_t qid, |
437 | struct fs_disk_quota *pdquota) | |
1da177e4 LT |
438 | { |
439 | int xid; | |
440 | int rc = 0; | |
441 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
442 | struct cifsTconInfo *pTcon; | |
50c2f753 | 443 | |
4523cc30 | 444 | if (cifs_sb) |
1da177e4 LT |
445 | pTcon = cifs_sb->tcon; |
446 | else | |
447 | return -EIO; | |
448 | ||
449 | ||
450 | xid = GetXid(); | |
4523cc30 | 451 | if (pTcon) { |
50c2f753 | 452 | cFYI(1, ("set type: 0x%x id: %d", quota_type, qid)); |
61e74801 | 453 | } else |
95ba7362 | 454 | rc = -EIO; |
1da177e4 LT |
455 | |
456 | FreeXid(xid); | |
457 | return rc; | |
458 | } | |
459 | ||
50c2f753 SF |
460 | int cifs_xquota_get(struct super_block *sb, int quota_type, qid_t qid, |
461 | struct fs_disk_quota *pdquota) | |
1da177e4 LT |
462 | { |
463 | int xid; | |
464 | int rc = 0; | |
465 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
466 | struct cifsTconInfo *pTcon; | |
467 | ||
4523cc30 | 468 | if (cifs_sb) |
1da177e4 LT |
469 | pTcon = cifs_sb->tcon; |
470 | else | |
471 | return -EIO; | |
472 | ||
473 | xid = GetXid(); | |
4523cc30 | 474 | if (pTcon) { |
50c2f753 | 475 | cFYI(1, ("set type: 0x%x id: %d", quota_type, qid)); |
61e74801 | 476 | } else |
1da177e4 | 477 | rc = -EIO; |
1da177e4 LT |
478 | |
479 | FreeXid(xid); | |
480 | return rc; | |
481 | } | |
482 | ||
50c2f753 | 483 | int cifs_xstate_set(struct super_block *sb, unsigned int flags, int operation) |
1da177e4 | 484 | { |
50c2f753 | 485 | int xid; |
1da177e4 LT |
486 | int rc = 0; |
487 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
488 | struct cifsTconInfo *pTcon; | |
489 | ||
4523cc30 | 490 | if (cifs_sb) |
1da177e4 LT |
491 | pTcon = cifs_sb->tcon; |
492 | else | |
493 | return -EIO; | |
494 | ||
495 | xid = GetXid(); | |
4523cc30 | 496 | if (pTcon) { |
50c2f753 | 497 | cFYI(1, ("flags: 0x%x operation: 0x%x", flags, operation)); |
61e74801 | 498 | } else |
1da177e4 | 499 | rc = -EIO; |
1da177e4 LT |
500 | |
501 | FreeXid(xid); | |
502 | return rc; | |
503 | } | |
504 | ||
50c2f753 | 505 | int cifs_xstate_get(struct super_block *sb, struct fs_quota_stat *qstats) |
1da177e4 LT |
506 | { |
507 | int xid; | |
508 | int rc = 0; | |
509 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
510 | struct cifsTconInfo *pTcon; | |
511 | ||
61e74801 | 512 | if (cifs_sb) |
1da177e4 | 513 | pTcon = cifs_sb->tcon; |
61e74801 | 514 | else |
1da177e4 | 515 | return -EIO; |
61e74801 | 516 | |
1da177e4 | 517 | xid = GetXid(); |
4523cc30 | 518 | if (pTcon) { |
50c2f753 | 519 | cFYI(1, ("pqstats %p", qstats)); |
61e74801 | 520 | } else |
1da177e4 | 521 | rc = -EIO; |
1da177e4 LT |
522 | |
523 | FreeXid(xid); | |
524 | return rc; | |
525 | } | |
526 | ||
0d54b217 | 527 | static const struct quotactl_ops cifs_quotactl_ops = { |
1da177e4 | 528 | .set_xquota = cifs_xquota_set, |
6f7e8f37 | 529 | .get_xquota = cifs_xquota_get, |
1da177e4 LT |
530 | .set_xstate = cifs_xstate_set, |
531 | .get_xstate = cifs_xstate_get, | |
532 | }; | |
533 | #endif | |
534 | ||
42faad99 | 535 | static void cifs_umount_begin(struct super_block *sb) |
68058e75 | 536 | { |
42faad99 | 537 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
50c2f753 | 538 | struct cifsTconInfo *tcon; |
68058e75 | 539 | |
4523cc30 | 540 | if (cifs_sb == NULL) |
9e2e85f8 SF |
541 | return; |
542 | ||
543 | tcon = cifs_sb->tcon; | |
4523cc30 | 544 | if (tcon == NULL) |
9e2e85f8 | 545 | return; |
f1987b44 JL |
546 | |
547 | read_lock(&cifs_tcp_ses_lock); | |
ad8034f1 SF |
548 | if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) { |
549 | /* we have other mounts to same share or we have | |
550 | already tried to force umount this and woken up | |
551 | all waiting network requests, nothing to do */ | |
552 | read_unlock(&cifs_tcp_ses_lock); | |
553 | return; | |
554 | } else if (tcon->tc_count == 1) | |
5e1253b5 | 555 | tcon->tidStatus = CifsExiting; |
f1987b44 | 556 | read_unlock(&cifs_tcp_ses_lock); |
5e1253b5 | 557 | |
3a5ff61c | 558 | /* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */ |
7b7abfe3 | 559 | /* cancel_notify_requests(tcon); */ |
50c2f753 SF |
560 | if (tcon->ses && tcon->ses->server) { |
561 | cFYI(1, ("wake up tasks now - umount begin not complete")); | |
9e2e85f8 | 562 | wake_up_all(&tcon->ses->server->request_q); |
6ab16d24 SF |
563 | wake_up_all(&tcon->ses->server->response_q); |
564 | msleep(1); /* yield */ | |
565 | /* we have to kick the requests once more */ | |
566 | wake_up_all(&tcon->ses->server->response_q); | |
567 | msleep(1); | |
5e1253b5 | 568 | } |
68058e75 SF |
569 | |
570 | return; | |
571 | } | |
68058e75 | 572 | |
bf97d287 SF |
573 | #ifdef CONFIG_CIFS_STATS2 |
574 | static int cifs_show_stats(struct seq_file *s, struct vfsmount *mnt) | |
575 | { | |
576 | /* BB FIXME */ | |
577 | return 0; | |
578 | } | |
579 | #endif | |
580 | ||
1da177e4 LT |
581 | static int cifs_remount(struct super_block *sb, int *flags, char *data) |
582 | { | |
583 | *flags |= MS_NODIRATIME; | |
584 | return 0; | |
585 | } | |
586 | ||
ee9b6d61 | 587 | static const struct super_operations cifs_super_ops = { |
1da177e4 LT |
588 | .put_super = cifs_put_super, |
589 | .statfs = cifs_statfs, | |
590 | .alloc_inode = cifs_alloc_inode, | |
591 | .destroy_inode = cifs_destroy_inode, | |
50c2f753 SF |
592 | /* .drop_inode = generic_delete_inode, |
593 | .delete_inode = cifs_delete_inode, */ /* Do not need above two | |
594 | functions unless later we add lazy close of inodes or unless the | |
595 | kernel forgets to call us with the same number of releases (closes) | |
596 | as opens */ | |
1da177e4 | 597 | .show_options = cifs_show_options, |
7b7abfe3 | 598 | .umount_begin = cifs_umount_begin, |
1da177e4 | 599 | .remount_fs = cifs_remount, |
bf97d287 | 600 | #ifdef CONFIG_CIFS_STATS2 |
f46d3e11 | 601 | .show_stats = cifs_show_stats, |
bf97d287 | 602 | #endif |
1da177e4 LT |
603 | }; |
604 | ||
454e2398 | 605 | static int |
1da177e4 | 606 | cifs_get_sb(struct file_system_type *fs_type, |
454e2398 | 607 | int flags, const char *dev_name, void *data, struct vfsmount *mnt) |
1da177e4 LT |
608 | { |
609 | int rc; | |
610 | struct super_block *sb = sget(fs_type, NULL, set_anon_super, NULL); | |
611 | ||
612 | cFYI(1, ("Devname: %s flags: %d ", dev_name, flags)); | |
613 | ||
614 | if (IS_ERR(sb)) | |
454e2398 | 615 | return PTR_ERR(sb); |
1da177e4 LT |
616 | |
617 | sb->s_flags = flags; | |
618 | ||
9b04c997 | 619 | rc = cifs_read_super(sb, data, dev_name, flags & MS_SILENT ? 1 : 0); |
1da177e4 | 620 | if (rc) { |
6f5bbff9 | 621 | deactivate_locked_super(sb); |
454e2398 | 622 | return rc; |
1da177e4 LT |
623 | } |
624 | sb->s_flags |= MS_ACTIVE; | |
a3ec947c SB |
625 | simple_set_mnt(mnt, sb); |
626 | return 0; | |
1da177e4 LT |
627 | } |
628 | ||
027445c3 BP |
629 | static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov, |
630 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 631 | { |
e6a00296 | 632 | struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode; |
1da177e4 LT |
633 | ssize_t written; |
634 | ||
027445c3 | 635 | written = generic_file_aio_write(iocb, iov, nr_segs, pos); |
87c89dd7 SF |
636 | if (!CIFS_I(inode)->clientCanCacheAll) |
637 | filemap_fdatawrite(inode->i_mapping); | |
1da177e4 LT |
638 | return written; |
639 | } | |
640 | ||
c32a0b68 SF |
641 | static loff_t cifs_llseek(struct file *file, loff_t offset, int origin) |
642 | { | |
643 | /* origin == SEEK_END => we must revalidate the cached file length */ | |
0889a944 | 644 | if (origin == SEEK_END) { |
030e9d81 SF |
645 | int retval; |
646 | ||
647 | /* some applications poll for the file length in this strange | |
648 | way so we must seek to end on non-oplocked files by | |
649 | setting the revalidate time to zero */ | |
c33f8d32 | 650 | CIFS_I(file->f_path.dentry->d_inode)->time = 0; |
030e9d81 | 651 | |
abab095d | 652 | retval = cifs_revalidate_file(file); |
c32a0b68 SF |
653 | if (retval < 0) |
654 | return (loff_t)retval; | |
655 | } | |
9465efc9 | 656 | return generic_file_llseek_unlocked(file, offset, origin); |
c32a0b68 SF |
657 | } |
658 | ||
84210e91 SF |
659 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
660 | static int cifs_setlease(struct file *file, long arg, struct file_lock **lease) | |
661 | { | |
662 | /* note that this is called by vfs setlease with the BKL held | |
663 | although I doubt that BKL is needed here in cifs */ | |
664 | struct inode *inode = file->f_path.dentry->d_inode; | |
665 | ||
666 | if (!(S_ISREG(inode->i_mode))) | |
667 | return -EINVAL; | |
668 | ||
669 | /* check if file is oplocked */ | |
670 | if (((arg == F_RDLCK) && | |
671 | (CIFS_I(inode)->clientCanCacheRead)) || | |
672 | ((arg == F_WRLCK) && | |
673 | (CIFS_I(inode)->clientCanCacheAll))) | |
674 | return generic_setlease(file, arg, lease); | |
675 | else if (CIFS_SB(inode->i_sb)->tcon->local_lease && | |
676 | !CIFS_I(inode)->clientCanCacheRead) | |
677 | /* If the server claims to support oplock on this | |
678 | file, then we still need to check oplock even | |
679 | if the local_lease mount option is set, but there | |
680 | are servers which do not support oplock for which | |
681 | this mount option may be useful if the user | |
682 | knows that the file won't be changed on the server | |
683 | by anyone else */ | |
684 | return generic_setlease(file, arg, lease); | |
685 | else | |
686 | return -EAGAIN; | |
687 | } | |
688 | #endif | |
689 | ||
e6ab1582 | 690 | struct file_system_type cifs_fs_type = { |
1da177e4 LT |
691 | .owner = THIS_MODULE, |
692 | .name = "cifs", | |
693 | .get_sb = cifs_get_sb, | |
694 | .kill_sb = kill_anon_super, | |
695 | /* .fs_flags */ | |
696 | }; | |
754661f1 | 697 | const struct inode_operations cifs_dir_inode_ops = { |
1da177e4 LT |
698 | .create = cifs_create, |
699 | .lookup = cifs_lookup, | |
700 | .getattr = cifs_getattr, | |
701 | .unlink = cifs_unlink, | |
702 | .link = cifs_hardlink, | |
703 | .mkdir = cifs_mkdir, | |
704 | .rmdir = cifs_rmdir, | |
705 | .rename = cifs_rename, | |
706 | .permission = cifs_permission, | |
707 | /* revalidate:cifs_revalidate, */ | |
708 | .setattr = cifs_setattr, | |
709 | .symlink = cifs_symlink, | |
710 | .mknod = cifs_mknod, | |
711 | #ifdef CONFIG_CIFS_XATTR | |
712 | .setxattr = cifs_setxattr, | |
713 | .getxattr = cifs_getxattr, | |
714 | .listxattr = cifs_listxattr, | |
715 | .removexattr = cifs_removexattr, | |
716 | #endif | |
717 | }; | |
718 | ||
754661f1 | 719 | const struct inode_operations cifs_file_inode_ops = { |
1da177e4 LT |
720 | /* revalidate:cifs_revalidate, */ |
721 | .setattr = cifs_setattr, | |
722 | .getattr = cifs_getattr, /* do we need this anymore? */ | |
723 | .rename = cifs_rename, | |
724 | .permission = cifs_permission, | |
725 | #ifdef CONFIG_CIFS_XATTR | |
726 | .setxattr = cifs_setxattr, | |
727 | .getxattr = cifs_getxattr, | |
728 | .listxattr = cifs_listxattr, | |
729 | .removexattr = cifs_removexattr, | |
50c2f753 | 730 | #endif |
1da177e4 LT |
731 | }; |
732 | ||
754661f1 | 733 | const struct inode_operations cifs_symlink_inode_ops = { |
50c2f753 | 734 | .readlink = generic_readlink, |
1da177e4 LT |
735 | .follow_link = cifs_follow_link, |
736 | .put_link = cifs_put_link, | |
737 | .permission = cifs_permission, | |
738 | /* BB add the following two eventually */ | |
739 | /* revalidate: cifs_revalidate, | |
740 | setattr: cifs_notify_change, *//* BB do we need notify change */ | |
741 | #ifdef CONFIG_CIFS_XATTR | |
742 | .setxattr = cifs_setxattr, | |
743 | .getxattr = cifs_getxattr, | |
744 | .listxattr = cifs_listxattr, | |
745 | .removexattr = cifs_removexattr, | |
50c2f753 | 746 | #endif |
1da177e4 LT |
747 | }; |
748 | ||
4b6f5d20 | 749 | const struct file_operations cifs_file_ops = { |
87c89dd7 SF |
750 | .read = do_sync_read, |
751 | .write = do_sync_write, | |
87c89dd7 SF |
752 | .aio_read = generic_file_aio_read, |
753 | .aio_write = cifs_file_aio_write, | |
1da177e4 LT |
754 | .open = cifs_open, |
755 | .release = cifs_close, | |
756 | .lock = cifs_lock, | |
757 | .fsync = cifs_fsync, | |
758 | .flush = cifs_flush, | |
759 | .mmap = cifs_file_mmap, | |
5ffc4ef4 | 760 | .splice_read = generic_file_splice_read, |
c32a0b68 | 761 | .llseek = cifs_llseek, |
c67593a0 | 762 | #ifdef CONFIG_CIFS_POSIX |
f9ddcca4 | 763 | .unlocked_ioctl = cifs_ioctl, |
c67593a0 SF |
764 | #endif /* CONFIG_CIFS_POSIX */ |
765 | ||
1da177e4 | 766 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
84210e91 | 767 | .setlease = cifs_setlease, |
1da177e4 LT |
768 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
769 | }; | |
770 | ||
4b6f5d20 | 771 | const struct file_operations cifs_file_direct_ops = { |
a994b8fa | 772 | /* no aio, no readv - |
1da177e4 LT |
773 | BB reevaluate whether they can be done with directio, no cache */ |
774 | .read = cifs_user_read, | |
775 | .write = cifs_user_write, | |
776 | .open = cifs_open, | |
777 | .release = cifs_close, | |
778 | .lock = cifs_lock, | |
779 | .fsync = cifs_fsync, | |
780 | .flush = cifs_flush, | |
a994b8fa | 781 | .mmap = cifs_file_mmap, |
5ffc4ef4 | 782 | .splice_read = generic_file_splice_read, |
c67593a0 | 783 | #ifdef CONFIG_CIFS_POSIX |
f9ddcca4 | 784 | .unlocked_ioctl = cifs_ioctl, |
c67593a0 | 785 | #endif /* CONFIG_CIFS_POSIX */ |
c32a0b68 | 786 | .llseek = cifs_llseek, |
1da177e4 | 787 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
84210e91 | 788 | .setlease = cifs_setlease, |
1da177e4 LT |
789 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
790 | }; | |
4b6f5d20 | 791 | const struct file_operations cifs_file_nobrl_ops = { |
87c89dd7 SF |
792 | .read = do_sync_read, |
793 | .write = do_sync_write, | |
87c89dd7 SF |
794 | .aio_read = generic_file_aio_read, |
795 | .aio_write = cifs_file_aio_write, | |
796 | .open = cifs_open, | |
797 | .release = cifs_close, | |
798 | .fsync = cifs_fsync, | |
799 | .flush = cifs_flush, | |
800 | .mmap = cifs_file_mmap, | |
5ffc4ef4 | 801 | .splice_read = generic_file_splice_read, |
c32a0b68 | 802 | .llseek = cifs_llseek, |
8b94bcb9 | 803 | #ifdef CONFIG_CIFS_POSIX |
f9ddcca4 | 804 | .unlocked_ioctl = cifs_ioctl, |
8b94bcb9 SF |
805 | #endif /* CONFIG_CIFS_POSIX */ |
806 | ||
807 | #ifdef CONFIG_CIFS_EXPERIMENTAL | |
84210e91 | 808 | .setlease = cifs_setlease, |
8b94bcb9 SF |
809 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
810 | }; | |
811 | ||
4b6f5d20 | 812 | const struct file_operations cifs_file_direct_nobrl_ops = { |
50c2f753 | 813 | /* no mmap, no aio, no readv - |
87c89dd7 SF |
814 | BB reevaluate whether they can be done with directio, no cache */ |
815 | .read = cifs_user_read, | |
816 | .write = cifs_user_write, | |
817 | .open = cifs_open, | |
818 | .release = cifs_close, | |
819 | .fsync = cifs_fsync, | |
820 | .flush = cifs_flush, | |
810627a0 | 821 | .mmap = cifs_file_mmap, |
5ffc4ef4 | 822 | .splice_read = generic_file_splice_read, |
8b94bcb9 | 823 | #ifdef CONFIG_CIFS_POSIX |
f9ddcca4 | 824 | .unlocked_ioctl = cifs_ioctl, |
8b94bcb9 | 825 | #endif /* CONFIG_CIFS_POSIX */ |
c32a0b68 | 826 | .llseek = cifs_llseek, |
8b94bcb9 | 827 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
84210e91 | 828 | .setlease = cifs_setlease, |
8b94bcb9 SF |
829 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
830 | }; | |
1da177e4 | 831 | |
4b6f5d20 | 832 | const struct file_operations cifs_dir_ops = { |
1da177e4 LT |
833 | .readdir = cifs_readdir, |
834 | .release = cifs_closedir, | |
835 | .read = generic_read_dir, | |
f9ddcca4 | 836 | .unlocked_ioctl = cifs_ioctl, |
3222a3e5 | 837 | .llseek = generic_file_llseek, |
1da177e4 LT |
838 | }; |
839 | ||
840 | static void | |
51cc5068 | 841 | cifs_init_once(void *inode) |
1da177e4 LT |
842 | { |
843 | struct cifsInodeInfo *cifsi = inode; | |
844 | ||
a35afb83 CL |
845 | inode_init_once(&cifsi->vfs_inode); |
846 | INIT_LIST_HEAD(&cifsi->lockList); | |
1da177e4 LT |
847 | } |
848 | ||
849 | static int | |
850 | cifs_init_inodecache(void) | |
851 | { | |
852 | cifs_inode_cachep = kmem_cache_create("cifs_inode_cache", | |
26f57364 | 853 | sizeof(struct cifsInodeInfo), |
fffb60f9 PJ |
854 | 0, (SLAB_RECLAIM_ACCOUNT| |
855 | SLAB_MEM_SPREAD), | |
20c2df83 | 856 | cifs_init_once); |
1da177e4 LT |
857 | if (cifs_inode_cachep == NULL) |
858 | return -ENOMEM; | |
859 | ||
860 | return 0; | |
861 | } | |
862 | ||
863 | static void | |
864 | cifs_destroy_inodecache(void) | |
865 | { | |
1a1d92c1 | 866 | kmem_cache_destroy(cifs_inode_cachep); |
1da177e4 LT |
867 | } |
868 | ||
869 | static int | |
870 | cifs_init_request_bufs(void) | |
871 | { | |
4523cc30 | 872 | if (CIFSMaxBufSize < 8192) { |
1da177e4 LT |
873 | /* Buffer size can not be smaller than 2 * PATH_MAX since maximum |
874 | Unicode path name has to fit in any SMB/CIFS path based frames */ | |
875 | CIFSMaxBufSize = 8192; | |
876 | } else if (CIFSMaxBufSize > 1024*127) { | |
877 | CIFSMaxBufSize = 1024 * 127; | |
878 | } else { | |
879 | CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/ | |
880 | } | |
881 | /* cERROR(1,("CIFSMaxBufSize %d 0x%x",CIFSMaxBufSize,CIFSMaxBufSize)); */ | |
882 | cifs_req_cachep = kmem_cache_create("cifs_request", | |
883 | CIFSMaxBufSize + | |
884 | MAX_CIFS_HDR_SIZE, 0, | |
20c2df83 | 885 | SLAB_HWCACHE_ALIGN, NULL); |
1da177e4 LT |
886 | if (cifs_req_cachep == NULL) |
887 | return -ENOMEM; | |
888 | ||
4523cc30 | 889 | if (cifs_min_rcv < 1) |
1da177e4 LT |
890 | cifs_min_rcv = 1; |
891 | else if (cifs_min_rcv > 64) { | |
892 | cifs_min_rcv = 64; | |
50c2f753 | 893 | cERROR(1, ("cifs_min_rcv set to maximum (64)")); |
1da177e4 LT |
894 | } |
895 | ||
93d2341c MD |
896 | cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv, |
897 | cifs_req_cachep); | |
1da177e4 | 898 | |
4523cc30 | 899 | if (cifs_req_poolp == NULL) { |
1da177e4 LT |
900 | kmem_cache_destroy(cifs_req_cachep); |
901 | return -ENOMEM; | |
902 | } | |
ec637e3f | 903 | /* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and |
1da177e4 LT |
904 | almost all handle based requests (but not write response, nor is it |
905 | sufficient for path based requests). A smaller size would have | |
50c2f753 | 906 | been more efficient (compacting multiple slab items on one 4k page) |
1da177e4 LT |
907 | for the case in which debug was on, but this larger size allows |
908 | more SMBs to use small buffer alloc and is still much more | |
6dc0f87e | 909 | efficient to alloc 1 per page off the slab compared to 17K (5page) |
1da177e4 LT |
910 | alloc of large cifs buffers even when page debugging is on */ |
911 | cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq", | |
6dc0f87e | 912 | MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN, |
20c2df83 | 913 | NULL); |
1da177e4 LT |
914 | if (cifs_sm_req_cachep == NULL) { |
915 | mempool_destroy(cifs_req_poolp); | |
916 | kmem_cache_destroy(cifs_req_cachep); | |
6dc0f87e | 917 | return -ENOMEM; |
1da177e4 LT |
918 | } |
919 | ||
4523cc30 | 920 | if (cifs_min_small < 2) |
1da177e4 LT |
921 | cifs_min_small = 2; |
922 | else if (cifs_min_small > 256) { | |
923 | cifs_min_small = 256; | |
6dc0f87e | 924 | cFYI(1, ("cifs_min_small set to maximum (256)")); |
1da177e4 LT |
925 | } |
926 | ||
93d2341c MD |
927 | cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small, |
928 | cifs_sm_req_cachep); | |
1da177e4 | 929 | |
4523cc30 | 930 | if (cifs_sm_req_poolp == NULL) { |
1da177e4 LT |
931 | mempool_destroy(cifs_req_poolp); |
932 | kmem_cache_destroy(cifs_req_cachep); | |
933 | kmem_cache_destroy(cifs_sm_req_cachep); | |
934 | return -ENOMEM; | |
935 | } | |
936 | ||
937 | return 0; | |
938 | } | |
939 | ||
940 | static void | |
941 | cifs_destroy_request_bufs(void) | |
942 | { | |
943 | mempool_destroy(cifs_req_poolp); | |
1a1d92c1 | 944 | kmem_cache_destroy(cifs_req_cachep); |
1da177e4 | 945 | mempool_destroy(cifs_sm_req_poolp); |
1a1d92c1 | 946 | kmem_cache_destroy(cifs_sm_req_cachep); |
1da177e4 LT |
947 | } |
948 | ||
949 | static int | |
950 | cifs_init_mids(void) | |
951 | { | |
952 | cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids", | |
26f57364 SF |
953 | sizeof(struct mid_q_entry), 0, |
954 | SLAB_HWCACHE_ALIGN, NULL); | |
1da177e4 LT |
955 | if (cifs_mid_cachep == NULL) |
956 | return -ENOMEM; | |
957 | ||
93d2341c MD |
958 | /* 3 is a reasonable minimum number of simultaneous operations */ |
959 | cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep); | |
4523cc30 | 960 | if (cifs_mid_poolp == NULL) { |
1da177e4 LT |
961 | kmem_cache_destroy(cifs_mid_cachep); |
962 | return -ENOMEM; | |
963 | } | |
964 | ||
965 | cifs_oplock_cachep = kmem_cache_create("cifs_oplock_structs", | |
26f57364 SF |
966 | sizeof(struct oplock_q_entry), 0, |
967 | SLAB_HWCACHE_ALIGN, NULL); | |
1da177e4 | 968 | if (cifs_oplock_cachep == NULL) { |
1da177e4 | 969 | mempool_destroy(cifs_mid_poolp); |
e6985c7f | 970 | kmem_cache_destroy(cifs_mid_cachep); |
1da177e4 LT |
971 | return -ENOMEM; |
972 | } | |
973 | ||
974 | return 0; | |
975 | } | |
976 | ||
977 | static void | |
978 | cifs_destroy_mids(void) | |
979 | { | |
980 | mempool_destroy(cifs_mid_poolp); | |
1a1d92c1 AD |
981 | kmem_cache_destroy(cifs_mid_cachep); |
982 | kmem_cache_destroy(cifs_oplock_cachep); | |
1da177e4 LT |
983 | } |
984 | ||
1da177e4 LT |
985 | static int __init |
986 | init_cifs(void) | |
987 | { | |
988 | int rc = 0; | |
1da177e4 | 989 | cifs_proc_init(); |
e7ddee90 | 990 | INIT_LIST_HEAD(&cifs_tcp_ses_list); |
4ca9c190 SF |
991 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
992 | INIT_LIST_HEAD(&GlobalDnotifyReqList); | |
993 | INIT_LIST_HEAD(&GlobalDnotifyRsp_Q); | |
6dc0f87e | 994 | #endif |
1da177e4 LT |
995 | /* |
996 | * Initialize Global counters | |
997 | */ | |
998 | atomic_set(&sesInfoAllocCount, 0); | |
999 | atomic_set(&tconInfoAllocCount, 0); | |
6dc0f87e | 1000 | atomic_set(&tcpSesAllocCount, 0); |
1da177e4 LT |
1001 | atomic_set(&tcpSesReconnectCount, 0); |
1002 | atomic_set(&tconInfoReconnectCount, 0); | |
1003 | ||
1004 | atomic_set(&bufAllocCount, 0); | |
4498eed5 SF |
1005 | atomic_set(&smBufAllocCount, 0); |
1006 | #ifdef CONFIG_CIFS_STATS2 | |
1007 | atomic_set(&totBufAllocCount, 0); | |
1008 | atomic_set(&totSmBufAllocCount, 0); | |
1009 | #endif /* CONFIG_CIFS_STATS2 */ | |
1010 | ||
1da177e4 LT |
1011 | atomic_set(&midCount, 0); |
1012 | GlobalCurrentXid = 0; | |
1013 | GlobalTotalActiveXid = 0; | |
1014 | GlobalMaxActiveXid = 0; | |
2cd646a2 | 1015 | memset(Local_System_Name, 0, 15); |
1da177e4 | 1016 | rwlock_init(&GlobalSMBSeslock); |
e7ddee90 | 1017 | rwlock_init(&cifs_tcp_ses_lock); |
1da177e4 LT |
1018 | spin_lock_init(&GlobalMid_Lock); |
1019 | ||
4523cc30 | 1020 | if (cifs_max_pending < 2) { |
1da177e4 | 1021 | cifs_max_pending = 2; |
6dc0f87e | 1022 | cFYI(1, ("cifs_max_pending set to min of 2")); |
4523cc30 | 1023 | } else if (cifs_max_pending > 256) { |
1da177e4 | 1024 | cifs_max_pending = 256; |
6dc0f87e | 1025 | cFYI(1, ("cifs_max_pending set to max of 256")); |
1da177e4 LT |
1026 | } |
1027 | ||
1028 | rc = cifs_init_inodecache(); | |
45af7a0f SF |
1029 | if (rc) |
1030 | goto out_clean_proc; | |
1031 | ||
1032 | rc = cifs_init_mids(); | |
1033 | if (rc) | |
1034 | goto out_destroy_inodecache; | |
1035 | ||
1036 | rc = cifs_init_request_bufs(); | |
1037 | if (rc) | |
1038 | goto out_destroy_mids; | |
1039 | ||
1040 | rc = register_filesystem(&cifs_fs_type); | |
1041 | if (rc) | |
1042 | goto out_destroy_request_bufs; | |
84a15b93 JL |
1043 | #ifdef CONFIG_CIFS_UPCALL |
1044 | rc = register_key_type(&cifs_spnego_key_type); | |
1045 | if (rc) | |
1046 | goto out_unregister_filesystem; | |
6103335d SF |
1047 | #endif |
1048 | #ifdef CONFIG_CIFS_DFS_UPCALL | |
1049 | rc = register_key_type(&key_type_dns_resolver); | |
1050 | if (rc) | |
1051 | goto out_unregister_key_type; | |
84a15b93 | 1052 | #endif |
0109d7e6 | 1053 | rc = slow_work_register_user(THIS_MODULE); |
3bc303c2 JL |
1054 | if (rc) |
1055 | goto out_unregister_resolver_key; | |
45af7a0f | 1056 | |
45af7a0f SF |
1057 | return 0; |
1058 | ||
3bc303c2 | 1059 | out_unregister_resolver_key: |
6103335d SF |
1060 | #ifdef CONFIG_CIFS_DFS_UPCALL |
1061 | unregister_key_type(&key_type_dns_resolver); | |
84a15b93 | 1062 | out_unregister_key_type: |
6103335d | 1063 | #endif |
84a15b93 JL |
1064 | #ifdef CONFIG_CIFS_UPCALL |
1065 | unregister_key_type(&cifs_spnego_key_type); | |
45af7a0f | 1066 | out_unregister_filesystem: |
84a15b93 | 1067 | #endif |
45af7a0f SF |
1068 | unregister_filesystem(&cifs_fs_type); |
1069 | out_destroy_request_bufs: | |
1070 | cifs_destroy_request_bufs(); | |
1071 | out_destroy_mids: | |
1072 | cifs_destroy_mids(); | |
1073 | out_destroy_inodecache: | |
1074 | cifs_destroy_inodecache(); | |
1075 | out_clean_proc: | |
1da177e4 | 1076 | cifs_proc_clean(); |
1da177e4 LT |
1077 | return rc; |
1078 | } | |
1079 | ||
1080 | static void __exit | |
1081 | exit_cifs(void) | |
1082 | { | |
90c81e0b | 1083 | cFYI(DBG2, ("exit_cifs")); |
1da177e4 | 1084 | cifs_proc_clean(); |
6103335d | 1085 | #ifdef CONFIG_CIFS_DFS_UPCALL |
78d31a3a | 1086 | cifs_dfs_release_automount_timer(); |
6103335d SF |
1087 | unregister_key_type(&key_type_dns_resolver); |
1088 | #endif | |
84a15b93 JL |
1089 | #ifdef CONFIG_CIFS_UPCALL |
1090 | unregister_key_type(&cifs_spnego_key_type); | |
1da177e4 LT |
1091 | #endif |
1092 | unregister_filesystem(&cifs_fs_type); | |
1093 | cifs_destroy_inodecache(); | |
1094 | cifs_destroy_mids(); | |
1095 | cifs_destroy_request_bufs(); | |
1da177e4 LT |
1096 | } |
1097 | ||
1098 | MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>"); | |
6dc0f87e | 1099 | MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */ |
1da177e4 | 1100 | MODULE_DESCRIPTION |
63135e08 SF |
1101 | ("VFS to access servers complying with the SNIA CIFS Specification " |
1102 | "e.g. Samba and Windows"); | |
1da177e4 LT |
1103 | MODULE_VERSION(CIFS_VERSION); |
1104 | module_init(init_cifs) | |
1105 | module_exit(exit_cifs) |