]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsfs.c | |
3 | * | |
4 | * Copyright (C) International Business Machines Corp., 2002,2004 | |
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> |
1da177e4 LT |
36 | #include "cifsfs.h" |
37 | #include "cifspdu.h" | |
38 | #define DECLARE_GLOBALS_HERE | |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_debug.h" | |
42 | #include "cifs_fs_sb.h" | |
43 | #include <linux/mm.h> | |
44 | #define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ | |
45 | ||
46 | #ifdef CONFIG_CIFS_QUOTA | |
47 | static struct quotactl_ops cifs_quotactl_ops; | |
48 | #endif | |
49 | ||
50 | int cifsFYI = 0; | |
51 | int cifsERROR = 1; | |
52 | int traceSMB = 0; | |
53 | unsigned int oplockEnabled = 1; | |
54 | unsigned int experimEnabled = 0; | |
55 | unsigned int linuxExtEnabled = 1; | |
56 | unsigned int lookupCacheEnabled = 1; | |
57 | unsigned int multiuser_mount = 0; | |
58 | unsigned int extended_security = 0; | |
59 | unsigned int ntlmv2_support = 0; | |
60 | unsigned int sign_CIFS_PDUs = 1; | |
61 | extern struct task_struct * oplockThread; /* remove sparse warning */ | |
62 | struct task_struct * oplockThread = NULL; | |
8d0d5094 SF |
63 | extern struct task_struct * dnotifyThread; /* remove sparse warning */ |
64 | struct task_struct * dnotifyThread = NULL; | |
1da177e4 LT |
65 | unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE; |
66 | module_param(CIFSMaxBufSize, int, 0); | |
67 | MODULE_PARM_DESC(CIFSMaxBufSize,"Network buffer size (not including header). Default: 16384 Range: 8192 to 130048"); | |
68 | unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL; | |
69 | module_param(cifs_min_rcv, int, 0); | |
70 | MODULE_PARM_DESC(cifs_min_rcv,"Network buffers in pool. Default: 4 Range: 1 to 64"); | |
71 | unsigned int cifs_min_small = 30; | |
72 | module_param(cifs_min_small, int, 0); | |
73 | MODULE_PARM_DESC(cifs_min_small,"Small network buffers in pool. Default: 30 Range: 2 to 256"); | |
74 | unsigned int cifs_max_pending = CIFS_MAX_REQ; | |
75 | module_param(cifs_max_pending, int, 0); | |
76 | MODULE_PARM_DESC(cifs_max_pending,"Simultaneous requests to server. Default: 50 Range: 2 to 256"); | |
77 | ||
78 | static DECLARE_COMPLETION(cifs_oplock_exited); | |
8d0d5094 | 79 | static DECLARE_COMPLETION(cifs_dnotify_exited); |
1da177e4 LT |
80 | |
81 | extern mempool_t *cifs_sm_req_poolp; | |
82 | extern mempool_t *cifs_req_poolp; | |
83 | extern mempool_t *cifs_mid_poolp; | |
84 | ||
85 | extern kmem_cache_t *cifs_oplock_cachep; | |
86 | ||
87 | static int | |
88 | cifs_read_super(struct super_block *sb, void *data, | |
89 | const char *devname, int silent) | |
90 | { | |
91 | struct inode *inode; | |
92 | struct cifs_sb_info *cifs_sb; | |
93 | int rc = 0; | |
94 | ||
95 | sb->s_flags |= MS_NODIRATIME; /* and probably even noatime */ | |
96 | sb->s_fs_info = kmalloc(sizeof(struct cifs_sb_info),GFP_KERNEL); | |
97 | cifs_sb = CIFS_SB(sb); | |
98 | if(cifs_sb == NULL) | |
99 | return -ENOMEM; | |
100 | else | |
101 | memset(cifs_sb,0,sizeof(struct cifs_sb_info)); | |
102 | ||
103 | ||
104 | rc = cifs_mount(sb, cifs_sb, data, devname); | |
105 | ||
106 | if (rc) { | |
107 | if (!silent) | |
108 | cERROR(1, | |
109 | ("cifs_mount failed w/return code = %d", rc)); | |
110 | goto out_mount_failed; | |
111 | } | |
112 | ||
113 | sb->s_magic = CIFS_MAGIC_NUMBER; | |
114 | sb->s_op = &cifs_super_ops; | |
115 | /* if(cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512) | |
116 | sb->s_blocksize = cifs_sb->tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE; */ | |
117 | #ifdef CONFIG_CIFS_QUOTA | |
118 | sb->s_qcop = &cifs_quotactl_ops; | |
119 | #endif | |
120 | sb->s_blocksize = CIFS_MAX_MSGSIZE; | |
121 | sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */ | |
122 | inode = iget(sb, ROOT_I); | |
123 | ||
124 | if (!inode) { | |
125 | rc = -ENOMEM; | |
126 | goto out_no_root; | |
127 | } | |
128 | ||
129 | sb->s_root = d_alloc_root(inode); | |
130 | ||
131 | if (!sb->s_root) { | |
132 | rc = -ENOMEM; | |
133 | goto out_no_root; | |
134 | } | |
135 | ||
136 | return 0; | |
137 | ||
138 | out_no_root: | |
139 | cERROR(1, ("cifs_read_super: get root inode failed")); | |
140 | if (inode) | |
141 | iput(inode); | |
142 | ||
143 | out_mount_failed: | |
144 | if(cifs_sb) { | |
145 | if(cifs_sb->local_nls) | |
146 | unload_nls(cifs_sb->local_nls); | |
147 | kfree(cifs_sb); | |
148 | } | |
149 | return rc; | |
150 | } | |
151 | ||
152 | static void | |
153 | cifs_put_super(struct super_block *sb) | |
154 | { | |
155 | int rc = 0; | |
156 | struct cifs_sb_info *cifs_sb; | |
157 | ||
158 | cFYI(1, ("In cifs_put_super")); | |
159 | cifs_sb = CIFS_SB(sb); | |
160 | if(cifs_sb == NULL) { | |
161 | cFYI(1,("Empty cifs superblock info passed to unmount")); | |
162 | return; | |
163 | } | |
164 | rc = cifs_umount(sb, cifs_sb); | |
165 | if (rc) { | |
166 | cERROR(1, ("cifs_umount failed with return code %d", rc)); | |
167 | } | |
168 | unload_nls(cifs_sb->local_nls); | |
169 | kfree(cifs_sb); | |
170 | return; | |
171 | } | |
172 | ||
173 | static int | |
174 | cifs_statfs(struct super_block *sb, struct kstatfs *buf) | |
175 | { | |
c81156dd SF |
176 | int xid; |
177 | int rc = -EOPNOTSUPP; | |
1da177e4 LT |
178 | struct cifs_sb_info *cifs_sb; |
179 | struct cifsTconInfo *pTcon; | |
180 | ||
181 | xid = GetXid(); | |
182 | ||
183 | cifs_sb = CIFS_SB(sb); | |
184 | pTcon = cifs_sb->tcon; | |
185 | ||
186 | buf->f_type = CIFS_MAGIC_NUMBER; | |
187 | ||
188 | /* instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO */ | |
c81156dd SF |
189 | buf->f_namelen = PATH_MAX; /* PATH_MAX may be too long - it would |
190 | presumably be total path, but note | |
191 | that some servers (includinng Samba 3) | |
192 | have a shorter maximum path */ | |
1da177e4 LT |
193 | buf->f_files = 0; /* undefined */ |
194 | buf->f_ffree = 0; /* unlimited */ | |
195 | ||
196 | #ifdef CONFIG_CIFS_EXPERIMENTAL | |
197 | /* BB we could add a second check for a QFS Unix capability bit */ | |
f28ac91b | 198 | /* BB FIXME check CIFS_POSIX_EXTENSIONS Unix cap first FIXME BB */ |
c81156dd SF |
199 | if ((pTcon->ses->capabilities & CAP_UNIX) && (CIFS_POSIX_EXTENSIONS & |
200 | le64_to_cpu(pTcon->fsUnixInfo.Capability))) | |
737b758c | 201 | rc = CIFSSMBQFSPosixInfo(xid, pTcon, buf); |
1da177e4 LT |
202 | |
203 | /* Only need to call the old QFSInfo if failed | |
204 | on newer one */ | |
205 | if(rc) | |
206 | #endif /* CIFS_EXPERIMENTAL */ | |
737b758c | 207 | rc = CIFSSMBQFSInfo(xid, pTcon, buf); |
1da177e4 | 208 | |
20962438 SF |
209 | /* Old Windows servers do not support level 103, retry with level |
210 | one if old server failed the previous call */ | |
211 | if(rc) | |
212 | rc = SMBOldQFSInfo(xid, pTcon, buf); | |
1da177e4 LT |
213 | /* |
214 | int f_type; | |
215 | __fsid_t f_fsid; | |
216 | int f_namelen; */ | |
c81156dd | 217 | /* BB get from info in tcon struct at mount time call to QFSAttrInfo */ |
1da177e4 | 218 | FreeXid(xid); |
c81156dd SF |
219 | return 0; /* always return success? what if volume is no |
220 | longer available? */ | |
1da177e4 LT |
221 | } |
222 | ||
223 | static int cifs_permission(struct inode * inode, int mask, struct nameidata *nd) | |
224 | { | |
225 | struct cifs_sb_info *cifs_sb; | |
226 | ||
227 | cifs_sb = CIFS_SB(inode->i_sb); | |
228 | ||
229 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) { | |
230 | return 0; | |
231 | } else /* file mode might have been restricted at mount time | |
232 | on the client (above and beyond ACL on servers) for | |
233 | servers which do not support setting and viewing mode bits, | |
234 | so allowing client to check permissions is useful */ | |
235 | return generic_permission(inode, mask, NULL); | |
236 | } | |
237 | ||
238 | static kmem_cache_t *cifs_inode_cachep; | |
239 | static kmem_cache_t *cifs_req_cachep; | |
240 | static kmem_cache_t *cifs_mid_cachep; | |
241 | kmem_cache_t *cifs_oplock_cachep; | |
242 | static kmem_cache_t *cifs_sm_req_cachep; | |
243 | mempool_t *cifs_sm_req_poolp; | |
244 | mempool_t *cifs_req_poolp; | |
245 | mempool_t *cifs_mid_poolp; | |
246 | ||
247 | static struct inode * | |
248 | cifs_alloc_inode(struct super_block *sb) | |
249 | { | |
250 | struct cifsInodeInfo *cifs_inode; | |
251 | cifs_inode = kmem_cache_alloc(cifs_inode_cachep, SLAB_KERNEL); | |
252 | if (!cifs_inode) | |
253 | return NULL; | |
254 | cifs_inode->cifsAttrs = 0x20; /* default */ | |
255 | atomic_set(&cifs_inode->inUse, 0); | |
256 | cifs_inode->time = 0; | |
257 | /* Until the file is open and we have gotten oplock | |
258 | info back from the server, can not assume caching of | |
259 | file data or metadata */ | |
260 | cifs_inode->clientCanCacheRead = FALSE; | |
261 | cifs_inode->clientCanCacheAll = FALSE; | |
262 | cifs_inode->vfs_inode.i_blksize = CIFS_MAX_MSGSIZE; | |
263 | cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ | |
e30dcf3a | 264 | cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME; |
1da177e4 LT |
265 | INIT_LIST_HEAD(&cifs_inode->openFileList); |
266 | return &cifs_inode->vfs_inode; | |
267 | } | |
268 | ||
269 | static void | |
270 | cifs_destroy_inode(struct inode *inode) | |
271 | { | |
272 | kmem_cache_free(cifs_inode_cachep, CIFS_I(inode)); | |
273 | } | |
274 | ||
275 | /* | |
276 | * cifs_show_options() is for displaying mount options in /proc/mounts. | |
277 | * Not all settable options are displayed but most of the important | |
278 | * ones are. | |
279 | */ | |
280 | static int | |
281 | cifs_show_options(struct seq_file *s, struct vfsmount *m) | |
282 | { | |
283 | struct cifs_sb_info *cifs_sb; | |
284 | ||
285 | cifs_sb = CIFS_SB(m->mnt_sb); | |
286 | ||
287 | if (cifs_sb) { | |
288 | if (cifs_sb->tcon) { | |
289 | seq_printf(s, ",unc=%s", cifs_sb->tcon->treeName); | |
290 | if (cifs_sb->tcon->ses) { | |
291 | if (cifs_sb->tcon->ses->userName) | |
292 | seq_printf(s, ",username=%s", | |
293 | cifs_sb->tcon->ses->userName); | |
294 | if(cifs_sb->tcon->ses->domainName) | |
295 | seq_printf(s, ",domain=%s", | |
296 | cifs_sb->tcon->ses->domainName); | |
297 | } | |
298 | } | |
299 | seq_printf(s, ",rsize=%d",cifs_sb->rsize); | |
300 | seq_printf(s, ",wsize=%d",cifs_sb->wsize); | |
301 | } | |
302 | return 0; | |
303 | } | |
304 | ||
305 | #ifdef CONFIG_CIFS_QUOTA | |
306 | int cifs_xquota_set(struct super_block * sb, int quota_type, qid_t qid, | |
307 | struct fs_disk_quota * pdquota) | |
308 | { | |
309 | int xid; | |
310 | int rc = 0; | |
311 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
312 | struct cifsTconInfo *pTcon; | |
313 | ||
314 | if(cifs_sb) | |
315 | pTcon = cifs_sb->tcon; | |
316 | else | |
317 | return -EIO; | |
318 | ||
319 | ||
320 | xid = GetXid(); | |
321 | if(pTcon) { | |
322 | cFYI(1,("set type: 0x%x id: %d",quota_type,qid)); | |
323 | } else { | |
324 | return -EIO; | |
325 | } | |
326 | ||
327 | FreeXid(xid); | |
328 | return rc; | |
329 | } | |
330 | ||
331 | int cifs_xquota_get(struct super_block * sb, int quota_type, qid_t qid, | |
332 | struct fs_disk_quota * pdquota) | |
333 | { | |
334 | int xid; | |
335 | int rc = 0; | |
336 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
337 | struct cifsTconInfo *pTcon; | |
338 | ||
339 | if(cifs_sb) | |
340 | pTcon = cifs_sb->tcon; | |
341 | else | |
342 | return -EIO; | |
343 | ||
344 | xid = GetXid(); | |
345 | if(pTcon) { | |
346 | cFYI(1,("set type: 0x%x id: %d",quota_type,qid)); | |
347 | } else { | |
348 | rc = -EIO; | |
349 | } | |
350 | ||
351 | FreeXid(xid); | |
352 | return rc; | |
353 | } | |
354 | ||
355 | int cifs_xstate_set(struct super_block * sb, unsigned int flags, int operation) | |
356 | { | |
357 | int xid; | |
358 | int rc = 0; | |
359 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
360 | struct cifsTconInfo *pTcon; | |
361 | ||
362 | if(cifs_sb) | |
363 | pTcon = cifs_sb->tcon; | |
364 | else | |
365 | return -EIO; | |
366 | ||
367 | xid = GetXid(); | |
368 | if(pTcon) { | |
369 | cFYI(1,("flags: 0x%x operation: 0x%x",flags,operation)); | |
370 | } else { | |
371 | rc = -EIO; | |
372 | } | |
373 | ||
374 | FreeXid(xid); | |
375 | return rc; | |
376 | } | |
377 | ||
378 | int cifs_xstate_get(struct super_block * sb, struct fs_quota_stat *qstats) | |
379 | { | |
380 | int xid; | |
381 | int rc = 0; | |
382 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
383 | struct cifsTconInfo *pTcon; | |
384 | ||
385 | if(cifs_sb) { | |
386 | pTcon = cifs_sb->tcon; | |
387 | } else { | |
388 | return -EIO; | |
389 | } | |
390 | xid = GetXid(); | |
391 | if(pTcon) { | |
392 | cFYI(1,("pqstats %p",qstats)); | |
393 | } else { | |
394 | rc = -EIO; | |
395 | } | |
396 | ||
397 | FreeXid(xid); | |
398 | return rc; | |
399 | } | |
400 | ||
401 | static struct quotactl_ops cifs_quotactl_ops = { | |
402 | .set_xquota = cifs_xquota_set, | |
403 | .get_xquota = cifs_xquota_set, | |
404 | .set_xstate = cifs_xstate_set, | |
405 | .get_xstate = cifs_xstate_get, | |
406 | }; | |
407 | #endif | |
408 | ||
7b7abfe3 | 409 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
68058e75 SF |
410 | static void cifs_umount_begin(struct super_block * sblock) |
411 | { | |
5e1253b5 | 412 | struct cifs_sb_info *cifs_sb; |
9e2e85f8 | 413 | struct cifsTconInfo * tcon; |
68058e75 | 414 | |
34210f33 | 415 | cifs_sb = CIFS_SB(sblock); |
5e1253b5 | 416 | if(cifs_sb == NULL) |
9e2e85f8 SF |
417 | return; |
418 | ||
419 | tcon = cifs_sb->tcon; | |
420 | if(tcon == NULL) | |
421 | return; | |
5e1253b5 SF |
422 | down(&tcon->tconSem); |
423 | if (atomic_read(&tcon->useCount) == 1) | |
424 | tcon->tidStatus = CifsExiting; | |
425 | up(&tcon->tconSem); | |
426 | ||
7b7abfe3 SF |
427 | /* cancel_brl_requests(tcon); */ |
428 | /* cancel_notify_requests(tcon); */ | |
9e2e85f8 | 429 | if(tcon->ses && tcon->ses->server) |
5e1253b5 | 430 | { |
7b7abfe3 | 431 | cFYI(1,("wake up tasks now - umount begin not complete")); |
9e2e85f8 | 432 | wake_up_all(&tcon->ses->server->request_q); |
6ab16d24 SF |
433 | wake_up_all(&tcon->ses->server->response_q); |
434 | msleep(1); /* yield */ | |
435 | /* we have to kick the requests once more */ | |
436 | wake_up_all(&tcon->ses->server->response_q); | |
437 | msleep(1); | |
5e1253b5 SF |
438 | } |
439 | /* BB FIXME - finish add checks for tidStatus BB */ | |
68058e75 SF |
440 | |
441 | return; | |
442 | } | |
7b7abfe3 | 443 | #endif |
68058e75 | 444 | |
1da177e4 LT |
445 | static int cifs_remount(struct super_block *sb, int *flags, char *data) |
446 | { | |
447 | *flags |= MS_NODIRATIME; | |
448 | return 0; | |
449 | } | |
450 | ||
451 | struct super_operations cifs_super_ops = { | |
452 | .read_inode = cifs_read_inode, | |
453 | .put_super = cifs_put_super, | |
454 | .statfs = cifs_statfs, | |
455 | .alloc_inode = cifs_alloc_inode, | |
456 | .destroy_inode = cifs_destroy_inode, | |
457 | /* .drop_inode = generic_delete_inode, | |
458 | .delete_inode = cifs_delete_inode, *//* Do not need the above two functions | |
459 | unless later we add lazy close of inodes or unless the kernel forgets to call | |
460 | us with the same number of releases (closes) as opens */ | |
461 | .show_options = cifs_show_options, | |
7b7abfe3 SF |
462 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
463 | .umount_begin = cifs_umount_begin, | |
464 | #endif | |
1da177e4 LT |
465 | .remount_fs = cifs_remount, |
466 | }; | |
467 | ||
468 | static struct super_block * | |
469 | cifs_get_sb(struct file_system_type *fs_type, | |
470 | int flags, const char *dev_name, void *data) | |
471 | { | |
472 | int rc; | |
473 | struct super_block *sb = sget(fs_type, NULL, set_anon_super, NULL); | |
474 | ||
475 | cFYI(1, ("Devname: %s flags: %d ", dev_name, flags)); | |
476 | ||
477 | if (IS_ERR(sb)) | |
478 | return sb; | |
479 | ||
480 | sb->s_flags = flags; | |
481 | ||
482 | rc = cifs_read_super(sb, data, dev_name, flags & MS_VERBOSE ? 1 : 0); | |
483 | if (rc) { | |
484 | up_write(&sb->s_umount); | |
485 | deactivate_super(sb); | |
486 | return ERR_PTR(rc); | |
487 | } | |
488 | sb->s_flags |= MS_ACTIVE; | |
489 | return sb; | |
490 | } | |
491 | ||
87c89dd7 SF |
492 | static ssize_t cifs_file_writev(struct file *file, const struct iovec *iov, |
493 | unsigned long nr_segs, loff_t *ppos) | |
1da177e4 | 494 | { |
87c89dd7 SF |
495 | struct inode *inode = file->f_dentry->d_inode; |
496 | ssize_t written; | |
1da177e4 | 497 | |
87c89dd7 SF |
498 | written = generic_file_writev(file, iov, nr_segs, ppos); |
499 | if (!CIFS_I(inode)->clientCanCacheAll) | |
500 | filemap_fdatawrite(inode->i_mapping); | |
501 | return written; | |
1da177e4 LT |
502 | } |
503 | ||
87c89dd7 SF |
504 | static ssize_t cifs_file_aio_write(struct kiocb *iocb, const char __user *buf, |
505 | size_t count, loff_t pos) | |
1da177e4 | 506 | { |
87c89dd7 | 507 | struct inode *inode = iocb->ki_filp->f_dentry->d_inode; |
1da177e4 LT |
508 | ssize_t written; |
509 | ||
87c89dd7 SF |
510 | written = generic_file_aio_write(iocb, buf, count, pos); |
511 | if (!CIFS_I(inode)->clientCanCacheAll) | |
512 | filemap_fdatawrite(inode->i_mapping); | |
1da177e4 LT |
513 | return written; |
514 | } | |
515 | ||
1da177e4 LT |
516 | static struct file_system_type cifs_fs_type = { |
517 | .owner = THIS_MODULE, | |
518 | .name = "cifs", | |
519 | .get_sb = cifs_get_sb, | |
520 | .kill_sb = kill_anon_super, | |
521 | /* .fs_flags */ | |
522 | }; | |
523 | struct inode_operations cifs_dir_inode_ops = { | |
524 | .create = cifs_create, | |
525 | .lookup = cifs_lookup, | |
526 | .getattr = cifs_getattr, | |
527 | .unlink = cifs_unlink, | |
528 | .link = cifs_hardlink, | |
529 | .mkdir = cifs_mkdir, | |
530 | .rmdir = cifs_rmdir, | |
531 | .rename = cifs_rename, | |
532 | .permission = cifs_permission, | |
533 | /* revalidate:cifs_revalidate, */ | |
534 | .setattr = cifs_setattr, | |
535 | .symlink = cifs_symlink, | |
536 | .mknod = cifs_mknod, | |
537 | #ifdef CONFIG_CIFS_XATTR | |
538 | .setxattr = cifs_setxattr, | |
539 | .getxattr = cifs_getxattr, | |
540 | .listxattr = cifs_listxattr, | |
541 | .removexattr = cifs_removexattr, | |
542 | #endif | |
543 | }; | |
544 | ||
545 | struct inode_operations cifs_file_inode_ops = { | |
546 | /* revalidate:cifs_revalidate, */ | |
547 | .setattr = cifs_setattr, | |
548 | .getattr = cifs_getattr, /* do we need this anymore? */ | |
549 | .rename = cifs_rename, | |
550 | .permission = cifs_permission, | |
551 | #ifdef CONFIG_CIFS_XATTR | |
552 | .setxattr = cifs_setxattr, | |
553 | .getxattr = cifs_getxattr, | |
554 | .listxattr = cifs_listxattr, | |
555 | .removexattr = cifs_removexattr, | |
556 | #endif | |
557 | }; | |
558 | ||
559 | struct inode_operations cifs_symlink_inode_ops = { | |
560 | .readlink = generic_readlink, | |
561 | .follow_link = cifs_follow_link, | |
562 | .put_link = cifs_put_link, | |
563 | .permission = cifs_permission, | |
564 | /* BB add the following two eventually */ | |
565 | /* revalidate: cifs_revalidate, | |
566 | setattr: cifs_notify_change, *//* BB do we need notify change */ | |
567 | #ifdef CONFIG_CIFS_XATTR | |
568 | .setxattr = cifs_setxattr, | |
569 | .getxattr = cifs_getxattr, | |
570 | .listxattr = cifs_listxattr, | |
571 | .removexattr = cifs_removexattr, | |
572 | #endif | |
573 | }; | |
574 | ||
575 | struct file_operations cifs_file_ops = { | |
87c89dd7 SF |
576 | .read = do_sync_read, |
577 | .write = do_sync_write, | |
578 | .readv = generic_file_readv, | |
579 | .writev = cifs_file_writev, | |
580 | .aio_read = generic_file_aio_read, | |
581 | .aio_write = cifs_file_aio_write, | |
1da177e4 LT |
582 | .open = cifs_open, |
583 | .release = cifs_close, | |
584 | .lock = cifs_lock, | |
585 | .fsync = cifs_fsync, | |
586 | .flush = cifs_flush, | |
587 | .mmap = cifs_file_mmap, | |
588 | .sendfile = generic_file_sendfile, | |
c67593a0 SF |
589 | #ifdef CONFIG_CIFS_POSIX |
590 | .ioctl = cifs_ioctl, | |
591 | #endif /* CONFIG_CIFS_POSIX */ | |
592 | ||
1da177e4 | 593 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
1da177e4 LT |
594 | .dir_notify = cifs_dir_notify, |
595 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ | |
596 | }; | |
597 | ||
598 | struct file_operations cifs_file_direct_ops = { | |
599 | /* no mmap, no aio, no readv - | |
600 | BB reevaluate whether they can be done with directio, no cache */ | |
601 | .read = cifs_user_read, | |
602 | .write = cifs_user_write, | |
603 | .open = cifs_open, | |
604 | .release = cifs_close, | |
605 | .lock = cifs_lock, | |
606 | .fsync = cifs_fsync, | |
607 | .flush = cifs_flush, | |
608 | .sendfile = generic_file_sendfile, /* BB removeme BB */ | |
c67593a0 SF |
609 | #ifdef CONFIG_CIFS_POSIX |
610 | .ioctl = cifs_ioctl, | |
611 | #endif /* CONFIG_CIFS_POSIX */ | |
612 | ||
1da177e4 LT |
613 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
614 | .dir_notify = cifs_dir_notify, | |
615 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ | |
616 | }; | |
8b94bcb9 | 617 | struct file_operations cifs_file_nobrl_ops = { |
87c89dd7 SF |
618 | .read = do_sync_read, |
619 | .write = do_sync_write, | |
620 | .readv = generic_file_readv, | |
621 | .writev = cifs_file_writev, | |
622 | .aio_read = generic_file_aio_read, | |
623 | .aio_write = cifs_file_aio_write, | |
624 | .open = cifs_open, | |
625 | .release = cifs_close, | |
626 | .fsync = cifs_fsync, | |
627 | .flush = cifs_flush, | |
628 | .mmap = cifs_file_mmap, | |
629 | .sendfile = generic_file_sendfile, | |
8b94bcb9 | 630 | #ifdef CONFIG_CIFS_POSIX |
87c89dd7 | 631 | .ioctl = cifs_ioctl, |
8b94bcb9 SF |
632 | #endif /* CONFIG_CIFS_POSIX */ |
633 | ||
634 | #ifdef CONFIG_CIFS_EXPERIMENTAL | |
87c89dd7 | 635 | .dir_notify = cifs_dir_notify, |
8b94bcb9 SF |
636 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
637 | }; | |
638 | ||
639 | struct file_operations cifs_file_direct_nobrl_ops = { | |
87c89dd7 SF |
640 | /* no mmap, no aio, no readv - |
641 | BB reevaluate whether they can be done with directio, no cache */ | |
642 | .read = cifs_user_read, | |
643 | .write = cifs_user_write, | |
644 | .open = cifs_open, | |
645 | .release = cifs_close, | |
646 | .fsync = cifs_fsync, | |
647 | .flush = cifs_flush, | |
648 | .sendfile = generic_file_sendfile, /* BB removeme BB */ | |
8b94bcb9 | 649 | #ifdef CONFIG_CIFS_POSIX |
87c89dd7 | 650 | .ioctl = cifs_ioctl, |
8b94bcb9 SF |
651 | #endif /* CONFIG_CIFS_POSIX */ |
652 | ||
653 | #ifdef CONFIG_CIFS_EXPERIMENTAL | |
87c89dd7 | 654 | .dir_notify = cifs_dir_notify, |
8b94bcb9 SF |
655 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
656 | }; | |
1da177e4 LT |
657 | |
658 | struct file_operations cifs_dir_ops = { | |
659 | .readdir = cifs_readdir, | |
660 | .release = cifs_closedir, | |
661 | .read = generic_read_dir, | |
662 | #ifdef CONFIG_CIFS_EXPERIMENTAL | |
663 | .dir_notify = cifs_dir_notify, | |
664 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ | |
f28ac91b | 665 | .ioctl = cifs_ioctl, |
1da177e4 LT |
666 | }; |
667 | ||
668 | static void | |
669 | cifs_init_once(void *inode, kmem_cache_t * cachep, unsigned long flags) | |
670 | { | |
671 | struct cifsInodeInfo *cifsi = inode; | |
672 | ||
673 | if ((flags & (SLAB_CTOR_VERIFY | SLAB_CTOR_CONSTRUCTOR)) == | |
674 | SLAB_CTOR_CONSTRUCTOR) { | |
675 | inode_init_once(&cifsi->vfs_inode); | |
676 | INIT_LIST_HEAD(&cifsi->lockList); | |
677 | } | |
678 | } | |
679 | ||
680 | static int | |
681 | cifs_init_inodecache(void) | |
682 | { | |
683 | cifs_inode_cachep = kmem_cache_create("cifs_inode_cache", | |
684 | sizeof (struct cifsInodeInfo), | |
685 | 0, SLAB_RECLAIM_ACCOUNT, | |
686 | cifs_init_once, NULL); | |
687 | if (cifs_inode_cachep == NULL) | |
688 | return -ENOMEM; | |
689 | ||
690 | return 0; | |
691 | } | |
692 | ||
693 | static void | |
694 | cifs_destroy_inodecache(void) | |
695 | { | |
696 | if (kmem_cache_destroy(cifs_inode_cachep)) | |
697 | printk(KERN_WARNING "cifs_inode_cache: error freeing\n"); | |
698 | } | |
699 | ||
700 | static int | |
701 | cifs_init_request_bufs(void) | |
702 | { | |
703 | if(CIFSMaxBufSize < 8192) { | |
704 | /* Buffer size can not be smaller than 2 * PATH_MAX since maximum | |
705 | Unicode path name has to fit in any SMB/CIFS path based frames */ | |
706 | CIFSMaxBufSize = 8192; | |
707 | } else if (CIFSMaxBufSize > 1024*127) { | |
708 | CIFSMaxBufSize = 1024 * 127; | |
709 | } else { | |
710 | CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/ | |
711 | } | |
712 | /* cERROR(1,("CIFSMaxBufSize %d 0x%x",CIFSMaxBufSize,CIFSMaxBufSize)); */ | |
713 | cifs_req_cachep = kmem_cache_create("cifs_request", | |
714 | CIFSMaxBufSize + | |
715 | MAX_CIFS_HDR_SIZE, 0, | |
716 | SLAB_HWCACHE_ALIGN, NULL, NULL); | |
717 | if (cifs_req_cachep == NULL) | |
718 | return -ENOMEM; | |
719 | ||
720 | if(cifs_min_rcv < 1) | |
721 | cifs_min_rcv = 1; | |
722 | else if (cifs_min_rcv > 64) { | |
723 | cifs_min_rcv = 64; | |
724 | cERROR(1,("cifs_min_rcv set to maximum (64)")); | |
725 | } | |
726 | ||
727 | cifs_req_poolp = mempool_create(cifs_min_rcv, | |
728 | mempool_alloc_slab, | |
729 | mempool_free_slab, | |
730 | cifs_req_cachep); | |
731 | ||
732 | if(cifs_req_poolp == NULL) { | |
733 | kmem_cache_destroy(cifs_req_cachep); | |
734 | return -ENOMEM; | |
735 | } | |
736 | /* 256 (MAX_CIFS_HDR_SIZE bytes is enough for most SMB responses and | |
737 | almost all handle based requests (but not write response, nor is it | |
738 | sufficient for path based requests). A smaller size would have | |
739 | been more efficient (compacting multiple slab items on one 4k page) | |
740 | for the case in which debug was on, but this larger size allows | |
741 | more SMBs to use small buffer alloc and is still much more | |
742 | efficient to alloc 1 per page off the slab compared to 17K (5page) | |
743 | alloc of large cifs buffers even when page debugging is on */ | |
744 | cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq", | |
745 | MAX_CIFS_HDR_SIZE, 0, SLAB_HWCACHE_ALIGN, NULL, NULL); | |
746 | if (cifs_sm_req_cachep == NULL) { | |
747 | mempool_destroy(cifs_req_poolp); | |
748 | kmem_cache_destroy(cifs_req_cachep); | |
749 | return -ENOMEM; | |
750 | } | |
751 | ||
752 | if(cifs_min_small < 2) | |
753 | cifs_min_small = 2; | |
754 | else if (cifs_min_small > 256) { | |
755 | cifs_min_small = 256; | |
756 | cFYI(1,("cifs_min_small set to maximum (256)")); | |
757 | } | |
758 | ||
759 | cifs_sm_req_poolp = mempool_create(cifs_min_small, | |
760 | mempool_alloc_slab, | |
761 | mempool_free_slab, | |
762 | cifs_sm_req_cachep); | |
763 | ||
764 | if(cifs_sm_req_poolp == NULL) { | |
765 | mempool_destroy(cifs_req_poolp); | |
766 | kmem_cache_destroy(cifs_req_cachep); | |
767 | kmem_cache_destroy(cifs_sm_req_cachep); | |
768 | return -ENOMEM; | |
769 | } | |
770 | ||
771 | return 0; | |
772 | } | |
773 | ||
774 | static void | |
775 | cifs_destroy_request_bufs(void) | |
776 | { | |
777 | mempool_destroy(cifs_req_poolp); | |
778 | if (kmem_cache_destroy(cifs_req_cachep)) | |
779 | printk(KERN_WARNING | |
780 | "cifs_destroy_request_cache: error not all structures were freed\n"); | |
781 | mempool_destroy(cifs_sm_req_poolp); | |
782 | if (kmem_cache_destroy(cifs_sm_req_cachep)) | |
783 | printk(KERN_WARNING | |
784 | "cifs_destroy_request_cache: cifs_small_rq free error\n"); | |
785 | } | |
786 | ||
787 | static int | |
788 | cifs_init_mids(void) | |
789 | { | |
790 | cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids", | |
791 | sizeof (struct mid_q_entry), 0, | |
792 | SLAB_HWCACHE_ALIGN, NULL, NULL); | |
793 | if (cifs_mid_cachep == NULL) | |
794 | return -ENOMEM; | |
795 | ||
796 | cifs_mid_poolp = mempool_create(3 /* a reasonable min simultan opers */, | |
797 | mempool_alloc_slab, | |
798 | mempool_free_slab, | |
799 | cifs_mid_cachep); | |
800 | if(cifs_mid_poolp == NULL) { | |
801 | kmem_cache_destroy(cifs_mid_cachep); | |
802 | return -ENOMEM; | |
803 | } | |
804 | ||
805 | cifs_oplock_cachep = kmem_cache_create("cifs_oplock_structs", | |
806 | sizeof (struct oplock_q_entry), 0, | |
807 | SLAB_HWCACHE_ALIGN, NULL, NULL); | |
808 | if (cifs_oplock_cachep == NULL) { | |
809 | kmem_cache_destroy(cifs_mid_cachep); | |
810 | mempool_destroy(cifs_mid_poolp); | |
811 | return -ENOMEM; | |
812 | } | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
817 | static void | |
818 | cifs_destroy_mids(void) | |
819 | { | |
820 | mempool_destroy(cifs_mid_poolp); | |
821 | if (kmem_cache_destroy(cifs_mid_cachep)) | |
822 | printk(KERN_WARNING | |
823 | "cifs_destroy_mids: error not all structures were freed\n"); | |
824 | ||
825 | if (kmem_cache_destroy(cifs_oplock_cachep)) | |
826 | printk(KERN_WARNING | |
827 | "error not all oplock structures were freed\n"); | |
828 | } | |
829 | ||
830 | static int cifs_oplock_thread(void * dummyarg) | |
831 | { | |
832 | struct oplock_q_entry * oplock_item; | |
833 | struct cifsTconInfo *pTcon; | |
834 | struct inode * inode; | |
835 | __u16 netfid; | |
836 | int rc; | |
837 | ||
838 | daemonize("cifsoplockd"); | |
839 | allow_signal(SIGTERM); | |
840 | ||
841 | oplockThread = current; | |
842 | do { | |
ede1327e SF |
843 | if (try_to_freeze()) |
844 | continue; | |
1da177e4 | 845 | |
1da177e4 LT |
846 | spin_lock(&GlobalMid_Lock); |
847 | if(list_empty(&GlobalOplock_Q)) { | |
848 | spin_unlock(&GlobalMid_Lock); | |
849 | set_current_state(TASK_INTERRUPTIBLE); | |
850 | schedule_timeout(39*HZ); | |
851 | } else { | |
852 | oplock_item = list_entry(GlobalOplock_Q.next, | |
853 | struct oplock_q_entry, qhead); | |
854 | if(oplock_item) { | |
855 | cFYI(1,("found oplock item to write out")); | |
856 | pTcon = oplock_item->tcon; | |
857 | inode = oplock_item->pinode; | |
858 | netfid = oplock_item->netfid; | |
859 | spin_unlock(&GlobalMid_Lock); | |
860 | DeleteOplockQEntry(oplock_item); | |
861 | /* can not grab inode sem here since it would | |
862 | deadlock when oplock received on delete | |
1b1dcc1b | 863 | since vfs_unlink holds the i_mutex across |
1da177e4 | 864 | the call */ |
1b1dcc1b | 865 | /* mutex_lock(&inode->i_mutex);*/ |
1da177e4 LT |
866 | if (S_ISREG(inode->i_mode)) { |
867 | rc = filemap_fdatawrite(inode->i_mapping); | |
868 | if(CIFS_I(inode)->clientCanCacheRead == 0) { | |
869 | filemap_fdatawait(inode->i_mapping); | |
870 | invalidate_remote_inode(inode); | |
871 | } | |
872 | } else | |
873 | rc = 0; | |
1b1dcc1b | 874 | /* mutex_unlock(&inode->i_mutex);*/ |
1da177e4 LT |
875 | if (rc) |
876 | CIFS_I(inode)->write_behind_rc = rc; | |
877 | cFYI(1,("Oplock flush inode %p rc %d",inode,rc)); | |
878 | ||
879 | /* releasing a stale oplock after recent reconnection | |
880 | of smb session using a now incorrect file | |
881 | handle is not a data integrity issue but do | |
882 | not bother sending an oplock release if session | |
883 | to server still is disconnected since oplock | |
884 | already released by the server in that case */ | |
885 | if(pTcon->tidStatus != CifsNeedReconnect) { | |
886 | rc = CIFSSMBLock(0, pTcon, netfid, | |
887 | 0 /* len */ , 0 /* offset */, 0, | |
888 | 0, LOCKING_ANDX_OPLOCK_RELEASE, | |
889 | 0 /* wait flag */); | |
890 | cFYI(1,("Oplock release rc = %d ",rc)); | |
891 | } | |
892 | } else | |
893 | spin_unlock(&GlobalMid_Lock); | |
68058e75 SF |
894 | set_current_state(TASK_INTERRUPTIBLE); |
895 | schedule_timeout(1); /* yield in case q were corrupt */ | |
1da177e4 LT |
896 | } |
897 | } while(!signal_pending(current)); | |
57337e42 | 898 | oplockThread = NULL; |
f191401f | 899 | complete_and_exit (&cifs_oplock_exited, 0); |
1da177e4 LT |
900 | } |
901 | ||
8d0d5094 SF |
902 | static int cifs_dnotify_thread(void * dummyarg) |
903 | { | |
6ab16d24 SF |
904 | struct list_head *tmp; |
905 | struct cifsSesInfo *ses; | |
906 | ||
8d0d5094 SF |
907 | daemonize("cifsdnotifyd"); |
908 | allow_signal(SIGTERM); | |
909 | ||
910 | dnotifyThread = current; | |
911 | do { | |
16abbecd SF |
912 | if(try_to_freeze()) |
913 | continue; | |
8d0d5094 | 914 | set_current_state(TASK_INTERRUPTIBLE); |
6ab16d24 SF |
915 | schedule_timeout(15*HZ); |
916 | read_lock(&GlobalSMBSeslock); | |
917 | /* check if any stuck requests that need | |
918 | to be woken up and wakeq so the | |
919 | thread can wake up and error out */ | |
920 | list_for_each(tmp, &GlobalSMBSessionList) { | |
921 | ses = list_entry(tmp, struct cifsSesInfo, | |
922 | cifsSessionList); | |
923 | if(ses && ses->server && | |
2a138ebb | 924 | atomic_read(&ses->server->inFlight)) |
6ab16d24 SF |
925 | wake_up_all(&ses->server->response_q); |
926 | } | |
927 | read_unlock(&GlobalSMBSeslock); | |
8d0d5094 SF |
928 | } while(!signal_pending(current)); |
929 | complete_and_exit (&cifs_dnotify_exited, 0); | |
1da177e4 LT |
930 | } |
931 | ||
932 | static int __init | |
933 | init_cifs(void) | |
934 | { | |
935 | int rc = 0; | |
936 | #ifdef CONFIG_PROC_FS | |
937 | cifs_proc_init(); | |
938 | #endif | |
939 | INIT_LIST_HEAD(&GlobalServerList); /* BB not implemented yet */ | |
940 | INIT_LIST_HEAD(&GlobalSMBSessionList); | |
941 | INIT_LIST_HEAD(&GlobalTreeConnectionList); | |
942 | INIT_LIST_HEAD(&GlobalOplock_Q); | |
4ca9c190 SF |
943 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
944 | INIT_LIST_HEAD(&GlobalDnotifyReqList); | |
945 | INIT_LIST_HEAD(&GlobalDnotifyRsp_Q); | |
946 | #endif | |
1da177e4 LT |
947 | /* |
948 | * Initialize Global counters | |
949 | */ | |
950 | atomic_set(&sesInfoAllocCount, 0); | |
951 | atomic_set(&tconInfoAllocCount, 0); | |
952 | atomic_set(&tcpSesAllocCount,0); | |
953 | atomic_set(&tcpSesReconnectCount, 0); | |
954 | atomic_set(&tconInfoReconnectCount, 0); | |
955 | ||
956 | atomic_set(&bufAllocCount, 0); | |
957 | atomic_set(&midCount, 0); | |
958 | GlobalCurrentXid = 0; | |
959 | GlobalTotalActiveXid = 0; | |
960 | GlobalMaxActiveXid = 0; | |
961 | rwlock_init(&GlobalSMBSeslock); | |
962 | spin_lock_init(&GlobalMid_Lock); | |
963 | ||
964 | if(cifs_max_pending < 2) { | |
965 | cifs_max_pending = 2; | |
966 | cFYI(1,("cifs_max_pending set to min of 2")); | |
967 | } else if(cifs_max_pending > 256) { | |
968 | cifs_max_pending = 256; | |
969 | cFYI(1,("cifs_max_pending set to max of 256")); | |
970 | } | |
971 | ||
972 | rc = cifs_init_inodecache(); | |
973 | if (!rc) { | |
974 | rc = cifs_init_mids(); | |
975 | if (!rc) { | |
976 | rc = cifs_init_request_bufs(); | |
977 | if (!rc) { | |
978 | rc = register_filesystem(&cifs_fs_type); | |
979 | if (!rc) { | |
980 | rc = (int)kernel_thread(cifs_oplock_thread, NULL, | |
981 | CLONE_FS | CLONE_FILES | CLONE_VM); | |
8d0d5094 SF |
982 | if(rc > 0) { |
983 | rc = (int)kernel_thread(cifs_dnotify_thread, NULL, | |
984 | CLONE_FS | CLONE_FILES | CLONE_VM); | |
985 | if(rc > 0) | |
986 | return 0; | |
987 | else | |
988 | cERROR(1,("error %d create dnotify thread", rc)); | |
989 | } else { | |
1da177e4 | 990 | cERROR(1,("error %d create oplock thread",rc)); |
8d0d5094 | 991 | } |
1da177e4 LT |
992 | } |
993 | cifs_destroy_request_bufs(); | |
994 | } | |
995 | cifs_destroy_mids(); | |
996 | } | |
997 | cifs_destroy_inodecache(); | |
998 | } | |
999 | #ifdef CONFIG_PROC_FS | |
1000 | cifs_proc_clean(); | |
1001 | #endif | |
1002 | return rc; | |
1003 | } | |
1004 | ||
1005 | static void __exit | |
1006 | exit_cifs(void) | |
1007 | { | |
1008 | cFYI(0, ("In unregister ie exit_cifs")); | |
1009 | #ifdef CONFIG_PROC_FS | |
1010 | cifs_proc_clean(); | |
1011 | #endif | |
1012 | unregister_filesystem(&cifs_fs_type); | |
1013 | cifs_destroy_inodecache(); | |
1014 | cifs_destroy_mids(); | |
1015 | cifs_destroy_request_bufs(); | |
1016 | if(oplockThread) { | |
1017 | send_sig(SIGTERM, oplockThread, 1); | |
1018 | wait_for_completion(&cifs_oplock_exited); | |
1019 | } | |
8d0d5094 SF |
1020 | if(dnotifyThread) { |
1021 | send_sig(SIGTERM, dnotifyThread, 1); | |
1022 | wait_for_completion(&cifs_dnotify_exited); | |
1023 | } | |
1da177e4 LT |
1024 | } |
1025 | ||
1026 | MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>"); | |
1027 | MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */ | |
1028 | MODULE_DESCRIPTION | |
1029 | ("VFS to access servers complying with the SNIA CIFS Specification e.g. Samba and Windows"); | |
1030 | MODULE_VERSION(CIFS_VERSION); | |
1031 | module_init(init_cifs) | |
1032 | module_exit(exit_cifs) |