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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsfs.c | |
3 | * | |
2b280fab | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Common Internet FileSystem (CIFS) client | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* Note that BB means BUGBUG (ie something to fix eventually) */ | |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/fs.h> | |
28 | #include <linux/mount.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/list.h> | |
32 | #include <linux/seq_file.h> | |
33 | #include <linux/vfs.h> | |
34 | #include <linux/mempool.h> | |
6ab16d24 | 35 | #include <linux/delay.h> |
45af7a0f | 36 | #include <linux/kthread.h> |
7dfb7103 | 37 | #include <linux/freezer.h> |
fec11dd9 | 38 | #include <linux/namei.h> |
b8c32dbb | 39 | #include <linux/random.h> |
c6e970a0 | 40 | #include <linux/uuid.h> |
a9ae008f | 41 | #include <linux/xattr.h> |
3eb9a889 | 42 | #include <net/ipv6.h> |
1da177e4 LT |
43 | #include "cifsfs.h" |
44 | #include "cifspdu.h" | |
45 | #define DECLARE_GLOBALS_HERE | |
46 | #include "cifsglob.h" | |
47 | #include "cifsproto.h" | |
48 | #include "cifs_debug.h" | |
49 | #include "cifs_fs_sb.h" | |
50 | #include <linux/mm.h> | |
84a15b93 | 51 | #include <linux/key-type.h> |
e545937a | 52 | #include "cifs_spnego.h" |
f579cf3c | 53 | #include "fscache.h" |
3792c173 | 54 | #include "smb2pdu.h" |
1da177e4 | 55 | |
1da177e4 | 56 | int cifsFYI = 0; |
1404297e | 57 | bool traceSMB; |
e7504734 | 58 | bool enable_oplocks = true; |
1404297e KC |
59 | bool linuxExtEnabled = true; |
60 | bool lookupCacheEnabled = true; | |
04912d6a | 61 | unsigned int global_secflags = CIFSSEC_DEF; |
3979877e | 62 | /* unsigned int ntlmv2_support = 0; */ |
1da177e4 | 63 | unsigned int sign_CIFS_PDUs = 1; |
ee9b6d61 | 64 | static const struct super_operations cifs_super_ops; |
1da177e4 | 65 | unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE; |
cb978ac8 | 66 | module_param(CIFSMaxBufSize, uint, 0444); |
63135e08 SF |
67 | MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header). " |
68 | "Default: 16384 Range: 8192 to 130048"); | |
1da177e4 | 69 | unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL; |
cb978ac8 | 70 | module_param(cifs_min_rcv, uint, 0444); |
63135e08 SF |
71 | MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: " |
72 | "1 to 64"); | |
1da177e4 | 73 | unsigned int cifs_min_small = 30; |
cb978ac8 | 74 | module_param(cifs_min_small, uint, 0444); |
63135e08 SF |
75 | MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 " |
76 | "Range: 2 to 256"); | |
1da177e4 | 77 | unsigned int cifs_max_pending = CIFS_MAX_REQ; |
60654ce0 | 78 | module_param(cifs_max_pending, uint, 0444); |
63135e08 | 79 | MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. " |
10b9b98e | 80 | "Default: 32767 Range: 2 to 32767."); |
e7504734 | 81 | module_param(enable_oplocks, bool, 0644); |
60654ce0 | 82 | MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks. Default: y/Y/1"); |
e7504734 | 83 | |
1da177e4 LT |
84 | extern mempool_t *cifs_sm_req_poolp; |
85 | extern mempool_t *cifs_req_poolp; | |
86 | extern mempool_t *cifs_mid_poolp; | |
87 | ||
da472fc8 | 88 | struct workqueue_struct *cifsiod_wq; |
3998e6b8 | 89 | struct workqueue_struct *cifsoplockd_wq; |
3d22462a | 90 | __u32 cifs_lock_secret; |
da472fc8 | 91 | |
24261fc2 MG |
92 | /* |
93 | * Bumps refcount for cifs super block. | |
94 | * Note that it should be only called if a referece to VFS super block is | |
95 | * already held, e.g. in open-type syscalls context. Otherwise it can race with | |
96 | * atomic_dec_and_test in deactivate_locked_super. | |
97 | */ | |
98 | void | |
99 | cifs_sb_active(struct super_block *sb) | |
100 | { | |
101 | struct cifs_sb_info *server = CIFS_SB(sb); | |
102 | ||
103 | if (atomic_inc_return(&server->active) == 1) | |
104 | atomic_inc(&sb->s_active); | |
105 | } | |
106 | ||
107 | void | |
108 | cifs_sb_deactive(struct super_block *sb) | |
109 | { | |
110 | struct cifs_sb_info *server = CIFS_SB(sb); | |
111 | ||
112 | if (atomic_dec_and_test(&server->active)) | |
113 | deactivate_super(sb); | |
114 | } | |
115 | ||
1da177e4 | 116 | static int |
97d1152a | 117 | cifs_read_super(struct super_block *sb) |
1da177e4 LT |
118 | { |
119 | struct inode *inode; | |
b2e5cd33 | 120 | struct cifs_sb_info *cifs_sb; |
2f6c9479 | 121 | struct cifs_tcon *tcon; |
1da177e4 | 122 | int rc = 0; |
50c2f753 | 123 | |
b2e5cd33 | 124 | cifs_sb = CIFS_SB(sb); |
2f6c9479 | 125 | tcon = cifs_sb_master_tcon(cifs_sb); |
1da177e4 | 126 | |
2c6292ae | 127 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL) |
1751e8a6 | 128 | sb->s_flags |= SB_POSIXACL; |
2c6292ae | 129 | |
2f6c9479 | 130 | if (tcon->ses->capabilities & tcon->ses->server->vals->cap_large_files) |
2c6292ae AV |
131 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
132 | else | |
133 | sb->s_maxbytes = MAX_NON_LFS; | |
134 | ||
135 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ | |
136 | sb->s_time_gran = 100; | |
137 | ||
1da177e4 LT |
138 | sb->s_magic = CIFS_MAGIC_NUMBER; |
139 | sb->s_op = &cifs_super_ops; | |
a9ae008f | 140 | sb->s_xattr = cifs_xattr_handlers; |
851ea086 JK |
141 | rc = super_setup_bdi(sb); |
142 | if (rc) | |
143 | goto out_no_root; | |
144 | /* tune readahead according to rsize */ | |
145 | sb->s_bdi->ra_pages = cifs_sb->rsize / PAGE_SIZE; | |
146 | ||
1da177e4 LT |
147 | sb->s_blocksize = CIFS_MAX_MSGSIZE; |
148 | sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */ | |
9b6763e0 | 149 | inode = cifs_root_iget(sb); |
1da177e4 | 150 | |
ce634ab2 DH |
151 | if (IS_ERR(inode)) { |
152 | rc = PTR_ERR(inode); | |
1da177e4 LT |
153 | goto out_no_root; |
154 | } | |
155 | ||
2f6c9479 | 156 | if (tcon->nocase) |
66ffd113 JL |
157 | sb->s_d_op = &cifs_ci_dentry_ops; |
158 | else | |
159 | sb->s_d_op = &cifs_dentry_ops; | |
160 | ||
48fde701 | 161 | sb->s_root = d_make_root(inode); |
1da177e4 LT |
162 | if (!sb->s_root) { |
163 | rc = -ENOMEM; | |
164 | goto out_no_root; | |
165 | } | |
50c2f753 | 166 | |
f3a6a60e | 167 | #ifdef CONFIG_CIFS_NFSD_EXPORT |
7521a3c5 | 168 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
f96637be | 169 | cifs_dbg(FYI, "export ops supported\n"); |
7521a3c5 SF |
170 | sb->s_export_op = &cifs_export_ops; |
171 | } | |
f3a6a60e | 172 | #endif /* CONFIG_CIFS_NFSD_EXPORT */ |
1da177e4 LT |
173 | |
174 | return 0; | |
175 | ||
176 | out_no_root: | |
f96637be | 177 | cifs_dbg(VFS, "%s: get root inode failed\n", __func__); |
1da177e4 LT |
178 | return rc; |
179 | } | |
180 | ||
6d686175 AV |
181 | static void cifs_kill_sb(struct super_block *sb) |
182 | { | |
183 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
184 | kill_anon_super(sb); | |
98ab494d | 185 | cifs_umount(cifs_sb); |
1da177e4 LT |
186 | } |
187 | ||
188 | static int | |
726c3342 | 189 | cifs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 190 | { |
726c3342 | 191 | struct super_block *sb = dentry->d_sb; |
39da9847 | 192 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
96daf2b0 | 193 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
76ec5e33 | 194 | struct TCP_Server_Info *server = tcon->ses->server; |
6d5786a3 | 195 | unsigned int xid; |
76ec5e33 | 196 | int rc = 0; |
1da177e4 | 197 | |
6d5786a3 | 198 | xid = get_xid(); |
1da177e4 | 199 | |
39da9847 SF |
200 | /* |
201 | * PATH_MAX may be too long - it would presumably be total path, | |
202 | * but note that some servers (includinng Samba 3) have a shorter | |
203 | * maximum path. | |
204 | * | |
205 | * Instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO. | |
206 | */ | |
207 | buf->f_namelen = PATH_MAX; | |
1da177e4 LT |
208 | buf->f_files = 0; /* undefined */ |
209 | buf->f_ffree = 0; /* unlimited */ | |
210 | ||
76ec5e33 PS |
211 | if (server->ops->queryfs) |
212 | rc = server->ops->queryfs(xid, tcon, buf); | |
39da9847 | 213 | |
6d5786a3 | 214 | free_xid(xid); |
39da9847 | 215 | return 0; |
1da177e4 LT |
216 | } |
217 | ||
31742c5a SF |
218 | static long cifs_fallocate(struct file *file, int mode, loff_t off, loff_t len) |
219 | { | |
7119e220 | 220 | struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file); |
31742c5a SF |
221 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
222 | struct TCP_Server_Info *server = tcon->ses->server; | |
223 | ||
224 | if (server->ops->fallocate) | |
225 | return server->ops->fallocate(file, tcon, mode, off, len); | |
226 | ||
227 | return -EOPNOTSUPP; | |
228 | } | |
229 | ||
10556cb2 | 230 | static int cifs_permission(struct inode *inode, int mask) |
1da177e4 LT |
231 | { |
232 | struct cifs_sb_info *cifs_sb; | |
233 | ||
234 | cifs_sb = CIFS_SB(inode->i_sb); | |
235 | ||
f696a365 MS |
236 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) { |
237 | if ((mask & MAY_EXEC) && !execute_ok(inode)) | |
238 | return -EACCES; | |
239 | else | |
240 | return 0; | |
241 | } else /* file mode might have been restricted at mount time | |
50c2f753 | 242 | on the client (above and beyond ACL on servers) for |
1da177e4 | 243 | servers which do not support setting and viewing mode bits, |
50c2f753 | 244 | so allowing client to check permissions is useful */ |
2830ba7f | 245 | return generic_permission(inode, mask); |
1da177e4 LT |
246 | } |
247 | ||
e18b890b CL |
248 | static struct kmem_cache *cifs_inode_cachep; |
249 | static struct kmem_cache *cifs_req_cachep; | |
250 | static struct kmem_cache *cifs_mid_cachep; | |
e18b890b | 251 | static struct kmem_cache *cifs_sm_req_cachep; |
1da177e4 LT |
252 | mempool_t *cifs_sm_req_poolp; |
253 | mempool_t *cifs_req_poolp; | |
254 | mempool_t *cifs_mid_poolp; | |
255 | ||
256 | static struct inode * | |
257 | cifs_alloc_inode(struct super_block *sb) | |
258 | { | |
259 | struct cifsInodeInfo *cifs_inode; | |
e94b1766 | 260 | cifs_inode = kmem_cache_alloc(cifs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
261 | if (!cifs_inode) |
262 | return NULL; | |
263 | cifs_inode->cifsAttrs = 0x20; /* default */ | |
1da177e4 | 264 | cifs_inode->time = 0; |
b8c32dbb PS |
265 | /* |
266 | * Until the file is open and we have gotten oplock info back from the | |
267 | * server, can not assume caching of file data or metadata. | |
268 | */ | |
c6723628 | 269 | cifs_set_oplock_level(cifs_inode, 0); |
aff8d5ca | 270 | cifs_inode->flags = 0; |
c11f1df5 SP |
271 | spin_lock_init(&cifs_inode->writers_lock); |
272 | cifs_inode->writers = 0; | |
1da177e4 | 273 | cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ |
fbec9ab9 | 274 | cifs_inode->server_eof = 0; |
20054bd6 JL |
275 | cifs_inode->uniqueid = 0; |
276 | cifs_inode->createtime = 0; | |
42873b0a | 277 | cifs_inode->epoch = 0; |
fa70b87c | 278 | generate_random_uuid(cifs_inode->lease_key); |
2a38e120 | 279 | |
b8c32dbb PS |
280 | /* |
281 | * Can not set i_flags here - they get immediately overwritten to zero | |
282 | * by the VFS. | |
283 | */ | |
284 | /* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME; */ | |
1da177e4 | 285 | INIT_LIST_HEAD(&cifs_inode->openFileList); |
f45d3416 | 286 | INIT_LIST_HEAD(&cifs_inode->llist); |
1da177e4 LT |
287 | return &cifs_inode->vfs_inode; |
288 | } | |
289 | ||
fa0d7e3d NP |
290 | static void cifs_i_callback(struct rcu_head *head) |
291 | { | |
292 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
fa0d7e3d NP |
293 | kmem_cache_free(cifs_inode_cachep, CIFS_I(inode)); |
294 | } | |
295 | ||
1da177e4 LT |
296 | static void |
297 | cifs_destroy_inode(struct inode *inode) | |
298 | { | |
fa0d7e3d | 299 | call_rcu(&inode->i_rcu, cifs_i_callback); |
1da177e4 LT |
300 | } |
301 | ||
9451a9a5 | 302 | static void |
b57922d9 | 303 | cifs_evict_inode(struct inode *inode) |
9451a9a5 | 304 | { |
91b0abe3 | 305 | truncate_inode_pages_final(&inode->i_data); |
dbd5768f | 306 | clear_inode(inode); |
9451a9a5 SJ |
307 | cifs_fscache_release_inode_cookie(inode); |
308 | } | |
309 | ||
61f98ffd JL |
310 | static void |
311 | cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server) | |
312 | { | |
a9f1b85e PS |
313 | struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr; |
314 | struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr; | |
315 | ||
571d5972 | 316 | seq_puts(s, ",addr="); |
61f98ffd | 317 | |
a9f1b85e | 318 | switch (server->dstaddr.ss_family) { |
61f98ffd | 319 | case AF_INET: |
a9f1b85e | 320 | seq_printf(s, "%pI4", &sa->sin_addr.s_addr); |
61f98ffd JL |
321 | break; |
322 | case AF_INET6: | |
a9f1b85e PS |
323 | seq_printf(s, "%pI6", &sa6->sin6_addr.s6_addr); |
324 | if (sa6->sin6_scope_id) | |
325 | seq_printf(s, "%%%u", sa6->sin6_scope_id); | |
61f98ffd JL |
326 | break; |
327 | default: | |
571d5972 | 328 | seq_puts(s, "(unknown)"); |
61f98ffd JL |
329 | } |
330 | } | |
331 | ||
3e715513 | 332 | static void |
28e11bd8 | 333 | cifs_show_security(struct seq_file *s, struct cifs_ses *ses) |
3e715513 | 334 | { |
eda2116f SF |
335 | if (ses->sectype == Unspecified) { |
336 | if (ses->user_name == NULL) | |
337 | seq_puts(s, ",sec=none"); | |
28e11bd8 | 338 | return; |
eda2116f | 339 | } |
28e11bd8 | 340 | |
571d5972 | 341 | seq_puts(s, ",sec="); |
3e715513 | 342 | |
28e11bd8 | 343 | switch (ses->sectype) { |
3e715513 | 344 | case LANMAN: |
571d5972 | 345 | seq_puts(s, "lanman"); |
3e715513 JL |
346 | break; |
347 | case NTLMv2: | |
571d5972 | 348 | seq_puts(s, "ntlmv2"); |
3e715513 JL |
349 | break; |
350 | case NTLM: | |
571d5972 | 351 | seq_puts(s, "ntlm"); |
3e715513 JL |
352 | break; |
353 | case Kerberos: | |
571d5972 | 354 | seq_puts(s, "krb5"); |
3e715513 JL |
355 | break; |
356 | case RawNTLMSSP: | |
571d5972 | 357 | seq_puts(s, "ntlmssp"); |
3e715513 JL |
358 | break; |
359 | default: | |
360 | /* shouldn't ever happen */ | |
571d5972 | 361 | seq_puts(s, "unknown"); |
3e715513 JL |
362 | break; |
363 | } | |
364 | ||
28e11bd8 | 365 | if (ses->sign) |
571d5972 | 366 | seq_puts(s, "i"); |
3e715513 JL |
367 | } |
368 | ||
d06b5056 JL |
369 | static void |
370 | cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb) | |
371 | { | |
571d5972 | 372 | seq_puts(s, ",cache="); |
d06b5056 JL |
373 | |
374 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) | |
571d5972 | 375 | seq_puts(s, "strict"); |
d06b5056 | 376 | else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) |
571d5972 | 377 | seq_puts(s, "none"); |
d06b5056 | 378 | else |
571d5972 | 379 | seq_puts(s, "loose"); |
d06b5056 JL |
380 | } |
381 | ||
3ae35cde JL |
382 | static void |
383 | cifs_show_nls(struct seq_file *s, struct nls_table *cur) | |
384 | { | |
385 | struct nls_table *def; | |
386 | ||
387 | /* Display iocharset= option if it's not default charset */ | |
388 | def = load_nls_default(); | |
389 | if (def != cur) | |
390 | seq_printf(s, ",iocharset=%s", cur->charset); | |
391 | unload_nls(def); | |
392 | } | |
393 | ||
1da177e4 LT |
394 | /* |
395 | * cifs_show_options() is for displaying mount options in /proc/mounts. | |
396 | * Not all settable options are displayed but most of the important | |
397 | * ones are. | |
398 | */ | |
399 | static int | |
34c80b1d | 400 | cifs_show_options(struct seq_file *s, struct dentry *root) |
1da177e4 | 401 | { |
34c80b1d | 402 | struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb); |
96daf2b0 | 403 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
3eb9a889 BG |
404 | struct sockaddr *srcaddr; |
405 | srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr; | |
8616e0fc | 406 | |
a068acf2 | 407 | seq_show_option(s, "vers", tcon->ses->server->vals->version_string); |
28e11bd8 | 408 | cifs_show_security(s, tcon->ses); |
d06b5056 | 409 | cifs_show_cache_flavor(s, cifs_sb); |
3e715513 | 410 | |
29e07c82 | 411 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) |
571d5972 | 412 | seq_puts(s, ",multiuser"); |
8727c8a8 | 413 | else if (tcon->ses->user_name) |
a068acf2 | 414 | seq_show_option(s, "username", tcon->ses->user_name); |
29e07c82 | 415 | |
8616e0fc | 416 | if (tcon->ses->domainName) |
a068acf2 | 417 | seq_show_option(s, "domain", tcon->ses->domainName); |
8616e0fc | 418 | |
3eb9a889 BG |
419 | if (srcaddr->sa_family != AF_UNSPEC) { |
420 | struct sockaddr_in *saddr4; | |
421 | struct sockaddr_in6 *saddr6; | |
422 | saddr4 = (struct sockaddr_in *)srcaddr; | |
423 | saddr6 = (struct sockaddr_in6 *)srcaddr; | |
424 | if (srcaddr->sa_family == AF_INET6) | |
425 | seq_printf(s, ",srcaddr=%pI6c", | |
426 | &saddr6->sin6_addr); | |
427 | else if (srcaddr->sa_family == AF_INET) | |
428 | seq_printf(s, ",srcaddr=%pI4", | |
429 | &saddr4->sin_addr.s_addr); | |
430 | else | |
431 | seq_printf(s, ",srcaddr=BAD-AF:%i", | |
432 | (int)(srcaddr->sa_family)); | |
433 | } | |
434 | ||
1f68233c EB |
435 | seq_printf(s, ",uid=%u", |
436 | from_kuid_munged(&init_user_ns, cifs_sb->mnt_uid)); | |
340481a3 | 437 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
571d5972 | 438 | seq_puts(s, ",forceuid"); |
4486d6ed | 439 | else |
571d5972 | 440 | seq_puts(s, ",noforceuid"); |
340481a3 | 441 | |
1f68233c EB |
442 | seq_printf(s, ",gid=%u", |
443 | from_kgid_munged(&init_user_ns, cifs_sb->mnt_gid)); | |
340481a3 | 444 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
571d5972 | 445 | seq_puts(s, ",forcegid"); |
4486d6ed | 446 | else |
571d5972 | 447 | seq_puts(s, ",noforcegid"); |
8616e0fc | 448 | |
61f98ffd | 449 | cifs_show_address(s, tcon->ses->server); |
1da177e4 | 450 | |
8616e0fc | 451 | if (!tcon->unix_ext) |
5206efd6 | 452 | seq_printf(s, ",file_mode=0%ho,dir_mode=0%ho", |
2b280fab SF |
453 | cifs_sb->mnt_file_mode, |
454 | cifs_sb->mnt_dir_mode); | |
3ae35cde JL |
455 | |
456 | cifs_show_nls(s, cifs_sb->local_nls); | |
457 | ||
8616e0fc | 458 | if (tcon->seal) |
571d5972 | 459 | seq_puts(s, ",seal"); |
8616e0fc | 460 | if (tcon->nocase) |
571d5972 | 461 | seq_puts(s, ",nocase"); |
8616e0fc | 462 | if (tcon->retry) |
571d5972 | 463 | seq_puts(s, ",hard"); |
6e82e929 RS |
464 | else |
465 | seq_puts(s, ",soft"); | |
f16dfa7c SF |
466 | if (tcon->use_persistent) |
467 | seq_puts(s, ",persistenthandles"); | |
592fafe6 SF |
468 | else if (tcon->use_resilient) |
469 | seq_puts(s, ",resilienthandles"); | |
d4ffff1f | 470 | if (tcon->unix_ext) |
571d5972 | 471 | seq_puts(s, ",unix"); |
d4ffff1f | 472 | else |
571d5972 | 473 | seq_puts(s, ",nounix"); |
8616e0fc | 474 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) |
571d5972 | 475 | seq_puts(s, ",posixpaths"); |
8616e0fc | 476 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) |
571d5972 | 477 | seq_puts(s, ",setuids"); |
95932655 SF |
478 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL) |
479 | seq_puts(s, ",idsfromsid"); | |
8616e0fc | 480 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) |
571d5972 | 481 | seq_puts(s, ",serverino"); |
d4ffff1f | 482 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD) |
571d5972 | 483 | seq_puts(s, ",rwpidforward"); |
d4ffff1f | 484 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) |
571d5972 | 485 | seq_puts(s, ",forcemand"); |
8616e0fc | 486 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
571d5972 | 487 | seq_puts(s, ",nouser_xattr"); |
8616e0fc | 488 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR) |
571d5972 | 489 | seq_puts(s, ",mapchars"); |
bc8ebdc4 NA |
490 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR) |
491 | seq_puts(s, ",mapposix"); | |
8616e0fc | 492 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) |
571d5972 | 493 | seq_puts(s, ",sfu"); |
8616e0fc | 494 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
571d5972 | 495 | seq_puts(s, ",nobrl"); |
8616e0fc | 496 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) |
571d5972 | 497 | seq_puts(s, ",cifsacl"); |
8616e0fc | 498 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) |
571d5972 | 499 | seq_puts(s, ",dynperm"); |
1751e8a6 | 500 | if (root->d_sb->s_flags & SB_POSIXACL) |
571d5972 | 501 | seq_puts(s, ",acl"); |
736a3320 | 502 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) |
571d5972 | 503 | seq_puts(s, ",mfsymlinks"); |
476428f8 | 504 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE) |
571d5972 | 505 | seq_puts(s, ",fsc"); |
71c424ba | 506 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC) |
571d5972 | 507 | seq_puts(s, ",nostrictsync"); |
71c424ba | 508 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
571d5972 | 509 | seq_puts(s, ",noperm"); |
3c7c87fd | 510 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID) |
1f68233c EB |
511 | seq_printf(s, ",backupuid=%u", |
512 | from_kuid_munged(&init_user_ns, | |
513 | cifs_sb->mnt_backupuid)); | |
3c7c87fd | 514 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) |
1f68233c EB |
515 | seq_printf(s, ",backupgid=%u", |
516 | from_kgid_munged(&init_user_ns, | |
517 | cifs_sb->mnt_backupgid)); | |
8616e0fc | 518 | |
28f88810 SP |
519 | seq_printf(s, ",rsize=%u", cifs_sb->rsize); |
520 | seq_printf(s, ",wsize=%u", cifs_sb->wsize); | |
adfeb3e0 SF |
521 | seq_printf(s, ",echo_interval=%lu", |
522 | tcon->ses->server->echo_interval / HZ); | |
6d20e840 | 523 | /* convert actimeo and display it in seconds */ |
156d1790 | 524 | seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ); |
8616e0fc | 525 | |
1da177e4 LT |
526 | return 0; |
527 | } | |
528 | ||
42faad99 | 529 | static void cifs_umount_begin(struct super_block *sb) |
68058e75 | 530 | { |
42faad99 | 531 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
96daf2b0 | 532 | struct cifs_tcon *tcon; |
68058e75 | 533 | |
4523cc30 | 534 | if (cifs_sb == NULL) |
9e2e85f8 SF |
535 | return; |
536 | ||
0d424ad0 | 537 | tcon = cifs_sb_master_tcon(cifs_sb); |
f1987b44 | 538 | |
3f9bcca7 | 539 | spin_lock(&cifs_tcp_ses_lock); |
ad8034f1 SF |
540 | if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) { |
541 | /* we have other mounts to same share or we have | |
542 | already tried to force umount this and woken up | |
543 | all waiting network requests, nothing to do */ | |
3f9bcca7 | 544 | spin_unlock(&cifs_tcp_ses_lock); |
ad8034f1 SF |
545 | return; |
546 | } else if (tcon->tc_count == 1) | |
5e1253b5 | 547 | tcon->tidStatus = CifsExiting; |
3f9bcca7 | 548 | spin_unlock(&cifs_tcp_ses_lock); |
5e1253b5 | 549 | |
3a5ff61c | 550 | /* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */ |
7b7abfe3 | 551 | /* cancel_notify_requests(tcon); */ |
50c2f753 | 552 | if (tcon->ses && tcon->ses->server) { |
f96637be | 553 | cifs_dbg(FYI, "wake up tasks now - umount begin not complete\n"); |
9e2e85f8 | 554 | wake_up_all(&tcon->ses->server->request_q); |
6ab16d24 SF |
555 | wake_up_all(&tcon->ses->server->response_q); |
556 | msleep(1); /* yield */ | |
557 | /* we have to kick the requests once more */ | |
558 | wake_up_all(&tcon->ses->server->response_q); | |
559 | msleep(1); | |
5e1253b5 | 560 | } |
68058e75 SF |
561 | |
562 | return; | |
563 | } | |
68058e75 | 564 | |
bf97d287 | 565 | #ifdef CONFIG_CIFS_STATS2 |
64132379 | 566 | static int cifs_show_stats(struct seq_file *s, struct dentry *root) |
bf97d287 SF |
567 | { |
568 | /* BB FIXME */ | |
569 | return 0; | |
570 | } | |
571 | #endif | |
572 | ||
1da177e4 LT |
573 | static int cifs_remount(struct super_block *sb, int *flags, char *data) |
574 | { | |
02b9984d | 575 | sync_filesystem(sb); |
1751e8a6 | 576 | *flags |= SB_NODIRATIME; |
1da177e4 LT |
577 | return 0; |
578 | } | |
579 | ||
45321ac5 | 580 | static int cifs_drop_inode(struct inode *inode) |
12420ac3 JL |
581 | { |
582 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
583 | ||
45321ac5 AV |
584 | /* no serverino => unconditional eviction */ |
585 | return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) || | |
586 | generic_drop_inode(inode); | |
12420ac3 JL |
587 | } |
588 | ||
ee9b6d61 | 589 | static const struct super_operations cifs_super_ops = { |
1da177e4 LT |
590 | .statfs = cifs_statfs, |
591 | .alloc_inode = cifs_alloc_inode, | |
592 | .destroy_inode = cifs_destroy_inode, | |
12420ac3 | 593 | .drop_inode = cifs_drop_inode, |
b57922d9 | 594 | .evict_inode = cifs_evict_inode, |
12420ac3 JL |
595 | /* .delete_inode = cifs_delete_inode, */ /* Do not need above |
596 | function unless later we add lazy close of inodes or unless the | |
50c2f753 SF |
597 | kernel forgets to call us with the same number of releases (closes) |
598 | as opens */ | |
1da177e4 | 599 | .show_options = cifs_show_options, |
7b7abfe3 | 600 | .umount_begin = cifs_umount_begin, |
1da177e4 | 601 | .remount_fs = cifs_remount, |
bf97d287 | 602 | #ifdef CONFIG_CIFS_STATS2 |
f46d3e11 | 603 | .show_stats = cifs_show_stats, |
bf97d287 | 604 | #endif |
1da177e4 LT |
605 | }; |
606 | ||
f87d39d9 SF |
607 | /* |
608 | * Get root dentry from superblock according to prefix path mount option. | |
609 | * Return dentry with refcount + 1 on success and NULL otherwise. | |
610 | */ | |
611 | static struct dentry * | |
612 | cifs_get_root(struct smb_vol *vol, struct super_block *sb) | |
613 | { | |
fec11dd9 | 614 | struct dentry *dentry; |
f87d39d9 | 615 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
fec11dd9 AV |
616 | char *full_path = NULL; |
617 | char *s, *p; | |
f87d39d9 SF |
618 | char sep; |
619 | ||
348c1bfa SP |
620 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) |
621 | return dget(sb->s_root); | |
622 | ||
6d3ea7e4 | 623 | full_path = cifs_build_path_to_root(vol, cifs_sb, |
374402a2 | 624 | cifs_sb_master_tcon(cifs_sb), 0); |
f87d39d9 | 625 | if (full_path == NULL) |
9403c9c5 | 626 | return ERR_PTR(-ENOMEM); |
f87d39d9 | 627 | |
f96637be | 628 | cifs_dbg(FYI, "Get root dentry for %s\n", full_path); |
f87d39d9 | 629 | |
f87d39d9 | 630 | sep = CIFS_DIR_SEP(cifs_sb); |
fec11dd9 AV |
631 | dentry = dget(sb->s_root); |
632 | p = s = full_path; | |
633 | ||
634 | do { | |
2b0143b5 | 635 | struct inode *dir = d_inode(dentry); |
fec11dd9 AV |
636 | struct dentry *child; |
637 | ||
5b980b01 PS |
638 | if (!dir) { |
639 | dput(dentry); | |
640 | dentry = ERR_PTR(-ENOENT); | |
641 | break; | |
642 | } | |
ce2ac521 JL |
643 | if (!S_ISDIR(dir->i_mode)) { |
644 | dput(dentry); | |
645 | dentry = ERR_PTR(-ENOTDIR); | |
646 | break; | |
647 | } | |
5b980b01 | 648 | |
fec11dd9 AV |
649 | /* skip separators */ |
650 | while (*s == sep) | |
651 | s++; | |
652 | if (!*s) | |
653 | break; | |
654 | p = s++; | |
655 | /* next separator */ | |
656 | while (*s && *s != sep) | |
657 | s++; | |
658 | ||
85f40482 | 659 | child = lookup_one_len_unlocked(p, dentry, s - p); |
fec11dd9 AV |
660 | dput(dentry); |
661 | dentry = child; | |
662 | } while (!IS_ERR(dentry)); | |
f87d39d9 | 663 | kfree(full_path); |
fec11dd9 | 664 | return dentry; |
f87d39d9 SF |
665 | } |
666 | ||
ee01a14d AV |
667 | static int cifs_set_super(struct super_block *sb, void *data) |
668 | { | |
669 | struct cifs_mnt_data *mnt_data = data; | |
670 | sb->s_fs_info = mnt_data->cifs_sb; | |
671 | return set_anon_super(sb, NULL); | |
672 | } | |
673 | ||
d753ed97 AV |
674 | static struct dentry * |
675 | cifs_do_mount(struct file_system_type *fs_type, | |
724d9f1c | 676 | int flags, const char *dev_name, void *data) |
1da177e4 LT |
677 | { |
678 | int rc; | |
db719222 | 679 | struct super_block *sb; |
724d9f1c PS |
680 | struct cifs_sb_info *cifs_sb; |
681 | struct smb_vol *volume_info; | |
25c7f41e | 682 | struct cifs_mnt_data mnt_data; |
724d9f1c | 683 | struct dentry *root; |
1da177e4 | 684 | |
f96637be | 685 | cifs_dbg(FYI, "Devname: %s flags: %d\n", dev_name, flags); |
1da177e4 | 686 | |
04db79b0 JL |
687 | volume_info = cifs_get_volume_info((char *)data, dev_name); |
688 | if (IS_ERR(volume_info)) | |
689 | return ERR_CAST(volume_info); | |
724d9f1c PS |
690 | |
691 | cifs_sb = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL); | |
692 | if (cifs_sb == NULL) { | |
693 | root = ERR_PTR(-ENOMEM); | |
5c4f1ad7 | 694 | goto out_nls; |
724d9f1c PS |
695 | } |
696 | ||
5d3bc605 AV |
697 | cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL); |
698 | if (cifs_sb->mountdata == NULL) { | |
699 | root = ERR_PTR(-ENOMEM); | |
4214ebf4 | 700 | goto out_free; |
5d3bc605 AV |
701 | } |
702 | ||
4214ebf4 SP |
703 | rc = cifs_setup_cifs_sb(volume_info, cifs_sb); |
704 | if (rc) { | |
705 | root = ERR_PTR(rc); | |
706 | goto out_free; | |
a6b5058f AA |
707 | } |
708 | ||
97d1152a AV |
709 | rc = cifs_mount(cifs_sb, volume_info); |
710 | if (rc) { | |
1751e8a6 | 711 | if (!(flags & SB_SILENT)) |
f96637be JP |
712 | cifs_dbg(VFS, "cifs_mount failed w/return code = %d\n", |
713 | rc); | |
97d1152a | 714 | root = ERR_PTR(rc); |
4214ebf4 | 715 | goto out_free; |
97d1152a AV |
716 | } |
717 | ||
25c7f41e PS |
718 | mnt_data.vol = volume_info; |
719 | mnt_data.cifs_sb = cifs_sb; | |
720 | mnt_data.flags = flags; | |
721 | ||
9249e17f | 722 | /* BB should we make this contingent on mount parm? */ |
1751e8a6 | 723 | flags |= SB_NODIRATIME | SB_NOATIME; |
9249e17f DH |
724 | |
725 | sb = sget(fs_type, cifs_match_super, cifs_set_super, flags, &mnt_data); | |
724d9f1c | 726 | if (IS_ERR(sb)) { |
724d9f1c | 727 | root = ERR_CAST(sb); |
97d1152a | 728 | cifs_umount(cifs_sb); |
d757d71b | 729 | goto out; |
724d9f1c | 730 | } |
1da177e4 | 731 | |
ee01a14d | 732 | if (sb->s_root) { |
f96637be | 733 | cifs_dbg(FYI, "Use existing superblock\n"); |
97d1152a | 734 | cifs_umount(cifs_sb); |
5c4f1ad7 | 735 | } else { |
5c4f1ad7 AV |
736 | rc = cifs_read_super(sb); |
737 | if (rc) { | |
738 | root = ERR_PTR(rc); | |
739 | goto out_super; | |
740 | } | |
b2e5cd33 | 741 | |
1751e8a6 | 742 | sb->s_flags |= SB_ACTIVE; |
1da177e4 | 743 | } |
724d9f1c | 744 | |
348c1bfa | 745 | root = cifs_get_root(volume_info, sb); |
9403c9c5 | 746 | if (IS_ERR(root)) |
f87d39d9 | 747 | goto out_super; |
25c7f41e | 748 | |
f96637be | 749 | cifs_dbg(FYI, "dentry root is: %p\n", root); |
641a58d6 | 750 | goto out; |
724d9f1c | 751 | |
641a58d6 | 752 | out_super: |
641a58d6 | 753 | deactivate_locked_super(sb); |
641a58d6 | 754 | out: |
f9e59bcb | 755 | cifs_cleanup_volume_info(volume_info); |
724d9f1c | 756 | return root; |
5c4f1ad7 | 757 | |
4214ebf4 SP |
758 | out_free: |
759 | kfree(cifs_sb->prepath); | |
5c4f1ad7 | 760 | kfree(cifs_sb->mountdata); |
5c4f1ad7 AV |
761 | kfree(cifs_sb); |
762 | out_nls: | |
763 | unload_nls(volume_info->local_nls); | |
764 | goto out; | |
1da177e4 LT |
765 | } |
766 | ||
08bc0353 JL |
767 | static ssize_t |
768 | cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter) | |
769 | { | |
770 | ssize_t rc; | |
771 | struct inode *inode = file_inode(iocb->ki_filp); | |
772 | ||
882137c4 RL |
773 | if (iocb->ki_filp->f_flags & O_DIRECT) |
774 | return cifs_user_readv(iocb, iter); | |
775 | ||
08bc0353 JL |
776 | rc = cifs_revalidate_mapping(inode); |
777 | if (rc) | |
778 | return rc; | |
779 | ||
780 | return generic_file_read_iter(iocb, iter); | |
781 | } | |
782 | ||
3dae8750 | 783 | static ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
1da177e4 | 784 | { |
496ad9aa | 785 | struct inode *inode = file_inode(iocb->ki_filp); |
c11f1df5 | 786 | struct cifsInodeInfo *cinode = CIFS_I(inode); |
1da177e4 | 787 | ssize_t written; |
72432ffc | 788 | int rc; |
1da177e4 | 789 | |
882137c4 RL |
790 | if (iocb->ki_filp->f_flags & O_DIRECT) { |
791 | written = cifs_user_writev(iocb, from); | |
792 | if (written > 0 && CIFS_CACHE_READ(cinode)) { | |
793 | cifs_zap_mapping(inode); | |
794 | cifs_dbg(FYI, | |
795 | "Set no oplock for inode=%p after a write operation\n", | |
796 | inode); | |
797 | cinode->oplock = 0; | |
798 | } | |
799 | return written; | |
800 | } | |
801 | ||
c11f1df5 SP |
802 | written = cifs_get_writer(cinode); |
803 | if (written) | |
804 | return written; | |
805 | ||
3dae8750 | 806 | written = generic_file_write_iter(iocb, from); |
72432ffc | 807 | |
18cceb6a | 808 | if (CIFS_CACHE_WRITE(CIFS_I(inode))) |
c11f1df5 | 809 | goto out; |
72432ffc PS |
810 | |
811 | rc = filemap_fdatawrite(inode->i_mapping); | |
812 | if (rc) | |
3dae8750 | 813 | cifs_dbg(FYI, "cifs_file_write_iter: %d rc on %p inode\n", |
f96637be | 814 | rc, inode); |
72432ffc | 815 | |
c11f1df5 SP |
816 | out: |
817 | cifs_put_writer(cinode); | |
1da177e4 LT |
818 | return written; |
819 | } | |
820 | ||
965c8e59 | 821 | static loff_t cifs_llseek(struct file *file, loff_t offset, int whence) |
c32a0b68 | 822 | { |
06222e49 | 823 | /* |
965c8e59 | 824 | * whence == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate |
06222e49 JB |
825 | * the cached file length |
826 | */ | |
965c8e59 | 827 | if (whence != SEEK_SET && whence != SEEK_CUR) { |
6feb9891 | 828 | int rc; |
496ad9aa | 829 | struct inode *inode = file_inode(file); |
6feb9891 PS |
830 | |
831 | /* | |
832 | * We need to be sure that all dirty pages are written and the | |
833 | * server has the newest file length. | |
834 | */ | |
18cceb6a | 835 | if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping && |
6feb9891 PS |
836 | inode->i_mapping->nrpages != 0) { |
837 | rc = filemap_fdatawait(inode->i_mapping); | |
156ecb2d SF |
838 | if (rc) { |
839 | mapping_set_error(inode->i_mapping, rc); | |
840 | return rc; | |
841 | } | |
6feb9891 PS |
842 | } |
843 | /* | |
844 | * Some applications poll for the file length in this strange | |
845 | * way so we must seek to end on non-oplocked files by | |
846 | * setting the revalidate time to zero. | |
847 | */ | |
848 | CIFS_I(inode)->time = 0; | |
849 | ||
850 | rc = cifs_revalidate_file_attr(file); | |
851 | if (rc < 0) | |
852 | return (loff_t)rc; | |
c32a0b68 | 853 | } |
965c8e59 | 854 | return generic_file_llseek(file, offset, whence); |
c32a0b68 SF |
855 | } |
856 | ||
e6f5c789 JL |
857 | static int |
858 | cifs_setlease(struct file *file, long arg, struct file_lock **lease, void **priv) | |
84210e91 | 859 | { |
18cceb6a PS |
860 | /* |
861 | * Note that this is called by vfs setlease with i_lock held to | |
862 | * protect *lease from going away. | |
863 | */ | |
496ad9aa | 864 | struct inode *inode = file_inode(file); |
ba00ba64 | 865 | struct cifsFileInfo *cfile = file->private_data; |
84210e91 SF |
866 | |
867 | if (!(S_ISREG(inode->i_mode))) | |
868 | return -EINVAL; | |
869 | ||
02440806 JL |
870 | /* Check if file is oplocked if this is request for new lease */ |
871 | if (arg == F_UNLCK || | |
872 | ((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) || | |
18cceb6a | 873 | ((arg == F_WRLCK) && CIFS_CACHE_WRITE(CIFS_I(inode)))) |
e6f5c789 | 874 | return generic_setlease(file, arg, lease, priv); |
13cfb733 | 875 | else if (tlink_tcon(cfile->tlink)->local_lease && |
18cceb6a PS |
876 | !CIFS_CACHE_READ(CIFS_I(inode))) |
877 | /* | |
878 | * If the server claims to support oplock on this file, then we | |
879 | * still need to check oplock even if the local_lease mount | |
880 | * option is set, but there are servers which do not support | |
881 | * oplock for which this mount option may be useful if the user | |
882 | * knows that the file won't be changed on the server by anyone | |
883 | * else. | |
884 | */ | |
e6f5c789 | 885 | return generic_setlease(file, arg, lease, priv); |
51ee4b84 | 886 | else |
84210e91 SF |
887 | return -EAGAIN; |
888 | } | |
84210e91 | 889 | |
e6ab1582 | 890 | struct file_system_type cifs_fs_type = { |
1da177e4 LT |
891 | .owner = THIS_MODULE, |
892 | .name = "cifs", | |
d753ed97 | 893 | .mount = cifs_do_mount, |
6d686175 | 894 | .kill_sb = cifs_kill_sb, |
1da177e4 LT |
895 | /* .fs_flags */ |
896 | }; | |
3e64fe5b | 897 | MODULE_ALIAS_FS("cifs"); |
754661f1 | 898 | const struct inode_operations cifs_dir_inode_ops = { |
1da177e4 | 899 | .create = cifs_create, |
d2c12719 | 900 | .atomic_open = cifs_atomic_open, |
1da177e4 LT |
901 | .lookup = cifs_lookup, |
902 | .getattr = cifs_getattr, | |
903 | .unlink = cifs_unlink, | |
904 | .link = cifs_hardlink, | |
905 | .mkdir = cifs_mkdir, | |
906 | .rmdir = cifs_rmdir, | |
2773bf00 | 907 | .rename = cifs_rename2, |
1da177e4 | 908 | .permission = cifs_permission, |
1da177e4 LT |
909 | .setattr = cifs_setattr, |
910 | .symlink = cifs_symlink, | |
911 | .mknod = cifs_mknod, | |
1da177e4 | 912 | .listxattr = cifs_listxattr, |
1da177e4 LT |
913 | }; |
914 | ||
754661f1 | 915 | const struct inode_operations cifs_file_inode_ops = { |
1da177e4 | 916 | .setattr = cifs_setattr, |
48a77aa7 | 917 | .getattr = cifs_getattr, |
1da177e4 | 918 | .permission = cifs_permission, |
1da177e4 | 919 | .listxattr = cifs_listxattr, |
1da177e4 LT |
920 | }; |
921 | ||
754661f1 | 922 | const struct inode_operations cifs_symlink_inode_ops = { |
6b255391 | 923 | .get_link = cifs_get_link, |
1da177e4 | 924 | .permission = cifs_permission, |
1da177e4 | 925 | .listxattr = cifs_listxattr, |
1da177e4 LT |
926 | }; |
927 | ||
04b38d60 CH |
928 | static int cifs_clone_file_range(struct file *src_file, loff_t off, |
929 | struct file *dst_file, loff_t destoff, u64 len) | |
930 | { | |
931 | struct inode *src_inode = file_inode(src_file); | |
932 | struct inode *target_inode = file_inode(dst_file); | |
933 | struct cifsFileInfo *smb_file_src = src_file->private_data; | |
934 | struct cifsFileInfo *smb_file_target = dst_file->private_data; | |
04b38d60 CH |
935 | struct cifs_tcon *target_tcon = tlink_tcon(smb_file_target->tlink); |
936 | unsigned int xid; | |
937 | int rc; | |
938 | ||
939 | cifs_dbg(FYI, "clone range\n"); | |
940 | ||
941 | xid = get_xid(); | |
942 | ||
943 | if (!src_file->private_data || !dst_file->private_data) { | |
944 | rc = -EBADF; | |
945 | cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n"); | |
946 | goto out; | |
947 | } | |
948 | ||
949 | /* | |
950 | * Note: cifs case is easier than btrfs since server responsible for | |
951 | * checks for proper open modes and file type and if it wants | |
952 | * server could even support copy of range where source = target | |
953 | */ | |
954 | lock_two_nondirectories(target_inode, src_inode); | |
955 | ||
956 | if (len == 0) | |
957 | len = src_inode->i_size - off; | |
958 | ||
959 | cifs_dbg(FYI, "about to flush pages\n"); | |
960 | /* should we flush first and last page first */ | |
961 | truncate_inode_pages_range(&target_inode->i_data, destoff, | |
09cbfeaf | 962 | PAGE_ALIGN(destoff + len)-1); |
04b38d60 CH |
963 | |
964 | if (target_tcon->ses->server->ops->duplicate_extents) | |
965 | rc = target_tcon->ses->server->ops->duplicate_extents(xid, | |
966 | smb_file_src, smb_file_target, off, len, destoff); | |
967 | else | |
968 | rc = -EOPNOTSUPP; | |
969 | ||
970 | /* force revalidate of size and timestamps of target file now | |
971 | that target is updated on the server */ | |
972 | CIFS_I(target_inode)->time = 0; | |
04b38d60 CH |
973 | /* although unlocking in the reverse order from locking is not |
974 | strictly necessary here it is a little cleaner to be consistent */ | |
975 | unlock_two_nondirectories(src_inode, target_inode); | |
976 | out: | |
977 | free_xid(xid); | |
978 | return rc; | |
979 | } | |
980 | ||
620d8745 SP |
981 | ssize_t cifs_file_copychunk_range(unsigned int xid, |
982 | struct file *src_file, loff_t off, | |
983 | struct file *dst_file, loff_t destoff, | |
984 | size_t len, unsigned int flags) | |
985 | { | |
986 | struct inode *src_inode = file_inode(src_file); | |
987 | struct inode *target_inode = file_inode(dst_file); | |
988 | struct cifsFileInfo *smb_file_src; | |
989 | struct cifsFileInfo *smb_file_target; | |
990 | struct cifs_tcon *src_tcon; | |
991 | struct cifs_tcon *target_tcon; | |
992 | ssize_t rc; | |
993 | ||
994 | cifs_dbg(FYI, "copychunk range\n"); | |
995 | ||
996 | if (src_inode == target_inode) { | |
997 | rc = -EINVAL; | |
998 | goto out; | |
999 | } | |
1000 | ||
1001 | if (!src_file->private_data || !dst_file->private_data) { | |
1002 | rc = -EBADF; | |
1003 | cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n"); | |
1004 | goto out; | |
1005 | } | |
1006 | ||
1007 | rc = -EXDEV; | |
1008 | smb_file_target = dst_file->private_data; | |
1009 | smb_file_src = src_file->private_data; | |
1010 | src_tcon = tlink_tcon(smb_file_src->tlink); | |
1011 | target_tcon = tlink_tcon(smb_file_target->tlink); | |
1012 | ||
1013 | if (src_tcon->ses != target_tcon->ses) { | |
1014 | cifs_dbg(VFS, "source and target of copy not on same server\n"); | |
1015 | goto out; | |
1016 | } | |
1017 | ||
1018 | /* | |
1019 | * Note: cifs case is easier than btrfs since server responsible for | |
1020 | * checks for proper open modes and file type and if it wants | |
1021 | * server could even support copy of range where source = target | |
1022 | */ | |
1023 | lock_two_nondirectories(target_inode, src_inode); | |
1024 | ||
1025 | cifs_dbg(FYI, "about to flush pages\n"); | |
1026 | /* should we flush first and last page first */ | |
1027 | truncate_inode_pages(&target_inode->i_data, 0); | |
1028 | ||
1029 | if (target_tcon->ses->server->ops->copychunk_range) | |
1030 | rc = target_tcon->ses->server->ops->copychunk_range(xid, | |
1031 | smb_file_src, smb_file_target, off, len, destoff); | |
1032 | else | |
1033 | rc = -EOPNOTSUPP; | |
1034 | ||
1035 | /* force revalidate of size and timestamps of target file now | |
1036 | * that target is updated on the server | |
1037 | */ | |
1038 | CIFS_I(target_inode)->time = 0; | |
1039 | /* although unlocking in the reverse order from locking is not | |
1040 | * strictly necessary here it is a little cleaner to be consistent | |
1041 | */ | |
1042 | unlock_two_nondirectories(src_inode, target_inode); | |
1043 | ||
1044 | out: | |
1045 | return rc; | |
1046 | } | |
1047 | ||
1048 | static ssize_t cifs_copy_file_range(struct file *src_file, loff_t off, | |
1049 | struct file *dst_file, loff_t destoff, | |
1050 | size_t len, unsigned int flags) | |
1051 | { | |
1052 | unsigned int xid = get_xid(); | |
1053 | ssize_t rc; | |
1054 | ||
1055 | rc = cifs_file_copychunk_range(xid, src_file, off, dst_file, destoff, | |
1056 | len, flags); | |
1057 | free_xid(xid); | |
1058 | return rc; | |
1059 | } | |
1060 | ||
4b6f5d20 | 1061 | const struct file_operations cifs_file_ops = { |
08bc0353 | 1062 | .read_iter = cifs_loose_read_iter, |
3dae8750 | 1063 | .write_iter = cifs_file_write_iter, |
1da177e4 LT |
1064 | .open = cifs_open, |
1065 | .release = cifs_close, | |
1066 | .lock = cifs_lock, | |
1067 | .fsync = cifs_fsync, | |
1068 | .flush = cifs_flush, | |
1069 | .mmap = cifs_file_mmap, | |
5ffc4ef4 | 1070 | .splice_read = generic_file_splice_read, |
c32a0b68 | 1071 | .llseek = cifs_llseek, |
f9ddcca4 | 1072 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1073 | .copy_file_range = cifs_copy_file_range, |
04b38d60 | 1074 | .clone_file_range = cifs_clone_file_range, |
84210e91 | 1075 | .setlease = cifs_setlease, |
31742c5a | 1076 | .fallocate = cifs_fallocate, |
1da177e4 LT |
1077 | }; |
1078 | ||
8be7e6ba | 1079 | const struct file_operations cifs_file_strict_ops = { |
e6a7bcb4 | 1080 | .read_iter = cifs_strict_readv, |
3dae8750 | 1081 | .write_iter = cifs_strict_writev, |
8be7e6ba PS |
1082 | .open = cifs_open, |
1083 | .release = cifs_close, | |
1084 | .lock = cifs_lock, | |
1085 | .fsync = cifs_strict_fsync, | |
1086 | .flush = cifs_flush, | |
7a6a19b1 | 1087 | .mmap = cifs_file_strict_mmap, |
8be7e6ba PS |
1088 | .splice_read = generic_file_splice_read, |
1089 | .llseek = cifs_llseek, | |
8be7e6ba | 1090 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1091 | .copy_file_range = cifs_copy_file_range, |
04b38d60 | 1092 | .clone_file_range = cifs_clone_file_range, |
8be7e6ba | 1093 | .setlease = cifs_setlease, |
31742c5a | 1094 | .fallocate = cifs_fallocate, |
8be7e6ba PS |
1095 | }; |
1096 | ||
4b6f5d20 | 1097 | const struct file_operations cifs_file_direct_ops = { |
0b81c1c4 | 1098 | /* BB reevaluate whether they can be done with directio, no cache */ |
e6a7bcb4 | 1099 | .read_iter = cifs_user_readv, |
3dae8750 | 1100 | .write_iter = cifs_user_writev, |
1da177e4 LT |
1101 | .open = cifs_open, |
1102 | .release = cifs_close, | |
1103 | .lock = cifs_lock, | |
1104 | .fsync = cifs_fsync, | |
1105 | .flush = cifs_flush, | |
a994b8fa | 1106 | .mmap = cifs_file_mmap, |
5ffc4ef4 | 1107 | .splice_read = generic_file_splice_read, |
f9ddcca4 | 1108 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1109 | .copy_file_range = cifs_copy_file_range, |
04b38d60 | 1110 | .clone_file_range = cifs_clone_file_range, |
c32a0b68 | 1111 | .llseek = cifs_llseek, |
84210e91 | 1112 | .setlease = cifs_setlease, |
31742c5a | 1113 | .fallocate = cifs_fallocate, |
1da177e4 | 1114 | }; |
8be7e6ba | 1115 | |
4b6f5d20 | 1116 | const struct file_operations cifs_file_nobrl_ops = { |
08bc0353 | 1117 | .read_iter = cifs_loose_read_iter, |
3dae8750 | 1118 | .write_iter = cifs_file_write_iter, |
87c89dd7 SF |
1119 | .open = cifs_open, |
1120 | .release = cifs_close, | |
1121 | .fsync = cifs_fsync, | |
1122 | .flush = cifs_flush, | |
1123 | .mmap = cifs_file_mmap, | |
5ffc4ef4 | 1124 | .splice_read = generic_file_splice_read, |
c32a0b68 | 1125 | .llseek = cifs_llseek, |
f9ddcca4 | 1126 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1127 | .copy_file_range = cifs_copy_file_range, |
04b38d60 | 1128 | .clone_file_range = cifs_clone_file_range, |
84210e91 | 1129 | .setlease = cifs_setlease, |
31742c5a | 1130 | .fallocate = cifs_fallocate, |
8b94bcb9 SF |
1131 | }; |
1132 | ||
8be7e6ba | 1133 | const struct file_operations cifs_file_strict_nobrl_ops = { |
e6a7bcb4 | 1134 | .read_iter = cifs_strict_readv, |
3dae8750 | 1135 | .write_iter = cifs_strict_writev, |
8be7e6ba PS |
1136 | .open = cifs_open, |
1137 | .release = cifs_close, | |
1138 | .fsync = cifs_strict_fsync, | |
1139 | .flush = cifs_flush, | |
7a6a19b1 | 1140 | .mmap = cifs_file_strict_mmap, |
8be7e6ba PS |
1141 | .splice_read = generic_file_splice_read, |
1142 | .llseek = cifs_llseek, | |
8be7e6ba | 1143 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1144 | .copy_file_range = cifs_copy_file_range, |
04b38d60 | 1145 | .clone_file_range = cifs_clone_file_range, |
8be7e6ba | 1146 | .setlease = cifs_setlease, |
31742c5a | 1147 | .fallocate = cifs_fallocate, |
8be7e6ba PS |
1148 | }; |
1149 | ||
4b6f5d20 | 1150 | const struct file_operations cifs_file_direct_nobrl_ops = { |
0b81c1c4 | 1151 | /* BB reevaluate whether they can be done with directio, no cache */ |
e6a7bcb4 | 1152 | .read_iter = cifs_user_readv, |
3dae8750 | 1153 | .write_iter = cifs_user_writev, |
87c89dd7 SF |
1154 | .open = cifs_open, |
1155 | .release = cifs_close, | |
1156 | .fsync = cifs_fsync, | |
1157 | .flush = cifs_flush, | |
810627a0 | 1158 | .mmap = cifs_file_mmap, |
5ffc4ef4 | 1159 | .splice_read = generic_file_splice_read, |
f9ddcca4 | 1160 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1161 | .copy_file_range = cifs_copy_file_range, |
04b38d60 | 1162 | .clone_file_range = cifs_clone_file_range, |
c32a0b68 | 1163 | .llseek = cifs_llseek, |
84210e91 | 1164 | .setlease = cifs_setlease, |
31742c5a | 1165 | .fallocate = cifs_fallocate, |
8b94bcb9 | 1166 | }; |
1da177e4 | 1167 | |
4b6f5d20 | 1168 | const struct file_operations cifs_dir_ops = { |
3125d265 | 1169 | .iterate_shared = cifs_readdir, |
1da177e4 LT |
1170 | .release = cifs_closedir, |
1171 | .read = generic_read_dir, | |
f9ddcca4 | 1172 | .unlocked_ioctl = cifs_ioctl, |
620d8745 | 1173 | .copy_file_range = cifs_copy_file_range, |
04b38d60 | 1174 | .clone_file_range = cifs_clone_file_range, |
3222a3e5 | 1175 | .llseek = generic_file_llseek, |
1da177e4 LT |
1176 | }; |
1177 | ||
1178 | static void | |
51cc5068 | 1179 | cifs_init_once(void *inode) |
1da177e4 LT |
1180 | { |
1181 | struct cifsInodeInfo *cifsi = inode; | |
1182 | ||
a35afb83 | 1183 | inode_init_once(&cifsi->vfs_inode); |
1b4b55a1 | 1184 | init_rwsem(&cifsi->lock_sem); |
1da177e4 LT |
1185 | } |
1186 | ||
9ee108b2 | 1187 | static int __init |
1da177e4 LT |
1188 | cifs_init_inodecache(void) |
1189 | { | |
1190 | cifs_inode_cachep = kmem_cache_create("cifs_inode_cache", | |
26f57364 | 1191 | sizeof(struct cifsInodeInfo), |
fffb60f9 | 1192 | 0, (SLAB_RECLAIM_ACCOUNT| |
5d097056 | 1193 | SLAB_MEM_SPREAD|SLAB_ACCOUNT), |
20c2df83 | 1194 | cifs_init_once); |
1da177e4 LT |
1195 | if (cifs_inode_cachep == NULL) |
1196 | return -ENOMEM; | |
1197 | ||
1198 | return 0; | |
1199 | } | |
1200 | ||
1201 | static void | |
1202 | cifs_destroy_inodecache(void) | |
1203 | { | |
8c0a8537 KS |
1204 | /* |
1205 | * Make sure all delayed rcu free inodes are flushed before we | |
1206 | * destroy cache. | |
1207 | */ | |
1208 | rcu_barrier(); | |
1a1d92c1 | 1209 | kmem_cache_destroy(cifs_inode_cachep); |
1da177e4 LT |
1210 | } |
1211 | ||
1212 | static int | |
1213 | cifs_init_request_bufs(void) | |
1214 | { | |
3792c173 PS |
1215 | /* |
1216 | * SMB2 maximum header size is bigger than CIFS one - no problems to | |
1217 | * allocate some more bytes for CIFS. | |
1218 | */ | |
2a38e120 SF |
1219 | size_t max_hdr_size = MAX_SMB2_HDR_SIZE; |
1220 | ||
4523cc30 | 1221 | if (CIFSMaxBufSize < 8192) { |
1da177e4 LT |
1222 | /* Buffer size can not be smaller than 2 * PATH_MAX since maximum |
1223 | Unicode path name has to fit in any SMB/CIFS path based frames */ | |
1224 | CIFSMaxBufSize = 8192; | |
1225 | } else if (CIFSMaxBufSize > 1024*127) { | |
1226 | CIFSMaxBufSize = 1024 * 127; | |
1227 | } else { | |
1228 | CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/ | |
1229 | } | |
f96637be JP |
1230 | /* |
1231 | cifs_dbg(VFS, "CIFSMaxBufSize %d 0x%x\n", | |
1232 | CIFSMaxBufSize, CIFSMaxBufSize); | |
1233 | */ | |
1da177e4 | 1234 | cifs_req_cachep = kmem_cache_create("cifs_request", |
3792c173 | 1235 | CIFSMaxBufSize + max_hdr_size, 0, |
20c2df83 | 1236 | SLAB_HWCACHE_ALIGN, NULL); |
1da177e4 LT |
1237 | if (cifs_req_cachep == NULL) |
1238 | return -ENOMEM; | |
1239 | ||
4523cc30 | 1240 | if (cifs_min_rcv < 1) |
1da177e4 LT |
1241 | cifs_min_rcv = 1; |
1242 | else if (cifs_min_rcv > 64) { | |
1243 | cifs_min_rcv = 64; | |
f96637be | 1244 | cifs_dbg(VFS, "cifs_min_rcv set to maximum (64)\n"); |
1da177e4 LT |
1245 | } |
1246 | ||
93d2341c MD |
1247 | cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv, |
1248 | cifs_req_cachep); | |
1da177e4 | 1249 | |
4523cc30 | 1250 | if (cifs_req_poolp == NULL) { |
1da177e4 LT |
1251 | kmem_cache_destroy(cifs_req_cachep); |
1252 | return -ENOMEM; | |
1253 | } | |
ec637e3f | 1254 | /* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and |
1da177e4 LT |
1255 | almost all handle based requests (but not write response, nor is it |
1256 | sufficient for path based requests). A smaller size would have | |
50c2f753 | 1257 | been more efficient (compacting multiple slab items on one 4k page) |
1da177e4 LT |
1258 | for the case in which debug was on, but this larger size allows |
1259 | more SMBs to use small buffer alloc and is still much more | |
6dc0f87e | 1260 | efficient to alloc 1 per page off the slab compared to 17K (5page) |
1da177e4 LT |
1261 | alloc of large cifs buffers even when page debugging is on */ |
1262 | cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq", | |
6dc0f87e | 1263 | MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN, |
20c2df83 | 1264 | NULL); |
1da177e4 LT |
1265 | if (cifs_sm_req_cachep == NULL) { |
1266 | mempool_destroy(cifs_req_poolp); | |
1267 | kmem_cache_destroy(cifs_req_cachep); | |
6dc0f87e | 1268 | return -ENOMEM; |
1da177e4 LT |
1269 | } |
1270 | ||
4523cc30 | 1271 | if (cifs_min_small < 2) |
1da177e4 LT |
1272 | cifs_min_small = 2; |
1273 | else if (cifs_min_small > 256) { | |
1274 | cifs_min_small = 256; | |
f96637be | 1275 | cifs_dbg(FYI, "cifs_min_small set to maximum (256)\n"); |
1da177e4 LT |
1276 | } |
1277 | ||
93d2341c MD |
1278 | cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small, |
1279 | cifs_sm_req_cachep); | |
1da177e4 | 1280 | |
4523cc30 | 1281 | if (cifs_sm_req_poolp == NULL) { |
1da177e4 LT |
1282 | mempool_destroy(cifs_req_poolp); |
1283 | kmem_cache_destroy(cifs_req_cachep); | |
1284 | kmem_cache_destroy(cifs_sm_req_cachep); | |
1285 | return -ENOMEM; | |
1286 | } | |
1287 | ||
1288 | return 0; | |
1289 | } | |
1290 | ||
1291 | static void | |
1292 | cifs_destroy_request_bufs(void) | |
1293 | { | |
1294 | mempool_destroy(cifs_req_poolp); | |
1a1d92c1 | 1295 | kmem_cache_destroy(cifs_req_cachep); |
1da177e4 | 1296 | mempool_destroy(cifs_sm_req_poolp); |
1a1d92c1 | 1297 | kmem_cache_destroy(cifs_sm_req_cachep); |
1da177e4 LT |
1298 | } |
1299 | ||
1300 | static int | |
1301 | cifs_init_mids(void) | |
1302 | { | |
1303 | cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids", | |
26f57364 SF |
1304 | sizeof(struct mid_q_entry), 0, |
1305 | SLAB_HWCACHE_ALIGN, NULL); | |
1da177e4 LT |
1306 | if (cifs_mid_cachep == NULL) |
1307 | return -ENOMEM; | |
1308 | ||
93d2341c MD |
1309 | /* 3 is a reasonable minimum number of simultaneous operations */ |
1310 | cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep); | |
4523cc30 | 1311 | if (cifs_mid_poolp == NULL) { |
1da177e4 LT |
1312 | kmem_cache_destroy(cifs_mid_cachep); |
1313 | return -ENOMEM; | |
1314 | } | |
1315 | ||
1da177e4 LT |
1316 | return 0; |
1317 | } | |
1318 | ||
1319 | static void | |
1320 | cifs_destroy_mids(void) | |
1321 | { | |
1322 | mempool_destroy(cifs_mid_poolp); | |
1a1d92c1 | 1323 | kmem_cache_destroy(cifs_mid_cachep); |
1da177e4 LT |
1324 | } |
1325 | ||
1da177e4 LT |
1326 | static int __init |
1327 | init_cifs(void) | |
1328 | { | |
1329 | int rc = 0; | |
1da177e4 | 1330 | cifs_proc_init(); |
e7ddee90 | 1331 | INIT_LIST_HEAD(&cifs_tcp_ses_list); |
0eff0e26 | 1332 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
4ca9c190 SF |
1333 | INIT_LIST_HEAD(&GlobalDnotifyReqList); |
1334 | INIT_LIST_HEAD(&GlobalDnotifyRsp_Q); | |
0eff0e26 | 1335 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
1da177e4 LT |
1336 | /* |
1337 | * Initialize Global counters | |
1338 | */ | |
1339 | atomic_set(&sesInfoAllocCount, 0); | |
1340 | atomic_set(&tconInfoAllocCount, 0); | |
6dc0f87e | 1341 | atomic_set(&tcpSesAllocCount, 0); |
1da177e4 LT |
1342 | atomic_set(&tcpSesReconnectCount, 0); |
1343 | atomic_set(&tconInfoReconnectCount, 0); | |
1344 | ||
1345 | atomic_set(&bufAllocCount, 0); | |
4498eed5 SF |
1346 | atomic_set(&smBufAllocCount, 0); |
1347 | #ifdef CONFIG_CIFS_STATS2 | |
1348 | atomic_set(&totBufAllocCount, 0); | |
1349 | atomic_set(&totSmBufAllocCount, 0); | |
1350 | #endif /* CONFIG_CIFS_STATS2 */ | |
1351 | ||
1da177e4 LT |
1352 | atomic_set(&midCount, 0); |
1353 | GlobalCurrentXid = 0; | |
1354 | GlobalTotalActiveXid = 0; | |
1355 | GlobalMaxActiveXid = 0; | |
3f9bcca7 | 1356 | spin_lock_init(&cifs_tcp_ses_lock); |
1da177e4 LT |
1357 | spin_lock_init(&GlobalMid_Lock); |
1358 | ||
51b0817b | 1359 | cifs_lock_secret = get_random_u32(); |
3d22462a | 1360 | |
4523cc30 | 1361 | if (cifs_max_pending < 2) { |
1da177e4 | 1362 | cifs_max_pending = 2; |
f96637be | 1363 | cifs_dbg(FYI, "cifs_max_pending set to min of 2\n"); |
10b9b98e PS |
1364 | } else if (cifs_max_pending > CIFS_MAX_REQ) { |
1365 | cifs_max_pending = CIFS_MAX_REQ; | |
f96637be JP |
1366 | cifs_dbg(FYI, "cifs_max_pending set to max of %u\n", |
1367 | CIFS_MAX_REQ); | |
1da177e4 LT |
1368 | } |
1369 | ||
da472fc8 JL |
1370 | cifsiod_wq = alloc_workqueue("cifsiod", WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
1371 | if (!cifsiod_wq) { | |
1372 | rc = -ENOMEM; | |
1373 | goto out_clean_proc; | |
1374 | } | |
1375 | ||
3998e6b8 RV |
1376 | cifsoplockd_wq = alloc_workqueue("cifsoplockd", |
1377 | WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); | |
1378 | if (!cifsoplockd_wq) { | |
1379 | rc = -ENOMEM; | |
1380 | goto out_destroy_cifsiod_wq; | |
1381 | } | |
1382 | ||
f579cf3c SJ |
1383 | rc = cifs_fscache_register(); |
1384 | if (rc) | |
3998e6b8 | 1385 | goto out_destroy_cifsoplockd_wq; |
f579cf3c | 1386 | |
1da177e4 | 1387 | rc = cifs_init_inodecache(); |
45af7a0f | 1388 | if (rc) |
d3bf5221 | 1389 | goto out_unreg_fscache; |
45af7a0f SF |
1390 | |
1391 | rc = cifs_init_mids(); | |
1392 | if (rc) | |
1393 | goto out_destroy_inodecache; | |
1394 | ||
1395 | rc = cifs_init_request_bufs(); | |
1396 | if (rc) | |
1397 | goto out_destroy_mids; | |
1398 | ||
84a15b93 | 1399 | #ifdef CONFIG_CIFS_UPCALL |
b74cb9a8 | 1400 | rc = init_cifs_spnego(); |
84a15b93 | 1401 | if (rc) |
4d79dba0 SP |
1402 | goto out_destroy_request_bufs; |
1403 | #endif /* CONFIG_CIFS_UPCALL */ | |
1404 | ||
1405 | #ifdef CONFIG_CIFS_ACL | |
1406 | rc = init_cifs_idmap(); | |
1407 | if (rc) | |
c4aca0c0 | 1408 | goto out_register_key_type; |
4d79dba0 SP |
1409 | #endif /* CONFIG_CIFS_ACL */ |
1410 | ||
1411 | rc = register_filesystem(&cifs_fs_type); | |
1412 | if (rc) | |
c4aca0c0 | 1413 | goto out_init_cifs_idmap; |
45af7a0f | 1414 | |
45af7a0f SF |
1415 | return 0; |
1416 | ||
c4aca0c0 | 1417 | out_init_cifs_idmap: |
4d79dba0 SP |
1418 | #ifdef CONFIG_CIFS_ACL |
1419 | exit_cifs_idmap(); | |
c4aca0c0 | 1420 | out_register_key_type: |
4d79dba0 | 1421 | #endif |
84a15b93 | 1422 | #ifdef CONFIG_CIFS_UPCALL |
b74cb9a8 | 1423 | exit_cifs_spnego(); |
c4aca0c0 | 1424 | out_destroy_request_bufs: |
1fc7995d | 1425 | #endif |
45af7a0f | 1426 | cifs_destroy_request_bufs(); |
d3bf5221 | 1427 | out_destroy_mids: |
45af7a0f | 1428 | cifs_destroy_mids(); |
d3bf5221 | 1429 | out_destroy_inodecache: |
45af7a0f | 1430 | cifs_destroy_inodecache(); |
d3bf5221 | 1431 | out_unreg_fscache: |
f579cf3c | 1432 | cifs_fscache_unregister(); |
3998e6b8 RV |
1433 | out_destroy_cifsoplockd_wq: |
1434 | destroy_workqueue(cifsoplockd_wq); | |
1435 | out_destroy_cifsiod_wq: | |
da472fc8 | 1436 | destroy_workqueue(cifsiod_wq); |
d3bf5221 SF |
1437 | out_clean_proc: |
1438 | cifs_proc_clean(); | |
1da177e4 LT |
1439 | return rc; |
1440 | } | |
1441 | ||
1442 | static void __exit | |
1443 | exit_cifs(void) | |
1444 | { | |
f96637be | 1445 | cifs_dbg(NOISY, "exit_cifs\n"); |
3dd93306 | 1446 | unregister_filesystem(&cifs_fs_type); |
78d31a3a | 1447 | cifs_dfs_release_automount_timer(); |
4d79dba0 | 1448 | #ifdef CONFIG_CIFS_ACL |
4d79dba0 SP |
1449 | exit_cifs_idmap(); |
1450 | #endif | |
84a15b93 | 1451 | #ifdef CONFIG_CIFS_UPCALL |
94183331 | 1452 | exit_cifs_spnego(); |
1da177e4 | 1453 | #endif |
1da177e4 | 1454 | cifs_destroy_request_bufs(); |
3dd93306 JL |
1455 | cifs_destroy_mids(); |
1456 | cifs_destroy_inodecache(); | |
1457 | cifs_fscache_unregister(); | |
3998e6b8 | 1458 | destroy_workqueue(cifsoplockd_wq); |
da472fc8 | 1459 | destroy_workqueue(cifsiod_wq); |
3dd93306 | 1460 | cifs_proc_clean(); |
1da177e4 LT |
1461 | } |
1462 | ||
1463 | MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>"); | |
6dc0f87e | 1464 | MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */ |
1da177e4 | 1465 | MODULE_DESCRIPTION |
63135e08 SF |
1466 | ("VFS to access servers complying with the SNIA CIFS Specification " |
1467 | "e.g. Samba and Windows"); | |
1da177e4 | 1468 | MODULE_VERSION(CIFS_VERSION); |
b9be76d5 JD |
1469 | MODULE_SOFTDEP("pre: arc4"); |
1470 | MODULE_SOFTDEP("pre: des"); | |
1471 | MODULE_SOFTDEP("pre: ecb"); | |
1472 | MODULE_SOFTDEP("pre: hmac"); | |
1473 | MODULE_SOFTDEP("pre: md4"); | |
1474 | MODULE_SOFTDEP("pre: md5"); | |
1475 | MODULE_SOFTDEP("pre: nls"); | |
b9be76d5 JD |
1476 | MODULE_SOFTDEP("pre: aes"); |
1477 | MODULE_SOFTDEP("pre: cmac"); | |
1478 | MODULE_SOFTDEP("pre: sha256"); | |
026e93dc PS |
1479 | MODULE_SOFTDEP("pre: aead2"); |
1480 | MODULE_SOFTDEP("pre: ccm"); | |
1da177e4 LT |
1481 | module_init(init_cifs) |
1482 | module_exit(exit_cifs) |