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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/dir.c | |
3 | * | |
4 | * vfs operations that deal with dentries | |
5fdae1f6 | 5 | * |
c3b2a0c6 | 6 | * Copyright (C) International Business Machines Corp., 2002,2009 |
1da177e4 LT |
7 | * Author(s): Steve French (sfrench@us.ibm.com) |
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 | #include <linux/fs.h> | |
24 | #include <linux/stat.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/namei.h> | |
3bc303c2 | 27 | #include <linux/mount.h> |
6ca9f3ba | 28 | #include <linux/file.h> |
1da177e4 LT |
29 | #include "cifsfs.h" |
30 | #include "cifspdu.h" | |
31 | #include "cifsglob.h" | |
32 | #include "cifsproto.h" | |
33 | #include "cifs_debug.h" | |
34 | #include "cifs_fs_sb.h" | |
ec71e0e1 | 35 | #include "cifs_unicode.h" |
1da177e4 | 36 | |
99ee4dbd | 37 | static void |
1da177e4 LT |
38 | renew_parental_timestamps(struct dentry *direntry) |
39 | { | |
5fdae1f6 SF |
40 | /* BB check if there is a way to get the kernel to do this or if we |
41 | really need this */ | |
1da177e4 | 42 | do { |
a00be0e3 | 43 | cifs_set_time(direntry, jiffies); |
1da177e4 | 44 | direntry = direntry->d_parent; |
5fdae1f6 | 45 | } while (!IS_ROOT(direntry)); |
1da177e4 LT |
46 | } |
47 | ||
6d3ea7e4 SF |
48 | char * |
49 | cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb, | |
374402a2 | 50 | struct cifs_tcon *tcon, int add_treename) |
6d3ea7e4 | 51 | { |
839db3d1 | 52 | int pplen = vol->prepath ? strlen(vol->prepath) + 1 : 0; |
6d3ea7e4 SF |
53 | int dfsplen; |
54 | char *full_path = NULL; | |
55 | ||
56 | /* if no prefix path, simply set path to the root of share to "" */ | |
57 | if (pplen == 0) { | |
58 | full_path = kzalloc(1, GFP_KERNEL); | |
59 | return full_path; | |
60 | } | |
61 | ||
374402a2 | 62 | if (add_treename) |
6d3ea7e4 SF |
63 | dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1); |
64 | else | |
65 | dfsplen = 0; | |
66 | ||
67 | full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL); | |
68 | if (full_path == NULL) | |
69 | return full_path; | |
70 | ||
71 | if (dfsplen) | |
72 | strncpy(full_path, tcon->treeName, dfsplen); | |
839db3d1 JL |
73 | full_path[dfsplen] = CIFS_DIR_SEP(cifs_sb); |
74 | strncpy(full_path + dfsplen + 1, vol->prepath, pplen); | |
6d3ea7e4 SF |
75 | convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb)); |
76 | full_path[dfsplen + pplen] = 0; /* add trailing null */ | |
77 | return full_path; | |
78 | } | |
79 | ||
1da177e4 LT |
80 | /* Note: caller must free return buffer */ |
81 | char * | |
82 | build_path_from_dentry(struct dentry *direntry) | |
83 | { | |
84 | struct dentry *temp; | |
2fe87f02 | 85 | int namelen; |
646dd539 | 86 | int dfsplen; |
a6b5058f | 87 | int pplen = 0; |
1da177e4 | 88 | char *full_path; |
88274815 | 89 | char dirsep; |
0d424ad0 | 90 | struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb); |
96daf2b0 | 91 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
dc137bf5 | 92 | unsigned seq; |
1da177e4 | 93 | |
646dd539 | 94 | dirsep = CIFS_DIR_SEP(cifs_sb); |
0d424ad0 JL |
95 | if (tcon->Flags & SMB_SHARE_IS_IN_DFS) |
96 | dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1); | |
646dd539 SF |
97 | else |
98 | dfsplen = 0; | |
a6b5058f AA |
99 | |
100 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) | |
101 | pplen = cifs_sb->prepath ? strlen(cifs_sb->prepath) + 1 : 0; | |
102 | ||
1da177e4 | 103 | cifs_bp_rename_retry: |
a6b5058f | 104 | namelen = dfsplen + pplen; |
dc137bf5 AV |
105 | seq = read_seqbegin(&rename_lock); |
106 | rcu_read_lock(); | |
1da177e4 LT |
107 | for (temp = direntry; !IS_ROOT(temp);) { |
108 | namelen += (1 + temp->d_name.len); | |
109 | temp = temp->d_parent; | |
5fdae1f6 | 110 | if (temp == NULL) { |
f96637be | 111 | cifs_dbg(VFS, "corrupt dentry\n"); |
dc137bf5 | 112 | rcu_read_unlock(); |
1da177e4 LT |
113 | return NULL; |
114 | } | |
115 | } | |
dc137bf5 | 116 | rcu_read_unlock(); |
1da177e4 LT |
117 | |
118 | full_path = kmalloc(namelen+1, GFP_KERNEL); | |
5fdae1f6 | 119 | if (full_path == NULL) |
1da177e4 LT |
120 | return full_path; |
121 | full_path[namelen] = 0; /* trailing null */ | |
dc137bf5 | 122 | rcu_read_lock(); |
1da177e4 | 123 | for (temp = direntry; !IS_ROOT(temp);) { |
dc137bf5 | 124 | spin_lock(&temp->d_lock); |
1da177e4 LT |
125 | namelen -= 1 + temp->d_name.len; |
126 | if (namelen < 0) { | |
dc137bf5 | 127 | spin_unlock(&temp->d_lock); |
1da177e4 LT |
128 | break; |
129 | } else { | |
7f57356b | 130 | full_path[namelen] = dirsep; |
1da177e4 LT |
131 | strncpy(full_path + namelen + 1, temp->d_name.name, |
132 | temp->d_name.len); | |
f96637be | 133 | cifs_dbg(FYI, "name: %s\n", full_path + namelen); |
1da177e4 | 134 | } |
dc137bf5 | 135 | spin_unlock(&temp->d_lock); |
1da177e4 | 136 | temp = temp->d_parent; |
5fdae1f6 | 137 | if (temp == NULL) { |
f96637be | 138 | cifs_dbg(VFS, "corrupt dentry\n"); |
dc137bf5 | 139 | rcu_read_unlock(); |
1da177e4 LT |
140 | kfree(full_path); |
141 | return NULL; | |
142 | } | |
143 | } | |
dc137bf5 | 144 | rcu_read_unlock(); |
a6b5058f | 145 | if (namelen != dfsplen + pplen || read_seqretry(&rename_lock, seq)) { |
f96637be JP |
146 | cifs_dbg(FYI, "did not end path lookup where expected. namelen=%ddfsplen=%d\n", |
147 | namelen, dfsplen); | |
5fdae1f6 | 148 | /* presumably this is only possible if racing with a rename |
1da177e4 LT |
149 | of one of the parent directories (we can not lock the dentries |
150 | above us to prevent this, but retrying should be harmless) */ | |
151 | kfree(full_path); | |
1da177e4 LT |
152 | goto cifs_bp_rename_retry; |
153 | } | |
2fe87f02 SF |
154 | /* DIR_SEP already set for byte 0 / vs \ but not for |
155 | subsequent slashes in prepath which currently must | |
156 | be entered the right way - not sure if there is an alternative | |
157 | since the '\' is a valid posix character so we can not switch | |
158 | those safely to '/' if any are found in the middle of the prepath */ | |
159 | /* BB test paths to Windows with '/' in the midst of prepath */ | |
646dd539 | 160 | |
a6b5058f AA |
161 | if (pplen) { |
162 | int i; | |
163 | ||
164 | cifs_dbg(FYI, "using cifs_sb prepath <%s>\n", cifs_sb->prepath); | |
165 | memcpy(full_path+dfsplen+1, cifs_sb->prepath, pplen-1); | |
166 | full_path[dfsplen] = '\\'; | |
167 | for (i = 0; i < pplen-1; i++) | |
168 | if (full_path[dfsplen+1+i] == '/') | |
169 | full_path[dfsplen+1+i] = CIFS_DIR_SEP(cifs_sb); | |
170 | } | |
171 | ||
646dd539 | 172 | if (dfsplen) { |
0d424ad0 | 173 | strncpy(full_path, tcon->treeName, dfsplen); |
646dd539 SF |
174 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { |
175 | int i; | |
176 | for (i = 0; i < dfsplen; i++) { | |
177 | if (full_path[i] == '\\') | |
178 | full_path[i] = '/'; | |
179 | } | |
180 | } | |
181 | } | |
1da177e4 LT |
182 | return full_path; |
183 | } | |
184 | ||
d2c12719 MS |
185 | /* |
186 | * Don't allow the separator character in a path component. | |
187 | * The VFS will not allow "/", but "\" is allowed by posix. | |
188 | */ | |
189 | static int | |
190 | check_name(struct dentry *direntry) | |
191 | { | |
192 | struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb); | |
193 | int i; | |
194 | ||
195 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)) { | |
196 | for (i = 0; i < direntry->d_name.len; i++) { | |
197 | if (direntry->d_name.name[i] == '\\') { | |
f96637be | 198 | cifs_dbg(FYI, "Invalid file name\n"); |
d2c12719 MS |
199 | return -EINVAL; |
200 | } | |
201 | } | |
202 | } | |
203 | return 0; | |
204 | } | |
205 | ||
206 | ||
3979877e | 207 | /* Inode operations in similar order to how they appear in Linux file fs.h */ |
1da177e4 | 208 | |
6d5786a3 PS |
209 | static int |
210 | cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid, | |
211 | struct tcon_link *tlink, unsigned oflags, umode_t mode, | |
f1e32681 | 212 | __u32 *oplock, struct cifs_fid *fid) |
1da177e4 LT |
213 | { |
214 | int rc = -ENOENT; | |
67750fb9 | 215 | int create_options = CREATE_NOT_DIR; |
25364138 | 216 | int desired_access; |
d2c12719 MS |
217 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
218 | struct cifs_tcon *tcon = tlink_tcon(tlink); | |
1da177e4 | 219 | char *full_path = NULL; |
fb8c4b14 | 220 | FILE_ALL_INFO *buf = NULL; |
1da177e4 | 221 | struct inode *newinode = NULL; |
d2c12719 | 222 | int disposition; |
25364138 | 223 | struct TCP_Server_Info *server = tcon->ses->server; |
226730b4 | 224 | struct cifs_open_parms oparms; |
1da177e4 | 225 | |
d2c12719 | 226 | *oplock = 0; |
10b9b98e | 227 | if (tcon->ses->server->oplocks) |
d2c12719 | 228 | *oplock = REQ_OPLOCK; |
c3b2a0c6 | 229 | |
7ffec372 JL |
230 | full_path = build_path_from_dentry(direntry); |
231 | if (full_path == NULL) { | |
232 | rc = -ENOMEM; | |
d2c12719 | 233 | goto out; |
7ffec372 JL |
234 | } |
235 | ||
29e20f9c | 236 | if (tcon->unix_ext && cap_unix(tcon->ses) && !tcon->broken_posix_open && |
c3b2a0c6 SF |
237 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
238 | le64_to_cpu(tcon->fsUnixInfo.Capability))) { | |
25364138 PS |
239 | rc = cifs_posix_open(full_path, &newinode, inode->i_sb, mode, |
240 | oflags, oplock, &fid->netfid, xid); | |
d2c12719 MS |
241 | switch (rc) { |
242 | case 0: | |
243 | if (newinode == NULL) { | |
244 | /* query inode info */ | |
90e4ee5d | 245 | goto cifs_create_get_file_info; |
d2c12719 MS |
246 | } |
247 | ||
8d9535b6 SP |
248 | if (S_ISDIR(newinode->i_mode)) { |
249 | CIFSSMBClose(xid, tcon, fid->netfid); | |
250 | iput(newinode); | |
251 | rc = -EISDIR; | |
252 | goto out; | |
253 | } | |
254 | ||
d2c12719 MS |
255 | if (!S_ISREG(newinode->i_mode)) { |
256 | /* | |
257 | * The server may allow us to open things like | |
258 | * FIFOs, but the client isn't set up to deal | |
259 | * with that. If it's not a regular file, just | |
260 | * close it and proceed as if it were a normal | |
261 | * lookup. | |
262 | */ | |
25364138 | 263 | CIFSSMBClose(xid, tcon, fid->netfid); |
d2c12719 MS |
264 | goto cifs_create_get_file_info; |
265 | } | |
266 | /* success, no need to query */ | |
267 | goto cifs_create_set_dentry; | |
268 | ||
269 | case -ENOENT: | |
270 | goto cifs_create_get_file_info; | |
271 | ||
272 | case -EIO: | |
273 | case -EINVAL: | |
274 | /* | |
275 | * EIO could indicate that (posix open) operation is not | |
276 | * supported, despite what server claimed in capability | |
277 | * negotiation. | |
278 | * | |
279 | * POSIX open in samba versions 3.3.1 and earlier could | |
280 | * incorrectly fail with invalid parameter. | |
281 | */ | |
282 | tcon->broken_posix_open = true; | |
283 | break; | |
284 | ||
285 | case -EREMOTE: | |
286 | case -EOPNOTSUPP: | |
287 | /* | |
288 | * EREMOTE indicates DFS junction, which is not handled | |
289 | * in posix open. If either that or op not supported | |
290 | * returned, follow the normal lookup. | |
291 | */ | |
292 | break; | |
e08fc045 | 293 | |
d2c12719 MS |
294 | default: |
295 | goto out; | |
296 | } | |
297 | /* | |
298 | * fallthrough to retry, using older open call, this is case | |
299 | * where server does not support this SMB level, and falsely | |
300 | * claims capability (also get here for DFS case which should be | |
301 | * rare for path not covered on files) | |
302 | */ | |
1da177e4 LT |
303 | } |
304 | ||
25364138 | 305 | desired_access = 0; |
d2c12719 | 306 | if (OPEN_FMODE(oflags) & FMODE_READ) |
25364138 | 307 | desired_access |= GENERIC_READ; /* is this too little? */ |
d2c12719 | 308 | if (OPEN_FMODE(oflags) & FMODE_WRITE) |
25364138 | 309 | desired_access |= GENERIC_WRITE; |
d2c12719 MS |
310 | |
311 | disposition = FILE_OVERWRITE_IF; | |
312 | if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)) | |
313 | disposition = FILE_CREATE; | |
314 | else if ((oflags & (O_CREAT | O_TRUNC)) == (O_CREAT | O_TRUNC)) | |
315 | disposition = FILE_OVERWRITE_IF; | |
316 | else if ((oflags & O_CREAT) == O_CREAT) | |
317 | disposition = FILE_OPEN_IF; | |
318 | else | |
f96637be | 319 | cifs_dbg(FYI, "Create flag not set in create function\n"); |
d2c12719 | 320 | |
25364138 PS |
321 | /* |
322 | * BB add processing to set equivalent of mode - e.g. via CreateX with | |
323 | * ACLs | |
324 | */ | |
325 | ||
326 | if (!server->ops->open) { | |
327 | rc = -ENOSYS; | |
328 | goto out; | |
329 | } | |
1da177e4 | 330 | |
5fdae1f6 SF |
331 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
332 | if (buf == NULL) { | |
232341ba | 333 | rc = -ENOMEM; |
d2c12719 | 334 | goto out; |
1da177e4 | 335 | } |
67750fb9 | 336 | |
67750fb9 JL |
337 | /* |
338 | * if we're not using unix extensions, see if we need to set | |
339 | * ATTR_READONLY on the create call | |
340 | */ | |
f818dd55 | 341 | if (!tcon->unix_ext && (mode & S_IWUGO) == 0) |
67750fb9 JL |
342 | create_options |= CREATE_OPTION_READONLY; |
343 | ||
3d3ea8e6 SP |
344 | if (backup_cred(cifs_sb)) |
345 | create_options |= CREATE_OPEN_BACKUP_INTENT; | |
346 | ||
226730b4 PS |
347 | oparms.tcon = tcon; |
348 | oparms.cifs_sb = cifs_sb; | |
349 | oparms.desired_access = desired_access; | |
350 | oparms.create_options = create_options; | |
351 | oparms.disposition = disposition; | |
352 | oparms.path = full_path; | |
353 | oparms.fid = fid; | |
9cbc0b73 | 354 | oparms.reconnect = false; |
226730b4 PS |
355 | |
356 | rc = server->ops->open(xid, &oparms, oplock, buf); | |
1da177e4 | 357 | if (rc) { |
f96637be | 358 | cifs_dbg(FYI, "cifs_create returned 0x%x\n", rc); |
d2c12719 | 359 | goto out; |
c3b2a0c6 SF |
360 | } |
361 | ||
25364138 PS |
362 | /* |
363 | * If Open reported that we actually created a file then we now have to | |
364 | * set the mode if possible. | |
365 | */ | |
d2c12719 | 366 | if ((tcon->unix_ext) && (*oplock & CIFS_CREATE_ACTION)) { |
c3b2a0c6 | 367 | struct cifs_unix_set_info_args args = { |
4e1e7fb9 JL |
368 | .mode = mode, |
369 | .ctime = NO_CHANGE_64, | |
370 | .atime = NO_CHANGE_64, | |
371 | .mtime = NO_CHANGE_64, | |
372 | .device = 0, | |
c3b2a0c6 SF |
373 | }; |
374 | ||
375 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { | |
49418b2c | 376 | args.uid = current_fsuid(); |
c3b2a0c6 | 377 | if (inode->i_mode & S_ISGID) |
49418b2c | 378 | args.gid = inode->i_gid; |
c3b2a0c6 | 379 | else |
49418b2c | 380 | args.gid = current_fsgid(); |
3ce53fc4 | 381 | } else { |
49418b2c EB |
382 | args.uid = INVALID_UID; /* no change */ |
383 | args.gid = INVALID_GID; /* no change */ | |
1da177e4 | 384 | } |
25364138 PS |
385 | CIFSSMBUnixSetFileInfo(xid, tcon, &args, fid->netfid, |
386 | current->tgid); | |
c3b2a0c6 | 387 | } else { |
25364138 PS |
388 | /* |
389 | * BB implement mode setting via Windows security | |
390 | * descriptors e.g. | |
391 | */ | |
c3b2a0c6 SF |
392 | /* CIFSSMBWinSetPerms(xid,tcon,path,mode,-1,-1,nls);*/ |
393 | ||
394 | /* Could set r/o dos attribute if mode & 0222 == 0 */ | |
395 | } | |
1da177e4 | 396 | |
c3b2a0c6 SF |
397 | cifs_create_get_file_info: |
398 | /* server might mask mode so we have to query for it */ | |
399 | if (tcon->unix_ext) | |
25364138 PS |
400 | rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb, |
401 | xid); | |
c3b2a0c6 | 402 | else { |
25364138 | 403 | rc = cifs_get_inode_info(&newinode, full_path, buf, inode->i_sb, |
42eacf9e | 404 | xid, fid); |
c3b2a0c6 | 405 | if (newinode) { |
b8c32dbb PS |
406 | if (server->ops->set_lease_key) |
407 | server->ops->set_lease_key(newinode, fid); | |
c3b2a0c6 SF |
408 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) |
409 | newinode->i_mode = mode; | |
d2c12719 | 410 | if ((*oplock & CIFS_CREATE_ACTION) && |
c3b2a0c6 SF |
411 | (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) { |
412 | newinode->i_uid = current_fsuid(); | |
413 | if (inode->i_mode & S_ISGID) | |
414 | newinode->i_gid = inode->i_gid; | |
415 | else | |
416 | newinode->i_gid = current_fsgid(); | |
6473a559 | 417 | } |
1da177e4 | 418 | } |
c3b2a0c6 | 419 | } |
1da177e4 | 420 | |
c3b2a0c6 | 421 | cifs_create_set_dentry: |
d2c12719 | 422 | if (rc != 0) { |
f96637be JP |
423 | cifs_dbg(FYI, "Create worked, get_inode_info failed rc = %d\n", |
424 | rc); | |
8d9535b6 | 425 | goto out_err; |
d2c12719 | 426 | } |
8d9535b6 SP |
427 | |
428 | if (S_ISDIR(newinode->i_mode)) { | |
429 | rc = -EISDIR; | |
430 | goto out_err; | |
d2c12719 | 431 | } |
8d9535b6 | 432 | |
d2c12719 MS |
433 | d_drop(direntry); |
434 | d_add(direntry, newinode); | |
c3b2a0c6 | 435 | |
d2c12719 MS |
436 | out: |
437 | kfree(buf); | |
438 | kfree(full_path); | |
439 | return rc; | |
8d9535b6 SP |
440 | |
441 | out_err: | |
442 | if (server->ops->close) | |
443 | server->ops->close(xid, tcon, fid); | |
444 | if (newinode) | |
445 | iput(newinode); | |
446 | goto out; | |
d2c12719 | 447 | } |
6ca9f3ba | 448 | |
d9585277 | 449 | int |
d2c12719 | 450 | cifs_atomic_open(struct inode *inode, struct dentry *direntry, |
30d90494 | 451 | struct file *file, unsigned oflags, umode_t mode, |
47237687 | 452 | int *opened) |
d2c12719 MS |
453 | { |
454 | int rc; | |
6d5786a3 | 455 | unsigned int xid; |
d2c12719 MS |
456 | struct tcon_link *tlink; |
457 | struct cifs_tcon *tcon; | |
25364138 | 458 | struct TCP_Server_Info *server; |
fb1214e4 | 459 | struct cifs_fid fid; |
233839b1 | 460 | struct cifs_pending_open open; |
d2c12719 | 461 | __u32 oplock; |
fb1214e4 | 462 | struct cifsFileInfo *file_info; |
d2c12719 | 463 | |
fb1214e4 PS |
464 | /* |
465 | * Posix open is only called (at lookup time) for file create now. For | |
d2c12719 MS |
466 | * opens (rather than creates), because we do not know if it is a file |
467 | * or directory yet, and current Samba no longer allows us to do posix | |
468 | * open on dirs, we could end up wasting an open call on what turns out | |
469 | * to be a dir. For file opens, we wait to call posix open till | |
470 | * cifs_open. It could be added to atomic_open in the future but the | |
471 | * performance tradeoff of the extra network request when EISDIR or | |
472 | * EACCES is returned would have to be weighed against the 50% reduction | |
473 | * in network traffic in the other paths. | |
474 | */ | |
475 | if (!(oflags & O_CREAT)) { | |
3798f47a SP |
476 | struct dentry *res; |
477 | ||
478 | /* | |
479 | * Check for hashed negative dentry. We have already revalidated | |
480 | * the dentry and it is fine. No need to perform another lookup. | |
481 | */ | |
00699ad8 | 482 | if (!d_in_lookup(direntry)) |
3798f47a SP |
483 | return -ENOENT; |
484 | ||
485 | res = cifs_lookup(inode, direntry, 0); | |
d2c12719 | 486 | if (IS_ERR(res)) |
d9585277 | 487 | return PTR_ERR(res); |
d2c12719 | 488 | |
e45198a6 | 489 | return finish_no_open(file, res); |
d2c12719 MS |
490 | } |
491 | ||
492 | rc = check_name(direntry); | |
493 | if (rc) | |
d9585277 | 494 | return rc; |
d2c12719 | 495 | |
6d5786a3 | 496 | xid = get_xid(); |
d2c12719 | 497 | |
35c265e0 AV |
498 | cifs_dbg(FYI, "parent inode = 0x%p name is: %pd and dentry = 0x%p\n", |
499 | inode, direntry, direntry); | |
d2c12719 MS |
500 | |
501 | tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb)); | |
efb79f28 WY |
502 | if (IS_ERR(tlink)) { |
503 | rc = PTR_ERR(tlink); | |
6d5786a3 | 504 | goto out_free_xid; |
efb79f28 | 505 | } |
d2c12719 MS |
506 | |
507 | tcon = tlink_tcon(tlink); | |
25364138 | 508 | server = tcon->ses->server; |
d2c12719 | 509 | |
b8c32dbb PS |
510 | if (server->ops->new_lease_key) |
511 | server->ops->new_lease_key(&fid); | |
512 | ||
233839b1 PS |
513 | cifs_add_pending_open(&fid, tlink, &open); |
514 | ||
d2c12719 | 515 | rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode, |
f1e32681 | 516 | &oplock, &fid); |
d2c12719 | 517 | |
233839b1 PS |
518 | if (rc) { |
519 | cifs_del_pending_open(&open); | |
d2c12719 | 520 | goto out; |
233839b1 | 521 | } |
d2c12719 | 522 | |
f1e32681 SP |
523 | if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)) |
524 | *opened |= FILE_CREATED; | |
525 | ||
30d90494 AV |
526 | rc = finish_open(file, direntry, generic_file_open, opened); |
527 | if (rc) { | |
25364138 PS |
528 | if (server->ops->close) |
529 | server->ops->close(xid, tcon, &fid); | |
233839b1 | 530 | cifs_del_pending_open(&open); |
d2c12719 | 531 | goto out; |
5fdae1f6 | 532 | } |
2422f676 | 533 | |
787aded6 NJ |
534 | if (file->f_flags & O_DIRECT && |
535 | CIFS_SB(inode->i_sb)->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) { | |
536 | if (CIFS_SB(inode->i_sb)->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) | |
537 | file->f_op = &cifs_file_direct_nobrl_ops; | |
538 | else | |
539 | file->f_op = &cifs_file_direct_ops; | |
540 | } | |
541 | ||
fb1214e4 PS |
542 | file_info = cifs_new_fileinfo(&fid, file, tlink, oplock); |
543 | if (file_info == NULL) { | |
25364138 PS |
544 | if (server->ops->close) |
545 | server->ops->close(xid, tcon, &fid); | |
233839b1 | 546 | cifs_del_pending_open(&open); |
dfb1d61b | 547 | fput(file); |
d9585277 | 548 | rc = -ENOMEM; |
d2c12719 MS |
549 | } |
550 | ||
551 | out: | |
552 | cifs_put_tlink(tlink); | |
6d5786a3 PS |
553 | out_free_xid: |
554 | free_xid(xid); | |
d9585277 | 555 | return rc; |
d2c12719 MS |
556 | } |
557 | ||
558 | int cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode, | |
ebfc3b49 | 559 | bool excl) |
d2c12719 MS |
560 | { |
561 | int rc; | |
6d5786a3 | 562 | unsigned int xid = get_xid(); |
d2c12719 MS |
563 | /* |
564 | * BB below access is probably too much for mknod to request | |
565 | * but we have to do query and setpathinfo so requesting | |
566 | * less could fail (unless we want to request getatr and setatr | |
567 | * permissions (only). At least for POSIX we do not have to | |
568 | * request so much. | |
569 | */ | |
570 | unsigned oflags = O_EXCL | O_CREAT | O_RDWR; | |
571 | struct tcon_link *tlink; | |
25364138 PS |
572 | struct cifs_tcon *tcon; |
573 | struct TCP_Server_Info *server; | |
574 | struct cifs_fid fid; | |
d2c12719 | 575 | __u32 oplock; |
d2c12719 | 576 | |
35c265e0 AV |
577 | cifs_dbg(FYI, "cifs_create parent inode = 0x%p name is: %pd and dentry = 0x%p\n", |
578 | inode, direntry, direntry); | |
d2c12719 MS |
579 | |
580 | tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb)); | |
581 | rc = PTR_ERR(tlink); | |
582 | if (IS_ERR(tlink)) | |
6d5786a3 | 583 | goto out_free_xid; |
d2c12719 | 584 | |
25364138 PS |
585 | tcon = tlink_tcon(tlink); |
586 | server = tcon->ses->server; | |
b8c32dbb PS |
587 | |
588 | if (server->ops->new_lease_key) | |
589 | server->ops->new_lease_key(&fid); | |
590 | ||
591 | rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode, | |
f1e32681 | 592 | &oplock, &fid); |
25364138 PS |
593 | if (!rc && server->ops->close) |
594 | server->ops->close(xid, tcon, &fid); | |
d2c12719 | 595 | |
7ffec372 | 596 | cifs_put_tlink(tlink); |
6d5786a3 PS |
597 | out_free_xid: |
598 | free_xid(xid); | |
1da177e4 LT |
599 | return rc; |
600 | } | |
601 | ||
1a67aafb | 602 | int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode, |
5fdae1f6 | 603 | dev_t device_number) |
1da177e4 LT |
604 | { |
605 | int rc = -EPERM; | |
6d5786a3 | 606 | unsigned int xid; |
3d3ea8e6 | 607 | int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL; |
1da177e4 | 608 | struct cifs_sb_info *cifs_sb; |
7ffec372 | 609 | struct tcon_link *tlink; |
dd120671 | 610 | struct cifs_tcon *tcon; |
fa2989f4 | 611 | struct cifs_io_parms io_parms; |
1da177e4 | 612 | char *full_path = NULL; |
fb8c4b14 | 613 | struct inode *newinode = NULL; |
db8b631d | 614 | __u32 oplock = 0; |
d81b8a40 PS |
615 | struct cifs_fid fid; |
616 | struct cifs_open_parms oparms; | |
5d9ac7fd JL |
617 | FILE_ALL_INFO *buf = NULL; |
618 | unsigned int bytes_written; | |
619 | struct win_dev *pdev; | |
db8b631d | 620 | struct kvec iov[2]; |
1da177e4 LT |
621 | |
622 | if (!old_valid_dev(device_number)) | |
623 | return -EINVAL; | |
624 | ||
1da177e4 | 625 | cifs_sb = CIFS_SB(inode->i_sb); |
7ffec372 JL |
626 | tlink = cifs_sb_tlink(cifs_sb); |
627 | if (IS_ERR(tlink)) | |
628 | return PTR_ERR(tlink); | |
629 | ||
dd120671 | 630 | tcon = tlink_tcon(tlink); |
7ffec372 | 631 | |
6d5786a3 | 632 | xid = get_xid(); |
1da177e4 | 633 | |
1da177e4 | 634 | full_path = build_path_from_dentry(direntry); |
5d9ac7fd | 635 | if (full_path == NULL) { |
1da177e4 | 636 | rc = -ENOMEM; |
5d9ac7fd JL |
637 | goto mknod_out; |
638 | } | |
639 | ||
dd120671 | 640 | if (tcon->unix_ext) { |
4e1e7fb9 | 641 | struct cifs_unix_set_info_args args = { |
ce3b0f8d | 642 | .mode = mode & ~current_umask(), |
4e1e7fb9 JL |
643 | .ctime = NO_CHANGE_64, |
644 | .atime = NO_CHANGE_64, | |
645 | .mtime = NO_CHANGE_64, | |
646 | .device = device_number, | |
647 | }; | |
5fdae1f6 | 648 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
49418b2c EB |
649 | args.uid = current_fsuid(); |
650 | args.gid = current_fsgid(); | |
1da177e4 | 651 | } else { |
49418b2c EB |
652 | args.uid = INVALID_UID; /* no change */ |
653 | args.gid = INVALID_GID; /* no change */ | |
1da177e4 | 654 | } |
dd120671 | 655 | rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args, |
01ea95e3 | 656 | cifs_sb->local_nls, |
bc8ebdc4 | 657 | cifs_remap(cifs_sb)); |
5d9ac7fd JL |
658 | if (rc) |
659 | goto mknod_out; | |
1da177e4 | 660 | |
5d9ac7fd | 661 | rc = cifs_get_inode_info_unix(&newinode, full_path, |
5fdae1f6 | 662 | inode->i_sb, xid); |
eda3c029 | 663 | |
5d9ac7fd JL |
664 | if (rc == 0) |
665 | d_instantiate(direntry, newinode); | |
666 | goto mknod_out; | |
1da177e4 LT |
667 | } |
668 | ||
5d9ac7fd JL |
669 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) |
670 | goto mknod_out; | |
671 | ||
672 | ||
f96637be | 673 | cifs_dbg(FYI, "sfu compat create special file\n"); |
5d9ac7fd JL |
674 | |
675 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); | |
676 | if (buf == NULL) { | |
677 | kfree(full_path); | |
678 | rc = -ENOMEM; | |
6d5786a3 | 679 | free_xid(xid); |
5d9ac7fd JL |
680 | return rc; |
681 | } | |
682 | ||
3d3ea8e6 SP |
683 | if (backup_cred(cifs_sb)) |
684 | create_options |= CREATE_OPEN_BACKUP_INTENT; | |
685 | ||
d81b8a40 PS |
686 | oparms.tcon = tcon; |
687 | oparms.cifs_sb = cifs_sb; | |
688 | oparms.desired_access = GENERIC_WRITE; | |
689 | oparms.create_options = create_options; | |
690 | oparms.disposition = FILE_CREATE; | |
691 | oparms.path = full_path; | |
692 | oparms.fid = &fid; | |
693 | oparms.reconnect = false; | |
694 | ||
db8b631d SF |
695 | if (tcon->ses->server->oplocks) |
696 | oplock = REQ_OPLOCK; | |
697 | else | |
698 | oplock = 0; | |
699 | rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf); | |
5d9ac7fd JL |
700 | if (rc) |
701 | goto mknod_out; | |
702 | ||
dd120671 PS |
703 | /* |
704 | * BB Do not bother to decode buf since no local inode yet to put | |
705 | * timestamps in, but we can reuse it safely. | |
706 | */ | |
5d9ac7fd JL |
707 | |
708 | pdev = (struct win_dev *)buf; | |
fa2989f4 | 709 | io_parms.pid = current->tgid; |
dd120671 | 710 | io_parms.tcon = tcon; |
fa2989f4 PS |
711 | io_parms.offset = 0; |
712 | io_parms.length = sizeof(struct win_dev); | |
db8b631d SF |
713 | iov[1].iov_base = buf; |
714 | iov[1].iov_len = sizeof(struct win_dev); | |
5d9ac7fd JL |
715 | if (S_ISCHR(mode)) { |
716 | memcpy(pdev->type, "IntxCHR", 8); | |
dd120671 PS |
717 | pdev->major = cpu_to_le64(MAJOR(device_number)); |
718 | pdev->minor = cpu_to_le64(MINOR(device_number)); | |
db8b631d SF |
719 | rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, |
720 | &bytes_written, iov, 1); | |
5d9ac7fd JL |
721 | } else if (S_ISBLK(mode)) { |
722 | memcpy(pdev->type, "IntxBLK", 8); | |
dd120671 PS |
723 | pdev->major = cpu_to_le64(MAJOR(device_number)); |
724 | pdev->minor = cpu_to_le64(MINOR(device_number)); | |
db8b631d SF |
725 | rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, |
726 | &bytes_written, iov, 1); | |
5d9ac7fd | 727 | } /* else if (S_ISFIFO) */ |
db8b631d | 728 | tcon->ses->server->ops->close(xid, tcon, &fid); |
5d9ac7fd JL |
729 | d_drop(direntry); |
730 | ||
731 | /* FIXME: add code here to set EAs */ | |
732 | ||
733 | mknod_out: | |
d14537f1 | 734 | kfree(full_path); |
5d9ac7fd | 735 | kfree(buf); |
6d5786a3 | 736 | free_xid(xid); |
7ffec372 | 737 | cifs_put_tlink(tlink); |
1da177e4 LT |
738 | return rc; |
739 | } | |
740 | ||
1da177e4 | 741 | struct dentry * |
5fdae1f6 | 742 | cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, |
00cd8dd3 | 743 | unsigned int flags) |
1da177e4 | 744 | { |
6d5786a3 | 745 | unsigned int xid; |
1da177e4 LT |
746 | int rc = 0; /* to get around spurious gcc warning, set to zero here */ |
747 | struct cifs_sb_info *cifs_sb; | |
7ffec372 | 748 | struct tcon_link *tlink; |
96daf2b0 | 749 | struct cifs_tcon *pTcon; |
1da177e4 LT |
750 | struct inode *newInode = NULL; |
751 | char *full_path = NULL; | |
752 | ||
6d5786a3 | 753 | xid = get_xid(); |
1da177e4 | 754 | |
35c265e0 AV |
755 | cifs_dbg(FYI, "parent inode = 0x%p name is: %pd and dentry = 0x%p\n", |
756 | parent_dir_inode, direntry, direntry); | |
1da177e4 | 757 | |
1da177e4 LT |
758 | /* check whether path exists */ |
759 | ||
760 | cifs_sb = CIFS_SB(parent_dir_inode->i_sb); | |
7ffec372 JL |
761 | tlink = cifs_sb_tlink(cifs_sb); |
762 | if (IS_ERR(tlink)) { | |
6d5786a3 | 763 | free_xid(xid); |
7ffec372 JL |
764 | return (struct dentry *)tlink; |
765 | } | |
766 | pTcon = tlink_tcon(tlink); | |
1da177e4 | 767 | |
d2c12719 MS |
768 | rc = check_name(direntry); |
769 | if (rc) | |
7ffec372 | 770 | goto lookup_out; |
5ddf1e0f | 771 | |
1da177e4 LT |
772 | /* can not grab the rename sem here since it would |
773 | deadlock in the cases (beginning of sys_rename itself) | |
774 | in which we already have the sb rename sem */ | |
775 | full_path = build_path_from_dentry(direntry); | |
5fdae1f6 | 776 | if (full_path == NULL) { |
7ffec372 JL |
777 | rc = -ENOMEM; |
778 | goto lookup_out; | |
1da177e4 LT |
779 | } |
780 | ||
2b0143b5 | 781 | if (d_really_is_positive(direntry)) { |
f96637be | 782 | cifs_dbg(FYI, "non-NULL inode in lookup\n"); |
1da177e4 | 783 | } else { |
f96637be | 784 | cifs_dbg(FYI, "NULL inode in lookup\n"); |
1da177e4 | 785 | } |
f96637be | 786 | cifs_dbg(FYI, "Full path: %s inode = 0x%p\n", |
2b0143b5 | 787 | full_path, d_inode(direntry)); |
1da177e4 | 788 | |
a6ce4932 | 789 | if (pTcon->unix_ext) { |
d2c12719 MS |
790 | rc = cifs_get_inode_info_unix(&newInode, full_path, |
791 | parent_dir_inode->i_sb, xid); | |
792 | } else { | |
1da177e4 | 793 | rc = cifs_get_inode_info(&newInode, full_path, NULL, |
a6ce4932 | 794 | parent_dir_inode->i_sb, xid, NULL); |
d2c12719 | 795 | } |
1da177e4 LT |
796 | |
797 | if ((rc == 0) && (newInode != NULL)) { | |
1da177e4 | 798 | d_add(direntry, newInode); |
5fdae1f6 | 799 | /* since paths are not looked up by component - the parent |
3abb9272 | 800 | directories are presumed to be good here */ |
1da177e4 LT |
801 | renew_parental_timestamps(direntry); |
802 | ||
803 | } else if (rc == -ENOENT) { | |
804 | rc = 0; | |
a00be0e3 | 805 | cifs_set_time(direntry, jiffies); |
1da177e4 | 806 | d_add(direntry, NULL); |
5fdae1f6 SF |
807 | /* if it was once a directory (but how can we tell?) we could do |
808 | shrink_dcache_parent(direntry); */ | |
ed2b9170 | 809 | } else if (rc != -EACCES) { |
a8582159 | 810 | cifs_dbg(FYI, "Unexpected lookup error %d\n", rc); |
ed2b9170 SF |
811 | /* We special case check for Access Denied - since that |
812 | is a common return code */ | |
1da177e4 LT |
813 | } |
814 | ||
2422f676 | 815 | lookup_out: |
d14537f1 | 816 | kfree(full_path); |
7ffec372 | 817 | cifs_put_tlink(tlink); |
6d5786a3 | 818 | free_xid(xid); |
1da177e4 LT |
819 | return ERR_PTR(rc); |
820 | } | |
821 | ||
1da177e4 | 822 | static int |
0b728e19 | 823 | cifs_d_revalidate(struct dentry *direntry, unsigned int flags) |
1da177e4 | 824 | { |
0b728e19 | 825 | if (flags & LOOKUP_RCU) |
34286d66 NP |
826 | return -ECHILD; |
827 | ||
2b0143b5 | 828 | if (d_really_is_positive(direntry)) { |
df2cf170 | 829 | if (cifs_revalidate_dentry(direntry)) |
1da177e4 | 830 | return 0; |
ad4778fb GF |
831 | else { |
832 | /* | |
936ad909 IK |
833 | * If the inode wasn't known to be a dfs entry when |
834 | * the dentry was instantiated, such as when created | |
835 | * via ->readdir(), it needs to be set now since the | |
836 | * attributes will have been updated by | |
837 | * cifs_revalidate_dentry(). | |
ad4778fb | 838 | */ |
2b0143b5 | 839 | if (IS_AUTOMOUNT(d_inode(direntry)) && |
936ad909 IK |
840 | !(direntry->d_flags & DCACHE_NEED_AUTOMOUNT)) { |
841 | spin_lock(&direntry->d_lock); | |
842 | direntry->d_flags |= DCACHE_NEED_AUTOMOUNT; | |
843 | spin_unlock(&direntry->d_lock); | |
844 | } | |
845 | ||
262f86ad | 846 | return 1; |
ad4778fb | 847 | } |
1da177e4 LT |
848 | } |
849 | ||
262f86ad NP |
850 | /* |
851 | * This may be nfsd (or something), anyway, we can't see the | |
852 | * intent of this. So, since this can be for creation, drop it. | |
853 | */ | |
0b728e19 | 854 | if (!flags) |
262f86ad NP |
855 | return 0; |
856 | ||
857 | /* | |
858 | * Drop the negative dentry, in order to make sure to use the | |
859 | * case sensitive name which is specified by user if this is | |
860 | * for creation. | |
861 | */ | |
0b728e19 | 862 | if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET)) |
407938e7 | 863 | return 0; |
262f86ad | 864 | |
a00be0e3 | 865 | if (time_after(jiffies, cifs_get_time(direntry) + HZ) || !lookupCacheEnabled) |
262f86ad NP |
866 | return 0; |
867 | ||
868 | return 1; | |
1da177e4 LT |
869 | } |
870 | ||
871 | /* static int cifs_d_delete(struct dentry *direntry) | |
872 | { | |
873 | int rc = 0; | |
874 | ||
35c265e0 | 875 | cifs_dbg(FYI, "In cifs d_delete, name = %pd\n", direntry); |
1da177e4 LT |
876 | |
877 | return rc; | |
878 | } */ | |
879 | ||
4fd03e84 | 880 | const struct dentry_operations cifs_dentry_ops = { |
1da177e4 | 881 | .d_revalidate = cifs_d_revalidate, |
01c64fea | 882 | .d_automount = cifs_dfs_d_automount, |
5fdae1f6 | 883 | /* d_delete: cifs_d_delete, */ /* not needed except for debugging */ |
1da177e4 | 884 | }; |
b92327fe | 885 | |
da53be12 | 886 | static int cifs_ci_hash(const struct dentry *dentry, struct qstr *q) |
b92327fe | 887 | { |
b1e6a015 | 888 | struct nls_table *codepage = CIFS_SB(dentry->d_sb)->local_nls; |
b92327fe | 889 | unsigned long hash; |
ec71e0e1 JL |
890 | wchar_t c; |
891 | int i, charlen; | |
b92327fe | 892 | |
8387ff25 | 893 | hash = init_name_hash(dentry); |
ec71e0e1 JL |
894 | for (i = 0; i < q->len; i += charlen) { |
895 | charlen = codepage->char2uni(&q->name[i], q->len - i, &c); | |
896 | /* error out if we can't convert the character */ | |
897 | if (unlikely(charlen < 0)) | |
898 | return charlen; | |
899 | hash = partial_name_hash(cifs_toupper(c), hash); | |
900 | } | |
b92327fe SF |
901 | q->hash = end_name_hash(hash); |
902 | ||
903 | return 0; | |
904 | } | |
905 | ||
6fa67e70 | 906 | static int cifs_ci_compare(const struct dentry *dentry, |
621e155a | 907 | unsigned int len, const char *str, const struct qstr *name) |
b92327fe | 908 | { |
d3fe1985 | 909 | struct nls_table *codepage = CIFS_SB(dentry->d_sb)->local_nls; |
ec71e0e1 JL |
910 | wchar_t c1, c2; |
911 | int i, l1, l2; | |
b92327fe | 912 | |
ec71e0e1 JL |
913 | /* |
914 | * We make the assumption here that uppercase characters in the local | |
915 | * codepage are always the same length as their lowercase counterparts. | |
916 | * | |
917 | * If that's ever not the case, then this will fail to match it. | |
918 | */ | |
919 | if (name->len != len) | |
920 | return 1; | |
921 | ||
922 | for (i = 0; i < len; i += l1) { | |
923 | /* Convert characters in both strings to UTF-16. */ | |
924 | l1 = codepage->char2uni(&str[i], len - i, &c1); | |
925 | l2 = codepage->char2uni(&name->name[i], name->len - i, &c2); | |
926 | ||
927 | /* | |
928 | * If we can't convert either character, just declare it to | |
929 | * be 1 byte long and compare the original byte. | |
930 | */ | |
931 | if (unlikely(l1 < 0 && l2 < 0)) { | |
932 | if (str[i] != name->name[i]) | |
933 | return 1; | |
934 | l1 = 1; | |
935 | continue; | |
936 | } | |
937 | ||
938 | /* | |
939 | * Here, we again ass|u|me that upper/lowercase versions of | |
940 | * a character are the same length in the local NLS. | |
941 | */ | |
942 | if (l1 != l2) | |
943 | return 1; | |
944 | ||
945 | /* Now compare uppercase versions of these characters */ | |
946 | if (cifs_toupper(c1) != cifs_toupper(c2)) | |
947 | return 1; | |
948 | } | |
949 | ||
950 | return 0; | |
b92327fe SF |
951 | } |
952 | ||
4fd03e84 | 953 | const struct dentry_operations cifs_ci_dentry_ops = { |
b92327fe SF |
954 | .d_revalidate = cifs_d_revalidate, |
955 | .d_hash = cifs_ci_hash, | |
956 | .d_compare = cifs_ci_compare, | |
01c64fea | 957 | .d_automount = cifs_dfs_d_automount, |
b92327fe | 958 | }; |