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Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git
[linux.git] / fs / cifs / inode.c
CommitLineData
1da177e4
LT		 1/*
2 * fs/cifs/inode.c
3 *
4 * Copyright (C) International Business Machines Corp., 2002,2005
5 * Author(s): Steve French ([email protected])
6 *
7 * This library is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU Lesser General Public License as published
9 * by the Free Software Foundation; either version 2.1 of the License, or
10 * (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
15 * the GNU Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21#include <linux/fs.h>
22#include <linux/buffer_head.h>
23#include <linux/stat.h>
24#include <linux/pagemap.h>
25#include <asm/div64.h>
26#include "cifsfs.h"
27#include "cifspdu.h"
28#include "cifsglob.h"
29#include "cifsproto.h"
30#include "cifs_debug.h"
31#include "cifs_fs_sb.h"
32
33int cifs_get_inode_info_unix(struct inode **pinode,
34 const unsigned char *search_path, struct super_block *sb, int xid)
35{
36 int rc = 0;
37 FILE_UNIX_BASIC_INFO findData;
38 struct cifsTconInfo *pTcon;
39 struct inode *inode;
40 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
41 char *tmp_path;
42
43 pTcon = cifs_sb->tcon;
44 cFYI(1, (" Getting info on %s ", search_path));
45 /* could have done a find first instead but this returns more info */
46 rc = CIFSSMBUnixQPathInfo(xid, pTcon, search_path, &findData,
737b758c
SF		 47 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
48 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 49/* dump_mem("\nUnixQPathInfo return data", &findData,
50 sizeof(findData)); */
51 if (rc) {
52 if (rc == -EREMOTE) {
53 tmp_path =
54 kmalloc(strnlen(pTcon->treeName,
55 MAX_TREE_SIZE + 1) +
56 strnlen(search_path, MAX_PATHCONF) + 1,
57 GFP_KERNEL);
58 if (tmp_path == NULL) {
59 return -ENOMEM;
60 }
61 /* have to skip first of the double backslash of
62 UNC name */
63 strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
64 strncat(tmp_path, search_path, MAX_PATHCONF);
65 rc = connect_to_dfs_path(xid, pTcon->ses,
66 /* treename + */ tmp_path,
737b758c
SF		 67 cifs_sb->local_nls,
68 cifs_sb->mnt_cifs_flags &
69 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 70 kfree(tmp_path);
71
72 /* BB fix up inode etc. */
73 } else if (rc) {
74 return rc;
75 }
76 } else {
77 struct cifsInodeInfo *cifsInfo;
78 __u32 type = le32_to_cpu(findData.Type);
79 __u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes);
80 __u64 end_of_file = le64_to_cpu(findData.EndOfFile);
81
82 /* get new inode */
83 if (*pinode == NULL) {
84 *pinode = new_inode(sb);
d0d2f2df 85 if (*pinode == NULL)
1da177e4
LT		 86 return -ENOMEM;
87 /* Is an i_ino of zero legal? */
88 /* Are there sanity checks we can use to ensure that
89 the server is really filling in that field? */
d0d2f2df 90 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
1da177e4
LT		 91 (*pinode)->i_ino =
92 (unsigned long)findData.UniqueId;
93 } /* note ino incremented to unique num in new_inode */
94 insert_inode_hash(*pinode);
95 }
96
97 inode = *pinode;
98 cifsInfo = CIFS_I(inode);
99
100 cFYI(1, (" Old time %ld ", cifsInfo->time));
101 cifsInfo->time = jiffies;
102 cFYI(1, (" New time %ld ", cifsInfo->time));
103 /* this is ok to set on every inode revalidate */
104 atomic_set(&cifsInfo->inUse,1);
105
106 inode->i_atime =
107 cifs_NTtimeToUnix(le64_to_cpu(findData.LastAccessTime));
108 inode->i_mtime =
109 cifs_NTtimeToUnix(le64_to_cpu
110 (findData.LastModificationTime));
111 inode->i_ctime =
112 cifs_NTtimeToUnix(le64_to_cpu(findData.LastStatusChange));
113 inode->i_mode = le64_to_cpu(findData.Permissions);
114 if (type == UNIX_FILE) {
115 inode->i_mode |= S_IFREG;
116 } else if (type == UNIX_SYMLINK) {
117 inode->i_mode |= S_IFLNK;
118 } else if (type == UNIX_DIR) {
119 inode->i_mode |= S_IFDIR;
120 } else if (type == UNIX_CHARDEV) {
121 inode->i_mode |= S_IFCHR;
122 inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
123 le64_to_cpu(findData.DevMinor) & MINORMASK);
124 } else if (type == UNIX_BLOCKDEV) {
125 inode->i_mode |= S_IFBLK;
126 inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
127 le64_to_cpu(findData.DevMinor) & MINORMASK);
128 } else if (type == UNIX_FIFO) {
129 inode->i_mode |= S_IFIFO;
130 } else if (type == UNIX_SOCKET) {
131 inode->i_mode |= S_IFSOCK;
132 }
133 inode->i_uid = le64_to_cpu(findData.Uid);
134 inode->i_gid = le64_to_cpu(findData.Gid);
135 inode->i_nlink = le64_to_cpu(findData.Nlinks);
136
d0d2f2df 137 if (is_size_safe_to_change(cifsInfo)) {
1da177e4
LT		 138 /* can not safely change the file size here if the
139 client is writing to it due to potential races */
140
141 i_size_write(inode, end_of_file);
142
143 /* blksize needs to be multiple of two. So safer to default to
144 blksize and blkbits set in superblock so 2**blkbits and blksize
145 will match rather than setting to:
146 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
147
148 /* This seems incredibly stupid but it turns out that i_blocks
149 is not related to (i_size / i_blksize), instead 512 byte size
150 is required for calculating num blocks */
151
152 /* 512 bytes (2**9) is the fake blocksize that must be used */
153 /* for this calculation */
154 inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
155 }
156
157 if (num_of_bytes < end_of_file)
8b94bcb9 158 cFYI(1, ("allocation size less than end of file"));
1da177e4
LT		 159 cFYI(1,
160 ("Size %ld and blocks %ld",
161 (unsigned long) inode->i_size, inode->i_blocks));
162 if (S_ISREG(inode->i_mode)) {
8b94bcb9 163 cFYI(1, ("File inode"));
1da177e4 164 inode->i_op = &cifs_file_inode_ops;
8b94bcb9
SF		 165 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
166 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
167 inode->i_fop =
168 &cifs_file_direct_nobrl_ops;
169 else
170 inode->i_fop = &cifs_file_direct_ops;
171 } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
172 inode->i_fop = &cifs_file_nobrl_ops;
173 else /* not direct, send byte range locks */
1da177e4 174 inode->i_fop = &cifs_file_ops;
8b94bcb9 175
1da177e4 176 inode->i_data.a_ops = &cifs_addr_ops;
bfa0d75a
SF		 177 /* check if server can support readpages */
178 if(pTcon->ses->server->maxBuf <
179 4096 + MAX_CIFS_HDR_SIZE)
180 inode->i_data.a_ops->readpages = NULL;
1da177e4 181 } else if (S_ISDIR(inode->i_mode)) {
8b94bcb9 182 cFYI(1, ("Directory inode"));
1da177e4
LT		 183 inode->i_op = &cifs_dir_inode_ops;
184 inode->i_fop = &cifs_dir_ops;
185 } else if (S_ISLNK(inode->i_mode)) {
8b94bcb9 186 cFYI(1, ("Symbolic Link inode"));
1da177e4
LT		 187 inode->i_op = &cifs_symlink_inode_ops;
188 /* tmp_inode->i_fop = */ /* do not need to set to anything */
189 } else {
8b94bcb9 190 cFYI(1, ("Init special inode"));
1da177e4
LT		 191 init_special_inode(inode, inode->i_mode,
192 inode->i_rdev);
193 }
194 }
195 return rc;
196}
197
198int cifs_get_inode_info(struct inode **pinode,
199 const unsigned char *search_path, FILE_ALL_INFO *pfindData,
200 struct super_block *sb, int xid)
201{
202 int rc = 0;
203 struct cifsTconInfo *pTcon;
204 struct inode *inode;
205 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
206 char *tmp_path;
207 char *buf = NULL;
208
209 pTcon = cifs_sb->tcon;
210 cFYI(1,("Getting info on %s ", search_path));
211
d0d2f2df
SF		 212 if ((pfindData == NULL) && (*pinode != NULL)) {
213 if (CIFS_I(*pinode)->clientCanCacheRead) {
1da177e4
LT		 214 cFYI(1,("No need to revalidate cached inode sizes"));
215 return rc;
216 }
217 }
218
219 /* if file info not passed in then get it from server */
d0d2f2df 220 if (pfindData == NULL) {
1da177e4 221 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
d0d2f2df 222 if (buf == NULL)
1da177e4
LT		 223 return -ENOMEM;
224 pfindData = (FILE_ALL_INFO *)buf;
225 /* could do find first instead but this returns more info */
226 rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData,
6b8edfe0 227 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
737b758c 228 CIFS_MOUNT_MAP_SPECIAL_CHR);
6b8edfe0
SF		 229 /* BB optimize code so we do not make the above call
230 when server claims no NT SMB support and the above call
231 failed at least once - set flag in tcon or mount */
232 if((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
233 rc = SMBQueryInformation(xid, pTcon, search_path,
234 pfindData, cifs_sb->local_nls,
235 cifs_sb->mnt_cifs_flags &
236 CIFS_MOUNT_MAP_SPECIAL_CHR);
237 }
238
1da177e4
LT		 239 }
240 /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
241 if (rc) {
242 if (rc == -EREMOTE) {
243 tmp_path =
244 kmalloc(strnlen
245 (pTcon->treeName,
246 MAX_TREE_SIZE + 1) +
247 strnlen(search_path, MAX_PATHCONF) + 1,
248 GFP_KERNEL);
249 if (tmp_path == NULL) {
250 kfree(buf);
251 return -ENOMEM;
252 }
253
254 strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
255 strncat(tmp_path, search_path, MAX_PATHCONF);
256 rc = connect_to_dfs_path(xid, pTcon->ses,
257 /* treename + */ tmp_path,
737b758c
SF		 258 cifs_sb->local_nls,
259 cifs_sb->mnt_cifs_flags &
260 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 261 kfree(tmp_path);
262 /* BB fix up inode etc. */
263 } else if (rc) {
264 kfree(buf);
265 return rc;
266 }
267 } else {
268 struct cifsInodeInfo *cifsInfo;
269 __u32 attr = le32_to_cpu(pfindData->Attributes);
270
271 /* get new inode */
272 if (*pinode == NULL) {
273 *pinode = new_inode(sb);
274 if (*pinode == NULL)
275 return -ENOMEM;
276 /* Is an i_ino of zero legal? Can we use that to check
277 if the server supports returning inode numbers? Are
278 there other sanity checks we can use to ensure that
279 the server is really filling in that field? */
280
281 /* We can not use the IndexNumber field by default from
282 Windows or Samba (in ALL_INFO buf) but we can request
283 it explicitly. It may not be unique presumably if
284 the server has multiple devices mounted under one
285 share */
286
287 /* There may be higher info levels that work but are
288 there Windows server or network appliances for which
289 IndexNumber field is not guaranteed unique? */
290
d0d2f2df 291 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM){
1da177e4
LT		 292 int rc1 = 0;
293 __u64 inode_num;
294
295 rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
296 search_path, &inode_num,
737b758c
SF		 297 cifs_sb->local_nls,
298 cifs_sb->mnt_cifs_flags &
299 CIFS_MOUNT_MAP_SPECIAL_CHR);
d0d2f2df 300 if (rc1) {
1da177e4
LT		 301 cFYI(1,("GetSrvInodeNum rc %d", rc1));
302 /* BB EOPNOSUPP disable SERVER_INUM? */
303 } else /* do we need cast or hash to ino? */
304 (*pinode)->i_ino = inode_num;
305 } /* else ino incremented to unique num in new_inode*/
1da177e4
LT		 306 insert_inode_hash(*pinode);
307 }
308 inode = *pinode;
309 cifsInfo = CIFS_I(inode);
310 cifsInfo->cifsAttrs = attr;
311 cFYI(1, (" Old time %ld ", cifsInfo->time));
312 cifsInfo->time = jiffies;
313 cFYI(1, (" New time %ld ", cifsInfo->time));
314
315 /* blksize needs to be multiple of two. So safer to default to
316 blksize and blkbits set in superblock so 2**blkbits and blksize
317 will match rather than setting to:
318 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
319
320 /* Linux can not store file creation time unfortunately so we ignore it */
321 inode->i_atime =
322 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
323 inode->i_mtime =
324 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
325 inode->i_ctime =
326 cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
327 cFYI(0, (" Attributes came in as 0x%x ", attr));
328
329 /* set default mode. will override for dirs below */
330 if (atomic_read(&cifsInfo->inUse) == 0)
331 /* new inode, can safely set these fields */
332 inode->i_mode = cifs_sb->mnt_file_mode;
333
334/* if (attr & ATTR_REPARSE) */
335 /* We no longer handle these as symlinks because we could not
336 follow them due to the absolute path with drive letter */
337 if (attr & ATTR_DIRECTORY) {
338 /* override default perms since we do not do byte range locking
339 on dirs */
340 inode->i_mode = cifs_sb->mnt_dir_mode;
341 inode->i_mode |= S_IFDIR;
eda3c029
SF		 342 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
343 (cifsInfo->cifsAttrs & ATTR_SYSTEM) &&
344 /* No need to le64 convert size of zero */
345 (pfindData->EndOfFile == 0)) {
346 inode->i_mode = cifs_sb->mnt_file_mode;
347 inode->i_mode |= S_IFIFO;
348/* BB Finish for SFU style symlinks and devies */
349/* } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
350 (cifsInfo->cifsAttrs & ATTR_SYSTEM) && ) */
351
1da177e4
LT		 352 } else {
353 inode->i_mode |= S_IFREG;
354 /* treat the dos attribute of read-only as read-only
355 mode e.g. 555 */
356 if (cifsInfo->cifsAttrs & ATTR_READONLY)
357 inode->i_mode &= ~(S_IWUGO);
358 /* BB add code here -
359 validate if device or weird share or device type? */
360 }
361 if (is_size_safe_to_change(cifsInfo)) {
362 /* can not safely change the file size here if the
363 client is writing to it due to potential races */
364 i_size_write(inode,le64_to_cpu(pfindData->EndOfFile));
365
366 /* 512 bytes (2**9) is the fake blocksize that must be
367 used for this calculation */
368 inode->i_blocks = (512 - 1 + le64_to_cpu(
369 pfindData->AllocationSize)) >> 9;
370 }
371
372 inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
373
374 /* BB fill in uid and gid here? with help from winbind?
375 or retrieve from NTFS stream extended attribute */
376 if (atomic_read(&cifsInfo->inUse) == 0) {
377 inode->i_uid = cifs_sb->mnt_uid;
378 inode->i_gid = cifs_sb->mnt_gid;
379 /* set so we do not keep refreshing these fields with
380 bad data after user has changed them in memory */
381 atomic_set(&cifsInfo->inUse,1);
382 }
383
384 if (S_ISREG(inode->i_mode)) {
385 cFYI(1, (" File inode "));
386 inode->i_op = &cifs_file_inode_ops;
8b94bcb9
SF		 387 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
388 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
389 inode->i_fop =
390 &cifs_file_direct_nobrl_ops;
391 else
392 inode->i_fop = &cifs_file_direct_ops;
393 } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
394 inode->i_fop = &cifs_file_nobrl_ops;
395 else /* not direct, send byte range locks */
1da177e4 396 inode->i_fop = &cifs_file_ops;
8b94bcb9 397
1da177e4 398 inode->i_data.a_ops = &cifs_addr_ops;
bfa0d75a
SF		 399 if(pTcon->ses->server->maxBuf <
400 4096 + MAX_CIFS_HDR_SIZE)
401 inode->i_data.a_ops->readpages = NULL;
1da177e4
LT		 402 } else if (S_ISDIR(inode->i_mode)) {
403 cFYI(1, (" Directory inode "));
404 inode->i_op = &cifs_dir_inode_ops;
405 inode->i_fop = &cifs_dir_ops;
406 } else if (S_ISLNK(inode->i_mode)) {
407 cFYI(1, (" Symbolic Link inode "));
408 inode->i_op = &cifs_symlink_inode_ops;
409 } else {
410 init_special_inode(inode, inode->i_mode,
411 inode->i_rdev);
412 }
413 }
414 kfree(buf);
415 return rc;
416}
417
418/* gets root inode */
419void cifs_read_inode(struct inode *inode)
420{
421 int xid;
422 struct cifs_sb_info *cifs_sb;
423
424 cifs_sb = CIFS_SB(inode->i_sb);
425 xid = GetXid();
426 if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
427 cifs_get_inode_info_unix(&inode, "", inode->i_sb,xid);
428 else
429 cifs_get_inode_info(&inode, "", NULL, inode->i_sb,xid);
430 /* can not call macro FreeXid here since in a void func */
431 _FreeXid(xid);
432}
433
434int cifs_unlink(struct inode *inode, struct dentry *direntry)
435{
436 int rc = 0;
437 int xid;
438 struct cifs_sb_info *cifs_sb;
439 struct cifsTconInfo *pTcon;
440 char *full_path = NULL;
441 struct cifsInodeInfo *cifsInode;
442 FILE_BASIC_INFO *pinfo_buf;
443
444 cFYI(1, (" cifs_unlink, inode = 0x%p with ", inode));
445
446 xid = GetXid();
447
448 cifs_sb = CIFS_SB(inode->i_sb);
449 pTcon = cifs_sb->tcon;
450
451 /* Unlink can be called from rename so we can not grab the sem here
452 since we deadlock otherwise */
453/* down(&direntry->d_sb->s_vfs_rename_sem);*/
7f57356b 454 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 455/* up(&direntry->d_sb->s_vfs_rename_sem);*/
456 if (full_path == NULL) {
457 FreeXid(xid);
458 return -ENOMEM;
459 }
737b758c
SF		 460 rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
461 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 462
463 if (!rc) {
d0d2f2df 464 if (direntry->d_inode)
b2aeb9d5 465 direntry->d_inode->i_nlink--;
1da177e4
LT		 466 } else if (rc == -ENOENT) {
467 d_drop(direntry);
468 } else if (rc == -ETXTBSY) {
469 int oplock = FALSE;
470 __u16 netfid;
471
472 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
473 CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
737b758c
SF		 474 &netfid, &oplock, NULL, cifs_sb->local_nls,
475 cifs_sb->mnt_cifs_flags &
476 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 477 if (rc==0) {
478 CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
737b758c
SF		 479 cifs_sb->local_nls,
480 cifs_sb->mnt_cifs_flags &
481 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 482 CIFSSMBClose(xid, pTcon, netfid);
d0d2f2df 483 if (direntry->d_inode)
b2aeb9d5 484 direntry->d_inode->i_nlink--;
1da177e4
LT		 485 }
486 } else if (rc == -EACCES) {
487 /* try only if r/o attribute set in local lookup data? */
488 pinfo_buf = kmalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
489 if (pinfo_buf) {
490 memset(pinfo_buf, 0, sizeof(FILE_BASIC_INFO));
491 /* ATTRS set to normal clears r/o bit */
492 pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
493 if (!(pTcon->ses->flags & CIFS_SES_NT4))
494 rc = CIFSSMBSetTimes(xid, pTcon, full_path,
495 pinfo_buf,
737b758c
SF		 496 cifs_sb->local_nls,
497 cifs_sb->mnt_cifs_flags &
498 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 499 else
500 rc = -EOPNOTSUPP;
501
502 if (rc == -EOPNOTSUPP) {
503 int oplock = FALSE;
504 __u16 netfid;
505 /* rc = CIFSSMBSetAttrLegacy(xid, pTcon,
506 full_path,
507 (__u16)ATTR_NORMAL,
508 cifs_sb->local_nls);
509 For some strange reason it seems that NT4 eats the
510 old setattr call without actually setting the
511 attributes so on to the third attempted workaround
512 */
513
514 /* BB could scan to see if we already have it open
515 and pass in pid of opener to function */
516 rc = CIFSSMBOpen(xid, pTcon, full_path,
517 FILE_OPEN, SYNCHRONIZE |
518 FILE_WRITE_ATTRIBUTES, 0,
519 &netfid, &oplock, NULL,
737b758c
SF		 520 cifs_sb->local_nls,
521 cifs_sb->mnt_cifs_flags &
522 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 523 if (rc==0) {
524 rc = CIFSSMBSetFileTimes(xid, pTcon,
525 pinfo_buf,
526 netfid);
527 CIFSSMBClose(xid, pTcon, netfid);
528 }
529 }
530 kfree(pinfo_buf);
531 }
532 if (rc==0) {
737b758c
SF		 533 rc = CIFSSMBDelFile(xid, pTcon, full_path,
534 cifs_sb->local_nls,
535 cifs_sb->mnt_cifs_flags &
536 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 537 if (!rc) {
d0d2f2df 538 if (direntry->d_inode)
b2aeb9d5 539 direntry->d_inode->i_nlink--;
1da177e4
LT		 540 } else if (rc == -ETXTBSY) {
541 int oplock = FALSE;
542 __u16 netfid;
543
544 rc = CIFSSMBOpen(xid, pTcon, full_path,
545 FILE_OPEN, DELETE,
546 CREATE_NOT_DIR |
547 CREATE_DELETE_ON_CLOSE,
548 &netfid, &oplock, NULL,
737b758c
SF		 549 cifs_sb->local_nls,
550 cifs_sb->mnt_cifs_flags &
551 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 552 if (rc==0) {
553 CIFSSMBRenameOpenFile(xid, pTcon,
554 netfid, NULL,
737b758c
SF		 555 cifs_sb->local_nls,
556 cifs_sb->mnt_cifs_flags &
557 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 558 CIFSSMBClose(xid, pTcon, netfid);
d0d2f2df 559 if (direntry->d_inode)
b2aeb9d5 560 direntry->d_inode->i_nlink--;
1da177e4
LT		 561 }
562 /* BB if rc = -ETXTBUSY goto the rename logic BB */
563 }
564 }
565 }
d0d2f2df 566 if (direntry->d_inode) {
b2aeb9d5
SF		 567 cifsInode = CIFS_I(direntry->d_inode);
568 cifsInode->time = 0; /* will force revalidate to get info
569 when needed */
570 direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
571 }
572 inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
1da177e4
LT		 573 cifsInode = CIFS_I(inode);
574 cifsInode->time = 0; /* force revalidate of dir as well */
575
576 kfree(full_path);
577 FreeXid(xid);
578 return rc;
579}
580
581int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
582{
583 int rc = 0;
584 int xid;
585 struct cifs_sb_info *cifs_sb;
586 struct cifsTconInfo *pTcon;
587 char *full_path = NULL;
588 struct inode *newinode = NULL;
589
590 cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p ", mode, inode));
591
592 xid = GetXid();
593
594 cifs_sb = CIFS_SB(inode->i_sb);
595 pTcon = cifs_sb->tcon;
596
597 down(&inode->i_sb->s_vfs_rename_sem);
7f57356b 598 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 599 up(&inode->i_sb->s_vfs_rename_sem);
600 if (full_path == NULL) {
601 FreeXid(xid);
602 return -ENOMEM;
603 }
604 /* BB add setting the equivalent of mode via CreateX w/ACLs */
737b758c
SF		 605 rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
606 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 607 if (rc) {
608 cFYI(1, ("cifs_mkdir returned 0x%x ", rc));
609 d_drop(direntry);
610 } else {
611 inode->i_nlink++;
612 if (pTcon->ses->capabilities & CAP_UNIX)
613 rc = cifs_get_inode_info_unix(&newinode, full_path,
614 inode->i_sb,xid);
615 else
616 rc = cifs_get_inode_info(&newinode, full_path, NULL,
617 inode->i_sb,xid);
618
b92327fe
SF		 619 if (pTcon->nocase)
620 direntry->d_op = &cifs_ci_dentry_ops;
621 else
622 direntry->d_op = &cifs_dentry_ops;
1da177e4
LT		 623 d_instantiate(direntry, newinode);
624 if (direntry->d_inode)
625 direntry->d_inode->i_nlink = 2;
626 if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
d0d2f2df 627 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1da177e4
LT		 628 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
629 mode,
630 (__u64)current->euid,
631 (__u64)current->egid,
632 0 /* dev_t */,
737b758c
SF		 633 cifs_sb->local_nls,
634 cifs_sb->mnt_cifs_flags &
635 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 636 } else {
637 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
638 mode, (__u64)-1,
639 (__u64)-1, 0 /* dev_t */,
737b758c
SF		 640 cifs_sb->local_nls,
641 cifs_sb->mnt_cifs_flags &
642 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 643 }
644 else {
645 /* BB to be implemented via Windows secrty descriptors
646 eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
647 -1, -1, local_nls); */
648 }
649 }
650 kfree(full_path);
651 FreeXid(xid);
652 return rc;
653}
654
655int cifs_rmdir(struct inode *inode, struct dentry *direntry)
656{
657 int rc = 0;
658 int xid;
659 struct cifs_sb_info *cifs_sb;
660 struct cifsTconInfo *pTcon;
661 char *full_path = NULL;
662 struct cifsInodeInfo *cifsInode;
663
664 cFYI(1, (" cifs_rmdir, inode = 0x%p with ", inode));
665
666 xid = GetXid();
667
668 cifs_sb = CIFS_SB(inode->i_sb);
669 pTcon = cifs_sb->tcon;
670
671 down(&inode->i_sb->s_vfs_rename_sem);
7f57356b 672 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 673 up(&inode->i_sb->s_vfs_rename_sem);
674 if (full_path == NULL) {
675 FreeXid(xid);
676 return -ENOMEM;
677 }
678
737b758c
SF		 679 rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
680 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 681
682 if (!rc) {
683 inode->i_nlink--;
684 i_size_write(direntry->d_inode,0);
685 direntry->d_inode->i_nlink = 0;
686 }
687
688 cifsInode = CIFS_I(direntry->d_inode);
689 cifsInode->time = 0; /* force revalidate to go get info when
690 needed */
691 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
692 current_fs_time(inode->i_sb);
693
694 kfree(full_path);
695 FreeXid(xid);
696 return rc;
697}
698
699int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
700 struct inode *target_inode, struct dentry *target_direntry)
701{
702 char *fromName;
703 char *toName;
704 struct cifs_sb_info *cifs_sb_source;
705 struct cifs_sb_info *cifs_sb_target;
706 struct cifsTconInfo *pTcon;
707 int xid;
708 int rc = 0;
709
710 xid = GetXid();
711
712 cifs_sb_target = CIFS_SB(target_inode->i_sb);
713 cifs_sb_source = CIFS_SB(source_inode->i_sb);
714 pTcon = cifs_sb_source->tcon;
715
716 if (pTcon != cifs_sb_target->tcon) {
717 FreeXid(xid);
718 return -EXDEV; /* BB actually could be allowed if same server,
719 but different share.
720 Might eventually add support for this */
721 }
722
723 /* we already have the rename sem so we do not need to grab it again
724 here to protect the path integrity */
7f57356b
SF		 725 fromName = build_path_from_dentry(source_direntry);
726 toName = build_path_from_dentry(target_direntry);
1da177e4
LT		 727 if ((fromName == NULL) || (toName == NULL)) {
728 rc = -ENOMEM;
729 goto cifs_rename_exit;
730 }
731
732 rc = CIFSSMBRename(xid, pTcon, fromName, toName,
737b758c
SF		 733 cifs_sb_source->local_nls,
734 cifs_sb_source->mnt_cifs_flags &
735 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 736 if (rc == -EEXIST) {
737 /* check if they are the same file because rename of hardlinked
738 files is a noop */
739 FILE_UNIX_BASIC_INFO *info_buf_source;
740 FILE_UNIX_BASIC_INFO *info_buf_target;
741
742 info_buf_source =
743 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
744 if (info_buf_source != NULL) {
745 info_buf_target = info_buf_source + 1;
746 rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
737b758c
SF		 747 info_buf_source, cifs_sb_source->local_nls,
748 cifs_sb_source->mnt_cifs_flags &
749 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 750 if (rc == 0) {
751 rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
752 info_buf_target,
737b758c
SF		 753 cifs_sb_target->local_nls,
754 /* remap based on source sb */
755 cifs_sb_source->mnt_cifs_flags &
756 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 757 }
758 if ((rc == 0) &&
759 (info_buf_source->UniqueId ==
760 info_buf_target->UniqueId)) {
761 /* do not rename since the files are hardlinked which
762 is a noop */
763 } else {
764 /* we either can not tell the files are hardlinked
765 (as with Windows servers) or files are not
766 hardlinked so delete the target manually before
767 renaming to follow POSIX rather than Windows
768 semantics */
769 cifs_unlink(target_inode, target_direntry);
770 rc = CIFSSMBRename(xid, pTcon, fromName,
771 toName,
737b758c
SF		 772 cifs_sb_source->local_nls,
773 cifs_sb_source->mnt_cifs_flags
774 & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 775 }
776 kfree(info_buf_source);
777 } /* if we can not get memory just leave rc as EEXIST */
778 }
779
780 if (rc) {
781 cFYI(1, ("rename rc %d", rc));
782 }
783
784 if ((rc == -EIO) || (rc == -EEXIST)) {
785 int oplock = FALSE;
786 __u16 netfid;
787
788 /* BB FIXME Is Generic Read correct for rename? */
789 /* if renaming directory - we should not say CREATE_NOT_DIR,
790 need to test renaming open directory, also GENERIC_READ
791 might not right be right access to request */
792 rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
793 CREATE_NOT_DIR, &netfid, &oplock, NULL,
737b758c
SF		 794 cifs_sb_source->local_nls,
795 cifs_sb_source->mnt_cifs_flags &
796 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 797 if (rc==0) {
798 CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
737b758c
SF		 799 cifs_sb_source->local_nls,
800 cifs_sb_source->mnt_cifs_flags &
801 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 802 CIFSSMBClose(xid, pTcon, netfid);
803 }
804 }
805
806cifs_rename_exit:
807 kfree(fromName);
808 kfree(toName);
809 FreeXid(xid);
810 return rc;
811}
812
813int cifs_revalidate(struct dentry *direntry)
814{
815 int xid;
816 int rc = 0;
817 char *full_path;
818 struct cifs_sb_info *cifs_sb;
819 struct cifsInodeInfo *cifsInode;
820 loff_t local_size;
821 struct timespec local_mtime;
822 int invalidate_inode = FALSE;
823
824 if (direntry->d_inode == NULL)
825 return -ENOENT;
826
827 cifsInode = CIFS_I(direntry->d_inode);
828
829 if (cifsInode == NULL)
830 return -ENOENT;
831
832 /* no sense revalidating inode info on file that no one can write */
833 if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
834 return rc;
835
836 xid = GetXid();
837
838 cifs_sb = CIFS_SB(direntry->d_sb);
839
840 /* can not safely grab the rename sem here if rename calls revalidate
841 since that would deadlock */
7f57356b 842 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 843 if (full_path == NULL) {
844 FreeXid(xid);
845 return -ENOMEM;
846 }
847 cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
848 "jiffies %ld", full_path, direntry->d_inode,
849 direntry->d_inode->i_count.counter, direntry,
850 direntry->d_time, jiffies));
851
852 if (cifsInode->time == 0) {
853 /* was set to zero previously to force revalidate */
854 } else if (time_before(jiffies, cifsInode->time + HZ) &&
855 lookupCacheEnabled) {
856 if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
857 (direntry->d_inode->i_nlink == 1)) {
858 kfree(full_path);
859 FreeXid(xid);
860 return rc;
861 } else {
862 cFYI(1, ("Have to revalidate file due to hardlinks"));
863 }
864 }
865
866 /* save mtime and size */
867 local_mtime = direntry->d_inode->i_mtime;
868 local_size = direntry->d_inode->i_size;
869
870 if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) {
871 rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
872 direntry->d_sb,xid);
873 if (rc) {
874 cFYI(1, ("error on getting revalidate info %d", rc));
875/* if (rc != -ENOENT)
876 rc = 0; */ /* BB should we cache info on
877 certain errors? */
878 }
879 } else {
880 rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
881 direntry->d_sb,xid);
882 if (rc) {
883 cFYI(1, ("error on getting revalidate info %d", rc));
884/* if (rc != -ENOENT)
885 rc = 0; */ /* BB should we cache info on
886 certain errors? */
887 }
888 }
889 /* should we remap certain errors, access denied?, to zero */
890
891 /* if not oplocked, we invalidate inode pages if mtime or file size
892 had changed on server */
893
894 if (timespec_equal(&local_mtime,&direntry->d_inode->i_mtime) &&
895 (local_size == direntry->d_inode->i_size)) {
896 cFYI(1, ("cifs_revalidate - inode unchanged"));
897 } else {
898 /* file may have changed on server */
899 if (cifsInode->clientCanCacheRead) {
900 /* no need to invalidate inode pages since we were the
901 only ones who could have modified the file and the
902 server copy is staler than ours */
903 } else {
904 invalidate_inode = TRUE;
905 }
906 }
907
908 /* can not grab this sem since kernel filesys locking documentation
909 indicates i_sem may be taken by the kernel on lookup and rename
910 which could deadlock if we grab the i_sem here as well */
911/* down(&direntry->d_inode->i_sem);*/
912 /* need to write out dirty pages here */
913 if (direntry->d_inode->i_mapping) {
914 /* do we need to lock inode until after invalidate completes
915 below? */
916 filemap_fdatawrite(direntry->d_inode->i_mapping);
917 }
918 if (invalidate_inode) {
919 if (direntry->d_inode->i_mapping)
920 filemap_fdatawait(direntry->d_inode->i_mapping);
921 /* may eventually have to do this for open files too */
922 if (list_empty(&(cifsInode->openFileList))) {
923 /* Has changed on server - flush read ahead pages */
924 cFYI(1, ("Invalidating read ahead data on "
925 "closed file"));
926 invalidate_remote_inode(direntry->d_inode);
927 }
928 }
929/* up(&direntry->d_inode->i_sem); */
930
931 kfree(full_path);
932 FreeXid(xid);
933 return rc;
934}
935
936int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
937 struct kstat *stat)
938{
939 int err = cifs_revalidate(dentry);
940 if (!err)
941 generic_fillattr(dentry->d_inode, stat);
942 return err;
943}
944
945static int cifs_truncate_page(struct address_space *mapping, loff_t from)
946{
947 pgoff_t index = from >> PAGE_CACHE_SHIFT;
948 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
949 struct page *page;
950 char *kaddr;
951 int rc = 0;
952
953 page = grab_cache_page(mapping, index);
954 if (!page)
955 return -ENOMEM;
956
957 kaddr = kmap_atomic(page, KM_USER0);
958 memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset);
959 flush_dcache_page(page);
960 kunmap_atomic(kaddr, KM_USER0);
961 unlock_page(page);
962 page_cache_release(page);
963 return rc;
964}
965
966int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
967{
968 int xid;
969 struct cifs_sb_info *cifs_sb;
970 struct cifsTconInfo *pTcon;
971 char *full_path = NULL;
972 int rc = -EACCES;
1da177e4
LT		 973 struct cifsFileInfo *open_file = NULL;
974 FILE_BASIC_INFO time_buf;
975 int set_time = FALSE;
976 __u64 mode = 0xFFFFFFFFFFFFFFFFULL;
977 __u64 uid = 0xFFFFFFFFFFFFFFFFULL;
978 __u64 gid = 0xFFFFFFFFFFFFFFFFULL;
979 struct cifsInodeInfo *cifsInode;
1da177e4
LT		 980
981 xid = GetXid();
982
983 cFYI(1, (" In cifs_setattr, name = %s attrs->iavalid 0x%x ",
984 direntry->d_name.name, attrs->ia_valid));
985 cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
986 pTcon = cifs_sb->tcon;
987
988 down(&direntry->d_sb->s_vfs_rename_sem);
7f57356b 989 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 990 up(&direntry->d_sb->s_vfs_rename_sem);
991 if (full_path == NULL) {
992 FreeXid(xid);
993 return -ENOMEM;
994 }
995 cifsInode = CIFS_I(direntry->d_inode);
996
997 /* BB check if we need to refresh inode from server now ? BB */
998
999 /* need to flush data before changing file size on server */
1000 filemap_fdatawrite(direntry->d_inode->i_mapping);
1001 filemap_fdatawait(direntry->d_inode->i_mapping);
1002
1003 if (attrs->ia_valid & ATTR_SIZE) {
1da177e4
LT		 1004 /* To avoid spurious oplock breaks from server, in the case of
1005 inodes that we already have open, avoid doing path based
1006 setting of file size if we can do it by handle.
1007 This keeps our caching token (oplock) and avoids timeouts
1008 when the local oplock break takes longer to flush
1009 writebehind data than the SMB timeout for the SetPathInfo
1010 request would allow */
6148a742
SF		 1011 open_file = find_writable_file(cifsInode);
1012 if (open_file) {
1013 __u16 nfid = open_file->netfid;
1014 __u32 npid = open_file->pid;
1015 rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
1016 nfid, npid, FALSE);
23e7dd7d 1017 atomic_dec(&open_file->wrtPending);
6148a742
SF		 1018 cFYI(1,("SetFSize for attrs rc = %d", rc));
1019 if(rc == -EINVAL) {
1020 int bytes_written;
1021 rc = CIFSSMBWrite(xid, pTcon,
1022 nfid, 0, attrs->ia_size,
1023 &bytes_written, NULL, NULL,
1024 1 /* 45 seconds */);
1025 cFYI(1,("Wrt seteof rc %d", rc));
1da177e4
LT		 1026 }
1027 }
1da177e4
LT		 1028 if (rc != 0) {
1029 /* Set file size by pathname rather than by handle
1030 either because no valid, writeable file handle for
1031 it was found or because there was an error setting
1032 it by handle */
1033 rc = CIFSSMBSetEOF(xid, pTcon, full_path,
1034 attrs->ia_size, FALSE,
737b758c
SF		 1035 cifs_sb->local_nls,
1036 cifs_sb->mnt_cifs_flags &
1037 CIFS_MOUNT_MAP_SPECIAL_CHR);
e30dcf3a
SF		 1038 cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
1039 if(rc == -EINVAL) {
1040 __u16 netfid;
1041 int oplock = FALSE;
1042
1043 rc = SMBLegacyOpen(xid, pTcon, full_path,
1044 FILE_OPEN,
1045 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1046 CREATE_NOT_DIR, &netfid, &oplock,
1047 NULL, cifs_sb->local_nls,
1048 cifs_sb->mnt_cifs_flags &
1049 CIFS_MOUNT_MAP_SPECIAL_CHR);
1050 if (rc==0) {
1051 int bytes_written;
1052 rc = CIFSSMBWrite(xid, pTcon,
1053 netfid, 0,
1054 attrs->ia_size,
1055 &bytes_written, NULL,
1056 NULL, 1 /* 45 sec */);
1057 cFYI(1,("wrt seteof rc %d",rc));
1058 CIFSSMBClose(xid, pTcon, netfid);
1059 }
1060
1061 }
1da177e4
LT		 1062 }
1063
1064 /* Server is ok setting allocation size implicitly - no need
1065 to call:
1066 CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE,
1067 cifs_sb->local_nls);
1068 */
1069
1070 if (rc == 0) {
1071 rc = vmtruncate(direntry->d_inode, attrs->ia_size);
1072 cifs_truncate_page(direntry->d_inode->i_mapping,
1073 direntry->d_inode->i_size);
e30dcf3a
SF		 1074 } else
1075 goto cifs_setattr_exit;
1da177e4
LT		 1076 }
1077 if (attrs->ia_valid & ATTR_UID) {
e30dcf3a 1078 cFYI(1, ("UID changed to %d", attrs->ia_uid));
1da177e4 1079 uid = attrs->ia_uid;
1da177e4
LT		 1080 }
1081 if (attrs->ia_valid & ATTR_GID) {
e30dcf3a 1082 cFYI(1, ("GID changed to %d", attrs->ia_gid));
1da177e4 1083 gid = attrs->ia_gid;
1da177e4
LT		 1084 }
1085
1086 time_buf.Attributes = 0;
1087 if (attrs->ia_valid & ATTR_MODE) {
e30dcf3a 1088 cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
1da177e4 1089 mode = attrs->ia_mode;
1da177e4
LT		 1090 }
1091
1092 if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX)
1093 && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
1094 rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
737b758c
SF		 1095 0 /* dev_t */, cifs_sb->local_nls,
1096 cifs_sb->mnt_cifs_flags &
1097 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1098 else if (attrs->ia_valid & ATTR_MODE) {
1099 if ((mode & S_IWUGO) == 0) /* not writeable */ {
1100 if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0)
1101 time_buf.Attributes =
1102 cpu_to_le32(cifsInode->cifsAttrs |
1103 ATTR_READONLY);
1104 } else if ((mode & S_IWUGO) == S_IWUGO) {
1105 if (cifsInode->cifsAttrs & ATTR_READONLY)
1106 time_buf.Attributes =
1107 cpu_to_le32(cifsInode->cifsAttrs &
1108 (~ATTR_READONLY));
1109 }
1110 /* BB to be implemented -
1111 via Windows security descriptors or streams */
1112 /* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid,
1113 cifs_sb->local_nls); */
1114 }
1115
1116 if (attrs->ia_valid & ATTR_ATIME) {
1117 set_time = TRUE;
1118 time_buf.LastAccessTime =
1119 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1120 } else
1121 time_buf.LastAccessTime = 0;
1122
1123 if (attrs->ia_valid & ATTR_MTIME) {
1124 set_time = TRUE;
1125 time_buf.LastWriteTime =
1126 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1127 } else
1128 time_buf.LastWriteTime = 0;
e30dcf3a
SF		 1129 /* Do not set ctime explicitly unless other time
1130 stamps are changed explicitly (i.e. by utime()
1131 since we would then have a mix of client and
1132 server times */
1133
1134 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
1da177e4 1135 set_time = TRUE;
e30dcf3a
SF		 1136 /* Although Samba throws this field away
1137 it may be useful to Windows - but we do
1138 not want to set ctime unless some other
1139 timestamp is changing */
1140 cFYI(1, ("CIFS - CTIME changed "));
1da177e4
LT		 1141 time_buf.ChangeTime =
1142 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1143 } else
1144 time_buf.ChangeTime = 0;
1145
1146 if (set_time || time_buf.Attributes) {
1da177e4
LT		 1147 time_buf.CreationTime = 0; /* do not change */
1148 /* In the future we should experiment - try setting timestamps
1149 via Handle (SetFileInfo) instead of by path */
1150 if (!(pTcon->ses->flags & CIFS_SES_NT4))
1151 rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
737b758c
SF		 1152 cifs_sb->local_nls,
1153 cifs_sb->mnt_cifs_flags &
1154 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1155 else
1156 rc = -EOPNOTSUPP;
1157
1158 if (rc == -EOPNOTSUPP) {
1159 int oplock = FALSE;
1160 __u16 netfid;
1161
1162 cFYI(1, ("calling SetFileInfo since SetPathInfo for "
1163 "times not supported by this server"));
1164 /* BB we could scan to see if we already have it open
1165 and pass in pid of opener to function */
1166 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
1167 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1168 CREATE_NOT_DIR, &netfid, &oplock,
737b758c
SF		 1169 NULL, cifs_sb->local_nls,
1170 cifs_sb->mnt_cifs_flags &
1171 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1172 if (rc==0) {
1173 rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
1174 netfid);
1175 CIFSSMBClose(xid, pTcon, netfid);
1176 } else {
1177 /* BB For even older servers we could convert time_buf
1178 into old DOS style which uses two second
1179 granularity */
1180
1181 /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
1182 &time_buf, cifs_sb->local_nls); */
1183 }
1184 }
e30dcf3a
SF		 1185 /* Even if error on time set, no sense failing the call if
1186 the server would set the time to a reasonable value anyway,
1187 and this check ensures that we are not being called from
1188 sys_utimes in which case we ought to fail the call back to
1189 the user when the server rejects the call */
1190 if((rc) && (attrs->ia_valid &&
1191 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
1192 rc = 0;
1da177e4
LT		 1193 }
1194
1195 /* do not need local check to inode_check_ok since the server does
1196 that */
1197 if (!rc)
1198 rc = inode_setattr(direntry->d_inode, attrs);
e30dcf3a 1199cifs_setattr_exit:
1da177e4
LT		 1200 kfree(full_path);
1201 FreeXid(xid);
1202 return rc;
1203}
1204
1205void cifs_delete_inode(struct inode *inode)
1206{
1207 cFYI(1, ("In cifs_delete_inode, inode = 0x%p ", inode));
1208 /* may have to add back in if and when safe distributed caching of
1209 directories added e.g. via FindNotify */
1210}
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