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[CIFS] prefixpath mounts to servers supporting posix paths used wrong slash
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / cifs / inode.c
CommitLineData
1da177e4
LT		 1/*
2 * fs/cifs/inode.c
3 *
2dd29d31 4 * Copyright (C) International Business Machines Corp., 2002,2007
1da177e4
LT		 5 * Author(s): Steve French (sfrench@us.ibm.com)
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>
1da177e4
LT		 22#include <linux/stat.h>
23#include <linux/pagemap.h>
24#include <asm/div64.h>
25#include "cifsfs.h"
26#include "cifspdu.h"
27#include "cifsglob.h"
28#include "cifsproto.h"
29#include "cifs_debug.h"
30#include "cifs_fs_sb.h"
31
32int cifs_get_inode_info_unix(struct inode **pinode,
33 const unsigned char *search_path, struct super_block *sb, int xid)
34{
35 int rc = 0;
36 FILE_UNIX_BASIC_INFO findData;
37 struct cifsTconInfo *pTcon;
38 struct inode *inode;
39 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
40 char *tmp_path;
41
42 pTcon = cifs_sb->tcon;
26a21b98 43 cFYI(1, ("Getting info on %s", search_path));
1da177e4
LT		 44 /* could have done a find first instead but this returns more info */
45 rc = CIFSSMBUnixQPathInfo(xid, pTcon, search_path, &findData,
737b758c
SF		 46 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
47 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 48/* dump_mem("\nUnixQPathInfo return data", &findData,
49 sizeof(findData)); */
50 if (rc) {
51 if (rc == -EREMOTE) {
52 tmp_path =
53 kmalloc(strnlen(pTcon->treeName,
54 MAX_TREE_SIZE + 1) +
55 strnlen(search_path, MAX_PATHCONF) + 1,
56 GFP_KERNEL);
57 if (tmp_path == NULL) {
58 return -ENOMEM;
59 }
60 /* have to skip first of the double backslash of
61 UNC name */
62 strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
63 strncat(tmp_path, search_path, MAX_PATHCONF);
64 rc = connect_to_dfs_path(xid, pTcon->ses,
65 /* treename + */ tmp_path,
737b758c
SF		 66 cifs_sb->local_nls,
67 cifs_sb->mnt_cifs_flags &
68 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 69 kfree(tmp_path);
70
71 /* BB fix up inode etc. */
72 } else if (rc) {
73 return rc;
74 }
75 } else {
76 struct cifsInodeInfo *cifsInfo;
77 __u32 type = le32_to_cpu(findData.Type);
78 __u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes);
79 __u64 end_of_file = le64_to_cpu(findData.EndOfFile);
80
81 /* get new inode */
82 if (*pinode == NULL) {
83 *pinode = new_inode(sb);
d0d2f2df 84 if (*pinode == NULL)
1da177e4
LT		 85 return -ENOMEM;
86 /* Is an i_ino of zero legal? */
87 /* Are there sanity checks we can use to ensure that
88 the server is really filling in that field? */
d0d2f2df 89 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
1da177e4
LT		 90 (*pinode)->i_ino =
91 (unsigned long)findData.UniqueId;
92 } /* note ino incremented to unique num in new_inode */
1b2b2126
SF		 93 if(sb->s_flags & MS_NOATIME)
94 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
95
1da177e4
LT		 96 insert_inode_hash(*pinode);
97 }
98
99 inode = *pinode;
100 cifsInfo = CIFS_I(inode);
101
26a21b98 102 cFYI(1, ("Old time %ld", cifsInfo->time));
1da177e4 103 cifsInfo->time = jiffies;
26a21b98 104 cFYI(1, ("New time %ld", cifsInfo->time));
1da177e4
LT		 105 /* this is ok to set on every inode revalidate */
106 atomic_set(&cifsInfo->inUse,1);
107
108 inode->i_atime =
109 cifs_NTtimeToUnix(le64_to_cpu(findData.LastAccessTime));
110 inode->i_mtime =
111 cifs_NTtimeToUnix(le64_to_cpu
112 (findData.LastModificationTime));
113 inode->i_ctime =
114 cifs_NTtimeToUnix(le64_to_cpu(findData.LastStatusChange));
115 inode->i_mode = le64_to_cpu(findData.Permissions);
3020a1f5
SF		 116 /* since we set the inode type below we need to mask off
117 to avoid strange results if bits set above */
118 inode->i_mode &= ~S_IFMT;
1da177e4
LT		 119 if (type == UNIX_FILE) {
120 inode->i_mode |= S_IFREG;
121 } else if (type == UNIX_SYMLINK) {
122 inode->i_mode |= S_IFLNK;
123 } else if (type == UNIX_DIR) {
124 inode->i_mode |= S_IFDIR;
125 } else if (type == UNIX_CHARDEV) {
126 inode->i_mode |= S_IFCHR;
127 inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
128 le64_to_cpu(findData.DevMinor) & MINORMASK);
129 } else if (type == UNIX_BLOCKDEV) {
130 inode->i_mode |= S_IFBLK;
131 inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
132 le64_to_cpu(findData.DevMinor) & MINORMASK);
133 } else if (type == UNIX_FIFO) {
134 inode->i_mode |= S_IFIFO;
135 } else if (type == UNIX_SOCKET) {
136 inode->i_mode |= S_IFSOCK;
3020a1f5
SF		 137 } else {
138 /* safest to call it a file if we do not know */
139 inode->i_mode |= S_IFREG;
140 cFYI(1,("unknown type %d",type));
1da177e4
LT		 141 }
142 inode->i_uid = le64_to_cpu(findData.Uid);
143 inode->i_gid = le64_to_cpu(findData.Gid);
144 inode->i_nlink = le64_to_cpu(findData.Nlinks);
145
3677db10 146 spin_lock(&inode->i_lock);
7ba52631 147 if (is_size_safe_to_change(cifsInfo, end_of_file)) {
1da177e4
LT		 148 /* can not safely change the file size here if the
149 client is writing to it due to potential races */
1da177e4
LT		 150 i_size_write(inode, end_of_file);
151
152 /* blksize needs to be multiple of two. So safer to default to
153 blksize and blkbits set in superblock so 2**blkbits and blksize
154 will match rather than setting to:
155 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
156
157 /* This seems incredibly stupid but it turns out that i_blocks
158 is not related to (i_size / i_blksize), instead 512 byte size
159 is required for calculating num blocks */
160
161 /* 512 bytes (2**9) is the fake blocksize that must be used */
162 /* for this calculation */
163 inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
164 }
3677db10 165 spin_unlock(&inode->i_lock);
1da177e4
LT		 166
167 if (num_of_bytes < end_of_file)
8b94bcb9 168 cFYI(1, ("allocation size less than end of file"));
5515eff8
AM		 169 cFYI(1, ("Size %ld and blocks %llu",
170 (unsigned long) inode->i_size,
171 (unsigned long long)inode->i_blocks));
1da177e4 172 if (S_ISREG(inode->i_mode)) {
8b94bcb9 173 cFYI(1, ("File inode"));
1da177e4 174 inode->i_op = &cifs_file_inode_ops;
8b94bcb9
SF		 175 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
176 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
177 inode->i_fop =
178 &cifs_file_direct_nobrl_ops;
179 else
180 inode->i_fop = &cifs_file_direct_ops;
181 } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
182 inode->i_fop = &cifs_file_nobrl_ops;
183 else /* not direct, send byte range locks */
1da177e4 184 inode->i_fop = &cifs_file_ops;
8b94bcb9 185
bfa0d75a
SF		 186 /* check if server can support readpages */
187 if(pTcon->ses->server->maxBuf <
273d81d6
DK		 188 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
189 inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
190 else
191 inode->i_data.a_ops = &cifs_addr_ops;
1da177e4 192 } else if (S_ISDIR(inode->i_mode)) {
8b94bcb9 193 cFYI(1, ("Directory inode"));
1da177e4
LT		 194 inode->i_op = &cifs_dir_inode_ops;
195 inode->i_fop = &cifs_dir_ops;
196 } else if (S_ISLNK(inode->i_mode)) {
8b94bcb9 197 cFYI(1, ("Symbolic Link inode"));
1da177e4
LT		 198 inode->i_op = &cifs_symlink_inode_ops;
199 /* tmp_inode->i_fop = */ /* do not need to set to anything */
200 } else {
8b94bcb9 201 cFYI(1, ("Init special inode"));
1da177e4
LT		 202 init_special_inode(inode, inode->i_mode,
203 inode->i_rdev);
204 }
205 }
206 return rc;
207}
208
d6e2f2a4
SF		 209static int decode_sfu_inode(struct inode * inode, __u64 size,
210 const unsigned char *path,
211 struct cifs_sb_info *cifs_sb, int xid)
212{
213 int rc;
214 int oplock = FALSE;
215 __u16 netfid;
216 struct cifsTconInfo *pTcon = cifs_sb->tcon;
86c96b4b 217 char buf[24];
d6e2f2a4
SF		 218 unsigned int bytes_read;
219 char * pbuf;
220
221 pbuf = buf;
222
223 if(size == 0) {
224 inode->i_mode |= S_IFIFO;
225 return 0;
226 } else if (size < 8) {
227 return -EINVAL; /* EOPNOTSUPP? */
228 }
229
230 rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
231 CREATE_NOT_DIR, &netfid, &oplock, NULL,
232 cifs_sb->local_nls,
233 cifs_sb->mnt_cifs_flags &
234 CIFS_MOUNT_MAP_SPECIAL_CHR);
235 if (rc==0) {
ec637e3f 236 int buf_type = CIFS_NO_BUFFER;
d6e2f2a4
SF		 237 /* Read header */
238 rc = CIFSSMBRead(xid, pTcon,
239 netfid,
86c96b4b 240 24 /* length */, 0 /* offset */,
ec637e3f 241 &bytes_read, &pbuf, &buf_type);
86c96b4b 242 if((rc == 0) && (bytes_read >= 8)) {
9e294f1c
SF		 243 if(memcmp("IntxBLK", pbuf, 8) == 0) {
244 cFYI(1,("Block device"));
3020a1f5 245 inode->i_mode |= S_IFBLK;
86c96b4b
SF		 246 if(bytes_read == 24) {
247 /* we have enough to decode dev num */
248 __u64 mjr; /* major */
249 __u64 mnr; /* minor */
250 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
251 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
252 inode->i_rdev = MKDEV(mjr, mnr);
253 }
9e294f1c
SF		 254 } else if(memcmp("IntxCHR", pbuf, 8) == 0) {
255 cFYI(1,("Char device"));
3020a1f5 256 inode->i_mode |= S_IFCHR;
86c96b4b
SF		 257 if(bytes_read == 24) {
258 /* we have enough to decode dev num */
259 __u64 mjr; /* major */
260 __u64 mnr; /* minor */
261 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
262 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
263 inode->i_rdev = MKDEV(mjr, mnr);
264 }
9e294f1c
SF		 265 } else if(memcmp("IntxLNK", pbuf, 7) == 0) {
266 cFYI(1,("Symlink"));
3020a1f5 267 inode->i_mode |= S_IFLNK;
86c96b4b
SF		 268 } else {
269 inode->i_mode |= S_IFREG; /* file? */
270 rc = -EOPNOTSUPP;
271 }
3020a1f5
SF		 272 } else {
273 inode->i_mode |= S_IFREG; /* then it is a file */
274 rc = -EOPNOTSUPP; /* or some unknown SFU type */
ec637e3f 275 }
d6e2f2a4 276 CIFSSMBClose(xid, pTcon, netfid);
d6e2f2a4
SF		 277 }
278 return rc;
279
280}
281
9e294f1c
SF		 282#define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
283
284static int get_sfu_uid_mode(struct inode * inode,
285 const unsigned char *path,
286 struct cifs_sb_info *cifs_sb, int xid)
287{
3020a1f5 288#ifdef CONFIG_CIFS_XATTR
9e294f1c
SF		 289 ssize_t rc;
290 char ea_value[4];
291 __u32 mode;
292
293 rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS",
294 ea_value, 4 /* size of buf */, cifs_sb->local_nls,
295 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
296 if(rc < 0)
297 return (int)rc;
298 else if (rc > 3) {
299 mode = le32_to_cpu(*((__le32 *)ea_value));
c119b87d 300 inode->i_mode &= ~SFBITS_MASK;
3020a1f5 301 cFYI(1,("special bits 0%o org mode 0%o", mode, inode->i_mode));
9e294f1c
SF		 302 inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode;
303 cFYI(1,("special mode bits 0%o", mode));
304 return 0;
305 } else {
306 return 0;
307 }
3020a1f5
SF		 308#else
309 return -EOPNOTSUPP;
310#endif
311
9e294f1c
SF		 312
313}
314
1da177e4
LT		 315int cifs_get_inode_info(struct inode **pinode,
316 const unsigned char *search_path, FILE_ALL_INFO *pfindData,
317 struct super_block *sb, int xid)
318{
319 int rc = 0;
320 struct cifsTconInfo *pTcon;
321 struct inode *inode;
322 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
323 char *tmp_path;
324 char *buf = NULL;
8d6286fd 325 int adjustTZ = FALSE;
1da177e4
LT		 326
327 pTcon = cifs_sb->tcon;
d6e2f2a4 328 cFYI(1,("Getting info on %s", search_path));
1da177e4 329
d0d2f2df
SF		 330 if ((pfindData == NULL) && (*pinode != NULL)) {
331 if (CIFS_I(*pinode)->clientCanCacheRead) {
1da177e4
LT		 332 cFYI(1,("No need to revalidate cached inode sizes"));
333 return rc;
334 }
335 }
336
337 /* if file info not passed in then get it from server */
d0d2f2df 338 if (pfindData == NULL) {
1da177e4 339 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
d0d2f2df 340 if (buf == NULL)
1da177e4
LT		 341 return -ENOMEM;
342 pfindData = (FILE_ALL_INFO *)buf;
343 /* could do find first instead but this returns more info */
344 rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData,
acf1a1b1 345 0 /* not legacy */,
6b8edfe0 346 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
737b758c 347 CIFS_MOUNT_MAP_SPECIAL_CHR);
6b8edfe0
SF		 348 /* BB optimize code so we do not make the above call
349 when server claims no NT SMB support and the above call
350 failed at least once - set flag in tcon or mount */
351 if((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
352 rc = SMBQueryInformation(xid, pTcon, search_path,
353 pfindData, cifs_sb->local_nls,
354 cifs_sb->mnt_cifs_flags &
355 CIFS_MOUNT_MAP_SPECIAL_CHR);
8d6286fd 356 adjustTZ = TRUE;
6b8edfe0
SF		 357 }
358
1da177e4
LT		 359 }
360 /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
361 if (rc) {
362 if (rc == -EREMOTE) {
363 tmp_path =
364 kmalloc(strnlen
365 (pTcon->treeName,
366 MAX_TREE_SIZE + 1) +
367 strnlen(search_path, MAX_PATHCONF) + 1,
368 GFP_KERNEL);
369 if (tmp_path == NULL) {
370 kfree(buf);
371 return -ENOMEM;
372 }
373
374 strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
375 strncat(tmp_path, search_path, MAX_PATHCONF);
376 rc = connect_to_dfs_path(xid, pTcon->ses,
377 /* treename + */ tmp_path,
737b758c
SF		 378 cifs_sb->local_nls,
379 cifs_sb->mnt_cifs_flags &
380 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 381 kfree(tmp_path);
382 /* BB fix up inode etc. */
383 } else if (rc) {
384 kfree(buf);
385 return rc;
386 }
387 } else {
388 struct cifsInodeInfo *cifsInfo;
389 __u32 attr = le32_to_cpu(pfindData->Attributes);
390
391 /* get new inode */
392 if (*pinode == NULL) {
393 *pinode = new_inode(sb);
acf1a1b1
SF		 394 if (*pinode == NULL) {
395 kfree(buf);
1da177e4 396 return -ENOMEM;
acf1a1b1 397 }
1da177e4
LT		 398 /* Is an i_ino of zero legal? Can we use that to check
399 if the server supports returning inode numbers? Are
400 there other sanity checks we can use to ensure that
401 the server is really filling in that field? */
402
403 /* We can not use the IndexNumber field by default from
404 Windows or Samba (in ALL_INFO buf) but we can request
405 it explicitly. It may not be unique presumably if
406 the server has multiple devices mounted under one
407 share */
408
409 /* There may be higher info levels that work but are
410 there Windows server or network appliances for which
411 IndexNumber field is not guaranteed unique? */
412
d0d2f2df 413 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM){
1da177e4
LT		 414 int rc1 = 0;
415 __u64 inode_num;
416
417 rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
418 search_path, &inode_num,
737b758c
SF		 419 cifs_sb->local_nls,
420 cifs_sb->mnt_cifs_flags &
421 CIFS_MOUNT_MAP_SPECIAL_CHR);
d0d2f2df 422 if (rc1) {
1da177e4
LT		 423 cFYI(1,("GetSrvInodeNum rc %d", rc1));
424 /* BB EOPNOSUPP disable SERVER_INUM? */
425 } else /* do we need cast or hash to ino? */
426 (*pinode)->i_ino = inode_num;
427 } /* else ino incremented to unique num in new_inode*/
1b2b2126
SF		 428 if(sb->s_flags & MS_NOATIME)
429 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
1da177e4
LT		 430 insert_inode_hash(*pinode);
431 }
432 inode = *pinode;
433 cifsInfo = CIFS_I(inode);
434 cifsInfo->cifsAttrs = attr;
26a21b98 435 cFYI(1, ("Old time %ld", cifsInfo->time));
1da177e4 436 cifsInfo->time = jiffies;
26a21b98 437 cFYI(1, ("New time %ld", cifsInfo->time));
1da177e4
LT		 438
439 /* blksize needs to be multiple of two. So safer to default to
440 blksize and blkbits set in superblock so 2**blkbits and blksize
441 will match rather than setting to:
442 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
443
26a21b98 444 /* Linux can not store file creation time so ignore it */
1bd5bbcb
SF		 445 if(pfindData->LastAccessTime)
446 inode->i_atime = cifs_NTtimeToUnix
447 (le64_to_cpu(pfindData->LastAccessTime));
448 else /* do not need to use current_fs_time - time not stored */
449 inode->i_atime = CURRENT_TIME;
1da177e4
LT		 450 inode->i_mtime =
451 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
452 inode->i_ctime =
453 cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
26a21b98 454 cFYI(0, ("Attributes came in as 0x%x", attr));
8d6286fd
SF		 455 if(adjustTZ && (pTcon->ses) && (pTcon->ses->server)) {
456 inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj;
457 inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj;
458 }
1da177e4
LT		 459
460 /* set default mode. will override for dirs below */
461 if (atomic_read(&cifsInfo->inUse) == 0)
462 /* new inode, can safely set these fields */
463 inode->i_mode = cifs_sb->mnt_file_mode;
3020a1f5
SF		 464 else /* since we set the inode type below we need to mask off
465 to avoid strange results if type changes and both get orred in */
466 inode->i_mode &= ~S_IFMT;
1da177e4
LT		 467/* if (attr & ATTR_REPARSE) */
468 /* We no longer handle these as symlinks because we could not
469 follow them due to the absolute path with drive letter */
470 if (attr & ATTR_DIRECTORY) {
471 /* override default perms since we do not do byte range locking
472 on dirs */
473 inode->i_mode = cifs_sb->mnt_dir_mode;
474 inode->i_mode |= S_IFDIR;
eda3c029
SF		 475 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
476 (cifsInfo->cifsAttrs & ATTR_SYSTEM) &&
477 /* No need to le64 convert size of zero */
478 (pfindData->EndOfFile == 0)) {
479 inode->i_mode = cifs_sb->mnt_file_mode;
480 inode->i_mode |= S_IFIFO;
d6e2f2a4
SF		 481/* BB Finish for SFU style symlinks and devices */
482 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
483 (cifsInfo->cifsAttrs & ATTR_SYSTEM)) {
484 if (decode_sfu_inode(inode,
485 le64_to_cpu(pfindData->EndOfFile),
486 search_path,
487 cifs_sb, xid)) {
488 cFYI(1,("Unrecognized sfu inode type"));
489 }
3020a1f5 490 cFYI(1,("sfu mode 0%o",inode->i_mode));
1da177e4
LT		 491 } else {
492 inode->i_mode |= S_IFREG;
493 /* treat the dos attribute of read-only as read-only
494 mode e.g. 555 */
495 if (cifsInfo->cifsAttrs & ATTR_READONLY)
496 inode->i_mode &= ~(S_IWUGO);
f5c1e2ea
AT		 497 else if ((inode->i_mode & S_IWUGO) == 0)
498 /* the ATTR_READONLY flag may have been */
499 /* changed on server -- set any w bits */
500 /* allowed by mnt_file_mode */
501 inode->i_mode |= (S_IWUGO &
502 cifs_sb->mnt_file_mode);
1da177e4
LT		 503 /* BB add code here -
504 validate if device or weird share or device type? */
505 }
3677db10
SF		 506
507 spin_lock(&inode->i_lock);
7ba52631
SF		 508 if (is_size_safe_to_change(cifsInfo, le64_to_cpu(pfindData->EndOfFile))) {
509 /* can not safely shrink the file size here if the
1da177e4
LT		 510 client is writing to it due to potential races */
511 i_size_write(inode,le64_to_cpu(pfindData->EndOfFile));
512
513 /* 512 bytes (2**9) is the fake blocksize that must be
514 used for this calculation */
515 inode->i_blocks = (512 - 1 + le64_to_cpu(
516 pfindData->AllocationSize)) >> 9;
517 }
3677db10 518 spin_unlock(&inode->i_lock);
1da177e4
LT		 519
520 inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
521
522 /* BB fill in uid and gid here? with help from winbind?
523 or retrieve from NTFS stream extended attribute */
9e294f1c
SF		 524 if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
525 /* fill in uid, gid, mode from server ACL */
526 get_sfu_uid_mode(inode, search_path, cifs_sb, xid);
527 } else if (atomic_read(&cifsInfo->inUse) == 0) {
1da177e4
LT		 528 inode->i_uid = cifs_sb->mnt_uid;
529 inode->i_gid = cifs_sb->mnt_gid;
530 /* set so we do not keep refreshing these fields with
531 bad data after user has changed them in memory */
532 atomic_set(&cifsInfo->inUse,1);
533 }
534
535 if (S_ISREG(inode->i_mode)) {
d6e2f2a4 536 cFYI(1, ("File inode"));
1da177e4 537 inode->i_op = &cifs_file_inode_ops;
8b94bcb9
SF		 538 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
539 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
540 inode->i_fop =
541 &cifs_file_direct_nobrl_ops;
542 else
543 inode->i_fop = &cifs_file_direct_ops;
544 } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
545 inode->i_fop = &cifs_file_nobrl_ops;
546 else /* not direct, send byte range locks */
1da177e4 547 inode->i_fop = &cifs_file_ops;
8b94bcb9 548
bfa0d75a 549 if(pTcon->ses->server->maxBuf <
273d81d6
DK		 550 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
551 inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
552 else
553 inode->i_data.a_ops = &cifs_addr_ops;
1da177e4 554 } else if (S_ISDIR(inode->i_mode)) {
d6e2f2a4 555 cFYI(1, ("Directory inode"));
1da177e4
LT		 556 inode->i_op = &cifs_dir_inode_ops;
557 inode->i_fop = &cifs_dir_ops;
558 } else if (S_ISLNK(inode->i_mode)) {
d6e2f2a4 559 cFYI(1, ("Symbolic Link inode"));
1da177e4
LT		 560 inode->i_op = &cifs_symlink_inode_ops;
561 } else {
562 init_special_inode(inode, inode->i_mode,
563 inode->i_rdev);
564 }
565 }
566 kfree(buf);
567 return rc;
568}
569
570/* gets root inode */
571void cifs_read_inode(struct inode *inode)
572{
573 int xid;
574 struct cifs_sb_info *cifs_sb;
575
576 cifs_sb = CIFS_SB(inode->i_sb);
577 xid = GetXid();
578 if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
579 cifs_get_inode_info_unix(&inode, "", inode->i_sb,xid);
580 else
581 cifs_get_inode_info(&inode, "", NULL, inode->i_sb,xid);
582 /* can not call macro FreeXid here since in a void func */
583 _FreeXid(xid);
584}
585
586int cifs_unlink(struct inode *inode, struct dentry *direntry)
587{
588 int rc = 0;
589 int xid;
590 struct cifs_sb_info *cifs_sb;
591 struct cifsTconInfo *pTcon;
592 char *full_path = NULL;
593 struct cifsInodeInfo *cifsInode;
594 FILE_BASIC_INFO *pinfo_buf;
595
06bcfedd 596 cFYI(1, ("cifs_unlink, inode = 0x%p", inode));
1da177e4
LT		 597
598 xid = GetXid();
599
6910ab30
SF		 600 if(inode)
601 cifs_sb = CIFS_SB(inode->i_sb);
602 else
06bcfedd 603 cifs_sb = CIFS_SB(direntry->d_sb);
1da177e4
LT		 604 pTcon = cifs_sb->tcon;
605
606 /* Unlink can be called from rename so we can not grab the sem here
607 since we deadlock otherwise */
a11f3a05 608/* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
7f57356b 609 full_path = build_path_from_dentry(direntry);
a11f3a05 610/* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
1da177e4
LT		 611 if (full_path == NULL) {
612 FreeXid(xid);
613 return -ENOMEM;
614 }
737b758c
SF		 615 rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
616 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 617
618 if (!rc) {
d0d2f2df 619 if (direntry->d_inode)
9a53c3a7 620 drop_nlink(direntry->d_inode);
1da177e4
LT		 621 } else if (rc == -ENOENT) {
622 d_drop(direntry);
623 } else if (rc == -ETXTBSY) {
624 int oplock = FALSE;
625 __u16 netfid;
626
627 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
628 CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
737b758c
SF		 629 &netfid, &oplock, NULL, cifs_sb->local_nls,
630 cifs_sb->mnt_cifs_flags &
631 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 632 if (rc==0) {
633 CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
737b758c
SF		 634 cifs_sb->local_nls,
635 cifs_sb->mnt_cifs_flags &
636 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 637 CIFSSMBClose(xid, pTcon, netfid);
d0d2f2df 638 if (direntry->d_inode)
9a53c3a7 639 drop_nlink(direntry->d_inode);
1da177e4
LT		 640 }
641 } else if (rc == -EACCES) {
642 /* try only if r/o attribute set in local lookup data? */
a048d7a8 643 pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
1da177e4 644 if (pinfo_buf) {
1da177e4
LT		 645 /* ATTRS set to normal clears r/o bit */
646 pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
647 if (!(pTcon->ses->flags & CIFS_SES_NT4))
648 rc = CIFSSMBSetTimes(xid, pTcon, full_path,
649 pinfo_buf,
737b758c
SF		 650 cifs_sb->local_nls,
651 cifs_sb->mnt_cifs_flags &
652 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 653 else
654 rc = -EOPNOTSUPP;
655
656 if (rc == -EOPNOTSUPP) {
657 int oplock = FALSE;
658 __u16 netfid;
659 /* rc = CIFSSMBSetAttrLegacy(xid, pTcon,
660 full_path,
661 (__u16)ATTR_NORMAL,
662 cifs_sb->local_nls);
663 For some strange reason it seems that NT4 eats the
664 old setattr call without actually setting the
665 attributes so on to the third attempted workaround
666 */
667
668 /* BB could scan to see if we already have it open
669 and pass in pid of opener to function */
670 rc = CIFSSMBOpen(xid, pTcon, full_path,
671 FILE_OPEN, SYNCHRONIZE |
672 FILE_WRITE_ATTRIBUTES, 0,
673 &netfid, &oplock, NULL,
737b758c
SF		 674 cifs_sb->local_nls,
675 cifs_sb->mnt_cifs_flags &
676 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 677 if (rc==0) {
678 rc = CIFSSMBSetFileTimes(xid, pTcon,
679 pinfo_buf,
680 netfid);
681 CIFSSMBClose(xid, pTcon, netfid);
682 }
683 }
684 kfree(pinfo_buf);
685 }
686 if (rc==0) {
737b758c
SF		 687 rc = CIFSSMBDelFile(xid, pTcon, full_path,
688 cifs_sb->local_nls,
689 cifs_sb->mnt_cifs_flags &
690 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 691 if (!rc) {
d0d2f2df 692 if (direntry->d_inode)
9a53c3a7 693 drop_nlink(direntry->d_inode);
1da177e4
LT		 694 } else if (rc == -ETXTBSY) {
695 int oplock = FALSE;
696 __u16 netfid;
697
698 rc = CIFSSMBOpen(xid, pTcon, full_path,
699 FILE_OPEN, DELETE,
700 CREATE_NOT_DIR |
701 CREATE_DELETE_ON_CLOSE,
702 &netfid, &oplock, NULL,
737b758c
SF		 703 cifs_sb->local_nls,
704 cifs_sb->mnt_cifs_flags &
705 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 706 if (rc==0) {
707 CIFSSMBRenameOpenFile(xid, pTcon,
708 netfid, NULL,
737b758c
SF		 709 cifs_sb->local_nls,
710 cifs_sb->mnt_cifs_flags &
711 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 712 CIFSSMBClose(xid, pTcon, netfid);
d0d2f2df 713 if (direntry->d_inode)
9a53c3a7 714 drop_nlink(direntry->d_inode);
1da177e4
LT		 715 }
716 /* BB if rc = -ETXTBUSY goto the rename logic BB */
717 }
718 }
719 }
d0d2f2df 720 if (direntry->d_inode) {
b2aeb9d5
SF		 721 cifsInode = CIFS_I(direntry->d_inode);
722 cifsInode->time = 0; /* will force revalidate to get info
723 when needed */
724 direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
725 }
06bcfedd
SF		 726 if(inode) {
727 inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
728 cifsInode = CIFS_I(inode);
729 cifsInode->time = 0; /* force revalidate of dir as well */
730 }
1da177e4
LT		 731
732 kfree(full_path);
733 FreeXid(xid);
734 return rc;
735}
736
2dd29d31
SF		 737static void posix_fill_in_inode(struct inode *tmp_inode,
738 FILE_UNIX_BASIC_INFO *pData, int *pobject_type, int isNewInode)
739{
740 loff_t local_size;
741 struct timespec local_mtime;
742
743 struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
744 struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
745
746 __u32 type = le32_to_cpu(pData->Type);
747 __u64 num_of_bytes = le64_to_cpu(pData->NumOfBytes);
748 __u64 end_of_file = le64_to_cpu(pData->EndOfFile);
749 cifsInfo->time = jiffies;
750 atomic_inc(&cifsInfo->inUse);
751
752 /* save mtime and size */
753 local_mtime = tmp_inode->i_mtime;
754 local_size = tmp_inode->i_size;
755
756 tmp_inode->i_atime =
757 cifs_NTtimeToUnix(le64_to_cpu(pData->LastAccessTime));
758 tmp_inode->i_mtime =
759 cifs_NTtimeToUnix(le64_to_cpu(pData->LastModificationTime));
760 tmp_inode->i_ctime =
761 cifs_NTtimeToUnix(le64_to_cpu(pData->LastStatusChange));
762
763 tmp_inode->i_mode = le64_to_cpu(pData->Permissions);
764 /* since we set the inode type below we need to mask off type
765 to avoid strange results if bits above were corrupt */
766 tmp_inode->i_mode &= ~S_IFMT;
767 if (type == UNIX_FILE) {
768 *pobject_type = DT_REG;
769 tmp_inode->i_mode |= S_IFREG;
770 } else if (type == UNIX_SYMLINK) {
771 *pobject_type = DT_LNK;
772 tmp_inode->i_mode |= S_IFLNK;
773 } else if (type == UNIX_DIR) {
774 *pobject_type = DT_DIR;
775 tmp_inode->i_mode |= S_IFDIR;
776 } else if (type == UNIX_CHARDEV) {
777 *pobject_type = DT_CHR;
778 tmp_inode->i_mode |= S_IFCHR;
779 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
780 le64_to_cpu(pData->DevMinor) & MINORMASK);
781 } else if (type == UNIX_BLOCKDEV) {
782 *pobject_type = DT_BLK;
783 tmp_inode->i_mode |= S_IFBLK;
784 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
785 le64_to_cpu(pData->DevMinor) & MINORMASK);
786 } else if (type == UNIX_FIFO) {
787 *pobject_type = DT_FIFO;
788 tmp_inode->i_mode |= S_IFIFO;
789 } else if (type == UNIX_SOCKET) {
790 *pobject_type = DT_SOCK;
791 tmp_inode->i_mode |= S_IFSOCK;
792 } else {
793 /* safest to just call it a file */
794 *pobject_type = DT_REG;
795 tmp_inode->i_mode |= S_IFREG;
796 cFYI(1,("unknown inode type %d",type));
797 }
798
cbac3cba
SF		 799#ifdef CONFIG_CIFS_DEBUG2
800 cFYI(1,("object type: %d", type));
801#endif
2dd29d31
SF		 802 tmp_inode->i_uid = le64_to_cpu(pData->Uid);
803 tmp_inode->i_gid = le64_to_cpu(pData->Gid);
804 tmp_inode->i_nlink = le64_to_cpu(pData->Nlinks);
805
806 spin_lock(&tmp_inode->i_lock);
807 if (is_size_safe_to_change(cifsInfo, end_of_file)) {
808 /* can not safely change the file size here if the
809 client is writing to it due to potential races */
810 i_size_write(tmp_inode, end_of_file);
811
812 /* 512 bytes (2**9) is the fake blocksize that must be used */
813 /* for this calculation, not the real blocksize */
814 tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
815 }
816 spin_unlock(&tmp_inode->i_lock);
817
818 if (S_ISREG(tmp_inode->i_mode)) {
819 cFYI(1, ("File inode"));
820 tmp_inode->i_op = &cifs_file_inode_ops;
821
822 if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
823 if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
824 tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
825 else
826 tmp_inode->i_fop = &cifs_file_direct_ops;
827
828 } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
829 tmp_inode->i_fop = &cifs_file_nobrl_ops;
830 else
831 tmp_inode->i_fop = &cifs_file_ops;
832
833 if((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
834 (cifs_sb->tcon->ses->server->maxBuf <
835 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE))
836 tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
837 else
838 tmp_inode->i_data.a_ops = &cifs_addr_ops;
839
840 if(isNewInode)
841 return; /* No sense invalidating pages for new inode since we
842 have not started caching readahead file data yet */
843
844 if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
845 (local_size == tmp_inode->i_size)) {
846 cFYI(1, ("inode exists but unchanged"));
847 } else {
848 /* file may have changed on server */
849 cFYI(1, ("invalidate inode, readdir detected change"));
850 invalidate_remote_inode(tmp_inode);
851 }
852 } else if (S_ISDIR(tmp_inode->i_mode)) {
853 cFYI(1, ("Directory inode"));
854 tmp_inode->i_op = &cifs_dir_inode_ops;
855 tmp_inode->i_fop = &cifs_dir_ops;
856 } else if (S_ISLNK(tmp_inode->i_mode)) {
857 cFYI(1, ("Symbolic Link inode"));
858 tmp_inode->i_op = &cifs_symlink_inode_ops;
859/* tmp_inode->i_fop = *//* do not need to set to anything */
860 } else {
861 cFYI(1, ("Special inode"));
862 init_special_inode(tmp_inode, tmp_inode->i_mode,
863 tmp_inode->i_rdev);
864 }
865}
866
1da177e4
LT		 867int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
868{
869 int rc = 0;
870 int xid;
871 struct cifs_sb_info *cifs_sb;
872 struct cifsTconInfo *pTcon;
873 char *full_path = NULL;
874 struct inode *newinode = NULL;
875
6473a559 876 cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode));
1da177e4
LT		 877
878 xid = GetXid();
879
880 cifs_sb = CIFS_SB(inode->i_sb);
881 pTcon = cifs_sb->tcon;
882
7f57356b 883 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 884 if (full_path == NULL) {
885 FreeXid(xid);
886 return -ENOMEM;
887 }
2dd29d31
SF		 888
889 if((pTcon->ses->capabilities & CAP_UNIX) &&
890 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
891 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
892 u32 oplock = 0;
893 FILE_UNIX_BASIC_INFO * pInfo =
894 kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
895 if(pInfo == NULL) {
896 rc = -ENOMEM;
897 goto mkdir_out;
898 }
899
900 rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
901 mode, NULL /* netfid */, pInfo, &oplock,
902 full_path, cifs_sb->local_nls,
903 cifs_sb->mnt_cifs_flags &
904 CIFS_MOUNT_MAP_SPECIAL_CHR);
905 if (rc) {
906 cFYI(1, ("posix mkdir returned 0x%x", rc));
907 d_drop(direntry);
908 } else {
cbac3cba 909 int obj_type;
2dd29d31
SF		 910 if (pInfo->Type == -1) /* no return info - go query */
911 goto mkdir_get_info;
912/*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need to set uid/gid */
913 inc_nlink(inode);
914 if (pTcon->nocase)
915 direntry->d_op = &cifs_ci_dentry_ops;
916 else
917 direntry->d_op = &cifs_dentry_ops;
cbac3cba
SF		 918
919 newinode = new_inode(inode->i_sb);
920 if (newinode == NULL)
921 goto mkdir_get_info;
922 /* Is an i_ino of zero legal? */
923 /* Are there sanity checks we can use to ensure that
924 the server is really filling in that field? */
925 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
926 newinode->i_ino =
927 (unsigned long)pInfo->UniqueId;
928 } /* note ino incremented to unique num in new_inode */
929 if(inode->i_sb->s_flags & MS_NOATIME)
930 newinode->i_flags |= S_NOATIME | S_NOCMTIME;
931 newinode->i_nlink = 2;
932
933 insert_inode_hash(newinode);
2dd29d31 934 d_instantiate(direntry, newinode);
cbac3cba
SF		 935
936 /* we already checked in POSIXCreate whether
937 frame was long enough */
938 posix_fill_in_inode(direntry->d_inode,
2dd29d31 939 pInfo, &obj_type, 1 /* NewInode */);
cbac3cba
SF		 940#ifdef CONFIG_CIFS_DEBUG2
941 cFYI(1,("instantiated dentry %p %s to inode %p",
942 direntry, direntry->d_name.name, newinode));
943
944 if(newinode->i_nlink != 2)
945 cFYI(1,("unexpected number of links %d",
946 newinode->i_nlink));
947#endif
2dd29d31
SF		 948 }
949 kfree(pInfo);
950 goto mkdir_out;
951 }
952
1da177e4 953 /* BB add setting the equivalent of mode via CreateX w/ACLs */
737b758c
SF		 954 rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
955 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 956 if (rc) {
26a21b98 957 cFYI(1, ("cifs_mkdir returned 0x%x", rc));
1da177e4
LT		 958 d_drop(direntry);
959 } else {
2dd29d31 960mkdir_get_info:
d8c76e6f 961 inc_nlink(inode);
1da177e4
LT		 962 if (pTcon->ses->capabilities & CAP_UNIX)
963 rc = cifs_get_inode_info_unix(&newinode, full_path,
964 inode->i_sb,xid);
965 else
966 rc = cifs_get_inode_info(&newinode, full_path, NULL,
967 inode->i_sb,xid);
968
b92327fe
SF		 969 if (pTcon->nocase)
970 direntry->d_op = &cifs_ci_dentry_ops;
971 else
972 direntry->d_op = &cifs_dentry_ops;
1da177e4 973 d_instantiate(direntry, newinode);
2dd29d31
SF		 974 /* setting nlink not necessary except in cases where we
975 * failed to get it from the server or was set bogus */
976 if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
977 direntry->d_inode->i_nlink = 2;
1da177e4 978 if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
d0d2f2df 979 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1da177e4
LT		 980 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
981 mode,
83451879
SF		 982 (__u64)current->fsuid,
983 (__u64)current->fsgid,
1da177e4 984 0 /* dev_t */,
737b758c
SF		 985 cifs_sb->local_nls,
986 cifs_sb->mnt_cifs_flags &
987 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 988 } else {
989 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
990 mode, (__u64)-1,
991 (__u64)-1, 0 /* dev_t */,
737b758c
SF		 992 cifs_sb->local_nls,
993 cifs_sb->mnt_cifs_flags &
994 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 995 }
996 else {
997 /* BB to be implemented via Windows secrty descriptors
998 eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
999 -1, -1, local_nls); */
6473a559
SF		 1000 if(direntry->d_inode) {
1001 direntry->d_inode->i_mode = mode;
25741b3e 1002 direntry->d_inode->i_mode |= S_IFDIR;
6473a559
SF		 1003 if(cifs_sb->mnt_cifs_flags &
1004 CIFS_MOUNT_SET_UID) {
1005 direntry->d_inode->i_uid =
1006 current->fsuid;
1007 direntry->d_inode->i_gid =
1008 current->fsgid;
1009 }
1010 }
2a138ebb 1011 }
1da177e4 1012 }
2dd29d31 1013mkdir_out:
1da177e4
LT		 1014 kfree(full_path);
1015 FreeXid(xid);
1016 return rc;
1017}
1018
1019int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1020{
1021 int rc = 0;
1022 int xid;
1023 struct cifs_sb_info *cifs_sb;
1024 struct cifsTconInfo *pTcon;
1025 char *full_path = NULL;
1026 struct cifsInodeInfo *cifsInode;
1027
26a21b98 1028 cFYI(1, ("cifs_rmdir, inode = 0x%p", inode));
1da177e4
LT		 1029
1030 xid = GetXid();
1031
1032 cifs_sb = CIFS_SB(inode->i_sb);
1033 pTcon = cifs_sb->tcon;
1034
7f57356b 1035 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 1036 if (full_path == NULL) {
1037 FreeXid(xid);
1038 return -ENOMEM;
1039 }
1040
737b758c
SF		 1041 rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
1042 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1043
1044 if (!rc) {
9a53c3a7 1045 drop_nlink(inode);
3677db10 1046 spin_lock(&direntry->d_inode->i_lock);
1da177e4 1047 i_size_write(direntry->d_inode,0);
ce71ec36 1048 clear_nlink(direntry->d_inode);
3677db10 1049 spin_unlock(&direntry->d_inode->i_lock);
1da177e4
LT		 1050 }
1051
1052 cifsInode = CIFS_I(direntry->d_inode);
1053 cifsInode->time = 0; /* force revalidate to go get info when
1054 needed */
1055 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1056 current_fs_time(inode->i_sb);
1057
1058 kfree(full_path);
1059 FreeXid(xid);
1060 return rc;
1061}
1062
1063int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
1064 struct inode *target_inode, struct dentry *target_direntry)
1065{
1066 char *fromName;
1067 char *toName;
1068 struct cifs_sb_info *cifs_sb_source;
1069 struct cifs_sb_info *cifs_sb_target;
1070 struct cifsTconInfo *pTcon;
1071 int xid;
1072 int rc = 0;
1073
1074 xid = GetXid();
1075
1076 cifs_sb_target = CIFS_SB(target_inode->i_sb);
1077 cifs_sb_source = CIFS_SB(source_inode->i_sb);
1078 pTcon = cifs_sb_source->tcon;
1079
1080 if (pTcon != cifs_sb_target->tcon) {
1081 FreeXid(xid);
1082 return -EXDEV; /* BB actually could be allowed if same server,
1083 but different share.
1084 Might eventually add support for this */
1085 }
1086
1087 /* we already have the rename sem so we do not need to grab it again
1088 here to protect the path integrity */
7f57356b
SF		 1089 fromName = build_path_from_dentry(source_direntry);
1090 toName = build_path_from_dentry(target_direntry);
1da177e4
LT		 1091 if ((fromName == NULL) || (toName == NULL)) {
1092 rc = -ENOMEM;
1093 goto cifs_rename_exit;
1094 }
1095
1096 rc = CIFSSMBRename(xid, pTcon, fromName, toName,
737b758c
SF		 1097 cifs_sb_source->local_nls,
1098 cifs_sb_source->mnt_cifs_flags &
1099 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1100 if (rc == -EEXIST) {
1101 /* check if they are the same file because rename of hardlinked
1102 files is a noop */
1103 FILE_UNIX_BASIC_INFO *info_buf_source;
1104 FILE_UNIX_BASIC_INFO *info_buf_target;
1105
1106 info_buf_source =
1107 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1108 if (info_buf_source != NULL) {
1109 info_buf_target = info_buf_source + 1;
8e87d4dc
SF		 1110 if (pTcon->ses->capabilities & CAP_UNIX)
1111 rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
1112 info_buf_source,
1113 cifs_sb_source->local_nls,
1114 cifs_sb_source->mnt_cifs_flags &
1115 CIFS_MOUNT_MAP_SPECIAL_CHR);
1116 /* else rc is still EEXIST so will fall through to
1117 unlink the target and retry rename */
1da177e4
LT		 1118 if (rc == 0) {
1119 rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
1120 info_buf_target,
737b758c
SF		 1121 cifs_sb_target->local_nls,
1122 /* remap based on source sb */
1123 cifs_sb_source->mnt_cifs_flags &
1124 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1125 }
1126 if ((rc == 0) &&
1127 (info_buf_source->UniqueId ==
1128 info_buf_target->UniqueId)) {
1129 /* do not rename since the files are hardlinked which
1130 is a noop */
1131 } else {
1132 /* we either can not tell the files are hardlinked
1133 (as with Windows servers) or files are not
1134 hardlinked so delete the target manually before
1135 renaming to follow POSIX rather than Windows
1136 semantics */
1137 cifs_unlink(target_inode, target_direntry);
1138 rc = CIFSSMBRename(xid, pTcon, fromName,
1139 toName,
737b758c
SF		 1140 cifs_sb_source->local_nls,
1141 cifs_sb_source->mnt_cifs_flags
1142 & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1143 }
1144 kfree(info_buf_source);
1145 } /* if we can not get memory just leave rc as EEXIST */
1146 }
1147
1148 if (rc) {
1149 cFYI(1, ("rename rc %d", rc));
1150 }
1151
1152 if ((rc == -EIO) || (rc == -EEXIST)) {
1153 int oplock = FALSE;
1154 __u16 netfid;
1155
1156 /* BB FIXME Is Generic Read correct for rename? */
1157 /* if renaming directory - we should not say CREATE_NOT_DIR,
1158 need to test renaming open directory, also GENERIC_READ
1159 might not right be right access to request */
1160 rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
1161 CREATE_NOT_DIR, &netfid, &oplock, NULL,
737b758c
SF		 1162 cifs_sb_source->local_nls,
1163 cifs_sb_source->mnt_cifs_flags &
1164 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 1165 if (rc==0) {
8e87d4dc 1166 rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
737b758c
SF		 1167 cifs_sb_source->local_nls,
1168 cifs_sb_source->mnt_cifs_flags &
1169 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1170 CIFSSMBClose(xid, pTcon, netfid);
1171 }
1172 }
1173
1174cifs_rename_exit:
1175 kfree(fromName);
1176 kfree(toName);
1177 FreeXid(xid);
1178 return rc;
1179}
1180
1181int cifs_revalidate(struct dentry *direntry)
1182{
1183 int xid;
1184 int rc = 0;
1185 char *full_path;
1186 struct cifs_sb_info *cifs_sb;
1187 struct cifsInodeInfo *cifsInode;
1188 loff_t local_size;
1189 struct timespec local_mtime;
1190 int invalidate_inode = FALSE;
1191
1192 if (direntry->d_inode == NULL)
1193 return -ENOENT;
1194
1195 cifsInode = CIFS_I(direntry->d_inode);
1196
1197 if (cifsInode == NULL)
1198 return -ENOENT;
1199
1200 /* no sense revalidating inode info on file that no one can write */
1201 if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
1202 return rc;
1203
1204 xid = GetXid();
1205
1206 cifs_sb = CIFS_SB(direntry->d_sb);
1207
1208 /* can not safely grab the rename sem here if rename calls revalidate
1209 since that would deadlock */
7f57356b 1210 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 1211 if (full_path == NULL) {
1212 FreeXid(xid);
1213 return -ENOMEM;
1214 }
1215 cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
1216 "jiffies %ld", full_path, direntry->d_inode,
1217 direntry->d_inode->i_count.counter, direntry,
1218 direntry->d_time, jiffies));
1219
1220 if (cifsInode->time == 0) {
1221 /* was set to zero previously to force revalidate */
1222 } else if (time_before(jiffies, cifsInode->time + HZ) &&
1223 lookupCacheEnabled) {
1224 if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
1225 (direntry->d_inode->i_nlink == 1)) {
1226 kfree(full_path);
1227 FreeXid(xid);
1228 return rc;
1229 } else {
1230 cFYI(1, ("Have to revalidate file due to hardlinks"));
1231 }
1232 }
1233
1234 /* save mtime and size */
1235 local_mtime = direntry->d_inode->i_mtime;
1236 local_size = direntry->d_inode->i_size;
1237
1238 if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) {
1239 rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
1240 direntry->d_sb,xid);
1241 if (rc) {
1242 cFYI(1, ("error on getting revalidate info %d", rc));
1243/* if (rc != -ENOENT)
1244 rc = 0; */ /* BB should we cache info on
1245 certain errors? */
1246 }
1247 } else {
1248 rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
1249 direntry->d_sb,xid);
1250 if (rc) {
1251 cFYI(1, ("error on getting revalidate info %d", rc));
1252/* if (rc != -ENOENT)
1253 rc = 0; */ /* BB should we cache info on
1254 certain errors? */
1255 }
1256 }
1257 /* should we remap certain errors, access denied?, to zero */
1258
1259 /* if not oplocked, we invalidate inode pages if mtime or file size
1260 had changed on server */
1261
1262 if (timespec_equal(&local_mtime,&direntry->d_inode->i_mtime) &&
1263 (local_size == direntry->d_inode->i_size)) {
1264 cFYI(1, ("cifs_revalidate - inode unchanged"));
1265 } else {
1266 /* file may have changed on server */
1267 if (cifsInode->clientCanCacheRead) {
1268 /* no need to invalidate inode pages since we were the
1269 only ones who could have modified the file and the
1270 server copy is staler than ours */
1271 } else {
1272 invalidate_inode = TRUE;
1273 }
1274 }
1275
1276 /* can not grab this sem since kernel filesys locking documentation
1b1dcc1b
JS		 1277 indicates i_mutex may be taken by the kernel on lookup and rename
1278 which could deadlock if we grab the i_mutex here as well */
1279/* mutex_lock(&direntry->d_inode->i_mutex);*/
1da177e4
LT		 1280 /* need to write out dirty pages here */
1281 if (direntry->d_inode->i_mapping) {
1282 /* do we need to lock inode until after invalidate completes
1283 below? */
1284 filemap_fdatawrite(direntry->d_inode->i_mapping);
1285 }
1286 if (invalidate_inode) {
3abb9272
SF		 1287 /* shrink_dcache not necessary now that cifs dentry ops
1288 are exported for negative dentries */
1289/* if(S_ISDIR(direntry->d_inode->i_mode))
1290 shrink_dcache_parent(direntry); */
1291 if (S_ISREG(direntry->d_inode->i_mode)) {
1292 if (direntry->d_inode->i_mapping)
1293 filemap_fdatawait(direntry->d_inode->i_mapping);
1294 /* may eventually have to do this for open files too */
1295 if (list_empty(&(cifsInode->openFileList))) {
1296 /* changed on server - flush read ahead pages */
1297 cFYI(1, ("Invalidating read ahead data on "
1298 "closed file"));
1299 invalidate_remote_inode(direntry->d_inode);
1300 }
1da177e4
LT		 1301 }
1302 }
1b1dcc1b 1303/* mutex_unlock(&direntry->d_inode->i_mutex); */
1da177e4
LT		 1304
1305 kfree(full_path);
1306 FreeXid(xid);
1307 return rc;
1308}
1309
1310int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1311 struct kstat *stat)
1312{
1313 int err = cifs_revalidate(dentry);
5fe14c85 1314 if (!err) {
1da177e4 1315 generic_fillattr(dentry->d_inode, stat);
5fe14c85
SF		 1316 stat->blksize = CIFS_MAX_MSGSIZE;
1317 }
1da177e4
LT		 1318 return err;
1319}
1320
1321static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1322{
1323 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1324 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1325 struct page *page;
1326 char *kaddr;
1327 int rc = 0;
1328
1329 page = grab_cache_page(mapping, index);
1330 if (!page)
1331 return -ENOMEM;
1332
1333 kaddr = kmap_atomic(page, KM_USER0);
1334 memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset);
1335 flush_dcache_page(page);
1336 kunmap_atomic(kaddr, KM_USER0);
1337 unlock_page(page);
1338 page_cache_release(page);
1339 return rc;
1340}
1341
99ee4dbd 1342static int cifs_vmtruncate(struct inode * inode, loff_t offset)
3677db10
SF		 1343{
1344 struct address_space *mapping = inode->i_mapping;
1345 unsigned long limit;
1346
ba6a46a0 1347 spin_lock(&inode->i_lock);
3677db10
SF		 1348 if (inode->i_size < offset)
1349 goto do_expand;
1350 /*
1351 * truncation of in-use swapfiles is disallowed - it would cause
1352 * subsequent swapout to scribble on the now-freed blocks.
1353 */
ba6a46a0
SF		 1354 if (IS_SWAPFILE(inode)) {
1355 spin_unlock(&inode->i_lock);
3677db10 1356 goto out_busy;
ba6a46a0 1357 }
3677db10
SF		 1358 i_size_write(inode, offset);
1359 spin_unlock(&inode->i_lock);
1360 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
1361 truncate_inode_pages(mapping, offset);
1362 goto out_truncate;
1363
1364do_expand:
1365 limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
ba6a46a0
SF		 1366 if (limit != RLIM_INFINITY && offset > limit) {
1367 spin_unlock(&inode->i_lock);
3677db10 1368 goto out_sig;
ba6a46a0
SF		 1369 }
1370 if (offset > inode->i_sb->s_maxbytes) {
1371 spin_unlock(&inode->i_lock);
3677db10 1372 goto out_big;
ba6a46a0 1373 }
3677db10 1374 i_size_write(inode, offset);
ba6a46a0 1375 spin_unlock(&inode->i_lock);
3677db10
SF		 1376out_truncate:
1377 if (inode->i_op && inode->i_op->truncate)
1378 inode->i_op->truncate(inode);
1379 return 0;
1380out_sig:
1381 send_sig(SIGXFSZ, current, 0);
1382out_big:
1383 return -EFBIG;
1384out_busy:
1385 return -ETXTBSY;
1386}
1387
1da177e4
LT		 1388int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
1389{
1390 int xid;
1391 struct cifs_sb_info *cifs_sb;
1392 struct cifsTconInfo *pTcon;
1393 char *full_path = NULL;
1394 int rc = -EACCES;
1da177e4
LT		 1395 struct cifsFileInfo *open_file = NULL;
1396 FILE_BASIC_INFO time_buf;
1397 int set_time = FALSE;
066fcb06 1398 int set_dosattr = FALSE;
1da177e4
LT		 1399 __u64 mode = 0xFFFFFFFFFFFFFFFFULL;
1400 __u64 uid = 0xFFFFFFFFFFFFFFFFULL;
1401 __u64 gid = 0xFFFFFFFFFFFFFFFFULL;
1402 struct cifsInodeInfo *cifsInode;
1da177e4
LT		 1403
1404 xid = GetXid();
1405
3979877e 1406 cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
1da177e4 1407 direntry->d_name.name, attrs->ia_valid));
6473a559 1408
1da177e4
LT		 1409 cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
1410 pTcon = cifs_sb->tcon;
1411
2a138ebb 1412 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
6473a559
SF		 1413 /* check if we have permission to change attrs */
1414 rc = inode_change_ok(direntry->d_inode, attrs);
1415 if(rc < 0) {
1416 FreeXid(xid);
1417 return rc;
1418 } else
1419 rc = 0;
1420 }
1421
7f57356b 1422 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 1423 if (full_path == NULL) {
1424 FreeXid(xid);
1425 return -ENOMEM;
1426 }
1427 cifsInode = CIFS_I(direntry->d_inode);
1428
1429 /* BB check if we need to refresh inode from server now ? BB */
1430
1431 /* need to flush data before changing file size on server */
28fd1298 1432 filemap_write_and_wait(direntry->d_inode->i_mapping);
1da177e4
LT		 1433
1434 if (attrs->ia_valid & ATTR_SIZE) {
1da177e4
LT		 1435 /* To avoid spurious oplock breaks from server, in the case of
1436 inodes that we already have open, avoid doing path based
1437 setting of file size if we can do it by handle.
1438 This keeps our caching token (oplock) and avoids timeouts
1439 when the local oplock break takes longer to flush
1440 writebehind data than the SMB timeout for the SetPathInfo
1441 request would allow */
3979877e 1442
6148a742
SF		 1443 open_file = find_writable_file(cifsInode);
1444 if (open_file) {
1445 __u16 nfid = open_file->netfid;
1446 __u32 npid = open_file->pid;
1447 rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
1448 nfid, npid, FALSE);
23e7dd7d 1449 atomic_dec(&open_file->wrtPending);
6148a742 1450 cFYI(1,("SetFSize for attrs rc = %d", rc));
083d3a2c 1451 if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
6148a742
SF		 1452 int bytes_written;
1453 rc = CIFSSMBWrite(xid, pTcon,
1454 nfid, 0, attrs->ia_size,
1455 &bytes_written, NULL, NULL,
1456 1 /* 45 seconds */);
1457 cFYI(1,("Wrt seteof rc %d", rc));
1da177e4 1458 }
6473a559
SF		 1459 } else
1460 rc = -EINVAL;
1461
1da177e4
LT		 1462 if (rc != 0) {
1463 /* Set file size by pathname rather than by handle
1464 either because no valid, writeable file handle for
1465 it was found or because there was an error setting
1466 it by handle */
1467 rc = CIFSSMBSetEOF(xid, pTcon, full_path,
1468 attrs->ia_size, FALSE,
737b758c
SF		 1469 cifs_sb->local_nls,
1470 cifs_sb->mnt_cifs_flags &
1471 CIFS_MOUNT_MAP_SPECIAL_CHR);
e30dcf3a 1472 cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
083d3a2c 1473 if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
e30dcf3a
SF		 1474 __u16 netfid;
1475 int oplock = FALSE;
1476
1477 rc = SMBLegacyOpen(xid, pTcon, full_path,
1478 FILE_OPEN,
1479 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1480 CREATE_NOT_DIR, &netfid, &oplock,
1481 NULL, cifs_sb->local_nls,
1482 cifs_sb->mnt_cifs_flags &
1483 CIFS_MOUNT_MAP_SPECIAL_CHR);
1484 if (rc==0) {
1485 int bytes_written;
1486 rc = CIFSSMBWrite(xid, pTcon,
1487 netfid, 0,
1488 attrs->ia_size,
1489 &bytes_written, NULL,
1490 NULL, 1 /* 45 sec */);
1491 cFYI(1,("wrt seteof rc %d",rc));
1492 CIFSSMBClose(xid, pTcon, netfid);
1493 }
1494
1495 }
1da177e4
LT		 1496 }
1497
1498 /* Server is ok setting allocation size implicitly - no need
1499 to call:
1500 CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE,
1501 cifs_sb->local_nls);
1502 */
1503
1504 if (rc == 0) {
3677db10 1505 rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size);
1da177e4
LT		 1506 cifs_truncate_page(direntry->d_inode->i_mapping,
1507 direntry->d_inode->i_size);
e30dcf3a
SF		 1508 } else
1509 goto cifs_setattr_exit;
1da177e4
LT		 1510 }
1511 if (attrs->ia_valid & ATTR_UID) {
e30dcf3a 1512 cFYI(1, ("UID changed to %d", attrs->ia_uid));
1da177e4 1513 uid = attrs->ia_uid;
1da177e4
LT		 1514 }
1515 if (attrs->ia_valid & ATTR_GID) {
e30dcf3a 1516 cFYI(1, ("GID changed to %d", attrs->ia_gid));
1da177e4 1517 gid = attrs->ia_gid;
1da177e4
LT		 1518 }
1519
1520 time_buf.Attributes = 0;
1521 if (attrs->ia_valid & ATTR_MODE) {
e30dcf3a 1522 cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
1da177e4 1523 mode = attrs->ia_mode;
1da177e4
LT		 1524 }
1525
1526 if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX)
1527 && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
1528 rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
737b758c
SF		 1529 0 /* dev_t */, cifs_sb->local_nls,
1530 cifs_sb->mnt_cifs_flags &
1531 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 1532 else if (attrs->ia_valid & ATTR_MODE) {
cdbce9c8 1533 rc = 0;
1da177e4 1534 if ((mode & S_IWUGO) == 0) /* not writeable */ {
066fcb06
SF		 1535 if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
1536 set_dosattr = TRUE;
1da177e4
LT		 1537 time_buf.Attributes =
1538 cpu_to_le32(cifsInode->cifsAttrs |
1539 ATTR_READONLY);
066fcb06 1540 }
5268df2e
SF		 1541 } else if (cifsInode->cifsAttrs & ATTR_READONLY) {
1542 /* If file is readonly on server, we would
1543 not be able to write to it - so if any write
1544 bit is enabled for user or group or other we
1545 need to at least try to remove r/o dos attr */
1546 set_dosattr = TRUE;
1547 time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs &
1548 (~ATTR_READONLY));
1549 /* Windows ignores set to zero */
1550 if(time_buf.Attributes == 0)
1551 time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL);
1da177e4
LT		 1552 }
1553 /* BB to be implemented -
1554 via Windows security descriptors or streams */
1555 /* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid,
1556 cifs_sb->local_nls); */
1557 }
1558
1559 if (attrs->ia_valid & ATTR_ATIME) {
1560 set_time = TRUE;
1561 time_buf.LastAccessTime =
1562 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1563 } else
1564 time_buf.LastAccessTime = 0;
1565
1566 if (attrs->ia_valid & ATTR_MTIME) {
1567 set_time = TRUE;
1568 time_buf.LastWriteTime =
1569 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1570 } else
1571 time_buf.LastWriteTime = 0;
e30dcf3a
SF		 1572 /* Do not set ctime explicitly unless other time
1573 stamps are changed explicitly (i.e. by utime()
1574 since we would then have a mix of client and
1575 server times */
1576
1577 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
1da177e4 1578 set_time = TRUE;
e30dcf3a
SF		 1579 /* Although Samba throws this field away
1580 it may be useful to Windows - but we do
1581 not want to set ctime unless some other
1582 timestamp is changing */
26a21b98 1583 cFYI(1, ("CIFS - CTIME changed"));
1da177e4
LT		 1584 time_buf.ChangeTime =
1585 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1586 } else
1587 time_buf.ChangeTime = 0;
1588
066fcb06 1589 if (set_time || set_dosattr) {
1da177e4
LT		 1590 time_buf.CreationTime = 0; /* do not change */
1591 /* In the future we should experiment - try setting timestamps
1592 via Handle (SetFileInfo) instead of by path */
1593 if (!(pTcon->ses->flags & CIFS_SES_NT4))
1594 rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
737b758c
SF		 1595 cifs_sb->local_nls,
1596 cifs_sb->mnt_cifs_flags &
1597 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1598 else
1599 rc = -EOPNOTSUPP;
1600
1601 if (rc == -EOPNOTSUPP) {
1602 int oplock = FALSE;
1603 __u16 netfid;
1604
1605 cFYI(1, ("calling SetFileInfo since SetPathInfo for "
1606 "times not supported by this server"));
1607 /* BB we could scan to see if we already have it open
1608 and pass in pid of opener to function */
1609 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
1610 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1611 CREATE_NOT_DIR, &netfid, &oplock,
737b758c
SF		 1612 NULL, cifs_sb->local_nls,
1613 cifs_sb->mnt_cifs_flags &
1614 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1615 if (rc==0) {
1616 rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
1617 netfid);
1618 CIFSSMBClose(xid, pTcon, netfid);
1619 } else {
1620 /* BB For even older servers we could convert time_buf
1621 into old DOS style which uses two second
1622 granularity */
1623
1624 /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
1625 &time_buf, cifs_sb->local_nls); */
1626 }
1627 }
e30dcf3a
SF		 1628 /* Even if error on time set, no sense failing the call if
1629 the server would set the time to a reasonable value anyway,
1630 and this check ensures that we are not being called from
1631 sys_utimes in which case we ought to fail the call back to
1632 the user when the server rejects the call */
c14e894b 1633 if((rc) && (attrs->ia_valid &
e30dcf3a
SF		 1634 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
1635 rc = 0;
1da177e4
LT		 1636 }
1637
1638 /* do not need local check to inode_check_ok since the server does
1639 that */
1640 if (!rc)
1641 rc = inode_setattr(direntry->d_inode, attrs);
e30dcf3a 1642cifs_setattr_exit:
1da177e4
LT		 1643 kfree(full_path);
1644 FreeXid(xid);
1645 return rc;
1646}
1647
99ee4dbd 1648#if 0
1da177e4
LT		 1649void cifs_delete_inode(struct inode *inode)
1650{
26a21b98 1651 cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode));
1da177e4
LT		 1652 /* may have to add back in if and when safe distributed caching of
1653 directories added e.g. via FindNotify */
1654}
99ee4dbd 1655#endif
kernel source for telekom puls (alcatel/mediatek)