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[CIFS] whitespace/formatting fixes
[linux.git] / fs / cifs / inode.c
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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 ([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>
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 }
fb8c4b14 60 /* have to skip first of the double backslash of
1da177e4
LT		 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,
fb8c4b14
SF		 66 cifs_sb->local_nls,
67 cifs_sb->mnt_cifs_flags &
737b758c 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);
fb8c4b14 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 */
4523cc30 93 if (sb->s_flags & MS_NOATIME)
1b2b2126 94 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
50c2f753 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 105 /* this is ok to set on every inode revalidate */
fb8c4b14 106 atomic_set(&cifsInfo->inUse, 1);
1da177e4
LT		 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 116 /* since we set the inode type below we need to mask off
fb8c4b14
SF		 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;
fb8c4b14 140 cFYI(1, ("unknown type %d", type));
1da177e4 141 }
50c2f753 142
4523cc30
SF		 143 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
144 inode->i_uid = cifs_sb->mnt_uid;
145 else
146 inode->i_uid = le64_to_cpu(findData.Uid);
147
148 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
149 inode->i_gid = cifs_sb->mnt_gid;
150 else
151 inode->i_gid = le64_to_cpu(findData.Gid);
50c2f753 152
1da177e4
LT		 153 inode->i_nlink = le64_to_cpu(findData.Nlinks);
154
3677db10 155 spin_lock(&inode->i_lock);
7ba52631 156 if (is_size_safe_to_change(cifsInfo, end_of_file)) {
1da177e4
LT		 157 /* can not safely change the file size here if the
158 client is writing to it due to potential races */
1da177e4
LT		 159 i_size_write(inode, end_of_file);
160
161 /* blksize needs to be multiple of two. So safer to default to
162 blksize and blkbits set in superblock so 2**blkbits and blksize
163 will match rather than setting to:
164 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
165
166 /* This seems incredibly stupid but it turns out that i_blocks
167 is not related to (i_size / i_blksize), instead 512 byte size
168 is required for calculating num blocks */
169
170 /* 512 bytes (2**9) is the fake blocksize that must be used */
171 /* for this calculation */
172 inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
173 }
3677db10 174 spin_unlock(&inode->i_lock);
1da177e4
LT		 175
176 if (num_of_bytes < end_of_file)
8b94bcb9 177 cFYI(1, ("allocation size less than end of file"));
5515eff8
AM		 178 cFYI(1, ("Size %ld and blocks %llu",
179 (unsigned long) inode->i_size,
180 (unsigned long long)inode->i_blocks));
1da177e4 181 if (S_ISREG(inode->i_mode)) {
8b94bcb9 182 cFYI(1, ("File inode"));
1da177e4 183 inode->i_op = &cifs_file_inode_ops;
8b94bcb9
SF		 184 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
185 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
fb8c4b14 186 inode->i_fop =
8b94bcb9
SF		 187 &cifs_file_direct_nobrl_ops;
188 else
189 inode->i_fop = &cifs_file_direct_ops;
4523cc30 190 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
8b94bcb9 191 inode->i_fop = &cifs_file_nobrl_ops;
fb8c4b14 192 else /* not direct, send byte range locks */
1da177e4 193 inode->i_fop = &cifs_file_ops;
8b94bcb9 194
bfa0d75a 195 /* check if server can support readpages */
fb8c4b14 196 if (pTcon->ses->server->maxBuf <
273d81d6
DK		 197 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
198 inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
199 else
200 inode->i_data.a_ops = &cifs_addr_ops;
1da177e4 201 } else if (S_ISDIR(inode->i_mode)) {
8b94bcb9 202 cFYI(1, ("Directory inode"));
1da177e4
LT		 203 inode->i_op = &cifs_dir_inode_ops;
204 inode->i_fop = &cifs_dir_ops;
205 } else if (S_ISLNK(inode->i_mode)) {
8b94bcb9 206 cFYI(1, ("Symbolic Link inode"));
1da177e4
LT		 207 inode->i_op = &cifs_symlink_inode_ops;
208 /* tmp_inode->i_fop = */ /* do not need to set to anything */
209 } else {
8b94bcb9 210 cFYI(1, ("Init special inode"));
1da177e4
LT		 211 init_special_inode(inode, inode->i_mode,
212 inode->i_rdev);
213 }
214 }
215 return rc;
216}
217
fb8c4b14 218static int decode_sfu_inode(struct inode *inode, __u64 size,
d6e2f2a4
SF		 219 const unsigned char *path,
220 struct cifs_sb_info *cifs_sb, int xid)
221{
222 int rc;
223 int oplock = FALSE;
224 __u16 netfid;
225 struct cifsTconInfo *pTcon = cifs_sb->tcon;
86c96b4b 226 char buf[24];
d6e2f2a4 227 unsigned int bytes_read;
fb8c4b14 228 char *pbuf;
d6e2f2a4
SF		 229
230 pbuf = buf;
231
4523cc30 232 if (size == 0) {
d6e2f2a4
SF		 233 inode->i_mode |= S_IFIFO;
234 return 0;
235 } else if (size < 8) {
236 return -EINVAL; /* EOPNOTSUPP? */
237 }
50c2f753 238
d6e2f2a4
SF		 239 rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
240 CREATE_NOT_DIR, &netfid, &oplock, NULL,
241 cifs_sb->local_nls,
242 cifs_sb->mnt_cifs_flags &
243 CIFS_MOUNT_MAP_SPECIAL_CHR);
fb8c4b14 244 if (rc == 0) {
ec637e3f 245 int buf_type = CIFS_NO_BUFFER;
d6e2f2a4
SF		 246 /* Read header */
247 rc = CIFSSMBRead(xid, pTcon,
fb8c4b14 248 netfid,
86c96b4b 249 24 /* length */, 0 /* offset */,
ec637e3f 250 &bytes_read, &pbuf, &buf_type);
4523cc30
SF		 251 if ((rc == 0) && (bytes_read >= 8)) {
252 if (memcmp("IntxBLK", pbuf, 8) == 0) {
fb8c4b14 253 cFYI(1, ("Block device"));
3020a1f5 254 inode->i_mode |= S_IFBLK;
4523cc30 255 if (bytes_read == 24) {
86c96b4b
SF		 256 /* we have enough to decode dev num */
257 __u64 mjr; /* major */
258 __u64 mnr; /* minor */
259 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
260 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
261 inode->i_rdev = MKDEV(mjr, mnr);
262 }
4523cc30 263 } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
fb8c4b14 264 cFYI(1, ("Char device"));
3020a1f5 265 inode->i_mode |= S_IFCHR;
4523cc30 266 if (bytes_read == 24) {
86c96b4b
SF		 267 /* we have enough to decode dev num */
268 __u64 mjr; /* major */
269 __u64 mnr; /* minor */
270 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
271 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
272 inode->i_rdev = MKDEV(mjr, mnr);
fb8c4b14 273 }
4523cc30 274 } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
fb8c4b14 275 cFYI(1, ("Symlink"));
3020a1f5 276 inode->i_mode |= S_IFLNK;
86c96b4b
SF		 277 } else {
278 inode->i_mode |= S_IFREG; /* file? */
fb8c4b14 279 rc = -EOPNOTSUPP;
86c96b4b 280 }
3020a1f5
SF		 281 } else {
282 inode->i_mode |= S_IFREG; /* then it is a file */
fb8c4b14
SF		 283 rc = -EOPNOTSUPP; /* or some unknown SFU type */
284 }
d6e2f2a4 285 CIFSSMBClose(xid, pTcon, netfid);
d6e2f2a4
SF		 286 }
287 return rc;
d6e2f2a4
SF		 288}
289
9e294f1c
SF		 290#define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
291
fb8c4b14 292static int get_sfu_uid_mode(struct inode *inode,
9e294f1c
SF		 293 const unsigned char *path,
294 struct cifs_sb_info *cifs_sb, int xid)
295{
3020a1f5 296#ifdef CONFIG_CIFS_XATTR
9e294f1c
SF		 297 ssize_t rc;
298 char ea_value[4];
299 __u32 mode;
300
301 rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS",
302 ea_value, 4 /* size of buf */, cifs_sb->local_nls,
fb8c4b14 303 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
4523cc30 304 if (rc < 0)
9e294f1c
SF		 305 return (int)rc;
306 else if (rc > 3) {
307 mode = le32_to_cpu(*((__le32 *)ea_value));
fb8c4b14
SF		 308 inode->i_mode &= ~SFBITS_MASK;
309 cFYI(1, ("special bits 0%o org mode 0%o", mode, inode->i_mode));
9e294f1c 310 inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode;
fb8c4b14 311 cFYI(1, ("special mode bits 0%o", mode));
9e294f1c
SF		 312 return 0;
313 } else {
314 return 0;
315 }
3020a1f5
SF		 316#else
317 return -EOPNOTSUPP;
318#endif
9e294f1c
SF		 319}
320
1da177e4
LT		 321int cifs_get_inode_info(struct inode **pinode,
322 const unsigned char *search_path, FILE_ALL_INFO *pfindData,
323 struct super_block *sb, int xid)
324{
325 int rc = 0;
326 struct cifsTconInfo *pTcon;
327 struct inode *inode;
328 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
329 char *tmp_path;
330 char *buf = NULL;
8d6286fd 331 int adjustTZ = FALSE;
1da177e4
LT		 332
333 pTcon = cifs_sb->tcon;
fb8c4b14 334 cFYI(1, ("Getting info on %s", search_path));
1da177e4 335
d0d2f2df
SF		 336 if ((pfindData == NULL) && (*pinode != NULL)) {
337 if (CIFS_I(*pinode)->clientCanCacheRead) {
fb8c4b14 338 cFYI(1, ("No need to revalidate cached inode sizes"));
1da177e4
LT		 339 return rc;
340 }
341 }
342
343 /* if file info not passed in then get it from server */
d0d2f2df 344 if (pfindData == NULL) {
1da177e4 345 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
d0d2f2df 346 if (buf == NULL)
1da177e4
LT		 347 return -ENOMEM;
348 pfindData = (FILE_ALL_INFO *)buf;
349 /* could do find first instead but this returns more info */
350 rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData,
acf1a1b1 351 0 /* not legacy */,
6b8edfe0 352 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
737b758c 353 CIFS_MOUNT_MAP_SPECIAL_CHR);
6b8edfe0
SF		 354 /* BB optimize code so we do not make the above call
355 when server claims no NT SMB support and the above call
356 failed at least once - set flag in tcon or mount */
4523cc30 357 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
6b8edfe0 358 rc = SMBQueryInformation(xid, pTcon, search_path,
fb8c4b14 359 pfindData, cifs_sb->local_nls,
6b8edfe0
SF		 360 cifs_sb->mnt_cifs_flags &
361 CIFS_MOUNT_MAP_SPECIAL_CHR);
8d6286fd 362 adjustTZ = TRUE;
6b8edfe0 363 }
1da177e4
LT		 364 }
365 /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
366 if (rc) {
367 if (rc == -EREMOTE) {
368 tmp_path =
369 kmalloc(strnlen
370 (pTcon->treeName,
371 MAX_TREE_SIZE + 1) +
372 strnlen(search_path, MAX_PATHCONF) + 1,
373 GFP_KERNEL);
374 if (tmp_path == NULL) {
375 kfree(buf);
376 return -ENOMEM;
377 }
378
379 strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
380 strncat(tmp_path, search_path, MAX_PATHCONF);
381 rc = connect_to_dfs_path(xid, pTcon->ses,
382 /* treename + */ tmp_path,
fb8c4b14
SF		 383 cifs_sb->local_nls,
384 cifs_sb->mnt_cifs_flags &
737b758c 385 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 386 kfree(tmp_path);
387 /* BB fix up inode etc. */
388 } else if (rc) {
389 kfree(buf);
390 return rc;
391 }
392 } else {
393 struct cifsInodeInfo *cifsInfo;
394 __u32 attr = le32_to_cpu(pfindData->Attributes);
395
396 /* get new inode */
397 if (*pinode == NULL) {
398 *pinode = new_inode(sb);
acf1a1b1
SF		 399 if (*pinode == NULL) {
400 kfree(buf);
1da177e4 401 return -ENOMEM;
acf1a1b1 402 }
1da177e4
LT		 403 /* Is an i_ino of zero legal? Can we use that to check
404 if the server supports returning inode numbers? Are
405 there other sanity checks we can use to ensure that
406 the server is really filling in that field? */
407
408 /* We can not use the IndexNumber field by default from
409 Windows or Samba (in ALL_INFO buf) but we can request
410 it explicitly. It may not be unique presumably if
411 the server has multiple devices mounted under one
412 share */
413
414 /* There may be higher info levels that work but are
415 there Windows server or network appliances for which
416 IndexNumber field is not guaranteed unique? */
417
fb8c4b14 418 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
1da177e4
LT		 419 int rc1 = 0;
420 __u64 inode_num;
421
fb8c4b14
SF		 422 rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
423 search_path, &inode_num,
737b758c
SF		 424 cifs_sb->local_nls,
425 cifs_sb->mnt_cifs_flags &
426 CIFS_MOUNT_MAP_SPECIAL_CHR);
d0d2f2df 427 if (rc1) {
fb8c4b14 428 cFYI(1, ("GetSrvInodeNum rc %d", rc1));
1da177e4
LT		 429 /* BB EOPNOSUPP disable SERVER_INUM? */
430 } else /* do we need cast or hash to ino? */
431 (*pinode)->i_ino = inode_num;
432 } /* else ino incremented to unique num in new_inode*/
4523cc30 433 if (sb->s_flags & MS_NOATIME)
1b2b2126 434 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
1da177e4
LT		 435 insert_inode_hash(*pinode);
436 }
437 inode = *pinode;
438 cifsInfo = CIFS_I(inode);
439 cifsInfo->cifsAttrs = attr;
26a21b98 440 cFYI(1, ("Old time %ld", cifsInfo->time));
1da177e4 441 cifsInfo->time = jiffies;
26a21b98 442 cFYI(1, ("New time %ld", cifsInfo->time));
1da177e4
LT		 443
444 /* blksize needs to be multiple of two. So safer to default to
445 blksize and blkbits set in superblock so 2**blkbits and blksize
446 will match rather than setting to:
447 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
448
26a21b98 449 /* Linux can not store file creation time so ignore it */
4523cc30 450 if (pfindData->LastAccessTime)
1bd5bbcb
SF		 451 inode->i_atime = cifs_NTtimeToUnix
452 (le64_to_cpu(pfindData->LastAccessTime));
453 else /* do not need to use current_fs_time - time not stored */
454 inode->i_atime = CURRENT_TIME;
1da177e4
LT		 455 inode->i_mtime =
456 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
457 inode->i_ctime =
458 cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
26a21b98 459 cFYI(0, ("Attributes came in as 0x%x", attr));
4523cc30 460 if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) {
8d6286fd 461 inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj;
fb8c4b14 462 inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj;
8d6286fd 463 }
1da177e4
LT		 464
465 /* set default mode. will override for dirs below */
466 if (atomic_read(&cifsInfo->inUse) == 0)
467 /* new inode, can safely set these fields */
468 inode->i_mode = cifs_sb->mnt_file_mode;
3020a1f5 469 else /* since we set the inode type below we need to mask off
fb8c4b14
SF		 470 to avoid strange results if type changes and both
471 get orred in */
472 inode->i_mode &= ~S_IFMT;
1da177e4
LT		 473/* if (attr & ATTR_REPARSE) */
474 /* We no longer handle these as symlinks because we could not
475 follow them due to the absolute path with drive letter */
476 if (attr & ATTR_DIRECTORY) {
477 /* override default perms since we do not do byte range locking
478 on dirs */
479 inode->i_mode = cifs_sb->mnt_dir_mode;
480 inode->i_mode |= S_IFDIR;
eda3c029
SF		 481 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
482 (cifsInfo->cifsAttrs & ATTR_SYSTEM) &&
483 /* No need to le64 convert size of zero */
484 (pfindData->EndOfFile == 0)) {
485 inode->i_mode = cifs_sb->mnt_file_mode;
486 inode->i_mode |= S_IFIFO;
d6e2f2a4
SF		 487/* BB Finish for SFU style symlinks and devices */
488 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
489 (cifsInfo->cifsAttrs & ATTR_SYSTEM)) {
fb8c4b14 490 if (decode_sfu_inode(inode,
d6e2f2a4
SF		 491 le64_to_cpu(pfindData->EndOfFile),
492 search_path,
493 cifs_sb, xid)) {
fb8c4b14 494 cFYI(1, ("Unrecognized sfu inode type"));
d6e2f2a4 495 }
fb8c4b14 496 cFYI(1, ("sfu mode 0%o", inode->i_mode));
1da177e4
LT		 497 } else {
498 inode->i_mode |= S_IFREG;
499 /* treat the dos attribute of read-only as read-only
500 mode e.g. 555 */
501 if (cifsInfo->cifsAttrs & ATTR_READONLY)
502 inode->i_mode &= ~(S_IWUGO);
f5c1e2ea
AT		 503 else if ((inode->i_mode & S_IWUGO) == 0)
504 /* the ATTR_READONLY flag may have been */
505 /* changed on server -- set any w bits */
506 /* allowed by mnt_file_mode */
507 inode->i_mode |= (S_IWUGO &
508 cifs_sb->mnt_file_mode);
1da177e4
LT		 509 /* BB add code here -
510 validate if device or weird share or device type? */
511 }
50c2f753 512
3677db10 513 spin_lock(&inode->i_lock);
7ba52631
SF		 514 if (is_size_safe_to_change(cifsInfo, le64_to_cpu(pfindData->EndOfFile))) {
515 /* can not safely shrink the file size here if the
1da177e4 516 client is writing to it due to potential races */
fb8c4b14 517 i_size_write(inode, le64_to_cpu(pfindData->EndOfFile));
1da177e4
LT		 518
519 /* 512 bytes (2**9) is the fake blocksize that must be
520 used for this calculation */
521 inode->i_blocks = (512 - 1 + le64_to_cpu(
522 pfindData->AllocationSize)) >> 9;
523 }
3677db10 524 spin_unlock(&inode->i_lock);
1da177e4
LT		 525
526 inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
527
fb8c4b14 528 /* BB fill in uid and gid here? with help from winbind?
1da177e4 529 or retrieve from NTFS stream extended attribute */
4523cc30 530 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
9e294f1c 531 /* fill in uid, gid, mode from server ACL */
4523cc30
SF		 532 /* BB FIXME this should also take into account the
533 * default uid specified on mount if present */
9e294f1c
SF		 534 get_sfu_uid_mode(inode, search_path, cifs_sb, xid);
535 } else if (atomic_read(&cifsInfo->inUse) == 0) {
1da177e4
LT		 536 inode->i_uid = cifs_sb->mnt_uid;
537 inode->i_gid = cifs_sb->mnt_gid;
538 /* set so we do not keep refreshing these fields with
539 bad data after user has changed them in memory */
fb8c4b14 540 atomic_set(&cifsInfo->inUse, 1);
1da177e4
LT		 541 }
542
543 if (S_ISREG(inode->i_mode)) {
d6e2f2a4 544 cFYI(1, ("File inode"));
1da177e4 545 inode->i_op = &cifs_file_inode_ops;
8b94bcb9
SF		 546 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
547 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
548 inode->i_fop =
549 &cifs_file_direct_nobrl_ops;
550 else
551 inode->i_fop = &cifs_file_direct_ops;
4523cc30 552 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
8b94bcb9
SF		 553 inode->i_fop = &cifs_file_nobrl_ops;
554 else /* not direct, send byte range locks */
1da177e4 555 inode->i_fop = &cifs_file_ops;
8b94bcb9 556
fb8c4b14 557 if (pTcon->ses->server->maxBuf <
273d81d6
DK		 558 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
559 inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
560 else
561 inode->i_data.a_ops = &cifs_addr_ops;
1da177e4 562 } else if (S_ISDIR(inode->i_mode)) {
d6e2f2a4 563 cFYI(1, ("Directory inode"));
1da177e4
LT		 564 inode->i_op = &cifs_dir_inode_ops;
565 inode->i_fop = &cifs_dir_ops;
566 } else if (S_ISLNK(inode->i_mode)) {
d6e2f2a4 567 cFYI(1, ("Symbolic Link inode"));
1da177e4
LT		 568 inode->i_op = &cifs_symlink_inode_ops;
569 } else {
570 init_special_inode(inode, inode->i_mode,
571 inode->i_rdev);
572 }
573 }
574 kfree(buf);
575 return rc;
576}
577
578/* gets root inode */
579void cifs_read_inode(struct inode *inode)
580{
581 int xid;
582 struct cifs_sb_info *cifs_sb;
583
584 cifs_sb = CIFS_SB(inode->i_sb);
585 xid = GetXid();
586 if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
fb8c4b14 587 cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
1da177e4 588 else
fb8c4b14 589 cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid);
1da177e4
LT		 590 /* can not call macro FreeXid here since in a void func */
591 _FreeXid(xid);
592}
593
594int cifs_unlink(struct inode *inode, struct dentry *direntry)
595{
596 int rc = 0;
597 int xid;
598 struct cifs_sb_info *cifs_sb;
599 struct cifsTconInfo *pTcon;
600 char *full_path = NULL;
601 struct cifsInodeInfo *cifsInode;
602 FILE_BASIC_INFO *pinfo_buf;
603
06bcfedd 604 cFYI(1, ("cifs_unlink, inode = 0x%p", inode));
1da177e4
LT		 605
606 xid = GetXid();
607
4523cc30 608 if (inode)
6910ab30
SF		 609 cifs_sb = CIFS_SB(inode->i_sb);
610 else
06bcfedd 611 cifs_sb = CIFS_SB(direntry->d_sb);
1da177e4
LT		 612 pTcon = cifs_sb->tcon;
613
614 /* Unlink can be called from rename so we can not grab the sem here
615 since we deadlock otherwise */
a11f3a05 616/* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
7f57356b 617 full_path = build_path_from_dentry(direntry);
a11f3a05 618/* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
1da177e4
LT		 619 if (full_path == NULL) {
620 FreeXid(xid);
621 return -ENOMEM;
622 }
737b758c
SF		 623 rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
624 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 625
626 if (!rc) {
d0d2f2df 627 if (direntry->d_inode)
9a53c3a7 628 drop_nlink(direntry->d_inode);
1da177e4
LT		 629 } else if (rc == -ENOENT) {
630 d_drop(direntry);
631 } else if (rc == -ETXTBSY) {
632 int oplock = FALSE;
633 __u16 netfid;
634
635 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
636 CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
737b758c 637 &netfid, &oplock, NULL, cifs_sb->local_nls,
fb8c4b14 638 cifs_sb->mnt_cifs_flags &
737b758c 639 CIFS_MOUNT_MAP_SPECIAL_CHR);
fb8c4b14 640 if (rc == 0) {
1da177e4 641 CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
fb8c4b14
SF		 642 cifs_sb->local_nls,
643 cifs_sb->mnt_cifs_flags &
737b758c 644 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 645 CIFSSMBClose(xid, pTcon, netfid);
d0d2f2df 646 if (direntry->d_inode)
9a53c3a7 647 drop_nlink(direntry->d_inode);
1da177e4
LT		 648 }
649 } else if (rc == -EACCES) {
650 /* try only if r/o attribute set in local lookup data? */
a048d7a8 651 pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
1da177e4 652 if (pinfo_buf) {
1da177e4
LT		 653 /* ATTRS set to normal clears r/o bit */
654 pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
655 if (!(pTcon->ses->flags & CIFS_SES_NT4))
656 rc = CIFSSMBSetTimes(xid, pTcon, full_path,
657 pinfo_buf,
737b758c 658 cifs_sb->local_nls,
fb8c4b14 659 cifs_sb->mnt_cifs_flags &
737b758c 660 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 661 else
662 rc = -EOPNOTSUPP;
663
664 if (rc == -EOPNOTSUPP) {
665 int oplock = FALSE;
666 __u16 netfid;
667 /* rc = CIFSSMBSetAttrLegacy(xid, pTcon,
668 full_path,
669 (__u16)ATTR_NORMAL,
fb8c4b14 670 cifs_sb->local_nls);
1da177e4
LT		 671 For some strange reason it seems that NT4 eats the
672 old setattr call without actually setting the
673 attributes so on to the third attempted workaround
674 */
675
676 /* BB could scan to see if we already have it open
677 and pass in pid of opener to function */
678 rc = CIFSSMBOpen(xid, pTcon, full_path,
679 FILE_OPEN, SYNCHRONIZE |
680 FILE_WRITE_ATTRIBUTES, 0,
681 &netfid, &oplock, NULL,
737b758c 682 cifs_sb->local_nls,
fb8c4b14 683 cifs_sb->mnt_cifs_flags &
737b758c 684 CIFS_MOUNT_MAP_SPECIAL_CHR);
fb8c4b14 685 if (rc == 0) {
1da177e4
LT		 686 rc = CIFSSMBSetFileTimes(xid, pTcon,
687 pinfo_buf,
688 netfid);
689 CIFSSMBClose(xid, pTcon, netfid);
690 }
691 }
692 kfree(pinfo_buf);
693 }
fb8c4b14
SF		 694 if (rc == 0) {
695 rc = CIFSSMBDelFile(xid, pTcon, full_path,
696 cifs_sb->local_nls,
697 cifs_sb->mnt_cifs_flags &
737b758c 698 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 699 if (!rc) {
d0d2f2df 700 if (direntry->d_inode)
9a53c3a7 701 drop_nlink(direntry->d_inode);
1da177e4
LT		 702 } else if (rc == -ETXTBSY) {
703 int oplock = FALSE;
704 __u16 netfid;
705
706 rc = CIFSSMBOpen(xid, pTcon, full_path,
707 FILE_OPEN, DELETE,
708 CREATE_NOT_DIR |
709 CREATE_DELETE_ON_CLOSE,
710 &netfid, &oplock, NULL,
fb8c4b14
SF		 711 cifs_sb->local_nls,
712 cifs_sb->mnt_cifs_flags &
737b758c 713 CIFS_MOUNT_MAP_SPECIAL_CHR);
fb8c4b14 714 if (rc == 0) {
1da177e4
LT		 715 CIFSSMBRenameOpenFile(xid, pTcon,
716 netfid, NULL,
737b758c
SF		 717 cifs_sb->local_nls,
718 cifs_sb->mnt_cifs_flags &
719 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 720 CIFSSMBClose(xid, pTcon, netfid);
d0d2f2df 721 if (direntry->d_inode)
9a53c3a7 722 drop_nlink(direntry->d_inode);
1da177e4
LT		 723 }
724 /* BB if rc = -ETXTBUSY goto the rename logic BB */
725 }
726 }
727 }
d0d2f2df 728 if (direntry->d_inode) {
b2aeb9d5
SF		 729 cifsInode = CIFS_I(direntry->d_inode);
730 cifsInode->time = 0; /* will force revalidate to get info
731 when needed */
732 direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
733 }
4523cc30 734 if (inode) {
06bcfedd
SF		 735 inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
736 cifsInode = CIFS_I(inode);
737 cifsInode->time = 0; /* force revalidate of dir as well */
738 }
1da177e4
LT		 739
740 kfree(full_path);
741 FreeXid(xid);
742 return rc;
743}
744
2dd29d31
SF		 745static void posix_fill_in_inode(struct inode *tmp_inode,
746 FILE_UNIX_BASIC_INFO *pData, int *pobject_type, int isNewInode)
747{
748 loff_t local_size;
749 struct timespec local_mtime;
750
751 struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
752 struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
753
754 __u32 type = le32_to_cpu(pData->Type);
755 __u64 num_of_bytes = le64_to_cpu(pData->NumOfBytes);
756 __u64 end_of_file = le64_to_cpu(pData->EndOfFile);
757 cifsInfo->time = jiffies;
758 atomic_inc(&cifsInfo->inUse);
759
760 /* save mtime and size */
761 local_mtime = tmp_inode->i_mtime;
762 local_size = tmp_inode->i_size;
763
764 tmp_inode->i_atime =
765 cifs_NTtimeToUnix(le64_to_cpu(pData->LastAccessTime));
766 tmp_inode->i_mtime =
767 cifs_NTtimeToUnix(le64_to_cpu(pData->LastModificationTime));
768 tmp_inode->i_ctime =
769 cifs_NTtimeToUnix(le64_to_cpu(pData->LastStatusChange));
770
771 tmp_inode->i_mode = le64_to_cpu(pData->Permissions);
772 /* since we set the inode type below we need to mask off type
fb8c4b14
SF		 773 to avoid strange results if bits above were corrupt */
774 tmp_inode->i_mode &= ~S_IFMT;
2dd29d31
SF		 775 if (type == UNIX_FILE) {
776 *pobject_type = DT_REG;
777 tmp_inode->i_mode |= S_IFREG;
778 } else if (type == UNIX_SYMLINK) {
779 *pobject_type = DT_LNK;
780 tmp_inode->i_mode |= S_IFLNK;
781 } else if (type == UNIX_DIR) {
782 *pobject_type = DT_DIR;
783 tmp_inode->i_mode |= S_IFDIR;
784 } else if (type == UNIX_CHARDEV) {
785 *pobject_type = DT_CHR;
786 tmp_inode->i_mode |= S_IFCHR;
787 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
788 le64_to_cpu(pData->DevMinor) & MINORMASK);
789 } else if (type == UNIX_BLOCKDEV) {
790 *pobject_type = DT_BLK;
791 tmp_inode->i_mode |= S_IFBLK;
792 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
793 le64_to_cpu(pData->DevMinor) & MINORMASK);
794 } else if (type == UNIX_FIFO) {
795 *pobject_type = DT_FIFO;
796 tmp_inode->i_mode |= S_IFIFO;
797 } else if (type == UNIX_SOCKET) {
798 *pobject_type = DT_SOCK;
799 tmp_inode->i_mode |= S_IFSOCK;
800 } else {
801 /* safest to just call it a file */
802 *pobject_type = DT_REG;
803 tmp_inode->i_mode |= S_IFREG;
fb8c4b14 804 cFYI(1, ("unknown inode type %d", type));
2dd29d31
SF		 805 }
806
cbac3cba 807#ifdef CONFIG_CIFS_DEBUG2
fb8c4b14 808 cFYI(1, ("object type: %d", type));
cbac3cba 809#endif
2dd29d31
SF		 810 tmp_inode->i_uid = le64_to_cpu(pData->Uid);
811 tmp_inode->i_gid = le64_to_cpu(pData->Gid);
812 tmp_inode->i_nlink = le64_to_cpu(pData->Nlinks);
813
814 spin_lock(&tmp_inode->i_lock);
815 if (is_size_safe_to_change(cifsInfo, end_of_file)) {
fb8c4b14 816 /* can not safely change the file size here if the
2dd29d31
SF		 817 client is writing to it due to potential races */
818 i_size_write(tmp_inode, end_of_file);
819
820 /* 512 bytes (2**9) is the fake blocksize that must be used */
821 /* for this calculation, not the real blocksize */
822 tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
823 }
824 spin_unlock(&tmp_inode->i_lock);
825
826 if (S_ISREG(tmp_inode->i_mode)) {
827 cFYI(1, ("File inode"));
828 tmp_inode->i_op = &cifs_file_inode_ops;
829
fb8c4b14
SF		 830 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
831 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
2dd29d31
SF		 832 tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
833 else
834 tmp_inode->i_fop = &cifs_file_direct_ops;
50c2f753 835
fb8c4b14 836 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
2dd29d31
SF		 837 tmp_inode->i_fop = &cifs_file_nobrl_ops;
838 else
839 tmp_inode->i_fop = &cifs_file_ops;
840
fb8c4b14
SF		 841 if ((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
842 (cifs_sb->tcon->ses->server->maxBuf <
2dd29d31
SF		 843 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE))
844 tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
845 else
846 tmp_inode->i_data.a_ops = &cifs_addr_ops;
847
fb8c4b14
SF		 848 if (isNewInode)
849 return; /* No sense invalidating pages for new inode
850 since we we have not started caching
851 readahead file data yet */
2dd29d31
SF		 852
853 if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
854 (local_size == tmp_inode->i_size)) {
855 cFYI(1, ("inode exists but unchanged"));
856 } else {
857 /* file may have changed on server */
858 cFYI(1, ("invalidate inode, readdir detected change"));
859 invalidate_remote_inode(tmp_inode);
860 }
861 } else if (S_ISDIR(tmp_inode->i_mode)) {
862 cFYI(1, ("Directory inode"));
863 tmp_inode->i_op = &cifs_dir_inode_ops;
864 tmp_inode->i_fop = &cifs_dir_ops;
865 } else if (S_ISLNK(tmp_inode->i_mode)) {
866 cFYI(1, ("Symbolic Link inode"));
867 tmp_inode->i_op = &cifs_symlink_inode_ops;
868/* tmp_inode->i_fop = *//* do not need to set to anything */
869 } else {
fb8c4b14 870 cFYI(1, ("Special inode"));
2dd29d31
SF		 871 init_special_inode(tmp_inode, tmp_inode->i_mode,
872 tmp_inode->i_rdev);
fb8c4b14 873 }
2dd29d31
SF		 874}
875
1da177e4
LT		 876int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
877{
878 int rc = 0;
879 int xid;
880 struct cifs_sb_info *cifs_sb;
881 struct cifsTconInfo *pTcon;
882 char *full_path = NULL;
883 struct inode *newinode = NULL;
884
6473a559 885 cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode));
1da177e4
LT		 886
887 xid = GetXid();
888
889 cifs_sb = CIFS_SB(inode->i_sb);
890 pTcon = cifs_sb->tcon;
891
7f57356b 892 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 893 if (full_path == NULL) {
894 FreeXid(xid);
895 return -ENOMEM;
896 }
50c2f753 897
fb8c4b14
SF		 898 if ((pTcon->ses->capabilities & CAP_UNIX) &&
899 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
2dd29d31
SF		 900 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
901 u32 oplock = 0;
fb8c4b14 902 FILE_UNIX_BASIC_INFO * pInfo =
2dd29d31 903 kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
fb8c4b14 904 if (pInfo == NULL) {
2dd29d31
SF		 905 rc = -ENOMEM;
906 goto mkdir_out;
907 }
50c2f753 908
2dd29d31
SF		 909 rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
910 mode, NULL /* netfid */, pInfo, &oplock,
fb8c4b14
SF		 911 full_path, cifs_sb->local_nls,
912 cifs_sb->mnt_cifs_flags &
2dd29d31
SF		 913 CIFS_MOUNT_MAP_SPECIAL_CHR);
914 if (rc) {
915 cFYI(1, ("posix mkdir returned 0x%x", rc));
916 d_drop(direntry);
917 } else {
cbac3cba 918 int obj_type;
2dd29d31 919 if (pInfo->Type == -1) /* no return info - go query */
fb8c4b14
SF		 920 goto mkdir_get_info;
921/*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
922 to set uid/gid */
2dd29d31
SF		 923 inc_nlink(inode);
924 if (pTcon->nocase)
925 direntry->d_op = &cifs_ci_dentry_ops;
926 else
927 direntry->d_op = &cifs_dentry_ops;
cbac3cba
SF		 928
929 newinode = new_inode(inode->i_sb);
930 if (newinode == NULL)
931 goto mkdir_get_info;
932 /* Is an i_ino of zero legal? */
933 /* Are there sanity checks we can use to ensure that
934 the server is really filling in that field? */
935 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
936 newinode->i_ino =
937 (unsigned long)pInfo->UniqueId;
938 } /* note ino incremented to unique num in new_inode */
fb8c4b14 939 if (inode->i_sb->s_flags & MS_NOATIME)
cbac3cba
SF		 940 newinode->i_flags |= S_NOATIME | S_NOCMTIME;
941 newinode->i_nlink = 2;
942
943 insert_inode_hash(newinode);
2dd29d31 944 d_instantiate(direntry, newinode);
cbac3cba
SF		 945
946 /* we already checked in POSIXCreate whether
947 frame was long enough */
948 posix_fill_in_inode(direntry->d_inode,
2dd29d31 949 pInfo, &obj_type, 1 /* NewInode */);
cbac3cba 950#ifdef CONFIG_CIFS_DEBUG2
fb8c4b14 951 cFYI(1, ("instantiated dentry %p %s to inode %p",
cbac3cba
SF		 952 direntry, direntry->d_name.name, newinode));
953
fb8c4b14
SF		 954 if (newinode->i_nlink != 2)
955 cFYI(1, ("unexpected number of links %d",
cbac3cba
SF		 956 newinode->i_nlink));
957#endif
2dd29d31
SF		 958 }
959 kfree(pInfo);
960 goto mkdir_out;
fb8c4b14 961 }
50c2f753 962
1da177e4 963 /* BB add setting the equivalent of mode via CreateX w/ACLs */
737b758c
SF		 964 rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
965 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 966 if (rc) {
26a21b98 967 cFYI(1, ("cifs_mkdir returned 0x%x", rc));
1da177e4
LT		 968 d_drop(direntry);
969 } else {
fb8c4b14 970mkdir_get_info:
d8c76e6f 971 inc_nlink(inode);
1da177e4
LT		 972 if (pTcon->ses->capabilities & CAP_UNIX)
973 rc = cifs_get_inode_info_unix(&newinode, full_path,
fb8c4b14 974 inode->i_sb, xid);
1da177e4
LT		 975 else
976 rc = cifs_get_inode_info(&newinode, full_path, NULL,
fb8c4b14 977 inode->i_sb, xid);
1da177e4 978
b92327fe
SF		 979 if (pTcon->nocase)
980 direntry->d_op = &cifs_ci_dentry_ops;
981 else
982 direntry->d_op = &cifs_dentry_ops;
1da177e4 983 d_instantiate(direntry, newinode);
2dd29d31 984 /* setting nlink not necessary except in cases where we
fb8c4b14 985 * failed to get it from the server or was set bogus */
2dd29d31 986 if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
fb8c4b14 987 direntry->d_inode->i_nlink = 2;
3ce53fc4
SF		 988 if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) {
989 mode &= ~current->fs->umask;
d0d2f2df 990 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1da177e4
LT		 991 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
992 mode,
83451879
SF		 993 (__u64)current->fsuid,
994 (__u64)current->fsgid,
1da177e4 995 0 /* dev_t */,
737b758c
SF		 996 cifs_sb->local_nls,
997 cifs_sb->mnt_cifs_flags &
998 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 999 } else {
1000 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
1001 mode, (__u64)-1,
1002 (__u64)-1, 0 /* dev_t */,
737b758c 1003 cifs_sb->local_nls,
fb8c4b14 1004 cifs_sb->mnt_cifs_flags &
737b758c 1005 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 1006 }
3ce53fc4 1007 } else {
1da177e4
LT		 1008 /* BB to be implemented via Windows secrty descriptors
1009 eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
1010 -1, -1, local_nls); */
fb8c4b14 1011 if (direntry->d_inode) {
6473a559 1012 direntry->d_inode->i_mode = mode;
25741b3e 1013 direntry->d_inode->i_mode |= S_IFDIR;
fb8c4b14 1014 if (cifs_sb->mnt_cifs_flags &
6473a559 1015 CIFS_MOUNT_SET_UID) {
fb8c4b14 1016 direntry->d_inode->i_uid =
6473a559 1017 current->fsuid;
fb8c4b14 1018 direntry->d_inode->i_gid =
6473a559
SF		 1019 current->fsgid;
1020 }
1021 }
2a138ebb 1022 }
1da177e4 1023 }
fb8c4b14 1024mkdir_out:
1da177e4
LT		 1025 kfree(full_path);
1026 FreeXid(xid);
1027 return rc;
1028}
1029
1030int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1031{
1032 int rc = 0;
1033 int xid;
1034 struct cifs_sb_info *cifs_sb;
1035 struct cifsTconInfo *pTcon;
1036 char *full_path = NULL;
1037 struct cifsInodeInfo *cifsInode;
1038
26a21b98 1039 cFYI(1, ("cifs_rmdir, inode = 0x%p", inode));
1da177e4
LT		 1040
1041 xid = GetXid();
1042
1043 cifs_sb = CIFS_SB(inode->i_sb);
1044 pTcon = cifs_sb->tcon;
1045
7f57356b 1046 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 1047 if (full_path == NULL) {
1048 FreeXid(xid);
1049 return -ENOMEM;
1050 }
1051
737b758c
SF		 1052 rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
1053 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1054
1055 if (!rc) {
9a53c3a7 1056 drop_nlink(inode);
3677db10 1057 spin_lock(&direntry->d_inode->i_lock);
fb8c4b14 1058 i_size_write(direntry->d_inode, 0);
ce71ec36 1059 clear_nlink(direntry->d_inode);
3677db10 1060 spin_unlock(&direntry->d_inode->i_lock);
1da177e4
LT		 1061 }
1062
1063 cifsInode = CIFS_I(direntry->d_inode);
1064 cifsInode->time = 0; /* force revalidate to go get info when
1065 needed */
1066 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1067 current_fs_time(inode->i_sb);
1068
1069 kfree(full_path);
1070 FreeXid(xid);
1071 return rc;
1072}
1073
1074int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
1075 struct inode *target_inode, struct dentry *target_direntry)
1076{
1077 char *fromName;
1078 char *toName;
1079 struct cifs_sb_info *cifs_sb_source;
1080 struct cifs_sb_info *cifs_sb_target;
1081 struct cifsTconInfo *pTcon;
1082 int xid;
1083 int rc = 0;
1084
1085 xid = GetXid();
1086
1087 cifs_sb_target = CIFS_SB(target_inode->i_sb);
1088 cifs_sb_source = CIFS_SB(source_inode->i_sb);
1089 pTcon = cifs_sb_source->tcon;
1090
1091 if (pTcon != cifs_sb_target->tcon) {
1092 FreeXid(xid);
1093 return -EXDEV; /* BB actually could be allowed if same server,
1094 but different share.
1095 Might eventually add support for this */
1096 }
1097
1098 /* we already have the rename sem so we do not need to grab it again
1099 here to protect the path integrity */
7f57356b
SF		 1100 fromName = build_path_from_dentry(source_direntry);
1101 toName = build_path_from_dentry(target_direntry);
1da177e4
LT		 1102 if ((fromName == NULL) || (toName == NULL)) {
1103 rc = -ENOMEM;
1104 goto cifs_rename_exit;
1105 }
1106
1107 rc = CIFSSMBRename(xid, pTcon, fromName, toName,
737b758c
SF		 1108 cifs_sb_source->local_nls,
1109 cifs_sb_source->mnt_cifs_flags &
1110 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1111 if (rc == -EEXIST) {
1112 /* check if they are the same file because rename of hardlinked
1113 files is a noop */
1114 FILE_UNIX_BASIC_INFO *info_buf_source;
1115 FILE_UNIX_BASIC_INFO *info_buf_target;
1116
1117 info_buf_source =
1118 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1119 if (info_buf_source != NULL) {
1120 info_buf_target = info_buf_source + 1;
8e87d4dc
SF		 1121 if (pTcon->ses->capabilities & CAP_UNIX)
1122 rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
fb8c4b14 1123 info_buf_source,
8e87d4dc
SF		 1124 cifs_sb_source->local_nls,
1125 cifs_sb_source->mnt_cifs_flags &
1126 CIFS_MOUNT_MAP_SPECIAL_CHR);
1127 /* else rc is still EEXIST so will fall through to
1128 unlink the target and retry rename */
1da177e4
LT		 1129 if (rc == 0) {
1130 rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
1131 info_buf_target,
737b758c
SF		 1132 cifs_sb_target->local_nls,
1133 /* remap based on source sb */
1134 cifs_sb_source->mnt_cifs_flags &
1135 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1136 }
1137 if ((rc == 0) &&
1138 (info_buf_source->UniqueId ==
1139 info_buf_target->UniqueId)) {
1140 /* do not rename since the files are hardlinked which
1141 is a noop */
1142 } else {
1143 /* we either can not tell the files are hardlinked
1144 (as with Windows servers) or files are not
1145 hardlinked so delete the target manually before
1146 renaming to follow POSIX rather than Windows
1147 semantics */
1148 cifs_unlink(target_inode, target_direntry);
1149 rc = CIFSSMBRename(xid, pTcon, fromName,
1150 toName,
737b758c
SF		 1151 cifs_sb_source->local_nls,
1152 cifs_sb_source->mnt_cifs_flags
1153 & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1154 }
1155 kfree(info_buf_source);
1156 } /* if we can not get memory just leave rc as EEXIST */
1157 }
1158
1159 if (rc) {
1160 cFYI(1, ("rename rc %d", rc));
1161 }
1162
1163 if ((rc == -EIO) || (rc == -EEXIST)) {
1164 int oplock = FALSE;
1165 __u16 netfid;
1166
1167 /* BB FIXME Is Generic Read correct for rename? */
1168 /* if renaming directory - we should not say CREATE_NOT_DIR,
1169 need to test renaming open directory, also GENERIC_READ
1170 might not right be right access to request */
1171 rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
1172 CREATE_NOT_DIR, &netfid, &oplock, NULL,
fb8c4b14
SF		 1173 cifs_sb_source->local_nls,
1174 cifs_sb_source->mnt_cifs_flags &
737b758c 1175 CIFS_MOUNT_MAP_SPECIAL_CHR);
fb8c4b14 1176 if (rc == 0) {
8e87d4dc 1177 rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
fb8c4b14 1178 cifs_sb_source->local_nls,
737b758c
SF		 1179 cifs_sb_source->mnt_cifs_flags &
1180 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1181 CIFSSMBClose(xid, pTcon, netfid);
1182 }
1183 }
1184
1185cifs_rename_exit:
1186 kfree(fromName);
1187 kfree(toName);
1188 FreeXid(xid);
1189 return rc;
1190}
1191
1192int cifs_revalidate(struct dentry *direntry)
1193{
1194 int xid;
1195 int rc = 0;
1196 char *full_path;
1197 struct cifs_sb_info *cifs_sb;
1198 struct cifsInodeInfo *cifsInode;
1199 loff_t local_size;
1200 struct timespec local_mtime;
1201 int invalidate_inode = FALSE;
1202
1203 if (direntry->d_inode == NULL)
1204 return -ENOENT;
1205
1206 cifsInode = CIFS_I(direntry->d_inode);
1207
1208 if (cifsInode == NULL)
1209 return -ENOENT;
1210
1211 /* no sense revalidating inode info on file that no one can write */
1212 if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
1213 return rc;
1214
1215 xid = GetXid();
1216
1217 cifs_sb = CIFS_SB(direntry->d_sb);
1218
1219 /* can not safely grab the rename sem here if rename calls revalidate
1220 since that would deadlock */
7f57356b 1221 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 1222 if (full_path == NULL) {
1223 FreeXid(xid);
1224 return -ENOMEM;
1225 }
1226 cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
1227 "jiffies %ld", full_path, direntry->d_inode,
1228 direntry->d_inode->i_count.counter, direntry,
1229 direntry->d_time, jiffies));
1230
1231 if (cifsInode->time == 0) {
1232 /* was set to zero previously to force revalidate */
1233 } else if (time_before(jiffies, cifsInode->time + HZ) &&
1234 lookupCacheEnabled) {
1235 if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
1236 (direntry->d_inode->i_nlink == 1)) {
1237 kfree(full_path);
1238 FreeXid(xid);
1239 return rc;
1240 } else {
1241 cFYI(1, ("Have to revalidate file due to hardlinks"));
1242 }
1243 }
1244
1245 /* save mtime and size */
1246 local_mtime = direntry->d_inode->i_mtime;
1247 local_size = direntry->d_inode->i_size;
1248
1249 if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) {
1250 rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
fb8c4b14 1251 direntry->d_sb, xid);
1da177e4
LT		 1252 if (rc) {
1253 cFYI(1, ("error on getting revalidate info %d", rc));
1254/* if (rc != -ENOENT)
1255 rc = 0; */ /* BB should we cache info on
1256 certain errors? */
1257 }
1258 } else {
1259 rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
fb8c4b14 1260 direntry->d_sb, xid);
1da177e4
LT		 1261 if (rc) {
1262 cFYI(1, ("error on getting revalidate info %d", rc));
1263/* if (rc != -ENOENT)
1264 rc = 0; */ /* BB should we cache info on
1265 certain errors? */
1266 }
1267 }
1268 /* should we remap certain errors, access denied?, to zero */
1269
1270 /* if not oplocked, we invalidate inode pages if mtime or file size
1271 had changed on server */
1272
fb8c4b14 1273 if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) &&
1da177e4
LT		 1274 (local_size == direntry->d_inode->i_size)) {
1275 cFYI(1, ("cifs_revalidate - inode unchanged"));
1276 } else {
1277 /* file may have changed on server */
1278 if (cifsInode->clientCanCacheRead) {
1279 /* no need to invalidate inode pages since we were the
1280 only ones who could have modified the file and the
1281 server copy is staler than ours */
1282 } else {
1283 invalidate_inode = TRUE;
1284 }
1285 }
1286
1287 /* can not grab this sem since kernel filesys locking documentation
1b1dcc1b
JS		 1288 indicates i_mutex may be taken by the kernel on lookup and rename
1289 which could deadlock if we grab the i_mutex here as well */
1290/* mutex_lock(&direntry->d_inode->i_mutex);*/
1da177e4
LT		 1291 /* need to write out dirty pages here */
1292 if (direntry->d_inode->i_mapping) {
1293 /* do we need to lock inode until after invalidate completes
1294 below? */
1295 filemap_fdatawrite(direntry->d_inode->i_mapping);
1296 }
1297 if (invalidate_inode) {
3abb9272
SF		 1298 /* shrink_dcache not necessary now that cifs dentry ops
1299 are exported for negative dentries */
fb8c4b14 1300/* if (S_ISDIR(direntry->d_inode->i_mode))
3abb9272
SF		 1301 shrink_dcache_parent(direntry); */
1302 if (S_ISREG(direntry->d_inode->i_mode)) {
1303 if (direntry->d_inode->i_mapping)
1304 filemap_fdatawait(direntry->d_inode->i_mapping);
1305 /* may eventually have to do this for open files too */
1306 if (list_empty(&(cifsInode->openFileList))) {
1307 /* changed on server - flush read ahead pages */
1308 cFYI(1, ("Invalidating read ahead data on "
1309 "closed file"));
1310 invalidate_remote_inode(direntry->d_inode);
1311 }
1da177e4
LT		 1312 }
1313 }
1b1dcc1b 1314/* mutex_unlock(&direntry->d_inode->i_mutex); */
50c2f753 1315
1da177e4
LT		 1316 kfree(full_path);
1317 FreeXid(xid);
1318 return rc;
1319}
1320
1321int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1322 struct kstat *stat)
1323{
1324 int err = cifs_revalidate(dentry);
5fe14c85 1325 if (!err) {
1da177e4 1326 generic_fillattr(dentry->d_inode, stat);
5fe14c85
SF		 1327 stat->blksize = CIFS_MAX_MSGSIZE;
1328 }
1da177e4
LT		 1329 return err;
1330}
1331
1332static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1333{
1334 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1335 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1336 struct page *page;
1337 char *kaddr;
1338 int rc = 0;
1339
1340 page = grab_cache_page(mapping, index);
1341 if (!page)
1342 return -ENOMEM;
1343
1344 kaddr = kmap_atomic(page, KM_USER0);
1345 memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset);
1346 flush_dcache_page(page);
1347 kunmap_atomic(kaddr, KM_USER0);
1348 unlock_page(page);
1349 page_cache_release(page);
1350 return rc;
1351}
1352
fb8c4b14 1353static int cifs_vmtruncate(struct inode *inode, loff_t offset)
3677db10
SF		 1354{
1355 struct address_space *mapping = inode->i_mapping;
1356 unsigned long limit;
1357
ba6a46a0 1358 spin_lock(&inode->i_lock);
3677db10
SF		 1359 if (inode->i_size < offset)
1360 goto do_expand;
1361 /*
1362 * truncation of in-use swapfiles is disallowed - it would cause
1363 * subsequent swapout to scribble on the now-freed blocks.
1364 */
ba6a46a0
SF		 1365 if (IS_SWAPFILE(inode)) {
1366 spin_unlock(&inode->i_lock);
3677db10 1367 goto out_busy;
ba6a46a0 1368 }
3677db10
SF		 1369 i_size_write(inode, offset);
1370 spin_unlock(&inode->i_lock);
1371 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
1372 truncate_inode_pages(mapping, offset);
1373 goto out_truncate;
1374
1375do_expand:
1376 limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
ba6a46a0
SF		 1377 if (limit != RLIM_INFINITY && offset > limit) {
1378 spin_unlock(&inode->i_lock);
3677db10 1379 goto out_sig;
ba6a46a0
SF		 1380 }
1381 if (offset > inode->i_sb->s_maxbytes) {
1382 spin_unlock(&inode->i_lock);
3677db10 1383 goto out_big;
ba6a46a0 1384 }
3677db10 1385 i_size_write(inode, offset);
ba6a46a0 1386 spin_unlock(&inode->i_lock);
3677db10
SF		 1387out_truncate:
1388 if (inode->i_op && inode->i_op->truncate)
1389 inode->i_op->truncate(inode);
1390 return 0;
1391out_sig:
1392 send_sig(SIGXFSZ, current, 0);
1393out_big:
1394 return -EFBIG;
1395out_busy:
1396 return -ETXTBSY;
1397}
1398
1da177e4
LT		 1399int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
1400{
1401 int xid;
1402 struct cifs_sb_info *cifs_sb;
1403 struct cifsTconInfo *pTcon;
1404 char *full_path = NULL;
1405 int rc = -EACCES;
1da177e4
LT		 1406 struct cifsFileInfo *open_file = NULL;
1407 FILE_BASIC_INFO time_buf;
1408 int set_time = FALSE;
066fcb06 1409 int set_dosattr = FALSE;
1da177e4
LT		 1410 __u64 mode = 0xFFFFFFFFFFFFFFFFULL;
1411 __u64 uid = 0xFFFFFFFFFFFFFFFFULL;
1412 __u64 gid = 0xFFFFFFFFFFFFFFFFULL;
1413 struct cifsInodeInfo *cifsInode;
1da177e4
LT		 1414
1415 xid = GetXid();
1416
3979877e 1417 cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
1da177e4 1418 direntry->d_name.name, attrs->ia_valid));
6473a559 1419
1da177e4
LT		 1420 cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
1421 pTcon = cifs_sb->tcon;
1422
2a138ebb 1423 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
6473a559
SF		 1424 /* check if we have permission to change attrs */
1425 rc = inode_change_ok(direntry->d_inode, attrs);
fb8c4b14 1426 if (rc < 0) {
6473a559
SF		 1427 FreeXid(xid);
1428 return rc;
1429 } else
1430 rc = 0;
1431 }
50c2f753 1432
7f57356b 1433 full_path = build_path_from_dentry(direntry);
1da177e4
LT		 1434 if (full_path == NULL) {
1435 FreeXid(xid);
1436 return -ENOMEM;
1437 }
1438 cifsInode = CIFS_I(direntry->d_inode);
1439
1440 /* BB check if we need to refresh inode from server now ? BB */
1441
1442 /* need to flush data before changing file size on server */
28fd1298 1443 filemap_write_and_wait(direntry->d_inode->i_mapping);
1da177e4
LT		 1444
1445 if (attrs->ia_valid & ATTR_SIZE) {
1da177e4
LT		 1446 /* To avoid spurious oplock breaks from server, in the case of
1447 inodes that we already have open, avoid doing path based
1448 setting of file size if we can do it by handle.
1449 This keeps our caching token (oplock) and avoids timeouts
1450 when the local oplock break takes longer to flush
1451 writebehind data than the SMB timeout for the SetPathInfo
1452 request would allow */
3979877e 1453
6148a742
SF		 1454 open_file = find_writable_file(cifsInode);
1455 if (open_file) {
1456 __u16 nfid = open_file->netfid;
1457 __u32 npid = open_file->pid;
1458 rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
1459 nfid, npid, FALSE);
23e7dd7d 1460 atomic_dec(&open_file->wrtPending);
fb8c4b14
SF		 1461 cFYI(1, ("SetFSize for attrs rc = %d", rc));
1462 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
6148a742
SF		 1463 int bytes_written;
1464 rc = CIFSSMBWrite(xid, pTcon,
1465 nfid, 0, attrs->ia_size,
1466 &bytes_written, NULL, NULL,
1467 1 /* 45 seconds */);
fb8c4b14 1468 cFYI(1, ("Wrt seteof rc %d", rc));
1da177e4 1469 }
fb8c4b14 1470 } else
6473a559
SF		 1471 rc = -EINVAL;
1472
1da177e4
LT		 1473 if (rc != 0) {
1474 /* Set file size by pathname rather than by handle
1475 either because no valid, writeable file handle for
1476 it was found or because there was an error setting
1477 it by handle */
1478 rc = CIFSSMBSetEOF(xid, pTcon, full_path,
1479 attrs->ia_size, FALSE,
fb8c4b14 1480 cifs_sb->local_nls,
737b758c
SF		 1481 cifs_sb->mnt_cifs_flags &
1482 CIFS_MOUNT_MAP_SPECIAL_CHR);
e30dcf3a 1483 cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
fb8c4b14 1484 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
e30dcf3a
SF		 1485 __u16 netfid;
1486 int oplock = FALSE;
1487
1488 rc = SMBLegacyOpen(xid, pTcon, full_path,
1489 FILE_OPEN,
1490 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1491 CREATE_NOT_DIR, &netfid, &oplock,
1492 NULL, cifs_sb->local_nls,
1493 cifs_sb->mnt_cifs_flags &
1494 CIFS_MOUNT_MAP_SPECIAL_CHR);
fb8c4b14 1495 if (rc == 0) {
e30dcf3a
SF		 1496 int bytes_written;
1497 rc = CIFSSMBWrite(xid, pTcon,
1498 netfid, 0,
1499 attrs->ia_size,
1500 &bytes_written, NULL,
1501 NULL, 1 /* 45 sec */);
fb8c4b14 1502 cFYI(1, ("wrt seteof rc %d", rc));
e30dcf3a
SF		 1503 CIFSSMBClose(xid, pTcon, netfid);
1504 }
1505
1506 }
1da177e4
LT		 1507 }
1508
1509 /* Server is ok setting allocation size implicitly - no need
1510 to call:
1511 CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE,
1512 cifs_sb->local_nls);
1513 */
1514
1515 if (rc == 0) {
3677db10 1516 rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size);
1da177e4
LT		 1517 cifs_truncate_page(direntry->d_inode->i_mapping,
1518 direntry->d_inode->i_size);
fb8c4b14 1519 } else
e30dcf3a 1520 goto cifs_setattr_exit;
1da177e4
LT		 1521 }
1522 if (attrs->ia_valid & ATTR_UID) {
e30dcf3a 1523 cFYI(1, ("UID changed to %d", attrs->ia_uid));
1da177e4 1524 uid = attrs->ia_uid;
1da177e4
LT		 1525 }
1526 if (attrs->ia_valid & ATTR_GID) {
e30dcf3a 1527 cFYI(1, ("GID changed to %d", attrs->ia_gid));
1da177e4 1528 gid = attrs->ia_gid;
1da177e4
LT		 1529 }
1530
1531 time_buf.Attributes = 0;
1532 if (attrs->ia_valid & ATTR_MODE) {
e30dcf3a 1533 cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
1da177e4 1534 mode = attrs->ia_mode;
1da177e4
LT		 1535 }
1536
1537 if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX)
1538 && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
1539 rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
737b758c 1540 0 /* dev_t */, cifs_sb->local_nls,
fb8c4b14 1541 cifs_sb->mnt_cifs_flags &
737b758c 1542 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 1543 else if (attrs->ia_valid & ATTR_MODE) {
cdbce9c8 1544 rc = 0;
1da177e4 1545 if ((mode & S_IWUGO) == 0) /* not writeable */ {
066fcb06
SF		 1546 if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
1547 set_dosattr = TRUE;
1da177e4
LT		 1548 time_buf.Attributes =
1549 cpu_to_le32(cifsInode->cifsAttrs |
1550 ATTR_READONLY);
066fcb06 1551 }
5268df2e
SF		 1552 } else if (cifsInode->cifsAttrs & ATTR_READONLY) {
1553 /* If file is readonly on server, we would
1554 not be able to write to it - so if any write
1555 bit is enabled for user or group or other we
1556 need to at least try to remove r/o dos attr */
1557 set_dosattr = TRUE;
1558 time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs &
1559 (~ATTR_READONLY));
1560 /* Windows ignores set to zero */
fb8c4b14 1561 if (time_buf.Attributes == 0)
5268df2e 1562 time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL);
1da177e4
LT		 1563 }
1564 /* BB to be implemented -
1565 via Windows security descriptors or streams */
1566 /* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid,
1567 cifs_sb->local_nls); */
1568 }
1569
1570 if (attrs->ia_valid & ATTR_ATIME) {
1571 set_time = TRUE;
1572 time_buf.LastAccessTime =
1573 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1574 } else
1575 time_buf.LastAccessTime = 0;
1576
1577 if (attrs->ia_valid & ATTR_MTIME) {
1578 set_time = TRUE;
1579 time_buf.LastWriteTime =
1580 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1581 } else
1582 time_buf.LastWriteTime = 0;
e30dcf3a
SF		 1583 /* Do not set ctime explicitly unless other time
1584 stamps are changed explicitly (i.e. by utime()
1585 since we would then have a mix of client and
1586 server times */
50c2f753 1587
e30dcf3a 1588 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
1da177e4 1589 set_time = TRUE;
e30dcf3a
SF		 1590 /* Although Samba throws this field away
1591 it may be useful to Windows - but we do
1592 not want to set ctime unless some other
1593 timestamp is changing */
26a21b98 1594 cFYI(1, ("CIFS - CTIME changed"));
1da177e4
LT		 1595 time_buf.ChangeTime =
1596 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1597 } else
1598 time_buf.ChangeTime = 0;
1599
066fcb06 1600 if (set_time || set_dosattr) {
1da177e4
LT		 1601 time_buf.CreationTime = 0; /* do not change */
1602 /* In the future we should experiment - try setting timestamps
1603 via Handle (SetFileInfo) instead of by path */
1604 if (!(pTcon->ses->flags & CIFS_SES_NT4))
1605 rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
737b758c
SF		 1606 cifs_sb->local_nls,
1607 cifs_sb->mnt_cifs_flags &
1608 CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4
LT		 1609 else
1610 rc = -EOPNOTSUPP;
1611
1612 if (rc == -EOPNOTSUPP) {
1613 int oplock = FALSE;
1614 __u16 netfid;
1615
1616 cFYI(1, ("calling SetFileInfo since SetPathInfo for "
1617 "times not supported by this server"));
1618 /* BB we could scan to see if we already have it open
1619 and pass in pid of opener to function */
1620 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
1621 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1622 CREATE_NOT_DIR, &netfid, &oplock,
737b758c
SF		 1623 NULL, cifs_sb->local_nls,
1624 cifs_sb->mnt_cifs_flags &
1625 CIFS_MOUNT_MAP_SPECIAL_CHR);
fb8c4b14 1626 if (rc == 0) {
1da177e4
LT		 1627 rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
1628 netfid);
1629 CIFSSMBClose(xid, pTcon, netfid);
1630 } else {
1631 /* BB For even older servers we could convert time_buf
1632 into old DOS style which uses two second
1633 granularity */
1634
1635 /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
fb8c4b14 1636 &time_buf, cifs_sb->local_nls); */
1da177e4
LT		 1637 }
1638 }
e30dcf3a
SF		 1639 /* Even if error on time set, no sense failing the call if
1640 the server would set the time to a reasonable value anyway,
1641 and this check ensures that we are not being called from
1642 sys_utimes in which case we ought to fail the call back to
1643 the user when the server rejects the call */
fb8c4b14 1644 if ((rc) && (attrs->ia_valid &
e30dcf3a
SF		 1645 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
1646 rc = 0;
1da177e4
LT		 1647 }
1648
1649 /* do not need local check to inode_check_ok since the server does
1650 that */
1651 if (!rc)
1652 rc = inode_setattr(direntry->d_inode, attrs);
e30dcf3a 1653cifs_setattr_exit:
1da177e4
LT		 1654 kfree(full_path);
1655 FreeXid(xid);
1656 return rc;
1657}
1658
99ee4dbd 1659#if 0
1da177e4
LT		 1660void cifs_delete_inode(struct inode *inode)
1661{
26a21b98 1662 cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode));
1da177e4
LT		 1663 /* may have to add back in if and when safe distributed caching of
1664 directories added e.g. via FindNotify */
1665}
99ee4dbd 1666#endif
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