Commit | Line | Data |
---|---|---|
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 | ||
32 | int 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 | 218 | static 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 | 292 | static 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 |
321 | int 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 */ | |
579 | void 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 | ||
594 | int 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 | } | |
2d785a50 SF |
623 | |
624 | if ((pTcon->ses->capabilities & CAP_UNIX) && | |
625 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & | |
626 | le64_to_cpu(pTcon->fsUnixInfo.Capability))) { | |
627 | rc = CIFSPOSIXDelFile(xid, pTcon, full_path, | |
628 | SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls, | |
737b758c | 629 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
2d785a50 SF |
630 | cFYI(1, ("posix del rc %d", rc)); |
631 | if ((rc == 0) || (rc == -ENOENT)) | |
632 | goto psx_del_no_retry; | |
633 | } | |
1da177e4 | 634 | |
2d785a50 SF |
635 | rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls, |
636 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
637 | psx_del_no_retry: | |
1da177e4 | 638 | if (!rc) { |
d0d2f2df | 639 | if (direntry->d_inode) |
9a53c3a7 | 640 | drop_nlink(direntry->d_inode); |
1da177e4 LT |
641 | } else if (rc == -ENOENT) { |
642 | d_drop(direntry); | |
643 | } else if (rc == -ETXTBSY) { | |
644 | int oplock = FALSE; | |
645 | __u16 netfid; | |
646 | ||
647 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE, | |
648 | CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE, | |
737b758c | 649 | &netfid, &oplock, NULL, cifs_sb->local_nls, |
fb8c4b14 | 650 | cifs_sb->mnt_cifs_flags & |
737b758c | 651 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
fb8c4b14 | 652 | if (rc == 0) { |
1da177e4 | 653 | CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL, |
fb8c4b14 SF |
654 | cifs_sb->local_nls, |
655 | cifs_sb->mnt_cifs_flags & | |
737b758c | 656 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
1da177e4 | 657 | CIFSSMBClose(xid, pTcon, netfid); |
d0d2f2df | 658 | if (direntry->d_inode) |
9a53c3a7 | 659 | drop_nlink(direntry->d_inode); |
1da177e4 LT |
660 | } |
661 | } else if (rc == -EACCES) { | |
662 | /* try only if r/o attribute set in local lookup data? */ | |
a048d7a8 | 663 | pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL); |
1da177e4 | 664 | if (pinfo_buf) { |
1da177e4 LT |
665 | /* ATTRS set to normal clears r/o bit */ |
666 | pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL); | |
667 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) | |
668 | rc = CIFSSMBSetTimes(xid, pTcon, full_path, | |
669 | pinfo_buf, | |
737b758c | 670 | cifs_sb->local_nls, |
fb8c4b14 | 671 | cifs_sb->mnt_cifs_flags & |
737b758c | 672 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
1da177e4 LT |
673 | else |
674 | rc = -EOPNOTSUPP; | |
675 | ||
676 | if (rc == -EOPNOTSUPP) { | |
677 | int oplock = FALSE; | |
678 | __u16 netfid; | |
679 | /* rc = CIFSSMBSetAttrLegacy(xid, pTcon, | |
680 | full_path, | |
681 | (__u16)ATTR_NORMAL, | |
fb8c4b14 | 682 | cifs_sb->local_nls); |
1da177e4 LT |
683 | For some strange reason it seems that NT4 eats the |
684 | old setattr call without actually setting the | |
685 | attributes so on to the third attempted workaround | |
686 | */ | |
687 | ||
688 | /* BB could scan to see if we already have it open | |
689 | and pass in pid of opener to function */ | |
690 | rc = CIFSSMBOpen(xid, pTcon, full_path, | |
691 | FILE_OPEN, SYNCHRONIZE | | |
692 | FILE_WRITE_ATTRIBUTES, 0, | |
693 | &netfid, &oplock, NULL, | |
737b758c | 694 | cifs_sb->local_nls, |
fb8c4b14 | 695 | cifs_sb->mnt_cifs_flags & |
737b758c | 696 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
fb8c4b14 | 697 | if (rc == 0) { |
1da177e4 LT |
698 | rc = CIFSSMBSetFileTimes(xid, pTcon, |
699 | pinfo_buf, | |
700 | netfid); | |
701 | CIFSSMBClose(xid, pTcon, netfid); | |
702 | } | |
703 | } | |
704 | kfree(pinfo_buf); | |
705 | } | |
fb8c4b14 SF |
706 | if (rc == 0) { |
707 | rc = CIFSSMBDelFile(xid, pTcon, full_path, | |
708 | cifs_sb->local_nls, | |
709 | cifs_sb->mnt_cifs_flags & | |
737b758c | 710 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
1da177e4 | 711 | if (!rc) { |
d0d2f2df | 712 | if (direntry->d_inode) |
9a53c3a7 | 713 | drop_nlink(direntry->d_inode); |
1da177e4 LT |
714 | } else if (rc == -ETXTBSY) { |
715 | int oplock = FALSE; | |
716 | __u16 netfid; | |
717 | ||
718 | rc = CIFSSMBOpen(xid, pTcon, full_path, | |
719 | FILE_OPEN, DELETE, | |
720 | CREATE_NOT_DIR | | |
721 | CREATE_DELETE_ON_CLOSE, | |
722 | &netfid, &oplock, NULL, | |
fb8c4b14 SF |
723 | cifs_sb->local_nls, |
724 | cifs_sb->mnt_cifs_flags & | |
737b758c | 725 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
fb8c4b14 | 726 | if (rc == 0) { |
1da177e4 LT |
727 | CIFSSMBRenameOpenFile(xid, pTcon, |
728 | netfid, NULL, | |
737b758c SF |
729 | cifs_sb->local_nls, |
730 | cifs_sb->mnt_cifs_flags & | |
731 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 | 732 | CIFSSMBClose(xid, pTcon, netfid); |
d0d2f2df | 733 | if (direntry->d_inode) |
9a53c3a7 | 734 | drop_nlink(direntry->d_inode); |
1da177e4 LT |
735 | } |
736 | /* BB if rc = -ETXTBUSY goto the rename logic BB */ | |
737 | } | |
738 | } | |
739 | } | |
d0d2f2df | 740 | if (direntry->d_inode) { |
b2aeb9d5 SF |
741 | cifsInode = CIFS_I(direntry->d_inode); |
742 | cifsInode->time = 0; /* will force revalidate to get info | |
743 | when needed */ | |
744 | direntry->d_inode->i_ctime = current_fs_time(inode->i_sb); | |
745 | } | |
4523cc30 | 746 | if (inode) { |
06bcfedd SF |
747 | inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb); |
748 | cifsInode = CIFS_I(inode); | |
749 | cifsInode->time = 0; /* force revalidate of dir as well */ | |
750 | } | |
1da177e4 LT |
751 | |
752 | kfree(full_path); | |
753 | FreeXid(xid); | |
754 | return rc; | |
755 | } | |
756 | ||
2dd29d31 SF |
757 | static void posix_fill_in_inode(struct inode *tmp_inode, |
758 | FILE_UNIX_BASIC_INFO *pData, int *pobject_type, int isNewInode) | |
759 | { | |
760 | loff_t local_size; | |
761 | struct timespec local_mtime; | |
762 | ||
763 | struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode); | |
764 | struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb); | |
765 | ||
766 | __u32 type = le32_to_cpu(pData->Type); | |
767 | __u64 num_of_bytes = le64_to_cpu(pData->NumOfBytes); | |
768 | __u64 end_of_file = le64_to_cpu(pData->EndOfFile); | |
769 | cifsInfo->time = jiffies; | |
770 | atomic_inc(&cifsInfo->inUse); | |
771 | ||
772 | /* save mtime and size */ | |
773 | local_mtime = tmp_inode->i_mtime; | |
774 | local_size = tmp_inode->i_size; | |
775 | ||
776 | tmp_inode->i_atime = | |
777 | cifs_NTtimeToUnix(le64_to_cpu(pData->LastAccessTime)); | |
778 | tmp_inode->i_mtime = | |
779 | cifs_NTtimeToUnix(le64_to_cpu(pData->LastModificationTime)); | |
780 | tmp_inode->i_ctime = | |
781 | cifs_NTtimeToUnix(le64_to_cpu(pData->LastStatusChange)); | |
782 | ||
783 | tmp_inode->i_mode = le64_to_cpu(pData->Permissions); | |
784 | /* since we set the inode type below we need to mask off type | |
fb8c4b14 SF |
785 | to avoid strange results if bits above were corrupt */ |
786 | tmp_inode->i_mode &= ~S_IFMT; | |
2dd29d31 SF |
787 | if (type == UNIX_FILE) { |
788 | *pobject_type = DT_REG; | |
789 | tmp_inode->i_mode |= S_IFREG; | |
790 | } else if (type == UNIX_SYMLINK) { | |
791 | *pobject_type = DT_LNK; | |
792 | tmp_inode->i_mode |= S_IFLNK; | |
793 | } else if (type == UNIX_DIR) { | |
794 | *pobject_type = DT_DIR; | |
795 | tmp_inode->i_mode |= S_IFDIR; | |
796 | } else if (type == UNIX_CHARDEV) { | |
797 | *pobject_type = DT_CHR; | |
798 | tmp_inode->i_mode |= S_IFCHR; | |
799 | tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor), | |
800 | le64_to_cpu(pData->DevMinor) & MINORMASK); | |
801 | } else if (type == UNIX_BLOCKDEV) { | |
802 | *pobject_type = DT_BLK; | |
803 | tmp_inode->i_mode |= S_IFBLK; | |
804 | tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor), | |
805 | le64_to_cpu(pData->DevMinor) & MINORMASK); | |
806 | } else if (type == UNIX_FIFO) { | |
807 | *pobject_type = DT_FIFO; | |
808 | tmp_inode->i_mode |= S_IFIFO; | |
809 | } else if (type == UNIX_SOCKET) { | |
810 | *pobject_type = DT_SOCK; | |
811 | tmp_inode->i_mode |= S_IFSOCK; | |
812 | } else { | |
813 | /* safest to just call it a file */ | |
814 | *pobject_type = DT_REG; | |
815 | tmp_inode->i_mode |= S_IFREG; | |
fb8c4b14 | 816 | cFYI(1, ("unknown inode type %d", type)); |
2dd29d31 SF |
817 | } |
818 | ||
cbac3cba | 819 | #ifdef CONFIG_CIFS_DEBUG2 |
fb8c4b14 | 820 | cFYI(1, ("object type: %d", type)); |
cbac3cba | 821 | #endif |
2dd29d31 SF |
822 | tmp_inode->i_uid = le64_to_cpu(pData->Uid); |
823 | tmp_inode->i_gid = le64_to_cpu(pData->Gid); | |
824 | tmp_inode->i_nlink = le64_to_cpu(pData->Nlinks); | |
825 | ||
826 | spin_lock(&tmp_inode->i_lock); | |
827 | if (is_size_safe_to_change(cifsInfo, end_of_file)) { | |
fb8c4b14 | 828 | /* can not safely change the file size here if the |
2dd29d31 SF |
829 | client is writing to it due to potential races */ |
830 | i_size_write(tmp_inode, end_of_file); | |
831 | ||
832 | /* 512 bytes (2**9) is the fake blocksize that must be used */ | |
833 | /* for this calculation, not the real blocksize */ | |
834 | tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9; | |
835 | } | |
836 | spin_unlock(&tmp_inode->i_lock); | |
837 | ||
838 | if (S_ISREG(tmp_inode->i_mode)) { | |
839 | cFYI(1, ("File inode")); | |
840 | tmp_inode->i_op = &cifs_file_inode_ops; | |
841 | ||
fb8c4b14 SF |
842 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { |
843 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) | |
2dd29d31 SF |
844 | tmp_inode->i_fop = &cifs_file_direct_nobrl_ops; |
845 | else | |
846 | tmp_inode->i_fop = &cifs_file_direct_ops; | |
50c2f753 | 847 | |
fb8c4b14 | 848 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
2dd29d31 SF |
849 | tmp_inode->i_fop = &cifs_file_nobrl_ops; |
850 | else | |
851 | tmp_inode->i_fop = &cifs_file_ops; | |
852 | ||
fb8c4b14 SF |
853 | if ((cifs_sb->tcon) && (cifs_sb->tcon->ses) && |
854 | (cifs_sb->tcon->ses->server->maxBuf < | |
2dd29d31 SF |
855 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)) |
856 | tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf; | |
857 | else | |
858 | tmp_inode->i_data.a_ops = &cifs_addr_ops; | |
859 | ||
fb8c4b14 SF |
860 | if (isNewInode) |
861 | return; /* No sense invalidating pages for new inode | |
862 | since we we have not started caching | |
863 | readahead file data yet */ | |
2dd29d31 SF |
864 | |
865 | if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) && | |
866 | (local_size == tmp_inode->i_size)) { | |
867 | cFYI(1, ("inode exists but unchanged")); | |
868 | } else { | |
869 | /* file may have changed on server */ | |
870 | cFYI(1, ("invalidate inode, readdir detected change")); | |
871 | invalidate_remote_inode(tmp_inode); | |
872 | } | |
873 | } else if (S_ISDIR(tmp_inode->i_mode)) { | |
874 | cFYI(1, ("Directory inode")); | |
875 | tmp_inode->i_op = &cifs_dir_inode_ops; | |
876 | tmp_inode->i_fop = &cifs_dir_ops; | |
877 | } else if (S_ISLNK(tmp_inode->i_mode)) { | |
878 | cFYI(1, ("Symbolic Link inode")); | |
879 | tmp_inode->i_op = &cifs_symlink_inode_ops; | |
880 | /* tmp_inode->i_fop = *//* do not need to set to anything */ | |
881 | } else { | |
fb8c4b14 | 882 | cFYI(1, ("Special inode")); |
2dd29d31 SF |
883 | init_special_inode(tmp_inode, tmp_inode->i_mode, |
884 | tmp_inode->i_rdev); | |
fb8c4b14 | 885 | } |
2dd29d31 SF |
886 | } |
887 | ||
1da177e4 LT |
888 | int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) |
889 | { | |
890 | int rc = 0; | |
891 | int xid; | |
892 | struct cifs_sb_info *cifs_sb; | |
893 | struct cifsTconInfo *pTcon; | |
894 | char *full_path = NULL; | |
895 | struct inode *newinode = NULL; | |
896 | ||
6473a559 | 897 | cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode)); |
1da177e4 LT |
898 | |
899 | xid = GetXid(); | |
900 | ||
901 | cifs_sb = CIFS_SB(inode->i_sb); | |
902 | pTcon = cifs_sb->tcon; | |
903 | ||
7f57356b | 904 | full_path = build_path_from_dentry(direntry); |
1da177e4 LT |
905 | if (full_path == NULL) { |
906 | FreeXid(xid); | |
907 | return -ENOMEM; | |
908 | } | |
50c2f753 | 909 | |
fb8c4b14 SF |
910 | if ((pTcon->ses->capabilities & CAP_UNIX) && |
911 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & | |
2dd29d31 SF |
912 | le64_to_cpu(pTcon->fsUnixInfo.Capability))) { |
913 | u32 oplock = 0; | |
fb8c4b14 | 914 | FILE_UNIX_BASIC_INFO * pInfo = |
2dd29d31 | 915 | kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
fb8c4b14 | 916 | if (pInfo == NULL) { |
2dd29d31 SF |
917 | rc = -ENOMEM; |
918 | goto mkdir_out; | |
919 | } | |
50c2f753 | 920 | |
2dd29d31 SF |
921 | rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT, |
922 | mode, NULL /* netfid */, pInfo, &oplock, | |
fb8c4b14 SF |
923 | full_path, cifs_sb->local_nls, |
924 | cifs_sb->mnt_cifs_flags & | |
2dd29d31 SF |
925 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
926 | if (rc) { | |
927 | cFYI(1, ("posix mkdir returned 0x%x", rc)); | |
928 | d_drop(direntry); | |
929 | } else { | |
cbac3cba | 930 | int obj_type; |
2dd29d31 | 931 | if (pInfo->Type == -1) /* no return info - go query */ |
fb8c4b14 SF |
932 | goto mkdir_get_info; |
933 | /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need | |
934 | to set uid/gid */ | |
2dd29d31 SF |
935 | inc_nlink(inode); |
936 | if (pTcon->nocase) | |
937 | direntry->d_op = &cifs_ci_dentry_ops; | |
938 | else | |
939 | direntry->d_op = &cifs_dentry_ops; | |
cbac3cba SF |
940 | |
941 | newinode = new_inode(inode->i_sb); | |
942 | if (newinode == NULL) | |
943 | goto mkdir_get_info; | |
944 | /* Is an i_ino of zero legal? */ | |
945 | /* Are there sanity checks we can use to ensure that | |
946 | the server is really filling in that field? */ | |
947 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { | |
948 | newinode->i_ino = | |
949 | (unsigned long)pInfo->UniqueId; | |
950 | } /* note ino incremented to unique num in new_inode */ | |
fb8c4b14 | 951 | if (inode->i_sb->s_flags & MS_NOATIME) |
cbac3cba SF |
952 | newinode->i_flags |= S_NOATIME | S_NOCMTIME; |
953 | newinode->i_nlink = 2; | |
954 | ||
955 | insert_inode_hash(newinode); | |
2dd29d31 | 956 | d_instantiate(direntry, newinode); |
cbac3cba SF |
957 | |
958 | /* we already checked in POSIXCreate whether | |
959 | frame was long enough */ | |
960 | posix_fill_in_inode(direntry->d_inode, | |
2dd29d31 | 961 | pInfo, &obj_type, 1 /* NewInode */); |
cbac3cba | 962 | #ifdef CONFIG_CIFS_DEBUG2 |
fb8c4b14 | 963 | cFYI(1, ("instantiated dentry %p %s to inode %p", |
cbac3cba SF |
964 | direntry, direntry->d_name.name, newinode)); |
965 | ||
fb8c4b14 SF |
966 | if (newinode->i_nlink != 2) |
967 | cFYI(1, ("unexpected number of links %d", | |
cbac3cba SF |
968 | newinode->i_nlink)); |
969 | #endif | |
2dd29d31 SF |
970 | } |
971 | kfree(pInfo); | |
972 | goto mkdir_out; | |
fb8c4b14 | 973 | } |
50c2f753 | 974 | |
1da177e4 | 975 | /* BB add setting the equivalent of mode via CreateX w/ACLs */ |
737b758c SF |
976 | rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls, |
977 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 | 978 | if (rc) { |
26a21b98 | 979 | cFYI(1, ("cifs_mkdir returned 0x%x", rc)); |
1da177e4 LT |
980 | d_drop(direntry); |
981 | } else { | |
fb8c4b14 | 982 | mkdir_get_info: |
d8c76e6f | 983 | inc_nlink(inode); |
1da177e4 LT |
984 | if (pTcon->ses->capabilities & CAP_UNIX) |
985 | rc = cifs_get_inode_info_unix(&newinode, full_path, | |
fb8c4b14 | 986 | inode->i_sb, xid); |
1da177e4 LT |
987 | else |
988 | rc = cifs_get_inode_info(&newinode, full_path, NULL, | |
fb8c4b14 | 989 | inode->i_sb, xid); |
1da177e4 | 990 | |
b92327fe SF |
991 | if (pTcon->nocase) |
992 | direntry->d_op = &cifs_ci_dentry_ops; | |
993 | else | |
994 | direntry->d_op = &cifs_dentry_ops; | |
1da177e4 | 995 | d_instantiate(direntry, newinode); |
2dd29d31 | 996 | /* setting nlink not necessary except in cases where we |
fb8c4b14 | 997 | * failed to get it from the server or was set bogus */ |
2dd29d31 | 998 | if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2)) |
fb8c4b14 | 999 | direntry->d_inode->i_nlink = 2; |
3ce53fc4 SF |
1000 | if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) { |
1001 | mode &= ~current->fs->umask; | |
d0d2f2df | 1002 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
1da177e4 LT |
1003 | CIFSSMBUnixSetPerms(xid, pTcon, full_path, |
1004 | mode, | |
83451879 SF |
1005 | (__u64)current->fsuid, |
1006 | (__u64)current->fsgid, | |
1da177e4 | 1007 | 0 /* dev_t */, |
737b758c SF |
1008 | cifs_sb->local_nls, |
1009 | cifs_sb->mnt_cifs_flags & | |
1010 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
1011 | } else { |
1012 | CIFSSMBUnixSetPerms(xid, pTcon, full_path, | |
1013 | mode, (__u64)-1, | |
1014 | (__u64)-1, 0 /* dev_t */, | |
737b758c | 1015 | cifs_sb->local_nls, |
fb8c4b14 | 1016 | cifs_sb->mnt_cifs_flags & |
737b758c | 1017 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
1da177e4 | 1018 | } |
3ce53fc4 | 1019 | } else { |
1da177e4 LT |
1020 | /* BB to be implemented via Windows secrty descriptors |
1021 | eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, | |
1022 | -1, -1, local_nls); */ | |
fb8c4b14 | 1023 | if (direntry->d_inode) { |
6473a559 | 1024 | direntry->d_inode->i_mode = mode; |
25741b3e | 1025 | direntry->d_inode->i_mode |= S_IFDIR; |
fb8c4b14 | 1026 | if (cifs_sb->mnt_cifs_flags & |
6473a559 | 1027 | CIFS_MOUNT_SET_UID) { |
fb8c4b14 | 1028 | direntry->d_inode->i_uid = |
6473a559 | 1029 | current->fsuid; |
fb8c4b14 | 1030 | direntry->d_inode->i_gid = |
6473a559 SF |
1031 | current->fsgid; |
1032 | } | |
1033 | } | |
2a138ebb | 1034 | } |
1da177e4 | 1035 | } |
fb8c4b14 | 1036 | mkdir_out: |
1da177e4 LT |
1037 | kfree(full_path); |
1038 | FreeXid(xid); | |
1039 | return rc; | |
1040 | } | |
1041 | ||
1042 | int cifs_rmdir(struct inode *inode, struct dentry *direntry) | |
1043 | { | |
1044 | int rc = 0; | |
1045 | int xid; | |
1046 | struct cifs_sb_info *cifs_sb; | |
1047 | struct cifsTconInfo *pTcon; | |
1048 | char *full_path = NULL; | |
1049 | struct cifsInodeInfo *cifsInode; | |
1050 | ||
26a21b98 | 1051 | cFYI(1, ("cifs_rmdir, inode = 0x%p", inode)); |
1da177e4 LT |
1052 | |
1053 | xid = GetXid(); | |
1054 | ||
1055 | cifs_sb = CIFS_SB(inode->i_sb); | |
1056 | pTcon = cifs_sb->tcon; | |
1057 | ||
7f57356b | 1058 | full_path = build_path_from_dentry(direntry); |
1da177e4 LT |
1059 | if (full_path == NULL) { |
1060 | FreeXid(xid); | |
1061 | return -ENOMEM; | |
1062 | } | |
1063 | ||
737b758c SF |
1064 | rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, |
1065 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
1066 | |
1067 | if (!rc) { | |
9a53c3a7 | 1068 | drop_nlink(inode); |
3677db10 | 1069 | spin_lock(&direntry->d_inode->i_lock); |
fb8c4b14 | 1070 | i_size_write(direntry->d_inode, 0); |
ce71ec36 | 1071 | clear_nlink(direntry->d_inode); |
3677db10 | 1072 | spin_unlock(&direntry->d_inode->i_lock); |
1da177e4 LT |
1073 | } |
1074 | ||
1075 | cifsInode = CIFS_I(direntry->d_inode); | |
1076 | cifsInode->time = 0; /* force revalidate to go get info when | |
1077 | needed */ | |
1078 | direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = | |
1079 | current_fs_time(inode->i_sb); | |
1080 | ||
1081 | kfree(full_path); | |
1082 | FreeXid(xid); | |
1083 | return rc; | |
1084 | } | |
1085 | ||
1086 | int cifs_rename(struct inode *source_inode, struct dentry *source_direntry, | |
1087 | struct inode *target_inode, struct dentry *target_direntry) | |
1088 | { | |
1089 | char *fromName; | |
1090 | char *toName; | |
1091 | struct cifs_sb_info *cifs_sb_source; | |
1092 | struct cifs_sb_info *cifs_sb_target; | |
1093 | struct cifsTconInfo *pTcon; | |
1094 | int xid; | |
1095 | int rc = 0; | |
1096 | ||
1097 | xid = GetXid(); | |
1098 | ||
1099 | cifs_sb_target = CIFS_SB(target_inode->i_sb); | |
1100 | cifs_sb_source = CIFS_SB(source_inode->i_sb); | |
1101 | pTcon = cifs_sb_source->tcon; | |
1102 | ||
1103 | if (pTcon != cifs_sb_target->tcon) { | |
1104 | FreeXid(xid); | |
1105 | return -EXDEV; /* BB actually could be allowed if same server, | |
1106 | but different share. | |
1107 | Might eventually add support for this */ | |
1108 | } | |
1109 | ||
1110 | /* we already have the rename sem so we do not need to grab it again | |
1111 | here to protect the path integrity */ | |
7f57356b SF |
1112 | fromName = build_path_from_dentry(source_direntry); |
1113 | toName = build_path_from_dentry(target_direntry); | |
1da177e4 LT |
1114 | if ((fromName == NULL) || (toName == NULL)) { |
1115 | rc = -ENOMEM; | |
1116 | goto cifs_rename_exit; | |
1117 | } | |
1118 | ||
1119 | rc = CIFSSMBRename(xid, pTcon, fromName, toName, | |
737b758c SF |
1120 | cifs_sb_source->local_nls, |
1121 | cifs_sb_source->mnt_cifs_flags & | |
1122 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
1123 | if (rc == -EEXIST) { |
1124 | /* check if they are the same file because rename of hardlinked | |
1125 | files is a noop */ | |
1126 | FILE_UNIX_BASIC_INFO *info_buf_source; | |
1127 | FILE_UNIX_BASIC_INFO *info_buf_target; | |
1128 | ||
1129 | info_buf_source = | |
1130 | kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); | |
1131 | if (info_buf_source != NULL) { | |
1132 | info_buf_target = info_buf_source + 1; | |
8e87d4dc SF |
1133 | if (pTcon->ses->capabilities & CAP_UNIX) |
1134 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName, | |
fb8c4b14 | 1135 | info_buf_source, |
8e87d4dc SF |
1136 | cifs_sb_source->local_nls, |
1137 | cifs_sb_source->mnt_cifs_flags & | |
1138 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1139 | /* else rc is still EEXIST so will fall through to | |
1140 | unlink the target and retry rename */ | |
1da177e4 LT |
1141 | if (rc == 0) { |
1142 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName, | |
1143 | info_buf_target, | |
737b758c SF |
1144 | cifs_sb_target->local_nls, |
1145 | /* remap based on source sb */ | |
1146 | cifs_sb_source->mnt_cifs_flags & | |
1147 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
1148 | } |
1149 | if ((rc == 0) && | |
1150 | (info_buf_source->UniqueId == | |
1151 | info_buf_target->UniqueId)) { | |
1152 | /* do not rename since the files are hardlinked which | |
1153 | is a noop */ | |
1154 | } else { | |
1155 | /* we either can not tell the files are hardlinked | |
1156 | (as with Windows servers) or files are not | |
1157 | hardlinked so delete the target manually before | |
1158 | renaming to follow POSIX rather than Windows | |
1159 | semantics */ | |
1160 | cifs_unlink(target_inode, target_direntry); | |
1161 | rc = CIFSSMBRename(xid, pTcon, fromName, | |
1162 | toName, | |
737b758c SF |
1163 | cifs_sb_source->local_nls, |
1164 | cifs_sb_source->mnt_cifs_flags | |
1165 | & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
1166 | } |
1167 | kfree(info_buf_source); | |
1168 | } /* if we can not get memory just leave rc as EEXIST */ | |
1169 | } | |
1170 | ||
1171 | if (rc) { | |
1172 | cFYI(1, ("rename rc %d", rc)); | |
1173 | } | |
1174 | ||
1175 | if ((rc == -EIO) || (rc == -EEXIST)) { | |
1176 | int oplock = FALSE; | |
1177 | __u16 netfid; | |
1178 | ||
1179 | /* BB FIXME Is Generic Read correct for rename? */ | |
1180 | /* if renaming directory - we should not say CREATE_NOT_DIR, | |
1181 | need to test renaming open directory, also GENERIC_READ | |
1182 | might not right be right access to request */ | |
1183 | rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ, | |
1184 | CREATE_NOT_DIR, &netfid, &oplock, NULL, | |
fb8c4b14 SF |
1185 | cifs_sb_source->local_nls, |
1186 | cifs_sb_source->mnt_cifs_flags & | |
737b758c | 1187 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
fb8c4b14 | 1188 | if (rc == 0) { |
8e87d4dc | 1189 | rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName, |
fb8c4b14 | 1190 | cifs_sb_source->local_nls, |
737b758c SF |
1191 | cifs_sb_source->mnt_cifs_flags & |
1192 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
1193 | CIFSSMBClose(xid, pTcon, netfid); |
1194 | } | |
1195 | } | |
1196 | ||
1197 | cifs_rename_exit: | |
1198 | kfree(fromName); | |
1199 | kfree(toName); | |
1200 | FreeXid(xid); | |
1201 | return rc; | |
1202 | } | |
1203 | ||
1204 | int cifs_revalidate(struct dentry *direntry) | |
1205 | { | |
1206 | int xid; | |
1207 | int rc = 0; | |
1208 | char *full_path; | |
1209 | struct cifs_sb_info *cifs_sb; | |
1210 | struct cifsInodeInfo *cifsInode; | |
1211 | loff_t local_size; | |
1212 | struct timespec local_mtime; | |
1213 | int invalidate_inode = FALSE; | |
1214 | ||
1215 | if (direntry->d_inode == NULL) | |
1216 | return -ENOENT; | |
1217 | ||
1218 | cifsInode = CIFS_I(direntry->d_inode); | |
1219 | ||
1220 | if (cifsInode == NULL) | |
1221 | return -ENOENT; | |
1222 | ||
1223 | /* no sense revalidating inode info on file that no one can write */ | |
1224 | if (CIFS_I(direntry->d_inode)->clientCanCacheRead) | |
1225 | return rc; | |
1226 | ||
1227 | xid = GetXid(); | |
1228 | ||
1229 | cifs_sb = CIFS_SB(direntry->d_sb); | |
1230 | ||
1231 | /* can not safely grab the rename sem here if rename calls revalidate | |
1232 | since that would deadlock */ | |
7f57356b | 1233 | full_path = build_path_from_dentry(direntry); |
1da177e4 LT |
1234 | if (full_path == NULL) { |
1235 | FreeXid(xid); | |
1236 | return -ENOMEM; | |
1237 | } | |
1238 | cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld " | |
1239 | "jiffies %ld", full_path, direntry->d_inode, | |
1240 | direntry->d_inode->i_count.counter, direntry, | |
1241 | direntry->d_time, jiffies)); | |
1242 | ||
1243 | if (cifsInode->time == 0) { | |
1244 | /* was set to zero previously to force revalidate */ | |
1245 | } else if (time_before(jiffies, cifsInode->time + HZ) && | |
1246 | lookupCacheEnabled) { | |
1247 | if ((S_ISREG(direntry->d_inode->i_mode) == 0) || | |
1248 | (direntry->d_inode->i_nlink == 1)) { | |
1249 | kfree(full_path); | |
1250 | FreeXid(xid); | |
1251 | return rc; | |
1252 | } else { | |
1253 | cFYI(1, ("Have to revalidate file due to hardlinks")); | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | /* save mtime and size */ | |
1258 | local_mtime = direntry->d_inode->i_mtime; | |
1259 | local_size = direntry->d_inode->i_size; | |
1260 | ||
1261 | if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) { | |
1262 | rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path, | |
fb8c4b14 | 1263 | direntry->d_sb, xid); |
1da177e4 LT |
1264 | if (rc) { |
1265 | cFYI(1, ("error on getting revalidate info %d", rc)); | |
1266 | /* if (rc != -ENOENT) | |
1267 | rc = 0; */ /* BB should we cache info on | |
1268 | certain errors? */ | |
1269 | } | |
1270 | } else { | |
1271 | rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL, | |
fb8c4b14 | 1272 | direntry->d_sb, xid); |
1da177e4 LT |
1273 | if (rc) { |
1274 | cFYI(1, ("error on getting revalidate info %d", rc)); | |
1275 | /* if (rc != -ENOENT) | |
1276 | rc = 0; */ /* BB should we cache info on | |
1277 | certain errors? */ | |
1278 | } | |
1279 | } | |
1280 | /* should we remap certain errors, access denied?, to zero */ | |
1281 | ||
1282 | /* if not oplocked, we invalidate inode pages if mtime or file size | |
1283 | had changed on server */ | |
1284 | ||
fb8c4b14 | 1285 | if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) && |
1da177e4 LT |
1286 | (local_size == direntry->d_inode->i_size)) { |
1287 | cFYI(1, ("cifs_revalidate - inode unchanged")); | |
1288 | } else { | |
1289 | /* file may have changed on server */ | |
1290 | if (cifsInode->clientCanCacheRead) { | |
1291 | /* no need to invalidate inode pages since we were the | |
1292 | only ones who could have modified the file and the | |
1293 | server copy is staler than ours */ | |
1294 | } else { | |
1295 | invalidate_inode = TRUE; | |
1296 | } | |
1297 | } | |
1298 | ||
1299 | /* can not grab this sem since kernel filesys locking documentation | |
1b1dcc1b JS |
1300 | indicates i_mutex may be taken by the kernel on lookup and rename |
1301 | which could deadlock if we grab the i_mutex here as well */ | |
1302 | /* mutex_lock(&direntry->d_inode->i_mutex);*/ | |
1da177e4 LT |
1303 | /* need to write out dirty pages here */ |
1304 | if (direntry->d_inode->i_mapping) { | |
1305 | /* do we need to lock inode until after invalidate completes | |
1306 | below? */ | |
1307 | filemap_fdatawrite(direntry->d_inode->i_mapping); | |
1308 | } | |
1309 | if (invalidate_inode) { | |
3abb9272 SF |
1310 | /* shrink_dcache not necessary now that cifs dentry ops |
1311 | are exported for negative dentries */ | |
fb8c4b14 | 1312 | /* if (S_ISDIR(direntry->d_inode->i_mode)) |
3abb9272 SF |
1313 | shrink_dcache_parent(direntry); */ |
1314 | if (S_ISREG(direntry->d_inode->i_mode)) { | |
1315 | if (direntry->d_inode->i_mapping) | |
1316 | filemap_fdatawait(direntry->d_inode->i_mapping); | |
1317 | /* may eventually have to do this for open files too */ | |
1318 | if (list_empty(&(cifsInode->openFileList))) { | |
1319 | /* changed on server - flush read ahead pages */ | |
1320 | cFYI(1, ("Invalidating read ahead data on " | |
1321 | "closed file")); | |
1322 | invalidate_remote_inode(direntry->d_inode); | |
1323 | } | |
1da177e4 LT |
1324 | } |
1325 | } | |
1b1dcc1b | 1326 | /* mutex_unlock(&direntry->d_inode->i_mutex); */ |
50c2f753 | 1327 | |
1da177e4 LT |
1328 | kfree(full_path); |
1329 | FreeXid(xid); | |
1330 | return rc; | |
1331 | } | |
1332 | ||
1333 | int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
1334 | struct kstat *stat) | |
1335 | { | |
1336 | int err = cifs_revalidate(dentry); | |
5fe14c85 | 1337 | if (!err) { |
1da177e4 | 1338 | generic_fillattr(dentry->d_inode, stat); |
5fe14c85 SF |
1339 | stat->blksize = CIFS_MAX_MSGSIZE; |
1340 | } | |
1da177e4 LT |
1341 | return err; |
1342 | } | |
1343 | ||
1344 | static int cifs_truncate_page(struct address_space *mapping, loff_t from) | |
1345 | { | |
1346 | pgoff_t index = from >> PAGE_CACHE_SHIFT; | |
1347 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); | |
1348 | struct page *page; | |
1da177e4 LT |
1349 | int rc = 0; |
1350 | ||
1351 | page = grab_cache_page(mapping, index); | |
1352 | if (!page) | |
1353 | return -ENOMEM; | |
1354 | ||
7e42ca88 | 1355 | zero_user_page(page, offset, PAGE_CACHE_SIZE - offset, KM_USER0); |
1da177e4 LT |
1356 | unlock_page(page); |
1357 | page_cache_release(page); | |
1358 | return rc; | |
1359 | } | |
1360 | ||
fb8c4b14 | 1361 | static int cifs_vmtruncate(struct inode *inode, loff_t offset) |
3677db10 SF |
1362 | { |
1363 | struct address_space *mapping = inode->i_mapping; | |
1364 | unsigned long limit; | |
1365 | ||
ba6a46a0 | 1366 | spin_lock(&inode->i_lock); |
3677db10 SF |
1367 | if (inode->i_size < offset) |
1368 | goto do_expand; | |
1369 | /* | |
1370 | * truncation of in-use swapfiles is disallowed - it would cause | |
1371 | * subsequent swapout to scribble on the now-freed blocks. | |
1372 | */ | |
ba6a46a0 SF |
1373 | if (IS_SWAPFILE(inode)) { |
1374 | spin_unlock(&inode->i_lock); | |
3677db10 | 1375 | goto out_busy; |
ba6a46a0 | 1376 | } |
3677db10 SF |
1377 | i_size_write(inode, offset); |
1378 | spin_unlock(&inode->i_lock); | |
1379 | unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); | |
1380 | truncate_inode_pages(mapping, offset); | |
1381 | goto out_truncate; | |
1382 | ||
1383 | do_expand: | |
1384 | limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur; | |
ba6a46a0 SF |
1385 | if (limit != RLIM_INFINITY && offset > limit) { |
1386 | spin_unlock(&inode->i_lock); | |
3677db10 | 1387 | goto out_sig; |
ba6a46a0 SF |
1388 | } |
1389 | if (offset > inode->i_sb->s_maxbytes) { | |
1390 | spin_unlock(&inode->i_lock); | |
3677db10 | 1391 | goto out_big; |
ba6a46a0 | 1392 | } |
3677db10 | 1393 | i_size_write(inode, offset); |
ba6a46a0 | 1394 | spin_unlock(&inode->i_lock); |
3677db10 SF |
1395 | out_truncate: |
1396 | if (inode->i_op && inode->i_op->truncate) | |
1397 | inode->i_op->truncate(inode); | |
1398 | return 0; | |
1399 | out_sig: | |
1400 | send_sig(SIGXFSZ, current, 0); | |
1401 | out_big: | |
1402 | return -EFBIG; | |
1403 | out_busy: | |
1404 | return -ETXTBSY; | |
1405 | } | |
1406 | ||
1da177e4 LT |
1407 | int cifs_setattr(struct dentry *direntry, struct iattr *attrs) |
1408 | { | |
1409 | int xid; | |
1410 | struct cifs_sb_info *cifs_sb; | |
1411 | struct cifsTconInfo *pTcon; | |
1412 | char *full_path = NULL; | |
1413 | int rc = -EACCES; | |
1da177e4 LT |
1414 | struct cifsFileInfo *open_file = NULL; |
1415 | FILE_BASIC_INFO time_buf; | |
1416 | int set_time = FALSE; | |
066fcb06 | 1417 | int set_dosattr = FALSE; |
1da177e4 LT |
1418 | __u64 mode = 0xFFFFFFFFFFFFFFFFULL; |
1419 | __u64 uid = 0xFFFFFFFFFFFFFFFFULL; | |
1420 | __u64 gid = 0xFFFFFFFFFFFFFFFFULL; | |
1421 | struct cifsInodeInfo *cifsInode; | |
1da177e4 LT |
1422 | |
1423 | xid = GetXid(); | |
1424 | ||
3979877e | 1425 | cFYI(1, ("setattr on file %s attrs->iavalid 0x%x", |
1da177e4 | 1426 | direntry->d_name.name, attrs->ia_valid)); |
6473a559 | 1427 | |
1da177e4 LT |
1428 | cifs_sb = CIFS_SB(direntry->d_inode->i_sb); |
1429 | pTcon = cifs_sb->tcon; | |
1430 | ||
2a138ebb | 1431 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) { |
6473a559 SF |
1432 | /* check if we have permission to change attrs */ |
1433 | rc = inode_change_ok(direntry->d_inode, attrs); | |
fb8c4b14 | 1434 | if (rc < 0) { |
6473a559 SF |
1435 | FreeXid(xid); |
1436 | return rc; | |
1437 | } else | |
1438 | rc = 0; | |
1439 | } | |
50c2f753 | 1440 | |
7f57356b | 1441 | full_path = build_path_from_dentry(direntry); |
1da177e4 LT |
1442 | if (full_path == NULL) { |
1443 | FreeXid(xid); | |
1444 | return -ENOMEM; | |
1445 | } | |
1446 | cifsInode = CIFS_I(direntry->d_inode); | |
1447 | ||
1448 | /* BB check if we need to refresh inode from server now ? BB */ | |
1449 | ||
1450 | /* need to flush data before changing file size on server */ | |
28fd1298 | 1451 | filemap_write_and_wait(direntry->d_inode->i_mapping); |
1da177e4 LT |
1452 | |
1453 | if (attrs->ia_valid & ATTR_SIZE) { | |
1da177e4 LT |
1454 | /* To avoid spurious oplock breaks from server, in the case of |
1455 | inodes that we already have open, avoid doing path based | |
1456 | setting of file size if we can do it by handle. | |
1457 | This keeps our caching token (oplock) and avoids timeouts | |
1458 | when the local oplock break takes longer to flush | |
1459 | writebehind data than the SMB timeout for the SetPathInfo | |
1460 | request would allow */ | |
3979877e | 1461 | |
6148a742 SF |
1462 | open_file = find_writable_file(cifsInode); |
1463 | if (open_file) { | |
1464 | __u16 nfid = open_file->netfid; | |
1465 | __u32 npid = open_file->pid; | |
1466 | rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, | |
1467 | nfid, npid, FALSE); | |
23e7dd7d | 1468 | atomic_dec(&open_file->wrtPending); |
fb8c4b14 SF |
1469 | cFYI(1, ("SetFSize for attrs rc = %d", rc)); |
1470 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { | |
6148a742 SF |
1471 | int bytes_written; |
1472 | rc = CIFSSMBWrite(xid, pTcon, | |
1473 | nfid, 0, attrs->ia_size, | |
1474 | &bytes_written, NULL, NULL, | |
1475 | 1 /* 45 seconds */); | |
fb8c4b14 | 1476 | cFYI(1, ("Wrt seteof rc %d", rc)); |
1da177e4 | 1477 | } |
fb8c4b14 | 1478 | } else |
6473a559 SF |
1479 | rc = -EINVAL; |
1480 | ||
1da177e4 LT |
1481 | if (rc != 0) { |
1482 | /* Set file size by pathname rather than by handle | |
1483 | either because no valid, writeable file handle for | |
1484 | it was found or because there was an error setting | |
1485 | it by handle */ | |
1486 | rc = CIFSSMBSetEOF(xid, pTcon, full_path, | |
1487 | attrs->ia_size, FALSE, | |
fb8c4b14 | 1488 | cifs_sb->local_nls, |
737b758c SF |
1489 | cifs_sb->mnt_cifs_flags & |
1490 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
e30dcf3a | 1491 | cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc)); |
fb8c4b14 | 1492 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
e30dcf3a SF |
1493 | __u16 netfid; |
1494 | int oplock = FALSE; | |
1495 | ||
1496 | rc = SMBLegacyOpen(xid, pTcon, full_path, | |
1497 | FILE_OPEN, | |
1498 | SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, | |
1499 | CREATE_NOT_DIR, &netfid, &oplock, | |
1500 | NULL, cifs_sb->local_nls, | |
1501 | cifs_sb->mnt_cifs_flags & | |
1502 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
fb8c4b14 | 1503 | if (rc == 0) { |
e30dcf3a SF |
1504 | int bytes_written; |
1505 | rc = CIFSSMBWrite(xid, pTcon, | |
1506 | netfid, 0, | |
1507 | attrs->ia_size, | |
1508 | &bytes_written, NULL, | |
1509 | NULL, 1 /* 45 sec */); | |
fb8c4b14 | 1510 | cFYI(1, ("wrt seteof rc %d", rc)); |
e30dcf3a SF |
1511 | CIFSSMBClose(xid, pTcon, netfid); |
1512 | } | |
1513 | ||
1514 | } | |
1da177e4 LT |
1515 | } |
1516 | ||
1517 | /* Server is ok setting allocation size implicitly - no need | |
1518 | to call: | |
1519 | CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE, | |
1520 | cifs_sb->local_nls); | |
1521 | */ | |
1522 | ||
1523 | if (rc == 0) { | |
3677db10 | 1524 | rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size); |
1da177e4 LT |
1525 | cifs_truncate_page(direntry->d_inode->i_mapping, |
1526 | direntry->d_inode->i_size); | |
fb8c4b14 | 1527 | } else |
e30dcf3a | 1528 | goto cifs_setattr_exit; |
1da177e4 LT |
1529 | } |
1530 | if (attrs->ia_valid & ATTR_UID) { | |
e30dcf3a | 1531 | cFYI(1, ("UID changed to %d", attrs->ia_uid)); |
1da177e4 | 1532 | uid = attrs->ia_uid; |
1da177e4 LT |
1533 | } |
1534 | if (attrs->ia_valid & ATTR_GID) { | |
e30dcf3a | 1535 | cFYI(1, ("GID changed to %d", attrs->ia_gid)); |
1da177e4 | 1536 | gid = attrs->ia_gid; |
1da177e4 LT |
1537 | } |
1538 | ||
1539 | time_buf.Attributes = 0; | |
1540 | if (attrs->ia_valid & ATTR_MODE) { | |
e30dcf3a | 1541 | cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode)); |
1da177e4 | 1542 | mode = attrs->ia_mode; |
1da177e4 LT |
1543 | } |
1544 | ||
1545 | if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX) | |
1546 | && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID))) | |
1547 | rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid, | |
737b758c | 1548 | 0 /* dev_t */, cifs_sb->local_nls, |
fb8c4b14 | 1549 | cifs_sb->mnt_cifs_flags & |
737b758c | 1550 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
1da177e4 | 1551 | else if (attrs->ia_valid & ATTR_MODE) { |
cdbce9c8 | 1552 | rc = 0; |
1da177e4 | 1553 | if ((mode & S_IWUGO) == 0) /* not writeable */ { |
066fcb06 SF |
1554 | if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) { |
1555 | set_dosattr = TRUE; | |
1da177e4 LT |
1556 | time_buf.Attributes = |
1557 | cpu_to_le32(cifsInode->cifsAttrs | | |
1558 | ATTR_READONLY); | |
066fcb06 | 1559 | } |
5268df2e SF |
1560 | } else if (cifsInode->cifsAttrs & ATTR_READONLY) { |
1561 | /* If file is readonly on server, we would | |
1562 | not be able to write to it - so if any write | |
1563 | bit is enabled for user or group or other we | |
1564 | need to at least try to remove r/o dos attr */ | |
1565 | set_dosattr = TRUE; | |
1566 | time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs & | |
1567 | (~ATTR_READONLY)); | |
1568 | /* Windows ignores set to zero */ | |
fb8c4b14 | 1569 | if (time_buf.Attributes == 0) |
5268df2e | 1570 | time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL); |
1da177e4 LT |
1571 | } |
1572 | /* BB to be implemented - | |
1573 | via Windows security descriptors or streams */ | |
1574 | /* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid, | |
1575 | cifs_sb->local_nls); */ | |
1576 | } | |
1577 | ||
1578 | if (attrs->ia_valid & ATTR_ATIME) { | |
1579 | set_time = TRUE; | |
1580 | time_buf.LastAccessTime = | |
1581 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); | |
1582 | } else | |
1583 | time_buf.LastAccessTime = 0; | |
1584 | ||
1585 | if (attrs->ia_valid & ATTR_MTIME) { | |
1586 | set_time = TRUE; | |
1587 | time_buf.LastWriteTime = | |
1588 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); | |
1589 | } else | |
1590 | time_buf.LastWriteTime = 0; | |
e30dcf3a SF |
1591 | /* Do not set ctime explicitly unless other time |
1592 | stamps are changed explicitly (i.e. by utime() | |
1593 | since we would then have a mix of client and | |
1594 | server times */ | |
50c2f753 | 1595 | |
e30dcf3a | 1596 | if (set_time && (attrs->ia_valid & ATTR_CTIME)) { |
1da177e4 | 1597 | set_time = TRUE; |
e30dcf3a SF |
1598 | /* Although Samba throws this field away |
1599 | it may be useful to Windows - but we do | |
1600 | not want to set ctime unless some other | |
1601 | timestamp is changing */ | |
26a21b98 | 1602 | cFYI(1, ("CIFS - CTIME changed")); |
1da177e4 LT |
1603 | time_buf.ChangeTime = |
1604 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); | |
1605 | } else | |
1606 | time_buf.ChangeTime = 0; | |
1607 | ||
066fcb06 | 1608 | if (set_time || set_dosattr) { |
1da177e4 LT |
1609 | time_buf.CreationTime = 0; /* do not change */ |
1610 | /* In the future we should experiment - try setting timestamps | |
1611 | via Handle (SetFileInfo) instead of by path */ | |
1612 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) | |
1613 | rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf, | |
737b758c SF |
1614 | cifs_sb->local_nls, |
1615 | cifs_sb->mnt_cifs_flags & | |
1616 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
1617 | else |
1618 | rc = -EOPNOTSUPP; | |
1619 | ||
1620 | if (rc == -EOPNOTSUPP) { | |
1621 | int oplock = FALSE; | |
1622 | __u16 netfid; | |
1623 | ||
1624 | cFYI(1, ("calling SetFileInfo since SetPathInfo for " | |
1625 | "times not supported by this server")); | |
1626 | /* BB we could scan to see if we already have it open | |
1627 | and pass in pid of opener to function */ | |
1628 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, | |
1629 | SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, | |
1630 | CREATE_NOT_DIR, &netfid, &oplock, | |
737b758c SF |
1631 | NULL, cifs_sb->local_nls, |
1632 | cifs_sb->mnt_cifs_flags & | |
1633 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
fb8c4b14 | 1634 | if (rc == 0) { |
1da177e4 LT |
1635 | rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf, |
1636 | netfid); | |
1637 | CIFSSMBClose(xid, pTcon, netfid); | |
1638 | } else { | |
1639 | /* BB For even older servers we could convert time_buf | |
1640 | into old DOS style which uses two second | |
1641 | granularity */ | |
1642 | ||
1643 | /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path, | |
fb8c4b14 | 1644 | &time_buf, cifs_sb->local_nls); */ |
1da177e4 LT |
1645 | } |
1646 | } | |
e30dcf3a SF |
1647 | /* Even if error on time set, no sense failing the call if |
1648 | the server would set the time to a reasonable value anyway, | |
1649 | and this check ensures that we are not being called from | |
1650 | sys_utimes in which case we ought to fail the call back to | |
1651 | the user when the server rejects the call */ | |
fb8c4b14 | 1652 | if ((rc) && (attrs->ia_valid & |
e30dcf3a SF |
1653 | (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) |
1654 | rc = 0; | |
1da177e4 LT |
1655 | } |
1656 | ||
1657 | /* do not need local check to inode_check_ok since the server does | |
1658 | that */ | |
1659 | if (!rc) | |
1660 | rc = inode_setattr(direntry->d_inode, attrs); | |
e30dcf3a | 1661 | cifs_setattr_exit: |
1da177e4 LT |
1662 | kfree(full_path); |
1663 | FreeXid(xid); | |
1664 | return rc; | |
1665 | } | |
1666 | ||
99ee4dbd | 1667 | #if 0 |
1da177e4 LT |
1668 | void cifs_delete_inode(struct inode *inode) |
1669 | { | |
26a21b98 | 1670 | cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode)); |
1da177e4 LT |
1671 | /* may have to add back in if and when safe distributed caching of |
1672 | directories added e.g. via FindNotify */ | |
1673 | } | |
99ee4dbd | 1674 | #endif |