Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/inode.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
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 | 22 | #include <linux/stat.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
1da177e4 LT |
24 | #include <linux/pagemap.h> |
25 | #include <asm/div64.h> | |
26 | #include "cifsfs.h" | |
27 | #include "cifspdu.h" | |
28 | #include "cifsglob.h" | |
29 | #include "cifsproto.h" | |
30 | #include "cifs_debug.h" | |
31 | #include "cifs_fs_sb.h" | |
9451a9a5 | 32 | #include "fscache.h" |
1da177e4 | 33 | |
70eff55d | 34 | |
01c64fea | 35 | static void cifs_set_ops(struct inode *inode) |
70eff55d CH |
36 | { |
37 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
38 | ||
39 | switch (inode->i_mode & S_IFMT) { | |
40 | case S_IFREG: | |
41 | inode->i_op = &cifs_file_inode_ops; | |
42 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { | |
43 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) | |
44 | inode->i_fop = &cifs_file_direct_nobrl_ops; | |
45 | else | |
46 | inode->i_fop = &cifs_file_direct_ops; | |
8be7e6ba PS |
47 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) { |
48 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) | |
49 | inode->i_fop = &cifs_file_strict_nobrl_ops; | |
50 | else | |
51 | inode->i_fop = &cifs_file_strict_ops; | |
70eff55d CH |
52 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
53 | inode->i_fop = &cifs_file_nobrl_ops; | |
54 | else { /* not direct, send byte range locks */ | |
55 | inode->i_fop = &cifs_file_ops; | |
56 | } | |
57 | ||
70eff55d | 58 | /* check if server can support readpages */ |
0d424ad0 | 59 | if (cifs_sb_master_tcon(cifs_sb)->ses->server->maxBuf < |
70eff55d CH |
60 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE) |
61 | inode->i_data.a_ops = &cifs_addr_ops_smallbuf; | |
62 | else | |
63 | inode->i_data.a_ops = &cifs_addr_ops; | |
64 | break; | |
65 | case S_IFDIR: | |
bc5b6e24 | 66 | #ifdef CONFIG_CIFS_DFS_UPCALL |
01c64fea | 67 | if (IS_AUTOMOUNT(inode)) { |
7962670e IM |
68 | inode->i_op = &cifs_dfs_referral_inode_operations; |
69 | } else { | |
bc5b6e24 SF |
70 | #else /* NO DFS support, treat as a directory */ |
71 | { | |
72 | #endif | |
7962670e IM |
73 | inode->i_op = &cifs_dir_inode_ops; |
74 | inode->i_fop = &cifs_dir_ops; | |
75 | } | |
70eff55d CH |
76 | break; |
77 | case S_IFLNK: | |
78 | inode->i_op = &cifs_symlink_inode_ops; | |
79 | break; | |
80 | default: | |
81 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
82 | break; | |
83 | } | |
84 | } | |
85 | ||
df2cf170 JL |
86 | /* check inode attributes against fattr. If they don't match, tag the |
87 | * inode for cache invalidation | |
88 | */ | |
89 | static void | |
90 | cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr) | |
91 | { | |
92 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); | |
93 | ||
f19159dc | 94 | cFYI(1, "%s: revalidating inode %llu", __func__, cifs_i->uniqueid); |
df2cf170 JL |
95 | |
96 | if (inode->i_state & I_NEW) { | |
f19159dc | 97 | cFYI(1, "%s: inode %llu is new", __func__, cifs_i->uniqueid); |
df2cf170 JL |
98 | return; |
99 | } | |
100 | ||
101 | /* don't bother with revalidation if we have an oplock */ | |
102 | if (cifs_i->clientCanCacheRead) { | |
f19159dc SF |
103 | cFYI(1, "%s: inode %llu is oplocked", __func__, |
104 | cifs_i->uniqueid); | |
df2cf170 JL |
105 | return; |
106 | } | |
107 | ||
108 | /* revalidate if mtime or size have changed */ | |
109 | if (timespec_equal(&inode->i_mtime, &fattr->cf_mtime) && | |
110 | cifs_i->server_eof == fattr->cf_eof) { | |
f19159dc SF |
111 | cFYI(1, "%s: inode %llu is unchanged", __func__, |
112 | cifs_i->uniqueid); | |
df2cf170 JL |
113 | return; |
114 | } | |
115 | ||
f19159dc SF |
116 | cFYI(1, "%s: invalidating inode %llu mapping", __func__, |
117 | cifs_i->uniqueid); | |
df2cf170 JL |
118 | cifs_i->invalid_mapping = true; |
119 | } | |
120 | ||
cc0bad75 JL |
121 | /* populate an inode with info from a cifs_fattr struct */ |
122 | void | |
123 | cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) | |
75f12983 | 124 | { |
cc0bad75 | 125 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
0b8f18e3 JL |
126 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
127 | unsigned long oldtime = cifs_i->time; | |
cc0bad75 | 128 | |
df2cf170 JL |
129 | cifs_revalidate_cache(inode, fattr); |
130 | ||
cc0bad75 JL |
131 | inode->i_atime = fattr->cf_atime; |
132 | inode->i_mtime = fattr->cf_mtime; | |
133 | inode->i_ctime = fattr->cf_ctime; | |
cc0bad75 | 134 | inode->i_rdev = fattr->cf_rdev; |
bfe86848 | 135 | set_nlink(inode, fattr->cf_nlink); |
cc0bad75 JL |
136 | inode->i_uid = fattr->cf_uid; |
137 | inode->i_gid = fattr->cf_gid; | |
138 | ||
0b8f18e3 JL |
139 | /* if dynperm is set, don't clobber existing mode */ |
140 | if (inode->i_state & I_NEW || | |
141 | !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) | |
142 | inode->i_mode = fattr->cf_mode; | |
143 | ||
cc0bad75 | 144 | cifs_i->cifsAttrs = fattr->cf_cifsattrs; |
75f12983 | 145 | |
0b8f18e3 JL |
146 | if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL) |
147 | cifs_i->time = 0; | |
148 | else | |
149 | cifs_i->time = jiffies; | |
150 | ||
b6b38f70 JP |
151 | cFYI(1, "inode 0x%p old_time=%ld new_time=%ld", inode, |
152 | oldtime, cifs_i->time); | |
0b8f18e3 JL |
153 | |
154 | cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING; | |
cc0bad75 | 155 | |
835a36ca | 156 | cifs_i->server_eof = fattr->cf_eof; |
cc0bad75 JL |
157 | /* |
158 | * Can't safely change the file size here if the client is writing to | |
159 | * it due to potential races. | |
160 | */ | |
161 | spin_lock(&inode->i_lock); | |
162 | if (is_size_safe_to_change(cifs_i, fattr->cf_eof)) { | |
163 | i_size_write(inode, fattr->cf_eof); | |
164 | ||
165 | /* | |
166 | * i_blocks is not related to (i_size / i_blksize), | |
167 | * but instead 512 byte (2**9) size is required for | |
168 | * calculating num blocks. | |
169 | */ | |
170 | inode->i_blocks = (512 - 1 + fattr->cf_bytes) >> 9; | |
171 | } | |
172 | spin_unlock(&inode->i_lock); | |
173 | ||
01c64fea DH |
174 | if (fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL) |
175 | inode->i_flags |= S_AUTOMOUNT; | |
176 | cifs_set_ops(inode); | |
cc0bad75 JL |
177 | } |
178 | ||
4065c802 JL |
179 | void |
180 | cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr) | |
181 | { | |
182 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
183 | ||
184 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) | |
185 | return; | |
186 | ||
187 | fattr->cf_uniqueid = iunique(sb, ROOT_I); | |
188 | } | |
189 | ||
cc0bad75 JL |
190 | /* Fill a cifs_fattr struct with info from FILE_UNIX_BASIC_INFO. */ |
191 | void | |
192 | cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info, | |
193 | struct cifs_sb_info *cifs_sb) | |
194 | { | |
195 | memset(fattr, 0, sizeof(*fattr)); | |
196 | fattr->cf_uniqueid = le64_to_cpu(info->UniqueId); | |
197 | fattr->cf_bytes = le64_to_cpu(info->NumOfBytes); | |
198 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); | |
199 | ||
200 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); | |
201 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastModificationTime); | |
202 | fattr->cf_ctime = cifs_NTtimeToUnix(info->LastStatusChange); | |
203 | fattr->cf_mode = le64_to_cpu(info->Permissions); | |
75f12983 CH |
204 | |
205 | /* | |
206 | * Since we set the inode type below we need to mask off | |
207 | * to avoid strange results if bits set above. | |
208 | */ | |
cc0bad75 | 209 | fattr->cf_mode &= ~S_IFMT; |
75f12983 CH |
210 | switch (le32_to_cpu(info->Type)) { |
211 | case UNIX_FILE: | |
cc0bad75 JL |
212 | fattr->cf_mode |= S_IFREG; |
213 | fattr->cf_dtype = DT_REG; | |
75f12983 CH |
214 | break; |
215 | case UNIX_SYMLINK: | |
cc0bad75 JL |
216 | fattr->cf_mode |= S_IFLNK; |
217 | fattr->cf_dtype = DT_LNK; | |
75f12983 CH |
218 | break; |
219 | case UNIX_DIR: | |
cc0bad75 JL |
220 | fattr->cf_mode |= S_IFDIR; |
221 | fattr->cf_dtype = DT_DIR; | |
75f12983 CH |
222 | break; |
223 | case UNIX_CHARDEV: | |
cc0bad75 JL |
224 | fattr->cf_mode |= S_IFCHR; |
225 | fattr->cf_dtype = DT_CHR; | |
226 | fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor), | |
227 | le64_to_cpu(info->DevMinor) & MINORMASK); | |
75f12983 CH |
228 | break; |
229 | case UNIX_BLOCKDEV: | |
cc0bad75 JL |
230 | fattr->cf_mode |= S_IFBLK; |
231 | fattr->cf_dtype = DT_BLK; | |
232 | fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor), | |
233 | le64_to_cpu(info->DevMinor) & MINORMASK); | |
75f12983 CH |
234 | break; |
235 | case UNIX_FIFO: | |
cc0bad75 JL |
236 | fattr->cf_mode |= S_IFIFO; |
237 | fattr->cf_dtype = DT_FIFO; | |
75f12983 CH |
238 | break; |
239 | case UNIX_SOCKET: | |
cc0bad75 JL |
240 | fattr->cf_mode |= S_IFSOCK; |
241 | fattr->cf_dtype = DT_SOCK; | |
75f12983 CH |
242 | break; |
243 | default: | |
244 | /* safest to call it a file if we do not know */ | |
cc0bad75 JL |
245 | fattr->cf_mode |= S_IFREG; |
246 | fattr->cf_dtype = DT_REG; | |
b6b38f70 | 247 | cFYI(1, "unknown type %d", le32_to_cpu(info->Type)); |
75f12983 CH |
248 | break; |
249 | } | |
250 | ||
cc0bad75 JL |
251 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
252 | fattr->cf_uid = cifs_sb->mnt_uid; | |
75f12983 | 253 | else |
cc0bad75 | 254 | fattr->cf_uid = le64_to_cpu(info->Uid); |
75f12983 | 255 | |
cc0bad75 JL |
256 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
257 | fattr->cf_gid = cifs_sb->mnt_gid; | |
75f12983 | 258 | else |
cc0bad75 | 259 | fattr->cf_gid = le64_to_cpu(info->Gid); |
75f12983 | 260 | |
cc0bad75 | 261 | fattr->cf_nlink = le64_to_cpu(info->Nlinks); |
75f12983 CH |
262 | } |
263 | ||
b9a3260f | 264 | /* |
cc0bad75 JL |
265 | * Fill a cifs_fattr struct with fake inode info. |
266 | * | |
267 | * Needed to setup cifs_fattr data for the directory which is the | |
268 | * junction to the new submount (ie to setup the fake directory | |
269 | * which represents a DFS referral). | |
b9a3260f | 270 | */ |
f1230c97 | 271 | static void |
cc0bad75 | 272 | cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb) |
0e4bbde9 | 273 | { |
cc0bad75 | 274 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
0e4bbde9 | 275 | |
b6b38f70 | 276 | cFYI(1, "creating fake fattr for DFS referral"); |
cc0bad75 JL |
277 | |
278 | memset(fattr, 0, sizeof(*fattr)); | |
279 | fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU; | |
280 | fattr->cf_uid = cifs_sb->mnt_uid; | |
281 | fattr->cf_gid = cifs_sb->mnt_gid; | |
282 | fattr->cf_atime = CURRENT_TIME; | |
283 | fattr->cf_ctime = CURRENT_TIME; | |
284 | fattr->cf_mtime = CURRENT_TIME; | |
285 | fattr->cf_nlink = 2; | |
286 | fattr->cf_flags |= CIFS_FATTR_DFS_REFERRAL; | |
0e4bbde9 SF |
287 | } |
288 | ||
abab095d JL |
289 | int cifs_get_file_info_unix(struct file *filp) |
290 | { | |
291 | int rc; | |
292 | int xid; | |
293 | FILE_UNIX_BASIC_INFO find_data; | |
294 | struct cifs_fattr fattr; | |
295 | struct inode *inode = filp->f_path.dentry->d_inode; | |
296 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
c21dfb69 | 297 | struct cifsFileInfo *cfile = filp->private_data; |
96daf2b0 | 298 | struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); |
abab095d JL |
299 | |
300 | xid = GetXid(); | |
301 | rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->netfid, &find_data); | |
302 | if (!rc) { | |
303 | cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); | |
304 | } else if (rc == -EREMOTE) { | |
305 | cifs_create_dfs_fattr(&fattr, inode->i_sb); | |
306 | rc = 0; | |
307 | } | |
308 | ||
309 | cifs_fattr_to_inode(inode, &fattr); | |
310 | FreeXid(xid); | |
311 | return rc; | |
312 | } | |
313 | ||
1da177e4 | 314 | int cifs_get_inode_info_unix(struct inode **pinode, |
cc0bad75 JL |
315 | const unsigned char *full_path, |
316 | struct super_block *sb, int xid) | |
1da177e4 | 317 | { |
cc0bad75 | 318 | int rc; |
0e4bbde9 | 319 | FILE_UNIX_BASIC_INFO find_data; |
cc0bad75 | 320 | struct cifs_fattr fattr; |
96daf2b0 | 321 | struct cifs_tcon *tcon; |
7ffec372 | 322 | struct tcon_link *tlink; |
1da177e4 | 323 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
1da177e4 | 324 | |
b6b38f70 | 325 | cFYI(1, "Getting info on %s", full_path); |
7962670e | 326 | |
7ffec372 JL |
327 | tlink = cifs_sb_tlink(cifs_sb); |
328 | if (IS_ERR(tlink)) | |
329 | return PTR_ERR(tlink); | |
330 | tcon = tlink_tcon(tlink); | |
331 | ||
1da177e4 | 332 | /* could have done a find first instead but this returns more info */ |
cc0bad75 | 333 | rc = CIFSSMBUnixQPathInfo(xid, tcon, full_path, &find_data, |
737b758c SF |
334 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
335 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 336 | cifs_put_tlink(tlink); |
e911d0cc | 337 | |
cc0bad75 JL |
338 | if (!rc) { |
339 | cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); | |
340 | } else if (rc == -EREMOTE) { | |
341 | cifs_create_dfs_fattr(&fattr, sb); | |
342 | rc = 0; | |
343 | } else { | |
344 | return rc; | |
345 | } | |
1da177e4 | 346 | |
1b12b9c1 SM |
347 | /* check for Minshall+French symlinks */ |
348 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { | |
349 | int tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid); | |
350 | if (tmprc) | |
351 | cFYI(1, "CIFSCheckMFSymlink: %d", tmprc); | |
352 | } | |
353 | ||
0e4bbde9 | 354 | if (*pinode == NULL) { |
cc0bad75 | 355 | /* get new inode */ |
4065c802 | 356 | cifs_fill_uniqueid(sb, &fattr); |
cc0bad75 JL |
357 | *pinode = cifs_iget(sb, &fattr); |
358 | if (!*pinode) | |
0e4bbde9 | 359 | rc = -ENOMEM; |
cc0bad75 JL |
360 | } else { |
361 | /* we already have inode, update it */ | |
362 | cifs_fattr_to_inode(*pinode, &fattr); | |
0e4bbde9 | 363 | } |
1da177e4 | 364 | |
1da177e4 LT |
365 | return rc; |
366 | } | |
367 | ||
0b8f18e3 JL |
368 | static int |
369 | cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path, | |
370 | struct cifs_sb_info *cifs_sb, int xid) | |
d6e2f2a4 SF |
371 | { |
372 | int rc; | |
4b18f2a9 | 373 | int oplock = 0; |
d6e2f2a4 | 374 | __u16 netfid; |
7ffec372 | 375 | struct tcon_link *tlink; |
96daf2b0 | 376 | struct cifs_tcon *tcon; |
d4ffff1f | 377 | struct cifs_io_parms io_parms; |
86c96b4b | 378 | char buf[24]; |
d6e2f2a4 | 379 | unsigned int bytes_read; |
fb8c4b14 | 380 | char *pbuf; |
d6e2f2a4 SF |
381 | |
382 | pbuf = buf; | |
383 | ||
0b8f18e3 JL |
384 | fattr->cf_mode &= ~S_IFMT; |
385 | ||
386 | if (fattr->cf_eof == 0) { | |
387 | fattr->cf_mode |= S_IFIFO; | |
388 | fattr->cf_dtype = DT_FIFO; | |
d6e2f2a4 | 389 | return 0; |
0b8f18e3 JL |
390 | } else if (fattr->cf_eof < 8) { |
391 | fattr->cf_mode |= S_IFREG; | |
392 | fattr->cf_dtype = DT_REG; | |
d6e2f2a4 SF |
393 | return -EINVAL; /* EOPNOTSUPP? */ |
394 | } | |
50c2f753 | 395 | |
7ffec372 JL |
396 | tlink = cifs_sb_tlink(cifs_sb); |
397 | if (IS_ERR(tlink)) | |
398 | return PTR_ERR(tlink); | |
399 | tcon = tlink_tcon(tlink); | |
400 | ||
401 | rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, GENERIC_READ, | |
d6e2f2a4 SF |
402 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
403 | cifs_sb->local_nls, | |
404 | cifs_sb->mnt_cifs_flags & | |
405 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
fb8c4b14 | 406 | if (rc == 0) { |
ec637e3f | 407 | int buf_type = CIFS_NO_BUFFER; |
d6e2f2a4 | 408 | /* Read header */ |
d4ffff1f PS |
409 | io_parms.netfid = netfid; |
410 | io_parms.pid = current->tgid; | |
411 | io_parms.tcon = tcon; | |
412 | io_parms.offset = 0; | |
413 | io_parms.length = 24; | |
414 | rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, | |
415 | &buf_type); | |
4523cc30 SF |
416 | if ((rc == 0) && (bytes_read >= 8)) { |
417 | if (memcmp("IntxBLK", pbuf, 8) == 0) { | |
b6b38f70 | 418 | cFYI(1, "Block device"); |
0b8f18e3 JL |
419 | fattr->cf_mode |= S_IFBLK; |
420 | fattr->cf_dtype = DT_BLK; | |
4523cc30 | 421 | if (bytes_read == 24) { |
86c96b4b SF |
422 | /* we have enough to decode dev num */ |
423 | __u64 mjr; /* major */ | |
424 | __u64 mnr; /* minor */ | |
425 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); | |
426 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); | |
0b8f18e3 | 427 | fattr->cf_rdev = MKDEV(mjr, mnr); |
86c96b4b | 428 | } |
4523cc30 | 429 | } else if (memcmp("IntxCHR", pbuf, 8) == 0) { |
b6b38f70 | 430 | cFYI(1, "Char device"); |
0b8f18e3 JL |
431 | fattr->cf_mode |= S_IFCHR; |
432 | fattr->cf_dtype = DT_CHR; | |
4523cc30 | 433 | if (bytes_read == 24) { |
86c96b4b SF |
434 | /* we have enough to decode dev num */ |
435 | __u64 mjr; /* major */ | |
436 | __u64 mnr; /* minor */ | |
437 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); | |
438 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); | |
0b8f18e3 | 439 | fattr->cf_rdev = MKDEV(mjr, mnr); |
fb8c4b14 | 440 | } |
4523cc30 | 441 | } else if (memcmp("IntxLNK", pbuf, 7) == 0) { |
b6b38f70 | 442 | cFYI(1, "Symlink"); |
0b8f18e3 JL |
443 | fattr->cf_mode |= S_IFLNK; |
444 | fattr->cf_dtype = DT_LNK; | |
86c96b4b | 445 | } else { |
0b8f18e3 JL |
446 | fattr->cf_mode |= S_IFREG; /* file? */ |
447 | fattr->cf_dtype = DT_REG; | |
fb8c4b14 | 448 | rc = -EOPNOTSUPP; |
86c96b4b | 449 | } |
3020a1f5 | 450 | } else { |
0b8f18e3 JL |
451 | fattr->cf_mode |= S_IFREG; /* then it is a file */ |
452 | fattr->cf_dtype = DT_REG; | |
fb8c4b14 SF |
453 | rc = -EOPNOTSUPP; /* or some unknown SFU type */ |
454 | } | |
7ffec372 | 455 | CIFSSMBClose(xid, tcon, netfid); |
d6e2f2a4 | 456 | } |
7ffec372 | 457 | cifs_put_tlink(tlink); |
d6e2f2a4 | 458 | return rc; |
d6e2f2a4 SF |
459 | } |
460 | ||
9e294f1c SF |
461 | #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */ |
462 | ||
0b8f18e3 JL |
463 | /* |
464 | * Fetch mode bits as provided by SFU. | |
465 | * | |
466 | * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ? | |
467 | */ | |
468 | static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path, | |
469 | struct cifs_sb_info *cifs_sb, int xid) | |
9e294f1c | 470 | { |
3020a1f5 | 471 | #ifdef CONFIG_CIFS_XATTR |
9e294f1c SF |
472 | ssize_t rc; |
473 | char ea_value[4]; | |
474 | __u32 mode; | |
7ffec372 | 475 | struct tcon_link *tlink; |
96daf2b0 | 476 | struct cifs_tcon *tcon; |
7ffec372 JL |
477 | |
478 | tlink = cifs_sb_tlink(cifs_sb); | |
479 | if (IS_ERR(tlink)) | |
480 | return PTR_ERR(tlink); | |
481 | tcon = tlink_tcon(tlink); | |
9e294f1c | 482 | |
7ffec372 | 483 | rc = CIFSSMBQAllEAs(xid, tcon, path, "SETFILEBITS", |
0b8f18e3 JL |
484 | ea_value, 4 /* size of buf */, cifs_sb->local_nls, |
485 | cifs_sb->mnt_cifs_flags & | |
486 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 487 | cifs_put_tlink(tlink); |
4523cc30 | 488 | if (rc < 0) |
9e294f1c SF |
489 | return (int)rc; |
490 | else if (rc > 3) { | |
491 | mode = le32_to_cpu(*((__le32 *)ea_value)); | |
0b8f18e3 | 492 | fattr->cf_mode &= ~SFBITS_MASK; |
b6b38f70 JP |
493 | cFYI(1, "special bits 0%o org mode 0%o", mode, |
494 | fattr->cf_mode); | |
0b8f18e3 | 495 | fattr->cf_mode = (mode & SFBITS_MASK) | fattr->cf_mode; |
b6b38f70 | 496 | cFYI(1, "special mode bits 0%o", mode); |
9e294f1c | 497 | } |
0b8f18e3 JL |
498 | |
499 | return 0; | |
3020a1f5 SF |
500 | #else |
501 | return -EOPNOTSUPP; | |
502 | #endif | |
9e294f1c SF |
503 | } |
504 | ||
0b8f18e3 | 505 | /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */ |
f1230c97 | 506 | static void |
0b8f18e3 JL |
507 | cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, |
508 | struct cifs_sb_info *cifs_sb, bool adjust_tz) | |
b9a3260f | 509 | { |
96daf2b0 | 510 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
0d424ad0 | 511 | |
0b8f18e3 JL |
512 | memset(fattr, 0, sizeof(*fattr)); |
513 | fattr->cf_cifsattrs = le32_to_cpu(info->Attributes); | |
514 | if (info->DeletePending) | |
515 | fattr->cf_flags |= CIFS_FATTR_DELETE_PENDING; | |
516 | ||
517 | if (info->LastAccessTime) | |
518 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); | |
519 | else | |
520 | fattr->cf_atime = CURRENT_TIME; | |
521 | ||
522 | fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime); | |
523 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime); | |
524 | ||
525 | if (adjust_tz) { | |
0d424ad0 JL |
526 | fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj; |
527 | fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj; | |
0b8f18e3 JL |
528 | } |
529 | ||
530 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); | |
531 | fattr->cf_bytes = le64_to_cpu(info->AllocationSize); | |
20054bd6 | 532 | fattr->cf_createtime = le64_to_cpu(info->CreationTime); |
0b8f18e3 JL |
533 | |
534 | if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { | |
535 | fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode; | |
536 | fattr->cf_dtype = DT_DIR; | |
6de2ce42 PS |
537 | /* |
538 | * Server can return wrong NumberOfLinks value for directories | |
539 | * when Unix extensions are disabled - fake it. | |
540 | */ | |
541 | fattr->cf_nlink = 2; | |
0b8f18e3 JL |
542 | } else { |
543 | fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode; | |
544 | fattr->cf_dtype = DT_REG; | |
0b8f18e3 | 545 | |
d0c280d2 JL |
546 | /* clear write bits if ATTR_READONLY is set */ |
547 | if (fattr->cf_cifsattrs & ATTR_READONLY) | |
548 | fattr->cf_mode &= ~(S_IWUGO); | |
0b8f18e3 | 549 | |
6de2ce42 PS |
550 | fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); |
551 | } | |
0b8f18e3 JL |
552 | |
553 | fattr->cf_uid = cifs_sb->mnt_uid; | |
554 | fattr->cf_gid = cifs_sb->mnt_gid; | |
b9a3260f SF |
555 | } |
556 | ||
abab095d JL |
557 | int cifs_get_file_info(struct file *filp) |
558 | { | |
559 | int rc; | |
560 | int xid; | |
561 | FILE_ALL_INFO find_data; | |
562 | struct cifs_fattr fattr; | |
563 | struct inode *inode = filp->f_path.dentry->d_inode; | |
564 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
c21dfb69 | 565 | struct cifsFileInfo *cfile = filp->private_data; |
96daf2b0 | 566 | struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); |
abab095d JL |
567 | |
568 | xid = GetXid(); | |
569 | rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data); | |
42274bb2 PS |
570 | switch (rc) { |
571 | case 0: | |
572 | cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false); | |
573 | break; | |
574 | case -EREMOTE: | |
575 | cifs_create_dfs_fattr(&fattr, inode->i_sb); | |
576 | rc = 0; | |
577 | break; | |
578 | case -EOPNOTSUPP: | |
579 | case -EINVAL: | |
abab095d JL |
580 | /* |
581 | * FIXME: legacy server -- fall back to path-based call? | |
ff215713 SF |
582 | * for now, just skip revalidating and mark inode for |
583 | * immediate reval. | |
584 | */ | |
abab095d JL |
585 | rc = 0; |
586 | CIFS_I(inode)->time = 0; | |
42274bb2 | 587 | default: |
abab095d | 588 | goto cgfi_exit; |
42274bb2 | 589 | } |
abab095d JL |
590 | |
591 | /* | |
592 | * don't bother with SFU junk here -- just mark inode as needing | |
593 | * revalidation. | |
594 | */ | |
abab095d JL |
595 | fattr.cf_uniqueid = CIFS_I(inode)->uniqueid; |
596 | fattr.cf_flags |= CIFS_FATTR_NEED_REVAL; | |
597 | cifs_fattr_to_inode(inode, &fattr); | |
598 | cgfi_exit: | |
599 | FreeXid(xid); | |
600 | return rc; | |
601 | } | |
602 | ||
1da177e4 | 603 | int cifs_get_inode_info(struct inode **pinode, |
646dd539 | 604 | const unsigned char *full_path, FILE_ALL_INFO *pfindData, |
8b1327f6 | 605 | struct super_block *sb, int xid, const __u16 *pfid) |
1da177e4 | 606 | { |
0b8f18e3 | 607 | int rc = 0, tmprc; |
96daf2b0 | 608 | struct cifs_tcon *pTcon; |
7ffec372 | 609 | struct tcon_link *tlink; |
1da177e4 | 610 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
1da177e4 | 611 | char *buf = NULL; |
5ade9dea | 612 | bool adjustTZ = false; |
0b8f18e3 | 613 | struct cifs_fattr fattr; |
1da177e4 | 614 | |
7ffec372 JL |
615 | tlink = cifs_sb_tlink(cifs_sb); |
616 | if (IS_ERR(tlink)) | |
617 | return PTR_ERR(tlink); | |
618 | pTcon = tlink_tcon(tlink); | |
619 | ||
b6b38f70 | 620 | cFYI(1, "Getting info on %s", full_path); |
1da177e4 | 621 | |
d0d2f2df SF |
622 | if ((pfindData == NULL) && (*pinode != NULL)) { |
623 | if (CIFS_I(*pinode)->clientCanCacheRead) { | |
b6b38f70 | 624 | cFYI(1, "No need to revalidate cached inode sizes"); |
7ffec372 | 625 | goto cgii_exit; |
1da177e4 LT |
626 | } |
627 | } | |
628 | ||
629 | /* if file info not passed in then get it from server */ | |
d0d2f2df | 630 | if (pfindData == NULL) { |
1da177e4 | 631 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
7ffec372 JL |
632 | if (buf == NULL) { |
633 | rc = -ENOMEM; | |
634 | goto cgii_exit; | |
635 | } | |
1da177e4 | 636 | pfindData = (FILE_ALL_INFO *)buf; |
7962670e | 637 | |
1da177e4 | 638 | /* could do find first instead but this returns more info */ |
7962670e | 639 | rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData, |
acf1a1b1 | 640 | 0 /* not legacy */, |
6b8edfe0 | 641 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
737b758c | 642 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
6b8edfe0 SF |
643 | /* BB optimize code so we do not make the above call |
644 | when server claims no NT SMB support and the above call | |
645 | failed at least once - set flag in tcon or mount */ | |
4523cc30 | 646 | if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { |
7962670e | 647 | rc = SMBQueryInformation(xid, pTcon, full_path, |
fb8c4b14 | 648 | pfindData, cifs_sb->local_nls, |
6b8edfe0 SF |
649 | cifs_sb->mnt_cifs_flags & |
650 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
4b18f2a9 | 651 | adjustTZ = true; |
6b8edfe0 | 652 | } |
1da177e4 | 653 | } |
0b8f18e3 JL |
654 | |
655 | if (!rc) { | |
656 | cifs_all_info_to_fattr(&fattr, (FILE_ALL_INFO *) pfindData, | |
657 | cifs_sb, adjustTZ); | |
658 | } else if (rc == -EREMOTE) { | |
659 | cifs_create_dfs_fattr(&fattr, sb); | |
b9a3260f | 660 | rc = 0; |
0b8f18e3 | 661 | } else { |
7962670e | 662 | goto cgii_exit; |
0b8f18e3 | 663 | } |
1da177e4 | 664 | |
0b8f18e3 JL |
665 | /* |
666 | * If an inode wasn't passed in, then get the inode number | |
667 | * | |
668 | * Is an i_ino of zero legal? Can we use that to check if the server | |
669 | * supports returning inode numbers? Are there other sanity checks we | |
670 | * can use to ensure that the server is really filling in that field? | |
671 | * | |
672 | * We can not use the IndexNumber field by default from Windows or | |
673 | * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA | |
674 | * CIFS spec claims that this value is unique within the scope of a | |
675 | * share, and the windows docs hint that it's actually unique | |
676 | * per-machine. | |
677 | * | |
678 | * There may be higher info levels that work but are there Windows | |
679 | * server or network appliances for which IndexNumber field is not | |
680 | * guaranteed unique? | |
681 | */ | |
b9a3260f | 682 | if (*pinode == NULL) { |
b9a3260f SF |
683 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
684 | int rc1 = 0; | |
b9a3260f SF |
685 | |
686 | rc1 = CIFSGetSrvInodeNumber(xid, pTcon, | |
0b8f18e3 | 687 | full_path, &fattr.cf_uniqueid, |
737b758c SF |
688 | cifs_sb->local_nls, |
689 | cifs_sb->mnt_cifs_flags & | |
690 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
ec06aedd | 691 | if (rc1 || !fattr.cf_uniqueid) { |
b6b38f70 | 692 | cFYI(1, "GetSrvInodeNum rc %d", rc1); |
0b8f18e3 | 693 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
ec06aedd | 694 | cifs_autodisable_serverino(cifs_sb); |
132ac7b7 | 695 | } |
132ac7b7 | 696 | } else { |
0b8f18e3 | 697 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
132ac7b7 | 698 | } |
b9a3260f | 699 | } else { |
0b8f18e3 | 700 | fattr.cf_uniqueid = CIFS_I(*pinode)->uniqueid; |
b9a3260f SF |
701 | } |
702 | ||
0b8f18e3 JL |
703 | /* query for SFU type info if supported and needed */ |
704 | if (fattr.cf_cifsattrs & ATTR_SYSTEM && | |
705 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { | |
706 | tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid); | |
707 | if (tmprc) | |
b6b38f70 | 708 | cFYI(1, "cifs_sfu_type failed: %d", tmprc); |
b9a3260f | 709 | } |
1da177e4 | 710 | |
79df1bae | 711 | #ifdef CONFIG_CIFS_ACL |
b9a3260f SF |
712 | /* fill in 0777 bits from ACL */ |
713 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { | |
78415d2d SP |
714 | rc = cifs_acl_to_fattr(cifs_sb, &fattr, *pinode, full_path, |
715 | pfid); | |
716 | if (rc) { | |
717 | cFYI(1, "%s: Getting ACL failed with error: %d", | |
718 | __func__, rc); | |
719 | goto cgii_exit; | |
720 | } | |
b9a3260f | 721 | } |
79df1bae | 722 | #endif /* CONFIG_CIFS_ACL */ |
b9a3260f | 723 | |
0b8f18e3 JL |
724 | /* fill in remaining high mode bits e.g. SUID, VTX */ |
725 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) | |
726 | cifs_sfu_mode(&fattr, full_path, cifs_sb, xid); | |
b9a3260f | 727 | |
1b12b9c1 SM |
728 | /* check for Minshall+French symlinks */ |
729 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { | |
730 | tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid); | |
731 | if (tmprc) | |
732 | cFYI(1, "CIFSCheckMFSymlink: %d", tmprc); | |
733 | } | |
734 | ||
0b8f18e3 JL |
735 | if (!*pinode) { |
736 | *pinode = cifs_iget(sb, &fattr); | |
737 | if (!*pinode) | |
738 | rc = -ENOMEM; | |
739 | } else { | |
740 | cifs_fattr_to_inode(*pinode, &fattr); | |
741 | } | |
b9a3260f | 742 | |
7962670e | 743 | cgii_exit: |
1da177e4 | 744 | kfree(buf); |
7ffec372 | 745 | cifs_put_tlink(tlink); |
1da177e4 LT |
746 | return rc; |
747 | } | |
748 | ||
7f8ed420 SF |
749 | static const struct inode_operations cifs_ipc_inode_ops = { |
750 | .lookup = cifs_lookup, | |
751 | }; | |
752 | ||
f87d39d9 | 753 | char *cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb, |
96daf2b0 | 754 | struct cifs_tcon *tcon) |
8be0ed44 | 755 | { |
f87d39d9 | 756 | int pplen = vol->prepath ? strlen(vol->prepath) : 0; |
8be0ed44 SF |
757 | int dfsplen; |
758 | char *full_path = NULL; | |
759 | ||
760 | /* if no prefix path, simply set path to the root of share to "" */ | |
761 | if (pplen == 0) { | |
762 | full_path = kmalloc(1, GFP_KERNEL); | |
763 | if (full_path) | |
764 | full_path[0] = 0; | |
765 | return full_path; | |
766 | } | |
767 | ||
0d424ad0 JL |
768 | if (tcon->Flags & SMB_SHARE_IS_IN_DFS) |
769 | dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1); | |
8be0ed44 SF |
770 | else |
771 | dfsplen = 0; | |
772 | ||
773 | full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL); | |
774 | if (full_path == NULL) | |
775 | return full_path; | |
776 | ||
f9e8c450 | 777 | if (dfsplen) |
0d424ad0 | 778 | strncpy(full_path, tcon->treeName, dfsplen); |
f87d39d9 | 779 | strncpy(full_path + dfsplen, vol->prepath, pplen); |
f9e8c450 | 780 | convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb)); |
8be0ed44 SF |
781 | full_path[dfsplen + pplen] = 0; /* add trailing null */ |
782 | return full_path; | |
783 | } | |
784 | ||
cc0bad75 JL |
785 | static int |
786 | cifs_find_inode(struct inode *inode, void *opaque) | |
787 | { | |
788 | struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; | |
789 | ||
f30b9c11 | 790 | /* don't match inode with different uniqueid */ |
cc0bad75 JL |
791 | if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid) |
792 | return 0; | |
793 | ||
20054bd6 JL |
794 | /* use createtime like an i_generation field */ |
795 | if (CIFS_I(inode)->createtime != fattr->cf_createtime) | |
796 | return 0; | |
797 | ||
f30b9c11 JL |
798 | /* don't match inode of different type */ |
799 | if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT)) | |
800 | return 0; | |
801 | ||
5acfec25 | 802 | /* if it's not a directory or has no dentries, then flag it */ |
b3d9b7a3 | 803 | if (S_ISDIR(inode->i_mode) && !hlist_empty(&inode->i_dentry)) |
3d694380 | 804 | fattr->cf_flags |= CIFS_FATTR_INO_COLLISION; |
3d694380 | 805 | |
cc0bad75 JL |
806 | return 1; |
807 | } | |
808 | ||
809 | static int | |
810 | cifs_init_inode(struct inode *inode, void *opaque) | |
811 | { | |
812 | struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; | |
813 | ||
814 | CIFS_I(inode)->uniqueid = fattr->cf_uniqueid; | |
20054bd6 | 815 | CIFS_I(inode)->createtime = fattr->cf_createtime; |
cc0bad75 JL |
816 | return 0; |
817 | } | |
818 | ||
5acfec25 JL |
819 | /* |
820 | * walk dentry list for an inode and report whether it has aliases that | |
821 | * are hashed. We use this to determine if a directory inode can actually | |
822 | * be used. | |
823 | */ | |
824 | static bool | |
825 | inode_has_hashed_dentries(struct inode *inode) | |
826 | { | |
827 | struct dentry *dentry; | |
b3d9b7a3 | 828 | struct hlist_node *p; |
5acfec25 | 829 | |
873feea0 | 830 | spin_lock(&inode->i_lock); |
b3d9b7a3 | 831 | hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) { |
5acfec25 | 832 | if (!d_unhashed(dentry) || IS_ROOT(dentry)) { |
873feea0 | 833 | spin_unlock(&inode->i_lock); |
5acfec25 JL |
834 | return true; |
835 | } | |
836 | } | |
873feea0 | 837 | spin_unlock(&inode->i_lock); |
5acfec25 JL |
838 | return false; |
839 | } | |
840 | ||
cc0bad75 JL |
841 | /* Given fattrs, get a corresponding inode */ |
842 | struct inode * | |
843 | cifs_iget(struct super_block *sb, struct cifs_fattr *fattr) | |
844 | { | |
845 | unsigned long hash; | |
846 | struct inode *inode; | |
847 | ||
3d694380 | 848 | retry_iget5_locked: |
b6b38f70 | 849 | cFYI(1, "looking for uniqueid=%llu", fattr->cf_uniqueid); |
cc0bad75 JL |
850 | |
851 | /* hash down to 32-bits on 32-bit arch */ | |
852 | hash = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid); | |
853 | ||
854 | inode = iget5_locked(sb, hash, cifs_find_inode, cifs_init_inode, fattr); | |
cc0bad75 | 855 | if (inode) { |
5acfec25 | 856 | /* was there a potentially problematic inode collision? */ |
3d694380 | 857 | if (fattr->cf_flags & CIFS_FATTR_INO_COLLISION) { |
3d694380 | 858 | fattr->cf_flags &= ~CIFS_FATTR_INO_COLLISION; |
5acfec25 JL |
859 | |
860 | if (inode_has_hashed_dentries(inode)) { | |
861 | cifs_autodisable_serverino(CIFS_SB(sb)); | |
862 | iput(inode); | |
863 | fattr->cf_uniqueid = iunique(sb, ROOT_I); | |
864 | goto retry_iget5_locked; | |
865 | } | |
3d694380 JL |
866 | } |
867 | ||
cc0bad75 JL |
868 | cifs_fattr_to_inode(inode, fattr); |
869 | if (sb->s_flags & MS_NOATIME) | |
870 | inode->i_flags |= S_NOATIME | S_NOCMTIME; | |
871 | if (inode->i_state & I_NEW) { | |
872 | inode->i_ino = hash; | |
522440ed JL |
873 | if (S_ISREG(inode->i_mode)) |
874 | inode->i_data.backing_dev_info = sb->s_bdi; | |
0ccd4802 | 875 | #ifdef CONFIG_CIFS_FSCACHE |
9451a9a5 SJ |
876 | /* initialize per-inode cache cookie pointer */ |
877 | CIFS_I(inode)->fscache = NULL; | |
0ccd4802 | 878 | #endif |
cc0bad75 JL |
879 | unlock_new_inode(inode); |
880 | } | |
881 | } | |
882 | ||
883 | return inode; | |
884 | } | |
885 | ||
1da177e4 | 886 | /* gets root inode */ |
9b6763e0 | 887 | struct inode *cifs_root_iget(struct super_block *sb) |
1da177e4 | 888 | { |
ce634ab2 | 889 | int xid; |
0d424ad0 | 890 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
cc0bad75 | 891 | struct inode *inode = NULL; |
ce634ab2 | 892 | long rc; |
96daf2b0 | 893 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
ce634ab2 | 894 | |
8be0ed44 | 895 | xid = GetXid(); |
0d424ad0 | 896 | if (tcon->unix_ext) |
f87d39d9 | 897 | rc = cifs_get_inode_info_unix(&inode, "", sb, xid); |
0b8f18e3 | 898 | else |
f87d39d9 | 899 | rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL); |
0b8f18e3 | 900 | |
a7851ce7 OS |
901 | if (!inode) { |
902 | inode = ERR_PTR(rc); | |
903 | goto out; | |
904 | } | |
cc0bad75 | 905 | |
0ccd4802 | 906 | #ifdef CONFIG_CIFS_FSCACHE |
d03382ce | 907 | /* populate tcon->resource_id */ |
0d424ad0 | 908 | tcon->resource_id = CIFS_I(inode)->uniqueid; |
0ccd4802 | 909 | #endif |
d03382ce | 910 | |
0d424ad0 | 911 | if (rc && tcon->ipc) { |
b6b38f70 | 912 | cFYI(1, "ipc connection - fake read inode"); |
7f8ed420 | 913 | inode->i_mode |= S_IFDIR; |
bfe86848 | 914 | set_nlink(inode, 2); |
7f8ed420 SF |
915 | inode->i_op = &cifs_ipc_inode_ops; |
916 | inode->i_fop = &simple_dir_operations; | |
917 | inode->i_uid = cifs_sb->mnt_uid; | |
918 | inode->i_gid = cifs_sb->mnt_gid; | |
ad661334 | 919 | } else if (rc) { |
ce634ab2 | 920 | iget_failed(inode); |
a7851ce7 | 921 | inode = ERR_PTR(rc); |
7f8ed420 SF |
922 | } |
923 | ||
a7851ce7 | 924 | out: |
ce634ab2 DH |
925 | /* can not call macro FreeXid here since in a void func |
926 | * TODO: This is no longer true | |
927 | */ | |
1da177e4 | 928 | _FreeXid(xid); |
ce634ab2 | 929 | return inode; |
1da177e4 LT |
930 | } |
931 | ||
388e57b2 SF |
932 | static int |
933 | cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid, | |
934 | char *full_path, __u32 dosattr) | |
935 | { | |
936 | int rc; | |
937 | int oplock = 0; | |
938 | __u16 netfid; | |
939 | __u32 netpid; | |
940 | bool set_time = false; | |
941 | struct cifsFileInfo *open_file; | |
942 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); | |
943 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
7ffec372 | 944 | struct tcon_link *tlink = NULL; |
96daf2b0 | 945 | struct cifs_tcon *pTcon; |
388e57b2 SF |
946 | FILE_BASIC_INFO info_buf; |
947 | ||
1adcb710 SF |
948 | if (attrs == NULL) |
949 | return -EINVAL; | |
950 | ||
388e57b2 SF |
951 | if (attrs->ia_valid & ATTR_ATIME) { |
952 | set_time = true; | |
953 | info_buf.LastAccessTime = | |
954 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); | |
955 | } else | |
956 | info_buf.LastAccessTime = 0; | |
957 | ||
958 | if (attrs->ia_valid & ATTR_MTIME) { | |
959 | set_time = true; | |
960 | info_buf.LastWriteTime = | |
961 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); | |
962 | } else | |
963 | info_buf.LastWriteTime = 0; | |
964 | ||
965 | /* | |
966 | * Samba throws this field away, but windows may actually use it. | |
967 | * Do not set ctime unless other time stamps are changed explicitly | |
968 | * (i.e. by utimes()) since we would then have a mix of client and | |
969 | * server times. | |
970 | */ | |
971 | if (set_time && (attrs->ia_valid & ATTR_CTIME)) { | |
b6b38f70 | 972 | cFYI(1, "CIFS - CTIME changed"); |
388e57b2 SF |
973 | info_buf.ChangeTime = |
974 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); | |
975 | } else | |
976 | info_buf.ChangeTime = 0; | |
977 | ||
978 | info_buf.CreationTime = 0; /* don't change */ | |
979 | info_buf.Attributes = cpu_to_le32(dosattr); | |
980 | ||
981 | /* | |
982 | * If the file is already open for write, just use that fileid | |
983 | */ | |
6508d904 | 984 | open_file = find_writable_file(cifsInode, true); |
388e57b2 SF |
985 | if (open_file) { |
986 | netfid = open_file->netfid; | |
987 | netpid = open_file->pid; | |
13cfb733 | 988 | pTcon = tlink_tcon(open_file->tlink); |
388e57b2 SF |
989 | goto set_via_filehandle; |
990 | } | |
991 | ||
7ffec372 JL |
992 | tlink = cifs_sb_tlink(cifs_sb); |
993 | if (IS_ERR(tlink)) { | |
994 | rc = PTR_ERR(tlink); | |
995 | tlink = NULL; | |
996 | goto out; | |
997 | } | |
998 | pTcon = tlink_tcon(tlink); | |
ba00ba64 | 999 | |
388e57b2 SF |
1000 | /* |
1001 | * NT4 apparently returns success on this call, but it doesn't | |
1002 | * really work. | |
1003 | */ | |
1004 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) { | |
1005 | rc = CIFSSMBSetPathInfo(xid, pTcon, full_path, | |
1006 | &info_buf, cifs_sb->local_nls, | |
1007 | cifs_sb->mnt_cifs_flags & | |
1008 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
6b37faa1 JL |
1009 | if (rc == 0) { |
1010 | cifsInode->cifsAttrs = dosattr; | |
1011 | goto out; | |
1012 | } else if (rc != -EOPNOTSUPP && rc != -EINVAL) | |
388e57b2 SF |
1013 | goto out; |
1014 | } | |
1015 | ||
b6b38f70 JP |
1016 | cFYI(1, "calling SetFileInfo since SetPathInfo for " |
1017 | "times not supported by this server"); | |
388e57b2 SF |
1018 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, |
1019 | SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, | |
1020 | CREATE_NOT_DIR, &netfid, &oplock, | |
1021 | NULL, cifs_sb->local_nls, | |
1022 | cifs_sb->mnt_cifs_flags & | |
1023 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1024 | ||
1025 | if (rc != 0) { | |
1026 | if (rc == -EIO) | |
1027 | rc = -EINVAL; | |
1028 | goto out; | |
1029 | } | |
1030 | ||
1031 | netpid = current->tgid; | |
1032 | ||
1033 | set_via_filehandle: | |
1034 | rc = CIFSSMBSetFileInfo(xid, pTcon, &info_buf, netfid, netpid); | |
d388908e SF |
1035 | if (!rc) |
1036 | cifsInode->cifsAttrs = dosattr; | |
1037 | ||
388e57b2 SF |
1038 | if (open_file == NULL) |
1039 | CIFSSMBClose(xid, pTcon, netfid); | |
1040 | else | |
6ab409b5 | 1041 | cifsFileInfo_put(open_file); |
388e57b2 | 1042 | out: |
7ffec372 JL |
1043 | if (tlink != NULL) |
1044 | cifs_put_tlink(tlink); | |
388e57b2 SF |
1045 | return rc; |
1046 | } | |
1047 | ||
a12a1ac7 JL |
1048 | /* |
1049 | * open the given file (if it isn't already), set the DELETE_ON_CLOSE bit | |
1050 | * and rename it to a random name that hopefully won't conflict with | |
1051 | * anything else. | |
1052 | */ | |
1053 | static int | |
3270958b | 1054 | cifs_rename_pending_delete(char *full_path, struct dentry *dentry, int xid) |
a12a1ac7 JL |
1055 | { |
1056 | int oplock = 0; | |
1057 | int rc; | |
1058 | __u16 netfid; | |
3270958b | 1059 | struct inode *inode = dentry->d_inode; |
a12a1ac7 JL |
1060 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
1061 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
7ffec372 | 1062 | struct tcon_link *tlink; |
96daf2b0 | 1063 | struct cifs_tcon *tcon; |
3270958b SF |
1064 | __u32 dosattr, origattr; |
1065 | FILE_BASIC_INFO *info_buf = NULL; | |
a12a1ac7 | 1066 | |
7ffec372 JL |
1067 | tlink = cifs_sb_tlink(cifs_sb); |
1068 | if (IS_ERR(tlink)) | |
1069 | return PTR_ERR(tlink); | |
1070 | tcon = tlink_tcon(tlink); | |
1071 | ||
a12a1ac7 | 1072 | rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, |
dd1db2de | 1073 | DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR, |
a12a1ac7 JL |
1074 | &netfid, &oplock, NULL, cifs_sb->local_nls, |
1075 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1076 | if (rc != 0) | |
1077 | goto out; | |
1078 | ||
3270958b SF |
1079 | origattr = cifsInode->cifsAttrs; |
1080 | if (origattr == 0) | |
1081 | origattr |= ATTR_NORMAL; | |
1082 | ||
1083 | dosattr = origattr & ~ATTR_READONLY; | |
a12a1ac7 JL |
1084 | if (dosattr == 0) |
1085 | dosattr |= ATTR_NORMAL; | |
1086 | dosattr |= ATTR_HIDDEN; | |
1087 | ||
3270958b SF |
1088 | /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */ |
1089 | if (dosattr != origattr) { | |
1090 | info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL); | |
1091 | if (info_buf == NULL) { | |
1092 | rc = -ENOMEM; | |
1093 | goto out_close; | |
1094 | } | |
1095 | info_buf->Attributes = cpu_to_le32(dosattr); | |
1096 | rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, | |
1097 | current->tgid); | |
1098 | /* although we would like to mark the file hidden | |
1099 | if that fails we will still try to rename it */ | |
41346098 | 1100 | if (rc != 0) |
3270958b SF |
1101 | cifsInode->cifsAttrs = dosattr; |
1102 | else | |
1103 | dosattr = origattr; /* since not able to change them */ | |
a12a1ac7 | 1104 | } |
a12a1ac7 | 1105 | |
dd1db2de JL |
1106 | /* rename the file */ |
1107 | rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls, | |
a12a1ac7 JL |
1108 | cifs_sb->mnt_cifs_flags & |
1109 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
3270958b SF |
1110 | if (rc != 0) { |
1111 | rc = -ETXTBSY; | |
1112 | goto undo_setattr; | |
1113 | } | |
6d22f098 | 1114 | |
3270958b SF |
1115 | /* try to set DELETE_ON_CLOSE */ |
1116 | if (!cifsInode->delete_pending) { | |
1117 | rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid, | |
1118 | current->tgid); | |
1119 | /* | |
1120 | * some samba versions return -ENOENT when we try to set the | |
1121 | * file disposition here. Likely a samba bug, but work around | |
1122 | * it for now. This means that some cifsXXX files may hang | |
1123 | * around after they shouldn't. | |
1124 | * | |
1125 | * BB: remove this hack after more servers have the fix | |
1126 | */ | |
1127 | if (rc == -ENOENT) | |
1128 | rc = 0; | |
1129 | else if (rc != 0) { | |
1130 | rc = -ETXTBSY; | |
1131 | goto undo_rename; | |
1132 | } | |
1133 | cifsInode->delete_pending = true; | |
1134 | } | |
7ce86d5a | 1135 | |
a12a1ac7 JL |
1136 | out_close: |
1137 | CIFSSMBClose(xid, tcon, netfid); | |
1138 | out: | |
3270958b | 1139 | kfree(info_buf); |
7ffec372 | 1140 | cifs_put_tlink(tlink); |
a12a1ac7 | 1141 | return rc; |
3270958b SF |
1142 | |
1143 | /* | |
1144 | * reset everything back to the original state. Don't bother | |
1145 | * dealing with errors here since we can't do anything about | |
1146 | * them anyway. | |
1147 | */ | |
1148 | undo_rename: | |
1149 | CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name, | |
1150 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & | |
1151 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1152 | undo_setattr: | |
1153 | if (dosattr != origattr) { | |
1154 | info_buf->Attributes = cpu_to_le32(origattr); | |
1155 | if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, | |
1156 | current->tgid)) | |
1157 | cifsInode->cifsAttrs = origattr; | |
1158 | } | |
1159 | ||
1160 | goto out_close; | |
a12a1ac7 JL |
1161 | } |
1162 | ||
ff694527 SF |
1163 | |
1164 | /* | |
1165 | * If dentry->d_inode is null (usually meaning the cached dentry | |
1166 | * is a negative dentry) then we would attempt a standard SMB delete, but | |
af901ca1 AGR |
1167 | * if that fails we can not attempt the fall back mechanisms on EACCESS |
1168 | * but will return the EACCESS to the caller. Note that the VFS does not call | |
ff694527 SF |
1169 | * unlink on negative dentries currently. |
1170 | */ | |
5f0319a7 | 1171 | int cifs_unlink(struct inode *dir, struct dentry *dentry) |
1da177e4 LT |
1172 | { |
1173 | int rc = 0; | |
1174 | int xid; | |
1da177e4 | 1175 | char *full_path = NULL; |
5f0319a7 | 1176 | struct inode *inode = dentry->d_inode; |
ff694527 | 1177 | struct cifsInodeInfo *cifs_inode; |
5f0319a7 JL |
1178 | struct super_block *sb = dir->i_sb; |
1179 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
7ffec372 | 1180 | struct tcon_link *tlink; |
96daf2b0 | 1181 | struct cifs_tcon *tcon; |
6050247d SF |
1182 | struct iattr *attrs = NULL; |
1183 | __u32 dosattr = 0, origattr = 0; | |
1da177e4 | 1184 | |
b6b38f70 | 1185 | cFYI(1, "cifs_unlink, dir=0x%p, dentry=0x%p", dir, dentry); |
1da177e4 | 1186 | |
7ffec372 JL |
1187 | tlink = cifs_sb_tlink(cifs_sb); |
1188 | if (IS_ERR(tlink)) | |
1189 | return PTR_ERR(tlink); | |
1190 | tcon = tlink_tcon(tlink); | |
1191 | ||
1da177e4 LT |
1192 | xid = GetXid(); |
1193 | ||
5f0319a7 JL |
1194 | /* Unlink can be called from rename so we can not take the |
1195 | * sb->s_vfs_rename_mutex here */ | |
1196 | full_path = build_path_from_dentry(dentry); | |
1da177e4 | 1197 | if (full_path == NULL) { |
0f3bc09e | 1198 | rc = -ENOMEM; |
7ffec372 | 1199 | goto unlink_out; |
1da177e4 | 1200 | } |
2d785a50 | 1201 | |
5f0319a7 | 1202 | if ((tcon->ses->capabilities & CAP_UNIX) && |
2d785a50 | 1203 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
5f0319a7 JL |
1204 | le64_to_cpu(tcon->fsUnixInfo.Capability))) { |
1205 | rc = CIFSPOSIXDelFile(xid, tcon, full_path, | |
2d785a50 | 1206 | SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls, |
737b758c | 1207 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
b6b38f70 | 1208 | cFYI(1, "posix del rc %d", rc); |
2d785a50 SF |
1209 | if ((rc == 0) || (rc == -ENOENT)) |
1210 | goto psx_del_no_retry; | |
1211 | } | |
1da177e4 | 1212 | |
6050247d | 1213 | retry_std_delete: |
5f0319a7 | 1214 | rc = CIFSSMBDelFile(xid, tcon, full_path, cifs_sb->local_nls, |
2d785a50 | 1215 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
6050247d | 1216 | |
2d785a50 | 1217 | psx_del_no_retry: |
1da177e4 | 1218 | if (!rc) { |
5f0319a7 JL |
1219 | if (inode) |
1220 | drop_nlink(inode); | |
1da177e4 | 1221 | } else if (rc == -ENOENT) { |
5f0319a7 | 1222 | d_drop(dentry); |
1da177e4 | 1223 | } else if (rc == -ETXTBSY) { |
3270958b | 1224 | rc = cifs_rename_pending_delete(full_path, dentry, xid); |
a12a1ac7 JL |
1225 | if (rc == 0) |
1226 | drop_nlink(inode); | |
ff694527 | 1227 | } else if ((rc == -EACCES) && (dosattr == 0) && inode) { |
388e57b2 SF |
1228 | attrs = kzalloc(sizeof(*attrs), GFP_KERNEL); |
1229 | if (attrs == NULL) { | |
1230 | rc = -ENOMEM; | |
1231 | goto out_reval; | |
1da177e4 | 1232 | } |
388e57b2 SF |
1233 | |
1234 | /* try to reset dos attributes */ | |
ff694527 SF |
1235 | cifs_inode = CIFS_I(inode); |
1236 | origattr = cifs_inode->cifsAttrs; | |
6050247d SF |
1237 | if (origattr == 0) |
1238 | origattr |= ATTR_NORMAL; | |
1239 | dosattr = origattr & ~ATTR_READONLY; | |
388e57b2 SF |
1240 | if (dosattr == 0) |
1241 | dosattr |= ATTR_NORMAL; | |
1242 | dosattr |= ATTR_HIDDEN; | |
1243 | ||
1244 | rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); | |
388e57b2 SF |
1245 | if (rc != 0) |
1246 | goto out_reval; | |
6050247d SF |
1247 | |
1248 | goto retry_std_delete; | |
1da177e4 | 1249 | } |
6050247d SF |
1250 | |
1251 | /* undo the setattr if we errored out and it's needed */ | |
1252 | if (rc != 0 && dosattr != 0) | |
1253 | cifs_set_file_info(inode, attrs, xid, full_path, origattr); | |
1254 | ||
388e57b2 | 1255 | out_reval: |
4523cc30 | 1256 | if (inode) { |
ff694527 SF |
1257 | cifs_inode = CIFS_I(inode); |
1258 | cifs_inode->time = 0; /* will force revalidate to get info | |
5f0319a7 JL |
1259 | when needed */ |
1260 | inode->i_ctime = current_fs_time(sb); | |
06bcfedd | 1261 | } |
5f0319a7 | 1262 | dir->i_ctime = dir->i_mtime = current_fs_time(sb); |
ff694527 | 1263 | cifs_inode = CIFS_I(dir); |
6050247d | 1264 | CIFS_I(dir)->time = 0; /* force revalidate of dir as well */ |
7ffec372 | 1265 | unlink_out: |
1da177e4 | 1266 | kfree(full_path); |
6050247d | 1267 | kfree(attrs); |
1da177e4 | 1268 | FreeXid(xid); |
7ffec372 | 1269 | cifs_put_tlink(tlink); |
1da177e4 LT |
1270 | return rc; |
1271 | } | |
1272 | ||
18bb1db3 | 1273 | int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode) |
1da177e4 | 1274 | { |
6b37faa1 | 1275 | int rc = 0, tmprc; |
1da177e4 LT |
1276 | int xid; |
1277 | struct cifs_sb_info *cifs_sb; | |
7ffec372 | 1278 | struct tcon_link *tlink; |
96daf2b0 | 1279 | struct cifs_tcon *pTcon; |
1da177e4 LT |
1280 | char *full_path = NULL; |
1281 | struct inode *newinode = NULL; | |
cc0bad75 | 1282 | struct cifs_fattr fattr; |
1da177e4 | 1283 | |
18bb1db3 | 1284 | cFYI(1, "In cifs_mkdir, mode = 0x%hx inode = 0x%p", mode, inode); |
1da177e4 | 1285 | |
1da177e4 | 1286 | cifs_sb = CIFS_SB(inode->i_sb); |
7ffec372 JL |
1287 | tlink = cifs_sb_tlink(cifs_sb); |
1288 | if (IS_ERR(tlink)) | |
1289 | return PTR_ERR(tlink); | |
1290 | pTcon = tlink_tcon(tlink); | |
1291 | ||
1292 | xid = GetXid(); | |
1da177e4 | 1293 | |
7f57356b | 1294 | full_path = build_path_from_dentry(direntry); |
1da177e4 | 1295 | if (full_path == NULL) { |
0f3bc09e | 1296 | rc = -ENOMEM; |
7ffec372 | 1297 | goto mkdir_out; |
1da177e4 | 1298 | } |
50c2f753 | 1299 | |
fb8c4b14 SF |
1300 | if ((pTcon->ses->capabilities & CAP_UNIX) && |
1301 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & | |
2dd29d31 SF |
1302 | le64_to_cpu(pTcon->fsUnixInfo.Capability))) { |
1303 | u32 oplock = 0; | |
f6d09982 | 1304 | FILE_UNIX_BASIC_INFO *pInfo = |
2dd29d31 | 1305 | kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
fb8c4b14 | 1306 | if (pInfo == NULL) { |
2dd29d31 SF |
1307 | rc = -ENOMEM; |
1308 | goto mkdir_out; | |
1309 | } | |
50c2f753 | 1310 | |
ce3b0f8d | 1311 | mode &= ~current_umask(); |
2dd29d31 SF |
1312 | rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT, |
1313 | mode, NULL /* netfid */, pInfo, &oplock, | |
fb8c4b14 SF |
1314 | full_path, cifs_sb->local_nls, |
1315 | cifs_sb->mnt_cifs_flags & | |
2dd29d31 | 1316 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
c45d707f SF |
1317 | if (rc == -EOPNOTSUPP) { |
1318 | kfree(pInfo); | |
1319 | goto mkdir_retry_old; | |
1320 | } else if (rc) { | |
b6b38f70 | 1321 | cFYI(1, "posix mkdir returned 0x%x", rc); |
2dd29d31 SF |
1322 | d_drop(direntry); |
1323 | } else { | |
8f2376ad CG |
1324 | if (pInfo->Type == cpu_to_le32(-1)) { |
1325 | /* no return info, go query for it */ | |
5a07cdf8 | 1326 | kfree(pInfo); |
fb8c4b14 | 1327 | goto mkdir_get_info; |
5a07cdf8 | 1328 | } |
fb8c4b14 SF |
1329 | /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need |
1330 | to set uid/gid */ | |
cbac3cba | 1331 | |
cc0bad75 | 1332 | cifs_unix_basic_to_fattr(&fattr, pInfo, cifs_sb); |
4065c802 | 1333 | cifs_fill_uniqueid(inode->i_sb, &fattr); |
cc0bad75 JL |
1334 | newinode = cifs_iget(inode->i_sb, &fattr); |
1335 | if (!newinode) { | |
5a07cdf8 | 1336 | kfree(pInfo); |
cbac3cba | 1337 | goto mkdir_get_info; |
5a07cdf8 | 1338 | } |
6b37faa1 | 1339 | |
2dd29d31 | 1340 | d_instantiate(direntry, newinode); |
cbac3cba | 1341 | |
cbac3cba | 1342 | #ifdef CONFIG_CIFS_DEBUG2 |
b6b38f70 JP |
1343 | cFYI(1, "instantiated dentry %p %s to inode %p", |
1344 | direntry, direntry->d_name.name, newinode); | |
cbac3cba | 1345 | |
fb8c4b14 | 1346 | if (newinode->i_nlink != 2) |
b6b38f70 JP |
1347 | cFYI(1, "unexpected number of links %d", |
1348 | newinode->i_nlink); | |
cbac3cba | 1349 | #endif |
2dd29d31 SF |
1350 | } |
1351 | kfree(pInfo); | |
1352 | goto mkdir_out; | |
fb8c4b14 | 1353 | } |
c45d707f | 1354 | mkdir_retry_old: |
1da177e4 | 1355 | /* BB add setting the equivalent of mode via CreateX w/ACLs */ |
737b758c SF |
1356 | rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls, |
1357 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 | 1358 | if (rc) { |
b6b38f70 | 1359 | cFYI(1, "cifs_mkdir returned 0x%x", rc); |
1da177e4 LT |
1360 | d_drop(direntry); |
1361 | } else { | |
fb8c4b14 | 1362 | mkdir_get_info: |
c18c842b | 1363 | if (pTcon->unix_ext) |
1da177e4 | 1364 | rc = cifs_get_inode_info_unix(&newinode, full_path, |
fb8c4b14 | 1365 | inode->i_sb, xid); |
1da177e4 LT |
1366 | else |
1367 | rc = cifs_get_inode_info(&newinode, full_path, NULL, | |
8b1327f6 | 1368 | inode->i_sb, xid, NULL); |
1da177e4 | 1369 | |
1da177e4 | 1370 | d_instantiate(direntry, newinode); |
2dd29d31 | 1371 | /* setting nlink not necessary except in cases where we |
fb8c4b14 | 1372 | * failed to get it from the server or was set bogus */ |
2dd29d31 | 1373 | if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2)) |
bfe86848 | 1374 | set_nlink(direntry->d_inode, 2); |
95089910 | 1375 | |
ce3b0f8d | 1376 | mode &= ~current_umask(); |
95089910 JL |
1377 | /* must turn on setgid bit if parent dir has it */ |
1378 | if (inode->i_mode & S_ISGID) | |
1379 | mode |= S_ISGID; | |
1380 | ||
c18c842b | 1381 | if (pTcon->unix_ext) { |
4e1e7fb9 JL |
1382 | struct cifs_unix_set_info_args args = { |
1383 | .mode = mode, | |
1384 | .ctime = NO_CHANGE_64, | |
1385 | .atime = NO_CHANGE_64, | |
1386 | .mtime = NO_CHANGE_64, | |
1387 | .device = 0, | |
1388 | }; | |
d0d2f2df | 1389 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
a001e5b5 | 1390 | args.uid = (__u64)current_fsuid(); |
95089910 JL |
1391 | if (inode->i_mode & S_ISGID) |
1392 | args.gid = (__u64)inode->i_gid; | |
1393 | else | |
a001e5b5 | 1394 | args.gid = (__u64)current_fsgid(); |
1da177e4 | 1395 | } else { |
4e1e7fb9 JL |
1396 | args.uid = NO_CHANGE_64; |
1397 | args.gid = NO_CHANGE_64; | |
1da177e4 | 1398 | } |
01ea95e3 JL |
1399 | CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args, |
1400 | cifs_sb->local_nls, | |
1401 | cifs_sb->mnt_cifs_flags & | |
1402 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
3ce53fc4 | 1403 | } else { |
67750fb9 JL |
1404 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) && |
1405 | (mode & S_IWUGO) == 0) { | |
1406 | FILE_BASIC_INFO pInfo; | |
6b37faa1 JL |
1407 | struct cifsInodeInfo *cifsInode; |
1408 | u32 dosattrs; | |
1409 | ||
67750fb9 | 1410 | memset(&pInfo, 0, sizeof(pInfo)); |
6b37faa1 JL |
1411 | cifsInode = CIFS_I(newinode); |
1412 | dosattrs = cifsInode->cifsAttrs|ATTR_READONLY; | |
1413 | pInfo.Attributes = cpu_to_le32(dosattrs); | |
1414 | tmprc = CIFSSMBSetPathInfo(xid, pTcon, | |
1415 | full_path, &pInfo, | |
1416 | cifs_sb->local_nls, | |
67750fb9 JL |
1417 | cifs_sb->mnt_cifs_flags & |
1418 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
6b37faa1 JL |
1419 | if (tmprc == 0) |
1420 | cifsInode->cifsAttrs = dosattrs; | |
67750fb9 | 1421 | } |
fb8c4b14 | 1422 | if (direntry->d_inode) { |
b0fd30d3 JL |
1423 | if (cifs_sb->mnt_cifs_flags & |
1424 | CIFS_MOUNT_DYNPERM) | |
1425 | direntry->d_inode->i_mode = | |
1426 | (mode | S_IFDIR); | |
4e94a105 | 1427 | |
fb8c4b14 | 1428 | if (cifs_sb->mnt_cifs_flags & |
6473a559 | 1429 | CIFS_MOUNT_SET_UID) { |
fb8c4b14 | 1430 | direntry->d_inode->i_uid = |
a001e5b5 | 1431 | current_fsuid(); |
95089910 JL |
1432 | if (inode->i_mode & S_ISGID) |
1433 | direntry->d_inode->i_gid = | |
1434 | inode->i_gid; | |
1435 | else | |
1436 | direntry->d_inode->i_gid = | |
a001e5b5 | 1437 | current_fsgid(); |
6473a559 SF |
1438 | } |
1439 | } | |
2a138ebb | 1440 | } |
1da177e4 | 1441 | } |
fb8c4b14 | 1442 | mkdir_out: |
6de2ce42 PS |
1443 | /* |
1444 | * Force revalidate to get parent dir info when needed since cached | |
1445 | * attributes are invalid now. | |
1446 | */ | |
1447 | CIFS_I(inode)->time = 0; | |
1da177e4 LT |
1448 | kfree(full_path); |
1449 | FreeXid(xid); | |
7ffec372 | 1450 | cifs_put_tlink(tlink); |
1da177e4 LT |
1451 | return rc; |
1452 | } | |
1453 | ||
1454 | int cifs_rmdir(struct inode *inode, struct dentry *direntry) | |
1455 | { | |
1456 | int rc = 0; | |
1457 | int xid; | |
1458 | struct cifs_sb_info *cifs_sb; | |
7ffec372 | 1459 | struct tcon_link *tlink; |
96daf2b0 | 1460 | struct cifs_tcon *pTcon; |
1da177e4 LT |
1461 | char *full_path = NULL; |
1462 | struct cifsInodeInfo *cifsInode; | |
1463 | ||
b6b38f70 | 1464 | cFYI(1, "cifs_rmdir, inode = 0x%p", inode); |
1da177e4 LT |
1465 | |
1466 | xid = GetXid(); | |
1467 | ||
7f57356b | 1468 | full_path = build_path_from_dentry(direntry); |
1da177e4 | 1469 | if (full_path == NULL) { |
0f3bc09e | 1470 | rc = -ENOMEM; |
7ffec372 | 1471 | goto rmdir_exit; |
1da177e4 LT |
1472 | } |
1473 | ||
7ffec372 JL |
1474 | cifs_sb = CIFS_SB(inode->i_sb); |
1475 | tlink = cifs_sb_tlink(cifs_sb); | |
1476 | if (IS_ERR(tlink)) { | |
1477 | rc = PTR_ERR(tlink); | |
1478 | goto rmdir_exit; | |
1479 | } | |
1480 | pTcon = tlink_tcon(tlink); | |
1481 | ||
737b758c SF |
1482 | rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, |
1483 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 1484 | cifs_put_tlink(tlink); |
1da177e4 LT |
1485 | |
1486 | if (!rc) { | |
3677db10 | 1487 | spin_lock(&direntry->d_inode->i_lock); |
fb8c4b14 | 1488 | i_size_write(direntry->d_inode, 0); |
ce71ec36 | 1489 | clear_nlink(direntry->d_inode); |
3677db10 | 1490 | spin_unlock(&direntry->d_inode->i_lock); |
1da177e4 LT |
1491 | } |
1492 | ||
1493 | cifsInode = CIFS_I(direntry->d_inode); | |
6de2ce42 PS |
1494 | /* force revalidate to go get info when needed */ |
1495 | cifsInode->time = 0; | |
42c24544 SF |
1496 | |
1497 | cifsInode = CIFS_I(inode); | |
6de2ce42 PS |
1498 | /* |
1499 | * Force revalidate to get parent dir info when needed since cached | |
1500 | * attributes are invalid now. | |
1501 | */ | |
1502 | cifsInode->time = 0; | |
42c24544 | 1503 | |
1da177e4 LT |
1504 | direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = |
1505 | current_fs_time(inode->i_sb); | |
1506 | ||
7ffec372 | 1507 | rmdir_exit: |
1da177e4 LT |
1508 | kfree(full_path); |
1509 | FreeXid(xid); | |
1510 | return rc; | |
1511 | } | |
1512 | ||
ee2fd967 SF |
1513 | static int |
1514 | cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath, | |
1515 | struct dentry *to_dentry, const char *toPath) | |
1516 | { | |
1517 | struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb); | |
7ffec372 | 1518 | struct tcon_link *tlink; |
96daf2b0 | 1519 | struct cifs_tcon *pTcon; |
ee2fd967 SF |
1520 | __u16 srcfid; |
1521 | int oplock, rc; | |
1522 | ||
7ffec372 JL |
1523 | tlink = cifs_sb_tlink(cifs_sb); |
1524 | if (IS_ERR(tlink)) | |
1525 | return PTR_ERR(tlink); | |
1526 | pTcon = tlink_tcon(tlink); | |
1527 | ||
ee2fd967 SF |
1528 | /* try path-based rename first */ |
1529 | rc = CIFSSMBRename(xid, pTcon, fromPath, toPath, cifs_sb->local_nls, | |
1530 | cifs_sb->mnt_cifs_flags & | |
1531 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1532 | ||
1533 | /* | |
1534 | * don't bother with rename by filehandle unless file is busy and | |
1535 | * source Note that cross directory moves do not work with | |
1536 | * rename by filehandle to various Windows servers. | |
1537 | */ | |
1538 | if (rc == 0 || rc != -ETXTBSY) | |
7ffec372 | 1539 | goto do_rename_exit; |
ee2fd967 | 1540 | |
ed0e3ace JL |
1541 | /* open-file renames don't work across directories */ |
1542 | if (to_dentry->d_parent != from_dentry->d_parent) | |
7ffec372 | 1543 | goto do_rename_exit; |
ed0e3ace | 1544 | |
ee2fd967 SF |
1545 | /* open the file to be renamed -- we need DELETE perms */ |
1546 | rc = CIFSSMBOpen(xid, pTcon, fromPath, FILE_OPEN, DELETE, | |
1547 | CREATE_NOT_DIR, &srcfid, &oplock, NULL, | |
1548 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & | |
1549 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1550 | ||
1551 | if (rc == 0) { | |
1552 | rc = CIFSSMBRenameOpenFile(xid, pTcon, srcfid, | |
1553 | (const char *) to_dentry->d_name.name, | |
1554 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & | |
1555 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1556 | ||
1557 | CIFSSMBClose(xid, pTcon, srcfid); | |
1558 | } | |
7ffec372 JL |
1559 | do_rename_exit: |
1560 | cifs_put_tlink(tlink); | |
ee2fd967 SF |
1561 | return rc; |
1562 | } | |
1563 | ||
14121bdc JL |
1564 | int cifs_rename(struct inode *source_dir, struct dentry *source_dentry, |
1565 | struct inode *target_dir, struct dentry *target_dentry) | |
1da177e4 | 1566 | { |
ee2fd967 SF |
1567 | char *fromName = NULL; |
1568 | char *toName = NULL; | |
639e7a91 | 1569 | struct cifs_sb_info *cifs_sb; |
7ffec372 | 1570 | struct tcon_link *tlink; |
96daf2b0 | 1571 | struct cifs_tcon *tcon; |
ee2fd967 SF |
1572 | FILE_UNIX_BASIC_INFO *info_buf_source = NULL; |
1573 | FILE_UNIX_BASIC_INFO *info_buf_target; | |
8d281efb | 1574 | int xid, rc, tmprc; |
1da177e4 | 1575 | |
639e7a91 | 1576 | cifs_sb = CIFS_SB(source_dir->i_sb); |
7ffec372 JL |
1577 | tlink = cifs_sb_tlink(cifs_sb); |
1578 | if (IS_ERR(tlink)) | |
1579 | return PTR_ERR(tlink); | |
1580 | tcon = tlink_tcon(tlink); | |
1da177e4 | 1581 | |
ee2fd967 SF |
1582 | xid = GetXid(); |
1583 | ||
ee2fd967 SF |
1584 | /* |
1585 | * we already have the rename sem so we do not need to | |
1586 | * grab it again here to protect the path integrity | |
1587 | */ | |
14121bdc | 1588 | fromName = build_path_from_dentry(source_dentry); |
ee2fd967 SF |
1589 | if (fromName == NULL) { |
1590 | rc = -ENOMEM; | |
1591 | goto cifs_rename_exit; | |
1592 | } | |
1593 | ||
14121bdc | 1594 | toName = build_path_from_dentry(target_dentry); |
ee2fd967 | 1595 | if (toName == NULL) { |
1da177e4 LT |
1596 | rc = -ENOMEM; |
1597 | goto cifs_rename_exit; | |
1598 | } | |
1599 | ||
14121bdc JL |
1600 | rc = cifs_do_rename(xid, source_dentry, fromName, |
1601 | target_dentry, toName); | |
ee2fd967 | 1602 | |
14121bdc JL |
1603 | if (rc == -EEXIST && tcon->unix_ext) { |
1604 | /* | |
1605 | * Are src and dst hardlinks of same inode? We can | |
1606 | * only tell with unix extensions enabled | |
1607 | */ | |
1608 | info_buf_source = | |
1609 | kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), | |
1610 | GFP_KERNEL); | |
1611 | if (info_buf_source == NULL) { | |
1612 | rc = -ENOMEM; | |
1613 | goto cifs_rename_exit; | |
1614 | } | |
1615 | ||
1616 | info_buf_target = info_buf_source + 1; | |
8d281efb | 1617 | tmprc = CIFSSMBUnixQPathInfo(xid, tcon, fromName, |
14121bdc | 1618 | info_buf_source, |
639e7a91 JL |
1619 | cifs_sb->local_nls, |
1620 | cifs_sb->mnt_cifs_flags & | |
14121bdc | 1621 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
8d281efb | 1622 | if (tmprc != 0) |
14121bdc | 1623 | goto unlink_target; |
ee2fd967 | 1624 | |
639e7a91 JL |
1625 | tmprc = CIFSSMBUnixQPathInfo(xid, tcon, toName, |
1626 | info_buf_target, | |
1627 | cifs_sb->local_nls, | |
1628 | cifs_sb->mnt_cifs_flags & | |
14121bdc JL |
1629 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
1630 | ||
8d281efb | 1631 | if (tmprc == 0 && (info_buf_source->UniqueId == |
ae6884a9 | 1632 | info_buf_target->UniqueId)) { |
14121bdc | 1633 | /* same file, POSIX says that this is a noop */ |
ae6884a9 | 1634 | rc = 0; |
14121bdc | 1635 | goto cifs_rename_exit; |
ae6884a9 | 1636 | } |
14121bdc | 1637 | } /* else ... BB we could add the same check for Windows by |
ee2fd967 | 1638 | checking the UniqueId via FILE_INTERNAL_INFO */ |
14121bdc | 1639 | |
ee2fd967 | 1640 | unlink_target: |
fc6f3943 JL |
1641 | /* Try unlinking the target dentry if it's not negative */ |
1642 | if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) { | |
8d281efb | 1643 | tmprc = cifs_unlink(target_dir, target_dentry); |
14121bdc JL |
1644 | if (tmprc) |
1645 | goto cifs_rename_exit; | |
1646 | ||
14121bdc JL |
1647 | rc = cifs_do_rename(xid, source_dentry, fromName, |
1648 | target_dentry, toName); | |
1da177e4 LT |
1649 | } |
1650 | ||
1651 | cifs_rename_exit: | |
ee2fd967 | 1652 | kfree(info_buf_source); |
1da177e4 LT |
1653 | kfree(fromName); |
1654 | kfree(toName); | |
1655 | FreeXid(xid); | |
7ffec372 | 1656 | cifs_put_tlink(tlink); |
1da177e4 LT |
1657 | return rc; |
1658 | } | |
1659 | ||
df2cf170 JL |
1660 | static bool |
1661 | cifs_inode_needs_reval(struct inode *inode) | |
1da177e4 | 1662 | { |
df2cf170 | 1663 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
6d20e840 | 1664 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
1da177e4 | 1665 | |
df2cf170 JL |
1666 | if (cifs_i->clientCanCacheRead) |
1667 | return false; | |
1da177e4 | 1668 | |
df2cf170 JL |
1669 | if (!lookupCacheEnabled) |
1670 | return true; | |
1da177e4 | 1671 | |
df2cf170 JL |
1672 | if (cifs_i->time == 0) |
1673 | return true; | |
1da177e4 | 1674 | |
6d20e840 SJ |
1675 | if (!time_in_range(jiffies, cifs_i->time, |
1676 | cifs_i->time + cifs_sb->actimeo)) | |
df2cf170 JL |
1677 | return true; |
1678 | ||
db19272e | 1679 | /* hardlinked files w/ noserverino get "special" treatment */ |
6d20e840 | 1680 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) && |
db19272e JL |
1681 | S_ISREG(inode->i_mode) && inode->i_nlink != 1) |
1682 | return true; | |
1683 | ||
df2cf170 JL |
1684 | return false; |
1685 | } | |
1686 | ||
523fb8c8 SJ |
1687 | /* |
1688 | * Zap the cache. Called when invalid_mapping flag is set. | |
1689 | */ | |
6feb9891 | 1690 | int |
df2cf170 JL |
1691 | cifs_invalidate_mapping(struct inode *inode) |
1692 | { | |
6feb9891 | 1693 | int rc = 0; |
df2cf170 JL |
1694 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
1695 | ||
1696 | cifs_i->invalid_mapping = false; | |
1697 | ||
df2cf170 | 1698 | if (inode->i_mapping && inode->i_mapping->nrpages != 0) { |
257fb1f1 PS |
1699 | rc = invalidate_inode_pages2(inode->i_mapping); |
1700 | if (rc) { | |
1701 | cERROR(1, "%s: could not invalidate inode %p", __func__, | |
1702 | inode); | |
1703 | cifs_i->invalid_mapping = true; | |
1704 | } | |
df2cf170 | 1705 | } |
257fb1f1 | 1706 | |
9451a9a5 | 1707 | cifs_fscache_reset_inode_cookie(inode); |
6feb9891 | 1708 | return rc; |
df2cf170 JL |
1709 | } |
1710 | ||
6feb9891 | 1711 | int cifs_revalidate_file_attr(struct file *filp) |
abab095d JL |
1712 | { |
1713 | int rc = 0; | |
1714 | struct inode *inode = filp->f_path.dentry->d_inode; | |
ba00ba64 | 1715 | struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data; |
abab095d JL |
1716 | |
1717 | if (!cifs_inode_needs_reval(inode)) | |
6feb9891 | 1718 | return rc; |
abab095d | 1719 | |
13cfb733 | 1720 | if (tlink_tcon(cfile->tlink)->unix_ext) |
abab095d JL |
1721 | rc = cifs_get_file_info_unix(filp); |
1722 | else | |
1723 | rc = cifs_get_file_info(filp); | |
1724 | ||
abab095d JL |
1725 | return rc; |
1726 | } | |
1727 | ||
6feb9891 | 1728 | int cifs_revalidate_dentry_attr(struct dentry *dentry) |
df2cf170 JL |
1729 | { |
1730 | int xid; | |
1731 | int rc = 0; | |
df2cf170 JL |
1732 | struct inode *inode = dentry->d_inode; |
1733 | struct super_block *sb = dentry->d_sb; | |
6feb9891 | 1734 | char *full_path = NULL; |
df2cf170 JL |
1735 | |
1736 | if (inode == NULL) | |
1737 | return -ENOENT; | |
1da177e4 | 1738 | |
df2cf170 | 1739 | if (!cifs_inode_needs_reval(inode)) |
6feb9891 PS |
1740 | return rc; |
1741 | ||
1742 | xid = GetXid(); | |
1da177e4 LT |
1743 | |
1744 | /* can not safely grab the rename sem here if rename calls revalidate | |
1745 | since that would deadlock */ | |
df2cf170 | 1746 | full_path = build_path_from_dentry(dentry); |
1da177e4 | 1747 | if (full_path == NULL) { |
0f3bc09e | 1748 | rc = -ENOMEM; |
6feb9891 | 1749 | goto out; |
1da177e4 LT |
1750 | } |
1751 | ||
6feb9891 PS |
1752 | cFYI(1, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time " |
1753 | "%ld jiffies %ld", full_path, inode, inode->i_count.counter, | |
f19159dc | 1754 | dentry, dentry->d_time, jiffies); |
1da177e4 | 1755 | |
0d424ad0 | 1756 | if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext) |
df2cf170 JL |
1757 | rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid); |
1758 | else | |
1759 | rc = cifs_get_inode_info(&inode, full_path, NULL, sb, | |
1760 | xid, NULL); | |
1da177e4 | 1761 | |
6feb9891 | 1762 | out: |
1da177e4 LT |
1763 | kfree(full_path); |
1764 | FreeXid(xid); | |
1765 | return rc; | |
1766 | } | |
1767 | ||
6feb9891 PS |
1768 | int cifs_revalidate_file(struct file *filp) |
1769 | { | |
1770 | int rc; | |
1771 | struct inode *inode = filp->f_path.dentry->d_inode; | |
1772 | ||
1773 | rc = cifs_revalidate_file_attr(filp); | |
1774 | if (rc) | |
1775 | return rc; | |
1776 | ||
1777 | if (CIFS_I(inode)->invalid_mapping) | |
1778 | rc = cifs_invalidate_mapping(inode); | |
1779 | return rc; | |
1780 | } | |
1781 | ||
1782 | /* revalidate a dentry's inode attributes */ | |
1783 | int cifs_revalidate_dentry(struct dentry *dentry) | |
1784 | { | |
1785 | int rc; | |
1786 | struct inode *inode = dentry->d_inode; | |
1787 | ||
1788 | rc = cifs_revalidate_dentry_attr(dentry); | |
1789 | if (rc) | |
1790 | return rc; | |
1791 | ||
1792 | if (CIFS_I(inode)->invalid_mapping) | |
1793 | rc = cifs_invalidate_mapping(inode); | |
1794 | return rc; | |
1795 | } | |
1796 | ||
1da177e4 | 1797 | int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
1c456013 | 1798 | struct kstat *stat) |
1da177e4 | 1799 | { |
3aa1c8c2 | 1800 | struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb); |
96daf2b0 | 1801 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
6feb9891 PS |
1802 | struct inode *inode = dentry->d_inode; |
1803 | int rc; | |
3aa1c8c2 | 1804 | |
6feb9891 PS |
1805 | /* |
1806 | * We need to be sure that all dirty pages are written and the server | |
1807 | * has actual ctime, mtime and file length. | |
1808 | */ | |
1809 | if (!CIFS_I(inode)->clientCanCacheRead && inode->i_mapping && | |
1810 | inode->i_mapping->nrpages != 0) { | |
1811 | rc = filemap_fdatawait(inode->i_mapping); | |
156ecb2d SF |
1812 | if (rc) { |
1813 | mapping_set_error(inode->i_mapping, rc); | |
1814 | return rc; | |
1815 | } | |
6feb9891 | 1816 | } |
1c456013 | 1817 | |
6feb9891 PS |
1818 | rc = cifs_revalidate_dentry_attr(dentry); |
1819 | if (rc) | |
1820 | return rc; | |
1821 | ||
1822 | generic_fillattr(inode, stat); | |
1823 | stat->blksize = CIFS_MAX_MSGSIZE; | |
1824 | stat->ino = CIFS_I(inode)->uniqueid; | |
1825 | ||
1826 | /* | |
1827 | * If on a multiuser mount without unix extensions, and the admin hasn't | |
1828 | * overridden them, set the ownership to the fsuid/fsgid of the current | |
1829 | * process. | |
1830 | */ | |
1831 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) && | |
1832 | !tcon->unix_ext) { | |
1833 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) | |
1834 | stat->uid = current_fsuid(); | |
1835 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) | |
1836 | stat->gid = current_fsgid(); | |
5fe14c85 | 1837 | } |
6feb9891 | 1838 | return rc; |
1da177e4 LT |
1839 | } |
1840 | ||
1841 | static int cifs_truncate_page(struct address_space *mapping, loff_t from) | |
1842 | { | |
1843 | pgoff_t index = from >> PAGE_CACHE_SHIFT; | |
1844 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); | |
1845 | struct page *page; | |
1da177e4 LT |
1846 | int rc = 0; |
1847 | ||
1848 | page = grab_cache_page(mapping, index); | |
1849 | if (!page) | |
1850 | return -ENOMEM; | |
1851 | ||
eebd2aa3 | 1852 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); |
1da177e4 LT |
1853 | unlock_page(page); |
1854 | page_cache_release(page); | |
1855 | return rc; | |
1856 | } | |
1857 | ||
1b947463 | 1858 | static void cifs_setsize(struct inode *inode, loff_t offset) |
3677db10 | 1859 | { |
c08d3b0e | 1860 | loff_t oldsize; |
3677db10 | 1861 | |
ba6a46a0 | 1862 | spin_lock(&inode->i_lock); |
c08d3b0e | 1863 | oldsize = inode->i_size; |
3677db10 | 1864 | i_size_write(inode, offset); |
ba6a46a0 | 1865 | spin_unlock(&inode->i_lock); |
1b947463 | 1866 | |
c08d3b0e | 1867 | truncate_pagecache(inode, oldsize, offset); |
3677db10 SF |
1868 | } |
1869 | ||
8efdbde6 JL |
1870 | static int |
1871 | cifs_set_file_size(struct inode *inode, struct iattr *attrs, | |
1872 | int xid, char *full_path) | |
1873 | { | |
1874 | int rc; | |
1875 | struct cifsFileInfo *open_file; | |
1876 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); | |
1877 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
7ffec372 | 1878 | struct tcon_link *tlink = NULL; |
96daf2b0 | 1879 | struct cifs_tcon *pTcon = NULL; |
fa2989f4 | 1880 | struct cifs_io_parms io_parms; |
8efdbde6 JL |
1881 | |
1882 | /* | |
1883 | * To avoid spurious oplock breaks from server, in the case of | |
1884 | * inodes that we already have open, avoid doing path based | |
1885 | * setting of file size if we can do it by handle. | |
1886 | * This keeps our caching token (oplock) and avoids timeouts | |
1887 | * when the local oplock break takes longer to flush | |
1888 | * writebehind data than the SMB timeout for the SetPathInfo | |
1889 | * request would allow | |
1890 | */ | |
6508d904 | 1891 | open_file = find_writable_file(cifsInode, true); |
8efdbde6 JL |
1892 | if (open_file) { |
1893 | __u16 nfid = open_file->netfid; | |
1894 | __u32 npid = open_file->pid; | |
13cfb733 | 1895 | pTcon = tlink_tcon(open_file->tlink); |
8efdbde6 JL |
1896 | rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid, |
1897 | npid, false); | |
6ab409b5 | 1898 | cifsFileInfo_put(open_file); |
b6b38f70 | 1899 | cFYI(1, "SetFSize for attrs rc = %d", rc); |
8efdbde6 JL |
1900 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
1901 | unsigned int bytes_written; | |
fa2989f4 PS |
1902 | |
1903 | io_parms.netfid = nfid; | |
1904 | io_parms.pid = npid; | |
1905 | io_parms.tcon = pTcon; | |
1906 | io_parms.offset = 0; | |
1907 | io_parms.length = attrs->ia_size; | |
1908 | rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, | |
1909 | NULL, NULL, 1); | |
b6b38f70 | 1910 | cFYI(1, "Wrt seteof rc %d", rc); |
8efdbde6 JL |
1911 | } |
1912 | } else | |
1913 | rc = -EINVAL; | |
1914 | ||
1915 | if (rc != 0) { | |
7ffec372 JL |
1916 | if (pTcon == NULL) { |
1917 | tlink = cifs_sb_tlink(cifs_sb); | |
1918 | if (IS_ERR(tlink)) | |
1919 | return PTR_ERR(tlink); | |
1920 | pTcon = tlink_tcon(tlink); | |
1921 | } | |
ba00ba64 | 1922 | |
8efdbde6 JL |
1923 | /* Set file size by pathname rather than by handle |
1924 | either because no valid, writeable file handle for | |
1925 | it was found or because there was an error setting | |
1926 | it by handle */ | |
1927 | rc = CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, | |
1928 | false, cifs_sb->local_nls, | |
1929 | cifs_sb->mnt_cifs_flags & | |
1930 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
b6b38f70 | 1931 | cFYI(1, "SetEOF by path (setattrs) rc = %d", rc); |
8efdbde6 JL |
1932 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
1933 | __u16 netfid; | |
1934 | int oplock = 0; | |
1935 | ||
1936 | rc = SMBLegacyOpen(xid, pTcon, full_path, | |
1937 | FILE_OPEN, GENERIC_WRITE, | |
1938 | CREATE_NOT_DIR, &netfid, &oplock, NULL, | |
1939 | cifs_sb->local_nls, | |
1940 | cifs_sb->mnt_cifs_flags & | |
1941 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1942 | if (rc == 0) { | |
1943 | unsigned int bytes_written; | |
fa2989f4 PS |
1944 | |
1945 | io_parms.netfid = netfid; | |
1946 | io_parms.pid = current->tgid; | |
1947 | io_parms.tcon = pTcon; | |
1948 | io_parms.offset = 0; | |
1949 | io_parms.length = attrs->ia_size; | |
1950 | rc = CIFSSMBWrite(xid, &io_parms, | |
1951 | &bytes_written, | |
1952 | NULL, NULL, 1); | |
b6b38f70 | 1953 | cFYI(1, "wrt seteof rc %d", rc); |
8efdbde6 JL |
1954 | CIFSSMBClose(xid, pTcon, netfid); |
1955 | } | |
1956 | } | |
7ffec372 JL |
1957 | if (tlink) |
1958 | cifs_put_tlink(tlink); | |
8efdbde6 JL |
1959 | } |
1960 | ||
1961 | if (rc == 0) { | |
fbec9ab9 | 1962 | cifsInode->server_eof = attrs->ia_size; |
1b947463 | 1963 | cifs_setsize(inode, attrs->ia_size); |
8efdbde6 JL |
1964 | cifs_truncate_page(inode->i_mapping, inode->i_size); |
1965 | } | |
1966 | ||
1967 | return rc; | |
1968 | } | |
1969 | ||
3fe5c1dd JL |
1970 | static int |
1971 | cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs) | |
1972 | { | |
1973 | int rc; | |
1974 | int xid; | |
1975 | char *full_path = NULL; | |
1976 | struct inode *inode = direntry->d_inode; | |
1977 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); | |
1978 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
7ffec372 | 1979 | struct tcon_link *tlink; |
96daf2b0 | 1980 | struct cifs_tcon *pTcon; |
3fe5c1dd | 1981 | struct cifs_unix_set_info_args *args = NULL; |
3bbeeb3c | 1982 | struct cifsFileInfo *open_file; |
3fe5c1dd | 1983 | |
b6b38f70 JP |
1984 | cFYI(1, "setattr_unix on file %s attrs->ia_valid=0x%x", |
1985 | direntry->d_name.name, attrs->ia_valid); | |
3fe5c1dd JL |
1986 | |
1987 | xid = GetXid(); | |
1988 | ||
db78b877 CH |
1989 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
1990 | attrs->ia_valid |= ATTR_FORCE; | |
1991 | ||
1992 | rc = inode_change_ok(inode, attrs); | |
1993 | if (rc < 0) | |
1994 | goto out; | |
3fe5c1dd JL |
1995 | |
1996 | full_path = build_path_from_dentry(direntry); | |
1997 | if (full_path == NULL) { | |
1998 | rc = -ENOMEM; | |
1999 | goto out; | |
2000 | } | |
2001 | ||
0f4d634c JL |
2002 | /* |
2003 | * Attempt to flush data before changing attributes. We need to do | |
2004 | * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the | |
2005 | * ownership or mode then we may also need to do this. Here, we take | |
2006 | * the safe way out and just do the flush on all setattr requests. If | |
2007 | * the flush returns error, store it to report later and continue. | |
2008 | * | |
2009 | * BB: This should be smarter. Why bother flushing pages that | |
2010 | * will be truncated anyway? Also, should we error out here if | |
2011 | * the flush returns error? | |
2012 | */ | |
2013 | rc = filemap_write_and_wait(inode->i_mapping); | |
eb4b756b JL |
2014 | mapping_set_error(inode->i_mapping, rc); |
2015 | rc = 0; | |
3fe5c1dd JL |
2016 | |
2017 | if (attrs->ia_valid & ATTR_SIZE) { | |
2018 | rc = cifs_set_file_size(inode, attrs, xid, full_path); | |
2019 | if (rc != 0) | |
2020 | goto out; | |
2021 | } | |
2022 | ||
2023 | /* skip mode change if it's just for clearing setuid/setgid */ | |
2024 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) | |
2025 | attrs->ia_valid &= ~ATTR_MODE; | |
2026 | ||
2027 | args = kmalloc(sizeof(*args), GFP_KERNEL); | |
2028 | if (args == NULL) { | |
2029 | rc = -ENOMEM; | |
2030 | goto out; | |
2031 | } | |
2032 | ||
2033 | /* set up the struct */ | |
2034 | if (attrs->ia_valid & ATTR_MODE) | |
2035 | args->mode = attrs->ia_mode; | |
2036 | else | |
2037 | args->mode = NO_CHANGE_64; | |
2038 | ||
2039 | if (attrs->ia_valid & ATTR_UID) | |
2040 | args->uid = attrs->ia_uid; | |
2041 | else | |
2042 | args->uid = NO_CHANGE_64; | |
2043 | ||
2044 | if (attrs->ia_valid & ATTR_GID) | |
2045 | args->gid = attrs->ia_gid; | |
2046 | else | |
2047 | args->gid = NO_CHANGE_64; | |
2048 | ||
2049 | if (attrs->ia_valid & ATTR_ATIME) | |
2050 | args->atime = cifs_UnixTimeToNT(attrs->ia_atime); | |
2051 | else | |
2052 | args->atime = NO_CHANGE_64; | |
2053 | ||
2054 | if (attrs->ia_valid & ATTR_MTIME) | |
2055 | args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime); | |
2056 | else | |
2057 | args->mtime = NO_CHANGE_64; | |
2058 | ||
2059 | if (attrs->ia_valid & ATTR_CTIME) | |
2060 | args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime); | |
2061 | else | |
2062 | args->ctime = NO_CHANGE_64; | |
2063 | ||
2064 | args->device = 0; | |
6508d904 | 2065 | open_file = find_writable_file(cifsInode, true); |
3bbeeb3c JL |
2066 | if (open_file) { |
2067 | u16 nfid = open_file->netfid; | |
2068 | u32 npid = open_file->pid; | |
13cfb733 | 2069 | pTcon = tlink_tcon(open_file->tlink); |
3bbeeb3c | 2070 | rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid); |
6ab409b5 | 2071 | cifsFileInfo_put(open_file); |
3bbeeb3c | 2072 | } else { |
7ffec372 JL |
2073 | tlink = cifs_sb_tlink(cifs_sb); |
2074 | if (IS_ERR(tlink)) { | |
2075 | rc = PTR_ERR(tlink); | |
2076 | goto out; | |
2077 | } | |
2078 | pTcon = tlink_tcon(tlink); | |
3bbeeb3c | 2079 | rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args, |
01ea95e3 JL |
2080 | cifs_sb->local_nls, |
2081 | cifs_sb->mnt_cifs_flags & | |
2082 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 2083 | cifs_put_tlink(tlink); |
3bbeeb3c | 2084 | } |
3fe5c1dd | 2085 | |
1025774c CH |
2086 | if (rc) |
2087 | goto out; | |
ccd4bb1b | 2088 | |
1025774c | 2089 | if ((attrs->ia_valid & ATTR_SIZE) && |
1b947463 CH |
2090 | attrs->ia_size != i_size_read(inode)) |
2091 | truncate_setsize(inode, attrs->ia_size); | |
1025774c CH |
2092 | |
2093 | setattr_copy(inode, attrs); | |
2094 | mark_inode_dirty(inode); | |
2095 | ||
2096 | /* force revalidate when any of these times are set since some | |
2097 | of the fs types (eg ext3, fat) do not have fine enough | |
2098 | time granularity to match protocol, and we do not have a | |
2099 | a way (yet) to query the server fs's time granularity (and | |
2100 | whether it rounds times down). | |
2101 | */ | |
2102 | if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME)) | |
2103 | cifsInode->time = 0; | |
3fe5c1dd JL |
2104 | out: |
2105 | kfree(args); | |
2106 | kfree(full_path); | |
2107 | FreeXid(xid); | |
2108 | return rc; | |
2109 | } | |
2110 | ||
0510eeb7 JL |
2111 | static int |
2112 | cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs) | |
1da177e4 LT |
2113 | { |
2114 | int xid; | |
a5ff3769 SP |
2115 | uid_t uid = NO_CHANGE_32; |
2116 | gid_t gid = NO_CHANGE_32; | |
3fe5c1dd JL |
2117 | struct inode *inode = direntry->d_inode; |
2118 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
3fe5c1dd | 2119 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
1da177e4 LT |
2120 | char *full_path = NULL; |
2121 | int rc = -EACCES; | |
feb3e20c | 2122 | __u32 dosattr = 0; |
4e1e7fb9 | 2123 | __u64 mode = NO_CHANGE_64; |
3fe5c1dd | 2124 | |
1da177e4 LT |
2125 | xid = GetXid(); |
2126 | ||
b6b38f70 JP |
2127 | cFYI(1, "setattr on file %s attrs->iavalid 0x%x", |
2128 | direntry->d_name.name, attrs->ia_valid); | |
6473a559 | 2129 | |
db78b877 CH |
2130 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
2131 | attrs->ia_valid |= ATTR_FORCE; | |
2132 | ||
2133 | rc = inode_change_ok(inode, attrs); | |
2134 | if (rc < 0) { | |
2135 | FreeXid(xid); | |
2136 | return rc; | |
6473a559 | 2137 | } |
50c2f753 | 2138 | |
7f57356b | 2139 | full_path = build_path_from_dentry(direntry); |
1da177e4 | 2140 | if (full_path == NULL) { |
0f3bc09e | 2141 | rc = -ENOMEM; |
1da177e4 | 2142 | FreeXid(xid); |
0f3bc09e | 2143 | return rc; |
1da177e4 | 2144 | } |
1da177e4 | 2145 | |
0f4d634c JL |
2146 | /* |
2147 | * Attempt to flush data before changing attributes. We need to do | |
2148 | * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the | |
2149 | * ownership or mode then we may also need to do this. Here, we take | |
2150 | * the safe way out and just do the flush on all setattr requests. If | |
2151 | * the flush returns error, store it to report later and continue. | |
2152 | * | |
2153 | * BB: This should be smarter. Why bother flushing pages that | |
2154 | * will be truncated anyway? Also, should we error out here if | |
2155 | * the flush returns error? | |
2156 | */ | |
2157 | rc = filemap_write_and_wait(inode->i_mapping); | |
eb4b756b JL |
2158 | mapping_set_error(inode->i_mapping, rc); |
2159 | rc = 0; | |
cea21805 | 2160 | |
50531444 | 2161 | if (attrs->ia_valid & ATTR_SIZE) { |
8efdbde6 JL |
2162 | rc = cifs_set_file_size(inode, attrs, xid, full_path); |
2163 | if (rc != 0) | |
e30dcf3a | 2164 | goto cifs_setattr_exit; |
1da177e4 | 2165 | } |
4ca691a8 | 2166 | |
a5ff3769 SP |
2167 | if (attrs->ia_valid & ATTR_UID) |
2168 | uid = attrs->ia_uid; | |
2169 | ||
2170 | if (attrs->ia_valid & ATTR_GID) | |
2171 | gid = attrs->ia_gid; | |
2172 | ||
2173 | #ifdef CONFIG_CIFS_ACL | |
2174 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { | |
2175 | if (uid != NO_CHANGE_32 || gid != NO_CHANGE_32) { | |
2176 | rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64, | |
2177 | uid, gid); | |
2178 | if (rc) { | |
2179 | cFYI(1, "%s: Setting id failed with error: %d", | |
2180 | __func__, rc); | |
2181 | goto cifs_setattr_exit; | |
2182 | } | |
2183 | } | |
2184 | } else | |
2185 | #endif /* CONFIG_CIFS_ACL */ | |
3fe5c1dd | 2186 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) |
4ca691a8 | 2187 | attrs->ia_valid &= ~(ATTR_UID | ATTR_GID); |
1da177e4 | 2188 | |
d32c4f26 JL |
2189 | /* skip mode change if it's just for clearing setuid/setgid */ |
2190 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) | |
2191 | attrs->ia_valid &= ~ATTR_MODE; | |
2192 | ||
1da177e4 | 2193 | if (attrs->ia_valid & ATTR_MODE) { |
1da177e4 | 2194 | mode = attrs->ia_mode; |
cdbce9c8 | 2195 | rc = 0; |
79df1bae | 2196 | #ifdef CONFIG_CIFS_ACL |
78415d2d | 2197 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
a5ff3769 SP |
2198 | rc = id_mode_to_cifs_acl(inode, full_path, mode, |
2199 | NO_CHANGE_32, NO_CHANGE_32); | |
78415d2d SP |
2200 | if (rc) { |
2201 | cFYI(1, "%s: Setting ACL failed with error: %d", | |
2202 | __func__, rc); | |
2203 | goto cifs_setattr_exit; | |
2204 | } | |
2205 | } else | |
79df1bae | 2206 | #endif /* CONFIG_CIFS_ACL */ |
5132861a JL |
2207 | if (((mode & S_IWUGO) == 0) && |
2208 | (cifsInode->cifsAttrs & ATTR_READONLY) == 0) { | |
feb3e20c JL |
2209 | |
2210 | dosattr = cifsInode->cifsAttrs | ATTR_READONLY; | |
2211 | ||
5132861a JL |
2212 | /* fix up mode if we're not using dynperm */ |
2213 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0) | |
2214 | attrs->ia_mode = inode->i_mode & ~S_IWUGO; | |
2215 | } else if ((mode & S_IWUGO) && | |
2216 | (cifsInode->cifsAttrs & ATTR_READONLY)) { | |
feb3e20c JL |
2217 | |
2218 | dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY; | |
2219 | /* Attributes of 0 are ignored */ | |
2220 | if (dosattr == 0) | |
2221 | dosattr |= ATTR_NORMAL; | |
5132861a JL |
2222 | |
2223 | /* reset local inode permissions to normal */ | |
2224 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { | |
2225 | attrs->ia_mode &= ~(S_IALLUGO); | |
2226 | if (S_ISDIR(inode->i_mode)) | |
2227 | attrs->ia_mode |= | |
2228 | cifs_sb->mnt_dir_mode; | |
2229 | else | |
2230 | attrs->ia_mode |= | |
2231 | cifs_sb->mnt_file_mode; | |
2232 | } | |
2233 | } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { | |
2234 | /* ignore mode change - ATTR_READONLY hasn't changed */ | |
2235 | attrs->ia_valid &= ~ATTR_MODE; | |
1da177e4 | 2236 | } |
1da177e4 LT |
2237 | } |
2238 | ||
feb3e20c JL |
2239 | if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) || |
2240 | ((attrs->ia_valid & ATTR_MODE) && dosattr)) { | |
2241 | rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); | |
2242 | /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */ | |
1da177e4 | 2243 | |
e30dcf3a SF |
2244 | /* Even if error on time set, no sense failing the call if |
2245 | the server would set the time to a reasonable value anyway, | |
2246 | and this check ensures that we are not being called from | |
2247 | sys_utimes in which case we ought to fail the call back to | |
2248 | the user when the server rejects the call */ | |
fb8c4b14 | 2249 | if ((rc) && (attrs->ia_valid & |
feb3e20c | 2250 | (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) |
e30dcf3a | 2251 | rc = 0; |
1da177e4 LT |
2252 | } |
2253 | ||
2254 | /* do not need local check to inode_check_ok since the server does | |
2255 | that */ | |
1025774c CH |
2256 | if (rc) |
2257 | goto cifs_setattr_exit; | |
2258 | ||
2259 | if ((attrs->ia_valid & ATTR_SIZE) && | |
1b947463 CH |
2260 | attrs->ia_size != i_size_read(inode)) |
2261 | truncate_setsize(inode, attrs->ia_size); | |
1025774c CH |
2262 | |
2263 | setattr_copy(inode, attrs); | |
2264 | mark_inode_dirty(inode); | |
1025774c | 2265 | |
e30dcf3a | 2266 | cifs_setattr_exit: |
1da177e4 LT |
2267 | kfree(full_path); |
2268 | FreeXid(xid); | |
2269 | return rc; | |
2270 | } | |
2271 | ||
0510eeb7 JL |
2272 | int |
2273 | cifs_setattr(struct dentry *direntry, struct iattr *attrs) | |
2274 | { | |
2275 | struct inode *inode = direntry->d_inode; | |
2276 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
96daf2b0 | 2277 | struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb); |
0510eeb7 JL |
2278 | |
2279 | if (pTcon->unix_ext) | |
2280 | return cifs_setattr_unix(direntry, attrs); | |
2281 | ||
2282 | return cifs_setattr_nounix(direntry, attrs); | |
2283 | ||
2284 | /* BB: add cifs_setattr_legacy for really old servers */ | |
2285 | } | |
2286 | ||
99ee4dbd | 2287 | #if 0 |
1da177e4 LT |
2288 | void cifs_delete_inode(struct inode *inode) |
2289 | { | |
b6b38f70 | 2290 | cFYI(1, "In cifs_delete_inode, inode = 0x%p", inode); |
1da177e4 LT |
2291 | /* may have to add back in if and when safe distributed caching of |
2292 | directories added e.g. via FindNotify */ | |
2293 | } | |
99ee4dbd | 2294 | #endif |