Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
ef14f0c1 | 20 | #include "xfs_acl.h" |
a844f451 | 21 | #include "xfs_bit.h" |
1da177e4 | 22 | #include "xfs_log.h" |
a844f451 | 23 | #include "xfs_inum.h" |
1da177e4 LT |
24 | #include "xfs_trans.h" |
25 | #include "xfs_sb.h" | |
26 | #include "xfs_ag.h" | |
1da177e4 LT |
27 | #include "xfs_dir2.h" |
28 | #include "xfs_alloc.h" | |
29 | #include "xfs_dmapi.h" | |
30 | #include "xfs_quota.h" | |
31 | #include "xfs_mount.h" | |
1da177e4 | 32 | #include "xfs_bmap_btree.h" |
a844f451 | 33 | #include "xfs_alloc_btree.h" |
1da177e4 | 34 | #include "xfs_ialloc_btree.h" |
1da177e4 | 35 | #include "xfs_dir2_sf.h" |
a844f451 | 36 | #include "xfs_attr_sf.h" |
1da177e4 LT |
37 | #include "xfs_dinode.h" |
38 | #include "xfs_inode.h" | |
39 | #include "xfs_bmap.h" | |
a844f451 NS |
40 | #include "xfs_btree.h" |
41 | #include "xfs_ialloc.h" | |
1da177e4 LT |
42 | #include "xfs_rtalloc.h" |
43 | #include "xfs_error.h" | |
44 | #include "xfs_itable.h" | |
45 | #include "xfs_rw.h" | |
1da177e4 LT |
46 | #include "xfs_attr.h" |
47 | #include "xfs_buf_item.h" | |
48 | #include "xfs_utils.h" | |
739bfb2a | 49 | #include "xfs_vnodeops.h" |
1da177e4 | 50 | |
16f7e0fe | 51 | #include <linux/capability.h> |
1da177e4 LT |
52 | #include <linux/xattr.h> |
53 | #include <linux/namei.h> | |
ef14f0c1 | 54 | #include <linux/posix_acl.h> |
446ada4a | 55 | #include <linux/security.h> |
3ed65264 | 56 | #include <linux/falloc.h> |
f35642e2 | 57 | #include <linux/fiemap.h> |
1da177e4 | 58 | |
42fe2b1f CH |
59 | /* |
60 | * Bring the atime in the XFS inode uptodate. | |
61 | * Used before logging the inode to disk or when the Linux inode goes away. | |
62 | */ | |
63 | void | |
64 | xfs_synchronize_atime( | |
65 | xfs_inode_t *ip) | |
66 | { | |
01651646 | 67 | struct inode *inode = VFS_I(ip); |
42fe2b1f | 68 | |
bf904248 | 69 | if (!(inode->i_state & I_CLEAR)) { |
af048193 CH |
70 | ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; |
71 | ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; | |
42fe2b1f CH |
72 | } |
73 | } | |
74 | ||
5d51eff4 | 75 | /* |
bf904248 | 76 | * If the linux inode is valid, mark it dirty. |
5d51eff4 DC |
77 | * Used when commiting a dirty inode into a transaction so that |
78 | * the inode will get written back by the linux code | |
79 | */ | |
80 | void | |
81 | xfs_mark_inode_dirty_sync( | |
82 | xfs_inode_t *ip) | |
83 | { | |
01651646 | 84 | struct inode *inode = VFS_I(ip); |
5d51eff4 | 85 | |
bf904248 | 86 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) |
af048193 | 87 | mark_inode_dirty_sync(inode); |
5d51eff4 DC |
88 | } |
89 | ||
4aeb664c NS |
90 | /* |
91 | * Change the requested timestamp in the given inode. | |
92 | * We don't lock across timestamp updates, and we don't log them but | |
93 | * we do record the fact that there is dirty information in core. | |
4aeb664c NS |
94 | */ |
95 | void | |
96 | xfs_ichgtime( | |
97 | xfs_inode_t *ip, | |
98 | int flags) | |
99 | { | |
e4f75291 | 100 | struct inode *inode = VFS_I(ip); |
4aeb664c | 101 | timespec_t tv; |
8e5975c8 | 102 | int sync_it = 0; |
4aeb664c | 103 | |
8e5975c8 CH |
104 | tv = current_fs_time(inode->i_sb); |
105 | ||
106 | if ((flags & XFS_ICHGTIME_MOD) && | |
107 | !timespec_equal(&inode->i_mtime, &tv)) { | |
4aeb664c NS |
108 | inode->i_mtime = tv; |
109 | ip->i_d.di_mtime.t_sec = (__int32_t)tv.tv_sec; | |
110 | ip->i_d.di_mtime.t_nsec = (__int32_t)tv.tv_nsec; | |
8e5975c8 | 111 | sync_it = 1; |
4aeb664c | 112 | } |
8e5975c8 CH |
113 | if ((flags & XFS_ICHGTIME_CHG) && |
114 | !timespec_equal(&inode->i_ctime, &tv)) { | |
4aeb664c NS |
115 | inode->i_ctime = tv; |
116 | ip->i_d.di_ctime.t_sec = (__int32_t)tv.tv_sec; | |
117 | ip->i_d.di_ctime.t_nsec = (__int32_t)tv.tv_nsec; | |
8e5975c8 | 118 | sync_it = 1; |
4aeb664c NS |
119 | } |
120 | ||
121 | /* | |
122 | * We update the i_update_core field _after_ changing | |
123 | * the timestamps in order to coordinate properly with | |
124 | * xfs_iflush() so that we don't lose timestamp updates. | |
125 | * This keeps us from having to hold the inode lock | |
126 | * while doing this. We use the SYNCHRONIZE macro to | |
127 | * ensure that the compiler does not reorder the update | |
128 | * of i_update_core above the timestamp updates above. | |
129 | */ | |
8e5975c8 CH |
130 | if (sync_it) { |
131 | SYNCHRONIZE(); | |
132 | ip->i_update_core = 1; | |
94b97e39 | 133 | xfs_mark_inode_dirty_sync(ip); |
8e5975c8 | 134 | } |
4aeb664c NS |
135 | } |
136 | ||
446ada4a NS |
137 | /* |
138 | * Hook in SELinux. This is not quite correct yet, what we really need | |
139 | * here (as we do for default ACLs) is a mechanism by which creation of | |
140 | * these attrs can be journalled at inode creation time (along with the | |
141 | * inode, of course, such that log replay can't cause these to be lost). | |
142 | */ | |
143 | STATIC int | |
416c6d5b | 144 | xfs_init_security( |
af048193 | 145 | struct inode *inode, |
446ada4a NS |
146 | struct inode *dir) |
147 | { | |
af048193 | 148 | struct xfs_inode *ip = XFS_I(inode); |
446ada4a NS |
149 | size_t length; |
150 | void *value; | |
151 | char *name; | |
152 | int error; | |
153 | ||
af048193 CH |
154 | error = security_inode_init_security(inode, dir, &name, |
155 | &value, &length); | |
446ada4a NS |
156 | if (error) { |
157 | if (error == -EOPNOTSUPP) | |
158 | return 0; | |
159 | return -error; | |
160 | } | |
161 | ||
af048193 | 162 | error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); |
446ada4a NS |
163 | |
164 | kfree(name); | |
165 | kfree(value); | |
166 | return error; | |
167 | } | |
168 | ||
556b8b16 BN |
169 | static void |
170 | xfs_dentry_to_name( | |
171 | struct xfs_name *namep, | |
172 | struct dentry *dentry) | |
173 | { | |
174 | namep->name = dentry->d_name.name; | |
175 | namep->len = dentry->d_name.len; | |
176 | } | |
177 | ||
7989cb8e | 178 | STATIC void |
416c6d5b | 179 | xfs_cleanup_inode( |
739bfb2a | 180 | struct inode *dir, |
af048193 | 181 | struct inode *inode, |
8f112e3b | 182 | struct dentry *dentry) |
3a69c7dc | 183 | { |
556b8b16 | 184 | struct xfs_name teardown; |
3a69c7dc YL |
185 | |
186 | /* Oh, the horror. | |
220b5284 | 187 | * If we can't add the ACL or we fail in |
416c6d5b | 188 | * xfs_init_security we must back out. |
3a69c7dc YL |
189 | * ENOSPC can hit here, among other things. |
190 | */ | |
556b8b16 | 191 | xfs_dentry_to_name(&teardown, dentry); |
3a69c7dc | 192 | |
8f112e3b | 193 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
af048193 | 194 | iput(inode); |
3a69c7dc YL |
195 | } |
196 | ||
1da177e4 | 197 | STATIC int |
416c6d5b | 198 | xfs_vn_mknod( |
1da177e4 LT |
199 | struct inode *dir, |
200 | struct dentry *dentry, | |
201 | int mode, | |
202 | dev_t rdev) | |
203 | { | |
db0bb7ba | 204 | struct inode *inode; |
979ebab1 | 205 | struct xfs_inode *ip = NULL; |
ef14f0c1 | 206 | struct posix_acl *default_acl = NULL; |
556b8b16 | 207 | struct xfs_name name; |
1da177e4 LT |
208 | int error; |
209 | ||
210 | /* | |
211 | * Irix uses Missed'em'V split, but doesn't want to see | |
212 | * the upper 5 bits of (14bit) major. | |
213 | */ | |
517b5e8c CH |
214 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
215 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) | |
216 | return -EINVAL; | |
217 | rdev = sysv_encode_dev(rdev); | |
218 | } else { | |
219 | rdev = 0; | |
220 | } | |
1da177e4 | 221 | |
ef14f0c1 CH |
222 | if (IS_POSIXACL(dir)) { |
223 | default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
224 | if (IS_ERR(default_acl)) | |
225 | return -PTR_ERR(default_acl); | |
1da177e4 | 226 | |
e83f1eb6 CH |
227 | if (!default_acl) |
228 | mode &= ~current_umask(); | |
ef14f0c1 | 229 | } |
1da177e4 | 230 | |
517b5e8c CH |
231 | xfs_dentry_to_name(&name, dentry); |
232 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL); | |
db0bb7ba CH |
233 | if (unlikely(error)) |
234 | goto out_free_acl; | |
446ada4a | 235 | |
01651646 | 236 | inode = VFS_I(ip); |
979ebab1 CH |
237 | |
238 | error = xfs_init_security(inode, dir); | |
db0bb7ba CH |
239 | if (unlikely(error)) |
240 | goto out_cleanup_inode; | |
241 | ||
242 | if (default_acl) { | |
ef14f0c1 | 243 | error = -xfs_inherit_acl(inode, default_acl); |
db0bb7ba CH |
244 | if (unlikely(error)) |
245 | goto out_cleanup_inode; | |
ef14f0c1 | 246 | posix_acl_release(default_acl); |
1da177e4 LT |
247 | } |
248 | ||
1da177e4 | 249 | |
db0bb7ba | 250 | d_instantiate(dentry, inode); |
db0bb7ba CH |
251 | return -error; |
252 | ||
253 | out_cleanup_inode: | |
8f112e3b | 254 | xfs_cleanup_inode(dir, inode, dentry); |
db0bb7ba | 255 | out_free_acl: |
ef14f0c1 | 256 | posix_acl_release(default_acl); |
1da177e4 LT |
257 | return -error; |
258 | } | |
259 | ||
260 | STATIC int | |
416c6d5b | 261 | xfs_vn_create( |
1da177e4 LT |
262 | struct inode *dir, |
263 | struct dentry *dentry, | |
264 | int mode, | |
265 | struct nameidata *nd) | |
266 | { | |
416c6d5b | 267 | return xfs_vn_mknod(dir, dentry, mode, 0); |
1da177e4 LT |
268 | } |
269 | ||
270 | STATIC int | |
416c6d5b | 271 | xfs_vn_mkdir( |
1da177e4 LT |
272 | struct inode *dir, |
273 | struct dentry *dentry, | |
274 | int mode) | |
275 | { | |
416c6d5b | 276 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
1da177e4 LT |
277 | } |
278 | ||
279 | STATIC struct dentry * | |
416c6d5b | 280 | xfs_vn_lookup( |
1da177e4 LT |
281 | struct inode *dir, |
282 | struct dentry *dentry, | |
283 | struct nameidata *nd) | |
284 | { | |
ef1f5e7a | 285 | struct xfs_inode *cip; |
556b8b16 | 286 | struct xfs_name name; |
1da177e4 LT |
287 | int error; |
288 | ||
289 | if (dentry->d_name.len >= MAXNAMELEN) | |
290 | return ERR_PTR(-ENAMETOOLONG); | |
291 | ||
556b8b16 | 292 | xfs_dentry_to_name(&name, dentry); |
384f3ced | 293 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
67fcaa73 | 294 | if (unlikely(error)) { |
1da177e4 LT |
295 | if (unlikely(error != ENOENT)) |
296 | return ERR_PTR(-error); | |
297 | d_add(dentry, NULL); | |
298 | return NULL; | |
299 | } | |
300 | ||
01651646 | 301 | return d_splice_alias(VFS_I(cip), dentry); |
1da177e4 LT |
302 | } |
303 | ||
384f3ced BN |
304 | STATIC struct dentry * |
305 | xfs_vn_ci_lookup( | |
306 | struct inode *dir, | |
307 | struct dentry *dentry, | |
308 | struct nameidata *nd) | |
309 | { | |
310 | struct xfs_inode *ip; | |
311 | struct xfs_name xname; | |
312 | struct xfs_name ci_name; | |
313 | struct qstr dname; | |
314 | int error; | |
315 | ||
316 | if (dentry->d_name.len >= MAXNAMELEN) | |
317 | return ERR_PTR(-ENAMETOOLONG); | |
318 | ||
319 | xfs_dentry_to_name(&xname, dentry); | |
320 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); | |
321 | if (unlikely(error)) { | |
322 | if (unlikely(error != ENOENT)) | |
323 | return ERR_PTR(-error); | |
866d5dc9 BN |
324 | /* |
325 | * call d_add(dentry, NULL) here when d_drop_negative_children | |
326 | * is called in xfs_vn_mknod (ie. allow negative dentries | |
327 | * with CI filesystems). | |
328 | */ | |
384f3ced BN |
329 | return NULL; |
330 | } | |
331 | ||
332 | /* if exact match, just splice and exit */ | |
333 | if (!ci_name.name) | |
01651646 | 334 | return d_splice_alias(VFS_I(ip), dentry); |
384f3ced BN |
335 | |
336 | /* else case-insensitive match... */ | |
337 | dname.name = ci_name.name; | |
338 | dname.len = ci_name.len; | |
e45b590b | 339 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
384f3ced BN |
340 | kmem_free(ci_name.name); |
341 | return dentry; | |
342 | } | |
343 | ||
1da177e4 | 344 | STATIC int |
416c6d5b | 345 | xfs_vn_link( |
1da177e4 LT |
346 | struct dentry *old_dentry, |
347 | struct inode *dir, | |
348 | struct dentry *dentry) | |
349 | { | |
d9424b3c | 350 | struct inode *inode = old_dentry->d_inode; |
556b8b16 | 351 | struct xfs_name name; |
1da177e4 LT |
352 | int error; |
353 | ||
556b8b16 | 354 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 355 | |
556b8b16 | 356 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
d9424b3c | 357 | if (unlikely(error)) |
a3da7896 | 358 | return -error; |
a3da7896 | 359 | |
d9424b3c | 360 | atomic_inc(&inode->i_count); |
a3da7896 CH |
361 | d_instantiate(dentry, inode); |
362 | return 0; | |
1da177e4 LT |
363 | } |
364 | ||
365 | STATIC int | |
416c6d5b | 366 | xfs_vn_unlink( |
1da177e4 LT |
367 | struct inode *dir, |
368 | struct dentry *dentry) | |
369 | { | |
556b8b16 | 370 | struct xfs_name name; |
1da177e4 LT |
371 | int error; |
372 | ||
556b8b16 | 373 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 374 | |
e5700704 CH |
375 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
376 | if (error) | |
377 | return error; | |
378 | ||
379 | /* | |
380 | * With unlink, the VFS makes the dentry "negative": no inode, | |
381 | * but still hashed. This is incompatible with case-insensitive | |
382 | * mode, so invalidate (unhash) the dentry in CI-mode. | |
383 | */ | |
384 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) | |
385 | d_invalidate(dentry); | |
386 | return 0; | |
1da177e4 LT |
387 | } |
388 | ||
389 | STATIC int | |
416c6d5b | 390 | xfs_vn_symlink( |
1da177e4 LT |
391 | struct inode *dir, |
392 | struct dentry *dentry, | |
393 | const char *symname) | |
394 | { | |
3937be5b CH |
395 | struct inode *inode; |
396 | struct xfs_inode *cip = NULL; | |
556b8b16 | 397 | struct xfs_name name; |
1da177e4 | 398 | int error; |
3e5daf05 | 399 | mode_t mode; |
1da177e4 | 400 | |
3e5daf05 | 401 | mode = S_IFLNK | |
ce3b0f8d | 402 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
556b8b16 | 403 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 404 | |
556b8b16 | 405 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip, NULL); |
3937be5b CH |
406 | if (unlikely(error)) |
407 | goto out; | |
408 | ||
01651646 | 409 | inode = VFS_I(cip); |
3937be5b CH |
410 | |
411 | error = xfs_init_security(inode, dir); | |
412 | if (unlikely(error)) | |
413 | goto out_cleanup_inode; | |
414 | ||
415 | d_instantiate(dentry, inode); | |
3937be5b CH |
416 | return 0; |
417 | ||
418 | out_cleanup_inode: | |
8f112e3b | 419 | xfs_cleanup_inode(dir, inode, dentry); |
3937be5b | 420 | out: |
1da177e4 LT |
421 | return -error; |
422 | } | |
423 | ||
1da177e4 | 424 | STATIC int |
416c6d5b | 425 | xfs_vn_rename( |
1da177e4 LT |
426 | struct inode *odir, |
427 | struct dentry *odentry, | |
428 | struct inode *ndir, | |
429 | struct dentry *ndentry) | |
430 | { | |
431 | struct inode *new_inode = ndentry->d_inode; | |
556b8b16 BN |
432 | struct xfs_name oname; |
433 | struct xfs_name nname; | |
1da177e4 | 434 | |
556b8b16 BN |
435 | xfs_dentry_to_name(&oname, odentry); |
436 | xfs_dentry_to_name(&nname, ndentry); | |
437 | ||
e5700704 | 438 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
cfa853e4 CH |
439 | XFS_I(ndir), &nname, new_inode ? |
440 | XFS_I(new_inode) : NULL); | |
1da177e4 LT |
441 | } |
442 | ||
443 | /* | |
444 | * careful here - this function can get called recursively, so | |
445 | * we need to be very careful about how much stack we use. | |
446 | * uio is kmalloced for this reason... | |
447 | */ | |
008b150a | 448 | STATIC void * |
416c6d5b | 449 | xfs_vn_follow_link( |
1da177e4 LT |
450 | struct dentry *dentry, |
451 | struct nameidata *nd) | |
452 | { | |
1da177e4 | 453 | char *link; |
804c83c3 | 454 | int error = -ENOMEM; |
1da177e4 | 455 | |
f52720ca | 456 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
804c83c3 CH |
457 | if (!link) |
458 | goto out_err; | |
1da177e4 | 459 | |
739bfb2a | 460 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
804c83c3 CH |
461 | if (unlikely(error)) |
462 | goto out_kfree; | |
1da177e4 LT |
463 | |
464 | nd_set_link(nd, link); | |
008b150a | 465 | return NULL; |
804c83c3 CH |
466 | |
467 | out_kfree: | |
468 | kfree(link); | |
469 | out_err: | |
470 | nd_set_link(nd, ERR_PTR(error)); | |
471 | return NULL; | |
1da177e4 LT |
472 | } |
473 | ||
cde410a9 | 474 | STATIC void |
416c6d5b | 475 | xfs_vn_put_link( |
cde410a9 NS |
476 | struct dentry *dentry, |
477 | struct nameidata *nd, | |
478 | void *p) | |
1da177e4 | 479 | { |
cde410a9 NS |
480 | char *s = nd_get_link(nd); |
481 | ||
1da177e4 LT |
482 | if (!IS_ERR(s)) |
483 | kfree(s); | |
484 | } | |
485 | ||
1da177e4 | 486 | STATIC int |
416c6d5b | 487 | xfs_vn_permission( |
4576758d | 488 | struct inode *inode, |
e6305c43 | 489 | int mask) |
1da177e4 | 490 | { |
4576758d | 491 | return generic_permission(inode, mask, xfs_check_acl); |
1da177e4 | 492 | } |
1da177e4 LT |
493 | |
494 | STATIC int | |
416c6d5b | 495 | xfs_vn_getattr( |
c43f4087 CH |
496 | struct vfsmount *mnt, |
497 | struct dentry *dentry, | |
498 | struct kstat *stat) | |
1da177e4 | 499 | { |
c43f4087 CH |
500 | struct inode *inode = dentry->d_inode; |
501 | struct xfs_inode *ip = XFS_I(inode); | |
502 | struct xfs_mount *mp = ip->i_mount; | |
503 | ||
504 | xfs_itrace_entry(ip); | |
505 | ||
506 | if (XFS_FORCED_SHUTDOWN(mp)) | |
507 | return XFS_ERROR(EIO); | |
508 | ||
509 | stat->size = XFS_ISIZE(ip); | |
510 | stat->dev = inode->i_sb->s_dev; | |
511 | stat->mode = ip->i_d.di_mode; | |
512 | stat->nlink = ip->i_d.di_nlink; | |
513 | stat->uid = ip->i_d.di_uid; | |
514 | stat->gid = ip->i_d.di_gid; | |
515 | stat->ino = ip->i_ino; | |
c43f4087 CH |
516 | stat->atime = inode->i_atime; |
517 | stat->mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
518 | stat->mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
519 | stat->ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
520 | stat->ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
521 | stat->blocks = | |
522 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
523 | ||
524 | ||
525 | switch (inode->i_mode & S_IFMT) { | |
526 | case S_IFBLK: | |
527 | case S_IFCHR: | |
528 | stat->blksize = BLKDEV_IOSIZE; | |
529 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
530 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
531 | break; | |
532 | default: | |
71ddabb9 | 533 | if (XFS_IS_REALTIME_INODE(ip)) { |
c43f4087 CH |
534 | /* |
535 | * If the file blocks are being allocated from a | |
536 | * realtime volume, then return the inode's realtime | |
537 | * extent size or the realtime volume's extent size. | |
538 | */ | |
539 | stat->blksize = | |
540 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; | |
541 | } else | |
542 | stat->blksize = xfs_preferred_iosize(mp); | |
543 | stat->rdev = 0; | |
544 | break; | |
69e23b9a | 545 | } |
c43f4087 CH |
546 | |
547 | return 0; | |
1da177e4 LT |
548 | } |
549 | ||
550 | STATIC int | |
416c6d5b | 551 | xfs_vn_setattr( |
1da177e4 | 552 | struct dentry *dentry, |
0f285c8a | 553 | struct iattr *iattr) |
1da177e4 | 554 | { |
ea5a3dc8 | 555 | return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0); |
1da177e4 LT |
556 | } |
557 | ||
d87dd636 DC |
558 | /* |
559 | * block_truncate_page can return an error, but we can't propagate it | |
560 | * at all here. Leave a complaint + stack trace in the syslog because | |
561 | * this could be bad. If it is bad, we need to propagate the error further. | |
562 | */ | |
1da177e4 | 563 | STATIC void |
416c6d5b | 564 | xfs_vn_truncate( |
1da177e4 LT |
565 | struct inode *inode) |
566 | { | |
d87dd636 DC |
567 | int error; |
568 | error = block_truncate_page(inode->i_mapping, inode->i_size, | |
569 | xfs_get_blocks); | |
570 | WARN_ON(error); | |
1da177e4 LT |
571 | } |
572 | ||
3ed65264 DC |
573 | STATIC long |
574 | xfs_vn_fallocate( | |
575 | struct inode *inode, | |
576 | int mode, | |
577 | loff_t offset, | |
578 | loff_t len) | |
579 | { | |
580 | long error; | |
581 | loff_t new_size = 0; | |
582 | xfs_flock64_t bf; | |
583 | xfs_inode_t *ip = XFS_I(inode); | |
584 | ||
585 | /* preallocation on directories not yet supported */ | |
586 | error = -ENODEV; | |
587 | if (S_ISDIR(inode->i_mode)) | |
588 | goto out_error; | |
589 | ||
590 | bf.l_whence = 0; | |
591 | bf.l_start = offset; | |
592 | bf.l_len = len; | |
593 | ||
594 | xfs_ilock(ip, XFS_IOLOCK_EXCL); | |
595 | error = xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf, | |
ea5a3dc8 | 596 | 0, XFS_ATTR_NOLOCK); |
3ed65264 DC |
597 | if (!error && !(mode & FALLOC_FL_KEEP_SIZE) && |
598 | offset + len > i_size_read(inode)) | |
599 | new_size = offset + len; | |
600 | ||
601 | /* Change file size if needed */ | |
602 | if (new_size) { | |
0f285c8a | 603 | struct iattr iattr; |
3ed65264 | 604 | |
0f285c8a CH |
605 | iattr.ia_valid = ATTR_SIZE; |
606 | iattr.ia_size = new_size; | |
ea5a3dc8 | 607 | error = xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK); |
3ed65264 DC |
608 | } |
609 | ||
610 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); | |
611 | out_error: | |
612 | return error; | |
613 | } | |
1da177e4 | 614 | |
f35642e2 ES |
615 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
616 | ||
617 | /* | |
618 | * Call fiemap helper to fill in user data. | |
619 | * Returns positive errors to xfs_getbmap. | |
620 | */ | |
621 | STATIC int | |
622 | xfs_fiemap_format( | |
623 | void **arg, | |
624 | struct getbmapx *bmv, | |
625 | int *full) | |
626 | { | |
627 | int error; | |
628 | struct fiemap_extent_info *fieinfo = *arg; | |
629 | u32 fiemap_flags = 0; | |
630 | u64 logical, physical, length; | |
631 | ||
632 | /* Do nothing for a hole */ | |
633 | if (bmv->bmv_block == -1LL) | |
634 | return 0; | |
635 | ||
636 | logical = BBTOB(bmv->bmv_offset); | |
637 | physical = BBTOB(bmv->bmv_block); | |
638 | length = BBTOB(bmv->bmv_length); | |
639 | ||
640 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) | |
641 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; | |
642 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { | |
643 | fiemap_flags |= FIEMAP_EXTENT_DELALLOC; | |
644 | physical = 0; /* no block yet */ | |
645 | } | |
646 | if (bmv->bmv_oflags & BMV_OF_LAST) | |
647 | fiemap_flags |= FIEMAP_EXTENT_LAST; | |
648 | ||
649 | error = fiemap_fill_next_extent(fieinfo, logical, physical, | |
650 | length, fiemap_flags); | |
651 | if (error > 0) { | |
652 | error = 0; | |
653 | *full = 1; /* user array now full */ | |
654 | } | |
655 | ||
656 | return -error; | |
657 | } | |
658 | ||
659 | STATIC int | |
660 | xfs_vn_fiemap( | |
661 | struct inode *inode, | |
662 | struct fiemap_extent_info *fieinfo, | |
663 | u64 start, | |
664 | u64 length) | |
665 | { | |
666 | xfs_inode_t *ip = XFS_I(inode); | |
667 | struct getbmapx bm; | |
668 | int error; | |
669 | ||
670 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); | |
671 | if (error) | |
672 | return error; | |
673 | ||
674 | /* Set up bmap header for xfs internal routine */ | |
675 | bm.bmv_offset = BTOBB(start); | |
676 | /* Special case for whole file */ | |
677 | if (length == FIEMAP_MAX_OFFSET) | |
678 | bm.bmv_length = -1LL; | |
679 | else | |
680 | bm.bmv_length = BTOBB(length); | |
681 | ||
97db39a1 ES |
682 | /* We add one because in getbmap world count includes the header */ |
683 | bm.bmv_count = fieinfo->fi_extents_max + 1; | |
f35642e2 ES |
684 | bm.bmv_iflags = BMV_IF_PREALLOC; |
685 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) | |
686 | bm.bmv_iflags |= BMV_IF_ATTRFORK; | |
687 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) | |
688 | bm.bmv_iflags |= BMV_IF_DELALLOC; | |
689 | ||
690 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); | |
691 | if (error) | |
692 | return -error; | |
693 | ||
694 | return 0; | |
695 | } | |
696 | ||
41be8bed | 697 | static const struct inode_operations xfs_inode_operations = { |
416c6d5b NS |
698 | .permission = xfs_vn_permission, |
699 | .truncate = xfs_vn_truncate, | |
700 | .getattr = xfs_vn_getattr, | |
701 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
702 | .setxattr = generic_setxattr, |
703 | .getxattr = generic_getxattr, | |
704 | .removexattr = generic_removexattr, | |
416c6d5b | 705 | .listxattr = xfs_vn_listxattr, |
3ed65264 | 706 | .fallocate = xfs_vn_fallocate, |
f35642e2 | 707 | .fiemap = xfs_vn_fiemap, |
1da177e4 LT |
708 | }; |
709 | ||
41be8bed | 710 | static const struct inode_operations xfs_dir_inode_operations = { |
416c6d5b NS |
711 | .create = xfs_vn_create, |
712 | .lookup = xfs_vn_lookup, | |
713 | .link = xfs_vn_link, | |
714 | .unlink = xfs_vn_unlink, | |
715 | .symlink = xfs_vn_symlink, | |
716 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
717 | /* |
718 | * Yes, XFS uses the same method for rmdir and unlink. | |
719 | * | |
720 | * There are some subtile differences deeper in the code, | |
721 | * but we use S_ISDIR to check for those. | |
722 | */ | |
723 | .rmdir = xfs_vn_unlink, | |
416c6d5b NS |
724 | .mknod = xfs_vn_mknod, |
725 | .rename = xfs_vn_rename, | |
726 | .permission = xfs_vn_permission, | |
727 | .getattr = xfs_vn_getattr, | |
728 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
729 | .setxattr = generic_setxattr, |
730 | .getxattr = generic_getxattr, | |
731 | .removexattr = generic_removexattr, | |
416c6d5b | 732 | .listxattr = xfs_vn_listxattr, |
1da177e4 LT |
733 | }; |
734 | ||
41be8bed | 735 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
384f3ced BN |
736 | .create = xfs_vn_create, |
737 | .lookup = xfs_vn_ci_lookup, | |
738 | .link = xfs_vn_link, | |
739 | .unlink = xfs_vn_unlink, | |
740 | .symlink = xfs_vn_symlink, | |
741 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
742 | /* |
743 | * Yes, XFS uses the same method for rmdir and unlink. | |
744 | * | |
745 | * There are some subtile differences deeper in the code, | |
746 | * but we use S_ISDIR to check for those. | |
747 | */ | |
748 | .rmdir = xfs_vn_unlink, | |
384f3ced BN |
749 | .mknod = xfs_vn_mknod, |
750 | .rename = xfs_vn_rename, | |
751 | .permission = xfs_vn_permission, | |
752 | .getattr = xfs_vn_getattr, | |
753 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
754 | .setxattr = generic_setxattr, |
755 | .getxattr = generic_getxattr, | |
756 | .removexattr = generic_removexattr, | |
384f3ced | 757 | .listxattr = xfs_vn_listxattr, |
384f3ced BN |
758 | }; |
759 | ||
41be8bed | 760 | static const struct inode_operations xfs_symlink_inode_operations = { |
1da177e4 | 761 | .readlink = generic_readlink, |
416c6d5b NS |
762 | .follow_link = xfs_vn_follow_link, |
763 | .put_link = xfs_vn_put_link, | |
764 | .permission = xfs_vn_permission, | |
765 | .getattr = xfs_vn_getattr, | |
766 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
767 | .setxattr = generic_setxattr, |
768 | .getxattr = generic_getxattr, | |
769 | .removexattr = generic_removexattr, | |
416c6d5b | 770 | .listxattr = xfs_vn_listxattr, |
1da177e4 | 771 | }; |
41be8bed CH |
772 | |
773 | STATIC void | |
774 | xfs_diflags_to_iflags( | |
775 | struct inode *inode, | |
776 | struct xfs_inode *ip) | |
777 | { | |
778 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
779 | inode->i_flags |= S_IMMUTABLE; | |
780 | else | |
781 | inode->i_flags &= ~S_IMMUTABLE; | |
782 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
783 | inode->i_flags |= S_APPEND; | |
784 | else | |
785 | inode->i_flags &= ~S_APPEND; | |
786 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
787 | inode->i_flags |= S_SYNC; | |
788 | else | |
789 | inode->i_flags &= ~S_SYNC; | |
790 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
791 | inode->i_flags |= S_NOATIME; | |
792 | else | |
793 | inode->i_flags &= ~S_NOATIME; | |
794 | } | |
795 | ||
796 | /* | |
797 | * Initialize the Linux inode, set up the operation vectors and | |
798 | * unlock the inode. | |
799 | * | |
800 | * When reading existing inodes from disk this is called directly | |
801 | * from xfs_iget, when creating a new inode it is called from | |
802 | * xfs_ialloc after setting up the inode. | |
bf904248 DC |
803 | * |
804 | * We are always called with an uninitialised linux inode here. | |
805 | * We need to initialise the necessary fields and take a reference | |
806 | * on it. | |
41be8bed CH |
807 | */ |
808 | void | |
809 | xfs_setup_inode( | |
810 | struct xfs_inode *ip) | |
811 | { | |
bf904248 DC |
812 | struct inode *inode = &ip->i_vnode; |
813 | ||
814 | inode->i_ino = ip->i_ino; | |
815 | inode->i_state = I_NEW|I_LOCK; | |
816 | inode_add_to_lists(ip->i_mount->m_super, inode); | |
41be8bed CH |
817 | |
818 | inode->i_mode = ip->i_d.di_mode; | |
819 | inode->i_nlink = ip->i_d.di_nlink; | |
820 | inode->i_uid = ip->i_d.di_uid; | |
821 | inode->i_gid = ip->i_d.di_gid; | |
822 | ||
823 | switch (inode->i_mode & S_IFMT) { | |
824 | case S_IFBLK: | |
825 | case S_IFCHR: | |
826 | inode->i_rdev = | |
827 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
828 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
829 | break; | |
830 | default: | |
831 | inode->i_rdev = 0; | |
832 | break; | |
833 | } | |
834 | ||
835 | inode->i_generation = ip->i_d.di_gen; | |
836 | i_size_write(inode, ip->i_d.di_size); | |
837 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
838 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
839 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
840 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
841 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
842 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
843 | xfs_diflags_to_iflags(inode, ip); | |
41be8bed CH |
844 | |
845 | switch (inode->i_mode & S_IFMT) { | |
846 | case S_IFREG: | |
847 | inode->i_op = &xfs_inode_operations; | |
848 | inode->i_fop = &xfs_file_operations; | |
849 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
850 | break; | |
851 | case S_IFDIR: | |
852 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) | |
853 | inode->i_op = &xfs_dir_ci_inode_operations; | |
854 | else | |
855 | inode->i_op = &xfs_dir_inode_operations; | |
856 | inode->i_fop = &xfs_dir_file_operations; | |
857 | break; | |
858 | case S_IFLNK: | |
859 | inode->i_op = &xfs_symlink_inode_operations; | |
860 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) | |
861 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
862 | break; | |
863 | default: | |
864 | inode->i_op = &xfs_inode_operations; | |
865 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
866 | break; | |
867 | } | |
868 | ||
869 | xfs_iflags_clear(ip, XFS_INEW); | |
870 | barrier(); | |
871 | ||
872 | unlock_new_inode(inode); | |
873 | } |