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" |
0b1b213f | 50 | #include "xfs_trace.h" |
1da177e4 | 51 | |
16f7e0fe | 52 | #include <linux/capability.h> |
1da177e4 LT |
53 | #include <linux/xattr.h> |
54 | #include <linux/namei.h> | |
ef14f0c1 | 55 | #include <linux/posix_acl.h> |
446ada4a | 56 | #include <linux/security.h> |
3ed65264 | 57 | #include <linux/falloc.h> |
f35642e2 | 58 | #include <linux/fiemap.h> |
1da177e4 | 59 | |
42fe2b1f | 60 | /* |
f9581b14 CH |
61 | * Bring the timestamps in the XFS inode uptodate. |
62 | * | |
63 | * Used before writing the inode to disk. | |
42fe2b1f CH |
64 | */ |
65 | void | |
f9581b14 | 66 | xfs_synchronize_times( |
42fe2b1f CH |
67 | xfs_inode_t *ip) |
68 | { | |
01651646 | 69 | struct inode *inode = VFS_I(ip); |
42fe2b1f | 70 | |
f9581b14 CH |
71 | ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; |
72 | ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; | |
73 | ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec; | |
74 | ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec; | |
75 | ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec; | |
76 | ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec; | |
42fe2b1f CH |
77 | } |
78 | ||
5d51eff4 | 79 | /* |
bf904248 | 80 | * If the linux inode is valid, mark it dirty. |
5d51eff4 DC |
81 | * Used when commiting a dirty inode into a transaction so that |
82 | * the inode will get written back by the linux code | |
83 | */ | |
84 | void | |
85 | xfs_mark_inode_dirty_sync( | |
86 | xfs_inode_t *ip) | |
87 | { | |
01651646 | 88 | struct inode *inode = VFS_I(ip); |
5d51eff4 | 89 | |
bf904248 | 90 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) |
af048193 | 91 | mark_inode_dirty_sync(inode); |
5d51eff4 DC |
92 | } |
93 | ||
4aeb664c NS |
94 | /* |
95 | * Change the requested timestamp in the given inode. | |
96 | * We don't lock across timestamp updates, and we don't log them but | |
97 | * we do record the fact that there is dirty information in core. | |
4aeb664c NS |
98 | */ |
99 | void | |
100 | xfs_ichgtime( | |
101 | xfs_inode_t *ip, | |
102 | int flags) | |
103 | { | |
e4f75291 | 104 | struct inode *inode = VFS_I(ip); |
4aeb664c | 105 | timespec_t tv; |
8e5975c8 | 106 | int sync_it = 0; |
4aeb664c | 107 | |
8e5975c8 CH |
108 | tv = current_fs_time(inode->i_sb); |
109 | ||
110 | if ((flags & XFS_ICHGTIME_MOD) && | |
111 | !timespec_equal(&inode->i_mtime, &tv)) { | |
4aeb664c | 112 | inode->i_mtime = tv; |
8e5975c8 | 113 | sync_it = 1; |
4aeb664c | 114 | } |
8e5975c8 CH |
115 | if ((flags & XFS_ICHGTIME_CHG) && |
116 | !timespec_equal(&inode->i_ctime, &tv)) { | |
4aeb664c | 117 | inode->i_ctime = tv; |
8e5975c8 | 118 | sync_it = 1; |
4aeb664c NS |
119 | } |
120 | ||
121 | /* | |
f9581b14 CH |
122 | * Update complete - now make sure everyone knows that the inode |
123 | * is dirty. | |
4aeb664c | 124 | */ |
f9581b14 | 125 | if (sync_it) |
94b97e39 | 126 | xfs_mark_inode_dirty_sync(ip); |
4aeb664c NS |
127 | } |
128 | ||
446ada4a NS |
129 | /* |
130 | * Hook in SELinux. This is not quite correct yet, what we really need | |
131 | * here (as we do for default ACLs) is a mechanism by which creation of | |
132 | * these attrs can be journalled at inode creation time (along with the | |
133 | * inode, of course, such that log replay can't cause these to be lost). | |
134 | */ | |
135 | STATIC int | |
416c6d5b | 136 | xfs_init_security( |
af048193 | 137 | struct inode *inode, |
446ada4a NS |
138 | struct inode *dir) |
139 | { | |
af048193 | 140 | struct xfs_inode *ip = XFS_I(inode); |
446ada4a NS |
141 | size_t length; |
142 | void *value; | |
a9273ca5 | 143 | unsigned char *name; |
446ada4a NS |
144 | int error; |
145 | ||
a9273ca5 | 146 | error = security_inode_init_security(inode, dir, (char **)&name, |
af048193 | 147 | &value, &length); |
446ada4a NS |
148 | if (error) { |
149 | if (error == -EOPNOTSUPP) | |
150 | return 0; | |
151 | return -error; | |
152 | } | |
153 | ||
af048193 | 154 | error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); |
446ada4a NS |
155 | |
156 | kfree(name); | |
157 | kfree(value); | |
158 | return error; | |
159 | } | |
160 | ||
556b8b16 BN |
161 | static void |
162 | xfs_dentry_to_name( | |
163 | struct xfs_name *namep, | |
164 | struct dentry *dentry) | |
165 | { | |
166 | namep->name = dentry->d_name.name; | |
167 | namep->len = dentry->d_name.len; | |
168 | } | |
169 | ||
7989cb8e | 170 | STATIC void |
416c6d5b | 171 | xfs_cleanup_inode( |
739bfb2a | 172 | struct inode *dir, |
af048193 | 173 | struct inode *inode, |
8f112e3b | 174 | struct dentry *dentry) |
3a69c7dc | 175 | { |
556b8b16 | 176 | struct xfs_name teardown; |
3a69c7dc YL |
177 | |
178 | /* Oh, the horror. | |
220b5284 | 179 | * If we can't add the ACL or we fail in |
416c6d5b | 180 | * xfs_init_security we must back out. |
3a69c7dc YL |
181 | * ENOSPC can hit here, among other things. |
182 | */ | |
556b8b16 | 183 | xfs_dentry_to_name(&teardown, dentry); |
3a69c7dc | 184 | |
8f112e3b | 185 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
af048193 | 186 | iput(inode); |
3a69c7dc YL |
187 | } |
188 | ||
1da177e4 | 189 | STATIC int |
416c6d5b | 190 | xfs_vn_mknod( |
1da177e4 LT |
191 | struct inode *dir, |
192 | struct dentry *dentry, | |
193 | int mode, | |
194 | dev_t rdev) | |
195 | { | |
db0bb7ba | 196 | struct inode *inode; |
979ebab1 | 197 | struct xfs_inode *ip = NULL; |
ef14f0c1 | 198 | struct posix_acl *default_acl = NULL; |
556b8b16 | 199 | struct xfs_name name; |
1da177e4 LT |
200 | int error; |
201 | ||
202 | /* | |
203 | * Irix uses Missed'em'V split, but doesn't want to see | |
204 | * the upper 5 bits of (14bit) major. | |
205 | */ | |
517b5e8c CH |
206 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
207 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) | |
208 | return -EINVAL; | |
209 | rdev = sysv_encode_dev(rdev); | |
210 | } else { | |
211 | rdev = 0; | |
212 | } | |
1da177e4 | 213 | |
ef14f0c1 CH |
214 | if (IS_POSIXACL(dir)) { |
215 | default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
216 | if (IS_ERR(default_acl)) | |
217 | return -PTR_ERR(default_acl); | |
1da177e4 | 218 | |
e83f1eb6 CH |
219 | if (!default_acl) |
220 | mode &= ~current_umask(); | |
ef14f0c1 | 221 | } |
1da177e4 | 222 | |
517b5e8c CH |
223 | xfs_dentry_to_name(&name, dentry); |
224 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL); | |
db0bb7ba CH |
225 | if (unlikely(error)) |
226 | goto out_free_acl; | |
446ada4a | 227 | |
01651646 | 228 | inode = VFS_I(ip); |
979ebab1 CH |
229 | |
230 | error = xfs_init_security(inode, dir); | |
db0bb7ba CH |
231 | if (unlikely(error)) |
232 | goto out_cleanup_inode; | |
233 | ||
234 | if (default_acl) { | |
ef14f0c1 | 235 | error = -xfs_inherit_acl(inode, default_acl); |
db0bb7ba CH |
236 | if (unlikely(error)) |
237 | goto out_cleanup_inode; | |
ef14f0c1 | 238 | posix_acl_release(default_acl); |
1da177e4 LT |
239 | } |
240 | ||
1da177e4 | 241 | |
db0bb7ba | 242 | d_instantiate(dentry, inode); |
db0bb7ba CH |
243 | return -error; |
244 | ||
245 | out_cleanup_inode: | |
8f112e3b | 246 | xfs_cleanup_inode(dir, inode, dentry); |
db0bb7ba | 247 | out_free_acl: |
ef14f0c1 | 248 | posix_acl_release(default_acl); |
1da177e4 LT |
249 | return -error; |
250 | } | |
251 | ||
252 | STATIC int | |
416c6d5b | 253 | xfs_vn_create( |
1da177e4 LT |
254 | struct inode *dir, |
255 | struct dentry *dentry, | |
256 | int mode, | |
257 | struct nameidata *nd) | |
258 | { | |
416c6d5b | 259 | return xfs_vn_mknod(dir, dentry, mode, 0); |
1da177e4 LT |
260 | } |
261 | ||
262 | STATIC int | |
416c6d5b | 263 | xfs_vn_mkdir( |
1da177e4 LT |
264 | struct inode *dir, |
265 | struct dentry *dentry, | |
266 | int mode) | |
267 | { | |
416c6d5b | 268 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
1da177e4 LT |
269 | } |
270 | ||
271 | STATIC struct dentry * | |
416c6d5b | 272 | xfs_vn_lookup( |
1da177e4 LT |
273 | struct inode *dir, |
274 | struct dentry *dentry, | |
275 | struct nameidata *nd) | |
276 | { | |
ef1f5e7a | 277 | struct xfs_inode *cip; |
556b8b16 | 278 | struct xfs_name name; |
1da177e4 LT |
279 | int error; |
280 | ||
281 | if (dentry->d_name.len >= MAXNAMELEN) | |
282 | return ERR_PTR(-ENAMETOOLONG); | |
283 | ||
556b8b16 | 284 | xfs_dentry_to_name(&name, dentry); |
384f3ced | 285 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
67fcaa73 | 286 | if (unlikely(error)) { |
1da177e4 LT |
287 | if (unlikely(error != ENOENT)) |
288 | return ERR_PTR(-error); | |
289 | d_add(dentry, NULL); | |
290 | return NULL; | |
291 | } | |
292 | ||
01651646 | 293 | return d_splice_alias(VFS_I(cip), dentry); |
1da177e4 LT |
294 | } |
295 | ||
384f3ced BN |
296 | STATIC struct dentry * |
297 | xfs_vn_ci_lookup( | |
298 | struct inode *dir, | |
299 | struct dentry *dentry, | |
300 | struct nameidata *nd) | |
301 | { | |
302 | struct xfs_inode *ip; | |
303 | struct xfs_name xname; | |
304 | struct xfs_name ci_name; | |
305 | struct qstr dname; | |
306 | int error; | |
307 | ||
308 | if (dentry->d_name.len >= MAXNAMELEN) | |
309 | return ERR_PTR(-ENAMETOOLONG); | |
310 | ||
311 | xfs_dentry_to_name(&xname, dentry); | |
312 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); | |
313 | if (unlikely(error)) { | |
314 | if (unlikely(error != ENOENT)) | |
315 | return ERR_PTR(-error); | |
866d5dc9 BN |
316 | /* |
317 | * call d_add(dentry, NULL) here when d_drop_negative_children | |
318 | * is called in xfs_vn_mknod (ie. allow negative dentries | |
319 | * with CI filesystems). | |
320 | */ | |
384f3ced BN |
321 | return NULL; |
322 | } | |
323 | ||
324 | /* if exact match, just splice and exit */ | |
325 | if (!ci_name.name) | |
01651646 | 326 | return d_splice_alias(VFS_I(ip), dentry); |
384f3ced BN |
327 | |
328 | /* else case-insensitive match... */ | |
329 | dname.name = ci_name.name; | |
330 | dname.len = ci_name.len; | |
e45b590b | 331 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
384f3ced BN |
332 | kmem_free(ci_name.name); |
333 | return dentry; | |
334 | } | |
335 | ||
1da177e4 | 336 | STATIC int |
416c6d5b | 337 | xfs_vn_link( |
1da177e4 LT |
338 | struct dentry *old_dentry, |
339 | struct inode *dir, | |
340 | struct dentry *dentry) | |
341 | { | |
d9424b3c | 342 | struct inode *inode = old_dentry->d_inode; |
556b8b16 | 343 | struct xfs_name name; |
1da177e4 LT |
344 | int error; |
345 | ||
556b8b16 | 346 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 347 | |
556b8b16 | 348 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
d9424b3c | 349 | if (unlikely(error)) |
a3da7896 | 350 | return -error; |
a3da7896 | 351 | |
d9424b3c | 352 | atomic_inc(&inode->i_count); |
a3da7896 CH |
353 | d_instantiate(dentry, inode); |
354 | return 0; | |
1da177e4 LT |
355 | } |
356 | ||
357 | STATIC int | |
416c6d5b | 358 | xfs_vn_unlink( |
1da177e4 LT |
359 | struct inode *dir, |
360 | struct dentry *dentry) | |
361 | { | |
556b8b16 | 362 | struct xfs_name name; |
1da177e4 LT |
363 | int error; |
364 | ||
556b8b16 | 365 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 366 | |
e5700704 CH |
367 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
368 | if (error) | |
369 | return error; | |
370 | ||
371 | /* | |
372 | * With unlink, the VFS makes the dentry "negative": no inode, | |
373 | * but still hashed. This is incompatible with case-insensitive | |
374 | * mode, so invalidate (unhash) the dentry in CI-mode. | |
375 | */ | |
376 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) | |
377 | d_invalidate(dentry); | |
378 | return 0; | |
1da177e4 LT |
379 | } |
380 | ||
381 | STATIC int | |
416c6d5b | 382 | xfs_vn_symlink( |
1da177e4 LT |
383 | struct inode *dir, |
384 | struct dentry *dentry, | |
385 | const char *symname) | |
386 | { | |
3937be5b CH |
387 | struct inode *inode; |
388 | struct xfs_inode *cip = NULL; | |
556b8b16 | 389 | struct xfs_name name; |
1da177e4 | 390 | int error; |
3e5daf05 | 391 | mode_t mode; |
1da177e4 | 392 | |
3e5daf05 | 393 | mode = S_IFLNK | |
ce3b0f8d | 394 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
556b8b16 | 395 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 396 | |
556b8b16 | 397 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip, NULL); |
3937be5b CH |
398 | if (unlikely(error)) |
399 | goto out; | |
400 | ||
01651646 | 401 | inode = VFS_I(cip); |
3937be5b CH |
402 | |
403 | error = xfs_init_security(inode, dir); | |
404 | if (unlikely(error)) | |
405 | goto out_cleanup_inode; | |
406 | ||
407 | d_instantiate(dentry, inode); | |
3937be5b CH |
408 | return 0; |
409 | ||
410 | out_cleanup_inode: | |
8f112e3b | 411 | xfs_cleanup_inode(dir, inode, dentry); |
3937be5b | 412 | out: |
1da177e4 LT |
413 | return -error; |
414 | } | |
415 | ||
1da177e4 | 416 | STATIC int |
416c6d5b | 417 | xfs_vn_rename( |
1da177e4 LT |
418 | struct inode *odir, |
419 | struct dentry *odentry, | |
420 | struct inode *ndir, | |
421 | struct dentry *ndentry) | |
422 | { | |
423 | struct inode *new_inode = ndentry->d_inode; | |
556b8b16 BN |
424 | struct xfs_name oname; |
425 | struct xfs_name nname; | |
1da177e4 | 426 | |
556b8b16 BN |
427 | xfs_dentry_to_name(&oname, odentry); |
428 | xfs_dentry_to_name(&nname, ndentry); | |
429 | ||
e5700704 | 430 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
cfa853e4 CH |
431 | XFS_I(ndir), &nname, new_inode ? |
432 | XFS_I(new_inode) : NULL); | |
1da177e4 LT |
433 | } |
434 | ||
435 | /* | |
436 | * careful here - this function can get called recursively, so | |
437 | * we need to be very careful about how much stack we use. | |
438 | * uio is kmalloced for this reason... | |
439 | */ | |
008b150a | 440 | STATIC void * |
416c6d5b | 441 | xfs_vn_follow_link( |
1da177e4 LT |
442 | struct dentry *dentry, |
443 | struct nameidata *nd) | |
444 | { | |
1da177e4 | 445 | char *link; |
804c83c3 | 446 | int error = -ENOMEM; |
1da177e4 | 447 | |
f52720ca | 448 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
804c83c3 CH |
449 | if (!link) |
450 | goto out_err; | |
1da177e4 | 451 | |
739bfb2a | 452 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
804c83c3 CH |
453 | if (unlikely(error)) |
454 | goto out_kfree; | |
1da177e4 LT |
455 | |
456 | nd_set_link(nd, link); | |
008b150a | 457 | return NULL; |
804c83c3 CH |
458 | |
459 | out_kfree: | |
460 | kfree(link); | |
461 | out_err: | |
462 | nd_set_link(nd, ERR_PTR(error)); | |
463 | return NULL; | |
1da177e4 LT |
464 | } |
465 | ||
cde410a9 | 466 | STATIC void |
416c6d5b | 467 | xfs_vn_put_link( |
cde410a9 NS |
468 | struct dentry *dentry, |
469 | struct nameidata *nd, | |
470 | void *p) | |
1da177e4 | 471 | { |
cde410a9 NS |
472 | char *s = nd_get_link(nd); |
473 | ||
1da177e4 LT |
474 | if (!IS_ERR(s)) |
475 | kfree(s); | |
476 | } | |
477 | ||
1da177e4 | 478 | STATIC int |
416c6d5b | 479 | xfs_vn_getattr( |
c43f4087 CH |
480 | struct vfsmount *mnt, |
481 | struct dentry *dentry, | |
482 | struct kstat *stat) | |
1da177e4 | 483 | { |
c43f4087 CH |
484 | struct inode *inode = dentry->d_inode; |
485 | struct xfs_inode *ip = XFS_I(inode); | |
486 | struct xfs_mount *mp = ip->i_mount; | |
487 | ||
488 | xfs_itrace_entry(ip); | |
489 | ||
490 | if (XFS_FORCED_SHUTDOWN(mp)) | |
491 | return XFS_ERROR(EIO); | |
492 | ||
493 | stat->size = XFS_ISIZE(ip); | |
494 | stat->dev = inode->i_sb->s_dev; | |
495 | stat->mode = ip->i_d.di_mode; | |
496 | stat->nlink = ip->i_d.di_nlink; | |
497 | stat->uid = ip->i_d.di_uid; | |
498 | stat->gid = ip->i_d.di_gid; | |
499 | stat->ino = ip->i_ino; | |
c43f4087 | 500 | stat->atime = inode->i_atime; |
f9581b14 CH |
501 | stat->mtime = inode->i_mtime; |
502 | stat->ctime = inode->i_ctime; | |
c43f4087 CH |
503 | stat->blocks = |
504 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
505 | ||
506 | ||
507 | switch (inode->i_mode & S_IFMT) { | |
508 | case S_IFBLK: | |
509 | case S_IFCHR: | |
510 | stat->blksize = BLKDEV_IOSIZE; | |
511 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
512 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
513 | break; | |
514 | default: | |
71ddabb9 | 515 | if (XFS_IS_REALTIME_INODE(ip)) { |
c43f4087 CH |
516 | /* |
517 | * If the file blocks are being allocated from a | |
518 | * realtime volume, then return the inode's realtime | |
519 | * extent size or the realtime volume's extent size. | |
520 | */ | |
521 | stat->blksize = | |
522 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; | |
523 | } else | |
524 | stat->blksize = xfs_preferred_iosize(mp); | |
525 | stat->rdev = 0; | |
526 | break; | |
69e23b9a | 527 | } |
c43f4087 CH |
528 | |
529 | return 0; | |
1da177e4 LT |
530 | } |
531 | ||
532 | STATIC int | |
416c6d5b | 533 | xfs_vn_setattr( |
1da177e4 | 534 | struct dentry *dentry, |
0f285c8a | 535 | struct iattr *iattr) |
1da177e4 | 536 | { |
ea5a3dc8 | 537 | return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0); |
1da177e4 LT |
538 | } |
539 | ||
d87dd636 DC |
540 | /* |
541 | * block_truncate_page can return an error, but we can't propagate it | |
542 | * at all here. Leave a complaint + stack trace in the syslog because | |
543 | * this could be bad. If it is bad, we need to propagate the error further. | |
544 | */ | |
1da177e4 | 545 | STATIC void |
416c6d5b | 546 | xfs_vn_truncate( |
1da177e4 LT |
547 | struct inode *inode) |
548 | { | |
d87dd636 DC |
549 | int error; |
550 | error = block_truncate_page(inode->i_mapping, inode->i_size, | |
551 | xfs_get_blocks); | |
552 | WARN_ON(error); | |
1da177e4 LT |
553 | } |
554 | ||
3ed65264 DC |
555 | STATIC long |
556 | xfs_vn_fallocate( | |
557 | struct inode *inode, | |
558 | int mode, | |
559 | loff_t offset, | |
560 | loff_t len) | |
561 | { | |
562 | long error; | |
563 | loff_t new_size = 0; | |
564 | xfs_flock64_t bf; | |
565 | xfs_inode_t *ip = XFS_I(inode); | |
566 | ||
567 | /* preallocation on directories not yet supported */ | |
568 | error = -ENODEV; | |
569 | if (S_ISDIR(inode->i_mode)) | |
570 | goto out_error; | |
571 | ||
572 | bf.l_whence = 0; | |
573 | bf.l_start = offset; | |
574 | bf.l_len = len; | |
575 | ||
576 | xfs_ilock(ip, XFS_IOLOCK_EXCL); | |
44a743f6 JG |
577 | error = -xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf, |
578 | 0, XFS_ATTR_NOLOCK); | |
3ed65264 DC |
579 | if (!error && !(mode & FALLOC_FL_KEEP_SIZE) && |
580 | offset + len > i_size_read(inode)) | |
581 | new_size = offset + len; | |
582 | ||
583 | /* Change file size if needed */ | |
584 | if (new_size) { | |
0f285c8a | 585 | struct iattr iattr; |
3ed65264 | 586 | |
0f285c8a CH |
587 | iattr.ia_valid = ATTR_SIZE; |
588 | iattr.ia_size = new_size; | |
44a743f6 | 589 | error = -xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK); |
3ed65264 DC |
590 | } |
591 | ||
592 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); | |
593 | out_error: | |
594 | return error; | |
595 | } | |
1da177e4 | 596 | |
f35642e2 ES |
597 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
598 | ||
599 | /* | |
600 | * Call fiemap helper to fill in user data. | |
601 | * Returns positive errors to xfs_getbmap. | |
602 | */ | |
603 | STATIC int | |
604 | xfs_fiemap_format( | |
605 | void **arg, | |
606 | struct getbmapx *bmv, | |
607 | int *full) | |
608 | { | |
609 | int error; | |
610 | struct fiemap_extent_info *fieinfo = *arg; | |
611 | u32 fiemap_flags = 0; | |
612 | u64 logical, physical, length; | |
613 | ||
614 | /* Do nothing for a hole */ | |
615 | if (bmv->bmv_block == -1LL) | |
616 | return 0; | |
617 | ||
618 | logical = BBTOB(bmv->bmv_offset); | |
619 | physical = BBTOB(bmv->bmv_block); | |
620 | length = BBTOB(bmv->bmv_length); | |
621 | ||
622 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) | |
623 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; | |
624 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { | |
625 | fiemap_flags |= FIEMAP_EXTENT_DELALLOC; | |
626 | physical = 0; /* no block yet */ | |
627 | } | |
628 | if (bmv->bmv_oflags & BMV_OF_LAST) | |
629 | fiemap_flags |= FIEMAP_EXTENT_LAST; | |
630 | ||
631 | error = fiemap_fill_next_extent(fieinfo, logical, physical, | |
632 | length, fiemap_flags); | |
633 | if (error > 0) { | |
634 | error = 0; | |
635 | *full = 1; /* user array now full */ | |
636 | } | |
637 | ||
638 | return -error; | |
639 | } | |
640 | ||
641 | STATIC int | |
642 | xfs_vn_fiemap( | |
643 | struct inode *inode, | |
644 | struct fiemap_extent_info *fieinfo, | |
645 | u64 start, | |
646 | u64 length) | |
647 | { | |
648 | xfs_inode_t *ip = XFS_I(inode); | |
649 | struct getbmapx bm; | |
650 | int error; | |
651 | ||
652 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); | |
653 | if (error) | |
654 | return error; | |
655 | ||
656 | /* Set up bmap header for xfs internal routine */ | |
657 | bm.bmv_offset = BTOBB(start); | |
658 | /* Special case for whole file */ | |
659 | if (length == FIEMAP_MAX_OFFSET) | |
660 | bm.bmv_length = -1LL; | |
661 | else | |
662 | bm.bmv_length = BTOBB(length); | |
663 | ||
97db39a1 ES |
664 | /* We add one because in getbmap world count includes the header */ |
665 | bm.bmv_count = fieinfo->fi_extents_max + 1; | |
f35642e2 ES |
666 | bm.bmv_iflags = BMV_IF_PREALLOC; |
667 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) | |
668 | bm.bmv_iflags |= BMV_IF_ATTRFORK; | |
669 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) | |
670 | bm.bmv_iflags |= BMV_IF_DELALLOC; | |
671 | ||
672 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); | |
673 | if (error) | |
674 | return -error; | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
41be8bed | 679 | static const struct inode_operations xfs_inode_operations = { |
18f4c644 | 680 | .check_acl = xfs_check_acl, |
416c6d5b NS |
681 | .truncate = xfs_vn_truncate, |
682 | .getattr = xfs_vn_getattr, | |
683 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
684 | .setxattr = generic_setxattr, |
685 | .getxattr = generic_getxattr, | |
686 | .removexattr = generic_removexattr, | |
416c6d5b | 687 | .listxattr = xfs_vn_listxattr, |
3ed65264 | 688 | .fallocate = xfs_vn_fallocate, |
f35642e2 | 689 | .fiemap = xfs_vn_fiemap, |
1da177e4 LT |
690 | }; |
691 | ||
41be8bed | 692 | static const struct inode_operations xfs_dir_inode_operations = { |
416c6d5b NS |
693 | .create = xfs_vn_create, |
694 | .lookup = xfs_vn_lookup, | |
695 | .link = xfs_vn_link, | |
696 | .unlink = xfs_vn_unlink, | |
697 | .symlink = xfs_vn_symlink, | |
698 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
699 | /* |
700 | * Yes, XFS uses the same method for rmdir and unlink. | |
701 | * | |
702 | * There are some subtile differences deeper in the code, | |
703 | * but we use S_ISDIR to check for those. | |
704 | */ | |
705 | .rmdir = xfs_vn_unlink, | |
416c6d5b NS |
706 | .mknod = xfs_vn_mknod, |
707 | .rename = xfs_vn_rename, | |
18f4c644 | 708 | .check_acl = xfs_check_acl, |
416c6d5b NS |
709 | .getattr = xfs_vn_getattr, |
710 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
711 | .setxattr = generic_setxattr, |
712 | .getxattr = generic_getxattr, | |
713 | .removexattr = generic_removexattr, | |
416c6d5b | 714 | .listxattr = xfs_vn_listxattr, |
1da177e4 LT |
715 | }; |
716 | ||
41be8bed | 717 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
384f3ced BN |
718 | .create = xfs_vn_create, |
719 | .lookup = xfs_vn_ci_lookup, | |
720 | .link = xfs_vn_link, | |
721 | .unlink = xfs_vn_unlink, | |
722 | .symlink = xfs_vn_symlink, | |
723 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
724 | /* |
725 | * Yes, XFS uses the same method for rmdir and unlink. | |
726 | * | |
727 | * There are some subtile differences deeper in the code, | |
728 | * but we use S_ISDIR to check for those. | |
729 | */ | |
730 | .rmdir = xfs_vn_unlink, | |
384f3ced BN |
731 | .mknod = xfs_vn_mknod, |
732 | .rename = xfs_vn_rename, | |
18f4c644 | 733 | .check_acl = xfs_check_acl, |
384f3ced BN |
734 | .getattr = xfs_vn_getattr, |
735 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
736 | .setxattr = generic_setxattr, |
737 | .getxattr = generic_getxattr, | |
738 | .removexattr = generic_removexattr, | |
384f3ced | 739 | .listxattr = xfs_vn_listxattr, |
384f3ced BN |
740 | }; |
741 | ||
41be8bed | 742 | static const struct inode_operations xfs_symlink_inode_operations = { |
1da177e4 | 743 | .readlink = generic_readlink, |
416c6d5b NS |
744 | .follow_link = xfs_vn_follow_link, |
745 | .put_link = xfs_vn_put_link, | |
18f4c644 | 746 | .check_acl = xfs_check_acl, |
416c6d5b NS |
747 | .getattr = xfs_vn_getattr, |
748 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
749 | .setxattr = generic_setxattr, |
750 | .getxattr = generic_getxattr, | |
751 | .removexattr = generic_removexattr, | |
416c6d5b | 752 | .listxattr = xfs_vn_listxattr, |
1da177e4 | 753 | }; |
41be8bed CH |
754 | |
755 | STATIC void | |
756 | xfs_diflags_to_iflags( | |
757 | struct inode *inode, | |
758 | struct xfs_inode *ip) | |
759 | { | |
760 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
761 | inode->i_flags |= S_IMMUTABLE; | |
762 | else | |
763 | inode->i_flags &= ~S_IMMUTABLE; | |
764 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
765 | inode->i_flags |= S_APPEND; | |
766 | else | |
767 | inode->i_flags &= ~S_APPEND; | |
768 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
769 | inode->i_flags |= S_SYNC; | |
770 | else | |
771 | inode->i_flags &= ~S_SYNC; | |
772 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
773 | inode->i_flags |= S_NOATIME; | |
774 | else | |
775 | inode->i_flags &= ~S_NOATIME; | |
776 | } | |
777 | ||
778 | /* | |
779 | * Initialize the Linux inode, set up the operation vectors and | |
780 | * unlock the inode. | |
781 | * | |
782 | * When reading existing inodes from disk this is called directly | |
783 | * from xfs_iget, when creating a new inode it is called from | |
784 | * xfs_ialloc after setting up the inode. | |
bf904248 DC |
785 | * |
786 | * We are always called with an uninitialised linux inode here. | |
787 | * We need to initialise the necessary fields and take a reference | |
788 | * on it. | |
41be8bed CH |
789 | */ |
790 | void | |
791 | xfs_setup_inode( | |
792 | struct xfs_inode *ip) | |
793 | { | |
bf904248 DC |
794 | struct inode *inode = &ip->i_vnode; |
795 | ||
796 | inode->i_ino = ip->i_ino; | |
eaff8079 | 797 | inode->i_state = I_NEW; |
bf904248 | 798 | inode_add_to_lists(ip->i_mount->m_super, inode); |
41be8bed CH |
799 | |
800 | inode->i_mode = ip->i_d.di_mode; | |
801 | inode->i_nlink = ip->i_d.di_nlink; | |
802 | inode->i_uid = ip->i_d.di_uid; | |
803 | inode->i_gid = ip->i_d.di_gid; | |
804 | ||
805 | switch (inode->i_mode & S_IFMT) { | |
806 | case S_IFBLK: | |
807 | case S_IFCHR: | |
808 | inode->i_rdev = | |
809 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
810 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
811 | break; | |
812 | default: | |
813 | inode->i_rdev = 0; | |
814 | break; | |
815 | } | |
816 | ||
817 | inode->i_generation = ip->i_d.di_gen; | |
818 | i_size_write(inode, ip->i_d.di_size); | |
819 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
820 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
821 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
822 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
823 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
824 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
825 | xfs_diflags_to_iflags(inode, ip); | |
41be8bed CH |
826 | |
827 | switch (inode->i_mode & S_IFMT) { | |
828 | case S_IFREG: | |
829 | inode->i_op = &xfs_inode_operations; | |
830 | inode->i_fop = &xfs_file_operations; | |
831 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
832 | break; | |
833 | case S_IFDIR: | |
834 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) | |
835 | inode->i_op = &xfs_dir_ci_inode_operations; | |
836 | else | |
837 | inode->i_op = &xfs_dir_inode_operations; | |
838 | inode->i_fop = &xfs_dir_file_operations; | |
839 | break; | |
840 | case S_IFLNK: | |
841 | inode->i_op = &xfs_symlink_inode_operations; | |
842 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) | |
843 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
844 | break; | |
845 | default: | |
846 | inode->i_op = &xfs_inode_operations; | |
847 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
848 | break; | |
849 | } | |
850 | ||
851 | xfs_iflags_clear(ip, XFS_INEW); | |
852 | barrier(); | |
853 | ||
854 | unlock_new_inode(inode); | |
855 | } |