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" | |
70a9883c | 20 | #include "xfs_shared.h" |
239880ef DC |
21 | #include "xfs_format.h" |
22 | #include "xfs_log_format.h" | |
23 | #include "xfs_trans_resv.h" | |
1da177e4 LT |
24 | #include "xfs_sb.h" |
25 | #include "xfs_ag.h" | |
1da177e4 | 26 | #include "xfs_mount.h" |
57062787 | 27 | #include "xfs_da_format.h" |
1da177e4 LT |
28 | #include "xfs_inode.h" |
29 | #include "xfs_bmap.h" | |
68988114 | 30 | #include "xfs_bmap_util.h" |
239880ef | 31 | #include "xfs_acl.h" |
239880ef | 32 | #include "xfs_quota.h" |
1da177e4 | 33 | #include "xfs_error.h" |
1da177e4 | 34 | #include "xfs_attr.h" |
239880ef | 35 | #include "xfs_trans.h" |
0b1b213f | 36 | #include "xfs_trace.h" |
27b52867 | 37 | #include "xfs_icache.h" |
c24b5dfa | 38 | #include "xfs_symlink.h" |
0cb97766 | 39 | #include "xfs_da_btree.h" |
0cb97766 | 40 | #include "xfs_dir2_priv.h" |
a4fbe6ab | 41 | #include "xfs_dinode.h" |
1da177e4 | 42 | |
16f7e0fe | 43 | #include <linux/capability.h> |
1da177e4 LT |
44 | #include <linux/xattr.h> |
45 | #include <linux/namei.h> | |
ef14f0c1 | 46 | #include <linux/posix_acl.h> |
446ada4a | 47 | #include <linux/security.h> |
f35642e2 | 48 | #include <linux/fiemap.h> |
5a0e3ad6 | 49 | #include <linux/slab.h> |
1da177e4 | 50 | |
8d2a5e6e DC |
51 | static int |
52 | xfs_initxattrs( | |
53 | struct inode *inode, | |
54 | const struct xattr *xattr_array, | |
55 | void *fs_info) | |
9d8f13ba | 56 | { |
8d2a5e6e DC |
57 | const struct xattr *xattr; |
58 | struct xfs_inode *ip = XFS_I(inode); | |
59 | int error = 0; | |
9d8f13ba MZ |
60 | |
61 | for (xattr = xattr_array; xattr->name != NULL; xattr++) { | |
62 | error = xfs_attr_set(ip, xattr->name, xattr->value, | |
63 | xattr->value_len, ATTR_SECURE); | |
64 | if (error < 0) | |
65 | break; | |
66 | } | |
67 | return error; | |
68 | } | |
69 | ||
446ada4a NS |
70 | /* |
71 | * Hook in SELinux. This is not quite correct yet, what we really need | |
72 | * here (as we do for default ACLs) is a mechanism by which creation of | |
73 | * these attrs can be journalled at inode creation time (along with the | |
74 | * inode, of course, such that log replay can't cause these to be lost). | |
75 | */ | |
9d8f13ba | 76 | |
446ada4a | 77 | STATIC int |
416c6d5b | 78 | xfs_init_security( |
af048193 | 79 | struct inode *inode, |
2a7dba39 EP |
80 | struct inode *dir, |
81 | const struct qstr *qstr) | |
446ada4a | 82 | { |
9d8f13ba MZ |
83 | return security_inode_init_security(inode, dir, qstr, |
84 | &xfs_initxattrs, NULL); | |
446ada4a NS |
85 | } |
86 | ||
556b8b16 BN |
87 | static void |
88 | xfs_dentry_to_name( | |
89 | struct xfs_name *namep, | |
0cb97766 DC |
90 | struct dentry *dentry, |
91 | int mode) | |
556b8b16 BN |
92 | { |
93 | namep->name = dentry->d_name.name; | |
94 | namep->len = dentry->d_name.len; | |
0cb97766 | 95 | namep->type = xfs_mode_to_ftype[(mode & S_IFMT) >> S_SHIFT]; |
556b8b16 BN |
96 | } |
97 | ||
7989cb8e | 98 | STATIC void |
416c6d5b | 99 | xfs_cleanup_inode( |
739bfb2a | 100 | struct inode *dir, |
af048193 | 101 | struct inode *inode, |
8f112e3b | 102 | struct dentry *dentry) |
3a69c7dc | 103 | { |
556b8b16 | 104 | struct xfs_name teardown; |
3a69c7dc YL |
105 | |
106 | /* Oh, the horror. | |
220b5284 | 107 | * If we can't add the ACL or we fail in |
416c6d5b | 108 | * xfs_init_security we must back out. |
3a69c7dc YL |
109 | * ENOSPC can hit here, among other things. |
110 | */ | |
0cb97766 | 111 | xfs_dentry_to_name(&teardown, dentry, 0); |
3a69c7dc | 112 | |
8f112e3b | 113 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
af048193 | 114 | iput(inode); |
3a69c7dc YL |
115 | } |
116 | ||
1da177e4 | 117 | STATIC int |
416c6d5b | 118 | xfs_vn_mknod( |
1da177e4 LT |
119 | struct inode *dir, |
120 | struct dentry *dentry, | |
1a67aafb | 121 | umode_t mode, |
1da177e4 LT |
122 | dev_t rdev) |
123 | { | |
db0bb7ba | 124 | struct inode *inode; |
979ebab1 | 125 | struct xfs_inode *ip = NULL; |
2401dc29 | 126 | struct posix_acl *default_acl, *acl; |
556b8b16 | 127 | struct xfs_name name; |
1da177e4 LT |
128 | int error; |
129 | ||
130 | /* | |
131 | * Irix uses Missed'em'V split, but doesn't want to see | |
132 | * the upper 5 bits of (14bit) major. | |
133 | */ | |
517b5e8c CH |
134 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
135 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) | |
136 | return -EINVAL; | |
137 | rdev = sysv_encode_dev(rdev); | |
138 | } else { | |
139 | rdev = 0; | |
140 | } | |
1da177e4 | 141 | |
2401dc29 CH |
142 | error = posix_acl_create(dir, &mode, &default_acl, &acl); |
143 | if (error) | |
144 | return error; | |
1da177e4 | 145 | |
0cb97766 | 146 | xfs_dentry_to_name(&name, dentry, mode); |
6c77b0ea | 147 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); |
db0bb7ba CH |
148 | if (unlikely(error)) |
149 | goto out_free_acl; | |
446ada4a | 150 | |
01651646 | 151 | inode = VFS_I(ip); |
979ebab1 | 152 | |
2a7dba39 | 153 | error = xfs_init_security(inode, dir, &dentry->d_name); |
db0bb7ba CH |
154 | if (unlikely(error)) |
155 | goto out_cleanup_inode; | |
156 | ||
2401dc29 | 157 | #ifdef CONFIG_XFS_POSIX_ACL |
db0bb7ba | 158 | if (default_acl) { |
2401dc29 CH |
159 | error = xfs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); |
160 | if (error) | |
db0bb7ba | 161 | goto out_cleanup_inode; |
1da177e4 | 162 | } |
2401dc29 CH |
163 | if (acl) { |
164 | error = xfs_set_acl(inode, acl, ACL_TYPE_ACCESS); | |
165 | if (error) | |
166 | goto out_cleanup_inode; | |
167 | } | |
168 | #endif | |
1da177e4 | 169 | |
db0bb7ba | 170 | d_instantiate(dentry, inode); |
2401dc29 CH |
171 | out_free_acl: |
172 | if (default_acl) | |
173 | posix_acl_release(default_acl); | |
174 | if (acl) | |
175 | posix_acl_release(acl); | |
db0bb7ba CH |
176 | return -error; |
177 | ||
178 | out_cleanup_inode: | |
8f112e3b | 179 | xfs_cleanup_inode(dir, inode, dentry); |
2401dc29 | 180 | goto out_free_acl; |
1da177e4 LT |
181 | } |
182 | ||
183 | STATIC int | |
416c6d5b | 184 | xfs_vn_create( |
1da177e4 LT |
185 | struct inode *dir, |
186 | struct dentry *dentry, | |
4acdaf27 | 187 | umode_t mode, |
ebfc3b49 | 188 | bool flags) |
1da177e4 | 189 | { |
416c6d5b | 190 | return xfs_vn_mknod(dir, dentry, mode, 0); |
1da177e4 LT |
191 | } |
192 | ||
193 | STATIC int | |
416c6d5b | 194 | xfs_vn_mkdir( |
1da177e4 LT |
195 | struct inode *dir, |
196 | struct dentry *dentry, | |
18bb1db3 | 197 | umode_t mode) |
1da177e4 | 198 | { |
416c6d5b | 199 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
1da177e4 LT |
200 | } |
201 | ||
202 | STATIC struct dentry * | |
416c6d5b | 203 | xfs_vn_lookup( |
1da177e4 LT |
204 | struct inode *dir, |
205 | struct dentry *dentry, | |
00cd8dd3 | 206 | unsigned int flags) |
1da177e4 | 207 | { |
ef1f5e7a | 208 | struct xfs_inode *cip; |
556b8b16 | 209 | struct xfs_name name; |
1da177e4 LT |
210 | int error; |
211 | ||
212 | if (dentry->d_name.len >= MAXNAMELEN) | |
213 | return ERR_PTR(-ENAMETOOLONG); | |
214 | ||
0cb97766 | 215 | xfs_dentry_to_name(&name, dentry, 0); |
384f3ced | 216 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
67fcaa73 | 217 | if (unlikely(error)) { |
1da177e4 LT |
218 | if (unlikely(error != ENOENT)) |
219 | return ERR_PTR(-error); | |
220 | d_add(dentry, NULL); | |
221 | return NULL; | |
222 | } | |
223 | ||
01651646 | 224 | return d_splice_alias(VFS_I(cip), dentry); |
1da177e4 LT |
225 | } |
226 | ||
384f3ced BN |
227 | STATIC struct dentry * |
228 | xfs_vn_ci_lookup( | |
229 | struct inode *dir, | |
230 | struct dentry *dentry, | |
00cd8dd3 | 231 | unsigned int flags) |
384f3ced BN |
232 | { |
233 | struct xfs_inode *ip; | |
234 | struct xfs_name xname; | |
235 | struct xfs_name ci_name; | |
236 | struct qstr dname; | |
237 | int error; | |
238 | ||
239 | if (dentry->d_name.len >= MAXNAMELEN) | |
240 | return ERR_PTR(-ENAMETOOLONG); | |
241 | ||
0cb97766 | 242 | xfs_dentry_to_name(&xname, dentry, 0); |
384f3ced BN |
243 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); |
244 | if (unlikely(error)) { | |
245 | if (unlikely(error != ENOENT)) | |
246 | return ERR_PTR(-error); | |
866d5dc9 BN |
247 | /* |
248 | * call d_add(dentry, NULL) here when d_drop_negative_children | |
249 | * is called in xfs_vn_mknod (ie. allow negative dentries | |
250 | * with CI filesystems). | |
251 | */ | |
384f3ced BN |
252 | return NULL; |
253 | } | |
254 | ||
255 | /* if exact match, just splice and exit */ | |
256 | if (!ci_name.name) | |
01651646 | 257 | return d_splice_alias(VFS_I(ip), dentry); |
384f3ced BN |
258 | |
259 | /* else case-insensitive match... */ | |
260 | dname.name = ci_name.name; | |
261 | dname.len = ci_name.len; | |
e45b590b | 262 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
384f3ced BN |
263 | kmem_free(ci_name.name); |
264 | return dentry; | |
265 | } | |
266 | ||
1da177e4 | 267 | STATIC int |
416c6d5b | 268 | xfs_vn_link( |
1da177e4 LT |
269 | struct dentry *old_dentry, |
270 | struct inode *dir, | |
271 | struct dentry *dentry) | |
272 | { | |
d9424b3c | 273 | struct inode *inode = old_dentry->d_inode; |
556b8b16 | 274 | struct xfs_name name; |
1da177e4 LT |
275 | int error; |
276 | ||
0cb97766 | 277 | xfs_dentry_to_name(&name, dentry, inode->i_mode); |
1da177e4 | 278 | |
556b8b16 | 279 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
d9424b3c | 280 | if (unlikely(error)) |
a3da7896 | 281 | return -error; |
a3da7896 | 282 | |
7de9c6ee | 283 | ihold(inode); |
a3da7896 CH |
284 | d_instantiate(dentry, inode); |
285 | return 0; | |
1da177e4 LT |
286 | } |
287 | ||
288 | STATIC int | |
416c6d5b | 289 | xfs_vn_unlink( |
1da177e4 LT |
290 | struct inode *dir, |
291 | struct dentry *dentry) | |
292 | { | |
556b8b16 | 293 | struct xfs_name name; |
1da177e4 LT |
294 | int error; |
295 | ||
0cb97766 | 296 | xfs_dentry_to_name(&name, dentry, 0); |
1da177e4 | 297 | |
e5700704 CH |
298 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
299 | if (error) | |
300 | return error; | |
301 | ||
302 | /* | |
303 | * With unlink, the VFS makes the dentry "negative": no inode, | |
304 | * but still hashed. This is incompatible with case-insensitive | |
305 | * mode, so invalidate (unhash) the dentry in CI-mode. | |
306 | */ | |
307 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) | |
308 | d_invalidate(dentry); | |
309 | return 0; | |
1da177e4 LT |
310 | } |
311 | ||
312 | STATIC int | |
416c6d5b | 313 | xfs_vn_symlink( |
1da177e4 LT |
314 | struct inode *dir, |
315 | struct dentry *dentry, | |
316 | const char *symname) | |
317 | { | |
3937be5b CH |
318 | struct inode *inode; |
319 | struct xfs_inode *cip = NULL; | |
556b8b16 | 320 | struct xfs_name name; |
1da177e4 | 321 | int error; |
576b1d67 | 322 | umode_t mode; |
1da177e4 | 323 | |
3e5daf05 | 324 | mode = S_IFLNK | |
ce3b0f8d | 325 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
0cb97766 | 326 | xfs_dentry_to_name(&name, dentry, mode); |
1da177e4 | 327 | |
6c77b0ea | 328 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); |
3937be5b CH |
329 | if (unlikely(error)) |
330 | goto out; | |
331 | ||
01651646 | 332 | inode = VFS_I(cip); |
3937be5b | 333 | |
2a7dba39 | 334 | error = xfs_init_security(inode, dir, &dentry->d_name); |
3937be5b CH |
335 | if (unlikely(error)) |
336 | goto out_cleanup_inode; | |
337 | ||
338 | d_instantiate(dentry, inode); | |
3937be5b CH |
339 | return 0; |
340 | ||
341 | out_cleanup_inode: | |
8f112e3b | 342 | xfs_cleanup_inode(dir, inode, dentry); |
3937be5b | 343 | out: |
1da177e4 LT |
344 | return -error; |
345 | } | |
346 | ||
1da177e4 | 347 | STATIC int |
416c6d5b | 348 | xfs_vn_rename( |
1da177e4 LT |
349 | struct inode *odir, |
350 | struct dentry *odentry, | |
351 | struct inode *ndir, | |
352 | struct dentry *ndentry) | |
353 | { | |
354 | struct inode *new_inode = ndentry->d_inode; | |
556b8b16 BN |
355 | struct xfs_name oname; |
356 | struct xfs_name nname; | |
1da177e4 | 357 | |
0cb97766 DC |
358 | xfs_dentry_to_name(&oname, odentry, 0); |
359 | xfs_dentry_to_name(&nname, ndentry, odentry->d_inode->i_mode); | |
556b8b16 | 360 | |
e5700704 | 361 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
cfa853e4 | 362 | XFS_I(ndir), &nname, new_inode ? |
0cb97766 | 363 | XFS_I(new_inode) : NULL); |
1da177e4 LT |
364 | } |
365 | ||
366 | /* | |
367 | * careful here - this function can get called recursively, so | |
368 | * we need to be very careful about how much stack we use. | |
369 | * uio is kmalloced for this reason... | |
370 | */ | |
008b150a | 371 | STATIC void * |
416c6d5b | 372 | xfs_vn_follow_link( |
1da177e4 LT |
373 | struct dentry *dentry, |
374 | struct nameidata *nd) | |
375 | { | |
1da177e4 | 376 | char *link; |
804c83c3 | 377 | int error = -ENOMEM; |
1da177e4 | 378 | |
f52720ca | 379 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
804c83c3 CH |
380 | if (!link) |
381 | goto out_err; | |
1da177e4 | 382 | |
739bfb2a | 383 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
804c83c3 CH |
384 | if (unlikely(error)) |
385 | goto out_kfree; | |
1da177e4 LT |
386 | |
387 | nd_set_link(nd, link); | |
008b150a | 388 | return NULL; |
804c83c3 CH |
389 | |
390 | out_kfree: | |
391 | kfree(link); | |
392 | out_err: | |
393 | nd_set_link(nd, ERR_PTR(error)); | |
394 | return NULL; | |
1da177e4 LT |
395 | } |
396 | ||
1da177e4 | 397 | STATIC int |
416c6d5b | 398 | xfs_vn_getattr( |
c43f4087 CH |
399 | struct vfsmount *mnt, |
400 | struct dentry *dentry, | |
401 | struct kstat *stat) | |
1da177e4 | 402 | { |
c43f4087 CH |
403 | struct inode *inode = dentry->d_inode; |
404 | struct xfs_inode *ip = XFS_I(inode); | |
405 | struct xfs_mount *mp = ip->i_mount; | |
406 | ||
cca28fb8 | 407 | trace_xfs_getattr(ip); |
c43f4087 CH |
408 | |
409 | if (XFS_FORCED_SHUTDOWN(mp)) | |
ed32201e | 410 | return -XFS_ERROR(EIO); |
c43f4087 CH |
411 | |
412 | stat->size = XFS_ISIZE(ip); | |
413 | stat->dev = inode->i_sb->s_dev; | |
414 | stat->mode = ip->i_d.di_mode; | |
415 | stat->nlink = ip->i_d.di_nlink; | |
7aab1b28 DE |
416 | stat->uid = inode->i_uid; |
417 | stat->gid = inode->i_gid; | |
c43f4087 | 418 | stat->ino = ip->i_ino; |
c43f4087 | 419 | stat->atime = inode->i_atime; |
f9581b14 CH |
420 | stat->mtime = inode->i_mtime; |
421 | stat->ctime = inode->i_ctime; | |
c43f4087 CH |
422 | stat->blocks = |
423 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
424 | ||
425 | ||
426 | switch (inode->i_mode & S_IFMT) { | |
427 | case S_IFBLK: | |
428 | case S_IFCHR: | |
429 | stat->blksize = BLKDEV_IOSIZE; | |
430 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
431 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
432 | break; | |
433 | default: | |
71ddabb9 | 434 | if (XFS_IS_REALTIME_INODE(ip)) { |
c43f4087 CH |
435 | /* |
436 | * If the file blocks are being allocated from a | |
437 | * realtime volume, then return the inode's realtime | |
438 | * extent size or the realtime volume's extent size. | |
439 | */ | |
440 | stat->blksize = | |
441 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; | |
442 | } else | |
443 | stat->blksize = xfs_preferred_iosize(mp); | |
444 | stat->rdev = 0; | |
445 | break; | |
69e23b9a | 446 | } |
c43f4087 CH |
447 | |
448 | return 0; | |
1da177e4 LT |
449 | } |
450 | ||
56c19e89 DC |
451 | static void |
452 | xfs_setattr_mode( | |
56c19e89 DC |
453 | struct xfs_inode *ip, |
454 | struct iattr *iattr) | |
455 | { | |
0c3d88df CH |
456 | struct inode *inode = VFS_I(ip); |
457 | umode_t mode = iattr->ia_mode; | |
56c19e89 | 458 | |
56c19e89 DC |
459 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
460 | ||
56c19e89 DC |
461 | ip->i_d.di_mode &= S_IFMT; |
462 | ip->i_d.di_mode |= mode & ~S_IFMT; | |
463 | ||
464 | inode->i_mode &= S_IFMT; | |
465 | inode->i_mode |= mode & ~S_IFMT; | |
466 | } | |
467 | ||
c91c46c1 CH |
468 | static void |
469 | xfs_setattr_time( | |
470 | struct xfs_inode *ip, | |
471 | struct iattr *iattr) | |
472 | { | |
473 | struct inode *inode = VFS_I(ip); | |
474 | ||
475 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
476 | ||
477 | if (iattr->ia_valid & ATTR_ATIME) { | |
478 | inode->i_atime = iattr->ia_atime; | |
479 | ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec; | |
480 | ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec; | |
481 | } | |
482 | if (iattr->ia_valid & ATTR_CTIME) { | |
483 | inode->i_ctime = iattr->ia_ctime; | |
484 | ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; | |
485 | ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; | |
486 | } | |
487 | if (iattr->ia_valid & ATTR_MTIME) { | |
488 | inode->i_mtime = iattr->ia_mtime; | |
489 | ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; | |
490 | ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; | |
491 | } | |
492 | } | |
493 | ||
c4ed4243 CH |
494 | int |
495 | xfs_setattr_nonsize( | |
496 | struct xfs_inode *ip, | |
497 | struct iattr *iattr, | |
498 | int flags) | |
499 | { | |
500 | xfs_mount_t *mp = ip->i_mount; | |
501 | struct inode *inode = VFS_I(ip); | |
502 | int mask = iattr->ia_valid; | |
503 | xfs_trans_t *tp; | |
504 | int error; | |
7aab1b28 DE |
505 | kuid_t uid = GLOBAL_ROOT_UID, iuid = GLOBAL_ROOT_UID; |
506 | kgid_t gid = GLOBAL_ROOT_GID, igid = GLOBAL_ROOT_GID; | |
c4ed4243 CH |
507 | struct xfs_dquot *udqp = NULL, *gdqp = NULL; |
508 | struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL; | |
509 | ||
510 | trace_xfs_setattr(ip); | |
511 | ||
42c49d7f CM |
512 | /* If acls are being inherited, we already have this checked */ |
513 | if (!(flags & XFS_ATTR_NOACL)) { | |
514 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
515 | return XFS_ERROR(EROFS); | |
c4ed4243 | 516 | |
42c49d7f CM |
517 | if (XFS_FORCED_SHUTDOWN(mp)) |
518 | return XFS_ERROR(EIO); | |
c4ed4243 | 519 | |
42c49d7f CM |
520 | error = -inode_change_ok(inode, iattr); |
521 | if (error) | |
522 | return XFS_ERROR(error); | |
523 | } | |
c4ed4243 CH |
524 | |
525 | ASSERT((mask & ATTR_SIZE) == 0); | |
526 | ||
527 | /* | |
528 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
529 | * before we start any other transactions. Trying to do this later | |
530 | * is messy. We don't care to take a readlock to look at the ids | |
531 | * in inode here, because we can't hold it across the trans_reserve. | |
532 | * If the IDs do change before we take the ilock, we're covered | |
533 | * because the i_*dquot fields will get updated anyway. | |
534 | */ | |
535 | if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) { | |
536 | uint qflags = 0; | |
537 | ||
538 | if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) { | |
539 | uid = iattr->ia_uid; | |
540 | qflags |= XFS_QMOPT_UQUOTA; | |
541 | } else { | |
7aab1b28 | 542 | uid = inode->i_uid; |
c4ed4243 CH |
543 | } |
544 | if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) { | |
545 | gid = iattr->ia_gid; | |
546 | qflags |= XFS_QMOPT_GQUOTA; | |
547 | } else { | |
7aab1b28 | 548 | gid = inode->i_gid; |
c4ed4243 CH |
549 | } |
550 | ||
551 | /* | |
552 | * We take a reference when we initialize udqp and gdqp, | |
553 | * so it is important that we never blindly double trip on | |
554 | * the same variable. See xfs_create() for an example. | |
555 | */ | |
556 | ASSERT(udqp == NULL); | |
557 | ASSERT(gdqp == NULL); | |
7aab1b28 DE |
558 | error = xfs_qm_vop_dqalloc(ip, xfs_kuid_to_uid(uid), |
559 | xfs_kgid_to_gid(gid), | |
560 | xfs_get_projid(ip), | |
561 | qflags, &udqp, &gdqp, NULL); | |
c4ed4243 CH |
562 | if (error) |
563 | return error; | |
564 | } | |
565 | ||
566 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
3d3c8b52 | 567 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
c4ed4243 CH |
568 | if (error) |
569 | goto out_dqrele; | |
570 | ||
571 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
572 | ||
573 | /* | |
574 | * Change file ownership. Must be the owner or privileged. | |
575 | */ | |
576 | if (mask & (ATTR_UID|ATTR_GID)) { | |
577 | /* | |
578 | * These IDs could have changed since we last looked at them. | |
579 | * But, we're assured that if the ownership did change | |
580 | * while we didn't have the inode locked, inode's dquot(s) | |
581 | * would have changed also. | |
582 | */ | |
7aab1b28 DE |
583 | iuid = inode->i_uid; |
584 | igid = inode->i_gid; | |
c4ed4243 CH |
585 | gid = (mask & ATTR_GID) ? iattr->ia_gid : igid; |
586 | uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid; | |
587 | ||
588 | /* | |
589 | * Do a quota reservation only if uid/gid is actually | |
590 | * going to change. | |
591 | */ | |
592 | if (XFS_IS_QUOTA_RUNNING(mp) && | |
7aab1b28 DE |
593 | ((XFS_IS_UQUOTA_ON(mp) && !uid_eq(iuid, uid)) || |
594 | (XFS_IS_GQUOTA_ON(mp) && !gid_eq(igid, gid)))) { | |
c4ed4243 CH |
595 | ASSERT(tp); |
596 | error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, | |
92f8ff73 | 597 | NULL, capable(CAP_FOWNER) ? |
c4ed4243 CH |
598 | XFS_QMOPT_FORCE_RES : 0); |
599 | if (error) /* out of quota */ | |
600 | goto out_trans_cancel; | |
601 | } | |
602 | } | |
603 | ||
ddc3415a | 604 | xfs_trans_ijoin(tp, ip, 0); |
c4ed4243 CH |
605 | |
606 | /* | |
607 | * Change file ownership. Must be the owner or privileged. | |
608 | */ | |
609 | if (mask & (ATTR_UID|ATTR_GID)) { | |
610 | /* | |
611 | * CAP_FSETID overrides the following restrictions: | |
612 | * | |
613 | * The set-user-ID and set-group-ID bits of a file will be | |
614 | * cleared upon successful return from chown() | |
615 | */ | |
616 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
617 | !capable(CAP_FSETID)) | |
618 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
619 | ||
620 | /* | |
621 | * Change the ownerships and register quota modifications | |
622 | * in the transaction. | |
623 | */ | |
7aab1b28 | 624 | if (!uid_eq(iuid, uid)) { |
c4ed4243 CH |
625 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) { |
626 | ASSERT(mask & ATTR_UID); | |
627 | ASSERT(udqp); | |
628 | olddquot1 = xfs_qm_vop_chown(tp, ip, | |
629 | &ip->i_udquot, udqp); | |
630 | } | |
7aab1b28 | 631 | ip->i_d.di_uid = xfs_kuid_to_uid(uid); |
c4ed4243 CH |
632 | inode->i_uid = uid; |
633 | } | |
7aab1b28 | 634 | if (!gid_eq(igid, gid)) { |
c4ed4243 | 635 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) { |
5a01dd54 JL |
636 | ASSERT(xfs_sb_version_has_pquotino(&mp->m_sb) || |
637 | !XFS_IS_PQUOTA_ON(mp)); | |
c4ed4243 CH |
638 | ASSERT(mask & ATTR_GID); |
639 | ASSERT(gdqp); | |
640 | olddquot2 = xfs_qm_vop_chown(tp, ip, | |
641 | &ip->i_gdquot, gdqp); | |
642 | } | |
7aab1b28 | 643 | ip->i_d.di_gid = xfs_kgid_to_gid(gid); |
c4ed4243 CH |
644 | inode->i_gid = gid; |
645 | } | |
646 | } | |
647 | ||
56c19e89 | 648 | if (mask & ATTR_MODE) |
0c3d88df | 649 | xfs_setattr_mode(ip, iattr); |
c91c46c1 CH |
650 | if (mask & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME)) |
651 | xfs_setattr_time(ip, iattr); | |
c4ed4243 CH |
652 | |
653 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
654 | ||
655 | XFS_STATS_INC(xs_ig_attrchg); | |
656 | ||
657 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
658 | xfs_trans_set_sync(tp); | |
659 | error = xfs_trans_commit(tp, 0); | |
660 | ||
661 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
662 | ||
663 | /* | |
664 | * Release any dquot(s) the inode had kept before chown. | |
665 | */ | |
666 | xfs_qm_dqrele(olddquot1); | |
667 | xfs_qm_dqrele(olddquot2); | |
668 | xfs_qm_dqrele(udqp); | |
669 | xfs_qm_dqrele(gdqp); | |
670 | ||
671 | if (error) | |
672 | return XFS_ERROR(error); | |
673 | ||
674 | /* | |
675 | * XXX(hch): Updating the ACL entries is not atomic vs the i_mode | |
676 | * update. We could avoid this with linked transactions | |
677 | * and passing down the transaction pointer all the way | |
678 | * to attr_set. No previous user of the generic | |
679 | * Posix ACL code seems to care about this issue either. | |
680 | */ | |
681 | if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) { | |
2401dc29 | 682 | error = -posix_acl_chmod(inode, inode->i_mode); |
c4ed4243 CH |
683 | if (error) |
684 | return XFS_ERROR(error); | |
685 | } | |
686 | ||
687 | return 0; | |
688 | ||
689 | out_trans_cancel: | |
690 | xfs_trans_cancel(tp, 0); | |
691 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
692 | out_dqrele: | |
693 | xfs_qm_dqrele(udqp); | |
694 | xfs_qm_dqrele(gdqp); | |
695 | return error; | |
696 | } | |
697 | ||
698 | /* | |
699 | * Truncate file. Must have write permission and not be a directory. | |
700 | */ | |
701 | int | |
702 | xfs_setattr_size( | |
703 | struct xfs_inode *ip, | |
76ca4c23 | 704 | struct iattr *iattr) |
c4ed4243 CH |
705 | { |
706 | struct xfs_mount *mp = ip->i_mount; | |
707 | struct inode *inode = VFS_I(ip); | |
673e8e59 | 708 | xfs_off_t oldsize, newsize; |
c4ed4243 CH |
709 | struct xfs_trans *tp; |
710 | int error; | |
f38996f5 | 711 | uint lock_flags = 0; |
c4ed4243 CH |
712 | uint commit_flags = 0; |
713 | ||
714 | trace_xfs_setattr(ip); | |
715 | ||
716 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
717 | return XFS_ERROR(EROFS); | |
718 | ||
719 | if (XFS_FORCED_SHUTDOWN(mp)) | |
720 | return XFS_ERROR(EIO); | |
721 | ||
722 | error = -inode_change_ok(inode, iattr); | |
723 | if (error) | |
724 | return XFS_ERROR(error); | |
725 | ||
76ca4c23 | 726 | ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); |
c4ed4243 | 727 | ASSERT(S_ISREG(ip->i_d.di_mode)); |
fe60a8a0 CH |
728 | ASSERT((iattr->ia_valid & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| |
729 | ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); | |
c4ed4243 | 730 | |
ce7ae151 | 731 | oldsize = inode->i_size; |
673e8e59 CH |
732 | newsize = iattr->ia_size; |
733 | ||
c4ed4243 CH |
734 | /* |
735 | * Short circuit the truncate case for zero length files. | |
736 | */ | |
673e8e59 | 737 | if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) { |
fe60a8a0 | 738 | if (!(iattr->ia_valid & (ATTR_CTIME|ATTR_MTIME))) |
76ca4c23 | 739 | return 0; |
681b1200 CH |
740 | |
741 | /* | |
742 | * Use the regular setattr path to update the timestamps. | |
743 | */ | |
681b1200 CH |
744 | iattr->ia_valid &= ~ATTR_SIZE; |
745 | return xfs_setattr_nonsize(ip, iattr, 0); | |
c4ed4243 CH |
746 | } |
747 | ||
748 | /* | |
749 | * Make sure that the dquots are attached to the inode. | |
750 | */ | |
f38996f5 | 751 | error = xfs_qm_dqattach(ip, 0); |
c4ed4243 | 752 | if (error) |
76ca4c23 | 753 | return error; |
c4ed4243 CH |
754 | |
755 | /* | |
756 | * Now we can make the changes. Before we join the inode to the | |
757 | * transaction, take care of the part of the truncation that must be | |
758 | * done without the inode lock. This needs to be done before joining | |
759 | * the inode to the transaction, because the inode cannot be unlocked | |
760 | * once it is a part of the transaction. | |
761 | */ | |
673e8e59 | 762 | if (newsize > oldsize) { |
c4ed4243 CH |
763 | /* |
764 | * Do the first part of growing a file: zero any data in the | |
765 | * last block that is beyond the old EOF. We need to do this | |
766 | * before the inode is joined to the transaction to modify | |
767 | * i_size. | |
768 | */ | |
673e8e59 | 769 | error = xfs_zero_eof(ip, newsize, oldsize); |
c4ed4243 | 770 | if (error) |
76ca4c23 | 771 | return error; |
c4ed4243 | 772 | } |
c4ed4243 CH |
773 | |
774 | /* | |
775 | * We are going to log the inode size change in this transaction so | |
776 | * any previous writes that are beyond the on disk EOF and the new | |
777 | * EOF that have not been written out need to be written here. If we | |
778 | * do not write the data out, we expose ourselves to the null files | |
779 | * problem. | |
780 | * | |
781 | * Only flush from the on disk size to the smaller of the in memory | |
782 | * file size or the new size as that's the range we really care about | |
783 | * here and prevents waiting for other data not within the range we | |
784 | * care about here. | |
785 | */ | |
673e8e59 | 786 | if (oldsize != ip->i_d.di_size && newsize > ip->i_d.di_size) { |
4bc1ea6b DC |
787 | error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping, |
788 | ip->i_d.di_size, newsize); | |
c4ed4243 | 789 | if (error) |
76ca4c23 | 790 | return error; |
c4ed4243 CH |
791 | } |
792 | ||
793 | /* | |
4a06fd26 | 794 | * Wait for all direct I/O to complete. |
c4ed4243 | 795 | */ |
4a06fd26 | 796 | inode_dio_wait(inode); |
c4ed4243 | 797 | |
673e8e59 | 798 | error = -block_truncate_page(inode->i_mapping, newsize, xfs_get_blocks); |
c4ed4243 | 799 | if (error) |
76ca4c23 | 800 | return error; |
c4ed4243 CH |
801 | |
802 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE); | |
3d3c8b52 | 803 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0); |
c4ed4243 CH |
804 | if (error) |
805 | goto out_trans_cancel; | |
806 | ||
673e8e59 | 807 | truncate_setsize(inode, newsize); |
c4ed4243 CH |
808 | |
809 | commit_flags = XFS_TRANS_RELEASE_LOG_RES; | |
810 | lock_flags |= XFS_ILOCK_EXCL; | |
811 | ||
812 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
813 | ||
ddc3415a | 814 | xfs_trans_ijoin(tp, ip, 0); |
c4ed4243 CH |
815 | |
816 | /* | |
817 | * Only change the c/mtime if we are changing the size or we are | |
818 | * explicitly asked to change it. This handles the semantic difference | |
819 | * between truncate() and ftruncate() as implemented in the VFS. | |
820 | * | |
821 | * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a | |
822 | * special case where we need to update the times despite not having | |
823 | * these flags set. For all other operations the VFS set these flags | |
824 | * explicitly if it wants a timestamp update. | |
825 | */ | |
fe60a8a0 CH |
826 | if (newsize != oldsize && |
827 | !(iattr->ia_valid & (ATTR_CTIME | ATTR_MTIME))) { | |
c4ed4243 CH |
828 | iattr->ia_ctime = iattr->ia_mtime = |
829 | current_fs_time(inode->i_sb); | |
fe60a8a0 | 830 | iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME; |
c4ed4243 CH |
831 | } |
832 | ||
673e8e59 CH |
833 | /* |
834 | * The first thing we do is set the size to new_size permanently on | |
835 | * disk. This way we don't have to worry about anyone ever being able | |
836 | * to look at the data being freed even in the face of a crash. | |
837 | * What we're getting around here is the case where we free a block, it | |
838 | * is allocated to another file, it is written to, and then we crash. | |
839 | * If the new data gets written to the file but the log buffers | |
840 | * containing the free and reallocation don't, then we'd end up with | |
841 | * garbage in the blocks being freed. As long as we make the new size | |
842 | * permanent before actually freeing any blocks it doesn't matter if | |
843 | * they get written to. | |
844 | */ | |
845 | ip->i_d.di_size = newsize; | |
673e8e59 CH |
846 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
847 | ||
848 | if (newsize <= oldsize) { | |
849 | error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, newsize); | |
c4ed4243 CH |
850 | if (error) |
851 | goto out_trans_abort; | |
852 | ||
853 | /* | |
854 | * Truncated "down", so we're removing references to old data | |
855 | * here - if we delay flushing for a long time, we expose | |
856 | * ourselves unduly to the notorious NULL files problem. So, | |
857 | * we mark this inode and flush it when the file is closed, | |
858 | * and do not wait the usual (long) time for writeout. | |
859 | */ | |
860 | xfs_iflags_set(ip, XFS_ITRUNCATED); | |
27b52867 BF |
861 | |
862 | /* A truncate down always removes post-EOF blocks. */ | |
863 | xfs_inode_clear_eofblocks_tag(ip); | |
c4ed4243 CH |
864 | } |
865 | ||
fe60a8a0 | 866 | if (iattr->ia_valid & ATTR_MODE) |
0c3d88df | 867 | xfs_setattr_mode(ip, iattr); |
fe60a8a0 | 868 | if (iattr->ia_valid & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME)) |
c91c46c1 | 869 | xfs_setattr_time(ip, iattr); |
c4ed4243 CH |
870 | |
871 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
872 | ||
873 | XFS_STATS_INC(xs_ig_attrchg); | |
874 | ||
875 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
876 | xfs_trans_set_sync(tp); | |
877 | ||
878 | error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); | |
879 | out_unlock: | |
880 | if (lock_flags) | |
881 | xfs_iunlock(ip, lock_flags); | |
882 | return error; | |
883 | ||
884 | out_trans_abort: | |
885 | commit_flags |= XFS_TRANS_ABORT; | |
886 | out_trans_cancel: | |
887 | xfs_trans_cancel(tp, commit_flags); | |
888 | goto out_unlock; | |
889 | } | |
890 | ||
1da177e4 | 891 | STATIC int |
416c6d5b | 892 | xfs_vn_setattr( |
76ca4c23 CH |
893 | struct dentry *dentry, |
894 | struct iattr *iattr) | |
1da177e4 | 895 | { |
76ca4c23 CH |
896 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
897 | int error; | |
898 | ||
899 | if (iattr->ia_valid & ATTR_SIZE) { | |
900 | xfs_ilock(ip, XFS_IOLOCK_EXCL); | |
901 | error = xfs_setattr_size(ip, iattr); | |
902 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); | |
903 | } else { | |
904 | error = xfs_setattr_nonsize(ip, iattr, 0); | |
905 | } | |
906 | ||
907 | return -error; | |
1da177e4 LT |
908 | } |
909 | ||
69ff2826 CH |
910 | STATIC int |
911 | xfs_vn_update_time( | |
912 | struct inode *inode, | |
913 | struct timespec *now, | |
914 | int flags) | |
915 | { | |
916 | struct xfs_inode *ip = XFS_I(inode); | |
917 | struct xfs_mount *mp = ip->i_mount; | |
918 | struct xfs_trans *tp; | |
919 | int error; | |
920 | ||
921 | trace_xfs_update_time(ip); | |
922 | ||
923 | tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); | |
3d3c8b52 | 924 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0); |
69ff2826 CH |
925 | if (error) { |
926 | xfs_trans_cancel(tp, 0); | |
927 | return -error; | |
928 | } | |
929 | ||
930 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
931 | if (flags & S_CTIME) { | |
932 | inode->i_ctime = *now; | |
933 | ip->i_d.di_ctime.t_sec = (__int32_t)now->tv_sec; | |
934 | ip->i_d.di_ctime.t_nsec = (__int32_t)now->tv_nsec; | |
935 | } | |
936 | if (flags & S_MTIME) { | |
937 | inode->i_mtime = *now; | |
938 | ip->i_d.di_mtime.t_sec = (__int32_t)now->tv_sec; | |
939 | ip->i_d.di_mtime.t_nsec = (__int32_t)now->tv_nsec; | |
940 | } | |
941 | if (flags & S_ATIME) { | |
942 | inode->i_atime = *now; | |
943 | ip->i_d.di_atime.t_sec = (__int32_t)now->tv_sec; | |
944 | ip->i_d.di_atime.t_nsec = (__int32_t)now->tv_nsec; | |
945 | } | |
946 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
947 | xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP); | |
948 | return -xfs_trans_commit(tp, 0); | |
949 | } | |
950 | ||
f35642e2 ES |
951 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
952 | ||
953 | /* | |
954 | * Call fiemap helper to fill in user data. | |
955 | * Returns positive errors to xfs_getbmap. | |
956 | */ | |
957 | STATIC int | |
958 | xfs_fiemap_format( | |
959 | void **arg, | |
960 | struct getbmapx *bmv, | |
961 | int *full) | |
962 | { | |
963 | int error; | |
964 | struct fiemap_extent_info *fieinfo = *arg; | |
965 | u32 fiemap_flags = 0; | |
966 | u64 logical, physical, length; | |
967 | ||
968 | /* Do nothing for a hole */ | |
969 | if (bmv->bmv_block == -1LL) | |
970 | return 0; | |
971 | ||
972 | logical = BBTOB(bmv->bmv_offset); | |
973 | physical = BBTOB(bmv->bmv_block); | |
974 | length = BBTOB(bmv->bmv_length); | |
975 | ||
976 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) | |
977 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; | |
978 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { | |
635c4d0b JL |
979 | fiemap_flags |= (FIEMAP_EXTENT_DELALLOC | |
980 | FIEMAP_EXTENT_UNKNOWN); | |
f35642e2 ES |
981 | physical = 0; /* no block yet */ |
982 | } | |
983 | if (bmv->bmv_oflags & BMV_OF_LAST) | |
984 | fiemap_flags |= FIEMAP_EXTENT_LAST; | |
985 | ||
986 | error = fiemap_fill_next_extent(fieinfo, logical, physical, | |
987 | length, fiemap_flags); | |
988 | if (error > 0) { | |
989 | error = 0; | |
990 | *full = 1; /* user array now full */ | |
991 | } | |
992 | ||
993 | return -error; | |
994 | } | |
995 | ||
996 | STATIC int | |
997 | xfs_vn_fiemap( | |
998 | struct inode *inode, | |
999 | struct fiemap_extent_info *fieinfo, | |
1000 | u64 start, | |
1001 | u64 length) | |
1002 | { | |
1003 | xfs_inode_t *ip = XFS_I(inode); | |
1004 | struct getbmapx bm; | |
1005 | int error; | |
1006 | ||
1007 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); | |
1008 | if (error) | |
1009 | return error; | |
1010 | ||
1011 | /* Set up bmap header for xfs internal routine */ | |
1012 | bm.bmv_offset = BTOBB(start); | |
1013 | /* Special case for whole file */ | |
1014 | if (length == FIEMAP_MAX_OFFSET) | |
1015 | bm.bmv_length = -1LL; | |
1016 | else | |
1017 | bm.bmv_length = BTOBB(length); | |
1018 | ||
97db39a1 | 1019 | /* We add one because in getbmap world count includes the header */ |
2d1ff3c7 TM |
1020 | bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM : |
1021 | fieinfo->fi_extents_max + 1; | |
1022 | bm.bmv_count = min_t(__s32, bm.bmv_count, | |
1023 | (PAGE_SIZE * 16 / sizeof(struct getbmapx))); | |
9af25465 | 1024 | bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; |
f35642e2 ES |
1025 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) |
1026 | bm.bmv_iflags |= BMV_IF_ATTRFORK; | |
1027 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) | |
1028 | bm.bmv_iflags |= BMV_IF_DELALLOC; | |
1029 | ||
1030 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); | |
1031 | if (error) | |
1032 | return -error; | |
1033 | ||
1034 | return 0; | |
1035 | } | |
1036 | ||
41be8bed | 1037 | static const struct inode_operations xfs_inode_operations = { |
4e34e719 | 1038 | .get_acl = xfs_get_acl, |
2401dc29 | 1039 | .set_acl = xfs_set_acl, |
416c6d5b NS |
1040 | .getattr = xfs_vn_getattr, |
1041 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1042 | .setxattr = generic_setxattr, |
1043 | .getxattr = generic_getxattr, | |
1044 | .removexattr = generic_removexattr, | |
416c6d5b | 1045 | .listxattr = xfs_vn_listxattr, |
f35642e2 | 1046 | .fiemap = xfs_vn_fiemap, |
69ff2826 | 1047 | .update_time = xfs_vn_update_time, |
1da177e4 LT |
1048 | }; |
1049 | ||
41be8bed | 1050 | static const struct inode_operations xfs_dir_inode_operations = { |
416c6d5b NS |
1051 | .create = xfs_vn_create, |
1052 | .lookup = xfs_vn_lookup, | |
1053 | .link = xfs_vn_link, | |
1054 | .unlink = xfs_vn_unlink, | |
1055 | .symlink = xfs_vn_symlink, | |
1056 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
1057 | /* |
1058 | * Yes, XFS uses the same method for rmdir and unlink. | |
1059 | * | |
1060 | * There are some subtile differences deeper in the code, | |
1061 | * but we use S_ISDIR to check for those. | |
1062 | */ | |
1063 | .rmdir = xfs_vn_unlink, | |
416c6d5b NS |
1064 | .mknod = xfs_vn_mknod, |
1065 | .rename = xfs_vn_rename, | |
4e34e719 | 1066 | .get_acl = xfs_get_acl, |
2401dc29 | 1067 | .set_acl = xfs_set_acl, |
416c6d5b NS |
1068 | .getattr = xfs_vn_getattr, |
1069 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1070 | .setxattr = generic_setxattr, |
1071 | .getxattr = generic_getxattr, | |
1072 | .removexattr = generic_removexattr, | |
416c6d5b | 1073 | .listxattr = xfs_vn_listxattr, |
69ff2826 | 1074 | .update_time = xfs_vn_update_time, |
1da177e4 LT |
1075 | }; |
1076 | ||
41be8bed | 1077 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
384f3ced BN |
1078 | .create = xfs_vn_create, |
1079 | .lookup = xfs_vn_ci_lookup, | |
1080 | .link = xfs_vn_link, | |
1081 | .unlink = xfs_vn_unlink, | |
1082 | .symlink = xfs_vn_symlink, | |
1083 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
1084 | /* |
1085 | * Yes, XFS uses the same method for rmdir and unlink. | |
1086 | * | |
1087 | * There are some subtile differences deeper in the code, | |
1088 | * but we use S_ISDIR to check for those. | |
1089 | */ | |
1090 | .rmdir = xfs_vn_unlink, | |
384f3ced BN |
1091 | .mknod = xfs_vn_mknod, |
1092 | .rename = xfs_vn_rename, | |
4e34e719 | 1093 | .get_acl = xfs_get_acl, |
2401dc29 | 1094 | .set_acl = xfs_set_acl, |
384f3ced BN |
1095 | .getattr = xfs_vn_getattr, |
1096 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1097 | .setxattr = generic_setxattr, |
1098 | .getxattr = generic_getxattr, | |
1099 | .removexattr = generic_removexattr, | |
384f3ced | 1100 | .listxattr = xfs_vn_listxattr, |
69ff2826 | 1101 | .update_time = xfs_vn_update_time, |
384f3ced BN |
1102 | }; |
1103 | ||
41be8bed | 1104 | static const struct inode_operations xfs_symlink_inode_operations = { |
1da177e4 | 1105 | .readlink = generic_readlink, |
416c6d5b | 1106 | .follow_link = xfs_vn_follow_link, |
96c8c442 | 1107 | .put_link = kfree_put_link, |
416c6d5b NS |
1108 | .getattr = xfs_vn_getattr, |
1109 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1110 | .setxattr = generic_setxattr, |
1111 | .getxattr = generic_getxattr, | |
1112 | .removexattr = generic_removexattr, | |
416c6d5b | 1113 | .listxattr = xfs_vn_listxattr, |
69ff2826 | 1114 | .update_time = xfs_vn_update_time, |
1da177e4 | 1115 | }; |
41be8bed CH |
1116 | |
1117 | STATIC void | |
1118 | xfs_diflags_to_iflags( | |
1119 | struct inode *inode, | |
1120 | struct xfs_inode *ip) | |
1121 | { | |
1122 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
1123 | inode->i_flags |= S_IMMUTABLE; | |
1124 | else | |
1125 | inode->i_flags &= ~S_IMMUTABLE; | |
1126 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
1127 | inode->i_flags |= S_APPEND; | |
1128 | else | |
1129 | inode->i_flags &= ~S_APPEND; | |
1130 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
1131 | inode->i_flags |= S_SYNC; | |
1132 | else | |
1133 | inode->i_flags &= ~S_SYNC; | |
1134 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
1135 | inode->i_flags |= S_NOATIME; | |
1136 | else | |
1137 | inode->i_flags &= ~S_NOATIME; | |
1138 | } | |
1139 | ||
1140 | /* | |
1141 | * Initialize the Linux inode, set up the operation vectors and | |
1142 | * unlock the inode. | |
1143 | * | |
1144 | * When reading existing inodes from disk this is called directly | |
1145 | * from xfs_iget, when creating a new inode it is called from | |
1146 | * xfs_ialloc after setting up the inode. | |
bf904248 DC |
1147 | * |
1148 | * We are always called with an uninitialised linux inode here. | |
1149 | * We need to initialise the necessary fields and take a reference | |
1150 | * on it. | |
41be8bed CH |
1151 | */ |
1152 | void | |
1153 | xfs_setup_inode( | |
1154 | struct xfs_inode *ip) | |
1155 | { | |
bf904248 | 1156 | struct inode *inode = &ip->i_vnode; |
ad22c7a0 | 1157 | gfp_t gfp_mask; |
bf904248 DC |
1158 | |
1159 | inode->i_ino = ip->i_ino; | |
eaff8079 | 1160 | inode->i_state = I_NEW; |
646ec461 CH |
1161 | |
1162 | inode_sb_list_add(inode); | |
c6f6cd06 CH |
1163 | /* make the inode look hashed for the writeback code */ |
1164 | hlist_add_fake(&inode->i_hash); | |
41be8bed CH |
1165 | |
1166 | inode->i_mode = ip->i_d.di_mode; | |
bfe86848 | 1167 | set_nlink(inode, ip->i_d.di_nlink); |
7aab1b28 DE |
1168 | inode->i_uid = xfs_uid_to_kuid(ip->i_d.di_uid); |
1169 | inode->i_gid = xfs_gid_to_kgid(ip->i_d.di_gid); | |
41be8bed CH |
1170 | |
1171 | switch (inode->i_mode & S_IFMT) { | |
1172 | case S_IFBLK: | |
1173 | case S_IFCHR: | |
1174 | inode->i_rdev = | |
1175 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
1176 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
1177 | break; | |
1178 | default: | |
1179 | inode->i_rdev = 0; | |
1180 | break; | |
1181 | } | |
1182 | ||
1183 | inode->i_generation = ip->i_d.di_gen; | |
1184 | i_size_write(inode, ip->i_d.di_size); | |
1185 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
1186 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
1187 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
1188 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
1189 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
1190 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
1191 | xfs_diflags_to_iflags(inode, ip); | |
41be8bed | 1192 | |
4bceb18f | 1193 | ip->d_ops = ip->i_mount->m_nondir_inode_ops; |
41be8bed CH |
1194 | switch (inode->i_mode & S_IFMT) { |
1195 | case S_IFREG: | |
1196 | inode->i_op = &xfs_inode_operations; | |
1197 | inode->i_fop = &xfs_file_operations; | |
1198 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
1199 | break; | |
1200 | case S_IFDIR: | |
1201 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) | |
1202 | inode->i_op = &xfs_dir_ci_inode_operations; | |
1203 | else | |
1204 | inode->i_op = &xfs_dir_inode_operations; | |
1205 | inode->i_fop = &xfs_dir_file_operations; | |
32c5483a | 1206 | ip->d_ops = ip->i_mount->m_dir_inode_ops; |
41be8bed CH |
1207 | break; |
1208 | case S_IFLNK: | |
1209 | inode->i_op = &xfs_symlink_inode_operations; | |
1210 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) | |
1211 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
1212 | break; | |
1213 | default: | |
1214 | inode->i_op = &xfs_inode_operations; | |
1215 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
1216 | break; | |
1217 | } | |
1218 | ||
ad22c7a0 DC |
1219 | /* |
1220 | * Ensure all page cache allocations are done from GFP_NOFS context to | |
1221 | * prevent direct reclaim recursion back into the filesystem and blowing | |
1222 | * stacks or deadlocking. | |
1223 | */ | |
1224 | gfp_mask = mapping_gfp_mask(inode->i_mapping); | |
1225 | mapping_set_gfp_mask(inode->i_mapping, (gfp_mask & ~(__GFP_FS))); | |
1226 | ||
510792ee CH |
1227 | /* |
1228 | * If there is no attribute fork no ACL can exist on this inode, | |
1229 | * and it can't have any file capabilities attached to it either. | |
1230 | */ | |
1231 | if (!XFS_IFORK_Q(ip)) { | |
1232 | inode_has_no_xattr(inode); | |
6311b108 | 1233 | cache_no_acl(inode); |
510792ee | 1234 | } |
6311b108 | 1235 | |
41be8bed CH |
1236 | xfs_iflags_clear(ip, XFS_INEW); |
1237 | barrier(); | |
1238 | ||
1239 | unlock_new_inode(inode); | |
1240 | } |