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Commit | Line | Data |
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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 | 18 | #include "xfs.h" |
1da177e4 | 19 | #include "xfs_fs.h" |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_mount.h" | |
1da177e4 | 30 | #include "xfs_bmap_btree.h" |
a844f451 | 31 | #include "xfs_alloc_btree.h" |
1da177e4 | 32 | #include "xfs_ialloc_btree.h" |
a844f451 | 33 | #include "xfs_attr_sf.h" |
1da177e4 LT |
34 | #include "xfs_dir2_sf.h" |
35 | #include "xfs_dinode.h" | |
36 | #include "xfs_inode.h" | |
7bf446f8 | 37 | #include "xfs_ioctl.h" |
a844f451 NS |
38 | #include "xfs_btree.h" |
39 | #include "xfs_ialloc.h" | |
1da177e4 | 40 | #include "xfs_rtalloc.h" |
1da177e4 | 41 | #include "xfs_itable.h" |
a844f451 | 42 | #include "xfs_error.h" |
1da177e4 LT |
43 | #include "xfs_rw.h" |
44 | #include "xfs_acl.h" | |
1da177e4 | 45 | #include "xfs_attr.h" |
a844f451 | 46 | #include "xfs_bmap.h" |
1da177e4 LT |
47 | #include "xfs_buf_item.h" |
48 | #include "xfs_utils.h" | |
49 | #include "xfs_dfrag.h" | |
50 | #include "xfs_fsops.h" | |
993386c1 | 51 | #include "xfs_vnodeops.h" |
25fe55e8 CH |
52 | #include "xfs_quota.h" |
53 | #include "xfs_inode_item.h" | |
d296d30a | 54 | #include "xfs_export.h" |
1da177e4 | 55 | |
16f7e0fe | 56 | #include <linux/capability.h> |
1da177e4 LT |
57 | #include <linux/dcache.h> |
58 | #include <linux/mount.h> | |
59 | #include <linux/namei.h> | |
60 | #include <linux/pagemap.h> | |
d296d30a | 61 | #include <linux/exportfs.h> |
1da177e4 LT |
62 | |
63 | /* | |
64 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
65 | * a file or fs handle. | |
66 | * | |
67 | * XFS_IOC_PATH_TO_FSHANDLE | |
68 | * returns fs handle for a mount point or path within that mount point | |
69 | * XFS_IOC_FD_TO_HANDLE | |
70 | * returns full handle for a FD opened in user space | |
71 | * XFS_IOC_PATH_TO_HANDLE | |
72 | * returns full handle for a path | |
73 | */ | |
d5547f9f | 74 | int |
1da177e4 LT |
75 | xfs_find_handle( |
76 | unsigned int cmd, | |
743bb465 | 77 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
78 | { |
79 | int hsize; | |
80 | xfs_handle_t handle; | |
1da177e4 | 81 | struct inode *inode; |
4346cdd4 CH |
82 | struct file *file = NULL; |
83 | struct path path; | |
84 | int error; | |
85 | struct xfs_inode *ip; | |
1da177e4 | 86 | |
4346cdd4 | 87 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
743bb465 | 88 | file = fget(hreq->fd); |
1da177e4 | 89 | if (!file) |
4346cdd4 CH |
90 | return -EBADF; |
91 | inode = file->f_path.dentry->d_inode; | |
92 | } else { | |
93 | error = user_lpath((const char __user *)hreq->path, &path); | |
94 | if (error) | |
95 | return error; | |
96 | inode = path.dentry->d_inode; | |
1da177e4 | 97 | } |
4346cdd4 CH |
98 | ip = XFS_I(inode); |
99 | ||
100 | /* | |
101 | * We can only generate handles for inodes residing on a XFS filesystem, | |
102 | * and only for regular files, directories or symbolic links. | |
103 | */ | |
104 | error = -EINVAL; | |
105 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
106 | goto out_put; | |
107 | ||
108 | error = -EBADF; | |
109 | if (!S_ISREG(inode->i_mode) && | |
110 | !S_ISDIR(inode->i_mode) && | |
111 | !S_ISLNK(inode->i_mode)) | |
112 | goto out_put; | |
113 | ||
114 | ||
115 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
116 | ||
117 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
118 | /* | |
119 | * This handle only contains an fsid, zero the rest. | |
120 | */ | |
121 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
122 | hsize = sizeof(xfs_fsid_t); | |
123 | } else { | |
1da177e4 LT |
124 | int lock_mode; |
125 | ||
1da177e4 | 126 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
127 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
128 | sizeof(handle.ha_fid.fid_len); | |
129 | handle.ha_fid.fid_pad = 0; | |
130 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
131 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
132 | xfs_iunlock_map_shared(ip, lock_mode); |
133 | ||
134 | hsize = XFS_HSIZE(handle); | |
135 | } | |
136 | ||
4346cdd4 | 137 | error = -EFAULT; |
743bb465 | 138 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
139 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
140 | goto out_put; | |
1da177e4 | 141 | |
4346cdd4 CH |
142 | error = 0; |
143 | ||
144 | out_put: | |
145 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
146 | fput(file); | |
147 | else | |
148 | path_put(&path); | |
149 | return error; | |
1da177e4 LT |
150 | } |
151 | ||
1da177e4 | 152 | /* |
d296d30a CH |
153 | * No need to do permission checks on the various pathname components |
154 | * as the handle operations are privileged. | |
1da177e4 LT |
155 | */ |
156 | STATIC int | |
d296d30a CH |
157 | xfs_handle_acceptable( |
158 | void *context, | |
159 | struct dentry *dentry) | |
160 | { | |
161 | return 1; | |
162 | } | |
163 | ||
164 | /* | |
165 | * Convert userspace handle data into a dentry. | |
166 | */ | |
167 | struct dentry * | |
168 | xfs_handle_to_dentry( | |
169 | struct file *parfilp, | |
170 | void __user *uhandle, | |
171 | u32 hlen) | |
1da177e4 | 172 | { |
1da177e4 | 173 | xfs_handle_t handle; |
d296d30a | 174 | struct xfs_fid64 fid; |
1da177e4 LT |
175 | |
176 | /* | |
177 | * Only allow handle opens under a directory. | |
178 | */ | |
d296d30a CH |
179 | if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) |
180 | return ERR_PTR(-ENOTDIR); | |
181 | ||
182 | if (hlen != sizeof(xfs_handle_t)) | |
183 | return ERR_PTR(-EINVAL); | |
184 | if (copy_from_user(&handle, uhandle, hlen)) | |
185 | return ERR_PTR(-EFAULT); | |
186 | if (handle.ha_fid.fid_len != | |
187 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
188 | return ERR_PTR(-EINVAL); | |
189 | ||
190 | memset(&fid, 0, sizeof(struct fid)); | |
191 | fid.ino = handle.ha_fid.fid_ino; | |
192 | fid.gen = handle.ha_fid.fid_gen; | |
193 | ||
194 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
195 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
196 | xfs_handle_acceptable, NULL); | |
197 | } | |
1da177e4 | 198 | |
d296d30a CH |
199 | STATIC struct dentry * |
200 | xfs_handlereq_to_dentry( | |
201 | struct file *parfilp, | |
202 | xfs_fsop_handlereq_t *hreq) | |
203 | { | |
204 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
205 | } |
206 | ||
d5547f9f | 207 | int |
1da177e4 | 208 | xfs_open_by_handle( |
1da177e4 | 209 | struct file *parfilp, |
d296d30a | 210 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 211 | { |
745ca247 | 212 | const struct cred *cred = current_cred(); |
1da177e4 | 213 | int error; |
d296d30a | 214 | int fd; |
1da177e4 LT |
215 | int permflag; |
216 | struct file *filp; | |
217 | struct inode *inode; | |
218 | struct dentry *dentry; | |
1da177e4 LT |
219 | |
220 | if (!capable(CAP_SYS_ADMIN)) | |
221 | return -XFS_ERROR(EPERM); | |
1da177e4 | 222 | |
d296d30a CH |
223 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
224 | if (IS_ERR(dentry)) | |
225 | return PTR_ERR(dentry); | |
226 | inode = dentry->d_inode; | |
1da177e4 LT |
227 | |
228 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
229 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
230 | error = -XFS_ERROR(EPERM); |
231 | goto out_dput; | |
1da177e4 LT |
232 | } |
233 | ||
234 | #if BITS_PER_LONG != 32 | |
743bb465 | 235 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 236 | #endif |
d296d30a | 237 | |
1da177e4 | 238 | /* Put open permission in namei format. */ |
743bb465 | 239 | permflag = hreq->oflags; |
1da177e4 LT |
240 | if ((permflag+1) & O_ACCMODE) |
241 | permflag++; | |
242 | if (permflag & O_TRUNC) | |
243 | permflag |= 2; | |
244 | ||
245 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
246 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
d296d30a CH |
247 | error = -XFS_ERROR(EPERM); |
248 | goto out_dput; | |
1da177e4 LT |
249 | } |
250 | ||
251 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
d296d30a CH |
252 | error = -XFS_ERROR(EACCES); |
253 | goto out_dput; | |
1da177e4 LT |
254 | } |
255 | ||
256 | /* Can't write directories. */ | |
d296d30a CH |
257 | if (S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { |
258 | error = -XFS_ERROR(EISDIR); | |
259 | goto out_dput; | |
1da177e4 LT |
260 | } |
261 | ||
d296d30a CH |
262 | fd = get_unused_fd(); |
263 | if (fd < 0) { | |
264 | error = fd; | |
265 | goto out_dput; | |
1da177e4 LT |
266 | } |
267 | ||
d296d30a CH |
268 | filp = dentry_open(dentry, mntget(parfilp->f_path.mnt), |
269 | hreq->oflags, cred); | |
1da177e4 | 270 | if (IS_ERR(filp)) { |
d296d30a CH |
271 | put_unused_fd(fd); |
272 | return PTR_ERR(filp); | |
1da177e4 | 273 | } |
4d4be482 | 274 | |
2e2e7bb1 | 275 | if (inode->i_mode & S_IFREG) { |
2e2e7bb1 | 276 | filp->f_flags |= O_NOATIME; |
4d4be482 | 277 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 278 | } |
1da177e4 | 279 | |
d296d30a CH |
280 | fd_install(fd, filp); |
281 | return fd; | |
282 | ||
283 | out_dput: | |
284 | dput(dentry); | |
285 | return error; | |
1da177e4 LT |
286 | } |
287 | ||
804c83c3 CH |
288 | /* |
289 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
290 | * unused first argument. | |
291 | */ | |
292 | STATIC int | |
293 | do_readlink( | |
294 | char __user *buffer, | |
295 | int buflen, | |
296 | const char *link) | |
297 | { | |
298 | int len; | |
299 | ||
300 | len = PTR_ERR(link); | |
301 | if (IS_ERR(link)) | |
302 | goto out; | |
303 | ||
304 | len = strlen(link); | |
305 | if (len > (unsigned) buflen) | |
306 | len = buflen; | |
307 | if (copy_to_user(buffer, link, len)) | |
308 | len = -EFAULT; | |
309 | out: | |
310 | return len; | |
311 | } | |
312 | ||
313 | ||
d5547f9f | 314 | int |
1da177e4 | 315 | xfs_readlink_by_handle( |
d296d30a CH |
316 | struct file *parfilp, |
317 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 318 | { |
d296d30a | 319 | struct dentry *dentry; |
1da177e4 | 320 | __u32 olen; |
804c83c3 CH |
321 | void *link; |
322 | int error; | |
1da177e4 LT |
323 | |
324 | if (!capable(CAP_SYS_ADMIN)) | |
325 | return -XFS_ERROR(EPERM); | |
1da177e4 | 326 | |
d296d30a CH |
327 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
328 | if (IS_ERR(dentry)) | |
329 | return PTR_ERR(dentry); | |
1da177e4 LT |
330 | |
331 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 332 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 333 | error = -XFS_ERROR(EINVAL); |
d296d30a | 334 | goto out_dput; |
1da177e4 LT |
335 | } |
336 | ||
743bb465 | 337 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 338 | error = -XFS_ERROR(EFAULT); |
d296d30a | 339 | goto out_dput; |
1da177e4 | 340 | } |
1da177e4 | 341 | |
804c83c3 | 342 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
343 | if (!link) { |
344 | error = -XFS_ERROR(ENOMEM); | |
345 | goto out_dput; | |
346 | } | |
1da177e4 | 347 | |
d296d30a | 348 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 349 | if (error) |
804c83c3 | 350 | goto out_kfree; |
743bb465 | 351 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
352 | if (error) |
353 | goto out_kfree; | |
67fcaa73 | 354 | |
804c83c3 CH |
355 | out_kfree: |
356 | kfree(link); | |
d296d30a CH |
357 | out_dput: |
358 | dput(dentry); | |
804c83c3 | 359 | return error; |
1da177e4 LT |
360 | } |
361 | ||
362 | STATIC int | |
363 | xfs_fssetdm_by_handle( | |
d296d30a CH |
364 | struct file *parfilp, |
365 | void __user *arg) | |
1da177e4 LT |
366 | { |
367 | int error; | |
368 | struct fsdmidata fsd; | |
369 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 370 | struct dentry *dentry; |
1da177e4 LT |
371 | |
372 | if (!capable(CAP_MKNOD)) | |
373 | return -XFS_ERROR(EPERM); | |
374 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
375 | return -XFS_ERROR(EFAULT); | |
376 | ||
d296d30a CH |
377 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
378 | if (IS_ERR(dentry)) | |
379 | return PTR_ERR(dentry); | |
1da177e4 | 380 | |
d296d30a | 381 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
382 | error = -XFS_ERROR(EPERM); |
383 | goto out; | |
1da177e4 LT |
384 | } |
385 | ||
386 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
387 | error = -XFS_ERROR(EFAULT); |
388 | goto out; | |
1da177e4 LT |
389 | } |
390 | ||
d296d30a | 391 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 392 | fsd.fsd_dmstate); |
1da177e4 | 393 | |
6e7f75ea | 394 | out: |
d296d30a | 395 | dput(dentry); |
6e7f75ea | 396 | return error; |
1da177e4 LT |
397 | } |
398 | ||
399 | STATIC int | |
400 | xfs_attrlist_by_handle( | |
d296d30a CH |
401 | struct file *parfilp, |
402 | void __user *arg) | |
1da177e4 | 403 | { |
d296d30a | 404 | int error = -ENOMEM; |
1da177e4 LT |
405 | attrlist_cursor_kern_t *cursor; |
406 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 407 | struct dentry *dentry; |
1da177e4 LT |
408 | char *kbuf; |
409 | ||
410 | if (!capable(CAP_SYS_ADMIN)) | |
411 | return -XFS_ERROR(EPERM); | |
412 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
413 | return -XFS_ERROR(EFAULT); | |
414 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
415 | return -XFS_ERROR(EINVAL); | |
416 | ||
90ad58a8 CH |
417 | /* |
418 | * Reject flags, only allow namespaces. | |
419 | */ | |
420 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
421 | return -XFS_ERROR(EINVAL); | |
422 | ||
d296d30a CH |
423 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
424 | if (IS_ERR(dentry)) | |
425 | return PTR_ERR(dentry); | |
1da177e4 LT |
426 | |
427 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
428 | if (!kbuf) | |
d296d30a | 429 | goto out_dput; |
1da177e4 LT |
430 | |
431 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 432 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 433 | al_hreq.flags, cursor); |
1da177e4 LT |
434 | if (error) |
435 | goto out_kfree; | |
436 | ||
437 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
438 | error = -EFAULT; | |
439 | ||
440 | out_kfree: | |
441 | kfree(kbuf); | |
d296d30a CH |
442 | out_dput: |
443 | dput(dentry); | |
444 | return error; | |
1da177e4 LT |
445 | } |
446 | ||
28750975 | 447 | int |
1da177e4 | 448 | xfs_attrmulti_attr_get( |
739bfb2a | 449 | struct inode *inode, |
1da177e4 LT |
450 | char *name, |
451 | char __user *ubuf, | |
452 | __uint32_t *len, | |
453 | __uint32_t flags) | |
454 | { | |
455 | char *kbuf; | |
456 | int error = EFAULT; | |
e8b0ebaa | 457 | |
1da177e4 LT |
458 | if (*len > XATTR_SIZE_MAX) |
459 | return EINVAL; | |
460 | kbuf = kmalloc(*len, GFP_KERNEL); | |
461 | if (!kbuf) | |
462 | return ENOMEM; | |
463 | ||
e8b0ebaa | 464 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
465 | if (error) |
466 | goto out_kfree; | |
467 | ||
468 | if (copy_to_user(ubuf, kbuf, *len)) | |
469 | error = EFAULT; | |
470 | ||
471 | out_kfree: | |
472 | kfree(kbuf); | |
473 | return error; | |
474 | } | |
475 | ||
28750975 | 476 | int |
1da177e4 | 477 | xfs_attrmulti_attr_set( |
739bfb2a | 478 | struct inode *inode, |
1da177e4 LT |
479 | char *name, |
480 | const char __user *ubuf, | |
481 | __uint32_t len, | |
482 | __uint32_t flags) | |
483 | { | |
484 | char *kbuf; | |
485 | int error = EFAULT; | |
486 | ||
739bfb2a | 487 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
488 | return EPERM; |
489 | if (len > XATTR_SIZE_MAX) | |
490 | return EINVAL; | |
491 | ||
492 | kbuf = kmalloc(len, GFP_KERNEL); | |
493 | if (!kbuf) | |
494 | return ENOMEM; | |
495 | ||
496 | if (copy_from_user(kbuf, ubuf, len)) | |
497 | goto out_kfree; | |
e8b0ebaa | 498 | |
739bfb2a | 499 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 LT |
500 | |
501 | out_kfree: | |
502 | kfree(kbuf); | |
503 | return error; | |
504 | } | |
505 | ||
28750975 | 506 | int |
1da177e4 | 507 | xfs_attrmulti_attr_remove( |
739bfb2a | 508 | struct inode *inode, |
1da177e4 LT |
509 | char *name, |
510 | __uint32_t flags) | |
511 | { | |
739bfb2a | 512 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 513 | return EPERM; |
739bfb2a | 514 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
515 | } |
516 | ||
517 | STATIC int | |
518 | xfs_attrmulti_by_handle( | |
42a74f20 | 519 | struct file *parfilp, |
d296d30a | 520 | void __user *arg) |
1da177e4 LT |
521 | { |
522 | int error; | |
523 | xfs_attr_multiop_t *ops; | |
524 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 525 | struct dentry *dentry; |
1da177e4 LT |
526 | unsigned int i, size; |
527 | char *attr_name; | |
528 | ||
529 | if (!capable(CAP_SYS_ADMIN)) | |
530 | return -XFS_ERROR(EPERM); | |
531 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
532 | return -XFS_ERROR(EFAULT); | |
533 | ||
d296d30a CH |
534 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
535 | if (IS_ERR(dentry)) | |
536 | return PTR_ERR(dentry); | |
1da177e4 LT |
537 | |
538 | error = E2BIG; | |
e182f57a | 539 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 540 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 541 | goto out_dput; |
1da177e4 LT |
542 | |
543 | error = ENOMEM; | |
544 | ops = kmalloc(size, GFP_KERNEL); | |
545 | if (!ops) | |
d296d30a | 546 | goto out_dput; |
1da177e4 LT |
547 | |
548 | error = EFAULT; | |
549 | if (copy_from_user(ops, am_hreq.ops, size)) | |
550 | goto out_kfree_ops; | |
551 | ||
552 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
553 | if (!attr_name) | |
554 | goto out_kfree_ops; | |
555 | ||
556 | ||
557 | error = 0; | |
558 | for (i = 0; i < am_hreq.opcount; i++) { | |
559 | ops[i].am_error = strncpy_from_user(attr_name, | |
560 | ops[i].am_attrname, MAXNAMELEN); | |
561 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
562 | error = -ERANGE; | |
563 | if (ops[i].am_error < 0) | |
564 | break; | |
565 | ||
566 | switch (ops[i].am_opcode) { | |
567 | case ATTR_OP_GET: | |
d296d30a CH |
568 | ops[i].am_error = xfs_attrmulti_attr_get( |
569 | dentry->d_inode, attr_name, | |
570 | ops[i].am_attrvalue, &ops[i].am_length, | |
571 | ops[i].am_flags); | |
1da177e4 LT |
572 | break; |
573 | case ATTR_OP_SET: | |
42a74f20 DH |
574 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
575 | if (ops[i].am_error) | |
576 | break; | |
d296d30a CH |
577 | ops[i].am_error = xfs_attrmulti_attr_set( |
578 | dentry->d_inode, attr_name, | |
579 | ops[i].am_attrvalue, ops[i].am_length, | |
580 | ops[i].am_flags); | |
42a74f20 | 581 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
582 | break; |
583 | case ATTR_OP_REMOVE: | |
42a74f20 DH |
584 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
585 | if (ops[i].am_error) | |
586 | break; | |
d296d30a CH |
587 | ops[i].am_error = xfs_attrmulti_attr_remove( |
588 | dentry->d_inode, attr_name, | |
589 | ops[i].am_flags); | |
42a74f20 | 590 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
591 | break; |
592 | default: | |
593 | ops[i].am_error = EINVAL; | |
594 | } | |
595 | } | |
596 | ||
597 | if (copy_to_user(am_hreq.ops, ops, size)) | |
598 | error = XFS_ERROR(EFAULT); | |
599 | ||
600 | kfree(attr_name); | |
601 | out_kfree_ops: | |
602 | kfree(ops); | |
d296d30a CH |
603 | out_dput: |
604 | dput(dentry); | |
1da177e4 LT |
605 | return -error; |
606 | } | |
607 | ||
d5547f9f | 608 | int |
1da177e4 | 609 | xfs_ioc_space( |
993386c1 | 610 | struct xfs_inode *ip, |
f37ea149 | 611 | struct inode *inode, |
1da177e4 LT |
612 | struct file *filp, |
613 | int ioflags, | |
614 | unsigned int cmd, | |
743bb465 | 615 | xfs_flock64_t *bf) |
1da177e4 | 616 | { |
1da177e4 LT |
617 | int attr_flags = 0; |
618 | int error; | |
619 | ||
743bb465 | 620 | /* |
621 | * Only allow the sys admin to reserve space unless | |
622 | * unwritten extents are enabled. | |
623 | */ | |
624 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
625 | !capable(CAP_SYS_ADMIN)) | |
626 | return -XFS_ERROR(EPERM); | |
627 | ||
f37ea149 | 628 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
629 | return -XFS_ERROR(EPERM); |
630 | ||
ad4a8ac4 | 631 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
632 | return -XFS_ERROR(EBADF); |
633 | ||
f37ea149 | 634 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
635 | return -XFS_ERROR(EINVAL); |
636 | ||
1da177e4 | 637 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 638 | attr_flags |= XFS_ATTR_NONBLOCK; |
1da177e4 | 639 | if (ioflags & IO_INVIS) |
0f285c8a | 640 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 641 | |
743bb465 | 642 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
1da177e4 LT |
643 | return -error; |
644 | } | |
645 | ||
646 | STATIC int | |
647 | xfs_ioc_bulkstat( | |
648 | xfs_mount_t *mp, | |
649 | unsigned int cmd, | |
650 | void __user *arg) | |
651 | { | |
652 | xfs_fsop_bulkreq_t bulkreq; | |
653 | int count; /* # of records returned */ | |
654 | xfs_ino_t inlast; /* last inode number */ | |
655 | int done; | |
656 | int error; | |
657 | ||
658 | /* done = 1 if there are more stats to get and if bulkstat */ | |
659 | /* should be called again (unused here, but used in dmapi) */ | |
660 | ||
661 | if (!capable(CAP_SYS_ADMIN)) | |
662 | return -EPERM; | |
663 | ||
664 | if (XFS_FORCED_SHUTDOWN(mp)) | |
665 | return -XFS_ERROR(EIO); | |
666 | ||
667 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
668 | return -XFS_ERROR(EFAULT); | |
669 | ||
670 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
671 | return -XFS_ERROR(EFAULT); | |
672 | ||
673 | if ((count = bulkreq.icount) <= 0) | |
674 | return -XFS_ERROR(EINVAL); | |
675 | ||
cd57e594 LM |
676 | if (bulkreq.ubuffer == NULL) |
677 | return -XFS_ERROR(EINVAL); | |
678 | ||
1da177e4 LT |
679 | if (cmd == XFS_IOC_FSINUMBERS) |
680 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 681 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
682 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
683 | error = xfs_bulkstat_single(mp, &inlast, | |
684 | bulkreq.ubuffer, &done); | |
cd57e594 LM |
685 | else /* XFS_IOC_FSBULKSTAT */ |
686 | error = xfs_bulkstat(mp, &inlast, &count, | |
687 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
688 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
689 | BULKSTAT_FG_QUICK, &done); | |
1da177e4 LT |
690 | |
691 | if (error) | |
692 | return -error; | |
693 | ||
694 | if (bulkreq.ocount != NULL) { | |
695 | if (copy_to_user(bulkreq.lastip, &inlast, | |
696 | sizeof(xfs_ino_t))) | |
697 | return -XFS_ERROR(EFAULT); | |
698 | ||
699 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
700 | return -XFS_ERROR(EFAULT); | |
701 | } | |
702 | ||
703 | return 0; | |
704 | } | |
705 | ||
706 | STATIC int | |
707 | xfs_ioc_fsgeometry_v1( | |
708 | xfs_mount_t *mp, | |
709 | void __user *arg) | |
710 | { | |
711 | xfs_fsop_geom_v1_t fsgeo; | |
712 | int error; | |
713 | ||
714 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
715 | if (error) | |
716 | return -error; | |
717 | ||
718 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
719 | return -XFS_ERROR(EFAULT); | |
720 | return 0; | |
721 | } | |
722 | ||
723 | STATIC int | |
724 | xfs_ioc_fsgeometry( | |
725 | xfs_mount_t *mp, | |
726 | void __user *arg) | |
727 | { | |
728 | xfs_fsop_geom_t fsgeo; | |
729 | int error; | |
730 | ||
731 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
732 | if (error) | |
733 | return -error; | |
734 | ||
735 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
736 | return -XFS_ERROR(EFAULT); | |
737 | return 0; | |
738 | } | |
739 | ||
740 | /* | |
741 | * Linux extended inode flags interface. | |
742 | */ | |
1da177e4 LT |
743 | |
744 | STATIC unsigned int | |
745 | xfs_merge_ioc_xflags( | |
746 | unsigned int flags, | |
747 | unsigned int start) | |
748 | { | |
749 | unsigned int xflags = start; | |
750 | ||
39058a0e | 751 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
752 | xflags |= XFS_XFLAG_IMMUTABLE; |
753 | else | |
754 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 755 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
756 | xflags |= XFS_XFLAG_APPEND; |
757 | else | |
758 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 759 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
760 | xflags |= XFS_XFLAG_SYNC; |
761 | else | |
762 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 763 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
764 | xflags |= XFS_XFLAG_NOATIME; |
765 | else | |
766 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 767 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
768 | xflags |= XFS_XFLAG_NODUMP; |
769 | else | |
770 | xflags &= ~XFS_XFLAG_NODUMP; | |
771 | ||
772 | return xflags; | |
773 | } | |
774 | ||
775 | STATIC unsigned int | |
776 | xfs_di2lxflags( | |
777 | __uint16_t di_flags) | |
778 | { | |
779 | unsigned int flags = 0; | |
780 | ||
781 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 782 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 783 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 784 | flags |= FS_APPEND_FL; |
1da177e4 | 785 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 786 | flags |= FS_SYNC_FL; |
1da177e4 | 787 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 788 | flags |= FS_NOATIME_FL; |
1da177e4 | 789 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 790 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
791 | return flags; |
792 | } | |
793 | ||
c83bfab1 CH |
794 | STATIC int |
795 | xfs_ioc_fsgetxattr( | |
796 | xfs_inode_t *ip, | |
797 | int attr, | |
798 | void __user *arg) | |
799 | { | |
800 | struct fsxattr fa; | |
801 | ||
802 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
803 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
804 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
805 | fa.fsx_projid = ip->i_d.di_projid; | |
806 | ||
807 | if (attr) { | |
808 | if (ip->i_afp) { | |
809 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
810 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
811 | sizeof(xfs_bmbt_rec_t); | |
812 | else | |
813 | fa.fsx_nextents = ip->i_d.di_anextents; | |
814 | } else | |
815 | fa.fsx_nextents = 0; | |
816 | } else { | |
817 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
818 | fa.fsx_nextents = ip->i_df.if_bytes / | |
819 | sizeof(xfs_bmbt_rec_t); | |
820 | else | |
821 | fa.fsx_nextents = ip->i_d.di_nextents; | |
822 | } | |
823 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
824 | ||
825 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
826 | return -EFAULT; | |
827 | return 0; | |
828 | } | |
829 | ||
25fe55e8 CH |
830 | STATIC void |
831 | xfs_set_diflags( | |
832 | struct xfs_inode *ip, | |
833 | unsigned int xflags) | |
834 | { | |
835 | unsigned int di_flags; | |
836 | ||
837 | /* can't set PREALLOC this way, just preserve it */ | |
838 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
839 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
840 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
841 | if (xflags & XFS_XFLAG_APPEND) | |
842 | di_flags |= XFS_DIFLAG_APPEND; | |
843 | if (xflags & XFS_XFLAG_SYNC) | |
844 | di_flags |= XFS_DIFLAG_SYNC; | |
845 | if (xflags & XFS_XFLAG_NOATIME) | |
846 | di_flags |= XFS_DIFLAG_NOATIME; | |
847 | if (xflags & XFS_XFLAG_NODUMP) | |
848 | di_flags |= XFS_DIFLAG_NODUMP; | |
849 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
850 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
851 | if (xflags & XFS_XFLAG_NODEFRAG) | |
852 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
853 | if (xflags & XFS_XFLAG_FILESTREAM) | |
854 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
855 | if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { | |
856 | if (xflags & XFS_XFLAG_RTINHERIT) | |
857 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
858 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
859 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
860 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
861 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
862 | } else if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { | |
863 | if (xflags & XFS_XFLAG_REALTIME) | |
864 | di_flags |= XFS_DIFLAG_REALTIME; | |
865 | if (xflags & XFS_XFLAG_EXTSIZE) | |
866 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
867 | } | |
868 | ||
869 | ip->i_d.di_flags = di_flags; | |
870 | } | |
871 | ||
f13fae2d CH |
872 | STATIC void |
873 | xfs_diflags_to_linux( | |
874 | struct xfs_inode *ip) | |
875 | { | |
e4f75291 | 876 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
877 | unsigned int xflags = xfs_ip2xflags(ip); |
878 | ||
879 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
880 | inode->i_flags |= S_IMMUTABLE; | |
881 | else | |
882 | inode->i_flags &= ~S_IMMUTABLE; | |
883 | if (xflags & XFS_XFLAG_APPEND) | |
884 | inode->i_flags |= S_APPEND; | |
885 | else | |
886 | inode->i_flags &= ~S_APPEND; | |
887 | if (xflags & XFS_XFLAG_SYNC) | |
888 | inode->i_flags |= S_SYNC; | |
889 | else | |
890 | inode->i_flags &= ~S_SYNC; | |
891 | if (xflags & XFS_XFLAG_NOATIME) | |
892 | inode->i_flags |= S_NOATIME; | |
893 | else | |
894 | inode->i_flags &= ~S_NOATIME; | |
895 | } | |
25fe55e8 CH |
896 | |
897 | #define FSX_PROJID 1 | |
898 | #define FSX_EXTSIZE 2 | |
899 | #define FSX_XFLAGS 4 | |
900 | #define FSX_NONBLOCK 8 | |
901 | ||
902 | STATIC int | |
903 | xfs_ioctl_setattr( | |
904 | xfs_inode_t *ip, | |
905 | struct fsxattr *fa, | |
906 | int mask) | |
907 | { | |
908 | struct xfs_mount *mp = ip->i_mount; | |
909 | struct xfs_trans *tp; | |
910 | unsigned int lock_flags = 0; | |
911 | struct xfs_dquot *udqp = NULL, *gdqp = NULL; | |
912 | struct xfs_dquot *olddquot = NULL; | |
913 | int code; | |
914 | ||
915 | xfs_itrace_entry(ip); | |
916 | ||
917 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
918 | return XFS_ERROR(EROFS); | |
919 | if (XFS_FORCED_SHUTDOWN(mp)) | |
920 | return XFS_ERROR(EIO); | |
921 | ||
922 | /* | |
923 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
924 | * before we start any other transactions. Trying to do this later | |
925 | * is messy. We don't care to take a readlock to look at the ids | |
926 | * in inode here, because we can't hold it across the trans_reserve. | |
927 | * If the IDs do change before we take the ilock, we're covered | |
928 | * because the i_*dquot fields will get updated anyway. | |
929 | */ | |
930 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
931 | code = XFS_QM_DQVOPALLOC(mp, ip, ip->i_d.di_uid, | |
932 | ip->i_d.di_gid, fa->fsx_projid, | |
933 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
934 | if (code) | |
935 | return code; | |
936 | } | |
937 | ||
938 | /* | |
939 | * For the other attributes, we acquire the inode lock and | |
940 | * first do an error checking pass. | |
941 | */ | |
942 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
943 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
944 | if (code) | |
945 | goto error_return; | |
946 | ||
947 | lock_flags = XFS_ILOCK_EXCL; | |
948 | xfs_ilock(ip, lock_flags); | |
949 | ||
950 | /* | |
951 | * CAP_FOWNER overrides the following restrictions: | |
952 | * | |
953 | * The user ID of the calling process must be equal | |
954 | * to the file owner ID, except in cases where the | |
955 | * CAP_FSETID capability is applicable. | |
956 | */ | |
91b77712 | 957 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
958 | code = XFS_ERROR(EPERM); |
959 | goto error_return; | |
960 | } | |
961 | ||
962 | /* | |
963 | * Do a quota reservation only if projid is actually going to change. | |
964 | */ | |
965 | if (mask & FSX_PROJID) { | |
966 | if (XFS_IS_PQUOTA_ON(mp) && | |
967 | ip->i_d.di_projid != fa->fsx_projid) { | |
968 | ASSERT(tp); | |
969 | code = XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, udqp, gdqp, | |
970 | capable(CAP_FOWNER) ? | |
971 | XFS_QMOPT_FORCE_RES : 0); | |
972 | if (code) /* out of quota */ | |
973 | goto error_return; | |
974 | } | |
975 | } | |
976 | ||
977 | if (mask & FSX_EXTSIZE) { | |
978 | /* | |
979 | * Can't change extent size if any extents are allocated. | |
980 | */ | |
981 | if (ip->i_d.di_nextents && | |
982 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
983 | fa->fsx_extsize)) { | |
984 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
985 | goto error_return; | |
986 | } | |
987 | ||
988 | /* | |
989 | * Extent size must be a multiple of the appropriate block | |
990 | * size, if set at all. | |
991 | */ | |
992 | if (fa->fsx_extsize != 0) { | |
993 | xfs_extlen_t size; | |
994 | ||
995 | if (XFS_IS_REALTIME_INODE(ip) || | |
996 | ((mask & FSX_XFLAGS) && | |
997 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
998 | size = mp->m_sb.sb_rextsize << | |
999 | mp->m_sb.sb_blocklog; | |
1000 | } else { | |
1001 | size = mp->m_sb.sb_blocksize; | |
1002 | } | |
1003 | ||
1004 | if (fa->fsx_extsize % size) { | |
1005 | code = XFS_ERROR(EINVAL); | |
1006 | goto error_return; | |
1007 | } | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | ||
1012 | if (mask & FSX_XFLAGS) { | |
1013 | /* | |
1014 | * Can't change realtime flag if any extents are allocated. | |
1015 | */ | |
1016 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1017 | (XFS_IS_REALTIME_INODE(ip)) != | |
1018 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1019 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1020 | goto error_return; | |
1021 | } | |
1022 | ||
1023 | /* | |
1024 | * If realtime flag is set then must have realtime data. | |
1025 | */ | |
1026 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1027 | if ((mp->m_sb.sb_rblocks == 0) || | |
1028 | (mp->m_sb.sb_rextsize == 0) || | |
1029 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1030 | code = XFS_ERROR(EINVAL); | |
1031 | goto error_return; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | /* | |
1036 | * Can't modify an immutable/append-only file unless | |
1037 | * we have appropriate permission. | |
1038 | */ | |
1039 | if ((ip->i_d.di_flags & | |
1040 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1041 | (fa->fsx_xflags & | |
1042 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1043 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1044 | code = XFS_ERROR(EPERM); | |
1045 | goto error_return; | |
1046 | } | |
1047 | } | |
1048 | ||
1049 | xfs_trans_ijoin(tp, ip, lock_flags); | |
1050 | xfs_trans_ihold(tp, ip); | |
1051 | ||
1052 | /* | |
1053 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1054 | */ |
1055 | if (mask & FSX_PROJID) { | |
1056 | /* | |
1057 | * CAP_FSETID overrides the following restrictions: | |
1058 | * | |
1059 | * The set-user-ID and set-group-ID bits of a file will be | |
1060 | * cleared upon successful return from chown() | |
1061 | */ | |
1062 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1063 | !capable(CAP_FSETID)) | |
1064 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1065 | ||
1066 | /* | |
1067 | * Change the ownerships and register quota modifications | |
1068 | * in the transaction. | |
1069 | */ | |
1070 | if (ip->i_d.di_projid != fa->fsx_projid) { | |
1071 | if (XFS_IS_PQUOTA_ON(mp)) { | |
1072 | olddquot = XFS_QM_DQVOPCHOWN(mp, tp, ip, | |
1073 | &ip->i_gdquot, gdqp); | |
1074 | } | |
1075 | ip->i_d.di_projid = fa->fsx_projid; | |
1076 | ||
1077 | /* | |
1078 | * We may have to rev the inode as well as | |
1079 | * the superblock version number since projids didn't | |
1080 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1081 | */ | |
51ce16d5 | 1082 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1083 | xfs_bump_ino_vers2(tp, ip); |
1084 | } | |
1085 | ||
1086 | } | |
1087 | ||
1088 | if (mask & FSX_EXTSIZE) | |
1089 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1090 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1091 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1092 | xfs_diflags_to_linux(ip); |
1093 | } | |
25fe55e8 CH |
1094 | |
1095 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1096 | xfs_ichgtime(ip, XFS_ICHGTIME_CHG); | |
1097 | ||
1098 | XFS_STATS_INC(xs_ig_attrchg); | |
1099 | ||
1100 | /* | |
1101 | * If this is a synchronous mount, make sure that the | |
1102 | * transaction goes to disk before returning to the user. | |
1103 | * This is slightly sub-optimal in that truncates require | |
1104 | * two sync transactions instead of one for wsync filesystems. | |
1105 | * One for the truncate and one for the timestamps since we | |
1106 | * don't want to change the timestamps unless we're sure the | |
1107 | * truncate worked. Truncates are less than 1% of the laddis | |
1108 | * mix so this probably isn't worth the trouble to optimize. | |
1109 | */ | |
1110 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1111 | xfs_trans_set_sync(tp); | |
1112 | code = xfs_trans_commit(tp, 0); | |
1113 | xfs_iunlock(ip, lock_flags); | |
1114 | ||
1115 | /* | |
1116 | * Release any dquot(s) the inode had kept before chown. | |
1117 | */ | |
1118 | XFS_QM_DQRELE(mp, olddquot); | |
1119 | XFS_QM_DQRELE(mp, udqp); | |
1120 | XFS_QM_DQRELE(mp, gdqp); | |
1121 | ||
1122 | if (code) | |
1123 | return code; | |
1124 | ||
1125 | if (DM_EVENT_ENABLED(ip, DM_EVENT_ATTRIBUTE)) { | |
1126 | XFS_SEND_NAMESP(mp, DM_EVENT_ATTRIBUTE, ip, DM_RIGHT_NULL, | |
1127 | NULL, DM_RIGHT_NULL, NULL, NULL, 0, 0, | |
1128 | (mask & FSX_NONBLOCK) ? DM_FLAGS_NDELAY : 0); | |
1129 | } | |
1130 | ||
25fe55e8 CH |
1131 | return 0; |
1132 | ||
1133 | error_return: | |
1134 | XFS_QM_DQRELE(mp, udqp); | |
1135 | XFS_QM_DQRELE(mp, gdqp); | |
1136 | xfs_trans_cancel(tp, 0); | |
1137 | if (lock_flags) | |
1138 | xfs_iunlock(ip, lock_flags); | |
1139 | return code; | |
1140 | } | |
1141 | ||
1da177e4 | 1142 | STATIC int |
df26cfe8 | 1143 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1144 | xfs_inode_t *ip, |
1145 | struct file *filp, | |
1da177e4 LT |
1146 | void __user *arg) |
1147 | { | |
1148 | struct fsxattr fa; | |
25fe55e8 | 1149 | unsigned int mask; |
df26cfe8 LM |
1150 | |
1151 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1152 | return -EFAULT; | |
1da177e4 | 1153 | |
25fe55e8 | 1154 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1155 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1156 | mask |= FSX_NONBLOCK; |
1da177e4 | 1157 | |
25fe55e8 | 1158 | return -xfs_ioctl_setattr(ip, &fa, mask); |
df26cfe8 | 1159 | } |
1da177e4 | 1160 | |
df26cfe8 LM |
1161 | STATIC int |
1162 | xfs_ioc_getxflags( | |
1163 | xfs_inode_t *ip, | |
1164 | void __user *arg) | |
1165 | { | |
1166 | unsigned int flags; | |
1da177e4 | 1167 | |
df26cfe8 LM |
1168 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1169 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1170 | return -EFAULT; | |
1171 | return 0; | |
1172 | } | |
1da177e4 | 1173 | |
df26cfe8 LM |
1174 | STATIC int |
1175 | xfs_ioc_setxflags( | |
1176 | xfs_inode_t *ip, | |
1177 | struct file *filp, | |
1178 | void __user *arg) | |
1179 | { | |
25fe55e8 | 1180 | struct fsxattr fa; |
df26cfe8 | 1181 | unsigned int flags; |
25fe55e8 | 1182 | unsigned int mask; |
1da177e4 | 1183 | |
df26cfe8 LM |
1184 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1185 | return -EFAULT; | |
1da177e4 | 1186 | |
df26cfe8 LM |
1187 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1188 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1189 | FS_SYNC_FL)) | |
1190 | return -EOPNOTSUPP; | |
1da177e4 | 1191 | |
25fe55e8 | 1192 | mask = FSX_XFLAGS; |
df26cfe8 | 1193 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1194 | mask |= FSX_NONBLOCK; |
1195 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1196 | |
25fe55e8 | 1197 | return -xfs_ioctl_setattr(ip, &fa, mask); |
1da177e4 LT |
1198 | } |
1199 | ||
8a7141a8 ES |
1200 | STATIC int |
1201 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1202 | { | |
1203 | struct getbmap __user *base = *ap; | |
1204 | ||
1205 | /* copy only getbmap portion (not getbmapx) */ | |
1206 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1207 | return XFS_ERROR(EFAULT); | |
1208 | ||
1209 | *ap += sizeof(struct getbmap); | |
1210 | return 0; | |
1211 | } | |
1212 | ||
1da177e4 LT |
1213 | STATIC int |
1214 | xfs_ioc_getbmap( | |
993386c1 | 1215 | struct xfs_inode *ip, |
1da177e4 LT |
1216 | int ioflags, |
1217 | unsigned int cmd, | |
1218 | void __user *arg) | |
1219 | { | |
8a7141a8 | 1220 | struct getbmapx bmx; |
1da177e4 LT |
1221 | int error; |
1222 | ||
8a7141a8 | 1223 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1224 | return -XFS_ERROR(EFAULT); |
1225 | ||
8a7141a8 | 1226 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1227 | return -XFS_ERROR(EINVAL); |
1228 | ||
8a7141a8 | 1229 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1230 | if (ioflags & IO_INVIS) |
8a7141a8 | 1231 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1232 | |
8a7141a8 ES |
1233 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1234 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1235 | if (error) |
1236 | return -error; | |
1237 | ||
8a7141a8 ES |
1238 | /* copy back header - only size of getbmap */ |
1239 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1240 | return -XFS_ERROR(EFAULT); |
1241 | return 0; | |
1242 | } | |
1243 | ||
8a7141a8 ES |
1244 | STATIC int |
1245 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1246 | { | |
1247 | struct getbmapx __user *base = *ap; | |
1248 | ||
1249 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1250 | return XFS_ERROR(EFAULT); | |
1251 | ||
1252 | *ap += sizeof(struct getbmapx); | |
1253 | return 0; | |
1254 | } | |
1255 | ||
1da177e4 LT |
1256 | STATIC int |
1257 | xfs_ioc_getbmapx( | |
993386c1 | 1258 | struct xfs_inode *ip, |
1da177e4 LT |
1259 | void __user *arg) |
1260 | { | |
1261 | struct getbmapx bmx; | |
1da177e4 LT |
1262 | int error; |
1263 | ||
1264 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1265 | return -XFS_ERROR(EFAULT); | |
1266 | ||
1267 | if (bmx.bmv_count < 2) | |
1268 | return -XFS_ERROR(EINVAL); | |
1269 | ||
8a7141a8 | 1270 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1271 | return -XFS_ERROR(EINVAL); |
1272 | ||
8a7141a8 ES |
1273 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1274 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1275 | if (error) |
1276 | return -error; | |
1277 | ||
8a7141a8 ES |
1278 | /* copy back header */ |
1279 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1280 | return -XFS_ERROR(EFAULT); |
1281 | ||
1282 | return 0; | |
1283 | } | |
df26cfe8 | 1284 | |
4d4be482 CH |
1285 | /* |
1286 | * Note: some of the ioctl's return positive numbers as a | |
1287 | * byte count indicating success, such as readlink_by_handle. | |
1288 | * So we don't "sign flip" like most other routines. This means | |
1289 | * true errors need to be returned as a negative value. | |
1290 | */ | |
1291 | long | |
1292 | xfs_file_ioctl( | |
df26cfe8 | 1293 | struct file *filp, |
df26cfe8 | 1294 | unsigned int cmd, |
4d4be482 | 1295 | unsigned long p) |
df26cfe8 LM |
1296 | { |
1297 | struct inode *inode = filp->f_path.dentry->d_inode; | |
4d4be482 CH |
1298 | struct xfs_inode *ip = XFS_I(inode); |
1299 | struct xfs_mount *mp = ip->i_mount; | |
1300 | void __user *arg = (void __user *)p; | |
1301 | int ioflags = 0; | |
df26cfe8 LM |
1302 | int error; |
1303 | ||
4d4be482 CH |
1304 | if (filp->f_mode & FMODE_NOCMTIME) |
1305 | ioflags |= IO_INVIS; | |
df26cfe8 | 1306 | |
4d4be482 CH |
1307 | xfs_itrace_entry(ip); |
1308 | ||
1309 | switch (cmd) { | |
df26cfe8 LM |
1310 | case XFS_IOC_ALLOCSP: |
1311 | case XFS_IOC_FREESP: | |
1312 | case XFS_IOC_RESVSP: | |
1313 | case XFS_IOC_UNRESVSP: | |
1314 | case XFS_IOC_ALLOCSP64: | |
1315 | case XFS_IOC_FREESP64: | |
1316 | case XFS_IOC_RESVSP64: | |
743bb465 | 1317 | case XFS_IOC_UNRESVSP64: { |
1318 | xfs_flock64_t bf; | |
df26cfe8 | 1319 | |
743bb465 | 1320 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1321 | return -XFS_ERROR(EFAULT); | |
1322 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1323 | } | |
df26cfe8 LM |
1324 | case XFS_IOC_DIOINFO: { |
1325 | struct dioattr da; | |
1326 | xfs_buftarg_t *target = | |
1327 | XFS_IS_REALTIME_INODE(ip) ? | |
1328 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1329 | ||
1330 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1331 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1332 | ||
1333 | if (copy_to_user(arg, &da, sizeof(da))) | |
1334 | return -XFS_ERROR(EFAULT); | |
1335 | return 0; | |
1336 | } | |
1337 | ||
1338 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1339 | case XFS_IOC_FSBULKSTAT: | |
1340 | case XFS_IOC_FSINUMBERS: | |
1341 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1342 | ||
1343 | case XFS_IOC_FSGEOMETRY_V1: | |
1344 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1345 | ||
1346 | case XFS_IOC_FSGEOMETRY: | |
1347 | return xfs_ioc_fsgeometry(mp, arg); | |
1348 | ||
1349 | case XFS_IOC_GETVERSION: | |
1350 | return put_user(inode->i_generation, (int __user *)arg); | |
1351 | ||
1352 | case XFS_IOC_FSGETXATTR: | |
1353 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1354 | case XFS_IOC_FSGETXATTRA: | |
1355 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1356 | case XFS_IOC_FSSETXATTR: |
1357 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1358 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1359 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1360 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1361 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1362 | |
1363 | case XFS_IOC_FSSETDM: { | |
1364 | struct fsdmidata dmi; | |
1365 | ||
1366 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1367 | return -XFS_ERROR(EFAULT); | |
1368 | ||
1369 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1370 | dmi.fsd_dmstate); | |
1371 | return -error; | |
1372 | } | |
1373 | ||
1374 | case XFS_IOC_GETBMAP: | |
1375 | case XFS_IOC_GETBMAPA: | |
1376 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1377 | ||
1378 | case XFS_IOC_GETBMAPX: | |
1379 | return xfs_ioc_getbmapx(ip, arg); | |
1380 | ||
1381 | case XFS_IOC_FD_TO_HANDLE: | |
1382 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1383 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1384 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1385 | |
743bb465 | 1386 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1387 | return -XFS_ERROR(EFAULT); | |
1388 | return xfs_find_handle(cmd, &hreq); | |
1389 | } | |
1390 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1391 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1392 | |
743bb465 | 1393 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1394 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1395 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1396 | } |
df26cfe8 | 1397 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1398 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1399 | |
743bb465 | 1400 | case XFS_IOC_READLINK_BY_HANDLE: { |
1401 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1402 | |
743bb465 | 1403 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1404 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1405 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1406 | } |
df26cfe8 | 1407 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1408 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1409 | |
1410 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1411 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1412 | |
1413 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1414 | struct xfs_swapext sxp; |
1415 | ||
1416 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1417 | return -XFS_ERROR(EFAULT); | |
1418 | error = xfs_swapext(&sxp); | |
df26cfe8 LM |
1419 | return -error; |
1420 | } | |
1421 | ||
1422 | case XFS_IOC_FSCOUNTS: { | |
1423 | xfs_fsop_counts_t out; | |
1424 | ||
1425 | error = xfs_fs_counts(mp, &out); | |
1426 | if (error) | |
1427 | return -error; | |
1428 | ||
1429 | if (copy_to_user(arg, &out, sizeof(out))) | |
1430 | return -XFS_ERROR(EFAULT); | |
1431 | return 0; | |
1432 | } | |
1433 | ||
1434 | case XFS_IOC_SET_RESBLKS: { | |
1435 | xfs_fsop_resblks_t inout; | |
1436 | __uint64_t in; | |
1437 | ||
1438 | if (!capable(CAP_SYS_ADMIN)) | |
1439 | return -EPERM; | |
1440 | ||
1441 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
1442 | return -XFS_ERROR(EFAULT); | |
1443 | ||
1444 | /* input parameter is passed in resblks field of structure */ | |
1445 | in = inout.resblks; | |
1446 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1447 | if (error) | |
1448 | return -error; | |
1449 | ||
1450 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1451 | return -XFS_ERROR(EFAULT); | |
1452 | return 0; | |
1453 | } | |
1454 | ||
1455 | case XFS_IOC_GET_RESBLKS: { | |
1456 | xfs_fsop_resblks_t out; | |
1457 | ||
1458 | if (!capable(CAP_SYS_ADMIN)) | |
1459 | return -EPERM; | |
1460 | ||
1461 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1462 | if (error) | |
1463 | return -error; | |
1464 | ||
1465 | if (copy_to_user(arg, &out, sizeof(out))) | |
1466 | return -XFS_ERROR(EFAULT); | |
1467 | ||
1468 | return 0; | |
1469 | } | |
1470 | ||
1471 | case XFS_IOC_FSGROWFSDATA: { | |
1472 | xfs_growfs_data_t in; | |
1473 | ||
df26cfe8 LM |
1474 | if (copy_from_user(&in, arg, sizeof(in))) |
1475 | return -XFS_ERROR(EFAULT); | |
1476 | ||
1477 | error = xfs_growfs_data(mp, &in); | |
1478 | return -error; | |
1479 | } | |
1480 | ||
1481 | case XFS_IOC_FSGROWFSLOG: { | |
1482 | xfs_growfs_log_t in; | |
1483 | ||
df26cfe8 LM |
1484 | if (copy_from_user(&in, arg, sizeof(in))) |
1485 | return -XFS_ERROR(EFAULT); | |
1486 | ||
1487 | error = xfs_growfs_log(mp, &in); | |
1488 | return -error; | |
1489 | } | |
1490 | ||
1491 | case XFS_IOC_FSGROWFSRT: { | |
1492 | xfs_growfs_rt_t in; | |
1493 | ||
df26cfe8 LM |
1494 | if (copy_from_user(&in, arg, sizeof(in))) |
1495 | return -XFS_ERROR(EFAULT); | |
1496 | ||
1497 | error = xfs_growfs_rt(mp, &in); | |
1498 | return -error; | |
1499 | } | |
1500 | ||
df26cfe8 LM |
1501 | case XFS_IOC_GOINGDOWN: { |
1502 | __uint32_t in; | |
1503 | ||
1504 | if (!capable(CAP_SYS_ADMIN)) | |
1505 | return -EPERM; | |
1506 | ||
1507 | if (get_user(in, (__uint32_t __user *)arg)) | |
1508 | return -XFS_ERROR(EFAULT); | |
1509 | ||
1510 | error = xfs_fs_goingdown(mp, in); | |
1511 | return -error; | |
1512 | } | |
1513 | ||
1514 | case XFS_IOC_ERROR_INJECTION: { | |
1515 | xfs_error_injection_t in; | |
1516 | ||
1517 | if (!capable(CAP_SYS_ADMIN)) | |
1518 | return -EPERM; | |
1519 | ||
1520 | if (copy_from_user(&in, arg, sizeof(in))) | |
1521 | return -XFS_ERROR(EFAULT); | |
1522 | ||
1523 | error = xfs_errortag_add(in.errtag, mp); | |
1524 | return -error; | |
1525 | } | |
1526 | ||
1527 | case XFS_IOC_ERROR_CLEARALL: | |
1528 | if (!capable(CAP_SYS_ADMIN)) | |
1529 | return -EPERM; | |
1530 | ||
1531 | error = xfs_errortag_clearall(mp, 1); | |
1532 | return -error; | |
1533 | ||
1534 | default: | |
1535 | return -ENOTTY; | |
1536 | } | |
1537 | } |