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 | 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 | 26 | #include "xfs_alloc.h" |
1da177e4 | 27 | #include "xfs_mount.h" |
1da177e4 | 28 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
29 | #include "xfs_dinode.h" |
30 | #include "xfs_inode.h" | |
7bf446f8 | 31 | #include "xfs_ioctl.h" |
1da177e4 | 32 | #include "xfs_rtalloc.h" |
1da177e4 | 33 | #include "xfs_itable.h" |
a844f451 | 34 | #include "xfs_error.h" |
1da177e4 | 35 | #include "xfs_attr.h" |
a844f451 | 36 | #include "xfs_bmap.h" |
1da177e4 LT |
37 | #include "xfs_buf_item.h" |
38 | #include "xfs_utils.h" | |
39 | #include "xfs_dfrag.h" | |
40 | #include "xfs_fsops.h" | |
993386c1 | 41 | #include "xfs_vnodeops.h" |
25fe55e8 CH |
42 | #include "xfs_quota.h" |
43 | #include "xfs_inode_item.h" | |
d296d30a | 44 | #include "xfs_export.h" |
0b1b213f | 45 | #include "xfs_trace.h" |
1da177e4 | 46 | |
16f7e0fe | 47 | #include <linux/capability.h> |
1da177e4 LT |
48 | #include <linux/dcache.h> |
49 | #include <linux/mount.h> | |
50 | #include <linux/namei.h> | |
51 | #include <linux/pagemap.h> | |
5a0e3ad6 | 52 | #include <linux/slab.h> |
d296d30a | 53 | #include <linux/exportfs.h> |
1da177e4 LT |
54 | |
55 | /* | |
56 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
57 | * a file or fs handle. | |
58 | * | |
59 | * XFS_IOC_PATH_TO_FSHANDLE | |
60 | * returns fs handle for a mount point or path within that mount point | |
61 | * XFS_IOC_FD_TO_HANDLE | |
62 | * returns full handle for a FD opened in user space | |
63 | * XFS_IOC_PATH_TO_HANDLE | |
64 | * returns full handle for a path | |
65 | */ | |
d5547f9f | 66 | int |
1da177e4 LT |
67 | xfs_find_handle( |
68 | unsigned int cmd, | |
743bb465 | 69 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
70 | { |
71 | int hsize; | |
72 | xfs_handle_t handle; | |
1da177e4 | 73 | struct inode *inode; |
4346cdd4 CH |
74 | struct file *file = NULL; |
75 | struct path path; | |
76 | int error; | |
77 | struct xfs_inode *ip; | |
1da177e4 | 78 | |
4346cdd4 | 79 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
743bb465 | 80 | file = fget(hreq->fd); |
1da177e4 | 81 | if (!file) |
4346cdd4 CH |
82 | return -EBADF; |
83 | inode = file->f_path.dentry->d_inode; | |
84 | } else { | |
85 | error = user_lpath((const char __user *)hreq->path, &path); | |
86 | if (error) | |
87 | return error; | |
88 | inode = path.dentry->d_inode; | |
1da177e4 | 89 | } |
4346cdd4 CH |
90 | ip = XFS_I(inode); |
91 | ||
92 | /* | |
93 | * We can only generate handles for inodes residing on a XFS filesystem, | |
94 | * and only for regular files, directories or symbolic links. | |
95 | */ | |
96 | error = -EINVAL; | |
97 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
98 | goto out_put; | |
99 | ||
100 | error = -EBADF; | |
101 | if (!S_ISREG(inode->i_mode) && | |
102 | !S_ISDIR(inode->i_mode) && | |
103 | !S_ISLNK(inode->i_mode)) | |
104 | goto out_put; | |
105 | ||
106 | ||
107 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
108 | ||
109 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
110 | /* | |
111 | * This handle only contains an fsid, zero the rest. | |
112 | */ | |
113 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
114 | hsize = sizeof(xfs_fsid_t); | |
115 | } else { | |
1da177e4 LT |
116 | int lock_mode; |
117 | ||
1da177e4 | 118 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
119 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
120 | sizeof(handle.ha_fid.fid_len); | |
121 | handle.ha_fid.fid_pad = 0; | |
122 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
123 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
124 | xfs_iunlock_map_shared(ip, lock_mode); |
125 | ||
126 | hsize = XFS_HSIZE(handle); | |
127 | } | |
128 | ||
4346cdd4 | 129 | error = -EFAULT; |
743bb465 | 130 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
131 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
132 | goto out_put; | |
1da177e4 | 133 | |
4346cdd4 CH |
134 | error = 0; |
135 | ||
136 | out_put: | |
137 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
138 | fput(file); | |
139 | else | |
140 | path_put(&path); | |
141 | return error; | |
1da177e4 LT |
142 | } |
143 | ||
1da177e4 | 144 | /* |
d296d30a CH |
145 | * No need to do permission checks on the various pathname components |
146 | * as the handle operations are privileged. | |
1da177e4 LT |
147 | */ |
148 | STATIC int | |
d296d30a CH |
149 | xfs_handle_acceptable( |
150 | void *context, | |
151 | struct dentry *dentry) | |
152 | { | |
153 | return 1; | |
154 | } | |
155 | ||
156 | /* | |
157 | * Convert userspace handle data into a dentry. | |
158 | */ | |
159 | struct dentry * | |
160 | xfs_handle_to_dentry( | |
161 | struct file *parfilp, | |
162 | void __user *uhandle, | |
163 | u32 hlen) | |
1da177e4 | 164 | { |
1da177e4 | 165 | xfs_handle_t handle; |
d296d30a | 166 | struct xfs_fid64 fid; |
1da177e4 LT |
167 | |
168 | /* | |
169 | * Only allow handle opens under a directory. | |
170 | */ | |
d296d30a CH |
171 | if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) |
172 | return ERR_PTR(-ENOTDIR); | |
173 | ||
174 | if (hlen != sizeof(xfs_handle_t)) | |
175 | return ERR_PTR(-EINVAL); | |
176 | if (copy_from_user(&handle, uhandle, hlen)) | |
177 | return ERR_PTR(-EFAULT); | |
178 | if (handle.ha_fid.fid_len != | |
179 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
180 | return ERR_PTR(-EINVAL); | |
181 | ||
182 | memset(&fid, 0, sizeof(struct fid)); | |
183 | fid.ino = handle.ha_fid.fid_ino; | |
184 | fid.gen = handle.ha_fid.fid_gen; | |
185 | ||
186 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
187 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
188 | xfs_handle_acceptable, NULL); | |
189 | } | |
1da177e4 | 190 | |
d296d30a CH |
191 | STATIC struct dentry * |
192 | xfs_handlereq_to_dentry( | |
193 | struct file *parfilp, | |
194 | xfs_fsop_handlereq_t *hreq) | |
195 | { | |
196 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
197 | } |
198 | ||
d5547f9f | 199 | int |
1da177e4 | 200 | xfs_open_by_handle( |
1da177e4 | 201 | struct file *parfilp, |
d296d30a | 202 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 203 | { |
745ca247 | 204 | const struct cred *cred = current_cred(); |
1da177e4 | 205 | int error; |
d296d30a | 206 | int fd; |
1da177e4 LT |
207 | int permflag; |
208 | struct file *filp; | |
209 | struct inode *inode; | |
210 | struct dentry *dentry; | |
1da177e4 LT |
211 | |
212 | if (!capable(CAP_SYS_ADMIN)) | |
213 | return -XFS_ERROR(EPERM); | |
1da177e4 | 214 | |
d296d30a CH |
215 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
216 | if (IS_ERR(dentry)) | |
217 | return PTR_ERR(dentry); | |
218 | inode = dentry->d_inode; | |
1da177e4 LT |
219 | |
220 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
221 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
222 | error = -XFS_ERROR(EPERM); |
223 | goto out_dput; | |
1da177e4 LT |
224 | } |
225 | ||
226 | #if BITS_PER_LONG != 32 | |
743bb465 | 227 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 228 | #endif |
d296d30a | 229 | |
1da177e4 | 230 | /* Put open permission in namei format. */ |
743bb465 | 231 | permflag = hreq->oflags; |
1da177e4 LT |
232 | if ((permflag+1) & O_ACCMODE) |
233 | permflag++; | |
234 | if (permflag & O_TRUNC) | |
235 | permflag |= 2; | |
236 | ||
237 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
238 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
d296d30a CH |
239 | error = -XFS_ERROR(EPERM); |
240 | goto out_dput; | |
1da177e4 LT |
241 | } |
242 | ||
243 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
d296d30a CH |
244 | error = -XFS_ERROR(EACCES); |
245 | goto out_dput; | |
1da177e4 LT |
246 | } |
247 | ||
248 | /* Can't write directories. */ | |
d296d30a CH |
249 | if (S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { |
250 | error = -XFS_ERROR(EISDIR); | |
251 | goto out_dput; | |
1da177e4 LT |
252 | } |
253 | ||
d296d30a CH |
254 | fd = get_unused_fd(); |
255 | if (fd < 0) { | |
256 | error = fd; | |
257 | goto out_dput; | |
1da177e4 LT |
258 | } |
259 | ||
d296d30a CH |
260 | filp = dentry_open(dentry, mntget(parfilp->f_path.mnt), |
261 | hreq->oflags, cred); | |
1da177e4 | 262 | if (IS_ERR(filp)) { |
d296d30a CH |
263 | put_unused_fd(fd); |
264 | return PTR_ERR(filp); | |
1da177e4 | 265 | } |
4d4be482 | 266 | |
2e2e7bb1 | 267 | if (inode->i_mode & S_IFREG) { |
2e2e7bb1 | 268 | filp->f_flags |= O_NOATIME; |
4d4be482 | 269 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 270 | } |
1da177e4 | 271 | |
d296d30a CH |
272 | fd_install(fd, filp); |
273 | return fd; | |
274 | ||
275 | out_dput: | |
276 | dput(dentry); | |
277 | return error; | |
1da177e4 LT |
278 | } |
279 | ||
804c83c3 CH |
280 | /* |
281 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
282 | * unused first argument. | |
283 | */ | |
284 | STATIC int | |
285 | do_readlink( | |
286 | char __user *buffer, | |
287 | int buflen, | |
288 | const char *link) | |
289 | { | |
290 | int len; | |
291 | ||
292 | len = PTR_ERR(link); | |
293 | if (IS_ERR(link)) | |
294 | goto out; | |
295 | ||
296 | len = strlen(link); | |
297 | if (len > (unsigned) buflen) | |
298 | len = buflen; | |
299 | if (copy_to_user(buffer, link, len)) | |
300 | len = -EFAULT; | |
301 | out: | |
302 | return len; | |
303 | } | |
304 | ||
305 | ||
d5547f9f | 306 | int |
1da177e4 | 307 | xfs_readlink_by_handle( |
d296d30a CH |
308 | struct file *parfilp, |
309 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 310 | { |
d296d30a | 311 | struct dentry *dentry; |
1da177e4 | 312 | __u32 olen; |
804c83c3 CH |
313 | void *link; |
314 | int error; | |
1da177e4 LT |
315 | |
316 | if (!capable(CAP_SYS_ADMIN)) | |
317 | return -XFS_ERROR(EPERM); | |
1da177e4 | 318 | |
d296d30a CH |
319 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
320 | if (IS_ERR(dentry)) | |
321 | return PTR_ERR(dentry); | |
1da177e4 LT |
322 | |
323 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 324 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 325 | error = -XFS_ERROR(EINVAL); |
d296d30a | 326 | goto out_dput; |
1da177e4 LT |
327 | } |
328 | ||
743bb465 | 329 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 330 | error = -XFS_ERROR(EFAULT); |
d296d30a | 331 | goto out_dput; |
1da177e4 | 332 | } |
1da177e4 | 333 | |
804c83c3 | 334 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
335 | if (!link) { |
336 | error = -XFS_ERROR(ENOMEM); | |
337 | goto out_dput; | |
338 | } | |
1da177e4 | 339 | |
d296d30a | 340 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 341 | if (error) |
804c83c3 | 342 | goto out_kfree; |
743bb465 | 343 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
344 | if (error) |
345 | goto out_kfree; | |
67fcaa73 | 346 | |
804c83c3 CH |
347 | out_kfree: |
348 | kfree(link); | |
d296d30a CH |
349 | out_dput: |
350 | dput(dentry); | |
804c83c3 | 351 | return error; |
1da177e4 LT |
352 | } |
353 | ||
354 | STATIC int | |
355 | xfs_fssetdm_by_handle( | |
d296d30a CH |
356 | struct file *parfilp, |
357 | void __user *arg) | |
1da177e4 LT |
358 | { |
359 | int error; | |
360 | struct fsdmidata fsd; | |
361 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 362 | struct dentry *dentry; |
1da177e4 LT |
363 | |
364 | if (!capable(CAP_MKNOD)) | |
365 | return -XFS_ERROR(EPERM); | |
366 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
367 | return -XFS_ERROR(EFAULT); | |
368 | ||
d296d30a CH |
369 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
370 | if (IS_ERR(dentry)) | |
371 | return PTR_ERR(dentry); | |
1da177e4 | 372 | |
d296d30a | 373 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
374 | error = -XFS_ERROR(EPERM); |
375 | goto out; | |
1da177e4 LT |
376 | } |
377 | ||
378 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
379 | error = -XFS_ERROR(EFAULT); |
380 | goto out; | |
1da177e4 LT |
381 | } |
382 | ||
d296d30a | 383 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 384 | fsd.fsd_dmstate); |
1da177e4 | 385 | |
6e7f75ea | 386 | out: |
d296d30a | 387 | dput(dentry); |
6e7f75ea | 388 | return error; |
1da177e4 LT |
389 | } |
390 | ||
391 | STATIC int | |
392 | xfs_attrlist_by_handle( | |
d296d30a CH |
393 | struct file *parfilp, |
394 | void __user *arg) | |
1da177e4 | 395 | { |
d296d30a | 396 | int error = -ENOMEM; |
1da177e4 LT |
397 | attrlist_cursor_kern_t *cursor; |
398 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 399 | struct dentry *dentry; |
1da177e4 LT |
400 | char *kbuf; |
401 | ||
402 | if (!capable(CAP_SYS_ADMIN)) | |
403 | return -XFS_ERROR(EPERM); | |
404 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
405 | return -XFS_ERROR(EFAULT); | |
406 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
407 | return -XFS_ERROR(EINVAL); | |
408 | ||
90ad58a8 CH |
409 | /* |
410 | * Reject flags, only allow namespaces. | |
411 | */ | |
412 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
413 | return -XFS_ERROR(EINVAL); | |
414 | ||
d296d30a CH |
415 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
416 | if (IS_ERR(dentry)) | |
417 | return PTR_ERR(dentry); | |
1da177e4 LT |
418 | |
419 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
420 | if (!kbuf) | |
d296d30a | 421 | goto out_dput; |
1da177e4 LT |
422 | |
423 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 424 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 425 | al_hreq.flags, cursor); |
1da177e4 LT |
426 | if (error) |
427 | goto out_kfree; | |
428 | ||
429 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
430 | error = -EFAULT; | |
431 | ||
432 | out_kfree: | |
433 | kfree(kbuf); | |
d296d30a CH |
434 | out_dput: |
435 | dput(dentry); | |
436 | return error; | |
1da177e4 LT |
437 | } |
438 | ||
28750975 | 439 | int |
1da177e4 | 440 | xfs_attrmulti_attr_get( |
739bfb2a | 441 | struct inode *inode, |
a9273ca5 DC |
442 | unsigned char *name, |
443 | unsigned char __user *ubuf, | |
1da177e4 LT |
444 | __uint32_t *len, |
445 | __uint32_t flags) | |
446 | { | |
a9273ca5 | 447 | unsigned char *kbuf; |
1da177e4 | 448 | int error = EFAULT; |
e8b0ebaa | 449 | |
1da177e4 LT |
450 | if (*len > XATTR_SIZE_MAX) |
451 | return EINVAL; | |
452 | kbuf = kmalloc(*len, GFP_KERNEL); | |
453 | if (!kbuf) | |
454 | return ENOMEM; | |
455 | ||
e8b0ebaa | 456 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
457 | if (error) |
458 | goto out_kfree; | |
459 | ||
460 | if (copy_to_user(ubuf, kbuf, *len)) | |
461 | error = EFAULT; | |
462 | ||
463 | out_kfree: | |
464 | kfree(kbuf); | |
465 | return error; | |
466 | } | |
467 | ||
28750975 | 468 | int |
1da177e4 | 469 | xfs_attrmulti_attr_set( |
739bfb2a | 470 | struct inode *inode, |
a9273ca5 DC |
471 | unsigned char *name, |
472 | const unsigned char __user *ubuf, | |
1da177e4 LT |
473 | __uint32_t len, |
474 | __uint32_t flags) | |
475 | { | |
a9273ca5 | 476 | unsigned char *kbuf; |
1da177e4 LT |
477 | int error = EFAULT; |
478 | ||
739bfb2a | 479 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
480 | return EPERM; |
481 | if (len > XATTR_SIZE_MAX) | |
482 | return EINVAL; | |
483 | ||
0e639bde LZ |
484 | kbuf = memdup_user(ubuf, len); |
485 | if (IS_ERR(kbuf)) | |
486 | return PTR_ERR(kbuf); | |
e8b0ebaa | 487 | |
739bfb2a | 488 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 | 489 | |
1da177e4 LT |
490 | return error; |
491 | } | |
492 | ||
28750975 | 493 | int |
1da177e4 | 494 | xfs_attrmulti_attr_remove( |
739bfb2a | 495 | struct inode *inode, |
a9273ca5 | 496 | unsigned char *name, |
1da177e4 LT |
497 | __uint32_t flags) |
498 | { | |
739bfb2a | 499 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 500 | return EPERM; |
739bfb2a | 501 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
502 | } |
503 | ||
504 | STATIC int | |
505 | xfs_attrmulti_by_handle( | |
42a74f20 | 506 | struct file *parfilp, |
d296d30a | 507 | void __user *arg) |
1da177e4 LT |
508 | { |
509 | int error; | |
510 | xfs_attr_multiop_t *ops; | |
511 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 512 | struct dentry *dentry; |
1da177e4 | 513 | unsigned int i, size; |
a9273ca5 | 514 | unsigned char *attr_name; |
1da177e4 LT |
515 | |
516 | if (!capable(CAP_SYS_ADMIN)) | |
517 | return -XFS_ERROR(EPERM); | |
518 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
519 | return -XFS_ERROR(EFAULT); | |
520 | ||
fda168c2 ZW |
521 | /* overflow check */ |
522 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
523 | return -E2BIG; | |
524 | ||
d296d30a CH |
525 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
526 | if (IS_ERR(dentry)) | |
527 | return PTR_ERR(dentry); | |
1da177e4 LT |
528 | |
529 | error = E2BIG; | |
e182f57a | 530 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 531 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 532 | goto out_dput; |
1da177e4 | 533 | |
0e639bde LZ |
534 | ops = memdup_user(am_hreq.ops, size); |
535 | if (IS_ERR(ops)) { | |
536 | error = PTR_ERR(ops); | |
d296d30a | 537 | goto out_dput; |
0e639bde | 538 | } |
1da177e4 LT |
539 | |
540 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
541 | if (!attr_name) | |
542 | goto out_kfree_ops; | |
543 | ||
1da177e4 LT |
544 | error = 0; |
545 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 546 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
547 | ops[i].am_attrname, MAXNAMELEN); |
548 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
549 | error = -ERANGE; | |
550 | if (ops[i].am_error < 0) | |
551 | break; | |
552 | ||
553 | switch (ops[i].am_opcode) { | |
554 | case ATTR_OP_GET: | |
d296d30a CH |
555 | ops[i].am_error = xfs_attrmulti_attr_get( |
556 | dentry->d_inode, attr_name, | |
557 | ops[i].am_attrvalue, &ops[i].am_length, | |
558 | ops[i].am_flags); | |
1da177e4 LT |
559 | break; |
560 | case ATTR_OP_SET: | |
42a74f20 DH |
561 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
562 | if (ops[i].am_error) | |
563 | break; | |
d296d30a CH |
564 | ops[i].am_error = xfs_attrmulti_attr_set( |
565 | dentry->d_inode, attr_name, | |
566 | ops[i].am_attrvalue, ops[i].am_length, | |
567 | ops[i].am_flags); | |
42a74f20 | 568 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
569 | break; |
570 | case ATTR_OP_REMOVE: | |
42a74f20 DH |
571 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
572 | if (ops[i].am_error) | |
573 | break; | |
d296d30a CH |
574 | ops[i].am_error = xfs_attrmulti_attr_remove( |
575 | dentry->d_inode, attr_name, | |
576 | ops[i].am_flags); | |
42a74f20 | 577 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
578 | break; |
579 | default: | |
580 | ops[i].am_error = EINVAL; | |
581 | } | |
582 | } | |
583 | ||
584 | if (copy_to_user(am_hreq.ops, ops, size)) | |
585 | error = XFS_ERROR(EFAULT); | |
586 | ||
587 | kfree(attr_name); | |
588 | out_kfree_ops: | |
589 | kfree(ops); | |
d296d30a CH |
590 | out_dput: |
591 | dput(dentry); | |
1da177e4 LT |
592 | return -error; |
593 | } | |
594 | ||
d5547f9f | 595 | int |
1da177e4 | 596 | xfs_ioc_space( |
993386c1 | 597 | struct xfs_inode *ip, |
f37ea149 | 598 | struct inode *inode, |
1da177e4 LT |
599 | struct file *filp, |
600 | int ioflags, | |
601 | unsigned int cmd, | |
743bb465 | 602 | xfs_flock64_t *bf) |
1da177e4 | 603 | { |
1da177e4 LT |
604 | int attr_flags = 0; |
605 | int error; | |
606 | ||
743bb465 | 607 | /* |
608 | * Only allow the sys admin to reserve space unless | |
609 | * unwritten extents are enabled. | |
610 | */ | |
611 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
612 | !capable(CAP_SYS_ADMIN)) | |
613 | return -XFS_ERROR(EPERM); | |
614 | ||
f37ea149 | 615 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
616 | return -XFS_ERROR(EPERM); |
617 | ||
ad4a8ac4 | 618 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
619 | return -XFS_ERROR(EBADF); |
620 | ||
f37ea149 | 621 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
622 | return -XFS_ERROR(EINVAL); |
623 | ||
1da177e4 | 624 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 625 | attr_flags |= XFS_ATTR_NONBLOCK; |
1da177e4 | 626 | if (ioflags & IO_INVIS) |
0f285c8a | 627 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 628 | |
743bb465 | 629 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
1da177e4 LT |
630 | return -error; |
631 | } | |
632 | ||
633 | STATIC int | |
634 | xfs_ioc_bulkstat( | |
635 | xfs_mount_t *mp, | |
636 | unsigned int cmd, | |
637 | void __user *arg) | |
638 | { | |
639 | xfs_fsop_bulkreq_t bulkreq; | |
640 | int count; /* # of records returned */ | |
641 | xfs_ino_t inlast; /* last inode number */ | |
642 | int done; | |
643 | int error; | |
644 | ||
645 | /* done = 1 if there are more stats to get and if bulkstat */ | |
646 | /* should be called again (unused here, but used in dmapi) */ | |
647 | ||
648 | if (!capable(CAP_SYS_ADMIN)) | |
649 | return -EPERM; | |
650 | ||
651 | if (XFS_FORCED_SHUTDOWN(mp)) | |
652 | return -XFS_ERROR(EIO); | |
653 | ||
654 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
655 | return -XFS_ERROR(EFAULT); | |
656 | ||
657 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
658 | return -XFS_ERROR(EFAULT); | |
659 | ||
660 | if ((count = bulkreq.icount) <= 0) | |
661 | return -XFS_ERROR(EINVAL); | |
662 | ||
cd57e594 LM |
663 | if (bulkreq.ubuffer == NULL) |
664 | return -XFS_ERROR(EINVAL); | |
665 | ||
1da177e4 LT |
666 | if (cmd == XFS_IOC_FSINUMBERS) |
667 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 668 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
669 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
670 | error = xfs_bulkstat_single(mp, &inlast, | |
671 | bulkreq.ubuffer, &done); | |
cd57e594 | 672 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
673 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
674 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
675 | &done); | |
1da177e4 LT |
676 | |
677 | if (error) | |
678 | return -error; | |
679 | ||
680 | if (bulkreq.ocount != NULL) { | |
681 | if (copy_to_user(bulkreq.lastip, &inlast, | |
682 | sizeof(xfs_ino_t))) | |
683 | return -XFS_ERROR(EFAULT); | |
684 | ||
685 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
686 | return -XFS_ERROR(EFAULT); | |
687 | } | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
692 | STATIC int | |
693 | xfs_ioc_fsgeometry_v1( | |
694 | xfs_mount_t *mp, | |
695 | void __user *arg) | |
696 | { | |
697 | xfs_fsop_geom_v1_t fsgeo; | |
698 | int error; | |
699 | ||
700 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
701 | if (error) | |
702 | return -error; | |
703 | ||
704 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
705 | return -XFS_ERROR(EFAULT); | |
706 | return 0; | |
707 | } | |
708 | ||
709 | STATIC int | |
710 | xfs_ioc_fsgeometry( | |
711 | xfs_mount_t *mp, | |
712 | void __user *arg) | |
713 | { | |
714 | xfs_fsop_geom_t fsgeo; | |
715 | int error; | |
716 | ||
717 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
718 | if (error) | |
719 | return -error; | |
720 | ||
721 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
722 | return -XFS_ERROR(EFAULT); | |
723 | return 0; | |
724 | } | |
725 | ||
726 | /* | |
727 | * Linux extended inode flags interface. | |
728 | */ | |
1da177e4 LT |
729 | |
730 | STATIC unsigned int | |
731 | xfs_merge_ioc_xflags( | |
732 | unsigned int flags, | |
733 | unsigned int start) | |
734 | { | |
735 | unsigned int xflags = start; | |
736 | ||
39058a0e | 737 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
738 | xflags |= XFS_XFLAG_IMMUTABLE; |
739 | else | |
740 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 741 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
742 | xflags |= XFS_XFLAG_APPEND; |
743 | else | |
744 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 745 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
746 | xflags |= XFS_XFLAG_SYNC; |
747 | else | |
748 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 749 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
750 | xflags |= XFS_XFLAG_NOATIME; |
751 | else | |
752 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 753 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
754 | xflags |= XFS_XFLAG_NODUMP; |
755 | else | |
756 | xflags &= ~XFS_XFLAG_NODUMP; | |
757 | ||
758 | return xflags; | |
759 | } | |
760 | ||
761 | STATIC unsigned int | |
762 | xfs_di2lxflags( | |
763 | __uint16_t di_flags) | |
764 | { | |
765 | unsigned int flags = 0; | |
766 | ||
767 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 768 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 769 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 770 | flags |= FS_APPEND_FL; |
1da177e4 | 771 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 772 | flags |= FS_SYNC_FL; |
1da177e4 | 773 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 774 | flags |= FS_NOATIME_FL; |
1da177e4 | 775 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 776 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
777 | return flags; |
778 | } | |
779 | ||
c83bfab1 CH |
780 | STATIC int |
781 | xfs_ioc_fsgetxattr( | |
782 | xfs_inode_t *ip, | |
783 | int attr, | |
784 | void __user *arg) | |
785 | { | |
786 | struct fsxattr fa; | |
787 | ||
a122eb2f DR |
788 | memset(&fa, 0, sizeof(struct fsxattr)); |
789 | ||
c83bfab1 CH |
790 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
791 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
792 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
793 | fa.fsx_projid = ip->i_d.di_projid; | |
794 | ||
795 | if (attr) { | |
796 | if (ip->i_afp) { | |
797 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
798 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
799 | sizeof(xfs_bmbt_rec_t); | |
800 | else | |
801 | fa.fsx_nextents = ip->i_d.di_anextents; | |
802 | } else | |
803 | fa.fsx_nextents = 0; | |
804 | } else { | |
805 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
806 | fa.fsx_nextents = ip->i_df.if_bytes / | |
807 | sizeof(xfs_bmbt_rec_t); | |
808 | else | |
809 | fa.fsx_nextents = ip->i_d.di_nextents; | |
810 | } | |
811 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
812 | ||
813 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
814 | return -EFAULT; | |
815 | return 0; | |
816 | } | |
817 | ||
25fe55e8 CH |
818 | STATIC void |
819 | xfs_set_diflags( | |
820 | struct xfs_inode *ip, | |
821 | unsigned int xflags) | |
822 | { | |
823 | unsigned int di_flags; | |
824 | ||
825 | /* can't set PREALLOC this way, just preserve it */ | |
826 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
827 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
828 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
829 | if (xflags & XFS_XFLAG_APPEND) | |
830 | di_flags |= XFS_DIFLAG_APPEND; | |
831 | if (xflags & XFS_XFLAG_SYNC) | |
832 | di_flags |= XFS_DIFLAG_SYNC; | |
833 | if (xflags & XFS_XFLAG_NOATIME) | |
834 | di_flags |= XFS_DIFLAG_NOATIME; | |
835 | if (xflags & XFS_XFLAG_NODUMP) | |
836 | di_flags |= XFS_DIFLAG_NODUMP; | |
837 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
838 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
839 | if (xflags & XFS_XFLAG_NODEFRAG) | |
840 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
841 | if (xflags & XFS_XFLAG_FILESTREAM) | |
842 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
843 | if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { | |
844 | if (xflags & XFS_XFLAG_RTINHERIT) | |
845 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
846 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
847 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
848 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
849 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
850 | } else if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { | |
851 | if (xflags & XFS_XFLAG_REALTIME) | |
852 | di_flags |= XFS_DIFLAG_REALTIME; | |
853 | if (xflags & XFS_XFLAG_EXTSIZE) | |
854 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
855 | } | |
856 | ||
857 | ip->i_d.di_flags = di_flags; | |
858 | } | |
859 | ||
f13fae2d CH |
860 | STATIC void |
861 | xfs_diflags_to_linux( | |
862 | struct xfs_inode *ip) | |
863 | { | |
e4f75291 | 864 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
865 | unsigned int xflags = xfs_ip2xflags(ip); |
866 | ||
867 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
868 | inode->i_flags |= S_IMMUTABLE; | |
869 | else | |
870 | inode->i_flags &= ~S_IMMUTABLE; | |
871 | if (xflags & XFS_XFLAG_APPEND) | |
872 | inode->i_flags |= S_APPEND; | |
873 | else | |
874 | inode->i_flags &= ~S_APPEND; | |
875 | if (xflags & XFS_XFLAG_SYNC) | |
876 | inode->i_flags |= S_SYNC; | |
877 | else | |
878 | inode->i_flags &= ~S_SYNC; | |
879 | if (xflags & XFS_XFLAG_NOATIME) | |
880 | inode->i_flags |= S_NOATIME; | |
881 | else | |
882 | inode->i_flags &= ~S_NOATIME; | |
883 | } | |
25fe55e8 CH |
884 | |
885 | #define FSX_PROJID 1 | |
886 | #define FSX_EXTSIZE 2 | |
887 | #define FSX_XFLAGS 4 | |
888 | #define FSX_NONBLOCK 8 | |
889 | ||
890 | STATIC int | |
891 | xfs_ioctl_setattr( | |
892 | xfs_inode_t *ip, | |
893 | struct fsxattr *fa, | |
894 | int mask) | |
895 | { | |
896 | struct xfs_mount *mp = ip->i_mount; | |
897 | struct xfs_trans *tp; | |
898 | unsigned int lock_flags = 0; | |
7d095257 CH |
899 | struct xfs_dquot *udqp = NULL; |
900 | struct xfs_dquot *gdqp = NULL; | |
25fe55e8 CH |
901 | struct xfs_dquot *olddquot = NULL; |
902 | int code; | |
903 | ||
cca28fb8 | 904 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 CH |
905 | |
906 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
907 | return XFS_ERROR(EROFS); | |
908 | if (XFS_FORCED_SHUTDOWN(mp)) | |
909 | return XFS_ERROR(EIO); | |
910 | ||
23963e54 AM |
911 | /* |
912 | * Disallow 32bit project ids because on-disk structure | |
913 | * is 16bit only. | |
914 | */ | |
915 | if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1)) | |
916 | return XFS_ERROR(EINVAL); | |
917 | ||
25fe55e8 CH |
918 | /* |
919 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
920 | * before we start any other transactions. Trying to do this later | |
921 | * is messy. We don't care to take a readlock to look at the ids | |
922 | * in inode here, because we can't hold it across the trans_reserve. | |
923 | * If the IDs do change before we take the ilock, we're covered | |
924 | * because the i_*dquot fields will get updated anyway. | |
925 | */ | |
926 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
7d095257 | 927 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 CH |
928 | ip->i_d.di_gid, fa->fsx_projid, |
929 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
930 | if (code) | |
931 | return code; | |
932 | } | |
933 | ||
934 | /* | |
935 | * For the other attributes, we acquire the inode lock and | |
936 | * first do an error checking pass. | |
937 | */ | |
938 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
939 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
940 | if (code) | |
941 | goto error_return; | |
942 | ||
943 | lock_flags = XFS_ILOCK_EXCL; | |
944 | xfs_ilock(ip, lock_flags); | |
945 | ||
946 | /* | |
947 | * CAP_FOWNER overrides the following restrictions: | |
948 | * | |
949 | * The user ID of the calling process must be equal | |
950 | * to the file owner ID, except in cases where the | |
951 | * CAP_FSETID capability is applicable. | |
952 | */ | |
91b77712 | 953 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
954 | code = XFS_ERROR(EPERM); |
955 | goto error_return; | |
956 | } | |
957 | ||
958 | /* | |
959 | * Do a quota reservation only if projid is actually going to change. | |
960 | */ | |
961 | if (mask & FSX_PROJID) { | |
7d095257 CH |
962 | if (XFS_IS_QUOTA_RUNNING(mp) && |
963 | XFS_IS_PQUOTA_ON(mp) && | |
25fe55e8 CH |
964 | ip->i_d.di_projid != fa->fsx_projid) { |
965 | ASSERT(tp); | |
7d095257 | 966 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, |
25fe55e8 CH |
967 | capable(CAP_FOWNER) ? |
968 | XFS_QMOPT_FORCE_RES : 0); | |
969 | if (code) /* out of quota */ | |
970 | goto error_return; | |
971 | } | |
972 | } | |
973 | ||
974 | if (mask & FSX_EXTSIZE) { | |
975 | /* | |
976 | * Can't change extent size if any extents are allocated. | |
977 | */ | |
978 | if (ip->i_d.di_nextents && | |
979 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
980 | fa->fsx_extsize)) { | |
981 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
982 | goto error_return; | |
983 | } | |
984 | ||
985 | /* | |
986 | * Extent size must be a multiple of the appropriate block | |
987 | * size, if set at all. | |
988 | */ | |
989 | if (fa->fsx_extsize != 0) { | |
990 | xfs_extlen_t size; | |
991 | ||
992 | if (XFS_IS_REALTIME_INODE(ip) || | |
993 | ((mask & FSX_XFLAGS) && | |
994 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
995 | size = mp->m_sb.sb_rextsize << | |
996 | mp->m_sb.sb_blocklog; | |
997 | } else { | |
998 | size = mp->m_sb.sb_blocksize; | |
999 | } | |
1000 | ||
1001 | if (fa->fsx_extsize % size) { | |
1002 | code = XFS_ERROR(EINVAL); | |
1003 | goto error_return; | |
1004 | } | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | ||
1009 | if (mask & FSX_XFLAGS) { | |
1010 | /* | |
1011 | * Can't change realtime flag if any extents are allocated. | |
1012 | */ | |
1013 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1014 | (XFS_IS_REALTIME_INODE(ip)) != | |
1015 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1016 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1017 | goto error_return; | |
1018 | } | |
1019 | ||
1020 | /* | |
1021 | * If realtime flag is set then must have realtime data. | |
1022 | */ | |
1023 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1024 | if ((mp->m_sb.sb_rblocks == 0) || | |
1025 | (mp->m_sb.sb_rextsize == 0) || | |
1026 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1027 | code = XFS_ERROR(EINVAL); | |
1028 | goto error_return; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | /* | |
1033 | * Can't modify an immutable/append-only file unless | |
1034 | * we have appropriate permission. | |
1035 | */ | |
1036 | if ((ip->i_d.di_flags & | |
1037 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1038 | (fa->fsx_xflags & | |
1039 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1040 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1041 | code = XFS_ERROR(EPERM); | |
1042 | goto error_return; | |
1043 | } | |
1044 | } | |
1045 | ||
898621d5 | 1046 | xfs_trans_ijoin(tp, ip); |
25fe55e8 CH |
1047 | |
1048 | /* | |
1049 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1050 | */ |
1051 | if (mask & FSX_PROJID) { | |
1052 | /* | |
1053 | * CAP_FSETID overrides the following restrictions: | |
1054 | * | |
1055 | * The set-user-ID and set-group-ID bits of a file will be | |
1056 | * cleared upon successful return from chown() | |
1057 | */ | |
1058 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1059 | !capable(CAP_FSETID)) | |
1060 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1061 | ||
1062 | /* | |
1063 | * Change the ownerships and register quota modifications | |
1064 | * in the transaction. | |
1065 | */ | |
1066 | if (ip->i_d.di_projid != fa->fsx_projid) { | |
7d095257 CH |
1067 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1068 | olddquot = xfs_qm_vop_chown(tp, ip, | |
25fe55e8 CH |
1069 | &ip->i_gdquot, gdqp); |
1070 | } | |
1071 | ip->i_d.di_projid = fa->fsx_projid; | |
1072 | ||
1073 | /* | |
1074 | * We may have to rev the inode as well as | |
1075 | * the superblock version number since projids didn't | |
1076 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1077 | */ | |
51ce16d5 | 1078 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1079 | xfs_bump_ino_vers2(tp, ip); |
1080 | } | |
1081 | ||
1082 | } | |
1083 | ||
1084 | if (mask & FSX_EXTSIZE) | |
1085 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1086 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1087 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1088 | xfs_diflags_to_linux(ip); |
1089 | } | |
25fe55e8 CH |
1090 | |
1091 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1092 | xfs_ichgtime(ip, XFS_ICHGTIME_CHG); | |
1093 | ||
1094 | XFS_STATS_INC(xs_ig_attrchg); | |
1095 | ||
1096 | /* | |
1097 | * If this is a synchronous mount, make sure that the | |
1098 | * transaction goes to disk before returning to the user. | |
1099 | * This is slightly sub-optimal in that truncates require | |
1100 | * two sync transactions instead of one for wsync filesystems. | |
1101 | * One for the truncate and one for the timestamps since we | |
1102 | * don't want to change the timestamps unless we're sure the | |
1103 | * truncate worked. Truncates are less than 1% of the laddis | |
1104 | * mix so this probably isn't worth the trouble to optimize. | |
1105 | */ | |
1106 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1107 | xfs_trans_set_sync(tp); | |
1108 | code = xfs_trans_commit(tp, 0); | |
1109 | xfs_iunlock(ip, lock_flags); | |
1110 | ||
1111 | /* | |
1112 | * Release any dquot(s) the inode had kept before chown. | |
1113 | */ | |
7d095257 CH |
1114 | xfs_qm_dqrele(olddquot); |
1115 | xfs_qm_dqrele(udqp); | |
1116 | xfs_qm_dqrele(gdqp); | |
25fe55e8 | 1117 | |
288699fe | 1118 | return code; |
25fe55e8 CH |
1119 | |
1120 | error_return: | |
7d095257 CH |
1121 | xfs_qm_dqrele(udqp); |
1122 | xfs_qm_dqrele(gdqp); | |
25fe55e8 CH |
1123 | xfs_trans_cancel(tp, 0); |
1124 | if (lock_flags) | |
1125 | xfs_iunlock(ip, lock_flags); | |
1126 | return code; | |
1127 | } | |
1128 | ||
1da177e4 | 1129 | STATIC int |
df26cfe8 | 1130 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1131 | xfs_inode_t *ip, |
1132 | struct file *filp, | |
1da177e4 LT |
1133 | void __user *arg) |
1134 | { | |
1135 | struct fsxattr fa; | |
25fe55e8 | 1136 | unsigned int mask; |
df26cfe8 LM |
1137 | |
1138 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1139 | return -EFAULT; | |
1da177e4 | 1140 | |
25fe55e8 | 1141 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1142 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1143 | mask |= FSX_NONBLOCK; |
1da177e4 | 1144 | |
25fe55e8 | 1145 | return -xfs_ioctl_setattr(ip, &fa, mask); |
df26cfe8 | 1146 | } |
1da177e4 | 1147 | |
df26cfe8 LM |
1148 | STATIC int |
1149 | xfs_ioc_getxflags( | |
1150 | xfs_inode_t *ip, | |
1151 | void __user *arg) | |
1152 | { | |
1153 | unsigned int flags; | |
1da177e4 | 1154 | |
df26cfe8 LM |
1155 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1156 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1157 | return -EFAULT; | |
1158 | return 0; | |
1159 | } | |
1da177e4 | 1160 | |
df26cfe8 LM |
1161 | STATIC int |
1162 | xfs_ioc_setxflags( | |
1163 | xfs_inode_t *ip, | |
1164 | struct file *filp, | |
1165 | void __user *arg) | |
1166 | { | |
25fe55e8 | 1167 | struct fsxattr fa; |
df26cfe8 | 1168 | unsigned int flags; |
25fe55e8 | 1169 | unsigned int mask; |
1da177e4 | 1170 | |
df26cfe8 LM |
1171 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1172 | return -EFAULT; | |
1da177e4 | 1173 | |
df26cfe8 LM |
1174 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1175 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1176 | FS_SYNC_FL)) | |
1177 | return -EOPNOTSUPP; | |
1da177e4 | 1178 | |
25fe55e8 | 1179 | mask = FSX_XFLAGS; |
df26cfe8 | 1180 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1181 | mask |= FSX_NONBLOCK; |
1182 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1183 | |
25fe55e8 | 1184 | return -xfs_ioctl_setattr(ip, &fa, mask); |
1da177e4 LT |
1185 | } |
1186 | ||
8a7141a8 ES |
1187 | STATIC int |
1188 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1189 | { | |
1190 | struct getbmap __user *base = *ap; | |
1191 | ||
1192 | /* copy only getbmap portion (not getbmapx) */ | |
1193 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1194 | return XFS_ERROR(EFAULT); | |
1195 | ||
1196 | *ap += sizeof(struct getbmap); | |
1197 | return 0; | |
1198 | } | |
1199 | ||
1da177e4 LT |
1200 | STATIC int |
1201 | xfs_ioc_getbmap( | |
993386c1 | 1202 | struct xfs_inode *ip, |
1da177e4 LT |
1203 | int ioflags, |
1204 | unsigned int cmd, | |
1205 | void __user *arg) | |
1206 | { | |
8a7141a8 | 1207 | struct getbmapx bmx; |
1da177e4 LT |
1208 | int error; |
1209 | ||
8a7141a8 | 1210 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1211 | return -XFS_ERROR(EFAULT); |
1212 | ||
8a7141a8 | 1213 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1214 | return -XFS_ERROR(EINVAL); |
1215 | ||
8a7141a8 | 1216 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1217 | if (ioflags & IO_INVIS) |
8a7141a8 | 1218 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1219 | |
8a7141a8 ES |
1220 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1221 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1222 | if (error) |
1223 | return -error; | |
1224 | ||
8a7141a8 ES |
1225 | /* copy back header - only size of getbmap */ |
1226 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1227 | return -XFS_ERROR(EFAULT); |
1228 | return 0; | |
1229 | } | |
1230 | ||
8a7141a8 ES |
1231 | STATIC int |
1232 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1233 | { | |
1234 | struct getbmapx __user *base = *ap; | |
1235 | ||
1236 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1237 | return XFS_ERROR(EFAULT); | |
1238 | ||
1239 | *ap += sizeof(struct getbmapx); | |
1240 | return 0; | |
1241 | } | |
1242 | ||
1da177e4 LT |
1243 | STATIC int |
1244 | xfs_ioc_getbmapx( | |
993386c1 | 1245 | struct xfs_inode *ip, |
1da177e4 LT |
1246 | void __user *arg) |
1247 | { | |
1248 | struct getbmapx bmx; | |
1da177e4 LT |
1249 | int error; |
1250 | ||
1251 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1252 | return -XFS_ERROR(EFAULT); | |
1253 | ||
1254 | if (bmx.bmv_count < 2) | |
1255 | return -XFS_ERROR(EINVAL); | |
1256 | ||
8a7141a8 | 1257 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1258 | return -XFS_ERROR(EINVAL); |
1259 | ||
8a7141a8 ES |
1260 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1261 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1262 | if (error) |
1263 | return -error; | |
1264 | ||
8a7141a8 ES |
1265 | /* copy back header */ |
1266 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1267 | return -XFS_ERROR(EFAULT); |
1268 | ||
1269 | return 0; | |
1270 | } | |
df26cfe8 | 1271 | |
4d4be482 CH |
1272 | /* |
1273 | * Note: some of the ioctl's return positive numbers as a | |
1274 | * byte count indicating success, such as readlink_by_handle. | |
1275 | * So we don't "sign flip" like most other routines. This means | |
1276 | * true errors need to be returned as a negative value. | |
1277 | */ | |
1278 | long | |
1279 | xfs_file_ioctl( | |
df26cfe8 | 1280 | struct file *filp, |
df26cfe8 | 1281 | unsigned int cmd, |
4d4be482 | 1282 | unsigned long p) |
df26cfe8 LM |
1283 | { |
1284 | struct inode *inode = filp->f_path.dentry->d_inode; | |
4d4be482 CH |
1285 | struct xfs_inode *ip = XFS_I(inode); |
1286 | struct xfs_mount *mp = ip->i_mount; | |
1287 | void __user *arg = (void __user *)p; | |
1288 | int ioflags = 0; | |
df26cfe8 LM |
1289 | int error; |
1290 | ||
4d4be482 CH |
1291 | if (filp->f_mode & FMODE_NOCMTIME) |
1292 | ioflags |= IO_INVIS; | |
df26cfe8 | 1293 | |
cca28fb8 | 1294 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1295 | |
1296 | switch (cmd) { | |
df26cfe8 LM |
1297 | case XFS_IOC_ALLOCSP: |
1298 | case XFS_IOC_FREESP: | |
1299 | case XFS_IOC_RESVSP: | |
1300 | case XFS_IOC_UNRESVSP: | |
1301 | case XFS_IOC_ALLOCSP64: | |
1302 | case XFS_IOC_FREESP64: | |
1303 | case XFS_IOC_RESVSP64: | |
743bb465 | 1304 | case XFS_IOC_UNRESVSP64: { |
1305 | xfs_flock64_t bf; | |
df26cfe8 | 1306 | |
743bb465 | 1307 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1308 | return -XFS_ERROR(EFAULT); | |
1309 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1310 | } | |
df26cfe8 LM |
1311 | case XFS_IOC_DIOINFO: { |
1312 | struct dioattr da; | |
1313 | xfs_buftarg_t *target = | |
1314 | XFS_IS_REALTIME_INODE(ip) ? | |
1315 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1316 | ||
1317 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1318 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1319 | ||
1320 | if (copy_to_user(arg, &da, sizeof(da))) | |
1321 | return -XFS_ERROR(EFAULT); | |
1322 | return 0; | |
1323 | } | |
1324 | ||
1325 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1326 | case XFS_IOC_FSBULKSTAT: | |
1327 | case XFS_IOC_FSINUMBERS: | |
1328 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1329 | ||
1330 | case XFS_IOC_FSGEOMETRY_V1: | |
1331 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1332 | ||
1333 | case XFS_IOC_FSGEOMETRY: | |
1334 | return xfs_ioc_fsgeometry(mp, arg); | |
1335 | ||
1336 | case XFS_IOC_GETVERSION: | |
1337 | return put_user(inode->i_generation, (int __user *)arg); | |
1338 | ||
1339 | case XFS_IOC_FSGETXATTR: | |
1340 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1341 | case XFS_IOC_FSGETXATTRA: | |
1342 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1343 | case XFS_IOC_FSSETXATTR: |
1344 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1345 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1346 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1347 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1348 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1349 | |
1350 | case XFS_IOC_FSSETDM: { | |
1351 | struct fsdmidata dmi; | |
1352 | ||
1353 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1354 | return -XFS_ERROR(EFAULT); | |
1355 | ||
1356 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1357 | dmi.fsd_dmstate); | |
1358 | return -error; | |
1359 | } | |
1360 | ||
1361 | case XFS_IOC_GETBMAP: | |
1362 | case XFS_IOC_GETBMAPA: | |
1363 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1364 | ||
1365 | case XFS_IOC_GETBMAPX: | |
1366 | return xfs_ioc_getbmapx(ip, arg); | |
1367 | ||
1368 | case XFS_IOC_FD_TO_HANDLE: | |
1369 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1370 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1371 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1372 | |
743bb465 | 1373 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1374 | return -XFS_ERROR(EFAULT); | |
1375 | return xfs_find_handle(cmd, &hreq); | |
1376 | } | |
1377 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1378 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1379 | |
743bb465 | 1380 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1381 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1382 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1383 | } |
df26cfe8 | 1384 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1385 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1386 | |
743bb465 | 1387 | case XFS_IOC_READLINK_BY_HANDLE: { |
1388 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1389 | |
743bb465 | 1390 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1391 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1392 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1393 | } |
df26cfe8 | 1394 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1395 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1396 | |
1397 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1398 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1399 | |
1400 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1401 | struct xfs_swapext sxp; |
1402 | ||
1403 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1404 | return -XFS_ERROR(EFAULT); | |
1405 | error = xfs_swapext(&sxp); | |
df26cfe8 LM |
1406 | return -error; |
1407 | } | |
1408 | ||
1409 | case XFS_IOC_FSCOUNTS: { | |
1410 | xfs_fsop_counts_t out; | |
1411 | ||
1412 | error = xfs_fs_counts(mp, &out); | |
1413 | if (error) | |
1414 | return -error; | |
1415 | ||
1416 | if (copy_to_user(arg, &out, sizeof(out))) | |
1417 | return -XFS_ERROR(EFAULT); | |
1418 | return 0; | |
1419 | } | |
1420 | ||
1421 | case XFS_IOC_SET_RESBLKS: { | |
1422 | xfs_fsop_resblks_t inout; | |
1423 | __uint64_t in; | |
1424 | ||
1425 | if (!capable(CAP_SYS_ADMIN)) | |
1426 | return -EPERM; | |
1427 | ||
d5db0f97 ES |
1428 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
1429 | return -XFS_ERROR(EROFS); | |
1430 | ||
df26cfe8 LM |
1431 | if (copy_from_user(&inout, arg, sizeof(inout))) |
1432 | return -XFS_ERROR(EFAULT); | |
1433 | ||
1434 | /* input parameter is passed in resblks field of structure */ | |
1435 | in = inout.resblks; | |
1436 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1437 | if (error) | |
1438 | return -error; | |
1439 | ||
1440 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1441 | return -XFS_ERROR(EFAULT); | |
1442 | return 0; | |
1443 | } | |
1444 | ||
1445 | case XFS_IOC_GET_RESBLKS: { | |
1446 | xfs_fsop_resblks_t out; | |
1447 | ||
1448 | if (!capable(CAP_SYS_ADMIN)) | |
1449 | return -EPERM; | |
1450 | ||
1451 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1452 | if (error) | |
1453 | return -error; | |
1454 | ||
1455 | if (copy_to_user(arg, &out, sizeof(out))) | |
1456 | return -XFS_ERROR(EFAULT); | |
1457 | ||
1458 | return 0; | |
1459 | } | |
1460 | ||
1461 | case XFS_IOC_FSGROWFSDATA: { | |
1462 | xfs_growfs_data_t in; | |
1463 | ||
df26cfe8 LM |
1464 | if (copy_from_user(&in, arg, sizeof(in))) |
1465 | return -XFS_ERROR(EFAULT); | |
1466 | ||
1467 | error = xfs_growfs_data(mp, &in); | |
1468 | return -error; | |
1469 | } | |
1470 | ||
1471 | case XFS_IOC_FSGROWFSLOG: { | |
1472 | xfs_growfs_log_t in; | |
1473 | ||
df26cfe8 LM |
1474 | if (copy_from_user(&in, arg, sizeof(in))) |
1475 | return -XFS_ERROR(EFAULT); | |
1476 | ||
1477 | error = xfs_growfs_log(mp, &in); | |
1478 | return -error; | |
1479 | } | |
1480 | ||
1481 | case XFS_IOC_FSGROWFSRT: { | |
1482 | xfs_growfs_rt_t in; | |
1483 | ||
df26cfe8 LM |
1484 | if (copy_from_user(&in, arg, sizeof(in))) |
1485 | return -XFS_ERROR(EFAULT); | |
1486 | ||
1487 | error = xfs_growfs_rt(mp, &in); | |
1488 | return -error; | |
1489 | } | |
1490 | ||
df26cfe8 LM |
1491 | case XFS_IOC_GOINGDOWN: { |
1492 | __uint32_t in; | |
1493 | ||
1494 | if (!capable(CAP_SYS_ADMIN)) | |
1495 | return -EPERM; | |
1496 | ||
1497 | if (get_user(in, (__uint32_t __user *)arg)) | |
1498 | return -XFS_ERROR(EFAULT); | |
1499 | ||
1500 | error = xfs_fs_goingdown(mp, in); | |
1501 | return -error; | |
1502 | } | |
1503 | ||
1504 | case XFS_IOC_ERROR_INJECTION: { | |
1505 | xfs_error_injection_t in; | |
1506 | ||
1507 | if (!capable(CAP_SYS_ADMIN)) | |
1508 | return -EPERM; | |
1509 | ||
1510 | if (copy_from_user(&in, arg, sizeof(in))) | |
1511 | return -XFS_ERROR(EFAULT); | |
1512 | ||
1513 | error = xfs_errortag_add(in.errtag, mp); | |
1514 | return -error; | |
1515 | } | |
1516 | ||
1517 | case XFS_IOC_ERROR_CLEARALL: | |
1518 | if (!capable(CAP_SYS_ADMIN)) | |
1519 | return -EPERM; | |
1520 | ||
1521 | error = xfs_errortag_clearall(mp, 1); | |
1522 | return -error; | |
1523 | ||
1524 | default: | |
1525 | return -ENOTTY; | |
1526 | } | |
1527 | } |