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