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" |
1da177e4 LT |
20 | #include "xfs_log.h" |
21 | #include "xfs_trans.h" | |
22 | #include "xfs_sb.h" | |
a844f451 | 23 | #include "xfs_ag.h" |
1da177e4 | 24 | #include "xfs_alloc.h" |
1da177e4 | 25 | #include "xfs_mount.h" |
1da177e4 | 26 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
27 | #include "xfs_dinode.h" |
28 | #include "xfs_inode.h" | |
7bf446f8 | 29 | #include "xfs_ioctl.h" |
1da177e4 | 30 | #include "xfs_rtalloc.h" |
1da177e4 | 31 | #include "xfs_itable.h" |
a844f451 | 32 | #include "xfs_error.h" |
1da177e4 | 33 | #include "xfs_attr.h" |
a844f451 | 34 | #include "xfs_bmap.h" |
1da177e4 LT |
35 | #include "xfs_buf_item.h" |
36 | #include "xfs_utils.h" | |
37 | #include "xfs_dfrag.h" | |
38 | #include "xfs_fsops.h" | |
993386c1 | 39 | #include "xfs_vnodeops.h" |
a46db608 | 40 | #include "xfs_discard.h" |
25fe55e8 CH |
41 | #include "xfs_quota.h" |
42 | #include "xfs_inode_item.h" | |
d296d30a | 43 | #include "xfs_export.h" |
0b1b213f | 44 | #include "xfs_trace.h" |
1da177e4 | 45 | |
16f7e0fe | 46 | #include <linux/capability.h> |
1da177e4 LT |
47 | #include <linux/dcache.h> |
48 | #include <linux/mount.h> | |
49 | #include <linux/namei.h> | |
50 | #include <linux/pagemap.h> | |
5a0e3ad6 | 51 | #include <linux/slab.h> |
d296d30a | 52 | #include <linux/exportfs.h> |
1da177e4 LT |
53 | |
54 | /* | |
55 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
56 | * a file or fs handle. | |
57 | * | |
58 | * XFS_IOC_PATH_TO_FSHANDLE | |
59 | * returns fs handle for a mount point or path within that mount point | |
60 | * XFS_IOC_FD_TO_HANDLE | |
61 | * returns full handle for a FD opened in user space | |
62 | * XFS_IOC_PATH_TO_HANDLE | |
63 | * returns full handle for a path | |
64 | */ | |
d5547f9f | 65 | int |
1da177e4 LT |
66 | xfs_find_handle( |
67 | unsigned int cmd, | |
743bb465 | 68 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
69 | { |
70 | int hsize; | |
71 | xfs_handle_t handle; | |
1da177e4 | 72 | struct inode *inode; |
4346cdd4 CH |
73 | struct file *file = NULL; |
74 | struct path path; | |
75 | int error; | |
76 | struct xfs_inode *ip; | |
1da177e4 | 77 | |
4346cdd4 | 78 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
743bb465 | 79 | file = fget(hreq->fd); |
1da177e4 | 80 | if (!file) |
4346cdd4 CH |
81 | return -EBADF; |
82 | inode = file->f_path.dentry->d_inode; | |
83 | } else { | |
84 | error = user_lpath((const char __user *)hreq->path, &path); | |
85 | if (error) | |
86 | return error; | |
87 | inode = path.dentry->d_inode; | |
1da177e4 | 88 | } |
4346cdd4 CH |
89 | ip = XFS_I(inode); |
90 | ||
91 | /* | |
92 | * We can only generate handles for inodes residing on a XFS filesystem, | |
93 | * and only for regular files, directories or symbolic links. | |
94 | */ | |
95 | error = -EINVAL; | |
96 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
97 | goto out_put; | |
98 | ||
99 | error = -EBADF; | |
100 | if (!S_ISREG(inode->i_mode) && | |
101 | !S_ISDIR(inode->i_mode) && | |
102 | !S_ISLNK(inode->i_mode)) | |
103 | goto out_put; | |
104 | ||
105 | ||
106 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
107 | ||
108 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
109 | /* | |
110 | * This handle only contains an fsid, zero the rest. | |
111 | */ | |
112 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
113 | hsize = sizeof(xfs_fsid_t); | |
114 | } else { | |
1da177e4 LT |
115 | int lock_mode; |
116 | ||
1da177e4 | 117 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
118 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
119 | sizeof(handle.ha_fid.fid_len); | |
120 | handle.ha_fid.fid_pad = 0; | |
121 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
122 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
123 | xfs_iunlock_map_shared(ip, lock_mode); |
124 | ||
125 | hsize = XFS_HSIZE(handle); | |
126 | } | |
127 | ||
4346cdd4 | 128 | error = -EFAULT; |
743bb465 | 129 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
130 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
131 | goto out_put; | |
1da177e4 | 132 | |
4346cdd4 CH |
133 | error = 0; |
134 | ||
135 | out_put: | |
136 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
137 | fput(file); | |
138 | else | |
139 | path_put(&path); | |
140 | return error; | |
1da177e4 LT |
141 | } |
142 | ||
1da177e4 | 143 | /* |
d296d30a CH |
144 | * No need to do permission checks on the various pathname components |
145 | * as the handle operations are privileged. | |
1da177e4 LT |
146 | */ |
147 | STATIC int | |
d296d30a CH |
148 | xfs_handle_acceptable( |
149 | void *context, | |
150 | struct dentry *dentry) | |
151 | { | |
152 | return 1; | |
153 | } | |
154 | ||
155 | /* | |
156 | * Convert userspace handle data into a dentry. | |
157 | */ | |
158 | struct dentry * | |
159 | xfs_handle_to_dentry( | |
160 | struct file *parfilp, | |
161 | void __user *uhandle, | |
162 | u32 hlen) | |
1da177e4 | 163 | { |
1da177e4 | 164 | xfs_handle_t handle; |
d296d30a | 165 | struct xfs_fid64 fid; |
1da177e4 LT |
166 | |
167 | /* | |
168 | * Only allow handle opens under a directory. | |
169 | */ | |
d296d30a CH |
170 | if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) |
171 | return ERR_PTR(-ENOTDIR); | |
172 | ||
173 | if (hlen != sizeof(xfs_handle_t)) | |
174 | return ERR_PTR(-EINVAL); | |
175 | if (copy_from_user(&handle, uhandle, hlen)) | |
176 | return ERR_PTR(-EFAULT); | |
177 | if (handle.ha_fid.fid_len != | |
178 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
179 | return ERR_PTR(-EINVAL); | |
180 | ||
181 | memset(&fid, 0, sizeof(struct fid)); | |
182 | fid.ino = handle.ha_fid.fid_ino; | |
183 | fid.gen = handle.ha_fid.fid_gen; | |
184 | ||
185 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
186 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
187 | xfs_handle_acceptable, NULL); | |
188 | } | |
1da177e4 | 189 | |
d296d30a CH |
190 | STATIC struct dentry * |
191 | xfs_handlereq_to_dentry( | |
192 | struct file *parfilp, | |
193 | xfs_fsop_handlereq_t *hreq) | |
194 | { | |
195 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
196 | } |
197 | ||
d5547f9f | 198 | int |
1da177e4 | 199 | xfs_open_by_handle( |
1da177e4 | 200 | struct file *parfilp, |
d296d30a | 201 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 202 | { |
745ca247 | 203 | const struct cred *cred = current_cred(); |
1da177e4 | 204 | int error; |
d296d30a | 205 | int fd; |
1da177e4 LT |
206 | int permflag; |
207 | struct file *filp; | |
208 | struct inode *inode; | |
209 | struct dentry *dentry; | |
1a1d7724 | 210 | fmode_t fmode; |
765927b2 | 211 | struct path path; |
1da177e4 LT |
212 | |
213 | if (!capable(CAP_SYS_ADMIN)) | |
214 | return -XFS_ERROR(EPERM); | |
1da177e4 | 215 | |
d296d30a CH |
216 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
217 | if (IS_ERR(dentry)) | |
218 | return PTR_ERR(dentry); | |
219 | inode = dentry->d_inode; | |
1da177e4 LT |
220 | |
221 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
222 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
223 | error = -XFS_ERROR(EPERM); |
224 | goto out_dput; | |
1da177e4 LT |
225 | } |
226 | ||
227 | #if BITS_PER_LONG != 32 | |
743bb465 | 228 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 229 | #endif |
d296d30a | 230 | |
743bb465 | 231 | permflag = hreq->oflags; |
1a1d7724 | 232 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 233 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 234 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
d296d30a CH |
235 | error = -XFS_ERROR(EPERM); |
236 | goto out_dput; | |
1da177e4 LT |
237 | } |
238 | ||
1a1d7724 | 239 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
d296d30a CH |
240 | error = -XFS_ERROR(EACCES); |
241 | goto out_dput; | |
1da177e4 LT |
242 | } |
243 | ||
244 | /* Can't write directories. */ | |
1a1d7724 | 245 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
d296d30a CH |
246 | error = -XFS_ERROR(EISDIR); |
247 | goto out_dput; | |
1da177e4 LT |
248 | } |
249 | ||
d296d30a CH |
250 | fd = get_unused_fd(); |
251 | if (fd < 0) { | |
252 | error = fd; | |
253 | goto out_dput; | |
1da177e4 LT |
254 | } |
255 | ||
765927b2 AV |
256 | path.mnt = parfilp->f_path.mnt; |
257 | path.dentry = dentry; | |
258 | filp = dentry_open(&path, hreq->oflags, cred); | |
259 | dput(dentry); | |
1da177e4 | 260 | if (IS_ERR(filp)) { |
d296d30a CH |
261 | put_unused_fd(fd); |
262 | return PTR_ERR(filp); | |
1da177e4 | 263 | } |
4d4be482 | 264 | |
03209378 | 265 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 266 | filp->f_flags |= O_NOATIME; |
4d4be482 | 267 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 268 | } |
1da177e4 | 269 | |
d296d30a CH |
270 | fd_install(fd, filp); |
271 | return fd; | |
272 | ||
273 | out_dput: | |
274 | dput(dentry); | |
275 | return error; | |
1da177e4 LT |
276 | } |
277 | ||
804c83c3 CH |
278 | /* |
279 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
280 | * unused first argument. | |
281 | */ | |
282 | STATIC int | |
283 | do_readlink( | |
284 | char __user *buffer, | |
285 | int buflen, | |
286 | const char *link) | |
287 | { | |
288 | int len; | |
289 | ||
290 | len = PTR_ERR(link); | |
291 | if (IS_ERR(link)) | |
292 | goto out; | |
293 | ||
294 | len = strlen(link); | |
295 | if (len > (unsigned) buflen) | |
296 | len = buflen; | |
297 | if (copy_to_user(buffer, link, len)) | |
298 | len = -EFAULT; | |
299 | out: | |
300 | return len; | |
301 | } | |
302 | ||
303 | ||
d5547f9f | 304 | int |
1da177e4 | 305 | xfs_readlink_by_handle( |
d296d30a CH |
306 | struct file *parfilp, |
307 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 308 | { |
d296d30a | 309 | struct dentry *dentry; |
1da177e4 | 310 | __u32 olen; |
804c83c3 CH |
311 | void *link; |
312 | int error; | |
1da177e4 LT |
313 | |
314 | if (!capable(CAP_SYS_ADMIN)) | |
315 | return -XFS_ERROR(EPERM); | |
1da177e4 | 316 | |
d296d30a CH |
317 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
318 | if (IS_ERR(dentry)) | |
319 | return PTR_ERR(dentry); | |
1da177e4 LT |
320 | |
321 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 322 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 323 | error = -XFS_ERROR(EINVAL); |
d296d30a | 324 | goto out_dput; |
1da177e4 LT |
325 | } |
326 | ||
743bb465 | 327 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 328 | error = -XFS_ERROR(EFAULT); |
d296d30a | 329 | goto out_dput; |
1da177e4 | 330 | } |
1da177e4 | 331 | |
804c83c3 | 332 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
333 | if (!link) { |
334 | error = -XFS_ERROR(ENOMEM); | |
335 | goto out_dput; | |
336 | } | |
1da177e4 | 337 | |
d296d30a | 338 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 339 | if (error) |
804c83c3 | 340 | goto out_kfree; |
743bb465 | 341 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
342 | if (error) |
343 | goto out_kfree; | |
67fcaa73 | 344 | |
804c83c3 CH |
345 | out_kfree: |
346 | kfree(link); | |
d296d30a CH |
347 | out_dput: |
348 | dput(dentry); | |
804c83c3 | 349 | return error; |
1da177e4 LT |
350 | } |
351 | ||
352 | STATIC int | |
353 | xfs_fssetdm_by_handle( | |
d296d30a CH |
354 | struct file *parfilp, |
355 | void __user *arg) | |
1da177e4 LT |
356 | { |
357 | int error; | |
358 | struct fsdmidata fsd; | |
359 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 360 | struct dentry *dentry; |
1da177e4 LT |
361 | |
362 | if (!capable(CAP_MKNOD)) | |
363 | return -XFS_ERROR(EPERM); | |
364 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
365 | return -XFS_ERROR(EFAULT); | |
366 | ||
d296d30a CH |
367 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
368 | if (IS_ERR(dentry)) | |
369 | return PTR_ERR(dentry); | |
1da177e4 | 370 | |
d296d30a | 371 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
372 | error = -XFS_ERROR(EPERM); |
373 | goto out; | |
1da177e4 LT |
374 | } |
375 | ||
376 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
377 | error = -XFS_ERROR(EFAULT); |
378 | goto out; | |
1da177e4 LT |
379 | } |
380 | ||
d296d30a | 381 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 382 | fsd.fsd_dmstate); |
1da177e4 | 383 | |
6e7f75ea | 384 | out: |
d296d30a | 385 | dput(dentry); |
6e7f75ea | 386 | return error; |
1da177e4 LT |
387 | } |
388 | ||
389 | STATIC int | |
390 | xfs_attrlist_by_handle( | |
d296d30a CH |
391 | struct file *parfilp, |
392 | void __user *arg) | |
1da177e4 | 393 | { |
d296d30a | 394 | int error = -ENOMEM; |
1da177e4 LT |
395 | attrlist_cursor_kern_t *cursor; |
396 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 397 | struct dentry *dentry; |
1da177e4 LT |
398 | char *kbuf; |
399 | ||
400 | if (!capable(CAP_SYS_ADMIN)) | |
401 | return -XFS_ERROR(EPERM); | |
402 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
403 | return -XFS_ERROR(EFAULT); | |
404 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
405 | return -XFS_ERROR(EINVAL); | |
406 | ||
90ad58a8 CH |
407 | /* |
408 | * Reject flags, only allow namespaces. | |
409 | */ | |
410 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
411 | return -XFS_ERROR(EINVAL); | |
412 | ||
d296d30a CH |
413 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
414 | if (IS_ERR(dentry)) | |
415 | return PTR_ERR(dentry); | |
1da177e4 | 416 | |
6762b938 | 417 | kbuf = kzalloc(al_hreq.buflen, GFP_KERNEL); |
1da177e4 | 418 | if (!kbuf) |
d296d30a | 419 | goto out_dput; |
1da177e4 LT |
420 | |
421 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 422 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 423 | al_hreq.flags, cursor); |
1da177e4 LT |
424 | if (error) |
425 | goto out_kfree; | |
426 | ||
427 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
428 | error = -EFAULT; | |
429 | ||
430 | out_kfree: | |
431 | kfree(kbuf); | |
d296d30a CH |
432 | out_dput: |
433 | dput(dentry); | |
434 | return error; | |
1da177e4 LT |
435 | } |
436 | ||
28750975 | 437 | int |
1da177e4 | 438 | xfs_attrmulti_attr_get( |
739bfb2a | 439 | struct inode *inode, |
a9273ca5 DC |
440 | unsigned char *name, |
441 | unsigned char __user *ubuf, | |
1da177e4 LT |
442 | __uint32_t *len, |
443 | __uint32_t flags) | |
444 | { | |
a9273ca5 | 445 | unsigned char *kbuf; |
1da177e4 | 446 | int error = EFAULT; |
e8b0ebaa | 447 | |
1da177e4 LT |
448 | if (*len > XATTR_SIZE_MAX) |
449 | return EINVAL; | |
ad650f5b DC |
450 | kbuf = kmem_zalloc(*len, KM_SLEEP | KM_MAYFAIL); |
451 | if (!kbuf) { | |
452 | kbuf = kmem_zalloc_large(*len); | |
453 | if (!kbuf) | |
454 | return ENOMEM; | |
455 | } | |
1da177e4 | 456 | |
e8b0ebaa | 457 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
458 | if (error) |
459 | goto out_kfree; | |
460 | ||
461 | if (copy_to_user(ubuf, kbuf, *len)) | |
462 | error = EFAULT; | |
463 | ||
464 | out_kfree: | |
ad650f5b DC |
465 | if (is_vmalloc_addr(kbuf)) |
466 | kmem_free_large(kbuf); | |
467 | else | |
468 | kmem_free(kbuf); | |
1da177e4 LT |
469 | return error; |
470 | } | |
471 | ||
28750975 | 472 | int |
1da177e4 | 473 | xfs_attrmulti_attr_set( |
739bfb2a | 474 | struct inode *inode, |
a9273ca5 DC |
475 | unsigned char *name, |
476 | const unsigned char __user *ubuf, | |
1da177e4 LT |
477 | __uint32_t len, |
478 | __uint32_t flags) | |
479 | { | |
a9273ca5 | 480 | unsigned char *kbuf; |
1da177e4 LT |
481 | int error = EFAULT; |
482 | ||
739bfb2a | 483 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
484 | return EPERM; |
485 | if (len > XATTR_SIZE_MAX) | |
486 | return EINVAL; | |
487 | ||
0e639bde LZ |
488 | kbuf = memdup_user(ubuf, len); |
489 | if (IS_ERR(kbuf)) | |
490 | return PTR_ERR(kbuf); | |
e8b0ebaa | 491 | |
739bfb2a | 492 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 | 493 | |
1da177e4 LT |
494 | return error; |
495 | } | |
496 | ||
28750975 | 497 | int |
1da177e4 | 498 | xfs_attrmulti_attr_remove( |
739bfb2a | 499 | struct inode *inode, |
a9273ca5 | 500 | unsigned char *name, |
1da177e4 LT |
501 | __uint32_t flags) |
502 | { | |
739bfb2a | 503 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 504 | return EPERM; |
739bfb2a | 505 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
506 | } |
507 | ||
508 | STATIC int | |
509 | xfs_attrmulti_by_handle( | |
42a74f20 | 510 | struct file *parfilp, |
d296d30a | 511 | void __user *arg) |
1da177e4 LT |
512 | { |
513 | int error; | |
514 | xfs_attr_multiop_t *ops; | |
515 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 516 | struct dentry *dentry; |
1da177e4 | 517 | unsigned int i, size; |
a9273ca5 | 518 | unsigned char *attr_name; |
1da177e4 LT |
519 | |
520 | if (!capable(CAP_SYS_ADMIN)) | |
521 | return -XFS_ERROR(EPERM); | |
522 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
523 | return -XFS_ERROR(EFAULT); | |
524 | ||
fda168c2 ZW |
525 | /* overflow check */ |
526 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
527 | return -E2BIG; | |
528 | ||
d296d30a CH |
529 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
530 | if (IS_ERR(dentry)) | |
531 | return PTR_ERR(dentry); | |
1da177e4 LT |
532 | |
533 | error = E2BIG; | |
e182f57a | 534 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 535 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 536 | goto out_dput; |
1da177e4 | 537 | |
0e639bde LZ |
538 | ops = memdup_user(am_hreq.ops, size); |
539 | if (IS_ERR(ops)) { | |
540 | error = PTR_ERR(ops); | |
d296d30a | 541 | goto out_dput; |
0e639bde | 542 | } |
1da177e4 LT |
543 | |
544 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
545 | if (!attr_name) | |
546 | goto out_kfree_ops; | |
547 | ||
1da177e4 LT |
548 | error = 0; |
549 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 550 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
551 | ops[i].am_attrname, MAXNAMELEN); |
552 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
553 | error = -ERANGE; | |
554 | if (ops[i].am_error < 0) | |
555 | break; | |
556 | ||
557 | switch (ops[i].am_opcode) { | |
558 | case ATTR_OP_GET: | |
d296d30a CH |
559 | ops[i].am_error = xfs_attrmulti_attr_get( |
560 | dentry->d_inode, attr_name, | |
561 | ops[i].am_attrvalue, &ops[i].am_length, | |
562 | ops[i].am_flags); | |
1da177e4 LT |
563 | break; |
564 | case ATTR_OP_SET: | |
a561be71 | 565 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
566 | if (ops[i].am_error) |
567 | break; | |
d296d30a CH |
568 | ops[i].am_error = xfs_attrmulti_attr_set( |
569 | dentry->d_inode, attr_name, | |
570 | ops[i].am_attrvalue, ops[i].am_length, | |
571 | ops[i].am_flags); | |
2a79f17e | 572 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
573 | break; |
574 | case ATTR_OP_REMOVE: | |
a561be71 | 575 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
576 | if (ops[i].am_error) |
577 | break; | |
d296d30a CH |
578 | ops[i].am_error = xfs_attrmulti_attr_remove( |
579 | dentry->d_inode, attr_name, | |
580 | ops[i].am_flags); | |
2a79f17e | 581 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
582 | break; |
583 | default: | |
584 | ops[i].am_error = EINVAL; | |
585 | } | |
586 | } | |
587 | ||
588 | if (copy_to_user(am_hreq.ops, ops, size)) | |
589 | error = XFS_ERROR(EFAULT); | |
590 | ||
591 | kfree(attr_name); | |
592 | out_kfree_ops: | |
593 | kfree(ops); | |
d296d30a CH |
594 | out_dput: |
595 | dput(dentry); | |
1da177e4 LT |
596 | return -error; |
597 | } | |
598 | ||
d5547f9f | 599 | int |
1da177e4 | 600 | xfs_ioc_space( |
993386c1 | 601 | struct xfs_inode *ip, |
f37ea149 | 602 | struct inode *inode, |
1da177e4 LT |
603 | struct file *filp, |
604 | int ioflags, | |
605 | unsigned int cmd, | |
743bb465 | 606 | xfs_flock64_t *bf) |
1da177e4 | 607 | { |
1da177e4 LT |
608 | int attr_flags = 0; |
609 | int error; | |
610 | ||
743bb465 | 611 | /* |
612 | * Only allow the sys admin to reserve space unless | |
613 | * unwritten extents are enabled. | |
614 | */ | |
615 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
616 | !capable(CAP_SYS_ADMIN)) | |
617 | return -XFS_ERROR(EPERM); | |
618 | ||
f37ea149 | 619 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
620 | return -XFS_ERROR(EPERM); |
621 | ||
ad4a8ac4 | 622 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
623 | return -XFS_ERROR(EBADF); |
624 | ||
f37ea149 | 625 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
626 | return -XFS_ERROR(EINVAL); |
627 | ||
1da177e4 | 628 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 629 | attr_flags |= XFS_ATTR_NONBLOCK; |
82878897 DC |
630 | |
631 | if (filp->f_flags & O_DSYNC) | |
632 | attr_flags |= XFS_ATTR_SYNC; | |
633 | ||
1da177e4 | 634 | if (ioflags & IO_INVIS) |
0f285c8a | 635 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 636 | |
743bb465 | 637 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
1da177e4 LT |
638 | return -error; |
639 | } | |
640 | ||
641 | STATIC int | |
642 | xfs_ioc_bulkstat( | |
643 | xfs_mount_t *mp, | |
644 | unsigned int cmd, | |
645 | void __user *arg) | |
646 | { | |
647 | xfs_fsop_bulkreq_t bulkreq; | |
648 | int count; /* # of records returned */ | |
649 | xfs_ino_t inlast; /* last inode number */ | |
650 | int done; | |
651 | int error; | |
652 | ||
653 | /* done = 1 if there are more stats to get and if bulkstat */ | |
654 | /* should be called again (unused here, but used in dmapi) */ | |
655 | ||
656 | if (!capable(CAP_SYS_ADMIN)) | |
657 | return -EPERM; | |
658 | ||
659 | if (XFS_FORCED_SHUTDOWN(mp)) | |
660 | return -XFS_ERROR(EIO); | |
661 | ||
662 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
663 | return -XFS_ERROR(EFAULT); | |
664 | ||
665 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
666 | return -XFS_ERROR(EFAULT); | |
667 | ||
668 | if ((count = bulkreq.icount) <= 0) | |
669 | return -XFS_ERROR(EINVAL); | |
670 | ||
cd57e594 LM |
671 | if (bulkreq.ubuffer == NULL) |
672 | return -XFS_ERROR(EINVAL); | |
673 | ||
1da177e4 LT |
674 | if (cmd == XFS_IOC_FSINUMBERS) |
675 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 676 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
677 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
678 | error = xfs_bulkstat_single(mp, &inlast, | |
679 | bulkreq.ubuffer, &done); | |
cd57e594 | 680 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
681 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
682 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
683 | &done); | |
1da177e4 LT |
684 | |
685 | if (error) | |
686 | return -error; | |
687 | ||
688 | if (bulkreq.ocount != NULL) { | |
689 | if (copy_to_user(bulkreq.lastip, &inlast, | |
690 | sizeof(xfs_ino_t))) | |
691 | return -XFS_ERROR(EFAULT); | |
692 | ||
693 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
694 | return -XFS_ERROR(EFAULT); | |
695 | } | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
700 | STATIC int | |
701 | xfs_ioc_fsgeometry_v1( | |
702 | xfs_mount_t *mp, | |
703 | void __user *arg) | |
704 | { | |
eeb2036b | 705 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
706 | int error; |
707 | ||
eeb2036b | 708 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 LT |
709 | if (error) |
710 | return -error; | |
711 | ||
eeb2036b AE |
712 | /* |
713 | * Caller should have passed an argument of type | |
714 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
715 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
716 | */ | |
717 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
1da177e4 LT |
718 | return -XFS_ERROR(EFAULT); |
719 | return 0; | |
720 | } | |
721 | ||
722 | STATIC int | |
723 | xfs_ioc_fsgeometry( | |
724 | xfs_mount_t *mp, | |
725 | void __user *arg) | |
726 | { | |
727 | xfs_fsop_geom_t fsgeo; | |
728 | int error; | |
729 | ||
730 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
731 | if (error) | |
732 | return -error; | |
733 | ||
734 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
735 | return -XFS_ERROR(EFAULT); | |
736 | return 0; | |
737 | } | |
738 | ||
739 | /* | |
740 | * Linux extended inode flags interface. | |
741 | */ | |
1da177e4 LT |
742 | |
743 | STATIC unsigned int | |
744 | xfs_merge_ioc_xflags( | |
745 | unsigned int flags, | |
746 | unsigned int start) | |
747 | { | |
748 | unsigned int xflags = start; | |
749 | ||
39058a0e | 750 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
751 | xflags |= XFS_XFLAG_IMMUTABLE; |
752 | else | |
753 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 754 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
755 | xflags |= XFS_XFLAG_APPEND; |
756 | else | |
757 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 758 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
759 | xflags |= XFS_XFLAG_SYNC; |
760 | else | |
761 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 762 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
763 | xflags |= XFS_XFLAG_NOATIME; |
764 | else | |
765 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 766 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
767 | xflags |= XFS_XFLAG_NODUMP; |
768 | else | |
769 | xflags &= ~XFS_XFLAG_NODUMP; | |
770 | ||
771 | return xflags; | |
772 | } | |
773 | ||
774 | STATIC unsigned int | |
775 | xfs_di2lxflags( | |
776 | __uint16_t di_flags) | |
777 | { | |
778 | unsigned int flags = 0; | |
779 | ||
780 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 781 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 782 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 783 | flags |= FS_APPEND_FL; |
1da177e4 | 784 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 785 | flags |= FS_SYNC_FL; |
1da177e4 | 786 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 787 | flags |= FS_NOATIME_FL; |
1da177e4 | 788 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 789 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
790 | return flags; |
791 | } | |
792 | ||
c83bfab1 CH |
793 | STATIC int |
794 | xfs_ioc_fsgetxattr( | |
795 | xfs_inode_t *ip, | |
796 | int attr, | |
797 | void __user *arg) | |
798 | { | |
799 | struct fsxattr fa; | |
800 | ||
a122eb2f DR |
801 | memset(&fa, 0, sizeof(struct fsxattr)); |
802 | ||
c83bfab1 CH |
803 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
804 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
805 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 806 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
807 | |
808 | if (attr) { | |
809 | if (ip->i_afp) { | |
810 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
811 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
812 | sizeof(xfs_bmbt_rec_t); | |
813 | else | |
814 | fa.fsx_nextents = ip->i_d.di_anextents; | |
815 | } else | |
816 | fa.fsx_nextents = 0; | |
817 | } else { | |
818 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
819 | fa.fsx_nextents = ip->i_df.if_bytes / | |
820 | sizeof(xfs_bmbt_rec_t); | |
821 | else | |
822 | fa.fsx_nextents = ip->i_d.di_nextents; | |
823 | } | |
824 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
825 | ||
826 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
827 | return -EFAULT; | |
828 | return 0; | |
829 | } | |
830 | ||
25fe55e8 CH |
831 | STATIC void |
832 | xfs_set_diflags( | |
833 | struct xfs_inode *ip, | |
834 | unsigned int xflags) | |
835 | { | |
836 | unsigned int di_flags; | |
837 | ||
838 | /* can't set PREALLOC this way, just preserve it */ | |
839 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
840 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
841 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
842 | if (xflags & XFS_XFLAG_APPEND) | |
843 | di_flags |= XFS_DIFLAG_APPEND; | |
844 | if (xflags & XFS_XFLAG_SYNC) | |
845 | di_flags |= XFS_DIFLAG_SYNC; | |
846 | if (xflags & XFS_XFLAG_NOATIME) | |
847 | di_flags |= XFS_DIFLAG_NOATIME; | |
848 | if (xflags & XFS_XFLAG_NODUMP) | |
849 | di_flags |= XFS_DIFLAG_NODUMP; | |
850 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
851 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
852 | if (xflags & XFS_XFLAG_NODEFRAG) | |
853 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
854 | if (xflags & XFS_XFLAG_FILESTREAM) | |
855 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
abbede1b | 856 | if (S_ISDIR(ip->i_d.di_mode)) { |
25fe55e8 CH |
857 | if (xflags & XFS_XFLAG_RTINHERIT) |
858 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
859 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
860 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
861 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
862 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
abbede1b | 863 | } else if (S_ISREG(ip->i_d.di_mode)) { |
25fe55e8 CH |
864 | if (xflags & XFS_XFLAG_REALTIME) |
865 | di_flags |= XFS_DIFLAG_REALTIME; | |
866 | if (xflags & XFS_XFLAG_EXTSIZE) | |
867 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
868 | } | |
869 | ||
870 | ip->i_d.di_flags = di_flags; | |
871 | } | |
872 | ||
f13fae2d CH |
873 | STATIC void |
874 | xfs_diflags_to_linux( | |
875 | struct xfs_inode *ip) | |
876 | { | |
e4f75291 | 877 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
878 | unsigned int xflags = xfs_ip2xflags(ip); |
879 | ||
880 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
881 | inode->i_flags |= S_IMMUTABLE; | |
882 | else | |
883 | inode->i_flags &= ~S_IMMUTABLE; | |
884 | if (xflags & XFS_XFLAG_APPEND) | |
885 | inode->i_flags |= S_APPEND; | |
886 | else | |
887 | inode->i_flags &= ~S_APPEND; | |
888 | if (xflags & XFS_XFLAG_SYNC) | |
889 | inode->i_flags |= S_SYNC; | |
890 | else | |
891 | inode->i_flags &= ~S_SYNC; | |
892 | if (xflags & XFS_XFLAG_NOATIME) | |
893 | inode->i_flags |= S_NOATIME; | |
894 | else | |
895 | inode->i_flags &= ~S_NOATIME; | |
896 | } | |
25fe55e8 CH |
897 | |
898 | #define FSX_PROJID 1 | |
899 | #define FSX_EXTSIZE 2 | |
900 | #define FSX_XFLAGS 4 | |
901 | #define FSX_NONBLOCK 8 | |
902 | ||
903 | STATIC int | |
904 | xfs_ioctl_setattr( | |
905 | xfs_inode_t *ip, | |
906 | struct fsxattr *fa, | |
907 | int mask) | |
908 | { | |
909 | struct xfs_mount *mp = ip->i_mount; | |
910 | struct xfs_trans *tp; | |
911 | unsigned int lock_flags = 0; | |
7d095257 CH |
912 | struct xfs_dquot *udqp = NULL; |
913 | struct xfs_dquot *gdqp = NULL; | |
25fe55e8 CH |
914 | struct xfs_dquot *olddquot = NULL; |
915 | int code; | |
916 | ||
cca28fb8 | 917 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 CH |
918 | |
919 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
920 | return XFS_ERROR(EROFS); | |
921 | if (XFS_FORCED_SHUTDOWN(mp)) | |
922 | return XFS_ERROR(EIO); | |
923 | ||
23963e54 | 924 | /* |
6743099c | 925 | * Disallow 32bit project ids when projid32bit feature is not enabled. |
23963e54 | 926 | */ |
6743099c AM |
927 | if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && |
928 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
23963e54 AM |
929 | return XFS_ERROR(EINVAL); |
930 | ||
25fe55e8 CH |
931 | /* |
932 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
933 | * before we start any other transactions. Trying to do this later | |
934 | * is messy. We don't care to take a readlock to look at the ids | |
935 | * in inode here, because we can't hold it across the trans_reserve. | |
936 | * If the IDs do change before we take the ilock, we're covered | |
937 | * because the i_*dquot fields will get updated anyway. | |
938 | */ | |
939 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
7d095257 | 940 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 CH |
941 | ip->i_d.di_gid, fa->fsx_projid, |
942 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
943 | if (code) | |
944 | return code; | |
945 | } | |
946 | ||
947 | /* | |
948 | * For the other attributes, we acquire the inode lock and | |
949 | * first do an error checking pass. | |
950 | */ | |
951 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
952 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
953 | if (code) | |
954 | goto error_return; | |
955 | ||
956 | lock_flags = XFS_ILOCK_EXCL; | |
957 | xfs_ilock(ip, lock_flags); | |
958 | ||
959 | /* | |
960 | * CAP_FOWNER overrides the following restrictions: | |
961 | * | |
962 | * The user ID of the calling process must be equal | |
963 | * to the file owner ID, except in cases where the | |
964 | * CAP_FSETID capability is applicable. | |
965 | */ | |
91b77712 | 966 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
967 | code = XFS_ERROR(EPERM); |
968 | goto error_return; | |
969 | } | |
970 | ||
971 | /* | |
972 | * Do a quota reservation only if projid is actually going to change. | |
973 | */ | |
974 | if (mask & FSX_PROJID) { | |
7d095257 CH |
975 | if (XFS_IS_QUOTA_RUNNING(mp) && |
976 | XFS_IS_PQUOTA_ON(mp) && | |
6743099c | 977 | xfs_get_projid(ip) != fa->fsx_projid) { |
25fe55e8 | 978 | ASSERT(tp); |
7d095257 | 979 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, |
25fe55e8 CH |
980 | capable(CAP_FOWNER) ? |
981 | XFS_QMOPT_FORCE_RES : 0); | |
982 | if (code) /* out of quota */ | |
983 | goto error_return; | |
984 | } | |
985 | } | |
986 | ||
987 | if (mask & FSX_EXTSIZE) { | |
988 | /* | |
989 | * Can't change extent size if any extents are allocated. | |
990 | */ | |
991 | if (ip->i_d.di_nextents && | |
992 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
993 | fa->fsx_extsize)) { | |
994 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
995 | goto error_return; | |
996 | } | |
997 | ||
998 | /* | |
999 | * Extent size must be a multiple of the appropriate block | |
5315837d DC |
1000 | * size, if set at all. It must also be smaller than the |
1001 | * maximum extent size supported by the filesystem. | |
1002 | * | |
1003 | * Also, for non-realtime files, limit the extent size hint to | |
1004 | * half the size of the AGs in the filesystem so alignment | |
1005 | * doesn't result in extents larger than an AG. | |
25fe55e8 CH |
1006 | */ |
1007 | if (fa->fsx_extsize != 0) { | |
5315837d DC |
1008 | xfs_extlen_t size; |
1009 | xfs_fsblock_t extsize_fsb; | |
1010 | ||
1011 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1012 | if (extsize_fsb > MAXEXTLEN) { | |
1013 | code = XFS_ERROR(EINVAL); | |
1014 | goto error_return; | |
1015 | } | |
25fe55e8 CH |
1016 | |
1017 | if (XFS_IS_REALTIME_INODE(ip) || | |
1018 | ((mask & FSX_XFLAGS) && | |
1019 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
1020 | size = mp->m_sb.sb_rextsize << | |
1021 | mp->m_sb.sb_blocklog; | |
1022 | } else { | |
1023 | size = mp->m_sb.sb_blocksize; | |
5315837d DC |
1024 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { |
1025 | code = XFS_ERROR(EINVAL); | |
1026 | goto error_return; | |
1027 | } | |
25fe55e8 CH |
1028 | } |
1029 | ||
1030 | if (fa->fsx_extsize % size) { | |
1031 | code = XFS_ERROR(EINVAL); | |
1032 | goto error_return; | |
1033 | } | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | ||
1038 | if (mask & FSX_XFLAGS) { | |
1039 | /* | |
1040 | * Can't change realtime flag if any extents are allocated. | |
1041 | */ | |
1042 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1043 | (XFS_IS_REALTIME_INODE(ip)) != | |
1044 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1045 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1046 | goto error_return; | |
1047 | } | |
1048 | ||
1049 | /* | |
1050 | * If realtime flag is set then must have realtime data. | |
1051 | */ | |
1052 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1053 | if ((mp->m_sb.sb_rblocks == 0) || | |
1054 | (mp->m_sb.sb_rextsize == 0) || | |
1055 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1056 | code = XFS_ERROR(EINVAL); | |
1057 | goto error_return; | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | /* | |
1062 | * Can't modify an immutable/append-only file unless | |
1063 | * we have appropriate permission. | |
1064 | */ | |
1065 | if ((ip->i_d.di_flags & | |
1066 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1067 | (fa->fsx_xflags & | |
1068 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1069 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1070 | code = XFS_ERROR(EPERM); | |
1071 | goto error_return; | |
1072 | } | |
1073 | } | |
1074 | ||
ddc3415a | 1075 | xfs_trans_ijoin(tp, ip, 0); |
25fe55e8 CH |
1076 | |
1077 | /* | |
1078 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1079 | */ |
1080 | if (mask & FSX_PROJID) { | |
1081 | /* | |
1082 | * CAP_FSETID overrides the following restrictions: | |
1083 | * | |
1084 | * The set-user-ID and set-group-ID bits of a file will be | |
1085 | * cleared upon successful return from chown() | |
1086 | */ | |
1087 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1088 | !capable(CAP_FSETID)) | |
1089 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1090 | ||
1091 | /* | |
1092 | * Change the ownerships and register quota modifications | |
1093 | * in the transaction. | |
1094 | */ | |
6743099c | 1095 | if (xfs_get_projid(ip) != fa->fsx_projid) { |
7d095257 CH |
1096 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1097 | olddquot = xfs_qm_vop_chown(tp, ip, | |
25fe55e8 CH |
1098 | &ip->i_gdquot, gdqp); |
1099 | } | |
6743099c | 1100 | xfs_set_projid(ip, fa->fsx_projid); |
25fe55e8 CH |
1101 | |
1102 | /* | |
1103 | * We may have to rev the inode as well as | |
1104 | * the superblock version number since projids didn't | |
1105 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1106 | */ | |
51ce16d5 | 1107 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1108 | xfs_bump_ino_vers2(tp, ip); |
1109 | } | |
1110 | ||
1111 | } | |
1112 | ||
1113 | if (mask & FSX_EXTSIZE) | |
1114 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1115 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1116 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1117 | xfs_diflags_to_linux(ip); |
1118 | } | |
25fe55e8 | 1119 | |
dcd79a14 | 1120 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); |
25fe55e8 | 1121 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
25fe55e8 CH |
1122 | |
1123 | XFS_STATS_INC(xs_ig_attrchg); | |
1124 | ||
1125 | /* | |
1126 | * If this is a synchronous mount, make sure that the | |
1127 | * transaction goes to disk before returning to the user. | |
1128 | * This is slightly sub-optimal in that truncates require | |
1129 | * two sync transactions instead of one for wsync filesystems. | |
1130 | * One for the truncate and one for the timestamps since we | |
1131 | * don't want to change the timestamps unless we're sure the | |
1132 | * truncate worked. Truncates are less than 1% of the laddis | |
1133 | * mix so this probably isn't worth the trouble to optimize. | |
1134 | */ | |
1135 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1136 | xfs_trans_set_sync(tp); | |
1137 | code = xfs_trans_commit(tp, 0); | |
1138 | xfs_iunlock(ip, lock_flags); | |
1139 | ||
1140 | /* | |
1141 | * Release any dquot(s) the inode had kept before chown. | |
1142 | */ | |
7d095257 CH |
1143 | xfs_qm_dqrele(olddquot); |
1144 | xfs_qm_dqrele(udqp); | |
1145 | xfs_qm_dqrele(gdqp); | |
25fe55e8 | 1146 | |
288699fe | 1147 | return code; |
25fe55e8 CH |
1148 | |
1149 | error_return: | |
7d095257 CH |
1150 | xfs_qm_dqrele(udqp); |
1151 | xfs_qm_dqrele(gdqp); | |
25fe55e8 CH |
1152 | xfs_trans_cancel(tp, 0); |
1153 | if (lock_flags) | |
1154 | xfs_iunlock(ip, lock_flags); | |
1155 | return code; | |
1156 | } | |
1157 | ||
1da177e4 | 1158 | STATIC int |
df26cfe8 | 1159 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1160 | xfs_inode_t *ip, |
1161 | struct file *filp, | |
1da177e4 LT |
1162 | void __user *arg) |
1163 | { | |
1164 | struct fsxattr fa; | |
25fe55e8 | 1165 | unsigned int mask; |
df26cfe8 LM |
1166 | |
1167 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1168 | return -EFAULT; | |
1da177e4 | 1169 | |
25fe55e8 | 1170 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1171 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1172 | mask |= FSX_NONBLOCK; |
1da177e4 | 1173 | |
25fe55e8 | 1174 | return -xfs_ioctl_setattr(ip, &fa, mask); |
df26cfe8 | 1175 | } |
1da177e4 | 1176 | |
df26cfe8 LM |
1177 | STATIC int |
1178 | xfs_ioc_getxflags( | |
1179 | xfs_inode_t *ip, | |
1180 | void __user *arg) | |
1181 | { | |
1182 | unsigned int flags; | |
1da177e4 | 1183 | |
df26cfe8 LM |
1184 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1185 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1186 | return -EFAULT; | |
1187 | return 0; | |
1188 | } | |
1da177e4 | 1189 | |
df26cfe8 LM |
1190 | STATIC int |
1191 | xfs_ioc_setxflags( | |
1192 | xfs_inode_t *ip, | |
1193 | struct file *filp, | |
1194 | void __user *arg) | |
1195 | { | |
25fe55e8 | 1196 | struct fsxattr fa; |
df26cfe8 | 1197 | unsigned int flags; |
25fe55e8 | 1198 | unsigned int mask; |
1da177e4 | 1199 | |
df26cfe8 LM |
1200 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1201 | return -EFAULT; | |
1da177e4 | 1202 | |
df26cfe8 LM |
1203 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1204 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1205 | FS_SYNC_FL)) | |
1206 | return -EOPNOTSUPP; | |
1da177e4 | 1207 | |
25fe55e8 | 1208 | mask = FSX_XFLAGS; |
df26cfe8 | 1209 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1210 | mask |= FSX_NONBLOCK; |
1211 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1212 | |
25fe55e8 | 1213 | return -xfs_ioctl_setattr(ip, &fa, mask); |
1da177e4 LT |
1214 | } |
1215 | ||
8a7141a8 ES |
1216 | STATIC int |
1217 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1218 | { | |
1219 | struct getbmap __user *base = *ap; | |
1220 | ||
1221 | /* copy only getbmap portion (not getbmapx) */ | |
1222 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1223 | return XFS_ERROR(EFAULT); | |
1224 | ||
1225 | *ap += sizeof(struct getbmap); | |
1226 | return 0; | |
1227 | } | |
1228 | ||
1da177e4 LT |
1229 | STATIC int |
1230 | xfs_ioc_getbmap( | |
993386c1 | 1231 | struct xfs_inode *ip, |
1da177e4 LT |
1232 | int ioflags, |
1233 | unsigned int cmd, | |
1234 | void __user *arg) | |
1235 | { | |
8a7141a8 | 1236 | struct getbmapx bmx; |
1da177e4 LT |
1237 | int error; |
1238 | ||
8a7141a8 | 1239 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1240 | return -XFS_ERROR(EFAULT); |
1241 | ||
8a7141a8 | 1242 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1243 | return -XFS_ERROR(EINVAL); |
1244 | ||
8a7141a8 | 1245 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1246 | if (ioflags & IO_INVIS) |
8a7141a8 | 1247 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1248 | |
8a7141a8 ES |
1249 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1250 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1251 | if (error) |
1252 | return -error; | |
1253 | ||
8a7141a8 ES |
1254 | /* copy back header - only size of getbmap */ |
1255 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1256 | return -XFS_ERROR(EFAULT); |
1257 | return 0; | |
1258 | } | |
1259 | ||
8a7141a8 ES |
1260 | STATIC int |
1261 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1262 | { | |
1263 | struct getbmapx __user *base = *ap; | |
1264 | ||
1265 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1266 | return XFS_ERROR(EFAULT); | |
1267 | ||
1268 | *ap += sizeof(struct getbmapx); | |
1269 | return 0; | |
1270 | } | |
1271 | ||
1da177e4 LT |
1272 | STATIC int |
1273 | xfs_ioc_getbmapx( | |
993386c1 | 1274 | struct xfs_inode *ip, |
1da177e4 LT |
1275 | void __user *arg) |
1276 | { | |
1277 | struct getbmapx bmx; | |
1da177e4 LT |
1278 | int error; |
1279 | ||
1280 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1281 | return -XFS_ERROR(EFAULT); | |
1282 | ||
1283 | if (bmx.bmv_count < 2) | |
1284 | return -XFS_ERROR(EINVAL); | |
1285 | ||
8a7141a8 | 1286 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1287 | return -XFS_ERROR(EINVAL); |
1288 | ||
8a7141a8 ES |
1289 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1290 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1291 | if (error) |
1292 | return -error; | |
1293 | ||
8a7141a8 ES |
1294 | /* copy back header */ |
1295 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1296 | return -XFS_ERROR(EFAULT); |
1297 | ||
1298 | return 0; | |
1299 | } | |
df26cfe8 | 1300 | |
4d4be482 CH |
1301 | /* |
1302 | * Note: some of the ioctl's return positive numbers as a | |
1303 | * byte count indicating success, such as readlink_by_handle. | |
1304 | * So we don't "sign flip" like most other routines. This means | |
1305 | * true errors need to be returned as a negative value. | |
1306 | */ | |
1307 | long | |
1308 | xfs_file_ioctl( | |
df26cfe8 | 1309 | struct file *filp, |
df26cfe8 | 1310 | unsigned int cmd, |
4d4be482 | 1311 | unsigned long p) |
df26cfe8 LM |
1312 | { |
1313 | struct inode *inode = filp->f_path.dentry->d_inode; | |
4d4be482 CH |
1314 | struct xfs_inode *ip = XFS_I(inode); |
1315 | struct xfs_mount *mp = ip->i_mount; | |
1316 | void __user *arg = (void __user *)p; | |
1317 | int ioflags = 0; | |
df26cfe8 LM |
1318 | int error; |
1319 | ||
4d4be482 CH |
1320 | if (filp->f_mode & FMODE_NOCMTIME) |
1321 | ioflags |= IO_INVIS; | |
df26cfe8 | 1322 | |
cca28fb8 | 1323 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1324 | |
1325 | switch (cmd) { | |
a46db608 CH |
1326 | case FITRIM: |
1327 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1328 | case XFS_IOC_ALLOCSP: |
1329 | case XFS_IOC_FREESP: | |
1330 | case XFS_IOC_RESVSP: | |
1331 | case XFS_IOC_UNRESVSP: | |
1332 | case XFS_IOC_ALLOCSP64: | |
1333 | case XFS_IOC_FREESP64: | |
1334 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1335 | case XFS_IOC_UNRESVSP64: |
1336 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1337 | xfs_flock64_t bf; |
df26cfe8 | 1338 | |
743bb465 | 1339 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1340 | return -XFS_ERROR(EFAULT); | |
1341 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1342 | } | |
df26cfe8 LM |
1343 | case XFS_IOC_DIOINFO: { |
1344 | struct dioattr da; | |
1345 | xfs_buftarg_t *target = | |
1346 | XFS_IS_REALTIME_INODE(ip) ? | |
1347 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1348 | ||
1349 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1350 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1351 | ||
1352 | if (copy_to_user(arg, &da, sizeof(da))) | |
1353 | return -XFS_ERROR(EFAULT); | |
1354 | return 0; | |
1355 | } | |
1356 | ||
1357 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1358 | case XFS_IOC_FSBULKSTAT: | |
1359 | case XFS_IOC_FSINUMBERS: | |
1360 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1361 | ||
1362 | case XFS_IOC_FSGEOMETRY_V1: | |
1363 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1364 | ||
1365 | case XFS_IOC_FSGEOMETRY: | |
1366 | return xfs_ioc_fsgeometry(mp, arg); | |
1367 | ||
1368 | case XFS_IOC_GETVERSION: | |
1369 | return put_user(inode->i_generation, (int __user *)arg); | |
1370 | ||
1371 | case XFS_IOC_FSGETXATTR: | |
1372 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1373 | case XFS_IOC_FSGETXATTRA: | |
1374 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1375 | case XFS_IOC_FSSETXATTR: |
1376 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1377 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1378 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1379 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1380 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1381 | |
1382 | case XFS_IOC_FSSETDM: { | |
1383 | struct fsdmidata dmi; | |
1384 | ||
1385 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1386 | return -XFS_ERROR(EFAULT); | |
1387 | ||
1388 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1389 | dmi.fsd_dmstate); | |
1390 | return -error; | |
1391 | } | |
1392 | ||
1393 | case XFS_IOC_GETBMAP: | |
1394 | case XFS_IOC_GETBMAPA: | |
1395 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1396 | ||
1397 | case XFS_IOC_GETBMAPX: | |
1398 | return xfs_ioc_getbmapx(ip, arg); | |
1399 | ||
1400 | case XFS_IOC_FD_TO_HANDLE: | |
1401 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1402 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1403 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1404 | |
743bb465 | 1405 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1406 | return -XFS_ERROR(EFAULT); | |
1407 | return xfs_find_handle(cmd, &hreq); | |
1408 | } | |
1409 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1410 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1411 | |
743bb465 | 1412 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1413 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1414 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1415 | } |
df26cfe8 | 1416 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1417 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1418 | |
743bb465 | 1419 | case XFS_IOC_READLINK_BY_HANDLE: { |
1420 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1421 | |
743bb465 | 1422 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1423 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1424 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1425 | } |
df26cfe8 | 1426 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1427 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1428 | |
1429 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1430 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1431 | |
1432 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1433 | struct xfs_swapext sxp; |
1434 | ||
1435 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1436 | return -XFS_ERROR(EFAULT); | |
1437 | error = xfs_swapext(&sxp); | |
df26cfe8 LM |
1438 | return -error; |
1439 | } | |
1440 | ||
1441 | case XFS_IOC_FSCOUNTS: { | |
1442 | xfs_fsop_counts_t out; | |
1443 | ||
1444 | error = xfs_fs_counts(mp, &out); | |
1445 | if (error) | |
1446 | return -error; | |
1447 | ||
1448 | if (copy_to_user(arg, &out, sizeof(out))) | |
1449 | return -XFS_ERROR(EFAULT); | |
1450 | return 0; | |
1451 | } | |
1452 | ||
1453 | case XFS_IOC_SET_RESBLKS: { | |
1454 | xfs_fsop_resblks_t inout; | |
1455 | __uint64_t in; | |
1456 | ||
1457 | if (!capable(CAP_SYS_ADMIN)) | |
1458 | return -EPERM; | |
1459 | ||
d5db0f97 ES |
1460 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
1461 | return -XFS_ERROR(EROFS); | |
1462 | ||
df26cfe8 LM |
1463 | if (copy_from_user(&inout, arg, sizeof(inout))) |
1464 | return -XFS_ERROR(EFAULT); | |
1465 | ||
1466 | /* input parameter is passed in resblks field of structure */ | |
1467 | in = inout.resblks; | |
1468 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1469 | if (error) | |
1470 | return -error; | |
1471 | ||
1472 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1473 | return -XFS_ERROR(EFAULT); | |
1474 | return 0; | |
1475 | } | |
1476 | ||
1477 | case XFS_IOC_GET_RESBLKS: { | |
1478 | xfs_fsop_resblks_t out; | |
1479 | ||
1480 | if (!capable(CAP_SYS_ADMIN)) | |
1481 | return -EPERM; | |
1482 | ||
1483 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1484 | if (error) | |
1485 | return -error; | |
1486 | ||
1487 | if (copy_to_user(arg, &out, sizeof(out))) | |
1488 | return -XFS_ERROR(EFAULT); | |
1489 | ||
1490 | return 0; | |
1491 | } | |
1492 | ||
1493 | case XFS_IOC_FSGROWFSDATA: { | |
1494 | xfs_growfs_data_t in; | |
1495 | ||
df26cfe8 LM |
1496 | if (copy_from_user(&in, arg, sizeof(in))) |
1497 | return -XFS_ERROR(EFAULT); | |
1498 | ||
1499 | error = xfs_growfs_data(mp, &in); | |
1500 | return -error; | |
1501 | } | |
1502 | ||
1503 | case XFS_IOC_FSGROWFSLOG: { | |
1504 | xfs_growfs_log_t in; | |
1505 | ||
df26cfe8 LM |
1506 | if (copy_from_user(&in, arg, sizeof(in))) |
1507 | return -XFS_ERROR(EFAULT); | |
1508 | ||
1509 | error = xfs_growfs_log(mp, &in); | |
1510 | return -error; | |
1511 | } | |
1512 | ||
1513 | case XFS_IOC_FSGROWFSRT: { | |
1514 | xfs_growfs_rt_t in; | |
1515 | ||
df26cfe8 LM |
1516 | if (copy_from_user(&in, arg, sizeof(in))) |
1517 | return -XFS_ERROR(EFAULT); | |
1518 | ||
1519 | error = xfs_growfs_rt(mp, &in); | |
1520 | return -error; | |
1521 | } | |
1522 | ||
df26cfe8 LM |
1523 | case XFS_IOC_GOINGDOWN: { |
1524 | __uint32_t in; | |
1525 | ||
1526 | if (!capable(CAP_SYS_ADMIN)) | |
1527 | return -EPERM; | |
1528 | ||
1529 | if (get_user(in, (__uint32_t __user *)arg)) | |
1530 | return -XFS_ERROR(EFAULT); | |
1531 | ||
1532 | error = xfs_fs_goingdown(mp, in); | |
1533 | return -error; | |
1534 | } | |
1535 | ||
1536 | case XFS_IOC_ERROR_INJECTION: { | |
1537 | xfs_error_injection_t in; | |
1538 | ||
1539 | if (!capable(CAP_SYS_ADMIN)) | |
1540 | return -EPERM; | |
1541 | ||
1542 | if (copy_from_user(&in, arg, sizeof(in))) | |
1543 | return -XFS_ERROR(EFAULT); | |
1544 | ||
1545 | error = xfs_errortag_add(in.errtag, mp); | |
1546 | return -error; | |
1547 | } | |
1548 | ||
1549 | case XFS_IOC_ERROR_CLEARALL: | |
1550 | if (!capable(CAP_SYS_ADMIN)) | |
1551 | return -EPERM; | |
1552 | ||
1553 | error = xfs_errortag_clearall(mp, 1); | |
1554 | return -error; | |
1555 | ||
1556 | default: | |
1557 | return -ENOTTY; | |
1558 | } | |
1559 | } |