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" |
6ca1c906 | 20 | #include "xfs_format.h" |
1da177e4 LT |
21 | #include "xfs_log.h" |
22 | #include "xfs_trans.h" | |
23 | #include "xfs_sb.h" | |
a844f451 | 24 | #include "xfs_ag.h" |
1da177e4 | 25 | #include "xfs_alloc.h" |
1da177e4 | 26 | #include "xfs_mount.h" |
1da177e4 | 27 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
28 | #include "xfs_dinode.h" |
29 | #include "xfs_inode.h" | |
7bf446f8 | 30 | #include "xfs_ioctl.h" |
1da177e4 | 31 | #include "xfs_rtalloc.h" |
1da177e4 | 32 | #include "xfs_itable.h" |
a844f451 | 33 | #include "xfs_error.h" |
1da177e4 | 34 | #include "xfs_attr.h" |
a844f451 | 35 | #include "xfs_bmap.h" |
68988114 | 36 | #include "xfs_bmap_util.h" |
1da177e4 | 37 | #include "xfs_buf_item.h" |
1da177e4 | 38 | #include "xfs_fsops.h" |
a46db608 | 39 | #include "xfs_discard.h" |
25fe55e8 CH |
40 | #include "xfs_quota.h" |
41 | #include "xfs_inode_item.h" | |
d296d30a | 42 | #include "xfs_export.h" |
0b1b213f | 43 | #include "xfs_trace.h" |
8ca149de | 44 | #include "xfs_icache.h" |
c24b5dfa | 45 | #include "xfs_symlink.h" |
1da177e4 | 46 | |
16f7e0fe | 47 | #include <linux/capability.h> |
1da177e4 LT |
48 | #include <linux/dcache.h> |
49 | #include <linux/mount.h> | |
50 | #include <linux/namei.h> | |
51 | #include <linux/pagemap.h> | |
5a0e3ad6 | 52 | #include <linux/slab.h> |
d296d30a | 53 | #include <linux/exportfs.h> |
1da177e4 LT |
54 | |
55 | /* | |
56 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
57 | * a file or fs handle. | |
58 | * | |
59 | * XFS_IOC_PATH_TO_FSHANDLE | |
60 | * returns fs handle for a mount point or path within that mount point | |
61 | * XFS_IOC_FD_TO_HANDLE | |
62 | * returns full handle for a FD opened in user space | |
63 | * XFS_IOC_PATH_TO_HANDLE | |
64 | * returns full handle for a path | |
65 | */ | |
d5547f9f | 66 | int |
1da177e4 LT |
67 | xfs_find_handle( |
68 | unsigned int cmd, | |
743bb465 | 69 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
70 | { |
71 | int hsize; | |
72 | xfs_handle_t handle; | |
1da177e4 | 73 | struct inode *inode; |
531c3bdc | 74 | struct fd f = {0}; |
4346cdd4 | 75 | struct path path; |
2903ff01 | 76 | int error; |
4346cdd4 | 77 | struct xfs_inode *ip; |
1da177e4 | 78 | |
4346cdd4 | 79 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
80 | f = fdget(hreq->fd); |
81 | if (!f.file) | |
4346cdd4 | 82 | return -EBADF; |
496ad9aa | 83 | inode = file_inode(f.file); |
4346cdd4 CH |
84 | } else { |
85 | error = user_lpath((const char __user *)hreq->path, &path); | |
86 | if (error) | |
87 | return error; | |
88 | inode = path.dentry->d_inode; | |
1da177e4 | 89 | } |
4346cdd4 CH |
90 | ip = XFS_I(inode); |
91 | ||
92 | /* | |
93 | * We can only generate handles for inodes residing on a XFS filesystem, | |
94 | * and only for regular files, directories or symbolic links. | |
95 | */ | |
96 | error = -EINVAL; | |
97 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
98 | goto out_put; | |
99 | ||
100 | error = -EBADF; | |
101 | if (!S_ISREG(inode->i_mode) && | |
102 | !S_ISDIR(inode->i_mode) && | |
103 | !S_ISLNK(inode->i_mode)) | |
104 | goto out_put; | |
105 | ||
106 | ||
107 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
108 | ||
109 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
110 | /* | |
111 | * This handle only contains an fsid, zero the rest. | |
112 | */ | |
113 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
114 | hsize = sizeof(xfs_fsid_t); | |
115 | } else { | |
1da177e4 LT |
116 | int lock_mode; |
117 | ||
1da177e4 | 118 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
119 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
120 | sizeof(handle.ha_fid.fid_len); | |
121 | handle.ha_fid.fid_pad = 0; | |
122 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
123 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
124 | xfs_iunlock_map_shared(ip, lock_mode); |
125 | ||
126 | hsize = XFS_HSIZE(handle); | |
127 | } | |
128 | ||
4346cdd4 | 129 | error = -EFAULT; |
743bb465 | 130 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
131 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
132 | goto out_put; | |
1da177e4 | 133 | |
4346cdd4 CH |
134 | error = 0; |
135 | ||
136 | out_put: | |
137 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 138 | fdput(f); |
4346cdd4 CH |
139 | else |
140 | path_put(&path); | |
141 | return error; | |
1da177e4 LT |
142 | } |
143 | ||
1da177e4 | 144 | /* |
d296d30a CH |
145 | * No need to do permission checks on the various pathname components |
146 | * as the handle operations are privileged. | |
1da177e4 LT |
147 | */ |
148 | STATIC int | |
d296d30a CH |
149 | xfs_handle_acceptable( |
150 | void *context, | |
151 | struct dentry *dentry) | |
152 | { | |
153 | return 1; | |
154 | } | |
155 | ||
156 | /* | |
157 | * Convert userspace handle data into a dentry. | |
158 | */ | |
159 | struct dentry * | |
160 | xfs_handle_to_dentry( | |
161 | struct file *parfilp, | |
162 | void __user *uhandle, | |
163 | u32 hlen) | |
1da177e4 | 164 | { |
1da177e4 | 165 | xfs_handle_t handle; |
d296d30a | 166 | struct xfs_fid64 fid; |
1da177e4 LT |
167 | |
168 | /* | |
169 | * Only allow handle opens under a directory. | |
170 | */ | |
496ad9aa | 171 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
172 | return ERR_PTR(-ENOTDIR); |
173 | ||
174 | if (hlen != sizeof(xfs_handle_t)) | |
175 | return ERR_PTR(-EINVAL); | |
176 | if (copy_from_user(&handle, uhandle, hlen)) | |
177 | return ERR_PTR(-EFAULT); | |
178 | if (handle.ha_fid.fid_len != | |
179 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
180 | return ERR_PTR(-EINVAL); | |
181 | ||
182 | memset(&fid, 0, sizeof(struct fid)); | |
183 | fid.ino = handle.ha_fid.fid_ino; | |
184 | fid.gen = handle.ha_fid.fid_gen; | |
185 | ||
186 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
187 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
188 | xfs_handle_acceptable, NULL); | |
189 | } | |
1da177e4 | 190 | |
d296d30a CH |
191 | STATIC struct dentry * |
192 | xfs_handlereq_to_dentry( | |
193 | struct file *parfilp, | |
194 | xfs_fsop_handlereq_t *hreq) | |
195 | { | |
196 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
197 | } |
198 | ||
d5547f9f | 199 | int |
1da177e4 | 200 | xfs_open_by_handle( |
1da177e4 | 201 | struct file *parfilp, |
d296d30a | 202 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 203 | { |
745ca247 | 204 | const struct cred *cred = current_cred(); |
1da177e4 | 205 | int error; |
d296d30a | 206 | int fd; |
1da177e4 LT |
207 | int permflag; |
208 | struct file *filp; | |
209 | struct inode *inode; | |
210 | struct dentry *dentry; | |
1a1d7724 | 211 | fmode_t fmode; |
765927b2 | 212 | struct path path; |
1da177e4 LT |
213 | |
214 | if (!capable(CAP_SYS_ADMIN)) | |
215 | return -XFS_ERROR(EPERM); | |
1da177e4 | 216 | |
d296d30a CH |
217 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
218 | if (IS_ERR(dentry)) | |
219 | return PTR_ERR(dentry); | |
220 | inode = dentry->d_inode; | |
1da177e4 LT |
221 | |
222 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
223 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
224 | error = -XFS_ERROR(EPERM); |
225 | goto out_dput; | |
1da177e4 LT |
226 | } |
227 | ||
228 | #if BITS_PER_LONG != 32 | |
743bb465 | 229 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 230 | #endif |
d296d30a | 231 | |
743bb465 | 232 | permflag = hreq->oflags; |
1a1d7724 | 233 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 234 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 235 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
d296d30a CH |
236 | error = -XFS_ERROR(EPERM); |
237 | goto out_dput; | |
1da177e4 LT |
238 | } |
239 | ||
1a1d7724 | 240 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
d296d30a CH |
241 | error = -XFS_ERROR(EACCES); |
242 | goto out_dput; | |
1da177e4 LT |
243 | } |
244 | ||
245 | /* Can't write directories. */ | |
1a1d7724 | 246 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
d296d30a CH |
247 | error = -XFS_ERROR(EISDIR); |
248 | goto out_dput; | |
1da177e4 LT |
249 | } |
250 | ||
862a6293 | 251 | fd = get_unused_fd_flags(0); |
d296d30a CH |
252 | if (fd < 0) { |
253 | error = fd; | |
254 | goto out_dput; | |
1da177e4 LT |
255 | } |
256 | ||
765927b2 AV |
257 | path.mnt = parfilp->f_path.mnt; |
258 | path.dentry = dentry; | |
259 | filp = dentry_open(&path, hreq->oflags, cred); | |
260 | dput(dentry); | |
1da177e4 | 261 | if (IS_ERR(filp)) { |
d296d30a CH |
262 | put_unused_fd(fd); |
263 | return PTR_ERR(filp); | |
1da177e4 | 264 | } |
4d4be482 | 265 | |
03209378 | 266 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 267 | filp->f_flags |= O_NOATIME; |
4d4be482 | 268 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 269 | } |
1da177e4 | 270 | |
d296d30a CH |
271 | fd_install(fd, filp); |
272 | return fd; | |
273 | ||
274 | out_dput: | |
275 | dput(dentry); | |
276 | return error; | |
1da177e4 LT |
277 | } |
278 | ||
804c83c3 CH |
279 | /* |
280 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
281 | * unused first argument. | |
282 | */ | |
283 | STATIC int | |
284 | do_readlink( | |
285 | char __user *buffer, | |
286 | int buflen, | |
287 | const char *link) | |
288 | { | |
289 | int len; | |
290 | ||
291 | len = PTR_ERR(link); | |
292 | if (IS_ERR(link)) | |
293 | goto out; | |
294 | ||
295 | len = strlen(link); | |
296 | if (len > (unsigned) buflen) | |
297 | len = buflen; | |
298 | if (copy_to_user(buffer, link, len)) | |
299 | len = -EFAULT; | |
300 | out: | |
301 | return len; | |
302 | } | |
303 | ||
304 | ||
d5547f9f | 305 | int |
1da177e4 | 306 | xfs_readlink_by_handle( |
d296d30a CH |
307 | struct file *parfilp, |
308 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 309 | { |
d296d30a | 310 | struct dentry *dentry; |
1da177e4 | 311 | __u32 olen; |
804c83c3 CH |
312 | void *link; |
313 | int error; | |
1da177e4 LT |
314 | |
315 | if (!capable(CAP_SYS_ADMIN)) | |
316 | return -XFS_ERROR(EPERM); | |
1da177e4 | 317 | |
d296d30a CH |
318 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
319 | if (IS_ERR(dentry)) | |
320 | return PTR_ERR(dentry); | |
1da177e4 LT |
321 | |
322 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 323 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 324 | error = -XFS_ERROR(EINVAL); |
d296d30a | 325 | goto out_dput; |
1da177e4 LT |
326 | } |
327 | ||
743bb465 | 328 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 329 | error = -XFS_ERROR(EFAULT); |
d296d30a | 330 | goto out_dput; |
1da177e4 | 331 | } |
1da177e4 | 332 | |
804c83c3 | 333 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
334 | if (!link) { |
335 | error = -XFS_ERROR(ENOMEM); | |
336 | goto out_dput; | |
337 | } | |
1da177e4 | 338 | |
d296d30a | 339 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 340 | if (error) |
804c83c3 | 341 | goto out_kfree; |
743bb465 | 342 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
343 | if (error) |
344 | goto out_kfree; | |
67fcaa73 | 345 | |
804c83c3 CH |
346 | out_kfree: |
347 | kfree(link); | |
d296d30a CH |
348 | out_dput: |
349 | dput(dentry); | |
804c83c3 | 350 | return error; |
1da177e4 LT |
351 | } |
352 | ||
c24b5dfa DC |
353 | int |
354 | xfs_set_dmattrs( | |
355 | xfs_inode_t *ip, | |
356 | u_int evmask, | |
357 | u_int16_t state) | |
358 | { | |
359 | xfs_mount_t *mp = ip->i_mount; | |
360 | xfs_trans_t *tp; | |
361 | int error; | |
362 | ||
363 | if (!capable(CAP_SYS_ADMIN)) | |
364 | return XFS_ERROR(EPERM); | |
365 | ||
366 | if (XFS_FORCED_SHUTDOWN(mp)) | |
367 | return XFS_ERROR(EIO); | |
368 | ||
369 | tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS); | |
3d3c8b52 | 370 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
c24b5dfa DC |
371 | if (error) { |
372 | xfs_trans_cancel(tp, 0); | |
373 | return error; | |
374 | } | |
375 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
376 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
377 | ||
378 | ip->i_d.di_dmevmask = evmask; | |
379 | ip->i_d.di_dmstate = state; | |
380 | ||
381 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
382 | error = xfs_trans_commit(tp, 0); | |
383 | ||
384 | return error; | |
385 | } | |
386 | ||
1da177e4 LT |
387 | STATIC int |
388 | xfs_fssetdm_by_handle( | |
d296d30a CH |
389 | struct file *parfilp, |
390 | void __user *arg) | |
1da177e4 LT |
391 | { |
392 | int error; | |
393 | struct fsdmidata fsd; | |
394 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 395 | struct dentry *dentry; |
1da177e4 LT |
396 | |
397 | if (!capable(CAP_MKNOD)) | |
398 | return -XFS_ERROR(EPERM); | |
399 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
400 | return -XFS_ERROR(EFAULT); | |
401 | ||
d9457dc0 JK |
402 | error = mnt_want_write_file(parfilp); |
403 | if (error) | |
404 | return error; | |
405 | ||
d296d30a | 406 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
407 | if (IS_ERR(dentry)) { |
408 | mnt_drop_write_file(parfilp); | |
d296d30a | 409 | return PTR_ERR(dentry); |
d9457dc0 | 410 | } |
1da177e4 | 411 | |
d296d30a | 412 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
413 | error = -XFS_ERROR(EPERM); |
414 | goto out; | |
1da177e4 LT |
415 | } |
416 | ||
417 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
418 | error = -XFS_ERROR(EFAULT); |
419 | goto out; | |
1da177e4 LT |
420 | } |
421 | ||
d296d30a | 422 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 423 | fsd.fsd_dmstate); |
1da177e4 | 424 | |
6e7f75ea | 425 | out: |
d9457dc0 | 426 | mnt_drop_write_file(parfilp); |
d296d30a | 427 | dput(dentry); |
6e7f75ea | 428 | return error; |
1da177e4 LT |
429 | } |
430 | ||
431 | STATIC int | |
432 | xfs_attrlist_by_handle( | |
d296d30a CH |
433 | struct file *parfilp, |
434 | void __user *arg) | |
1da177e4 | 435 | { |
d296d30a | 436 | int error = -ENOMEM; |
1da177e4 LT |
437 | attrlist_cursor_kern_t *cursor; |
438 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 439 | struct dentry *dentry; |
1da177e4 LT |
440 | char *kbuf; |
441 | ||
442 | if (!capable(CAP_SYS_ADMIN)) | |
443 | return -XFS_ERROR(EPERM); | |
444 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
445 | return -XFS_ERROR(EFAULT); | |
446 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
447 | return -XFS_ERROR(EINVAL); | |
448 | ||
90ad58a8 CH |
449 | /* |
450 | * Reject flags, only allow namespaces. | |
451 | */ | |
452 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
453 | return -XFS_ERROR(EINVAL); | |
454 | ||
d296d30a CH |
455 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
456 | if (IS_ERR(dentry)) | |
457 | return PTR_ERR(dentry); | |
1da177e4 | 458 | |
dd700d94 ES |
459 | kbuf = kmem_zalloc(al_hreq.buflen, KM_SLEEP | KM_MAYFAIL); |
460 | if (!kbuf) { | |
461 | kbuf = kmem_zalloc_large(al_hreq.buflen); | |
462 | if (!kbuf) | |
463 | goto out_dput; | |
464 | } | |
1da177e4 LT |
465 | |
466 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 467 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 468 | al_hreq.flags, cursor); |
1da177e4 LT |
469 | if (error) |
470 | goto out_kfree; | |
471 | ||
472 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
473 | error = -EFAULT; | |
474 | ||
475 | out_kfree: | |
dd700d94 ES |
476 | if (is_vmalloc_addr(kbuf)) |
477 | kmem_free_large(kbuf); | |
478 | else | |
479 | kmem_free(kbuf); | |
d296d30a CH |
480 | out_dput: |
481 | dput(dentry); | |
482 | return error; | |
1da177e4 LT |
483 | } |
484 | ||
28750975 | 485 | int |
1da177e4 | 486 | xfs_attrmulti_attr_get( |
739bfb2a | 487 | struct inode *inode, |
a9273ca5 DC |
488 | unsigned char *name, |
489 | unsigned char __user *ubuf, | |
1da177e4 LT |
490 | __uint32_t *len, |
491 | __uint32_t flags) | |
492 | { | |
a9273ca5 | 493 | unsigned char *kbuf; |
1da177e4 | 494 | int error = EFAULT; |
e8b0ebaa | 495 | |
1da177e4 LT |
496 | if (*len > XATTR_SIZE_MAX) |
497 | return EINVAL; | |
ad650f5b DC |
498 | kbuf = kmem_zalloc(*len, KM_SLEEP | KM_MAYFAIL); |
499 | if (!kbuf) { | |
500 | kbuf = kmem_zalloc_large(*len); | |
501 | if (!kbuf) | |
502 | return ENOMEM; | |
503 | } | |
1da177e4 | 504 | |
e8b0ebaa | 505 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
506 | if (error) |
507 | goto out_kfree; | |
508 | ||
509 | if (copy_to_user(ubuf, kbuf, *len)) | |
510 | error = EFAULT; | |
511 | ||
512 | out_kfree: | |
ad650f5b DC |
513 | if (is_vmalloc_addr(kbuf)) |
514 | kmem_free_large(kbuf); | |
515 | else | |
516 | kmem_free(kbuf); | |
1da177e4 LT |
517 | return error; |
518 | } | |
519 | ||
28750975 | 520 | int |
1da177e4 | 521 | xfs_attrmulti_attr_set( |
739bfb2a | 522 | struct inode *inode, |
a9273ca5 DC |
523 | unsigned char *name, |
524 | const unsigned char __user *ubuf, | |
1da177e4 LT |
525 | __uint32_t len, |
526 | __uint32_t flags) | |
527 | { | |
a9273ca5 | 528 | unsigned char *kbuf; |
1da177e4 LT |
529 | int error = EFAULT; |
530 | ||
739bfb2a | 531 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
532 | return EPERM; |
533 | if (len > XATTR_SIZE_MAX) | |
534 | return EINVAL; | |
535 | ||
0e639bde LZ |
536 | kbuf = memdup_user(ubuf, len); |
537 | if (IS_ERR(kbuf)) | |
538 | return PTR_ERR(kbuf); | |
e8b0ebaa | 539 | |
739bfb2a | 540 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 | 541 | |
1da177e4 LT |
542 | return error; |
543 | } | |
544 | ||
28750975 | 545 | int |
1da177e4 | 546 | xfs_attrmulti_attr_remove( |
739bfb2a | 547 | struct inode *inode, |
a9273ca5 | 548 | unsigned char *name, |
1da177e4 LT |
549 | __uint32_t flags) |
550 | { | |
739bfb2a | 551 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 552 | return EPERM; |
739bfb2a | 553 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
554 | } |
555 | ||
556 | STATIC int | |
557 | xfs_attrmulti_by_handle( | |
42a74f20 | 558 | struct file *parfilp, |
d296d30a | 559 | void __user *arg) |
1da177e4 LT |
560 | { |
561 | int error; | |
562 | xfs_attr_multiop_t *ops; | |
563 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 564 | struct dentry *dentry; |
1da177e4 | 565 | unsigned int i, size; |
a9273ca5 | 566 | unsigned char *attr_name; |
1da177e4 LT |
567 | |
568 | if (!capable(CAP_SYS_ADMIN)) | |
569 | return -XFS_ERROR(EPERM); | |
570 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
571 | return -XFS_ERROR(EFAULT); | |
572 | ||
fda168c2 ZW |
573 | /* overflow check */ |
574 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
575 | return -E2BIG; | |
576 | ||
d296d30a CH |
577 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
578 | if (IS_ERR(dentry)) | |
579 | return PTR_ERR(dentry); | |
1da177e4 LT |
580 | |
581 | error = E2BIG; | |
e182f57a | 582 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 583 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 584 | goto out_dput; |
1da177e4 | 585 | |
0e639bde LZ |
586 | ops = memdup_user(am_hreq.ops, size); |
587 | if (IS_ERR(ops)) { | |
588 | error = PTR_ERR(ops); | |
d296d30a | 589 | goto out_dput; |
0e639bde | 590 | } |
1da177e4 LT |
591 | |
592 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
593 | if (!attr_name) | |
594 | goto out_kfree_ops; | |
595 | ||
1da177e4 LT |
596 | error = 0; |
597 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 598 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
599 | ops[i].am_attrname, MAXNAMELEN); |
600 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
601 | error = -ERANGE; | |
602 | if (ops[i].am_error < 0) | |
603 | break; | |
604 | ||
605 | switch (ops[i].am_opcode) { | |
606 | case ATTR_OP_GET: | |
d296d30a CH |
607 | ops[i].am_error = xfs_attrmulti_attr_get( |
608 | dentry->d_inode, attr_name, | |
609 | ops[i].am_attrvalue, &ops[i].am_length, | |
610 | ops[i].am_flags); | |
1da177e4 LT |
611 | break; |
612 | case ATTR_OP_SET: | |
a561be71 | 613 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
614 | if (ops[i].am_error) |
615 | break; | |
d296d30a CH |
616 | ops[i].am_error = xfs_attrmulti_attr_set( |
617 | dentry->d_inode, attr_name, | |
618 | ops[i].am_attrvalue, ops[i].am_length, | |
619 | ops[i].am_flags); | |
2a79f17e | 620 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
621 | break; |
622 | case ATTR_OP_REMOVE: | |
a561be71 | 623 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
624 | if (ops[i].am_error) |
625 | break; | |
d296d30a CH |
626 | ops[i].am_error = xfs_attrmulti_attr_remove( |
627 | dentry->d_inode, attr_name, | |
628 | ops[i].am_flags); | |
2a79f17e | 629 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
630 | break; |
631 | default: | |
632 | ops[i].am_error = EINVAL; | |
633 | } | |
634 | } | |
635 | ||
636 | if (copy_to_user(am_hreq.ops, ops, size)) | |
637 | error = XFS_ERROR(EFAULT); | |
638 | ||
639 | kfree(attr_name); | |
640 | out_kfree_ops: | |
641 | kfree(ops); | |
d296d30a CH |
642 | out_dput: |
643 | dput(dentry); | |
1da177e4 LT |
644 | return -error; |
645 | } | |
646 | ||
d5547f9f | 647 | int |
1da177e4 | 648 | xfs_ioc_space( |
993386c1 | 649 | struct xfs_inode *ip, |
f37ea149 | 650 | struct inode *inode, |
1da177e4 LT |
651 | struct file *filp, |
652 | int ioflags, | |
653 | unsigned int cmd, | |
743bb465 | 654 | xfs_flock64_t *bf) |
1da177e4 | 655 | { |
1da177e4 LT |
656 | int attr_flags = 0; |
657 | int error; | |
658 | ||
743bb465 | 659 | /* |
660 | * Only allow the sys admin to reserve space unless | |
661 | * unwritten extents are enabled. | |
662 | */ | |
663 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
664 | !capable(CAP_SYS_ADMIN)) | |
665 | return -XFS_ERROR(EPERM); | |
666 | ||
f37ea149 | 667 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
668 | return -XFS_ERROR(EPERM); |
669 | ||
ad4a8ac4 | 670 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
671 | return -XFS_ERROR(EBADF); |
672 | ||
f37ea149 | 673 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
674 | return -XFS_ERROR(EINVAL); |
675 | ||
1da177e4 | 676 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 677 | attr_flags |= XFS_ATTR_NONBLOCK; |
82878897 DC |
678 | |
679 | if (filp->f_flags & O_DSYNC) | |
680 | attr_flags |= XFS_ATTR_SYNC; | |
681 | ||
1da177e4 | 682 | if (ioflags & IO_INVIS) |
0f285c8a | 683 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 684 | |
d9457dc0 JK |
685 | error = mnt_want_write_file(filp); |
686 | if (error) | |
687 | return error; | |
743bb465 | 688 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
d9457dc0 | 689 | mnt_drop_write_file(filp); |
1da177e4 LT |
690 | return -error; |
691 | } | |
692 | ||
693 | STATIC int | |
694 | xfs_ioc_bulkstat( | |
695 | xfs_mount_t *mp, | |
696 | unsigned int cmd, | |
697 | void __user *arg) | |
698 | { | |
699 | xfs_fsop_bulkreq_t bulkreq; | |
700 | int count; /* # of records returned */ | |
701 | xfs_ino_t inlast; /* last inode number */ | |
702 | int done; | |
703 | int error; | |
704 | ||
705 | /* done = 1 if there are more stats to get and if bulkstat */ | |
706 | /* should be called again (unused here, but used in dmapi) */ | |
707 | ||
708 | if (!capable(CAP_SYS_ADMIN)) | |
709 | return -EPERM; | |
710 | ||
711 | if (XFS_FORCED_SHUTDOWN(mp)) | |
712 | return -XFS_ERROR(EIO); | |
713 | ||
714 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
715 | return -XFS_ERROR(EFAULT); | |
716 | ||
717 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
718 | return -XFS_ERROR(EFAULT); | |
719 | ||
720 | if ((count = bulkreq.icount) <= 0) | |
721 | return -XFS_ERROR(EINVAL); | |
722 | ||
cd57e594 LM |
723 | if (bulkreq.ubuffer == NULL) |
724 | return -XFS_ERROR(EINVAL); | |
725 | ||
1da177e4 LT |
726 | if (cmd == XFS_IOC_FSINUMBERS) |
727 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 728 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
729 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
730 | error = xfs_bulkstat_single(mp, &inlast, | |
731 | bulkreq.ubuffer, &done); | |
cd57e594 | 732 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
733 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
734 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
735 | &done); | |
1da177e4 LT |
736 | |
737 | if (error) | |
738 | return -error; | |
739 | ||
740 | if (bulkreq.ocount != NULL) { | |
741 | if (copy_to_user(bulkreq.lastip, &inlast, | |
742 | sizeof(xfs_ino_t))) | |
743 | return -XFS_ERROR(EFAULT); | |
744 | ||
745 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
746 | return -XFS_ERROR(EFAULT); | |
747 | } | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | STATIC int | |
753 | xfs_ioc_fsgeometry_v1( | |
754 | xfs_mount_t *mp, | |
755 | void __user *arg) | |
756 | { | |
eeb2036b | 757 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
758 | int error; |
759 | ||
eeb2036b | 760 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 LT |
761 | if (error) |
762 | return -error; | |
763 | ||
eeb2036b AE |
764 | /* |
765 | * Caller should have passed an argument of type | |
766 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
767 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
768 | */ | |
769 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
1da177e4 LT |
770 | return -XFS_ERROR(EFAULT); |
771 | return 0; | |
772 | } | |
773 | ||
774 | STATIC int | |
775 | xfs_ioc_fsgeometry( | |
776 | xfs_mount_t *mp, | |
777 | void __user *arg) | |
778 | { | |
779 | xfs_fsop_geom_t fsgeo; | |
780 | int error; | |
781 | ||
782 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
783 | if (error) | |
784 | return -error; | |
785 | ||
786 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
787 | return -XFS_ERROR(EFAULT); | |
788 | return 0; | |
789 | } | |
790 | ||
791 | /* | |
792 | * Linux extended inode flags interface. | |
793 | */ | |
1da177e4 LT |
794 | |
795 | STATIC unsigned int | |
796 | xfs_merge_ioc_xflags( | |
797 | unsigned int flags, | |
798 | unsigned int start) | |
799 | { | |
800 | unsigned int xflags = start; | |
801 | ||
39058a0e | 802 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
803 | xflags |= XFS_XFLAG_IMMUTABLE; |
804 | else | |
805 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 806 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
807 | xflags |= XFS_XFLAG_APPEND; |
808 | else | |
809 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 810 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
811 | xflags |= XFS_XFLAG_SYNC; |
812 | else | |
813 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 814 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
815 | xflags |= XFS_XFLAG_NOATIME; |
816 | else | |
817 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 818 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
819 | xflags |= XFS_XFLAG_NODUMP; |
820 | else | |
821 | xflags &= ~XFS_XFLAG_NODUMP; | |
822 | ||
823 | return xflags; | |
824 | } | |
825 | ||
826 | STATIC unsigned int | |
827 | xfs_di2lxflags( | |
828 | __uint16_t di_flags) | |
829 | { | |
830 | unsigned int flags = 0; | |
831 | ||
832 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 833 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 834 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 835 | flags |= FS_APPEND_FL; |
1da177e4 | 836 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 837 | flags |= FS_SYNC_FL; |
1da177e4 | 838 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 839 | flags |= FS_NOATIME_FL; |
1da177e4 | 840 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 841 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
842 | return flags; |
843 | } | |
844 | ||
c83bfab1 CH |
845 | STATIC int |
846 | xfs_ioc_fsgetxattr( | |
847 | xfs_inode_t *ip, | |
848 | int attr, | |
849 | void __user *arg) | |
850 | { | |
851 | struct fsxattr fa; | |
852 | ||
a122eb2f DR |
853 | memset(&fa, 0, sizeof(struct fsxattr)); |
854 | ||
c83bfab1 CH |
855 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
856 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
857 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 858 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
859 | |
860 | if (attr) { | |
861 | if (ip->i_afp) { | |
862 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
863 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
864 | sizeof(xfs_bmbt_rec_t); | |
865 | else | |
866 | fa.fsx_nextents = ip->i_d.di_anextents; | |
867 | } else | |
868 | fa.fsx_nextents = 0; | |
869 | } else { | |
870 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
871 | fa.fsx_nextents = ip->i_df.if_bytes / | |
872 | sizeof(xfs_bmbt_rec_t); | |
873 | else | |
874 | fa.fsx_nextents = ip->i_d.di_nextents; | |
875 | } | |
876 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
877 | ||
878 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
879 | return -EFAULT; | |
880 | return 0; | |
881 | } | |
882 | ||
25fe55e8 CH |
883 | STATIC void |
884 | xfs_set_diflags( | |
885 | struct xfs_inode *ip, | |
886 | unsigned int xflags) | |
887 | { | |
888 | unsigned int di_flags; | |
889 | ||
890 | /* can't set PREALLOC this way, just preserve it */ | |
891 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
892 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
893 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
894 | if (xflags & XFS_XFLAG_APPEND) | |
895 | di_flags |= XFS_DIFLAG_APPEND; | |
896 | if (xflags & XFS_XFLAG_SYNC) | |
897 | di_flags |= XFS_DIFLAG_SYNC; | |
898 | if (xflags & XFS_XFLAG_NOATIME) | |
899 | di_flags |= XFS_DIFLAG_NOATIME; | |
900 | if (xflags & XFS_XFLAG_NODUMP) | |
901 | di_flags |= XFS_DIFLAG_NODUMP; | |
902 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
903 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
904 | if (xflags & XFS_XFLAG_NODEFRAG) | |
905 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
906 | if (xflags & XFS_XFLAG_FILESTREAM) | |
907 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
abbede1b | 908 | if (S_ISDIR(ip->i_d.di_mode)) { |
25fe55e8 CH |
909 | if (xflags & XFS_XFLAG_RTINHERIT) |
910 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
911 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
912 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
913 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
914 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
abbede1b | 915 | } else if (S_ISREG(ip->i_d.di_mode)) { |
25fe55e8 CH |
916 | if (xflags & XFS_XFLAG_REALTIME) |
917 | di_flags |= XFS_DIFLAG_REALTIME; | |
918 | if (xflags & XFS_XFLAG_EXTSIZE) | |
919 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
920 | } | |
921 | ||
922 | ip->i_d.di_flags = di_flags; | |
923 | } | |
924 | ||
f13fae2d CH |
925 | STATIC void |
926 | xfs_diflags_to_linux( | |
927 | struct xfs_inode *ip) | |
928 | { | |
e4f75291 | 929 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
930 | unsigned int xflags = xfs_ip2xflags(ip); |
931 | ||
932 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
933 | inode->i_flags |= S_IMMUTABLE; | |
934 | else | |
935 | inode->i_flags &= ~S_IMMUTABLE; | |
936 | if (xflags & XFS_XFLAG_APPEND) | |
937 | inode->i_flags |= S_APPEND; | |
938 | else | |
939 | inode->i_flags &= ~S_APPEND; | |
940 | if (xflags & XFS_XFLAG_SYNC) | |
941 | inode->i_flags |= S_SYNC; | |
942 | else | |
943 | inode->i_flags &= ~S_SYNC; | |
944 | if (xflags & XFS_XFLAG_NOATIME) | |
945 | inode->i_flags |= S_NOATIME; | |
946 | else | |
947 | inode->i_flags &= ~S_NOATIME; | |
948 | } | |
25fe55e8 CH |
949 | |
950 | #define FSX_PROJID 1 | |
951 | #define FSX_EXTSIZE 2 | |
952 | #define FSX_XFLAGS 4 | |
953 | #define FSX_NONBLOCK 8 | |
954 | ||
955 | STATIC int | |
956 | xfs_ioctl_setattr( | |
957 | xfs_inode_t *ip, | |
958 | struct fsxattr *fa, | |
959 | int mask) | |
960 | { | |
961 | struct xfs_mount *mp = ip->i_mount; | |
962 | struct xfs_trans *tp; | |
963 | unsigned int lock_flags = 0; | |
7d095257 | 964 | struct xfs_dquot *udqp = NULL; |
92f8ff73 | 965 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
966 | struct xfs_dquot *olddquot = NULL; |
967 | int code; | |
968 | ||
cca28fb8 | 969 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 CH |
970 | |
971 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
972 | return XFS_ERROR(EROFS); | |
973 | if (XFS_FORCED_SHUTDOWN(mp)) | |
974 | return XFS_ERROR(EIO); | |
975 | ||
23963e54 | 976 | /* |
6743099c | 977 | * Disallow 32bit project ids when projid32bit feature is not enabled. |
23963e54 | 978 | */ |
6743099c AM |
979 | if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && |
980 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
23963e54 AM |
981 | return XFS_ERROR(EINVAL); |
982 | ||
25fe55e8 CH |
983 | /* |
984 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
985 | * before we start any other transactions. Trying to do this later | |
986 | * is messy. We don't care to take a readlock to look at the ids | |
987 | * in inode here, because we can't hold it across the trans_reserve. | |
988 | * If the IDs do change before we take the ilock, we're covered | |
989 | * because the i_*dquot fields will get updated anyway. | |
990 | */ | |
991 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
7d095257 | 992 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 | 993 | ip->i_d.di_gid, fa->fsx_projid, |
92f8ff73 | 994 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
25fe55e8 CH |
995 | if (code) |
996 | return code; | |
997 | } | |
998 | ||
999 | /* | |
1000 | * For the other attributes, we acquire the inode lock and | |
1001 | * first do an error checking pass. | |
1002 | */ | |
1003 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
3d3c8b52 | 1004 | code = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
25fe55e8 CH |
1005 | if (code) |
1006 | goto error_return; | |
1007 | ||
1008 | lock_flags = XFS_ILOCK_EXCL; | |
1009 | xfs_ilock(ip, lock_flags); | |
1010 | ||
1011 | /* | |
1012 | * CAP_FOWNER overrides the following restrictions: | |
1013 | * | |
1014 | * The user ID of the calling process must be equal | |
1015 | * to the file owner ID, except in cases where the | |
1016 | * CAP_FSETID capability is applicable. | |
1017 | */ | |
fd5e2aa8 | 1018 | if (!inode_owner_or_capable(VFS_I(ip))) { |
25fe55e8 CH |
1019 | code = XFS_ERROR(EPERM); |
1020 | goto error_return; | |
1021 | } | |
1022 | ||
1023 | /* | |
1024 | * Do a quota reservation only if projid is actually going to change. | |
fd5e2aa8 DE |
1025 | * Only allow changing of projid from init_user_ns since it is a |
1026 | * non user namespace aware identifier. | |
25fe55e8 CH |
1027 | */ |
1028 | if (mask & FSX_PROJID) { | |
fd5e2aa8 DE |
1029 | if (current_user_ns() != &init_user_ns) { |
1030 | code = XFS_ERROR(EINVAL); | |
1031 | goto error_return; | |
1032 | } | |
1033 | ||
7d095257 CH |
1034 | if (XFS_IS_QUOTA_RUNNING(mp) && |
1035 | XFS_IS_PQUOTA_ON(mp) && | |
6743099c | 1036 | xfs_get_projid(ip) != fa->fsx_projid) { |
25fe55e8 | 1037 | ASSERT(tp); |
92f8ff73 CS |
1038 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, |
1039 | pdqp, capable(CAP_FOWNER) ? | |
25fe55e8 CH |
1040 | XFS_QMOPT_FORCE_RES : 0); |
1041 | if (code) /* out of quota */ | |
1042 | goto error_return; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | if (mask & FSX_EXTSIZE) { | |
1047 | /* | |
1048 | * Can't change extent size if any extents are allocated. | |
1049 | */ | |
1050 | if (ip->i_d.di_nextents && | |
1051 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
1052 | fa->fsx_extsize)) { | |
1053 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1054 | goto error_return; | |
1055 | } | |
1056 | ||
1057 | /* | |
1058 | * Extent size must be a multiple of the appropriate block | |
5315837d DC |
1059 | * size, if set at all. It must also be smaller than the |
1060 | * maximum extent size supported by the filesystem. | |
1061 | * | |
1062 | * Also, for non-realtime files, limit the extent size hint to | |
1063 | * half the size of the AGs in the filesystem so alignment | |
1064 | * doesn't result in extents larger than an AG. | |
25fe55e8 CH |
1065 | */ |
1066 | if (fa->fsx_extsize != 0) { | |
5315837d DC |
1067 | xfs_extlen_t size; |
1068 | xfs_fsblock_t extsize_fsb; | |
1069 | ||
1070 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1071 | if (extsize_fsb > MAXEXTLEN) { | |
1072 | code = XFS_ERROR(EINVAL); | |
1073 | goto error_return; | |
1074 | } | |
25fe55e8 CH |
1075 | |
1076 | if (XFS_IS_REALTIME_INODE(ip) || | |
1077 | ((mask & FSX_XFLAGS) && | |
1078 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
1079 | size = mp->m_sb.sb_rextsize << | |
1080 | mp->m_sb.sb_blocklog; | |
1081 | } else { | |
1082 | size = mp->m_sb.sb_blocksize; | |
5315837d DC |
1083 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { |
1084 | code = XFS_ERROR(EINVAL); | |
1085 | goto error_return; | |
1086 | } | |
25fe55e8 CH |
1087 | } |
1088 | ||
1089 | if (fa->fsx_extsize % size) { | |
1090 | code = XFS_ERROR(EINVAL); | |
1091 | goto error_return; | |
1092 | } | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | ||
1097 | if (mask & FSX_XFLAGS) { | |
1098 | /* | |
1099 | * Can't change realtime flag if any extents are allocated. | |
1100 | */ | |
1101 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1102 | (XFS_IS_REALTIME_INODE(ip)) != | |
1103 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1104 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1105 | goto error_return; | |
1106 | } | |
1107 | ||
1108 | /* | |
1109 | * If realtime flag is set then must have realtime data. | |
1110 | */ | |
1111 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1112 | if ((mp->m_sb.sb_rblocks == 0) || | |
1113 | (mp->m_sb.sb_rextsize == 0) || | |
1114 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1115 | code = XFS_ERROR(EINVAL); | |
1116 | goto error_return; | |
1117 | } | |
1118 | } | |
1119 | ||
1120 | /* | |
1121 | * Can't modify an immutable/append-only file unless | |
1122 | * we have appropriate permission. | |
1123 | */ | |
1124 | if ((ip->i_d.di_flags & | |
1125 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1126 | (fa->fsx_xflags & | |
1127 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1128 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1129 | code = XFS_ERROR(EPERM); | |
1130 | goto error_return; | |
1131 | } | |
1132 | } | |
1133 | ||
ddc3415a | 1134 | xfs_trans_ijoin(tp, ip, 0); |
25fe55e8 CH |
1135 | |
1136 | /* | |
1137 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1138 | */ |
1139 | if (mask & FSX_PROJID) { | |
1140 | /* | |
1141 | * CAP_FSETID overrides the following restrictions: | |
1142 | * | |
1143 | * The set-user-ID and set-group-ID bits of a file will be | |
1144 | * cleared upon successful return from chown() | |
1145 | */ | |
1146 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
fd5e2aa8 | 1147 | !inode_capable(VFS_I(ip), CAP_FSETID)) |
25fe55e8 CH |
1148 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); |
1149 | ||
1150 | /* | |
1151 | * Change the ownerships and register quota modifications | |
1152 | * in the transaction. | |
1153 | */ | |
6743099c | 1154 | if (xfs_get_projid(ip) != fa->fsx_projid) { |
7d095257 CH |
1155 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1156 | olddquot = xfs_qm_vop_chown(tp, ip, | |
92f8ff73 | 1157 | &ip->i_pdquot, pdqp); |
25fe55e8 | 1158 | } |
6743099c | 1159 | xfs_set_projid(ip, fa->fsx_projid); |
25fe55e8 CH |
1160 | |
1161 | /* | |
1162 | * We may have to rev the inode as well as | |
1163 | * the superblock version number since projids didn't | |
1164 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1165 | */ | |
51ce16d5 | 1166 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1167 | xfs_bump_ino_vers2(tp, ip); |
1168 | } | |
1169 | ||
1170 | } | |
1171 | ||
1172 | if (mask & FSX_EXTSIZE) | |
1173 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1174 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1175 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1176 | xfs_diflags_to_linux(ip); |
1177 | } | |
25fe55e8 | 1178 | |
dcd79a14 | 1179 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); |
25fe55e8 | 1180 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
25fe55e8 CH |
1181 | |
1182 | XFS_STATS_INC(xs_ig_attrchg); | |
1183 | ||
1184 | /* | |
1185 | * If this is a synchronous mount, make sure that the | |
1186 | * transaction goes to disk before returning to the user. | |
1187 | * This is slightly sub-optimal in that truncates require | |
1188 | * two sync transactions instead of one for wsync filesystems. | |
1189 | * One for the truncate and one for the timestamps since we | |
1190 | * don't want to change the timestamps unless we're sure the | |
1191 | * truncate worked. Truncates are less than 1% of the laddis | |
1192 | * mix so this probably isn't worth the trouble to optimize. | |
1193 | */ | |
1194 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1195 | xfs_trans_set_sync(tp); | |
1196 | code = xfs_trans_commit(tp, 0); | |
1197 | xfs_iunlock(ip, lock_flags); | |
1198 | ||
1199 | /* | |
1200 | * Release any dquot(s) the inode had kept before chown. | |
1201 | */ | |
7d095257 CH |
1202 | xfs_qm_dqrele(olddquot); |
1203 | xfs_qm_dqrele(udqp); | |
92f8ff73 | 1204 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1205 | |
288699fe | 1206 | return code; |
25fe55e8 CH |
1207 | |
1208 | error_return: | |
7d095257 | 1209 | xfs_qm_dqrele(udqp); |
92f8ff73 | 1210 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1211 | xfs_trans_cancel(tp, 0); |
1212 | if (lock_flags) | |
1213 | xfs_iunlock(ip, lock_flags); | |
1214 | return code; | |
1215 | } | |
1216 | ||
1da177e4 | 1217 | STATIC int |
df26cfe8 | 1218 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1219 | xfs_inode_t *ip, |
1220 | struct file *filp, | |
1da177e4 LT |
1221 | void __user *arg) |
1222 | { | |
1223 | struct fsxattr fa; | |
25fe55e8 | 1224 | unsigned int mask; |
d9457dc0 | 1225 | int error; |
df26cfe8 LM |
1226 | |
1227 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1228 | return -EFAULT; | |
1da177e4 | 1229 | |
25fe55e8 | 1230 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1231 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1232 | mask |= FSX_NONBLOCK; |
1da177e4 | 1233 | |
d9457dc0 JK |
1234 | error = mnt_want_write_file(filp); |
1235 | if (error) | |
1236 | return error; | |
1237 | error = xfs_ioctl_setattr(ip, &fa, mask); | |
1238 | mnt_drop_write_file(filp); | |
1239 | return -error; | |
df26cfe8 | 1240 | } |
1da177e4 | 1241 | |
df26cfe8 LM |
1242 | STATIC int |
1243 | xfs_ioc_getxflags( | |
1244 | xfs_inode_t *ip, | |
1245 | void __user *arg) | |
1246 | { | |
1247 | unsigned int flags; | |
1da177e4 | 1248 | |
df26cfe8 LM |
1249 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1250 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1251 | return -EFAULT; | |
1252 | return 0; | |
1253 | } | |
1da177e4 | 1254 | |
df26cfe8 LM |
1255 | STATIC int |
1256 | xfs_ioc_setxflags( | |
1257 | xfs_inode_t *ip, | |
1258 | struct file *filp, | |
1259 | void __user *arg) | |
1260 | { | |
25fe55e8 | 1261 | struct fsxattr fa; |
df26cfe8 | 1262 | unsigned int flags; |
25fe55e8 | 1263 | unsigned int mask; |
d9457dc0 | 1264 | int error; |
1da177e4 | 1265 | |
df26cfe8 LM |
1266 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1267 | return -EFAULT; | |
1da177e4 | 1268 | |
df26cfe8 LM |
1269 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1270 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1271 | FS_SYNC_FL)) | |
1272 | return -EOPNOTSUPP; | |
1da177e4 | 1273 | |
25fe55e8 | 1274 | mask = FSX_XFLAGS; |
df26cfe8 | 1275 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1276 | mask |= FSX_NONBLOCK; |
1277 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1278 | |
d9457dc0 JK |
1279 | error = mnt_want_write_file(filp); |
1280 | if (error) | |
1281 | return error; | |
1282 | error = xfs_ioctl_setattr(ip, &fa, mask); | |
1283 | mnt_drop_write_file(filp); | |
1284 | return -error; | |
1da177e4 LT |
1285 | } |
1286 | ||
8a7141a8 ES |
1287 | STATIC int |
1288 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1289 | { | |
1290 | struct getbmap __user *base = *ap; | |
1291 | ||
1292 | /* copy only getbmap portion (not getbmapx) */ | |
1293 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1294 | return XFS_ERROR(EFAULT); | |
1295 | ||
1296 | *ap += sizeof(struct getbmap); | |
1297 | return 0; | |
1298 | } | |
1299 | ||
1da177e4 LT |
1300 | STATIC int |
1301 | xfs_ioc_getbmap( | |
993386c1 | 1302 | struct xfs_inode *ip, |
1da177e4 LT |
1303 | int ioflags, |
1304 | unsigned int cmd, | |
1305 | void __user *arg) | |
1306 | { | |
8a7141a8 | 1307 | struct getbmapx bmx; |
1da177e4 LT |
1308 | int error; |
1309 | ||
8a7141a8 | 1310 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1311 | return -XFS_ERROR(EFAULT); |
1312 | ||
8a7141a8 | 1313 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1314 | return -XFS_ERROR(EINVAL); |
1315 | ||
8a7141a8 | 1316 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1317 | if (ioflags & IO_INVIS) |
8a7141a8 | 1318 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1319 | |
8a7141a8 ES |
1320 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1321 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1322 | if (error) |
1323 | return -error; | |
1324 | ||
8a7141a8 ES |
1325 | /* copy back header - only size of getbmap */ |
1326 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1327 | return -XFS_ERROR(EFAULT); |
1328 | return 0; | |
1329 | } | |
1330 | ||
8a7141a8 ES |
1331 | STATIC int |
1332 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1333 | { | |
1334 | struct getbmapx __user *base = *ap; | |
1335 | ||
1336 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1337 | return XFS_ERROR(EFAULT); | |
1338 | ||
1339 | *ap += sizeof(struct getbmapx); | |
1340 | return 0; | |
1341 | } | |
1342 | ||
1da177e4 LT |
1343 | STATIC int |
1344 | xfs_ioc_getbmapx( | |
993386c1 | 1345 | struct xfs_inode *ip, |
1da177e4 LT |
1346 | void __user *arg) |
1347 | { | |
1348 | struct getbmapx bmx; | |
1da177e4 LT |
1349 | int error; |
1350 | ||
1351 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1352 | return -XFS_ERROR(EFAULT); | |
1353 | ||
1354 | if (bmx.bmv_count < 2) | |
1355 | return -XFS_ERROR(EINVAL); | |
1356 | ||
8a7141a8 | 1357 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1358 | return -XFS_ERROR(EINVAL); |
1359 | ||
8a7141a8 ES |
1360 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1361 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1362 | if (error) |
1363 | return -error; | |
1364 | ||
8a7141a8 ES |
1365 | /* copy back header */ |
1366 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1367 | return -XFS_ERROR(EFAULT); |
1368 | ||
1369 | return 0; | |
1370 | } | |
df26cfe8 | 1371 | |
a133d952 DC |
1372 | int |
1373 | xfs_ioc_swapext( | |
1374 | xfs_swapext_t *sxp) | |
1375 | { | |
1376 | xfs_inode_t *ip, *tip; | |
1377 | struct fd f, tmp; | |
1378 | int error = 0; | |
1379 | ||
1380 | /* Pull information for the target fd */ | |
1381 | f = fdget((int)sxp->sx_fdtarget); | |
1382 | if (!f.file) { | |
1383 | error = XFS_ERROR(EINVAL); | |
1384 | goto out; | |
1385 | } | |
1386 | ||
1387 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1388 | !(f.file->f_mode & FMODE_READ) || | |
1389 | (f.file->f_flags & O_APPEND)) { | |
1390 | error = XFS_ERROR(EBADF); | |
1391 | goto out_put_file; | |
1392 | } | |
1393 | ||
1394 | tmp = fdget((int)sxp->sx_fdtmp); | |
1395 | if (!tmp.file) { | |
1396 | error = XFS_ERROR(EINVAL); | |
1397 | goto out_put_file; | |
1398 | } | |
1399 | ||
1400 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1401 | !(tmp.file->f_mode & FMODE_READ) || | |
1402 | (tmp.file->f_flags & O_APPEND)) { | |
1403 | error = XFS_ERROR(EBADF); | |
1404 | goto out_put_tmp_file; | |
1405 | } | |
1406 | ||
1407 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1408 | IS_SWAPFILE(file_inode(tmp.file))) { | |
1409 | error = XFS_ERROR(EINVAL); | |
1410 | goto out_put_tmp_file; | |
1411 | } | |
1412 | ||
1413 | ip = XFS_I(file_inode(f.file)); | |
1414 | tip = XFS_I(file_inode(tmp.file)); | |
1415 | ||
1416 | if (ip->i_mount != tip->i_mount) { | |
1417 | error = XFS_ERROR(EINVAL); | |
1418 | goto out_put_tmp_file; | |
1419 | } | |
1420 | ||
1421 | if (ip->i_ino == tip->i_ino) { | |
1422 | error = XFS_ERROR(EINVAL); | |
1423 | goto out_put_tmp_file; | |
1424 | } | |
1425 | ||
1426 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
1427 | error = XFS_ERROR(EIO); | |
1428 | goto out_put_tmp_file; | |
1429 | } | |
1430 | ||
1431 | error = xfs_swap_extents(ip, tip, sxp); | |
1432 | ||
1433 | out_put_tmp_file: | |
1434 | fdput(tmp); | |
1435 | out_put_file: | |
1436 | fdput(f); | |
1437 | out: | |
1438 | return error; | |
1439 | } | |
1440 | ||
4d4be482 CH |
1441 | /* |
1442 | * Note: some of the ioctl's return positive numbers as a | |
1443 | * byte count indicating success, such as readlink_by_handle. | |
1444 | * So we don't "sign flip" like most other routines. This means | |
1445 | * true errors need to be returned as a negative value. | |
1446 | */ | |
1447 | long | |
1448 | xfs_file_ioctl( | |
df26cfe8 | 1449 | struct file *filp, |
df26cfe8 | 1450 | unsigned int cmd, |
4d4be482 | 1451 | unsigned long p) |
df26cfe8 | 1452 | { |
496ad9aa | 1453 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1454 | struct xfs_inode *ip = XFS_I(inode); |
1455 | struct xfs_mount *mp = ip->i_mount; | |
1456 | void __user *arg = (void __user *)p; | |
1457 | int ioflags = 0; | |
df26cfe8 LM |
1458 | int error; |
1459 | ||
4d4be482 CH |
1460 | if (filp->f_mode & FMODE_NOCMTIME) |
1461 | ioflags |= IO_INVIS; | |
df26cfe8 | 1462 | |
cca28fb8 | 1463 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1464 | |
1465 | switch (cmd) { | |
a46db608 CH |
1466 | case FITRIM: |
1467 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1468 | case XFS_IOC_ALLOCSP: |
1469 | case XFS_IOC_FREESP: | |
1470 | case XFS_IOC_RESVSP: | |
1471 | case XFS_IOC_UNRESVSP: | |
1472 | case XFS_IOC_ALLOCSP64: | |
1473 | case XFS_IOC_FREESP64: | |
1474 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1475 | case XFS_IOC_UNRESVSP64: |
1476 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1477 | xfs_flock64_t bf; |
df26cfe8 | 1478 | |
743bb465 | 1479 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1480 | return -XFS_ERROR(EFAULT); | |
1481 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1482 | } | |
df26cfe8 LM |
1483 | case XFS_IOC_DIOINFO: { |
1484 | struct dioattr da; | |
1485 | xfs_buftarg_t *target = | |
1486 | XFS_IS_REALTIME_INODE(ip) ? | |
1487 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1488 | ||
1489 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1490 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1491 | ||
1492 | if (copy_to_user(arg, &da, sizeof(da))) | |
1493 | return -XFS_ERROR(EFAULT); | |
1494 | return 0; | |
1495 | } | |
1496 | ||
1497 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1498 | case XFS_IOC_FSBULKSTAT: | |
1499 | case XFS_IOC_FSINUMBERS: | |
1500 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1501 | ||
1502 | case XFS_IOC_FSGEOMETRY_V1: | |
1503 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1504 | ||
1505 | case XFS_IOC_FSGEOMETRY: | |
1506 | return xfs_ioc_fsgeometry(mp, arg); | |
1507 | ||
1508 | case XFS_IOC_GETVERSION: | |
1509 | return put_user(inode->i_generation, (int __user *)arg); | |
1510 | ||
1511 | case XFS_IOC_FSGETXATTR: | |
1512 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1513 | case XFS_IOC_FSGETXATTRA: | |
1514 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1515 | case XFS_IOC_FSSETXATTR: |
1516 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1517 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1518 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1519 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1520 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1521 | |
1522 | case XFS_IOC_FSSETDM: { | |
1523 | struct fsdmidata dmi; | |
1524 | ||
1525 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1526 | return -XFS_ERROR(EFAULT); | |
1527 | ||
d9457dc0 JK |
1528 | error = mnt_want_write_file(filp); |
1529 | if (error) | |
1530 | return error; | |
1531 | ||
df26cfe8 LM |
1532 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1533 | dmi.fsd_dmstate); | |
d9457dc0 | 1534 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1535 | return -error; |
1536 | } | |
1537 | ||
1538 | case XFS_IOC_GETBMAP: | |
1539 | case XFS_IOC_GETBMAPA: | |
1540 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1541 | ||
1542 | case XFS_IOC_GETBMAPX: | |
1543 | return xfs_ioc_getbmapx(ip, arg); | |
1544 | ||
1545 | case XFS_IOC_FD_TO_HANDLE: | |
1546 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1547 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1548 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1549 | |
743bb465 | 1550 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1551 | return -XFS_ERROR(EFAULT); | |
1552 | return xfs_find_handle(cmd, &hreq); | |
1553 | } | |
1554 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1555 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1556 | |
743bb465 | 1557 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1558 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1559 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1560 | } |
df26cfe8 | 1561 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1562 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1563 | |
743bb465 | 1564 | case XFS_IOC_READLINK_BY_HANDLE: { |
1565 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1566 | |
743bb465 | 1567 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1568 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1569 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1570 | } |
df26cfe8 | 1571 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1572 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1573 | |
1574 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1575 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1576 | |
1577 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1578 | struct xfs_swapext sxp; |
1579 | ||
1580 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1581 | return -XFS_ERROR(EFAULT); | |
d9457dc0 JK |
1582 | error = mnt_want_write_file(filp); |
1583 | if (error) | |
1584 | return error; | |
a133d952 | 1585 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 1586 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1587 | return -error; |
1588 | } | |
1589 | ||
1590 | case XFS_IOC_FSCOUNTS: { | |
1591 | xfs_fsop_counts_t out; | |
1592 | ||
1593 | error = xfs_fs_counts(mp, &out); | |
1594 | if (error) | |
1595 | return -error; | |
1596 | ||
1597 | if (copy_to_user(arg, &out, sizeof(out))) | |
1598 | return -XFS_ERROR(EFAULT); | |
1599 | return 0; | |
1600 | } | |
1601 | ||
1602 | case XFS_IOC_SET_RESBLKS: { | |
1603 | xfs_fsop_resblks_t inout; | |
1604 | __uint64_t in; | |
1605 | ||
1606 | if (!capable(CAP_SYS_ADMIN)) | |
1607 | return -EPERM; | |
1608 | ||
d5db0f97 ES |
1609 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
1610 | return -XFS_ERROR(EROFS); | |
1611 | ||
df26cfe8 LM |
1612 | if (copy_from_user(&inout, arg, sizeof(inout))) |
1613 | return -XFS_ERROR(EFAULT); | |
1614 | ||
d9457dc0 JK |
1615 | error = mnt_want_write_file(filp); |
1616 | if (error) | |
1617 | return error; | |
1618 | ||
df26cfe8 LM |
1619 | /* input parameter is passed in resblks field of structure */ |
1620 | in = inout.resblks; | |
1621 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1622 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1623 | if (error) |
1624 | return -error; | |
1625 | ||
1626 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1627 | return -XFS_ERROR(EFAULT); | |
1628 | return 0; | |
1629 | } | |
1630 | ||
1631 | case XFS_IOC_GET_RESBLKS: { | |
1632 | xfs_fsop_resblks_t out; | |
1633 | ||
1634 | if (!capable(CAP_SYS_ADMIN)) | |
1635 | return -EPERM; | |
1636 | ||
1637 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1638 | if (error) | |
1639 | return -error; | |
1640 | ||
1641 | if (copy_to_user(arg, &out, sizeof(out))) | |
1642 | return -XFS_ERROR(EFAULT); | |
1643 | ||
1644 | return 0; | |
1645 | } | |
1646 | ||
1647 | case XFS_IOC_FSGROWFSDATA: { | |
1648 | xfs_growfs_data_t in; | |
1649 | ||
df26cfe8 LM |
1650 | if (copy_from_user(&in, arg, sizeof(in))) |
1651 | return -XFS_ERROR(EFAULT); | |
1652 | ||
d9457dc0 JK |
1653 | error = mnt_want_write_file(filp); |
1654 | if (error) | |
1655 | return error; | |
df26cfe8 | 1656 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1657 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1658 | return -error; |
1659 | } | |
1660 | ||
1661 | case XFS_IOC_FSGROWFSLOG: { | |
1662 | xfs_growfs_log_t in; | |
1663 | ||
df26cfe8 LM |
1664 | if (copy_from_user(&in, arg, sizeof(in))) |
1665 | return -XFS_ERROR(EFAULT); | |
1666 | ||
d9457dc0 JK |
1667 | error = mnt_want_write_file(filp); |
1668 | if (error) | |
1669 | return error; | |
df26cfe8 | 1670 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 1671 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1672 | return -error; |
1673 | } | |
1674 | ||
1675 | case XFS_IOC_FSGROWFSRT: { | |
1676 | xfs_growfs_rt_t in; | |
1677 | ||
df26cfe8 LM |
1678 | if (copy_from_user(&in, arg, sizeof(in))) |
1679 | return -XFS_ERROR(EFAULT); | |
1680 | ||
d9457dc0 JK |
1681 | error = mnt_want_write_file(filp); |
1682 | if (error) | |
1683 | return error; | |
df26cfe8 | 1684 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 1685 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1686 | return -error; |
1687 | } | |
1688 | ||
df26cfe8 LM |
1689 | case XFS_IOC_GOINGDOWN: { |
1690 | __uint32_t in; | |
1691 | ||
1692 | if (!capable(CAP_SYS_ADMIN)) | |
1693 | return -EPERM; | |
1694 | ||
1695 | if (get_user(in, (__uint32_t __user *)arg)) | |
1696 | return -XFS_ERROR(EFAULT); | |
1697 | ||
1698 | error = xfs_fs_goingdown(mp, in); | |
1699 | return -error; | |
1700 | } | |
1701 | ||
1702 | case XFS_IOC_ERROR_INJECTION: { | |
1703 | xfs_error_injection_t in; | |
1704 | ||
1705 | if (!capable(CAP_SYS_ADMIN)) | |
1706 | return -EPERM; | |
1707 | ||
1708 | if (copy_from_user(&in, arg, sizeof(in))) | |
1709 | return -XFS_ERROR(EFAULT); | |
1710 | ||
1711 | error = xfs_errortag_add(in.errtag, mp); | |
1712 | return -error; | |
1713 | } | |
1714 | ||
1715 | case XFS_IOC_ERROR_CLEARALL: | |
1716 | if (!capable(CAP_SYS_ADMIN)) | |
1717 | return -EPERM; | |
1718 | ||
1719 | error = xfs_errortag_clearall(mp, 1); | |
1720 | return -error; | |
1721 | ||
8ca149de | 1722 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
1723 | struct xfs_fs_eofblocks eofb; |
1724 | struct xfs_eofblocks keofb; | |
8ca149de | 1725 | |
8c567a7f DE |
1726 | if (!capable(CAP_SYS_ADMIN)) |
1727 | return -EPERM; | |
1728 | ||
1729 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
1730 | return -XFS_ERROR(EROFS); | |
1731 | ||
8ca149de BF |
1732 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
1733 | return -XFS_ERROR(EFAULT); | |
1734 | ||
b9fe5052 DE |
1735 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
1736 | if (error) | |
1737 | return -error; | |
8ca149de | 1738 | |
b9fe5052 | 1739 | return -xfs_icache_free_eofblocks(mp, &keofb); |
8ca149de BF |
1740 | } |
1741 | ||
df26cfe8 LM |
1742 | default: |
1743 | return -ENOTTY; | |
1744 | } | |
1745 | } |