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Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
1da177e4 | 19 | #include "xfs_fs.h" |
70a9883c | 20 | #include "xfs_shared.h" |
239880ef DC |
21 | #include "xfs_format.h" |
22 | #include "xfs_log_format.h" | |
23 | #include "xfs_trans_resv.h" | |
1da177e4 | 24 | #include "xfs_mount.h" |
1da177e4 | 25 | #include "xfs_inode.h" |
7bf446f8 | 26 | #include "xfs_ioctl.h" |
a4fbe6ab | 27 | #include "xfs_alloc.h" |
1da177e4 | 28 | #include "xfs_rtalloc.h" |
1da177e4 | 29 | #include "xfs_itable.h" |
a844f451 | 30 | #include "xfs_error.h" |
1da177e4 | 31 | #include "xfs_attr.h" |
a844f451 | 32 | #include "xfs_bmap.h" |
68988114 | 33 | #include "xfs_bmap_util.h" |
1da177e4 | 34 | #include "xfs_fsops.h" |
a46db608 | 35 | #include "xfs_discard.h" |
25fe55e8 | 36 | #include "xfs_quota.h" |
d296d30a | 37 | #include "xfs_export.h" |
0b1b213f | 38 | #include "xfs_trace.h" |
8ca149de | 39 | #include "xfs_icache.h" |
c24b5dfa | 40 | #include "xfs_symlink.h" |
a4fbe6ab | 41 | #include "xfs_trans.h" |
781355c6 | 42 | #include "xfs_pnfs.h" |
47e1bf64 | 43 | #include "xfs_acl.h" |
e89c0413 DW |
44 | #include "xfs_btree.h" |
45 | #include <linux/fsmap.h> | |
46 | #include "xfs_fsmap.h" | |
1da177e4 | 47 | |
16f7e0fe | 48 | #include <linux/capability.h> |
5b825c3a | 49 | #include <linux/cred.h> |
1da177e4 LT |
50 | #include <linux/dcache.h> |
51 | #include <linux/mount.h> | |
52 | #include <linux/namei.h> | |
53 | #include <linux/pagemap.h> | |
5a0e3ad6 | 54 | #include <linux/slab.h> |
d296d30a | 55 | #include <linux/exportfs.h> |
1da177e4 LT |
56 | |
57 | /* | |
58 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
59 | * a file or fs handle. | |
60 | * | |
61 | * XFS_IOC_PATH_TO_FSHANDLE | |
62 | * returns fs handle for a mount point or path within that mount point | |
63 | * XFS_IOC_FD_TO_HANDLE | |
64 | * returns full handle for a FD opened in user space | |
65 | * XFS_IOC_PATH_TO_HANDLE | |
66 | * returns full handle for a path | |
67 | */ | |
d5547f9f | 68 | int |
1da177e4 LT |
69 | xfs_find_handle( |
70 | unsigned int cmd, | |
743bb465 | 71 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
72 | { |
73 | int hsize; | |
74 | xfs_handle_t handle; | |
1da177e4 | 75 | struct inode *inode; |
a30b0367 | 76 | struct fd f = {NULL}; |
4346cdd4 | 77 | struct path path; |
2903ff01 | 78 | int error; |
4346cdd4 | 79 | struct xfs_inode *ip; |
1da177e4 | 80 | |
4346cdd4 | 81 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
82 | f = fdget(hreq->fd); |
83 | if (!f.file) | |
4346cdd4 | 84 | return -EBADF; |
496ad9aa | 85 | inode = file_inode(f.file); |
4346cdd4 CH |
86 | } else { |
87 | error = user_lpath((const char __user *)hreq->path, &path); | |
88 | if (error) | |
89 | return error; | |
2b0143b5 | 90 | inode = d_inode(path.dentry); |
1da177e4 | 91 | } |
4346cdd4 CH |
92 | ip = XFS_I(inode); |
93 | ||
94 | /* | |
95 | * We can only generate handles for inodes residing on a XFS filesystem, | |
96 | * and only for regular files, directories or symbolic links. | |
97 | */ | |
98 | error = -EINVAL; | |
99 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
100 | goto out_put; | |
101 | ||
102 | error = -EBADF; | |
103 | if (!S_ISREG(inode->i_mode) && | |
104 | !S_ISDIR(inode->i_mode) && | |
105 | !S_ISLNK(inode->i_mode)) | |
106 | goto out_put; | |
107 | ||
108 | ||
109 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
110 | ||
111 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
112 | /* | |
113 | * This handle only contains an fsid, zero the rest. | |
114 | */ | |
115 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
116 | hsize = sizeof(xfs_fsid_t); | |
117 | } else { | |
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; | |
9e9a2674 | 121 | handle.ha_fid.fid_gen = inode->i_generation; |
c6143911 | 122 | handle.ha_fid.fid_ino = ip->i_ino; |
3398a400 | 123 | hsize = sizeof(xfs_handle_t); |
1da177e4 LT |
124 | } |
125 | ||
4346cdd4 | 126 | error = -EFAULT; |
743bb465 | 127 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
128 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
129 | goto out_put; | |
1da177e4 | 130 | |
4346cdd4 CH |
131 | error = 0; |
132 | ||
133 | out_put: | |
134 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 135 | fdput(f); |
4346cdd4 CH |
136 | else |
137 | path_put(&path); | |
138 | return error; | |
1da177e4 LT |
139 | } |
140 | ||
1da177e4 | 141 | /* |
d296d30a CH |
142 | * No need to do permission checks on the various pathname components |
143 | * as the handle operations are privileged. | |
1da177e4 LT |
144 | */ |
145 | STATIC int | |
d296d30a CH |
146 | xfs_handle_acceptable( |
147 | void *context, | |
148 | struct dentry *dentry) | |
149 | { | |
150 | return 1; | |
151 | } | |
152 | ||
153 | /* | |
154 | * Convert userspace handle data into a dentry. | |
155 | */ | |
156 | struct dentry * | |
157 | xfs_handle_to_dentry( | |
158 | struct file *parfilp, | |
159 | void __user *uhandle, | |
160 | u32 hlen) | |
1da177e4 | 161 | { |
1da177e4 | 162 | xfs_handle_t handle; |
d296d30a | 163 | struct xfs_fid64 fid; |
1da177e4 LT |
164 | |
165 | /* | |
166 | * Only allow handle opens under a directory. | |
167 | */ | |
496ad9aa | 168 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
169 | return ERR_PTR(-ENOTDIR); |
170 | ||
171 | if (hlen != sizeof(xfs_handle_t)) | |
172 | return ERR_PTR(-EINVAL); | |
173 | if (copy_from_user(&handle, uhandle, hlen)) | |
174 | return ERR_PTR(-EFAULT); | |
175 | if (handle.ha_fid.fid_len != | |
176 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
177 | return ERR_PTR(-EINVAL); | |
178 | ||
179 | memset(&fid, 0, sizeof(struct fid)); | |
180 | fid.ino = handle.ha_fid.fid_ino; | |
181 | fid.gen = handle.ha_fid.fid_gen; | |
182 | ||
183 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
184 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
185 | xfs_handle_acceptable, NULL); | |
186 | } | |
1da177e4 | 187 | |
d296d30a CH |
188 | STATIC struct dentry * |
189 | xfs_handlereq_to_dentry( | |
190 | struct file *parfilp, | |
191 | xfs_fsop_handlereq_t *hreq) | |
192 | { | |
193 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
194 | } |
195 | ||
d5547f9f | 196 | int |
1da177e4 | 197 | xfs_open_by_handle( |
1da177e4 | 198 | struct file *parfilp, |
d296d30a | 199 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 200 | { |
745ca247 | 201 | const struct cred *cred = current_cred(); |
1da177e4 | 202 | int error; |
d296d30a | 203 | int fd; |
1da177e4 LT |
204 | int permflag; |
205 | struct file *filp; | |
206 | struct inode *inode; | |
207 | struct dentry *dentry; | |
1a1d7724 | 208 | fmode_t fmode; |
765927b2 | 209 | struct path path; |
1da177e4 LT |
210 | |
211 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 212 | return -EPERM; |
1da177e4 | 213 | |
d296d30a CH |
214 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
215 | if (IS_ERR(dentry)) | |
216 | return PTR_ERR(dentry); | |
2b0143b5 | 217 | inode = d_inode(dentry); |
1da177e4 LT |
218 | |
219 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
220 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
b474c7ae | 221 | error = -EPERM; |
d296d30a | 222 | goto out_dput; |
1da177e4 LT |
223 | } |
224 | ||
225 | #if BITS_PER_LONG != 32 | |
743bb465 | 226 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 227 | #endif |
d296d30a | 228 | |
743bb465 | 229 | permflag = hreq->oflags; |
1a1d7724 | 230 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 231 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 232 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
b474c7ae | 233 | error = -EPERM; |
d296d30a | 234 | goto out_dput; |
1da177e4 LT |
235 | } |
236 | ||
1a1d7724 | 237 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
337684a1 | 238 | error = -EPERM; |
d296d30a | 239 | goto out_dput; |
1da177e4 LT |
240 | } |
241 | ||
242 | /* Can't write directories. */ | |
1a1d7724 | 243 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
b474c7ae | 244 | error = -EISDIR; |
d296d30a | 245 | goto out_dput; |
1da177e4 LT |
246 | } |
247 | ||
862a6293 | 248 | fd = get_unused_fd_flags(0); |
d296d30a CH |
249 | if (fd < 0) { |
250 | error = fd; | |
251 | goto out_dput; | |
1da177e4 LT |
252 | } |
253 | ||
765927b2 AV |
254 | path.mnt = parfilp->f_path.mnt; |
255 | path.dentry = dentry; | |
256 | filp = dentry_open(&path, hreq->oflags, cred); | |
257 | dput(dentry); | |
1da177e4 | 258 | if (IS_ERR(filp)) { |
d296d30a CH |
259 | put_unused_fd(fd); |
260 | return PTR_ERR(filp); | |
1da177e4 | 261 | } |
4d4be482 | 262 | |
03209378 | 263 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 264 | filp->f_flags |= O_NOATIME; |
4d4be482 | 265 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 266 | } |
1da177e4 | 267 | |
d296d30a CH |
268 | fd_install(fd, filp); |
269 | return fd; | |
270 | ||
271 | out_dput: | |
272 | dput(dentry); | |
273 | return error; | |
1da177e4 LT |
274 | } |
275 | ||
d5547f9f | 276 | int |
1da177e4 | 277 | xfs_readlink_by_handle( |
d296d30a CH |
278 | struct file *parfilp, |
279 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 280 | { |
d296d30a | 281 | struct dentry *dentry; |
1da177e4 | 282 | __u32 olen; |
804c83c3 | 283 | int error; |
1da177e4 LT |
284 | |
285 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 286 | return -EPERM; |
1da177e4 | 287 | |
d296d30a CH |
288 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
289 | if (IS_ERR(dentry)) | |
290 | return PTR_ERR(dentry); | |
1da177e4 LT |
291 | |
292 | /* Restrict this handle operation to symlinks only. */ | |
fd4a0edf | 293 | if (!d_is_symlink(dentry)) { |
b474c7ae | 294 | error = -EINVAL; |
d296d30a | 295 | goto out_dput; |
1da177e4 LT |
296 | } |
297 | ||
743bb465 | 298 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
b474c7ae | 299 | error = -EFAULT; |
d296d30a | 300 | goto out_dput; |
1da177e4 | 301 | } |
1da177e4 | 302 | |
fd4a0edf | 303 | error = vfs_readlink(dentry, hreq->ohandle, olen); |
67fcaa73 | 304 | |
d296d30a CH |
305 | out_dput: |
306 | dput(dentry); | |
804c83c3 | 307 | return error; |
1da177e4 LT |
308 | } |
309 | ||
c24b5dfa DC |
310 | int |
311 | xfs_set_dmattrs( | |
312 | xfs_inode_t *ip, | |
313 | u_int evmask, | |
314 | u_int16_t state) | |
315 | { | |
316 | xfs_mount_t *mp = ip->i_mount; | |
317 | xfs_trans_t *tp; | |
318 | int error; | |
319 | ||
320 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 321 | return -EPERM; |
c24b5dfa DC |
322 | |
323 | if (XFS_FORCED_SHUTDOWN(mp)) | |
2451337d | 324 | return -EIO; |
c24b5dfa | 325 | |
253f4911 CH |
326 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp); |
327 | if (error) | |
c24b5dfa | 328 | return error; |
253f4911 | 329 | |
c24b5dfa DC |
330 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
331 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
332 | ||
333 | ip->i_d.di_dmevmask = evmask; | |
334 | ip->i_d.di_dmstate = state; | |
335 | ||
336 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
70393313 | 337 | error = xfs_trans_commit(tp); |
c24b5dfa DC |
338 | |
339 | return error; | |
340 | } | |
341 | ||
1da177e4 LT |
342 | STATIC int |
343 | xfs_fssetdm_by_handle( | |
d296d30a CH |
344 | struct file *parfilp, |
345 | void __user *arg) | |
1da177e4 LT |
346 | { |
347 | int error; | |
348 | struct fsdmidata fsd; | |
349 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 350 | struct dentry *dentry; |
1da177e4 LT |
351 | |
352 | if (!capable(CAP_MKNOD)) | |
b474c7ae | 353 | return -EPERM; |
1da177e4 | 354 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) |
b474c7ae | 355 | return -EFAULT; |
1da177e4 | 356 | |
d9457dc0 JK |
357 | error = mnt_want_write_file(parfilp); |
358 | if (error) | |
359 | return error; | |
360 | ||
d296d30a | 361 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
362 | if (IS_ERR(dentry)) { |
363 | mnt_drop_write_file(parfilp); | |
d296d30a | 364 | return PTR_ERR(dentry); |
d9457dc0 | 365 | } |
1da177e4 | 366 | |
2b0143b5 | 367 | if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) { |
b474c7ae | 368 | error = -EPERM; |
6e7f75ea | 369 | goto out; |
1da177e4 LT |
370 | } |
371 | ||
372 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
b474c7ae | 373 | error = -EFAULT; |
6e7f75ea | 374 | goto out; |
1da177e4 LT |
375 | } |
376 | ||
2b0143b5 | 377 | error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask, |
6e7f75ea | 378 | fsd.fsd_dmstate); |
1da177e4 | 379 | |
6e7f75ea | 380 | out: |
d9457dc0 | 381 | mnt_drop_write_file(parfilp); |
d296d30a | 382 | dput(dentry); |
6e7f75ea | 383 | return error; |
1da177e4 LT |
384 | } |
385 | ||
386 | STATIC int | |
387 | xfs_attrlist_by_handle( | |
d296d30a CH |
388 | struct file *parfilp, |
389 | void __user *arg) | |
1da177e4 | 390 | { |
d296d30a | 391 | int error = -ENOMEM; |
1da177e4 | 392 | attrlist_cursor_kern_t *cursor; |
0facef7f | 393 | struct xfs_fsop_attrlist_handlereq __user *p = arg; |
1da177e4 | 394 | xfs_fsop_attrlist_handlereq_t al_hreq; |
d296d30a | 395 | struct dentry *dentry; |
1da177e4 LT |
396 | char *kbuf; |
397 | ||
398 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 399 | return -EPERM; |
1da177e4 | 400 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) |
b474c7ae | 401 | return -EFAULT; |
071c529e | 402 | if (al_hreq.buflen < sizeof(struct attrlist) || |
4e247614 | 403 | al_hreq.buflen > XFS_XATTR_LIST_MAX) |
b474c7ae | 404 | return -EINVAL; |
1da177e4 | 405 | |
90ad58a8 CH |
406 | /* |
407 | * Reject flags, only allow namespaces. | |
408 | */ | |
409 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
b474c7ae | 410 | return -EINVAL; |
90ad58a8 | 411 | |
d296d30a CH |
412 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
413 | if (IS_ERR(dentry)) | |
414 | return PTR_ERR(dentry); | |
1da177e4 | 415 | |
fdd3ccee DC |
416 | kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); |
417 | if (!kbuf) | |
418 | goto out_dput; | |
1da177e4 LT |
419 | |
420 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
2b0143b5 | 421 | error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen, |
739bfb2a | 422 | al_hreq.flags, cursor); |
1da177e4 LT |
423 | if (error) |
424 | goto out_kfree; | |
425 | ||
0facef7f DW |
426 | if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) { |
427 | error = -EFAULT; | |
428 | goto out_kfree; | |
429 | } | |
430 | ||
1da177e4 LT |
431 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) |
432 | error = -EFAULT; | |
433 | ||
fdd3ccee DC |
434 | out_kfree: |
435 | kmem_free(kbuf); | |
436 | out_dput: | |
d296d30a CH |
437 | dput(dentry); |
438 | return error; | |
1da177e4 LT |
439 | } |
440 | ||
28750975 | 441 | int |
1da177e4 | 442 | xfs_attrmulti_attr_get( |
739bfb2a | 443 | struct inode *inode, |
a9273ca5 DC |
444 | unsigned char *name, |
445 | unsigned char __user *ubuf, | |
c8ce540d DW |
446 | uint32_t *len, |
447 | uint32_t flags) | |
1da177e4 | 448 | { |
a9273ca5 | 449 | unsigned char *kbuf; |
2451337d | 450 | int error = -EFAULT; |
e8b0ebaa | 451 | |
51fcbfe7 | 452 | if (*len > XFS_XATTR_SIZE_MAX) |
2451337d | 453 | return -EINVAL; |
fdd3ccee DC |
454 | kbuf = kmem_zalloc_large(*len, KM_SLEEP); |
455 | if (!kbuf) | |
2451337d | 456 | return -ENOMEM; |
1da177e4 | 457 | |
e8b0ebaa | 458 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
459 | if (error) |
460 | goto out_kfree; | |
461 | ||
462 | if (copy_to_user(ubuf, kbuf, *len)) | |
2451337d | 463 | error = -EFAULT; |
1da177e4 | 464 | |
fdd3ccee DC |
465 | out_kfree: |
466 | kmem_free(kbuf); | |
1da177e4 LT |
467 | return error; |
468 | } | |
469 | ||
28750975 | 470 | int |
1da177e4 | 471 | xfs_attrmulti_attr_set( |
739bfb2a | 472 | struct inode *inode, |
a9273ca5 DC |
473 | unsigned char *name, |
474 | const unsigned char __user *ubuf, | |
c8ce540d DW |
475 | uint32_t len, |
476 | uint32_t flags) | |
1da177e4 | 477 | { |
a9273ca5 | 478 | unsigned char *kbuf; |
09cb22d2 | 479 | int error; |
1da177e4 | 480 | |
739bfb2a | 481 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 482 | return -EPERM; |
51fcbfe7 | 483 | if (len > XFS_XATTR_SIZE_MAX) |
2451337d | 484 | return -EINVAL; |
1da177e4 | 485 | |
0e639bde LZ |
486 | kbuf = memdup_user(ubuf, len); |
487 | if (IS_ERR(kbuf)) | |
488 | return PTR_ERR(kbuf); | |
e8b0ebaa | 489 | |
09cb22d2 | 490 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
47e1bf64 AG |
491 | if (!error) |
492 | xfs_forget_acl(inode, name, flags); | |
09cb22d2 AG |
493 | kfree(kbuf); |
494 | return error; | |
1da177e4 LT |
495 | } |
496 | ||
28750975 | 497 | int |
1da177e4 | 498 | xfs_attrmulti_attr_remove( |
739bfb2a | 499 | struct inode *inode, |
a9273ca5 | 500 | unsigned char *name, |
c8ce540d | 501 | uint32_t flags) |
1da177e4 | 502 | { |
47e1bf64 AG |
503 | int error; |
504 | ||
739bfb2a | 505 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 506 | return -EPERM; |
47e1bf64 AG |
507 | error = xfs_attr_remove(XFS_I(inode), name, flags); |
508 | if (!error) | |
509 | xfs_forget_acl(inode, name, flags); | |
510 | return error; | |
1da177e4 LT |
511 | } |
512 | ||
513 | STATIC int | |
514 | xfs_attrmulti_by_handle( | |
42a74f20 | 515 | struct file *parfilp, |
d296d30a | 516 | void __user *arg) |
1da177e4 LT |
517 | { |
518 | int error; | |
519 | xfs_attr_multiop_t *ops; | |
520 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 521 | struct dentry *dentry; |
1da177e4 | 522 | unsigned int i, size; |
a9273ca5 | 523 | unsigned char *attr_name; |
1da177e4 LT |
524 | |
525 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 526 | return -EPERM; |
1da177e4 | 527 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
b474c7ae | 528 | return -EFAULT; |
1da177e4 | 529 | |
fda168c2 ZW |
530 | /* overflow check */ |
531 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
532 | return -E2BIG; | |
533 | ||
d296d30a CH |
534 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
535 | if (IS_ERR(dentry)) | |
536 | return PTR_ERR(dentry); | |
1da177e4 | 537 | |
2451337d | 538 | error = -E2BIG; |
e182f57a | 539 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 540 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 541 | goto out_dput; |
1da177e4 | 542 | |
0e639bde LZ |
543 | ops = memdup_user(am_hreq.ops, size); |
544 | if (IS_ERR(ops)) { | |
2451337d | 545 | error = PTR_ERR(ops); |
d296d30a | 546 | goto out_dput; |
0e639bde | 547 | } |
1da177e4 | 548 | |
2451337d | 549 | error = -ENOMEM; |
1da177e4 LT |
550 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
551 | if (!attr_name) | |
552 | goto out_kfree_ops; | |
553 | ||
1da177e4 LT |
554 | error = 0; |
555 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 556 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
557 | ops[i].am_attrname, MAXNAMELEN); |
558 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
2451337d | 559 | error = -ERANGE; |
1da177e4 LT |
560 | if (ops[i].am_error < 0) |
561 | break; | |
562 | ||
563 | switch (ops[i].am_opcode) { | |
564 | case ATTR_OP_GET: | |
d296d30a | 565 | ops[i].am_error = xfs_attrmulti_attr_get( |
2b0143b5 | 566 | d_inode(dentry), attr_name, |
d296d30a CH |
567 | ops[i].am_attrvalue, &ops[i].am_length, |
568 | ops[i].am_flags); | |
1da177e4 LT |
569 | break; |
570 | case ATTR_OP_SET: | |
a561be71 | 571 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
572 | if (ops[i].am_error) |
573 | break; | |
d296d30a | 574 | ops[i].am_error = xfs_attrmulti_attr_set( |
2b0143b5 | 575 | d_inode(dentry), attr_name, |
d296d30a CH |
576 | ops[i].am_attrvalue, ops[i].am_length, |
577 | ops[i].am_flags); | |
2a79f17e | 578 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
579 | break; |
580 | case ATTR_OP_REMOVE: | |
a561be71 | 581 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
582 | if (ops[i].am_error) |
583 | break; | |
d296d30a | 584 | ops[i].am_error = xfs_attrmulti_attr_remove( |
2b0143b5 | 585 | d_inode(dentry), attr_name, |
d296d30a | 586 | ops[i].am_flags); |
2a79f17e | 587 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
588 | break; |
589 | default: | |
2451337d | 590 | ops[i].am_error = -EINVAL; |
1da177e4 LT |
591 | } |
592 | } | |
593 | ||
594 | if (copy_to_user(am_hreq.ops, ops, size)) | |
2451337d | 595 | error = -EFAULT; |
1da177e4 LT |
596 | |
597 | kfree(attr_name); | |
598 | out_kfree_ops: | |
599 | kfree(ops); | |
d296d30a CH |
600 | out_dput: |
601 | dput(dentry); | |
2451337d | 602 | return error; |
1da177e4 LT |
603 | } |
604 | ||
d5547f9f | 605 | int |
1da177e4 | 606 | xfs_ioc_space( |
1da177e4 | 607 | struct file *filp, |
1da177e4 | 608 | unsigned int cmd, |
743bb465 | 609 | xfs_flock64_t *bf) |
1da177e4 | 610 | { |
8f3e2058 CH |
611 | struct inode *inode = file_inode(filp); |
612 | struct xfs_inode *ip = XFS_I(inode); | |
865e9446 | 613 | struct iattr iattr; |
8add71ca | 614 | enum xfs_prealloc_flags flags = 0; |
781355c6 | 615 | uint iolock = XFS_IOLOCK_EXCL; |
1da177e4 LT |
616 | int error; |
617 | ||
743bb465 | 618 | /* |
619 | * Only allow the sys admin to reserve space unless | |
620 | * unwritten extents are enabled. | |
621 | */ | |
622 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
623 | !capable(CAP_SYS_ADMIN)) | |
b474c7ae | 624 | return -EPERM; |
743bb465 | 625 | |
f37ea149 | 626 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
b474c7ae | 627 | return -EPERM; |
1da177e4 | 628 | |
ad4a8ac4 | 629 | if (!(filp->f_mode & FMODE_WRITE)) |
b474c7ae | 630 | return -EBADF; |
1da177e4 | 631 | |
f37ea149 | 632 | if (!S_ISREG(inode->i_mode)) |
b474c7ae | 633 | return -EINVAL; |
1da177e4 | 634 | |
8add71ca CH |
635 | if (filp->f_flags & O_DSYNC) |
636 | flags |= XFS_PREALLOC_SYNC; | |
8f3e2058 | 637 | if (filp->f_mode & FMODE_NOCMTIME) |
8add71ca CH |
638 | flags |= XFS_PREALLOC_INVISIBLE; |
639 | ||
d9457dc0 JK |
640 | error = mnt_want_write_file(filp); |
641 | if (error) | |
642 | return error; | |
865e9446 | 643 | |
781355c6 | 644 | xfs_ilock(ip, iolock); |
65523218 | 645 | error = xfs_break_layouts(inode, &iolock); |
781355c6 CH |
646 | if (error) |
647 | goto out_unlock; | |
865e9446 | 648 | |
e8e9ad42 DC |
649 | xfs_ilock(ip, XFS_MMAPLOCK_EXCL); |
650 | iolock |= XFS_MMAPLOCK_EXCL; | |
651 | ||
865e9446 CH |
652 | switch (bf->l_whence) { |
653 | case 0: /*SEEK_SET*/ | |
654 | break; | |
655 | case 1: /*SEEK_CUR*/ | |
656 | bf->l_start += filp->f_pos; | |
657 | break; | |
658 | case 2: /*SEEK_END*/ | |
659 | bf->l_start += XFS_ISIZE(ip); | |
660 | break; | |
661 | default: | |
2451337d | 662 | error = -EINVAL; |
865e9446 CH |
663 | goto out_unlock; |
664 | } | |
665 | ||
666 | /* | |
667 | * length of <= 0 for resv/unresv/zero is invalid. length for | |
668 | * alloc/free is ignored completely and we have no idea what userspace | |
669 | * might have set it to, so set it to zero to allow range | |
670 | * checks to pass. | |
671 | */ | |
672 | switch (cmd) { | |
673 | case XFS_IOC_ZERO_RANGE: | |
674 | case XFS_IOC_RESVSP: | |
675 | case XFS_IOC_RESVSP64: | |
676 | case XFS_IOC_UNRESVSP: | |
677 | case XFS_IOC_UNRESVSP64: | |
678 | if (bf->l_len <= 0) { | |
2451337d | 679 | error = -EINVAL; |
865e9446 CH |
680 | goto out_unlock; |
681 | } | |
682 | break; | |
683 | default: | |
684 | bf->l_len = 0; | |
685 | break; | |
686 | } | |
687 | ||
688 | if (bf->l_start < 0 || | |
8add71ca | 689 | bf->l_start > inode->i_sb->s_maxbytes || |
865e9446 | 690 | bf->l_start + bf->l_len < 0 || |
8add71ca | 691 | bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) { |
2451337d | 692 | error = -EINVAL; |
865e9446 CH |
693 | goto out_unlock; |
694 | } | |
695 | ||
696 | switch (cmd) { | |
697 | case XFS_IOC_ZERO_RANGE: | |
8add71ca | 698 | flags |= XFS_PREALLOC_SET; |
865e9446 | 699 | error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); |
865e9446 CH |
700 | break; |
701 | case XFS_IOC_RESVSP: | |
702 | case XFS_IOC_RESVSP64: | |
8add71ca | 703 | flags |= XFS_PREALLOC_SET; |
865e9446 CH |
704 | error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, |
705 | XFS_BMAPI_PREALLOC); | |
865e9446 CH |
706 | break; |
707 | case XFS_IOC_UNRESVSP: | |
708 | case XFS_IOC_UNRESVSP64: | |
709 | error = xfs_free_file_space(ip, bf->l_start, bf->l_len); | |
710 | break; | |
711 | case XFS_IOC_ALLOCSP: | |
712 | case XFS_IOC_ALLOCSP64: | |
713 | case XFS_IOC_FREESP: | |
714 | case XFS_IOC_FREESP64: | |
8add71ca | 715 | flags |= XFS_PREALLOC_CLEAR; |
865e9446 CH |
716 | if (bf->l_start > XFS_ISIZE(ip)) { |
717 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), | |
718 | bf->l_start - XFS_ISIZE(ip), 0); | |
719 | if (error) | |
720 | goto out_unlock; | |
721 | } | |
722 | ||
723 | iattr.ia_valid = ATTR_SIZE; | |
724 | iattr.ia_size = bf->l_start; | |
725 | ||
69bca807 | 726 | error = xfs_vn_setattr_size(file_dentry(filp), &iattr); |
865e9446 CH |
727 | break; |
728 | default: | |
729 | ASSERT(0); | |
2451337d | 730 | error = -EINVAL; |
865e9446 CH |
731 | } |
732 | ||
733 | if (error) | |
734 | goto out_unlock; | |
735 | ||
8add71ca | 736 | error = xfs_update_prealloc_flags(ip, flags); |
865e9446 CH |
737 | |
738 | out_unlock: | |
781355c6 | 739 | xfs_iunlock(ip, iolock); |
d9457dc0 | 740 | mnt_drop_write_file(filp); |
2451337d | 741 | return error; |
1da177e4 LT |
742 | } |
743 | ||
744 | STATIC int | |
745 | xfs_ioc_bulkstat( | |
746 | xfs_mount_t *mp, | |
747 | unsigned int cmd, | |
748 | void __user *arg) | |
749 | { | |
750 | xfs_fsop_bulkreq_t bulkreq; | |
751 | int count; /* # of records returned */ | |
752 | xfs_ino_t inlast; /* last inode number */ | |
753 | int done; | |
754 | int error; | |
755 | ||
756 | /* done = 1 if there are more stats to get and if bulkstat */ | |
757 | /* should be called again (unused here, but used in dmapi) */ | |
758 | ||
759 | if (!capable(CAP_SYS_ADMIN)) | |
760 | return -EPERM; | |
761 | ||
762 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 763 | return -EIO; |
1da177e4 LT |
764 | |
765 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
b474c7ae | 766 | return -EFAULT; |
1da177e4 LT |
767 | |
768 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
b474c7ae | 769 | return -EFAULT; |
1da177e4 LT |
770 | |
771 | if ((count = bulkreq.icount) <= 0) | |
b474c7ae | 772 | return -EINVAL; |
1da177e4 | 773 | |
cd57e594 | 774 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 775 | return -EINVAL; |
cd57e594 | 776 | |
1da177e4 LT |
777 | if (cmd == XFS_IOC_FSINUMBERS) |
778 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 779 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 | 780 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
d716f8ee CH |
781 | error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer, |
782 | sizeof(xfs_bstat_t), NULL, &done); | |
cd57e594 | 783 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
784 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
785 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
786 | &done); | |
1da177e4 LT |
787 | |
788 | if (error) | |
2451337d | 789 | return error; |
1da177e4 LT |
790 | |
791 | if (bulkreq.ocount != NULL) { | |
792 | if (copy_to_user(bulkreq.lastip, &inlast, | |
793 | sizeof(xfs_ino_t))) | |
b474c7ae | 794 | return -EFAULT; |
1da177e4 LT |
795 | |
796 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
b474c7ae | 797 | return -EFAULT; |
1da177e4 LT |
798 | } |
799 | ||
800 | return 0; | |
801 | } | |
802 | ||
803 | STATIC int | |
804 | xfs_ioc_fsgeometry_v1( | |
805 | xfs_mount_t *mp, | |
806 | void __user *arg) | |
807 | { | |
eeb2036b | 808 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
809 | int error; |
810 | ||
eeb2036b | 811 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 | 812 | if (error) |
2451337d | 813 | return error; |
1da177e4 | 814 | |
eeb2036b AE |
815 | /* |
816 | * Caller should have passed an argument of type | |
817 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
818 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
819 | */ | |
820 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
b474c7ae | 821 | return -EFAULT; |
1da177e4 LT |
822 | return 0; |
823 | } | |
824 | ||
825 | STATIC int | |
826 | xfs_ioc_fsgeometry( | |
827 | xfs_mount_t *mp, | |
828 | void __user *arg) | |
829 | { | |
830 | xfs_fsop_geom_t fsgeo; | |
831 | int error; | |
832 | ||
833 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
834 | if (error) | |
2451337d | 835 | return error; |
1da177e4 LT |
836 | |
837 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
b474c7ae | 838 | return -EFAULT; |
1da177e4 LT |
839 | return 0; |
840 | } | |
841 | ||
842 | /* | |
843 | * Linux extended inode flags interface. | |
844 | */ | |
1da177e4 LT |
845 | |
846 | STATIC unsigned int | |
847 | xfs_merge_ioc_xflags( | |
848 | unsigned int flags, | |
849 | unsigned int start) | |
850 | { | |
851 | unsigned int xflags = start; | |
852 | ||
39058a0e | 853 | if (flags & FS_IMMUTABLE_FL) |
e7b89481 | 854 | xflags |= FS_XFLAG_IMMUTABLE; |
1da177e4 | 855 | else |
e7b89481 | 856 | xflags &= ~FS_XFLAG_IMMUTABLE; |
39058a0e | 857 | if (flags & FS_APPEND_FL) |
e7b89481 | 858 | xflags |= FS_XFLAG_APPEND; |
1da177e4 | 859 | else |
e7b89481 | 860 | xflags &= ~FS_XFLAG_APPEND; |
39058a0e | 861 | if (flags & FS_SYNC_FL) |
e7b89481 | 862 | xflags |= FS_XFLAG_SYNC; |
1da177e4 | 863 | else |
e7b89481 | 864 | xflags &= ~FS_XFLAG_SYNC; |
39058a0e | 865 | if (flags & FS_NOATIME_FL) |
e7b89481 | 866 | xflags |= FS_XFLAG_NOATIME; |
1da177e4 | 867 | else |
e7b89481 | 868 | xflags &= ~FS_XFLAG_NOATIME; |
39058a0e | 869 | if (flags & FS_NODUMP_FL) |
e7b89481 | 870 | xflags |= FS_XFLAG_NODUMP; |
1da177e4 | 871 | else |
e7b89481 | 872 | xflags &= ~FS_XFLAG_NODUMP; |
1da177e4 LT |
873 | |
874 | return xflags; | |
875 | } | |
876 | ||
877 | STATIC unsigned int | |
878 | xfs_di2lxflags( | |
c8ce540d | 879 | uint16_t di_flags) |
1da177e4 LT |
880 | { |
881 | unsigned int flags = 0; | |
882 | ||
883 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 884 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 885 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 886 | flags |= FS_APPEND_FL; |
1da177e4 | 887 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 888 | flags |= FS_SYNC_FL; |
1da177e4 | 889 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 890 | flags |= FS_NOATIME_FL; |
1da177e4 | 891 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 892 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
893 | return flags; |
894 | } | |
895 | ||
c83bfab1 CH |
896 | STATIC int |
897 | xfs_ioc_fsgetxattr( | |
898 | xfs_inode_t *ip, | |
899 | int attr, | |
900 | void __user *arg) | |
901 | { | |
902 | struct fsxattr fa; | |
903 | ||
a122eb2f DR |
904 | memset(&fa, 0, sizeof(struct fsxattr)); |
905 | ||
c83bfab1 CH |
906 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
907 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
908 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
f7ca3522 DW |
909 | fa.fsx_cowextsize = ip->i_d.di_cowextsize << |
910 | ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 911 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
912 | |
913 | if (attr) { | |
914 | if (ip->i_afp) { | |
915 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
5d829300 | 916 | fa.fsx_nextents = xfs_iext_count(ip->i_afp); |
c83bfab1 CH |
917 | else |
918 | fa.fsx_nextents = ip->i_d.di_anextents; | |
919 | } else | |
920 | fa.fsx_nextents = 0; | |
921 | } else { | |
922 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
5d829300 | 923 | fa.fsx_nextents = xfs_iext_count(&ip->i_df); |
c83bfab1 CH |
924 | else |
925 | fa.fsx_nextents = ip->i_d.di_nextents; | |
926 | } | |
927 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
928 | ||
929 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
930 | return -EFAULT; | |
931 | return 0; | |
932 | } | |
933 | ||
25fe55e8 CH |
934 | STATIC void |
935 | xfs_set_diflags( | |
936 | struct xfs_inode *ip, | |
937 | unsigned int xflags) | |
938 | { | |
939 | unsigned int di_flags; | |
58f88ca2 | 940 | uint64_t di_flags2; |
25fe55e8 CH |
941 | |
942 | /* can't set PREALLOC this way, just preserve it */ | |
943 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
e7b89481 | 944 | if (xflags & FS_XFLAG_IMMUTABLE) |
25fe55e8 | 945 | di_flags |= XFS_DIFLAG_IMMUTABLE; |
e7b89481 | 946 | if (xflags & FS_XFLAG_APPEND) |
25fe55e8 | 947 | di_flags |= XFS_DIFLAG_APPEND; |
e7b89481 | 948 | if (xflags & FS_XFLAG_SYNC) |
25fe55e8 | 949 | di_flags |= XFS_DIFLAG_SYNC; |
e7b89481 | 950 | if (xflags & FS_XFLAG_NOATIME) |
25fe55e8 | 951 | di_flags |= XFS_DIFLAG_NOATIME; |
e7b89481 | 952 | if (xflags & FS_XFLAG_NODUMP) |
25fe55e8 | 953 | di_flags |= XFS_DIFLAG_NODUMP; |
e7b89481 | 954 | if (xflags & FS_XFLAG_NODEFRAG) |
25fe55e8 | 955 | di_flags |= XFS_DIFLAG_NODEFRAG; |
e7b89481 | 956 | if (xflags & FS_XFLAG_FILESTREAM) |
25fe55e8 | 957 | di_flags |= XFS_DIFLAG_FILESTREAM; |
c19b3b05 | 958 | if (S_ISDIR(VFS_I(ip)->i_mode)) { |
e7b89481 | 959 | if (xflags & FS_XFLAG_RTINHERIT) |
25fe55e8 | 960 | di_flags |= XFS_DIFLAG_RTINHERIT; |
e7b89481 | 961 | if (xflags & FS_XFLAG_NOSYMLINKS) |
25fe55e8 | 962 | di_flags |= XFS_DIFLAG_NOSYMLINKS; |
e7b89481 | 963 | if (xflags & FS_XFLAG_EXTSZINHERIT) |
25fe55e8 | 964 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; |
e7b89481 | 965 | if (xflags & FS_XFLAG_PROJINHERIT) |
9336e3a7 | 966 | di_flags |= XFS_DIFLAG_PROJINHERIT; |
c19b3b05 | 967 | } else if (S_ISREG(VFS_I(ip)->i_mode)) { |
e7b89481 | 968 | if (xflags & FS_XFLAG_REALTIME) |
25fe55e8 | 969 | di_flags |= XFS_DIFLAG_REALTIME; |
e7b89481 | 970 | if (xflags & FS_XFLAG_EXTSIZE) |
25fe55e8 CH |
971 | di_flags |= XFS_DIFLAG_EXTSIZE; |
972 | } | |
25fe55e8 | 973 | ip->i_d.di_flags = di_flags; |
58f88ca2 DC |
974 | |
975 | /* diflags2 only valid for v3 inodes. */ | |
976 | if (ip->i_d.di_version < 3) | |
977 | return; | |
978 | ||
f7ca3522 | 979 | di_flags2 = (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK); |
58f88ca2 DC |
980 | if (xflags & FS_XFLAG_DAX) |
981 | di_flags2 |= XFS_DIFLAG2_DAX; | |
f7ca3522 DW |
982 | if (xflags & FS_XFLAG_COWEXTSIZE) |
983 | di_flags2 |= XFS_DIFLAG2_COWEXTSIZE; | |
58f88ca2 DC |
984 | |
985 | ip->i_d.di_flags2 = di_flags2; | |
25fe55e8 CH |
986 | } |
987 | ||
f13fae2d CH |
988 | STATIC void |
989 | xfs_diflags_to_linux( | |
990 | struct xfs_inode *ip) | |
991 | { | |
e4f75291 | 992 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
993 | unsigned int xflags = xfs_ip2xflags(ip); |
994 | ||
e7b89481 | 995 | if (xflags & FS_XFLAG_IMMUTABLE) |
f13fae2d CH |
996 | inode->i_flags |= S_IMMUTABLE; |
997 | else | |
998 | inode->i_flags &= ~S_IMMUTABLE; | |
e7b89481 | 999 | if (xflags & FS_XFLAG_APPEND) |
f13fae2d CH |
1000 | inode->i_flags |= S_APPEND; |
1001 | else | |
1002 | inode->i_flags &= ~S_APPEND; | |
e7b89481 | 1003 | if (xflags & FS_XFLAG_SYNC) |
f13fae2d CH |
1004 | inode->i_flags |= S_SYNC; |
1005 | else | |
1006 | inode->i_flags &= ~S_SYNC; | |
e7b89481 | 1007 | if (xflags & FS_XFLAG_NOATIME) |
f13fae2d CH |
1008 | inode->i_flags |= S_NOATIME; |
1009 | else | |
1010 | inode->i_flags &= ~S_NOATIME; | |
58f88ca2 DC |
1011 | if (xflags & FS_XFLAG_DAX) |
1012 | inode->i_flags |= S_DAX; | |
1013 | else | |
1014 | inode->i_flags &= ~S_DAX; | |
1015 | ||
f13fae2d | 1016 | } |
25fe55e8 | 1017 | |
29a17c00 DC |
1018 | static int |
1019 | xfs_ioctl_setattr_xflags( | |
1020 | struct xfs_trans *tp, | |
1021 | struct xfs_inode *ip, | |
1022 | struct fsxattr *fa) | |
1023 | { | |
1024 | struct xfs_mount *mp = ip->i_mount; | |
1025 | ||
1026 | /* Can't change realtime flag if any extents are allocated. */ | |
1027 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
e7b89481 | 1028 | XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME)) |
29a17c00 DC |
1029 | return -EINVAL; |
1030 | ||
1031 | /* If realtime flag is set then must have realtime device */ | |
e7b89481 | 1032 | if (fa->fsx_xflags & FS_XFLAG_REALTIME) { |
29a17c00 DC |
1033 | if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || |
1034 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) | |
1035 | return -EINVAL; | |
1036 | } | |
1037 | ||
1987fd74 | 1038 | /* Clear reflink if we are actually able to set the rt flag. */ |
c8e156ac | 1039 | if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip)) |
1987fd74 | 1040 | ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK; |
c8e156ac | 1041 | |
4f435ebe DW |
1042 | /* Don't allow us to set DAX mode for a reflinked file for now. */ |
1043 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip)) | |
1044 | return -EINVAL; | |
1045 | ||
29a17c00 DC |
1046 | /* |
1047 | * Can't modify an immutable/append-only file unless | |
1048 | * we have appropriate permission. | |
1049 | */ | |
1050 | if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) || | |
e7b89481 | 1051 | (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) && |
29a17c00 DC |
1052 | !capable(CAP_LINUX_IMMUTABLE)) |
1053 | return -EPERM; | |
1054 | ||
29a17c00 DC |
1055 | xfs_set_diflags(ip, fa->fsx_xflags); |
1056 | xfs_diflags_to_linux(ip); | |
1057 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); | |
1058 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
ff6d6af2 | 1059 | XFS_STATS_INC(mp, xs_ig_attrchg); |
29a17c00 DC |
1060 | return 0; |
1061 | } | |
1062 | ||
3a6a854a DC |
1063 | /* |
1064 | * If we are changing DAX flags, we have to ensure the file is clean and any | |
1065 | * cached objects in the address space are invalidated and removed. This | |
1066 | * requires us to lock out other IO and page faults similar to a truncate | |
1067 | * operation. The locks need to be held until the transaction has been committed | |
1068 | * so that the cache invalidation is atomic with respect to the DAX flag | |
1069 | * manipulation. | |
1070 | */ | |
1071 | static int | |
1072 | xfs_ioctl_setattr_dax_invalidate( | |
1073 | struct xfs_inode *ip, | |
1074 | struct fsxattr *fa, | |
1075 | int *join_flags) | |
1076 | { | |
1077 | struct inode *inode = VFS_I(ip); | |
1078 | int error; | |
1079 | ||
1080 | *join_flags = 0; | |
1081 | ||
e8897529 DC |
1082 | /* |
1083 | * It is only valid to set the DAX flag on regular files and | |
64485437 DC |
1084 | * directories on filesystems where the block size is equal to the page |
1085 | * size. On directories it serves as an inherit hint. | |
e8897529 | 1086 | */ |
64485437 DC |
1087 | if (fa->fsx_xflags & FS_XFLAG_DAX) { |
1088 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) | |
1089 | return -EINVAL; | |
1090 | if (ip->i_mount->m_sb.sb_blocksize != PAGE_SIZE) | |
1091 | return -EINVAL; | |
1092 | } | |
e8897529 | 1093 | |
3a6a854a DC |
1094 | /* If the DAX state is not changing, we have nothing to do here. */ |
1095 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode)) | |
1096 | return 0; | |
1097 | if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode)) | |
1098 | return 0; | |
1099 | ||
1100 | /* lock, flush and invalidate mapping in preparation for flag change */ | |
1101 | xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL); | |
1102 | error = filemap_write_and_wait(inode->i_mapping); | |
1103 | if (error) | |
1104 | goto out_unlock; | |
1105 | error = invalidate_inode_pages2(inode->i_mapping); | |
1106 | if (error) | |
1107 | goto out_unlock; | |
1108 | ||
1109 | *join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL; | |
29a17c00 | 1110 | return 0; |
3a6a854a DC |
1111 | |
1112 | out_unlock: | |
1113 | xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL); | |
1114 | return error; | |
1115 | ||
29a17c00 DC |
1116 | } |
1117 | ||
8f3d17ab DC |
1118 | /* |
1119 | * Set up the transaction structure for the setattr operation, checking that we | |
1120 | * have permission to do so. On success, return a clean transaction and the | |
1121 | * inode locked exclusively ready for further operation specific checks. On | |
1122 | * failure, return an error without modifying or locking the inode. | |
3a6a854a DC |
1123 | * |
1124 | * The inode might already be IO locked on call. If this is the case, it is | |
1125 | * indicated in @join_flags and we take full responsibility for ensuring they | |
1126 | * are unlocked from now on. Hence if we have an error here, we still have to | |
1127 | * unlock them. Otherwise, once they are joined to the transaction, they will | |
1128 | * be unlocked on commit/cancel. | |
8f3d17ab DC |
1129 | */ |
1130 | static struct xfs_trans * | |
1131 | xfs_ioctl_setattr_get_trans( | |
3a6a854a DC |
1132 | struct xfs_inode *ip, |
1133 | int join_flags) | |
8f3d17ab DC |
1134 | { |
1135 | struct xfs_mount *mp = ip->i_mount; | |
1136 | struct xfs_trans *tp; | |
3a6a854a | 1137 | int error = -EROFS; |
8f3d17ab DC |
1138 | |
1139 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
3a6a854a DC |
1140 | goto out_unlock; |
1141 | error = -EIO; | |
8f3d17ab | 1142 | if (XFS_FORCED_SHUTDOWN(mp)) |
3a6a854a | 1143 | goto out_unlock; |
8f3d17ab | 1144 | |
253f4911 | 1145 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp); |
8f3d17ab | 1146 | if (error) |
253f4911 | 1147 | return ERR_PTR(error); |
8f3d17ab DC |
1148 | |
1149 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
3a6a854a DC |
1150 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags); |
1151 | join_flags = 0; | |
8f3d17ab DC |
1152 | |
1153 | /* | |
1154 | * CAP_FOWNER overrides the following restrictions: | |
1155 | * | |
1156 | * The user ID of the calling process must be equal to the file owner | |
1157 | * ID, except in cases where the CAP_FSETID capability is applicable. | |
1158 | */ | |
1159 | if (!inode_owner_or_capable(VFS_I(ip))) { | |
1160 | error = -EPERM; | |
1161 | goto out_cancel; | |
1162 | } | |
1163 | ||
1164 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1165 | xfs_trans_set_sync(tp); | |
1166 | ||
1167 | return tp; | |
1168 | ||
1169 | out_cancel: | |
4906e215 | 1170 | xfs_trans_cancel(tp); |
3a6a854a DC |
1171 | out_unlock: |
1172 | if (join_flags) | |
1173 | xfs_iunlock(ip, join_flags); | |
8f3d17ab DC |
1174 | return ERR_PTR(error); |
1175 | } | |
1176 | ||
9b94fcc3 IP |
1177 | /* |
1178 | * extent size hint validation is somewhat cumbersome. Rules are: | |
1179 | * | |
1180 | * 1. extent size hint is only valid for directories and regular files | |
e7b89481 DC |
1181 | * 2. FS_XFLAG_EXTSIZE is only valid for regular files |
1182 | * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories. | |
9b94fcc3 IP |
1183 | * 4. can only be changed on regular files if no extents are allocated |
1184 | * 5. can be changed on directories at any time | |
1185 | * 6. extsize hint of 0 turns off hints, clears inode flags. | |
1186 | * 7. Extent size must be a multiple of the appropriate block size. | |
1187 | * 8. for non-realtime files, the extent size hint must be limited | |
1188 | * to half the AG size to avoid alignment extending the extent beyond the | |
1189 | * limits of the AG. | |
1190 | */ | |
f92090e9 | 1191 | static int |
d4388d3c DC |
1192 | xfs_ioctl_setattr_check_extsize( |
1193 | struct xfs_inode *ip, | |
1194 | struct fsxattr *fa) | |
1195 | { | |
1196 | struct xfs_mount *mp = ip->i_mount; | |
1197 | ||
c19b3b05 | 1198 | if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode)) |
9b94fcc3 IP |
1199 | return -EINVAL; |
1200 | ||
e7b89481 | 1201 | if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) && |
c19b3b05 | 1202 | !S_ISDIR(VFS_I(ip)->i_mode)) |
9b94fcc3 IP |
1203 | return -EINVAL; |
1204 | ||
c19b3b05 | 1205 | if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents && |
d4388d3c DC |
1206 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize)) |
1207 | return -EINVAL; | |
1208 | ||
d4388d3c DC |
1209 | if (fa->fsx_extsize != 0) { |
1210 | xfs_extlen_t size; | |
1211 | xfs_fsblock_t extsize_fsb; | |
1212 | ||
1213 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1214 | if (extsize_fsb > MAXEXTLEN) | |
1215 | return -EINVAL; | |
1216 | ||
1217 | if (XFS_IS_REALTIME_INODE(ip) || | |
e7b89481 | 1218 | (fa->fsx_xflags & FS_XFLAG_REALTIME)) { |
d4388d3c DC |
1219 | size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog; |
1220 | } else { | |
1221 | size = mp->m_sb.sb_blocksize; | |
1222 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1223 | return -EINVAL; | |
1224 | } | |
1225 | ||
1226 | if (fa->fsx_extsize % size) | |
1227 | return -EINVAL; | |
9b94fcc3 | 1228 | } else |
e7b89481 | 1229 | fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT); |
9b94fcc3 | 1230 | |
d4388d3c DC |
1231 | return 0; |
1232 | } | |
1233 | ||
f7ca3522 DW |
1234 | /* |
1235 | * CoW extent size hint validation rules are: | |
1236 | * | |
1237 | * 1. CoW extent size hint can only be set if reflink is enabled on the fs. | |
1238 | * The inode does not have to have any shared blocks, but it must be a v3. | |
1239 | * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files; | |
1240 | * for a directory, the hint is propagated to new files. | |
1241 | * 3. Can be changed on files & directories at any time. | |
1242 | * 4. CoW extsize hint of 0 turns off hints, clears inode flags. | |
1243 | * 5. Extent size must be a multiple of the appropriate block size. | |
1244 | * 6. The extent size hint must be limited to half the AG size to avoid | |
1245 | * alignment extending the extent beyond the limits of the AG. | |
1246 | */ | |
1247 | static int | |
1248 | xfs_ioctl_setattr_check_cowextsize( | |
1249 | struct xfs_inode *ip, | |
1250 | struct fsxattr *fa) | |
1251 | { | |
1252 | struct xfs_mount *mp = ip->i_mount; | |
1253 | ||
1254 | if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE)) | |
1255 | return 0; | |
1256 | ||
1257 | if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb) || | |
1258 | ip->i_d.di_version != 3) | |
1259 | return -EINVAL; | |
1260 | ||
1261 | if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode)) | |
1262 | return -EINVAL; | |
1263 | ||
1264 | if (fa->fsx_cowextsize != 0) { | |
1265 | xfs_extlen_t size; | |
1266 | xfs_fsblock_t cowextsize_fsb; | |
1267 | ||
1268 | cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize); | |
1269 | if (cowextsize_fsb > MAXEXTLEN) | |
1270 | return -EINVAL; | |
1271 | ||
1272 | size = mp->m_sb.sb_blocksize; | |
1273 | if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1274 | return -EINVAL; | |
1275 | ||
1276 | if (fa->fsx_cowextsize % size) | |
1277 | return -EINVAL; | |
1278 | } else | |
1279 | fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE; | |
1280 | ||
1281 | return 0; | |
1282 | } | |
1283 | ||
f92090e9 | 1284 | static int |
23bd0735 DC |
1285 | xfs_ioctl_setattr_check_projid( |
1286 | struct xfs_inode *ip, | |
1287 | struct fsxattr *fa) | |
1288 | { | |
1289 | /* Disallow 32bit project ids if projid32bit feature is not enabled. */ | |
c8ce540d | 1290 | if (fa->fsx_projid > (uint16_t)-1 && |
23bd0735 DC |
1291 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) |
1292 | return -EINVAL; | |
1293 | ||
1294 | /* | |
1295 | * Project Quota ID state is only allowed to change from within the init | |
1296 | * namespace. Enforce that restriction only if we are trying to change | |
1297 | * the quota ID state. Everything else is allowed in user namespaces. | |
1298 | */ | |
1299 | if (current_user_ns() == &init_user_ns) | |
1300 | return 0; | |
1301 | ||
1302 | if (xfs_get_projid(ip) != fa->fsx_projid) | |
1303 | return -EINVAL; | |
e7b89481 | 1304 | if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) != |
23bd0735 DC |
1305 | (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)) |
1306 | return -EINVAL; | |
1307 | ||
1308 | return 0; | |
1309 | } | |
25fe55e8 CH |
1310 | |
1311 | STATIC int | |
1312 | xfs_ioctl_setattr( | |
1313 | xfs_inode_t *ip, | |
fd179b9c | 1314 | struct fsxattr *fa) |
25fe55e8 CH |
1315 | { |
1316 | struct xfs_mount *mp = ip->i_mount; | |
1317 | struct xfs_trans *tp; | |
7d095257 | 1318 | struct xfs_dquot *udqp = NULL; |
92f8ff73 | 1319 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
1320 | struct xfs_dquot *olddquot = NULL; |
1321 | int code; | |
3a6a854a | 1322 | int join_flags = 0; |
25fe55e8 | 1323 | |
cca28fb8 | 1324 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 | 1325 | |
23bd0735 DC |
1326 | code = xfs_ioctl_setattr_check_projid(ip, fa); |
1327 | if (code) | |
1328 | return code; | |
23963e54 | 1329 | |
25fe55e8 CH |
1330 | /* |
1331 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
1332 | * before we start any other transactions. Trying to do this later | |
1333 | * is messy. We don't care to take a readlock to look at the ids | |
1334 | * in inode here, because we can't hold it across the trans_reserve. | |
1335 | * If the IDs do change before we take the ilock, we're covered | |
1336 | * because the i_*dquot fields will get updated anyway. | |
1337 | */ | |
fd179b9c | 1338 | if (XFS_IS_QUOTA_ON(mp)) { |
7d095257 | 1339 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 | 1340 | ip->i_d.di_gid, fa->fsx_projid, |
92f8ff73 | 1341 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
25fe55e8 CH |
1342 | if (code) |
1343 | return code; | |
1344 | } | |
1345 | ||
3a6a854a DC |
1346 | /* |
1347 | * Changing DAX config may require inode locking for mapping | |
1348 | * invalidation. These need to be held all the way to transaction commit | |
1349 | * or cancel time, so need to be passed through to | |
1350 | * xfs_ioctl_setattr_get_trans() so it can apply them to the join call | |
1351 | * appropriately. | |
1352 | */ | |
1353 | code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags); | |
1354 | if (code) | |
1355 | goto error_free_dquots; | |
1356 | ||
1357 | tp = xfs_ioctl_setattr_get_trans(ip, join_flags); | |
8f3d17ab DC |
1358 | if (IS_ERR(tp)) { |
1359 | code = PTR_ERR(tp); | |
1360 | goto error_free_dquots; | |
25fe55e8 CH |
1361 | } |
1362 | ||
25fe55e8 | 1363 | |
fd179b9c DC |
1364 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && |
1365 | xfs_get_projid(ip) != fa->fsx_projid) { | |
1366 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp, | |
1367 | capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0); | |
1368 | if (code) /* out of quota */ | |
d4388d3c | 1369 | goto error_trans_cancel; |
25fe55e8 CH |
1370 | } |
1371 | ||
d4388d3c DC |
1372 | code = xfs_ioctl_setattr_check_extsize(ip, fa); |
1373 | if (code) | |
1374 | goto error_trans_cancel; | |
25fe55e8 | 1375 | |
f7ca3522 DW |
1376 | code = xfs_ioctl_setattr_check_cowextsize(ip, fa); |
1377 | if (code) | |
1378 | goto error_trans_cancel; | |
1379 | ||
29a17c00 DC |
1380 | code = xfs_ioctl_setattr_xflags(tp, ip, fa); |
1381 | if (code) | |
d4388d3c | 1382 | goto error_trans_cancel; |
25fe55e8 CH |
1383 | |
1384 | /* | |
fd179b9c DC |
1385 | * Change file ownership. Must be the owner or privileged. CAP_FSETID |
1386 | * overrides the following restrictions: | |
1387 | * | |
1388 | * The set-user-ID and set-group-ID bits of a file will be cleared upon | |
1389 | * successful return from chown() | |
25fe55e8 | 1390 | */ |
25fe55e8 | 1391 | |
c19b3b05 | 1392 | if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) && |
fd179b9c | 1393 | !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) |
c19b3b05 | 1394 | VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID); |
25fe55e8 | 1395 | |
fd179b9c DC |
1396 | /* Change the ownerships and register project quota modifications */ |
1397 | if (xfs_get_projid(ip) != fa->fsx_projid) { | |
1398 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { | |
1399 | olddquot = xfs_qm_vop_chown(tp, ip, | |
1400 | &ip->i_pdquot, pdqp); | |
1401 | } | |
1402 | ASSERT(ip->i_d.di_version > 1); | |
1403 | xfs_set_projid(ip, fa->fsx_projid); | |
f13fae2d | 1404 | } |
25fe55e8 | 1405 | |
a872703f DC |
1406 | /* |
1407 | * Only set the extent size hint if we've already determined that the | |
1408 | * extent size hint should be set on the inode. If no extent size flags | |
1409 | * are set on the inode then unconditionally clear the extent size hint. | |
1410 | */ | |
fd179b9c DC |
1411 | if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) |
1412 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
1413 | else | |
1414 | ip->i_d.di_extsize = 0; | |
f7ca3522 DW |
1415 | if (ip->i_d.di_version == 3 && |
1416 | (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE)) | |
1417 | ip->i_d.di_cowextsize = fa->fsx_cowextsize >> | |
1418 | mp->m_sb.sb_blocklog; | |
1419 | else | |
1420 | ip->i_d.di_cowextsize = 0; | |
25fe55e8 | 1421 | |
70393313 | 1422 | code = xfs_trans_commit(tp); |
25fe55e8 CH |
1423 | |
1424 | /* | |
1425 | * Release any dquot(s) the inode had kept before chown. | |
1426 | */ | |
7d095257 CH |
1427 | xfs_qm_dqrele(olddquot); |
1428 | xfs_qm_dqrele(udqp); | |
92f8ff73 | 1429 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1430 | |
288699fe | 1431 | return code; |
25fe55e8 | 1432 | |
d4388d3c | 1433 | error_trans_cancel: |
4906e215 | 1434 | xfs_trans_cancel(tp); |
8f3d17ab | 1435 | error_free_dquots: |
7d095257 | 1436 | xfs_qm_dqrele(udqp); |
92f8ff73 | 1437 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1438 | return code; |
1439 | } | |
1440 | ||
1da177e4 | 1441 | STATIC int |
df26cfe8 | 1442 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1443 | xfs_inode_t *ip, |
1444 | struct file *filp, | |
1da177e4 LT |
1445 | void __user *arg) |
1446 | { | |
1447 | struct fsxattr fa; | |
d9457dc0 | 1448 | int error; |
df26cfe8 LM |
1449 | |
1450 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1451 | return -EFAULT; | |
1da177e4 | 1452 | |
d9457dc0 JK |
1453 | error = mnt_want_write_file(filp); |
1454 | if (error) | |
1455 | return error; | |
fd179b9c | 1456 | error = xfs_ioctl_setattr(ip, &fa); |
d9457dc0 | 1457 | mnt_drop_write_file(filp); |
2451337d | 1458 | return error; |
df26cfe8 | 1459 | } |
1da177e4 | 1460 | |
df26cfe8 LM |
1461 | STATIC int |
1462 | xfs_ioc_getxflags( | |
1463 | xfs_inode_t *ip, | |
1464 | void __user *arg) | |
1465 | { | |
1466 | unsigned int flags; | |
1da177e4 | 1467 | |
df26cfe8 LM |
1468 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1469 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1470 | return -EFAULT; | |
1471 | return 0; | |
1472 | } | |
1da177e4 | 1473 | |
df26cfe8 LM |
1474 | STATIC int |
1475 | xfs_ioc_setxflags( | |
f96291f6 | 1476 | struct xfs_inode *ip, |
df26cfe8 LM |
1477 | struct file *filp, |
1478 | void __user *arg) | |
1479 | { | |
f96291f6 | 1480 | struct xfs_trans *tp; |
25fe55e8 | 1481 | struct fsxattr fa; |
df26cfe8 | 1482 | unsigned int flags; |
3a6a854a | 1483 | int join_flags = 0; |
f96291f6 | 1484 | int error; |
1da177e4 | 1485 | |
df26cfe8 LM |
1486 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1487 | return -EFAULT; | |
1da177e4 | 1488 | |
df26cfe8 LM |
1489 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1490 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1491 | FS_SYNC_FL)) | |
1492 | return -EOPNOTSUPP; | |
1da177e4 | 1493 | |
25fe55e8 | 1494 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); |
1da177e4 | 1495 | |
d9457dc0 JK |
1496 | error = mnt_want_write_file(filp); |
1497 | if (error) | |
1498 | return error; | |
f96291f6 | 1499 | |
3a6a854a DC |
1500 | /* |
1501 | * Changing DAX config may require inode locking for mapping | |
1502 | * invalidation. These need to be held all the way to transaction commit | |
1503 | * or cancel time, so need to be passed through to | |
1504 | * xfs_ioctl_setattr_get_trans() so it can apply them to the join call | |
1505 | * appropriately. | |
1506 | */ | |
1507 | error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags); | |
1508 | if (error) | |
1509 | goto out_drop_write; | |
1510 | ||
1511 | tp = xfs_ioctl_setattr_get_trans(ip, join_flags); | |
f96291f6 DC |
1512 | if (IS_ERR(tp)) { |
1513 | error = PTR_ERR(tp); | |
1514 | goto out_drop_write; | |
1515 | } | |
1516 | ||
1517 | error = xfs_ioctl_setattr_xflags(tp, ip, &fa); | |
1518 | if (error) { | |
4906e215 | 1519 | xfs_trans_cancel(tp); |
f96291f6 DC |
1520 | goto out_drop_write; |
1521 | } | |
1522 | ||
70393313 | 1523 | error = xfs_trans_commit(tp); |
f96291f6 | 1524 | out_drop_write: |
d9457dc0 | 1525 | mnt_drop_write_file(filp); |
2451337d | 1526 | return error; |
1da177e4 LT |
1527 | } |
1528 | ||
8a7141a8 | 1529 | STATIC int |
1dbba086 | 1530 | xfs_getbmap_format(void **ap, struct getbmapx *bmv) |
8a7141a8 | 1531 | { |
b972d079 | 1532 | struct getbmap __user *base = (struct getbmap __user *)*ap; |
8a7141a8 ES |
1533 | |
1534 | /* copy only getbmap portion (not getbmapx) */ | |
1535 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
2451337d | 1536 | return -EFAULT; |
8a7141a8 ES |
1537 | |
1538 | *ap += sizeof(struct getbmap); | |
1539 | return 0; | |
1540 | } | |
1541 | ||
1da177e4 LT |
1542 | STATIC int |
1543 | xfs_ioc_getbmap( | |
8f3e2058 | 1544 | struct file *file, |
1da177e4 LT |
1545 | unsigned int cmd, |
1546 | void __user *arg) | |
1547 | { | |
be6324c0 | 1548 | struct getbmapx bmx = { 0 }; |
1da177e4 LT |
1549 | int error; |
1550 | ||
be6324c0 DW |
1551 | /* struct getbmap is a strict subset of struct getbmapx. */ |
1552 | if (copy_from_user(&bmx, arg, offsetof(struct getbmapx, bmv_iflags))) | |
b474c7ae | 1553 | return -EFAULT; |
1da177e4 | 1554 | |
8a7141a8 | 1555 | if (bmx.bmv_count < 2) |
b474c7ae | 1556 | return -EINVAL; |
1da177e4 | 1557 | |
8a7141a8 | 1558 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
8f3e2058 | 1559 | if (file->f_mode & FMODE_NOCMTIME) |
8a7141a8 | 1560 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1561 | |
8f3e2058 | 1562 | error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format, |
b972d079 | 1563 | (__force struct getbmap *)arg+1); |
1da177e4 | 1564 | if (error) |
2451337d | 1565 | return error; |
1da177e4 | 1566 | |
8a7141a8 ES |
1567 | /* copy back header - only size of getbmap */ |
1568 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
b474c7ae | 1569 | return -EFAULT; |
1da177e4 LT |
1570 | return 0; |
1571 | } | |
1572 | ||
8a7141a8 | 1573 | STATIC int |
1dbba086 | 1574 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv) |
8a7141a8 | 1575 | { |
b972d079 | 1576 | struct getbmapx __user *base = (struct getbmapx __user *)*ap; |
8a7141a8 ES |
1577 | |
1578 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
2451337d | 1579 | return -EFAULT; |
8a7141a8 ES |
1580 | |
1581 | *ap += sizeof(struct getbmapx); | |
1582 | return 0; | |
1583 | } | |
1584 | ||
1da177e4 LT |
1585 | STATIC int |
1586 | xfs_ioc_getbmapx( | |
993386c1 | 1587 | struct xfs_inode *ip, |
1da177e4 LT |
1588 | void __user *arg) |
1589 | { | |
1590 | struct getbmapx bmx; | |
1da177e4 LT |
1591 | int error; |
1592 | ||
1593 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
b474c7ae | 1594 | return -EFAULT; |
1da177e4 LT |
1595 | |
1596 | if (bmx.bmv_count < 2) | |
b474c7ae | 1597 | return -EINVAL; |
1da177e4 | 1598 | |
8a7141a8 | 1599 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
b474c7ae | 1600 | return -EINVAL; |
1da177e4 | 1601 | |
8a7141a8 | 1602 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
b972d079 | 1603 | (__force struct getbmapx *)arg+1); |
1da177e4 | 1604 | if (error) |
2451337d | 1605 | return error; |
1da177e4 | 1606 | |
8a7141a8 ES |
1607 | /* copy back header */ |
1608 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
b474c7ae | 1609 | return -EFAULT; |
1da177e4 LT |
1610 | |
1611 | return 0; | |
1612 | } | |
df26cfe8 | 1613 | |
e89c0413 DW |
1614 | struct getfsmap_info { |
1615 | struct xfs_mount *mp; | |
9d17e14c CH |
1616 | struct fsmap_head __user *data; |
1617 | unsigned int idx; | |
e89c0413 DW |
1618 | __u32 last_flags; |
1619 | }; | |
1620 | ||
1621 | STATIC int | |
1622 | xfs_getfsmap_format(struct xfs_fsmap *xfm, void *priv) | |
1623 | { | |
1624 | struct getfsmap_info *info = priv; | |
1625 | struct fsmap fm; | |
1626 | ||
1627 | trace_xfs_getfsmap_mapping(info->mp, xfm); | |
1628 | ||
1629 | info->last_flags = xfm->fmr_flags; | |
1630 | xfs_fsmap_from_internal(&fm, xfm); | |
9d17e14c CH |
1631 | if (copy_to_user(&info->data->fmh_recs[info->idx++], &fm, |
1632 | sizeof(struct fsmap))) | |
e89c0413 DW |
1633 | return -EFAULT; |
1634 | ||
e89c0413 DW |
1635 | return 0; |
1636 | } | |
1637 | ||
1638 | STATIC int | |
1639 | xfs_ioc_getfsmap( | |
1640 | struct xfs_inode *ip, | |
9d17e14c | 1641 | struct fsmap_head __user *arg) |
e89c0413 | 1642 | { |
ef2b67ec | 1643 | struct getfsmap_info info = { NULL }; |
e89c0413 DW |
1644 | struct xfs_fsmap_head xhead = {0}; |
1645 | struct fsmap_head head; | |
1646 | bool aborted = false; | |
1647 | int error; | |
1648 | ||
1649 | if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) | |
1650 | return -EFAULT; | |
1651 | if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || | |
1652 | memchr_inv(head.fmh_keys[0].fmr_reserved, 0, | |
1653 | sizeof(head.fmh_keys[0].fmr_reserved)) || | |
1654 | memchr_inv(head.fmh_keys[1].fmr_reserved, 0, | |
1655 | sizeof(head.fmh_keys[1].fmr_reserved))) | |
1656 | return -EINVAL; | |
1657 | ||
1658 | xhead.fmh_iflags = head.fmh_iflags; | |
1659 | xhead.fmh_count = head.fmh_count; | |
1660 | xfs_fsmap_to_internal(&xhead.fmh_keys[0], &head.fmh_keys[0]); | |
1661 | xfs_fsmap_to_internal(&xhead.fmh_keys[1], &head.fmh_keys[1]); | |
1662 | ||
1663 | trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]); | |
1664 | trace_xfs_getfsmap_high_key(ip->i_mount, &xhead.fmh_keys[1]); | |
1665 | ||
1666 | info.mp = ip->i_mount; | |
9d17e14c | 1667 | info.data = arg; |
e89c0413 DW |
1668 | error = xfs_getfsmap(ip->i_mount, &xhead, xfs_getfsmap_format, &info); |
1669 | if (error == XFS_BTREE_QUERY_RANGE_ABORT) { | |
1670 | error = 0; | |
1671 | aborted = true; | |
1672 | } else if (error) | |
1673 | return error; | |
1674 | ||
1675 | /* If we didn't abort, set the "last" flag in the last fmx */ | |
12e4a381 | 1676 | if (!aborted && info.idx) { |
e89c0413 | 1677 | info.last_flags |= FMR_OF_LAST; |
9d17e14c CH |
1678 | if (copy_to_user(&info.data->fmh_recs[info.idx - 1].fmr_flags, |
1679 | &info.last_flags, sizeof(info.last_flags))) | |
e89c0413 DW |
1680 | return -EFAULT; |
1681 | } | |
1682 | ||
1683 | /* copy back header */ | |
1684 | head.fmh_entries = xhead.fmh_entries; | |
1685 | head.fmh_oflags = xhead.fmh_oflags; | |
1686 | if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) | |
1687 | return -EFAULT; | |
1688 | ||
1689 | return 0; | |
1690 | } | |
1691 | ||
a133d952 DC |
1692 | int |
1693 | xfs_ioc_swapext( | |
1694 | xfs_swapext_t *sxp) | |
1695 | { | |
1696 | xfs_inode_t *ip, *tip; | |
1697 | struct fd f, tmp; | |
1698 | int error = 0; | |
1699 | ||
1700 | /* Pull information for the target fd */ | |
1701 | f = fdget((int)sxp->sx_fdtarget); | |
1702 | if (!f.file) { | |
2451337d | 1703 | error = -EINVAL; |
a133d952 DC |
1704 | goto out; |
1705 | } | |
1706 | ||
1707 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1708 | !(f.file->f_mode & FMODE_READ) || | |
1709 | (f.file->f_flags & O_APPEND)) { | |
2451337d | 1710 | error = -EBADF; |
a133d952 DC |
1711 | goto out_put_file; |
1712 | } | |
1713 | ||
1714 | tmp = fdget((int)sxp->sx_fdtmp); | |
1715 | if (!tmp.file) { | |
2451337d | 1716 | error = -EINVAL; |
a133d952 DC |
1717 | goto out_put_file; |
1718 | } | |
1719 | ||
1720 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1721 | !(tmp.file->f_mode & FMODE_READ) || | |
1722 | (tmp.file->f_flags & O_APPEND)) { | |
2451337d | 1723 | error = -EBADF; |
a133d952 DC |
1724 | goto out_put_tmp_file; |
1725 | } | |
1726 | ||
1727 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1728 | IS_SWAPFILE(file_inode(tmp.file))) { | |
2451337d | 1729 | error = -EINVAL; |
a133d952 DC |
1730 | goto out_put_tmp_file; |
1731 | } | |
1732 | ||
7f1b6245 JH |
1733 | /* |
1734 | * We need to ensure that the fds passed in point to XFS inodes | |
1735 | * before we cast and access them as XFS structures as we have no | |
1736 | * control over what the user passes us here. | |
1737 | */ | |
1738 | if (f.file->f_op != &xfs_file_operations || | |
1739 | tmp.file->f_op != &xfs_file_operations) { | |
1740 | error = -EINVAL; | |
1741 | goto out_put_tmp_file; | |
1742 | } | |
1743 | ||
a133d952 DC |
1744 | ip = XFS_I(file_inode(f.file)); |
1745 | tip = XFS_I(file_inode(tmp.file)); | |
1746 | ||
1747 | if (ip->i_mount != tip->i_mount) { | |
2451337d | 1748 | error = -EINVAL; |
a133d952 DC |
1749 | goto out_put_tmp_file; |
1750 | } | |
1751 | ||
1752 | if (ip->i_ino == tip->i_ino) { | |
2451337d | 1753 | error = -EINVAL; |
a133d952 DC |
1754 | goto out_put_tmp_file; |
1755 | } | |
1756 | ||
1757 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
2451337d | 1758 | error = -EIO; |
a133d952 DC |
1759 | goto out_put_tmp_file; |
1760 | } | |
1761 | ||
1762 | error = xfs_swap_extents(ip, tip, sxp); | |
1763 | ||
1764 | out_put_tmp_file: | |
1765 | fdput(tmp); | |
1766 | out_put_file: | |
1767 | fdput(f); | |
1768 | out: | |
1769 | return error; | |
1770 | } | |
1771 | ||
4d4be482 CH |
1772 | /* |
1773 | * Note: some of the ioctl's return positive numbers as a | |
1774 | * byte count indicating success, such as readlink_by_handle. | |
1775 | * So we don't "sign flip" like most other routines. This means | |
1776 | * true errors need to be returned as a negative value. | |
1777 | */ | |
1778 | long | |
1779 | xfs_file_ioctl( | |
df26cfe8 | 1780 | struct file *filp, |
df26cfe8 | 1781 | unsigned int cmd, |
4d4be482 | 1782 | unsigned long p) |
df26cfe8 | 1783 | { |
496ad9aa | 1784 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1785 | struct xfs_inode *ip = XFS_I(inode); |
1786 | struct xfs_mount *mp = ip->i_mount; | |
1787 | void __user *arg = (void __user *)p; | |
df26cfe8 LM |
1788 | int error; |
1789 | ||
cca28fb8 | 1790 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1791 | |
1792 | switch (cmd) { | |
a46db608 CH |
1793 | case FITRIM: |
1794 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1795 | case XFS_IOC_ALLOCSP: |
1796 | case XFS_IOC_FREESP: | |
1797 | case XFS_IOC_RESVSP: | |
1798 | case XFS_IOC_UNRESVSP: | |
1799 | case XFS_IOC_ALLOCSP64: | |
1800 | case XFS_IOC_FREESP64: | |
1801 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1802 | case XFS_IOC_UNRESVSP64: |
1803 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1804 | xfs_flock64_t bf; |
df26cfe8 | 1805 | |
743bb465 | 1806 | if (copy_from_user(&bf, arg, sizeof(bf))) |
b474c7ae | 1807 | return -EFAULT; |
8f3e2058 | 1808 | return xfs_ioc_space(filp, cmd, &bf); |
743bb465 | 1809 | } |
df26cfe8 LM |
1810 | case XFS_IOC_DIOINFO: { |
1811 | struct dioattr da; | |
1812 | xfs_buftarg_t *target = | |
1813 | XFS_IS_REALTIME_INODE(ip) ? | |
1814 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1815 | ||
7c71ee78 | 1816 | da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; |
df26cfe8 LM |
1817 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1818 | ||
1819 | if (copy_to_user(arg, &da, sizeof(da))) | |
b474c7ae | 1820 | return -EFAULT; |
df26cfe8 LM |
1821 | return 0; |
1822 | } | |
1823 | ||
1824 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1825 | case XFS_IOC_FSBULKSTAT: | |
1826 | case XFS_IOC_FSINUMBERS: | |
1827 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1828 | ||
1829 | case XFS_IOC_FSGEOMETRY_V1: | |
1830 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1831 | ||
1832 | case XFS_IOC_FSGEOMETRY: | |
1833 | return xfs_ioc_fsgeometry(mp, arg); | |
1834 | ||
1835 | case XFS_IOC_GETVERSION: | |
1836 | return put_user(inode->i_generation, (int __user *)arg); | |
1837 | ||
1838 | case XFS_IOC_FSGETXATTR: | |
1839 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1840 | case XFS_IOC_FSGETXATTRA: | |
1841 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1842 | case XFS_IOC_FSSETXATTR: |
1843 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1844 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1845 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1846 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1847 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1848 | |
1849 | case XFS_IOC_FSSETDM: { | |
1850 | struct fsdmidata dmi; | |
1851 | ||
1852 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
b474c7ae | 1853 | return -EFAULT; |
df26cfe8 | 1854 | |
d9457dc0 JK |
1855 | error = mnt_want_write_file(filp); |
1856 | if (error) | |
1857 | return error; | |
1858 | ||
df26cfe8 LM |
1859 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1860 | dmi.fsd_dmstate); | |
d9457dc0 | 1861 | mnt_drop_write_file(filp); |
2451337d | 1862 | return error; |
df26cfe8 LM |
1863 | } |
1864 | ||
1865 | case XFS_IOC_GETBMAP: | |
1866 | case XFS_IOC_GETBMAPA: | |
8f3e2058 | 1867 | return xfs_ioc_getbmap(filp, cmd, arg); |
df26cfe8 LM |
1868 | |
1869 | case XFS_IOC_GETBMAPX: | |
1870 | return xfs_ioc_getbmapx(ip, arg); | |
1871 | ||
e89c0413 DW |
1872 | case FS_IOC_GETFSMAP: |
1873 | return xfs_ioc_getfsmap(ip, arg); | |
1874 | ||
df26cfe8 LM |
1875 | case XFS_IOC_FD_TO_HANDLE: |
1876 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1877 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1878 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1879 | |
743bb465 | 1880 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
b474c7ae | 1881 | return -EFAULT; |
743bb465 | 1882 | return xfs_find_handle(cmd, &hreq); |
1883 | } | |
1884 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1885 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1886 | |
743bb465 | 1887 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1888 | return -EFAULT; |
d296d30a | 1889 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1890 | } |
df26cfe8 | 1891 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1892 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1893 | |
743bb465 | 1894 | case XFS_IOC_READLINK_BY_HANDLE: { |
1895 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1896 | |
743bb465 | 1897 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1898 | return -EFAULT; |
d296d30a | 1899 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1900 | } |
df26cfe8 | 1901 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1902 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1903 | |
1904 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1905 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1906 | |
1907 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1908 | struct xfs_swapext sxp; |
1909 | ||
1910 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
b474c7ae | 1911 | return -EFAULT; |
d9457dc0 JK |
1912 | error = mnt_want_write_file(filp); |
1913 | if (error) | |
1914 | return error; | |
a133d952 | 1915 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 1916 | mnt_drop_write_file(filp); |
2451337d | 1917 | return error; |
df26cfe8 LM |
1918 | } |
1919 | ||
1920 | case XFS_IOC_FSCOUNTS: { | |
1921 | xfs_fsop_counts_t out; | |
1922 | ||
1923 | error = xfs_fs_counts(mp, &out); | |
1924 | if (error) | |
2451337d | 1925 | return error; |
df26cfe8 LM |
1926 | |
1927 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1928 | return -EFAULT; |
df26cfe8 LM |
1929 | return 0; |
1930 | } | |
1931 | ||
1932 | case XFS_IOC_SET_RESBLKS: { | |
1933 | xfs_fsop_resblks_t inout; | |
c8ce540d | 1934 | uint64_t in; |
df26cfe8 LM |
1935 | |
1936 | if (!capable(CAP_SYS_ADMIN)) | |
1937 | return -EPERM; | |
1938 | ||
d5db0f97 | 1939 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
b474c7ae | 1940 | return -EROFS; |
d5db0f97 | 1941 | |
df26cfe8 | 1942 | if (copy_from_user(&inout, arg, sizeof(inout))) |
b474c7ae | 1943 | return -EFAULT; |
df26cfe8 | 1944 | |
d9457dc0 JK |
1945 | error = mnt_want_write_file(filp); |
1946 | if (error) | |
1947 | return error; | |
1948 | ||
df26cfe8 LM |
1949 | /* input parameter is passed in resblks field of structure */ |
1950 | in = inout.resblks; | |
1951 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1952 | mnt_drop_write_file(filp); |
df26cfe8 | 1953 | if (error) |
2451337d | 1954 | return error; |
df26cfe8 LM |
1955 | |
1956 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
b474c7ae | 1957 | return -EFAULT; |
df26cfe8 LM |
1958 | return 0; |
1959 | } | |
1960 | ||
1961 | case XFS_IOC_GET_RESBLKS: { | |
1962 | xfs_fsop_resblks_t out; | |
1963 | ||
1964 | if (!capable(CAP_SYS_ADMIN)) | |
1965 | return -EPERM; | |
1966 | ||
1967 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1968 | if (error) | |
2451337d | 1969 | return error; |
df26cfe8 LM |
1970 | |
1971 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1972 | return -EFAULT; |
df26cfe8 LM |
1973 | |
1974 | return 0; | |
1975 | } | |
1976 | ||
1977 | case XFS_IOC_FSGROWFSDATA: { | |
1978 | xfs_growfs_data_t in; | |
1979 | ||
df26cfe8 | 1980 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1981 | return -EFAULT; |
df26cfe8 | 1982 | |
d9457dc0 JK |
1983 | error = mnt_want_write_file(filp); |
1984 | if (error) | |
1985 | return error; | |
df26cfe8 | 1986 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1987 | mnt_drop_write_file(filp); |
2451337d | 1988 | return error; |
df26cfe8 LM |
1989 | } |
1990 | ||
1991 | case XFS_IOC_FSGROWFSLOG: { | |
1992 | xfs_growfs_log_t in; | |
1993 | ||
df26cfe8 | 1994 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1995 | return -EFAULT; |
df26cfe8 | 1996 | |
d9457dc0 JK |
1997 | error = mnt_want_write_file(filp); |
1998 | if (error) | |
1999 | return error; | |
df26cfe8 | 2000 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 2001 | mnt_drop_write_file(filp); |
2451337d | 2002 | return error; |
df26cfe8 LM |
2003 | } |
2004 | ||
2005 | case XFS_IOC_FSGROWFSRT: { | |
2006 | xfs_growfs_rt_t in; | |
2007 | ||
df26cfe8 | 2008 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2009 | return -EFAULT; |
df26cfe8 | 2010 | |
d9457dc0 JK |
2011 | error = mnt_want_write_file(filp); |
2012 | if (error) | |
2013 | return error; | |
df26cfe8 | 2014 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 2015 | mnt_drop_write_file(filp); |
2451337d | 2016 | return error; |
df26cfe8 LM |
2017 | } |
2018 | ||
df26cfe8 | 2019 | case XFS_IOC_GOINGDOWN: { |
c8ce540d | 2020 | uint32_t in; |
df26cfe8 LM |
2021 | |
2022 | if (!capable(CAP_SYS_ADMIN)) | |
2023 | return -EPERM; | |
2024 | ||
c8ce540d | 2025 | if (get_user(in, (uint32_t __user *)arg)) |
b474c7ae | 2026 | return -EFAULT; |
df26cfe8 | 2027 | |
2451337d | 2028 | return xfs_fs_goingdown(mp, in); |
df26cfe8 LM |
2029 | } |
2030 | ||
2031 | case XFS_IOC_ERROR_INJECTION: { | |
2032 | xfs_error_injection_t in; | |
2033 | ||
2034 | if (!capable(CAP_SYS_ADMIN)) | |
2035 | return -EPERM; | |
2036 | ||
2037 | if (copy_from_user(&in, arg, sizeof(in))) | |
b474c7ae | 2038 | return -EFAULT; |
df26cfe8 | 2039 | |
31965ef3 | 2040 | return xfs_errortag_add(mp, in.errtag); |
df26cfe8 LM |
2041 | } |
2042 | ||
2043 | case XFS_IOC_ERROR_CLEARALL: | |
2044 | if (!capable(CAP_SYS_ADMIN)) | |
2045 | return -EPERM; | |
2046 | ||
31965ef3 | 2047 | return xfs_errortag_clearall(mp); |
df26cfe8 | 2048 | |
8ca149de | 2049 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
2050 | struct xfs_fs_eofblocks eofb; |
2051 | struct xfs_eofblocks keofb; | |
8ca149de | 2052 | |
8c567a7f DE |
2053 | if (!capable(CAP_SYS_ADMIN)) |
2054 | return -EPERM; | |
2055 | ||
2056 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 2057 | return -EROFS; |
8c567a7f | 2058 | |
8ca149de | 2059 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
b474c7ae | 2060 | return -EFAULT; |
8ca149de | 2061 | |
b9fe5052 DE |
2062 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
2063 | if (error) | |
2451337d | 2064 | return error; |
8ca149de | 2065 | |
2451337d | 2066 | return xfs_icache_free_eofblocks(mp, &keofb); |
8ca149de BF |
2067 | } |
2068 | ||
df26cfe8 LM |
2069 | default: |
2070 | return -ENOTTY; | |
2071 | } | |
2072 | } |