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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" |
1da177e4 | 44 | |
16f7e0fe | 45 | #include <linux/capability.h> |
5b825c3a | 46 | #include <linux/cred.h> |
1da177e4 LT |
47 | #include <linux/dcache.h> |
48 | #include <linux/mount.h> | |
49 | #include <linux/namei.h> | |
50 | #include <linux/pagemap.h> | |
5a0e3ad6 | 51 | #include <linux/slab.h> |
d296d30a | 52 | #include <linux/exportfs.h> |
1da177e4 LT |
53 | |
54 | /* | |
55 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
56 | * a file or fs handle. | |
57 | * | |
58 | * XFS_IOC_PATH_TO_FSHANDLE | |
59 | * returns fs handle for a mount point or path within that mount point | |
60 | * XFS_IOC_FD_TO_HANDLE | |
61 | * returns full handle for a FD opened in user space | |
62 | * XFS_IOC_PATH_TO_HANDLE | |
63 | * returns full handle for a path | |
64 | */ | |
d5547f9f | 65 | int |
1da177e4 LT |
66 | xfs_find_handle( |
67 | unsigned int cmd, | |
743bb465 | 68 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
69 | { |
70 | int hsize; | |
71 | xfs_handle_t handle; | |
1da177e4 | 72 | struct inode *inode; |
a30b0367 | 73 | struct fd f = {NULL}; |
4346cdd4 | 74 | struct path path; |
2903ff01 | 75 | int error; |
4346cdd4 | 76 | struct xfs_inode *ip; |
1da177e4 | 77 | |
4346cdd4 | 78 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
79 | f = fdget(hreq->fd); |
80 | if (!f.file) | |
4346cdd4 | 81 | return -EBADF; |
496ad9aa | 82 | inode = file_inode(f.file); |
4346cdd4 CH |
83 | } else { |
84 | error = user_lpath((const char __user *)hreq->path, &path); | |
85 | if (error) | |
86 | return error; | |
2b0143b5 | 87 | inode = d_inode(path.dentry); |
1da177e4 | 88 | } |
4346cdd4 CH |
89 | ip = XFS_I(inode); |
90 | ||
91 | /* | |
92 | * We can only generate handles for inodes residing on a XFS filesystem, | |
93 | * and only for regular files, directories or symbolic links. | |
94 | */ | |
95 | error = -EINVAL; | |
96 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
97 | goto out_put; | |
98 | ||
99 | error = -EBADF; | |
100 | if (!S_ISREG(inode->i_mode) && | |
101 | !S_ISDIR(inode->i_mode) && | |
102 | !S_ISLNK(inode->i_mode)) | |
103 | goto out_put; | |
104 | ||
105 | ||
106 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
107 | ||
108 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
109 | /* | |
110 | * This handle only contains an fsid, zero the rest. | |
111 | */ | |
112 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
113 | hsize = sizeof(xfs_fsid_t); | |
114 | } else { | |
c6143911 CH |
115 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
116 | sizeof(handle.ha_fid.fid_len); | |
117 | handle.ha_fid.fid_pad = 0; | |
9e9a2674 | 118 | handle.ha_fid.fid_gen = inode->i_generation; |
c6143911 | 119 | handle.ha_fid.fid_ino = ip->i_ino; |
1da177e4 LT |
120 | |
121 | hsize = XFS_HSIZE(handle); | |
122 | } | |
123 | ||
4346cdd4 | 124 | error = -EFAULT; |
743bb465 | 125 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
126 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
127 | goto out_put; | |
1da177e4 | 128 | |
4346cdd4 CH |
129 | error = 0; |
130 | ||
131 | out_put: | |
132 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 133 | fdput(f); |
4346cdd4 CH |
134 | else |
135 | path_put(&path); | |
136 | return error; | |
1da177e4 LT |
137 | } |
138 | ||
1da177e4 | 139 | /* |
d296d30a CH |
140 | * No need to do permission checks on the various pathname components |
141 | * as the handle operations are privileged. | |
1da177e4 LT |
142 | */ |
143 | STATIC int | |
d296d30a CH |
144 | xfs_handle_acceptable( |
145 | void *context, | |
146 | struct dentry *dentry) | |
147 | { | |
148 | return 1; | |
149 | } | |
150 | ||
151 | /* | |
152 | * Convert userspace handle data into a dentry. | |
153 | */ | |
154 | struct dentry * | |
155 | xfs_handle_to_dentry( | |
156 | struct file *parfilp, | |
157 | void __user *uhandle, | |
158 | u32 hlen) | |
1da177e4 | 159 | { |
1da177e4 | 160 | xfs_handle_t handle; |
d296d30a | 161 | struct xfs_fid64 fid; |
1da177e4 LT |
162 | |
163 | /* | |
164 | * Only allow handle opens under a directory. | |
165 | */ | |
496ad9aa | 166 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
167 | return ERR_PTR(-ENOTDIR); |
168 | ||
169 | if (hlen != sizeof(xfs_handle_t)) | |
170 | return ERR_PTR(-EINVAL); | |
171 | if (copy_from_user(&handle, uhandle, hlen)) | |
172 | return ERR_PTR(-EFAULT); | |
173 | if (handle.ha_fid.fid_len != | |
174 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
175 | return ERR_PTR(-EINVAL); | |
176 | ||
177 | memset(&fid, 0, sizeof(struct fid)); | |
178 | fid.ino = handle.ha_fid.fid_ino; | |
179 | fid.gen = handle.ha_fid.fid_gen; | |
180 | ||
181 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
182 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
183 | xfs_handle_acceptable, NULL); | |
184 | } | |
1da177e4 | 185 | |
d296d30a CH |
186 | STATIC struct dentry * |
187 | xfs_handlereq_to_dentry( | |
188 | struct file *parfilp, | |
189 | xfs_fsop_handlereq_t *hreq) | |
190 | { | |
191 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
192 | } |
193 | ||
d5547f9f | 194 | int |
1da177e4 | 195 | xfs_open_by_handle( |
1da177e4 | 196 | struct file *parfilp, |
d296d30a | 197 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 198 | { |
745ca247 | 199 | const struct cred *cred = current_cred(); |
1da177e4 | 200 | int error; |
d296d30a | 201 | int fd; |
1da177e4 LT |
202 | int permflag; |
203 | struct file *filp; | |
204 | struct inode *inode; | |
205 | struct dentry *dentry; | |
1a1d7724 | 206 | fmode_t fmode; |
765927b2 | 207 | struct path path; |
1da177e4 LT |
208 | |
209 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 210 | return -EPERM; |
1da177e4 | 211 | |
d296d30a CH |
212 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
213 | if (IS_ERR(dentry)) | |
214 | return PTR_ERR(dentry); | |
2b0143b5 | 215 | inode = d_inode(dentry); |
1da177e4 LT |
216 | |
217 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
218 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
b474c7ae | 219 | error = -EPERM; |
d296d30a | 220 | goto out_dput; |
1da177e4 LT |
221 | } |
222 | ||
223 | #if BITS_PER_LONG != 32 | |
743bb465 | 224 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 225 | #endif |
d296d30a | 226 | |
743bb465 | 227 | permflag = hreq->oflags; |
1a1d7724 | 228 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 229 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 230 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
b474c7ae | 231 | error = -EPERM; |
d296d30a | 232 | goto out_dput; |
1da177e4 LT |
233 | } |
234 | ||
1a1d7724 | 235 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
337684a1 | 236 | error = -EPERM; |
d296d30a | 237 | goto out_dput; |
1da177e4 LT |
238 | } |
239 | ||
240 | /* Can't write directories. */ | |
1a1d7724 | 241 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
b474c7ae | 242 | error = -EISDIR; |
d296d30a | 243 | goto out_dput; |
1da177e4 LT |
244 | } |
245 | ||
862a6293 | 246 | fd = get_unused_fd_flags(0); |
d296d30a CH |
247 | if (fd < 0) { |
248 | error = fd; | |
249 | goto out_dput; | |
1da177e4 LT |
250 | } |
251 | ||
765927b2 AV |
252 | path.mnt = parfilp->f_path.mnt; |
253 | path.dentry = dentry; | |
254 | filp = dentry_open(&path, hreq->oflags, cred); | |
255 | dput(dentry); | |
1da177e4 | 256 | if (IS_ERR(filp)) { |
d296d30a CH |
257 | put_unused_fd(fd); |
258 | return PTR_ERR(filp); | |
1da177e4 | 259 | } |
4d4be482 | 260 | |
03209378 | 261 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 262 | filp->f_flags |= O_NOATIME; |
4d4be482 | 263 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 264 | } |
1da177e4 | 265 | |
d296d30a CH |
266 | fd_install(fd, filp); |
267 | return fd; | |
268 | ||
269 | out_dput: | |
270 | dput(dentry); | |
271 | return error; | |
1da177e4 LT |
272 | } |
273 | ||
d5547f9f | 274 | int |
1da177e4 | 275 | xfs_readlink_by_handle( |
d296d30a CH |
276 | struct file *parfilp, |
277 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 278 | { |
d296d30a | 279 | struct dentry *dentry; |
1da177e4 | 280 | __u32 olen; |
804c83c3 | 281 | int error; |
1da177e4 LT |
282 | |
283 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 284 | return -EPERM; |
1da177e4 | 285 | |
d296d30a CH |
286 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
287 | if (IS_ERR(dentry)) | |
288 | return PTR_ERR(dentry); | |
1da177e4 LT |
289 | |
290 | /* Restrict this handle operation to symlinks only. */ | |
fd4a0edf | 291 | if (!d_is_symlink(dentry)) { |
b474c7ae | 292 | error = -EINVAL; |
d296d30a | 293 | goto out_dput; |
1da177e4 LT |
294 | } |
295 | ||
743bb465 | 296 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
b474c7ae | 297 | error = -EFAULT; |
d296d30a | 298 | goto out_dput; |
1da177e4 | 299 | } |
1da177e4 | 300 | |
fd4a0edf | 301 | error = vfs_readlink(dentry, hreq->ohandle, olen); |
67fcaa73 | 302 | |
d296d30a CH |
303 | out_dput: |
304 | dput(dentry); | |
804c83c3 | 305 | return error; |
1da177e4 LT |
306 | } |
307 | ||
c24b5dfa DC |
308 | int |
309 | xfs_set_dmattrs( | |
310 | xfs_inode_t *ip, | |
311 | u_int evmask, | |
312 | u_int16_t state) | |
313 | { | |
314 | xfs_mount_t *mp = ip->i_mount; | |
315 | xfs_trans_t *tp; | |
316 | int error; | |
317 | ||
318 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 319 | return -EPERM; |
c24b5dfa DC |
320 | |
321 | if (XFS_FORCED_SHUTDOWN(mp)) | |
2451337d | 322 | return -EIO; |
c24b5dfa | 323 | |
253f4911 CH |
324 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp); |
325 | if (error) | |
c24b5dfa | 326 | return error; |
253f4911 | 327 | |
c24b5dfa DC |
328 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
329 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
330 | ||
331 | ip->i_d.di_dmevmask = evmask; | |
332 | ip->i_d.di_dmstate = state; | |
333 | ||
334 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
70393313 | 335 | error = xfs_trans_commit(tp); |
c24b5dfa DC |
336 | |
337 | return error; | |
338 | } | |
339 | ||
1da177e4 LT |
340 | STATIC int |
341 | xfs_fssetdm_by_handle( | |
d296d30a CH |
342 | struct file *parfilp, |
343 | void __user *arg) | |
1da177e4 LT |
344 | { |
345 | int error; | |
346 | struct fsdmidata fsd; | |
347 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 348 | struct dentry *dentry; |
1da177e4 LT |
349 | |
350 | if (!capable(CAP_MKNOD)) | |
b474c7ae | 351 | return -EPERM; |
1da177e4 | 352 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) |
b474c7ae | 353 | return -EFAULT; |
1da177e4 | 354 | |
d9457dc0 JK |
355 | error = mnt_want_write_file(parfilp); |
356 | if (error) | |
357 | return error; | |
358 | ||
d296d30a | 359 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
360 | if (IS_ERR(dentry)) { |
361 | mnt_drop_write_file(parfilp); | |
d296d30a | 362 | return PTR_ERR(dentry); |
d9457dc0 | 363 | } |
1da177e4 | 364 | |
2b0143b5 | 365 | if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) { |
b474c7ae | 366 | error = -EPERM; |
6e7f75ea | 367 | goto out; |
1da177e4 LT |
368 | } |
369 | ||
370 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
b474c7ae | 371 | error = -EFAULT; |
6e7f75ea | 372 | goto out; |
1da177e4 LT |
373 | } |
374 | ||
2b0143b5 | 375 | error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask, |
6e7f75ea | 376 | fsd.fsd_dmstate); |
1da177e4 | 377 | |
6e7f75ea | 378 | out: |
d9457dc0 | 379 | mnt_drop_write_file(parfilp); |
d296d30a | 380 | dput(dentry); |
6e7f75ea | 381 | return error; |
1da177e4 LT |
382 | } |
383 | ||
384 | STATIC int | |
385 | xfs_attrlist_by_handle( | |
d296d30a CH |
386 | struct file *parfilp, |
387 | void __user *arg) | |
1da177e4 | 388 | { |
d296d30a | 389 | int error = -ENOMEM; |
1da177e4 | 390 | attrlist_cursor_kern_t *cursor; |
0facef7f | 391 | struct xfs_fsop_attrlist_handlereq __user *p = arg; |
1da177e4 | 392 | xfs_fsop_attrlist_handlereq_t al_hreq; |
d296d30a | 393 | struct dentry *dentry; |
1da177e4 LT |
394 | char *kbuf; |
395 | ||
396 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 397 | return -EPERM; |
1da177e4 | 398 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) |
b474c7ae | 399 | return -EFAULT; |
071c529e | 400 | if (al_hreq.buflen < sizeof(struct attrlist) || |
4e247614 | 401 | al_hreq.buflen > XFS_XATTR_LIST_MAX) |
b474c7ae | 402 | return -EINVAL; |
1da177e4 | 403 | |
90ad58a8 CH |
404 | /* |
405 | * Reject flags, only allow namespaces. | |
406 | */ | |
407 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
b474c7ae | 408 | return -EINVAL; |
90ad58a8 | 409 | |
d296d30a CH |
410 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
411 | if (IS_ERR(dentry)) | |
412 | return PTR_ERR(dentry); | |
1da177e4 | 413 | |
fdd3ccee DC |
414 | kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); |
415 | if (!kbuf) | |
416 | goto out_dput; | |
1da177e4 LT |
417 | |
418 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
2b0143b5 | 419 | error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen, |
739bfb2a | 420 | al_hreq.flags, cursor); |
1da177e4 LT |
421 | if (error) |
422 | goto out_kfree; | |
423 | ||
0facef7f DW |
424 | if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) { |
425 | error = -EFAULT; | |
426 | goto out_kfree; | |
427 | } | |
428 | ||
1da177e4 LT |
429 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) |
430 | error = -EFAULT; | |
431 | ||
fdd3ccee DC |
432 | out_kfree: |
433 | kmem_free(kbuf); | |
434 | out_dput: | |
d296d30a CH |
435 | dput(dentry); |
436 | return error; | |
1da177e4 LT |
437 | } |
438 | ||
28750975 | 439 | int |
1da177e4 | 440 | xfs_attrmulti_attr_get( |
739bfb2a | 441 | struct inode *inode, |
a9273ca5 DC |
442 | unsigned char *name, |
443 | unsigned char __user *ubuf, | |
1da177e4 LT |
444 | __uint32_t *len, |
445 | __uint32_t flags) | |
446 | { | |
a9273ca5 | 447 | unsigned char *kbuf; |
2451337d | 448 | int error = -EFAULT; |
e8b0ebaa | 449 | |
51fcbfe7 | 450 | if (*len > XFS_XATTR_SIZE_MAX) |
2451337d | 451 | return -EINVAL; |
fdd3ccee DC |
452 | kbuf = kmem_zalloc_large(*len, KM_SLEEP); |
453 | if (!kbuf) | |
2451337d | 454 | return -ENOMEM; |
1da177e4 | 455 | |
e8b0ebaa | 456 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
457 | if (error) |
458 | goto out_kfree; | |
459 | ||
460 | if (copy_to_user(ubuf, kbuf, *len)) | |
2451337d | 461 | error = -EFAULT; |
1da177e4 | 462 | |
fdd3ccee DC |
463 | out_kfree: |
464 | kmem_free(kbuf); | |
1da177e4 LT |
465 | return error; |
466 | } | |
467 | ||
28750975 | 468 | int |
1da177e4 | 469 | xfs_attrmulti_attr_set( |
739bfb2a | 470 | struct inode *inode, |
a9273ca5 DC |
471 | unsigned char *name, |
472 | const unsigned char __user *ubuf, | |
1da177e4 LT |
473 | __uint32_t len, |
474 | __uint32_t flags) | |
475 | { | |
a9273ca5 | 476 | unsigned char *kbuf; |
09cb22d2 | 477 | int error; |
1da177e4 | 478 | |
739bfb2a | 479 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 480 | return -EPERM; |
51fcbfe7 | 481 | if (len > XFS_XATTR_SIZE_MAX) |
2451337d | 482 | return -EINVAL; |
1da177e4 | 483 | |
0e639bde LZ |
484 | kbuf = memdup_user(ubuf, len); |
485 | if (IS_ERR(kbuf)) | |
486 | return PTR_ERR(kbuf); | |
e8b0ebaa | 487 | |
09cb22d2 | 488 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
47e1bf64 AG |
489 | if (!error) |
490 | xfs_forget_acl(inode, name, flags); | |
09cb22d2 AG |
491 | kfree(kbuf); |
492 | return error; | |
1da177e4 LT |
493 | } |
494 | ||
28750975 | 495 | int |
1da177e4 | 496 | xfs_attrmulti_attr_remove( |
739bfb2a | 497 | struct inode *inode, |
a9273ca5 | 498 | unsigned char *name, |
1da177e4 LT |
499 | __uint32_t flags) |
500 | { | |
47e1bf64 AG |
501 | int error; |
502 | ||
739bfb2a | 503 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 504 | return -EPERM; |
47e1bf64 AG |
505 | error = xfs_attr_remove(XFS_I(inode), name, flags); |
506 | if (!error) | |
507 | xfs_forget_acl(inode, name, flags); | |
508 | return error; | |
1da177e4 LT |
509 | } |
510 | ||
511 | STATIC int | |
512 | xfs_attrmulti_by_handle( | |
42a74f20 | 513 | struct file *parfilp, |
d296d30a | 514 | void __user *arg) |
1da177e4 LT |
515 | { |
516 | int error; | |
517 | xfs_attr_multiop_t *ops; | |
518 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 519 | struct dentry *dentry; |
1da177e4 | 520 | unsigned int i, size; |
a9273ca5 | 521 | unsigned char *attr_name; |
1da177e4 LT |
522 | |
523 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 524 | return -EPERM; |
1da177e4 | 525 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
b474c7ae | 526 | return -EFAULT; |
1da177e4 | 527 | |
fda168c2 ZW |
528 | /* overflow check */ |
529 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
530 | return -E2BIG; | |
531 | ||
d296d30a CH |
532 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
533 | if (IS_ERR(dentry)) | |
534 | return PTR_ERR(dentry); | |
1da177e4 | 535 | |
2451337d | 536 | error = -E2BIG; |
e182f57a | 537 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 538 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 539 | goto out_dput; |
1da177e4 | 540 | |
0e639bde LZ |
541 | ops = memdup_user(am_hreq.ops, size); |
542 | if (IS_ERR(ops)) { | |
2451337d | 543 | error = PTR_ERR(ops); |
d296d30a | 544 | goto out_dput; |
0e639bde | 545 | } |
1da177e4 | 546 | |
2451337d | 547 | error = -ENOMEM; |
1da177e4 LT |
548 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
549 | if (!attr_name) | |
550 | goto out_kfree_ops; | |
551 | ||
1da177e4 LT |
552 | error = 0; |
553 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 554 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
555 | ops[i].am_attrname, MAXNAMELEN); |
556 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
2451337d | 557 | error = -ERANGE; |
1da177e4 LT |
558 | if (ops[i].am_error < 0) |
559 | break; | |
560 | ||
561 | switch (ops[i].am_opcode) { | |
562 | case ATTR_OP_GET: | |
d296d30a | 563 | ops[i].am_error = xfs_attrmulti_attr_get( |
2b0143b5 | 564 | d_inode(dentry), attr_name, |
d296d30a CH |
565 | ops[i].am_attrvalue, &ops[i].am_length, |
566 | ops[i].am_flags); | |
1da177e4 LT |
567 | break; |
568 | case ATTR_OP_SET: | |
a561be71 | 569 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
570 | if (ops[i].am_error) |
571 | break; | |
d296d30a | 572 | ops[i].am_error = xfs_attrmulti_attr_set( |
2b0143b5 | 573 | d_inode(dentry), attr_name, |
d296d30a CH |
574 | ops[i].am_attrvalue, ops[i].am_length, |
575 | ops[i].am_flags); | |
2a79f17e | 576 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
577 | break; |
578 | case ATTR_OP_REMOVE: | |
a561be71 | 579 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
580 | if (ops[i].am_error) |
581 | break; | |
d296d30a | 582 | ops[i].am_error = xfs_attrmulti_attr_remove( |
2b0143b5 | 583 | d_inode(dentry), attr_name, |
d296d30a | 584 | ops[i].am_flags); |
2a79f17e | 585 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
586 | break; |
587 | default: | |
2451337d | 588 | ops[i].am_error = -EINVAL; |
1da177e4 LT |
589 | } |
590 | } | |
591 | ||
592 | if (copy_to_user(am_hreq.ops, ops, size)) | |
2451337d | 593 | error = -EFAULT; |
1da177e4 LT |
594 | |
595 | kfree(attr_name); | |
596 | out_kfree_ops: | |
597 | kfree(ops); | |
d296d30a CH |
598 | out_dput: |
599 | dput(dentry); | |
2451337d | 600 | return error; |
1da177e4 LT |
601 | } |
602 | ||
d5547f9f | 603 | int |
1da177e4 | 604 | xfs_ioc_space( |
1da177e4 | 605 | struct file *filp, |
1da177e4 | 606 | unsigned int cmd, |
743bb465 | 607 | xfs_flock64_t *bf) |
1da177e4 | 608 | { |
8f3e2058 CH |
609 | struct inode *inode = file_inode(filp); |
610 | struct xfs_inode *ip = XFS_I(inode); | |
865e9446 | 611 | struct iattr iattr; |
8add71ca | 612 | enum xfs_prealloc_flags flags = 0; |
781355c6 | 613 | uint iolock = XFS_IOLOCK_EXCL; |
1da177e4 LT |
614 | int error; |
615 | ||
743bb465 | 616 | /* |
617 | * Only allow the sys admin to reserve space unless | |
618 | * unwritten extents are enabled. | |
619 | */ | |
620 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
621 | !capable(CAP_SYS_ADMIN)) | |
b474c7ae | 622 | return -EPERM; |
743bb465 | 623 | |
f37ea149 | 624 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
b474c7ae | 625 | return -EPERM; |
1da177e4 | 626 | |
ad4a8ac4 | 627 | if (!(filp->f_mode & FMODE_WRITE)) |
b474c7ae | 628 | return -EBADF; |
1da177e4 | 629 | |
f37ea149 | 630 | if (!S_ISREG(inode->i_mode)) |
b474c7ae | 631 | return -EINVAL; |
1da177e4 | 632 | |
8add71ca CH |
633 | if (filp->f_flags & O_DSYNC) |
634 | flags |= XFS_PREALLOC_SYNC; | |
8f3e2058 | 635 | if (filp->f_mode & FMODE_NOCMTIME) |
8add71ca CH |
636 | flags |= XFS_PREALLOC_INVISIBLE; |
637 | ||
d9457dc0 JK |
638 | error = mnt_want_write_file(filp); |
639 | if (error) | |
640 | return error; | |
865e9446 | 641 | |
781355c6 | 642 | xfs_ilock(ip, iolock); |
65523218 | 643 | error = xfs_break_layouts(inode, &iolock); |
781355c6 CH |
644 | if (error) |
645 | goto out_unlock; | |
865e9446 | 646 | |
e8e9ad42 DC |
647 | xfs_ilock(ip, XFS_MMAPLOCK_EXCL); |
648 | iolock |= XFS_MMAPLOCK_EXCL; | |
649 | ||
865e9446 CH |
650 | switch (bf->l_whence) { |
651 | case 0: /*SEEK_SET*/ | |
652 | break; | |
653 | case 1: /*SEEK_CUR*/ | |
654 | bf->l_start += filp->f_pos; | |
655 | break; | |
656 | case 2: /*SEEK_END*/ | |
657 | bf->l_start += XFS_ISIZE(ip); | |
658 | break; | |
659 | default: | |
2451337d | 660 | error = -EINVAL; |
865e9446 CH |
661 | goto out_unlock; |
662 | } | |
663 | ||
664 | /* | |
665 | * length of <= 0 for resv/unresv/zero is invalid. length for | |
666 | * alloc/free is ignored completely and we have no idea what userspace | |
667 | * might have set it to, so set it to zero to allow range | |
668 | * checks to pass. | |
669 | */ | |
670 | switch (cmd) { | |
671 | case XFS_IOC_ZERO_RANGE: | |
672 | case XFS_IOC_RESVSP: | |
673 | case XFS_IOC_RESVSP64: | |
674 | case XFS_IOC_UNRESVSP: | |
675 | case XFS_IOC_UNRESVSP64: | |
676 | if (bf->l_len <= 0) { | |
2451337d | 677 | error = -EINVAL; |
865e9446 CH |
678 | goto out_unlock; |
679 | } | |
680 | break; | |
681 | default: | |
682 | bf->l_len = 0; | |
683 | break; | |
684 | } | |
685 | ||
686 | if (bf->l_start < 0 || | |
8add71ca | 687 | bf->l_start > inode->i_sb->s_maxbytes || |
865e9446 | 688 | bf->l_start + bf->l_len < 0 || |
8add71ca | 689 | bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) { |
2451337d | 690 | error = -EINVAL; |
865e9446 CH |
691 | goto out_unlock; |
692 | } | |
693 | ||
694 | switch (cmd) { | |
695 | case XFS_IOC_ZERO_RANGE: | |
8add71ca | 696 | flags |= XFS_PREALLOC_SET; |
865e9446 | 697 | error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); |
865e9446 CH |
698 | break; |
699 | case XFS_IOC_RESVSP: | |
700 | case XFS_IOC_RESVSP64: | |
8add71ca | 701 | flags |= XFS_PREALLOC_SET; |
865e9446 CH |
702 | error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, |
703 | XFS_BMAPI_PREALLOC); | |
865e9446 CH |
704 | break; |
705 | case XFS_IOC_UNRESVSP: | |
706 | case XFS_IOC_UNRESVSP64: | |
707 | error = xfs_free_file_space(ip, bf->l_start, bf->l_len); | |
708 | break; | |
709 | case XFS_IOC_ALLOCSP: | |
710 | case XFS_IOC_ALLOCSP64: | |
711 | case XFS_IOC_FREESP: | |
712 | case XFS_IOC_FREESP64: | |
8add71ca | 713 | flags |= XFS_PREALLOC_CLEAR; |
865e9446 CH |
714 | if (bf->l_start > XFS_ISIZE(ip)) { |
715 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), | |
716 | bf->l_start - XFS_ISIZE(ip), 0); | |
717 | if (error) | |
718 | goto out_unlock; | |
719 | } | |
720 | ||
721 | iattr.ia_valid = ATTR_SIZE; | |
722 | iattr.ia_size = bf->l_start; | |
723 | ||
69bca807 | 724 | error = xfs_vn_setattr_size(file_dentry(filp), &iattr); |
865e9446 CH |
725 | break; |
726 | default: | |
727 | ASSERT(0); | |
2451337d | 728 | error = -EINVAL; |
865e9446 CH |
729 | } |
730 | ||
731 | if (error) | |
732 | goto out_unlock; | |
733 | ||
8add71ca | 734 | error = xfs_update_prealloc_flags(ip, flags); |
865e9446 CH |
735 | |
736 | out_unlock: | |
781355c6 | 737 | xfs_iunlock(ip, iolock); |
d9457dc0 | 738 | mnt_drop_write_file(filp); |
2451337d | 739 | return error; |
1da177e4 LT |
740 | } |
741 | ||
742 | STATIC int | |
743 | xfs_ioc_bulkstat( | |
744 | xfs_mount_t *mp, | |
745 | unsigned int cmd, | |
746 | void __user *arg) | |
747 | { | |
748 | xfs_fsop_bulkreq_t bulkreq; | |
749 | int count; /* # of records returned */ | |
750 | xfs_ino_t inlast; /* last inode number */ | |
751 | int done; | |
752 | int error; | |
753 | ||
754 | /* done = 1 if there are more stats to get and if bulkstat */ | |
755 | /* should be called again (unused here, but used in dmapi) */ | |
756 | ||
757 | if (!capable(CAP_SYS_ADMIN)) | |
758 | return -EPERM; | |
759 | ||
760 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 761 | return -EIO; |
1da177e4 LT |
762 | |
763 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
b474c7ae | 764 | return -EFAULT; |
1da177e4 LT |
765 | |
766 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
b474c7ae | 767 | return -EFAULT; |
1da177e4 LT |
768 | |
769 | if ((count = bulkreq.icount) <= 0) | |
b474c7ae | 770 | return -EINVAL; |
1da177e4 | 771 | |
cd57e594 | 772 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 773 | return -EINVAL; |
cd57e594 | 774 | |
1da177e4 LT |
775 | if (cmd == XFS_IOC_FSINUMBERS) |
776 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 777 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 | 778 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
d716f8ee CH |
779 | error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer, |
780 | sizeof(xfs_bstat_t), NULL, &done); | |
cd57e594 | 781 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
782 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
783 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
784 | &done); | |
1da177e4 LT |
785 | |
786 | if (error) | |
2451337d | 787 | return error; |
1da177e4 LT |
788 | |
789 | if (bulkreq.ocount != NULL) { | |
790 | if (copy_to_user(bulkreq.lastip, &inlast, | |
791 | sizeof(xfs_ino_t))) | |
b474c7ae | 792 | return -EFAULT; |
1da177e4 LT |
793 | |
794 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
b474c7ae | 795 | return -EFAULT; |
1da177e4 LT |
796 | } |
797 | ||
798 | return 0; | |
799 | } | |
800 | ||
801 | STATIC int | |
802 | xfs_ioc_fsgeometry_v1( | |
803 | xfs_mount_t *mp, | |
804 | void __user *arg) | |
805 | { | |
eeb2036b | 806 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
807 | int error; |
808 | ||
eeb2036b | 809 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 | 810 | if (error) |
2451337d | 811 | return error; |
1da177e4 | 812 | |
eeb2036b AE |
813 | /* |
814 | * Caller should have passed an argument of type | |
815 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
816 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
817 | */ | |
818 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
b474c7ae | 819 | return -EFAULT; |
1da177e4 LT |
820 | return 0; |
821 | } | |
822 | ||
823 | STATIC int | |
824 | xfs_ioc_fsgeometry( | |
825 | xfs_mount_t *mp, | |
826 | void __user *arg) | |
827 | { | |
828 | xfs_fsop_geom_t fsgeo; | |
829 | int error; | |
830 | ||
831 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
832 | if (error) | |
2451337d | 833 | return error; |
1da177e4 LT |
834 | |
835 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
b474c7ae | 836 | return -EFAULT; |
1da177e4 LT |
837 | return 0; |
838 | } | |
839 | ||
840 | /* | |
841 | * Linux extended inode flags interface. | |
842 | */ | |
1da177e4 LT |
843 | |
844 | STATIC unsigned int | |
845 | xfs_merge_ioc_xflags( | |
846 | unsigned int flags, | |
847 | unsigned int start) | |
848 | { | |
849 | unsigned int xflags = start; | |
850 | ||
39058a0e | 851 | if (flags & FS_IMMUTABLE_FL) |
e7b89481 | 852 | xflags |= FS_XFLAG_IMMUTABLE; |
1da177e4 | 853 | else |
e7b89481 | 854 | xflags &= ~FS_XFLAG_IMMUTABLE; |
39058a0e | 855 | if (flags & FS_APPEND_FL) |
e7b89481 | 856 | xflags |= FS_XFLAG_APPEND; |
1da177e4 | 857 | else |
e7b89481 | 858 | xflags &= ~FS_XFLAG_APPEND; |
39058a0e | 859 | if (flags & FS_SYNC_FL) |
e7b89481 | 860 | xflags |= FS_XFLAG_SYNC; |
1da177e4 | 861 | else |
e7b89481 | 862 | xflags &= ~FS_XFLAG_SYNC; |
39058a0e | 863 | if (flags & FS_NOATIME_FL) |
e7b89481 | 864 | xflags |= FS_XFLAG_NOATIME; |
1da177e4 | 865 | else |
e7b89481 | 866 | xflags &= ~FS_XFLAG_NOATIME; |
39058a0e | 867 | if (flags & FS_NODUMP_FL) |
e7b89481 | 868 | xflags |= FS_XFLAG_NODUMP; |
1da177e4 | 869 | else |
e7b89481 | 870 | xflags &= ~FS_XFLAG_NODUMP; |
1da177e4 LT |
871 | |
872 | return xflags; | |
873 | } | |
874 | ||
875 | STATIC unsigned int | |
876 | xfs_di2lxflags( | |
877 | __uint16_t di_flags) | |
878 | { | |
879 | unsigned int flags = 0; | |
880 | ||
881 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 882 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 883 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 884 | flags |= FS_APPEND_FL; |
1da177e4 | 885 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 886 | flags |= FS_SYNC_FL; |
1da177e4 | 887 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 888 | flags |= FS_NOATIME_FL; |
1da177e4 | 889 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 890 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
891 | return flags; |
892 | } | |
893 | ||
c83bfab1 CH |
894 | STATIC int |
895 | xfs_ioc_fsgetxattr( | |
896 | xfs_inode_t *ip, | |
897 | int attr, | |
898 | void __user *arg) | |
899 | { | |
900 | struct fsxattr fa; | |
901 | ||
a122eb2f DR |
902 | memset(&fa, 0, sizeof(struct fsxattr)); |
903 | ||
c83bfab1 CH |
904 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
905 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
906 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
f7ca3522 DW |
907 | fa.fsx_cowextsize = ip->i_d.di_cowextsize << |
908 | ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 909 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
910 | |
911 | if (attr) { | |
912 | if (ip->i_afp) { | |
913 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
5d829300 | 914 | fa.fsx_nextents = xfs_iext_count(ip->i_afp); |
c83bfab1 CH |
915 | else |
916 | fa.fsx_nextents = ip->i_d.di_anextents; | |
917 | } else | |
918 | fa.fsx_nextents = 0; | |
919 | } else { | |
920 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
5d829300 | 921 | fa.fsx_nextents = xfs_iext_count(&ip->i_df); |
c83bfab1 CH |
922 | else |
923 | fa.fsx_nextents = ip->i_d.di_nextents; | |
924 | } | |
925 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
926 | ||
927 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
928 | return -EFAULT; | |
929 | return 0; | |
930 | } | |
931 | ||
25fe55e8 CH |
932 | STATIC void |
933 | xfs_set_diflags( | |
934 | struct xfs_inode *ip, | |
935 | unsigned int xflags) | |
936 | { | |
937 | unsigned int di_flags; | |
58f88ca2 | 938 | uint64_t di_flags2; |
25fe55e8 CH |
939 | |
940 | /* can't set PREALLOC this way, just preserve it */ | |
941 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
e7b89481 | 942 | if (xflags & FS_XFLAG_IMMUTABLE) |
25fe55e8 | 943 | di_flags |= XFS_DIFLAG_IMMUTABLE; |
e7b89481 | 944 | if (xflags & FS_XFLAG_APPEND) |
25fe55e8 | 945 | di_flags |= XFS_DIFLAG_APPEND; |
e7b89481 | 946 | if (xflags & FS_XFLAG_SYNC) |
25fe55e8 | 947 | di_flags |= XFS_DIFLAG_SYNC; |
e7b89481 | 948 | if (xflags & FS_XFLAG_NOATIME) |
25fe55e8 | 949 | di_flags |= XFS_DIFLAG_NOATIME; |
e7b89481 | 950 | if (xflags & FS_XFLAG_NODUMP) |
25fe55e8 | 951 | di_flags |= XFS_DIFLAG_NODUMP; |
e7b89481 | 952 | if (xflags & FS_XFLAG_NODEFRAG) |
25fe55e8 | 953 | di_flags |= XFS_DIFLAG_NODEFRAG; |
e7b89481 | 954 | if (xflags & FS_XFLAG_FILESTREAM) |
25fe55e8 | 955 | di_flags |= XFS_DIFLAG_FILESTREAM; |
c19b3b05 | 956 | if (S_ISDIR(VFS_I(ip)->i_mode)) { |
e7b89481 | 957 | if (xflags & FS_XFLAG_RTINHERIT) |
25fe55e8 | 958 | di_flags |= XFS_DIFLAG_RTINHERIT; |
e7b89481 | 959 | if (xflags & FS_XFLAG_NOSYMLINKS) |
25fe55e8 | 960 | di_flags |= XFS_DIFLAG_NOSYMLINKS; |
e7b89481 | 961 | if (xflags & FS_XFLAG_EXTSZINHERIT) |
25fe55e8 | 962 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; |
e7b89481 | 963 | if (xflags & FS_XFLAG_PROJINHERIT) |
9336e3a7 | 964 | di_flags |= XFS_DIFLAG_PROJINHERIT; |
c19b3b05 | 965 | } else if (S_ISREG(VFS_I(ip)->i_mode)) { |
e7b89481 | 966 | if (xflags & FS_XFLAG_REALTIME) |
25fe55e8 | 967 | di_flags |= XFS_DIFLAG_REALTIME; |
e7b89481 | 968 | if (xflags & FS_XFLAG_EXTSIZE) |
25fe55e8 CH |
969 | di_flags |= XFS_DIFLAG_EXTSIZE; |
970 | } | |
25fe55e8 | 971 | ip->i_d.di_flags = di_flags; |
58f88ca2 DC |
972 | |
973 | /* diflags2 only valid for v3 inodes. */ | |
974 | if (ip->i_d.di_version < 3) | |
975 | return; | |
976 | ||
f7ca3522 | 977 | di_flags2 = (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK); |
58f88ca2 DC |
978 | if (xflags & FS_XFLAG_DAX) |
979 | di_flags2 |= XFS_DIFLAG2_DAX; | |
f7ca3522 DW |
980 | if (xflags & FS_XFLAG_COWEXTSIZE) |
981 | di_flags2 |= XFS_DIFLAG2_COWEXTSIZE; | |
58f88ca2 DC |
982 | |
983 | ip->i_d.di_flags2 = di_flags2; | |
25fe55e8 CH |
984 | } |
985 | ||
f13fae2d CH |
986 | STATIC void |
987 | xfs_diflags_to_linux( | |
988 | struct xfs_inode *ip) | |
989 | { | |
e4f75291 | 990 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
991 | unsigned int xflags = xfs_ip2xflags(ip); |
992 | ||
e7b89481 | 993 | if (xflags & FS_XFLAG_IMMUTABLE) |
f13fae2d CH |
994 | inode->i_flags |= S_IMMUTABLE; |
995 | else | |
996 | inode->i_flags &= ~S_IMMUTABLE; | |
e7b89481 | 997 | if (xflags & FS_XFLAG_APPEND) |
f13fae2d CH |
998 | inode->i_flags |= S_APPEND; |
999 | else | |
1000 | inode->i_flags &= ~S_APPEND; | |
e7b89481 | 1001 | if (xflags & FS_XFLAG_SYNC) |
f13fae2d CH |
1002 | inode->i_flags |= S_SYNC; |
1003 | else | |
1004 | inode->i_flags &= ~S_SYNC; | |
e7b89481 | 1005 | if (xflags & FS_XFLAG_NOATIME) |
f13fae2d CH |
1006 | inode->i_flags |= S_NOATIME; |
1007 | else | |
1008 | inode->i_flags &= ~S_NOATIME; | |
58f88ca2 DC |
1009 | if (xflags & FS_XFLAG_DAX) |
1010 | inode->i_flags |= S_DAX; | |
1011 | else | |
1012 | inode->i_flags &= ~S_DAX; | |
1013 | ||
f13fae2d | 1014 | } |
25fe55e8 | 1015 | |
29a17c00 DC |
1016 | static int |
1017 | xfs_ioctl_setattr_xflags( | |
1018 | struct xfs_trans *tp, | |
1019 | struct xfs_inode *ip, | |
1020 | struct fsxattr *fa) | |
1021 | { | |
1022 | struct xfs_mount *mp = ip->i_mount; | |
1023 | ||
1024 | /* Can't change realtime flag if any extents are allocated. */ | |
1025 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
e7b89481 | 1026 | XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME)) |
29a17c00 DC |
1027 | return -EINVAL; |
1028 | ||
1029 | /* If realtime flag is set then must have realtime device */ | |
e7b89481 | 1030 | if (fa->fsx_xflags & FS_XFLAG_REALTIME) { |
29a17c00 DC |
1031 | if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || |
1032 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) | |
1033 | return -EINVAL; | |
1034 | } | |
1035 | ||
1987fd74 | 1036 | /* Clear reflink if we are actually able to set the rt flag. */ |
c8e156ac | 1037 | if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip)) |
1987fd74 | 1038 | ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK; |
c8e156ac | 1039 | |
4f435ebe DW |
1040 | /* Don't allow us to set DAX mode for a reflinked file for now. */ |
1041 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip)) | |
1042 | return -EINVAL; | |
1043 | ||
29a17c00 DC |
1044 | /* |
1045 | * Can't modify an immutable/append-only file unless | |
1046 | * we have appropriate permission. | |
1047 | */ | |
1048 | if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) || | |
e7b89481 | 1049 | (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) && |
29a17c00 DC |
1050 | !capable(CAP_LINUX_IMMUTABLE)) |
1051 | return -EPERM; | |
1052 | ||
29a17c00 DC |
1053 | xfs_set_diflags(ip, fa->fsx_xflags); |
1054 | xfs_diflags_to_linux(ip); | |
1055 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); | |
1056 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
ff6d6af2 | 1057 | XFS_STATS_INC(mp, xs_ig_attrchg); |
29a17c00 DC |
1058 | return 0; |
1059 | } | |
1060 | ||
3a6a854a DC |
1061 | /* |
1062 | * If we are changing DAX flags, we have to ensure the file is clean and any | |
1063 | * cached objects in the address space are invalidated and removed. This | |
1064 | * requires us to lock out other IO and page faults similar to a truncate | |
1065 | * operation. The locks need to be held until the transaction has been committed | |
1066 | * so that the cache invalidation is atomic with respect to the DAX flag | |
1067 | * manipulation. | |
1068 | */ | |
1069 | static int | |
1070 | xfs_ioctl_setattr_dax_invalidate( | |
1071 | struct xfs_inode *ip, | |
1072 | struct fsxattr *fa, | |
1073 | int *join_flags) | |
1074 | { | |
1075 | struct inode *inode = VFS_I(ip); | |
1076 | int error; | |
1077 | ||
1078 | *join_flags = 0; | |
1079 | ||
e8897529 DC |
1080 | /* |
1081 | * It is only valid to set the DAX flag on regular files and | |
64485437 DC |
1082 | * directories on filesystems where the block size is equal to the page |
1083 | * size. On directories it serves as an inherit hint. | |
e8897529 | 1084 | */ |
64485437 DC |
1085 | if (fa->fsx_xflags & FS_XFLAG_DAX) { |
1086 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) | |
1087 | return -EINVAL; | |
1088 | if (ip->i_mount->m_sb.sb_blocksize != PAGE_SIZE) | |
1089 | return -EINVAL; | |
1090 | } | |
e8897529 | 1091 | |
3a6a854a DC |
1092 | /* If the DAX state is not changing, we have nothing to do here. */ |
1093 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode)) | |
1094 | return 0; | |
1095 | if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode)) | |
1096 | return 0; | |
1097 | ||
1098 | /* lock, flush and invalidate mapping in preparation for flag change */ | |
1099 | xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL); | |
1100 | error = filemap_write_and_wait(inode->i_mapping); | |
1101 | if (error) | |
1102 | goto out_unlock; | |
1103 | error = invalidate_inode_pages2(inode->i_mapping); | |
1104 | if (error) | |
1105 | goto out_unlock; | |
1106 | ||
1107 | *join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL; | |
29a17c00 | 1108 | return 0; |
3a6a854a DC |
1109 | |
1110 | out_unlock: | |
1111 | xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL); | |
1112 | return error; | |
1113 | ||
29a17c00 DC |
1114 | } |
1115 | ||
8f3d17ab DC |
1116 | /* |
1117 | * Set up the transaction structure for the setattr operation, checking that we | |
1118 | * have permission to do so. On success, return a clean transaction and the | |
1119 | * inode locked exclusively ready for further operation specific checks. On | |
1120 | * failure, return an error without modifying or locking the inode. | |
3a6a854a DC |
1121 | * |
1122 | * The inode might already be IO locked on call. If this is the case, it is | |
1123 | * indicated in @join_flags and we take full responsibility for ensuring they | |
1124 | * are unlocked from now on. Hence if we have an error here, we still have to | |
1125 | * unlock them. Otherwise, once they are joined to the transaction, they will | |
1126 | * be unlocked on commit/cancel. | |
8f3d17ab DC |
1127 | */ |
1128 | static struct xfs_trans * | |
1129 | xfs_ioctl_setattr_get_trans( | |
3a6a854a DC |
1130 | struct xfs_inode *ip, |
1131 | int join_flags) | |
8f3d17ab DC |
1132 | { |
1133 | struct xfs_mount *mp = ip->i_mount; | |
1134 | struct xfs_trans *tp; | |
3a6a854a | 1135 | int error = -EROFS; |
8f3d17ab DC |
1136 | |
1137 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
3a6a854a DC |
1138 | goto out_unlock; |
1139 | error = -EIO; | |
8f3d17ab | 1140 | if (XFS_FORCED_SHUTDOWN(mp)) |
3a6a854a | 1141 | goto out_unlock; |
8f3d17ab | 1142 | |
253f4911 | 1143 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp); |
8f3d17ab | 1144 | if (error) |
253f4911 | 1145 | return ERR_PTR(error); |
8f3d17ab DC |
1146 | |
1147 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
3a6a854a DC |
1148 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags); |
1149 | join_flags = 0; | |
8f3d17ab DC |
1150 | |
1151 | /* | |
1152 | * CAP_FOWNER overrides the following restrictions: | |
1153 | * | |
1154 | * The user ID of the calling process must be equal to the file owner | |
1155 | * ID, except in cases where the CAP_FSETID capability is applicable. | |
1156 | */ | |
1157 | if (!inode_owner_or_capable(VFS_I(ip))) { | |
1158 | error = -EPERM; | |
1159 | goto out_cancel; | |
1160 | } | |
1161 | ||
1162 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1163 | xfs_trans_set_sync(tp); | |
1164 | ||
1165 | return tp; | |
1166 | ||
1167 | out_cancel: | |
4906e215 | 1168 | xfs_trans_cancel(tp); |
3a6a854a DC |
1169 | out_unlock: |
1170 | if (join_flags) | |
1171 | xfs_iunlock(ip, join_flags); | |
8f3d17ab DC |
1172 | return ERR_PTR(error); |
1173 | } | |
1174 | ||
9b94fcc3 IP |
1175 | /* |
1176 | * extent size hint validation is somewhat cumbersome. Rules are: | |
1177 | * | |
1178 | * 1. extent size hint is only valid for directories and regular files | |
e7b89481 DC |
1179 | * 2. FS_XFLAG_EXTSIZE is only valid for regular files |
1180 | * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories. | |
9b94fcc3 IP |
1181 | * 4. can only be changed on regular files if no extents are allocated |
1182 | * 5. can be changed on directories at any time | |
1183 | * 6. extsize hint of 0 turns off hints, clears inode flags. | |
1184 | * 7. Extent size must be a multiple of the appropriate block size. | |
1185 | * 8. for non-realtime files, the extent size hint must be limited | |
1186 | * to half the AG size to avoid alignment extending the extent beyond the | |
1187 | * limits of the AG. | |
1188 | */ | |
f92090e9 | 1189 | static int |
d4388d3c DC |
1190 | xfs_ioctl_setattr_check_extsize( |
1191 | struct xfs_inode *ip, | |
1192 | struct fsxattr *fa) | |
1193 | { | |
1194 | struct xfs_mount *mp = ip->i_mount; | |
1195 | ||
c19b3b05 | 1196 | if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode)) |
9b94fcc3 IP |
1197 | return -EINVAL; |
1198 | ||
e7b89481 | 1199 | if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) && |
c19b3b05 | 1200 | !S_ISDIR(VFS_I(ip)->i_mode)) |
9b94fcc3 IP |
1201 | return -EINVAL; |
1202 | ||
c19b3b05 | 1203 | if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents && |
d4388d3c DC |
1204 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize)) |
1205 | return -EINVAL; | |
1206 | ||
d4388d3c DC |
1207 | if (fa->fsx_extsize != 0) { |
1208 | xfs_extlen_t size; | |
1209 | xfs_fsblock_t extsize_fsb; | |
1210 | ||
1211 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1212 | if (extsize_fsb > MAXEXTLEN) | |
1213 | return -EINVAL; | |
1214 | ||
1215 | if (XFS_IS_REALTIME_INODE(ip) || | |
e7b89481 | 1216 | (fa->fsx_xflags & FS_XFLAG_REALTIME)) { |
d4388d3c DC |
1217 | size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog; |
1218 | } else { | |
1219 | size = mp->m_sb.sb_blocksize; | |
1220 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1221 | return -EINVAL; | |
1222 | } | |
1223 | ||
1224 | if (fa->fsx_extsize % size) | |
1225 | return -EINVAL; | |
9b94fcc3 | 1226 | } else |
e7b89481 | 1227 | fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT); |
9b94fcc3 | 1228 | |
d4388d3c DC |
1229 | return 0; |
1230 | } | |
1231 | ||
f7ca3522 DW |
1232 | /* |
1233 | * CoW extent size hint validation rules are: | |
1234 | * | |
1235 | * 1. CoW extent size hint can only be set if reflink is enabled on the fs. | |
1236 | * The inode does not have to have any shared blocks, but it must be a v3. | |
1237 | * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files; | |
1238 | * for a directory, the hint is propagated to new files. | |
1239 | * 3. Can be changed on files & directories at any time. | |
1240 | * 4. CoW extsize hint of 0 turns off hints, clears inode flags. | |
1241 | * 5. Extent size must be a multiple of the appropriate block size. | |
1242 | * 6. The extent size hint must be limited to half the AG size to avoid | |
1243 | * alignment extending the extent beyond the limits of the AG. | |
1244 | */ | |
1245 | static int | |
1246 | xfs_ioctl_setattr_check_cowextsize( | |
1247 | struct xfs_inode *ip, | |
1248 | struct fsxattr *fa) | |
1249 | { | |
1250 | struct xfs_mount *mp = ip->i_mount; | |
1251 | ||
1252 | if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE)) | |
1253 | return 0; | |
1254 | ||
1255 | if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb) || | |
1256 | ip->i_d.di_version != 3) | |
1257 | return -EINVAL; | |
1258 | ||
1259 | if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode)) | |
1260 | return -EINVAL; | |
1261 | ||
1262 | if (fa->fsx_cowextsize != 0) { | |
1263 | xfs_extlen_t size; | |
1264 | xfs_fsblock_t cowextsize_fsb; | |
1265 | ||
1266 | cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize); | |
1267 | if (cowextsize_fsb > MAXEXTLEN) | |
1268 | return -EINVAL; | |
1269 | ||
1270 | size = mp->m_sb.sb_blocksize; | |
1271 | if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1272 | return -EINVAL; | |
1273 | ||
1274 | if (fa->fsx_cowextsize % size) | |
1275 | return -EINVAL; | |
1276 | } else | |
1277 | fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE; | |
1278 | ||
1279 | return 0; | |
1280 | } | |
1281 | ||
f92090e9 | 1282 | static int |
23bd0735 DC |
1283 | xfs_ioctl_setattr_check_projid( |
1284 | struct xfs_inode *ip, | |
1285 | struct fsxattr *fa) | |
1286 | { | |
1287 | /* Disallow 32bit project ids if projid32bit feature is not enabled. */ | |
1288 | if (fa->fsx_projid > (__uint16_t)-1 && | |
1289 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
1290 | return -EINVAL; | |
1291 | ||
1292 | /* | |
1293 | * Project Quota ID state is only allowed to change from within the init | |
1294 | * namespace. Enforce that restriction only if we are trying to change | |
1295 | * the quota ID state. Everything else is allowed in user namespaces. | |
1296 | */ | |
1297 | if (current_user_ns() == &init_user_ns) | |
1298 | return 0; | |
1299 | ||
1300 | if (xfs_get_projid(ip) != fa->fsx_projid) | |
1301 | return -EINVAL; | |
e7b89481 | 1302 | if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) != |
23bd0735 DC |
1303 | (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)) |
1304 | return -EINVAL; | |
1305 | ||
1306 | return 0; | |
1307 | } | |
25fe55e8 CH |
1308 | |
1309 | STATIC int | |
1310 | xfs_ioctl_setattr( | |
1311 | xfs_inode_t *ip, | |
fd179b9c | 1312 | struct fsxattr *fa) |
25fe55e8 CH |
1313 | { |
1314 | struct xfs_mount *mp = ip->i_mount; | |
1315 | struct xfs_trans *tp; | |
7d095257 | 1316 | struct xfs_dquot *udqp = NULL; |
92f8ff73 | 1317 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
1318 | struct xfs_dquot *olddquot = NULL; |
1319 | int code; | |
3a6a854a | 1320 | int join_flags = 0; |
25fe55e8 | 1321 | |
cca28fb8 | 1322 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 | 1323 | |
23bd0735 DC |
1324 | code = xfs_ioctl_setattr_check_projid(ip, fa); |
1325 | if (code) | |
1326 | return code; | |
23963e54 | 1327 | |
25fe55e8 CH |
1328 | /* |
1329 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
1330 | * before we start any other transactions. Trying to do this later | |
1331 | * is messy. We don't care to take a readlock to look at the ids | |
1332 | * in inode here, because we can't hold it across the trans_reserve. | |
1333 | * If the IDs do change before we take the ilock, we're covered | |
1334 | * because the i_*dquot fields will get updated anyway. | |
1335 | */ | |
fd179b9c | 1336 | if (XFS_IS_QUOTA_ON(mp)) { |
7d095257 | 1337 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 | 1338 | ip->i_d.di_gid, fa->fsx_projid, |
92f8ff73 | 1339 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
25fe55e8 CH |
1340 | if (code) |
1341 | return code; | |
1342 | } | |
1343 | ||
3a6a854a DC |
1344 | /* |
1345 | * Changing DAX config may require inode locking for mapping | |
1346 | * invalidation. These need to be held all the way to transaction commit | |
1347 | * or cancel time, so need to be passed through to | |
1348 | * xfs_ioctl_setattr_get_trans() so it can apply them to the join call | |
1349 | * appropriately. | |
1350 | */ | |
1351 | code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags); | |
1352 | if (code) | |
1353 | goto error_free_dquots; | |
1354 | ||
1355 | tp = xfs_ioctl_setattr_get_trans(ip, join_flags); | |
8f3d17ab DC |
1356 | if (IS_ERR(tp)) { |
1357 | code = PTR_ERR(tp); | |
1358 | goto error_free_dquots; | |
25fe55e8 CH |
1359 | } |
1360 | ||
25fe55e8 | 1361 | |
fd179b9c DC |
1362 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && |
1363 | xfs_get_projid(ip) != fa->fsx_projid) { | |
1364 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp, | |
1365 | capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0); | |
1366 | if (code) /* out of quota */ | |
d4388d3c | 1367 | goto error_trans_cancel; |
25fe55e8 CH |
1368 | } |
1369 | ||
d4388d3c DC |
1370 | code = xfs_ioctl_setattr_check_extsize(ip, fa); |
1371 | if (code) | |
1372 | goto error_trans_cancel; | |
25fe55e8 | 1373 | |
f7ca3522 DW |
1374 | code = xfs_ioctl_setattr_check_cowextsize(ip, fa); |
1375 | if (code) | |
1376 | goto error_trans_cancel; | |
1377 | ||
29a17c00 DC |
1378 | code = xfs_ioctl_setattr_xflags(tp, ip, fa); |
1379 | if (code) | |
d4388d3c | 1380 | goto error_trans_cancel; |
25fe55e8 CH |
1381 | |
1382 | /* | |
fd179b9c DC |
1383 | * Change file ownership. Must be the owner or privileged. CAP_FSETID |
1384 | * overrides the following restrictions: | |
1385 | * | |
1386 | * The set-user-ID and set-group-ID bits of a file will be cleared upon | |
1387 | * successful return from chown() | |
25fe55e8 | 1388 | */ |
25fe55e8 | 1389 | |
c19b3b05 | 1390 | if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) && |
fd179b9c | 1391 | !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) |
c19b3b05 | 1392 | VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID); |
25fe55e8 | 1393 | |
fd179b9c DC |
1394 | /* Change the ownerships and register project quota modifications */ |
1395 | if (xfs_get_projid(ip) != fa->fsx_projid) { | |
1396 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { | |
1397 | olddquot = xfs_qm_vop_chown(tp, ip, | |
1398 | &ip->i_pdquot, pdqp); | |
1399 | } | |
1400 | ASSERT(ip->i_d.di_version > 1); | |
1401 | xfs_set_projid(ip, fa->fsx_projid); | |
f13fae2d | 1402 | } |
25fe55e8 | 1403 | |
a872703f DC |
1404 | /* |
1405 | * Only set the extent size hint if we've already determined that the | |
1406 | * extent size hint should be set on the inode. If no extent size flags | |
1407 | * are set on the inode then unconditionally clear the extent size hint. | |
1408 | */ | |
fd179b9c DC |
1409 | if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) |
1410 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
1411 | else | |
1412 | ip->i_d.di_extsize = 0; | |
f7ca3522 DW |
1413 | if (ip->i_d.di_version == 3 && |
1414 | (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE)) | |
1415 | ip->i_d.di_cowextsize = fa->fsx_cowextsize >> | |
1416 | mp->m_sb.sb_blocklog; | |
1417 | else | |
1418 | ip->i_d.di_cowextsize = 0; | |
25fe55e8 | 1419 | |
70393313 | 1420 | code = xfs_trans_commit(tp); |
25fe55e8 CH |
1421 | |
1422 | /* | |
1423 | * Release any dquot(s) the inode had kept before chown. | |
1424 | */ | |
7d095257 CH |
1425 | xfs_qm_dqrele(olddquot); |
1426 | xfs_qm_dqrele(udqp); | |
92f8ff73 | 1427 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1428 | |
288699fe | 1429 | return code; |
25fe55e8 | 1430 | |
d4388d3c | 1431 | error_trans_cancel: |
4906e215 | 1432 | xfs_trans_cancel(tp); |
8f3d17ab | 1433 | error_free_dquots: |
7d095257 | 1434 | xfs_qm_dqrele(udqp); |
92f8ff73 | 1435 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1436 | return code; |
1437 | } | |
1438 | ||
1da177e4 | 1439 | STATIC int |
df26cfe8 | 1440 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1441 | xfs_inode_t *ip, |
1442 | struct file *filp, | |
1da177e4 LT |
1443 | void __user *arg) |
1444 | { | |
1445 | struct fsxattr fa; | |
d9457dc0 | 1446 | int error; |
df26cfe8 LM |
1447 | |
1448 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1449 | return -EFAULT; | |
1da177e4 | 1450 | |
d9457dc0 JK |
1451 | error = mnt_want_write_file(filp); |
1452 | if (error) | |
1453 | return error; | |
fd179b9c | 1454 | error = xfs_ioctl_setattr(ip, &fa); |
d9457dc0 | 1455 | mnt_drop_write_file(filp); |
2451337d | 1456 | return error; |
df26cfe8 | 1457 | } |
1da177e4 | 1458 | |
df26cfe8 LM |
1459 | STATIC int |
1460 | xfs_ioc_getxflags( | |
1461 | xfs_inode_t *ip, | |
1462 | void __user *arg) | |
1463 | { | |
1464 | unsigned int flags; | |
1da177e4 | 1465 | |
df26cfe8 LM |
1466 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1467 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1468 | return -EFAULT; | |
1469 | return 0; | |
1470 | } | |
1da177e4 | 1471 | |
df26cfe8 LM |
1472 | STATIC int |
1473 | xfs_ioc_setxflags( | |
f96291f6 | 1474 | struct xfs_inode *ip, |
df26cfe8 LM |
1475 | struct file *filp, |
1476 | void __user *arg) | |
1477 | { | |
f96291f6 | 1478 | struct xfs_trans *tp; |
25fe55e8 | 1479 | struct fsxattr fa; |
df26cfe8 | 1480 | unsigned int flags; |
3a6a854a | 1481 | int join_flags = 0; |
f96291f6 | 1482 | int error; |
1da177e4 | 1483 | |
df26cfe8 LM |
1484 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1485 | return -EFAULT; | |
1da177e4 | 1486 | |
df26cfe8 LM |
1487 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1488 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1489 | FS_SYNC_FL)) | |
1490 | return -EOPNOTSUPP; | |
1da177e4 | 1491 | |
25fe55e8 | 1492 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); |
1da177e4 | 1493 | |
d9457dc0 JK |
1494 | error = mnt_want_write_file(filp); |
1495 | if (error) | |
1496 | return error; | |
f96291f6 | 1497 | |
3a6a854a DC |
1498 | /* |
1499 | * Changing DAX config may require inode locking for mapping | |
1500 | * invalidation. These need to be held all the way to transaction commit | |
1501 | * or cancel time, so need to be passed through to | |
1502 | * xfs_ioctl_setattr_get_trans() so it can apply them to the join call | |
1503 | * appropriately. | |
1504 | */ | |
1505 | error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags); | |
1506 | if (error) | |
1507 | goto out_drop_write; | |
1508 | ||
1509 | tp = xfs_ioctl_setattr_get_trans(ip, join_flags); | |
f96291f6 DC |
1510 | if (IS_ERR(tp)) { |
1511 | error = PTR_ERR(tp); | |
1512 | goto out_drop_write; | |
1513 | } | |
1514 | ||
1515 | error = xfs_ioctl_setattr_xflags(tp, ip, &fa); | |
1516 | if (error) { | |
4906e215 | 1517 | xfs_trans_cancel(tp); |
f96291f6 DC |
1518 | goto out_drop_write; |
1519 | } | |
1520 | ||
70393313 | 1521 | error = xfs_trans_commit(tp); |
f96291f6 | 1522 | out_drop_write: |
d9457dc0 | 1523 | mnt_drop_write_file(filp); |
2451337d | 1524 | return error; |
1da177e4 LT |
1525 | } |
1526 | ||
8a7141a8 | 1527 | STATIC int |
1dbba086 | 1528 | xfs_getbmap_format(void **ap, struct getbmapx *bmv) |
8a7141a8 | 1529 | { |
b972d079 | 1530 | struct getbmap __user *base = (struct getbmap __user *)*ap; |
8a7141a8 ES |
1531 | |
1532 | /* copy only getbmap portion (not getbmapx) */ | |
1533 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
2451337d | 1534 | return -EFAULT; |
8a7141a8 ES |
1535 | |
1536 | *ap += sizeof(struct getbmap); | |
1537 | return 0; | |
1538 | } | |
1539 | ||
1da177e4 LT |
1540 | STATIC int |
1541 | xfs_ioc_getbmap( | |
8f3e2058 | 1542 | struct file *file, |
1da177e4 LT |
1543 | unsigned int cmd, |
1544 | void __user *arg) | |
1545 | { | |
8a7141a8 | 1546 | struct getbmapx bmx; |
1da177e4 LT |
1547 | int error; |
1548 | ||
8a7141a8 | 1549 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
b474c7ae | 1550 | return -EFAULT; |
1da177e4 | 1551 | |
8a7141a8 | 1552 | if (bmx.bmv_count < 2) |
b474c7ae | 1553 | return -EINVAL; |
1da177e4 | 1554 | |
8a7141a8 | 1555 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
8f3e2058 | 1556 | if (file->f_mode & FMODE_NOCMTIME) |
8a7141a8 | 1557 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1558 | |
8f3e2058 | 1559 | error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format, |
b972d079 | 1560 | (__force struct getbmap *)arg+1); |
1da177e4 | 1561 | if (error) |
2451337d | 1562 | return error; |
1da177e4 | 1563 | |
8a7141a8 ES |
1564 | /* copy back header - only size of getbmap */ |
1565 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
b474c7ae | 1566 | return -EFAULT; |
1da177e4 LT |
1567 | return 0; |
1568 | } | |
1569 | ||
8a7141a8 | 1570 | STATIC int |
1dbba086 | 1571 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv) |
8a7141a8 | 1572 | { |
b972d079 | 1573 | struct getbmapx __user *base = (struct getbmapx __user *)*ap; |
8a7141a8 ES |
1574 | |
1575 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
2451337d | 1576 | return -EFAULT; |
8a7141a8 ES |
1577 | |
1578 | *ap += sizeof(struct getbmapx); | |
1579 | return 0; | |
1580 | } | |
1581 | ||
1da177e4 LT |
1582 | STATIC int |
1583 | xfs_ioc_getbmapx( | |
993386c1 | 1584 | struct xfs_inode *ip, |
1da177e4 LT |
1585 | void __user *arg) |
1586 | { | |
1587 | struct getbmapx bmx; | |
1da177e4 LT |
1588 | int error; |
1589 | ||
1590 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
b474c7ae | 1591 | return -EFAULT; |
1da177e4 LT |
1592 | |
1593 | if (bmx.bmv_count < 2) | |
b474c7ae | 1594 | return -EINVAL; |
1da177e4 | 1595 | |
8a7141a8 | 1596 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
b474c7ae | 1597 | return -EINVAL; |
1da177e4 | 1598 | |
8a7141a8 | 1599 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
b972d079 | 1600 | (__force struct getbmapx *)arg+1); |
1da177e4 | 1601 | if (error) |
2451337d | 1602 | return error; |
1da177e4 | 1603 | |
8a7141a8 ES |
1604 | /* copy back header */ |
1605 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
b474c7ae | 1606 | return -EFAULT; |
1da177e4 LT |
1607 | |
1608 | return 0; | |
1609 | } | |
df26cfe8 | 1610 | |
a133d952 DC |
1611 | int |
1612 | xfs_ioc_swapext( | |
1613 | xfs_swapext_t *sxp) | |
1614 | { | |
1615 | xfs_inode_t *ip, *tip; | |
1616 | struct fd f, tmp; | |
1617 | int error = 0; | |
1618 | ||
1619 | /* Pull information for the target fd */ | |
1620 | f = fdget((int)sxp->sx_fdtarget); | |
1621 | if (!f.file) { | |
2451337d | 1622 | error = -EINVAL; |
a133d952 DC |
1623 | goto out; |
1624 | } | |
1625 | ||
1626 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1627 | !(f.file->f_mode & FMODE_READ) || | |
1628 | (f.file->f_flags & O_APPEND)) { | |
2451337d | 1629 | error = -EBADF; |
a133d952 DC |
1630 | goto out_put_file; |
1631 | } | |
1632 | ||
1633 | tmp = fdget((int)sxp->sx_fdtmp); | |
1634 | if (!tmp.file) { | |
2451337d | 1635 | error = -EINVAL; |
a133d952 DC |
1636 | goto out_put_file; |
1637 | } | |
1638 | ||
1639 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1640 | !(tmp.file->f_mode & FMODE_READ) || | |
1641 | (tmp.file->f_flags & O_APPEND)) { | |
2451337d | 1642 | error = -EBADF; |
a133d952 DC |
1643 | goto out_put_tmp_file; |
1644 | } | |
1645 | ||
1646 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1647 | IS_SWAPFILE(file_inode(tmp.file))) { | |
2451337d | 1648 | error = -EINVAL; |
a133d952 DC |
1649 | goto out_put_tmp_file; |
1650 | } | |
1651 | ||
7f1b6245 JH |
1652 | /* |
1653 | * We need to ensure that the fds passed in point to XFS inodes | |
1654 | * before we cast and access them as XFS structures as we have no | |
1655 | * control over what the user passes us here. | |
1656 | */ | |
1657 | if (f.file->f_op != &xfs_file_operations || | |
1658 | tmp.file->f_op != &xfs_file_operations) { | |
1659 | error = -EINVAL; | |
1660 | goto out_put_tmp_file; | |
1661 | } | |
1662 | ||
a133d952 DC |
1663 | ip = XFS_I(file_inode(f.file)); |
1664 | tip = XFS_I(file_inode(tmp.file)); | |
1665 | ||
1666 | if (ip->i_mount != tip->i_mount) { | |
2451337d | 1667 | error = -EINVAL; |
a133d952 DC |
1668 | goto out_put_tmp_file; |
1669 | } | |
1670 | ||
1671 | if (ip->i_ino == tip->i_ino) { | |
2451337d | 1672 | error = -EINVAL; |
a133d952 DC |
1673 | goto out_put_tmp_file; |
1674 | } | |
1675 | ||
1676 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
2451337d | 1677 | error = -EIO; |
a133d952 DC |
1678 | goto out_put_tmp_file; |
1679 | } | |
1680 | ||
1681 | error = xfs_swap_extents(ip, tip, sxp); | |
1682 | ||
1683 | out_put_tmp_file: | |
1684 | fdput(tmp); | |
1685 | out_put_file: | |
1686 | fdput(f); | |
1687 | out: | |
1688 | return error; | |
1689 | } | |
1690 | ||
4d4be482 CH |
1691 | /* |
1692 | * Note: some of the ioctl's return positive numbers as a | |
1693 | * byte count indicating success, such as readlink_by_handle. | |
1694 | * So we don't "sign flip" like most other routines. This means | |
1695 | * true errors need to be returned as a negative value. | |
1696 | */ | |
1697 | long | |
1698 | xfs_file_ioctl( | |
df26cfe8 | 1699 | struct file *filp, |
df26cfe8 | 1700 | unsigned int cmd, |
4d4be482 | 1701 | unsigned long p) |
df26cfe8 | 1702 | { |
496ad9aa | 1703 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1704 | struct xfs_inode *ip = XFS_I(inode); |
1705 | struct xfs_mount *mp = ip->i_mount; | |
1706 | void __user *arg = (void __user *)p; | |
df26cfe8 LM |
1707 | int error; |
1708 | ||
cca28fb8 | 1709 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1710 | |
1711 | switch (cmd) { | |
a46db608 CH |
1712 | case FITRIM: |
1713 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1714 | case XFS_IOC_ALLOCSP: |
1715 | case XFS_IOC_FREESP: | |
1716 | case XFS_IOC_RESVSP: | |
1717 | case XFS_IOC_UNRESVSP: | |
1718 | case XFS_IOC_ALLOCSP64: | |
1719 | case XFS_IOC_FREESP64: | |
1720 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1721 | case XFS_IOC_UNRESVSP64: |
1722 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1723 | xfs_flock64_t bf; |
df26cfe8 | 1724 | |
743bb465 | 1725 | if (copy_from_user(&bf, arg, sizeof(bf))) |
b474c7ae | 1726 | return -EFAULT; |
8f3e2058 | 1727 | return xfs_ioc_space(filp, cmd, &bf); |
743bb465 | 1728 | } |
df26cfe8 LM |
1729 | case XFS_IOC_DIOINFO: { |
1730 | struct dioattr da; | |
1731 | xfs_buftarg_t *target = | |
1732 | XFS_IS_REALTIME_INODE(ip) ? | |
1733 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1734 | ||
7c71ee78 | 1735 | da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; |
df26cfe8 LM |
1736 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1737 | ||
1738 | if (copy_to_user(arg, &da, sizeof(da))) | |
b474c7ae | 1739 | return -EFAULT; |
df26cfe8 LM |
1740 | return 0; |
1741 | } | |
1742 | ||
1743 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1744 | case XFS_IOC_FSBULKSTAT: | |
1745 | case XFS_IOC_FSINUMBERS: | |
1746 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1747 | ||
1748 | case XFS_IOC_FSGEOMETRY_V1: | |
1749 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1750 | ||
1751 | case XFS_IOC_FSGEOMETRY: | |
1752 | return xfs_ioc_fsgeometry(mp, arg); | |
1753 | ||
1754 | case XFS_IOC_GETVERSION: | |
1755 | return put_user(inode->i_generation, (int __user *)arg); | |
1756 | ||
1757 | case XFS_IOC_FSGETXATTR: | |
1758 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1759 | case XFS_IOC_FSGETXATTRA: | |
1760 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1761 | case XFS_IOC_FSSETXATTR: |
1762 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1763 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1764 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1765 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1766 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1767 | |
1768 | case XFS_IOC_FSSETDM: { | |
1769 | struct fsdmidata dmi; | |
1770 | ||
1771 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
b474c7ae | 1772 | return -EFAULT; |
df26cfe8 | 1773 | |
d9457dc0 JK |
1774 | error = mnt_want_write_file(filp); |
1775 | if (error) | |
1776 | return error; | |
1777 | ||
df26cfe8 LM |
1778 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1779 | dmi.fsd_dmstate); | |
d9457dc0 | 1780 | mnt_drop_write_file(filp); |
2451337d | 1781 | return error; |
df26cfe8 LM |
1782 | } |
1783 | ||
1784 | case XFS_IOC_GETBMAP: | |
1785 | case XFS_IOC_GETBMAPA: | |
8f3e2058 | 1786 | return xfs_ioc_getbmap(filp, cmd, arg); |
df26cfe8 LM |
1787 | |
1788 | case XFS_IOC_GETBMAPX: | |
1789 | return xfs_ioc_getbmapx(ip, arg); | |
1790 | ||
1791 | case XFS_IOC_FD_TO_HANDLE: | |
1792 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1793 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1794 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1795 | |
743bb465 | 1796 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
b474c7ae | 1797 | return -EFAULT; |
743bb465 | 1798 | return xfs_find_handle(cmd, &hreq); |
1799 | } | |
1800 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1801 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1802 | |
743bb465 | 1803 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1804 | return -EFAULT; |
d296d30a | 1805 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1806 | } |
df26cfe8 | 1807 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1808 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1809 | |
743bb465 | 1810 | case XFS_IOC_READLINK_BY_HANDLE: { |
1811 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1812 | |
743bb465 | 1813 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1814 | return -EFAULT; |
d296d30a | 1815 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1816 | } |
df26cfe8 | 1817 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1818 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1819 | |
1820 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1821 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1822 | |
1823 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1824 | struct xfs_swapext sxp; |
1825 | ||
1826 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
b474c7ae | 1827 | return -EFAULT; |
d9457dc0 JK |
1828 | error = mnt_want_write_file(filp); |
1829 | if (error) | |
1830 | return error; | |
a133d952 | 1831 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 1832 | mnt_drop_write_file(filp); |
2451337d | 1833 | return error; |
df26cfe8 LM |
1834 | } |
1835 | ||
1836 | case XFS_IOC_FSCOUNTS: { | |
1837 | xfs_fsop_counts_t out; | |
1838 | ||
1839 | error = xfs_fs_counts(mp, &out); | |
1840 | if (error) | |
2451337d | 1841 | return error; |
df26cfe8 LM |
1842 | |
1843 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1844 | return -EFAULT; |
df26cfe8 LM |
1845 | return 0; |
1846 | } | |
1847 | ||
1848 | case XFS_IOC_SET_RESBLKS: { | |
1849 | xfs_fsop_resblks_t inout; | |
1850 | __uint64_t in; | |
1851 | ||
1852 | if (!capable(CAP_SYS_ADMIN)) | |
1853 | return -EPERM; | |
1854 | ||
d5db0f97 | 1855 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
b474c7ae | 1856 | return -EROFS; |
d5db0f97 | 1857 | |
df26cfe8 | 1858 | if (copy_from_user(&inout, arg, sizeof(inout))) |
b474c7ae | 1859 | return -EFAULT; |
df26cfe8 | 1860 | |
d9457dc0 JK |
1861 | error = mnt_want_write_file(filp); |
1862 | if (error) | |
1863 | return error; | |
1864 | ||
df26cfe8 LM |
1865 | /* input parameter is passed in resblks field of structure */ |
1866 | in = inout.resblks; | |
1867 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1868 | mnt_drop_write_file(filp); |
df26cfe8 | 1869 | if (error) |
2451337d | 1870 | return error; |
df26cfe8 LM |
1871 | |
1872 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
b474c7ae | 1873 | return -EFAULT; |
df26cfe8 LM |
1874 | return 0; |
1875 | } | |
1876 | ||
1877 | case XFS_IOC_GET_RESBLKS: { | |
1878 | xfs_fsop_resblks_t out; | |
1879 | ||
1880 | if (!capable(CAP_SYS_ADMIN)) | |
1881 | return -EPERM; | |
1882 | ||
1883 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1884 | if (error) | |
2451337d | 1885 | return error; |
df26cfe8 LM |
1886 | |
1887 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1888 | return -EFAULT; |
df26cfe8 LM |
1889 | |
1890 | return 0; | |
1891 | } | |
1892 | ||
1893 | case XFS_IOC_FSGROWFSDATA: { | |
1894 | xfs_growfs_data_t in; | |
1895 | ||
df26cfe8 | 1896 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1897 | return -EFAULT; |
df26cfe8 | 1898 | |
d9457dc0 JK |
1899 | error = mnt_want_write_file(filp); |
1900 | if (error) | |
1901 | return error; | |
df26cfe8 | 1902 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1903 | mnt_drop_write_file(filp); |
2451337d | 1904 | return error; |
df26cfe8 LM |
1905 | } |
1906 | ||
1907 | case XFS_IOC_FSGROWFSLOG: { | |
1908 | xfs_growfs_log_t in; | |
1909 | ||
df26cfe8 | 1910 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1911 | return -EFAULT; |
df26cfe8 | 1912 | |
d9457dc0 JK |
1913 | error = mnt_want_write_file(filp); |
1914 | if (error) | |
1915 | return error; | |
df26cfe8 | 1916 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 1917 | mnt_drop_write_file(filp); |
2451337d | 1918 | return error; |
df26cfe8 LM |
1919 | } |
1920 | ||
1921 | case XFS_IOC_FSGROWFSRT: { | |
1922 | xfs_growfs_rt_t in; | |
1923 | ||
df26cfe8 | 1924 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1925 | return -EFAULT; |
df26cfe8 | 1926 | |
d9457dc0 JK |
1927 | error = mnt_want_write_file(filp); |
1928 | if (error) | |
1929 | return error; | |
df26cfe8 | 1930 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 1931 | mnt_drop_write_file(filp); |
2451337d | 1932 | return error; |
df26cfe8 LM |
1933 | } |
1934 | ||
df26cfe8 LM |
1935 | case XFS_IOC_GOINGDOWN: { |
1936 | __uint32_t in; | |
1937 | ||
1938 | if (!capable(CAP_SYS_ADMIN)) | |
1939 | return -EPERM; | |
1940 | ||
1941 | if (get_user(in, (__uint32_t __user *)arg)) | |
b474c7ae | 1942 | return -EFAULT; |
df26cfe8 | 1943 | |
2451337d | 1944 | return xfs_fs_goingdown(mp, in); |
df26cfe8 LM |
1945 | } |
1946 | ||
1947 | case XFS_IOC_ERROR_INJECTION: { | |
1948 | xfs_error_injection_t in; | |
1949 | ||
1950 | if (!capable(CAP_SYS_ADMIN)) | |
1951 | return -EPERM; | |
1952 | ||
1953 | if (copy_from_user(&in, arg, sizeof(in))) | |
b474c7ae | 1954 | return -EFAULT; |
df26cfe8 | 1955 | |
2451337d | 1956 | return xfs_errortag_add(in.errtag, mp); |
df26cfe8 LM |
1957 | } |
1958 | ||
1959 | case XFS_IOC_ERROR_CLEARALL: | |
1960 | if (!capable(CAP_SYS_ADMIN)) | |
1961 | return -EPERM; | |
1962 | ||
2451337d | 1963 | return xfs_errortag_clearall(mp, 1); |
df26cfe8 | 1964 | |
8ca149de | 1965 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
1966 | struct xfs_fs_eofblocks eofb; |
1967 | struct xfs_eofblocks keofb; | |
8ca149de | 1968 | |
8c567a7f DE |
1969 | if (!capable(CAP_SYS_ADMIN)) |
1970 | return -EPERM; | |
1971 | ||
1972 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 1973 | return -EROFS; |
8c567a7f | 1974 | |
8ca149de | 1975 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
b474c7ae | 1976 | return -EFAULT; |
8ca149de | 1977 | |
b9fe5052 DE |
1978 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
1979 | if (error) | |
2451337d | 1980 | return error; |
8ca149de | 1981 | |
2451337d | 1982 | return xfs_icache_free_eofblocks(mp, &keofb); |
8ca149de BF |
1983 | } |
1984 | ||
df26cfe8 LM |
1985 | default: |
1986 | return -ENOTTY; | |
1987 | } | |
1988 | } |