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