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Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
1da177e4 | 19 | #include "xfs_fs.h" |
70a9883c | 20 | #include "xfs_shared.h" |
239880ef DC |
21 | #include "xfs_format.h" |
22 | #include "xfs_log_format.h" | |
23 | #include "xfs_trans_resv.h" | |
1da177e4 | 24 | #include "xfs_mount.h" |
1da177e4 | 25 | #include "xfs_inode.h" |
7bf446f8 | 26 | #include "xfs_ioctl.h" |
a4fbe6ab | 27 | #include "xfs_alloc.h" |
1da177e4 | 28 | #include "xfs_rtalloc.h" |
1da177e4 | 29 | #include "xfs_itable.h" |
a844f451 | 30 | #include "xfs_error.h" |
1da177e4 | 31 | #include "xfs_attr.h" |
a844f451 | 32 | #include "xfs_bmap.h" |
68988114 | 33 | #include "xfs_bmap_util.h" |
1da177e4 | 34 | #include "xfs_fsops.h" |
a46db608 | 35 | #include "xfs_discard.h" |
25fe55e8 | 36 | #include "xfs_quota.h" |
d296d30a | 37 | #include "xfs_export.h" |
0b1b213f | 38 | #include "xfs_trace.h" |
8ca149de | 39 | #include "xfs_icache.h" |
c24b5dfa | 40 | #include "xfs_symlink.h" |
a4fbe6ab | 41 | #include "xfs_trans.h" |
781355c6 | 42 | #include "xfs_pnfs.h" |
47e1bf64 | 43 | #include "xfs_acl.h" |
e89c0413 DW |
44 | #include "xfs_btree.h" |
45 | #include <linux/fsmap.h> | |
46 | #include "xfs_fsmap.h" | |
1da177e4 | 47 | |
16f7e0fe | 48 | #include <linux/capability.h> |
5b825c3a | 49 | #include <linux/cred.h> |
1da177e4 LT |
50 | #include <linux/dcache.h> |
51 | #include <linux/mount.h> | |
52 | #include <linux/namei.h> | |
53 | #include <linux/pagemap.h> | |
5a0e3ad6 | 54 | #include <linux/slab.h> |
d296d30a | 55 | #include <linux/exportfs.h> |
1da177e4 LT |
56 | |
57 | /* | |
58 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
59 | * a file or fs handle. | |
60 | * | |
61 | * XFS_IOC_PATH_TO_FSHANDLE | |
62 | * returns fs handle for a mount point or path within that mount point | |
63 | * XFS_IOC_FD_TO_HANDLE | |
64 | * returns full handle for a FD opened in user space | |
65 | * XFS_IOC_PATH_TO_HANDLE | |
66 | * returns full handle for a path | |
67 | */ | |
d5547f9f | 68 | int |
1da177e4 LT |
69 | xfs_find_handle( |
70 | unsigned int cmd, | |
743bb465 | 71 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
72 | { |
73 | int hsize; | |
74 | xfs_handle_t handle; | |
1da177e4 | 75 | struct inode *inode; |
a30b0367 | 76 | struct fd f = {NULL}; |
4346cdd4 | 77 | struct path path; |
2903ff01 | 78 | int error; |
4346cdd4 | 79 | struct xfs_inode *ip; |
1da177e4 | 80 | |
4346cdd4 | 81 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
82 | f = fdget(hreq->fd); |
83 | if (!f.file) | |
4346cdd4 | 84 | return -EBADF; |
496ad9aa | 85 | inode = file_inode(f.file); |
4346cdd4 CH |
86 | } else { |
87 | error = user_lpath((const char __user *)hreq->path, &path); | |
88 | if (error) | |
89 | return error; | |
2b0143b5 | 90 | inode = d_inode(path.dentry); |
1da177e4 | 91 | } |
4346cdd4 CH |
92 | ip = XFS_I(inode); |
93 | ||
94 | /* | |
95 | * We can only generate handles for inodes residing on a XFS filesystem, | |
96 | * and only for regular files, directories or symbolic links. | |
97 | */ | |
98 | error = -EINVAL; | |
99 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
100 | goto out_put; | |
101 | ||
102 | error = -EBADF; | |
103 | if (!S_ISREG(inode->i_mode) && | |
104 | !S_ISDIR(inode->i_mode) && | |
105 | !S_ISLNK(inode->i_mode)) | |
106 | goto out_put; | |
107 | ||
108 | ||
109 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
110 | ||
111 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
112 | /* | |
113 | * This handle only contains an fsid, zero the rest. | |
114 | */ | |
115 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
116 | hsize = sizeof(xfs_fsid_t); | |
117 | } else { | |
c6143911 CH |
118 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
119 | sizeof(handle.ha_fid.fid_len); | |
120 | handle.ha_fid.fid_pad = 0; | |
9e9a2674 | 121 | handle.ha_fid.fid_gen = inode->i_generation; |
c6143911 | 122 | handle.ha_fid.fid_ino = ip->i_ino; |
1da177e4 LT |
123 | |
124 | hsize = XFS_HSIZE(handle); | |
125 | } | |
126 | ||
4346cdd4 | 127 | error = -EFAULT; |
743bb465 | 128 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
129 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
130 | goto out_put; | |
1da177e4 | 131 | |
4346cdd4 CH |
132 | error = 0; |
133 | ||
134 | out_put: | |
135 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 136 | fdput(f); |
4346cdd4 CH |
137 | else |
138 | path_put(&path); | |
139 | return error; | |
1da177e4 LT |
140 | } |
141 | ||
1da177e4 | 142 | /* |
d296d30a CH |
143 | * No need to do permission checks on the various pathname components |
144 | * as the handle operations are privileged. | |
1da177e4 LT |
145 | */ |
146 | STATIC int | |
d296d30a CH |
147 | xfs_handle_acceptable( |
148 | void *context, | |
149 | struct dentry *dentry) | |
150 | { | |
151 | return 1; | |
152 | } | |
153 | ||
154 | /* | |
155 | * Convert userspace handle data into a dentry. | |
156 | */ | |
157 | struct dentry * | |
158 | xfs_handle_to_dentry( | |
159 | struct file *parfilp, | |
160 | void __user *uhandle, | |
161 | u32 hlen) | |
1da177e4 | 162 | { |
1da177e4 | 163 | xfs_handle_t handle; |
d296d30a | 164 | struct xfs_fid64 fid; |
1da177e4 LT |
165 | |
166 | /* | |
167 | * Only allow handle opens under a directory. | |
168 | */ | |
496ad9aa | 169 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
170 | return ERR_PTR(-ENOTDIR); |
171 | ||
172 | if (hlen != sizeof(xfs_handle_t)) | |
173 | return ERR_PTR(-EINVAL); | |
174 | if (copy_from_user(&handle, uhandle, hlen)) | |
175 | return ERR_PTR(-EFAULT); | |
176 | if (handle.ha_fid.fid_len != | |
177 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
178 | return ERR_PTR(-EINVAL); | |
179 | ||
180 | memset(&fid, 0, sizeof(struct fid)); | |
181 | fid.ino = handle.ha_fid.fid_ino; | |
182 | fid.gen = handle.ha_fid.fid_gen; | |
183 | ||
184 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
185 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
186 | xfs_handle_acceptable, NULL); | |
187 | } | |
1da177e4 | 188 | |
d296d30a CH |
189 | STATIC struct dentry * |
190 | xfs_handlereq_to_dentry( | |
191 | struct file *parfilp, | |
192 | xfs_fsop_handlereq_t *hreq) | |
193 | { | |
194 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
195 | } |
196 | ||
d5547f9f | 197 | int |
1da177e4 | 198 | xfs_open_by_handle( |
1da177e4 | 199 | struct file *parfilp, |
d296d30a | 200 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 201 | { |
745ca247 | 202 | const struct cred *cred = current_cred(); |
1da177e4 | 203 | int error; |
d296d30a | 204 | int fd; |
1da177e4 LT |
205 | int permflag; |
206 | struct file *filp; | |
207 | struct inode *inode; | |
208 | struct dentry *dentry; | |
1a1d7724 | 209 | fmode_t fmode; |
765927b2 | 210 | struct path path; |
1da177e4 LT |
211 | |
212 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 213 | return -EPERM; |
1da177e4 | 214 | |
d296d30a CH |
215 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
216 | if (IS_ERR(dentry)) | |
217 | return PTR_ERR(dentry); | |
2b0143b5 | 218 | inode = d_inode(dentry); |
1da177e4 LT |
219 | |
220 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
221 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
b474c7ae | 222 | error = -EPERM; |
d296d30a | 223 | goto out_dput; |
1da177e4 LT |
224 | } |
225 | ||
226 | #if BITS_PER_LONG != 32 | |
743bb465 | 227 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 228 | #endif |
d296d30a | 229 | |
743bb465 | 230 | permflag = hreq->oflags; |
1a1d7724 | 231 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 232 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 233 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
b474c7ae | 234 | error = -EPERM; |
d296d30a | 235 | goto out_dput; |
1da177e4 LT |
236 | } |
237 | ||
1a1d7724 | 238 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
337684a1 | 239 | error = -EPERM; |
d296d30a | 240 | goto out_dput; |
1da177e4 LT |
241 | } |
242 | ||
243 | /* Can't write directories. */ | |
1a1d7724 | 244 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
b474c7ae | 245 | error = -EISDIR; |
d296d30a | 246 | goto out_dput; |
1da177e4 LT |
247 | } |
248 | ||
862a6293 | 249 | fd = get_unused_fd_flags(0); |
d296d30a CH |
250 | if (fd < 0) { |
251 | error = fd; | |
252 | goto out_dput; | |
1da177e4 LT |
253 | } |
254 | ||
765927b2 AV |
255 | path.mnt = parfilp->f_path.mnt; |
256 | path.dentry = dentry; | |
257 | filp = dentry_open(&path, hreq->oflags, cred); | |
258 | dput(dentry); | |
1da177e4 | 259 | if (IS_ERR(filp)) { |
d296d30a CH |
260 | put_unused_fd(fd); |
261 | return PTR_ERR(filp); | |
1da177e4 | 262 | } |
4d4be482 | 263 | |
03209378 | 264 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 265 | filp->f_flags |= O_NOATIME; |
4d4be482 | 266 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 267 | } |
1da177e4 | 268 | |
d296d30a CH |
269 | fd_install(fd, filp); |
270 | return fd; | |
271 | ||
272 | out_dput: | |
273 | dput(dentry); | |
274 | return error; | |
1da177e4 LT |
275 | } |
276 | ||
d5547f9f | 277 | int |
1da177e4 | 278 | xfs_readlink_by_handle( |
d296d30a CH |
279 | struct file *parfilp, |
280 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 281 | { |
d296d30a | 282 | struct dentry *dentry; |
1da177e4 | 283 | __u32 olen; |
804c83c3 | 284 | int error; |
1da177e4 LT |
285 | |
286 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 287 | return -EPERM; |
1da177e4 | 288 | |
d296d30a CH |
289 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
290 | if (IS_ERR(dentry)) | |
291 | return PTR_ERR(dentry); | |
1da177e4 LT |
292 | |
293 | /* Restrict this handle operation to symlinks only. */ | |
fd4a0edf | 294 | if (!d_is_symlink(dentry)) { |
b474c7ae | 295 | error = -EINVAL; |
d296d30a | 296 | goto out_dput; |
1da177e4 LT |
297 | } |
298 | ||
743bb465 | 299 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
b474c7ae | 300 | error = -EFAULT; |
d296d30a | 301 | goto out_dput; |
1da177e4 | 302 | } |
1da177e4 | 303 | |
fd4a0edf | 304 | error = vfs_readlink(dentry, hreq->ohandle, olen); |
67fcaa73 | 305 | |
d296d30a CH |
306 | out_dput: |
307 | dput(dentry); | |
804c83c3 | 308 | return error; |
1da177e4 LT |
309 | } |
310 | ||
c24b5dfa DC |
311 | int |
312 | xfs_set_dmattrs( | |
313 | xfs_inode_t *ip, | |
314 | u_int evmask, | |
315 | u_int16_t state) | |
316 | { | |
317 | xfs_mount_t *mp = ip->i_mount; | |
318 | xfs_trans_t *tp; | |
319 | int error; | |
320 | ||
321 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 322 | return -EPERM; |
c24b5dfa DC |
323 | |
324 | if (XFS_FORCED_SHUTDOWN(mp)) | |
2451337d | 325 | return -EIO; |
c24b5dfa | 326 | |
253f4911 CH |
327 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp); |
328 | if (error) | |
c24b5dfa | 329 | return error; |
253f4911 | 330 | |
c24b5dfa DC |
331 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
332 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
333 | ||
334 | ip->i_d.di_dmevmask = evmask; | |
335 | ip->i_d.di_dmstate = state; | |
336 | ||
337 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
70393313 | 338 | error = xfs_trans_commit(tp); |
c24b5dfa DC |
339 | |
340 | return error; | |
341 | } | |
342 | ||
1da177e4 LT |
343 | STATIC int |
344 | xfs_fssetdm_by_handle( | |
d296d30a CH |
345 | struct file *parfilp, |
346 | void __user *arg) | |
1da177e4 LT |
347 | { |
348 | int error; | |
349 | struct fsdmidata fsd; | |
350 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 351 | struct dentry *dentry; |
1da177e4 LT |
352 | |
353 | if (!capable(CAP_MKNOD)) | |
b474c7ae | 354 | return -EPERM; |
1da177e4 | 355 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) |
b474c7ae | 356 | return -EFAULT; |
1da177e4 | 357 | |
d9457dc0 JK |
358 | error = mnt_want_write_file(parfilp); |
359 | if (error) | |
360 | return error; | |
361 | ||
d296d30a | 362 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
363 | if (IS_ERR(dentry)) { |
364 | mnt_drop_write_file(parfilp); | |
d296d30a | 365 | return PTR_ERR(dentry); |
d9457dc0 | 366 | } |
1da177e4 | 367 | |
2b0143b5 | 368 | if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) { |
b474c7ae | 369 | error = -EPERM; |
6e7f75ea | 370 | goto out; |
1da177e4 LT |
371 | } |
372 | ||
373 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
b474c7ae | 374 | error = -EFAULT; |
6e7f75ea | 375 | goto out; |
1da177e4 LT |
376 | } |
377 | ||
2b0143b5 | 378 | error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask, |
6e7f75ea | 379 | fsd.fsd_dmstate); |
1da177e4 | 380 | |
6e7f75ea | 381 | out: |
d9457dc0 | 382 | mnt_drop_write_file(parfilp); |
d296d30a | 383 | dput(dentry); |
6e7f75ea | 384 | return error; |
1da177e4 LT |
385 | } |
386 | ||
387 | STATIC int | |
388 | xfs_attrlist_by_handle( | |
d296d30a CH |
389 | struct file *parfilp, |
390 | void __user *arg) | |
1da177e4 | 391 | { |
d296d30a | 392 | int error = -ENOMEM; |
1da177e4 | 393 | attrlist_cursor_kern_t *cursor; |
0facef7f | 394 | struct xfs_fsop_attrlist_handlereq __user *p = arg; |
1da177e4 | 395 | xfs_fsop_attrlist_handlereq_t al_hreq; |
d296d30a | 396 | struct dentry *dentry; |
1da177e4 LT |
397 | char *kbuf; |
398 | ||
399 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 400 | return -EPERM; |
1da177e4 | 401 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) |
b474c7ae | 402 | return -EFAULT; |
071c529e | 403 | if (al_hreq.buflen < sizeof(struct attrlist) || |
4e247614 | 404 | al_hreq.buflen > XFS_XATTR_LIST_MAX) |
b474c7ae | 405 | return -EINVAL; |
1da177e4 | 406 | |
90ad58a8 CH |
407 | /* |
408 | * Reject flags, only allow namespaces. | |
409 | */ | |
410 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
b474c7ae | 411 | return -EINVAL; |
90ad58a8 | 412 | |
d296d30a CH |
413 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
414 | if (IS_ERR(dentry)) | |
415 | return PTR_ERR(dentry); | |
1da177e4 | 416 | |
fdd3ccee DC |
417 | kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); |
418 | if (!kbuf) | |
419 | goto out_dput; | |
1da177e4 LT |
420 | |
421 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
2b0143b5 | 422 | error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen, |
739bfb2a | 423 | al_hreq.flags, cursor); |
1da177e4 LT |
424 | if (error) |
425 | goto out_kfree; | |
426 | ||
0facef7f DW |
427 | if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) { |
428 | error = -EFAULT; | |
429 | goto out_kfree; | |
430 | } | |
431 | ||
1da177e4 LT |
432 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) |
433 | error = -EFAULT; | |
434 | ||
fdd3ccee DC |
435 | out_kfree: |
436 | kmem_free(kbuf); | |
437 | out_dput: | |
d296d30a CH |
438 | dput(dentry); |
439 | return error; | |
1da177e4 LT |
440 | } |
441 | ||
28750975 | 442 | int |
1da177e4 | 443 | xfs_attrmulti_attr_get( |
739bfb2a | 444 | struct inode *inode, |
a9273ca5 DC |
445 | unsigned char *name, |
446 | unsigned char __user *ubuf, | |
1da177e4 LT |
447 | __uint32_t *len, |
448 | __uint32_t flags) | |
449 | { | |
a9273ca5 | 450 | unsigned char *kbuf; |
2451337d | 451 | int error = -EFAULT; |
e8b0ebaa | 452 | |
51fcbfe7 | 453 | if (*len > XFS_XATTR_SIZE_MAX) |
2451337d | 454 | return -EINVAL; |
fdd3ccee DC |
455 | kbuf = kmem_zalloc_large(*len, KM_SLEEP); |
456 | if (!kbuf) | |
2451337d | 457 | return -ENOMEM; |
1da177e4 | 458 | |
e8b0ebaa | 459 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
460 | if (error) |
461 | goto out_kfree; | |
462 | ||
463 | if (copy_to_user(ubuf, kbuf, *len)) | |
2451337d | 464 | error = -EFAULT; |
1da177e4 | 465 | |
fdd3ccee DC |
466 | out_kfree: |
467 | kmem_free(kbuf); | |
1da177e4 LT |
468 | return error; |
469 | } | |
470 | ||
28750975 | 471 | int |
1da177e4 | 472 | xfs_attrmulti_attr_set( |
739bfb2a | 473 | struct inode *inode, |
a9273ca5 DC |
474 | unsigned char *name, |
475 | const unsigned char __user *ubuf, | |
1da177e4 LT |
476 | __uint32_t len, |
477 | __uint32_t flags) | |
478 | { | |
a9273ca5 | 479 | unsigned char *kbuf; |
09cb22d2 | 480 | int error; |
1da177e4 | 481 | |
739bfb2a | 482 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 483 | return -EPERM; |
51fcbfe7 | 484 | if (len > XFS_XATTR_SIZE_MAX) |
2451337d | 485 | return -EINVAL; |
1da177e4 | 486 | |
0e639bde LZ |
487 | kbuf = memdup_user(ubuf, len); |
488 | if (IS_ERR(kbuf)) | |
489 | return PTR_ERR(kbuf); | |
e8b0ebaa | 490 | |
09cb22d2 | 491 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
47e1bf64 AG |
492 | if (!error) |
493 | xfs_forget_acl(inode, name, flags); | |
09cb22d2 AG |
494 | kfree(kbuf); |
495 | return error; | |
1da177e4 LT |
496 | } |
497 | ||
28750975 | 498 | int |
1da177e4 | 499 | xfs_attrmulti_attr_remove( |
739bfb2a | 500 | struct inode *inode, |
a9273ca5 | 501 | unsigned char *name, |
1da177e4 LT |
502 | __uint32_t flags) |
503 | { | |
47e1bf64 AG |
504 | int error; |
505 | ||
739bfb2a | 506 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 507 | return -EPERM; |
47e1bf64 AG |
508 | error = xfs_attr_remove(XFS_I(inode), name, flags); |
509 | if (!error) | |
510 | xfs_forget_acl(inode, name, flags); | |
511 | return error; | |
1da177e4 LT |
512 | } |
513 | ||
514 | STATIC int | |
515 | xfs_attrmulti_by_handle( | |
42a74f20 | 516 | struct file *parfilp, |
d296d30a | 517 | void __user *arg) |
1da177e4 LT |
518 | { |
519 | int error; | |
520 | xfs_attr_multiop_t *ops; | |
521 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 522 | struct dentry *dentry; |
1da177e4 | 523 | unsigned int i, size; |
a9273ca5 | 524 | unsigned char *attr_name; |
1da177e4 LT |
525 | |
526 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 527 | return -EPERM; |
1da177e4 | 528 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
b474c7ae | 529 | return -EFAULT; |
1da177e4 | 530 | |
fda168c2 ZW |
531 | /* overflow check */ |
532 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
533 | return -E2BIG; | |
534 | ||
d296d30a CH |
535 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
536 | if (IS_ERR(dentry)) | |
537 | return PTR_ERR(dentry); | |
1da177e4 | 538 | |
2451337d | 539 | error = -E2BIG; |
e182f57a | 540 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 541 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 542 | goto out_dput; |
1da177e4 | 543 | |
0e639bde LZ |
544 | ops = memdup_user(am_hreq.ops, size); |
545 | if (IS_ERR(ops)) { | |
2451337d | 546 | error = PTR_ERR(ops); |
d296d30a | 547 | goto out_dput; |
0e639bde | 548 | } |
1da177e4 | 549 | |
2451337d | 550 | error = -ENOMEM; |
1da177e4 LT |
551 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
552 | if (!attr_name) | |
553 | goto out_kfree_ops; | |
554 | ||
1da177e4 LT |
555 | error = 0; |
556 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 557 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
558 | ops[i].am_attrname, MAXNAMELEN); |
559 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
2451337d | 560 | error = -ERANGE; |
1da177e4 LT |
561 | if (ops[i].am_error < 0) |
562 | break; | |
563 | ||
564 | switch (ops[i].am_opcode) { | |
565 | case ATTR_OP_GET: | |
d296d30a | 566 | ops[i].am_error = xfs_attrmulti_attr_get( |
2b0143b5 | 567 | d_inode(dentry), attr_name, |
d296d30a CH |
568 | ops[i].am_attrvalue, &ops[i].am_length, |
569 | ops[i].am_flags); | |
1da177e4 LT |
570 | break; |
571 | case ATTR_OP_SET: | |
a561be71 | 572 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
573 | if (ops[i].am_error) |
574 | break; | |
d296d30a | 575 | ops[i].am_error = xfs_attrmulti_attr_set( |
2b0143b5 | 576 | d_inode(dentry), attr_name, |
d296d30a CH |
577 | ops[i].am_attrvalue, ops[i].am_length, |
578 | ops[i].am_flags); | |
2a79f17e | 579 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
580 | break; |
581 | case ATTR_OP_REMOVE: | |
a561be71 | 582 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
583 | if (ops[i].am_error) |
584 | break; | |
d296d30a | 585 | ops[i].am_error = xfs_attrmulti_attr_remove( |
2b0143b5 | 586 | d_inode(dentry), attr_name, |
d296d30a | 587 | ops[i].am_flags); |
2a79f17e | 588 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
589 | break; |
590 | default: | |
2451337d | 591 | ops[i].am_error = -EINVAL; |
1da177e4 LT |
592 | } |
593 | } | |
594 | ||
595 | if (copy_to_user(am_hreq.ops, ops, size)) | |
2451337d | 596 | error = -EFAULT; |
1da177e4 LT |
597 | |
598 | kfree(attr_name); | |
599 | out_kfree_ops: | |
600 | kfree(ops); | |
d296d30a CH |
601 | out_dput: |
602 | dput(dentry); | |
2451337d | 603 | return error; |
1da177e4 LT |
604 | } |
605 | ||
d5547f9f | 606 | int |
1da177e4 | 607 | xfs_ioc_space( |
1da177e4 | 608 | struct file *filp, |
1da177e4 | 609 | unsigned int cmd, |
743bb465 | 610 | xfs_flock64_t *bf) |
1da177e4 | 611 | { |
8f3e2058 CH |
612 | struct inode *inode = file_inode(filp); |
613 | struct xfs_inode *ip = XFS_I(inode); | |
865e9446 | 614 | struct iattr iattr; |
8add71ca | 615 | enum xfs_prealloc_flags flags = 0; |
781355c6 | 616 | uint iolock = XFS_IOLOCK_EXCL; |
1da177e4 LT |
617 | int error; |
618 | ||
743bb465 | 619 | /* |
620 | * Only allow the sys admin to reserve space unless | |
621 | * unwritten extents are enabled. | |
622 | */ | |
623 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
624 | !capable(CAP_SYS_ADMIN)) | |
b474c7ae | 625 | return -EPERM; |
743bb465 | 626 | |
f37ea149 | 627 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
b474c7ae | 628 | return -EPERM; |
1da177e4 | 629 | |
ad4a8ac4 | 630 | if (!(filp->f_mode & FMODE_WRITE)) |
b474c7ae | 631 | return -EBADF; |
1da177e4 | 632 | |
f37ea149 | 633 | if (!S_ISREG(inode->i_mode)) |
b474c7ae | 634 | return -EINVAL; |
1da177e4 | 635 | |
8add71ca CH |
636 | if (filp->f_flags & O_DSYNC) |
637 | flags |= XFS_PREALLOC_SYNC; | |
8f3e2058 | 638 | if (filp->f_mode & FMODE_NOCMTIME) |
8add71ca CH |
639 | flags |= XFS_PREALLOC_INVISIBLE; |
640 | ||
d9457dc0 JK |
641 | error = mnt_want_write_file(filp); |
642 | if (error) | |
643 | return error; | |
865e9446 | 644 | |
781355c6 | 645 | xfs_ilock(ip, iolock); |
65523218 | 646 | error = xfs_break_layouts(inode, &iolock); |
781355c6 CH |
647 | if (error) |
648 | goto out_unlock; | |
865e9446 | 649 | |
e8e9ad42 DC |
650 | xfs_ilock(ip, XFS_MMAPLOCK_EXCL); |
651 | iolock |= XFS_MMAPLOCK_EXCL; | |
652 | ||
865e9446 CH |
653 | switch (bf->l_whence) { |
654 | case 0: /*SEEK_SET*/ | |
655 | break; | |
656 | case 1: /*SEEK_CUR*/ | |
657 | bf->l_start += filp->f_pos; | |
658 | break; | |
659 | case 2: /*SEEK_END*/ | |
660 | bf->l_start += XFS_ISIZE(ip); | |
661 | break; | |
662 | default: | |
2451337d | 663 | error = -EINVAL; |
865e9446 CH |
664 | goto out_unlock; |
665 | } | |
666 | ||
667 | /* | |
668 | * length of <= 0 for resv/unresv/zero is invalid. length for | |
669 | * alloc/free is ignored completely and we have no idea what userspace | |
670 | * might have set it to, so set it to zero to allow range | |
671 | * checks to pass. | |
672 | */ | |
673 | switch (cmd) { | |
674 | case XFS_IOC_ZERO_RANGE: | |
675 | case XFS_IOC_RESVSP: | |
676 | case XFS_IOC_RESVSP64: | |
677 | case XFS_IOC_UNRESVSP: | |
678 | case XFS_IOC_UNRESVSP64: | |
679 | if (bf->l_len <= 0) { | |
2451337d | 680 | error = -EINVAL; |
865e9446 CH |
681 | goto out_unlock; |
682 | } | |
683 | break; | |
684 | default: | |
685 | bf->l_len = 0; | |
686 | break; | |
687 | } | |
688 | ||
689 | if (bf->l_start < 0 || | |
8add71ca | 690 | bf->l_start > inode->i_sb->s_maxbytes || |
865e9446 | 691 | bf->l_start + bf->l_len < 0 || |
8add71ca | 692 | bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) { |
2451337d | 693 | error = -EINVAL; |
865e9446 CH |
694 | goto out_unlock; |
695 | } | |
696 | ||
697 | switch (cmd) { | |
698 | case XFS_IOC_ZERO_RANGE: | |
8add71ca | 699 | flags |= XFS_PREALLOC_SET; |
865e9446 | 700 | error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); |
865e9446 CH |
701 | break; |
702 | case XFS_IOC_RESVSP: | |
703 | case XFS_IOC_RESVSP64: | |
8add71ca | 704 | flags |= XFS_PREALLOC_SET; |
865e9446 CH |
705 | error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, |
706 | XFS_BMAPI_PREALLOC); | |
865e9446 CH |
707 | break; |
708 | case XFS_IOC_UNRESVSP: | |
709 | case XFS_IOC_UNRESVSP64: | |
710 | error = xfs_free_file_space(ip, bf->l_start, bf->l_len); | |
711 | break; | |
712 | case XFS_IOC_ALLOCSP: | |
713 | case XFS_IOC_ALLOCSP64: | |
714 | case XFS_IOC_FREESP: | |
715 | case XFS_IOC_FREESP64: | |
8add71ca | 716 | flags |= XFS_PREALLOC_CLEAR; |
865e9446 CH |
717 | if (bf->l_start > XFS_ISIZE(ip)) { |
718 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), | |
719 | bf->l_start - XFS_ISIZE(ip), 0); | |
720 | if (error) | |
721 | goto out_unlock; | |
722 | } | |
723 | ||
724 | iattr.ia_valid = ATTR_SIZE; | |
725 | iattr.ia_size = bf->l_start; | |
726 | ||
69bca807 | 727 | error = xfs_vn_setattr_size(file_dentry(filp), &iattr); |
865e9446 CH |
728 | break; |
729 | default: | |
730 | ASSERT(0); | |
2451337d | 731 | error = -EINVAL; |
865e9446 CH |
732 | } |
733 | ||
734 | if (error) | |
735 | goto out_unlock; | |
736 | ||
8add71ca | 737 | error = xfs_update_prealloc_flags(ip, flags); |
865e9446 CH |
738 | |
739 | out_unlock: | |
781355c6 | 740 | xfs_iunlock(ip, iolock); |
d9457dc0 | 741 | mnt_drop_write_file(filp); |
2451337d | 742 | return error; |
1da177e4 LT |
743 | } |
744 | ||
745 | STATIC int | |
746 | xfs_ioc_bulkstat( | |
747 | xfs_mount_t *mp, | |
748 | unsigned int cmd, | |
749 | void __user *arg) | |
750 | { | |
751 | xfs_fsop_bulkreq_t bulkreq; | |
752 | int count; /* # of records returned */ | |
753 | xfs_ino_t inlast; /* last inode number */ | |
754 | int done; | |
755 | int error; | |
756 | ||
757 | /* done = 1 if there are more stats to get and if bulkstat */ | |
758 | /* should be called again (unused here, but used in dmapi) */ | |
759 | ||
760 | if (!capable(CAP_SYS_ADMIN)) | |
761 | return -EPERM; | |
762 | ||
763 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 764 | return -EIO; |
1da177e4 LT |
765 | |
766 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
b474c7ae | 767 | return -EFAULT; |
1da177e4 LT |
768 | |
769 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
b474c7ae | 770 | return -EFAULT; |
1da177e4 LT |
771 | |
772 | if ((count = bulkreq.icount) <= 0) | |
b474c7ae | 773 | return -EINVAL; |
1da177e4 | 774 | |
cd57e594 | 775 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 776 | return -EINVAL; |
cd57e594 | 777 | |
1da177e4 LT |
778 | if (cmd == XFS_IOC_FSINUMBERS) |
779 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 780 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 | 781 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
d716f8ee CH |
782 | error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer, |
783 | sizeof(xfs_bstat_t), NULL, &done); | |
cd57e594 | 784 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
785 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
786 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
787 | &done); | |
1da177e4 LT |
788 | |
789 | if (error) | |
2451337d | 790 | return error; |
1da177e4 LT |
791 | |
792 | if (bulkreq.ocount != NULL) { | |
793 | if (copy_to_user(bulkreq.lastip, &inlast, | |
794 | sizeof(xfs_ino_t))) | |
b474c7ae | 795 | return -EFAULT; |
1da177e4 LT |
796 | |
797 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
b474c7ae | 798 | return -EFAULT; |
1da177e4 LT |
799 | } |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
804 | STATIC int | |
805 | xfs_ioc_fsgeometry_v1( | |
806 | xfs_mount_t *mp, | |
807 | void __user *arg) | |
808 | { | |
eeb2036b | 809 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
810 | int error; |
811 | ||
eeb2036b | 812 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 | 813 | if (error) |
2451337d | 814 | return error; |
1da177e4 | 815 | |
eeb2036b AE |
816 | /* |
817 | * Caller should have passed an argument of type | |
818 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
819 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
820 | */ | |
821 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
b474c7ae | 822 | return -EFAULT; |
1da177e4 LT |
823 | return 0; |
824 | } | |
825 | ||
826 | STATIC int | |
827 | xfs_ioc_fsgeometry( | |
828 | xfs_mount_t *mp, | |
829 | void __user *arg) | |
830 | { | |
831 | xfs_fsop_geom_t fsgeo; | |
832 | int error; | |
833 | ||
834 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
835 | if (error) | |
2451337d | 836 | return error; |
1da177e4 LT |
837 | |
838 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
b474c7ae | 839 | return -EFAULT; |
1da177e4 LT |
840 | return 0; |
841 | } | |
842 | ||
843 | /* | |
844 | * Linux extended inode flags interface. | |
845 | */ | |
1da177e4 LT |
846 | |
847 | STATIC unsigned int | |
848 | xfs_merge_ioc_xflags( | |
849 | unsigned int flags, | |
850 | unsigned int start) | |
851 | { | |
852 | unsigned int xflags = start; | |
853 | ||
39058a0e | 854 | if (flags & FS_IMMUTABLE_FL) |
e7b89481 | 855 | xflags |= FS_XFLAG_IMMUTABLE; |
1da177e4 | 856 | else |
e7b89481 | 857 | xflags &= ~FS_XFLAG_IMMUTABLE; |
39058a0e | 858 | if (flags & FS_APPEND_FL) |
e7b89481 | 859 | xflags |= FS_XFLAG_APPEND; |
1da177e4 | 860 | else |
e7b89481 | 861 | xflags &= ~FS_XFLAG_APPEND; |
39058a0e | 862 | if (flags & FS_SYNC_FL) |
e7b89481 | 863 | xflags |= FS_XFLAG_SYNC; |
1da177e4 | 864 | else |
e7b89481 | 865 | xflags &= ~FS_XFLAG_SYNC; |
39058a0e | 866 | if (flags & FS_NOATIME_FL) |
e7b89481 | 867 | xflags |= FS_XFLAG_NOATIME; |
1da177e4 | 868 | else |
e7b89481 | 869 | xflags &= ~FS_XFLAG_NOATIME; |
39058a0e | 870 | if (flags & FS_NODUMP_FL) |
e7b89481 | 871 | xflags |= FS_XFLAG_NODUMP; |
1da177e4 | 872 | else |
e7b89481 | 873 | xflags &= ~FS_XFLAG_NODUMP; |
1da177e4 LT |
874 | |
875 | return xflags; | |
876 | } | |
877 | ||
878 | STATIC unsigned int | |
879 | xfs_di2lxflags( | |
880 | __uint16_t di_flags) | |
881 | { | |
882 | unsigned int flags = 0; | |
883 | ||
884 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 885 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 886 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 887 | flags |= FS_APPEND_FL; |
1da177e4 | 888 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 889 | flags |= FS_SYNC_FL; |
1da177e4 | 890 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 891 | flags |= FS_NOATIME_FL; |
1da177e4 | 892 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 893 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
894 | return flags; |
895 | } | |
896 | ||
c83bfab1 CH |
897 | STATIC int |
898 | xfs_ioc_fsgetxattr( | |
899 | xfs_inode_t *ip, | |
900 | int attr, | |
901 | void __user *arg) | |
902 | { | |
903 | struct fsxattr fa; | |
904 | ||
a122eb2f DR |
905 | memset(&fa, 0, sizeof(struct fsxattr)); |
906 | ||
c83bfab1 CH |
907 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
908 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
909 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
f7ca3522 DW |
910 | fa.fsx_cowextsize = ip->i_d.di_cowextsize << |
911 | ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 912 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
913 | |
914 | if (attr) { | |
915 | if (ip->i_afp) { | |
916 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
5d829300 | 917 | fa.fsx_nextents = xfs_iext_count(ip->i_afp); |
c83bfab1 CH |
918 | else |
919 | fa.fsx_nextents = ip->i_d.di_anextents; | |
920 | } else | |
921 | fa.fsx_nextents = 0; | |
922 | } else { | |
923 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
5d829300 | 924 | fa.fsx_nextents = xfs_iext_count(&ip->i_df); |
c83bfab1 CH |
925 | else |
926 | fa.fsx_nextents = ip->i_d.di_nextents; | |
927 | } | |
928 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
929 | ||
930 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
931 | return -EFAULT; | |
932 | return 0; | |
933 | } | |
934 | ||
25fe55e8 CH |
935 | STATIC void |
936 | xfs_set_diflags( | |
937 | struct xfs_inode *ip, | |
938 | unsigned int xflags) | |
939 | { | |
940 | unsigned int di_flags; | |
58f88ca2 | 941 | uint64_t di_flags2; |
25fe55e8 CH |
942 | |
943 | /* can't set PREALLOC this way, just preserve it */ | |
944 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
e7b89481 | 945 | if (xflags & FS_XFLAG_IMMUTABLE) |
25fe55e8 | 946 | di_flags |= XFS_DIFLAG_IMMUTABLE; |
e7b89481 | 947 | if (xflags & FS_XFLAG_APPEND) |
25fe55e8 | 948 | di_flags |= XFS_DIFLAG_APPEND; |
e7b89481 | 949 | if (xflags & FS_XFLAG_SYNC) |
25fe55e8 | 950 | di_flags |= XFS_DIFLAG_SYNC; |
e7b89481 | 951 | if (xflags & FS_XFLAG_NOATIME) |
25fe55e8 | 952 | di_flags |= XFS_DIFLAG_NOATIME; |
e7b89481 | 953 | if (xflags & FS_XFLAG_NODUMP) |
25fe55e8 | 954 | di_flags |= XFS_DIFLAG_NODUMP; |
e7b89481 | 955 | if (xflags & FS_XFLAG_NODEFRAG) |
25fe55e8 | 956 | di_flags |= XFS_DIFLAG_NODEFRAG; |
e7b89481 | 957 | if (xflags & FS_XFLAG_FILESTREAM) |
25fe55e8 | 958 | di_flags |= XFS_DIFLAG_FILESTREAM; |
c19b3b05 | 959 | if (S_ISDIR(VFS_I(ip)->i_mode)) { |
e7b89481 | 960 | if (xflags & FS_XFLAG_RTINHERIT) |
25fe55e8 | 961 | di_flags |= XFS_DIFLAG_RTINHERIT; |
e7b89481 | 962 | if (xflags & FS_XFLAG_NOSYMLINKS) |
25fe55e8 | 963 | di_flags |= XFS_DIFLAG_NOSYMLINKS; |
e7b89481 | 964 | if (xflags & FS_XFLAG_EXTSZINHERIT) |
25fe55e8 | 965 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; |
e7b89481 | 966 | if (xflags & FS_XFLAG_PROJINHERIT) |
9336e3a7 | 967 | di_flags |= XFS_DIFLAG_PROJINHERIT; |
c19b3b05 | 968 | } else if (S_ISREG(VFS_I(ip)->i_mode)) { |
e7b89481 | 969 | if (xflags & FS_XFLAG_REALTIME) |
25fe55e8 | 970 | di_flags |= XFS_DIFLAG_REALTIME; |
e7b89481 | 971 | if (xflags & FS_XFLAG_EXTSIZE) |
25fe55e8 CH |
972 | di_flags |= XFS_DIFLAG_EXTSIZE; |
973 | } | |
25fe55e8 | 974 | ip->i_d.di_flags = di_flags; |
58f88ca2 DC |
975 | |
976 | /* diflags2 only valid for v3 inodes. */ | |
977 | if (ip->i_d.di_version < 3) | |
978 | return; | |
979 | ||
f7ca3522 | 980 | di_flags2 = (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK); |
58f88ca2 DC |
981 | if (xflags & FS_XFLAG_DAX) |
982 | di_flags2 |= XFS_DIFLAG2_DAX; | |
f7ca3522 DW |
983 | if (xflags & FS_XFLAG_COWEXTSIZE) |
984 | di_flags2 |= XFS_DIFLAG2_COWEXTSIZE; | |
58f88ca2 DC |
985 | |
986 | ip->i_d.di_flags2 = di_flags2; | |
25fe55e8 CH |
987 | } |
988 | ||
f13fae2d CH |
989 | STATIC void |
990 | xfs_diflags_to_linux( | |
991 | struct xfs_inode *ip) | |
992 | { | |
e4f75291 | 993 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
994 | unsigned int xflags = xfs_ip2xflags(ip); |
995 | ||
e7b89481 | 996 | if (xflags & FS_XFLAG_IMMUTABLE) |
f13fae2d CH |
997 | inode->i_flags |= S_IMMUTABLE; |
998 | else | |
999 | inode->i_flags &= ~S_IMMUTABLE; | |
e7b89481 | 1000 | if (xflags & FS_XFLAG_APPEND) |
f13fae2d CH |
1001 | inode->i_flags |= S_APPEND; |
1002 | else | |
1003 | inode->i_flags &= ~S_APPEND; | |
e7b89481 | 1004 | if (xflags & FS_XFLAG_SYNC) |
f13fae2d CH |
1005 | inode->i_flags |= S_SYNC; |
1006 | else | |
1007 | inode->i_flags &= ~S_SYNC; | |
e7b89481 | 1008 | if (xflags & FS_XFLAG_NOATIME) |
f13fae2d CH |
1009 | inode->i_flags |= S_NOATIME; |
1010 | else | |
1011 | inode->i_flags &= ~S_NOATIME; | |
58f88ca2 DC |
1012 | if (xflags & FS_XFLAG_DAX) |
1013 | inode->i_flags |= S_DAX; | |
1014 | else | |
1015 | inode->i_flags &= ~S_DAX; | |
1016 | ||
f13fae2d | 1017 | } |
25fe55e8 | 1018 | |
29a17c00 DC |
1019 | static int |
1020 | xfs_ioctl_setattr_xflags( | |
1021 | struct xfs_trans *tp, | |
1022 | struct xfs_inode *ip, | |
1023 | struct fsxattr *fa) | |
1024 | { | |
1025 | struct xfs_mount *mp = ip->i_mount; | |
1026 | ||
1027 | /* Can't change realtime flag if any extents are allocated. */ | |
1028 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
e7b89481 | 1029 | XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME)) |
29a17c00 DC |
1030 | return -EINVAL; |
1031 | ||
1032 | /* If realtime flag is set then must have realtime device */ | |
e7b89481 | 1033 | if (fa->fsx_xflags & FS_XFLAG_REALTIME) { |
29a17c00 DC |
1034 | if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || |
1035 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) | |
1036 | return -EINVAL; | |
1037 | } | |
1038 | ||
1987fd74 | 1039 | /* Clear reflink if we are actually able to set the rt flag. */ |
c8e156ac | 1040 | if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip)) |
1987fd74 | 1041 | ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK; |
c8e156ac | 1042 | |
4f435ebe DW |
1043 | /* Don't allow us to set DAX mode for a reflinked file for now. */ |
1044 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip)) | |
1045 | return -EINVAL; | |
1046 | ||
29a17c00 DC |
1047 | /* |
1048 | * Can't modify an immutable/append-only file unless | |
1049 | * we have appropriate permission. | |
1050 | */ | |
1051 | if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) || | |
e7b89481 | 1052 | (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) && |
29a17c00 DC |
1053 | !capable(CAP_LINUX_IMMUTABLE)) |
1054 | return -EPERM; | |
1055 | ||
29a17c00 DC |
1056 | xfs_set_diflags(ip, fa->fsx_xflags); |
1057 | xfs_diflags_to_linux(ip); | |
1058 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); | |
1059 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
ff6d6af2 | 1060 | XFS_STATS_INC(mp, xs_ig_attrchg); |
29a17c00 DC |
1061 | return 0; |
1062 | } | |
1063 | ||
3a6a854a DC |
1064 | /* |
1065 | * If we are changing DAX flags, we have to ensure the file is clean and any | |
1066 | * cached objects in the address space are invalidated and removed. This | |
1067 | * requires us to lock out other IO and page faults similar to a truncate | |
1068 | * operation. The locks need to be held until the transaction has been committed | |
1069 | * so that the cache invalidation is atomic with respect to the DAX flag | |
1070 | * manipulation. | |
1071 | */ | |
1072 | static int | |
1073 | xfs_ioctl_setattr_dax_invalidate( | |
1074 | struct xfs_inode *ip, | |
1075 | struct fsxattr *fa, | |
1076 | int *join_flags) | |
1077 | { | |
1078 | struct inode *inode = VFS_I(ip); | |
1079 | int error; | |
1080 | ||
1081 | *join_flags = 0; | |
1082 | ||
e8897529 DC |
1083 | /* |
1084 | * It is only valid to set the DAX flag on regular files and | |
64485437 DC |
1085 | * directories on filesystems where the block size is equal to the page |
1086 | * size. On directories it serves as an inherit hint. | |
e8897529 | 1087 | */ |
64485437 DC |
1088 | if (fa->fsx_xflags & FS_XFLAG_DAX) { |
1089 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) | |
1090 | return -EINVAL; | |
1091 | if (ip->i_mount->m_sb.sb_blocksize != PAGE_SIZE) | |
1092 | return -EINVAL; | |
1093 | } | |
e8897529 | 1094 | |
3a6a854a DC |
1095 | /* If the DAX state is not changing, we have nothing to do here. */ |
1096 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode)) | |
1097 | return 0; | |
1098 | if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode)) | |
1099 | return 0; | |
1100 | ||
1101 | /* lock, flush and invalidate mapping in preparation for flag change */ | |
1102 | xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL); | |
1103 | error = filemap_write_and_wait(inode->i_mapping); | |
1104 | if (error) | |
1105 | goto out_unlock; | |
1106 | error = invalidate_inode_pages2(inode->i_mapping); | |
1107 | if (error) | |
1108 | goto out_unlock; | |
1109 | ||
1110 | *join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL; | |
29a17c00 | 1111 | return 0; |
3a6a854a DC |
1112 | |
1113 | out_unlock: | |
1114 | xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL); | |
1115 | return error; | |
1116 | ||
29a17c00 DC |
1117 | } |
1118 | ||
8f3d17ab DC |
1119 | /* |
1120 | * Set up the transaction structure for the setattr operation, checking that we | |
1121 | * have permission to do so. On success, return a clean transaction and the | |
1122 | * inode locked exclusively ready for further operation specific checks. On | |
1123 | * failure, return an error without modifying or locking the inode. | |
3a6a854a DC |
1124 | * |
1125 | * The inode might already be IO locked on call. If this is the case, it is | |
1126 | * indicated in @join_flags and we take full responsibility for ensuring they | |
1127 | * are unlocked from now on. Hence if we have an error here, we still have to | |
1128 | * unlock them. Otherwise, once they are joined to the transaction, they will | |
1129 | * be unlocked on commit/cancel. | |
8f3d17ab DC |
1130 | */ |
1131 | static struct xfs_trans * | |
1132 | xfs_ioctl_setattr_get_trans( | |
3a6a854a DC |
1133 | struct xfs_inode *ip, |
1134 | int join_flags) | |
8f3d17ab DC |
1135 | { |
1136 | struct xfs_mount *mp = ip->i_mount; | |
1137 | struct xfs_trans *tp; | |
3a6a854a | 1138 | int error = -EROFS; |
8f3d17ab DC |
1139 | |
1140 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
3a6a854a DC |
1141 | goto out_unlock; |
1142 | error = -EIO; | |
8f3d17ab | 1143 | if (XFS_FORCED_SHUTDOWN(mp)) |
3a6a854a | 1144 | goto out_unlock; |
8f3d17ab | 1145 | |
253f4911 | 1146 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp); |
8f3d17ab | 1147 | if (error) |
253f4911 | 1148 | return ERR_PTR(error); |
8f3d17ab DC |
1149 | |
1150 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
3a6a854a DC |
1151 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags); |
1152 | join_flags = 0; | |
8f3d17ab DC |
1153 | |
1154 | /* | |
1155 | * CAP_FOWNER overrides the following restrictions: | |
1156 | * | |
1157 | * The user ID of the calling process must be equal to the file owner | |
1158 | * ID, except in cases where the CAP_FSETID capability is applicable. | |
1159 | */ | |
1160 | if (!inode_owner_or_capable(VFS_I(ip))) { | |
1161 | error = -EPERM; | |
1162 | goto out_cancel; | |
1163 | } | |
1164 | ||
1165 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1166 | xfs_trans_set_sync(tp); | |
1167 | ||
1168 | return tp; | |
1169 | ||
1170 | out_cancel: | |
4906e215 | 1171 | xfs_trans_cancel(tp); |
3a6a854a DC |
1172 | out_unlock: |
1173 | if (join_flags) | |
1174 | xfs_iunlock(ip, join_flags); | |
8f3d17ab DC |
1175 | return ERR_PTR(error); |
1176 | } | |
1177 | ||
9b94fcc3 IP |
1178 | /* |
1179 | * extent size hint validation is somewhat cumbersome. Rules are: | |
1180 | * | |
1181 | * 1. extent size hint is only valid for directories and regular files | |
e7b89481 DC |
1182 | * 2. FS_XFLAG_EXTSIZE is only valid for regular files |
1183 | * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories. | |
9b94fcc3 IP |
1184 | * 4. can only be changed on regular files if no extents are allocated |
1185 | * 5. can be changed on directories at any time | |
1186 | * 6. extsize hint of 0 turns off hints, clears inode flags. | |
1187 | * 7. Extent size must be a multiple of the appropriate block size. | |
1188 | * 8. for non-realtime files, the extent size hint must be limited | |
1189 | * to half the AG size to avoid alignment extending the extent beyond the | |
1190 | * limits of the AG. | |
1191 | */ | |
f92090e9 | 1192 | static int |
d4388d3c DC |
1193 | xfs_ioctl_setattr_check_extsize( |
1194 | struct xfs_inode *ip, | |
1195 | struct fsxattr *fa) | |
1196 | { | |
1197 | struct xfs_mount *mp = ip->i_mount; | |
1198 | ||
c19b3b05 | 1199 | if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode)) |
9b94fcc3 IP |
1200 | return -EINVAL; |
1201 | ||
e7b89481 | 1202 | if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) && |
c19b3b05 | 1203 | !S_ISDIR(VFS_I(ip)->i_mode)) |
9b94fcc3 IP |
1204 | return -EINVAL; |
1205 | ||
c19b3b05 | 1206 | if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents && |
d4388d3c DC |
1207 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize)) |
1208 | return -EINVAL; | |
1209 | ||
d4388d3c DC |
1210 | if (fa->fsx_extsize != 0) { |
1211 | xfs_extlen_t size; | |
1212 | xfs_fsblock_t extsize_fsb; | |
1213 | ||
1214 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1215 | if (extsize_fsb > MAXEXTLEN) | |
1216 | return -EINVAL; | |
1217 | ||
1218 | if (XFS_IS_REALTIME_INODE(ip) || | |
e7b89481 | 1219 | (fa->fsx_xflags & FS_XFLAG_REALTIME)) { |
d4388d3c DC |
1220 | size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog; |
1221 | } else { | |
1222 | size = mp->m_sb.sb_blocksize; | |
1223 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1224 | return -EINVAL; | |
1225 | } | |
1226 | ||
1227 | if (fa->fsx_extsize % size) | |
1228 | return -EINVAL; | |
9b94fcc3 | 1229 | } else |
e7b89481 | 1230 | fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT); |
9b94fcc3 | 1231 | |
d4388d3c DC |
1232 | return 0; |
1233 | } | |
1234 | ||
f7ca3522 DW |
1235 | /* |
1236 | * CoW extent size hint validation rules are: | |
1237 | * | |
1238 | * 1. CoW extent size hint can only be set if reflink is enabled on the fs. | |
1239 | * The inode does not have to have any shared blocks, but it must be a v3. | |
1240 | * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files; | |
1241 | * for a directory, the hint is propagated to new files. | |
1242 | * 3. Can be changed on files & directories at any time. | |
1243 | * 4. CoW extsize hint of 0 turns off hints, clears inode flags. | |
1244 | * 5. Extent size must be a multiple of the appropriate block size. | |
1245 | * 6. The extent size hint must be limited to half the AG size to avoid | |
1246 | * alignment extending the extent beyond the limits of the AG. | |
1247 | */ | |
1248 | static int | |
1249 | xfs_ioctl_setattr_check_cowextsize( | |
1250 | struct xfs_inode *ip, | |
1251 | struct fsxattr *fa) | |
1252 | { | |
1253 | struct xfs_mount *mp = ip->i_mount; | |
1254 | ||
1255 | if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE)) | |
1256 | return 0; | |
1257 | ||
1258 | if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb) || | |
1259 | ip->i_d.di_version != 3) | |
1260 | return -EINVAL; | |
1261 | ||
1262 | if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode)) | |
1263 | return -EINVAL; | |
1264 | ||
1265 | if (fa->fsx_cowextsize != 0) { | |
1266 | xfs_extlen_t size; | |
1267 | xfs_fsblock_t cowextsize_fsb; | |
1268 | ||
1269 | cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize); | |
1270 | if (cowextsize_fsb > MAXEXTLEN) | |
1271 | return -EINVAL; | |
1272 | ||
1273 | size = mp->m_sb.sb_blocksize; | |
1274 | if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1275 | return -EINVAL; | |
1276 | ||
1277 | if (fa->fsx_cowextsize % size) | |
1278 | return -EINVAL; | |
1279 | } else | |
1280 | fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE; | |
1281 | ||
1282 | return 0; | |
1283 | } | |
1284 | ||
f92090e9 | 1285 | static int |
23bd0735 DC |
1286 | xfs_ioctl_setattr_check_projid( |
1287 | struct xfs_inode *ip, | |
1288 | struct fsxattr *fa) | |
1289 | { | |
1290 | /* Disallow 32bit project ids if projid32bit feature is not enabled. */ | |
1291 | if (fa->fsx_projid > (__uint16_t)-1 && | |
1292 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
1293 | return -EINVAL; | |
1294 | ||
1295 | /* | |
1296 | * Project Quota ID state is only allowed to change from within the init | |
1297 | * namespace. Enforce that restriction only if we are trying to change | |
1298 | * the quota ID state. Everything else is allowed in user namespaces. | |
1299 | */ | |
1300 | if (current_user_ns() == &init_user_ns) | |
1301 | return 0; | |
1302 | ||
1303 | if (xfs_get_projid(ip) != fa->fsx_projid) | |
1304 | return -EINVAL; | |
e7b89481 | 1305 | if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) != |
23bd0735 DC |
1306 | (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)) |
1307 | return -EINVAL; | |
1308 | ||
1309 | return 0; | |
1310 | } | |
25fe55e8 CH |
1311 | |
1312 | STATIC int | |
1313 | xfs_ioctl_setattr( | |
1314 | xfs_inode_t *ip, | |
fd179b9c | 1315 | struct fsxattr *fa) |
25fe55e8 CH |
1316 | { |
1317 | struct xfs_mount *mp = ip->i_mount; | |
1318 | struct xfs_trans *tp; | |
7d095257 | 1319 | struct xfs_dquot *udqp = NULL; |
92f8ff73 | 1320 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
1321 | struct xfs_dquot *olddquot = NULL; |
1322 | int code; | |
3a6a854a | 1323 | int join_flags = 0; |
25fe55e8 | 1324 | |
cca28fb8 | 1325 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 | 1326 | |
23bd0735 DC |
1327 | code = xfs_ioctl_setattr_check_projid(ip, fa); |
1328 | if (code) | |
1329 | return code; | |
23963e54 | 1330 | |
25fe55e8 CH |
1331 | /* |
1332 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
1333 | * before we start any other transactions. Trying to do this later | |
1334 | * is messy. We don't care to take a readlock to look at the ids | |
1335 | * in inode here, because we can't hold it across the trans_reserve. | |
1336 | * If the IDs do change before we take the ilock, we're covered | |
1337 | * because the i_*dquot fields will get updated anyway. | |
1338 | */ | |
fd179b9c | 1339 | if (XFS_IS_QUOTA_ON(mp)) { |
7d095257 | 1340 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 | 1341 | ip->i_d.di_gid, fa->fsx_projid, |
92f8ff73 | 1342 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
25fe55e8 CH |
1343 | if (code) |
1344 | return code; | |
1345 | } | |
1346 | ||
3a6a854a DC |
1347 | /* |
1348 | * Changing DAX config may require inode locking for mapping | |
1349 | * invalidation. These need to be held all the way to transaction commit | |
1350 | * or cancel time, so need to be passed through to | |
1351 | * xfs_ioctl_setattr_get_trans() so it can apply them to the join call | |
1352 | * appropriately. | |
1353 | */ | |
1354 | code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags); | |
1355 | if (code) | |
1356 | goto error_free_dquots; | |
1357 | ||
1358 | tp = xfs_ioctl_setattr_get_trans(ip, join_flags); | |
8f3d17ab DC |
1359 | if (IS_ERR(tp)) { |
1360 | code = PTR_ERR(tp); | |
1361 | goto error_free_dquots; | |
25fe55e8 CH |
1362 | } |
1363 | ||
25fe55e8 | 1364 | |
fd179b9c DC |
1365 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && |
1366 | xfs_get_projid(ip) != fa->fsx_projid) { | |
1367 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp, | |
1368 | capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0); | |
1369 | if (code) /* out of quota */ | |
d4388d3c | 1370 | goto error_trans_cancel; |
25fe55e8 CH |
1371 | } |
1372 | ||
d4388d3c DC |
1373 | code = xfs_ioctl_setattr_check_extsize(ip, fa); |
1374 | if (code) | |
1375 | goto error_trans_cancel; | |
25fe55e8 | 1376 | |
f7ca3522 DW |
1377 | code = xfs_ioctl_setattr_check_cowextsize(ip, fa); |
1378 | if (code) | |
1379 | goto error_trans_cancel; | |
1380 | ||
29a17c00 DC |
1381 | code = xfs_ioctl_setattr_xflags(tp, ip, fa); |
1382 | if (code) | |
d4388d3c | 1383 | goto error_trans_cancel; |
25fe55e8 CH |
1384 | |
1385 | /* | |
fd179b9c DC |
1386 | * Change file ownership. Must be the owner or privileged. CAP_FSETID |
1387 | * overrides the following restrictions: | |
1388 | * | |
1389 | * The set-user-ID and set-group-ID bits of a file will be cleared upon | |
1390 | * successful return from chown() | |
25fe55e8 | 1391 | */ |
25fe55e8 | 1392 | |
c19b3b05 | 1393 | if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) && |
fd179b9c | 1394 | !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) |
c19b3b05 | 1395 | VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID); |
25fe55e8 | 1396 | |
fd179b9c DC |
1397 | /* Change the ownerships and register project quota modifications */ |
1398 | if (xfs_get_projid(ip) != fa->fsx_projid) { | |
1399 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { | |
1400 | olddquot = xfs_qm_vop_chown(tp, ip, | |
1401 | &ip->i_pdquot, pdqp); | |
1402 | } | |
1403 | ASSERT(ip->i_d.di_version > 1); | |
1404 | xfs_set_projid(ip, fa->fsx_projid); | |
f13fae2d | 1405 | } |
25fe55e8 | 1406 | |
a872703f DC |
1407 | /* |
1408 | * Only set the extent size hint if we've already determined that the | |
1409 | * extent size hint should be set on the inode. If no extent size flags | |
1410 | * are set on the inode then unconditionally clear the extent size hint. | |
1411 | */ | |
fd179b9c DC |
1412 | if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) |
1413 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
1414 | else | |
1415 | ip->i_d.di_extsize = 0; | |
f7ca3522 DW |
1416 | if (ip->i_d.di_version == 3 && |
1417 | (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE)) | |
1418 | ip->i_d.di_cowextsize = fa->fsx_cowextsize >> | |
1419 | mp->m_sb.sb_blocklog; | |
1420 | else | |
1421 | ip->i_d.di_cowextsize = 0; | |
25fe55e8 | 1422 | |
70393313 | 1423 | code = xfs_trans_commit(tp); |
25fe55e8 CH |
1424 | |
1425 | /* | |
1426 | * Release any dquot(s) the inode had kept before chown. | |
1427 | */ | |
7d095257 CH |
1428 | xfs_qm_dqrele(olddquot); |
1429 | xfs_qm_dqrele(udqp); | |
92f8ff73 | 1430 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1431 | |
288699fe | 1432 | return code; |
25fe55e8 | 1433 | |
d4388d3c | 1434 | error_trans_cancel: |
4906e215 | 1435 | xfs_trans_cancel(tp); |
8f3d17ab | 1436 | error_free_dquots: |
7d095257 | 1437 | xfs_qm_dqrele(udqp); |
92f8ff73 | 1438 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1439 | return code; |
1440 | } | |
1441 | ||
1da177e4 | 1442 | STATIC int |
df26cfe8 | 1443 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1444 | xfs_inode_t *ip, |
1445 | struct file *filp, | |
1da177e4 LT |
1446 | void __user *arg) |
1447 | { | |
1448 | struct fsxattr fa; | |
d9457dc0 | 1449 | int error; |
df26cfe8 LM |
1450 | |
1451 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1452 | return -EFAULT; | |
1da177e4 | 1453 | |
d9457dc0 JK |
1454 | error = mnt_want_write_file(filp); |
1455 | if (error) | |
1456 | return error; | |
fd179b9c | 1457 | error = xfs_ioctl_setattr(ip, &fa); |
d9457dc0 | 1458 | mnt_drop_write_file(filp); |
2451337d | 1459 | return error; |
df26cfe8 | 1460 | } |
1da177e4 | 1461 | |
df26cfe8 LM |
1462 | STATIC int |
1463 | xfs_ioc_getxflags( | |
1464 | xfs_inode_t *ip, | |
1465 | void __user *arg) | |
1466 | { | |
1467 | unsigned int flags; | |
1da177e4 | 1468 | |
df26cfe8 LM |
1469 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1470 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1471 | return -EFAULT; | |
1472 | return 0; | |
1473 | } | |
1da177e4 | 1474 | |
df26cfe8 LM |
1475 | STATIC int |
1476 | xfs_ioc_setxflags( | |
f96291f6 | 1477 | struct xfs_inode *ip, |
df26cfe8 LM |
1478 | struct file *filp, |
1479 | void __user *arg) | |
1480 | { | |
f96291f6 | 1481 | struct xfs_trans *tp; |
25fe55e8 | 1482 | struct fsxattr fa; |
df26cfe8 | 1483 | unsigned int flags; |
3a6a854a | 1484 | int join_flags = 0; |
f96291f6 | 1485 | int error; |
1da177e4 | 1486 | |
df26cfe8 LM |
1487 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1488 | return -EFAULT; | |
1da177e4 | 1489 | |
df26cfe8 LM |
1490 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1491 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1492 | FS_SYNC_FL)) | |
1493 | return -EOPNOTSUPP; | |
1da177e4 | 1494 | |
25fe55e8 | 1495 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); |
1da177e4 | 1496 | |
d9457dc0 JK |
1497 | error = mnt_want_write_file(filp); |
1498 | if (error) | |
1499 | return error; | |
f96291f6 | 1500 | |
3a6a854a DC |
1501 | /* |
1502 | * Changing DAX config may require inode locking for mapping | |
1503 | * invalidation. These need to be held all the way to transaction commit | |
1504 | * or cancel time, so need to be passed through to | |
1505 | * xfs_ioctl_setattr_get_trans() so it can apply them to the join call | |
1506 | * appropriately. | |
1507 | */ | |
1508 | error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags); | |
1509 | if (error) | |
1510 | goto out_drop_write; | |
1511 | ||
1512 | tp = xfs_ioctl_setattr_get_trans(ip, join_flags); | |
f96291f6 DC |
1513 | if (IS_ERR(tp)) { |
1514 | error = PTR_ERR(tp); | |
1515 | goto out_drop_write; | |
1516 | } | |
1517 | ||
1518 | error = xfs_ioctl_setattr_xflags(tp, ip, &fa); | |
1519 | if (error) { | |
4906e215 | 1520 | xfs_trans_cancel(tp); |
f96291f6 DC |
1521 | goto out_drop_write; |
1522 | } | |
1523 | ||
70393313 | 1524 | error = xfs_trans_commit(tp); |
f96291f6 | 1525 | out_drop_write: |
d9457dc0 | 1526 | mnt_drop_write_file(filp); |
2451337d | 1527 | return error; |
1da177e4 LT |
1528 | } |
1529 | ||
8a7141a8 | 1530 | STATIC int |
1dbba086 | 1531 | xfs_getbmap_format(void **ap, struct getbmapx *bmv) |
8a7141a8 | 1532 | { |
b972d079 | 1533 | struct getbmap __user *base = (struct getbmap __user *)*ap; |
8a7141a8 ES |
1534 | |
1535 | /* copy only getbmap portion (not getbmapx) */ | |
1536 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
2451337d | 1537 | return -EFAULT; |
8a7141a8 ES |
1538 | |
1539 | *ap += sizeof(struct getbmap); | |
1540 | return 0; | |
1541 | } | |
1542 | ||
1da177e4 LT |
1543 | STATIC int |
1544 | xfs_ioc_getbmap( | |
8f3e2058 | 1545 | struct file *file, |
1da177e4 LT |
1546 | unsigned int cmd, |
1547 | void __user *arg) | |
1548 | { | |
be6324c0 | 1549 | struct getbmapx bmx = { 0 }; |
1da177e4 LT |
1550 | int error; |
1551 | ||
be6324c0 DW |
1552 | /* struct getbmap is a strict subset of struct getbmapx. */ |
1553 | if (copy_from_user(&bmx, arg, offsetof(struct getbmapx, bmv_iflags))) | |
b474c7ae | 1554 | return -EFAULT; |
1da177e4 | 1555 | |
8a7141a8 | 1556 | if (bmx.bmv_count < 2) |
b474c7ae | 1557 | return -EINVAL; |
1da177e4 | 1558 | |
8a7141a8 | 1559 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
8f3e2058 | 1560 | if (file->f_mode & FMODE_NOCMTIME) |
8a7141a8 | 1561 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1562 | |
8f3e2058 | 1563 | error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format, |
b972d079 | 1564 | (__force struct getbmap *)arg+1); |
1da177e4 | 1565 | if (error) |
2451337d | 1566 | return error; |
1da177e4 | 1567 | |
8a7141a8 ES |
1568 | /* copy back header - only size of getbmap */ |
1569 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
b474c7ae | 1570 | return -EFAULT; |
1da177e4 LT |
1571 | return 0; |
1572 | } | |
1573 | ||
8a7141a8 | 1574 | STATIC int |
1dbba086 | 1575 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv) |
8a7141a8 | 1576 | { |
b972d079 | 1577 | struct getbmapx __user *base = (struct getbmapx __user *)*ap; |
8a7141a8 ES |
1578 | |
1579 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
2451337d | 1580 | return -EFAULT; |
8a7141a8 ES |
1581 | |
1582 | *ap += sizeof(struct getbmapx); | |
1583 | return 0; | |
1584 | } | |
1585 | ||
1da177e4 LT |
1586 | STATIC int |
1587 | xfs_ioc_getbmapx( | |
993386c1 | 1588 | struct xfs_inode *ip, |
1da177e4 LT |
1589 | void __user *arg) |
1590 | { | |
1591 | struct getbmapx bmx; | |
1da177e4 LT |
1592 | int error; |
1593 | ||
1594 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
b474c7ae | 1595 | return -EFAULT; |
1da177e4 LT |
1596 | |
1597 | if (bmx.bmv_count < 2) | |
b474c7ae | 1598 | return -EINVAL; |
1da177e4 | 1599 | |
8a7141a8 | 1600 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
b474c7ae | 1601 | return -EINVAL; |
1da177e4 | 1602 | |
8a7141a8 | 1603 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
b972d079 | 1604 | (__force struct getbmapx *)arg+1); |
1da177e4 | 1605 | if (error) |
2451337d | 1606 | return error; |
1da177e4 | 1607 | |
8a7141a8 ES |
1608 | /* copy back header */ |
1609 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
b474c7ae | 1610 | return -EFAULT; |
1da177e4 LT |
1611 | |
1612 | return 0; | |
1613 | } | |
df26cfe8 | 1614 | |
e89c0413 DW |
1615 | struct getfsmap_info { |
1616 | struct xfs_mount *mp; | |
1617 | struct fsmap __user *data; | |
1618 | __u32 last_flags; | |
1619 | }; | |
1620 | ||
1621 | STATIC int | |
1622 | xfs_getfsmap_format(struct xfs_fsmap *xfm, void *priv) | |
1623 | { | |
1624 | struct getfsmap_info *info = priv; | |
1625 | struct fsmap fm; | |
1626 | ||
1627 | trace_xfs_getfsmap_mapping(info->mp, xfm); | |
1628 | ||
1629 | info->last_flags = xfm->fmr_flags; | |
1630 | xfs_fsmap_from_internal(&fm, xfm); | |
1631 | if (copy_to_user(info->data, &fm, sizeof(struct fsmap))) | |
1632 | return -EFAULT; | |
1633 | ||
1634 | info->data++; | |
1635 | return 0; | |
1636 | } | |
1637 | ||
1638 | STATIC int | |
1639 | xfs_ioc_getfsmap( | |
1640 | struct xfs_inode *ip, | |
1641 | void __user *arg) | |
1642 | { | |
ef2b67ec | 1643 | struct getfsmap_info info = { NULL }; |
e89c0413 DW |
1644 | struct xfs_fsmap_head xhead = {0}; |
1645 | struct fsmap_head head; | |
1646 | bool aborted = false; | |
1647 | int error; | |
1648 | ||
1649 | if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) | |
1650 | return -EFAULT; | |
1651 | if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || | |
1652 | memchr_inv(head.fmh_keys[0].fmr_reserved, 0, | |
1653 | sizeof(head.fmh_keys[0].fmr_reserved)) || | |
1654 | memchr_inv(head.fmh_keys[1].fmr_reserved, 0, | |
1655 | sizeof(head.fmh_keys[1].fmr_reserved))) | |
1656 | return -EINVAL; | |
1657 | ||
1658 | xhead.fmh_iflags = head.fmh_iflags; | |
1659 | xhead.fmh_count = head.fmh_count; | |
1660 | xfs_fsmap_to_internal(&xhead.fmh_keys[0], &head.fmh_keys[0]); | |
1661 | xfs_fsmap_to_internal(&xhead.fmh_keys[1], &head.fmh_keys[1]); | |
1662 | ||
1663 | trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]); | |
1664 | trace_xfs_getfsmap_high_key(ip->i_mount, &xhead.fmh_keys[1]); | |
1665 | ||
1666 | info.mp = ip->i_mount; | |
1667 | info.data = ((__force struct fsmap_head *)arg)->fmh_recs; | |
1668 | error = xfs_getfsmap(ip->i_mount, &xhead, xfs_getfsmap_format, &info); | |
1669 | if (error == XFS_BTREE_QUERY_RANGE_ABORT) { | |
1670 | error = 0; | |
1671 | aborted = true; | |
1672 | } else if (error) | |
1673 | return error; | |
1674 | ||
1675 | /* If we didn't abort, set the "last" flag in the last fmx */ | |
1676 | if (!aborted && xhead.fmh_entries) { | |
1677 | info.data--; | |
1678 | info.last_flags |= FMR_OF_LAST; | |
1679 | if (copy_to_user(&info.data->fmr_flags, &info.last_flags, | |
1680 | sizeof(info.last_flags))) | |
1681 | return -EFAULT; | |
1682 | } | |
1683 | ||
1684 | /* copy back header */ | |
1685 | head.fmh_entries = xhead.fmh_entries; | |
1686 | head.fmh_oflags = xhead.fmh_oflags; | |
1687 | if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) | |
1688 | return -EFAULT; | |
1689 | ||
1690 | return 0; | |
1691 | } | |
1692 | ||
a133d952 DC |
1693 | int |
1694 | xfs_ioc_swapext( | |
1695 | xfs_swapext_t *sxp) | |
1696 | { | |
1697 | xfs_inode_t *ip, *tip; | |
1698 | struct fd f, tmp; | |
1699 | int error = 0; | |
1700 | ||
1701 | /* Pull information for the target fd */ | |
1702 | f = fdget((int)sxp->sx_fdtarget); | |
1703 | if (!f.file) { | |
2451337d | 1704 | error = -EINVAL; |
a133d952 DC |
1705 | goto out; |
1706 | } | |
1707 | ||
1708 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1709 | !(f.file->f_mode & FMODE_READ) || | |
1710 | (f.file->f_flags & O_APPEND)) { | |
2451337d | 1711 | error = -EBADF; |
a133d952 DC |
1712 | goto out_put_file; |
1713 | } | |
1714 | ||
1715 | tmp = fdget((int)sxp->sx_fdtmp); | |
1716 | if (!tmp.file) { | |
2451337d | 1717 | error = -EINVAL; |
a133d952 DC |
1718 | goto out_put_file; |
1719 | } | |
1720 | ||
1721 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1722 | !(tmp.file->f_mode & FMODE_READ) || | |
1723 | (tmp.file->f_flags & O_APPEND)) { | |
2451337d | 1724 | error = -EBADF; |
a133d952 DC |
1725 | goto out_put_tmp_file; |
1726 | } | |
1727 | ||
1728 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1729 | IS_SWAPFILE(file_inode(tmp.file))) { | |
2451337d | 1730 | error = -EINVAL; |
a133d952 DC |
1731 | goto out_put_tmp_file; |
1732 | } | |
1733 | ||
7f1b6245 JH |
1734 | /* |
1735 | * We need to ensure that the fds passed in point to XFS inodes | |
1736 | * before we cast and access them as XFS structures as we have no | |
1737 | * control over what the user passes us here. | |
1738 | */ | |
1739 | if (f.file->f_op != &xfs_file_operations || | |
1740 | tmp.file->f_op != &xfs_file_operations) { | |
1741 | error = -EINVAL; | |
1742 | goto out_put_tmp_file; | |
1743 | } | |
1744 | ||
a133d952 DC |
1745 | ip = XFS_I(file_inode(f.file)); |
1746 | tip = XFS_I(file_inode(tmp.file)); | |
1747 | ||
1748 | if (ip->i_mount != tip->i_mount) { | |
2451337d | 1749 | error = -EINVAL; |
a133d952 DC |
1750 | goto out_put_tmp_file; |
1751 | } | |
1752 | ||
1753 | if (ip->i_ino == tip->i_ino) { | |
2451337d | 1754 | error = -EINVAL; |
a133d952 DC |
1755 | goto out_put_tmp_file; |
1756 | } | |
1757 | ||
1758 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
2451337d | 1759 | error = -EIO; |
a133d952 DC |
1760 | goto out_put_tmp_file; |
1761 | } | |
1762 | ||
1763 | error = xfs_swap_extents(ip, tip, sxp); | |
1764 | ||
1765 | out_put_tmp_file: | |
1766 | fdput(tmp); | |
1767 | out_put_file: | |
1768 | fdput(f); | |
1769 | out: | |
1770 | return error; | |
1771 | } | |
1772 | ||
4d4be482 CH |
1773 | /* |
1774 | * Note: some of the ioctl's return positive numbers as a | |
1775 | * byte count indicating success, such as readlink_by_handle. | |
1776 | * So we don't "sign flip" like most other routines. This means | |
1777 | * true errors need to be returned as a negative value. | |
1778 | */ | |
1779 | long | |
1780 | xfs_file_ioctl( | |
df26cfe8 | 1781 | struct file *filp, |
df26cfe8 | 1782 | unsigned int cmd, |
4d4be482 | 1783 | unsigned long p) |
df26cfe8 | 1784 | { |
496ad9aa | 1785 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1786 | struct xfs_inode *ip = XFS_I(inode); |
1787 | struct xfs_mount *mp = ip->i_mount; | |
1788 | void __user *arg = (void __user *)p; | |
df26cfe8 LM |
1789 | int error; |
1790 | ||
cca28fb8 | 1791 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1792 | |
1793 | switch (cmd) { | |
a46db608 CH |
1794 | case FITRIM: |
1795 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1796 | case XFS_IOC_ALLOCSP: |
1797 | case XFS_IOC_FREESP: | |
1798 | case XFS_IOC_RESVSP: | |
1799 | case XFS_IOC_UNRESVSP: | |
1800 | case XFS_IOC_ALLOCSP64: | |
1801 | case XFS_IOC_FREESP64: | |
1802 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1803 | case XFS_IOC_UNRESVSP64: |
1804 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1805 | xfs_flock64_t bf; |
df26cfe8 | 1806 | |
743bb465 | 1807 | if (copy_from_user(&bf, arg, sizeof(bf))) |
b474c7ae | 1808 | return -EFAULT; |
8f3e2058 | 1809 | return xfs_ioc_space(filp, cmd, &bf); |
743bb465 | 1810 | } |
df26cfe8 LM |
1811 | case XFS_IOC_DIOINFO: { |
1812 | struct dioattr da; | |
1813 | xfs_buftarg_t *target = | |
1814 | XFS_IS_REALTIME_INODE(ip) ? | |
1815 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1816 | ||
7c71ee78 | 1817 | da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; |
df26cfe8 LM |
1818 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1819 | ||
1820 | if (copy_to_user(arg, &da, sizeof(da))) | |
b474c7ae | 1821 | return -EFAULT; |
df26cfe8 LM |
1822 | return 0; |
1823 | } | |
1824 | ||
1825 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1826 | case XFS_IOC_FSBULKSTAT: | |
1827 | case XFS_IOC_FSINUMBERS: | |
1828 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1829 | ||
1830 | case XFS_IOC_FSGEOMETRY_V1: | |
1831 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1832 | ||
1833 | case XFS_IOC_FSGEOMETRY: | |
1834 | return xfs_ioc_fsgeometry(mp, arg); | |
1835 | ||
1836 | case XFS_IOC_GETVERSION: | |
1837 | return put_user(inode->i_generation, (int __user *)arg); | |
1838 | ||
1839 | case XFS_IOC_FSGETXATTR: | |
1840 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1841 | case XFS_IOC_FSGETXATTRA: | |
1842 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1843 | case XFS_IOC_FSSETXATTR: |
1844 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1845 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1846 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1847 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1848 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1849 | |
1850 | case XFS_IOC_FSSETDM: { | |
1851 | struct fsdmidata dmi; | |
1852 | ||
1853 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
b474c7ae | 1854 | return -EFAULT; |
df26cfe8 | 1855 | |
d9457dc0 JK |
1856 | error = mnt_want_write_file(filp); |
1857 | if (error) | |
1858 | return error; | |
1859 | ||
df26cfe8 LM |
1860 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1861 | dmi.fsd_dmstate); | |
d9457dc0 | 1862 | mnt_drop_write_file(filp); |
2451337d | 1863 | return error; |
df26cfe8 LM |
1864 | } |
1865 | ||
1866 | case XFS_IOC_GETBMAP: | |
1867 | case XFS_IOC_GETBMAPA: | |
8f3e2058 | 1868 | return xfs_ioc_getbmap(filp, cmd, arg); |
df26cfe8 LM |
1869 | |
1870 | case XFS_IOC_GETBMAPX: | |
1871 | return xfs_ioc_getbmapx(ip, arg); | |
1872 | ||
e89c0413 DW |
1873 | case FS_IOC_GETFSMAP: |
1874 | return xfs_ioc_getfsmap(ip, arg); | |
1875 | ||
df26cfe8 LM |
1876 | case XFS_IOC_FD_TO_HANDLE: |
1877 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1878 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1879 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1880 | |
743bb465 | 1881 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
b474c7ae | 1882 | return -EFAULT; |
743bb465 | 1883 | return xfs_find_handle(cmd, &hreq); |
1884 | } | |
1885 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1886 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1887 | |
743bb465 | 1888 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1889 | return -EFAULT; |
d296d30a | 1890 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1891 | } |
df26cfe8 | 1892 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1893 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1894 | |
743bb465 | 1895 | case XFS_IOC_READLINK_BY_HANDLE: { |
1896 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1897 | |
743bb465 | 1898 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1899 | return -EFAULT; |
d296d30a | 1900 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1901 | } |
df26cfe8 | 1902 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1903 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1904 | |
1905 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1906 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1907 | |
1908 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1909 | struct xfs_swapext sxp; |
1910 | ||
1911 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
b474c7ae | 1912 | return -EFAULT; |
d9457dc0 JK |
1913 | error = mnt_want_write_file(filp); |
1914 | if (error) | |
1915 | return error; | |
a133d952 | 1916 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 1917 | mnt_drop_write_file(filp); |
2451337d | 1918 | return error; |
df26cfe8 LM |
1919 | } |
1920 | ||
1921 | case XFS_IOC_FSCOUNTS: { | |
1922 | xfs_fsop_counts_t out; | |
1923 | ||
1924 | error = xfs_fs_counts(mp, &out); | |
1925 | if (error) | |
2451337d | 1926 | return error; |
df26cfe8 LM |
1927 | |
1928 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1929 | return -EFAULT; |
df26cfe8 LM |
1930 | return 0; |
1931 | } | |
1932 | ||
1933 | case XFS_IOC_SET_RESBLKS: { | |
1934 | xfs_fsop_resblks_t inout; | |
1935 | __uint64_t in; | |
1936 | ||
1937 | if (!capable(CAP_SYS_ADMIN)) | |
1938 | return -EPERM; | |
1939 | ||
d5db0f97 | 1940 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
b474c7ae | 1941 | return -EROFS; |
d5db0f97 | 1942 | |
df26cfe8 | 1943 | if (copy_from_user(&inout, arg, sizeof(inout))) |
b474c7ae | 1944 | return -EFAULT; |
df26cfe8 | 1945 | |
d9457dc0 JK |
1946 | error = mnt_want_write_file(filp); |
1947 | if (error) | |
1948 | return error; | |
1949 | ||
df26cfe8 LM |
1950 | /* input parameter is passed in resblks field of structure */ |
1951 | in = inout.resblks; | |
1952 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1953 | mnt_drop_write_file(filp); |
df26cfe8 | 1954 | if (error) |
2451337d | 1955 | return error; |
df26cfe8 LM |
1956 | |
1957 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
b474c7ae | 1958 | return -EFAULT; |
df26cfe8 LM |
1959 | return 0; |
1960 | } | |
1961 | ||
1962 | case XFS_IOC_GET_RESBLKS: { | |
1963 | xfs_fsop_resblks_t out; | |
1964 | ||
1965 | if (!capable(CAP_SYS_ADMIN)) | |
1966 | return -EPERM; | |
1967 | ||
1968 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1969 | if (error) | |
2451337d | 1970 | return error; |
df26cfe8 LM |
1971 | |
1972 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1973 | return -EFAULT; |
df26cfe8 LM |
1974 | |
1975 | return 0; | |
1976 | } | |
1977 | ||
1978 | case XFS_IOC_FSGROWFSDATA: { | |
1979 | xfs_growfs_data_t in; | |
1980 | ||
df26cfe8 | 1981 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1982 | return -EFAULT; |
df26cfe8 | 1983 | |
d9457dc0 JK |
1984 | error = mnt_want_write_file(filp); |
1985 | if (error) | |
1986 | return error; | |
df26cfe8 | 1987 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1988 | mnt_drop_write_file(filp); |
2451337d | 1989 | return error; |
df26cfe8 LM |
1990 | } |
1991 | ||
1992 | case XFS_IOC_FSGROWFSLOG: { | |
1993 | xfs_growfs_log_t in; | |
1994 | ||
df26cfe8 | 1995 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1996 | return -EFAULT; |
df26cfe8 | 1997 | |
d9457dc0 JK |
1998 | error = mnt_want_write_file(filp); |
1999 | if (error) | |
2000 | return error; | |
df26cfe8 | 2001 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 2002 | mnt_drop_write_file(filp); |
2451337d | 2003 | return error; |
df26cfe8 LM |
2004 | } |
2005 | ||
2006 | case XFS_IOC_FSGROWFSRT: { | |
2007 | xfs_growfs_rt_t in; | |
2008 | ||
df26cfe8 | 2009 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2010 | return -EFAULT; |
df26cfe8 | 2011 | |
d9457dc0 JK |
2012 | error = mnt_want_write_file(filp); |
2013 | if (error) | |
2014 | return error; | |
df26cfe8 | 2015 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 2016 | mnt_drop_write_file(filp); |
2451337d | 2017 | return error; |
df26cfe8 LM |
2018 | } |
2019 | ||
df26cfe8 LM |
2020 | case XFS_IOC_GOINGDOWN: { |
2021 | __uint32_t in; | |
2022 | ||
2023 | if (!capable(CAP_SYS_ADMIN)) | |
2024 | return -EPERM; | |
2025 | ||
2026 | if (get_user(in, (__uint32_t __user *)arg)) | |
b474c7ae | 2027 | return -EFAULT; |
df26cfe8 | 2028 | |
2451337d | 2029 | return xfs_fs_goingdown(mp, in); |
df26cfe8 LM |
2030 | } |
2031 | ||
2032 | case XFS_IOC_ERROR_INJECTION: { | |
2033 | xfs_error_injection_t in; | |
2034 | ||
2035 | if (!capable(CAP_SYS_ADMIN)) | |
2036 | return -EPERM; | |
2037 | ||
2038 | if (copy_from_user(&in, arg, sizeof(in))) | |
b474c7ae | 2039 | return -EFAULT; |
df26cfe8 | 2040 | |
2451337d | 2041 | return xfs_errortag_add(in.errtag, mp); |
df26cfe8 LM |
2042 | } |
2043 | ||
2044 | case XFS_IOC_ERROR_CLEARALL: | |
2045 | if (!capable(CAP_SYS_ADMIN)) | |
2046 | return -EPERM; | |
2047 | ||
2451337d | 2048 | return xfs_errortag_clearall(mp, 1); |
df26cfe8 | 2049 | |
8ca149de | 2050 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
2051 | struct xfs_fs_eofblocks eofb; |
2052 | struct xfs_eofblocks keofb; | |
8ca149de | 2053 | |
8c567a7f DE |
2054 | if (!capable(CAP_SYS_ADMIN)) |
2055 | return -EPERM; | |
2056 | ||
2057 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 2058 | return -EROFS; |
8c567a7f | 2059 | |
8ca149de | 2060 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
b474c7ae | 2061 | return -EFAULT; |
8ca149de | 2062 | |
b9fe5052 DE |
2063 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
2064 | if (error) | |
2451337d | 2065 | return error; |
8ca149de | 2066 | |
2451337d | 2067 | return xfs_icache_free_eofblocks(mp, &keofb); |
8ca149de BF |
2068 | } |
2069 | ||
df26cfe8 LM |
2070 | default: |
2071 | return -ENOTTY; | |
2072 | } | |
2073 | } |