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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 | 5 | */ |
1da177e4 | 6 | #include "xfs.h" |
1da177e4 | 7 | #include "xfs_fs.h" |
70a9883c | 8 | #include "xfs_shared.h" |
239880ef DC |
9 | #include "xfs_format.h" |
10 | #include "xfs_log_format.h" | |
11 | #include "xfs_trans_resv.h" | |
1da177e4 | 12 | #include "xfs_mount.h" |
1da177e4 | 13 | #include "xfs_inode.h" |
1da177e4 | 14 | #include "xfs_rtalloc.h" |
1da177e4 | 15 | #include "xfs_itable.h" |
a844f451 | 16 | #include "xfs_error.h" |
1da177e4 | 17 | #include "xfs_attr.h" |
a844f451 | 18 | #include "xfs_bmap.h" |
68988114 | 19 | #include "xfs_bmap_util.h" |
1da177e4 | 20 | #include "xfs_fsops.h" |
a46db608 | 21 | #include "xfs_discard.h" |
25fe55e8 | 22 | #include "xfs_quota.h" |
d296d30a | 23 | #include "xfs_export.h" |
0b1b213f | 24 | #include "xfs_trace.h" |
8ca149de | 25 | #include "xfs_icache.h" |
a4fbe6ab | 26 | #include "xfs_trans.h" |
47e1bf64 | 27 | #include "xfs_acl.h" |
e89c0413 DW |
28 | #include "xfs_btree.h" |
29 | #include <linux/fsmap.h> | |
30 | #include "xfs_fsmap.h" | |
36fd6e86 | 31 | #include "scrub/xfs_scrub.h" |
c368ebcd | 32 | #include "xfs_sb.h" |
7cd5006b | 33 | #include "xfs_ag.h" |
c23232d4 | 34 | #include "xfs_health.h" |
1da177e4 | 35 | |
1da177e4 LT |
36 | #include <linux/mount.h> |
37 | #include <linux/namei.h> | |
1da177e4 LT |
38 | |
39 | /* | |
40 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
41 | * a file or fs handle. | |
42 | * | |
43 | * XFS_IOC_PATH_TO_FSHANDLE | |
44 | * returns fs handle for a mount point or path within that mount point | |
45 | * XFS_IOC_FD_TO_HANDLE | |
46 | * returns full handle for a FD opened in user space | |
47 | * XFS_IOC_PATH_TO_HANDLE | |
48 | * returns full handle for a path | |
49 | */ | |
d5547f9f | 50 | int |
1da177e4 LT |
51 | xfs_find_handle( |
52 | unsigned int cmd, | |
743bb465 | 53 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
54 | { |
55 | int hsize; | |
56 | xfs_handle_t handle; | |
1da177e4 | 57 | struct inode *inode; |
a30b0367 | 58 | struct fd f = {NULL}; |
4346cdd4 | 59 | struct path path; |
2903ff01 | 60 | int error; |
4346cdd4 | 61 | struct xfs_inode *ip; |
1da177e4 | 62 | |
4346cdd4 | 63 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
64 | f = fdget(hreq->fd); |
65 | if (!f.file) | |
4346cdd4 | 66 | return -EBADF; |
496ad9aa | 67 | inode = file_inode(f.file); |
4346cdd4 CH |
68 | } else { |
69 | error = user_lpath((const char __user *)hreq->path, &path); | |
70 | if (error) | |
71 | return error; | |
2b0143b5 | 72 | inode = d_inode(path.dentry); |
1da177e4 | 73 | } |
4346cdd4 CH |
74 | ip = XFS_I(inode); |
75 | ||
76 | /* | |
77 | * We can only generate handles for inodes residing on a XFS filesystem, | |
78 | * and only for regular files, directories or symbolic links. | |
79 | */ | |
80 | error = -EINVAL; | |
81 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
82 | goto out_put; | |
83 | ||
84 | error = -EBADF; | |
85 | if (!S_ISREG(inode->i_mode) && | |
86 | !S_ISDIR(inode->i_mode) && | |
87 | !S_ISLNK(inode->i_mode)) | |
88 | goto out_put; | |
89 | ||
90 | ||
91 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
92 | ||
93 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
94 | /* | |
95 | * This handle only contains an fsid, zero the rest. | |
96 | */ | |
97 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
98 | hsize = sizeof(xfs_fsid_t); | |
99 | } else { | |
c6143911 CH |
100 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
101 | sizeof(handle.ha_fid.fid_len); | |
102 | handle.ha_fid.fid_pad = 0; | |
9e9a2674 | 103 | handle.ha_fid.fid_gen = inode->i_generation; |
c6143911 | 104 | handle.ha_fid.fid_ino = ip->i_ino; |
3398a400 | 105 | hsize = sizeof(xfs_handle_t); |
1da177e4 LT |
106 | } |
107 | ||
4346cdd4 | 108 | error = -EFAULT; |
743bb465 | 109 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
110 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
111 | goto out_put; | |
1da177e4 | 112 | |
4346cdd4 CH |
113 | error = 0; |
114 | ||
115 | out_put: | |
116 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 117 | fdput(f); |
4346cdd4 CH |
118 | else |
119 | path_put(&path); | |
120 | return error; | |
1da177e4 LT |
121 | } |
122 | ||
1da177e4 | 123 | /* |
d296d30a CH |
124 | * No need to do permission checks on the various pathname components |
125 | * as the handle operations are privileged. | |
1da177e4 LT |
126 | */ |
127 | STATIC int | |
d296d30a CH |
128 | xfs_handle_acceptable( |
129 | void *context, | |
130 | struct dentry *dentry) | |
131 | { | |
132 | return 1; | |
133 | } | |
134 | ||
135 | /* | |
136 | * Convert userspace handle data into a dentry. | |
137 | */ | |
138 | struct dentry * | |
139 | xfs_handle_to_dentry( | |
140 | struct file *parfilp, | |
141 | void __user *uhandle, | |
142 | u32 hlen) | |
1da177e4 | 143 | { |
1da177e4 | 144 | xfs_handle_t handle; |
d296d30a | 145 | struct xfs_fid64 fid; |
1da177e4 LT |
146 | |
147 | /* | |
148 | * Only allow handle opens under a directory. | |
149 | */ | |
496ad9aa | 150 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
151 | return ERR_PTR(-ENOTDIR); |
152 | ||
153 | if (hlen != sizeof(xfs_handle_t)) | |
154 | return ERR_PTR(-EINVAL); | |
155 | if (copy_from_user(&handle, uhandle, hlen)) | |
156 | return ERR_PTR(-EFAULT); | |
157 | if (handle.ha_fid.fid_len != | |
158 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
159 | return ERR_PTR(-EINVAL); | |
160 | ||
161 | memset(&fid, 0, sizeof(struct fid)); | |
162 | fid.ino = handle.ha_fid.fid_ino; | |
163 | fid.gen = handle.ha_fid.fid_gen; | |
164 | ||
165 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
166 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
167 | xfs_handle_acceptable, NULL); | |
168 | } | |
1da177e4 | 169 | |
d296d30a CH |
170 | STATIC struct dentry * |
171 | xfs_handlereq_to_dentry( | |
172 | struct file *parfilp, | |
173 | xfs_fsop_handlereq_t *hreq) | |
174 | { | |
175 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
176 | } |
177 | ||
d5547f9f | 178 | int |
1da177e4 | 179 | xfs_open_by_handle( |
1da177e4 | 180 | struct file *parfilp, |
d296d30a | 181 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 182 | { |
745ca247 | 183 | const struct cred *cred = current_cred(); |
1da177e4 | 184 | int error; |
d296d30a | 185 | int fd; |
1da177e4 LT |
186 | int permflag; |
187 | struct file *filp; | |
188 | struct inode *inode; | |
189 | struct dentry *dentry; | |
1a1d7724 | 190 | fmode_t fmode; |
765927b2 | 191 | struct path path; |
1da177e4 LT |
192 | |
193 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 194 | return -EPERM; |
1da177e4 | 195 | |
d296d30a CH |
196 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
197 | if (IS_ERR(dentry)) | |
198 | return PTR_ERR(dentry); | |
2b0143b5 | 199 | inode = d_inode(dentry); |
1da177e4 LT |
200 | |
201 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
202 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
b474c7ae | 203 | error = -EPERM; |
d296d30a | 204 | goto out_dput; |
1da177e4 LT |
205 | } |
206 | ||
207 | #if BITS_PER_LONG != 32 | |
743bb465 | 208 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 209 | #endif |
d296d30a | 210 | |
743bb465 | 211 | permflag = hreq->oflags; |
1a1d7724 | 212 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 213 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 214 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
b474c7ae | 215 | error = -EPERM; |
d296d30a | 216 | goto out_dput; |
1da177e4 LT |
217 | } |
218 | ||
1a1d7724 | 219 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
337684a1 | 220 | error = -EPERM; |
d296d30a | 221 | goto out_dput; |
1da177e4 LT |
222 | } |
223 | ||
224 | /* Can't write directories. */ | |
1a1d7724 | 225 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
b474c7ae | 226 | error = -EISDIR; |
d296d30a | 227 | goto out_dput; |
1da177e4 LT |
228 | } |
229 | ||
862a6293 | 230 | fd = get_unused_fd_flags(0); |
d296d30a CH |
231 | if (fd < 0) { |
232 | error = fd; | |
233 | goto out_dput; | |
1da177e4 LT |
234 | } |
235 | ||
765927b2 AV |
236 | path.mnt = parfilp->f_path.mnt; |
237 | path.dentry = dentry; | |
238 | filp = dentry_open(&path, hreq->oflags, cred); | |
239 | dput(dentry); | |
1da177e4 | 240 | if (IS_ERR(filp)) { |
d296d30a CH |
241 | put_unused_fd(fd); |
242 | return PTR_ERR(filp); | |
1da177e4 | 243 | } |
4d4be482 | 244 | |
03209378 | 245 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 246 | filp->f_flags |= O_NOATIME; |
4d4be482 | 247 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 248 | } |
1da177e4 | 249 | |
d296d30a CH |
250 | fd_install(fd, filp); |
251 | return fd; | |
252 | ||
253 | out_dput: | |
254 | dput(dentry); | |
255 | return error; | |
1da177e4 LT |
256 | } |
257 | ||
d5547f9f | 258 | int |
1da177e4 | 259 | xfs_readlink_by_handle( |
d296d30a CH |
260 | struct file *parfilp, |
261 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 262 | { |
d296d30a | 263 | struct dentry *dentry; |
1da177e4 | 264 | __u32 olen; |
804c83c3 | 265 | int error; |
1da177e4 LT |
266 | |
267 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 268 | return -EPERM; |
1da177e4 | 269 | |
d296d30a CH |
270 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
271 | if (IS_ERR(dentry)) | |
272 | return PTR_ERR(dentry); | |
1da177e4 LT |
273 | |
274 | /* Restrict this handle operation to symlinks only. */ | |
fd4a0edf | 275 | if (!d_is_symlink(dentry)) { |
b474c7ae | 276 | error = -EINVAL; |
d296d30a | 277 | goto out_dput; |
1da177e4 LT |
278 | } |
279 | ||
743bb465 | 280 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
b474c7ae | 281 | error = -EFAULT; |
d296d30a | 282 | goto out_dput; |
1da177e4 | 283 | } |
1da177e4 | 284 | |
fd4a0edf | 285 | error = vfs_readlink(dentry, hreq->ohandle, olen); |
67fcaa73 | 286 | |
d296d30a CH |
287 | out_dput: |
288 | dput(dentry); | |
804c83c3 | 289 | return error; |
1da177e4 LT |
290 | } |
291 | ||
c24b5dfa DC |
292 | int |
293 | xfs_set_dmattrs( | |
294 | xfs_inode_t *ip, | |
65a7935d DW |
295 | uint evmask, |
296 | uint16_t state) | |
c24b5dfa DC |
297 | { |
298 | xfs_mount_t *mp = ip->i_mount; | |
299 | xfs_trans_t *tp; | |
300 | int error; | |
301 | ||
302 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 303 | return -EPERM; |
c24b5dfa DC |
304 | |
305 | if (XFS_FORCED_SHUTDOWN(mp)) | |
2451337d | 306 | return -EIO; |
c24b5dfa | 307 | |
253f4911 CH |
308 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp); |
309 | if (error) | |
c24b5dfa | 310 | return error; |
253f4911 | 311 | |
c24b5dfa DC |
312 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
313 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
314 | ||
315 | ip->i_d.di_dmevmask = evmask; | |
316 | ip->i_d.di_dmstate = state; | |
317 | ||
318 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
70393313 | 319 | error = xfs_trans_commit(tp); |
c24b5dfa DC |
320 | |
321 | return error; | |
322 | } | |
323 | ||
1da177e4 LT |
324 | STATIC int |
325 | xfs_fssetdm_by_handle( | |
d296d30a CH |
326 | struct file *parfilp, |
327 | void __user *arg) | |
1da177e4 LT |
328 | { |
329 | int error; | |
330 | struct fsdmidata fsd; | |
331 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 332 | struct dentry *dentry; |
1da177e4 LT |
333 | |
334 | if (!capable(CAP_MKNOD)) | |
b474c7ae | 335 | return -EPERM; |
1da177e4 | 336 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) |
b474c7ae | 337 | return -EFAULT; |
1da177e4 | 338 | |
d9457dc0 JK |
339 | error = mnt_want_write_file(parfilp); |
340 | if (error) | |
341 | return error; | |
342 | ||
d296d30a | 343 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
344 | if (IS_ERR(dentry)) { |
345 | mnt_drop_write_file(parfilp); | |
d296d30a | 346 | return PTR_ERR(dentry); |
d9457dc0 | 347 | } |
1da177e4 | 348 | |
2b0143b5 | 349 | if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) { |
b474c7ae | 350 | error = -EPERM; |
6e7f75ea | 351 | goto out; |
1da177e4 LT |
352 | } |
353 | ||
354 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
b474c7ae | 355 | error = -EFAULT; |
6e7f75ea | 356 | goto out; |
1da177e4 LT |
357 | } |
358 | ||
2b0143b5 | 359 | error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask, |
6e7f75ea | 360 | fsd.fsd_dmstate); |
1da177e4 | 361 | |
6e7f75ea | 362 | out: |
d9457dc0 | 363 | mnt_drop_write_file(parfilp); |
d296d30a | 364 | dput(dentry); |
6e7f75ea | 365 | return error; |
1da177e4 LT |
366 | } |
367 | ||
368 | STATIC int | |
369 | xfs_attrlist_by_handle( | |
d296d30a CH |
370 | struct file *parfilp, |
371 | void __user *arg) | |
1da177e4 | 372 | { |
d296d30a | 373 | int error = -ENOMEM; |
1da177e4 | 374 | attrlist_cursor_kern_t *cursor; |
0facef7f | 375 | struct xfs_fsop_attrlist_handlereq __user *p = arg; |
1da177e4 | 376 | xfs_fsop_attrlist_handlereq_t al_hreq; |
d296d30a | 377 | struct dentry *dentry; |
1da177e4 LT |
378 | char *kbuf; |
379 | ||
380 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 381 | return -EPERM; |
1da177e4 | 382 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) |
b474c7ae | 383 | return -EFAULT; |
071c529e | 384 | if (al_hreq.buflen < sizeof(struct attrlist) || |
4e247614 | 385 | al_hreq.buflen > XFS_XATTR_LIST_MAX) |
b474c7ae | 386 | return -EINVAL; |
1da177e4 | 387 | |
90ad58a8 CH |
388 | /* |
389 | * Reject flags, only allow namespaces. | |
390 | */ | |
391 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
b474c7ae | 392 | return -EINVAL; |
90ad58a8 | 393 | |
d296d30a CH |
394 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
395 | if (IS_ERR(dentry)) | |
396 | return PTR_ERR(dentry); | |
1da177e4 | 397 | |
fdd3ccee DC |
398 | kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); |
399 | if (!kbuf) | |
400 | goto out_dput; | |
1da177e4 LT |
401 | |
402 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
2b0143b5 | 403 | error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen, |
739bfb2a | 404 | al_hreq.flags, cursor); |
1da177e4 LT |
405 | if (error) |
406 | goto out_kfree; | |
407 | ||
0facef7f DW |
408 | if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) { |
409 | error = -EFAULT; | |
410 | goto out_kfree; | |
411 | } | |
412 | ||
1da177e4 LT |
413 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) |
414 | error = -EFAULT; | |
415 | ||
fdd3ccee DC |
416 | out_kfree: |
417 | kmem_free(kbuf); | |
418 | out_dput: | |
d296d30a CH |
419 | dput(dentry); |
420 | return error; | |
1da177e4 LT |
421 | } |
422 | ||
28750975 | 423 | int |
1da177e4 | 424 | xfs_attrmulti_attr_get( |
739bfb2a | 425 | struct inode *inode, |
a9273ca5 DC |
426 | unsigned char *name, |
427 | unsigned char __user *ubuf, | |
c8ce540d DW |
428 | uint32_t *len, |
429 | uint32_t flags) | |
1da177e4 | 430 | { |
a9273ca5 | 431 | unsigned char *kbuf; |
2451337d | 432 | int error = -EFAULT; |
e8b0ebaa | 433 | |
51fcbfe7 | 434 | if (*len > XFS_XATTR_SIZE_MAX) |
2451337d | 435 | return -EINVAL; |
fdd3ccee DC |
436 | kbuf = kmem_zalloc_large(*len, KM_SLEEP); |
437 | if (!kbuf) | |
2451337d | 438 | return -ENOMEM; |
1da177e4 | 439 | |
e8b0ebaa | 440 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
441 | if (error) |
442 | goto out_kfree; | |
443 | ||
444 | if (copy_to_user(ubuf, kbuf, *len)) | |
2451337d | 445 | error = -EFAULT; |
1da177e4 | 446 | |
fdd3ccee DC |
447 | out_kfree: |
448 | kmem_free(kbuf); | |
1da177e4 LT |
449 | return error; |
450 | } | |
451 | ||
28750975 | 452 | int |
1da177e4 | 453 | xfs_attrmulti_attr_set( |
739bfb2a | 454 | struct inode *inode, |
a9273ca5 DC |
455 | unsigned char *name, |
456 | const unsigned char __user *ubuf, | |
c8ce540d DW |
457 | uint32_t len, |
458 | uint32_t flags) | |
1da177e4 | 459 | { |
a9273ca5 | 460 | unsigned char *kbuf; |
09cb22d2 | 461 | int error; |
1da177e4 | 462 | |
739bfb2a | 463 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 464 | return -EPERM; |
51fcbfe7 | 465 | if (len > XFS_XATTR_SIZE_MAX) |
2451337d | 466 | return -EINVAL; |
1da177e4 | 467 | |
0e639bde LZ |
468 | kbuf = memdup_user(ubuf, len); |
469 | if (IS_ERR(kbuf)) | |
470 | return PTR_ERR(kbuf); | |
e8b0ebaa | 471 | |
09cb22d2 | 472 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
47e1bf64 AG |
473 | if (!error) |
474 | xfs_forget_acl(inode, name, flags); | |
09cb22d2 AG |
475 | kfree(kbuf); |
476 | return error; | |
1da177e4 LT |
477 | } |
478 | ||
28750975 | 479 | int |
1da177e4 | 480 | xfs_attrmulti_attr_remove( |
739bfb2a | 481 | struct inode *inode, |
a9273ca5 | 482 | unsigned char *name, |
c8ce540d | 483 | uint32_t flags) |
1da177e4 | 484 | { |
47e1bf64 AG |
485 | int error; |
486 | ||
739bfb2a | 487 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 488 | return -EPERM; |
47e1bf64 AG |
489 | error = xfs_attr_remove(XFS_I(inode), name, flags); |
490 | if (!error) | |
491 | xfs_forget_acl(inode, name, flags); | |
492 | return error; | |
1da177e4 LT |
493 | } |
494 | ||
495 | STATIC int | |
496 | xfs_attrmulti_by_handle( | |
42a74f20 | 497 | struct file *parfilp, |
d296d30a | 498 | void __user *arg) |
1da177e4 LT |
499 | { |
500 | int error; | |
501 | xfs_attr_multiop_t *ops; | |
502 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 503 | struct dentry *dentry; |
1da177e4 | 504 | unsigned int i, size; |
a9273ca5 | 505 | unsigned char *attr_name; |
1da177e4 LT |
506 | |
507 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 508 | return -EPERM; |
1da177e4 | 509 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
b474c7ae | 510 | return -EFAULT; |
1da177e4 | 511 | |
fda168c2 ZW |
512 | /* overflow check */ |
513 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
514 | return -E2BIG; | |
515 | ||
d296d30a CH |
516 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
517 | if (IS_ERR(dentry)) | |
518 | return PTR_ERR(dentry); | |
1da177e4 | 519 | |
2451337d | 520 | error = -E2BIG; |
e182f57a | 521 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 522 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 523 | goto out_dput; |
1da177e4 | 524 | |
0e639bde LZ |
525 | ops = memdup_user(am_hreq.ops, size); |
526 | if (IS_ERR(ops)) { | |
2451337d | 527 | error = PTR_ERR(ops); |
d296d30a | 528 | goto out_dput; |
0e639bde | 529 | } |
1da177e4 | 530 | |
2451337d | 531 | error = -ENOMEM; |
1da177e4 LT |
532 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
533 | if (!attr_name) | |
534 | goto out_kfree_ops; | |
535 | ||
1da177e4 LT |
536 | error = 0; |
537 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 538 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
539 | ops[i].am_attrname, MAXNAMELEN); |
540 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
2451337d | 541 | error = -ERANGE; |
1da177e4 LT |
542 | if (ops[i].am_error < 0) |
543 | break; | |
544 | ||
545 | switch (ops[i].am_opcode) { | |
546 | case ATTR_OP_GET: | |
d296d30a | 547 | ops[i].am_error = xfs_attrmulti_attr_get( |
2b0143b5 | 548 | d_inode(dentry), attr_name, |
d296d30a CH |
549 | ops[i].am_attrvalue, &ops[i].am_length, |
550 | ops[i].am_flags); | |
1da177e4 LT |
551 | break; |
552 | case ATTR_OP_SET: | |
a561be71 | 553 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
554 | if (ops[i].am_error) |
555 | break; | |
d296d30a | 556 | ops[i].am_error = xfs_attrmulti_attr_set( |
2b0143b5 | 557 | d_inode(dentry), attr_name, |
d296d30a CH |
558 | ops[i].am_attrvalue, ops[i].am_length, |
559 | ops[i].am_flags); | |
2a79f17e | 560 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
561 | break; |
562 | case ATTR_OP_REMOVE: | |
a561be71 | 563 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
564 | if (ops[i].am_error) |
565 | break; | |
d296d30a | 566 | ops[i].am_error = xfs_attrmulti_attr_remove( |
2b0143b5 | 567 | d_inode(dentry), attr_name, |
d296d30a | 568 | ops[i].am_flags); |
2a79f17e | 569 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
570 | break; |
571 | default: | |
2451337d | 572 | ops[i].am_error = -EINVAL; |
1da177e4 LT |
573 | } |
574 | } | |
575 | ||
576 | if (copy_to_user(am_hreq.ops, ops, size)) | |
2451337d | 577 | error = -EFAULT; |
1da177e4 LT |
578 | |
579 | kfree(attr_name); | |
580 | out_kfree_ops: | |
581 | kfree(ops); | |
d296d30a CH |
582 | out_dput: |
583 | dput(dentry); | |
2451337d | 584 | return error; |
1da177e4 LT |
585 | } |
586 | ||
d5547f9f | 587 | int |
1da177e4 | 588 | xfs_ioc_space( |
1da177e4 | 589 | struct file *filp, |
1da177e4 | 590 | unsigned int cmd, |
743bb465 | 591 | xfs_flock64_t *bf) |
1da177e4 | 592 | { |
8f3e2058 CH |
593 | struct inode *inode = file_inode(filp); |
594 | struct xfs_inode *ip = XFS_I(inode); | |
865e9446 | 595 | struct iattr iattr; |
8add71ca | 596 | enum xfs_prealloc_flags flags = 0; |
c63a8eae | 597 | uint iolock = XFS_IOLOCK_EXCL | XFS_MMAPLOCK_EXCL; |
1da177e4 LT |
598 | int error; |
599 | ||
f37ea149 | 600 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
b474c7ae | 601 | return -EPERM; |
1da177e4 | 602 | |
ad4a8ac4 | 603 | if (!(filp->f_mode & FMODE_WRITE)) |
b474c7ae | 604 | return -EBADF; |
1da177e4 | 605 | |
f37ea149 | 606 | if (!S_ISREG(inode->i_mode)) |
b474c7ae | 607 | return -EINVAL; |
1da177e4 | 608 | |
8add71ca CH |
609 | if (filp->f_flags & O_DSYNC) |
610 | flags |= XFS_PREALLOC_SYNC; | |
8f3e2058 | 611 | if (filp->f_mode & FMODE_NOCMTIME) |
8add71ca CH |
612 | flags |= XFS_PREALLOC_INVISIBLE; |
613 | ||
d9457dc0 JK |
614 | error = mnt_want_write_file(filp); |
615 | if (error) | |
616 | return error; | |
865e9446 | 617 | |
781355c6 | 618 | xfs_ilock(ip, iolock); |
69eb5fa1 | 619 | error = xfs_break_layouts(inode, &iolock, BREAK_UNMAP); |
781355c6 CH |
620 | if (error) |
621 | goto out_unlock; | |
865e9446 CH |
622 | |
623 | switch (bf->l_whence) { | |
624 | case 0: /*SEEK_SET*/ | |
625 | break; | |
626 | case 1: /*SEEK_CUR*/ | |
627 | bf->l_start += filp->f_pos; | |
628 | break; | |
629 | case 2: /*SEEK_END*/ | |
630 | bf->l_start += XFS_ISIZE(ip); | |
631 | break; | |
632 | default: | |
2451337d | 633 | error = -EINVAL; |
865e9446 CH |
634 | goto out_unlock; |
635 | } | |
636 | ||
637 | /* | |
638 | * length of <= 0 for resv/unresv/zero is invalid. length for | |
639 | * alloc/free is ignored completely and we have no idea what userspace | |
640 | * might have set it to, so set it to zero to allow range | |
641 | * checks to pass. | |
642 | */ | |
643 | switch (cmd) { | |
644 | case XFS_IOC_ZERO_RANGE: | |
645 | case XFS_IOC_RESVSP: | |
646 | case XFS_IOC_RESVSP64: | |
647 | case XFS_IOC_UNRESVSP: | |
648 | case XFS_IOC_UNRESVSP64: | |
649 | if (bf->l_len <= 0) { | |
2451337d | 650 | error = -EINVAL; |
865e9446 CH |
651 | goto out_unlock; |
652 | } | |
653 | break; | |
654 | default: | |
655 | bf->l_len = 0; | |
656 | break; | |
657 | } | |
658 | ||
659 | if (bf->l_start < 0 || | |
8add71ca | 660 | bf->l_start > inode->i_sb->s_maxbytes || |
865e9446 | 661 | bf->l_start + bf->l_len < 0 || |
8add71ca | 662 | bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) { |
2451337d | 663 | error = -EINVAL; |
865e9446 CH |
664 | goto out_unlock; |
665 | } | |
666 | ||
667 | switch (cmd) { | |
668 | case XFS_IOC_ZERO_RANGE: | |
8add71ca | 669 | flags |= XFS_PREALLOC_SET; |
865e9446 | 670 | error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); |
865e9446 CH |
671 | break; |
672 | case XFS_IOC_RESVSP: | |
673 | case XFS_IOC_RESVSP64: | |
8add71ca | 674 | flags |= XFS_PREALLOC_SET; |
865e9446 CH |
675 | error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, |
676 | XFS_BMAPI_PREALLOC); | |
865e9446 CH |
677 | break; |
678 | case XFS_IOC_UNRESVSP: | |
679 | case XFS_IOC_UNRESVSP64: | |
680 | error = xfs_free_file_space(ip, bf->l_start, bf->l_len); | |
681 | break; | |
682 | case XFS_IOC_ALLOCSP: | |
683 | case XFS_IOC_ALLOCSP64: | |
684 | case XFS_IOC_FREESP: | |
685 | case XFS_IOC_FREESP64: | |
8add71ca | 686 | flags |= XFS_PREALLOC_CLEAR; |
865e9446 CH |
687 | if (bf->l_start > XFS_ISIZE(ip)) { |
688 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), | |
689 | bf->l_start - XFS_ISIZE(ip), 0); | |
690 | if (error) | |
691 | goto out_unlock; | |
692 | } | |
693 | ||
694 | iattr.ia_valid = ATTR_SIZE; | |
695 | iattr.ia_size = bf->l_start; | |
696 | ||
69bca807 | 697 | error = xfs_vn_setattr_size(file_dentry(filp), &iattr); |
865e9446 CH |
698 | break; |
699 | default: | |
700 | ASSERT(0); | |
2451337d | 701 | error = -EINVAL; |
865e9446 CH |
702 | } |
703 | ||
704 | if (error) | |
705 | goto out_unlock; | |
706 | ||
8add71ca | 707 | error = xfs_update_prealloc_flags(ip, flags); |
865e9446 CH |
708 | |
709 | out_unlock: | |
781355c6 | 710 | xfs_iunlock(ip, iolock); |
d9457dc0 | 711 | mnt_drop_write_file(filp); |
2451337d | 712 | return error; |
1da177e4 LT |
713 | } |
714 | ||
715 | STATIC int | |
716 | xfs_ioc_bulkstat( | |
717 | xfs_mount_t *mp, | |
718 | unsigned int cmd, | |
719 | void __user *arg) | |
720 | { | |
721 | xfs_fsop_bulkreq_t bulkreq; | |
722 | int count; /* # of records returned */ | |
723 | xfs_ino_t inlast; /* last inode number */ | |
724 | int done; | |
725 | int error; | |
726 | ||
727 | /* done = 1 if there are more stats to get and if bulkstat */ | |
728 | /* should be called again (unused here, but used in dmapi) */ | |
729 | ||
730 | if (!capable(CAP_SYS_ADMIN)) | |
731 | return -EPERM; | |
732 | ||
733 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 734 | return -EIO; |
1da177e4 LT |
735 | |
736 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
b474c7ae | 737 | return -EFAULT; |
1da177e4 LT |
738 | |
739 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
b474c7ae | 740 | return -EFAULT; |
1da177e4 LT |
741 | |
742 | if ((count = bulkreq.icount) <= 0) | |
b474c7ae | 743 | return -EINVAL; |
1da177e4 | 744 | |
cd57e594 | 745 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 746 | return -EINVAL; |
cd57e594 | 747 | |
1da177e4 LT |
748 | if (cmd == XFS_IOC_FSINUMBERS) |
749 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 750 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 | 751 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
d716f8ee CH |
752 | error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer, |
753 | sizeof(xfs_bstat_t), NULL, &done); | |
cd57e594 | 754 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
755 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
756 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
757 | &done); | |
1da177e4 LT |
758 | |
759 | if (error) | |
2451337d | 760 | return error; |
1da177e4 LT |
761 | |
762 | if (bulkreq.ocount != NULL) { | |
763 | if (copy_to_user(bulkreq.lastip, &inlast, | |
764 | sizeof(xfs_ino_t))) | |
b474c7ae | 765 | return -EFAULT; |
1da177e4 LT |
766 | |
767 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
b474c7ae | 768 | return -EFAULT; |
1da177e4 LT |
769 | } |
770 | ||
771 | return 0; | |
772 | } | |
773 | ||
1da177e4 LT |
774 | STATIC int |
775 | xfs_ioc_fsgeometry( | |
1b6d968d DC |
776 | struct xfs_mount *mp, |
777 | void __user *arg, | |
778 | int struct_version) | |
1da177e4 | 779 | { |
1b6d968d DC |
780 | struct xfs_fsop_geom fsgeo; |
781 | size_t len; | |
1da177e4 | 782 | |
91083269 | 783 | xfs_fs_geometry(&mp->m_sb, &fsgeo, struct_version); |
1da177e4 | 784 | |
1b6d968d DC |
785 | if (struct_version <= 3) |
786 | len = sizeof(struct xfs_fsop_geom_v1); | |
787 | else if (struct_version == 4) | |
788 | len = sizeof(struct xfs_fsop_geom_v4); | |
c23232d4 DW |
789 | else { |
790 | xfs_fsop_geom_health(mp, &fsgeo); | |
1b6d968d | 791 | len = sizeof(fsgeo); |
c23232d4 | 792 | } |
1b6d968d DC |
793 | |
794 | if (copy_to_user(arg, &fsgeo, len)) | |
b474c7ae | 795 | return -EFAULT; |
1da177e4 LT |
796 | return 0; |
797 | } | |
798 | ||
7cd5006b DW |
799 | STATIC int |
800 | xfs_ioc_ag_geometry( | |
801 | struct xfs_mount *mp, | |
802 | void __user *arg) | |
803 | { | |
804 | struct xfs_ag_geometry ageo; | |
805 | int error; | |
806 | ||
807 | if (copy_from_user(&ageo, arg, sizeof(ageo))) | |
808 | return -EFAULT; | |
809 | ||
810 | error = xfs_ag_get_geometry(mp, ageo.ag_number, &ageo); | |
811 | if (error) | |
812 | return error; | |
813 | ||
814 | if (copy_to_user(arg, &ageo, sizeof(ageo))) | |
815 | return -EFAULT; | |
816 | return 0; | |
817 | } | |
818 | ||
1da177e4 LT |
819 | /* |
820 | * Linux extended inode flags interface. | |
821 | */ | |
1da177e4 LT |
822 | |
823 | STATIC unsigned int | |
824 | xfs_merge_ioc_xflags( | |
825 | unsigned int flags, | |
826 | unsigned int start) | |
827 | { | |
828 | unsigned int xflags = start; | |
829 | ||
39058a0e | 830 | if (flags & FS_IMMUTABLE_FL) |
e7b89481 | 831 | xflags |= FS_XFLAG_IMMUTABLE; |
1da177e4 | 832 | else |
e7b89481 | 833 | xflags &= ~FS_XFLAG_IMMUTABLE; |
39058a0e | 834 | if (flags & FS_APPEND_FL) |
e7b89481 | 835 | xflags |= FS_XFLAG_APPEND; |
1da177e4 | 836 | else |
e7b89481 | 837 | xflags &= ~FS_XFLAG_APPEND; |
39058a0e | 838 | if (flags & FS_SYNC_FL) |
e7b89481 | 839 | xflags |= FS_XFLAG_SYNC; |
1da177e4 | 840 | else |
e7b89481 | 841 | xflags &= ~FS_XFLAG_SYNC; |
39058a0e | 842 | if (flags & FS_NOATIME_FL) |
e7b89481 | 843 | xflags |= FS_XFLAG_NOATIME; |
1da177e4 | 844 | else |
e7b89481 | 845 | xflags &= ~FS_XFLAG_NOATIME; |
39058a0e | 846 | if (flags & FS_NODUMP_FL) |
e7b89481 | 847 | xflags |= FS_XFLAG_NODUMP; |
1da177e4 | 848 | else |
e7b89481 | 849 | xflags &= ~FS_XFLAG_NODUMP; |
1da177e4 LT |
850 | |
851 | return xflags; | |
852 | } | |
853 | ||
854 | STATIC unsigned int | |
855 | xfs_di2lxflags( | |
c8ce540d | 856 | uint16_t di_flags) |
1da177e4 LT |
857 | { |
858 | unsigned int flags = 0; | |
859 | ||
860 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 861 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 862 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 863 | flags |= FS_APPEND_FL; |
1da177e4 | 864 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 865 | flags |= FS_SYNC_FL; |
1da177e4 | 866 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 867 | flags |= FS_NOATIME_FL; |
1da177e4 | 868 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 869 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
870 | return flags; |
871 | } | |
872 | ||
c83bfab1 CH |
873 | STATIC int |
874 | xfs_ioc_fsgetxattr( | |
875 | xfs_inode_t *ip, | |
876 | int attr, | |
877 | void __user *arg) | |
878 | { | |
879 | struct fsxattr fa; | |
880 | ||
a122eb2f DR |
881 | memset(&fa, 0, sizeof(struct fsxattr)); |
882 | ||
c83bfab1 CH |
883 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
884 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
885 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
f7ca3522 DW |
886 | fa.fsx_cowextsize = ip->i_d.di_cowextsize << |
887 | ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 888 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
889 | |
890 | if (attr) { | |
891 | if (ip->i_afp) { | |
892 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
5d829300 | 893 | fa.fsx_nextents = xfs_iext_count(ip->i_afp); |
c83bfab1 CH |
894 | else |
895 | fa.fsx_nextents = ip->i_d.di_anextents; | |
896 | } else | |
897 | fa.fsx_nextents = 0; | |
898 | } else { | |
899 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
5d829300 | 900 | fa.fsx_nextents = xfs_iext_count(&ip->i_df); |
c83bfab1 CH |
901 | else |
902 | fa.fsx_nextents = ip->i_d.di_nextents; | |
903 | } | |
904 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
905 | ||
906 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
907 | return -EFAULT; | |
908 | return 0; | |
909 | } | |
910 | ||
dd60687e CH |
911 | STATIC uint16_t |
912 | xfs_flags2diflags( | |
25fe55e8 CH |
913 | struct xfs_inode *ip, |
914 | unsigned int xflags) | |
915 | { | |
25fe55e8 | 916 | /* can't set PREALLOC this way, just preserve it */ |
dd60687e CH |
917 | uint16_t di_flags = |
918 | (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
919 | ||
e7b89481 | 920 | if (xflags & FS_XFLAG_IMMUTABLE) |
25fe55e8 | 921 | di_flags |= XFS_DIFLAG_IMMUTABLE; |
e7b89481 | 922 | if (xflags & FS_XFLAG_APPEND) |
25fe55e8 | 923 | di_flags |= XFS_DIFLAG_APPEND; |
e7b89481 | 924 | if (xflags & FS_XFLAG_SYNC) |
25fe55e8 | 925 | di_flags |= XFS_DIFLAG_SYNC; |
e7b89481 | 926 | if (xflags & FS_XFLAG_NOATIME) |
25fe55e8 | 927 | di_flags |= XFS_DIFLAG_NOATIME; |
e7b89481 | 928 | if (xflags & FS_XFLAG_NODUMP) |
25fe55e8 | 929 | di_flags |= XFS_DIFLAG_NODUMP; |
e7b89481 | 930 | if (xflags & FS_XFLAG_NODEFRAG) |
25fe55e8 | 931 | di_flags |= XFS_DIFLAG_NODEFRAG; |
e7b89481 | 932 | if (xflags & FS_XFLAG_FILESTREAM) |
25fe55e8 | 933 | di_flags |= XFS_DIFLAG_FILESTREAM; |
c19b3b05 | 934 | if (S_ISDIR(VFS_I(ip)->i_mode)) { |
e7b89481 | 935 | if (xflags & FS_XFLAG_RTINHERIT) |
25fe55e8 | 936 | di_flags |= XFS_DIFLAG_RTINHERIT; |
e7b89481 | 937 | if (xflags & FS_XFLAG_NOSYMLINKS) |
25fe55e8 | 938 | di_flags |= XFS_DIFLAG_NOSYMLINKS; |
e7b89481 | 939 | if (xflags & FS_XFLAG_EXTSZINHERIT) |
25fe55e8 | 940 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; |
e7b89481 | 941 | if (xflags & FS_XFLAG_PROJINHERIT) |
9336e3a7 | 942 | di_flags |= XFS_DIFLAG_PROJINHERIT; |
c19b3b05 | 943 | } else if (S_ISREG(VFS_I(ip)->i_mode)) { |
e7b89481 | 944 | if (xflags & FS_XFLAG_REALTIME) |
25fe55e8 | 945 | di_flags |= XFS_DIFLAG_REALTIME; |
e7b89481 | 946 | if (xflags & FS_XFLAG_EXTSIZE) |
25fe55e8 CH |
947 | di_flags |= XFS_DIFLAG_EXTSIZE; |
948 | } | |
58f88ca2 | 949 | |
dd60687e CH |
950 | return di_flags; |
951 | } | |
952 | ||
953 | STATIC uint64_t | |
954 | xfs_flags2diflags2( | |
955 | struct xfs_inode *ip, | |
956 | unsigned int xflags) | |
957 | { | |
958 | uint64_t di_flags2 = | |
959 | (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK); | |
58f88ca2 | 960 | |
58f88ca2 DC |
961 | if (xflags & FS_XFLAG_DAX) |
962 | di_flags2 |= XFS_DIFLAG2_DAX; | |
f7ca3522 DW |
963 | if (xflags & FS_XFLAG_COWEXTSIZE) |
964 | di_flags2 |= XFS_DIFLAG2_COWEXTSIZE; | |
58f88ca2 | 965 | |
dd60687e | 966 | return di_flags2; |
25fe55e8 CH |
967 | } |
968 | ||
f13fae2d CH |
969 | STATIC void |
970 | xfs_diflags_to_linux( | |
971 | struct xfs_inode *ip) | |
972 | { | |
e4f75291 | 973 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
974 | unsigned int xflags = xfs_ip2xflags(ip); |
975 | ||
e7b89481 | 976 | if (xflags & FS_XFLAG_IMMUTABLE) |
f13fae2d CH |
977 | inode->i_flags |= S_IMMUTABLE; |
978 | else | |
979 | inode->i_flags &= ~S_IMMUTABLE; | |
e7b89481 | 980 | if (xflags & FS_XFLAG_APPEND) |
f13fae2d CH |
981 | inode->i_flags |= S_APPEND; |
982 | else | |
983 | inode->i_flags &= ~S_APPEND; | |
e7b89481 | 984 | if (xflags & FS_XFLAG_SYNC) |
f13fae2d CH |
985 | inode->i_flags |= S_SYNC; |
986 | else | |
987 | inode->i_flags &= ~S_SYNC; | |
e7b89481 | 988 | if (xflags & FS_XFLAG_NOATIME) |
f13fae2d CH |
989 | inode->i_flags |= S_NOATIME; |
990 | else | |
991 | inode->i_flags &= ~S_NOATIME; | |
742d8429 | 992 | #if 0 /* disabled until the flag switching races are sorted out */ |
58f88ca2 DC |
993 | if (xflags & FS_XFLAG_DAX) |
994 | inode->i_flags |= S_DAX; | |
995 | else | |
996 | inode->i_flags &= ~S_DAX; | |
742d8429 | 997 | #endif |
f13fae2d | 998 | } |
25fe55e8 | 999 | |
29a17c00 DC |
1000 | static int |
1001 | xfs_ioctl_setattr_xflags( | |
1002 | struct xfs_trans *tp, | |
1003 | struct xfs_inode *ip, | |
1004 | struct fsxattr *fa) | |
1005 | { | |
1006 | struct xfs_mount *mp = ip->i_mount; | |
dd60687e | 1007 | uint64_t di_flags2; |
29a17c00 DC |
1008 | |
1009 | /* Can't change realtime flag if any extents are allocated. */ | |
1010 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
e7b89481 | 1011 | XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME)) |
29a17c00 DC |
1012 | return -EINVAL; |
1013 | ||
1014 | /* If realtime flag is set then must have realtime device */ | |
e7b89481 | 1015 | if (fa->fsx_xflags & FS_XFLAG_REALTIME) { |
29a17c00 DC |
1016 | if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || |
1017 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) | |
1018 | return -EINVAL; | |
1019 | } | |
1020 | ||
1987fd74 | 1021 | /* Clear reflink if we are actually able to set the rt flag. */ |
c8e156ac | 1022 | if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip)) |
1987fd74 | 1023 | ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK; |
c8e156ac | 1024 | |
4f435ebe DW |
1025 | /* Don't allow us to set DAX mode for a reflinked file for now. */ |
1026 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip)) | |
1027 | return -EINVAL; | |
1028 | ||
29a17c00 DC |
1029 | /* |
1030 | * Can't modify an immutable/append-only file unless | |
1031 | * we have appropriate permission. | |
1032 | */ | |
1033 | if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) || | |
e7b89481 | 1034 | (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) && |
29a17c00 DC |
1035 | !capable(CAP_LINUX_IMMUTABLE)) |
1036 | return -EPERM; | |
1037 | ||
dd60687e CH |
1038 | /* diflags2 only valid for v3 inodes. */ |
1039 | di_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags); | |
1040 | if (di_flags2 && ip->i_d.di_version < 3) | |
1041 | return -EINVAL; | |
1042 | ||
1043 | ip->i_d.di_flags = xfs_flags2diflags(ip, fa->fsx_xflags); | |
1044 | ip->i_d.di_flags2 = di_flags2; | |
1045 | ||
29a17c00 DC |
1046 | xfs_diflags_to_linux(ip); |
1047 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); | |
1048 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
ff6d6af2 | 1049 | XFS_STATS_INC(mp, xs_ig_attrchg); |
29a17c00 DC |
1050 | return 0; |
1051 | } | |
1052 | ||
3a6a854a DC |
1053 | /* |
1054 | * If we are changing DAX flags, we have to ensure the file is clean and any | |
1055 | * cached objects in the address space are invalidated and removed. This | |
1056 | * requires us to lock out other IO and page faults similar to a truncate | |
1057 | * operation. The locks need to be held until the transaction has been committed | |
1058 | * so that the cache invalidation is atomic with respect to the DAX flag | |
1059 | * manipulation. | |
1060 | */ | |
1061 | static int | |
1062 | xfs_ioctl_setattr_dax_invalidate( | |
1063 | struct xfs_inode *ip, | |
1064 | struct fsxattr *fa, | |
1065 | int *join_flags) | |
1066 | { | |
1067 | struct inode *inode = VFS_I(ip); | |
6851a3db | 1068 | struct super_block *sb = inode->i_sb; |
3a6a854a DC |
1069 | int error; |
1070 | ||
1071 | *join_flags = 0; | |
1072 | ||
e8897529 DC |
1073 | /* |
1074 | * It is only valid to set the DAX flag on regular files and | |
64485437 | 1075 | * directories on filesystems where the block size is equal to the page |
aaacdd25 DW |
1076 | * size. On directories it serves as an inherited hint so we don't |
1077 | * have to check the device for dax support or flush pagecache. | |
e8897529 | 1078 | */ |
64485437 DC |
1079 | if (fa->fsx_xflags & FS_XFLAG_DAX) { |
1080 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) | |
1081 | return -EINVAL; | |
aaacdd25 DW |
1082 | if (S_ISREG(inode->i_mode) && |
1083 | !bdev_dax_supported(xfs_find_bdev_for_inode(VFS_I(ip)), | |
80660f20 | 1084 | sb->s_blocksize)) |
64485437 DC |
1085 | return -EINVAL; |
1086 | } | |
e8897529 | 1087 | |
3a6a854a DC |
1088 | /* If the DAX state is not changing, we have nothing to do here. */ |
1089 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode)) | |
1090 | return 0; | |
1091 | if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode)) | |
1092 | return 0; | |
1093 | ||
aaacdd25 DW |
1094 | if (S_ISDIR(inode->i_mode)) |
1095 | return 0; | |
1096 | ||
3a6a854a DC |
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) |
3de5eab3 | 1144 | goto out_unlock; |
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. | |
80e4e126 DW |
1187 | * |
1188 | * Please keep this function in sync with xfs_scrub_inode_extsize. | |
9b94fcc3 | 1189 | */ |
f92090e9 | 1190 | static int |
d4388d3c DC |
1191 | xfs_ioctl_setattr_check_extsize( |
1192 | struct xfs_inode *ip, | |
1193 | struct fsxattr *fa) | |
1194 | { | |
1195 | struct xfs_mount *mp = ip->i_mount; | |
1196 | ||
c19b3b05 | 1197 | if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode)) |
9b94fcc3 IP |
1198 | return -EINVAL; |
1199 | ||
e7b89481 | 1200 | if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) && |
c19b3b05 | 1201 | !S_ISDIR(VFS_I(ip)->i_mode)) |
9b94fcc3 IP |
1202 | return -EINVAL; |
1203 | ||
c19b3b05 | 1204 | if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents && |
d4388d3c DC |
1205 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize)) |
1206 | return -EINVAL; | |
1207 | ||
d4388d3c DC |
1208 | if (fa->fsx_extsize != 0) { |
1209 | xfs_extlen_t size; | |
1210 | xfs_fsblock_t extsize_fsb; | |
1211 | ||
1212 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1213 | if (extsize_fsb > MAXEXTLEN) | |
1214 | return -EINVAL; | |
1215 | ||
1216 | if (XFS_IS_REALTIME_INODE(ip) || | |
e7b89481 | 1217 | (fa->fsx_xflags & FS_XFLAG_REALTIME)) { |
d4388d3c DC |
1218 | size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog; |
1219 | } else { | |
1220 | size = mp->m_sb.sb_blocksize; | |
1221 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1222 | return -EINVAL; | |
1223 | } | |
1224 | ||
1225 | if (fa->fsx_extsize % size) | |
1226 | return -EINVAL; | |
9b94fcc3 | 1227 | } else |
e7b89481 | 1228 | fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT); |
9b94fcc3 | 1229 | |
d4388d3c DC |
1230 | return 0; |
1231 | } | |
1232 | ||
f7ca3522 DW |
1233 | /* |
1234 | * CoW extent size hint validation rules are: | |
1235 | * | |
1236 | * 1. CoW extent size hint can only be set if reflink is enabled on the fs. | |
1237 | * The inode does not have to have any shared blocks, but it must be a v3. | |
1238 | * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files; | |
1239 | * for a directory, the hint is propagated to new files. | |
1240 | * 3. Can be changed on files & directories at any time. | |
1241 | * 4. CoW extsize hint of 0 turns off hints, clears inode flags. | |
1242 | * 5. Extent size must be a multiple of the appropriate block size. | |
1243 | * 6. The extent size hint must be limited to half the AG size to avoid | |
1244 | * alignment extending the extent beyond the limits of the AG. | |
80e4e126 DW |
1245 | * |
1246 | * Please keep this function in sync with xfs_scrub_inode_cowextsize. | |
f7ca3522 DW |
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. */ | |
c8ce540d | 1291 | if (fa->fsx_projid > (uint16_t)-1 && |
23bd0735 DC |
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 | ||
232b5194 CH |
1530 | static bool |
1531 | xfs_getbmap_format( | |
1532 | struct kgetbmap *p, | |
1533 | struct getbmapx __user *u, | |
1534 | size_t recsize) | |
8a7141a8 | 1535 | { |
232b5194 CH |
1536 | if (put_user(p->bmv_offset, &u->bmv_offset) || |
1537 | put_user(p->bmv_block, &u->bmv_block) || | |
1538 | put_user(p->bmv_length, &u->bmv_length) || | |
1539 | put_user(0, &u->bmv_count) || | |
1540 | put_user(0, &u->bmv_entries)) | |
1541 | return false; | |
1542 | if (recsize < sizeof(struct getbmapx)) | |
1543 | return true; | |
1544 | if (put_user(0, &u->bmv_iflags) || | |
1545 | put_user(p->bmv_oflags, &u->bmv_oflags) || | |
1546 | put_user(0, &u->bmv_unused1) || | |
1547 | put_user(0, &u->bmv_unused2)) | |
1548 | return false; | |
1549 | return true; | |
8a7141a8 ES |
1550 | } |
1551 | ||
1da177e4 LT |
1552 | STATIC int |
1553 | xfs_ioc_getbmap( | |
8f3e2058 | 1554 | struct file *file, |
1da177e4 LT |
1555 | unsigned int cmd, |
1556 | void __user *arg) | |
1557 | { | |
be6324c0 | 1558 | struct getbmapx bmx = { 0 }; |
232b5194 CH |
1559 | struct kgetbmap *buf; |
1560 | size_t recsize; | |
1561 | int error, i; | |
1da177e4 | 1562 | |
232b5194 CH |
1563 | switch (cmd) { |
1564 | case XFS_IOC_GETBMAPA: | |
1565 | bmx.bmv_iflags = BMV_IF_ATTRFORK; | |
1566 | /*FALLTHRU*/ | |
1567 | case XFS_IOC_GETBMAP: | |
1568 | if (file->f_mode & FMODE_NOCMTIME) | |
1569 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; | |
1570 | /* struct getbmap is a strict subset of struct getbmapx. */ | |
1571 | recsize = sizeof(struct getbmap); | |
1572 | break; | |
1573 | case XFS_IOC_GETBMAPX: | |
1574 | recsize = sizeof(struct getbmapx); | |
1575 | break; | |
1576 | default: | |
b474c7ae | 1577 | return -EINVAL; |
232b5194 | 1578 | } |
1da177e4 | 1579 | |
232b5194 | 1580 | if (copy_from_user(&bmx, arg, recsize)) |
b474c7ae | 1581 | return -EFAULT; |
1da177e4 LT |
1582 | |
1583 | if (bmx.bmv_count < 2) | |
b474c7ae | 1584 | return -EINVAL; |
232b5194 CH |
1585 | if (bmx.bmv_count > ULONG_MAX / recsize) |
1586 | return -ENOMEM; | |
1da177e4 | 1587 | |
232b5194 CH |
1588 | buf = kmem_zalloc_large(bmx.bmv_count * sizeof(*buf), 0); |
1589 | if (!buf) | |
1590 | return -ENOMEM; | |
1da177e4 | 1591 | |
232b5194 | 1592 | error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, buf); |
1da177e4 | 1593 | if (error) |
232b5194 | 1594 | goto out_free_buf; |
1da177e4 | 1595 | |
232b5194 CH |
1596 | error = -EFAULT; |
1597 | if (copy_to_user(arg, &bmx, recsize)) | |
1598 | goto out_free_buf; | |
1599 | arg += recsize; | |
1600 | ||
1601 | for (i = 0; i < bmx.bmv_entries; i++) { | |
1602 | if (!xfs_getbmap_format(buf + i, arg, recsize)) | |
1603 | goto out_free_buf; | |
1604 | arg += recsize; | |
1605 | } | |
1da177e4 | 1606 | |
232b5194 CH |
1607 | error = 0; |
1608 | out_free_buf: | |
1609 | kmem_free(buf); | |
132bf672 | 1610 | return error; |
1da177e4 | 1611 | } |
df26cfe8 | 1612 | |
e89c0413 DW |
1613 | struct getfsmap_info { |
1614 | struct xfs_mount *mp; | |
9d17e14c CH |
1615 | struct fsmap_head __user *data; |
1616 | unsigned int idx; | |
e89c0413 DW |
1617 | __u32 last_flags; |
1618 | }; | |
1619 | ||
1620 | STATIC int | |
1621 | xfs_getfsmap_format(struct xfs_fsmap *xfm, void *priv) | |
1622 | { | |
1623 | struct getfsmap_info *info = priv; | |
1624 | struct fsmap fm; | |
1625 | ||
1626 | trace_xfs_getfsmap_mapping(info->mp, xfm); | |
1627 | ||
1628 | info->last_flags = xfm->fmr_flags; | |
1629 | xfs_fsmap_from_internal(&fm, xfm); | |
9d17e14c CH |
1630 | if (copy_to_user(&info->data->fmh_recs[info->idx++], &fm, |
1631 | sizeof(struct fsmap))) | |
e89c0413 DW |
1632 | return -EFAULT; |
1633 | ||
e89c0413 DW |
1634 | return 0; |
1635 | } | |
1636 | ||
1637 | STATIC int | |
1638 | xfs_ioc_getfsmap( | |
1639 | struct xfs_inode *ip, | |
9d17e14c | 1640 | struct fsmap_head __user *arg) |
e89c0413 | 1641 | { |
ef2b67ec | 1642 | struct getfsmap_info info = { NULL }; |
e89c0413 DW |
1643 | struct xfs_fsmap_head xhead = {0}; |
1644 | struct fsmap_head head; | |
1645 | bool aborted = false; | |
1646 | int error; | |
1647 | ||
1648 | if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) | |
1649 | return -EFAULT; | |
1650 | if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || | |
1651 | memchr_inv(head.fmh_keys[0].fmr_reserved, 0, | |
1652 | sizeof(head.fmh_keys[0].fmr_reserved)) || | |
1653 | memchr_inv(head.fmh_keys[1].fmr_reserved, 0, | |
1654 | sizeof(head.fmh_keys[1].fmr_reserved))) | |
1655 | return -EINVAL; | |
1656 | ||
1657 | xhead.fmh_iflags = head.fmh_iflags; | |
1658 | xhead.fmh_count = head.fmh_count; | |
1659 | xfs_fsmap_to_internal(&xhead.fmh_keys[0], &head.fmh_keys[0]); | |
1660 | xfs_fsmap_to_internal(&xhead.fmh_keys[1], &head.fmh_keys[1]); | |
1661 | ||
1662 | trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]); | |
1663 | trace_xfs_getfsmap_high_key(ip->i_mount, &xhead.fmh_keys[1]); | |
1664 | ||
1665 | info.mp = ip->i_mount; | |
9d17e14c | 1666 | info.data = arg; |
e89c0413 DW |
1667 | error = xfs_getfsmap(ip->i_mount, &xhead, xfs_getfsmap_format, &info); |
1668 | if (error == XFS_BTREE_QUERY_RANGE_ABORT) { | |
1669 | error = 0; | |
1670 | aborted = true; | |
1671 | } else if (error) | |
1672 | return error; | |
1673 | ||
1674 | /* If we didn't abort, set the "last" flag in the last fmx */ | |
12e4a381 | 1675 | if (!aborted && info.idx) { |
e89c0413 | 1676 | info.last_flags |= FMR_OF_LAST; |
9d17e14c CH |
1677 | if (copy_to_user(&info.data->fmh_recs[info.idx - 1].fmr_flags, |
1678 | &info.last_flags, sizeof(info.last_flags))) | |
e89c0413 DW |
1679 | return -EFAULT; |
1680 | } | |
1681 | ||
1682 | /* copy back header */ | |
1683 | head.fmh_entries = xhead.fmh_entries; | |
1684 | head.fmh_oflags = xhead.fmh_oflags; | |
1685 | if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) | |
1686 | return -EFAULT; | |
1687 | ||
1688 | return 0; | |
1689 | } | |
1690 | ||
36fd6e86 DW |
1691 | STATIC int |
1692 | xfs_ioc_scrub_metadata( | |
1693 | struct xfs_inode *ip, | |
1694 | void __user *arg) | |
1695 | { | |
1696 | struct xfs_scrub_metadata scrub; | |
1697 | int error; | |
1698 | ||
1699 | if (!capable(CAP_SYS_ADMIN)) | |
1700 | return -EPERM; | |
1701 | ||
1702 | if (copy_from_user(&scrub, arg, sizeof(scrub))) | |
1703 | return -EFAULT; | |
1704 | ||
1705 | error = xfs_scrub_metadata(ip, &scrub); | |
1706 | if (error) | |
1707 | return error; | |
1708 | ||
1709 | if (copy_to_user(arg, &scrub, sizeof(scrub))) | |
1710 | return -EFAULT; | |
1711 | ||
1712 | return 0; | |
1713 | } | |
1714 | ||
a133d952 DC |
1715 | int |
1716 | xfs_ioc_swapext( | |
1717 | xfs_swapext_t *sxp) | |
1718 | { | |
1719 | xfs_inode_t *ip, *tip; | |
1720 | struct fd f, tmp; | |
1721 | int error = 0; | |
1722 | ||
1723 | /* Pull information for the target fd */ | |
1724 | f = fdget((int)sxp->sx_fdtarget); | |
1725 | if (!f.file) { | |
2451337d | 1726 | error = -EINVAL; |
a133d952 DC |
1727 | goto out; |
1728 | } | |
1729 | ||
1730 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1731 | !(f.file->f_mode & FMODE_READ) || | |
1732 | (f.file->f_flags & O_APPEND)) { | |
2451337d | 1733 | error = -EBADF; |
a133d952 DC |
1734 | goto out_put_file; |
1735 | } | |
1736 | ||
1737 | tmp = fdget((int)sxp->sx_fdtmp); | |
1738 | if (!tmp.file) { | |
2451337d | 1739 | error = -EINVAL; |
a133d952 DC |
1740 | goto out_put_file; |
1741 | } | |
1742 | ||
1743 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1744 | !(tmp.file->f_mode & FMODE_READ) || | |
1745 | (tmp.file->f_flags & O_APPEND)) { | |
2451337d | 1746 | error = -EBADF; |
a133d952 DC |
1747 | goto out_put_tmp_file; |
1748 | } | |
1749 | ||
1750 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1751 | IS_SWAPFILE(file_inode(tmp.file))) { | |
2451337d | 1752 | error = -EINVAL; |
a133d952 DC |
1753 | goto out_put_tmp_file; |
1754 | } | |
1755 | ||
7f1b6245 JH |
1756 | /* |
1757 | * We need to ensure that the fds passed in point to XFS inodes | |
1758 | * before we cast and access them as XFS structures as we have no | |
1759 | * control over what the user passes us here. | |
1760 | */ | |
1761 | if (f.file->f_op != &xfs_file_operations || | |
1762 | tmp.file->f_op != &xfs_file_operations) { | |
1763 | error = -EINVAL; | |
1764 | goto out_put_tmp_file; | |
1765 | } | |
1766 | ||
a133d952 DC |
1767 | ip = XFS_I(file_inode(f.file)); |
1768 | tip = XFS_I(file_inode(tmp.file)); | |
1769 | ||
1770 | if (ip->i_mount != tip->i_mount) { | |
2451337d | 1771 | error = -EINVAL; |
a133d952 DC |
1772 | goto out_put_tmp_file; |
1773 | } | |
1774 | ||
1775 | if (ip->i_ino == tip->i_ino) { | |
2451337d | 1776 | error = -EINVAL; |
a133d952 DC |
1777 | goto out_put_tmp_file; |
1778 | } | |
1779 | ||
1780 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
2451337d | 1781 | error = -EIO; |
a133d952 DC |
1782 | goto out_put_tmp_file; |
1783 | } | |
1784 | ||
1785 | error = xfs_swap_extents(ip, tip, sxp); | |
1786 | ||
1787 | out_put_tmp_file: | |
1788 | fdput(tmp); | |
1789 | out_put_file: | |
1790 | fdput(f); | |
1791 | out: | |
1792 | return error; | |
1793 | } | |
1794 | ||
f7664b31 ES |
1795 | static int |
1796 | xfs_ioc_getlabel( | |
1797 | struct xfs_mount *mp, | |
1798 | char __user *user_label) | |
1799 | { | |
1800 | struct xfs_sb *sbp = &mp->m_sb; | |
1801 | char label[XFSLABEL_MAX + 1]; | |
1802 | ||
1803 | /* Paranoia */ | |
1804 | BUILD_BUG_ON(sizeof(sbp->sb_fname) > FSLABEL_MAX); | |
1805 | ||
4bb8b65a AB |
1806 | /* 1 larger than sb_fname, so this ensures a trailing NUL char */ |
1807 | memset(label, 0, sizeof(label)); | |
f7664b31 | 1808 | spin_lock(&mp->m_sb_lock); |
4bb8b65a | 1809 | strncpy(label, sbp->sb_fname, XFSLABEL_MAX); |
f7664b31 ES |
1810 | spin_unlock(&mp->m_sb_lock); |
1811 | ||
4bb8b65a | 1812 | if (copy_to_user(user_label, label, sizeof(label))) |
f7664b31 ES |
1813 | return -EFAULT; |
1814 | return 0; | |
1815 | } | |
1816 | ||
1817 | static int | |
1818 | xfs_ioc_setlabel( | |
1819 | struct file *filp, | |
1820 | struct xfs_mount *mp, | |
1821 | char __user *newlabel) | |
1822 | { | |
1823 | struct xfs_sb *sbp = &mp->m_sb; | |
1824 | char label[XFSLABEL_MAX + 1]; | |
1825 | size_t len; | |
1826 | int error; | |
1827 | ||
1828 | if (!capable(CAP_SYS_ADMIN)) | |
1829 | return -EPERM; | |
1830 | /* | |
1831 | * The generic ioctl allows up to FSLABEL_MAX chars, but XFS is much | |
1832 | * smaller, at 12 bytes. We copy one more to be sure we find the | |
1833 | * (required) NULL character to test the incoming label length. | |
1834 | * NB: The on disk label doesn't need to be null terminated. | |
1835 | */ | |
1836 | if (copy_from_user(label, newlabel, XFSLABEL_MAX + 1)) | |
1837 | return -EFAULT; | |
1838 | len = strnlen(label, XFSLABEL_MAX + 1); | |
1839 | if (len > sizeof(sbp->sb_fname)) | |
1840 | return -EINVAL; | |
1841 | ||
1842 | error = mnt_want_write_file(filp); | |
1843 | if (error) | |
1844 | return error; | |
1845 | ||
1846 | spin_lock(&mp->m_sb_lock); | |
1847 | memset(sbp->sb_fname, 0, sizeof(sbp->sb_fname)); | |
4bb8b65a | 1848 | memcpy(sbp->sb_fname, label, len); |
f7664b31 ES |
1849 | spin_unlock(&mp->m_sb_lock); |
1850 | ||
1851 | /* | |
1852 | * Now we do several things to satisfy userspace. | |
1853 | * In addition to normal logging of the primary superblock, we also | |
1854 | * immediately write these changes to sector zero for the primary, then | |
1855 | * update all backup supers (as xfs_db does for a label change), then | |
1856 | * invalidate the block device page cache. This is so that any prior | |
1857 | * buffered reads from userspace (i.e. from blkid) are invalidated, | |
1858 | * and userspace will see the newly-written label. | |
1859 | */ | |
1860 | error = xfs_sync_sb_buf(mp); | |
1861 | if (error) | |
1862 | goto out; | |
1863 | /* | |
1864 | * growfs also updates backup supers so lock against that. | |
1865 | */ | |
1866 | mutex_lock(&mp->m_growlock); | |
1867 | error = xfs_update_secondary_sbs(mp); | |
1868 | mutex_unlock(&mp->m_growlock); | |
1869 | ||
1870 | invalidate_bdev(mp->m_ddev_targp->bt_bdev); | |
1871 | ||
1872 | out: | |
1873 | mnt_drop_write_file(filp); | |
1874 | return error; | |
1875 | } | |
1876 | ||
4d4be482 CH |
1877 | /* |
1878 | * Note: some of the ioctl's return positive numbers as a | |
1879 | * byte count indicating success, such as readlink_by_handle. | |
1880 | * So we don't "sign flip" like most other routines. This means | |
1881 | * true errors need to be returned as a negative value. | |
1882 | */ | |
1883 | long | |
1884 | xfs_file_ioctl( | |
df26cfe8 | 1885 | struct file *filp, |
df26cfe8 | 1886 | unsigned int cmd, |
4d4be482 | 1887 | unsigned long p) |
df26cfe8 | 1888 | { |
496ad9aa | 1889 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1890 | struct xfs_inode *ip = XFS_I(inode); |
1891 | struct xfs_mount *mp = ip->i_mount; | |
1892 | void __user *arg = (void __user *)p; | |
df26cfe8 LM |
1893 | int error; |
1894 | ||
cca28fb8 | 1895 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1896 | |
1897 | switch (cmd) { | |
a46db608 CH |
1898 | case FITRIM: |
1899 | return xfs_ioc_trim(mp, arg); | |
f7664b31 ES |
1900 | case FS_IOC_GETFSLABEL: |
1901 | return xfs_ioc_getlabel(mp, arg); | |
1902 | case FS_IOC_SETFSLABEL: | |
1903 | return xfs_ioc_setlabel(filp, mp, arg); | |
df26cfe8 LM |
1904 | case XFS_IOC_ALLOCSP: |
1905 | case XFS_IOC_FREESP: | |
1906 | case XFS_IOC_RESVSP: | |
1907 | case XFS_IOC_UNRESVSP: | |
1908 | case XFS_IOC_ALLOCSP64: | |
1909 | case XFS_IOC_FREESP64: | |
1910 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1911 | case XFS_IOC_UNRESVSP64: |
1912 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1913 | xfs_flock64_t bf; |
df26cfe8 | 1914 | |
743bb465 | 1915 | if (copy_from_user(&bf, arg, sizeof(bf))) |
b474c7ae | 1916 | return -EFAULT; |
8f3e2058 | 1917 | return xfs_ioc_space(filp, cmd, &bf); |
743bb465 | 1918 | } |
df26cfe8 LM |
1919 | case XFS_IOC_DIOINFO: { |
1920 | struct dioattr da; | |
1921 | xfs_buftarg_t *target = | |
1922 | XFS_IS_REALTIME_INODE(ip) ? | |
1923 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1924 | ||
7c71ee78 | 1925 | da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; |
df26cfe8 LM |
1926 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1927 | ||
1928 | if (copy_to_user(arg, &da, sizeof(da))) | |
b474c7ae | 1929 | return -EFAULT; |
df26cfe8 LM |
1930 | return 0; |
1931 | } | |
1932 | ||
1933 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1934 | case XFS_IOC_FSBULKSTAT: | |
1935 | case XFS_IOC_FSINUMBERS: | |
1936 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1937 | ||
1938 | case XFS_IOC_FSGEOMETRY_V1: | |
1b6d968d DC |
1939 | return xfs_ioc_fsgeometry(mp, arg, 3); |
1940 | case XFS_IOC_FSGEOMETRY_V4: | |
1941 | return xfs_ioc_fsgeometry(mp, arg, 4); | |
df26cfe8 | 1942 | case XFS_IOC_FSGEOMETRY: |
1b6d968d | 1943 | return xfs_ioc_fsgeometry(mp, arg, 5); |
df26cfe8 | 1944 | |
7cd5006b DW |
1945 | case XFS_IOC_AG_GEOMETRY: |
1946 | return xfs_ioc_ag_geometry(mp, arg); | |
1947 | ||
df26cfe8 LM |
1948 | case XFS_IOC_GETVERSION: |
1949 | return put_user(inode->i_generation, (int __user *)arg); | |
1950 | ||
1951 | case XFS_IOC_FSGETXATTR: | |
1952 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1953 | case XFS_IOC_FSGETXATTRA: | |
1954 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1955 | case XFS_IOC_FSSETXATTR: |
1956 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1957 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1958 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1959 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1960 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1961 | |
1962 | case XFS_IOC_FSSETDM: { | |
1963 | struct fsdmidata dmi; | |
1964 | ||
1965 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
b474c7ae | 1966 | return -EFAULT; |
df26cfe8 | 1967 | |
d9457dc0 JK |
1968 | error = mnt_want_write_file(filp); |
1969 | if (error) | |
1970 | return error; | |
1971 | ||
df26cfe8 LM |
1972 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1973 | dmi.fsd_dmstate); | |
d9457dc0 | 1974 | mnt_drop_write_file(filp); |
2451337d | 1975 | return error; |
df26cfe8 LM |
1976 | } |
1977 | ||
1978 | case XFS_IOC_GETBMAP: | |
1979 | case XFS_IOC_GETBMAPA: | |
df26cfe8 | 1980 | case XFS_IOC_GETBMAPX: |
232b5194 | 1981 | return xfs_ioc_getbmap(filp, cmd, arg); |
df26cfe8 | 1982 | |
e89c0413 DW |
1983 | case FS_IOC_GETFSMAP: |
1984 | return xfs_ioc_getfsmap(ip, arg); | |
1985 | ||
36fd6e86 DW |
1986 | case XFS_IOC_SCRUB_METADATA: |
1987 | return xfs_ioc_scrub_metadata(ip, arg); | |
1988 | ||
df26cfe8 LM |
1989 | case XFS_IOC_FD_TO_HANDLE: |
1990 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1991 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1992 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1993 | |
743bb465 | 1994 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
b474c7ae | 1995 | return -EFAULT; |
743bb465 | 1996 | return xfs_find_handle(cmd, &hreq); |
1997 | } | |
1998 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1999 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 2000 | |
743bb465 | 2001 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 2002 | return -EFAULT; |
d296d30a | 2003 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 2004 | } |
df26cfe8 | 2005 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 2006 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 2007 | |
743bb465 | 2008 | case XFS_IOC_READLINK_BY_HANDLE: { |
2009 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 2010 | |
743bb465 | 2011 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 2012 | return -EFAULT; |
d296d30a | 2013 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 2014 | } |
df26cfe8 | 2015 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 2016 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
2017 | |
2018 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 2019 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
2020 | |
2021 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 2022 | struct xfs_swapext sxp; |
2023 | ||
2024 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
b474c7ae | 2025 | return -EFAULT; |
d9457dc0 JK |
2026 | error = mnt_want_write_file(filp); |
2027 | if (error) | |
2028 | return error; | |
a133d952 | 2029 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 2030 | mnt_drop_write_file(filp); |
2451337d | 2031 | return error; |
df26cfe8 LM |
2032 | } |
2033 | ||
2034 | case XFS_IOC_FSCOUNTS: { | |
2035 | xfs_fsop_counts_t out; | |
2036 | ||
91083269 | 2037 | xfs_fs_counts(mp, &out); |
df26cfe8 LM |
2038 | |
2039 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 2040 | return -EFAULT; |
df26cfe8 LM |
2041 | return 0; |
2042 | } | |
2043 | ||
2044 | case XFS_IOC_SET_RESBLKS: { | |
2045 | xfs_fsop_resblks_t inout; | |
c8ce540d | 2046 | uint64_t in; |
df26cfe8 LM |
2047 | |
2048 | if (!capable(CAP_SYS_ADMIN)) | |
2049 | return -EPERM; | |
2050 | ||
d5db0f97 | 2051 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
b474c7ae | 2052 | return -EROFS; |
d5db0f97 | 2053 | |
df26cfe8 | 2054 | if (copy_from_user(&inout, arg, sizeof(inout))) |
b474c7ae | 2055 | return -EFAULT; |
df26cfe8 | 2056 | |
d9457dc0 JK |
2057 | error = mnt_want_write_file(filp); |
2058 | if (error) | |
2059 | return error; | |
2060 | ||
df26cfe8 LM |
2061 | /* input parameter is passed in resblks field of structure */ |
2062 | in = inout.resblks; | |
2063 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 2064 | mnt_drop_write_file(filp); |
df26cfe8 | 2065 | if (error) |
2451337d | 2066 | return error; |
df26cfe8 LM |
2067 | |
2068 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
b474c7ae | 2069 | return -EFAULT; |
df26cfe8 LM |
2070 | return 0; |
2071 | } | |
2072 | ||
2073 | case XFS_IOC_GET_RESBLKS: { | |
2074 | xfs_fsop_resblks_t out; | |
2075 | ||
2076 | if (!capable(CAP_SYS_ADMIN)) | |
2077 | return -EPERM; | |
2078 | ||
2079 | error = xfs_reserve_blocks(mp, NULL, &out); | |
2080 | if (error) | |
2451337d | 2081 | return error; |
df26cfe8 LM |
2082 | |
2083 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 2084 | return -EFAULT; |
df26cfe8 LM |
2085 | |
2086 | return 0; | |
2087 | } | |
2088 | ||
2089 | case XFS_IOC_FSGROWFSDATA: { | |
2090 | xfs_growfs_data_t in; | |
2091 | ||
df26cfe8 | 2092 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2093 | return -EFAULT; |
df26cfe8 | 2094 | |
d9457dc0 JK |
2095 | error = mnt_want_write_file(filp); |
2096 | if (error) | |
2097 | return error; | |
df26cfe8 | 2098 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 2099 | mnt_drop_write_file(filp); |
2451337d | 2100 | return error; |
df26cfe8 LM |
2101 | } |
2102 | ||
2103 | case XFS_IOC_FSGROWFSLOG: { | |
2104 | xfs_growfs_log_t in; | |
2105 | ||
df26cfe8 | 2106 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2107 | return -EFAULT; |
df26cfe8 | 2108 | |
d9457dc0 JK |
2109 | error = mnt_want_write_file(filp); |
2110 | if (error) | |
2111 | return error; | |
df26cfe8 | 2112 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 2113 | mnt_drop_write_file(filp); |
2451337d | 2114 | return error; |
df26cfe8 LM |
2115 | } |
2116 | ||
2117 | case XFS_IOC_FSGROWFSRT: { | |
2118 | xfs_growfs_rt_t in; | |
2119 | ||
df26cfe8 | 2120 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2121 | return -EFAULT; |
df26cfe8 | 2122 | |
d9457dc0 JK |
2123 | error = mnt_want_write_file(filp); |
2124 | if (error) | |
2125 | return error; | |
df26cfe8 | 2126 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 2127 | mnt_drop_write_file(filp); |
2451337d | 2128 | return error; |
df26cfe8 LM |
2129 | } |
2130 | ||
df26cfe8 | 2131 | case XFS_IOC_GOINGDOWN: { |
c8ce540d | 2132 | uint32_t in; |
df26cfe8 LM |
2133 | |
2134 | if (!capable(CAP_SYS_ADMIN)) | |
2135 | return -EPERM; | |
2136 | ||
c8ce540d | 2137 | if (get_user(in, (uint32_t __user *)arg)) |
b474c7ae | 2138 | return -EFAULT; |
df26cfe8 | 2139 | |
2451337d | 2140 | return xfs_fs_goingdown(mp, in); |
df26cfe8 LM |
2141 | } |
2142 | ||
2143 | case XFS_IOC_ERROR_INJECTION: { | |
2144 | xfs_error_injection_t in; | |
2145 | ||
2146 | if (!capable(CAP_SYS_ADMIN)) | |
2147 | return -EPERM; | |
2148 | ||
2149 | if (copy_from_user(&in, arg, sizeof(in))) | |
b474c7ae | 2150 | return -EFAULT; |
df26cfe8 | 2151 | |
31965ef3 | 2152 | return xfs_errortag_add(mp, in.errtag); |
df26cfe8 LM |
2153 | } |
2154 | ||
2155 | case XFS_IOC_ERROR_CLEARALL: | |
2156 | if (!capable(CAP_SYS_ADMIN)) | |
2157 | return -EPERM; | |
2158 | ||
31965ef3 | 2159 | return xfs_errortag_clearall(mp); |
df26cfe8 | 2160 | |
8ca149de | 2161 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
2162 | struct xfs_fs_eofblocks eofb; |
2163 | struct xfs_eofblocks keofb; | |
8ca149de | 2164 | |
8c567a7f DE |
2165 | if (!capable(CAP_SYS_ADMIN)) |
2166 | return -EPERM; | |
2167 | ||
2168 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 2169 | return -EROFS; |
8c567a7f | 2170 | |
8ca149de | 2171 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
b474c7ae | 2172 | return -EFAULT; |
8ca149de | 2173 | |
b9fe5052 DE |
2174 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
2175 | if (error) | |
2451337d | 2176 | return error; |
8ca149de | 2177 | |
2451337d | 2178 | return xfs_icache_free_eofblocks(mp, &keofb); |
8ca149de BF |
2179 | } |
2180 | ||
df26cfe8 LM |
2181 | default: |
2182 | return -ENOTTY; | |
2183 | } | |
2184 | } |