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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" |
7bf446f8 | 14 | #include "xfs_ioctl.h" |
a4fbe6ab | 15 | #include "xfs_alloc.h" |
1da177e4 | 16 | #include "xfs_rtalloc.h" |
1da177e4 | 17 | #include "xfs_itable.h" |
a844f451 | 18 | #include "xfs_error.h" |
1da177e4 | 19 | #include "xfs_attr.h" |
a844f451 | 20 | #include "xfs_bmap.h" |
68988114 | 21 | #include "xfs_bmap_util.h" |
1da177e4 | 22 | #include "xfs_fsops.h" |
a46db608 | 23 | #include "xfs_discard.h" |
25fe55e8 | 24 | #include "xfs_quota.h" |
d296d30a | 25 | #include "xfs_export.h" |
0b1b213f | 26 | #include "xfs_trace.h" |
8ca149de | 27 | #include "xfs_icache.h" |
c24b5dfa | 28 | #include "xfs_symlink.h" |
a4fbe6ab | 29 | #include "xfs_trans.h" |
47e1bf64 | 30 | #include "xfs_acl.h" |
e89c0413 DW |
31 | #include "xfs_btree.h" |
32 | #include <linux/fsmap.h> | |
33 | #include "xfs_fsmap.h" | |
36fd6e86 | 34 | #include "scrub/xfs_scrub.h" |
c368ebcd | 35 | #include "xfs_sb.h" |
1da177e4 | 36 | |
16f7e0fe | 37 | #include <linux/capability.h> |
5b825c3a | 38 | #include <linux/cred.h> |
1da177e4 LT |
39 | #include <linux/dcache.h> |
40 | #include <linux/mount.h> | |
41 | #include <linux/namei.h> | |
42 | #include <linux/pagemap.h> | |
5a0e3ad6 | 43 | #include <linux/slab.h> |
d296d30a | 44 | #include <linux/exportfs.h> |
1da177e4 LT |
45 | |
46 | /* | |
47 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
48 | * a file or fs handle. | |
49 | * | |
50 | * XFS_IOC_PATH_TO_FSHANDLE | |
51 | * returns fs handle for a mount point or path within that mount point | |
52 | * XFS_IOC_FD_TO_HANDLE | |
53 | * returns full handle for a FD opened in user space | |
54 | * XFS_IOC_PATH_TO_HANDLE | |
55 | * returns full handle for a path | |
56 | */ | |
d5547f9f | 57 | int |
1da177e4 LT |
58 | xfs_find_handle( |
59 | unsigned int cmd, | |
743bb465 | 60 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
61 | { |
62 | int hsize; | |
63 | xfs_handle_t handle; | |
1da177e4 | 64 | struct inode *inode; |
a30b0367 | 65 | struct fd f = {NULL}; |
4346cdd4 | 66 | struct path path; |
2903ff01 | 67 | int error; |
4346cdd4 | 68 | struct xfs_inode *ip; |
1da177e4 | 69 | |
4346cdd4 | 70 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
71 | f = fdget(hreq->fd); |
72 | if (!f.file) | |
4346cdd4 | 73 | return -EBADF; |
496ad9aa | 74 | inode = file_inode(f.file); |
4346cdd4 CH |
75 | } else { |
76 | error = user_lpath((const char __user *)hreq->path, &path); | |
77 | if (error) | |
78 | return error; | |
2b0143b5 | 79 | inode = d_inode(path.dentry); |
1da177e4 | 80 | } |
4346cdd4 CH |
81 | ip = XFS_I(inode); |
82 | ||
83 | /* | |
84 | * We can only generate handles for inodes residing on a XFS filesystem, | |
85 | * and only for regular files, directories or symbolic links. | |
86 | */ | |
87 | error = -EINVAL; | |
88 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
89 | goto out_put; | |
90 | ||
91 | error = -EBADF; | |
92 | if (!S_ISREG(inode->i_mode) && | |
93 | !S_ISDIR(inode->i_mode) && | |
94 | !S_ISLNK(inode->i_mode)) | |
95 | goto out_put; | |
96 | ||
97 | ||
98 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
99 | ||
100 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
101 | /* | |
102 | * This handle only contains an fsid, zero the rest. | |
103 | */ | |
104 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
105 | hsize = sizeof(xfs_fsid_t); | |
106 | } else { | |
c6143911 CH |
107 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
108 | sizeof(handle.ha_fid.fid_len); | |
109 | handle.ha_fid.fid_pad = 0; | |
9e9a2674 | 110 | handle.ha_fid.fid_gen = inode->i_generation; |
c6143911 | 111 | handle.ha_fid.fid_ino = ip->i_ino; |
3398a400 | 112 | hsize = sizeof(xfs_handle_t); |
1da177e4 LT |
113 | } |
114 | ||
4346cdd4 | 115 | error = -EFAULT; |
743bb465 | 116 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
117 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
118 | goto out_put; | |
1da177e4 | 119 | |
4346cdd4 CH |
120 | error = 0; |
121 | ||
122 | out_put: | |
123 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 124 | fdput(f); |
4346cdd4 CH |
125 | else |
126 | path_put(&path); | |
127 | return error; | |
1da177e4 LT |
128 | } |
129 | ||
1da177e4 | 130 | /* |
d296d30a CH |
131 | * No need to do permission checks on the various pathname components |
132 | * as the handle operations are privileged. | |
1da177e4 LT |
133 | */ |
134 | STATIC int | |
d296d30a CH |
135 | xfs_handle_acceptable( |
136 | void *context, | |
137 | struct dentry *dentry) | |
138 | { | |
139 | return 1; | |
140 | } | |
141 | ||
142 | /* | |
143 | * Convert userspace handle data into a dentry. | |
144 | */ | |
145 | struct dentry * | |
146 | xfs_handle_to_dentry( | |
147 | struct file *parfilp, | |
148 | void __user *uhandle, | |
149 | u32 hlen) | |
1da177e4 | 150 | { |
1da177e4 | 151 | xfs_handle_t handle; |
d296d30a | 152 | struct xfs_fid64 fid; |
1da177e4 LT |
153 | |
154 | /* | |
155 | * Only allow handle opens under a directory. | |
156 | */ | |
496ad9aa | 157 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
158 | return ERR_PTR(-ENOTDIR); |
159 | ||
160 | if (hlen != sizeof(xfs_handle_t)) | |
161 | return ERR_PTR(-EINVAL); | |
162 | if (copy_from_user(&handle, uhandle, hlen)) | |
163 | return ERR_PTR(-EFAULT); | |
164 | if (handle.ha_fid.fid_len != | |
165 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
166 | return ERR_PTR(-EINVAL); | |
167 | ||
168 | memset(&fid, 0, sizeof(struct fid)); | |
169 | fid.ino = handle.ha_fid.fid_ino; | |
170 | fid.gen = handle.ha_fid.fid_gen; | |
171 | ||
172 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
173 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
174 | xfs_handle_acceptable, NULL); | |
175 | } | |
1da177e4 | 176 | |
d296d30a CH |
177 | STATIC struct dentry * |
178 | xfs_handlereq_to_dentry( | |
179 | struct file *parfilp, | |
180 | xfs_fsop_handlereq_t *hreq) | |
181 | { | |
182 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
183 | } |
184 | ||
d5547f9f | 185 | int |
1da177e4 | 186 | xfs_open_by_handle( |
1da177e4 | 187 | struct file *parfilp, |
d296d30a | 188 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 189 | { |
745ca247 | 190 | const struct cred *cred = current_cred(); |
1da177e4 | 191 | int error; |
d296d30a | 192 | int fd; |
1da177e4 LT |
193 | int permflag; |
194 | struct file *filp; | |
195 | struct inode *inode; | |
196 | struct dentry *dentry; | |
1a1d7724 | 197 | fmode_t fmode; |
765927b2 | 198 | struct path path; |
1da177e4 LT |
199 | |
200 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 201 | return -EPERM; |
1da177e4 | 202 | |
d296d30a CH |
203 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
204 | if (IS_ERR(dentry)) | |
205 | return PTR_ERR(dentry); | |
2b0143b5 | 206 | inode = d_inode(dentry); |
1da177e4 LT |
207 | |
208 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
209 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
b474c7ae | 210 | error = -EPERM; |
d296d30a | 211 | goto out_dput; |
1da177e4 LT |
212 | } |
213 | ||
214 | #if BITS_PER_LONG != 32 | |
743bb465 | 215 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 216 | #endif |
d296d30a | 217 | |
743bb465 | 218 | permflag = hreq->oflags; |
1a1d7724 | 219 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 220 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 221 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
b474c7ae | 222 | error = -EPERM; |
d296d30a | 223 | goto out_dput; |
1da177e4 LT |
224 | } |
225 | ||
1a1d7724 | 226 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
337684a1 | 227 | error = -EPERM; |
d296d30a | 228 | goto out_dput; |
1da177e4 LT |
229 | } |
230 | ||
231 | /* Can't write directories. */ | |
1a1d7724 | 232 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
b474c7ae | 233 | error = -EISDIR; |
d296d30a | 234 | goto out_dput; |
1da177e4 LT |
235 | } |
236 | ||
862a6293 | 237 | fd = get_unused_fd_flags(0); |
d296d30a CH |
238 | if (fd < 0) { |
239 | error = fd; | |
240 | goto out_dput; | |
1da177e4 LT |
241 | } |
242 | ||
765927b2 AV |
243 | path.mnt = parfilp->f_path.mnt; |
244 | path.dentry = dentry; | |
245 | filp = dentry_open(&path, hreq->oflags, cred); | |
246 | dput(dentry); | |
1da177e4 | 247 | if (IS_ERR(filp)) { |
d296d30a CH |
248 | put_unused_fd(fd); |
249 | return PTR_ERR(filp); | |
1da177e4 | 250 | } |
4d4be482 | 251 | |
03209378 | 252 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 253 | filp->f_flags |= O_NOATIME; |
4d4be482 | 254 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 255 | } |
1da177e4 | 256 | |
d296d30a CH |
257 | fd_install(fd, filp); |
258 | return fd; | |
259 | ||
260 | out_dput: | |
261 | dput(dentry); | |
262 | return error; | |
1da177e4 LT |
263 | } |
264 | ||
d5547f9f | 265 | int |
1da177e4 | 266 | xfs_readlink_by_handle( |
d296d30a CH |
267 | struct file *parfilp, |
268 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 269 | { |
d296d30a | 270 | struct dentry *dentry; |
1da177e4 | 271 | __u32 olen; |
804c83c3 | 272 | int error; |
1da177e4 LT |
273 | |
274 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 275 | return -EPERM; |
1da177e4 | 276 | |
d296d30a CH |
277 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
278 | if (IS_ERR(dentry)) | |
279 | return PTR_ERR(dentry); | |
1da177e4 LT |
280 | |
281 | /* Restrict this handle operation to symlinks only. */ | |
fd4a0edf | 282 | if (!d_is_symlink(dentry)) { |
b474c7ae | 283 | error = -EINVAL; |
d296d30a | 284 | goto out_dput; |
1da177e4 LT |
285 | } |
286 | ||
743bb465 | 287 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
b474c7ae | 288 | error = -EFAULT; |
d296d30a | 289 | goto out_dput; |
1da177e4 | 290 | } |
1da177e4 | 291 | |
fd4a0edf | 292 | error = vfs_readlink(dentry, hreq->ohandle, olen); |
67fcaa73 | 293 | |
d296d30a CH |
294 | out_dput: |
295 | dput(dentry); | |
804c83c3 | 296 | return error; |
1da177e4 LT |
297 | } |
298 | ||
c24b5dfa DC |
299 | int |
300 | xfs_set_dmattrs( | |
301 | xfs_inode_t *ip, | |
65a7935d DW |
302 | uint evmask, |
303 | uint16_t state) | |
c24b5dfa DC |
304 | { |
305 | xfs_mount_t *mp = ip->i_mount; | |
306 | xfs_trans_t *tp; | |
307 | int error; | |
308 | ||
309 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 310 | return -EPERM; |
c24b5dfa DC |
311 | |
312 | if (XFS_FORCED_SHUTDOWN(mp)) | |
2451337d | 313 | return -EIO; |
c24b5dfa | 314 | |
253f4911 CH |
315 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp); |
316 | if (error) | |
c24b5dfa | 317 | return error; |
253f4911 | 318 | |
c24b5dfa DC |
319 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
320 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
321 | ||
322 | ip->i_d.di_dmevmask = evmask; | |
323 | ip->i_d.di_dmstate = state; | |
324 | ||
325 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
70393313 | 326 | error = xfs_trans_commit(tp); |
c24b5dfa DC |
327 | |
328 | return error; | |
329 | } | |
330 | ||
1da177e4 LT |
331 | STATIC int |
332 | xfs_fssetdm_by_handle( | |
d296d30a CH |
333 | struct file *parfilp, |
334 | void __user *arg) | |
1da177e4 LT |
335 | { |
336 | int error; | |
337 | struct fsdmidata fsd; | |
338 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 339 | struct dentry *dentry; |
1da177e4 LT |
340 | |
341 | if (!capable(CAP_MKNOD)) | |
b474c7ae | 342 | return -EPERM; |
1da177e4 | 343 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) |
b474c7ae | 344 | return -EFAULT; |
1da177e4 | 345 | |
d9457dc0 JK |
346 | error = mnt_want_write_file(parfilp); |
347 | if (error) | |
348 | return error; | |
349 | ||
d296d30a | 350 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
351 | if (IS_ERR(dentry)) { |
352 | mnt_drop_write_file(parfilp); | |
d296d30a | 353 | return PTR_ERR(dentry); |
d9457dc0 | 354 | } |
1da177e4 | 355 | |
2b0143b5 | 356 | if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) { |
b474c7ae | 357 | error = -EPERM; |
6e7f75ea | 358 | goto out; |
1da177e4 LT |
359 | } |
360 | ||
361 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
b474c7ae | 362 | error = -EFAULT; |
6e7f75ea | 363 | goto out; |
1da177e4 LT |
364 | } |
365 | ||
2b0143b5 | 366 | error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask, |
6e7f75ea | 367 | fsd.fsd_dmstate); |
1da177e4 | 368 | |
6e7f75ea | 369 | out: |
d9457dc0 | 370 | mnt_drop_write_file(parfilp); |
d296d30a | 371 | dput(dentry); |
6e7f75ea | 372 | return error; |
1da177e4 LT |
373 | } |
374 | ||
375 | STATIC int | |
376 | xfs_attrlist_by_handle( | |
d296d30a CH |
377 | struct file *parfilp, |
378 | void __user *arg) | |
1da177e4 | 379 | { |
d296d30a | 380 | int error = -ENOMEM; |
1da177e4 | 381 | attrlist_cursor_kern_t *cursor; |
0facef7f | 382 | struct xfs_fsop_attrlist_handlereq __user *p = arg; |
1da177e4 | 383 | xfs_fsop_attrlist_handlereq_t al_hreq; |
d296d30a | 384 | struct dentry *dentry; |
1da177e4 LT |
385 | char *kbuf; |
386 | ||
387 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 388 | return -EPERM; |
1da177e4 | 389 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) |
b474c7ae | 390 | return -EFAULT; |
071c529e | 391 | if (al_hreq.buflen < sizeof(struct attrlist) || |
4e247614 | 392 | al_hreq.buflen > XFS_XATTR_LIST_MAX) |
b474c7ae | 393 | return -EINVAL; |
1da177e4 | 394 | |
90ad58a8 CH |
395 | /* |
396 | * Reject flags, only allow namespaces. | |
397 | */ | |
398 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
b474c7ae | 399 | return -EINVAL; |
90ad58a8 | 400 | |
d296d30a CH |
401 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
402 | if (IS_ERR(dentry)) | |
403 | return PTR_ERR(dentry); | |
1da177e4 | 404 | |
fdd3ccee DC |
405 | kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); |
406 | if (!kbuf) | |
407 | goto out_dput; | |
1da177e4 LT |
408 | |
409 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
2b0143b5 | 410 | error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen, |
739bfb2a | 411 | al_hreq.flags, cursor); |
1da177e4 LT |
412 | if (error) |
413 | goto out_kfree; | |
414 | ||
0facef7f DW |
415 | if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) { |
416 | error = -EFAULT; | |
417 | goto out_kfree; | |
418 | } | |
419 | ||
1da177e4 LT |
420 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) |
421 | error = -EFAULT; | |
422 | ||
fdd3ccee DC |
423 | out_kfree: |
424 | kmem_free(kbuf); | |
425 | out_dput: | |
d296d30a CH |
426 | dput(dentry); |
427 | return error; | |
1da177e4 LT |
428 | } |
429 | ||
28750975 | 430 | int |
1da177e4 | 431 | xfs_attrmulti_attr_get( |
739bfb2a | 432 | struct inode *inode, |
a9273ca5 DC |
433 | unsigned char *name, |
434 | unsigned char __user *ubuf, | |
c8ce540d DW |
435 | uint32_t *len, |
436 | uint32_t flags) | |
1da177e4 | 437 | { |
a9273ca5 | 438 | unsigned char *kbuf; |
2451337d | 439 | int error = -EFAULT; |
e8b0ebaa | 440 | |
51fcbfe7 | 441 | if (*len > XFS_XATTR_SIZE_MAX) |
2451337d | 442 | return -EINVAL; |
fdd3ccee DC |
443 | kbuf = kmem_zalloc_large(*len, KM_SLEEP); |
444 | if (!kbuf) | |
2451337d | 445 | return -ENOMEM; |
1da177e4 | 446 | |
e8b0ebaa | 447 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
448 | if (error) |
449 | goto out_kfree; | |
450 | ||
451 | if (copy_to_user(ubuf, kbuf, *len)) | |
2451337d | 452 | error = -EFAULT; |
1da177e4 | 453 | |
fdd3ccee DC |
454 | out_kfree: |
455 | kmem_free(kbuf); | |
1da177e4 LT |
456 | return error; |
457 | } | |
458 | ||
28750975 | 459 | int |
1da177e4 | 460 | xfs_attrmulti_attr_set( |
739bfb2a | 461 | struct inode *inode, |
a9273ca5 DC |
462 | unsigned char *name, |
463 | const unsigned char __user *ubuf, | |
c8ce540d DW |
464 | uint32_t len, |
465 | uint32_t flags) | |
1da177e4 | 466 | { |
a9273ca5 | 467 | unsigned char *kbuf; |
09cb22d2 | 468 | int error; |
1da177e4 | 469 | |
739bfb2a | 470 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 471 | return -EPERM; |
51fcbfe7 | 472 | if (len > XFS_XATTR_SIZE_MAX) |
2451337d | 473 | return -EINVAL; |
1da177e4 | 474 | |
0e639bde LZ |
475 | kbuf = memdup_user(ubuf, len); |
476 | if (IS_ERR(kbuf)) | |
477 | return PTR_ERR(kbuf); | |
e8b0ebaa | 478 | |
09cb22d2 | 479 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
47e1bf64 AG |
480 | if (!error) |
481 | xfs_forget_acl(inode, name, flags); | |
09cb22d2 AG |
482 | kfree(kbuf); |
483 | return error; | |
1da177e4 LT |
484 | } |
485 | ||
28750975 | 486 | int |
1da177e4 | 487 | xfs_attrmulti_attr_remove( |
739bfb2a | 488 | struct inode *inode, |
a9273ca5 | 489 | unsigned char *name, |
c8ce540d | 490 | uint32_t flags) |
1da177e4 | 491 | { |
47e1bf64 AG |
492 | int error; |
493 | ||
739bfb2a | 494 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 495 | return -EPERM; |
47e1bf64 AG |
496 | error = xfs_attr_remove(XFS_I(inode), name, flags); |
497 | if (!error) | |
498 | xfs_forget_acl(inode, name, flags); | |
499 | return error; | |
1da177e4 LT |
500 | } |
501 | ||
502 | STATIC int | |
503 | xfs_attrmulti_by_handle( | |
42a74f20 | 504 | struct file *parfilp, |
d296d30a | 505 | void __user *arg) |
1da177e4 LT |
506 | { |
507 | int error; | |
508 | xfs_attr_multiop_t *ops; | |
509 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 510 | struct dentry *dentry; |
1da177e4 | 511 | unsigned int i, size; |
a9273ca5 | 512 | unsigned char *attr_name; |
1da177e4 LT |
513 | |
514 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 515 | return -EPERM; |
1da177e4 | 516 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
b474c7ae | 517 | return -EFAULT; |
1da177e4 | 518 | |
fda168c2 ZW |
519 | /* overflow check */ |
520 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
521 | return -E2BIG; | |
522 | ||
d296d30a CH |
523 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
524 | if (IS_ERR(dentry)) | |
525 | return PTR_ERR(dentry); | |
1da177e4 | 526 | |
2451337d | 527 | error = -E2BIG; |
e182f57a | 528 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 529 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 530 | goto out_dput; |
1da177e4 | 531 | |
0e639bde LZ |
532 | ops = memdup_user(am_hreq.ops, size); |
533 | if (IS_ERR(ops)) { | |
2451337d | 534 | error = PTR_ERR(ops); |
d296d30a | 535 | goto out_dput; |
0e639bde | 536 | } |
1da177e4 | 537 | |
2451337d | 538 | error = -ENOMEM; |
1da177e4 LT |
539 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
540 | if (!attr_name) | |
541 | goto out_kfree_ops; | |
542 | ||
1da177e4 LT |
543 | error = 0; |
544 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 545 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
546 | ops[i].am_attrname, MAXNAMELEN); |
547 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
2451337d | 548 | error = -ERANGE; |
1da177e4 LT |
549 | if (ops[i].am_error < 0) |
550 | break; | |
551 | ||
552 | switch (ops[i].am_opcode) { | |
553 | case ATTR_OP_GET: | |
d296d30a | 554 | ops[i].am_error = xfs_attrmulti_attr_get( |
2b0143b5 | 555 | d_inode(dentry), attr_name, |
d296d30a CH |
556 | ops[i].am_attrvalue, &ops[i].am_length, |
557 | ops[i].am_flags); | |
1da177e4 LT |
558 | break; |
559 | case ATTR_OP_SET: | |
a561be71 | 560 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
561 | if (ops[i].am_error) |
562 | break; | |
d296d30a | 563 | ops[i].am_error = xfs_attrmulti_attr_set( |
2b0143b5 | 564 | d_inode(dentry), attr_name, |
d296d30a CH |
565 | ops[i].am_attrvalue, ops[i].am_length, |
566 | ops[i].am_flags); | |
2a79f17e | 567 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
568 | break; |
569 | case ATTR_OP_REMOVE: | |
a561be71 | 570 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
571 | if (ops[i].am_error) |
572 | break; | |
d296d30a | 573 | ops[i].am_error = xfs_attrmulti_attr_remove( |
2b0143b5 | 574 | d_inode(dentry), attr_name, |
d296d30a | 575 | ops[i].am_flags); |
2a79f17e | 576 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
577 | break; |
578 | default: | |
2451337d | 579 | ops[i].am_error = -EINVAL; |
1da177e4 LT |
580 | } |
581 | } | |
582 | ||
583 | if (copy_to_user(am_hreq.ops, ops, size)) | |
2451337d | 584 | error = -EFAULT; |
1da177e4 LT |
585 | |
586 | kfree(attr_name); | |
587 | out_kfree_ops: | |
588 | kfree(ops); | |
d296d30a CH |
589 | out_dput: |
590 | dput(dentry); | |
2451337d | 591 | return error; |
1da177e4 LT |
592 | } |
593 | ||
d5547f9f | 594 | int |
1da177e4 | 595 | xfs_ioc_space( |
1da177e4 | 596 | struct file *filp, |
1da177e4 | 597 | unsigned int cmd, |
743bb465 | 598 | xfs_flock64_t *bf) |
1da177e4 | 599 | { |
8f3e2058 CH |
600 | struct inode *inode = file_inode(filp); |
601 | struct xfs_inode *ip = XFS_I(inode); | |
865e9446 | 602 | struct iattr iattr; |
8add71ca | 603 | enum xfs_prealloc_flags flags = 0; |
c63a8eae | 604 | uint iolock = XFS_IOLOCK_EXCL | XFS_MMAPLOCK_EXCL; |
1da177e4 LT |
605 | int error; |
606 | ||
f37ea149 | 607 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
b474c7ae | 608 | return -EPERM; |
1da177e4 | 609 | |
ad4a8ac4 | 610 | if (!(filp->f_mode & FMODE_WRITE)) |
b474c7ae | 611 | return -EBADF; |
1da177e4 | 612 | |
f37ea149 | 613 | if (!S_ISREG(inode->i_mode)) |
b474c7ae | 614 | return -EINVAL; |
1da177e4 | 615 | |
8add71ca CH |
616 | if (filp->f_flags & O_DSYNC) |
617 | flags |= XFS_PREALLOC_SYNC; | |
8f3e2058 | 618 | if (filp->f_mode & FMODE_NOCMTIME) |
8add71ca CH |
619 | flags |= XFS_PREALLOC_INVISIBLE; |
620 | ||
d9457dc0 JK |
621 | error = mnt_want_write_file(filp); |
622 | if (error) | |
623 | return error; | |
865e9446 | 624 | |
781355c6 | 625 | xfs_ilock(ip, iolock); |
69eb5fa1 | 626 | error = xfs_break_layouts(inode, &iolock, BREAK_UNMAP); |
781355c6 CH |
627 | if (error) |
628 | goto out_unlock; | |
865e9446 CH |
629 | |
630 | switch (bf->l_whence) { | |
631 | case 0: /*SEEK_SET*/ | |
632 | break; | |
633 | case 1: /*SEEK_CUR*/ | |
634 | bf->l_start += filp->f_pos; | |
635 | break; | |
636 | case 2: /*SEEK_END*/ | |
637 | bf->l_start += XFS_ISIZE(ip); | |
638 | break; | |
639 | default: | |
2451337d | 640 | error = -EINVAL; |
865e9446 CH |
641 | goto out_unlock; |
642 | } | |
643 | ||
644 | /* | |
645 | * length of <= 0 for resv/unresv/zero is invalid. length for | |
646 | * alloc/free is ignored completely and we have no idea what userspace | |
647 | * might have set it to, so set it to zero to allow range | |
648 | * checks to pass. | |
649 | */ | |
650 | switch (cmd) { | |
651 | case XFS_IOC_ZERO_RANGE: | |
652 | case XFS_IOC_RESVSP: | |
653 | case XFS_IOC_RESVSP64: | |
654 | case XFS_IOC_UNRESVSP: | |
655 | case XFS_IOC_UNRESVSP64: | |
656 | if (bf->l_len <= 0) { | |
2451337d | 657 | error = -EINVAL; |
865e9446 CH |
658 | goto out_unlock; |
659 | } | |
660 | break; | |
661 | default: | |
662 | bf->l_len = 0; | |
663 | break; | |
664 | } | |
665 | ||
666 | if (bf->l_start < 0 || | |
8add71ca | 667 | bf->l_start > inode->i_sb->s_maxbytes || |
865e9446 | 668 | bf->l_start + bf->l_len < 0 || |
8add71ca | 669 | bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) { |
2451337d | 670 | error = -EINVAL; |
865e9446 CH |
671 | goto out_unlock; |
672 | } | |
673 | ||
674 | switch (cmd) { | |
675 | case XFS_IOC_ZERO_RANGE: | |
8add71ca | 676 | flags |= XFS_PREALLOC_SET; |
865e9446 | 677 | error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); |
865e9446 CH |
678 | break; |
679 | case XFS_IOC_RESVSP: | |
680 | case XFS_IOC_RESVSP64: | |
8add71ca | 681 | flags |= XFS_PREALLOC_SET; |
865e9446 CH |
682 | error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, |
683 | XFS_BMAPI_PREALLOC); | |
865e9446 CH |
684 | break; |
685 | case XFS_IOC_UNRESVSP: | |
686 | case XFS_IOC_UNRESVSP64: | |
687 | error = xfs_free_file_space(ip, bf->l_start, bf->l_len); | |
688 | break; | |
689 | case XFS_IOC_ALLOCSP: | |
690 | case XFS_IOC_ALLOCSP64: | |
691 | case XFS_IOC_FREESP: | |
692 | case XFS_IOC_FREESP64: | |
8add71ca | 693 | flags |= XFS_PREALLOC_CLEAR; |
865e9446 CH |
694 | if (bf->l_start > XFS_ISIZE(ip)) { |
695 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), | |
696 | bf->l_start - XFS_ISIZE(ip), 0); | |
697 | if (error) | |
698 | goto out_unlock; | |
699 | } | |
700 | ||
701 | iattr.ia_valid = ATTR_SIZE; | |
702 | iattr.ia_size = bf->l_start; | |
703 | ||
69bca807 | 704 | error = xfs_vn_setattr_size(file_dentry(filp), &iattr); |
865e9446 CH |
705 | break; |
706 | default: | |
707 | ASSERT(0); | |
2451337d | 708 | error = -EINVAL; |
865e9446 CH |
709 | } |
710 | ||
711 | if (error) | |
712 | goto out_unlock; | |
713 | ||
8add71ca | 714 | error = xfs_update_prealloc_flags(ip, flags); |
865e9446 CH |
715 | |
716 | out_unlock: | |
781355c6 | 717 | xfs_iunlock(ip, iolock); |
d9457dc0 | 718 | mnt_drop_write_file(filp); |
2451337d | 719 | return error; |
1da177e4 LT |
720 | } |
721 | ||
722 | STATIC int | |
723 | xfs_ioc_bulkstat( | |
724 | xfs_mount_t *mp, | |
725 | unsigned int cmd, | |
726 | void __user *arg) | |
727 | { | |
728 | xfs_fsop_bulkreq_t bulkreq; | |
729 | int count; /* # of records returned */ | |
730 | xfs_ino_t inlast; /* last inode number */ | |
731 | int done; | |
732 | int error; | |
733 | ||
734 | /* done = 1 if there are more stats to get and if bulkstat */ | |
735 | /* should be called again (unused here, but used in dmapi) */ | |
736 | ||
737 | if (!capable(CAP_SYS_ADMIN)) | |
738 | return -EPERM; | |
739 | ||
740 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 741 | return -EIO; |
1da177e4 LT |
742 | |
743 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
b474c7ae | 744 | return -EFAULT; |
1da177e4 LT |
745 | |
746 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
b474c7ae | 747 | return -EFAULT; |
1da177e4 LT |
748 | |
749 | if ((count = bulkreq.icount) <= 0) | |
b474c7ae | 750 | return -EINVAL; |
1da177e4 | 751 | |
cd57e594 | 752 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 753 | return -EINVAL; |
cd57e594 | 754 | |
1da177e4 LT |
755 | if (cmd == XFS_IOC_FSINUMBERS) |
756 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 757 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 | 758 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
d716f8ee CH |
759 | error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer, |
760 | sizeof(xfs_bstat_t), NULL, &done); | |
cd57e594 | 761 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
762 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
763 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
764 | &done); | |
1da177e4 LT |
765 | |
766 | if (error) | |
2451337d | 767 | return error; |
1da177e4 LT |
768 | |
769 | if (bulkreq.ocount != NULL) { | |
770 | if (copy_to_user(bulkreq.lastip, &inlast, | |
771 | sizeof(xfs_ino_t))) | |
b474c7ae | 772 | return -EFAULT; |
1da177e4 LT |
773 | |
774 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
b474c7ae | 775 | return -EFAULT; |
1da177e4 LT |
776 | } |
777 | ||
778 | return 0; | |
779 | } | |
780 | ||
781 | STATIC int | |
782 | xfs_ioc_fsgeometry_v1( | |
783 | xfs_mount_t *mp, | |
784 | void __user *arg) | |
785 | { | |
eeb2036b | 786 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
787 | int error; |
788 | ||
ac503a4c | 789 | error = xfs_fs_geometry(&mp->m_sb, &fsgeo, 3); |
1da177e4 | 790 | if (error) |
2451337d | 791 | return error; |
1da177e4 | 792 | |
eeb2036b AE |
793 | /* |
794 | * Caller should have passed an argument of type | |
795 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
796 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
797 | */ | |
798 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
b474c7ae | 799 | return -EFAULT; |
1da177e4 LT |
800 | return 0; |
801 | } | |
802 | ||
803 | STATIC int | |
804 | xfs_ioc_fsgeometry( | |
805 | xfs_mount_t *mp, | |
806 | void __user *arg) | |
807 | { | |
808 | xfs_fsop_geom_t fsgeo; | |
809 | int error; | |
810 | ||
ac503a4c | 811 | error = xfs_fs_geometry(&mp->m_sb, &fsgeo, 4); |
1da177e4 | 812 | if (error) |
2451337d | 813 | return error; |
1da177e4 LT |
814 | |
815 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
b474c7ae | 816 | return -EFAULT; |
1da177e4 LT |
817 | return 0; |
818 | } | |
819 | ||
820 | /* | |
821 | * Linux extended inode flags interface. | |
822 | */ | |
1da177e4 LT |
823 | |
824 | STATIC unsigned int | |
825 | xfs_merge_ioc_xflags( | |
826 | unsigned int flags, | |
827 | unsigned int start) | |
828 | { | |
829 | unsigned int xflags = start; | |
830 | ||
39058a0e | 831 | if (flags & FS_IMMUTABLE_FL) |
e7b89481 | 832 | xflags |= FS_XFLAG_IMMUTABLE; |
1da177e4 | 833 | else |
e7b89481 | 834 | xflags &= ~FS_XFLAG_IMMUTABLE; |
39058a0e | 835 | if (flags & FS_APPEND_FL) |
e7b89481 | 836 | xflags |= FS_XFLAG_APPEND; |
1da177e4 | 837 | else |
e7b89481 | 838 | xflags &= ~FS_XFLAG_APPEND; |
39058a0e | 839 | if (flags & FS_SYNC_FL) |
e7b89481 | 840 | xflags |= FS_XFLAG_SYNC; |
1da177e4 | 841 | else |
e7b89481 | 842 | xflags &= ~FS_XFLAG_SYNC; |
39058a0e | 843 | if (flags & FS_NOATIME_FL) |
e7b89481 | 844 | xflags |= FS_XFLAG_NOATIME; |
1da177e4 | 845 | else |
e7b89481 | 846 | xflags &= ~FS_XFLAG_NOATIME; |
39058a0e | 847 | if (flags & FS_NODUMP_FL) |
e7b89481 | 848 | xflags |= FS_XFLAG_NODUMP; |
1da177e4 | 849 | else |
e7b89481 | 850 | xflags &= ~FS_XFLAG_NODUMP; |
1da177e4 LT |
851 | |
852 | return xflags; | |
853 | } | |
854 | ||
855 | STATIC unsigned int | |
856 | xfs_di2lxflags( | |
c8ce540d | 857 | uint16_t di_flags) |
1da177e4 LT |
858 | { |
859 | unsigned int flags = 0; | |
860 | ||
861 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 862 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 863 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 864 | flags |= FS_APPEND_FL; |
1da177e4 | 865 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 866 | flags |= FS_SYNC_FL; |
1da177e4 | 867 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 868 | flags |= FS_NOATIME_FL; |
1da177e4 | 869 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 870 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
871 | return flags; |
872 | } | |
873 | ||
c83bfab1 CH |
874 | STATIC int |
875 | xfs_ioc_fsgetxattr( | |
876 | xfs_inode_t *ip, | |
877 | int attr, | |
878 | void __user *arg) | |
879 | { | |
880 | struct fsxattr fa; | |
881 | ||
a122eb2f DR |
882 | memset(&fa, 0, sizeof(struct fsxattr)); |
883 | ||
c83bfab1 CH |
884 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
885 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
886 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
f7ca3522 DW |
887 | fa.fsx_cowextsize = ip->i_d.di_cowextsize << |
888 | ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 889 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
890 | |
891 | if (attr) { | |
892 | if (ip->i_afp) { | |
893 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
5d829300 | 894 | fa.fsx_nextents = xfs_iext_count(ip->i_afp); |
c83bfab1 CH |
895 | else |
896 | fa.fsx_nextents = ip->i_d.di_anextents; | |
897 | } else | |
898 | fa.fsx_nextents = 0; | |
899 | } else { | |
900 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
5d829300 | 901 | fa.fsx_nextents = xfs_iext_count(&ip->i_df); |
c83bfab1 CH |
902 | else |
903 | fa.fsx_nextents = ip->i_d.di_nextents; | |
904 | } | |
905 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
906 | ||
907 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
908 | return -EFAULT; | |
909 | return 0; | |
910 | } | |
911 | ||
dd60687e CH |
912 | STATIC uint16_t |
913 | xfs_flags2diflags( | |
25fe55e8 CH |
914 | struct xfs_inode *ip, |
915 | unsigned int xflags) | |
916 | { | |
25fe55e8 | 917 | /* can't set PREALLOC this way, just preserve it */ |
dd60687e CH |
918 | uint16_t di_flags = |
919 | (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
920 | ||
e7b89481 | 921 | if (xflags & FS_XFLAG_IMMUTABLE) |
25fe55e8 | 922 | di_flags |= XFS_DIFLAG_IMMUTABLE; |
e7b89481 | 923 | if (xflags & FS_XFLAG_APPEND) |
25fe55e8 | 924 | di_flags |= XFS_DIFLAG_APPEND; |
e7b89481 | 925 | if (xflags & FS_XFLAG_SYNC) |
25fe55e8 | 926 | di_flags |= XFS_DIFLAG_SYNC; |
e7b89481 | 927 | if (xflags & FS_XFLAG_NOATIME) |
25fe55e8 | 928 | di_flags |= XFS_DIFLAG_NOATIME; |
e7b89481 | 929 | if (xflags & FS_XFLAG_NODUMP) |
25fe55e8 | 930 | di_flags |= XFS_DIFLAG_NODUMP; |
e7b89481 | 931 | if (xflags & FS_XFLAG_NODEFRAG) |
25fe55e8 | 932 | di_flags |= XFS_DIFLAG_NODEFRAG; |
e7b89481 | 933 | if (xflags & FS_XFLAG_FILESTREAM) |
25fe55e8 | 934 | di_flags |= XFS_DIFLAG_FILESTREAM; |
c19b3b05 | 935 | if (S_ISDIR(VFS_I(ip)->i_mode)) { |
e7b89481 | 936 | if (xflags & FS_XFLAG_RTINHERIT) |
25fe55e8 | 937 | di_flags |= XFS_DIFLAG_RTINHERIT; |
e7b89481 | 938 | if (xflags & FS_XFLAG_NOSYMLINKS) |
25fe55e8 | 939 | di_flags |= XFS_DIFLAG_NOSYMLINKS; |
e7b89481 | 940 | if (xflags & FS_XFLAG_EXTSZINHERIT) |
25fe55e8 | 941 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; |
e7b89481 | 942 | if (xflags & FS_XFLAG_PROJINHERIT) |
9336e3a7 | 943 | di_flags |= XFS_DIFLAG_PROJINHERIT; |
c19b3b05 | 944 | } else if (S_ISREG(VFS_I(ip)->i_mode)) { |
e7b89481 | 945 | if (xflags & FS_XFLAG_REALTIME) |
25fe55e8 | 946 | di_flags |= XFS_DIFLAG_REALTIME; |
e7b89481 | 947 | if (xflags & FS_XFLAG_EXTSIZE) |
25fe55e8 CH |
948 | di_flags |= XFS_DIFLAG_EXTSIZE; |
949 | } | |
58f88ca2 | 950 | |
dd60687e CH |
951 | return di_flags; |
952 | } | |
953 | ||
954 | STATIC uint64_t | |
955 | xfs_flags2diflags2( | |
956 | struct xfs_inode *ip, | |
957 | unsigned int xflags) | |
958 | { | |
959 | uint64_t di_flags2 = | |
960 | (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK); | |
58f88ca2 | 961 | |
58f88ca2 DC |
962 | if (xflags & FS_XFLAG_DAX) |
963 | di_flags2 |= XFS_DIFLAG2_DAX; | |
f7ca3522 DW |
964 | if (xflags & FS_XFLAG_COWEXTSIZE) |
965 | di_flags2 |= XFS_DIFLAG2_COWEXTSIZE; | |
58f88ca2 | 966 | |
dd60687e | 967 | return di_flags2; |
25fe55e8 CH |
968 | } |
969 | ||
f13fae2d CH |
970 | STATIC void |
971 | xfs_diflags_to_linux( | |
972 | struct xfs_inode *ip) | |
973 | { | |
e4f75291 | 974 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
975 | unsigned int xflags = xfs_ip2xflags(ip); |
976 | ||
e7b89481 | 977 | if (xflags & FS_XFLAG_IMMUTABLE) |
f13fae2d CH |
978 | inode->i_flags |= S_IMMUTABLE; |
979 | else | |
980 | inode->i_flags &= ~S_IMMUTABLE; | |
e7b89481 | 981 | if (xflags & FS_XFLAG_APPEND) |
f13fae2d CH |
982 | inode->i_flags |= S_APPEND; |
983 | else | |
984 | inode->i_flags &= ~S_APPEND; | |
e7b89481 | 985 | if (xflags & FS_XFLAG_SYNC) |
f13fae2d CH |
986 | inode->i_flags |= S_SYNC; |
987 | else | |
988 | inode->i_flags &= ~S_SYNC; | |
e7b89481 | 989 | if (xflags & FS_XFLAG_NOATIME) |
f13fae2d CH |
990 | inode->i_flags |= S_NOATIME; |
991 | else | |
992 | inode->i_flags &= ~S_NOATIME; | |
742d8429 | 993 | #if 0 /* disabled until the flag switching races are sorted out */ |
58f88ca2 DC |
994 | if (xflags & FS_XFLAG_DAX) |
995 | inode->i_flags |= S_DAX; | |
996 | else | |
997 | inode->i_flags &= ~S_DAX; | |
742d8429 | 998 | #endif |
f13fae2d | 999 | } |
25fe55e8 | 1000 | |
29a17c00 DC |
1001 | static int |
1002 | xfs_ioctl_setattr_xflags( | |
1003 | struct xfs_trans *tp, | |
1004 | struct xfs_inode *ip, | |
1005 | struct fsxattr *fa) | |
1006 | { | |
1007 | struct xfs_mount *mp = ip->i_mount; | |
dd60687e | 1008 | uint64_t di_flags2; |
29a17c00 DC |
1009 | |
1010 | /* Can't change realtime flag if any extents are allocated. */ | |
1011 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
e7b89481 | 1012 | XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME)) |
29a17c00 DC |
1013 | return -EINVAL; |
1014 | ||
1015 | /* If realtime flag is set then must have realtime device */ | |
e7b89481 | 1016 | if (fa->fsx_xflags & FS_XFLAG_REALTIME) { |
29a17c00 DC |
1017 | if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || |
1018 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) | |
1019 | return -EINVAL; | |
1020 | } | |
1021 | ||
1987fd74 | 1022 | /* Clear reflink if we are actually able to set the rt flag. */ |
c8e156ac | 1023 | if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip)) |
1987fd74 | 1024 | ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK; |
c8e156ac | 1025 | |
4f435ebe DW |
1026 | /* Don't allow us to set DAX mode for a reflinked file for now. */ |
1027 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip)) | |
1028 | return -EINVAL; | |
1029 | ||
29a17c00 DC |
1030 | /* |
1031 | * Can't modify an immutable/append-only file unless | |
1032 | * we have appropriate permission. | |
1033 | */ | |
1034 | if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) || | |
e7b89481 | 1035 | (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) && |
29a17c00 DC |
1036 | !capable(CAP_LINUX_IMMUTABLE)) |
1037 | return -EPERM; | |
1038 | ||
dd60687e CH |
1039 | /* diflags2 only valid for v3 inodes. */ |
1040 | di_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags); | |
1041 | if (di_flags2 && ip->i_d.di_version < 3) | |
1042 | return -EINVAL; | |
1043 | ||
1044 | ip->i_d.di_flags = xfs_flags2diflags(ip, fa->fsx_xflags); | |
1045 | ip->i_d.di_flags2 = di_flags2; | |
1046 | ||
29a17c00 DC |
1047 | xfs_diflags_to_linux(ip); |
1048 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); | |
1049 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
ff6d6af2 | 1050 | XFS_STATS_INC(mp, xs_ig_attrchg); |
29a17c00 DC |
1051 | return 0; |
1052 | } | |
1053 | ||
3a6a854a DC |
1054 | /* |
1055 | * If we are changing DAX flags, we have to ensure the file is clean and any | |
1056 | * cached objects in the address space are invalidated and removed. This | |
1057 | * requires us to lock out other IO and page faults similar to a truncate | |
1058 | * operation. The locks need to be held until the transaction has been committed | |
1059 | * so that the cache invalidation is atomic with respect to the DAX flag | |
1060 | * manipulation. | |
1061 | */ | |
1062 | static int | |
1063 | xfs_ioctl_setattr_dax_invalidate( | |
1064 | struct xfs_inode *ip, | |
1065 | struct fsxattr *fa, | |
1066 | int *join_flags) | |
1067 | { | |
1068 | struct inode *inode = VFS_I(ip); | |
6851a3db | 1069 | struct super_block *sb = inode->i_sb; |
3a6a854a DC |
1070 | int error; |
1071 | ||
1072 | *join_flags = 0; | |
1073 | ||
e8897529 DC |
1074 | /* |
1075 | * It is only valid to set the DAX flag on regular files and | |
64485437 | 1076 | * directories on filesystems where the block size is equal to the page |
aaacdd25 DW |
1077 | * size. On directories it serves as an inherited hint so we don't |
1078 | * have to check the device for dax support or flush pagecache. | |
e8897529 | 1079 | */ |
64485437 DC |
1080 | if (fa->fsx_xflags & FS_XFLAG_DAX) { |
1081 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) | |
1082 | return -EINVAL; | |
aaacdd25 DW |
1083 | if (S_ISREG(inode->i_mode) && |
1084 | !bdev_dax_supported(xfs_find_bdev_for_inode(VFS_I(ip)), | |
80660f20 | 1085 | sb->s_blocksize)) |
64485437 DC |
1086 | return -EINVAL; |
1087 | } | |
e8897529 | 1088 | |
3a6a854a DC |
1089 | /* If the DAX state is not changing, we have nothing to do here. */ |
1090 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode)) | |
1091 | return 0; | |
1092 | if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode)) | |
1093 | return 0; | |
1094 | ||
aaacdd25 DW |
1095 | if (S_ISDIR(inode->i_mode)) |
1096 | return 0; | |
1097 | ||
3a6a854a DC |
1098 | /* lock, flush and invalidate mapping in preparation for flag change */ |
1099 | xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL); | |
1100 | error = filemap_write_and_wait(inode->i_mapping); | |
1101 | if (error) | |
1102 | goto out_unlock; | |
1103 | error = invalidate_inode_pages2(inode->i_mapping); | |
1104 | if (error) | |
1105 | goto out_unlock; | |
1106 | ||
1107 | *join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL; | |
29a17c00 | 1108 | return 0; |
3a6a854a DC |
1109 | |
1110 | out_unlock: | |
1111 | xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL); | |
1112 | return error; | |
1113 | ||
29a17c00 DC |
1114 | } |
1115 | ||
8f3d17ab DC |
1116 | /* |
1117 | * Set up the transaction structure for the setattr operation, checking that we | |
1118 | * have permission to do so. On success, return a clean transaction and the | |
1119 | * inode locked exclusively ready for further operation specific checks. On | |
1120 | * failure, return an error without modifying or locking the inode. | |
3a6a854a DC |
1121 | * |
1122 | * The inode might already be IO locked on call. If this is the case, it is | |
1123 | * indicated in @join_flags and we take full responsibility for ensuring they | |
1124 | * are unlocked from now on. Hence if we have an error here, we still have to | |
1125 | * unlock them. Otherwise, once they are joined to the transaction, they will | |
1126 | * be unlocked on commit/cancel. | |
8f3d17ab DC |
1127 | */ |
1128 | static struct xfs_trans * | |
1129 | xfs_ioctl_setattr_get_trans( | |
3a6a854a DC |
1130 | struct xfs_inode *ip, |
1131 | int join_flags) | |
8f3d17ab DC |
1132 | { |
1133 | struct xfs_mount *mp = ip->i_mount; | |
1134 | struct xfs_trans *tp; | |
3a6a854a | 1135 | int error = -EROFS; |
8f3d17ab DC |
1136 | |
1137 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
3a6a854a DC |
1138 | goto out_unlock; |
1139 | error = -EIO; | |
8f3d17ab | 1140 | if (XFS_FORCED_SHUTDOWN(mp)) |
3a6a854a | 1141 | goto out_unlock; |
8f3d17ab | 1142 | |
253f4911 | 1143 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp); |
8f3d17ab | 1144 | if (error) |
253f4911 | 1145 | return ERR_PTR(error); |
8f3d17ab DC |
1146 | |
1147 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
3a6a854a DC |
1148 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags); |
1149 | join_flags = 0; | |
8f3d17ab DC |
1150 | |
1151 | /* | |
1152 | * CAP_FOWNER overrides the following restrictions: | |
1153 | * | |
1154 | * The user ID of the calling process must be equal to the file owner | |
1155 | * ID, except in cases where the CAP_FSETID capability is applicable. | |
1156 | */ | |
1157 | if (!inode_owner_or_capable(VFS_I(ip))) { | |
1158 | error = -EPERM; | |
1159 | goto out_cancel; | |
1160 | } | |
1161 | ||
1162 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1163 | xfs_trans_set_sync(tp); | |
1164 | ||
1165 | return tp; | |
1166 | ||
1167 | out_cancel: | |
4906e215 | 1168 | xfs_trans_cancel(tp); |
3a6a854a DC |
1169 | out_unlock: |
1170 | if (join_flags) | |
1171 | xfs_iunlock(ip, join_flags); | |
8f3d17ab DC |
1172 | return ERR_PTR(error); |
1173 | } | |
1174 | ||
9b94fcc3 IP |
1175 | /* |
1176 | * extent size hint validation is somewhat cumbersome. Rules are: | |
1177 | * | |
1178 | * 1. extent size hint is only valid for directories and regular files | |
e7b89481 DC |
1179 | * 2. FS_XFLAG_EXTSIZE is only valid for regular files |
1180 | * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories. | |
9b94fcc3 IP |
1181 | * 4. can only be changed on regular files if no extents are allocated |
1182 | * 5. can be changed on directories at any time | |
1183 | * 6. extsize hint of 0 turns off hints, clears inode flags. | |
1184 | * 7. Extent size must be a multiple of the appropriate block size. | |
1185 | * 8. for non-realtime files, the extent size hint must be limited | |
1186 | * to half the AG size to avoid alignment extending the extent beyond the | |
1187 | * limits of the AG. | |
80e4e126 DW |
1188 | * |
1189 | * Please keep this function in sync with xfs_scrub_inode_extsize. | |
9b94fcc3 | 1190 | */ |
f92090e9 | 1191 | static int |
d4388d3c DC |
1192 | xfs_ioctl_setattr_check_extsize( |
1193 | struct xfs_inode *ip, | |
1194 | struct fsxattr *fa) | |
1195 | { | |
1196 | struct xfs_mount *mp = ip->i_mount; | |
1197 | ||
c19b3b05 | 1198 | if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode)) |
9b94fcc3 IP |
1199 | return -EINVAL; |
1200 | ||
e7b89481 | 1201 | if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) && |
c19b3b05 | 1202 | !S_ISDIR(VFS_I(ip)->i_mode)) |
9b94fcc3 IP |
1203 | return -EINVAL; |
1204 | ||
c19b3b05 | 1205 | if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents && |
d4388d3c DC |
1206 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize)) |
1207 | return -EINVAL; | |
1208 | ||
d4388d3c DC |
1209 | if (fa->fsx_extsize != 0) { |
1210 | xfs_extlen_t size; | |
1211 | xfs_fsblock_t extsize_fsb; | |
1212 | ||
1213 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1214 | if (extsize_fsb > MAXEXTLEN) | |
1215 | return -EINVAL; | |
1216 | ||
1217 | if (XFS_IS_REALTIME_INODE(ip) || | |
e7b89481 | 1218 | (fa->fsx_xflags & FS_XFLAG_REALTIME)) { |
d4388d3c DC |
1219 | size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog; |
1220 | } else { | |
1221 | size = mp->m_sb.sb_blocksize; | |
1222 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1223 | return -EINVAL; | |
1224 | } | |
1225 | ||
1226 | if (fa->fsx_extsize % size) | |
1227 | return -EINVAL; | |
9b94fcc3 | 1228 | } else |
e7b89481 | 1229 | fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT); |
9b94fcc3 | 1230 | |
d4388d3c DC |
1231 | return 0; |
1232 | } | |
1233 | ||
f7ca3522 DW |
1234 | /* |
1235 | * CoW extent size hint validation rules are: | |
1236 | * | |
1237 | * 1. CoW extent size hint can only be set if reflink is enabled on the fs. | |
1238 | * The inode does not have to have any shared blocks, but it must be a v3. | |
1239 | * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files; | |
1240 | * for a directory, the hint is propagated to new files. | |
1241 | * 3. Can be changed on files & directories at any time. | |
1242 | * 4. CoW extsize hint of 0 turns off hints, clears inode flags. | |
1243 | * 5. Extent size must be a multiple of the appropriate block size. | |
1244 | * 6. The extent size hint must be limited to half the AG size to avoid | |
1245 | * alignment extending the extent beyond the limits of the AG. | |
80e4e126 DW |
1246 | * |
1247 | * Please keep this function in sync with xfs_scrub_inode_cowextsize. | |
f7ca3522 DW |
1248 | */ |
1249 | static int | |
1250 | xfs_ioctl_setattr_check_cowextsize( | |
1251 | struct xfs_inode *ip, | |
1252 | struct fsxattr *fa) | |
1253 | { | |
1254 | struct xfs_mount *mp = ip->i_mount; | |
1255 | ||
1256 | if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE)) | |
1257 | return 0; | |
1258 | ||
1259 | if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb) || | |
1260 | ip->i_d.di_version != 3) | |
1261 | return -EINVAL; | |
1262 | ||
1263 | if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode)) | |
1264 | return -EINVAL; | |
1265 | ||
1266 | if (fa->fsx_cowextsize != 0) { | |
1267 | xfs_extlen_t size; | |
1268 | xfs_fsblock_t cowextsize_fsb; | |
1269 | ||
1270 | cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize); | |
1271 | if (cowextsize_fsb > MAXEXTLEN) | |
1272 | return -EINVAL; | |
1273 | ||
1274 | size = mp->m_sb.sb_blocksize; | |
1275 | if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1276 | return -EINVAL; | |
1277 | ||
1278 | if (fa->fsx_cowextsize % size) | |
1279 | return -EINVAL; | |
1280 | } else | |
1281 | fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE; | |
1282 | ||
1283 | return 0; | |
1284 | } | |
1285 | ||
f92090e9 | 1286 | static int |
23bd0735 DC |
1287 | xfs_ioctl_setattr_check_projid( |
1288 | struct xfs_inode *ip, | |
1289 | struct fsxattr *fa) | |
1290 | { | |
1291 | /* Disallow 32bit project ids if projid32bit feature is not enabled. */ | |
c8ce540d | 1292 | if (fa->fsx_projid > (uint16_t)-1 && |
23bd0735 DC |
1293 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) |
1294 | return -EINVAL; | |
1295 | ||
1296 | /* | |
1297 | * Project Quota ID state is only allowed to change from within the init | |
1298 | * namespace. Enforce that restriction only if we are trying to change | |
1299 | * the quota ID state. Everything else is allowed in user namespaces. | |
1300 | */ | |
1301 | if (current_user_ns() == &init_user_ns) | |
1302 | return 0; | |
1303 | ||
1304 | if (xfs_get_projid(ip) != fa->fsx_projid) | |
1305 | return -EINVAL; | |
e7b89481 | 1306 | if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) != |
23bd0735 DC |
1307 | (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)) |
1308 | return -EINVAL; | |
1309 | ||
1310 | return 0; | |
1311 | } | |
25fe55e8 CH |
1312 | |
1313 | STATIC int | |
1314 | xfs_ioctl_setattr( | |
1315 | xfs_inode_t *ip, | |
fd179b9c | 1316 | struct fsxattr *fa) |
25fe55e8 CH |
1317 | { |
1318 | struct xfs_mount *mp = ip->i_mount; | |
1319 | struct xfs_trans *tp; | |
7d095257 | 1320 | struct xfs_dquot *udqp = NULL; |
92f8ff73 | 1321 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
1322 | struct xfs_dquot *olddquot = NULL; |
1323 | int code; | |
3a6a854a | 1324 | int join_flags = 0; |
25fe55e8 | 1325 | |
cca28fb8 | 1326 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 | 1327 | |
23bd0735 DC |
1328 | code = xfs_ioctl_setattr_check_projid(ip, fa); |
1329 | if (code) | |
1330 | return code; | |
23963e54 | 1331 | |
25fe55e8 CH |
1332 | /* |
1333 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
1334 | * before we start any other transactions. Trying to do this later | |
1335 | * is messy. We don't care to take a readlock to look at the ids | |
1336 | * in inode here, because we can't hold it across the trans_reserve. | |
1337 | * If the IDs do change before we take the ilock, we're covered | |
1338 | * because the i_*dquot fields will get updated anyway. | |
1339 | */ | |
fd179b9c | 1340 | if (XFS_IS_QUOTA_ON(mp)) { |
7d095257 | 1341 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 | 1342 | ip->i_d.di_gid, fa->fsx_projid, |
92f8ff73 | 1343 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
25fe55e8 CH |
1344 | if (code) |
1345 | return code; | |
1346 | } | |
1347 | ||
3a6a854a DC |
1348 | /* |
1349 | * Changing DAX config may require inode locking for mapping | |
1350 | * invalidation. These need to be held all the way to transaction commit | |
1351 | * or cancel time, so need to be passed through to | |
1352 | * xfs_ioctl_setattr_get_trans() so it can apply them to the join call | |
1353 | * appropriately. | |
1354 | */ | |
1355 | code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags); | |
1356 | if (code) | |
1357 | goto error_free_dquots; | |
1358 | ||
1359 | tp = xfs_ioctl_setattr_get_trans(ip, join_flags); | |
8f3d17ab DC |
1360 | if (IS_ERR(tp)) { |
1361 | code = PTR_ERR(tp); | |
1362 | goto error_free_dquots; | |
25fe55e8 CH |
1363 | } |
1364 | ||
25fe55e8 | 1365 | |
fd179b9c DC |
1366 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && |
1367 | xfs_get_projid(ip) != fa->fsx_projid) { | |
1368 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp, | |
1369 | capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0); | |
1370 | if (code) /* out of quota */ | |
d4388d3c | 1371 | goto error_trans_cancel; |
25fe55e8 CH |
1372 | } |
1373 | ||
d4388d3c DC |
1374 | code = xfs_ioctl_setattr_check_extsize(ip, fa); |
1375 | if (code) | |
1376 | goto error_trans_cancel; | |
25fe55e8 | 1377 | |
f7ca3522 DW |
1378 | code = xfs_ioctl_setattr_check_cowextsize(ip, fa); |
1379 | if (code) | |
1380 | goto error_trans_cancel; | |
1381 | ||
29a17c00 DC |
1382 | code = xfs_ioctl_setattr_xflags(tp, ip, fa); |
1383 | if (code) | |
d4388d3c | 1384 | goto error_trans_cancel; |
25fe55e8 CH |
1385 | |
1386 | /* | |
fd179b9c DC |
1387 | * Change file ownership. Must be the owner or privileged. CAP_FSETID |
1388 | * overrides the following restrictions: | |
1389 | * | |
1390 | * The set-user-ID and set-group-ID bits of a file will be cleared upon | |
1391 | * successful return from chown() | |
25fe55e8 | 1392 | */ |
25fe55e8 | 1393 | |
c19b3b05 | 1394 | if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) && |
fd179b9c | 1395 | !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) |
c19b3b05 | 1396 | VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID); |
25fe55e8 | 1397 | |
fd179b9c DC |
1398 | /* Change the ownerships and register project quota modifications */ |
1399 | if (xfs_get_projid(ip) != fa->fsx_projid) { | |
1400 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { | |
1401 | olddquot = xfs_qm_vop_chown(tp, ip, | |
1402 | &ip->i_pdquot, pdqp); | |
1403 | } | |
1404 | ASSERT(ip->i_d.di_version > 1); | |
1405 | xfs_set_projid(ip, fa->fsx_projid); | |
f13fae2d | 1406 | } |
25fe55e8 | 1407 | |
a872703f DC |
1408 | /* |
1409 | * Only set the extent size hint if we've already determined that the | |
1410 | * extent size hint should be set on the inode. If no extent size flags | |
1411 | * are set on the inode then unconditionally clear the extent size hint. | |
1412 | */ | |
fd179b9c DC |
1413 | if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) |
1414 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
1415 | else | |
1416 | ip->i_d.di_extsize = 0; | |
f7ca3522 DW |
1417 | if (ip->i_d.di_version == 3 && |
1418 | (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE)) | |
1419 | ip->i_d.di_cowextsize = fa->fsx_cowextsize >> | |
1420 | mp->m_sb.sb_blocklog; | |
1421 | else | |
1422 | ip->i_d.di_cowextsize = 0; | |
25fe55e8 | 1423 | |
70393313 | 1424 | code = xfs_trans_commit(tp); |
25fe55e8 CH |
1425 | |
1426 | /* | |
1427 | * Release any dquot(s) the inode had kept before chown. | |
1428 | */ | |
7d095257 CH |
1429 | xfs_qm_dqrele(olddquot); |
1430 | xfs_qm_dqrele(udqp); | |
92f8ff73 | 1431 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1432 | |
288699fe | 1433 | return code; |
25fe55e8 | 1434 | |
d4388d3c | 1435 | error_trans_cancel: |
4906e215 | 1436 | xfs_trans_cancel(tp); |
8f3d17ab | 1437 | error_free_dquots: |
7d095257 | 1438 | xfs_qm_dqrele(udqp); |
92f8ff73 | 1439 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1440 | return code; |
1441 | } | |
1442 | ||
1da177e4 | 1443 | STATIC int |
df26cfe8 | 1444 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1445 | xfs_inode_t *ip, |
1446 | struct file *filp, | |
1da177e4 LT |
1447 | void __user *arg) |
1448 | { | |
1449 | struct fsxattr fa; | |
d9457dc0 | 1450 | int error; |
df26cfe8 LM |
1451 | |
1452 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1453 | return -EFAULT; | |
1da177e4 | 1454 | |
d9457dc0 JK |
1455 | error = mnt_want_write_file(filp); |
1456 | if (error) | |
1457 | return error; | |
fd179b9c | 1458 | error = xfs_ioctl_setattr(ip, &fa); |
d9457dc0 | 1459 | mnt_drop_write_file(filp); |
2451337d | 1460 | return error; |
df26cfe8 | 1461 | } |
1da177e4 | 1462 | |
df26cfe8 LM |
1463 | STATIC int |
1464 | xfs_ioc_getxflags( | |
1465 | xfs_inode_t *ip, | |
1466 | void __user *arg) | |
1467 | { | |
1468 | unsigned int flags; | |
1da177e4 | 1469 | |
df26cfe8 LM |
1470 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1471 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1472 | return -EFAULT; | |
1473 | return 0; | |
1474 | } | |
1da177e4 | 1475 | |
df26cfe8 LM |
1476 | STATIC int |
1477 | xfs_ioc_setxflags( | |
f96291f6 | 1478 | struct xfs_inode *ip, |
df26cfe8 LM |
1479 | struct file *filp, |
1480 | void __user *arg) | |
1481 | { | |
f96291f6 | 1482 | struct xfs_trans *tp; |
25fe55e8 | 1483 | struct fsxattr fa; |
df26cfe8 | 1484 | unsigned int flags; |
3a6a854a | 1485 | int join_flags = 0; |
f96291f6 | 1486 | int error; |
1da177e4 | 1487 | |
df26cfe8 LM |
1488 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1489 | return -EFAULT; | |
1da177e4 | 1490 | |
df26cfe8 LM |
1491 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1492 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1493 | FS_SYNC_FL)) | |
1494 | return -EOPNOTSUPP; | |
1da177e4 | 1495 | |
25fe55e8 | 1496 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); |
1da177e4 | 1497 | |
d9457dc0 JK |
1498 | error = mnt_want_write_file(filp); |
1499 | if (error) | |
1500 | return error; | |
f96291f6 | 1501 | |
3a6a854a DC |
1502 | /* |
1503 | * Changing DAX config may require inode locking for mapping | |
1504 | * invalidation. These need to be held all the way to transaction commit | |
1505 | * or cancel time, so need to be passed through to | |
1506 | * xfs_ioctl_setattr_get_trans() so it can apply them to the join call | |
1507 | * appropriately. | |
1508 | */ | |
1509 | error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags); | |
1510 | if (error) | |
1511 | goto out_drop_write; | |
1512 | ||
1513 | tp = xfs_ioctl_setattr_get_trans(ip, join_flags); | |
f96291f6 DC |
1514 | if (IS_ERR(tp)) { |
1515 | error = PTR_ERR(tp); | |
1516 | goto out_drop_write; | |
1517 | } | |
1518 | ||
1519 | error = xfs_ioctl_setattr_xflags(tp, ip, &fa); | |
1520 | if (error) { | |
4906e215 | 1521 | xfs_trans_cancel(tp); |
f96291f6 DC |
1522 | goto out_drop_write; |
1523 | } | |
1524 | ||
70393313 | 1525 | error = xfs_trans_commit(tp); |
f96291f6 | 1526 | out_drop_write: |
d9457dc0 | 1527 | mnt_drop_write_file(filp); |
2451337d | 1528 | return error; |
1da177e4 LT |
1529 | } |
1530 | ||
232b5194 CH |
1531 | static bool |
1532 | xfs_getbmap_format( | |
1533 | struct kgetbmap *p, | |
1534 | struct getbmapx __user *u, | |
1535 | size_t recsize) | |
8a7141a8 | 1536 | { |
232b5194 CH |
1537 | if (put_user(p->bmv_offset, &u->bmv_offset) || |
1538 | put_user(p->bmv_block, &u->bmv_block) || | |
1539 | put_user(p->bmv_length, &u->bmv_length) || | |
1540 | put_user(0, &u->bmv_count) || | |
1541 | put_user(0, &u->bmv_entries)) | |
1542 | return false; | |
1543 | if (recsize < sizeof(struct getbmapx)) | |
1544 | return true; | |
1545 | if (put_user(0, &u->bmv_iflags) || | |
1546 | put_user(p->bmv_oflags, &u->bmv_oflags) || | |
1547 | put_user(0, &u->bmv_unused1) || | |
1548 | put_user(0, &u->bmv_unused2)) | |
1549 | return false; | |
1550 | return true; | |
8a7141a8 ES |
1551 | } |
1552 | ||
1da177e4 LT |
1553 | STATIC int |
1554 | xfs_ioc_getbmap( | |
8f3e2058 | 1555 | struct file *file, |
1da177e4 LT |
1556 | unsigned int cmd, |
1557 | void __user *arg) | |
1558 | { | |
be6324c0 | 1559 | struct getbmapx bmx = { 0 }; |
232b5194 CH |
1560 | struct kgetbmap *buf; |
1561 | size_t recsize; | |
1562 | int error, i; | |
1da177e4 | 1563 | |
232b5194 CH |
1564 | switch (cmd) { |
1565 | case XFS_IOC_GETBMAPA: | |
1566 | bmx.bmv_iflags = BMV_IF_ATTRFORK; | |
1567 | /*FALLTHRU*/ | |
1568 | case XFS_IOC_GETBMAP: | |
1569 | if (file->f_mode & FMODE_NOCMTIME) | |
1570 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; | |
1571 | /* struct getbmap is a strict subset of struct getbmapx. */ | |
1572 | recsize = sizeof(struct getbmap); | |
1573 | break; | |
1574 | case XFS_IOC_GETBMAPX: | |
1575 | recsize = sizeof(struct getbmapx); | |
1576 | break; | |
1577 | default: | |
b474c7ae | 1578 | return -EINVAL; |
232b5194 | 1579 | } |
1da177e4 | 1580 | |
232b5194 | 1581 | if (copy_from_user(&bmx, arg, recsize)) |
b474c7ae | 1582 | return -EFAULT; |
1da177e4 LT |
1583 | |
1584 | if (bmx.bmv_count < 2) | |
b474c7ae | 1585 | return -EINVAL; |
232b5194 CH |
1586 | if (bmx.bmv_count > ULONG_MAX / recsize) |
1587 | return -ENOMEM; | |
1da177e4 | 1588 | |
232b5194 CH |
1589 | buf = kmem_zalloc_large(bmx.bmv_count * sizeof(*buf), 0); |
1590 | if (!buf) | |
1591 | return -ENOMEM; | |
1da177e4 | 1592 | |
232b5194 | 1593 | error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, buf); |
1da177e4 | 1594 | if (error) |
232b5194 | 1595 | goto out_free_buf; |
1da177e4 | 1596 | |
232b5194 CH |
1597 | error = -EFAULT; |
1598 | if (copy_to_user(arg, &bmx, recsize)) | |
1599 | goto out_free_buf; | |
1600 | arg += recsize; | |
1601 | ||
1602 | for (i = 0; i < bmx.bmv_entries; i++) { | |
1603 | if (!xfs_getbmap_format(buf + i, arg, recsize)) | |
1604 | goto out_free_buf; | |
1605 | arg += recsize; | |
1606 | } | |
1da177e4 | 1607 | |
232b5194 CH |
1608 | error = 0; |
1609 | out_free_buf: | |
1610 | kmem_free(buf); | |
132bf672 | 1611 | return error; |
1da177e4 | 1612 | } |
df26cfe8 | 1613 | |
e89c0413 DW |
1614 | struct getfsmap_info { |
1615 | struct xfs_mount *mp; | |
9d17e14c CH |
1616 | struct fsmap_head __user *data; |
1617 | unsigned int idx; | |
e89c0413 DW |
1618 | __u32 last_flags; |
1619 | }; | |
1620 | ||
1621 | STATIC int | |
1622 | xfs_getfsmap_format(struct xfs_fsmap *xfm, void *priv) | |
1623 | { | |
1624 | struct getfsmap_info *info = priv; | |
1625 | struct fsmap fm; | |
1626 | ||
1627 | trace_xfs_getfsmap_mapping(info->mp, xfm); | |
1628 | ||
1629 | info->last_flags = xfm->fmr_flags; | |
1630 | xfs_fsmap_from_internal(&fm, xfm); | |
9d17e14c CH |
1631 | if (copy_to_user(&info->data->fmh_recs[info->idx++], &fm, |
1632 | sizeof(struct fsmap))) | |
e89c0413 DW |
1633 | return -EFAULT; |
1634 | ||
e89c0413 DW |
1635 | return 0; |
1636 | } | |
1637 | ||
1638 | STATIC int | |
1639 | xfs_ioc_getfsmap( | |
1640 | struct xfs_inode *ip, | |
9d17e14c | 1641 | struct fsmap_head __user *arg) |
e89c0413 | 1642 | { |
ef2b67ec | 1643 | struct getfsmap_info info = { NULL }; |
e89c0413 DW |
1644 | struct xfs_fsmap_head xhead = {0}; |
1645 | struct fsmap_head head; | |
1646 | bool aborted = false; | |
1647 | int error; | |
1648 | ||
1649 | if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) | |
1650 | return -EFAULT; | |
1651 | if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || | |
1652 | memchr_inv(head.fmh_keys[0].fmr_reserved, 0, | |
1653 | sizeof(head.fmh_keys[0].fmr_reserved)) || | |
1654 | memchr_inv(head.fmh_keys[1].fmr_reserved, 0, | |
1655 | sizeof(head.fmh_keys[1].fmr_reserved))) | |
1656 | return -EINVAL; | |
1657 | ||
1658 | xhead.fmh_iflags = head.fmh_iflags; | |
1659 | xhead.fmh_count = head.fmh_count; | |
1660 | xfs_fsmap_to_internal(&xhead.fmh_keys[0], &head.fmh_keys[0]); | |
1661 | xfs_fsmap_to_internal(&xhead.fmh_keys[1], &head.fmh_keys[1]); | |
1662 | ||
1663 | trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]); | |
1664 | trace_xfs_getfsmap_high_key(ip->i_mount, &xhead.fmh_keys[1]); | |
1665 | ||
1666 | info.mp = ip->i_mount; | |
9d17e14c | 1667 | info.data = arg; |
e89c0413 DW |
1668 | error = xfs_getfsmap(ip->i_mount, &xhead, xfs_getfsmap_format, &info); |
1669 | if (error == XFS_BTREE_QUERY_RANGE_ABORT) { | |
1670 | error = 0; | |
1671 | aborted = true; | |
1672 | } else if (error) | |
1673 | return error; | |
1674 | ||
1675 | /* If we didn't abort, set the "last" flag in the last fmx */ | |
12e4a381 | 1676 | if (!aborted && info.idx) { |
e89c0413 | 1677 | info.last_flags |= FMR_OF_LAST; |
9d17e14c CH |
1678 | if (copy_to_user(&info.data->fmh_recs[info.idx - 1].fmr_flags, |
1679 | &info.last_flags, sizeof(info.last_flags))) | |
e89c0413 DW |
1680 | return -EFAULT; |
1681 | } | |
1682 | ||
1683 | /* copy back header */ | |
1684 | head.fmh_entries = xhead.fmh_entries; | |
1685 | head.fmh_oflags = xhead.fmh_oflags; | |
1686 | if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) | |
1687 | return -EFAULT; | |
1688 | ||
1689 | return 0; | |
1690 | } | |
1691 | ||
36fd6e86 DW |
1692 | STATIC int |
1693 | xfs_ioc_scrub_metadata( | |
1694 | struct xfs_inode *ip, | |
1695 | void __user *arg) | |
1696 | { | |
1697 | struct xfs_scrub_metadata scrub; | |
1698 | int error; | |
1699 | ||
1700 | if (!capable(CAP_SYS_ADMIN)) | |
1701 | return -EPERM; | |
1702 | ||
1703 | if (copy_from_user(&scrub, arg, sizeof(scrub))) | |
1704 | return -EFAULT; | |
1705 | ||
1706 | error = xfs_scrub_metadata(ip, &scrub); | |
1707 | if (error) | |
1708 | return error; | |
1709 | ||
1710 | if (copy_to_user(arg, &scrub, sizeof(scrub))) | |
1711 | return -EFAULT; | |
1712 | ||
1713 | return 0; | |
1714 | } | |
1715 | ||
a133d952 DC |
1716 | int |
1717 | xfs_ioc_swapext( | |
1718 | xfs_swapext_t *sxp) | |
1719 | { | |
1720 | xfs_inode_t *ip, *tip; | |
1721 | struct fd f, tmp; | |
1722 | int error = 0; | |
1723 | ||
1724 | /* Pull information for the target fd */ | |
1725 | f = fdget((int)sxp->sx_fdtarget); | |
1726 | if (!f.file) { | |
2451337d | 1727 | error = -EINVAL; |
a133d952 DC |
1728 | goto out; |
1729 | } | |
1730 | ||
1731 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1732 | !(f.file->f_mode & FMODE_READ) || | |
1733 | (f.file->f_flags & O_APPEND)) { | |
2451337d | 1734 | error = -EBADF; |
a133d952 DC |
1735 | goto out_put_file; |
1736 | } | |
1737 | ||
1738 | tmp = fdget((int)sxp->sx_fdtmp); | |
1739 | if (!tmp.file) { | |
2451337d | 1740 | error = -EINVAL; |
a133d952 DC |
1741 | goto out_put_file; |
1742 | } | |
1743 | ||
1744 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1745 | !(tmp.file->f_mode & FMODE_READ) || | |
1746 | (tmp.file->f_flags & O_APPEND)) { | |
2451337d | 1747 | error = -EBADF; |
a133d952 DC |
1748 | goto out_put_tmp_file; |
1749 | } | |
1750 | ||
1751 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1752 | IS_SWAPFILE(file_inode(tmp.file))) { | |
2451337d | 1753 | error = -EINVAL; |
a133d952 DC |
1754 | goto out_put_tmp_file; |
1755 | } | |
1756 | ||
7f1b6245 JH |
1757 | /* |
1758 | * We need to ensure that the fds passed in point to XFS inodes | |
1759 | * before we cast and access them as XFS structures as we have no | |
1760 | * control over what the user passes us here. | |
1761 | */ | |
1762 | if (f.file->f_op != &xfs_file_operations || | |
1763 | tmp.file->f_op != &xfs_file_operations) { | |
1764 | error = -EINVAL; | |
1765 | goto out_put_tmp_file; | |
1766 | } | |
1767 | ||
a133d952 DC |
1768 | ip = XFS_I(file_inode(f.file)); |
1769 | tip = XFS_I(file_inode(tmp.file)); | |
1770 | ||
1771 | if (ip->i_mount != tip->i_mount) { | |
2451337d | 1772 | error = -EINVAL; |
a133d952 DC |
1773 | goto out_put_tmp_file; |
1774 | } | |
1775 | ||
1776 | if (ip->i_ino == tip->i_ino) { | |
2451337d | 1777 | error = -EINVAL; |
a133d952 DC |
1778 | goto out_put_tmp_file; |
1779 | } | |
1780 | ||
1781 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
2451337d | 1782 | error = -EIO; |
a133d952 DC |
1783 | goto out_put_tmp_file; |
1784 | } | |
1785 | ||
1786 | error = xfs_swap_extents(ip, tip, sxp); | |
1787 | ||
1788 | out_put_tmp_file: | |
1789 | fdput(tmp); | |
1790 | out_put_file: | |
1791 | fdput(f); | |
1792 | out: | |
1793 | return error; | |
1794 | } | |
1795 | ||
f7664b31 ES |
1796 | static int |
1797 | xfs_ioc_getlabel( | |
1798 | struct xfs_mount *mp, | |
1799 | char __user *user_label) | |
1800 | { | |
1801 | struct xfs_sb *sbp = &mp->m_sb; | |
1802 | char label[XFSLABEL_MAX + 1]; | |
1803 | ||
1804 | /* Paranoia */ | |
1805 | BUILD_BUG_ON(sizeof(sbp->sb_fname) > FSLABEL_MAX); | |
1806 | ||
4bb8b65a AB |
1807 | /* 1 larger than sb_fname, so this ensures a trailing NUL char */ |
1808 | memset(label, 0, sizeof(label)); | |
f7664b31 | 1809 | spin_lock(&mp->m_sb_lock); |
4bb8b65a | 1810 | strncpy(label, sbp->sb_fname, XFSLABEL_MAX); |
f7664b31 ES |
1811 | spin_unlock(&mp->m_sb_lock); |
1812 | ||
4bb8b65a | 1813 | if (copy_to_user(user_label, label, sizeof(label))) |
f7664b31 ES |
1814 | return -EFAULT; |
1815 | return 0; | |
1816 | } | |
1817 | ||
1818 | static int | |
1819 | xfs_ioc_setlabel( | |
1820 | struct file *filp, | |
1821 | struct xfs_mount *mp, | |
1822 | char __user *newlabel) | |
1823 | { | |
1824 | struct xfs_sb *sbp = &mp->m_sb; | |
1825 | char label[XFSLABEL_MAX + 1]; | |
1826 | size_t len; | |
1827 | int error; | |
1828 | ||
1829 | if (!capable(CAP_SYS_ADMIN)) | |
1830 | return -EPERM; | |
1831 | /* | |
1832 | * The generic ioctl allows up to FSLABEL_MAX chars, but XFS is much | |
1833 | * smaller, at 12 bytes. We copy one more to be sure we find the | |
1834 | * (required) NULL character to test the incoming label length. | |
1835 | * NB: The on disk label doesn't need to be null terminated. | |
1836 | */ | |
1837 | if (copy_from_user(label, newlabel, XFSLABEL_MAX + 1)) | |
1838 | return -EFAULT; | |
1839 | len = strnlen(label, XFSLABEL_MAX + 1); | |
1840 | if (len > sizeof(sbp->sb_fname)) | |
1841 | return -EINVAL; | |
1842 | ||
1843 | error = mnt_want_write_file(filp); | |
1844 | if (error) | |
1845 | return error; | |
1846 | ||
1847 | spin_lock(&mp->m_sb_lock); | |
1848 | memset(sbp->sb_fname, 0, sizeof(sbp->sb_fname)); | |
4bb8b65a | 1849 | memcpy(sbp->sb_fname, label, len); |
f7664b31 ES |
1850 | spin_unlock(&mp->m_sb_lock); |
1851 | ||
1852 | /* | |
1853 | * Now we do several things to satisfy userspace. | |
1854 | * In addition to normal logging of the primary superblock, we also | |
1855 | * immediately write these changes to sector zero for the primary, then | |
1856 | * update all backup supers (as xfs_db does for a label change), then | |
1857 | * invalidate the block device page cache. This is so that any prior | |
1858 | * buffered reads from userspace (i.e. from blkid) are invalidated, | |
1859 | * and userspace will see the newly-written label. | |
1860 | */ | |
1861 | error = xfs_sync_sb_buf(mp); | |
1862 | if (error) | |
1863 | goto out; | |
1864 | /* | |
1865 | * growfs also updates backup supers so lock against that. | |
1866 | */ | |
1867 | mutex_lock(&mp->m_growlock); | |
1868 | error = xfs_update_secondary_sbs(mp); | |
1869 | mutex_unlock(&mp->m_growlock); | |
1870 | ||
1871 | invalidate_bdev(mp->m_ddev_targp->bt_bdev); | |
1872 | ||
1873 | out: | |
1874 | mnt_drop_write_file(filp); | |
1875 | return error; | |
1876 | } | |
1877 | ||
4d4be482 CH |
1878 | /* |
1879 | * Note: some of the ioctl's return positive numbers as a | |
1880 | * byte count indicating success, such as readlink_by_handle. | |
1881 | * So we don't "sign flip" like most other routines. This means | |
1882 | * true errors need to be returned as a negative value. | |
1883 | */ | |
1884 | long | |
1885 | xfs_file_ioctl( | |
df26cfe8 | 1886 | struct file *filp, |
df26cfe8 | 1887 | unsigned int cmd, |
4d4be482 | 1888 | unsigned long p) |
df26cfe8 | 1889 | { |
496ad9aa | 1890 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1891 | struct xfs_inode *ip = XFS_I(inode); |
1892 | struct xfs_mount *mp = ip->i_mount; | |
1893 | void __user *arg = (void __user *)p; | |
df26cfe8 LM |
1894 | int error; |
1895 | ||
cca28fb8 | 1896 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1897 | |
1898 | switch (cmd) { | |
a46db608 CH |
1899 | case FITRIM: |
1900 | return xfs_ioc_trim(mp, arg); | |
f7664b31 ES |
1901 | case FS_IOC_GETFSLABEL: |
1902 | return xfs_ioc_getlabel(mp, arg); | |
1903 | case FS_IOC_SETFSLABEL: | |
1904 | return xfs_ioc_setlabel(filp, mp, arg); | |
df26cfe8 LM |
1905 | case XFS_IOC_ALLOCSP: |
1906 | case XFS_IOC_FREESP: | |
1907 | case XFS_IOC_RESVSP: | |
1908 | case XFS_IOC_UNRESVSP: | |
1909 | case XFS_IOC_ALLOCSP64: | |
1910 | case XFS_IOC_FREESP64: | |
1911 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1912 | case XFS_IOC_UNRESVSP64: |
1913 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1914 | xfs_flock64_t bf; |
df26cfe8 | 1915 | |
743bb465 | 1916 | if (copy_from_user(&bf, arg, sizeof(bf))) |
b474c7ae | 1917 | return -EFAULT; |
8f3e2058 | 1918 | return xfs_ioc_space(filp, cmd, &bf); |
743bb465 | 1919 | } |
df26cfe8 LM |
1920 | case XFS_IOC_DIOINFO: { |
1921 | struct dioattr da; | |
1922 | xfs_buftarg_t *target = | |
1923 | XFS_IS_REALTIME_INODE(ip) ? | |
1924 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1925 | ||
7c71ee78 | 1926 | da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; |
df26cfe8 LM |
1927 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1928 | ||
1929 | if (copy_to_user(arg, &da, sizeof(da))) | |
b474c7ae | 1930 | return -EFAULT; |
df26cfe8 LM |
1931 | return 0; |
1932 | } | |
1933 | ||
1934 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1935 | case XFS_IOC_FSBULKSTAT: | |
1936 | case XFS_IOC_FSINUMBERS: | |
1937 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1938 | ||
1939 | case XFS_IOC_FSGEOMETRY_V1: | |
1940 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1941 | ||
1942 | case XFS_IOC_FSGEOMETRY: | |
1943 | return xfs_ioc_fsgeometry(mp, arg); | |
1944 | ||
1945 | case XFS_IOC_GETVERSION: | |
1946 | return put_user(inode->i_generation, (int __user *)arg); | |
1947 | ||
1948 | case XFS_IOC_FSGETXATTR: | |
1949 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1950 | case XFS_IOC_FSGETXATTRA: | |
1951 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1952 | case XFS_IOC_FSSETXATTR: |
1953 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1954 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1955 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1956 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1957 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1958 | |
1959 | case XFS_IOC_FSSETDM: { | |
1960 | struct fsdmidata dmi; | |
1961 | ||
1962 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
b474c7ae | 1963 | return -EFAULT; |
df26cfe8 | 1964 | |
d9457dc0 JK |
1965 | error = mnt_want_write_file(filp); |
1966 | if (error) | |
1967 | return error; | |
1968 | ||
df26cfe8 LM |
1969 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1970 | dmi.fsd_dmstate); | |
d9457dc0 | 1971 | mnt_drop_write_file(filp); |
2451337d | 1972 | return error; |
df26cfe8 LM |
1973 | } |
1974 | ||
1975 | case XFS_IOC_GETBMAP: | |
1976 | case XFS_IOC_GETBMAPA: | |
df26cfe8 | 1977 | case XFS_IOC_GETBMAPX: |
232b5194 | 1978 | return xfs_ioc_getbmap(filp, cmd, arg); |
df26cfe8 | 1979 | |
e89c0413 DW |
1980 | case FS_IOC_GETFSMAP: |
1981 | return xfs_ioc_getfsmap(ip, arg); | |
1982 | ||
36fd6e86 DW |
1983 | case XFS_IOC_SCRUB_METADATA: |
1984 | return xfs_ioc_scrub_metadata(ip, arg); | |
1985 | ||
df26cfe8 LM |
1986 | case XFS_IOC_FD_TO_HANDLE: |
1987 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1988 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1989 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1990 | |
743bb465 | 1991 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
b474c7ae | 1992 | return -EFAULT; |
743bb465 | 1993 | return xfs_find_handle(cmd, &hreq); |
1994 | } | |
1995 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1996 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1997 | |
743bb465 | 1998 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1999 | return -EFAULT; |
d296d30a | 2000 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 2001 | } |
df26cfe8 | 2002 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 2003 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 2004 | |
743bb465 | 2005 | case XFS_IOC_READLINK_BY_HANDLE: { |
2006 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 2007 | |
743bb465 | 2008 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 2009 | return -EFAULT; |
d296d30a | 2010 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 2011 | } |
df26cfe8 | 2012 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 2013 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
2014 | |
2015 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 2016 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
2017 | |
2018 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 2019 | struct xfs_swapext sxp; |
2020 | ||
2021 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
b474c7ae | 2022 | return -EFAULT; |
d9457dc0 JK |
2023 | error = mnt_want_write_file(filp); |
2024 | if (error) | |
2025 | return error; | |
a133d952 | 2026 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 2027 | mnt_drop_write_file(filp); |
2451337d | 2028 | return error; |
df26cfe8 LM |
2029 | } |
2030 | ||
2031 | case XFS_IOC_FSCOUNTS: { | |
2032 | xfs_fsop_counts_t out; | |
2033 | ||
2034 | error = xfs_fs_counts(mp, &out); | |
2035 | if (error) | |
2451337d | 2036 | return error; |
df26cfe8 LM |
2037 | |
2038 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 2039 | return -EFAULT; |
df26cfe8 LM |
2040 | return 0; |
2041 | } | |
2042 | ||
2043 | case XFS_IOC_SET_RESBLKS: { | |
2044 | xfs_fsop_resblks_t inout; | |
c8ce540d | 2045 | uint64_t in; |
df26cfe8 LM |
2046 | |
2047 | if (!capable(CAP_SYS_ADMIN)) | |
2048 | return -EPERM; | |
2049 | ||
d5db0f97 | 2050 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
b474c7ae | 2051 | return -EROFS; |
d5db0f97 | 2052 | |
df26cfe8 | 2053 | if (copy_from_user(&inout, arg, sizeof(inout))) |
b474c7ae | 2054 | return -EFAULT; |
df26cfe8 | 2055 | |
d9457dc0 JK |
2056 | error = mnt_want_write_file(filp); |
2057 | if (error) | |
2058 | return error; | |
2059 | ||
df26cfe8 LM |
2060 | /* input parameter is passed in resblks field of structure */ |
2061 | in = inout.resblks; | |
2062 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 2063 | mnt_drop_write_file(filp); |
df26cfe8 | 2064 | if (error) |
2451337d | 2065 | return error; |
df26cfe8 LM |
2066 | |
2067 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
b474c7ae | 2068 | return -EFAULT; |
df26cfe8 LM |
2069 | return 0; |
2070 | } | |
2071 | ||
2072 | case XFS_IOC_GET_RESBLKS: { | |
2073 | xfs_fsop_resblks_t out; | |
2074 | ||
2075 | if (!capable(CAP_SYS_ADMIN)) | |
2076 | return -EPERM; | |
2077 | ||
2078 | error = xfs_reserve_blocks(mp, NULL, &out); | |
2079 | if (error) | |
2451337d | 2080 | return error; |
df26cfe8 LM |
2081 | |
2082 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 2083 | return -EFAULT; |
df26cfe8 LM |
2084 | |
2085 | return 0; | |
2086 | } | |
2087 | ||
2088 | case XFS_IOC_FSGROWFSDATA: { | |
2089 | xfs_growfs_data_t in; | |
2090 | ||
df26cfe8 | 2091 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2092 | return -EFAULT; |
df26cfe8 | 2093 | |
d9457dc0 JK |
2094 | error = mnt_want_write_file(filp); |
2095 | if (error) | |
2096 | return error; | |
df26cfe8 | 2097 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 2098 | mnt_drop_write_file(filp); |
2451337d | 2099 | return error; |
df26cfe8 LM |
2100 | } |
2101 | ||
2102 | case XFS_IOC_FSGROWFSLOG: { | |
2103 | xfs_growfs_log_t in; | |
2104 | ||
df26cfe8 | 2105 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2106 | return -EFAULT; |
df26cfe8 | 2107 | |
d9457dc0 JK |
2108 | error = mnt_want_write_file(filp); |
2109 | if (error) | |
2110 | return error; | |
df26cfe8 | 2111 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 2112 | mnt_drop_write_file(filp); |
2451337d | 2113 | return error; |
df26cfe8 LM |
2114 | } |
2115 | ||
2116 | case XFS_IOC_FSGROWFSRT: { | |
2117 | xfs_growfs_rt_t in; | |
2118 | ||
df26cfe8 | 2119 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2120 | return -EFAULT; |
df26cfe8 | 2121 | |
d9457dc0 JK |
2122 | error = mnt_want_write_file(filp); |
2123 | if (error) | |
2124 | return error; | |
df26cfe8 | 2125 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 2126 | mnt_drop_write_file(filp); |
2451337d | 2127 | return error; |
df26cfe8 LM |
2128 | } |
2129 | ||
df26cfe8 | 2130 | case XFS_IOC_GOINGDOWN: { |
c8ce540d | 2131 | uint32_t in; |
df26cfe8 LM |
2132 | |
2133 | if (!capable(CAP_SYS_ADMIN)) | |
2134 | return -EPERM; | |
2135 | ||
c8ce540d | 2136 | if (get_user(in, (uint32_t __user *)arg)) |
b474c7ae | 2137 | return -EFAULT; |
df26cfe8 | 2138 | |
2451337d | 2139 | return xfs_fs_goingdown(mp, in); |
df26cfe8 LM |
2140 | } |
2141 | ||
2142 | case XFS_IOC_ERROR_INJECTION: { | |
2143 | xfs_error_injection_t in; | |
2144 | ||
2145 | if (!capable(CAP_SYS_ADMIN)) | |
2146 | return -EPERM; | |
2147 | ||
2148 | if (copy_from_user(&in, arg, sizeof(in))) | |
b474c7ae | 2149 | return -EFAULT; |
df26cfe8 | 2150 | |
31965ef3 | 2151 | return xfs_errortag_add(mp, in.errtag); |
df26cfe8 LM |
2152 | } |
2153 | ||
2154 | case XFS_IOC_ERROR_CLEARALL: | |
2155 | if (!capable(CAP_SYS_ADMIN)) | |
2156 | return -EPERM; | |
2157 | ||
31965ef3 | 2158 | return xfs_errortag_clearall(mp); |
df26cfe8 | 2159 | |
8ca149de | 2160 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
2161 | struct xfs_fs_eofblocks eofb; |
2162 | struct xfs_eofblocks keofb; | |
8ca149de | 2163 | |
8c567a7f DE |
2164 | if (!capable(CAP_SYS_ADMIN)) |
2165 | return -EPERM; | |
2166 | ||
2167 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 2168 | return -EROFS; |
8c567a7f | 2169 | |
8ca149de | 2170 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
b474c7ae | 2171 | return -EFAULT; |
8ca149de | 2172 | |
b9fe5052 DE |
2173 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
2174 | if (error) | |
2451337d | 2175 | return error; |
8ca149de | 2176 | |
2451337d | 2177 | return xfs_icache_free_eofblocks(mp, &keofb); |
8ca149de BF |
2178 | } |
2179 | ||
df26cfe8 LM |
2180 | default: |
2181 | return -ENOTTY; | |
2182 | } | |
2183 | } |