1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6 #include "xfs.h"
7 #include "xfs_fs.h"
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_log_format.h"
11 #include "xfs_trans_resv.h"
12 #include "xfs_mount.h"
13 #include "xfs_inode.h"
14 #include "xfs_rtalloc.h"
15 #include "xfs_iwalk.h"
16 #include "xfs_itable.h"
17 #include "xfs_error.h"
18 #include "xfs_da_format.h"
19 #include "xfs_da_btree.h"
20 #include "xfs_attr.h"
21 #include "xfs_bmap.h"
22 #include "xfs_bmap_util.h"
23 #include "xfs_fsops.h"
24 #include "xfs_discard.h"
25 #include "xfs_quota.h"
26 #include "xfs_trace.h"
27 #include "xfs_icache.h"
28 #include "xfs_trans.h"
29 #include "xfs_btree.h"
30 #include <linux/fsmap.h>
31 #include "xfs_fsmap.h"
32 #include "scrub/xfs_scrub.h"
33 #include "xfs_sb.h"
34 #include "xfs_ag.h"
35 #include "xfs_health.h"
36 #include "xfs_reflink.h"
37 #include "xfs_ioctl.h"
38 #include "xfs_xattr.h"
39 #include "xfs_rtbitmap.h"
40 #include "xfs_file.h"
41 #include "xfs_exchrange.h"
42 #include "xfs_handle.h"
43 #include "xfs_rtgroup.h"
44
45 #include <linux/mount.h>
46 #include <linux/fileattr.h>
47
48 /* Return 0 on success or positive error */
49 int
xfs_fsbulkstat_one_fmt(struct xfs_ibulk * breq,const struct xfs_bulkstat * bstat)50 xfs_fsbulkstat_one_fmt(
51 struct xfs_ibulk *breq,
52 const struct xfs_bulkstat *bstat)
53 {
54 struct xfs_bstat bs1;
55
56 xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat);
57 if (copy_to_user(breq->ubuffer, &bs1, sizeof(bs1)))
58 return -EFAULT;
59 return xfs_ibulk_advance(breq, sizeof(struct xfs_bstat));
60 }
61
62 int
xfs_fsinumbers_fmt(struct xfs_ibulk * breq,const struct xfs_inumbers * igrp)63 xfs_fsinumbers_fmt(
64 struct xfs_ibulk *breq,
65 const struct xfs_inumbers *igrp)
66 {
67 struct xfs_inogrp ig1;
68
69 xfs_inumbers_to_inogrp(&ig1, igrp);
70 if (copy_to_user(breq->ubuffer, &ig1, sizeof(struct xfs_inogrp)))
71 return -EFAULT;
72 return xfs_ibulk_advance(breq, sizeof(struct xfs_inogrp));
73 }
74
75 STATIC int
xfs_ioc_fsbulkstat(struct file * file,unsigned int cmd,void __user * arg)76 xfs_ioc_fsbulkstat(
77 struct file *file,
78 unsigned int cmd,
79 void __user *arg)
80 {
81 struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount;
82 struct xfs_fsop_bulkreq bulkreq;
83 struct xfs_ibulk breq = {
84 .mp = mp,
85 .idmap = file_mnt_idmap(file),
86 .ocount = 0,
87 };
88 xfs_ino_t lastino;
89 int error;
90
91 /* done = 1 if there are more stats to get and if bulkstat */
92 /* should be called again (unused here, but used in dmapi) */
93
94 if (!capable(CAP_SYS_ADMIN))
95 return -EPERM;
96
97 if (xfs_is_shutdown(mp))
98 return -EIO;
99
100 if (copy_from_user(&bulkreq, arg, sizeof(struct xfs_fsop_bulkreq)))
101 return -EFAULT;
102
103 if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64)))
104 return -EFAULT;
105
106 if (bulkreq.icount <= 0)
107 return -EINVAL;
108
109 if (bulkreq.ubuffer == NULL)
110 return -EINVAL;
111
112 breq.ubuffer = bulkreq.ubuffer;
113 breq.icount = bulkreq.icount;
114
115 /*
116 * FSBULKSTAT_SINGLE expects that *lastip contains the inode number
117 * that we want to stat. However, FSINUMBERS and FSBULKSTAT expect
118 * that *lastip contains either zero or the number of the last inode to
119 * be examined by the previous call and return results starting with
120 * the next inode after that. The new bulk request back end functions
121 * take the inode to start with, so we have to compute the startino
122 * parameter from lastino to maintain correct function. lastino == 0
123 * is a special case because it has traditionally meant "first inode
124 * in filesystem".
125 */
126 if (cmd == XFS_IOC_FSINUMBERS) {
127 breq.startino = lastino ? lastino + 1 : 0;
128 error = xfs_inumbers(&breq, xfs_fsinumbers_fmt);
129 lastino = breq.startino - 1;
130 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) {
131 breq.startino = lastino;
132 breq.icount = 1;
133 error = xfs_bulkstat_one(&breq, xfs_fsbulkstat_one_fmt);
134 } else { /* XFS_IOC_FSBULKSTAT */
135 breq.startino = lastino ? lastino + 1 : 0;
136 error = xfs_bulkstat(&breq, xfs_fsbulkstat_one_fmt);
137 lastino = breq.startino - 1;
138 }
139
140 if (error)
141 return error;
142
143 if (bulkreq.lastip != NULL &&
144 copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t)))
145 return -EFAULT;
146
147 if (bulkreq.ocount != NULL &&
148 copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32)))
149 return -EFAULT;
150
151 return 0;
152 }
153
154 /* Return 0 on success or positive error */
155 static int
xfs_bulkstat_fmt(struct xfs_ibulk * breq,const struct xfs_bulkstat * bstat)156 xfs_bulkstat_fmt(
157 struct xfs_ibulk *breq,
158 const struct xfs_bulkstat *bstat)
159 {
160 if (copy_to_user(breq->ubuffer, bstat, sizeof(struct xfs_bulkstat)))
161 return -EFAULT;
162 return xfs_ibulk_advance(breq, sizeof(struct xfs_bulkstat));
163 }
164
165 /*
166 * Check the incoming bulk request @hdr from userspace and initialize the
167 * internal @breq bulk request appropriately. Returns 0 if the bulk request
168 * should proceed; -ECANCELED if there's nothing to do; or the usual
169 * negative error code.
170 */
171 static int
xfs_bulk_ireq_setup(struct xfs_mount * mp,const struct xfs_bulk_ireq * hdr,struct xfs_ibulk * breq,void __user * ubuffer)172 xfs_bulk_ireq_setup(
173 struct xfs_mount *mp,
174 const struct xfs_bulk_ireq *hdr,
175 struct xfs_ibulk *breq,
176 void __user *ubuffer)
177 {
178 if (hdr->icount == 0 ||
179 (hdr->flags & ~XFS_BULK_IREQ_FLAGS_ALL) ||
180 memchr_inv(hdr->reserved, 0, sizeof(hdr->reserved)))
181 return -EINVAL;
182
183 breq->startino = hdr->ino;
184 breq->ubuffer = ubuffer;
185 breq->icount = hdr->icount;
186 breq->ocount = 0;
187 breq->flags = 0;
188
189 /*
190 * The @ino parameter is a special value, so we must look it up here.
191 * We're not allowed to have IREQ_AGNO, and we only return one inode
192 * worth of data.
193 */
194 if (hdr->flags & XFS_BULK_IREQ_SPECIAL) {
195 if (hdr->flags & XFS_BULK_IREQ_AGNO)
196 return -EINVAL;
197
198 switch (hdr->ino) {
199 case XFS_BULK_IREQ_SPECIAL_ROOT:
200 breq->startino = mp->m_sb.sb_rootino;
201 break;
202 default:
203 return -EINVAL;
204 }
205 breq->icount = 1;
206 }
207
208 /*
209 * The IREQ_AGNO flag means that we only want results from a given AG.
210 * If @hdr->ino is zero, we start iterating in that AG. If @hdr->ino is
211 * beyond the specified AG then we return no results.
212 */
213 if (hdr->flags & XFS_BULK_IREQ_AGNO) {
214 if (hdr->agno >= mp->m_sb.sb_agcount)
215 return -EINVAL;
216
217 if (breq->startino == 0)
218 breq->startino = XFS_AGINO_TO_INO(mp, hdr->agno, 0);
219 else if (XFS_INO_TO_AGNO(mp, breq->startino) < hdr->agno)
220 return -EINVAL;
221
222 breq->iwalk_flags |= XFS_IWALK_SAME_AG;
223
224 /* Asking for an inode past the end of the AG? We're done! */
225 if (XFS_INO_TO_AGNO(mp, breq->startino) > hdr->agno)
226 return -ECANCELED;
227 } else if (hdr->agno)
228 return -EINVAL;
229
230 /* Asking for an inode past the end of the FS? We're done! */
231 if (XFS_INO_TO_AGNO(mp, breq->startino) >= mp->m_sb.sb_agcount)
232 return -ECANCELED;
233
234 if (hdr->flags & XFS_BULK_IREQ_NREXT64)
235 breq->flags |= XFS_IBULK_NREXT64;
236
237 /* Caller wants to see metadata directories in bulkstat output. */
238 if (hdr->flags & XFS_BULK_IREQ_METADIR)
239 breq->flags |= XFS_IBULK_METADIR;
240
241 return 0;
242 }
243
244 /*
245 * Update the userspace bulk request @hdr to reflect the end state of the
246 * internal bulk request @breq.
247 */
248 static void
xfs_bulk_ireq_teardown(struct xfs_bulk_ireq * hdr,struct xfs_ibulk * breq)249 xfs_bulk_ireq_teardown(
250 struct xfs_bulk_ireq *hdr,
251 struct xfs_ibulk *breq)
252 {
253 hdr->ino = breq->startino;
254 hdr->ocount = breq->ocount;
255 }
256
257 /* Handle the v5 bulkstat ioctl. */
258 STATIC int
xfs_ioc_bulkstat(struct file * file,unsigned int cmd,struct xfs_bulkstat_req __user * arg)259 xfs_ioc_bulkstat(
260 struct file *file,
261 unsigned int cmd,
262 struct xfs_bulkstat_req __user *arg)
263 {
264 struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount;
265 struct xfs_bulk_ireq hdr;
266 struct xfs_ibulk breq = {
267 .mp = mp,
268 .idmap = file_mnt_idmap(file),
269 };
270 int error;
271
272 if (!capable(CAP_SYS_ADMIN))
273 return -EPERM;
274
275 if (xfs_is_shutdown(mp))
276 return -EIO;
277
278 if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr)))
279 return -EFAULT;
280
281 error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->bulkstat);
282 if (error == -ECANCELED)
283 goto out_teardown;
284 if (error < 0)
285 return error;
286
287 error = xfs_bulkstat(&breq, xfs_bulkstat_fmt);
288 if (error)
289 return error;
290
291 out_teardown:
292 xfs_bulk_ireq_teardown(&hdr, &breq);
293 if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr)))
294 return -EFAULT;
295
296 return 0;
297 }
298
299 STATIC int
xfs_inumbers_fmt(struct xfs_ibulk * breq,const struct xfs_inumbers * igrp)300 xfs_inumbers_fmt(
301 struct xfs_ibulk *breq,
302 const struct xfs_inumbers *igrp)
303 {
304 if (copy_to_user(breq->ubuffer, igrp, sizeof(struct xfs_inumbers)))
305 return -EFAULT;
306 return xfs_ibulk_advance(breq, sizeof(struct xfs_inumbers));
307 }
308
309 /* Handle the v5 inumbers ioctl. */
310 STATIC int
xfs_ioc_inumbers(struct xfs_mount * mp,unsigned int cmd,struct xfs_inumbers_req __user * arg)311 xfs_ioc_inumbers(
312 struct xfs_mount *mp,
313 unsigned int cmd,
314 struct xfs_inumbers_req __user *arg)
315 {
316 struct xfs_bulk_ireq hdr;
317 struct xfs_ibulk breq = {
318 .mp = mp,
319 };
320 int error;
321
322 if (!capable(CAP_SYS_ADMIN))
323 return -EPERM;
324
325 if (xfs_is_shutdown(mp))
326 return -EIO;
327
328 if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr)))
329 return -EFAULT;
330
331 if (hdr.flags & XFS_BULK_IREQ_METADIR)
332 return -EINVAL;
333
334 error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->inumbers);
335 if (error == -ECANCELED)
336 goto out_teardown;
337 if (error < 0)
338 return error;
339
340 error = xfs_inumbers(&breq, xfs_inumbers_fmt);
341 if (error)
342 return error;
343
344 out_teardown:
345 xfs_bulk_ireq_teardown(&hdr, &breq);
346 if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr)))
347 return -EFAULT;
348
349 return 0;
350 }
351
352 STATIC int
xfs_ioc_fsgeometry(struct xfs_mount * mp,void __user * arg,int struct_version)353 xfs_ioc_fsgeometry(
354 struct xfs_mount *mp,
355 void __user *arg,
356 int struct_version)
357 {
358 struct xfs_fsop_geom fsgeo;
359 size_t len;
360
361 xfs_fs_geometry(mp, &fsgeo, struct_version);
362
363 if (struct_version <= 3)
364 len = sizeof(struct xfs_fsop_geom_v1);
365 else if (struct_version == 4)
366 len = sizeof(struct xfs_fsop_geom_v4);
367 else {
368 xfs_fsop_geom_health(mp, &fsgeo);
369 len = sizeof(fsgeo);
370 }
371
372 if (copy_to_user(arg, &fsgeo, len))
373 return -EFAULT;
374 return 0;
375 }
376
377 STATIC int
xfs_ioc_ag_geometry(struct xfs_mount * mp,void __user * arg)378 xfs_ioc_ag_geometry(
379 struct xfs_mount *mp,
380 void __user *arg)
381 {
382 struct xfs_perag *pag;
383 struct xfs_ag_geometry ageo;
384 int error;
385
386 if (copy_from_user(&ageo, arg, sizeof(ageo)))
387 return -EFAULT;
388 if (ageo.ag_flags)
389 return -EINVAL;
390 if (memchr_inv(&ageo.ag_reserved, 0, sizeof(ageo.ag_reserved)))
391 return -EINVAL;
392
393 pag = xfs_perag_get(mp, ageo.ag_number);
394 if (!pag)
395 return -EINVAL;
396
397 error = xfs_ag_get_geometry(pag, &ageo);
398 xfs_perag_put(pag);
399 if (error)
400 return error;
401
402 if (copy_to_user(arg, &ageo, sizeof(ageo)))
403 return -EFAULT;
404 return 0;
405 }
406
407 STATIC int
xfs_ioc_rtgroup_geometry(struct xfs_mount * mp,void __user * arg)408 xfs_ioc_rtgroup_geometry(
409 struct xfs_mount *mp,
410 void __user *arg)
411 {
412 struct xfs_rtgroup *rtg;
413 struct xfs_rtgroup_geometry rgeo;
414 int error;
415
416 if (copy_from_user(&rgeo, arg, sizeof(rgeo)))
417 return -EFAULT;
418 if (rgeo.rg_flags)
419 return -EINVAL;
420 if (memchr_inv(&rgeo.rg_reserved, 0, sizeof(rgeo.rg_reserved)))
421 return -EINVAL;
422 if (!xfs_has_rtgroups(mp))
423 return -EINVAL;
424
425 rtg = xfs_rtgroup_get(mp, rgeo.rg_number);
426 if (!rtg)
427 return -EINVAL;
428
429 error = xfs_rtgroup_get_geometry(rtg, &rgeo);
430 xfs_rtgroup_put(rtg);
431 if (error)
432 return error;
433
434 if (copy_to_user(arg, &rgeo, sizeof(rgeo)))
435 return -EFAULT;
436 return 0;
437 }
438
439 /*
440 * Linux extended inode flags interface.
441 */
442
443 static void
xfs_fill_fsxattr(struct xfs_inode * ip,int whichfork,struct file_kattr * fa)444 xfs_fill_fsxattr(
445 struct xfs_inode *ip,
446 int whichfork,
447 struct file_kattr *fa)
448 {
449 struct xfs_mount *mp = ip->i_mount;
450 struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork);
451
452 fileattr_fill_xflags(fa, xfs_ip2xflags(ip));
453
454 if (ip->i_diflags & XFS_DIFLAG_EXTSIZE) {
455 fa->fsx_extsize = XFS_FSB_TO_B(mp, ip->i_extsize);
456 } else if (ip->i_diflags & XFS_DIFLAG_EXTSZINHERIT) {
457 /*
458 * Don't let a misaligned extent size hint on a directory
459 * escape to userspace if it won't pass the setattr checks
460 * later.
461 */
462 if ((ip->i_diflags & XFS_DIFLAG_RTINHERIT) &&
463 xfs_extlen_to_rtxmod(mp, ip->i_extsize) > 0) {
464 fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE |
465 FS_XFLAG_EXTSZINHERIT);
466 fa->fsx_extsize = 0;
467 } else {
468 fa->fsx_extsize = XFS_FSB_TO_B(mp, ip->i_extsize);
469 }
470 }
471
472 if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE) {
473 /*
474 * Don't let a misaligned CoW extent size hint on a directory
475 * escape to userspace if it won't pass the setattr checks
476 * later.
477 */
478 if ((ip->i_diflags & XFS_DIFLAG_RTINHERIT) &&
479 ip->i_cowextsize % mp->m_sb.sb_rextsize > 0) {
480 fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;
481 fa->fsx_cowextsize = 0;
482 } else {
483 fa->fsx_cowextsize = XFS_FSB_TO_B(mp, ip->i_cowextsize);
484 }
485 }
486
487 fa->fsx_projid = ip->i_projid;
488 if (ifp && !xfs_need_iread_extents(ifp))
489 fa->fsx_nextents = xfs_iext_count(ifp);
490 else
491 fa->fsx_nextents = xfs_ifork_nextents(ifp);
492 }
493
494 STATIC int
xfs_ioc_fsgetxattra(xfs_inode_t * ip,void __user * arg)495 xfs_ioc_fsgetxattra(
496 xfs_inode_t *ip,
497 void __user *arg)
498 {
499 struct file_kattr fa;
500
501 xfs_ilock(ip, XFS_ILOCK_SHARED);
502 xfs_fill_fsxattr(ip, XFS_ATTR_FORK, &fa);
503 xfs_iunlock(ip, XFS_ILOCK_SHARED);
504
505 return copy_fsxattr_to_user(&fa, arg);
506 }
507
508 int
xfs_fileattr_get(struct dentry * dentry,struct file_kattr * fa)509 xfs_fileattr_get(
510 struct dentry *dentry,
511 struct file_kattr *fa)
512 {
513 struct xfs_inode *ip = XFS_I(d_inode(dentry));
514
515 xfs_ilock(ip, XFS_ILOCK_SHARED);
516 xfs_fill_fsxattr(ip, XFS_DATA_FORK, fa);
517 xfs_iunlock(ip, XFS_ILOCK_SHARED);
518
519 return 0;
520 }
521
522 static int
xfs_ioctl_setattr_xflags(struct xfs_trans * tp,struct xfs_inode * ip,struct file_kattr * fa)523 xfs_ioctl_setattr_xflags(
524 struct xfs_trans *tp,
525 struct xfs_inode *ip,
526 struct file_kattr *fa)
527 {
528 struct xfs_mount *mp = ip->i_mount;
529 bool rtflag = (fa->fsx_xflags & FS_XFLAG_REALTIME);
530 uint64_t i_flags2;
531
532 if (rtflag != XFS_IS_REALTIME_INODE(ip)) {
533 /* Can't change realtime flag if any extents are allocated. */
534 if (xfs_inode_has_filedata(ip))
535 return -EINVAL;
536
537 /*
538 * If S_DAX is enabled on this file, we can only switch the
539 * device if both support fsdax. We can't update S_DAX because
540 * there might be other threads walking down the access paths.
541 */
542 if (IS_DAX(VFS_I(ip)) &&
543 (mp->m_ddev_targp->bt_daxdev == NULL ||
544 (mp->m_rtdev_targp &&
545 mp->m_rtdev_targp->bt_daxdev == NULL)))
546 return -EINVAL;
547 }
548
549 if (rtflag) {
550 /* If realtime flag is set then must have realtime device */
551 if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
552 xfs_extlen_to_rtxmod(mp, ip->i_extsize))
553 return -EINVAL;
554 }
555
556 /* diflags2 only valid for v3 inodes. */
557 i_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
558 if (i_flags2 && !xfs_has_v3inodes(mp))
559 return -EINVAL;
560
561 ip->i_diflags = xfs_flags2diflags(ip, fa->fsx_xflags);
562 ip->i_diflags2 = i_flags2;
563
564 xfs_diflags_to_iflags(ip, false);
565
566 /*
567 * Make the stable writes flag match that of the device the inode
568 * resides on when flipping the RT flag.
569 */
570 if (rtflag != XFS_IS_REALTIME_INODE(ip) && S_ISREG(VFS_I(ip)->i_mode))
571 xfs_update_stable_writes(ip);
572
573 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
574 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
575 XFS_STATS_INC(mp, xs_ig_attrchg);
576 return 0;
577 }
578
579 static void
xfs_ioctl_setattr_prepare_dax(struct xfs_inode * ip,struct file_kattr * fa)580 xfs_ioctl_setattr_prepare_dax(
581 struct xfs_inode *ip,
582 struct file_kattr *fa)
583 {
584 struct xfs_mount *mp = ip->i_mount;
585 struct inode *inode = VFS_I(ip);
586
587 if (S_ISDIR(inode->i_mode))
588 return;
589
590 if (xfs_has_dax_always(mp) || xfs_has_dax_never(mp))
591 return;
592
593 if (((fa->fsx_xflags & FS_XFLAG_DAX) &&
594 !(ip->i_diflags2 & XFS_DIFLAG2_DAX)) ||
595 (!(fa->fsx_xflags & FS_XFLAG_DAX) &&
596 (ip->i_diflags2 & XFS_DIFLAG2_DAX)))
597 d_mark_dontcache(inode);
598 }
599
600 /*
601 * Set up the transaction structure for the setattr operation, checking that we
602 * have permission to do so. On success, return a clean transaction and the
603 * inode locked exclusively ready for further operation specific checks. On
604 * failure, return an error without modifying or locking the inode.
605 */
606 static struct xfs_trans *
xfs_ioctl_setattr_get_trans(struct xfs_inode * ip,struct xfs_dquot * pdqp)607 xfs_ioctl_setattr_get_trans(
608 struct xfs_inode *ip,
609 struct xfs_dquot *pdqp)
610 {
611 struct xfs_mount *mp = ip->i_mount;
612 struct xfs_trans *tp;
613 int error = -EROFS;
614
615 if (xfs_is_readonly(mp))
616 goto out_error;
617 error = -EIO;
618 if (xfs_is_shutdown(mp))
619 goto out_error;
620
621 error = xfs_trans_alloc_ichange(ip, NULL, NULL, pdqp,
622 has_capability_noaudit(current, CAP_FOWNER), &tp);
623 if (error)
624 goto out_error;
625
626 if (xfs_has_wsync(mp))
627 xfs_trans_set_sync(tp);
628
629 return tp;
630
631 out_error:
632 return ERR_PTR(error);
633 }
634
635 /*
636 * Validate a proposed extent size hint. For regular files, the hint can only
637 * be changed if no extents are allocated.
638 */
639 static int
xfs_ioctl_setattr_check_extsize(struct xfs_inode * ip,struct file_kattr * fa)640 xfs_ioctl_setattr_check_extsize(
641 struct xfs_inode *ip,
642 struct file_kattr *fa)
643 {
644 struct xfs_mount *mp = ip->i_mount;
645 xfs_failaddr_t failaddr;
646 uint16_t new_diflags;
647
648 if (!fa->fsx_valid)
649 return 0;
650
651 if (S_ISREG(VFS_I(ip)->i_mode) && xfs_inode_has_filedata(ip) &&
652 XFS_FSB_TO_B(mp, ip->i_extsize) != fa->fsx_extsize)
653 return -EINVAL;
654
655 if (fa->fsx_extsize & mp->m_blockmask)
656 return -EINVAL;
657
658 new_diflags = xfs_flags2diflags(ip, fa->fsx_xflags);
659
660 /*
661 * Inode verifiers do not check that the extent size hint is an integer
662 * multiple of the rt extent size on a directory with both rtinherit
663 * and extszinherit flags set. Don't let sysadmins misconfigure
664 * directories.
665 */
666 if ((new_diflags & XFS_DIFLAG_RTINHERIT) &&
667 (new_diflags & XFS_DIFLAG_EXTSZINHERIT)) {
668 unsigned int rtextsize_bytes;
669
670 rtextsize_bytes = XFS_FSB_TO_B(mp, mp->m_sb.sb_rextsize);
671 if (fa->fsx_extsize % rtextsize_bytes)
672 return -EINVAL;
673 }
674
675 failaddr = xfs_inode_validate_extsize(ip->i_mount,
676 XFS_B_TO_FSB(mp, fa->fsx_extsize),
677 VFS_I(ip)->i_mode, new_diflags);
678 return failaddr != NULL ? -EINVAL : 0;
679 }
680
681 static int
xfs_ioctl_setattr_check_cowextsize(struct xfs_inode * ip,struct file_kattr * fa)682 xfs_ioctl_setattr_check_cowextsize(
683 struct xfs_inode *ip,
684 struct file_kattr *fa)
685 {
686 struct xfs_mount *mp = ip->i_mount;
687 xfs_failaddr_t failaddr;
688 uint64_t new_diflags2;
689 uint16_t new_diflags;
690
691 if (!fa->fsx_valid)
692 return 0;
693
694 if (fa->fsx_cowextsize & mp->m_blockmask)
695 return -EINVAL;
696
697 new_diflags = xfs_flags2diflags(ip, fa->fsx_xflags);
698 new_diflags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
699
700 failaddr = xfs_inode_validate_cowextsize(ip->i_mount,
701 XFS_B_TO_FSB(mp, fa->fsx_cowextsize),
702 VFS_I(ip)->i_mode, new_diflags, new_diflags2);
703 return failaddr != NULL ? -EINVAL : 0;
704 }
705
706 static int
xfs_ioctl_setattr_check_projid(struct xfs_inode * ip,struct file_kattr * fa)707 xfs_ioctl_setattr_check_projid(
708 struct xfs_inode *ip,
709 struct file_kattr *fa)
710 {
711 if (!fa->fsx_valid)
712 return 0;
713
714 /* Disallow 32bit project ids if 32bit IDs are not enabled. */
715 if (fa->fsx_projid > (uint16_t)-1 &&
716 !xfs_has_projid32(ip->i_mount))
717 return -EINVAL;
718 return 0;
719 }
720
721 int
xfs_fileattr_set(struct mnt_idmap * idmap,struct dentry * dentry,struct file_kattr * fa)722 xfs_fileattr_set(
723 struct mnt_idmap *idmap,
724 struct dentry *dentry,
725 struct file_kattr *fa)
726 {
727 struct xfs_inode *ip = XFS_I(d_inode(dentry));
728 struct xfs_mount *mp = ip->i_mount;
729 struct xfs_trans *tp;
730 struct xfs_dquot *pdqp = NULL;
731 struct xfs_dquot *olddquot = NULL;
732 int error;
733
734 trace_xfs_ioctl_setattr(ip);
735
736 if (!fa->fsx_valid) {
737 if (fa->flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL |
738 FS_NOATIME_FL | FS_NODUMP_FL |
739 FS_SYNC_FL | FS_DAX_FL | FS_PROJINHERIT_FL))
740 return -EOPNOTSUPP;
741 }
742
743 error = xfs_ioctl_setattr_check_projid(ip, fa);
744 if (error)
745 return error;
746
747 /*
748 * If disk quotas is on, we make sure that the dquots do exist on disk,
749 * before we start any other transactions. Trying to do this later
750 * is messy. We don't care to take a readlock to look at the ids
751 * in inode here, because we can't hold it across the trans_reserve.
752 * If the IDs do change before we take the ilock, we're covered
753 * because the i_*dquot fields will get updated anyway.
754 */
755 if (fa->fsx_valid && XFS_IS_QUOTA_ON(mp)) {
756 error = xfs_qm_vop_dqalloc(ip, VFS_I(ip)->i_uid,
757 VFS_I(ip)->i_gid, fa->fsx_projid,
758 XFS_QMOPT_PQUOTA, NULL, NULL, &pdqp);
759 if (error)
760 return error;
761 }
762
763 xfs_ioctl_setattr_prepare_dax(ip, fa);
764
765 tp = xfs_ioctl_setattr_get_trans(ip, pdqp);
766 if (IS_ERR(tp)) {
767 error = PTR_ERR(tp);
768 goto error_free_dquots;
769 }
770
771 error = xfs_ioctl_setattr_check_extsize(ip, fa);
772 if (error)
773 goto error_trans_cancel;
774
775 error = xfs_ioctl_setattr_check_cowextsize(ip, fa);
776 if (error)
777 goto error_trans_cancel;
778
779 error = xfs_ioctl_setattr_xflags(tp, ip, fa);
780 if (error)
781 goto error_trans_cancel;
782
783 if (!fa->fsx_valid)
784 goto skip_xattr;
785 /*
786 * Change file ownership. Must be the owner or privileged. CAP_FSETID
787 * overrides the following restrictions:
788 *
789 * The set-user-ID and set-group-ID bits of a file will be cleared upon
790 * successful return from chown()
791 */
792
793 if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) &&
794 !capable_wrt_inode_uidgid(idmap, VFS_I(ip), CAP_FSETID))
795 VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID);
796
797 /* Change the ownerships and register project quota modifications */
798 if (ip->i_projid != fa->fsx_projid) {
799 if (XFS_IS_PQUOTA_ON(mp)) {
800 olddquot = xfs_qm_vop_chown(tp, ip,
801 &ip->i_pdquot, pdqp);
802 }
803 ip->i_projid = fa->fsx_projid;
804 }
805
806 /*
807 * Only set the extent size hint if we've already determined that the
808 * extent size hint should be set on the inode. If no extent size flags
809 * are set on the inode then unconditionally clear the extent size hint.
810 */
811 if (ip->i_diflags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT))
812 ip->i_extsize = XFS_B_TO_FSB(mp, fa->fsx_extsize);
813 else
814 ip->i_extsize = 0;
815
816 if (xfs_has_v3inodes(mp)) {
817 if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE)
818 ip->i_cowextsize = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
819 else
820 ip->i_cowextsize = 0;
821 }
822
823 skip_xattr:
824 error = xfs_trans_commit(tp);
825
826 /*
827 * Release any dquot(s) the inode had kept before chown.
828 */
829 xfs_qm_dqrele(olddquot);
830 xfs_qm_dqrele(pdqp);
831
832 return error;
833
834 error_trans_cancel:
835 xfs_trans_cancel(tp);
836 error_free_dquots:
837 xfs_qm_dqrele(pdqp);
838 return error;
839 }
840
841 static bool
xfs_getbmap_format(struct kgetbmap * p,struct getbmapx __user * u,size_t recsize)842 xfs_getbmap_format(
843 struct kgetbmap *p,
844 struct getbmapx __user *u,
845 size_t recsize)
846 {
847 if (put_user(p->bmv_offset, &u->bmv_offset) ||
848 put_user(p->bmv_block, &u->bmv_block) ||
849 put_user(p->bmv_length, &u->bmv_length) ||
850 put_user(0, &u->bmv_count) ||
851 put_user(0, &u->bmv_entries))
852 return false;
853 if (recsize < sizeof(struct getbmapx))
854 return true;
855 if (put_user(0, &u->bmv_iflags) ||
856 put_user(p->bmv_oflags, &u->bmv_oflags) ||
857 put_user(0, &u->bmv_unused1) ||
858 put_user(0, &u->bmv_unused2))
859 return false;
860 return true;
861 }
862
863 STATIC int
xfs_ioc_getbmap(struct file * file,unsigned int cmd,void __user * arg)864 xfs_ioc_getbmap(
865 struct file *file,
866 unsigned int cmd,
867 void __user *arg)
868 {
869 struct getbmapx bmx = { 0 };
870 struct kgetbmap *buf;
871 size_t recsize;
872 int error, i;
873
874 switch (cmd) {
875 case XFS_IOC_GETBMAPA:
876 bmx.bmv_iflags = BMV_IF_ATTRFORK;
877 fallthrough;
878 case XFS_IOC_GETBMAP:
879 /* struct getbmap is a strict subset of struct getbmapx. */
880 recsize = sizeof(struct getbmap);
881 break;
882 case XFS_IOC_GETBMAPX:
883 recsize = sizeof(struct getbmapx);
884 break;
885 default:
886 return -EINVAL;
887 }
888
889 if (copy_from_user(&bmx, arg, recsize))
890 return -EFAULT;
891
892 if (bmx.bmv_count < 2)
893 return -EINVAL;
894 if (bmx.bmv_count >= INT_MAX / recsize)
895 return -ENOMEM;
896
897 buf = kvcalloc(bmx.bmv_count, sizeof(*buf), GFP_KERNEL);
898 if (!buf)
899 return -ENOMEM;
900
901 error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, buf);
902 if (error)
903 goto out_free_buf;
904
905 error = -EFAULT;
906 if (copy_to_user(arg, &bmx, recsize))
907 goto out_free_buf;
908 arg += recsize;
909
910 for (i = 0; i < bmx.bmv_entries; i++) {
911 if (!xfs_getbmap_format(buf + i, arg, recsize))
912 goto out_free_buf;
913 arg += recsize;
914 }
915
916 error = 0;
917 out_free_buf:
918 kvfree(buf);
919 return error;
920 }
921
922 int
xfs_ioc_swapext(xfs_swapext_t * sxp)923 xfs_ioc_swapext(
924 xfs_swapext_t *sxp)
925 {
926 xfs_inode_t *ip, *tip;
927
928 /* Pull information for the target fd */
929 CLASS(fd, f)((int)sxp->sx_fdtarget);
930 if (fd_empty(f))
931 return -EINVAL;
932
933 if (!(fd_file(f)->f_mode & FMODE_WRITE) ||
934 !(fd_file(f)->f_mode & FMODE_READ) ||
935 (fd_file(f)->f_flags & O_APPEND))
936 return -EBADF;
937
938 CLASS(fd, tmp)((int)sxp->sx_fdtmp);
939 if (fd_empty(tmp))
940 return -EINVAL;
941
942 if (!(fd_file(tmp)->f_mode & FMODE_WRITE) ||
943 !(fd_file(tmp)->f_mode & FMODE_READ) ||
944 (fd_file(tmp)->f_flags & O_APPEND))
945 return -EBADF;
946
947 if (IS_SWAPFILE(file_inode(fd_file(f))) ||
948 IS_SWAPFILE(file_inode(fd_file(tmp))))
949 return -EINVAL;
950
951 /*
952 * We need to ensure that the fds passed in point to XFS inodes
953 * before we cast and access them as XFS structures as we have no
954 * control over what the user passes us here.
955 */
956 if (fd_file(f)->f_op != &xfs_file_operations ||
957 fd_file(tmp)->f_op != &xfs_file_operations)
958 return -EINVAL;
959
960 ip = XFS_I(file_inode(fd_file(f)));
961 tip = XFS_I(file_inode(fd_file(tmp)));
962
963 if (ip->i_mount != tip->i_mount)
964 return -EINVAL;
965
966 if (ip->i_ino == tip->i_ino)
967 return -EINVAL;
968
969 if (xfs_is_shutdown(ip->i_mount))
970 return -EIO;
971
972 return xfs_swap_extents(ip, tip, sxp);
973 }
974
975 static int
xfs_ioc_getlabel(struct xfs_mount * mp,char __user * user_label)976 xfs_ioc_getlabel(
977 struct xfs_mount *mp,
978 char __user *user_label)
979 {
980 struct xfs_sb *sbp = &mp->m_sb;
981 char label[XFSLABEL_MAX + 1];
982
983 /* Paranoia */
984 BUILD_BUG_ON(sizeof(sbp->sb_fname) > FSLABEL_MAX);
985
986 /* 1 larger than sb_fname, so this ensures a trailing NUL char */
987 spin_lock(&mp->m_sb_lock);
988 memtostr_pad(label, sbp->sb_fname);
989 spin_unlock(&mp->m_sb_lock);
990
991 if (copy_to_user(user_label, label, sizeof(label)))
992 return -EFAULT;
993 return 0;
994 }
995
996 static int
xfs_ioc_setlabel(struct file * filp,struct xfs_mount * mp,char __user * newlabel)997 xfs_ioc_setlabel(
998 struct file *filp,
999 struct xfs_mount *mp,
1000 char __user *newlabel)
1001 {
1002 struct xfs_sb *sbp = &mp->m_sb;
1003 char label[XFSLABEL_MAX + 1];
1004 size_t len;
1005 int error;
1006
1007 if (!capable(CAP_SYS_ADMIN))
1008 return -EPERM;
1009 /*
1010 * The generic ioctl allows up to FSLABEL_MAX chars, but XFS is much
1011 * smaller, at 12 bytes. We copy one more to be sure we find the
1012 * (required) NULL character to test the incoming label length.
1013 * NB: The on disk label doesn't need to be null terminated.
1014 */
1015 if (copy_from_user(label, newlabel, XFSLABEL_MAX + 1))
1016 return -EFAULT;
1017 len = strnlen(label, XFSLABEL_MAX + 1);
1018 if (len > sizeof(sbp->sb_fname))
1019 return -EINVAL;
1020
1021 error = mnt_want_write_file(filp);
1022 if (error)
1023 return error;
1024
1025 spin_lock(&mp->m_sb_lock);
1026 memset(sbp->sb_fname, 0, sizeof(sbp->sb_fname));
1027 memcpy(sbp->sb_fname, label, len);
1028 spin_unlock(&mp->m_sb_lock);
1029
1030 /*
1031 * Now we do several things to satisfy userspace.
1032 * In addition to normal logging of the primary superblock, we also
1033 * immediately write these changes to sector zero for the primary, then
1034 * update all backup supers (as xfs_db does for a label change), then
1035 * invalidate the block device page cache. This is so that any prior
1036 * buffered reads from userspace (i.e. from blkid) are invalidated,
1037 * and userspace will see the newly-written label.
1038 */
1039 error = xfs_sync_sb_buf(mp, true);
1040 if (error)
1041 goto out;
1042 /*
1043 * growfs also updates backup supers so lock against that.
1044 */
1045 mutex_lock(&mp->m_growlock);
1046 error = xfs_update_secondary_sbs(mp);
1047 mutex_unlock(&mp->m_growlock);
1048
1049 invalidate_bdev(mp->m_ddev_targp->bt_bdev);
1050 if (xfs_has_rtsb(mp) && mp->m_rtdev_targp)
1051 invalidate_bdev(mp->m_rtdev_targp->bt_bdev);
1052
1053 out:
1054 mnt_drop_write_file(filp);
1055 return error;
1056 }
1057
1058 static inline int
xfs_fs_eofblocks_from_user(struct xfs_fs_eofblocks * src,struct xfs_icwalk * dst)1059 xfs_fs_eofblocks_from_user(
1060 struct xfs_fs_eofblocks *src,
1061 struct xfs_icwalk *dst)
1062 {
1063 if (src->eof_version != XFS_EOFBLOCKS_VERSION)
1064 return -EINVAL;
1065
1066 if (src->eof_flags & ~XFS_EOF_FLAGS_VALID)
1067 return -EINVAL;
1068
1069 if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) ||
1070 memchr_inv(src->pad64, 0, sizeof(src->pad64)))
1071 return -EINVAL;
1072
1073 dst->icw_flags = 0;
1074 if (src->eof_flags & XFS_EOF_FLAGS_SYNC)
1075 dst->icw_flags |= XFS_ICWALK_FLAG_SYNC;
1076 if (src->eof_flags & XFS_EOF_FLAGS_UID)
1077 dst->icw_flags |= XFS_ICWALK_FLAG_UID;
1078 if (src->eof_flags & XFS_EOF_FLAGS_GID)
1079 dst->icw_flags |= XFS_ICWALK_FLAG_GID;
1080 if (src->eof_flags & XFS_EOF_FLAGS_PRID)
1081 dst->icw_flags |= XFS_ICWALK_FLAG_PRID;
1082 if (src->eof_flags & XFS_EOF_FLAGS_MINFILESIZE)
1083 dst->icw_flags |= XFS_ICWALK_FLAG_MINFILESIZE;
1084
1085 dst->icw_prid = src->eof_prid;
1086 dst->icw_min_file_size = src->eof_min_file_size;
1087
1088 dst->icw_uid = INVALID_UID;
1089 if (src->eof_flags & XFS_EOF_FLAGS_UID) {
1090 dst->icw_uid = make_kuid(current_user_ns(), src->eof_uid);
1091 if (!uid_valid(dst->icw_uid))
1092 return -EINVAL;
1093 }
1094
1095 dst->icw_gid = INVALID_GID;
1096 if (src->eof_flags & XFS_EOF_FLAGS_GID) {
1097 dst->icw_gid = make_kgid(current_user_ns(), src->eof_gid);
1098 if (!gid_valid(dst->icw_gid))
1099 return -EINVAL;
1100 }
1101 return 0;
1102 }
1103
1104 static int
xfs_ioctl_getset_resblocks(struct file * filp,unsigned int cmd,void __user * arg)1105 xfs_ioctl_getset_resblocks(
1106 struct file *filp,
1107 unsigned int cmd,
1108 void __user *arg)
1109 {
1110 struct xfs_mount *mp = XFS_I(file_inode(filp))->i_mount;
1111 struct xfs_fsop_resblks fsop = { };
1112 int error;
1113
1114 if (!capable(CAP_SYS_ADMIN))
1115 return -EPERM;
1116
1117 if (cmd == XFS_IOC_SET_RESBLKS) {
1118 if (xfs_is_readonly(mp))
1119 return -EROFS;
1120
1121 if (copy_from_user(&fsop, arg, sizeof(fsop)))
1122 return -EFAULT;
1123
1124 error = mnt_want_write_file(filp);
1125 if (error)
1126 return error;
1127 error = xfs_reserve_blocks(mp, XC_FREE_BLOCKS, fsop.resblks);
1128 mnt_drop_write_file(filp);
1129 if (error)
1130 return error;
1131 }
1132
1133 spin_lock(&mp->m_sb_lock);
1134 fsop.resblks = mp->m_free[XC_FREE_BLOCKS].res_total;
1135 fsop.resblks_avail = mp->m_free[XC_FREE_BLOCKS].res_avail;
1136 spin_unlock(&mp->m_sb_lock);
1137
1138 if (copy_to_user(arg, &fsop, sizeof(fsop)))
1139 return -EFAULT;
1140 return 0;
1141 }
1142
1143 static int
xfs_ioctl_fs_counts(struct xfs_mount * mp,struct xfs_fsop_counts __user * uarg)1144 xfs_ioctl_fs_counts(
1145 struct xfs_mount *mp,
1146 struct xfs_fsop_counts __user *uarg)
1147 {
1148 struct xfs_fsop_counts out = {
1149 .allocino = percpu_counter_read_positive(&mp->m_icount),
1150 .freeino = percpu_counter_read_positive(&mp->m_ifree),
1151 .freedata = xfs_estimate_freecounter(mp, XC_FREE_BLOCKS) -
1152 xfs_freecounter_unavailable(mp, XC_FREE_BLOCKS),
1153 .freertx = xfs_estimate_freecounter(mp, XC_FREE_RTEXTENTS),
1154 };
1155
1156 if (copy_to_user(uarg, &out, sizeof(out)))
1157 return -EFAULT;
1158 return 0;
1159 }
1160
1161 /*
1162 * These long-unused ioctls were removed from the official ioctl API in 5.17,
1163 * but retain these definitions so that we can log warnings about them.
1164 */
1165 #define XFS_IOC_ALLOCSP _IOW ('X', 10, struct xfs_flock64)
1166 #define XFS_IOC_FREESP _IOW ('X', 11, struct xfs_flock64)
1167 #define XFS_IOC_ALLOCSP64 _IOW ('X', 36, struct xfs_flock64)
1168 #define XFS_IOC_FREESP64 _IOW ('X', 37, struct xfs_flock64)
1169
1170 /*
1171 * Note: some of the ioctl's return positive numbers as a
1172 * byte count indicating success, such as readlink_by_handle.
1173 * So we don't "sign flip" like most other routines. This means
1174 * true errors need to be returned as a negative value.
1175 */
1176 long
xfs_file_ioctl(struct file * filp,unsigned int cmd,unsigned long p)1177 xfs_file_ioctl(
1178 struct file *filp,
1179 unsigned int cmd,
1180 unsigned long p)
1181 {
1182 struct inode *inode = file_inode(filp);
1183 struct xfs_inode *ip = XFS_I(inode);
1184 struct xfs_mount *mp = ip->i_mount;
1185 void __user *arg = (void __user *)p;
1186 int error;
1187
1188 trace_xfs_file_ioctl(ip);
1189
1190 switch (cmd) {
1191 case FITRIM:
1192 return xfs_ioc_trim(mp, arg);
1193 case FS_IOC_GETFSLABEL:
1194 return xfs_ioc_getlabel(mp, arg);
1195 case FS_IOC_SETFSLABEL:
1196 return xfs_ioc_setlabel(filp, mp, arg);
1197 case XFS_IOC_ALLOCSP:
1198 case XFS_IOC_FREESP:
1199 case XFS_IOC_ALLOCSP64:
1200 case XFS_IOC_FREESP64:
1201 xfs_warn_once(mp,
1202 "%s should use fallocate; XFS_IOC_{ALLOC,FREE}SP ioctl unsupported",
1203 current->comm);
1204 return -ENOTTY;
1205 case XFS_IOC_DIOINFO: {
1206 struct kstat st;
1207 struct dioattr da;
1208
1209 error = vfs_getattr(&filp->f_path, &st, STATX_DIOALIGN, 0);
1210 if (error)
1211 return error;
1212
1213 /*
1214 * Some userspace directly feeds the return value to
1215 * posix_memalign, which fails for values that are smaller than
1216 * the pointer size. Round up the value to not break userspace.
1217 */
1218 da.d_mem = roundup(st.dio_mem_align, sizeof(void *));
1219 da.d_miniosz = st.dio_offset_align;
1220 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1221 if (copy_to_user(arg, &da, sizeof(da)))
1222 return -EFAULT;
1223 return 0;
1224 }
1225
1226 case XFS_IOC_FSBULKSTAT_SINGLE:
1227 case XFS_IOC_FSBULKSTAT:
1228 case XFS_IOC_FSINUMBERS:
1229 return xfs_ioc_fsbulkstat(filp, cmd, arg);
1230
1231 case XFS_IOC_BULKSTAT:
1232 return xfs_ioc_bulkstat(filp, cmd, arg);
1233 case XFS_IOC_INUMBERS:
1234 return xfs_ioc_inumbers(mp, cmd, arg);
1235
1236 case XFS_IOC_FSGEOMETRY_V1:
1237 return xfs_ioc_fsgeometry(mp, arg, 3);
1238 case XFS_IOC_FSGEOMETRY_V4:
1239 return xfs_ioc_fsgeometry(mp, arg, 4);
1240 case XFS_IOC_FSGEOMETRY:
1241 return xfs_ioc_fsgeometry(mp, arg, 5);
1242
1243 case XFS_IOC_AG_GEOMETRY:
1244 return xfs_ioc_ag_geometry(mp, arg);
1245 case XFS_IOC_RTGROUP_GEOMETRY:
1246 return xfs_ioc_rtgroup_geometry(mp, arg);
1247
1248 case XFS_IOC_GETVERSION:
1249 return put_user(inode->i_generation, (int __user *)arg);
1250
1251 case XFS_IOC_FSGETXATTRA:
1252 return xfs_ioc_fsgetxattra(ip, arg);
1253 case XFS_IOC_GETPARENTS:
1254 return xfs_ioc_getparents(filp, arg);
1255 case XFS_IOC_GETPARENTS_BY_HANDLE:
1256 return xfs_ioc_getparents_by_handle(filp, arg);
1257 case XFS_IOC_GETBMAP:
1258 case XFS_IOC_GETBMAPA:
1259 case XFS_IOC_GETBMAPX:
1260 return xfs_ioc_getbmap(filp, cmd, arg);
1261
1262 case FS_IOC_GETFSMAP:
1263 return xfs_ioc_getfsmap(ip, arg);
1264
1265 case XFS_IOC_SCRUBV_METADATA:
1266 return xfs_ioc_scrubv_metadata(filp, arg);
1267 case XFS_IOC_SCRUB_METADATA:
1268 return xfs_ioc_scrub_metadata(filp, arg);
1269
1270 case XFS_IOC_FD_TO_HANDLE:
1271 case XFS_IOC_PATH_TO_HANDLE:
1272 case XFS_IOC_PATH_TO_FSHANDLE: {
1273 xfs_fsop_handlereq_t hreq;
1274
1275 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1276 return -EFAULT;
1277 return xfs_find_handle(cmd, &hreq);
1278 }
1279 case XFS_IOC_OPEN_BY_HANDLE: {
1280 xfs_fsop_handlereq_t hreq;
1281
1282 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1283 return -EFAULT;
1284 return xfs_open_by_handle(filp, &hreq);
1285 }
1286
1287 case XFS_IOC_READLINK_BY_HANDLE: {
1288 xfs_fsop_handlereq_t hreq;
1289
1290 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1291 return -EFAULT;
1292 return xfs_readlink_by_handle(filp, &hreq);
1293 }
1294 case XFS_IOC_ATTRLIST_BY_HANDLE:
1295 return xfs_attrlist_by_handle(filp, arg);
1296
1297 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1298 return xfs_attrmulti_by_handle(filp, arg);
1299
1300 case XFS_IOC_SWAPEXT: {
1301 struct xfs_swapext sxp;
1302
1303 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1304 return -EFAULT;
1305 error = mnt_want_write_file(filp);
1306 if (error)
1307 return error;
1308 error = xfs_ioc_swapext(&sxp);
1309 mnt_drop_write_file(filp);
1310 return error;
1311 }
1312
1313 case XFS_IOC_FSCOUNTS:
1314 return xfs_ioctl_fs_counts(mp, arg);
1315
1316 case XFS_IOC_SET_RESBLKS:
1317 case XFS_IOC_GET_RESBLKS:
1318 return xfs_ioctl_getset_resblocks(filp, cmd, arg);
1319
1320 case XFS_IOC_FSGROWFSDATA: {
1321 struct xfs_growfs_data in;
1322
1323 if (copy_from_user(&in, arg, sizeof(in)))
1324 return -EFAULT;
1325
1326 error = mnt_want_write_file(filp);
1327 if (error)
1328 return error;
1329 error = xfs_growfs_data(mp, &in);
1330 mnt_drop_write_file(filp);
1331 return error;
1332 }
1333
1334 case XFS_IOC_FSGROWFSLOG: {
1335 struct xfs_growfs_log in;
1336
1337 if (copy_from_user(&in, arg, sizeof(in)))
1338 return -EFAULT;
1339
1340 error = mnt_want_write_file(filp);
1341 if (error)
1342 return error;
1343 error = xfs_growfs_log(mp, &in);
1344 mnt_drop_write_file(filp);
1345 return error;
1346 }
1347
1348 case XFS_IOC_FSGROWFSRT: {
1349 xfs_growfs_rt_t in;
1350
1351 if (copy_from_user(&in, arg, sizeof(in)))
1352 return -EFAULT;
1353
1354 error = mnt_want_write_file(filp);
1355 if (error)
1356 return error;
1357 error = xfs_growfs_rt(mp, &in);
1358 mnt_drop_write_file(filp);
1359 return error;
1360 }
1361
1362 case XFS_IOC_GOINGDOWN: {
1363 uint32_t in;
1364
1365 if (!capable(CAP_SYS_ADMIN))
1366 return -EPERM;
1367
1368 if (get_user(in, (uint32_t __user *)arg))
1369 return -EFAULT;
1370
1371 return xfs_fs_goingdown(mp, in);
1372 }
1373
1374 case XFS_IOC_ERROR_INJECTION: {
1375 xfs_error_injection_t in;
1376
1377 if (!capable(CAP_SYS_ADMIN))
1378 return -EPERM;
1379
1380 if (copy_from_user(&in, arg, sizeof(in)))
1381 return -EFAULT;
1382
1383 return xfs_errortag_add(mp, in.errtag);
1384 }
1385
1386 case XFS_IOC_ERROR_CLEARALL:
1387 if (!capable(CAP_SYS_ADMIN))
1388 return -EPERM;
1389
1390 return xfs_errortag_clearall(mp);
1391
1392 case XFS_IOC_FREE_EOFBLOCKS: {
1393 struct xfs_fs_eofblocks eofb;
1394 struct xfs_icwalk icw;
1395
1396 if (!capable(CAP_SYS_ADMIN))
1397 return -EPERM;
1398
1399 if (xfs_is_readonly(mp))
1400 return -EROFS;
1401
1402 if (copy_from_user(&eofb, arg, sizeof(eofb)))
1403 return -EFAULT;
1404
1405 error = xfs_fs_eofblocks_from_user(&eofb, &icw);
1406 if (error)
1407 return error;
1408
1409 trace_xfs_ioc_free_eofblocks(mp, &icw, _RET_IP_);
1410
1411 sb_start_write(mp->m_super);
1412 error = xfs_blockgc_free_space(mp, &icw);
1413 sb_end_write(mp->m_super);
1414 return error;
1415 }
1416
1417 case XFS_IOC_EXCHANGE_RANGE:
1418 return xfs_ioc_exchange_range(filp, arg);
1419 case XFS_IOC_START_COMMIT:
1420 return xfs_ioc_start_commit(filp, arg);
1421 case XFS_IOC_COMMIT_RANGE:
1422 return xfs_ioc_commit_range(filp, arg);
1423
1424 default:
1425 return -ENOTTY;
1426 }
1427 }
1428