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18#include "xfs.h"
19#include "xfs_fs.h"
20#include "xfs_shared.h"
21#include "xfs_format.h"
22#include "xfs_log_format.h"
23#include "xfs_trans_resv.h"
24#include "xfs_mount.h"
25#include "xfs_da_format.h"
26#include "xfs_inode.h"
27#include "xfs_bmap.h"
28#include "xfs_bmap_util.h"
29#include "xfs_acl.h"
30#include "xfs_quota.h"
31#include "xfs_error.h"
32#include "xfs_attr.h"
33#include "xfs_trans.h"
34#include "xfs_trace.h"
35#include "xfs_icache.h"
36#include "xfs_symlink.h"
37#include "xfs_da_btree.h"
38#include "xfs_dir2.h"
39#include "xfs_trans_space.h"
40#include "xfs_pnfs.h"
41
42#include <linux/capability.h>
43#include <linux/xattr.h>
44#include <linux/posix_acl.h>
45#include <linux/security.h>
46#include <linux/fiemap.h>
47#include <linux/slab.h>
48
49
50
51
52
53
54
55
56
57
58static struct lock_class_key xfs_nondir_ilock_class;
59static struct lock_class_key xfs_dir_ilock_class;
60
61static int
62xfs_initxattrs(
63 struct inode *inode,
64 const struct xattr *xattr_array,
65 void *fs_info)
66{
67 const struct xattr *xattr;
68 struct xfs_inode *ip = XFS_I(inode);
69 int error = 0;
70
71 for (xattr = xattr_array; xattr->name != NULL; xattr++) {
72 error = xfs_attr_set(ip, xattr->name, xattr->value,
73 xattr->value_len, ATTR_SECURE);
74 if (error < 0)
75 break;
76 }
77 return error;
78}
79
80
81
82
83
84
85
86
87STATIC int
88xfs_init_security(
89 struct inode *inode,
90 struct inode *dir,
91 const struct qstr *qstr)
92{
93 return security_inode_init_security(inode, dir, qstr,
94 &xfs_initxattrs, NULL);
95}
96
97static void
98xfs_dentry_to_name(
99 struct xfs_name *namep,
100 struct dentry *dentry,
101 int mode)
102{
103 namep->name = dentry->d_name.name;
104 namep->len = dentry->d_name.len;
105 namep->type = xfs_mode_to_ftype[(mode & S_IFMT) >> S_SHIFT];
106}
107
108STATIC void
109xfs_cleanup_inode(
110 struct inode *dir,
111 struct inode *inode,
112 struct dentry *dentry)
113{
114 struct xfs_name teardown;
115
116
117
118
119
120
121 xfs_dentry_to_name(&teardown, dentry, 0);
122
123 xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
124}
125
126STATIC int
127xfs_generic_create(
128 struct inode *dir,
129 struct dentry *dentry,
130 umode_t mode,
131 dev_t rdev,
132 bool tmpfile)
133{
134 struct inode *inode;
135 struct xfs_inode *ip = NULL;
136 struct posix_acl *default_acl, *acl;
137 struct xfs_name name;
138 int error;
139
140
141
142
143
144 if (S_ISCHR(mode) || S_ISBLK(mode)) {
145 if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
146 return -EINVAL;
147 rdev = sysv_encode_dev(rdev);
148 } else {
149 rdev = 0;
150 }
151
152 error = posix_acl_create(dir, &mode, &default_acl, &acl);
153 if (error)
154 return error;
155
156 if (!tmpfile) {
157 xfs_dentry_to_name(&name, dentry, mode);
158 error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip);
159 } else {
160 error = xfs_create_tmpfile(XFS_I(dir), dentry, mode, &ip);
161 }
162 if (unlikely(error))
163 goto out_free_acl;
164
165 inode = VFS_I(ip);
166
167 error = xfs_init_security(inode, dir, &dentry->d_name);
168 if (unlikely(error))
169 goto out_cleanup_inode;
170
171#ifdef CONFIG_XFS_POSIX_ACL
172 if (default_acl) {
173 error = xfs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
174 if (error)
175 goto out_cleanup_inode;
176 }
177 if (acl) {
178 error = xfs_set_acl(inode, acl, ACL_TYPE_ACCESS);
179 if (error)
180 goto out_cleanup_inode;
181 }
182#endif
183
184 if (tmpfile)
185 d_tmpfile(dentry, inode);
186 else
187 d_instantiate(dentry, inode);
188
189 xfs_finish_inode_setup(ip);
190
191 out_free_acl:
192 if (default_acl)
193 posix_acl_release(default_acl);
194 if (acl)
195 posix_acl_release(acl);
196 return error;
197
198 out_cleanup_inode:
199 xfs_finish_inode_setup(ip);
200 if (!tmpfile)
201 xfs_cleanup_inode(dir, inode, dentry);
202 iput(inode);
203 goto out_free_acl;
204}
205
206STATIC int
207xfs_vn_mknod(
208 struct inode *dir,
209 struct dentry *dentry,
210 umode_t mode,
211 dev_t rdev)
212{
213 return xfs_generic_create(dir, dentry, mode, rdev, false);
214}
215
216STATIC int
217xfs_vn_create(
218 struct inode *dir,
219 struct dentry *dentry,
220 umode_t mode,
221 bool flags)
222{
223 return xfs_vn_mknod(dir, dentry, mode, 0);
224}
225
226STATIC int
227xfs_vn_mkdir(
228 struct inode *dir,
229 struct dentry *dentry,
230 umode_t mode)
231{
232 return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
233}
234
235STATIC struct dentry *
236xfs_vn_lookup(
237 struct inode *dir,
238 struct dentry *dentry,
239 unsigned int flags)
240{
241 struct xfs_inode *cip;
242 struct xfs_name name;
243 int error;
244
245 if (dentry->d_name.len >= MAXNAMELEN)
246 return ERR_PTR(-ENAMETOOLONG);
247
248 xfs_dentry_to_name(&name, dentry, 0);
249 error = xfs_lookup(XFS_I(dir), &name, &cip, NULL);
250 if (unlikely(error)) {
251 if (unlikely(error != -ENOENT))
252 return ERR_PTR(error);
253 d_add(dentry, NULL);
254 return NULL;
255 }
256
257 return d_splice_alias(VFS_I(cip), dentry);
258}
259
260STATIC struct dentry *
261xfs_vn_ci_lookup(
262 struct inode *dir,
263 struct dentry *dentry,
264 unsigned int flags)
265{
266 struct xfs_inode *ip;
267 struct xfs_name xname;
268 struct xfs_name ci_name;
269 struct qstr dname;
270 int error;
271
272 if (dentry->d_name.len >= MAXNAMELEN)
273 return ERR_PTR(-ENAMETOOLONG);
274
275 xfs_dentry_to_name(&xname, dentry, 0);
276 error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name);
277 if (unlikely(error)) {
278 if (unlikely(error != -ENOENT))
279 return ERR_PTR(error);
280
281
282
283
284
285 return NULL;
286 }
287
288
289 if (!ci_name.name)
290 return d_splice_alias(VFS_I(ip), dentry);
291
292
293 dname.name = ci_name.name;
294 dname.len = ci_name.len;
295 dentry = d_add_ci(dentry, VFS_I(ip), &dname);
296 kmem_free(ci_name.name);
297 return dentry;
298}
299
300STATIC int
301xfs_vn_link(
302 struct dentry *old_dentry,
303 struct inode *dir,
304 struct dentry *dentry)
305{
306 struct inode *inode = d_inode(old_dentry);
307 struct xfs_name name;
308 int error;
309
310 xfs_dentry_to_name(&name, dentry, inode->i_mode);
311
312 error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
313 if (unlikely(error))
314 return error;
315
316 ihold(inode);
317 d_instantiate(dentry, inode);
318 return 0;
319}
320
321STATIC int
322xfs_vn_unlink(
323 struct inode *dir,
324 struct dentry *dentry)
325{
326 struct xfs_name name;
327 int error;
328
329 xfs_dentry_to_name(&name, dentry, 0);
330
331 error = xfs_remove(XFS_I(dir), &name, XFS_I(d_inode(dentry)));
332 if (error)
333 return error;
334
335
336
337
338
339
340 if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
341 d_invalidate(dentry);
342 return 0;
343}
344
345STATIC int
346xfs_vn_symlink(
347 struct inode *dir,
348 struct dentry *dentry,
349 const char *symname)
350{
351 struct inode *inode;
352 struct xfs_inode *cip = NULL;
353 struct xfs_name name;
354 int error;
355 umode_t mode;
356
357 mode = S_IFLNK |
358 (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
359 xfs_dentry_to_name(&name, dentry, mode);
360
361 error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip);
362 if (unlikely(error))
363 goto out;
364
365 inode = VFS_I(cip);
366
367 error = xfs_init_security(inode, dir, &dentry->d_name);
368 if (unlikely(error))
369 goto out_cleanup_inode;
370
371 d_instantiate(dentry, inode);
372 xfs_finish_inode_setup(cip);
373 return 0;
374
375 out_cleanup_inode:
376 xfs_finish_inode_setup(cip);
377 xfs_cleanup_inode(dir, inode, dentry);
378 iput(inode);
379 out:
380 return error;
381}
382
383STATIC int
384xfs_vn_rename(
385 struct inode *odir,
386 struct dentry *odentry,
387 struct inode *ndir,
388 struct dentry *ndentry,
389 unsigned int flags)
390{
391 struct inode *new_inode = d_inode(ndentry);
392 int omode = 0;
393 struct xfs_name oname;
394 struct xfs_name nname;
395
396 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
397 return -EINVAL;
398
399
400 if (flags & RENAME_EXCHANGE)
401 omode = d_inode(ndentry)->i_mode;
402
403 xfs_dentry_to_name(&oname, odentry, omode);
404 xfs_dentry_to_name(&nname, ndentry, d_inode(odentry)->i_mode);
405
406 return xfs_rename(XFS_I(odir), &oname, XFS_I(d_inode(odentry)),
407 XFS_I(ndir), &nname,
408 new_inode ? XFS_I(new_inode) : NULL, flags);
409}
410
411
412
413
414
415
416STATIC const char *
417xfs_vn_get_link(
418 struct dentry *dentry,
419 struct inode *inode,
420 struct delayed_call *done)
421{
422 char *link;
423 int error = -ENOMEM;
424
425 if (!dentry)
426 return ERR_PTR(-ECHILD);
427
428 link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
429 if (!link)
430 goto out_err;
431
432 error = xfs_readlink(XFS_I(d_inode(dentry)), link);
433 if (unlikely(error))
434 goto out_kfree;
435
436 set_delayed_call(done, kfree_link, link);
437 return link;
438
439 out_kfree:
440 kfree(link);
441 out_err:
442 return ERR_PTR(error);
443}
444
445STATIC int
446xfs_vn_getattr(
447 struct vfsmount *mnt,
448 struct dentry *dentry,
449 struct kstat *stat)
450{
451 struct inode *inode = d_inode(dentry);
452 struct xfs_inode *ip = XFS_I(inode);
453 struct xfs_mount *mp = ip->i_mount;
454
455 trace_xfs_getattr(ip);
456
457 if (XFS_FORCED_SHUTDOWN(mp))
458 return -EIO;
459
460 stat->size = XFS_ISIZE(ip);
461 stat->dev = inode->i_sb->s_dev;
462 stat->mode = inode->i_mode;
463 stat->nlink = inode->i_nlink;
464 stat->uid = inode->i_uid;
465 stat->gid = inode->i_gid;
466 stat->ino = ip->i_ino;
467 stat->atime = inode->i_atime;
468 stat->mtime = inode->i_mtime;
469 stat->ctime = inode->i_ctime;
470 stat->blocks =
471 XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
472
473
474 switch (inode->i_mode & S_IFMT) {
475 case S_IFBLK:
476 case S_IFCHR:
477 stat->blksize = BLKDEV_IOSIZE;
478 stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
479 sysv_minor(ip->i_df.if_u2.if_rdev));
480 break;
481 default:
482 if (XFS_IS_REALTIME_INODE(ip)) {
483
484
485
486
487
488 stat->blksize =
489 xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
490 } else
491 stat->blksize = xfs_preferred_iosize(mp);
492 stat->rdev = 0;
493 break;
494 }
495
496 return 0;
497}
498
499static void
500xfs_setattr_mode(
501 struct xfs_inode *ip,
502 struct iattr *iattr)
503{
504 struct inode *inode = VFS_I(ip);
505 umode_t mode = iattr->ia_mode;
506
507 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
508
509 inode->i_mode &= S_IFMT;
510 inode->i_mode |= mode & ~S_IFMT;
511}
512
513void
514xfs_setattr_time(
515 struct xfs_inode *ip,
516 struct iattr *iattr)
517{
518 struct inode *inode = VFS_I(ip);
519
520 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
521
522 if (iattr->ia_valid & ATTR_ATIME)
523 inode->i_atime = iattr->ia_atime;
524 if (iattr->ia_valid & ATTR_CTIME)
525 inode->i_ctime = iattr->ia_ctime;
526 if (iattr->ia_valid & ATTR_MTIME)
527 inode->i_mtime = iattr->ia_mtime;
528}
529
530int
531xfs_setattr_nonsize(
532 struct xfs_inode *ip,
533 struct iattr *iattr,
534 int flags)
535{
536 xfs_mount_t *mp = ip->i_mount;
537 struct inode *inode = VFS_I(ip);
538 int mask = iattr->ia_valid;
539 xfs_trans_t *tp;
540 int error;
541 kuid_t uid = GLOBAL_ROOT_UID, iuid = GLOBAL_ROOT_UID;
542 kgid_t gid = GLOBAL_ROOT_GID, igid = GLOBAL_ROOT_GID;
543 struct xfs_dquot *udqp = NULL, *gdqp = NULL;
544 struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL;
545
546 trace_xfs_setattr(ip);
547
548
549 if (!(flags & XFS_ATTR_NOACL)) {
550 if (mp->m_flags & XFS_MOUNT_RDONLY)
551 return -EROFS;
552
553 if (XFS_FORCED_SHUTDOWN(mp))
554 return -EIO;
555
556 error = inode_change_ok(inode, iattr);
557 if (error)
558 return error;
559 }
560
561 ASSERT((mask & ATTR_SIZE) == 0);
562
563
564
565
566
567
568
569
570
571 if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) {
572 uint qflags = 0;
573
574 if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) {
575 uid = iattr->ia_uid;
576 qflags |= XFS_QMOPT_UQUOTA;
577 } else {
578 uid = inode->i_uid;
579 }
580 if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) {
581 gid = iattr->ia_gid;
582 qflags |= XFS_QMOPT_GQUOTA;
583 } else {
584 gid = inode->i_gid;
585 }
586
587
588
589
590
591
592 ASSERT(udqp == NULL);
593 ASSERT(gdqp == NULL);
594 error = xfs_qm_vop_dqalloc(ip, xfs_kuid_to_uid(uid),
595 xfs_kgid_to_gid(gid),
596 xfs_get_projid(ip),
597 qflags, &udqp, &gdqp, NULL);
598 if (error)
599 return error;
600 }
601
602 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
603 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0);
604 if (error)
605 goto out_trans_cancel;
606
607 xfs_ilock(ip, XFS_ILOCK_EXCL);
608
609
610
611
612 if (mask & (ATTR_UID|ATTR_GID)) {
613
614
615
616
617
618
619 iuid = inode->i_uid;
620 igid = inode->i_gid;
621 gid = (mask & ATTR_GID) ? iattr->ia_gid : igid;
622 uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid;
623
624
625
626
627
628 if (XFS_IS_QUOTA_RUNNING(mp) &&
629 ((XFS_IS_UQUOTA_ON(mp) && !uid_eq(iuid, uid)) ||
630 (XFS_IS_GQUOTA_ON(mp) && !gid_eq(igid, gid)))) {
631 ASSERT(tp);
632 error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp,
633 NULL, capable(CAP_FOWNER) ?
634 XFS_QMOPT_FORCE_RES : 0);
635 if (error)
636 goto out_unlock;
637 }
638 }
639
640 xfs_trans_ijoin(tp, ip, 0);
641
642
643
644
645 if (mask & (ATTR_UID|ATTR_GID)) {
646
647
648
649
650
651
652 if ((inode->i_mode & (S_ISUID|S_ISGID)) &&
653 !capable(CAP_FSETID))
654 inode->i_mode &= ~(S_ISUID|S_ISGID);
655
656
657
658
659
660 if (!uid_eq(iuid, uid)) {
661 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) {
662 ASSERT(mask & ATTR_UID);
663 ASSERT(udqp);
664 olddquot1 = xfs_qm_vop_chown(tp, ip,
665 &ip->i_udquot, udqp);
666 }
667 ip->i_d.di_uid = xfs_kuid_to_uid(uid);
668 inode->i_uid = uid;
669 }
670 if (!gid_eq(igid, gid)) {
671 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) {
672 ASSERT(xfs_sb_version_has_pquotino(&mp->m_sb) ||
673 !XFS_IS_PQUOTA_ON(mp));
674 ASSERT(mask & ATTR_GID);
675 ASSERT(gdqp);
676 olddquot2 = xfs_qm_vop_chown(tp, ip,
677 &ip->i_gdquot, gdqp);
678 }
679 ip->i_d.di_gid = xfs_kgid_to_gid(gid);
680 inode->i_gid = gid;
681 }
682 }
683
684 if (mask & ATTR_MODE)
685 xfs_setattr_mode(ip, iattr);
686 if (mask & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME))
687 xfs_setattr_time(ip, iattr);
688
689 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
690
691 XFS_STATS_INC(mp, xs_ig_attrchg);
692
693 if (mp->m_flags & XFS_MOUNT_WSYNC)
694 xfs_trans_set_sync(tp);
695 error = xfs_trans_commit(tp);
696
697 xfs_iunlock(ip, XFS_ILOCK_EXCL);
698
699
700
701
702 xfs_qm_dqrele(olddquot1);
703 xfs_qm_dqrele(olddquot2);
704 xfs_qm_dqrele(udqp);
705 xfs_qm_dqrele(gdqp);
706
707 if (error)
708 return error;
709
710
711
712
713
714
715
716
717 if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) {
718 error = posix_acl_chmod(inode, inode->i_mode);
719 if (error)
720 return error;
721 }
722
723 return 0;
724
725out_unlock:
726 xfs_iunlock(ip, XFS_ILOCK_EXCL);
727out_trans_cancel:
728 xfs_trans_cancel(tp);
729 xfs_qm_dqrele(udqp);
730 xfs_qm_dqrele(gdqp);
731 return error;
732}
733
734
735
736
737int
738xfs_setattr_size(
739 struct xfs_inode *ip,
740 struct iattr *iattr)
741{
742 struct xfs_mount *mp = ip->i_mount;
743 struct inode *inode = VFS_I(ip);
744 xfs_off_t oldsize, newsize;
745 struct xfs_trans *tp;
746 int error;
747 uint lock_flags = 0;
748 bool did_zeroing = false;
749
750 trace_xfs_setattr(ip);
751
752 if (mp->m_flags & XFS_MOUNT_RDONLY)
753 return -EROFS;
754
755 if (XFS_FORCED_SHUTDOWN(mp))
756 return -EIO;
757
758 error = inode_change_ok(inode, iattr);
759 if (error)
760 return error;
761
762 ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
763 ASSERT(xfs_isilocked(ip, XFS_MMAPLOCK_EXCL));
764 ASSERT(S_ISREG(inode->i_mode));
765 ASSERT((iattr->ia_valid & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
766 ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
767
768 oldsize = inode->i_size;
769 newsize = iattr->ia_size;
770
771
772
773
774 if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) {
775 if (!(iattr->ia_valid & (ATTR_CTIME|ATTR_MTIME)))
776 return 0;
777
778
779
780
781 iattr->ia_valid &= ~ATTR_SIZE;
782 return xfs_setattr_nonsize(ip, iattr, 0);
783 }
784
785
786
787
788 error = xfs_qm_dqattach(ip, 0);
789 if (error)
790 return error;
791
792
793
794
795
796
797
798
799
800
801 if (newsize > oldsize) {
802 error = xfs_zero_eof(ip, newsize, oldsize, &did_zeroing);
803 if (error)
804 return error;
805 }
806
807
808
809
810
811
812
813
814
815 if (newsize > ip->i_d.di_size &&
816 (oldsize != ip->i_d.di_size || did_zeroing)) {
817 error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
818 ip->i_d.di_size, newsize);
819 if (error)
820 return error;
821 }
822
823
824 inode_dio_wait(inode);
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843 if (IS_DAX(inode))
844 error = dax_truncate_page(inode, newsize, xfs_get_blocks_direct);
845 else
846 error = block_truncate_page(inode->i_mapping, newsize,
847 xfs_get_blocks);
848 if (error)
849 return error;
850 truncate_setsize(inode, newsize);
851
852 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE);
853 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0);
854 if (error)
855 goto out_trans_cancel;
856
857 lock_flags |= XFS_ILOCK_EXCL;
858 xfs_ilock(ip, XFS_ILOCK_EXCL);
859 xfs_trans_ijoin(tp, ip, 0);
860
861
862
863
864
865
866
867
868
869
870
871 if (newsize != oldsize &&
872 !(iattr->ia_valid & (ATTR_CTIME | ATTR_MTIME))) {
873 iattr->ia_ctime = iattr->ia_mtime =
874 current_fs_time(inode->i_sb);
875 iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME;
876 }
877
878
879
880
881
882
883
884
885
886
887
888
889
890 ip->i_d.di_size = newsize;
891 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
892
893 if (newsize <= oldsize) {
894 error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, newsize);
895 if (error)
896 goto out_trans_cancel;
897
898
899
900
901
902
903
904
905 xfs_iflags_set(ip, XFS_ITRUNCATED);
906
907
908 xfs_inode_clear_eofblocks_tag(ip);
909 }
910
911 if (iattr->ia_valid & ATTR_MODE)
912 xfs_setattr_mode(ip, iattr);
913 if (iattr->ia_valid & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME))
914 xfs_setattr_time(ip, iattr);
915
916 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
917
918 XFS_STATS_INC(mp, xs_ig_attrchg);
919
920 if (mp->m_flags & XFS_MOUNT_WSYNC)
921 xfs_trans_set_sync(tp);
922
923 error = xfs_trans_commit(tp);
924out_unlock:
925 if (lock_flags)
926 xfs_iunlock(ip, lock_flags);
927 return error;
928
929out_trans_cancel:
930 xfs_trans_cancel(tp);
931 goto out_unlock;
932}
933
934STATIC int
935xfs_vn_setattr(
936 struct dentry *dentry,
937 struct iattr *iattr)
938{
939 struct xfs_inode *ip = XFS_I(d_inode(dentry));
940 int error;
941
942 if (iattr->ia_valid & ATTR_SIZE) {
943 uint iolock = XFS_IOLOCK_EXCL;
944
945 xfs_ilock(ip, iolock);
946 error = xfs_break_layouts(d_inode(dentry), &iolock, true);
947 if (!error) {
948 xfs_ilock(ip, XFS_MMAPLOCK_EXCL);
949 iolock |= XFS_MMAPLOCK_EXCL;
950
951 error = xfs_setattr_size(ip, iattr);
952 }
953 xfs_iunlock(ip, iolock);
954 } else {
955 error = xfs_setattr_nonsize(ip, iattr, 0);
956 }
957
958 return error;
959}
960
961STATIC int
962xfs_vn_update_time(
963 struct inode *inode,
964 struct timespec *now,
965 int flags)
966{
967 struct xfs_inode *ip = XFS_I(inode);
968 struct xfs_mount *mp = ip->i_mount;
969 struct xfs_trans *tp;
970 int error;
971
972 trace_xfs_update_time(ip);
973
974 tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
975 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0);
976 if (error) {
977 xfs_trans_cancel(tp);
978 return error;
979 }
980
981 xfs_ilock(ip, XFS_ILOCK_EXCL);
982 if (flags & S_CTIME)
983 inode->i_ctime = *now;
984 if (flags & S_MTIME)
985 inode->i_mtime = *now;
986 if (flags & S_ATIME)
987 inode->i_atime = *now;
988
989 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
990 xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP);
991 return xfs_trans_commit(tp);
992}
993
994#define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
995
996
997
998
999
1000STATIC int
1001xfs_fiemap_format(
1002 void **arg,
1003 struct getbmapx *bmv,
1004 int *full)
1005{
1006 int error;
1007 struct fiemap_extent_info *fieinfo = *arg;
1008 u32 fiemap_flags = 0;
1009 u64 logical, physical, length;
1010
1011
1012 if (bmv->bmv_block == -1LL)
1013 return 0;
1014
1015 logical = BBTOB(bmv->bmv_offset);
1016 physical = BBTOB(bmv->bmv_block);
1017 length = BBTOB(bmv->bmv_length);
1018
1019 if (bmv->bmv_oflags & BMV_OF_PREALLOC)
1020 fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
1021 else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
1022 fiemap_flags |= (FIEMAP_EXTENT_DELALLOC |
1023 FIEMAP_EXTENT_UNKNOWN);
1024 physical = 0;
1025 }
1026 if (bmv->bmv_oflags & BMV_OF_LAST)
1027 fiemap_flags |= FIEMAP_EXTENT_LAST;
1028
1029 error = fiemap_fill_next_extent(fieinfo, logical, physical,
1030 length, fiemap_flags);
1031 if (error > 0) {
1032 error = 0;
1033 *full = 1;
1034 }
1035
1036 return error;
1037}
1038
1039STATIC int
1040xfs_vn_fiemap(
1041 struct inode *inode,
1042 struct fiemap_extent_info *fieinfo,
1043 u64 start,
1044 u64 length)
1045{
1046 xfs_inode_t *ip = XFS_I(inode);
1047 struct getbmapx bm;
1048 int error;
1049
1050 error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS);
1051 if (error)
1052 return error;
1053
1054
1055 bm.bmv_offset = BTOBBT(start);
1056
1057 if (length == FIEMAP_MAX_OFFSET)
1058 bm.bmv_length = -1LL;
1059 else
1060 bm.bmv_length = BTOBB(start + length) - bm.bmv_offset;
1061
1062
1063 bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM :
1064 fieinfo->fi_extents_max + 1;
1065 bm.bmv_count = min_t(__s32, bm.bmv_count,
1066 (PAGE_SIZE * 16 / sizeof(struct getbmapx)));
1067 bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES;
1068 if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
1069 bm.bmv_iflags |= BMV_IF_ATTRFORK;
1070 if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC))
1071 bm.bmv_iflags |= BMV_IF_DELALLOC;
1072
1073 error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo);
1074 if (error)
1075 return error;
1076
1077 return 0;
1078}
1079
1080STATIC int
1081xfs_vn_tmpfile(
1082 struct inode *dir,
1083 struct dentry *dentry,
1084 umode_t mode)
1085{
1086 return xfs_generic_create(dir, dentry, mode, 0, true);
1087}
1088
1089static const struct inode_operations xfs_inode_operations = {
1090 .get_acl = xfs_get_acl,
1091 .set_acl = xfs_set_acl,
1092 .getattr = xfs_vn_getattr,
1093 .setattr = xfs_vn_setattr,
1094 .setxattr = generic_setxattr,
1095 .getxattr = generic_getxattr,
1096 .removexattr = generic_removexattr,
1097 .listxattr = xfs_vn_listxattr,
1098 .fiemap = xfs_vn_fiemap,
1099 .update_time = xfs_vn_update_time,
1100};
1101
1102static const struct inode_operations xfs_dir_inode_operations = {
1103 .create = xfs_vn_create,
1104 .lookup = xfs_vn_lookup,
1105 .link = xfs_vn_link,
1106 .unlink = xfs_vn_unlink,
1107 .symlink = xfs_vn_symlink,
1108 .mkdir = xfs_vn_mkdir,
1109
1110
1111
1112
1113
1114
1115 .rmdir = xfs_vn_unlink,
1116 .mknod = xfs_vn_mknod,
1117 .rename2 = xfs_vn_rename,
1118 .get_acl = xfs_get_acl,
1119 .set_acl = xfs_set_acl,
1120 .getattr = xfs_vn_getattr,
1121 .setattr = xfs_vn_setattr,
1122 .setxattr = generic_setxattr,
1123 .getxattr = generic_getxattr,
1124 .removexattr = generic_removexattr,
1125 .listxattr = xfs_vn_listxattr,
1126 .update_time = xfs_vn_update_time,
1127 .tmpfile = xfs_vn_tmpfile,
1128};
1129
1130static const struct inode_operations xfs_dir_ci_inode_operations = {
1131 .create = xfs_vn_create,
1132 .lookup = xfs_vn_ci_lookup,
1133 .link = xfs_vn_link,
1134 .unlink = xfs_vn_unlink,
1135 .symlink = xfs_vn_symlink,
1136 .mkdir = xfs_vn_mkdir,
1137
1138
1139
1140
1141
1142
1143 .rmdir = xfs_vn_unlink,
1144 .mknod = xfs_vn_mknod,
1145 .rename2 = xfs_vn_rename,
1146 .get_acl = xfs_get_acl,
1147 .set_acl = xfs_set_acl,
1148 .getattr = xfs_vn_getattr,
1149 .setattr = xfs_vn_setattr,
1150 .setxattr = generic_setxattr,
1151 .getxattr = generic_getxattr,
1152 .removexattr = generic_removexattr,
1153 .listxattr = xfs_vn_listxattr,
1154 .update_time = xfs_vn_update_time,
1155 .tmpfile = xfs_vn_tmpfile,
1156};
1157
1158static const struct inode_operations xfs_symlink_inode_operations = {
1159 .readlink = generic_readlink,
1160 .get_link = xfs_vn_get_link,
1161 .getattr = xfs_vn_getattr,
1162 .setattr = xfs_vn_setattr,
1163 .setxattr = generic_setxattr,
1164 .getxattr = generic_getxattr,
1165 .removexattr = generic_removexattr,
1166 .listxattr = xfs_vn_listxattr,
1167 .update_time = xfs_vn_update_time,
1168};
1169
1170STATIC void
1171xfs_diflags_to_iflags(
1172 struct inode *inode,
1173 struct xfs_inode *ip)
1174{
1175 uint16_t flags = ip->i_d.di_flags;
1176
1177 inode->i_flags &= ~(S_IMMUTABLE | S_APPEND | S_SYNC |
1178 S_NOATIME | S_DAX);
1179
1180 if (flags & XFS_DIFLAG_IMMUTABLE)
1181 inode->i_flags |= S_IMMUTABLE;
1182 if (flags & XFS_DIFLAG_APPEND)
1183 inode->i_flags |= S_APPEND;
1184 if (flags & XFS_DIFLAG_SYNC)
1185 inode->i_flags |= S_SYNC;
1186 if (flags & XFS_DIFLAG_NOATIME)
1187 inode->i_flags |= S_NOATIME;
1188 if (S_ISREG(inode->i_mode) &&
1189 ip->i_mount->m_sb.sb_blocksize == PAGE_SIZE &&
1190 (ip->i_mount->m_flags & XFS_MOUNT_DAX ||
1191 ip->i_d.di_flags2 & XFS_DIFLAG2_DAX))
1192 inode->i_flags |= S_DAX;
1193}
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203void
1204xfs_setup_inode(
1205 struct xfs_inode *ip)
1206{
1207 struct inode *inode = &ip->i_vnode;
1208 gfp_t gfp_mask;
1209
1210 inode->i_ino = ip->i_ino;
1211 inode->i_state = I_NEW;
1212
1213 inode_sb_list_add(inode);
1214
1215 hlist_add_fake(&inode->i_hash);
1216
1217 inode->i_uid = xfs_uid_to_kuid(ip->i_d.di_uid);
1218 inode->i_gid = xfs_gid_to_kgid(ip->i_d.di_gid);
1219
1220 switch (inode->i_mode & S_IFMT) {
1221 case S_IFBLK:
1222 case S_IFCHR:
1223 inode->i_rdev =
1224 MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
1225 sysv_minor(ip->i_df.if_u2.if_rdev));
1226 break;
1227 default:
1228 inode->i_rdev = 0;
1229 break;
1230 }
1231
1232 i_size_write(inode, ip->i_d.di_size);
1233 xfs_diflags_to_iflags(inode, ip);
1234
1235 ip->d_ops = ip->i_mount->m_nondir_inode_ops;
1236 lockdep_set_class(&ip->i_lock.mr_lock, &xfs_nondir_ilock_class);
1237 switch (inode->i_mode & S_IFMT) {
1238 case S_IFREG:
1239 inode->i_op = &xfs_inode_operations;
1240 inode->i_fop = &xfs_file_operations;
1241 inode->i_mapping->a_ops = &xfs_address_space_operations;
1242 break;
1243 case S_IFDIR:
1244 lockdep_set_class(&ip->i_lock.mr_lock, &xfs_dir_ilock_class);
1245 if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
1246 inode->i_op = &xfs_dir_ci_inode_operations;
1247 else
1248 inode->i_op = &xfs_dir_inode_operations;
1249 inode->i_fop = &xfs_dir_file_operations;
1250 ip->d_ops = ip->i_mount->m_dir_inode_ops;
1251 break;
1252 case S_IFLNK:
1253 inode->i_op = &xfs_symlink_inode_operations;
1254 if (!(ip->i_df.if_flags & XFS_IFINLINE))
1255 inode->i_mapping->a_ops = &xfs_address_space_operations;
1256 break;
1257 default:
1258 inode->i_op = &xfs_inode_operations;
1259 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1260 break;
1261 }
1262
1263
1264
1265
1266
1267
1268 gfp_mask = mapping_gfp_mask(inode->i_mapping);
1269 mapping_set_gfp_mask(inode->i_mapping, (gfp_mask & ~(__GFP_FS)));
1270
1271
1272
1273
1274
1275 if (!XFS_IFORK_Q(ip)) {
1276 inode_has_no_xattr(inode);
1277 cache_no_acl(inode);
1278 }
1279}
1280