1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34#include <linux/fs.h>
35#include <linux/sched.h>
36#include <linux/mm.h>
37#include <linux/quotaops.h>
38#include <linux/highmem.h>
39#include <linux/pagemap.h>
40#include <linux/security.h>
41
42#define DEBUG_SUBSYSTEM S_LLITE
43
44#include <obd_support.h>
45#include <lustre_fid.h>
46#include <lustre_dlm.h>
47#include "llite_internal.h"
48
49static int ll_create_it(struct inode *dir, struct dentry *dentry,
50 struct lookup_intent *it);
51
52
53static int ll_test_inode(struct inode *inode, void *opaque)
54{
55 struct ll_inode_info *lli = ll_i2info(inode);
56 struct lustre_md *md = opaque;
57
58 if (unlikely(!(md->body->mbo_valid & OBD_MD_FLID))) {
59 CERROR("MDS body missing FID\n");
60 return 0;
61 }
62
63 if (!lu_fid_eq(&lli->lli_fid, &md->body->mbo_fid1))
64 return 0;
65
66 return 1;
67}
68
69static int ll_set_inode(struct inode *inode, void *opaque)
70{
71 struct ll_inode_info *lli = ll_i2info(inode);
72 struct mdt_body *body = ((struct lustre_md *)opaque)->body;
73
74 if (unlikely(!(body->mbo_valid & OBD_MD_FLID))) {
75 CERROR("MDS body missing FID\n");
76 return -EINVAL;
77 }
78
79 lli->lli_fid = body->mbo_fid1;
80 if (unlikely(!(body->mbo_valid & OBD_MD_FLTYPE))) {
81 CERROR("Can not initialize inode " DFID
82 " without object type: valid = %#llx\n",
83 PFID(&lli->lli_fid), body->mbo_valid);
84 return -EINVAL;
85 }
86
87 inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mbo_mode & S_IFMT);
88 if (unlikely(inode->i_mode == 0)) {
89 CERROR("Invalid inode " DFID " type\n", PFID(&lli->lli_fid));
90 return -EINVAL;
91 }
92
93 ll_lli_init(lli);
94
95 return 0;
96}
97
98
99
100
101
102struct inode *ll_iget(struct super_block *sb, ino_t hash,
103 struct lustre_md *md)
104{
105 struct inode *inode;
106 int rc = 0;
107
108 LASSERT(hash != 0);
109 inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
110 if (!inode)
111 return ERR_PTR(-ENOMEM);
112
113 if (inode->i_state & I_NEW) {
114 rc = ll_read_inode2(inode, md);
115 if (!rc && S_ISREG(inode->i_mode) &&
116 !ll_i2info(inode)->lli_clob)
117 rc = cl_file_inode_init(inode, md);
118
119 if (rc) {
120
121
122
123
124
125
126 if (S_ISDIR(inode->i_mode))
127 ll_dir_clear_lsm_md(inode);
128 make_bad_inode(inode);
129 unlock_new_inode(inode);
130 iput(inode);
131 inode = ERR_PTR(rc);
132 } else {
133 unlock_new_inode(inode);
134 }
135 } else if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
136 rc = ll_update_inode(inode, md);
137 CDEBUG(D_VFSTRACE, "got inode: " DFID "(%p): rc = %d\n",
138 PFID(&md->body->mbo_fid1), inode, rc);
139 if (rc) {
140 if (S_ISDIR(inode->i_mode))
141 ll_dir_clear_lsm_md(inode);
142 iput(inode);
143 inode = ERR_PTR(rc);
144 }
145 }
146 return inode;
147}
148
149static void ll_invalidate_negative_children(struct inode *dir)
150{
151 struct dentry *dentry, *tmp_subdir;
152
153 spin_lock(&dir->i_lock);
154 hlist_for_each_entry(dentry, &dir->i_dentry, d_u.d_alias) {
155 spin_lock(&dentry->d_lock);
156 if (!list_empty(&dentry->d_subdirs)) {
157 struct dentry *child;
158
159 list_for_each_entry_safe(child, tmp_subdir,
160 &dentry->d_subdirs,
161 d_child) {
162 if (d_really_is_negative(child))
163 d_lustre_invalidate(child, 1);
164 }
165 }
166 spin_unlock(&dentry->d_lock);
167 }
168 spin_unlock(&dir->i_lock);
169}
170
171int ll_test_inode_by_fid(struct inode *inode, void *opaque)
172{
173 return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
174}
175
176int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
177 void *data, int flag)
178{
179 struct lustre_handle lockh;
180 int rc;
181
182 switch (flag) {
183 case LDLM_CB_BLOCKING:
184 ldlm_lock2handle(lock, &lockh);
185 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
186 if (rc < 0) {
187 CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
188 return rc;
189 }
190 break;
191 case LDLM_CB_CANCELING: {
192 struct inode *inode = ll_inode_from_resource_lock(lock);
193 __u64 bits = lock->l_policy_data.l_inodebits.bits;
194
195
196
197
198 LASSERT(!lock->l_ast_data);
199
200 if (!inode)
201 break;
202
203
204 LASSERT(ldlm_is_canceling(lock));
205
206 if (!fid_res_name_eq(ll_inode2fid(inode),
207 &lock->l_resource->lr_name)) {
208 LDLM_ERROR(lock,
209 "data mismatch with object " DFID "(%p)",
210 PFID(ll_inode2fid(inode)), inode);
211 LBUG();
212 }
213
214 if (bits & MDS_INODELOCK_XATTR) {
215 if (S_ISDIR(inode->i_mode))
216 ll_i2info(inode)->lli_def_stripe_offset = -1;
217 ll_xattr_cache_destroy(inode);
218 bits &= ~MDS_INODELOCK_XATTR;
219 }
220
221
222
223
224 if (bits & MDS_INODELOCK_OPEN)
225 ll_have_md_lock(inode, &bits, lock->l_req_mode);
226
227 if (bits & MDS_INODELOCK_OPEN) {
228 fmode_t fmode;
229
230 switch (lock->l_req_mode) {
231 case LCK_CW:
232 fmode = FMODE_WRITE;
233 break;
234 case LCK_PR:
235 fmode = FMODE_EXEC;
236 break;
237 case LCK_CR:
238 fmode = FMODE_READ;
239 break;
240 default:
241 LDLM_ERROR(lock, "bad lock mode for OPEN lock");
242 LBUG();
243 }
244
245 ll_md_real_close(inode, fmode);
246 }
247
248 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
249 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM))
250 ll_have_md_lock(inode, &bits, LCK_MINMODE);
251
252 if (bits & MDS_INODELOCK_LAYOUT) {
253 struct cl_object_conf conf = {
254 .coc_opc = OBJECT_CONF_INVALIDATE,
255 .coc_inode = inode,
256 };
257
258 rc = ll_layout_conf(inode, &conf);
259 if (rc < 0)
260 CDEBUG(D_INODE, "cannot invalidate layout of "
261 DFID ": rc = %d\n",
262 PFID(ll_inode2fid(inode)), rc);
263 }
264
265 if (bits & MDS_INODELOCK_UPDATE) {
266 struct ll_inode_info *lli = ll_i2info(inode);
267
268 spin_lock(&lli->lli_lock);
269 LTIME_S(inode->i_mtime) = 0;
270 LTIME_S(inode->i_atime) = 0;
271 LTIME_S(inode->i_ctime) = 0;
272 spin_unlock(&lli->lli_lock);
273 }
274
275 if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
276 struct ll_inode_info *lli = ll_i2info(inode);
277
278 CDEBUG(D_INODE, "invalidating inode " DFID " lli = %p, pfid = " DFID "\n",
279 PFID(ll_inode2fid(inode)), lli,
280 PFID(&lli->lli_pfid));
281
282 truncate_inode_pages(inode->i_mapping, 0);
283
284 if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
285 struct inode *master_inode = NULL;
286 unsigned long hash;
287
288
289
290
291
292
293
294 CDEBUG(D_INODE,
295 "Invalidate s" DFID " m" DFID "\n",
296 PFID(ll_inode2fid(inode)),
297 PFID(&lli->lli_pfid));
298
299 hash = cl_fid_build_ino(&lli->lli_pfid,
300 ll_need_32bit_api(ll_i2sbi(inode)));
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329 master_inode = ilookup5_nowait(inode->i_sb,
330 hash,
331 ll_test_inode_by_fid,
332 (void *)&lli->lli_pfid);
333 if (master_inode) {
334 ll_invalidate_negative_children(master_inode);
335 iput(master_inode);
336 }
337 } else {
338 ll_invalidate_negative_children(inode);
339 }
340 }
341
342 if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
343 inode->i_sb->s_root &&
344 !is_root_inode(inode))
345 ll_invalidate_aliases(inode);
346
347 iput(inode);
348 break;
349 }
350 default:
351 LBUG();
352 }
353
354 return 0;
355}
356
357__u32 ll_i2suppgid(struct inode *i)
358{
359 if (in_group_p(i->i_gid))
360 return (__u32)from_kgid(&init_user_ns, i->i_gid);
361 else
362 return (__u32)(-1);
363}
364
365
366
367
368
369
370void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
371{
372 LASSERT(i1);
373
374 suppgids[0] = ll_i2suppgid(i1);
375
376 if (i2)
377 suppgids[1] = ll_i2suppgid(i2);
378 else
379 suppgids[1] = -1;
380}
381
382
383
384
385
386
387
388
389
390static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
391{
392 struct dentry *alias, *discon_alias, *invalid_alias;
393
394 if (hlist_empty(&inode->i_dentry))
395 return NULL;
396
397 discon_alias = NULL;
398 invalid_alias = NULL;
399
400 spin_lock(&inode->i_lock);
401 hlist_for_each_entry(alias, &inode->i_dentry, d_u.d_alias) {
402 LASSERT(alias != dentry);
403
404 spin_lock(&alias->d_lock);
405 if ((alias->d_flags & DCACHE_DISCONNECTED) &&
406 S_ISDIR(inode->i_mode))
407
408 discon_alias = alias;
409 else if (alias->d_parent == dentry->d_parent &&
410 alias->d_name.hash == dentry->d_name.hash &&
411 alias->d_name.len == dentry->d_name.len &&
412 memcmp(alias->d_name.name, dentry->d_name.name,
413 dentry->d_name.len) == 0)
414 invalid_alias = alias;
415 spin_unlock(&alias->d_lock);
416
417 if (invalid_alias)
418 break;
419 }
420 alias = invalid_alias ?: discon_alias ?: NULL;
421 if (alias) {
422 spin_lock(&alias->d_lock);
423 dget_dlock(alias);
424 spin_unlock(&alias->d_lock);
425 }
426 spin_unlock(&inode->i_lock);
427
428 return alias;
429}
430
431
432
433
434
435struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
436{
437 if (inode) {
438 struct dentry *new = ll_find_alias(inode, de);
439
440 if (new) {
441 d_move(new, de);
442 iput(inode);
443 CDEBUG(D_DENTRY,
444 "Reuse dentry %p inode %p refc %d flags %#x\n",
445 new, d_inode(new), d_count(new), new->d_flags);
446 return new;
447 }
448 }
449 d_add(de, inode);
450 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
451 de, d_inode(de), d_count(de), de->d_flags);
452 return de;
453}
454
455static int ll_lookup_it_finish(struct ptlrpc_request *request,
456 struct lookup_intent *it,
457 struct inode *parent, struct dentry **de)
458{
459 struct inode *inode = NULL;
460 __u64 bits = 0;
461 int rc = 0;
462 struct dentry *alias;
463
464
465
466
467 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
468 it->it_disposition);
469 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
470 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
471 if (rc)
472 return rc;
473
474 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
475
476
477
478
479
480
481
482
483
484
485 }
486
487 alias = ll_splice_alias(inode, *de);
488 if (IS_ERR(alias)) {
489 rc = PTR_ERR(alias);
490 goto out;
491 }
492 *de = alias;
493
494 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
495
496 if (bits & MDS_INODELOCK_LOOKUP)
497 d_lustre_revalidate(*de);
498 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
499
500
501
502
503
504 struct lookup_intent parent_it = {
505 .it_op = IT_GETATTR,
506 .it_lock_handle = 0 };
507 struct lu_fid fid = ll_i2info(parent)->lli_fid;
508
509
510 if (unlikely(ll_i2info(parent)->lli_lsm_md)) {
511 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
512 ll_i2info(parent)->lli_lsm_md,
513 (*de)->d_name.name,
514 (*de)->d_name.len, &fid);
515 if (rc)
516 return rc;
517 }
518
519 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
520 NULL)) {
521 d_lustre_revalidate(*de);
522 ll_intent_release(&parent_it);
523 }
524 }
525
526out:
527 if (rc != 0 && it->it_op & IT_OPEN)
528 ll_open_cleanup((*de)->d_sb, request);
529
530 return rc;
531}
532
533static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
534 struct lookup_intent *it)
535{
536 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
537 struct dentry *save = dentry, *retval;
538 struct ptlrpc_request *req = NULL;
539 struct md_op_data *op_data = NULL;
540 struct inode *inode;
541 __u32 opc;
542 int rc;
543
544 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
545 return ERR_PTR(-ENAMETOOLONG);
546
547 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir=" DFID "(%p),intent=%s\n",
548 dentry, PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
549
550 if (d_mountpoint(dentry))
551 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
552
553 if (!it || it->it_op == IT_GETXATTR)
554 it = &lookup_it;
555
556 if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
557 rc = ll_statahead(parent, &dentry, 0);
558 if (rc == 1) {
559 if (dentry == save)
560 retval = NULL;
561 else
562 retval = dentry;
563 goto out;
564 }
565 }
566
567 if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE && sb_rdonly(dentry->d_sb))
568 return ERR_PTR(-EROFS);
569
570 if (it->it_op & IT_CREAT)
571 opc = LUSTRE_OPC_CREATE;
572 else
573 opc = LUSTRE_OPC_ANY;
574
575 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
576 dentry->d_name.len, 0, opc, NULL);
577 if (IS_ERR(op_data))
578 return (void *)op_data;
579
580
581 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
582 it->it_create_mode &= ~current_umask();
583
584 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
585 &ll_md_blocking_ast, 0);
586
587
588
589
590
591
592
593 if (rc == -EACCES && it->it_op & IT_OPEN &&
594 it_disposition(it, DISP_OPEN_DENY)) {
595 struct mdt_body *body;
596
597 LASSERT(req);
598
599 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
600 if (op_data->op_suppgids[0] == body->mbo_gid ||
601 op_data->op_suppgids[1] == body->mbo_gid ||
602 !in_group_p(make_kgid(&init_user_ns, body->mbo_gid))) {
603 retval = ERR_PTR(-EACCES);
604 goto out;
605 }
606
607 fid_zero(&op_data->op_fid2);
608 op_data->op_suppgids[1] = body->mbo_gid;
609 ptlrpc_req_finished(req);
610 req = NULL;
611 ll_intent_release(it);
612 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
613 ll_md_blocking_ast, 0);
614 }
615
616 if (rc < 0) {
617 retval = ERR_PTR(rc);
618 goto out;
619 }
620
621 rc = ll_lookup_it_finish(req, it, parent, &dentry);
622 if (rc != 0) {
623 ll_intent_release(it);
624 retval = ERR_PTR(rc);
625 goto out;
626 }
627
628 inode = d_inode(dentry);
629 if ((it->it_op & IT_OPEN) && inode &&
630 !S_ISREG(inode->i_mode) &&
631 !S_ISDIR(inode->i_mode)) {
632 ll_release_openhandle(inode, it);
633 }
634 ll_lookup_finish_locks(it, inode);
635
636 if (dentry == save)
637 retval = NULL;
638 else
639 retval = dentry;
640out:
641 if (op_data && !IS_ERR(op_data))
642 ll_finish_md_op_data(op_data);
643
644 ptlrpc_req_finished(req);
645 return retval;
646}
647
648static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
649 unsigned int flags)
650{
651 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
652 struct dentry *de;
653
654 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir=" DFID "(%p),flags=%u\n",
655 dentry, PFID(ll_inode2fid(parent)), parent, flags);
656
657
658
659
660
661 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
662 (inode_permission(parent, MAY_WRITE | MAY_EXEC) == 0))
663 return NULL;
664
665 if (flags & (LOOKUP_PARENT | LOOKUP_OPEN | LOOKUP_CREATE))
666 itp = NULL;
667 else
668 itp = ⁢
669 de = ll_lookup_it(parent, dentry, itp);
670
671 if (itp)
672 ll_intent_release(itp);
673
674 return de;
675}
676
677
678
679
680
681static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
682 struct file *file, unsigned int open_flags,
683 umode_t mode, int *opened)
684{
685 struct lookup_intent *it;
686 struct dentry *de;
687 int rc = 0;
688
689 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir=" DFID "(%p),file %p,open_flags %x,mode %x opened %d\n",
690 dentry, PFID(ll_inode2fid(dir)), dir, file, open_flags, mode,
691 *opened);
692
693
694 LASSERT(!d_inode(dentry));
695
696 if (!d_in_lookup(dentry)) {
697
698
699
700
701
702 if (!(open_flags & O_CREAT))
703 return -ENOENT;
704
705
706
707
708 d_drop(dentry);
709 }
710
711 it = kzalloc(sizeof(*it), GFP_NOFS);
712 if (!it)
713 return -ENOMEM;
714
715 it->it_op = IT_OPEN;
716 if (open_flags & O_CREAT)
717 it->it_op |= IT_CREAT;
718 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
719 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
720 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
721
722
723 de = ll_lookup_it(dir, dentry, it);
724 if (IS_ERR(de))
725 rc = PTR_ERR(de);
726 else if (de)
727 dentry = de;
728
729 if (!rc) {
730 if (it_disposition(it, DISP_OPEN_CREATE)) {
731
732 rc = ll_create_it(dir, dentry, it);
733 if (rc) {
734
735 if (de)
736 dput(de);
737 goto out_release;
738 }
739
740 *opened |= FILE_CREATED;
741 }
742 if (d_really_is_positive(dentry) &&
743 it_disposition(it, DISP_OPEN_OPEN)) {
744
745 if (S_ISFIFO(d_inode(dentry)->i_mode)) {
746
747
748
749
750 rc = finish_no_open(file, de);
751 } else {
752 file->private_data = it;
753 rc = finish_open(file, dentry, NULL, opened);
754
755
756
757 if (de)
758 dput(de);
759 }
760 } else {
761 rc = finish_no_open(file, de);
762 }
763 }
764
765out_release:
766 ll_intent_release(it);
767 kfree(it);
768
769 return rc;
770}
771
772
773static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
774{
775 struct inode *inode = NULL;
776 struct ptlrpc_request *request = NULL;
777 struct ll_sb_info *sbi = ll_i2sbi(dir);
778 int rc;
779
780 LASSERT(it && it->it_disposition);
781
782 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
783 request = it->it_request;
784 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
785 rc = ll_prep_inode(&inode, request, dir->i_sb, it);
786 if (rc) {
787 inode = ERR_PTR(rc);
788 goto out;
789 }
790
791 LASSERT(hlist_empty(&inode->i_dentry));
792
793
794
795
796
797 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode " DFID "(%p)\n",
798 PFID(ll_inode2fid(dir)), inode);
799 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
800 out:
801 ptlrpc_req_finished(request);
802 return inode;
803}
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819static int ll_create_it(struct inode *dir, struct dentry *dentry,
820 struct lookup_intent *it)
821{
822 struct inode *inode;
823 int rc = 0;
824
825 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir=" DFID "(%p), intent=%s\n",
826 dentry, PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
827
828 rc = it_open_error(DISP_OPEN_CREATE, it);
829 if (rc)
830 return rc;
831
832 inode = ll_create_node(dir, it);
833 if (IS_ERR(inode))
834 return PTR_ERR(inode);
835
836 d_instantiate(dentry, inode);
837
838 return ll_init_security(dentry, inode, dir);
839}
840
841void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
842{
843 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
844 &RMF_MDT_BODY);
845
846 LASSERT(body);
847 if (body->mbo_valid & OBD_MD_FLMTIME &&
848 body->mbo_mtime > LTIME_S(inode->i_mtime)) {
849 CDEBUG(D_INODE, "setting fid " DFID " mtime from %lu to %llu\n",
850 PFID(ll_inode2fid(inode)), LTIME_S(inode->i_mtime),
851 body->mbo_mtime);
852 LTIME_S(inode->i_mtime) = body->mbo_mtime;
853 }
854 if (body->mbo_valid & OBD_MD_FLCTIME &&
855 body->mbo_ctime > LTIME_S(inode->i_ctime))
856 LTIME_S(inode->i_ctime) = body->mbo_ctime;
857}
858
859static int ll_new_node(struct inode *dir, struct dentry *dentry,
860 const char *tgt, umode_t mode, int rdev,
861 __u32 opc)
862{
863 struct ptlrpc_request *request = NULL;
864 struct md_op_data *op_data;
865 struct inode *inode = NULL;
866 struct ll_sb_info *sbi = ll_i2sbi(dir);
867 int tgt_len = 0;
868 int err;
869
870 if (unlikely(tgt))
871 tgt_len = strlen(tgt) + 1;
872again:
873 op_data = ll_prep_md_op_data(NULL, dir, NULL,
874 dentry->d_name.name,
875 dentry->d_name.len,
876 0, opc, NULL);
877 if (IS_ERR(op_data)) {
878 err = PTR_ERR(op_data);
879 goto err_exit;
880 }
881
882 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
883 from_kuid(&init_user_ns, current_fsuid()),
884 from_kgid(&init_user_ns, current_fsgid()),
885 cfs_curproc_cap_pack(), rdev, &request);
886 ll_finish_md_op_data(op_data);
887 if (err < 0 && err != -EREMOTE)
888 goto err_exit;
889
890
891
892
893
894
895
896 if (unlikely(err == -EREMOTE)) {
897 struct ll_inode_info *lli = ll_i2info(dir);
898 struct lmv_user_md *lum;
899 int lumsize, err2;
900
901 ptlrpc_req_finished(request);
902 request = NULL;
903
904 err2 = ll_dir_getstripe(dir, (void **)&lum, &lumsize, &request,
905 OBD_MD_DEFAULT_MEA);
906 if (!err2) {
907
908 lli->lli_def_stripe_offset = lum->lum_stripe_offset;
909 } else if (err2 == -ENODATA &&
910 lli->lli_def_stripe_offset != -1) {
911
912
913
914
915
916 lli->lli_def_stripe_offset = -1;
917 } else {
918 goto err_exit;
919 }
920
921 ptlrpc_req_finished(request);
922 request = NULL;
923 goto again;
924 }
925
926 ll_update_times(request, dir);
927
928 err = ll_prep_inode(&inode, request, dir->i_sb, NULL);
929 if (err)
930 goto err_exit;
931
932 d_instantiate(dentry, inode);
933
934 err = ll_init_security(dentry, inode, dir);
935err_exit:
936 if (request)
937 ptlrpc_req_finished(request);
938
939 return err;
940}
941
942static int ll_mknod(struct inode *dir, struct dentry *dchild,
943 umode_t mode, dev_t rdev)
944{
945 int err;
946
947 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir=" DFID "(%p) mode %o dev %x\n",
948 dchild, PFID(ll_inode2fid(dir)), dir, mode,
949 old_encode_dev(rdev));
950
951 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
952 mode &= ~current_umask();
953
954 switch (mode & S_IFMT) {
955 case 0:
956 mode |= S_IFREG;
957
958
959 case S_IFREG:
960 case S_IFCHR:
961 case S_IFBLK:
962 case S_IFIFO:
963 case S_IFSOCK:
964 err = ll_new_node(dir, dchild, NULL, mode,
965 old_encode_dev(rdev),
966 LUSTRE_OPC_MKNOD);
967 break;
968 case S_IFDIR:
969 err = -EPERM;
970 break;
971 default:
972 err = -EINVAL;
973 }
974
975 if (!err)
976 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD, 1);
977
978 return err;
979}
980
981
982
983
984static int ll_create_nd(struct inode *dir, struct dentry *dentry,
985 umode_t mode, bool want_excl)
986{
987 int rc;
988
989 CDEBUG(D_VFSTRACE,
990 "VFS Op:name=%pd, dir=" DFID "(%p), flags=%u, excl=%d\n",
991 dentry, PFID(ll_inode2fid(dir)), dir, mode, want_excl);
992
993 rc = ll_mknod(dir, dentry, mode, 0);
994
995 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
996
997 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, unhashed %d\n",
998 dentry, d_unhashed(dentry));
999
1000 return rc;
1001}
1002
1003static int ll_unlink(struct inode *dir, struct dentry *dchild)
1004{
1005 struct ptlrpc_request *request = NULL;
1006 struct md_op_data *op_data;
1007 int rc;
1008
1009 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd,dir=%lu/%u(%p)\n",
1010 dchild, dir->i_ino, dir->i_generation, dir);
1011
1012 op_data = ll_prep_md_op_data(NULL, dir, NULL,
1013 dchild->d_name.name,
1014 dchild->d_name.len,
1015 0, LUSTRE_OPC_ANY, NULL);
1016 if (IS_ERR(op_data))
1017 return PTR_ERR(op_data);
1018
1019 if (dchild->d_inode)
1020 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1021
1022 op_data->op_fid2 = op_data->op_fid3;
1023 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1024 ll_finish_md_op_data(op_data);
1025 if (rc)
1026 goto out;
1027
1028 ll_update_times(request, dir);
1029 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
1030
1031 out:
1032 ptlrpc_req_finished(request);
1033 return rc;
1034}
1035
1036static int ll_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
1037{
1038 int err;
1039
1040 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir" DFID "(%p)\n",
1041 dentry, PFID(ll_inode2fid(dir)), dir);
1042
1043 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1044 mode &= ~current_umask();
1045 mode = (mode & (0777 | S_ISVTX)) | S_IFDIR;
1046
1047 err = ll_new_node(dir, dentry, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1048 if (!err)
1049 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
1050
1051 return err;
1052}
1053
1054static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1055{
1056 struct ptlrpc_request *request = NULL;
1057 struct md_op_data *op_data;
1058 int rc;
1059
1060 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir=" DFID "(%p)\n",
1061 dchild, PFID(ll_inode2fid(dir)), dir);
1062
1063 op_data = ll_prep_md_op_data(NULL, dir, NULL,
1064 dchild->d_name.name,
1065 dchild->d_name.len,
1066 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1067 if (IS_ERR(op_data))
1068 return PTR_ERR(op_data);
1069
1070 if (dchild->d_inode)
1071 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1072
1073 op_data->op_fid2 = op_data->op_fid3;
1074 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1075 ll_finish_md_op_data(op_data);
1076 if (rc == 0) {
1077 ll_update_times(request, dir);
1078 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
1079 }
1080
1081 ptlrpc_req_finished(request);
1082 return rc;
1083}
1084
1085static int ll_symlink(struct inode *dir, struct dentry *dentry,
1086 const char *oldname)
1087{
1088 int err;
1089
1090 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir=" DFID "(%p),target=%.*s\n",
1091 dentry, PFID(ll_inode2fid(dir)), dir, 3000, oldname);
1092
1093 err = ll_new_node(dir, dentry, oldname, S_IFLNK | 0777,
1094 0, LUSTRE_OPC_SYMLINK);
1095
1096 if (!err)
1097 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
1098
1099 return err;
1100}
1101
1102static int ll_link(struct dentry *old_dentry, struct inode *dir,
1103 struct dentry *new_dentry)
1104{
1105 struct inode *src = d_inode(old_dentry);
1106 struct ll_sb_info *sbi = ll_i2sbi(dir);
1107 struct ptlrpc_request *request = NULL;
1108 struct md_op_data *op_data;
1109 int err;
1110
1111 CDEBUG(D_VFSTRACE,
1112 "VFS Op: inode=" DFID "(%p), dir=" DFID "(%p), target=%pd\n",
1113 PFID(ll_inode2fid(src)), src, PFID(ll_inode2fid(dir)), dir,
1114 new_dentry);
1115
1116 op_data = ll_prep_md_op_data(NULL, src, dir, new_dentry->d_name.name,
1117 new_dentry->d_name.len,
1118 0, LUSTRE_OPC_ANY, NULL);
1119 if (IS_ERR(op_data))
1120 return PTR_ERR(op_data);
1121
1122 err = md_link(sbi->ll_md_exp, op_data, &request);
1123 ll_finish_md_op_data(op_data);
1124 if (err)
1125 goto out;
1126
1127 ll_update_times(request, dir);
1128 ll_stats_ops_tally(sbi, LPROC_LL_LINK, 1);
1129out:
1130 ptlrpc_req_finished(request);
1131 return err;
1132}
1133
1134static int ll_rename(struct inode *src, struct dentry *src_dchild,
1135 struct inode *tgt, struct dentry *tgt_dchild,
1136 unsigned int flags)
1137{
1138 struct ptlrpc_request *request = NULL;
1139 struct ll_sb_info *sbi = ll_i2sbi(src);
1140 struct md_op_data *op_data;
1141 int err;
1142
1143 if (flags)
1144 return -EINVAL;
1145
1146 CDEBUG(D_VFSTRACE,
1147 "VFS Op:oldname=%pd, src_dir=" DFID "(%p), newname=%pd, tgt_dir=" DFID "(%p)\n",
1148 src_dchild, PFID(ll_inode2fid(src)), src,
1149 tgt_dchild, PFID(ll_inode2fid(tgt)), tgt);
1150
1151 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1152 LUSTRE_OPC_ANY, NULL);
1153 if (IS_ERR(op_data))
1154 return PTR_ERR(op_data);
1155
1156 if (src_dchild->d_inode)
1157 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1158 if (tgt_dchild->d_inode)
1159 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1160
1161 err = md_rename(sbi->ll_md_exp, op_data,
1162 src_dchild->d_name.name,
1163 src_dchild->d_name.len,
1164 tgt_dchild->d_name.name,
1165 tgt_dchild->d_name.len, &request);
1166 ll_finish_md_op_data(op_data);
1167 if (!err) {
1168 ll_update_times(request, src);
1169 ll_update_times(request, tgt);
1170 ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
1171 }
1172
1173 ptlrpc_req_finished(request);
1174 if (!err)
1175 d_move(src_dchild, tgt_dchild);
1176 return err;
1177}
1178
1179const struct inode_operations ll_dir_inode_operations = {
1180 .mknod = ll_mknod,
1181 .atomic_open = ll_atomic_open,
1182 .lookup = ll_lookup_nd,
1183 .create = ll_create_nd,
1184
1185 .unlink = ll_unlink,
1186 .mkdir = ll_mkdir,
1187 .rmdir = ll_rmdir,
1188 .symlink = ll_symlink,
1189 .link = ll_link,
1190 .rename = ll_rename,
1191 .setattr = ll_setattr,
1192 .getattr = ll_getattr,
1193 .permission = ll_inode_permission,
1194 .listxattr = ll_listxattr,
1195 .get_acl = ll_get_acl,
1196};
1197
1198const struct inode_operations ll_special_inode_operations = {
1199 .setattr = ll_setattr,
1200 .getattr = ll_getattr,
1201 .permission = ll_inode_permission,
1202 .listxattr = ll_listxattr,
1203 .get_acl = ll_get_acl,
1204};
1205