4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 #include <linux/sched.h>
40 #include <linux/quotaops.h>
41 #include <linux/highmem.h>
42 #include <linux/pagemap.h>
43 #include <linux/security.h>
45 #define DEBUG_SUBSYSTEM S_LLITE
47 #include <obd_support.h>
48 #include <lustre_fid.h>
49 #include <lustre_lite.h>
50 #include <lustre_dlm.h>
51 #include <lustre_ver.h>
52 #include "llite_internal.h"
54 static int ll_create_it(struct inode
*, struct dentry
*,
55 int, struct lookup_intent
*);
58 * Check if we have something mounted at the named dchild.
59 * In such a case there would always be dentry present.
61 static int ll_d_mountpoint(struct dentry
*dparent
, struct dentry
*dchild
,
66 if (unlikely(dchild
)) {
67 mounted
= d_mountpoint(dchild
);
69 dchild
= d_lookup(dparent
, name
);
71 mounted
= d_mountpoint(dchild
);
78 int ll_unlock(__u32 mode
, struct lustre_handle
*lockh
)
82 ldlm_lock_decref(lockh
, mode
);
88 /* called from iget5_locked->find_inode() under inode_lock spinlock */
89 static int ll_test_inode(struct inode
*inode
, void *opaque
)
91 struct ll_inode_info
*lli
= ll_i2info(inode
);
92 struct lustre_md
*md
= opaque
;
94 if (unlikely(!(md
->body
->valid
& OBD_MD_FLID
))) {
95 CERROR("MDS body missing FID\n");
99 if (!lu_fid_eq(&lli
->lli_fid
, &md
->body
->fid1
))
105 static int ll_set_inode(struct inode
*inode
, void *opaque
)
107 struct ll_inode_info
*lli
= ll_i2info(inode
);
108 struct mdt_body
*body
= ((struct lustre_md
*)opaque
)->body
;
110 if (unlikely(!(body
->valid
& OBD_MD_FLID
))) {
111 CERROR("MDS body missing FID\n");
115 lli
->lli_fid
= body
->fid1
;
116 if (unlikely(!(body
->valid
& OBD_MD_FLTYPE
))) {
117 CERROR("Can not initialize inode "DFID
" without object type: "
118 "valid = "LPX64
"\n", PFID(&lli
->lli_fid
), body
->valid
);
122 inode
->i_mode
= (inode
->i_mode
& ~S_IFMT
) | (body
->mode
& S_IFMT
);
123 if (unlikely(inode
->i_mode
== 0)) {
124 CERROR("Invalid inode "DFID
" type\n", PFID(&lli
->lli_fid
));
135 * Get an inode by inode number (already instantiated by the intent lookup).
136 * Returns inode or NULL
138 struct inode
*ll_iget(struct super_block
*sb
, ino_t hash
,
139 struct lustre_md
*md
)
145 inode
= iget5_locked(sb
, hash
, ll_test_inode
, ll_set_inode
, md
);
148 if (inode
->i_state
& I_NEW
) {
151 ll_read_inode2(inode
, md
);
152 if (S_ISREG(inode
->i_mode
) &&
153 ll_i2info(inode
)->lli_clob
== NULL
) {
155 "%s: apply lsm %p to inode "DFID
".\n",
156 ll_get_fsname(sb
, NULL
, 0), md
->lsm
,
157 PFID(ll_inode2fid(inode
)));
158 rc
= cl_file_inode_init(inode
, md
);
161 make_bad_inode(inode
);
162 unlock_new_inode(inode
);
166 unlock_new_inode(inode
);
167 } else if (!(inode
->i_state
& (I_FREEING
| I_CLEAR
)))
168 ll_update_inode(inode
, md
);
169 CDEBUG(D_VFSTRACE
, "got inode: %p for "DFID
"\n",
170 inode
, PFID(&md
->body
->fid1
));
175 static void ll_invalidate_negative_children(struct inode
*dir
)
177 struct dentry
*dentry
, *tmp_subdir
;
178 struct ll_d_hlist_node
*p
;
181 ll_d_hlist_for_each_entry(dentry
, p
, &dir
->i_dentry
, d_alias
) {
182 spin_lock(&dentry
->d_lock
);
183 if (!list_empty(&dentry
->d_subdirs
)) {
184 struct dentry
*child
;
186 list_for_each_entry_safe(child
, tmp_subdir
,
189 if (child
->d_inode
== NULL
)
190 d_lustre_invalidate(child
, 1);
193 spin_unlock(&dentry
->d_lock
);
195 ll_unlock_dcache(dir
);
198 int ll_md_blocking_ast(struct ldlm_lock
*lock
, struct ldlm_lock_desc
*desc
,
199 void *data
, int flag
)
202 struct lustre_handle lockh
;
206 case LDLM_CB_BLOCKING
:
207 ldlm_lock2handle(lock
, &lockh
);
208 rc
= ldlm_cli_cancel(&lockh
, LCF_ASYNC
);
210 CDEBUG(D_INODE
, "ldlm_cli_cancel: %d\n", rc
);
214 case LDLM_CB_CANCELING
: {
215 struct inode
*inode
= ll_inode_from_resource_lock(lock
);
216 struct ll_inode_info
*lli
;
217 __u64 bits
= lock
->l_policy_data
.l_inodebits
.bits
;
219 ldlm_mode_t mode
= lock
->l_req_mode
;
221 /* Inode is set to lock->l_resource->lr_lvb_inode
222 * for mdc - bug 24555 */
223 LASSERT(lock
->l_ast_data
== NULL
);
225 /* Invalidate all dentries associated with this inode */
229 LASSERT(lock
->l_flags
& LDLM_FL_CANCELING
);
230 /* For OPEN locks we differentiate between lock modes
231 * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
232 if (bits
& (MDS_INODELOCK_LOOKUP
| MDS_INODELOCK_UPDATE
|
233 MDS_INODELOCK_LAYOUT
| MDS_INODELOCK_PERM
))
234 ll_have_md_lock(inode
, &bits
, LCK_MINMODE
);
236 if (bits
& MDS_INODELOCK_OPEN
)
237 ll_have_md_lock(inode
, &bits
, mode
);
239 fid
= ll_inode2fid(inode
);
240 if (lock
->l_resource
->lr_name
.name
[0] != fid_seq(fid
) ||
241 lock
->l_resource
->lr_name
.name
[1] != fid_oid(fid
) ||
242 lock
->l_resource
->lr_name
.name
[2] != fid_ver(fid
)) {
243 LDLM_ERROR(lock
, "data mismatch with object "
244 DFID
" (%p)", PFID(fid
), inode
);
247 if (bits
& MDS_INODELOCK_OPEN
) {
249 switch (lock
->l_req_mode
) {
260 CERROR("Unexpected lock mode for OPEN lock "
261 "%d, inode %ld\n", lock
->l_req_mode
,
264 ll_md_real_close(inode
, flags
);
267 lli
= ll_i2info(inode
);
268 if (bits
& MDS_INODELOCK_LAYOUT
) {
269 struct cl_object_conf conf
= { { 0 } };
271 conf
.coc_opc
= OBJECT_CONF_INVALIDATE
;
272 conf
.coc_inode
= inode
;
273 rc
= ll_layout_conf(inode
, &conf
);
275 CDEBUG(D_INODE
, "invaliding layout %d.\n", rc
);
278 if (bits
& MDS_INODELOCK_UPDATE
)
279 lli
->lli_flags
&= ~LLIF_MDS_SIZE_LOCK
;
281 if (S_ISDIR(inode
->i_mode
) &&
282 (bits
& MDS_INODELOCK_UPDATE
)) {
283 CDEBUG(D_INODE
, "invalidating inode %lu\n",
285 truncate_inode_pages(inode
->i_mapping
, 0);
286 ll_invalidate_negative_children(inode
);
289 if (inode
->i_sb
->s_root
&&
290 inode
!= inode
->i_sb
->s_root
->d_inode
&&
291 (bits
& (MDS_INODELOCK_LOOKUP
| MDS_INODELOCK_PERM
)))
292 ll_invalidate_aliases(inode
);
303 __u32
ll_i2suppgid(struct inode
*i
)
305 if (current_is_in_group(i
->i_gid
))
306 return (__u32
)i
->i_gid
;
311 /* Pack the required supplementary groups into the supplied groups array.
312 * If we don't need to use the groups from the target inode(s) then we
313 * instead pack one or more groups from the user's supplementary group
314 * array in case it might be useful. Not needed if doing an MDS-side upcall. */
315 void ll_i2gids(__u32
*suppgids
, struct inode
*i1
, struct inode
*i2
)
322 LASSERT(suppgids
!= NULL
);
324 suppgids
[0] = ll_i2suppgid(i1
);
327 suppgids
[1] = ll_i2suppgid(i2
);
332 for (i
= 0; i
< current_ngroups
; i
++) {
333 if (suppgids
[0] == -1) {
334 if (current_groups
[i
] != suppgids
[1])
335 suppgids
[0] = current_groups
[i
];
338 if (suppgids
[1] == -1) {
339 if (current_groups
[i
] != suppgids
[0])
340 suppgids
[1] = current_groups
[i
];
349 * try to reuse three types of dentry:
350 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
351 * by concurrent .revalidate).
352 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
353 * be cleared by others calling d_lustre_revalidate).
354 * 3. DISCONNECTED alias.
356 static struct dentry
*ll_find_alias(struct inode
*inode
, struct dentry
*dentry
)
358 struct dentry
*alias
, *discon_alias
, *invalid_alias
;
359 struct ll_d_hlist_node
*p
;
361 if (ll_d_hlist_empty(&inode
->i_dentry
))
364 discon_alias
= invalid_alias
= NULL
;
366 ll_lock_dcache(inode
);
367 ll_d_hlist_for_each_entry(alias
, p
, &inode
->i_dentry
, d_alias
) {
368 LASSERT(alias
!= dentry
);
370 spin_lock(&alias
->d_lock
);
371 if (alias
->d_flags
& DCACHE_DISCONNECTED
)
372 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
373 discon_alias
= alias
;
374 else if (alias
->d_parent
== dentry
->d_parent
&&
375 alias
->d_name
.hash
== dentry
->d_name
.hash
&&
376 alias
->d_name
.len
== dentry
->d_name
.len
&&
377 memcmp(alias
->d_name
.name
, dentry
->d_name
.name
,
378 dentry
->d_name
.len
) == 0)
379 invalid_alias
= alias
;
380 spin_unlock(&alias
->d_lock
);
385 alias
= invalid_alias
?: discon_alias
?: NULL
;
387 spin_lock(&alias
->d_lock
);
389 spin_unlock(&alias
->d_lock
);
391 ll_unlock_dcache(inode
);
397 * Similar to d_splice_alias(), but lustre treats invalid alias
398 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
400 struct dentry
*ll_splice_alias(struct inode
*inode
, struct dentry
*de
)
405 new = ll_find_alias(inode
, de
);
407 ll_dops_init(new, 1, 1);
411 "Reuse dentry %p inode %p refc %d flags %#x\n",
412 new, new->d_inode
, d_count(new), new->d_flags
);
416 ll_dops_init(de
, 1, 1);
417 __d_lustre_invalidate(de
);
419 CDEBUG(D_DENTRY
, "Add dentry %p inode %p refc %d flags %#x\n",
420 de
, de
->d_inode
, d_count(de
), de
->d_flags
);
424 int ll_lookup_it_finish(struct ptlrpc_request
*request
,
425 struct lookup_intent
*it
, void *data
)
427 struct it_cb_data
*icbd
= data
;
428 struct dentry
**de
= icbd
->icbd_childp
;
429 struct inode
*parent
= icbd
->icbd_parent
;
430 struct inode
*inode
= NULL
;
435 /* NB 1 request reference will be taken away by ll_intent_lock()
437 CDEBUG(D_DENTRY
, "it %p it_disposition %x\n", it
,
438 it
->d
.lustre
.it_disposition
);
439 if (!it_disposition(it
, DISP_LOOKUP_NEG
)) {
440 rc
= ll_prep_inode(&inode
, request
, (*de
)->d_sb
, it
);
444 ll_set_lock_data(ll_i2sbi(parent
)->ll_md_exp
, inode
, it
, &bits
);
446 /* We used to query real size from OSTs here, but actually
447 this is not needed. For stat() calls size would be updated
448 from subsequent do_revalidate()->ll_inode_revalidate_it() in
450 vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
451 Everybody else who needs correct file size would call
452 ll_glimpse_size or some equivalent themselves anyway.
453 Also see bug 7198. */
456 /* Only hash *de if it is unhashed (new dentry).
457 * Atoimc_open may passin hashed dentries for open.
460 *de
= ll_splice_alias(inode
, *de
);
462 if (!it_disposition(it
, DISP_LOOKUP_NEG
)) {
463 /* we have lookup look - unhide dentry */
464 if (bits
& MDS_INODELOCK_LOOKUP
)
465 d_lustre_revalidate(*de
);
466 } else if (!it_disposition(it
, DISP_OPEN_CREATE
)) {
467 /* If file created on server, don't depend on parent UPDATE
468 * lock to unhide it. It is left hidden and next lookup can
469 * find it in ll_splice_alias.
471 /* Check that parent has UPDATE lock. */
472 struct lookup_intent parent_it
= {
474 .d
.lustre
.it_lock_handle
= 0 };
476 if (md_revalidate_lock(ll_i2mdexp(parent
), &parent_it
,
477 &ll_i2info(parent
)->lli_fid
, NULL
)) {
478 d_lustre_revalidate(*de
);
479 ll_intent_release(&parent_it
);
486 static struct dentry
*ll_lookup_it(struct inode
*parent
, struct dentry
*dentry
,
487 struct lookup_intent
*it
, int lookup_flags
)
489 struct lookup_intent lookup_it
= { .it_op
= IT_LOOKUP
};
490 struct dentry
*save
= dentry
, *retval
;
491 struct ptlrpc_request
*req
= NULL
;
492 struct md_op_data
*op_data
;
493 struct it_cb_data icbd
;
498 if (dentry
->d_name
.len
> ll_i2sbi(parent
)->ll_namelen
)
499 RETURN(ERR_PTR(-ENAMETOOLONG
));
501 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
502 dentry
->d_name
.len
, dentry
->d_name
.name
, parent
->i_ino
,
503 parent
->i_generation
, parent
, LL_IT2STR(it
));
505 if (d_mountpoint(dentry
))
506 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it
));
508 ll_frob_intent(&it
, &lookup_it
);
510 /* As do_lookup is called before follow_mount, root dentry may be left
511 * not valid, revalidate it here. */
512 if (parent
->i_sb
->s_root
&& (parent
->i_sb
->s_root
->d_inode
== parent
) &&
513 (it
->it_op
& (IT_OPEN
| IT_CREAT
))) {
514 rc
= ll_inode_revalidate_it(parent
->i_sb
->s_root
, it
,
515 MDS_INODELOCK_LOOKUP
);
520 if (it
->it_op
== IT_GETATTR
) {
521 rc
= ll_statahead_enter(parent
, &dentry
, 0);
524 GOTO(out
, retval
= NULL
);
525 GOTO(out
, retval
= dentry
);
529 icbd
.icbd_childp
= &dentry
;
530 icbd
.icbd_parent
= parent
;
532 if (it
->it_op
& IT_CREAT
||
533 (it
->it_op
& IT_OPEN
&& it
->it_create_mode
& O_CREAT
))
534 opc
= LUSTRE_OPC_CREATE
;
536 opc
= LUSTRE_OPC_ANY
;
538 op_data
= ll_prep_md_op_data(NULL
, parent
, NULL
, dentry
->d_name
.name
,
539 dentry
->d_name
.len
, lookup_flags
, opc
,
542 RETURN((void *)op_data
);
544 /* enforce umask if acl disabled or MDS doesn't support umask */
545 if (!IS_POSIXACL(parent
) || !exp_connect_umask(ll_i2mdexp(parent
)))
546 it
->it_create_mode
&= ~current_umask();
548 rc
= md_intent_lock(ll_i2mdexp(parent
), op_data
, NULL
, 0, it
,
549 lookup_flags
, &req
, ll_md_blocking_ast
, 0);
550 ll_finish_md_op_data(op_data
);
552 GOTO(out
, retval
= ERR_PTR(rc
));
554 rc
= ll_lookup_it_finish(req
, it
, &icbd
);
556 ll_intent_release(it
);
557 GOTO(out
, retval
= ERR_PTR(rc
));
560 if ((it
->it_op
& IT_OPEN
) && dentry
->d_inode
&&
561 !S_ISREG(dentry
->d_inode
->i_mode
) &&
562 !S_ISDIR(dentry
->d_inode
->i_mode
)) {
563 ll_release_openhandle(dentry
, it
);
565 ll_lookup_finish_locks(it
, dentry
);
568 GOTO(out
, retval
= NULL
);
570 GOTO(out
, retval
= dentry
);
573 ptlrpc_req_finished(req
);
574 if (it
->it_op
== IT_GETATTR
&& (retval
== NULL
|| retval
== dentry
))
575 ll_statahead_mark(parent
, dentry
);
579 static struct dentry
*ll_lookup_nd(struct inode
*parent
, struct dentry
*dentry
,
582 struct lookup_intent
*itp
, it
= { .it_op
= IT_GETATTR
};
585 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p),flags=%u\n",
586 dentry
->d_name
.len
, dentry
->d_name
.name
, parent
->i_ino
,
587 parent
->i_generation
, parent
, flags
);
589 /* Optimize away (CREATE && !OPEN). Let .create handle the race. */
590 if ((flags
& LOOKUP_CREATE
) && !(flags
& LOOKUP_OPEN
)) {
591 ll_dops_init(dentry
, 1, 1);
592 __d_lustre_invalidate(dentry
);
597 if (flags
& (LOOKUP_PARENT
|LOOKUP_OPEN
|LOOKUP_CREATE
))
601 de
= ll_lookup_it(parent
, dentry
, itp
, 0);
604 ll_intent_release(itp
);
610 * For cached negative dentry and new dentry, handle lookup/create/open
613 static int ll_atomic_open(struct inode
*dir
, struct dentry
*dentry
,
614 struct file
*file
, unsigned open_flags
,
615 umode_t mode
, int *opened
)
617 struct lookup_intent
*it
;
619 long long lookup_flags
= LOOKUP_OPEN
;
623 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p),file %p,"
624 "open_flags %x,mode %x opened %d\n",
625 dentry
->d_name
.len
, dentry
->d_name
.name
, dir
->i_ino
,
626 dir
->i_generation
, dir
, file
, open_flags
, mode
, *opened
);
628 OBD_ALLOC(it
, sizeof(*it
));
634 it
->it_op
|= IT_CREAT
;
635 lookup_flags
|= LOOKUP_CREATE
;
637 it
->it_create_mode
= (mode
& S_IALLUGO
) | S_IFREG
;
638 it
->it_flags
= (open_flags
& ~O_ACCMODE
) | OPEN_FMODE(open_flags
);
640 /* Dentry added to dcache tree in ll_lookup_it */
641 de
= ll_lookup_it(dir
, dentry
, it
, lookup_flags
);
648 if (it_disposition(it
, DISP_OPEN_CREATE
)) {
649 /* Dentry instantiated in ll_create_it. */
650 rc
= ll_create_it(dir
, dentry
, mode
, it
);
652 /* We dget in ll_splice_alias. */
658 *opened
|= FILE_CREATED
;
660 if (dentry
->d_inode
&& it_disposition(it
, DISP_OPEN_OPEN
)) {
662 if (S_ISFIFO(dentry
->d_inode
->i_mode
)) {
663 /* We cannot call open here as it would
666 if (it_disposition(it
, DISP_ENQ_OPEN_REF
))
668 (struct ptlrpc_request
*)
669 it
->d
.lustre
.it_data
);
670 rc
= finish_no_open(file
, de
);
672 file
->private_data
= it
;
673 rc
= finish_open(file
, dentry
, NULL
, opened
);
674 /* We dget in ll_splice_alias. finish_open takes
675 * care of dget for fd open.
681 rc
= finish_no_open(file
, de
);
686 ll_intent_release(it
);
687 OBD_FREE(it
, sizeof(*it
));
693 /* We depend on "mode" being set with the proper file type/umask by now */
694 static struct inode
*ll_create_node(struct inode
*dir
, const char *name
,
695 int namelen
, const void *data
, int datalen
,
696 int mode
, __u64 extra
,
697 struct lookup_intent
*it
)
699 struct inode
*inode
= NULL
;
700 struct ptlrpc_request
*request
= NULL
;
701 struct ll_sb_info
*sbi
= ll_i2sbi(dir
);
705 LASSERT(it
&& it
->d
.lustre
.it_disposition
);
707 LASSERT(it_disposition(it
, DISP_ENQ_CREATE_REF
));
708 request
= it
->d
.lustre
.it_data
;
709 it_clear_disposition(it
, DISP_ENQ_CREATE_REF
);
710 rc
= ll_prep_inode(&inode
, request
, dir
->i_sb
, it
);
712 GOTO(out
, inode
= ERR_PTR(rc
));
714 LASSERT(ll_d_hlist_empty(&inode
->i_dentry
));
716 /* We asked for a lock on the directory, but were granted a
717 * lock on the inode. Since we finally have an inode pointer,
718 * stuff it in the lock. */
719 CDEBUG(D_DLMTRACE
, "setting l_ast_data to inode %p (%lu/%u)\n",
720 inode
, inode
->i_ino
, inode
->i_generation
);
721 ll_set_lock_data(sbi
->ll_md_exp
, inode
, it
, NULL
);
724 ptlrpc_req_finished(request
);
729 * By the time this is called, we already have created the directory cache
730 * entry for the new file, but it is so far negative - it has no inode.
732 * We defer creating the OBD object(s) until open, to keep the intent and
733 * non-intent code paths similar, and also because we do not have the MDS
734 * inode number before calling ll_create_node() (which is needed for LOV),
735 * so we would need to do yet another RPC to the MDS to store the LOV EA
736 * data on the MDS. If needed, we would pass the PACKED lmm as data and
737 * lmm_size in datalen (the MDS still has code which will handle that).
739 * If the create succeeds, we fill in the inode information
740 * with d_instantiate().
742 static int ll_create_it(struct inode
*dir
, struct dentry
*dentry
, int mode
,
743 struct lookup_intent
*it
)
749 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
750 dentry
->d_name
.len
, dentry
->d_name
.name
, dir
->i_ino
,
751 dir
->i_generation
, dir
, LL_IT2STR(it
));
753 rc
= it_open_error(DISP_OPEN_CREATE
, it
);
757 inode
= ll_create_node(dir
, dentry
->d_name
.name
, dentry
->d_name
.len
,
758 NULL
, 0, mode
, 0, it
);
760 RETURN(PTR_ERR(inode
));
762 if (filename_is_volatile(dentry
->d_name
.name
, dentry
->d_name
.len
, NULL
))
763 ll_i2info(inode
)->lli_volatile
= true;
765 d_instantiate(dentry
, inode
);
769 static void ll_update_times(struct ptlrpc_request
*request
,
772 struct mdt_body
*body
= req_capsule_server_get(&request
->rq_pill
,
776 if (body
->valid
& OBD_MD_FLMTIME
&&
777 body
->mtime
> LTIME_S(inode
->i_mtime
)) {
778 CDEBUG(D_INODE
, "setting ino %lu mtime from %lu to "LPU64
"\n",
779 inode
->i_ino
, LTIME_S(inode
->i_mtime
), body
->mtime
);
780 LTIME_S(inode
->i_mtime
) = body
->mtime
;
782 if (body
->valid
& OBD_MD_FLCTIME
&&
783 body
->ctime
> LTIME_S(inode
->i_ctime
))
784 LTIME_S(inode
->i_ctime
) = body
->ctime
;
787 static int ll_new_node(struct inode
*dir
, struct qstr
*name
,
788 const char *tgt
, int mode
, int rdev
,
789 struct dentry
*dchild
, __u32 opc
)
791 struct ptlrpc_request
*request
= NULL
;
792 struct md_op_data
*op_data
;
793 struct inode
*inode
= NULL
;
794 struct ll_sb_info
*sbi
= ll_i2sbi(dir
);
799 if (unlikely(tgt
!= NULL
))
800 tgt_len
= strlen(tgt
) + 1;
802 op_data
= ll_prep_md_op_data(NULL
, dir
, NULL
, name
->name
,
803 name
->len
, 0, opc
, NULL
);
805 GOTO(err_exit
, err
= PTR_ERR(op_data
));
807 err
= md_create(sbi
->ll_md_exp
, op_data
, tgt
, tgt_len
, mode
,
808 current_fsuid(), current_fsgid(),
809 cfs_curproc_cap_pack(), rdev
, &request
);
810 ll_finish_md_op_data(op_data
);
814 ll_update_times(request
, dir
);
817 err
= ll_prep_inode(&inode
, request
, dchild
->d_sb
, NULL
);
821 d_instantiate(dchild
, inode
);
825 ptlrpc_req_finished(request
);
830 static int ll_mknod_generic(struct inode
*dir
, struct qstr
*name
, int mode
,
831 unsigned rdev
, struct dentry
*dchild
)
836 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
837 name
->len
, name
->name
, dir
->i_ino
, dir
->i_generation
, dir
,
840 if (!IS_POSIXACL(dir
) || !exp_connect_umask(ll_i2mdexp(dir
)))
841 mode
&= ~current_umask();
843 switch (mode
& S_IFMT
) {
845 mode
|= S_IFREG
; /* for mode = 0 case, fallthrough */
851 err
= ll_new_node(dir
, name
, NULL
, mode
, rdev
, dchild
,
862 ll_stats_ops_tally(ll_i2sbi(dir
), LPROC_LL_MKNOD
, 1);
868 * Plain create. Intent create is handled in atomic_open.
870 static int ll_create_nd(struct inode
*dir
, struct dentry
*dentry
,
871 umode_t mode
, bool want_excl
)
875 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p),"
876 "flags=%u, excl=%d\n",
877 dentry
->d_name
.len
, dentry
->d_name
.name
, dir
->i_ino
,
878 dir
->i_generation
, dir
, mode
, want_excl
);
880 rc
= ll_mknod_generic(dir
, &dentry
->d_name
, mode
, 0, dentry
);
882 ll_stats_ops_tally(ll_i2sbi(dir
), LPROC_LL_CREATE
, 1);
884 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s, unhashed %d\n",
885 dentry
->d_name
.len
, dentry
->d_name
.name
, d_unhashed(dentry
));
890 static int ll_symlink_generic(struct inode
*dir
, struct qstr
*name
,
891 const char *tgt
, struct dentry
*dchild
)
896 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
897 name
->len
, name
->name
, dir
->i_ino
, dir
->i_generation
,
900 err
= ll_new_node(dir
, name
, (char *)tgt
, S_IFLNK
| S_IRWXUGO
,
901 0, dchild
, LUSTRE_OPC_SYMLINK
);
904 ll_stats_ops_tally(ll_i2sbi(dir
), LPROC_LL_SYMLINK
, 1);
909 static int ll_link_generic(struct inode
*src
, struct inode
*dir
,
910 struct qstr
*name
, struct dentry
*dchild
)
912 struct ll_sb_info
*sbi
= ll_i2sbi(dir
);
913 struct ptlrpc_request
*request
= NULL
;
914 struct md_op_data
*op_data
;
919 "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
920 src
->i_ino
, src
->i_generation
, src
, dir
->i_ino
,
921 dir
->i_generation
, dir
, name
->len
, name
->name
);
923 op_data
= ll_prep_md_op_data(NULL
, src
, dir
, name
->name
, name
->len
,
924 0, LUSTRE_OPC_ANY
, NULL
);
926 RETURN(PTR_ERR(op_data
));
928 err
= md_link(sbi
->ll_md_exp
, op_data
, &request
);
929 ll_finish_md_op_data(op_data
);
933 ll_update_times(request
, dir
);
934 ll_stats_ops_tally(sbi
, LPROC_LL_LINK
, 1);
937 ptlrpc_req_finished(request
);
941 static int ll_mkdir_generic(struct inode
*dir
, struct qstr
*name
,
942 int mode
, struct dentry
*dchild
)
948 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
949 name
->len
, name
->name
, dir
->i_ino
, dir
->i_generation
, dir
);
951 if (!IS_POSIXACL(dir
) || !exp_connect_umask(ll_i2mdexp(dir
)))
952 mode
&= ~current_umask();
953 mode
= (mode
& (S_IRWXUGO
|S_ISVTX
)) | S_IFDIR
;
954 err
= ll_new_node(dir
, name
, NULL
, mode
, 0, dchild
, LUSTRE_OPC_MKDIR
);
957 ll_stats_ops_tally(ll_i2sbi(dir
), LPROC_LL_MKDIR
, 1);
962 /* Try to find the child dentry by its name.
963 If found, put the result fid into @fid. */
964 static void ll_get_child_fid(struct inode
* dir
, struct qstr
*name
,
967 struct dentry
*parent
, *child
;
969 parent
= ll_d_hlist_entry(dir
->i_dentry
, struct dentry
, d_alias
);
970 child
= d_lookup(parent
, name
);
973 *fid
= *ll_inode2fid(child
->d_inode
);
978 static int ll_rmdir_generic(struct inode
*dir
, struct dentry
*dparent
,
979 struct dentry
*dchild
, struct qstr
*name
)
981 struct ptlrpc_request
*request
= NULL
;
982 struct md_op_data
*op_data
;
986 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
987 name
->len
, name
->name
, dir
->i_ino
, dir
->i_generation
, dir
);
989 if (unlikely(ll_d_mountpoint(dparent
, dchild
, name
)))
992 op_data
= ll_prep_md_op_data(NULL
, dir
, NULL
, name
->name
, name
->len
,
993 S_IFDIR
, LUSTRE_OPC_ANY
, NULL
);
995 RETURN(PTR_ERR(op_data
));
997 ll_get_child_fid(dir
, name
, &op_data
->op_fid3
);
998 op_data
->op_fid2
= op_data
->op_fid3
;
999 rc
= md_unlink(ll_i2sbi(dir
)->ll_md_exp
, op_data
, &request
);
1000 ll_finish_md_op_data(op_data
);
1002 ll_update_times(request
, dir
);
1003 ll_stats_ops_tally(ll_i2sbi(dir
), LPROC_LL_RMDIR
, 1);
1006 ptlrpc_req_finished(request
);
1013 int ll_rmdir_entry(struct inode
*dir
, char *name
, int namelen
)
1015 struct ptlrpc_request
*request
= NULL
;
1016 struct md_op_data
*op_data
;
1020 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1021 namelen
, name
, dir
->i_ino
, dir
->i_generation
, dir
);
1023 op_data
= ll_prep_md_op_data(NULL
, dir
, NULL
, name
, strlen(name
),
1024 S_IFDIR
, LUSTRE_OPC_ANY
, NULL
);
1025 if (IS_ERR(op_data
))
1026 RETURN(PTR_ERR(op_data
));
1027 op_data
->op_cli_flags
|= CLI_RM_ENTRY
;
1028 rc
= md_unlink(ll_i2sbi(dir
)->ll_md_exp
, op_data
, &request
);
1029 ll_finish_md_op_data(op_data
);
1031 ll_update_times(request
, dir
);
1032 ll_stats_ops_tally(ll_i2sbi(dir
), LPROC_LL_RMDIR
, 1);
1035 ptlrpc_req_finished(request
);
1039 int ll_objects_destroy(struct ptlrpc_request
*request
, struct inode
*dir
)
1041 struct mdt_body
*body
;
1042 struct lov_mds_md
*eadata
;
1043 struct lov_stripe_md
*lsm
= NULL
;
1044 struct obd_trans_info oti
= { 0 };
1046 struct obd_capa
*oc
= NULL
;
1050 /* req is swabbed so this is safe */
1051 body
= req_capsule_server_get(&request
->rq_pill
, &RMF_MDT_BODY
);
1052 if (!(body
->valid
& OBD_MD_FLEASIZE
))
1055 if (body
->eadatasize
== 0) {
1056 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1057 GOTO(out
, rc
= -EPROTO
);
1060 /* The MDS sent back the EA because we unlinked the last reference
1061 * to this file. Use this EA to unlink the objects on the OST.
1062 * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1063 * check it is complete and sensible. */
1064 eadata
= req_capsule_server_sized_get(&request
->rq_pill
, &RMF_MDT_MD
,
1066 LASSERT(eadata
!= NULL
);
1068 rc
= obd_unpackmd(ll_i2dtexp(dir
), &lsm
, eadata
, body
->eadatasize
);
1070 CERROR("obd_unpackmd: %d\n", rc
);
1073 LASSERT(rc
>= sizeof(*lsm
));
1077 GOTO(out_free_memmd
, rc
= -ENOMEM
);
1079 oa
->o_oi
= lsm
->lsm_oi
;
1080 oa
->o_mode
= body
->mode
& S_IFMT
;
1081 oa
->o_valid
= OBD_MD_FLID
| OBD_MD_FLTYPE
| OBD_MD_FLGROUP
;
1083 if (body
->valid
& OBD_MD_FLCOOKIE
) {
1084 oa
->o_valid
|= OBD_MD_FLCOOKIE
;
1085 oti
.oti_logcookies
=
1086 req_capsule_server_sized_get(&request
->rq_pill
,
1088 sizeof(struct llog_cookie
) *
1089 lsm
->lsm_stripe_count
);
1090 if (oti
.oti_logcookies
== NULL
) {
1091 oa
->o_valid
&= ~OBD_MD_FLCOOKIE
;
1092 body
->valid
&= ~OBD_MD_FLCOOKIE
;
1096 if (body
->valid
& OBD_MD_FLOSSCAPA
) {
1097 rc
= md_unpack_capa(ll_i2mdexp(dir
), request
, &RMF_CAPA2
, &oc
);
1099 GOTO(out_free_memmd
, rc
);
1102 rc
= obd_destroy(NULL
, ll_i2dtexp(dir
), oa
, lsm
, &oti
,
1103 ll_i2mdexp(dir
), oc
);
1106 CERROR("obd destroy objid "DOSTID
" error %d\n",
1107 POSTID(&lsm
->lsm_oi
), rc
);
1109 obd_free_memmd(ll_i2dtexp(dir
), &lsm
);
1115 /* ll_unlink_generic() doesn't update the inode with the new link count.
1116 * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1117 * is any lock existing. They will recycle dentries and inodes based upon locks
1119 static int ll_unlink_generic(struct inode
*dir
, struct dentry
*dparent
,
1120 struct dentry
*dchild
, struct qstr
*name
)
1122 struct ptlrpc_request
*request
= NULL
;
1123 struct md_op_data
*op_data
;
1126 CDEBUG(D_VFSTRACE
, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1127 name
->len
, name
->name
, dir
->i_ino
, dir
->i_generation
, dir
);
1130 * XXX: unlink bind mountpoint maybe call to here,
1131 * just check it as vfs_unlink does.
1133 if (unlikely(ll_d_mountpoint(dparent
, dchild
, name
)))
1136 op_data
= ll_prep_md_op_data(NULL
, dir
, NULL
, name
->name
,
1137 name
->len
, 0, LUSTRE_OPC_ANY
, NULL
);
1138 if (IS_ERR(op_data
))
1139 RETURN(PTR_ERR(op_data
));
1141 ll_get_child_fid(dir
, name
, &op_data
->op_fid3
);
1142 op_data
->op_fid2
= op_data
->op_fid3
;
1143 rc
= md_unlink(ll_i2sbi(dir
)->ll_md_exp
, op_data
, &request
);
1144 ll_finish_md_op_data(op_data
);
1148 ll_update_times(request
, dir
);
1149 ll_stats_ops_tally(ll_i2sbi(dir
), LPROC_LL_UNLINK
, 1);
1151 rc
= ll_objects_destroy(request
, dir
);
1153 ptlrpc_req_finished(request
);
1157 static int ll_rename_generic(struct inode
*src
, struct dentry
*src_dparent
,
1158 struct dentry
*src_dchild
, struct qstr
*src_name
,
1159 struct inode
*tgt
, struct dentry
*tgt_dparent
,
1160 struct dentry
*tgt_dchild
, struct qstr
*tgt_name
)
1162 struct ptlrpc_request
*request
= NULL
;
1163 struct ll_sb_info
*sbi
= ll_i2sbi(src
);
1164 struct md_op_data
*op_data
;
1167 CDEBUG(D_VFSTRACE
,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1168 "tgt_dir=%lu/%u(%p)\n", src_name
->len
, src_name
->name
,
1169 src
->i_ino
, src
->i_generation
, src
, tgt_name
->len
,
1170 tgt_name
->name
, tgt
->i_ino
, tgt
->i_generation
, tgt
);
1172 if (unlikely(ll_d_mountpoint(src_dparent
, src_dchild
, src_name
) ||
1173 ll_d_mountpoint(tgt_dparent
, tgt_dchild
, tgt_name
)))
1176 op_data
= ll_prep_md_op_data(NULL
, src
, tgt
, NULL
, 0, 0,
1177 LUSTRE_OPC_ANY
, NULL
);
1178 if (IS_ERR(op_data
))
1179 RETURN(PTR_ERR(op_data
));
1181 ll_get_child_fid(src
, src_name
, &op_data
->op_fid3
);
1182 ll_get_child_fid(tgt
, tgt_name
, &op_data
->op_fid4
);
1183 err
= md_rename(sbi
->ll_md_exp
, op_data
,
1184 src_name
->name
, src_name
->len
,
1185 tgt_name
->name
, tgt_name
->len
, &request
);
1186 ll_finish_md_op_data(op_data
);
1188 ll_update_times(request
, src
);
1189 ll_update_times(request
, tgt
);
1190 ll_stats_ops_tally(sbi
, LPROC_LL_RENAME
, 1);
1191 err
= ll_objects_destroy(request
, src
);
1194 ptlrpc_req_finished(request
);
1199 static int ll_mknod(struct inode
*dir
, struct dentry
*dchild
, ll_umode_t mode
,
1202 return ll_mknod_generic(dir
, &dchild
->d_name
, mode
,
1203 old_encode_dev(rdev
), dchild
);
1206 static int ll_unlink(struct inode
* dir
, struct dentry
*dentry
)
1208 return ll_unlink_generic(dir
, NULL
, dentry
, &dentry
->d_name
);
1211 static int ll_mkdir(struct inode
*dir
, struct dentry
*dentry
, ll_umode_t mode
)
1213 return ll_mkdir_generic(dir
, &dentry
->d_name
, mode
, dentry
);
1216 static int ll_rmdir(struct inode
*dir
, struct dentry
*dentry
)
1218 return ll_rmdir_generic(dir
, NULL
, dentry
, &dentry
->d_name
);
1221 static int ll_symlink(struct inode
*dir
, struct dentry
*dentry
,
1222 const char *oldname
)
1224 return ll_symlink_generic(dir
, &dentry
->d_name
, oldname
, dentry
);
1227 static int ll_link(struct dentry
*old_dentry
, struct inode
*dir
,
1228 struct dentry
*new_dentry
)
1230 return ll_link_generic(old_dentry
->d_inode
, dir
, &new_dentry
->d_name
,
1234 static int ll_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1235 struct inode
*new_dir
, struct dentry
*new_dentry
)
1238 err
= ll_rename_generic(old_dir
, NULL
,
1239 old_dentry
, &old_dentry
->d_name
,
1240 new_dir
, NULL
, new_dentry
,
1241 &new_dentry
->d_name
);
1243 d_move(old_dentry
, new_dentry
);
1248 struct inode_operations ll_dir_inode_operations
= {
1250 .atomic_open
= ll_atomic_open
,
1251 .lookup
= ll_lookup_nd
,
1252 .create
= ll_create_nd
,
1253 /* We need all these non-raw things for NFSD, to not patch it. */
1254 .unlink
= ll_unlink
,
1257 .symlink
= ll_symlink
,
1259 .rename
= ll_rename
,
1260 .setattr
= ll_setattr
,
1261 .getattr
= ll_getattr
,
1262 .permission
= ll_inode_permission
,
1263 .setxattr
= ll_setxattr
,
1264 .getxattr
= ll_getxattr
,
1265 .listxattr
= ll_listxattr
,
1266 .removexattr
= ll_removexattr
,
1267 .get_acl
= ll_get_acl
,
1270 struct inode_operations ll_special_inode_operations
= {
1271 .setattr
= ll_setattr
,
1272 .getattr
= ll_getattr
,
1273 .permission
= ll_inode_permission
,
1274 .setxattr
= ll_setxattr
,
1275 .getxattr
= ll_getxattr
,
1276 .listxattr
= ll_listxattr
,
1277 .removexattr
= ll_removexattr
,
1278 .get_acl
= ll_get_acl
,