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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
34 #include <linux/sched.h>
36 #include <linux/quotaops.h>
37 #include <linux/highmem.h>
38 #include <linux/pagemap.h>
39 #include <linux/security.h>
40 #include <linux/user_namespace.h>
41 #include <linux/uidgid.h>
43 #define DEBUG_SUBSYSTEM S_LLITE
45 #include <obd_support.h>
46 #include <lustre_fid.h>
47 #include <lustre_dlm.h>
48 #include "llite_internal.h"
50 static int ll_create_it(struct inode *dir, struct dentry *dentry,
51 struct lookup_intent *it,
52 void *secctx, __u32 secctxlen);
54 /* called from iget5_locked->find_inode() under inode_lock spinlock */
55 static int ll_test_inode(struct inode *inode, void *opaque)
57 struct ll_inode_info *lli = ll_i2info(inode);
58 struct lustre_md *md = opaque;
60 if (unlikely(!(md->body->mbo_valid & OBD_MD_FLID))) {
61 CERROR("MDS body missing FID\n");
65 if (!lu_fid_eq(&lli->lli_fid, &md->body->mbo_fid1))
71 static int ll_set_inode(struct inode *inode, void *opaque)
73 struct ll_inode_info *lli = ll_i2info(inode);
74 struct mdt_body *body = ((struct lustre_md *)opaque)->body;
76 if (unlikely(!(body->mbo_valid & OBD_MD_FLID))) {
77 CERROR("MDS body missing FID\n");
81 lli->lli_fid = body->mbo_fid1;
82 if (unlikely(!(body->mbo_valid & OBD_MD_FLTYPE))) {
83 CERROR("Can not initialize inode "DFID" without object type: "
85 PFID(&lli->lli_fid), body->mbo_valid);
89 inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mbo_mode & S_IFMT);
90 if (unlikely(inode->i_mode == 0)) {
91 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
102 * Get an inode by inode number(@hash), which is already instantiated by
103 * the intent lookup).
105 struct inode *ll_iget(struct super_block *sb, ino_t hash,
106 struct lustre_md *md)
114 inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
116 RETURN(ERR_PTR(-ENOMEM));
118 if (inode->i_state & I_NEW) {
119 rc = ll_read_inode2(inode, md);
120 if (rc == 0 && S_ISREG(inode->i_mode) &&
121 ll_i2info(inode)->lli_clob == NULL)
122 rc = cl_file_inode_init(inode, md);
125 /* Let's clear directory lsm here, otherwise
126 * make_bad_inode() will reset the inode mode
127 * to regular, then ll_clear_inode will not
128 * be able to clear lsm_md */
129 if (S_ISDIR(inode->i_mode))
130 ll_dir_clear_lsm_md(inode);
131 make_bad_inode(inode);
132 unlock_new_inode(inode);
136 inode_has_no_xattr(inode);
137 unlock_new_inode(inode);
139 } else if (is_bad_inode(inode)) {
141 inode = ERR_PTR(-ESTALE);
142 } else if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
143 rc = ll_update_inode(inode, md);
144 CDEBUG(D_VFSTRACE, "got inode: "DFID"(%p): rc = %d\n",
145 PFID(&md->body->mbo_fid1), inode, rc);
147 if (S_ISDIR(inode->i_mode))
148 ll_dir_clear_lsm_md(inode);
157 static void ll_invalidate_negative_children(struct inode *dir)
159 struct dentry *dentry, *tmp_subdir;
161 spin_lock(&dir->i_lock);
162 hlist_for_each_entry(dentry, &dir->i_dentry, d_alias) {
163 spin_lock(&dentry->d_lock);
164 if (!list_empty(&dentry->d_subdirs)) {
165 struct dentry *child;
167 list_for_each_entry_safe(child, tmp_subdir,
170 if (child->d_inode == NULL)
171 d_lustre_invalidate(child, 1);
174 spin_unlock(&dentry->d_lock);
176 spin_unlock(&dir->i_lock);
179 int ll_test_inode_by_fid(struct inode *inode, void *opaque)
181 return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
184 static int ll_dom_lock_cancel(struct inode *inode, struct ldlm_lock *lock)
187 struct ll_inode_info *lli = ll_i2info(inode);
192 if (!lli->lli_clob) {
193 /* due to DoM read on open, there may exist pages for Lustre
194 * regular file even though cl_object is not set up yet. */
195 truncate_inode_pages(inode->i_mapping, 0);
199 env = cl_env_get(&refcheck);
201 RETURN(PTR_ERR(env));
203 /* reach MDC layer to flush data under the DoM ldlm lock */
204 rc = cl_object_flush(env, lli->lli_clob, lock);
205 if (rc == -ENODATA) {
206 CDEBUG(D_INODE, "inode "DFID" layout has no DoM stripe\n",
207 PFID(ll_inode2fid(inode)));
208 /* most likely result of layout change, do nothing */
212 cl_env_put(env, &refcheck);
216 static void ll_lock_cancel_bits(struct ldlm_lock *lock, __u64 to_cancel)
218 struct inode *inode = ll_inode_from_resource_lock(lock);
219 struct ll_inode_info *lli;
220 __u64 bits = to_cancel;
226 /* That means the inode is evicted most likely and may cause
227 * the skipping of lock cleanups below, so print the message
230 if (lock->l_resource->lr_lvb_inode)
232 "can't take inode for the lock (%sevicted)\n",
233 lock->l_resource->lr_lvb_inode->i_state &
234 I_FREEING ? "" : "not ");
238 if (!fid_res_name_eq(ll_inode2fid(inode),
239 &lock->l_resource->lr_name)) {
240 LDLM_ERROR(lock, "data mismatch with object "DFID"(%p)",
241 PFID(ll_inode2fid(inode)), inode);
245 if (bits & MDS_INODELOCK_XATTR) {
246 ll_xattr_cache_destroy(inode);
247 bits &= ~MDS_INODELOCK_XATTR;
250 /* For OPEN locks we differentiate between lock modes
251 * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
252 if (bits & MDS_INODELOCK_OPEN)
253 ll_have_md_lock(inode, &bits, lock->l_req_mode);
255 if (bits & MDS_INODELOCK_OPEN) {
258 switch (lock->l_req_mode) {
269 LDLM_ERROR(lock, "bad lock mode for OPEN lock");
273 ll_md_real_close(inode, fmode);
275 bits &= ~MDS_INODELOCK_OPEN;
278 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
279 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM |
281 ll_have_md_lock(inode, &bits, LCK_MINMODE);
283 if (bits & MDS_INODELOCK_DOM) {
284 rc = ll_dom_lock_cancel(inode, lock);
286 CDEBUG(D_INODE, "cannot flush DoM data "
288 PFID(ll_inode2fid(inode)), rc);
291 if (bits & MDS_INODELOCK_LAYOUT) {
292 struct cl_object_conf conf = {
293 .coc_opc = OBJECT_CONF_INVALIDATE,
297 rc = ll_layout_conf(inode, &conf);
299 CDEBUG(D_INODE, "cannot invalidate layout of "
301 PFID(ll_inode2fid(inode)), rc);
304 lli = ll_i2info(inode);
306 if (bits & MDS_INODELOCK_UPDATE)
307 ll_file_set_flag(lli, LLIF_UPDATE_ATIME);
309 if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
310 CDEBUG(D_INODE, "invalidating inode "DFID" lli = %p, "
311 "pfid = "DFID"\n", PFID(ll_inode2fid(inode)),
312 lli, PFID(&lli->lli_pfid));
313 truncate_inode_pages(inode->i_mapping, 0);
315 if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
316 struct inode *master_inode = NULL;
319 /* This is slave inode, since all of the child dentry
320 * is connected on the master inode, so we have to
321 * invalidate the negative children on master inode */
322 CDEBUG(D_INODE, "Invalidate s"DFID" m"DFID"\n",
323 PFID(ll_inode2fid(inode)), PFID(&lli->lli_pfid));
325 hash = cl_fid_build_ino(&lli->lli_pfid,
326 ll_need_32bit_api(ll_i2sbi(inode)));
328 /* Do not lookup the inode with ilookup5, otherwise
329 * it will cause dead lock,
330 * 1. Client1 send chmod req to the MDT0, then on MDT0,
331 * it enqueues master and all of its slaves lock,
332 * (mdt_attr_set() -> mdt_lock_slaves()), after gets
333 * master and stripe0 lock, it will send the enqueue
334 * req (for stripe1) to MDT1, then MDT1 finds the lock
335 * has been granted to client2. Then MDT1 sends blocking
337 * 2. At the same time, client2 tries to unlink
338 * the striped dir (rm -rf striped_dir), and during
339 * lookup, it will hold the master inode of the striped
340 * directory, whose inode state is NEW, then tries to
341 * revalidate all of its slaves, (ll_prep_inode()->
342 * ll_iget()->ll_read_inode2()-> ll_update_inode().).
343 * And it will be blocked on the server side because
345 * 3. Then the client get the blocking_ast req, cancel
346 * the lock, but being blocked if using ->ilookup5()),
347 * because master inode state is NEW. */
348 master_inode = ilookup5_nowait(inode->i_sb, hash,
349 ll_test_inode_by_fid,
350 (void *)&lli->lli_pfid);
352 ll_invalidate_negative_children(master_inode);
356 ll_invalidate_negative_children(inode);
360 if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
361 inode->i_sb->s_root != NULL &&
362 inode != inode->i_sb->s_root->d_inode)
363 ll_invalidate_aliases(inode);
365 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM))
366 forget_all_cached_acls(inode);
372 /* Check if the given lock may be downgraded instead of canceling and
373 * that convert is really needed. */
374 int ll_md_need_convert(struct ldlm_lock *lock)
376 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
378 __u64 wanted = lock->l_policy_data.l_inodebits.cancel_bits;
379 __u64 bits = lock->l_policy_data.l_inodebits.bits & ~wanted;
380 enum ldlm_mode mode = LCK_MINMODE;
382 if (!lock->l_conn_export ||
383 !exp_connect_lock_convert(lock->l_conn_export))
386 if (!wanted || !bits || ldlm_is_cancel(lock))
389 /* do not convert locks other than DOM for now */
390 if (!((bits | wanted) & MDS_INODELOCK_DOM))
393 /* We may have already remaining bits in some other lock so
394 * lock convert will leave us just extra lock for the same bit.
395 * Check if client has other lock with the same bits and the same
396 * or lower mode and don't convert if any.
398 switch (lock->l_req_mode) {
412 /* do not convert other modes */
416 /* is lock is too old to be converted? */
417 lock_res_and_lock(lock);
418 if (ktime_after(ktime_get(),
419 ktime_add(lock->l_last_used,
420 ktime_set(ns->ns_dirty_age_limit, 0)))) {
421 unlock_res_and_lock(lock);
424 unlock_res_and_lock(lock);
426 inode = ll_inode_from_resource_lock(lock);
427 ll_have_md_lock(inode, &bits, mode);
432 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *ld,
433 void *data, int flag)
435 struct lustre_handle lockh;
441 case LDLM_CB_BLOCKING:
443 __u64 cancel_flags = LCF_ASYNC;
445 /* if lock convert is not needed then still have to
446 * pass lock via ldlm_cli_convert() to keep all states
447 * correct, set cancel_bits to full lock bits to cause
448 * full cancel to happen.
450 if (!ll_md_need_convert(lock)) {
451 lock_res_and_lock(lock);
452 lock->l_policy_data.l_inodebits.cancel_bits =
453 lock->l_policy_data.l_inodebits.bits;
454 unlock_res_and_lock(lock);
456 rc = ldlm_cli_convert(lock, cancel_flags);
459 /* continue with cancel otherwise */
460 ldlm_lock2handle(lock, &lockh);
461 rc = ldlm_cli_cancel(&lockh, cancel_flags);
463 CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
468 case LDLM_CB_CANCELING:
470 __u64 to_cancel = lock->l_policy_data.l_inodebits.bits;
472 /* Nothing to do for non-granted locks */
473 if (!ldlm_is_granted(lock))
476 /* If 'ld' is supplied then bits to be cancelled are passed
477 * implicitly by lock converting and cancel_bits from 'ld'
478 * should be used. Otherwise full cancel is being performed
479 * and lock inodebits are used.
481 * Note: we cannot rely on cancel_bits in lock itself at this
482 * moment because they can be changed by concurrent thread,
483 * so ldlm_cli_inodebits_convert() pass cancel bits implicitly
487 /* partial bits cancel allowed only during convert */
488 LASSERT(ldlm_is_converting(lock));
489 /* mask cancel bits by lock bits so only no any unused
490 * bits are passed to ll_lock_cancel_bits()
492 to_cancel &= ld->l_policy_data.l_inodebits.cancel_bits;
494 ll_lock_cancel_bits(lock, to_cancel);
504 __u32 ll_i2suppgid(struct inode *i)
506 if (in_group_p(i->i_gid))
507 return (__u32)from_kgid(&init_user_ns, i->i_gid);
509 return (__u32) __kgid_val(INVALID_GID);
512 /* Pack the required supplementary groups into the supplied groups array.
513 * If we don't need to use the groups from the target inode(s) then we
514 * instead pack one or more groups from the user's supplementary group
515 * array in case it might be useful. Not needed if doing an MDS-side upcall. */
516 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
519 LASSERT(suppgids != NULL);
521 suppgids[0] = ll_i2suppgid(i1);
524 suppgids[1] = ll_i2suppgid(i2);
530 * try to reuse three types of dentry:
531 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
532 * by concurrent .revalidate).
533 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
534 * be cleared by others calling d_lustre_revalidate).
535 * 3. DISCONNECTED alias.
537 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
539 struct dentry *alias, *discon_alias, *invalid_alias;
541 if (hlist_empty(&inode->i_dentry))
544 discon_alias = invalid_alias = NULL;
546 spin_lock(&inode->i_lock);
547 hlist_for_each_entry(alias, &inode->i_dentry, d_alias) {
548 LASSERT(alias != dentry);
550 spin_lock(&alias->d_lock);
551 if ((alias->d_flags & DCACHE_DISCONNECTED) &&
552 S_ISDIR(inode->i_mode))
553 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
554 discon_alias = alias;
555 else if (alias->d_parent == dentry->d_parent &&
556 alias->d_name.hash == dentry->d_name.hash &&
557 alias->d_name.len == dentry->d_name.len &&
558 memcmp(alias->d_name.name, dentry->d_name.name,
559 dentry->d_name.len) == 0)
560 invalid_alias = alias;
561 spin_unlock(&alias->d_lock);
566 alias = invalid_alias ?: discon_alias ?: NULL;
568 spin_lock(&alias->d_lock);
570 spin_unlock(&alias->d_lock);
572 spin_unlock(&inode->i_lock);
578 * Similar to d_splice_alias(), but lustre treats invalid alias
579 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
581 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
587 new = ll_find_alias(inode, de);
597 "Reuse dentry %p inode %p refc %d flags %#x\n",
598 new, new->d_inode, ll_d_count(new), new->d_flags);
606 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
607 de, de->d_inode, ll_d_count(de), de->d_flags);
611 static int ll_lookup_it_finish(struct ptlrpc_request *request,
612 struct lookup_intent *it,
613 struct inode *parent, struct dentry **de,
614 void *secctx, __u32 secctxlen,
617 struct inode *inode = NULL;
620 struct dentry *alias;
623 /* NB 1 request reference will be taken away by ll_intent_lock()
625 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
627 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
628 struct req_capsule *pill = &request->rq_pill;
629 struct mdt_body *body = req_capsule_server_get(pill,
632 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
636 if (it->it_op & IT_OPEN)
637 ll_dom_finish_open(inode, request, it);
639 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
641 /* We used to query real size from OSTs here, but actually
642 * this is not needed. For stat() calls size would be updated
643 * from subsequent do_revalidate()->ll_inode_revalidate_it() in
645 * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
646 * Everybody else who needs correct file size would call
647 * ll_glimpse_size or some equivalent themselves anyway.
651 /* If security context was returned by MDT, put it in
652 * inode now to save an extra getxattr from security hooks,
653 * and avoid deadlock.
655 if (body->mbo_valid & OBD_MD_SECCTX) {
656 secctx = req_capsule_server_get(pill, &RMF_FILE_SECCTX);
657 secctxlen = req_capsule_get_size(pill,
662 CDEBUG(D_SEC, "server returned security context"
664 PFID(ll_inode2fid(inode)));
667 if (secctx != NULL && secctxlen != 0) {
669 rc = security_inode_notifysecctx(inode, secctx,
673 CWARN("cannot set security context for "
675 PFID(ll_inode2fid(inode)), rc);
679 /* Only hash *de if it is unhashed (new dentry).
680 * Atoimc_open may passin hashed dentries for open.
682 alias = ll_splice_alias(inode, *de);
684 GOTO(out, rc = PTR_ERR(alias));
688 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
689 /* we have lookup look - unhide dentry */
690 if (bits & MDS_INODELOCK_LOOKUP)
691 d_lustre_revalidate(*de);
692 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
694 * If file was created on the server, the dentry is revalidated
695 * in ll_create_it if the lock allows for it.
697 /* Check that parent has UPDATE lock. */
698 struct lookup_intent parent_it = {
700 .it_lock_handle = 0 };
701 struct lu_fid fid = ll_i2info(parent)->lli_fid;
703 /* If it is striped directory, get the real stripe parent */
704 if (unlikely(ll_dir_striped(parent))) {
705 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
706 ll_i2info(parent)->lli_lsm_md,
708 (*de)->d_name.len, &fid);
713 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
715 d_lustre_revalidate(*de);
716 ll_intent_release(&parent_it);
720 if (it_disposition(it, DISP_OPEN_CREATE)) {
721 ll_stats_ops_tally(ll_i2sbi(parent), LPROC_LL_MKNOD,
722 ktime_us_delta(ktime_get(), kstart));
728 if (rc != 0 && it->it_op & IT_OPEN) {
729 ll_intent_drop_lock(it);
730 ll_open_cleanup((*de)->d_sb, request);
736 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
737 struct lookup_intent *it,
738 void **secctx, __u32 *secctxlen,
739 struct pcc_create_attach *pca)
741 ktime_t kstart = ktime_get();
742 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
743 struct dentry *save = dentry, *retval;
744 struct ptlrpc_request *req = NULL;
745 struct md_op_data *op_data = NULL;
746 struct lov_user_md *lum = NULL;
749 char secctx_name[XATTR_NAME_MAX + 1];
753 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
754 RETURN(ERR_PTR(-ENAMETOOLONG));
756 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
757 dentry->d_name.len, dentry->d_name.name,
758 PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
760 if (d_mountpoint(dentry))
761 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
763 if (it == NULL || it->it_op == IT_GETXATTR)
766 if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
767 rc = ll_statahead(parent, &dentry, 0);
769 RETURN(dentry == save ? NULL : dentry);
772 if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE &&
773 dentry->d_sb->s_flags & SB_RDONLY)
774 RETURN(ERR_PTR(-EROFS));
776 if (it->it_op & IT_CREAT)
777 opc = LUSTRE_OPC_CREATE;
779 opc = LUSTRE_OPC_ANY;
781 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
782 dentry->d_name.len, 0, opc, NULL);
784 GOTO(out, retval = ERR_CAST(op_data));
786 /* enforce umask if acl disabled or MDS doesn't support umask */
787 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
788 it->it_create_mode &= ~current_umask();
790 if (it->it_op & IT_CREAT &&
791 ll_i2sbi(parent)->ll_flags & LL_SBI_FILE_SECCTX) {
792 rc = ll_dentry_init_security(dentry, it->it_create_mode,
794 &op_data->op_file_secctx_name,
795 &op_data->op_file_secctx,
796 &op_data->op_file_secctx_size);
798 GOTO(out, retval = ERR_PTR(rc));
800 *secctx = op_data->op_file_secctx;
801 if (secctxlen != NULL)
802 *secctxlen = op_data->op_file_secctx_size;
806 if (secctxlen != NULL)
810 /* ask for security context upon intent */
811 if (it->it_op & (IT_LOOKUP | IT_GETATTR | IT_OPEN)) {
812 /* get name of security xattr to request to server */
813 rc = ll_listsecurity(parent, secctx_name,
814 sizeof(secctx_name));
816 CDEBUG(D_SEC, "cannot get security xattr name for "
818 PFID(ll_inode2fid(parent)), rc);
820 op_data->op_file_secctx_name = secctx_name;
821 op_data->op_file_secctx_name_size = rc;
822 CDEBUG(D_SEC, "'%.*s' is security xattr for "DFID"\n",
823 rc, secctx_name, PFID(ll_inode2fid(parent)));
827 if (pca && pca->pca_dataset) {
828 struct pcc_dataset *dataset = pca->pca_dataset;
832 GOTO(out, retval = ERR_PTR(-ENOMEM));
834 lum->lmm_magic = LOV_USER_MAGIC_V1;
835 lum->lmm_pattern = LOV_PATTERN_F_RELEASED | LOV_PATTERN_RAID0;
836 op_data->op_data = lum;
837 op_data->op_data_size = sizeof(*lum);
838 op_data->op_archive_id = dataset->pccd_rwid;
840 rc = obd_fid_alloc(NULL, ll_i2mdexp(parent), &op_data->op_fid2,
843 GOTO(out, retval = ERR_PTR(rc));
845 rc = pcc_inode_create(parent->i_sb, dataset, &op_data->op_fid2,
848 GOTO(out, retval = ERR_PTR(rc));
850 it->it_flags |= MDS_OPEN_PCC;
853 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
854 &ll_md_blocking_ast, 0);
855 /* If the MDS allows the client to chgrp (CFS_SETGRP_PERM), but the
856 * client does not know which suppgid should be sent to the MDS, or
857 * some other(s) changed the target file's GID after this RPC sent
858 * to the MDS with the suppgid as the original GID, then we should
859 * try again with right suppgid. */
860 if (rc == -EACCES && it->it_op & IT_OPEN &&
861 it_disposition(it, DISP_OPEN_DENY)) {
862 struct mdt_body *body;
864 LASSERT(req != NULL);
866 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
867 if (op_data->op_suppgids[0] == body->mbo_gid ||
868 op_data->op_suppgids[1] == body->mbo_gid ||
869 !in_group_p(make_kgid(&init_user_ns, body->mbo_gid)))
870 GOTO(out, retval = ERR_PTR(-EACCES));
872 fid_zero(&op_data->op_fid2);
873 op_data->op_suppgids[1] = body->mbo_gid;
874 ptlrpc_req_finished(req);
876 ll_intent_release(it);
877 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
878 &ll_md_blocking_ast, 0);
882 GOTO(out, retval = ERR_PTR(rc));
884 /* dir layout may change */
885 ll_unlock_md_op_lsm(op_data);
886 rc = ll_lookup_it_finish(req, it, parent, &dentry,
887 secctx != NULL ? *secctx : NULL,
888 secctxlen != NULL ? *secctxlen : 0,
891 ll_intent_release(it);
892 GOTO(out, retval = ERR_PTR(rc));
895 if ((it->it_op & IT_OPEN) && dentry->d_inode &&
896 !S_ISREG(dentry->d_inode->i_mode) &&
897 !S_ISDIR(dentry->d_inode->i_mode)) {
898 ll_release_openhandle(dentry, it);
900 ll_lookup_finish_locks(it, dentry);
902 GOTO(out, retval = (dentry == save) ? NULL : dentry);
905 if (op_data != NULL && !IS_ERR(op_data)) {
906 if (secctx != NULL && secctxlen != NULL) {
907 /* caller needs sec ctx info, so reset it in op_data to
908 * prevent it from being freed */
909 op_data->op_file_secctx = NULL;
910 op_data->op_file_secctx_size = 0;
912 ll_finish_md_op_data(op_data);
918 ptlrpc_req_finished(req);
922 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
925 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
928 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), flags=%u\n",
929 dentry->d_name.len, dentry->d_name.name,
930 PFID(ll_inode2fid(parent)), parent, flags);
933 * Optimize away (CREATE && !OPEN). Let .create handle the race.
934 * but only if we have write permissions there, otherwise we need
935 * to proceed with lookup. LU-4185
937 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
938 (inode_permission(parent, MAY_WRITE | MAY_EXEC) == 0))
941 if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
945 de = ll_lookup_it(parent, dentry, itp, NULL, NULL, NULL);
948 ll_intent_release(itp);
953 #ifdef FMODE_CREATED /* added in Linux v4.18-rc1-20-g73a09dd */
954 # define ll_is_opened(o, f) ((f)->f_mode & FMODE_OPENED)
955 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL)
957 # define ll_set_created(o, f) \
959 (f)->f_mode |= FMODE_CREATED; \
963 # define ll_is_opened(o, f) (*(o))
964 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL, (o))
965 # define ll_last_arg , int *opened
966 # define ll_set_created(o, f) \
968 *(o) |= FILE_CREATED; \
974 * For cached negative dentry and new dentry, handle lookup/create/open
977 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
978 struct file *file, unsigned open_flags,
979 umode_t mode ll_last_arg)
981 struct lookup_intent *it;
983 long long lookup_flags = LOOKUP_OPEN;
986 struct ll_sb_info *sbi;
987 struct pcc_create_attach pca = { NULL, NULL };
992 "VFS Op:name=%.*s, dir="DFID"(%p), file %p, open_flags %x, mode %x opened %d\n",
993 dentry->d_name.len, dentry->d_name.name,
994 PFID(ll_inode2fid(dir)), dir, file, open_flags, mode,
995 ll_is_opened(opened, file));
997 /* Only negative dentries enter here */
998 LASSERT(dentry->d_inode == NULL);
1000 if (!d_unhashed(dentry)) {
1001 /* A valid negative dentry that just passed revalidation,
1002 * there's little point to try and open it server-side,
1003 * even though there's a minuscule chance it might succeed.
1004 * Either way it's a valid race to just return -ENOENT here.
1006 if (!(open_flags & O_CREAT))
1009 /* Otherwise we just unhash it to be rehashed afresh via
1010 * lookup if necessary
1015 OBD_ALLOC(it, sizeof(*it));
1019 it->it_op = IT_OPEN;
1020 if (open_flags & O_CREAT) {
1021 it->it_op |= IT_CREAT;
1022 lookup_flags |= LOOKUP_CREATE;
1023 sbi = ll_i2sbi(dir);
1024 /* Volatile file is used for HSM restore, so do not use PCC */
1025 if (!filename_is_volatile(dentry->d_name.name,
1026 dentry->d_name.len, NULL)) {
1027 struct pcc_matcher item;
1028 struct pcc_dataset *dataset;
1030 item.pm_uid = from_kuid(&init_user_ns, current_uid());
1031 item.pm_gid = from_kgid(&init_user_ns, current_gid());
1032 item.pm_projid = ll_i2info(dir)->lli_projid;
1033 item.pm_name = &dentry->d_name;
1034 dataset = pcc_dataset_match_get(&sbi->ll_pcc_super,
1036 pca.pca_dataset = dataset;
1039 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
1040 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
1041 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1043 /* Dentry added to dcache tree in ll_lookup_it */
1044 de = ll_lookup_it(dir, dentry, it, &secctx, &secctxlen, &pca);
1047 else if (de != NULL)
1050 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1053 if (it_disposition(it, DISP_OPEN_CREATE)) {
1054 /* Dentry instantiated in ll_create_it. */
1055 rc = ll_create_it(dir, dentry, it, secctx, secctxlen);
1056 security_release_secctx(secctx, secctxlen);
1058 /* We dget in ll_splice_alias. */
1064 rc = pcc_inode_create_fini(dentry->d_inode, &pca);
1068 GOTO(out_release, rc);
1071 ll_set_created(opened, file);
1073 /* Open the file with O_CREAT, but the file already
1074 * existed on MDT. This may happend in the case that
1075 * the LOOKUP ibits lock is revoked and the
1076 * corresponding dentry cache is deleted.
1077 * i.e. In the current Lustre, the truncate operation
1078 * will revoke the LOOKUP ibits lock, and the file
1079 * dentry cache will be invalidated. The following open
1080 * with O_CREAT flag will call into ->atomic_open, the
1081 * file was wrongly though as newly created file and
1082 * try to auto cache the file. So after client knows it
1083 * is not a DISP_OPEN_CREATE, it should cleanup the
1084 * already created PCC copy.
1086 pcc_create_attach_cleanup(dir->i_sb, &pca);
1089 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN)) {
1091 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1092 /* We cannot call open here as it might
1093 * deadlock. This case is unreachable in
1094 * practice because of OBD_CONNECT_NODEVOH. */
1095 rc = finish_no_open(file, de);
1097 file->private_data = it;
1098 rc = ll_finish_open(file, dentry, opened);
1099 /* We dget in ll_splice_alias. finish_open takes
1100 * care of dget for fd open.
1106 rc = finish_no_open(file, de);
1109 pcc_create_attach_cleanup(dir->i_sb, &pca);
1113 ll_intent_release(it);
1114 OBD_FREE(it, sizeof(*it));
1119 /* We depend on "mode" being set with the proper file type/umask by now */
1120 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
1122 struct inode *inode = NULL;
1123 struct ptlrpc_request *request = NULL;
1124 struct ll_sb_info *sbi = ll_i2sbi(dir);
1128 LASSERT(it && it->it_disposition);
1130 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
1131 request = it->it_request;
1132 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
1133 rc = ll_prep_inode(&inode, request, dir->i_sb, it);
1135 GOTO(out, inode = ERR_PTR(rc));
1137 /* Pause to allow for a race with concurrent access by fid */
1138 OBD_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_NODE_PAUSE, cfs_fail_val);
1140 /* We asked for a lock on the directory, but were granted a
1141 * lock on the inode. Since we finally have an inode pointer,
1142 * stuff it in the lock. */
1143 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
1144 PFID(ll_inode2fid(inode)), inode);
1145 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
1148 ptlrpc_req_finished(request);
1153 * By the time this is called, we already have created the directory cache
1154 * entry for the new file, but it is so far negative - it has no inode.
1156 * We defer creating the OBD object(s) until open, to keep the intent and
1157 * non-intent code paths similar, and also because we do not have the MDS
1158 * inode number before calling ll_create_node() (which is needed for LOV),
1159 * so we would need to do yet another RPC to the MDS to store the LOV EA
1160 * data on the MDS. If needed, we would pass the PACKED lmm as data and
1161 * lmm_size in datalen (the MDS still has code which will handle that).
1163 * If the create succeeds, we fill in the inode information
1164 * with d_instantiate().
1166 static int ll_create_it(struct inode *dir, struct dentry *dentry,
1167 struct lookup_intent *it,
1168 void *secctx, __u32 secctxlen)
1170 struct inode *inode;
1175 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
1176 dentry->d_name.len, dentry->d_name.name,
1177 PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
1179 rc = it_open_error(DISP_OPEN_CREATE, it);
1183 inode = ll_create_node(dir, it);
1185 RETURN(PTR_ERR(inode));
1187 if ((ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX) &&
1190 /* must be done before d_instantiate, because it calls
1191 * security_d_instantiate, which means a getxattr if security
1192 * context is not set yet */
1193 rc = security_inode_notifysecctx(inode, secctx, secctxlen);
1194 inode_unlock(inode);
1199 d_instantiate(dentry, inode);
1201 if (!(ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX)) {
1202 rc = ll_inode_init_security(dentry, inode, dir);
1207 ll_set_lock_data(ll_i2sbi(dir)->ll_md_exp, inode, it, &bits);
1208 if (bits & MDS_INODELOCK_LOOKUP)
1209 d_lustre_revalidate(dentry);
1214 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
1216 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
1220 if (body->mbo_valid & OBD_MD_FLMTIME &&
1221 body->mbo_mtime > inode->i_mtime.tv_sec) {
1223 "setting fid " DFID " mtime from %lld to %llu\n",
1224 PFID(ll_inode2fid(inode)),
1225 (s64)inode->i_mtime.tv_sec, body->mbo_mtime);
1226 inode->i_mtime.tv_sec = body->mbo_mtime;
1229 if (body->mbo_valid & OBD_MD_FLCTIME &&
1230 body->mbo_ctime > inode->i_ctime.tv_sec)
1231 inode->i_ctime.tv_sec = body->mbo_ctime;
1234 static int ll_new_node(struct inode *dir, struct dentry *dchild,
1235 const char *tgt, umode_t mode, int rdev, __u32 opc)
1237 struct qstr *name = &dchild->d_name;
1238 struct ptlrpc_request *request = NULL;
1239 struct md_op_data *op_data;
1240 struct inode *inode = NULL;
1241 struct ll_sb_info *sbi = ll_i2sbi(dir);
1246 if (unlikely(tgt != NULL))
1247 tgt_len = strlen(tgt) + 1;
1250 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1251 name->len, 0, opc, NULL);
1252 if (IS_ERR(op_data))
1253 GOTO(err_exit, err = PTR_ERR(op_data));
1255 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1256 err = ll_dentry_init_security(dchild, mode, &dchild->d_name,
1257 &op_data->op_file_secctx_name,
1258 &op_data->op_file_secctx,
1259 &op_data->op_file_secctx_size);
1261 GOTO(err_exit, err);
1264 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
1265 from_kuid(&init_user_ns, current_fsuid()),
1266 from_kgid(&init_user_ns, current_fsgid()),
1267 cfs_curproc_cap_pack(), rdev, &request);
1268 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 58, 0)
1270 * server < 2.12.58 doesn't pack default LMV in intent_getattr reply,
1271 * fetch default LMV here.
1273 if (unlikely(err == -EREMOTE)) {
1274 struct ll_inode_info *lli = ll_i2info(dir);
1275 struct lmv_user_md *lum;
1279 ptlrpc_req_finished(request);
1282 err2 = ll_dir_getstripe(dir, (void **)&lum, &lumsize, &request,
1283 OBD_MD_DEFAULT_MEA);
1284 ll_finish_md_op_data(op_data);
1287 struct lustre_md md = { NULL };
1289 md.body = req_capsule_server_get(&request->rq_pill,
1292 GOTO(err_exit, err = -EPROTO);
1294 OBD_ALLOC_PTR(md.default_lmv);
1295 if (!md.default_lmv)
1296 GOTO(err_exit, err = -ENOMEM);
1298 md.default_lmv->lsm_md_magic = lum->lum_magic;
1299 md.default_lmv->lsm_md_stripe_count =
1300 lum->lum_stripe_count;
1301 md.default_lmv->lsm_md_master_mdt_index =
1302 lum->lum_stripe_offset;
1303 md.default_lmv->lsm_md_hash_type = lum->lum_hash_type;
1305 err = ll_update_inode(dir, &md);
1306 md_free_lustre_md(sbi->ll_md_exp, &md);
1308 GOTO(err_exit, err);
1309 } else if (err2 == -ENODATA && lli->lli_default_lsm_md) {
1311 * If there are no default stripe EA on the MDT, but the
1312 * client has default stripe, then it probably means
1313 * default stripe EA has just been deleted.
1315 down_write(&lli->lli_lsm_sem);
1316 if (lli->lli_default_lsm_md)
1317 OBD_FREE_PTR(lli->lli_default_lsm_md);
1318 lli->lli_default_lsm_md = NULL;
1319 up_write(&lli->lli_lsm_sem);
1321 GOTO(err_exit, err);
1324 ptlrpc_req_finished(request);
1331 GOTO(err_exit, err);
1333 ll_update_times(request, dir);
1335 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_NEWNODE_PAUSE, cfs_fail_val);
1337 err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
1339 GOTO(err_exit, err);
1341 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1343 /* must be done before d_instantiate, because it calls
1344 * security_d_instantiate, which means a getxattr if security
1345 * context is not set yet */
1346 err = security_inode_notifysecctx(inode,
1347 op_data->op_file_secctx,
1348 op_data->op_file_secctx_size);
1349 inode_unlock(inode);
1351 GOTO(err_exit, err);
1354 d_instantiate(dchild, inode);
1356 if (!(sbi->ll_flags & LL_SBI_FILE_SECCTX)) {
1357 err = ll_inode_init_security(dchild, inode, dir);
1359 GOTO(err_exit, err);
1364 if (request != NULL)
1365 ptlrpc_req_finished(request);
1367 if (!IS_ERR_OR_NULL(op_data))
1368 ll_finish_md_op_data(op_data);
1373 static int ll_mknod(struct inode *dir, struct dentry *dchild, umode_t mode,
1376 struct qstr *name = &dchild->d_name;
1377 ktime_t kstart = ktime_get();
1381 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p) mode %o dev %x\n",
1382 name->len, name->name, PFID(ll_inode2fid(dir)), dir,
1385 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1386 mode &= ~current_umask();
1388 switch (mode & S_IFMT) {
1397 err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
1408 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD,
1409 ktime_us_delta(ktime_get(), kstart));
1415 * Plain create. Intent create is handled in atomic_open.
1417 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1418 umode_t mode, bool want_excl)
1420 ktime_t kstart = ktime_get();
1423 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1425 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), "
1426 "flags=%u, excl=%d\n", dentry->d_name.len,
1427 dentry->d_name.name, PFID(ll_inode2fid(dir)),
1428 dir, mode, want_excl);
1430 /* Using mknod(2) to create a regular file is designed to not recognize
1431 * volatile file name, so we use ll_mknod() here. */
1432 rc = ll_mknod(dir, dentry, mode, 0);
1434 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, unhashed %d\n",
1435 dentry->d_name.len, dentry->d_name.name, d_unhashed(dentry));
1438 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE,
1439 ktime_us_delta(ktime_get(), kstart));
1444 static int ll_symlink(struct inode *dir, struct dentry *dchild,
1445 const char *oldpath)
1447 struct qstr *name = &dchild->d_name;
1448 ktime_t kstart = ktime_get();
1452 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), target=%.*s\n",
1453 name->len, name->name, PFID(ll_inode2fid(dir)),
1454 dir, 3000, oldpath);
1456 err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO, 0,
1457 LUSTRE_OPC_SYMLINK);
1460 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK,
1461 ktime_us_delta(ktime_get(), kstart));
1466 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1467 struct dentry *new_dentry)
1469 struct inode *src = old_dentry->d_inode;
1470 struct qstr *name = &new_dentry->d_name;
1471 struct ll_sb_info *sbi = ll_i2sbi(dir);
1472 struct ptlrpc_request *request = NULL;
1473 struct md_op_data *op_data;
1474 ktime_t kstart = ktime_get();
1478 CDEBUG(D_VFSTRACE, "VFS Op: inode="DFID"(%p), dir="DFID"(%p), "
1479 "target=%.*s\n", PFID(ll_inode2fid(src)), src,
1480 PFID(ll_inode2fid(dir)), dir, name->len, name->name);
1482 op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
1483 0, LUSTRE_OPC_ANY, NULL);
1484 if (IS_ERR(op_data))
1485 RETURN(PTR_ERR(op_data));
1487 err = md_link(sbi->ll_md_exp, op_data, &request);
1488 ll_finish_md_op_data(op_data);
1492 ll_update_times(request, dir);
1493 ll_stats_ops_tally(sbi, LPROC_LL_LINK,
1494 ktime_us_delta(ktime_get(), kstart));
1497 ptlrpc_req_finished(request);
1501 static int ll_mkdir(struct inode *dir, struct dentry *dchild, umode_t mode)
1503 struct qstr *name = &dchild->d_name;
1504 ktime_t kstart = ktime_get();
1508 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1509 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1511 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1512 mode &= ~current_umask();
1514 mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
1516 err = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1518 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR,
1519 ktime_us_delta(ktime_get(), kstart));
1524 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1526 struct qstr *name = &dchild->d_name;
1527 struct ptlrpc_request *request = NULL;
1528 struct md_op_data *op_data;
1529 ktime_t kstart = ktime_get();
1534 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1535 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1537 if (unlikely(d_mountpoint(dchild)))
1540 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1541 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1542 if (IS_ERR(op_data))
1543 RETURN(PTR_ERR(op_data));
1545 if (dchild->d_inode != NULL)
1546 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1548 op_data->op_fid2 = op_data->op_fid3;
1549 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1550 ll_finish_md_op_data(op_data);
1552 ll_update_times(request, dir);
1554 ptlrpc_req_finished(request);
1556 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1557 ktime_us_delta(ktime_get(), kstart));
1564 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
1566 struct ptlrpc_request *request = NULL;
1567 struct md_op_data *op_data;
1568 ktime_t kstart = ktime_get();
1572 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1573 namelen, name, PFID(ll_inode2fid(dir)), dir);
1575 op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
1576 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1577 if (IS_ERR(op_data))
1578 RETURN(PTR_ERR(op_data));
1579 op_data->op_cli_flags |= CLI_RM_ENTRY;
1580 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1581 ll_finish_md_op_data(op_data);
1583 ll_update_times(request, dir);
1585 ptlrpc_req_finished(request);
1587 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1588 ktime_us_delta(ktime_get(), kstart));
1592 static int ll_unlink(struct inode *dir, struct dentry *dchild)
1594 struct qstr *name = &dchild->d_name;
1595 struct ptlrpc_request *request = NULL;
1596 struct md_op_data *op_data;
1597 struct mdt_body *body;
1598 ktime_t kstart = ktime_get();
1603 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1604 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1607 * XXX: unlink bind mountpoint maybe call to here,
1608 * just check it as vfs_unlink does.
1610 if (unlikely(d_mountpoint(dchild)))
1613 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
1614 LUSTRE_OPC_ANY, NULL);
1615 if (IS_ERR(op_data))
1616 RETURN(PTR_ERR(op_data));
1618 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1619 /* notify lower layer if inode has dirty pages */
1620 if (S_ISREG(dchild->d_inode->i_mode) &&
1621 ll_i2info(dchild->d_inode)->lli_clob &&
1622 dirty_cnt(dchild->d_inode))
1623 op_data->op_cli_flags |= CLI_DIRTY_DATA;
1624 op_data->op_fid2 = op_data->op_fid3;
1625 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1626 ll_finish_md_op_data(op_data);
1631 * The server puts attributes in on the last unlink, use them to update
1632 * the link count so the inode can be freed immediately.
1634 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1635 if (body->mbo_valid & OBD_MD_FLNLINK)
1636 set_nlink(dchild->d_inode, body->mbo_nlink);
1638 ll_update_times(request, dir);
1641 ptlrpc_req_finished(request);
1643 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK,
1644 ktime_us_delta(ktime_get(), kstart));
1648 static int ll_rename(struct inode *src, struct dentry *src_dchild,
1649 struct inode *tgt, struct dentry *tgt_dchild
1650 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1651 , unsigned int flags
1655 struct qstr *src_name = &src_dchild->d_name;
1656 struct qstr *tgt_name = &tgt_dchild->d_name;
1657 struct ptlrpc_request *request = NULL;
1658 struct ll_sb_info *sbi = ll_i2sbi(src);
1659 struct md_op_data *op_data;
1660 ktime_t kstart = ktime_get();
1664 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1669 CDEBUG(D_VFSTRACE, "VFS Op:oldname=%.*s, src_dir="DFID
1670 "(%p), newname=%.*s, tgt_dir="DFID"(%p)\n",
1671 src_name->len, src_name->name,
1672 PFID(ll_inode2fid(src)), src, tgt_name->len,
1673 tgt_name->name, PFID(ll_inode2fid(tgt)), tgt);
1675 if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
1678 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1679 LUSTRE_OPC_ANY, NULL);
1680 if (IS_ERR(op_data))
1681 RETURN(PTR_ERR(op_data));
1683 if (src_dchild->d_inode != NULL)
1684 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1686 if (tgt_dchild->d_inode != NULL)
1687 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1689 err = md_rename(sbi->ll_md_exp, op_data,
1690 src_name->name, src_name->len,
1691 tgt_name->name, tgt_name->len, &request);
1692 ll_finish_md_op_data(op_data);
1694 ll_update_times(request, src);
1695 ll_update_times(request, tgt);
1698 ptlrpc_req_finished(request);
1701 d_move(src_dchild, tgt_dchild);
1702 ll_stats_ops_tally(sbi, LPROC_LL_RENAME,
1703 ktime_us_delta(ktime_get(), kstart));
1709 const struct inode_operations ll_dir_inode_operations = {
1711 .atomic_open = ll_atomic_open,
1712 .lookup = ll_lookup_nd,
1713 .create = ll_create_nd,
1714 /* We need all these non-raw things for NFSD, to not patch it. */
1715 .unlink = ll_unlink,
1718 .symlink = ll_symlink,
1720 .rename = ll_rename,
1721 .setattr = ll_setattr,
1722 .getattr = ll_getattr,
1723 .permission = ll_inode_permission,
1724 #ifdef HAVE_IOP_XATTR
1725 .setxattr = ll_setxattr,
1726 .getxattr = ll_getxattr,
1727 .removexattr = ll_removexattr,
1729 .listxattr = ll_listxattr,
1730 .get_acl = ll_get_acl,
1731 #ifdef HAVE_IOP_SET_ACL
1732 .set_acl = ll_set_acl,
1736 const struct inode_operations ll_special_inode_operations = {
1737 .setattr = ll_setattr,
1738 .getattr = ll_getattr,
1739 .permission = ll_inode_permission,
1740 #ifdef HAVE_IOP_XATTR
1741 .setxattr = ll_setxattr,
1742 .getxattr = ll_getxattr,
1743 .removexattr = ll_removexattr,
1745 .listxattr = ll_listxattr,
1746 .get_acl = ll_get_acl,
1747 #ifdef HAVE_IOP_SET_ACL
1748 .set_acl = ll_set_acl,