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;
160 DECLARE_LL_D_HLIST_NODE_PTR(p);
162 spin_lock(&dir->i_lock);
163 ll_d_hlist_for_each_entry(dentry, p, &dir->i_dentry) {
164 spin_lock(&dentry->d_lock);
165 if (!list_empty(&dentry->d_subdirs)) {
166 struct dentry *child;
168 list_for_each_entry_safe(child, tmp_subdir,
171 if (child->d_inode == NULL)
172 d_lustre_invalidate(child, 1);
175 spin_unlock(&dentry->d_lock);
177 spin_unlock(&dir->i_lock);
180 int ll_test_inode_by_fid(struct inode *inode, void *opaque)
182 return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
185 static int ll_dom_lock_cancel(struct inode *inode, struct ldlm_lock *lock)
188 struct ll_inode_info *lli = ll_i2info(inode);
193 if (!lli->lli_clob) {
194 /* due to DoM read on open, there may exist pages for Lustre
195 * regular file even though cl_object is not set up yet. */
196 truncate_inode_pages(inode->i_mapping, 0);
200 env = cl_env_get(&refcheck);
202 RETURN(PTR_ERR(env));
204 /* reach MDC layer to flush data under the DoM ldlm lock */
205 rc = cl_object_flush(env, lli->lli_clob, lock);
206 if (rc == -ENODATA) {
207 CDEBUG(D_INODE, "inode "DFID" layout has no DoM stripe\n",
208 PFID(ll_inode2fid(inode)));
209 /* most likely result of layout change, do nothing */
213 cl_env_put(env, &refcheck);
217 static void ll_lock_cancel_bits(struct ldlm_lock *lock, __u64 to_cancel)
219 struct inode *inode = ll_inode_from_resource_lock(lock);
220 struct ll_inode_info *lli;
221 __u64 bits = to_cancel;
227 /* That means the inode is evicted most likely and may cause
228 * the skipping of lock cleanups below, so print the message
231 if (lock->l_resource->lr_lvb_inode)
233 "can't take inode for the lock (%sevicted)\n",
234 lock->l_resource->lr_lvb_inode->i_state &
235 I_FREEING ? "" : "not ");
239 if (!fid_res_name_eq(ll_inode2fid(inode),
240 &lock->l_resource->lr_name)) {
241 LDLM_ERROR(lock, "data mismatch with object "DFID"(%p)",
242 PFID(ll_inode2fid(inode)), inode);
246 if (bits & MDS_INODELOCK_XATTR) {
247 ll_xattr_cache_destroy(inode);
248 bits &= ~MDS_INODELOCK_XATTR;
251 /* For OPEN locks we differentiate between lock modes
252 * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
253 if (bits & MDS_INODELOCK_OPEN)
254 ll_have_md_lock(inode, &bits, lock->l_req_mode);
256 if (bits & MDS_INODELOCK_OPEN) {
259 switch (lock->l_req_mode) {
270 LDLM_ERROR(lock, "bad lock mode for OPEN lock");
274 ll_md_real_close(inode, fmode);
276 bits &= ~MDS_INODELOCK_OPEN;
279 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
280 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM |
282 ll_have_md_lock(inode, &bits, LCK_MINMODE);
284 if (bits & MDS_INODELOCK_DOM) {
285 rc = ll_dom_lock_cancel(inode, lock);
287 CDEBUG(D_INODE, "cannot flush DoM data "
289 PFID(ll_inode2fid(inode)), rc);
292 if (bits & MDS_INODELOCK_LAYOUT) {
293 struct cl_object_conf conf = {
294 .coc_opc = OBJECT_CONF_INVALIDATE,
298 rc = ll_layout_conf(inode, &conf);
300 CDEBUG(D_INODE, "cannot invalidate layout of "
302 PFID(ll_inode2fid(inode)), rc);
305 lli = ll_i2info(inode);
307 if (bits & MDS_INODELOCK_UPDATE)
308 ll_file_set_flag(lli, LLIF_UPDATE_ATIME);
310 if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
311 CDEBUG(D_INODE, "invalidating inode "DFID" lli = %p, "
312 "pfid = "DFID"\n", PFID(ll_inode2fid(inode)),
313 lli, PFID(&lli->lli_pfid));
314 truncate_inode_pages(inode->i_mapping, 0);
316 if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
317 struct inode *master_inode = NULL;
320 /* This is slave inode, since all of the child dentry
321 * is connected on the master inode, so we have to
322 * invalidate the negative children on master inode */
323 CDEBUG(D_INODE, "Invalidate s"DFID" m"DFID"\n",
324 PFID(ll_inode2fid(inode)), PFID(&lli->lli_pfid));
326 hash = cl_fid_build_ino(&lli->lli_pfid,
327 ll_need_32bit_api(ll_i2sbi(inode)));
329 /* Do not lookup the inode with ilookup5, otherwise
330 * it will cause dead lock,
331 * 1. Client1 send chmod req to the MDT0, then on MDT0,
332 * it enqueues master and all of its slaves lock,
333 * (mdt_attr_set() -> mdt_lock_slaves()), after gets
334 * master and stripe0 lock, it will send the enqueue
335 * req (for stripe1) to MDT1, then MDT1 finds the lock
336 * has been granted to client2. Then MDT1 sends blocking
338 * 2. At the same time, client2 tries to unlink
339 * the striped dir (rm -rf striped_dir), and during
340 * lookup, it will hold the master inode of the striped
341 * directory, whose inode state is NEW, then tries to
342 * revalidate all of its slaves, (ll_prep_inode()->
343 * ll_iget()->ll_read_inode2()-> ll_update_inode().).
344 * And it will be blocked on the server side because
346 * 3. Then the client get the blocking_ast req, cancel
347 * the lock, but being blocked if using ->ilookup5()),
348 * because master inode state is NEW. */
349 master_inode = ilookup5_nowait(inode->i_sb, hash,
350 ll_test_inode_by_fid,
351 (void *)&lli->lli_pfid);
353 ll_invalidate_negative_children(master_inode);
357 ll_invalidate_negative_children(inode);
361 if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
362 inode->i_sb->s_root != NULL &&
363 inode != inode->i_sb->s_root->d_inode)
364 ll_invalidate_aliases(inode);
366 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM))
367 forget_all_cached_acls(inode);
373 /* Check if the given lock may be downgraded instead of canceling and
374 * that convert is really needed. */
375 int ll_md_need_convert(struct ldlm_lock *lock)
377 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
379 __u64 wanted = lock->l_policy_data.l_inodebits.cancel_bits;
380 __u64 bits = lock->l_policy_data.l_inodebits.bits & ~wanted;
381 enum ldlm_mode mode = LCK_MINMODE;
383 if (!lock->l_conn_export ||
384 !exp_connect_lock_convert(lock->l_conn_export))
387 if (!wanted || !bits || ldlm_is_cancel(lock))
390 /* do not convert locks other than DOM for now */
391 if (!((bits | wanted) & MDS_INODELOCK_DOM))
394 /* We may have already remaining bits in some other lock so
395 * lock convert will leave us just extra lock for the same bit.
396 * Check if client has other lock with the same bits and the same
397 * or lower mode and don't convert if any.
399 switch (lock->l_req_mode) {
413 /* do not convert other modes */
417 /* is lock is too old to be converted? */
418 lock_res_and_lock(lock);
419 if (ktime_after(ktime_get(),
420 ktime_add(lock->l_last_used,
421 ktime_set(ns->ns_dirty_age_limit, 0)))) {
422 unlock_res_and_lock(lock);
425 unlock_res_and_lock(lock);
427 inode = ll_inode_from_resource_lock(lock);
428 ll_have_md_lock(inode, &bits, mode);
433 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *ld,
434 void *data, int flag)
436 struct lustre_handle lockh;
442 case LDLM_CB_BLOCKING:
444 __u64 cancel_flags = LCF_ASYNC;
446 /* if lock convert is not needed then still have to
447 * pass lock via ldlm_cli_convert() to keep all states
448 * correct, set cancel_bits to full lock bits to cause
449 * full cancel to happen.
451 if (!ll_md_need_convert(lock)) {
452 lock_res_and_lock(lock);
453 lock->l_policy_data.l_inodebits.cancel_bits =
454 lock->l_policy_data.l_inodebits.bits;
455 unlock_res_and_lock(lock);
457 rc = ldlm_cli_convert(lock, cancel_flags);
460 /* continue with cancel otherwise */
461 ldlm_lock2handle(lock, &lockh);
462 rc = ldlm_cli_cancel(&lockh, cancel_flags);
464 CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
469 case LDLM_CB_CANCELING:
471 __u64 to_cancel = lock->l_policy_data.l_inodebits.bits;
473 /* Nothing to do for non-granted locks */
474 if (!ldlm_is_granted(lock))
477 /* If 'ld' is supplied then bits to be cancelled are passed
478 * implicitly by lock converting and cancel_bits from 'ld'
479 * should be used. Otherwise full cancel is being performed
480 * and lock inodebits are used.
482 * Note: we cannot rely on cancel_bits in lock itself at this
483 * moment because they can be changed by concurrent thread,
484 * so ldlm_cli_inodebits_convert() pass cancel bits implicitly
488 /* partial bits cancel allowed only during convert */
489 LASSERT(ldlm_is_converting(lock));
490 /* mask cancel bits by lock bits so only no any unused
491 * bits are passed to ll_lock_cancel_bits()
493 to_cancel &= ld->l_policy_data.l_inodebits.cancel_bits;
495 ll_lock_cancel_bits(lock, to_cancel);
505 __u32 ll_i2suppgid(struct inode *i)
507 if (in_group_p(i->i_gid))
508 return (__u32)from_kgid(&init_user_ns, i->i_gid);
510 return (__u32) __kgid_val(INVALID_GID);
513 /* Pack the required supplementary groups into the supplied groups array.
514 * If we don't need to use the groups from the target inode(s) then we
515 * instead pack one or more groups from the user's supplementary group
516 * array in case it might be useful. Not needed if doing an MDS-side upcall. */
517 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
520 LASSERT(suppgids != NULL);
522 suppgids[0] = ll_i2suppgid(i1);
525 suppgids[1] = ll_i2suppgid(i2);
531 * try to reuse three types of dentry:
532 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
533 * by concurrent .revalidate).
534 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
535 * be cleared by others calling d_lustre_revalidate).
536 * 3. DISCONNECTED alias.
538 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
540 struct dentry *alias, *discon_alias, *invalid_alias;
541 DECLARE_LL_D_HLIST_NODE_PTR(p);
543 if (ll_d_hlist_empty(&inode->i_dentry))
546 discon_alias = invalid_alias = NULL;
548 spin_lock(&inode->i_lock);
549 ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry) {
550 LASSERT(alias != dentry);
552 spin_lock(&alias->d_lock);
553 if ((alias->d_flags & DCACHE_DISCONNECTED) &&
554 S_ISDIR(inode->i_mode))
555 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
556 discon_alias = alias;
557 else if (alias->d_parent == dentry->d_parent &&
558 alias->d_name.hash == dentry->d_name.hash &&
559 alias->d_name.len == dentry->d_name.len &&
560 memcmp(alias->d_name.name, dentry->d_name.name,
561 dentry->d_name.len) == 0)
562 invalid_alias = alias;
563 spin_unlock(&alias->d_lock);
568 alias = invalid_alias ?: discon_alias ?: NULL;
570 spin_lock(&alias->d_lock);
572 spin_unlock(&alias->d_lock);
574 spin_unlock(&inode->i_lock);
580 * Similar to d_splice_alias(), but lustre treats invalid alias
581 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
583 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
589 new = ll_find_alias(inode, de);
599 "Reuse dentry %p inode %p refc %d flags %#x\n",
600 new, new->d_inode, ll_d_count(new), new->d_flags);
608 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
609 de, de->d_inode, ll_d_count(de), de->d_flags);
613 static int ll_lookup_it_finish(struct ptlrpc_request *request,
614 struct lookup_intent *it,
615 struct inode *parent, struct dentry **de,
616 void *secctx, __u32 secctxlen,
619 struct inode *inode = NULL;
622 struct dentry *alias;
625 /* NB 1 request reference will be taken away by ll_intent_lock()
627 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
629 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
630 struct req_capsule *pill = &request->rq_pill;
631 struct mdt_body *body = req_capsule_server_get(pill,
634 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
638 if (it->it_op & IT_OPEN)
639 ll_dom_finish_open(inode, request, it);
641 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
643 /* We used to query real size from OSTs here, but actually
644 * this is not needed. For stat() calls size would be updated
645 * from subsequent do_revalidate()->ll_inode_revalidate_it() in
647 * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
648 * Everybody else who needs correct file size would call
649 * ll_glimpse_size or some equivalent themselves anyway.
653 /* If security context was returned by MDT, put it in
654 * inode now to save an extra getxattr from security hooks,
655 * and avoid deadlock.
657 if (body->mbo_valid & OBD_MD_SECCTX) {
658 secctx = req_capsule_server_get(pill, &RMF_FILE_SECCTX);
659 secctxlen = req_capsule_get_size(pill,
664 CDEBUG(D_SEC, "server returned security context"
666 PFID(ll_inode2fid(inode)));
669 if (secctx != NULL && secctxlen != 0) {
671 rc = security_inode_notifysecctx(inode, secctx,
675 CWARN("cannot set security context for "
677 PFID(ll_inode2fid(inode)), rc);
681 /* Only hash *de if it is unhashed (new dentry).
682 * Atoimc_open may passin hashed dentries for open.
684 alias = ll_splice_alias(inode, *de);
686 GOTO(out, rc = PTR_ERR(alias));
690 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
691 /* we have lookup look - unhide dentry */
692 if (bits & MDS_INODELOCK_LOOKUP)
693 d_lustre_revalidate(*de);
694 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
696 * If file was created on the server, the dentry is revalidated
697 * in ll_create_it if the lock allows for it.
699 /* Check that parent has UPDATE lock. */
700 struct lookup_intent parent_it = {
702 .it_lock_handle = 0 };
703 struct lu_fid fid = ll_i2info(parent)->lli_fid;
705 /* If it is striped directory, get the real stripe parent */
706 if (unlikely(ll_dir_striped(parent))) {
707 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
708 ll_i2info(parent)->lli_lsm_md,
710 (*de)->d_name.len, &fid);
715 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
717 d_lustre_revalidate(*de);
718 ll_intent_release(&parent_it);
722 if (it_disposition(it, DISP_OPEN_CREATE)) {
723 ll_stats_ops_tally(ll_i2sbi(parent), LPROC_LL_MKNOD,
724 ktime_us_delta(ktime_get(), kstart));
730 if (rc != 0 && it->it_op & IT_OPEN) {
731 ll_intent_drop_lock(it);
732 ll_open_cleanup((*de)->d_sb, request);
738 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
739 struct lookup_intent *it,
740 void **secctx, __u32 *secctxlen,
741 struct pcc_create_attach *pca)
743 ktime_t kstart = ktime_get();
744 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
745 struct dentry *save = dentry, *retval;
746 struct ptlrpc_request *req = NULL;
747 struct md_op_data *op_data = NULL;
748 struct lov_user_md *lum = NULL;
751 char secctx_name[XATTR_NAME_MAX + 1];
755 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
756 RETURN(ERR_PTR(-ENAMETOOLONG));
758 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
759 dentry->d_name.len, dentry->d_name.name,
760 PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
762 if (d_mountpoint(dentry))
763 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
765 if (it == NULL || it->it_op == IT_GETXATTR)
768 if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
769 rc = ll_statahead(parent, &dentry, 0);
771 RETURN(dentry == save ? NULL : dentry);
774 if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE &&
775 dentry->d_sb->s_flags & SB_RDONLY)
776 RETURN(ERR_PTR(-EROFS));
778 if (it->it_op & IT_CREAT)
779 opc = LUSTRE_OPC_CREATE;
781 opc = LUSTRE_OPC_ANY;
783 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
784 dentry->d_name.len, 0, opc, NULL);
786 GOTO(out, retval = ERR_CAST(op_data));
788 /* enforce umask if acl disabled or MDS doesn't support umask */
789 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
790 it->it_create_mode &= ~current_umask();
792 if (it->it_op & IT_CREAT &&
793 ll_i2sbi(parent)->ll_flags & LL_SBI_FILE_SECCTX) {
794 rc = ll_dentry_init_security(dentry, it->it_create_mode,
796 &op_data->op_file_secctx_name,
797 &op_data->op_file_secctx,
798 &op_data->op_file_secctx_size);
800 GOTO(out, retval = ERR_PTR(rc));
802 *secctx = op_data->op_file_secctx;
803 if (secctxlen != NULL)
804 *secctxlen = op_data->op_file_secctx_size;
808 if (secctxlen != NULL)
812 /* ask for security context upon intent */
813 if (it->it_op & (IT_LOOKUP | IT_GETATTR | IT_OPEN)) {
814 /* get name of security xattr to request to server */
815 rc = ll_listsecurity(parent, secctx_name,
816 sizeof(secctx_name));
818 CDEBUG(D_SEC, "cannot get security xattr name for "
820 PFID(ll_inode2fid(parent)), rc);
822 op_data->op_file_secctx_name = secctx_name;
823 op_data->op_file_secctx_name_size = rc;
824 CDEBUG(D_SEC, "'%.*s' is security xattr for "DFID"\n",
825 rc, secctx_name, PFID(ll_inode2fid(parent)));
829 if (pca && pca->pca_dataset) {
830 struct pcc_dataset *dataset = pca->pca_dataset;
834 GOTO(out, retval = ERR_PTR(-ENOMEM));
836 lum->lmm_magic = LOV_USER_MAGIC_V1;
837 lum->lmm_pattern = LOV_PATTERN_F_RELEASED | LOV_PATTERN_RAID0;
838 op_data->op_data = lum;
839 op_data->op_data_size = sizeof(*lum);
840 op_data->op_archive_id = dataset->pccd_rwid;
842 rc = obd_fid_alloc(NULL, ll_i2mdexp(parent), &op_data->op_fid2,
845 GOTO(out, retval = ERR_PTR(rc));
847 rc = pcc_inode_create(parent->i_sb, dataset, &op_data->op_fid2,
850 GOTO(out, retval = ERR_PTR(rc));
852 it->it_flags |= MDS_OPEN_PCC;
855 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
856 &ll_md_blocking_ast, 0);
857 /* If the MDS allows the client to chgrp (CFS_SETGRP_PERM), but the
858 * client does not know which suppgid should be sent to the MDS, or
859 * some other(s) changed the target file's GID after this RPC sent
860 * to the MDS with the suppgid as the original GID, then we should
861 * try again with right suppgid. */
862 if (rc == -EACCES && it->it_op & IT_OPEN &&
863 it_disposition(it, DISP_OPEN_DENY)) {
864 struct mdt_body *body;
866 LASSERT(req != NULL);
868 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
869 if (op_data->op_suppgids[0] == body->mbo_gid ||
870 op_data->op_suppgids[1] == body->mbo_gid ||
871 !in_group_p(make_kgid(&init_user_ns, body->mbo_gid)))
872 GOTO(out, retval = ERR_PTR(-EACCES));
874 fid_zero(&op_data->op_fid2);
875 op_data->op_suppgids[1] = body->mbo_gid;
876 ptlrpc_req_finished(req);
878 ll_intent_release(it);
879 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
880 &ll_md_blocking_ast, 0);
884 GOTO(out, retval = ERR_PTR(rc));
886 /* dir layout may change */
887 ll_unlock_md_op_lsm(op_data);
888 rc = ll_lookup_it_finish(req, it, parent, &dentry,
889 secctx != NULL ? *secctx : NULL,
890 secctxlen != NULL ? *secctxlen : 0,
893 ll_intent_release(it);
894 GOTO(out, retval = ERR_PTR(rc));
897 if ((it->it_op & IT_OPEN) && dentry->d_inode &&
898 !S_ISREG(dentry->d_inode->i_mode) &&
899 !S_ISDIR(dentry->d_inode->i_mode)) {
900 ll_release_openhandle(dentry, it);
902 ll_lookup_finish_locks(it, dentry);
904 GOTO(out, retval = (dentry == save) ? NULL : dentry);
907 if (op_data != NULL && !IS_ERR(op_data)) {
908 if (secctx != NULL && secctxlen != NULL) {
909 /* caller needs sec ctx info, so reset it in op_data to
910 * prevent it from being freed */
911 op_data->op_file_secctx = NULL;
912 op_data->op_file_secctx_size = 0;
914 ll_finish_md_op_data(op_data);
920 ptlrpc_req_finished(req);
924 #ifdef HAVE_IOP_ATOMIC_OPEN
925 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
928 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
931 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), flags=%u\n",
932 dentry->d_name.len, dentry->d_name.name,
933 PFID(ll_inode2fid(parent)), parent, flags);
936 * Optimize away (CREATE && !OPEN). Let .create handle the race.
937 * but only if we have write permissions there, otherwise we need
938 * to proceed with lookup. LU-4185
940 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
941 (inode_permission(parent, MAY_WRITE | MAY_EXEC) == 0))
944 if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
948 de = ll_lookup_it(parent, dentry, itp, NULL, NULL, NULL);
951 ll_intent_release(itp);
956 #ifdef FMODE_CREATED /* added in Linux v4.18-rc1-20-g73a09dd */
957 # define ll_is_opened(o, f) ((f)->f_mode & FMODE_OPENED)
958 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL)
960 # define ll_set_created(o, f) \
962 (f)->f_mode |= FMODE_CREATED; \
966 # define ll_is_opened(o, f) (*(o))
967 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL, (o))
968 # define ll_last_arg , int *opened
969 # define ll_set_created(o, f) \
971 *(o) |= FILE_CREATED; \
977 * For cached negative dentry and new dentry, handle lookup/create/open
980 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
981 struct file *file, unsigned open_flags,
982 umode_t mode ll_last_arg)
984 struct lookup_intent *it;
986 long long lookup_flags = LOOKUP_OPEN;
989 struct ll_sb_info *sbi;
990 struct pcc_create_attach pca = { NULL, NULL };
994 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), file %p,"
995 "open_flags %x, mode %x opened %d\n",
996 dentry->d_name.len, dentry->d_name.name,
997 PFID(ll_inode2fid(dir)), dir, file, open_flags, mode,
998 ll_is_opened(opened, file));
1000 /* Only negative dentries enter here */
1001 LASSERT(dentry->d_inode == NULL);
1003 if (!d_unhashed(dentry)) {
1004 /* A valid negative dentry that just passed revalidation,
1005 * there's little point to try and open it server-side,
1006 * even though there's a minuscule chance it might succeed.
1007 * Either way it's a valid race to just return -ENOENT here.
1009 if (!(open_flags & O_CREAT))
1012 /* Otherwise we just unhash it to be rehashed afresh via
1013 * lookup if necessary
1018 OBD_ALLOC(it, sizeof(*it));
1022 it->it_op = IT_OPEN;
1023 if (open_flags & O_CREAT) {
1024 it->it_op |= IT_CREAT;
1025 lookup_flags |= LOOKUP_CREATE;
1026 sbi = ll_i2sbi(dir);
1027 /* Volatile file is used for HSM restore, so do not use PCC */
1028 if (!filename_is_volatile(dentry->d_name.name,
1029 dentry->d_name.len, NULL)) {
1030 struct pcc_matcher item;
1031 struct pcc_dataset *dataset;
1033 item.pm_uid = from_kuid(&init_user_ns, current_uid());
1034 item.pm_gid = from_kgid(&init_user_ns, current_gid());
1035 item.pm_projid = ll_i2info(dir)->lli_projid;
1036 item.pm_name = &dentry->d_name;
1037 dataset = pcc_dataset_match_get(&sbi->ll_pcc_super,
1039 pca.pca_dataset = dataset;
1042 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
1043 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
1044 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1046 /* Dentry added to dcache tree in ll_lookup_it */
1047 de = ll_lookup_it(dir, dentry, it, &secctx, &secctxlen, &pca);
1050 else if (de != NULL)
1053 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1056 if (it_disposition(it, DISP_OPEN_CREATE)) {
1057 /* Dentry instantiated in ll_create_it. */
1058 rc = ll_create_it(dir, dentry, it, secctx, secctxlen);
1059 security_release_secctx(secctx, secctxlen);
1061 /* We dget in ll_splice_alias. */
1067 rc = pcc_inode_create_fini(dentry->d_inode, &pca);
1071 GOTO(out_release, rc);
1074 ll_set_created(opened, file);
1076 /* Open the file with O_CREAT, but the file already
1077 * existed on MDT. This may happend in the case that
1078 * the LOOKUP ibits lock is revoked and the
1079 * corresponding dentry cache is deleted.
1080 * i.e. In the current Lustre, the truncate operation
1081 * will revoke the LOOKUP ibits lock, and the file
1082 * dentry cache will be invalidated. The following open
1083 * with O_CREAT flag will call into ->atomic_open, the
1084 * file was wrongly though as newly created file and
1085 * try to auto cache the file. So after client knows it
1086 * is not a DISP_OPEN_CREATE, it should cleanup the
1087 * already created PCC copy.
1089 pcc_create_attach_cleanup(dir->i_sb, &pca);
1092 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN)) {
1094 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1095 /* We cannot call open here as it might
1096 * deadlock. This case is unreachable in
1097 * practice because of OBD_CONNECT_NODEVOH. */
1098 rc = finish_no_open(file, de);
1100 file->private_data = it;
1101 rc = ll_finish_open(file, dentry, opened);
1102 /* We dget in ll_splice_alias. finish_open takes
1103 * care of dget for fd open.
1109 rc = finish_no_open(file, de);
1112 pcc_create_attach_cleanup(dir->i_sb, &pca);
1116 ll_intent_release(it);
1117 OBD_FREE(it, sizeof(*it));
1122 #else /* !HAVE_IOP_ATOMIC_OPEN */
1123 static struct lookup_intent *
1124 ll_convert_intent(struct open_intent *oit, int lookup_flags, bool is_readonly)
1126 struct lookup_intent *it;
1130 return ERR_PTR(-ENOMEM);
1132 if (lookup_flags & LOOKUP_OPEN) {
1133 it->it_op = IT_OPEN;
1134 /* Avoid file creation for ro bind mount point(is_readonly) */
1135 if ((lookup_flags & LOOKUP_CREATE) && !is_readonly)
1136 it->it_op |= IT_CREAT;
1137 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
1138 it->it_flags = ll_namei_to_lookup_intent_flag(oit->flags &
1139 ~(is_readonly ? O_CREAT : 0));
1140 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1142 it->it_op = IT_GETATTR;
1148 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
1149 struct nameidata *nd)
1154 if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
1155 struct lookup_intent *it;
1157 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
1158 it = ll_d2d(dentry)->lld_it;
1159 ll_d2d(dentry)->lld_it = NULL;
1162 * Optimize away (CREATE && !OPEN). Let .create handle
1163 * the race. But only if we have write permissions
1164 * there, otherwise we need to proceed with lookup.
1167 if ((nd->flags & LOOKUP_CREATE) &&
1168 !(nd->flags & LOOKUP_OPEN) &&
1169 (inode_permission(parent,
1170 MAY_WRITE | MAY_EXEC) == 0))
1173 it = ll_convert_intent(&nd->intent.open, nd->flags,
1174 (nd->path.mnt->mnt_flags & MNT_READONLY) ||
1175 (nd->path.mnt->mnt_sb->s_flags & SB_RDONLY));
1177 RETURN((struct dentry *)it);
1180 de = ll_lookup_it(parent, dentry, it, NULL, NULL, NULL);
1183 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
1184 if (dentry->d_inode &&
1185 it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
1186 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1187 /* We cannot call open here as it might
1188 * deadlock. This case is unreachable in
1189 * practice because of
1190 * OBD_CONNECT_NODEVOH. */
1194 nd->intent.open.file->private_data = it;
1195 filp = lookup_instantiate_filp(nd,
1201 de = (struct dentry *)filp;
1204 } else if (it_disposition(it, DISP_OPEN_CREATE)) {
1205 /* XXX This can only reliably work on assumption
1206 * that there are NO hashed negative dentries.*/
1207 ll_d2d(dentry)->lld_it = it;
1208 it = NULL; /* Will be freed in ll_create_nd */
1209 /* We absolutely depend on ll_create_nd to be
1210 * called to not leak this intent and possible
1211 * data attached to it */
1216 ll_intent_release(it);
1217 OBD_FREE(it, sizeof(*it));
1220 de = ll_lookup_it(parent, dentry, NULL, NULL, NULL, NULL);
1225 #endif /* HAVE_IOP_ATOMIC_OPEN */
1227 /* We depend on "mode" being set with the proper file type/umask by now */
1228 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
1230 struct inode *inode = NULL;
1231 struct ptlrpc_request *request = NULL;
1232 struct ll_sb_info *sbi = ll_i2sbi(dir);
1236 LASSERT(it && it->it_disposition);
1238 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
1239 request = it->it_request;
1240 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
1241 rc = ll_prep_inode(&inode, request, dir->i_sb, it);
1243 GOTO(out, inode = ERR_PTR(rc));
1245 /* Pause to allow for a race with concurrent access by fid */
1246 OBD_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_NODE_PAUSE, cfs_fail_val);
1248 /* We asked for a lock on the directory, but were granted a
1249 * lock on the inode. Since we finally have an inode pointer,
1250 * stuff it in the lock. */
1251 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
1252 PFID(ll_inode2fid(inode)), inode);
1253 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
1256 ptlrpc_req_finished(request);
1261 * By the time this is called, we already have created the directory cache
1262 * entry for the new file, but it is so far negative - it has no inode.
1264 * We defer creating the OBD object(s) until open, to keep the intent and
1265 * non-intent code paths similar, and also because we do not have the MDS
1266 * inode number before calling ll_create_node() (which is needed for LOV),
1267 * so we would need to do yet another RPC to the MDS to store the LOV EA
1268 * data on the MDS. If needed, we would pass the PACKED lmm as data and
1269 * lmm_size in datalen (the MDS still has code which will handle that).
1271 * If the create succeeds, we fill in the inode information
1272 * with d_instantiate().
1274 static int ll_create_it(struct inode *dir, struct dentry *dentry,
1275 struct lookup_intent *it,
1276 void *secctx, __u32 secctxlen)
1278 struct inode *inode;
1283 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
1284 dentry->d_name.len, dentry->d_name.name,
1285 PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
1287 rc = it_open_error(DISP_OPEN_CREATE, it);
1291 inode = ll_create_node(dir, it);
1293 RETURN(PTR_ERR(inode));
1295 if ((ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX) &&
1298 /* must be done before d_instantiate, because it calls
1299 * security_d_instantiate, which means a getxattr if security
1300 * context is not set yet */
1301 rc = security_inode_notifysecctx(inode, secctx, secctxlen);
1302 inode_unlock(inode);
1307 d_instantiate(dentry, inode);
1309 if (!(ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX)) {
1310 rc = ll_inode_init_security(dentry, inode, dir);
1315 ll_set_lock_data(ll_i2sbi(dir)->ll_md_exp, inode, it, &bits);
1316 if (bits & MDS_INODELOCK_LOOKUP)
1317 d_lustre_revalidate(dentry);
1322 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
1324 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
1328 if (body->mbo_valid & OBD_MD_FLMTIME &&
1329 body->mbo_mtime > inode->i_mtime.tv_sec) {
1331 "setting fid " DFID " mtime from %lld to %llu\n",
1332 PFID(ll_inode2fid(inode)),
1333 (s64)inode->i_mtime.tv_sec, body->mbo_mtime);
1334 inode->i_mtime.tv_sec = body->mbo_mtime;
1337 if (body->mbo_valid & OBD_MD_FLCTIME &&
1338 body->mbo_ctime > inode->i_ctime.tv_sec)
1339 inode->i_ctime.tv_sec = body->mbo_ctime;
1342 static int ll_new_node(struct inode *dir, struct dentry *dchild,
1343 const char *tgt, umode_t mode, int rdev, __u32 opc)
1345 struct qstr *name = &dchild->d_name;
1346 struct ptlrpc_request *request = NULL;
1347 struct md_op_data *op_data;
1348 struct inode *inode = NULL;
1349 struct ll_sb_info *sbi = ll_i2sbi(dir);
1354 if (unlikely(tgt != NULL))
1355 tgt_len = strlen(tgt) + 1;
1358 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1359 name->len, 0, opc, NULL);
1360 if (IS_ERR(op_data))
1361 GOTO(err_exit, err = PTR_ERR(op_data));
1363 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1364 err = ll_dentry_init_security(dchild, mode, &dchild->d_name,
1365 &op_data->op_file_secctx_name,
1366 &op_data->op_file_secctx,
1367 &op_data->op_file_secctx_size);
1369 GOTO(err_exit, err);
1372 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
1373 from_kuid(&init_user_ns, current_fsuid()),
1374 from_kgid(&init_user_ns, current_fsgid()),
1375 cfs_curproc_cap_pack(), rdev, &request);
1376 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 58, 0)
1378 * server < 2.12.58 doesn't pack default LMV in intent_getattr reply,
1379 * fetch default LMV here.
1381 if (unlikely(err == -EREMOTE)) {
1382 struct ll_inode_info *lli = ll_i2info(dir);
1383 struct lmv_user_md *lum;
1387 ptlrpc_req_finished(request);
1390 err2 = ll_dir_getstripe(dir, (void **)&lum, &lumsize, &request,
1391 OBD_MD_DEFAULT_MEA);
1392 ll_finish_md_op_data(op_data);
1395 struct lustre_md md = { NULL };
1397 md.body = req_capsule_server_get(&request->rq_pill,
1400 GOTO(err_exit, err = -EPROTO);
1402 OBD_ALLOC_PTR(md.default_lmv);
1403 if (!md.default_lmv)
1404 GOTO(err_exit, err = -ENOMEM);
1406 md.default_lmv->lsm_md_magic = lum->lum_magic;
1407 md.default_lmv->lsm_md_stripe_count =
1408 lum->lum_stripe_count;
1409 md.default_lmv->lsm_md_master_mdt_index =
1410 lum->lum_stripe_offset;
1411 md.default_lmv->lsm_md_hash_type = lum->lum_hash_type;
1413 err = ll_update_inode(dir, &md);
1414 md_free_lustre_md(sbi->ll_md_exp, &md);
1416 GOTO(err_exit, err);
1417 } else if (err2 == -ENODATA && lli->lli_default_lsm_md) {
1419 * If there are no default stripe EA on the MDT, but the
1420 * client has default stripe, then it probably means
1421 * default stripe EA has just been deleted.
1423 down_write(&lli->lli_lsm_sem);
1424 if (lli->lli_default_lsm_md)
1425 OBD_FREE_PTR(lli->lli_default_lsm_md);
1426 lli->lli_default_lsm_md = NULL;
1427 up_write(&lli->lli_lsm_sem);
1429 GOTO(err_exit, err);
1432 ptlrpc_req_finished(request);
1439 GOTO(err_exit, err);
1441 ll_update_times(request, dir);
1443 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_NEWNODE_PAUSE, cfs_fail_val);
1445 err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
1447 GOTO(err_exit, err);
1449 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1451 /* must be done before d_instantiate, because it calls
1452 * security_d_instantiate, which means a getxattr if security
1453 * context is not set yet */
1454 err = security_inode_notifysecctx(inode,
1455 op_data->op_file_secctx,
1456 op_data->op_file_secctx_size);
1457 inode_unlock(inode);
1459 GOTO(err_exit, err);
1462 d_instantiate(dchild, inode);
1464 if (!(sbi->ll_flags & LL_SBI_FILE_SECCTX)) {
1465 err = ll_inode_init_security(dchild, inode, dir);
1467 GOTO(err_exit, err);
1472 if (request != NULL)
1473 ptlrpc_req_finished(request);
1475 if (!IS_ERR_OR_NULL(op_data))
1476 ll_finish_md_op_data(op_data);
1481 static int ll_mknod(struct inode *dir, struct dentry *dchild, ll_umode_t mode,
1484 struct qstr *name = &dchild->d_name;
1485 ktime_t kstart = ktime_get();
1489 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p) mode %o dev %x\n",
1490 name->len, name->name, PFID(ll_inode2fid(dir)), dir,
1493 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1494 mode &= ~current_umask();
1496 switch (mode & S_IFMT) {
1505 err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
1516 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD,
1517 ktime_us_delta(ktime_get(), kstart));
1522 #ifdef HAVE_IOP_ATOMIC_OPEN
1524 * Plain create. Intent create is handled in atomic_open.
1526 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1527 umode_t mode, bool want_excl)
1529 ktime_t kstart = ktime_get();
1532 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1534 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), "
1535 "flags=%u, excl=%d\n", dentry->d_name.len,
1536 dentry->d_name.name, PFID(ll_inode2fid(dir)),
1537 dir, mode, want_excl);
1539 /* Using mknod(2) to create a regular file is designed to not recognize
1540 * volatile file name, so we use ll_mknod() here. */
1541 rc = ll_mknod(dir, dentry, mode, 0);
1543 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, unhashed %d\n",
1544 dentry->d_name.len, dentry->d_name.name, d_unhashed(dentry));
1547 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE,
1548 ktime_us_delta(ktime_get(), kstart));
1552 #else /* !HAVE_IOP_ATOMIC_OPEN */
1553 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1554 ll_umode_t mode, struct nameidata *nd)
1556 struct ll_dentry_data *lld = ll_d2d(dentry);
1557 struct lookup_intent *it = NULL;
1558 ktime_t kstart = ktime_get();
1561 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1567 /* LU-8559: use LUSTRE_OPC_CREATE for non atomic open case
1568 * so that volatile file name is recoginized.
1569 * Mknod(2), however, is designed to not recognize volatile
1570 * file name to avoid inode leak under orphan directory until
1572 return ll_new_node(dir, dentry, NULL, mode, 0,
1578 /* Was there an error? Propagate it! */
1579 if (it->it_status) {
1584 rc = ll_create_it(dir, dentry, it, NULL, 0);
1585 if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
1588 nd->intent.open.file->private_data = it;
1589 filp = lookup_instantiate_filp(nd, dentry, NULL);
1595 ll_intent_release(it);
1596 OBD_FREE(it, sizeof(*it));
1599 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE,
1600 ktime_us_delta(ktime_get(), kstart));
1604 #endif /* HAVE_IOP_ATOMIC_OPEN */
1606 static int ll_symlink(struct inode *dir, struct dentry *dchild,
1607 const char *oldpath)
1609 struct qstr *name = &dchild->d_name;
1610 ktime_t kstart = ktime_get();
1614 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), target=%.*s\n",
1615 name->len, name->name, PFID(ll_inode2fid(dir)),
1616 dir, 3000, oldpath);
1618 err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO, 0,
1619 LUSTRE_OPC_SYMLINK);
1622 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK,
1623 ktime_us_delta(ktime_get(), kstart));
1628 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1629 struct dentry *new_dentry)
1631 struct inode *src = old_dentry->d_inode;
1632 struct qstr *name = &new_dentry->d_name;
1633 struct ll_sb_info *sbi = ll_i2sbi(dir);
1634 struct ptlrpc_request *request = NULL;
1635 struct md_op_data *op_data;
1636 ktime_t kstart = ktime_get();
1640 CDEBUG(D_VFSTRACE, "VFS Op: inode="DFID"(%p), dir="DFID"(%p), "
1641 "target=%.*s\n", PFID(ll_inode2fid(src)), src,
1642 PFID(ll_inode2fid(dir)), dir, name->len, name->name);
1644 op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
1645 0, LUSTRE_OPC_ANY, NULL);
1646 if (IS_ERR(op_data))
1647 RETURN(PTR_ERR(op_data));
1649 err = md_link(sbi->ll_md_exp, op_data, &request);
1650 ll_finish_md_op_data(op_data);
1654 ll_update_times(request, dir);
1655 ll_stats_ops_tally(sbi, LPROC_LL_LINK,
1656 ktime_us_delta(ktime_get(), kstart));
1659 ptlrpc_req_finished(request);
1663 static int ll_mkdir(struct inode *dir, struct dentry *dchild, ll_umode_t mode)
1665 struct qstr *name = &dchild->d_name;
1666 ktime_t kstart = ktime_get();
1670 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1671 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1673 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1674 mode &= ~current_umask();
1676 mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
1678 err = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1680 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR,
1681 ktime_us_delta(ktime_get(), kstart));
1686 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1688 struct qstr *name = &dchild->d_name;
1689 struct ptlrpc_request *request = NULL;
1690 struct md_op_data *op_data;
1691 ktime_t kstart = ktime_get();
1696 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1697 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1699 if (unlikely(d_mountpoint(dchild)))
1702 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1703 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1704 if (IS_ERR(op_data))
1705 RETURN(PTR_ERR(op_data));
1707 if (dchild->d_inode != NULL)
1708 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1710 op_data->op_fid2 = op_data->op_fid3;
1711 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1712 ll_finish_md_op_data(op_data);
1714 ll_update_times(request, dir);
1716 ptlrpc_req_finished(request);
1718 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1719 ktime_us_delta(ktime_get(), kstart));
1726 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
1728 struct ptlrpc_request *request = NULL;
1729 struct md_op_data *op_data;
1730 ktime_t kstart = ktime_get();
1734 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1735 namelen, name, PFID(ll_inode2fid(dir)), dir);
1737 op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
1738 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1739 if (IS_ERR(op_data))
1740 RETURN(PTR_ERR(op_data));
1741 op_data->op_cli_flags |= CLI_RM_ENTRY;
1742 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1743 ll_finish_md_op_data(op_data);
1745 ll_update_times(request, dir);
1747 ptlrpc_req_finished(request);
1749 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1750 ktime_us_delta(ktime_get(), kstart));
1754 static int ll_unlink(struct inode *dir, struct dentry *dchild)
1756 struct qstr *name = &dchild->d_name;
1757 struct ptlrpc_request *request = NULL;
1758 struct md_op_data *op_data;
1759 struct mdt_body *body;
1760 ktime_t kstart = ktime_get();
1765 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1766 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1769 * XXX: unlink bind mountpoint maybe call to here,
1770 * just check it as vfs_unlink does.
1772 if (unlikely(d_mountpoint(dchild)))
1775 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
1776 LUSTRE_OPC_ANY, NULL);
1777 if (IS_ERR(op_data))
1778 RETURN(PTR_ERR(op_data));
1780 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1782 op_data->op_fid2 = op_data->op_fid3;
1783 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1784 ll_finish_md_op_data(op_data);
1789 * The server puts attributes in on the last unlink, use them to update
1790 * the link count so the inode can be freed immediately.
1792 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1793 if (body->mbo_valid & OBD_MD_FLNLINK)
1794 set_nlink(dchild->d_inode, body->mbo_nlink);
1796 ll_update_times(request, dir);
1799 ptlrpc_req_finished(request);
1801 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK,
1802 ktime_us_delta(ktime_get(), kstart));
1806 static int ll_rename(struct inode *src, struct dentry *src_dchild,
1807 struct inode *tgt, struct dentry *tgt_dchild
1808 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1809 , unsigned int flags
1813 struct qstr *src_name = &src_dchild->d_name;
1814 struct qstr *tgt_name = &tgt_dchild->d_name;
1815 struct ptlrpc_request *request = NULL;
1816 struct ll_sb_info *sbi = ll_i2sbi(src);
1817 struct md_op_data *op_data;
1818 ktime_t kstart = ktime_get();
1822 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1827 CDEBUG(D_VFSTRACE, "VFS Op:oldname=%.*s, src_dir="DFID
1828 "(%p), newname=%.*s, tgt_dir="DFID"(%p)\n",
1829 src_name->len, src_name->name,
1830 PFID(ll_inode2fid(src)), src, tgt_name->len,
1831 tgt_name->name, PFID(ll_inode2fid(tgt)), tgt);
1833 if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
1836 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1837 LUSTRE_OPC_ANY, NULL);
1838 if (IS_ERR(op_data))
1839 RETURN(PTR_ERR(op_data));
1841 if (src_dchild->d_inode != NULL)
1842 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1844 if (tgt_dchild->d_inode != NULL)
1845 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1847 err = md_rename(sbi->ll_md_exp, op_data,
1848 src_name->name, src_name->len,
1849 tgt_name->name, tgt_name->len, &request);
1850 ll_finish_md_op_data(op_data);
1852 ll_update_times(request, src);
1853 ll_update_times(request, tgt);
1856 ptlrpc_req_finished(request);
1859 d_move(src_dchild, tgt_dchild);
1860 ll_stats_ops_tally(sbi, LPROC_LL_RENAME,
1861 ktime_us_delta(ktime_get(), kstart));
1867 const struct inode_operations ll_dir_inode_operations = {
1869 #ifdef HAVE_IOP_ATOMIC_OPEN
1870 .atomic_open = ll_atomic_open,
1872 .lookup = ll_lookup_nd,
1873 .create = ll_create_nd,
1874 /* We need all these non-raw things for NFSD, to not patch it. */
1875 .unlink = ll_unlink,
1878 .symlink = ll_symlink,
1880 .rename = ll_rename,
1881 .setattr = ll_setattr,
1882 .getattr = ll_getattr,
1883 .permission = ll_inode_permission,
1884 #ifdef HAVE_IOP_XATTR
1885 .setxattr = ll_setxattr,
1886 .getxattr = ll_getxattr,
1887 .removexattr = ll_removexattr,
1889 .listxattr = ll_listxattr,
1890 #ifdef HAVE_IOP_GET_ACL
1891 .get_acl = ll_get_acl,
1893 #ifdef HAVE_IOP_SET_ACL
1894 .set_acl = ll_set_acl,
1898 const struct inode_operations ll_special_inode_operations = {
1899 .setattr = ll_setattr,
1900 .getattr = ll_getattr,
1901 .permission = ll_inode_permission,
1902 #ifdef HAVE_IOP_XATTR
1903 .setxattr = ll_setxattr,
1904 .getxattr = ll_getxattr,
1905 .removexattr = ll_removexattr,
1907 .listxattr = ll_listxattr,
1908 #ifdef HAVE_IOP_GET_ACL
1909 .get_acl = ll_get_acl,
1911 #ifdef HAVE_IOP_SET_ACL
1912 .set_acl = ll_set_acl,