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 *desc,
434 void *data, int flag)
436 struct lustre_handle lockh;
437 __u64 bits = lock->l_policy_data.l_inodebits.bits;
443 case LDLM_CB_BLOCKING:
445 __u64 cancel_flags = LCF_ASYNC;
447 if (ll_md_need_convert(lock)) {
448 cancel_flags |= LCF_CONVERT;
449 /* For lock convert some cancel actions may require
450 * this lock with non-dropped canceled bits, e.g. page
451 * flush for DOM lock. So call ll_lock_cancel_bits()
452 * here while canceled bits are still set.
454 bits = lock->l_policy_data.l_inodebits.cancel_bits;
455 if (bits & MDS_INODELOCK_DOM)
456 ll_lock_cancel_bits(lock, MDS_INODELOCK_DOM);
458 ldlm_lock2handle(lock, &lockh);
459 rc = ldlm_cli_cancel(&lockh, cancel_flags);
461 CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
466 case LDLM_CB_CANCELING:
467 /* Nothing to do for non-granted locks */
468 if (!ldlm_is_granted(lock))
471 if (ldlm_is_converting(lock)) {
472 /* this is called on already converted lock, so
473 * ibits has remained bits only and cancel_bits
474 * are bits that were dropped.
475 * Note that DOM lock is handled prior lock convert
476 * and is excluded here.
478 bits = lock->l_policy_data.l_inodebits.cancel_bits &
481 LASSERT(ldlm_is_canceling(lock));
483 ll_lock_cancel_bits(lock, bits);
492 __u32 ll_i2suppgid(struct inode *i)
494 if (in_group_p(i->i_gid))
495 return (__u32)from_kgid(&init_user_ns, i->i_gid);
497 return (__u32) __kgid_val(INVALID_GID);
500 /* Pack the required supplementary groups into the supplied groups array.
501 * If we don't need to use the groups from the target inode(s) then we
502 * instead pack one or more groups from the user's supplementary group
503 * array in case it might be useful. Not needed if doing an MDS-side upcall. */
504 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
507 LASSERT(suppgids != NULL);
509 suppgids[0] = ll_i2suppgid(i1);
512 suppgids[1] = ll_i2suppgid(i2);
518 * try to reuse three types of dentry:
519 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
520 * by concurrent .revalidate).
521 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
522 * be cleared by others calling d_lustre_revalidate).
523 * 3. DISCONNECTED alias.
525 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
527 struct dentry *alias, *discon_alias, *invalid_alias;
528 DECLARE_LL_D_HLIST_NODE_PTR(p);
530 if (ll_d_hlist_empty(&inode->i_dentry))
533 discon_alias = invalid_alias = NULL;
535 spin_lock(&inode->i_lock);
536 ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry) {
537 LASSERT(alias != dentry);
539 spin_lock(&alias->d_lock);
540 if ((alias->d_flags & DCACHE_DISCONNECTED) &&
541 S_ISDIR(inode->i_mode))
542 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
543 discon_alias = alias;
544 else if (alias->d_parent == dentry->d_parent &&
545 alias->d_name.hash == dentry->d_name.hash &&
546 alias->d_name.len == dentry->d_name.len &&
547 memcmp(alias->d_name.name, dentry->d_name.name,
548 dentry->d_name.len) == 0)
549 invalid_alias = alias;
550 spin_unlock(&alias->d_lock);
555 alias = invalid_alias ?: discon_alias ?: NULL;
557 spin_lock(&alias->d_lock);
559 spin_unlock(&alias->d_lock);
561 spin_unlock(&inode->i_lock);
567 * Similar to d_splice_alias(), but lustre treats invalid alias
568 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
570 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
576 new = ll_find_alias(inode, de);
586 "Reuse dentry %p inode %p refc %d flags %#x\n",
587 new, new->d_inode, ll_d_count(new), new->d_flags);
595 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
596 de, de->d_inode, ll_d_count(de), de->d_flags);
600 static int ll_lookup_it_finish(struct ptlrpc_request *request,
601 struct lookup_intent *it,
602 struct inode *parent, struct dentry **de,
603 void *secctx, __u32 secctxlen)
605 struct inode *inode = NULL;
608 struct dentry *alias;
611 /* NB 1 request reference will be taken away by ll_intent_lock()
613 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
615 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
616 struct req_capsule *pill = &request->rq_pill;
617 struct mdt_body *body = req_capsule_server_get(pill,
620 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
624 if (it->it_op & IT_OPEN)
625 ll_dom_finish_open(inode, request, it);
627 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
629 /* We used to query real size from OSTs here, but actually
630 * this is not needed. For stat() calls size would be updated
631 * from subsequent do_revalidate()->ll_inode_revalidate_it() in
633 * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
634 * Everybody else who needs correct file size would call
635 * ll_glimpse_size or some equivalent themselves anyway.
639 /* If security context was returned by MDT, put it in
640 * inode now to save an extra getxattr from security hooks,
641 * and avoid deadlock.
643 if (body->mbo_valid & OBD_MD_SECCTX) {
644 secctx = req_capsule_server_get(pill, &RMF_FILE_SECCTX);
645 secctxlen = req_capsule_get_size(pill,
650 CDEBUG(D_SEC, "server returned security context"
652 PFID(ll_inode2fid(inode)));
655 if (secctx != NULL && secctxlen != 0) {
657 rc = security_inode_notifysecctx(inode, secctx,
661 CWARN("cannot set security context for "
663 PFID(ll_inode2fid(inode)), rc);
667 /* Only hash *de if it is unhashed (new dentry).
668 * Atoimc_open may passin hashed dentries for open.
670 alias = ll_splice_alias(inode, *de);
672 GOTO(out, rc = PTR_ERR(alias));
676 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
677 /* we have lookup look - unhide dentry */
678 if (bits & MDS_INODELOCK_LOOKUP)
679 d_lustre_revalidate(*de);
680 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
682 * If file was created on the server, the dentry is revalidated
683 * in ll_create_it if the lock allows for it.
685 /* Check that parent has UPDATE lock. */
686 struct lookup_intent parent_it = {
688 .it_lock_handle = 0 };
689 struct lu_fid fid = ll_i2info(parent)->lli_fid;
691 /* If it is striped directory, get the real stripe parent */
692 if (unlikely(ll_dir_striped(parent))) {
693 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
694 ll_i2info(parent)->lli_lsm_md,
696 (*de)->d_name.len, &fid);
701 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
703 d_lustre_revalidate(*de);
704 ll_intent_release(&parent_it);
711 if (rc != 0 && it->it_op & IT_OPEN)
712 ll_open_cleanup((*de)->d_sb, request);
717 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
718 struct lookup_intent *it,
719 void **secctx, __u32 *secctxlen,
720 struct pcc_create_attach *pca)
722 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
723 struct dentry *save = dentry, *retval;
724 struct ptlrpc_request *req = NULL;
725 struct md_op_data *op_data = NULL;
726 struct lov_user_md *lum = NULL;
729 char secctx_name[XATTR_NAME_MAX + 1];
733 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
734 RETURN(ERR_PTR(-ENAMETOOLONG));
736 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
737 dentry->d_name.len, dentry->d_name.name,
738 PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
740 if (d_mountpoint(dentry))
741 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
743 if (it == NULL || it->it_op == IT_GETXATTR)
746 if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
747 rc = ll_statahead(parent, &dentry, 0);
749 RETURN(dentry == save ? NULL : dentry);
752 if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE &&
753 dentry->d_sb->s_flags & SB_RDONLY)
754 RETURN(ERR_PTR(-EROFS));
756 if (it->it_op & IT_CREAT)
757 opc = LUSTRE_OPC_CREATE;
759 opc = LUSTRE_OPC_ANY;
761 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
762 dentry->d_name.len, 0, opc, NULL);
764 GOTO(out, retval = ERR_CAST(op_data));
766 /* enforce umask if acl disabled or MDS doesn't support umask */
767 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
768 it->it_create_mode &= ~current_umask();
770 if (it->it_op & IT_CREAT &&
771 ll_i2sbi(parent)->ll_flags & LL_SBI_FILE_SECCTX) {
772 rc = ll_dentry_init_security(dentry, it->it_create_mode,
774 &op_data->op_file_secctx_name,
775 &op_data->op_file_secctx,
776 &op_data->op_file_secctx_size);
778 GOTO(out, retval = ERR_PTR(rc));
780 *secctx = op_data->op_file_secctx;
781 if (secctxlen != NULL)
782 *secctxlen = op_data->op_file_secctx_size;
786 if (secctxlen != NULL)
790 /* ask for security context upon intent */
791 if (it->it_op & (IT_LOOKUP | IT_GETATTR | IT_OPEN)) {
792 /* get name of security xattr to request to server */
793 rc = ll_listsecurity(parent, secctx_name,
794 sizeof(secctx_name));
796 CDEBUG(D_SEC, "cannot get security xattr name for "
798 PFID(ll_inode2fid(parent)), rc);
800 op_data->op_file_secctx_name = secctx_name;
801 op_data->op_file_secctx_name_size = rc;
802 CDEBUG(D_SEC, "'%.*s' is security xattr for "DFID"\n",
803 rc, secctx_name, PFID(ll_inode2fid(parent)));
807 if (pca && pca->pca_dataset) {
808 struct pcc_dataset *dataset = pca->pca_dataset;
812 GOTO(out, retval = ERR_PTR(-ENOMEM));
814 lum->lmm_magic = LOV_USER_MAGIC_V1;
815 lum->lmm_pattern = LOV_PATTERN_F_RELEASED | LOV_PATTERN_RAID0;
816 op_data->op_data = lum;
817 op_data->op_data_size = sizeof(*lum);
818 op_data->op_archive_id = dataset->pccd_rwid;
820 rc = obd_fid_alloc(NULL, ll_i2mdexp(parent), &op_data->op_fid2,
823 GOTO(out, retval = ERR_PTR(rc));
825 rc = pcc_inode_create(parent->i_sb, dataset, &op_data->op_fid2,
828 GOTO(out, retval = ERR_PTR(rc));
830 it->it_flags |= MDS_OPEN_PCC;
833 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
834 &ll_md_blocking_ast, 0);
835 /* If the MDS allows the client to chgrp (CFS_SETGRP_PERM), but the
836 * client does not know which suppgid should be sent to the MDS, or
837 * some other(s) changed the target file's GID after this RPC sent
838 * to the MDS with the suppgid as the original GID, then we should
839 * try again with right suppgid. */
840 if (rc == -EACCES && it->it_op & IT_OPEN &&
841 it_disposition(it, DISP_OPEN_DENY)) {
842 struct mdt_body *body;
844 LASSERT(req != NULL);
846 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
847 if (op_data->op_suppgids[0] == body->mbo_gid ||
848 op_data->op_suppgids[1] == body->mbo_gid ||
849 !in_group_p(make_kgid(&init_user_ns, body->mbo_gid)))
850 GOTO(out, retval = ERR_PTR(-EACCES));
852 fid_zero(&op_data->op_fid2);
853 op_data->op_suppgids[1] = body->mbo_gid;
854 ptlrpc_req_finished(req);
856 ll_intent_release(it);
857 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
858 &ll_md_blocking_ast, 0);
862 GOTO(out, retval = ERR_PTR(rc));
864 /* dir layout may change */
865 ll_unlock_md_op_lsm(op_data);
866 rc = ll_lookup_it_finish(req, it, parent, &dentry,
867 secctx != NULL ? *secctx : NULL,
868 secctxlen != NULL ? *secctxlen : 0);
870 ll_intent_release(it);
871 GOTO(out, retval = ERR_PTR(rc));
874 if ((it->it_op & IT_OPEN) && dentry->d_inode &&
875 !S_ISREG(dentry->d_inode->i_mode) &&
876 !S_ISDIR(dentry->d_inode->i_mode)) {
877 ll_release_openhandle(dentry, it);
879 ll_lookup_finish_locks(it, dentry);
881 GOTO(out, retval = (dentry == save) ? NULL : dentry);
884 if (op_data != NULL && !IS_ERR(op_data)) {
885 if (secctx != NULL && secctxlen != NULL) {
886 /* caller needs sec ctx info, so reset it in op_data to
887 * prevent it from being freed */
888 op_data->op_file_secctx = NULL;
889 op_data->op_file_secctx_size = 0;
891 ll_finish_md_op_data(op_data);
897 ptlrpc_req_finished(req);
901 #ifdef HAVE_IOP_ATOMIC_OPEN
902 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
905 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
908 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), flags=%u\n",
909 dentry->d_name.len, dentry->d_name.name,
910 PFID(ll_inode2fid(parent)), parent, flags);
913 * Optimize away (CREATE && !OPEN). Let .create handle the race.
914 * but only if we have write permissions there, otherwise we need
915 * to proceed with lookup. LU-4185
917 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
918 (inode_permission(parent, MAY_WRITE | MAY_EXEC) == 0))
921 if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
925 de = ll_lookup_it(parent, dentry, itp, NULL, NULL, NULL);
928 ll_intent_release(itp);
933 #ifdef FMODE_CREATED /* added in Linux v4.18-rc1-20-g73a09dd */
934 # define ll_is_opened(o, f) ((f)->f_mode & FMODE_OPENED)
935 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL)
937 # define ll_set_created(o, f) \
939 (f)->f_mode |= FMODE_CREATED; \
943 # define ll_is_opened(o, f) (*(o))
944 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL, (o))
945 # define ll_last_arg , int *opened
946 # define ll_set_created(o, f) \
948 *(o) |= FILE_CREATED; \
954 * For cached negative dentry and new dentry, handle lookup/create/open
957 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
958 struct file *file, unsigned open_flags,
959 umode_t mode ll_last_arg)
961 struct lookup_intent *it;
963 long long lookup_flags = LOOKUP_OPEN;
966 struct ll_sb_info *sbi;
967 struct pcc_create_attach pca = { NULL, NULL };
971 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), file %p,"
972 "open_flags %x, mode %x opened %d\n",
973 dentry->d_name.len, dentry->d_name.name,
974 PFID(ll_inode2fid(dir)), dir, file, open_flags, mode,
975 ll_is_opened(opened, file));
977 /* Only negative dentries enter here */
978 LASSERT(dentry->d_inode == NULL);
980 if (!d_unhashed(dentry)) {
981 /* A valid negative dentry that just passed revalidation,
982 * there's little point to try and open it server-side,
983 * even though there's a minuscule chance it might succeed.
984 * Either way it's a valid race to just return -ENOENT here.
986 if (!(open_flags & O_CREAT))
989 /* Otherwise we just unhash it to be rehashed afresh via
990 * lookup if necessary
995 OBD_ALLOC(it, sizeof(*it));
1000 if (open_flags & O_CREAT) {
1001 it->it_op |= IT_CREAT;
1002 lookup_flags |= LOOKUP_CREATE;
1003 sbi = ll_i2sbi(dir);
1004 /* Volatile file is used for HSM restore, so do not use PCC */
1005 if (!filename_is_volatile(dentry->d_name.name,
1006 dentry->d_name.len, NULL)) {
1007 struct pcc_matcher item;
1008 struct pcc_dataset *dataset;
1010 item.pm_uid = from_kuid(&init_user_ns, current_uid());
1011 item.pm_gid = from_kgid(&init_user_ns, current_gid());
1012 item.pm_projid = ll_i2info(dir)->lli_projid;
1013 item.pm_name = &dentry->d_name;
1014 dataset = pcc_dataset_match_get(&sbi->ll_pcc_super,
1016 pca.pca_dataset = dataset;
1019 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
1020 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
1021 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1023 /* Dentry added to dcache tree in ll_lookup_it */
1024 de = ll_lookup_it(dir, dentry, it, &secctx, &secctxlen, &pca);
1027 else if (de != NULL)
1030 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1033 if (it_disposition(it, DISP_OPEN_CREATE)) {
1034 /* Dentry instantiated in ll_create_it. */
1035 rc = ll_create_it(dir, dentry, it, secctx, secctxlen);
1036 security_release_secctx(secctx, secctxlen);
1038 /* We dget in ll_splice_alias. */
1044 rc = pcc_inode_create_fini(dentry->d_inode, &pca);
1048 GOTO(out_release, rc);
1051 ll_set_created(opened, file);
1053 /* Open the file with O_CREAT, but the file already
1054 * existed on MDT. This may happend in the case that
1055 * the LOOKUP ibits lock is revoked and the
1056 * corresponding dentry cache is deleted.
1057 * i.e. In the current Lustre, the truncate operation
1058 * will revoke the LOOKUP ibits lock, and the file
1059 * dentry cache will be invalidated. The following open
1060 * with O_CREAT flag will call into ->atomic_open, the
1061 * file was wrongly though as newly created file and
1062 * try to auto cache the file. So after client knows it
1063 * is not a DISP_OPEN_CREATE, it should cleanup the
1064 * already created PCC copy.
1066 pcc_create_attach_cleanup(dir->i_sb, &pca);
1069 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN)) {
1071 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1072 /* We cannot call open here as it might
1073 * deadlock. This case is unreachable in
1074 * practice because of OBD_CONNECT_NODEVOH. */
1075 rc = finish_no_open(file, de);
1077 file->private_data = it;
1078 rc = ll_finish_open(file, dentry, opened);
1079 /* We dget in ll_splice_alias. finish_open takes
1080 * care of dget for fd open.
1086 rc = finish_no_open(file, de);
1089 pcc_create_attach_cleanup(dir->i_sb, &pca);
1093 ll_intent_release(it);
1094 OBD_FREE(it, sizeof(*it));
1099 #else /* !HAVE_IOP_ATOMIC_OPEN */
1100 static struct lookup_intent *
1101 ll_convert_intent(struct open_intent *oit, int lookup_flags, bool is_readonly)
1103 struct lookup_intent *it;
1107 return ERR_PTR(-ENOMEM);
1109 if (lookup_flags & LOOKUP_OPEN) {
1110 it->it_op = IT_OPEN;
1111 /* Avoid file creation for ro bind mount point(is_readonly) */
1112 if ((lookup_flags & LOOKUP_CREATE) && !is_readonly)
1113 it->it_op |= IT_CREAT;
1114 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
1115 it->it_flags = ll_namei_to_lookup_intent_flag(oit->flags &
1116 ~(is_readonly ? O_CREAT : 0));
1117 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1119 it->it_op = IT_GETATTR;
1125 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
1126 struct nameidata *nd)
1131 if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
1132 struct lookup_intent *it;
1134 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
1135 it = ll_d2d(dentry)->lld_it;
1136 ll_d2d(dentry)->lld_it = NULL;
1139 * Optimize away (CREATE && !OPEN). Let .create handle
1140 * the race. But only if we have write permissions
1141 * there, otherwise we need to proceed with lookup.
1144 if ((nd->flags & LOOKUP_CREATE) &&
1145 !(nd->flags & LOOKUP_OPEN) &&
1146 (inode_permission(parent,
1147 MAY_WRITE | MAY_EXEC) == 0))
1150 it = ll_convert_intent(&nd->intent.open, nd->flags,
1151 (nd->path.mnt->mnt_flags & MNT_READONLY) ||
1152 (nd->path.mnt->mnt_sb->s_flags & SB_RDONLY));
1154 RETURN((struct dentry *)it);
1157 de = ll_lookup_it(parent, dentry, it, NULL, NULL, NULL);
1160 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
1161 if (dentry->d_inode &&
1162 it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
1163 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1164 /* We cannot call open here as it might
1165 * deadlock. This case is unreachable in
1166 * practice because of
1167 * OBD_CONNECT_NODEVOH. */
1171 nd->intent.open.file->private_data = it;
1172 filp = lookup_instantiate_filp(nd,
1178 de = (struct dentry *)filp;
1181 } else if (it_disposition(it, DISP_OPEN_CREATE)) {
1182 /* XXX This can only reliably work on assumption
1183 * that there are NO hashed negative dentries.*/
1184 ll_d2d(dentry)->lld_it = it;
1185 it = NULL; /* Will be freed in ll_create_nd */
1186 /* We absolutely depend on ll_create_nd to be
1187 * called to not leak this intent and possible
1188 * data attached to it */
1193 ll_intent_release(it);
1194 OBD_FREE(it, sizeof(*it));
1197 de = ll_lookup_it(parent, dentry, NULL, NULL, NULL, NULL);
1202 #endif /* HAVE_IOP_ATOMIC_OPEN */
1204 /* We depend on "mode" being set with the proper file type/umask by now */
1205 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
1207 struct inode *inode = NULL;
1208 struct ptlrpc_request *request = NULL;
1209 struct ll_sb_info *sbi = ll_i2sbi(dir);
1213 LASSERT(it && it->it_disposition);
1215 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
1216 request = it->it_request;
1217 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
1218 rc = ll_prep_inode(&inode, request, dir->i_sb, it);
1220 GOTO(out, inode = ERR_PTR(rc));
1222 /* Pause to allow for a race with concurrent access by fid */
1223 OBD_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_NODE_PAUSE, cfs_fail_val);
1225 /* We asked for a lock on the directory, but were granted a
1226 * lock on the inode. Since we finally have an inode pointer,
1227 * stuff it in the lock. */
1228 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
1229 PFID(ll_inode2fid(inode)), inode);
1230 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
1233 ptlrpc_req_finished(request);
1238 * By the time this is called, we already have created the directory cache
1239 * entry for the new file, but it is so far negative - it has no inode.
1241 * We defer creating the OBD object(s) until open, to keep the intent and
1242 * non-intent code paths similar, and also because we do not have the MDS
1243 * inode number before calling ll_create_node() (which is needed for LOV),
1244 * so we would need to do yet another RPC to the MDS to store the LOV EA
1245 * data on the MDS. If needed, we would pass the PACKED lmm as data and
1246 * lmm_size in datalen (the MDS still has code which will handle that).
1248 * If the create succeeds, we fill in the inode information
1249 * with d_instantiate().
1251 static int ll_create_it(struct inode *dir, struct dentry *dentry,
1252 struct lookup_intent *it,
1253 void *secctx, __u32 secctxlen)
1255 struct inode *inode;
1260 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
1261 dentry->d_name.len, dentry->d_name.name,
1262 PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
1264 rc = it_open_error(DISP_OPEN_CREATE, it);
1268 inode = ll_create_node(dir, it);
1270 RETURN(PTR_ERR(inode));
1272 if ((ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX) &&
1275 /* must be done before d_instantiate, because it calls
1276 * security_d_instantiate, which means a getxattr if security
1277 * context is not set yet */
1278 rc = security_inode_notifysecctx(inode, secctx, secctxlen);
1279 inode_unlock(inode);
1284 d_instantiate(dentry, inode);
1286 if (!(ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX)) {
1287 rc = ll_inode_init_security(dentry, inode, dir);
1292 ll_set_lock_data(ll_i2sbi(dir)->ll_md_exp, inode, it, &bits);
1293 if (bits & MDS_INODELOCK_LOOKUP)
1294 d_lustre_revalidate(dentry);
1299 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
1301 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
1305 if (body->mbo_valid & OBD_MD_FLMTIME &&
1306 body->mbo_mtime > inode->i_mtime.tv_sec) {
1308 "setting fid " DFID " mtime from %lld to %llu\n",
1309 PFID(ll_inode2fid(inode)),
1310 (s64)inode->i_mtime.tv_sec, body->mbo_mtime);
1311 inode->i_mtime.tv_sec = body->mbo_mtime;
1314 if (body->mbo_valid & OBD_MD_FLCTIME &&
1315 body->mbo_ctime > inode->i_ctime.tv_sec)
1316 inode->i_ctime.tv_sec = body->mbo_ctime;
1319 static int ll_new_node(struct inode *dir, struct dentry *dchild,
1320 const char *tgt, umode_t mode, int rdev, __u32 opc)
1322 struct qstr *name = &dchild->d_name;
1323 struct ptlrpc_request *request = NULL;
1324 struct md_op_data *op_data;
1325 struct inode *inode = NULL;
1326 struct ll_sb_info *sbi = ll_i2sbi(dir);
1331 if (unlikely(tgt != NULL))
1332 tgt_len = strlen(tgt) + 1;
1335 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1336 name->len, 0, opc, NULL);
1337 if (IS_ERR(op_data))
1338 GOTO(err_exit, err = PTR_ERR(op_data));
1340 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1341 err = ll_dentry_init_security(dchild, mode, &dchild->d_name,
1342 &op_data->op_file_secctx_name,
1343 &op_data->op_file_secctx,
1344 &op_data->op_file_secctx_size);
1346 GOTO(err_exit, err);
1349 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
1350 from_kuid(&init_user_ns, current_fsuid()),
1351 from_kgid(&init_user_ns, current_fsgid()),
1352 cfs_curproc_cap_pack(), rdev, &request);
1353 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 58, 0)
1355 * server < 2.12.58 doesn't pack default LMV in intent_getattr reply,
1356 * fetch default LMV here.
1358 if (unlikely(err == -EREMOTE)) {
1359 struct ll_inode_info *lli = ll_i2info(dir);
1360 struct lmv_user_md *lum;
1364 ptlrpc_req_finished(request);
1367 err2 = ll_dir_getstripe(dir, (void **)&lum, &lumsize, &request,
1368 OBD_MD_DEFAULT_MEA);
1369 ll_finish_md_op_data(op_data);
1372 struct lustre_md md = { NULL };
1374 md.body = req_capsule_server_get(&request->rq_pill,
1377 GOTO(err_exit, err = -EPROTO);
1379 OBD_ALLOC_PTR(md.default_lmv);
1380 if (!md.default_lmv)
1381 GOTO(err_exit, err = -ENOMEM);
1383 md.default_lmv->lsm_md_magic = lum->lum_magic;
1384 md.default_lmv->lsm_md_stripe_count =
1385 lum->lum_stripe_count;
1386 md.default_lmv->lsm_md_master_mdt_index =
1387 lum->lum_stripe_offset;
1388 md.default_lmv->lsm_md_hash_type = lum->lum_hash_type;
1390 err = ll_update_inode(dir, &md);
1391 md_free_lustre_md(sbi->ll_md_exp, &md);
1393 GOTO(err_exit, err);
1394 } else if (err2 == -ENODATA && lli->lli_default_lsm_md) {
1396 * If there are no default stripe EA on the MDT, but the
1397 * client has default stripe, then it probably means
1398 * default stripe EA has just been deleted.
1400 down_write(&lli->lli_lsm_sem);
1401 if (lli->lli_default_lsm_md)
1402 OBD_FREE_PTR(lli->lli_default_lsm_md);
1403 lli->lli_default_lsm_md = NULL;
1404 up_write(&lli->lli_lsm_sem);
1406 GOTO(err_exit, err);
1409 ptlrpc_req_finished(request);
1416 GOTO(err_exit, err);
1418 ll_update_times(request, dir);
1420 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_NEWNODE_PAUSE, cfs_fail_val);
1422 err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
1424 GOTO(err_exit, err);
1426 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1428 /* must be done before d_instantiate, because it calls
1429 * security_d_instantiate, which means a getxattr if security
1430 * context is not set yet */
1431 err = security_inode_notifysecctx(inode,
1432 op_data->op_file_secctx,
1433 op_data->op_file_secctx_size);
1434 inode_unlock(inode);
1436 GOTO(err_exit, err);
1439 d_instantiate(dchild, inode);
1441 if (!(sbi->ll_flags & LL_SBI_FILE_SECCTX)) {
1442 err = ll_inode_init_security(dchild, inode, dir);
1444 GOTO(err_exit, err);
1449 if (request != NULL)
1450 ptlrpc_req_finished(request);
1452 if (!IS_ERR_OR_NULL(op_data))
1453 ll_finish_md_op_data(op_data);
1458 static int ll_mknod(struct inode *dir, struct dentry *dchild, ll_umode_t mode,
1461 struct qstr *name = &dchild->d_name;
1462 ktime_t kstart = ktime_get();
1466 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p) mode %o dev %x\n",
1467 name->len, name->name, PFID(ll_inode2fid(dir)), dir,
1470 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1471 mode &= ~current_umask();
1473 switch (mode & S_IFMT) {
1482 err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
1493 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD,
1494 ktime_us_delta(ktime_get(), kstart));
1499 #ifdef HAVE_IOP_ATOMIC_OPEN
1501 * Plain create. Intent create is handled in atomic_open.
1503 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1504 umode_t mode, bool want_excl)
1506 ktime_t kstart = ktime_get();
1509 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1511 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), "
1512 "flags=%u, excl=%d\n", dentry->d_name.len,
1513 dentry->d_name.name, PFID(ll_inode2fid(dir)),
1514 dir, mode, want_excl);
1516 /* Using mknod(2) to create a regular file is designed to not recognize
1517 * volatile file name, so we use ll_mknod() here. */
1518 rc = ll_mknod(dir, dentry, mode, 0);
1520 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, unhashed %d\n",
1521 dentry->d_name.len, dentry->d_name.name, d_unhashed(dentry));
1524 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE,
1525 ktime_us_delta(ktime_get(), kstart));
1529 #else /* !HAVE_IOP_ATOMIC_OPEN */
1530 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1531 ll_umode_t mode, struct nameidata *nd)
1533 struct ll_dentry_data *lld = ll_d2d(dentry);
1534 struct lookup_intent *it = NULL;
1535 ktime_t kstart = ktime_get();
1538 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1544 /* LU-8559: use LUSTRE_OPC_CREATE for non atomic open case
1545 * so that volatile file name is recoginized.
1546 * Mknod(2), however, is designed to not recognize volatile
1547 * file name to avoid inode leak under orphan directory until
1549 return ll_new_node(dir, dentry, NULL, mode, 0,
1555 /* Was there an error? Propagate it! */
1556 if (it->it_status) {
1561 rc = ll_create_it(dir, dentry, it, NULL, 0);
1562 if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
1565 nd->intent.open.file->private_data = it;
1566 filp = lookup_instantiate_filp(nd, dentry, NULL);
1572 ll_intent_release(it);
1573 OBD_FREE(it, sizeof(*it));
1576 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE,
1577 ktime_us_delta(ktime_get(), kstart));
1581 #endif /* HAVE_IOP_ATOMIC_OPEN */
1583 static int ll_symlink(struct inode *dir, struct dentry *dchild,
1584 const char *oldpath)
1586 struct qstr *name = &dchild->d_name;
1587 ktime_t kstart = ktime_get();
1591 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), target=%.*s\n",
1592 name->len, name->name, PFID(ll_inode2fid(dir)),
1593 dir, 3000, oldpath);
1595 err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO, 0,
1596 LUSTRE_OPC_SYMLINK);
1599 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK,
1600 ktime_us_delta(ktime_get(), kstart));
1605 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1606 struct dentry *new_dentry)
1608 struct inode *src = old_dentry->d_inode;
1609 struct qstr *name = &new_dentry->d_name;
1610 struct ll_sb_info *sbi = ll_i2sbi(dir);
1611 struct ptlrpc_request *request = NULL;
1612 struct md_op_data *op_data;
1613 ktime_t kstart = ktime_get();
1617 CDEBUG(D_VFSTRACE, "VFS Op: inode="DFID"(%p), dir="DFID"(%p), "
1618 "target=%.*s\n", PFID(ll_inode2fid(src)), src,
1619 PFID(ll_inode2fid(dir)), dir, name->len, name->name);
1621 op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
1622 0, LUSTRE_OPC_ANY, NULL);
1623 if (IS_ERR(op_data))
1624 RETURN(PTR_ERR(op_data));
1626 err = md_link(sbi->ll_md_exp, op_data, &request);
1627 ll_finish_md_op_data(op_data);
1631 ll_update_times(request, dir);
1632 ll_stats_ops_tally(sbi, LPROC_LL_LINK,
1633 ktime_us_delta(ktime_get(), kstart));
1636 ptlrpc_req_finished(request);
1640 static int ll_mkdir(struct inode *dir, struct dentry *dchild, ll_umode_t mode)
1642 struct qstr *name = &dchild->d_name;
1643 ktime_t kstart = ktime_get();
1647 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1648 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1650 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1651 mode &= ~current_umask();
1653 mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
1655 err = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1657 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR,
1658 ktime_us_delta(ktime_get(), kstart));
1663 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1665 struct qstr *name = &dchild->d_name;
1666 struct ptlrpc_request *request = NULL;
1667 struct md_op_data *op_data;
1668 ktime_t kstart = ktime_get();
1673 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1674 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1676 if (unlikely(d_mountpoint(dchild)))
1679 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1680 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1681 if (IS_ERR(op_data))
1682 RETURN(PTR_ERR(op_data));
1684 if (dchild->d_inode != NULL)
1685 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1687 op_data->op_fid2 = op_data->op_fid3;
1688 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1689 ll_finish_md_op_data(op_data);
1691 ll_update_times(request, dir);
1693 ptlrpc_req_finished(request);
1695 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1696 ktime_us_delta(ktime_get(), kstart));
1703 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
1705 struct ptlrpc_request *request = NULL;
1706 struct md_op_data *op_data;
1707 ktime_t kstart = ktime_get();
1711 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1712 namelen, name, PFID(ll_inode2fid(dir)), dir);
1714 op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
1715 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1716 if (IS_ERR(op_data))
1717 RETURN(PTR_ERR(op_data));
1718 op_data->op_cli_flags |= CLI_RM_ENTRY;
1719 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1720 ll_finish_md_op_data(op_data);
1722 ll_update_times(request, dir);
1724 ptlrpc_req_finished(request);
1726 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1727 ktime_us_delta(ktime_get(), kstart));
1731 static int ll_unlink(struct inode *dir, struct dentry *dchild)
1733 struct qstr *name = &dchild->d_name;
1734 struct ptlrpc_request *request = NULL;
1735 struct md_op_data *op_data;
1736 struct mdt_body *body;
1737 ktime_t kstart = ktime_get();
1742 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1743 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1746 * XXX: unlink bind mountpoint maybe call to here,
1747 * just check it as vfs_unlink does.
1749 if (unlikely(d_mountpoint(dchild)))
1752 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
1753 LUSTRE_OPC_ANY, NULL);
1754 if (IS_ERR(op_data))
1755 RETURN(PTR_ERR(op_data));
1757 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1759 op_data->op_fid2 = op_data->op_fid3;
1760 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1761 ll_finish_md_op_data(op_data);
1766 * The server puts attributes in on the last unlink, use them to update
1767 * the link count so the inode can be freed immediately.
1769 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1770 if (body->mbo_valid & OBD_MD_FLNLINK)
1771 set_nlink(dchild->d_inode, body->mbo_nlink);
1773 ll_update_times(request, dir);
1776 ptlrpc_req_finished(request);
1778 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK,
1779 ktime_us_delta(ktime_get(), kstart));
1783 static int ll_rename(struct inode *src, struct dentry *src_dchild,
1784 struct inode *tgt, struct dentry *tgt_dchild
1785 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1786 , unsigned int flags
1790 struct qstr *src_name = &src_dchild->d_name;
1791 struct qstr *tgt_name = &tgt_dchild->d_name;
1792 struct ptlrpc_request *request = NULL;
1793 struct ll_sb_info *sbi = ll_i2sbi(src);
1794 struct md_op_data *op_data;
1795 ktime_t kstart = ktime_get();
1799 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1804 CDEBUG(D_VFSTRACE, "VFS Op:oldname=%.*s, src_dir="DFID
1805 "(%p), newname=%.*s, tgt_dir="DFID"(%p)\n",
1806 src_name->len, src_name->name,
1807 PFID(ll_inode2fid(src)), src, tgt_name->len,
1808 tgt_name->name, PFID(ll_inode2fid(tgt)), tgt);
1810 if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
1813 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1814 LUSTRE_OPC_ANY, NULL);
1815 if (IS_ERR(op_data))
1816 RETURN(PTR_ERR(op_data));
1818 if (src_dchild->d_inode != NULL)
1819 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1821 if (tgt_dchild->d_inode != NULL)
1822 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1824 err = md_rename(sbi->ll_md_exp, op_data,
1825 src_name->name, src_name->len,
1826 tgt_name->name, tgt_name->len, &request);
1827 ll_finish_md_op_data(op_data);
1829 ll_update_times(request, src);
1830 ll_update_times(request, tgt);
1833 ptlrpc_req_finished(request);
1836 d_move(src_dchild, tgt_dchild);
1837 ll_stats_ops_tally(sbi, LPROC_LL_RENAME,
1838 ktime_us_delta(ktime_get(), kstart));
1844 const struct inode_operations ll_dir_inode_operations = {
1846 #ifdef HAVE_IOP_ATOMIC_OPEN
1847 .atomic_open = ll_atomic_open,
1849 .lookup = ll_lookup_nd,
1850 .create = ll_create_nd,
1851 /* We need all these non-raw things for NFSD, to not patch it. */
1852 .unlink = ll_unlink,
1855 .symlink = ll_symlink,
1857 .rename = ll_rename,
1858 .setattr = ll_setattr,
1859 .getattr = ll_getattr,
1860 .permission = ll_inode_permission,
1861 #ifdef HAVE_IOP_XATTR
1862 .setxattr = ll_setxattr,
1863 .getxattr = ll_getxattr,
1864 .removexattr = ll_removexattr,
1866 .listxattr = ll_listxattr,
1867 #ifdef HAVE_IOP_GET_ACL
1868 .get_acl = ll_get_acl,
1870 #ifdef HAVE_IOP_SET_ACL
1871 .set_acl = ll_set_acl,
1875 const struct inode_operations ll_special_inode_operations = {
1876 .setattr = ll_setattr,
1877 .getattr = ll_getattr,
1878 .permission = ll_inode_permission,
1879 #ifdef HAVE_IOP_XATTR
1880 .setxattr = ll_setxattr,
1881 .getxattr = ll_getxattr,
1882 .removexattr = ll_removexattr,
1884 .listxattr = ll_listxattr,
1885 #ifdef HAVE_IOP_GET_ACL
1886 .get_acl = ll_get_acl,
1888 #ifdef HAVE_IOP_SET_ACL
1889 .set_acl = ll_set_acl,