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)
618 struct inode *inode = NULL;
621 struct dentry *alias;
624 /* NB 1 request reference will be taken away by ll_intent_lock()
626 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
628 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
629 struct req_capsule *pill = &request->rq_pill;
630 struct mdt_body *body = req_capsule_server_get(pill,
633 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
637 if (it->it_op & IT_OPEN)
638 ll_dom_finish_open(inode, request, it);
640 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
642 /* We used to query real size from OSTs here, but actually
643 * this is not needed. For stat() calls size would be updated
644 * from subsequent do_revalidate()->ll_inode_revalidate_it() in
646 * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
647 * Everybody else who needs correct file size would call
648 * ll_glimpse_size or some equivalent themselves anyway.
652 /* If security context was returned by MDT, put it in
653 * inode now to save an extra getxattr from security hooks,
654 * and avoid deadlock.
656 if (body->mbo_valid & OBD_MD_SECCTX) {
657 secctx = req_capsule_server_get(pill, &RMF_FILE_SECCTX);
658 secctxlen = req_capsule_get_size(pill,
663 CDEBUG(D_SEC, "server returned security context"
665 PFID(ll_inode2fid(inode)));
668 if (secctx != NULL && secctxlen != 0) {
670 rc = security_inode_notifysecctx(inode, secctx,
674 CWARN("cannot set security context for "
676 PFID(ll_inode2fid(inode)), rc);
680 /* Only hash *de if it is unhashed (new dentry).
681 * Atoimc_open may passin hashed dentries for open.
683 alias = ll_splice_alias(inode, *de);
685 GOTO(out, rc = PTR_ERR(alias));
689 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
690 /* we have lookup look - unhide dentry */
691 if (bits & MDS_INODELOCK_LOOKUP)
692 d_lustre_revalidate(*de);
693 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
695 * If file was created on the server, the dentry is revalidated
696 * in ll_create_it if the lock allows for it.
698 /* Check that parent has UPDATE lock. */
699 struct lookup_intent parent_it = {
701 .it_lock_handle = 0 };
702 struct lu_fid fid = ll_i2info(parent)->lli_fid;
704 /* If it is striped directory, get the real stripe parent */
705 if (unlikely(ll_dir_striped(parent))) {
706 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
707 ll_i2info(parent)->lli_lsm_md,
709 (*de)->d_name.len, &fid);
714 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
716 d_lustre_revalidate(*de);
717 ll_intent_release(&parent_it);
724 if (rc != 0 && it->it_op & IT_OPEN)
725 ll_open_cleanup((*de)->d_sb, request);
730 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
731 struct lookup_intent *it,
732 void **secctx, __u32 *secctxlen,
733 struct pcc_create_attach *pca)
735 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
736 struct dentry *save = dentry, *retval;
737 struct ptlrpc_request *req = NULL;
738 struct md_op_data *op_data = NULL;
739 struct lov_user_md *lum = NULL;
742 char secctx_name[XATTR_NAME_MAX + 1];
746 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
747 RETURN(ERR_PTR(-ENAMETOOLONG));
749 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
750 dentry->d_name.len, dentry->d_name.name,
751 PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
753 if (d_mountpoint(dentry))
754 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
756 if (it == NULL || it->it_op == IT_GETXATTR)
759 if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
760 rc = ll_statahead(parent, &dentry, 0);
762 RETURN(dentry == save ? NULL : dentry);
765 if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE &&
766 dentry->d_sb->s_flags & SB_RDONLY)
767 RETURN(ERR_PTR(-EROFS));
769 if (it->it_op & IT_CREAT)
770 opc = LUSTRE_OPC_CREATE;
772 opc = LUSTRE_OPC_ANY;
774 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
775 dentry->d_name.len, 0, opc, NULL);
777 GOTO(out, retval = ERR_CAST(op_data));
779 /* enforce umask if acl disabled or MDS doesn't support umask */
780 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
781 it->it_create_mode &= ~current_umask();
783 if (it->it_op & IT_CREAT &&
784 ll_i2sbi(parent)->ll_flags & LL_SBI_FILE_SECCTX) {
785 rc = ll_dentry_init_security(dentry, it->it_create_mode,
787 &op_data->op_file_secctx_name,
788 &op_data->op_file_secctx,
789 &op_data->op_file_secctx_size);
791 GOTO(out, retval = ERR_PTR(rc));
793 *secctx = op_data->op_file_secctx;
794 if (secctxlen != NULL)
795 *secctxlen = op_data->op_file_secctx_size;
799 if (secctxlen != NULL)
803 /* ask for security context upon intent */
804 if (it->it_op & (IT_LOOKUP | IT_GETATTR | IT_OPEN)) {
805 /* get name of security xattr to request to server */
806 rc = ll_listsecurity(parent, secctx_name,
807 sizeof(secctx_name));
809 CDEBUG(D_SEC, "cannot get security xattr name for "
811 PFID(ll_inode2fid(parent)), rc);
813 op_data->op_file_secctx_name = secctx_name;
814 op_data->op_file_secctx_name_size = rc;
815 CDEBUG(D_SEC, "'%.*s' is security xattr for "DFID"\n",
816 rc, secctx_name, PFID(ll_inode2fid(parent)));
820 if (pca && pca->pca_dataset) {
821 struct pcc_dataset *dataset = pca->pca_dataset;
825 GOTO(out, retval = ERR_PTR(-ENOMEM));
827 lum->lmm_magic = LOV_USER_MAGIC_V1;
828 lum->lmm_pattern = LOV_PATTERN_F_RELEASED | LOV_PATTERN_RAID0;
829 op_data->op_data = lum;
830 op_data->op_data_size = sizeof(*lum);
831 op_data->op_archive_id = dataset->pccd_rwid;
833 rc = obd_fid_alloc(NULL, ll_i2mdexp(parent), &op_data->op_fid2,
836 GOTO(out, retval = ERR_PTR(rc));
838 rc = pcc_inode_create(parent->i_sb, dataset, &op_data->op_fid2,
841 GOTO(out, retval = ERR_PTR(rc));
843 it->it_flags |= MDS_OPEN_PCC;
846 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
847 &ll_md_blocking_ast, 0);
848 /* If the MDS allows the client to chgrp (CFS_SETGRP_PERM), but the
849 * client does not know which suppgid should be sent to the MDS, or
850 * some other(s) changed the target file's GID after this RPC sent
851 * to the MDS with the suppgid as the original GID, then we should
852 * try again with right suppgid. */
853 if (rc == -EACCES && it->it_op & IT_OPEN &&
854 it_disposition(it, DISP_OPEN_DENY)) {
855 struct mdt_body *body;
857 LASSERT(req != NULL);
859 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
860 if (op_data->op_suppgids[0] == body->mbo_gid ||
861 op_data->op_suppgids[1] == body->mbo_gid ||
862 !in_group_p(make_kgid(&init_user_ns, body->mbo_gid)))
863 GOTO(out, retval = ERR_PTR(-EACCES));
865 fid_zero(&op_data->op_fid2);
866 op_data->op_suppgids[1] = body->mbo_gid;
867 ptlrpc_req_finished(req);
869 ll_intent_release(it);
870 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
871 &ll_md_blocking_ast, 0);
875 GOTO(out, retval = ERR_PTR(rc));
877 /* dir layout may change */
878 ll_unlock_md_op_lsm(op_data);
879 rc = ll_lookup_it_finish(req, it, parent, &dentry,
880 secctx != NULL ? *secctx : NULL,
881 secctxlen != NULL ? *secctxlen : 0);
883 ll_intent_release(it);
884 GOTO(out, retval = ERR_PTR(rc));
887 if ((it->it_op & IT_OPEN) && dentry->d_inode &&
888 !S_ISREG(dentry->d_inode->i_mode) &&
889 !S_ISDIR(dentry->d_inode->i_mode)) {
890 ll_release_openhandle(dentry, it);
892 ll_lookup_finish_locks(it, dentry);
894 GOTO(out, retval = (dentry == save) ? NULL : dentry);
897 if (op_data != NULL && !IS_ERR(op_data)) {
898 if (secctx != NULL && secctxlen != NULL) {
899 /* caller needs sec ctx info, so reset it in op_data to
900 * prevent it from being freed */
901 op_data->op_file_secctx = NULL;
902 op_data->op_file_secctx_size = 0;
904 ll_finish_md_op_data(op_data);
910 ptlrpc_req_finished(req);
914 #ifdef HAVE_IOP_ATOMIC_OPEN
915 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
918 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
921 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), flags=%u\n",
922 dentry->d_name.len, dentry->d_name.name,
923 PFID(ll_inode2fid(parent)), parent, flags);
926 * Optimize away (CREATE && !OPEN). Let .create handle the race.
927 * but only if we have write permissions there, otherwise we need
928 * to proceed with lookup. LU-4185
930 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
931 (inode_permission(parent, MAY_WRITE | MAY_EXEC) == 0))
934 if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
938 de = ll_lookup_it(parent, dentry, itp, NULL, NULL, NULL);
941 ll_intent_release(itp);
946 #ifdef FMODE_CREATED /* added in Linux v4.18-rc1-20-g73a09dd */
947 # define ll_is_opened(o, f) ((f)->f_mode & FMODE_OPENED)
948 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL)
950 # define ll_set_created(o, f) \
952 (f)->f_mode |= FMODE_CREATED; \
956 # define ll_is_opened(o, f) (*(o))
957 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL, (o))
958 # define ll_last_arg , int *opened
959 # define ll_set_created(o, f) \
961 *(o) |= FILE_CREATED; \
967 * For cached negative dentry and new dentry, handle lookup/create/open
970 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
971 struct file *file, unsigned open_flags,
972 umode_t mode ll_last_arg)
974 struct lookup_intent *it;
976 long long lookup_flags = LOOKUP_OPEN;
979 struct ll_sb_info *sbi;
980 struct pcc_create_attach pca = { NULL, NULL };
984 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), file %p,"
985 "open_flags %x, mode %x opened %d\n",
986 dentry->d_name.len, dentry->d_name.name,
987 PFID(ll_inode2fid(dir)), dir, file, open_flags, mode,
988 ll_is_opened(opened, file));
990 /* Only negative dentries enter here */
991 LASSERT(dentry->d_inode == NULL);
993 if (!d_unhashed(dentry)) {
994 /* A valid negative dentry that just passed revalidation,
995 * there's little point to try and open it server-side,
996 * even though there's a minuscule chance it might succeed.
997 * Either way it's a valid race to just return -ENOENT here.
999 if (!(open_flags & O_CREAT))
1002 /* Otherwise we just unhash it to be rehashed afresh via
1003 * lookup if necessary
1008 OBD_ALLOC(it, sizeof(*it));
1012 it->it_op = IT_OPEN;
1013 if (open_flags & O_CREAT) {
1014 it->it_op |= IT_CREAT;
1015 lookup_flags |= LOOKUP_CREATE;
1016 sbi = ll_i2sbi(dir);
1017 /* Volatile file is used for HSM restore, so do not use PCC */
1018 if (!filename_is_volatile(dentry->d_name.name,
1019 dentry->d_name.len, NULL)) {
1020 struct pcc_matcher item;
1021 struct pcc_dataset *dataset;
1023 item.pm_uid = from_kuid(&init_user_ns, current_uid());
1024 item.pm_gid = from_kgid(&init_user_ns, current_gid());
1025 item.pm_projid = ll_i2info(dir)->lli_projid;
1026 item.pm_name = &dentry->d_name;
1027 dataset = pcc_dataset_match_get(&sbi->ll_pcc_super,
1029 pca.pca_dataset = dataset;
1032 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
1033 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
1034 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1036 /* Dentry added to dcache tree in ll_lookup_it */
1037 de = ll_lookup_it(dir, dentry, it, &secctx, &secctxlen, &pca);
1040 else if (de != NULL)
1043 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1046 if (it_disposition(it, DISP_OPEN_CREATE)) {
1047 /* Dentry instantiated in ll_create_it. */
1048 rc = ll_create_it(dir, dentry, it, secctx, secctxlen);
1049 security_release_secctx(secctx, secctxlen);
1051 /* We dget in ll_splice_alias. */
1057 rc = pcc_inode_create_fini(dentry->d_inode, &pca);
1061 GOTO(out_release, rc);
1064 ll_set_created(opened, file);
1066 /* Open the file with O_CREAT, but the file already
1067 * existed on MDT. This may happend in the case that
1068 * the LOOKUP ibits lock is revoked and the
1069 * corresponding dentry cache is deleted.
1070 * i.e. In the current Lustre, the truncate operation
1071 * will revoke the LOOKUP ibits lock, and the file
1072 * dentry cache will be invalidated. The following open
1073 * with O_CREAT flag will call into ->atomic_open, the
1074 * file was wrongly though as newly created file and
1075 * try to auto cache the file. So after client knows it
1076 * is not a DISP_OPEN_CREATE, it should cleanup the
1077 * already created PCC copy.
1079 pcc_create_attach_cleanup(dir->i_sb, &pca);
1082 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN)) {
1084 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1085 /* We cannot call open here as it might
1086 * deadlock. This case is unreachable in
1087 * practice because of OBD_CONNECT_NODEVOH. */
1088 rc = finish_no_open(file, de);
1090 file->private_data = it;
1091 rc = ll_finish_open(file, dentry, opened);
1092 /* We dget in ll_splice_alias. finish_open takes
1093 * care of dget for fd open.
1099 rc = finish_no_open(file, de);
1102 pcc_create_attach_cleanup(dir->i_sb, &pca);
1106 ll_intent_release(it);
1107 OBD_FREE(it, sizeof(*it));
1112 #else /* !HAVE_IOP_ATOMIC_OPEN */
1113 static struct lookup_intent *
1114 ll_convert_intent(struct open_intent *oit, int lookup_flags, bool is_readonly)
1116 struct lookup_intent *it;
1120 return ERR_PTR(-ENOMEM);
1122 if (lookup_flags & LOOKUP_OPEN) {
1123 it->it_op = IT_OPEN;
1124 /* Avoid file creation for ro bind mount point(is_readonly) */
1125 if ((lookup_flags & LOOKUP_CREATE) && !is_readonly)
1126 it->it_op |= IT_CREAT;
1127 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
1128 it->it_flags = ll_namei_to_lookup_intent_flag(oit->flags &
1129 ~(is_readonly ? O_CREAT : 0));
1130 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1132 it->it_op = IT_GETATTR;
1138 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
1139 struct nameidata *nd)
1144 if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
1145 struct lookup_intent *it;
1147 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
1148 it = ll_d2d(dentry)->lld_it;
1149 ll_d2d(dentry)->lld_it = NULL;
1152 * Optimize away (CREATE && !OPEN). Let .create handle
1153 * the race. But only if we have write permissions
1154 * there, otherwise we need to proceed with lookup.
1157 if ((nd->flags & LOOKUP_CREATE) &&
1158 !(nd->flags & LOOKUP_OPEN) &&
1159 (inode_permission(parent,
1160 MAY_WRITE | MAY_EXEC) == 0))
1163 it = ll_convert_intent(&nd->intent.open, nd->flags,
1164 (nd->path.mnt->mnt_flags & MNT_READONLY) ||
1165 (nd->path.mnt->mnt_sb->s_flags & SB_RDONLY));
1167 RETURN((struct dentry *)it);
1170 de = ll_lookup_it(parent, dentry, it, NULL, NULL, NULL);
1173 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
1174 if (dentry->d_inode &&
1175 it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
1176 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1177 /* We cannot call open here as it might
1178 * deadlock. This case is unreachable in
1179 * practice because of
1180 * OBD_CONNECT_NODEVOH. */
1184 nd->intent.open.file->private_data = it;
1185 filp = lookup_instantiate_filp(nd,
1191 de = (struct dentry *)filp;
1194 } else if (it_disposition(it, DISP_OPEN_CREATE)) {
1195 /* XXX This can only reliably work on assumption
1196 * that there are NO hashed negative dentries.*/
1197 ll_d2d(dentry)->lld_it = it;
1198 it = NULL; /* Will be freed in ll_create_nd */
1199 /* We absolutely depend on ll_create_nd to be
1200 * called to not leak this intent and possible
1201 * data attached to it */
1206 ll_intent_release(it);
1207 OBD_FREE(it, sizeof(*it));
1210 de = ll_lookup_it(parent, dentry, NULL, NULL, NULL, NULL);
1215 #endif /* HAVE_IOP_ATOMIC_OPEN */
1217 /* We depend on "mode" being set with the proper file type/umask by now */
1218 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
1220 struct inode *inode = NULL;
1221 struct ptlrpc_request *request = NULL;
1222 struct ll_sb_info *sbi = ll_i2sbi(dir);
1226 LASSERT(it && it->it_disposition);
1228 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
1229 request = it->it_request;
1230 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
1231 rc = ll_prep_inode(&inode, request, dir->i_sb, it);
1233 GOTO(out, inode = ERR_PTR(rc));
1235 /* Pause to allow for a race with concurrent access by fid */
1236 OBD_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_NODE_PAUSE, cfs_fail_val);
1238 /* We asked for a lock on the directory, but were granted a
1239 * lock on the inode. Since we finally have an inode pointer,
1240 * stuff it in the lock. */
1241 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
1242 PFID(ll_inode2fid(inode)), inode);
1243 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
1246 ptlrpc_req_finished(request);
1251 * By the time this is called, we already have created the directory cache
1252 * entry for the new file, but it is so far negative - it has no inode.
1254 * We defer creating the OBD object(s) until open, to keep the intent and
1255 * non-intent code paths similar, and also because we do not have the MDS
1256 * inode number before calling ll_create_node() (which is needed for LOV),
1257 * so we would need to do yet another RPC to the MDS to store the LOV EA
1258 * data on the MDS. If needed, we would pass the PACKED lmm as data and
1259 * lmm_size in datalen (the MDS still has code which will handle that).
1261 * If the create succeeds, we fill in the inode information
1262 * with d_instantiate().
1264 static int ll_create_it(struct inode *dir, struct dentry *dentry,
1265 struct lookup_intent *it,
1266 void *secctx, __u32 secctxlen)
1268 struct inode *inode;
1273 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
1274 dentry->d_name.len, dentry->d_name.name,
1275 PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
1277 rc = it_open_error(DISP_OPEN_CREATE, it);
1281 inode = ll_create_node(dir, it);
1283 RETURN(PTR_ERR(inode));
1285 if ((ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX) &&
1288 /* must be done before d_instantiate, because it calls
1289 * security_d_instantiate, which means a getxattr if security
1290 * context is not set yet */
1291 rc = security_inode_notifysecctx(inode, secctx, secctxlen);
1292 inode_unlock(inode);
1297 d_instantiate(dentry, inode);
1299 if (!(ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX)) {
1300 rc = ll_inode_init_security(dentry, inode, dir);
1305 ll_set_lock_data(ll_i2sbi(dir)->ll_md_exp, inode, it, &bits);
1306 if (bits & MDS_INODELOCK_LOOKUP)
1307 d_lustre_revalidate(dentry);
1312 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
1314 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
1318 if (body->mbo_valid & OBD_MD_FLMTIME &&
1319 body->mbo_mtime > inode->i_mtime.tv_sec) {
1321 "setting fid " DFID " mtime from %lld to %llu\n",
1322 PFID(ll_inode2fid(inode)),
1323 (s64)inode->i_mtime.tv_sec, body->mbo_mtime);
1324 inode->i_mtime.tv_sec = body->mbo_mtime;
1327 if (body->mbo_valid & OBD_MD_FLCTIME &&
1328 body->mbo_ctime > inode->i_ctime.tv_sec)
1329 inode->i_ctime.tv_sec = body->mbo_ctime;
1332 static int ll_new_node(struct inode *dir, struct dentry *dchild,
1333 const char *tgt, umode_t mode, int rdev, __u32 opc)
1335 struct qstr *name = &dchild->d_name;
1336 struct ptlrpc_request *request = NULL;
1337 struct md_op_data *op_data;
1338 struct inode *inode = NULL;
1339 struct ll_sb_info *sbi = ll_i2sbi(dir);
1344 if (unlikely(tgt != NULL))
1345 tgt_len = strlen(tgt) + 1;
1348 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1349 name->len, 0, opc, NULL);
1350 if (IS_ERR(op_data))
1351 GOTO(err_exit, err = PTR_ERR(op_data));
1353 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1354 err = ll_dentry_init_security(dchild, mode, &dchild->d_name,
1355 &op_data->op_file_secctx_name,
1356 &op_data->op_file_secctx,
1357 &op_data->op_file_secctx_size);
1359 GOTO(err_exit, err);
1362 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
1363 from_kuid(&init_user_ns, current_fsuid()),
1364 from_kgid(&init_user_ns, current_fsgid()),
1365 cfs_curproc_cap_pack(), rdev, &request);
1366 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 58, 0)
1368 * server < 2.12.58 doesn't pack default LMV in intent_getattr reply,
1369 * fetch default LMV here.
1371 if (unlikely(err == -EREMOTE)) {
1372 struct ll_inode_info *lli = ll_i2info(dir);
1373 struct lmv_user_md *lum;
1377 ptlrpc_req_finished(request);
1380 err2 = ll_dir_getstripe(dir, (void **)&lum, &lumsize, &request,
1381 OBD_MD_DEFAULT_MEA);
1382 ll_finish_md_op_data(op_data);
1385 struct lustre_md md = { NULL };
1387 md.body = req_capsule_server_get(&request->rq_pill,
1390 GOTO(err_exit, err = -EPROTO);
1392 OBD_ALLOC_PTR(md.default_lmv);
1393 if (!md.default_lmv)
1394 GOTO(err_exit, err = -ENOMEM);
1396 md.default_lmv->lsm_md_magic = lum->lum_magic;
1397 md.default_lmv->lsm_md_stripe_count =
1398 lum->lum_stripe_count;
1399 md.default_lmv->lsm_md_master_mdt_index =
1400 lum->lum_stripe_offset;
1401 md.default_lmv->lsm_md_hash_type = lum->lum_hash_type;
1403 err = ll_update_inode(dir, &md);
1404 md_free_lustre_md(sbi->ll_md_exp, &md);
1406 GOTO(err_exit, err);
1407 } else if (err2 == -ENODATA && lli->lli_default_lsm_md) {
1409 * If there are no default stripe EA on the MDT, but the
1410 * client has default stripe, then it probably means
1411 * default stripe EA has just been deleted.
1413 down_write(&lli->lli_lsm_sem);
1414 if (lli->lli_default_lsm_md)
1415 OBD_FREE_PTR(lli->lli_default_lsm_md);
1416 lli->lli_default_lsm_md = NULL;
1417 up_write(&lli->lli_lsm_sem);
1419 GOTO(err_exit, err);
1422 ptlrpc_req_finished(request);
1429 GOTO(err_exit, err);
1431 ll_update_times(request, dir);
1433 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_NEWNODE_PAUSE, cfs_fail_val);
1435 err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
1437 GOTO(err_exit, err);
1439 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1441 /* must be done before d_instantiate, because it calls
1442 * security_d_instantiate, which means a getxattr if security
1443 * context is not set yet */
1444 err = security_inode_notifysecctx(inode,
1445 op_data->op_file_secctx,
1446 op_data->op_file_secctx_size);
1447 inode_unlock(inode);
1449 GOTO(err_exit, err);
1452 d_instantiate(dchild, inode);
1454 if (!(sbi->ll_flags & LL_SBI_FILE_SECCTX)) {
1455 err = ll_inode_init_security(dchild, inode, dir);
1457 GOTO(err_exit, err);
1462 if (request != NULL)
1463 ptlrpc_req_finished(request);
1465 if (!IS_ERR_OR_NULL(op_data))
1466 ll_finish_md_op_data(op_data);
1471 static int ll_mknod(struct inode *dir, struct dentry *dchild, ll_umode_t mode,
1474 struct qstr *name = &dchild->d_name;
1475 ktime_t kstart = ktime_get();
1479 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p) mode %o dev %x\n",
1480 name->len, name->name, PFID(ll_inode2fid(dir)), dir,
1483 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1484 mode &= ~current_umask();
1486 switch (mode & S_IFMT) {
1495 err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
1506 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD,
1507 ktime_us_delta(ktime_get(), kstart));
1512 #ifdef HAVE_IOP_ATOMIC_OPEN
1514 * Plain create. Intent create is handled in atomic_open.
1516 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1517 umode_t mode, bool want_excl)
1519 ktime_t kstart = ktime_get();
1522 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1524 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), "
1525 "flags=%u, excl=%d\n", dentry->d_name.len,
1526 dentry->d_name.name, PFID(ll_inode2fid(dir)),
1527 dir, mode, want_excl);
1529 /* Using mknod(2) to create a regular file is designed to not recognize
1530 * volatile file name, so we use ll_mknod() here. */
1531 rc = ll_mknod(dir, dentry, mode, 0);
1533 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, unhashed %d\n",
1534 dentry->d_name.len, dentry->d_name.name, d_unhashed(dentry));
1537 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE,
1538 ktime_us_delta(ktime_get(), kstart));
1542 #else /* !HAVE_IOP_ATOMIC_OPEN */
1543 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1544 ll_umode_t mode, struct nameidata *nd)
1546 struct ll_dentry_data *lld = ll_d2d(dentry);
1547 struct lookup_intent *it = NULL;
1548 ktime_t kstart = ktime_get();
1551 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1557 /* LU-8559: use LUSTRE_OPC_CREATE for non atomic open case
1558 * so that volatile file name is recoginized.
1559 * Mknod(2), however, is designed to not recognize volatile
1560 * file name to avoid inode leak under orphan directory until
1562 return ll_new_node(dir, dentry, NULL, mode, 0,
1568 /* Was there an error? Propagate it! */
1569 if (it->it_status) {
1574 rc = ll_create_it(dir, dentry, it, NULL, 0);
1575 if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
1578 nd->intent.open.file->private_data = it;
1579 filp = lookup_instantiate_filp(nd, dentry, NULL);
1585 ll_intent_release(it);
1586 OBD_FREE(it, sizeof(*it));
1589 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE,
1590 ktime_us_delta(ktime_get(), kstart));
1594 #endif /* HAVE_IOP_ATOMIC_OPEN */
1596 static int ll_symlink(struct inode *dir, struct dentry *dchild,
1597 const char *oldpath)
1599 struct qstr *name = &dchild->d_name;
1600 ktime_t kstart = ktime_get();
1604 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), target=%.*s\n",
1605 name->len, name->name, PFID(ll_inode2fid(dir)),
1606 dir, 3000, oldpath);
1608 err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO, 0,
1609 LUSTRE_OPC_SYMLINK);
1612 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK,
1613 ktime_us_delta(ktime_get(), kstart));
1618 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1619 struct dentry *new_dentry)
1621 struct inode *src = old_dentry->d_inode;
1622 struct qstr *name = &new_dentry->d_name;
1623 struct ll_sb_info *sbi = ll_i2sbi(dir);
1624 struct ptlrpc_request *request = NULL;
1625 struct md_op_data *op_data;
1626 ktime_t kstart = ktime_get();
1630 CDEBUG(D_VFSTRACE, "VFS Op: inode="DFID"(%p), dir="DFID"(%p), "
1631 "target=%.*s\n", PFID(ll_inode2fid(src)), src,
1632 PFID(ll_inode2fid(dir)), dir, name->len, name->name);
1634 op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
1635 0, LUSTRE_OPC_ANY, NULL);
1636 if (IS_ERR(op_data))
1637 RETURN(PTR_ERR(op_data));
1639 err = md_link(sbi->ll_md_exp, op_data, &request);
1640 ll_finish_md_op_data(op_data);
1644 ll_update_times(request, dir);
1645 ll_stats_ops_tally(sbi, LPROC_LL_LINK,
1646 ktime_us_delta(ktime_get(), kstart));
1649 ptlrpc_req_finished(request);
1653 static int ll_mkdir(struct inode *dir, struct dentry *dchild, ll_umode_t mode)
1655 struct qstr *name = &dchild->d_name;
1656 ktime_t kstart = ktime_get();
1660 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1661 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1663 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1664 mode &= ~current_umask();
1666 mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
1668 err = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1670 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR,
1671 ktime_us_delta(ktime_get(), kstart));
1676 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1678 struct qstr *name = &dchild->d_name;
1679 struct ptlrpc_request *request = NULL;
1680 struct md_op_data *op_data;
1681 ktime_t kstart = ktime_get();
1686 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1687 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1689 if (unlikely(d_mountpoint(dchild)))
1692 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1693 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1694 if (IS_ERR(op_data))
1695 RETURN(PTR_ERR(op_data));
1697 if (dchild->d_inode != NULL)
1698 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1700 op_data->op_fid2 = op_data->op_fid3;
1701 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1702 ll_finish_md_op_data(op_data);
1704 ll_update_times(request, dir);
1706 ptlrpc_req_finished(request);
1708 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1709 ktime_us_delta(ktime_get(), kstart));
1716 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
1718 struct ptlrpc_request *request = NULL;
1719 struct md_op_data *op_data;
1720 ktime_t kstart = ktime_get();
1724 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1725 namelen, name, PFID(ll_inode2fid(dir)), dir);
1727 op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
1728 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1729 if (IS_ERR(op_data))
1730 RETURN(PTR_ERR(op_data));
1731 op_data->op_cli_flags |= CLI_RM_ENTRY;
1732 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1733 ll_finish_md_op_data(op_data);
1735 ll_update_times(request, dir);
1737 ptlrpc_req_finished(request);
1739 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1740 ktime_us_delta(ktime_get(), kstart));
1744 static int ll_unlink(struct inode *dir, struct dentry *dchild)
1746 struct qstr *name = &dchild->d_name;
1747 struct ptlrpc_request *request = NULL;
1748 struct md_op_data *op_data;
1749 struct mdt_body *body;
1750 ktime_t kstart = ktime_get();
1755 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1756 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1759 * XXX: unlink bind mountpoint maybe call to here,
1760 * just check it as vfs_unlink does.
1762 if (unlikely(d_mountpoint(dchild)))
1765 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
1766 LUSTRE_OPC_ANY, NULL);
1767 if (IS_ERR(op_data))
1768 RETURN(PTR_ERR(op_data));
1770 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1772 op_data->op_fid2 = op_data->op_fid3;
1773 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1774 ll_finish_md_op_data(op_data);
1779 * The server puts attributes in on the last unlink, use them to update
1780 * the link count so the inode can be freed immediately.
1782 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1783 if (body->mbo_valid & OBD_MD_FLNLINK)
1784 set_nlink(dchild->d_inode, body->mbo_nlink);
1786 ll_update_times(request, dir);
1789 ptlrpc_req_finished(request);
1791 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK,
1792 ktime_us_delta(ktime_get(), kstart));
1796 static int ll_rename(struct inode *src, struct dentry *src_dchild,
1797 struct inode *tgt, struct dentry *tgt_dchild
1798 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1799 , unsigned int flags
1803 struct qstr *src_name = &src_dchild->d_name;
1804 struct qstr *tgt_name = &tgt_dchild->d_name;
1805 struct ptlrpc_request *request = NULL;
1806 struct ll_sb_info *sbi = ll_i2sbi(src);
1807 struct md_op_data *op_data;
1808 ktime_t kstart = ktime_get();
1812 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1817 CDEBUG(D_VFSTRACE, "VFS Op:oldname=%.*s, src_dir="DFID
1818 "(%p), newname=%.*s, tgt_dir="DFID"(%p)\n",
1819 src_name->len, src_name->name,
1820 PFID(ll_inode2fid(src)), src, tgt_name->len,
1821 tgt_name->name, PFID(ll_inode2fid(tgt)), tgt);
1823 if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
1826 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1827 LUSTRE_OPC_ANY, NULL);
1828 if (IS_ERR(op_data))
1829 RETURN(PTR_ERR(op_data));
1831 if (src_dchild->d_inode != NULL)
1832 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1834 if (tgt_dchild->d_inode != NULL)
1835 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1837 err = md_rename(sbi->ll_md_exp, op_data,
1838 src_name->name, src_name->len,
1839 tgt_name->name, tgt_name->len, &request);
1840 ll_finish_md_op_data(op_data);
1842 ll_update_times(request, src);
1843 ll_update_times(request, tgt);
1846 ptlrpc_req_finished(request);
1849 d_move(src_dchild, tgt_dchild);
1850 ll_stats_ops_tally(sbi, LPROC_LL_RENAME,
1851 ktime_us_delta(ktime_get(), kstart));
1857 const struct inode_operations ll_dir_inode_operations = {
1859 #ifdef HAVE_IOP_ATOMIC_OPEN
1860 .atomic_open = ll_atomic_open,
1862 .lookup = ll_lookup_nd,
1863 .create = ll_create_nd,
1864 /* We need all these non-raw things for NFSD, to not patch it. */
1865 .unlink = ll_unlink,
1868 .symlink = ll_symlink,
1870 .rename = ll_rename,
1871 .setattr = ll_setattr,
1872 .getattr = ll_getattr,
1873 .permission = ll_inode_permission,
1874 #ifdef HAVE_IOP_XATTR
1875 .setxattr = ll_setxattr,
1876 .getxattr = ll_getxattr,
1877 .removexattr = ll_removexattr,
1879 .listxattr = ll_listxattr,
1880 #ifdef HAVE_IOP_GET_ACL
1881 .get_acl = ll_get_acl,
1883 #ifdef HAVE_IOP_SET_ACL
1884 .set_acl = ll_set_acl,
1888 const struct inode_operations ll_special_inode_operations = {
1889 .setattr = ll_setattr,
1890 .getattr = ll_getattr,
1891 .permission = ll_inode_permission,
1892 #ifdef HAVE_IOP_XATTR
1893 .setxattr = ll_setxattr,
1894 .getxattr = ll_getxattr,
1895 .removexattr = ll_removexattr,
1897 .listxattr = ll_listxattr,
1898 #ifdef HAVE_IOP_GET_ACL
1899 .get_acl = ll_get_acl,
1901 #ifdef HAVE_IOP_SET_ACL
1902 .set_acl = ll_set_acl,