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/
33 #include <linux/sched.h>
35 #include <linux/file.h>
36 #include <linux/quotaops.h>
37 #include <linux/highmem.h>
38 #include <linux/pagemap.h>
39 #include <linux/user_namespace.h>
40 #include <linux/uidgid.h>
42 #define DEBUG_SUBSYSTEM S_LLITE
44 #include <obd_support.h>
45 #include <lustre_fid.h>
46 #include <lustre_dlm.h>
47 #include "llite_internal.h"
49 #ifndef HAVE_USER_NAMESPACE_ARG
50 #define ll_create_nd(ns, dir, de, mode, ex) ll_create_nd(dir, de, mode, ex)
51 #define ll_mkdir(ns, dir, dch, mode) ll_mkdir(dir, dch, mode)
52 #define ll_mknod(ns, dir, dch, mode, rd) ll_mknod(dir, dch, mode, rd)
53 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
54 #define ll_rename(ns, src, sdc, tgt, tdc, fl) ll_rename(src, sdc, tgt, tdc, fl)
56 #define ll_rename(ns, src, sdc, tgt, tdc) ll_rename(src, sdc, tgt, tdc)
57 #endif /* HAVE_IOPS_RENAME_WITH_FLAGS */
58 #define ll_symlink(nd, dir, dch, old) ll_symlink(dir, dch, old)
61 static int ll_create_it(struct inode *dir, struct dentry *dentry,
62 struct lookup_intent *it,
63 void *secctx, __u32 secctxlen, bool encrypt,
64 void *encctx, __u32 encctxlen, unsigned int open_flags);
66 /* called from iget5_locked->find_inode() under inode_lock spinlock */
67 static int ll_test_inode(struct inode *inode, void *opaque)
69 struct ll_inode_info *lli = ll_i2info(inode);
70 struct lustre_md *md = opaque;
72 if (unlikely(!(md->body->mbo_valid & OBD_MD_FLID))) {
73 CERROR("MDS body missing FID\n");
77 if (!lu_fid_eq(&lli->lli_fid, &md->body->mbo_fid1))
83 static int ll_set_inode(struct inode *inode, void *opaque)
85 struct ll_inode_info *lli = ll_i2info(inode);
86 struct mdt_body *body = ((struct lustre_md *)opaque)->body;
88 if (unlikely(!(body->mbo_valid & OBD_MD_FLID))) {
89 CERROR("MDS body missing FID\n");
93 lli->lli_fid = body->mbo_fid1;
94 if (unlikely(!(body->mbo_valid & OBD_MD_FLTYPE))) {
95 CERROR("Can not initialize inode "DFID" without object type: "
97 PFID(&lli->lli_fid), body->mbo_valid);
101 inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mbo_mode & S_IFMT);
102 if (unlikely(inode->i_mode == 0)) {
103 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
114 * Get an inode by inode number(@hash), which is already instantiated by
115 * the intent lookup).
117 struct inode *ll_iget(struct super_block *sb, ino_t hash,
118 struct lustre_md *md)
126 inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
128 RETURN(ERR_PTR(-ENOMEM));
130 if (inode->i_state & I_NEW) {
131 rc = ll_read_inode2(inode, md);
132 if (rc == 0 && S_ISREG(inode->i_mode) &&
133 ll_i2info(inode)->lli_clob == NULL)
134 rc = cl_file_inode_init(inode, md);
137 /* Let's clear directory lsm here, otherwise
138 * make_bad_inode() will reset the inode mode
139 * to regular, then ll_clear_inode will not
140 * be able to clear lsm_md */
141 if (S_ISDIR(inode->i_mode))
142 ll_dir_clear_lsm_md(inode);
143 make_bad_inode(inode);
144 unlock_new_inode(inode);
148 inode_has_no_xattr(inode);
149 unlock_new_inode(inode);
151 } else if (is_bad_inode(inode)) {
153 inode = ERR_PTR(-ESTALE);
154 } else if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
155 rc = ll_update_inode(inode, md);
156 CDEBUG(D_VFSTRACE, "got inode: "DFID"(%p): rc = %d\n",
157 PFID(&md->body->mbo_fid1), inode, rc);
159 if (S_ISDIR(inode->i_mode))
160 ll_dir_clear_lsm_md(inode);
169 /* mark negative sub file dentries invalid and prune unused dentries */
170 static void ll_prune_negative_children(struct inode *dir)
172 struct dentry *dentry;
173 struct dentry *child;
178 spin_lock(&dir->i_lock);
179 hlist_for_each_entry(dentry, &dir->i_dentry, d_alias) {
180 spin_lock(&dentry->d_lock);
181 d_for_each_child(child, dentry) {
185 spin_lock_nested(&child->d_lock, DENTRY_D_LOCK_NESTED);
186 if (lld_is_init(child))
187 ll_d2d(child)->lld_invalid = 1;
188 if (!ll_d_count(child)) {
191 spin_unlock(&child->d_lock);
192 spin_unlock(&dentry->d_lock);
193 spin_unlock(&dir->i_lock);
195 CDEBUG(D_DENTRY, "prune negative dentry %pd\n",
201 spin_unlock(&child->d_lock);
203 spin_unlock(&dentry->d_lock);
205 spin_unlock(&dir->i_lock);
210 int ll_test_inode_by_fid(struct inode *inode, void *opaque)
212 return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
215 static int ll_dom_lock_cancel(struct inode *inode, struct ldlm_lock *lock)
218 struct ll_inode_info *lli = ll_i2info(inode);
223 env = cl_env_get(&refcheck);
225 RETURN(PTR_ERR(env));
227 CFS_FAIL_TIMEOUT(OBD_FAIL_LDLM_REPLAY_PAUSE, cfs_fail_val);
229 /* reach MDC layer to flush data under the DoM ldlm lock */
230 rc = cl_object_flush(env, lli->lli_clob, lock);
231 if (rc == -ENODATA) {
232 CDEBUG(D_INODE, "inode "DFID" layout has no DoM stripe\n",
233 PFID(ll_inode2fid(inode)));
234 /* most likely result of layout change, do nothing */
238 cl_env_put(env, &refcheck);
242 static void ll_lock_cancel_bits(struct ldlm_lock *lock, __u64 to_cancel)
244 struct inode *inode = ll_inode_from_resource_lock(lock);
245 struct ll_inode_info *lli;
246 __u64 bits = to_cancel;
252 /* That means the inode is evicted most likely and may cause
253 * the skipping of lock cleanups below, so print the message
256 if (lock->l_resource->lr_lvb_inode)
258 "can't take inode for the lock (%sevicted)",
259 lock->l_resource->lr_lvb_inode->i_state &
260 I_FREEING ? "" : "not ");
264 if (!fid_res_name_eq(ll_inode2fid(inode),
265 &lock->l_resource->lr_name)) {
266 LDLM_ERROR(lock, "data mismatch with object "DFID"(%p)",
267 PFID(ll_inode2fid(inode)), inode);
271 if (bits & MDS_INODELOCK_XATTR) {
272 ll_xattr_cache_empty(inode);
273 bits &= ~MDS_INODELOCK_XATTR;
276 /* For OPEN locks we differentiate between lock modes
277 * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
278 if (bits & MDS_INODELOCK_OPEN)
279 ll_have_md_lock(lock->l_conn_export, inode, &bits,
282 if (bits & MDS_INODELOCK_OPEN) {
285 switch (lock->l_req_mode) {
296 LDLM_ERROR(lock, "bad lock mode for OPEN lock");
300 ll_md_real_close(inode, fmode);
302 bits &= ~MDS_INODELOCK_OPEN;
305 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
306 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM |
308 ll_have_md_lock(lock->l_conn_export, inode, &bits, LCK_MINMODE);
310 if (bits & MDS_INODELOCK_DOM) {
311 rc = ll_dom_lock_cancel(inode, lock);
313 CDEBUG(D_INODE, "cannot flush DoM data "
315 PFID(ll_inode2fid(inode)), rc);
318 if (bits & MDS_INODELOCK_LAYOUT) {
319 struct cl_object_conf conf = {
320 .coc_opc = OBJECT_CONF_INVALIDATE,
325 rc = ll_layout_conf(inode, &conf);
327 CDEBUG(D_INODE, "cannot invalidate layout of "
329 PFID(ll_inode2fid(inode)), rc);
332 lli = ll_i2info(inode);
334 if (bits & MDS_INODELOCK_UPDATE)
335 set_bit(LLIF_UPDATE_ATIME, &lli->lli_flags);
337 if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
338 CDEBUG(D_INODE, "invalidating inode "DFID" lli = %p, "
339 "pfid = "DFID"\n", PFID(ll_inode2fid(inode)),
340 lli, PFID(&lli->lli_pfid));
341 truncate_inode_pages(inode->i_mapping, 0);
343 if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
344 struct inode *master_inode = NULL;
347 /* This is slave inode, since all of the child dentry
348 * is connected on the master inode, so we have to
349 * invalidate the negative children on master inode */
350 CDEBUG(D_INODE, "Invalidate s"DFID" m"DFID"\n",
351 PFID(ll_inode2fid(inode)), PFID(&lli->lli_pfid));
353 hash = cl_fid_build_ino(&lli->lli_pfid,
354 ll_need_32bit_api(ll_i2sbi(inode)));
356 /* Do not lookup the inode with ilookup5, otherwise
357 * it will cause dead lock,
358 * 1. Client1 send chmod req to the MDT0, then on MDT0,
359 * it enqueues master and all of its slaves lock,
360 * (mdt_attr_set() -> mdt_lock_slaves()), after gets
361 * master and stripe0 lock, it will send the enqueue
362 * req (for stripe1) to MDT1, then MDT1 finds the lock
363 * has been granted to client2. Then MDT1 sends blocking
365 * 2. At the same time, client2 tries to unlink
366 * the striped dir (rm -rf striped_dir), and during
367 * lookup, it will hold the master inode of the striped
368 * directory, whose inode state is NEW, then tries to
369 * revalidate all of its slaves, (ll_prep_inode()->
370 * ll_iget()->ll_read_inode2()-> ll_update_inode().).
371 * And it will be blocked on the server side because
373 * 3. Then the client get the blocking_ast req, cancel
374 * the lock, but being blocked if using ->ilookup5()),
375 * because master inode state is NEW. */
376 master_inode = ilookup5_nowait(inode->i_sb, hash,
377 ll_test_inode_by_fid,
378 (void *)&lli->lli_pfid);
380 ll_prune_negative_children(master_inode);
384 ll_prune_negative_children(inode);
388 /* at umount s_root becomes NULL */
389 if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
390 inode->i_sb->s_root && !is_root_inode(inode))
391 ll_prune_aliases(inode);
393 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM))
394 forget_all_cached_acls(inode);
400 /* Check if the given lock may be downgraded instead of canceling and
401 * that convert is really needed. */
402 static int ll_md_need_convert(struct ldlm_lock *lock)
404 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
406 __u64 wanted = lock->l_policy_data.l_inodebits.cancel_bits;
407 __u64 bits = lock->l_policy_data.l_inodebits.bits & ~wanted;
408 enum ldlm_mode mode = LCK_MINMODE;
410 if (!lock->l_conn_export ||
411 !exp_connect_lock_convert(lock->l_conn_export))
414 if (!wanted || !bits || ldlm_is_cancel(lock))
417 /* do not convert locks other than DOM for now */
418 if (!((bits | wanted) & MDS_INODELOCK_DOM))
421 /* We may have already remaining bits in some other lock so
422 * lock convert will leave us just extra lock for the same bit.
423 * Check if client has other lock with the same bits and the same
424 * or lower mode and don't convert if any.
426 switch (lock->l_req_mode) {
440 /* do not convert other modes */
444 /* is lock is too old to be converted? */
445 lock_res_and_lock(lock);
446 if (ktime_after(ktime_get(),
447 ktime_add(lock->l_last_used, ns->ns_dirty_age_limit))) {
448 unlock_res_and_lock(lock);
451 unlock_res_and_lock(lock);
453 inode = ll_inode_from_resource_lock(lock);
454 ll_have_md_lock(lock->l_conn_export, inode, &bits, mode);
459 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *ld,
460 void *data, int flag)
462 struct lustre_handle lockh;
468 case LDLM_CB_BLOCKING:
470 __u64 cancel_flags = LCF_ASYNC;
472 /* if lock convert is not needed then still have to
473 * pass lock via ldlm_cli_convert() to keep all states
474 * correct, set cancel_bits to full lock bits to cause
475 * full cancel to happen.
477 if (!ll_md_need_convert(lock)) {
478 lock_res_and_lock(lock);
479 lock->l_policy_data.l_inodebits.cancel_bits =
480 lock->l_policy_data.l_inodebits.bits;
481 unlock_res_and_lock(lock);
483 rc = ldlm_cli_convert(lock, cancel_flags);
486 /* continue with cancel otherwise */
487 ldlm_lock2handle(lock, &lockh);
488 rc = ldlm_cli_cancel(&lockh, cancel_flags);
490 CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
495 case LDLM_CB_CANCELING:
497 __u64 to_cancel = lock->l_policy_data.l_inodebits.bits;
499 /* Nothing to do for non-granted locks */
500 if (!ldlm_is_granted(lock))
503 /* If 'ld' is supplied then bits to be cancelled are passed
504 * implicitly by lock converting and cancel_bits from 'ld'
505 * should be used. Otherwise full cancel is being performed
506 * and lock inodebits are used.
508 * Note: we cannot rely on cancel_bits in lock itself at this
509 * moment because they can be changed by concurrent thread,
510 * so ldlm_cli_inodebits_convert() pass cancel bits implicitly
514 /* partial bits cancel allowed only during convert */
515 LASSERT(ldlm_is_converting(lock));
516 /* mask cancel bits by lock bits so only no any unused
517 * bits are passed to ll_lock_cancel_bits()
519 to_cancel &= ld->l_policy_data.l_inodebits.cancel_bits;
521 ll_lock_cancel_bits(lock, to_cancel);
531 __u32 ll_i2suppgid(struct inode *i)
533 if (in_group_p(i->i_gid))
534 return (__u32)from_kgid(&init_user_ns, i->i_gid);
536 return (__u32) __kgid_val(INVALID_GID);
539 /* Pack the required supplementary groups into the supplied groups array. */
540 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
543 LASSERT(suppgids != NULL);
545 suppgids[0] = ll_i2suppgid(i1);
548 suppgids[1] = ll_i2suppgid(i2);
554 * try to reuse three types of dentry:
555 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
556 * by concurrent .revalidate).
557 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
558 * be cleared by others calling d_lustre_revalidate).
559 * 3. DISCONNECTED alias.
561 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
563 struct dentry *alias, *discon_alias, *invalid_alias;
565 if (hlist_empty(&inode->i_dentry))
568 discon_alias = invalid_alias = NULL;
570 spin_lock(&inode->i_lock);
571 hlist_for_each_entry(alias, &inode->i_dentry, d_alias) {
572 LASSERT(alias != dentry);
574 spin_lock(&alias->d_lock);
575 if ((alias->d_flags & DCACHE_DISCONNECTED) &&
576 S_ISDIR(inode->i_mode))
577 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
578 discon_alias = alias;
579 else if (alias->d_parent == dentry->d_parent &&
580 alias->d_name.hash == dentry->d_name.hash &&
581 alias->d_name.len == dentry->d_name.len &&
582 memcmp(alias->d_name.name, dentry->d_name.name,
583 dentry->d_name.len) == 0)
584 invalid_alias = alias;
585 spin_unlock(&alias->d_lock);
590 alias = invalid_alias ?: discon_alias ?: NULL;
592 spin_lock(&alias->d_lock);
594 spin_unlock(&alias->d_lock);
596 spin_unlock(&inode->i_lock);
602 * Similar to d_splice_alias(), but lustre treats invalid alias
603 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
605 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
610 new = ll_find_alias(inode, de);
612 if (!ll_d_setup(new, true))
613 return ERR_PTR(-ENOMEM);
617 "Reuse dentry %p inode %p refc %d flags %#x\n",
618 new, new->d_inode, ll_d_count(new), new->d_flags);
622 if (!ll_d_setup(de, false))
623 return ERR_PTR(-ENOMEM);
626 /* this needs only to be done for foreign symlink dirs as
627 * DCACHE_SYMLINK_TYPE is already set by d_flags_for_inode()
628 * kernel routine for files with symlink ops (ie, real symlink)
630 if (inode && S_ISDIR(inode->i_mode) &&
631 ll_sbi_has_foreign_symlink(ll_i2sbi(inode)) &&
632 #ifdef HAVE_IOP_GET_LINK
633 inode->i_op->get_link) {
635 inode->i_op->follow_link) {
637 CDEBUG(D_INFO, "%s: inode "DFID": faking foreign dir as a symlink\n",
638 ll_i2sbi(inode)->ll_fsname, PFID(ll_inode2fid(inode)));
639 spin_lock(&de->d_lock);
640 /* like d_flags_for_inode() already does for files */
641 de->d_flags = (de->d_flags & ~DCACHE_ENTRY_TYPE) |
643 spin_unlock(&de->d_lock);
646 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
647 de, de->d_inode, ll_d_count(de), de->d_flags);
651 static int ll_lookup_it_finish(struct ptlrpc_request *request,
652 struct lookup_intent *it,
653 struct inode *parent, struct dentry **de,
654 void *secctx, __u32 secctxlen,
655 void *encctx, __u32 encctxlen,
656 ktime_t kstart, bool encrypt)
658 struct inode *inode = NULL;
661 struct dentry *alias;
664 /* NB 1 request reference will be taken away by ll_intent_lock()
666 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
668 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
669 struct req_capsule *pill = &request->rq_pill;
670 struct mdt_body *body = req_capsule_server_get(pill,
673 rc = ll_prep_inode(&inode, &request->rq_pill, (*de)->d_sb, it);
677 /* If encryption context was returned by MDT, put it in
678 * inode now to save an extra getxattr and avoid deadlock.
680 if (body->mbo_valid & OBD_MD_ENCCTX) {
681 encctx = req_capsule_server_get(pill, &RMF_FILE_ENCCTX);
682 encctxlen = req_capsule_get_size(pill,
688 "server returned encryption ctx for "DFID"\n",
689 PFID(ll_inode2fid(inode)));
690 rc = ll_xattr_cache_insert(inode,
691 xattr_for_enc(inode),
694 CWARN("%s: cannot set enc ctx for "DFID": rc = %d\n",
695 ll_i2sbi(inode)->ll_fsname,
696 PFID(ll_inode2fid(inode)), rc);
698 rc = llcrypt_prepare_readdir(inode);
701 "cannot get enc info for "DFID": rc = %d\n",
702 PFID(ll_inode2fid(inode)), rc);
707 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
708 /* OPEN can return data if lock has DoM+LAYOUT bits set */
709 if (it->it_op & IT_OPEN &&
710 bits & MDS_INODELOCK_DOM && bits & MDS_INODELOCK_LAYOUT)
711 ll_dom_finish_open(inode, request);
713 /* We used to query real size from OSTs here, but actually
714 * this is not needed. For stat() calls size would be updated
715 * from subsequent do_revalidate()->ll_inode_revalidate_it() in
717 * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
718 * Everybody else who needs correct file size would call
719 * ll_glimpse_size or some equivalent themselves anyway.
723 /* If security context was returned by MDT, put it in
724 * inode now to save an extra getxattr from security hooks,
725 * and avoid deadlock.
727 if (body->mbo_valid & OBD_MD_SECCTX) {
728 secctx = req_capsule_server_get(pill, &RMF_FILE_SECCTX);
729 secctxlen = req_capsule_get_size(pill,
734 CDEBUG(D_SEC, "server returned security context"
736 PFID(ll_inode2fid(inode)));
739 /* resume normally on error */
740 ll_inode_notifysecctx(inode, secctx, secctxlen);
743 /* Only hash *de if it is unhashed (new dentry).
744 * Atoimc_open may passin hashed dentries for open.
746 alias = ll_splice_alias(inode, *de);
748 GOTO(out, rc = PTR_ERR(alias));
752 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
753 /* We have the "lookup" lock, so unhide dentry */
754 if (bits & MDS_INODELOCK_LOOKUP)
755 d_lustre_revalidate(*de);
756 /* open may not fetch LOOKUP lock, update dir depth/dmv anyway
757 * in case it's used uninitialized.
759 if (S_ISDIR(inode->i_mode))
760 ll_update_dir_depth_dmv(parent, *de);
763 rc = llcrypt_prepare_readdir(inode);
767 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
769 * If file was created on the server, the dentry is revalidated
770 * in ll_create_it if the lock allows for it.
772 /* Check that parent has UPDATE lock. */
773 struct lookup_intent parent_it = {
775 .it_lock_handle = 0 };
776 struct lu_fid fid = ll_i2info(parent)->lli_fid;
778 /* If it is striped directory, get the real stripe parent */
779 if (unlikely(ll_dir_striped(parent))) {
780 down_read(&ll_i2info(parent)->lli_lsm_sem);
781 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
782 ll_i2info(parent)->lli_lsm_obj,
784 (*de)->d_name.len, &fid);
785 up_read(&ll_i2info(parent)->lli_lsm_sem);
790 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
792 d_lustre_revalidate(*de);
793 ll_intent_release(&parent_it);
797 if (it_disposition(it, DISP_OPEN_CREATE)) {
798 ll_stats_ops_tally(ll_i2sbi(parent), LPROC_LL_MKNOD,
799 ktime_us_delta(ktime_get(), kstart));
805 if (rc != 0 && it->it_op & IT_OPEN) {
806 ll_intent_drop_lock(it);
807 ll_open_cleanup((*de)->d_sb, &request->rq_pill);
813 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
814 struct lookup_intent *it,
815 void **secctx, __u32 *secctxlen,
817 struct pcc_create_attach *pca,
819 void **encctx, __u32 *encctxlen)
821 ktime_t kstart = ktime_get();
822 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
823 struct dentry *save = dentry, *retval;
824 struct ptlrpc_request *req = NULL;
825 struct md_op_data *op_data = NULL;
826 struct lov_user_md *lum = NULL;
827 struct ll_sb_info *sbi = ll_i2sbi(parent);
830 struct llcrypt_name fname;
834 if (dentry->d_name.len > sbi->ll_namelen)
835 RETURN(ERR_PTR(-ENAMETOOLONG));
837 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), intent=%s\n",
838 dentry, PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
840 if (d_mountpoint(dentry))
841 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
843 if (it == NULL || it->it_op == IT_GETXATTR)
846 if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
847 rc = ll_revalidate_statahead(parent, &dentry, 0);
849 RETURN(dentry == save ? NULL : dentry);
852 if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE &&
853 dentry->d_sb->s_flags & SB_RDONLY)
854 RETURN(ERR_PTR(-EROFS));
856 if (it->it_op & IT_CREAT)
857 opc = LUSTRE_OPC_CREATE;
859 opc = LUSTRE_OPC_LOOKUP;
861 rc = ll_prepare_lookup(parent, dentry, &fname, &fid);
863 RETURN(rc != -ENOENT ? ERR_PTR(rc) : NULL);
865 op_data = ll_prep_md_op_data(NULL, parent, NULL, fname.disk_name.name,
866 fname.disk_name.len, 0, opc, NULL);
867 if (IS_ERR(op_data)) {
868 llcrypt_free_filename(&fname);
869 RETURN(ERR_CAST(op_data));
871 if (!fid_is_zero(&fid)) {
872 op_data->op_fid2 = fid;
873 op_data->op_bias = MDS_FID_OP;
874 if (it->it_op & IT_OPEN)
875 it->it_flags |= MDS_OPEN_BY_FID;
878 /* enforce umask if acl disabled or MDS doesn't support umask */
879 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
880 it->it_create_mode &= ~current_umask();
882 if (it->it_op & IT_CREAT &&
883 test_bit(LL_SBI_FILE_SECCTX, sbi->ll_flags)) {
884 rc = ll_dentry_init_security(dentry, it->it_create_mode,
886 &op_data->op_file_secctx_name,
887 &op_data->op_file_secctx_name_size,
888 &op_data->op_file_secctx,
889 &op_data->op_file_secctx_size,
890 &op_data->op_file_secctx_slot);
892 GOTO(out, retval = ERR_PTR(rc));
894 *secctx = op_data->op_file_secctx;
895 if (secctxlen != NULL)
896 *secctxlen = op_data->op_file_secctx_size;
897 if (secctxslot != NULL)
898 *secctxslot = op_data->op_file_secctx_slot;
902 if (secctxlen != NULL)
904 if (secctxslot != NULL)
907 if (it->it_op & IT_CREAT && encrypt) {
908 if (unlikely(filename_is_volatile(dentry->d_name.name,
909 dentry->d_name.len, NULL))) {
910 /* get encryption context from reference file */
911 int ctx_size = LLCRYPT_ENC_CTX_SIZE;
912 struct lustre_sb_info *lsi;
913 struct file *ref_file;
914 struct inode *ref_inode;
917 rc = volatile_ref_file(dentry->d_name.name,
921 GOTO(out, retval = ERR_PTR(rc));
923 ref_inode = file_inode(ref_file);
926 GOTO(inherit, rc = -EINVAL);
929 lsi = s2lsi(ref_inode->i_sb);
932 OBD_ALLOC(ctx, ctx_size);
934 GOTO(out, retval = ERR_PTR(-ENOMEM));
936 #ifdef CONFIG_LL_ENCRYPTION
937 rc = lsi->lsi_cop->get_context(ref_inode,
939 #elif defined(HAVE_LUSTRE_CRYPTO)
940 rc = ref_inode->i_sb->s_cop->get_context(ref_inode,
946 OBD_FREE(ctx, ctx_size);
952 OBD_FREE(ctx, ctx_size);
956 op_data->op_file_encctx_size = rc;
957 if (rc == ctx_size) {
958 op_data->op_file_encctx = ctx;
960 OBD_ALLOC(op_data->op_file_encctx,
961 op_data->op_file_encctx_size);
962 if (!op_data->op_file_encctx) {
963 OBD_FREE(ctx, ctx_size);
964 GOTO(out, retval = ERR_PTR(-ENOMEM));
966 memcpy(op_data->op_file_encctx, ctx,
967 op_data->op_file_encctx_size);
968 OBD_FREE(ctx, ctx_size);
972 rc = llcrypt_inherit_context(parent, NULL, op_data,
975 GOTO(out, retval = ERR_PTR(rc));
978 *encctx = op_data->op_file_encctx;
979 if (encctxlen != NULL)
980 *encctxlen = op_data->op_file_encctx_size;
984 if (encctxlen != NULL)
988 /* ask for security context upon intent:
989 * get name of security xattr to request to server
991 if (it->it_op & (IT_LOOKUP | IT_GETATTR | IT_OPEN))
992 op_data->op_file_secctx_name_size =
993 ll_secctx_name_get(sbi, &op_data->op_file_secctx_name);
995 if (pca && pca->pca_dataset) {
998 GOTO(out, retval = ERR_PTR(-ENOMEM));
1000 lum->lmm_magic = LOV_USER_MAGIC_V1;
1001 lum->lmm_pattern = LOV_PATTERN_F_RELEASED | LOV_PATTERN_RAID0;
1002 op_data->op_data = lum;
1003 op_data->op_data_size = sizeof(*lum);
1004 op_data->op_archive_id = pca->pca_dataset->pccd_rwid;
1005 it->it_flags |= MDS_OPEN_PCC;
1008 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
1009 &ll_md_blocking_ast, 0);
1010 /* If the MDS allows the client to chgrp (CFS_SETGRP_PERM), but the
1011 * client does not know which suppgid should be sent to the MDS, or
1012 * some other(s) changed the target file's GID after this RPC sent
1013 * to the MDS with the suppgid as the original GID, then we should
1014 * try again with right suppgid. */
1015 if (rc == -EACCES && it->it_op & IT_OPEN &&
1016 it_disposition(it, DISP_OPEN_DENY)) {
1017 struct mdt_body *body;
1019 LASSERT(req != NULL);
1021 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1022 if (op_data->op_suppgids[0] == body->mbo_gid ||
1023 op_data->op_suppgids[1] == body->mbo_gid ||
1024 !in_group_p(make_kgid(&init_user_ns, body->mbo_gid)))
1025 GOTO(out, retval = ERR_PTR(-EACCES));
1027 fid_zero(&op_data->op_fid2);
1028 op_data->op_suppgids[1] = body->mbo_gid;
1029 ptlrpc_req_finished(req);
1031 ll_intent_release(it);
1032 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
1033 &ll_md_blocking_ast, 0);
1037 GOTO(out, retval = ERR_PTR(rc));
1039 if (pca && pca->pca_dataset) {
1040 rc = pcc_inode_create(parent->i_sb, pca->pca_dataset,
1044 GOTO(out, retval = ERR_PTR(rc));
1047 /* dir layout may change */
1048 ll_unlock_md_op_lsm(op_data);
1049 rc = ll_lookup_it_finish(req, it, parent, &dentry,
1050 secctx != NULL ? *secctx : NULL,
1051 secctxlen != NULL ? *secctxlen : 0,
1052 encctx != NULL ? *encctx : NULL,
1053 encctxlen != NULL ? *encctxlen : 0,
1056 ll_intent_release(it);
1057 GOTO(out, retval = ERR_PTR(rc));
1060 if ((it->it_op & IT_OPEN) && dentry->d_inode &&
1061 !S_ISREG(dentry->d_inode->i_mode) &&
1062 !S_ISDIR(dentry->d_inode->i_mode)) {
1063 ll_release_openhandle(dentry, it);
1065 ll_lookup_finish_locks(it, dentry);
1067 GOTO(out, retval = (dentry == save) ? NULL : dentry);
1070 if (op_data != NULL && !IS_ERR(op_data)) {
1071 if (secctx != NULL && secctxlen != NULL) {
1072 /* caller needs sec ctx info, so reset it in op_data to
1073 * prevent it from being freed */
1074 op_data->op_file_secctx = NULL;
1075 op_data->op_file_secctx_size = 0;
1077 if (encctx != NULL && encctxlen != NULL &&
1078 it->it_op & IT_CREAT && encrypt) {
1079 /* caller needs enc ctx info, so reset it in op_data to
1080 * prevent it from being freed
1082 op_data->op_file_encctx = NULL;
1083 op_data->op_file_encctx_size = 0;
1085 llcrypt_free_filename(&fname);
1086 ll_finish_md_op_data(op_data);
1092 ptlrpc_req_finished(req);
1096 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
1099 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
1100 struct dentry *de = NULL;
1102 /* VFS has locked the inode before calling this */
1103 ll_set_inode_lock_owner(parent);
1105 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), flags=%u\n",
1106 dentry, PFID(ll_inode2fid(parent)), parent, flags);
1109 * Optimize away (CREATE && !OPEN). Let .create handle the race.
1110 * but only if we have write permissions there, otherwise we need
1111 * to proceed with lookup. LU-4185
1113 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
1114 (inode_permission(&nop_mnt_idmap,
1115 parent, MAY_WRITE | MAY_EXEC) == 0))
1118 if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
1122 de = ll_lookup_it(parent, dentry, itp, NULL, NULL, NULL, NULL, false,
1126 ll_intent_release(itp);
1129 ll_clear_inode_lock_owner(parent);
1134 #ifdef FMODE_CREATED /* added in Linux v4.18-rc1-20-g73a09dd */
1135 # define ll_is_opened(o, f) ((f)->f_mode & FMODE_OPENED)
1136 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL)
1137 # define ll_last_arg
1138 # define ll_set_created(o, f) \
1140 (f)->f_mode |= FMODE_CREATED; \
1144 # define ll_is_opened(o, f) (*(o))
1145 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL, (o))
1146 # define ll_last_arg , int *opened
1147 # define ll_set_created(o, f) \
1149 *(o) |= FILE_CREATED; \
1155 * For cached negative dentry and new dentry, handle lookup/create/open
1158 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
1159 struct file *file, unsigned open_flags,
1160 umode_t mode ll_last_arg)
1162 struct lookup_intent *it;
1164 long long lookup_flags = LOOKUP_OPEN;
1165 void *secctx = NULL;
1166 __u32 secctxlen = 0;
1168 void *encctx = NULL;
1169 __u32 encctxlen = 0;
1170 struct ll_sb_info *sbi = NULL;
1171 struct pcc_create_attach pca = { NULL, NULL };
1172 bool encrypt = false;
1177 /* VFS has locked the inode before calling this */
1178 ll_set_inode_lock_owner(dir);
1181 "VFS Op:name=%pd, dir="DFID"(%p), file %p, open_flags %x, mode %x opened %d\n",
1182 dentry, PFID(ll_inode2fid(dir)), dir, file, open_flags, mode,
1183 ll_is_opened(opened, file));
1185 /* Only negative dentries enter here */
1186 LASSERT(dentry->d_inode == NULL);
1188 #ifndef HAVE_D_IN_LOOKUP
1189 if (!d_unhashed(dentry)) {
1191 if (!d_in_lookup(dentry)) {
1193 /* A valid negative dentry that just passed revalidation,
1194 * there's little point to try and open it server-side,
1195 * even though there's a minuscule chance it might succeed.
1196 * Either way it's a valid race to just return -ENOENT here.
1198 if (!(open_flags & O_CREAT))
1199 GOTO(clear, rc = -ENOENT);
1201 /* Otherwise we just unhash it to be rehashed afresh via
1202 * lookup if necessary
1207 OBD_ALLOC(it, sizeof(*it));
1209 GOTO(clear, rc = -ENOMEM);
1211 it->it_op = IT_OPEN;
1212 if (open_flags & O_CREAT) {
1213 it->it_op |= IT_CREAT;
1214 lookup_flags |= LOOKUP_CREATE;
1215 sbi = ll_i2sbi(dir);
1216 /* Volatile file is used for HSM restore, so do not use PCC */
1217 if (!filename_is_volatile(dentry->d_name.name,
1218 dentry->d_name.len, NULL)) {
1219 struct pcc_matcher item;
1220 struct pcc_dataset *dataset;
1222 item.pm_uid = from_kuid(&init_user_ns, current_uid());
1223 item.pm_gid = from_kgid(&init_user_ns, current_gid());
1224 item.pm_projid = ll_i2info(dir)->lli_projid;
1225 item.pm_name = &dentry->d_name;
1226 dataset = pcc_dataset_match_get(&sbi->ll_pcc_super,
1228 pca.pca_dataset = dataset;
1231 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
1232 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
1233 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1235 if (ll_sbi_has_encrypt(ll_i2sbi(dir)) && IS_ENCRYPTED(dir)) {
1236 /* in case of create, this is going to be a regular file because
1237 * we set S_IFREG bit on it->it_create_mode above
1239 rc = llcrypt_prepare_readdir(dir);
1241 GOTO(out_release, rc);
1243 if (open_flags & O_CREAT) {
1244 /* For migration or mirroring without enc key, we still
1245 * need to be able to create a volatile file.
1247 if (!llcrypt_has_encryption_key(dir) &&
1248 (!filename_is_volatile(dentry->d_name.name,
1249 dentry->d_name.len, NULL) ||
1250 (open_flags & O_CIPHERTEXT) != O_CIPHERTEXT ||
1251 !(open_flags & O_DIRECT)))
1252 GOTO(out_release, rc = -ENOKEY);
1256 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE2, cfs_fail_val);
1258 /* We can only arrive at this path when we have no inode, so
1259 * we only need to request open lock if it was requested
1262 if (ll_i2info(dir)->lli_open_thrsh_count != UINT_MAX)
1263 open_threshold = ll_i2info(dir)->lli_open_thrsh_count;
1265 open_threshold = ll_i2sbi(dir)->ll_oc_thrsh_count;
1267 if (open_threshold == 1 &&
1268 exp_connect_flags2(ll_i2mdexp(dir)) &
1269 OBD_CONNECT2_ATOMIC_OPEN_LOCK)
1270 it->it_flags |= MDS_OPEN_LOCK;
1272 /* Dentry added to dcache tree in ll_lookup_it */
1273 de = ll_lookup_it(dir, dentry, it, &secctx, &secctxlen, &secctxslot,
1274 &pca, encrypt, &encctx, &encctxlen);
1277 else if (de != NULL)
1280 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1283 if (it_disposition(it, DISP_OPEN_CREATE)) {
1284 /* Dentry instantiated in ll_create_it. */
1285 rc = ll_create_it(dir, dentry, it, secctx, secctxlen,
1286 encrypt, encctx, encctxlen,
1288 ll_security_release_secctx(secctx, secctxlen,
1290 llcrypt_free_ctx(encctx, encctxlen);
1292 /* We dget in ll_splice_alias. */
1298 rc = pcc_inode_create_fini(dentry->d_inode, &pca);
1302 GOTO(out_release, rc);
1305 ll_set_created(opened, file);
1307 /* Open the file with O_CREAT, but the file already
1308 * existed on MDT. This may happend in the case that
1309 * the LOOKUP ibits lock is revoked and the
1310 * corresponding dentry cache is deleted.
1311 * i.e. In the current Lustre, the truncate operation
1312 * will revoke the LOOKUP ibits lock, and the file
1313 * dentry cache will be invalidated. The following open
1314 * with O_CREAT flag will call into ->atomic_open, the
1315 * file was wrongly though as newly created file and
1316 * try to auto cache the file. So after client knows it
1317 * is not a DISP_OPEN_CREATE, it should cleanup the
1318 * already created PCC copy.
1320 pcc_create_attach_cleanup(dir->i_sb, &pca);
1322 if (open_flags & O_CREAT && encrypt &&
1324 rc = ll_set_encflags(dentry->d_inode, encctx,
1326 llcrypt_free_ctx(encctx, encctxlen);
1328 GOTO(out_release, rc);
1332 /* check also if a foreign file is openable */
1333 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN) &&
1334 ll_foreign_is_openable(dentry, open_flags)) {
1336 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1337 /* We cannot call open here as it might
1338 * deadlock. This case is unreachable in
1339 * practice because of OBD_CONNECT_NODEVOH. */
1340 rc = finish_no_open(file, de);
1342 file->private_data = it;
1343 rc = ll_finish_open(file, dentry, opened);
1344 /* We dget in ll_splice_alias. finish_open takes
1345 * care of dget for fd open.
1351 rc = finish_no_open(file, de);
1354 pcc_create_attach_cleanup(dir->i_sb, &pca);
1358 ll_intent_release(it);
1359 OBD_FREE(it, sizeof(*it));
1361 ll_clear_inode_lock_owner(dir);
1366 /* We depend on "mode" being set with the proper file type/umask by now */
1367 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
1369 struct inode *inode = NULL;
1370 struct ptlrpc_request *request = NULL;
1371 struct ll_sb_info *sbi = ll_i2sbi(dir);
1375 LASSERT(it && it->it_disposition);
1377 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
1378 request = it->it_request;
1379 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
1380 rc = ll_prep_inode(&inode, &request->rq_pill, dir->i_sb, it);
1382 GOTO(out, inode = ERR_PTR(rc));
1384 /* Pause to allow for a race with concurrent access by fid */
1385 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_NODE_PAUSE, cfs_fail_val);
1387 /* We asked for a lock on the directory, but were granted a
1388 * lock on the inode. Since we finally have an inode pointer,
1389 * stuff it in the lock. */
1390 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
1391 PFID(ll_inode2fid(inode)), inode);
1392 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
1395 ptlrpc_req_finished(request);
1400 * By the time this is called, we already have created the directory cache
1401 * entry for the new file, but it is so far negative - it has no inode.
1403 * We defer creating the OBD object(s) until open, to keep the intent and
1404 * non-intent code paths similar, and also because we do not have the MDS
1405 * inode number before calling ll_create_node() (which is needed for LOV),
1406 * so we would need to do yet another RPC to the MDS to store the LOV EA
1407 * data on the MDS. If needed, we would pass the PACKED lmm as data and
1408 * lmm_size in datalen (the MDS still has code which will handle that).
1410 * If the create succeeds, we fill in the inode information
1411 * with d_instantiate().
1413 static int ll_create_it(struct inode *dir, struct dentry *dentry,
1414 struct lookup_intent *it,
1415 void *secctx, __u32 secctxlen, bool encrypt,
1416 void *encctx, __u32 encctxlen, unsigned int open_flags)
1418 struct inode *inode;
1423 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), intent=%s\n",
1424 dentry, PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
1426 rc = it_open_error(DISP_OPEN_CREATE, it);
1430 inode = ll_create_node(dir, it);
1432 RETURN(PTR_ERR(inode));
1434 /* must be done before d_instantiate, because it calls
1435 * security_d_instantiate, which means a getxattr if security
1436 * context is not set yet
1438 rc = ll_inode_notifysecctx(inode, secctx, secctxlen);
1442 d_instantiate(dentry, inode);
1445 bool preload = true;
1447 /* For migration or mirroring without enc key, we
1448 * create a volatile file without enc context.
1450 if (!llcrypt_has_encryption_key(dir) &&
1451 filename_is_volatile(dentry->d_name.name,
1452 dentry->d_name.len, NULL) &&
1453 (open_flags & O_CIPHERTEXT) == O_CIPHERTEXT &&
1454 open_flags & O_DIRECT)
1456 rc = ll_set_encflags(inode, encctx, encctxlen, preload);
1461 if (!test_bit(LL_SBI_FILE_SECCTX, ll_i2sbi(inode)->ll_flags)) {
1462 rc = ll_inode_init_security(dentry, inode, dir);
1467 ll_set_lock_data(ll_i2sbi(dir)->ll_md_exp, inode, it, &bits);
1468 if (bits & MDS_INODELOCK_LOOKUP) {
1469 d_lustre_revalidate(dentry);
1470 if (S_ISDIR(inode->i_mode))
1471 ll_update_dir_depth_dmv(dir, dentry);
1477 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
1479 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
1483 if (body->mbo_valid & OBD_MD_FLMTIME &&
1484 body->mbo_mtime > inode_get_mtime_sec(inode)) {
1486 "setting fid " DFID " mtime from %lld to %llu\n",
1487 PFID(ll_inode2fid(inode)),
1488 (s64)inode_get_mtime_sec(inode), body->mbo_mtime);
1489 inode_set_mtime(inode, body->mbo_mtime, 0);
1492 if (body->mbo_valid & OBD_MD_FLCTIME &&
1493 body->mbo_ctime > inode_get_ctime_sec(inode))
1494 inode_set_ctime(inode, body->mbo_ctime, 0);
1497 /* once default LMV (space balanced) is set on ROOT, it should take effect if
1498 * default LMV is not set on parent directory.
1500 static void ll_qos_mkdir_prep(struct md_op_data *op_data, struct inode *dir)
1502 struct inode *root = dir->i_sb->s_root->d_inode;
1503 struct ll_inode_info *rlli = ll_i2info(root);
1504 struct ll_inode_info *lli = ll_i2info(dir);
1505 struct lmv_stripe_md *lsm;
1506 unsigned short depth;
1508 op_data->op_dir_depth = lli->lli_inherit_depth ?: lli->lli_dir_depth;
1509 depth = lli->lli_dir_depth;
1511 /* parent directory is striped */
1512 if (unlikely(ll_dir_striped(dir)))
1515 /* default LMV set on parent directory */
1516 if (unlikely(lli->lli_def_lsm_obj))
1519 /* parent is ROOT */
1520 if (unlikely(dir == root))
1523 /* default LMV not set on ROOT */
1524 if (!rlli->lli_def_lsm_obj)
1527 down_read(&rlli->lli_lsm_sem);
1528 if (!rlli->lli_def_lsm_obj)
1530 lsm = &rlli->lli_def_lsm_obj->lso_lsm;
1532 /* not space balanced */
1533 if (lsm->lsm_md_master_mdt_index != LMV_OFFSET_DEFAULT)
1537 * Check if the fs default is to be applied.
1538 * depth == 0 means 'not inited' for not root dir.
1540 if (lsm->lsm_md_max_inherit != LMV_INHERIT_NONE &&
1541 (lsm->lsm_md_max_inherit == LMV_INHERIT_UNLIMITED ||
1542 (depth && lsm->lsm_md_max_inherit > depth))) {
1543 op_data->op_flags |= MF_QOS_MKDIR;
1544 if (lsm->lsm_md_max_inherit_rr != LMV_INHERIT_RR_NONE &&
1545 (lsm->lsm_md_max_inherit_rr == LMV_INHERIT_RR_UNLIMITED ||
1546 (depth && lsm->lsm_md_max_inherit_rr > depth)))
1547 op_data->op_flags |= MF_RR_MKDIR;
1548 CDEBUG(D_INODE, DFID" requests qos mkdir %#x\n",
1549 PFID(&lli->lli_fid), op_data->op_flags);
1552 up_read(&rlli->lli_lsm_sem);
1555 static int ll_new_node_prepare(struct inode *dir, struct dentry *dchild,
1556 umode_t mode, __u32 opc, bool *encrypt,
1557 const char *tgt, struct md_op_data **op_datap,
1558 struct lmv_user_md **lump, void **datap,
1559 size_t *datalen, struct llcrypt_str *disk_link)
1561 struct ll_sb_info *sbi = ll_i2sbi(dir);
1562 struct lmv_user_md *lum = *lump;
1563 struct md_op_data *op_data = NULL;
1568 op_data = ll_prep_md_op_data(NULL, dir, NULL, dchild->d_name.name,
1569 dchild->d_name.len, mode, opc, NULL);
1570 if (IS_ERR(op_data))
1571 RETURN(PTR_ERR(op_data));
1573 *op_datap = op_data;
1574 if (S_ISDIR(mode)) {
1575 ll_qos_mkdir_prep(op_data, dir);
1576 if ((exp_connect_flags2(ll_i2mdexp(dir)) &
1577 OBD_CONNECT2_DMV_IMP_INHERIT) &&
1578 op_data->op_default_lso1 && !lum) {
1579 const struct lmv_stripe_md *lsm;
1581 /* once DMV_IMP_INHERIT is set, pack default LMV in
1586 GOTO(err_exit, err = -ENOMEM);
1588 lsm = &op_data->op_default_lso1->lso_lsm;
1589 lum->lum_magic = cpu_to_le32(lsm->lsm_md_magic);
1590 lum->lum_stripe_count =
1591 cpu_to_le32(lsm->lsm_md_stripe_count);
1592 lum->lum_stripe_offset =
1593 cpu_to_le32(lsm->lsm_md_master_mdt_index);
1594 lum->lum_hash_type =
1595 cpu_to_le32(lsm->lsm_md_hash_type);
1596 lum->lum_max_inherit = lsm->lsm_md_max_inherit;
1597 lum->lum_max_inherit_rr = lsm->lsm_md_max_inherit_rr;
1598 lum->lum_pool_name[0] = 0;
1599 op_data->op_bias |= MDS_CREATE_DEFAULT_LMV;
1602 *datalen = sizeof(*lum);
1606 if (test_bit(LL_SBI_FILE_SECCTX, sbi->ll_flags)) {
1607 err = ll_dentry_init_security(dchild, mode, &dchild->d_name,
1608 &op_data->op_file_secctx_name,
1609 &op_data->op_file_secctx_name_size,
1610 &op_data->op_file_secctx,
1611 &op_data->op_file_secctx_size,
1612 &op_data->op_file_secctx_slot);
1614 GOTO(err_exit, err);
1617 if (ll_sbi_has_encrypt(sbi) &&
1618 ((IS_ENCRYPTED(dir) &&
1619 (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) ||
1620 (unlikely(ll_sb_has_test_dummy_encryption(dir->i_sb)) &&
1622 err = llcrypt_prepare_readdir(dir);
1624 GOTO(err_exit, err);
1625 if (!llcrypt_has_encryption_key(dir))
1626 GOTO(err_exit, err = -ENOKEY);
1631 err = llcrypt_inherit_context(dir, NULL, op_data, false);
1633 GOTO(err_exit, err);
1635 if (S_ISLNK(mode)) {
1636 /* llcrypt needs inode to encrypt target name, so create
1637 * a fake inode and associate encryption context got
1638 * from llcrypt_inherit_context.
1640 struct inode *fakeinode =
1641 dchild->d_sb->s_op->alloc_inode(dchild->d_sb);
1644 GOTO(err_exit, err = -ENOMEM);
1645 fakeinode->i_sb = dchild->d_sb;
1646 fakeinode->i_mode |= S_IFLNK;
1648 fakeinode->i_opflags |= IOP_XATTR;
1650 ll_lli_init(ll_i2info(fakeinode));
1651 err = ll_set_encflags(fakeinode,
1652 op_data->op_file_encctx,
1653 op_data->op_file_encctx_size,
1656 err = __llcrypt_encrypt_symlink(fakeinode, tgt,
1660 ll_xattr_cache_destroy(fakeinode);
1661 llcrypt_put_encryption_info(fakeinode);
1662 dchild->d_sb->s_op->destroy_inode(fakeinode);
1664 GOTO(err_exit, err);
1666 *datap = disk_link->name;
1667 *datalen = disk_link->len;
1673 if (!IS_ERR_OR_NULL(op_data)) {
1674 ll_finish_md_op_data(op_data);
1684 static int ll_new_node_finish(struct inode *dir, struct dentry *dchild,
1685 bool encrypt, umode_t mode, const char *tgt,
1686 struct inode **inode, struct md_op_data *op_data,
1687 struct ptlrpc_request *request)
1693 ll_update_times(request, dir);
1695 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_NEWNODE_PAUSE, cfs_fail_val);
1697 err = ll_prep_inode(inode, &request->rq_pill, dchild->d_sb, NULL);
1701 /* must be done before d_instantiate, because it calls
1702 * security_d_instantiate, which means a getxattr if security
1703 * context is not set yet
1705 err = ll_inode_notifysecctx(*inode,
1706 op_data->op_file_secctx,
1707 op_data->op_file_secctx_size);
1711 d_instantiate(dchild, *inode);
1714 err = ll_set_encflags(*inode, op_data->op_file_encctx,
1715 op_data->op_file_encctx_size, true);
1719 if (S_ISLNK(mode)) {
1720 struct ll_inode_info *lli = ll_i2info(*inode);
1722 /* Cache the plaintext symlink target
1723 * for later use by get_link()
1725 OBD_ALLOC(lli->lli_symlink_name, strlen(tgt) + 1);
1726 /* do not return an error if we cannot
1727 * cache the symlink locally
1729 if (lli->lli_symlink_name)
1730 memcpy(lli->lli_symlink_name,
1731 tgt, strlen(tgt) + 1);
1735 if (!test_bit(LL_SBI_FILE_SECCTX, ll_i2sbi(dir)->ll_flags))
1736 err = ll_inode_init_security(dchild, *inode, dir);
1741 static int ll_new_node(struct inode *dir, struct dentry *dchild,
1742 const char *tgt, umode_t mode, __u64 rdev, __u32 opc)
1744 struct ptlrpc_request *request = NULL;
1745 struct md_op_data *op_data = NULL;
1746 struct inode *inode = NULL;
1747 struct ll_sb_info *sbi = ll_i2sbi(dir);
1748 struct llcrypt_str *disk_link = NULL;
1749 bool encrypt = false;
1750 struct lmv_user_md *lum = NULL;
1756 if (unlikely(tgt != NULL)) {
1757 disk_link = (struct llcrypt_str *)rdev;
1761 data = disk_link->name;
1762 datalen = disk_link->len;
1766 err = ll_new_node_prepare(dir, dchild, mode, opc, &encrypt, tgt,
1767 &op_data, &lum, &data, &datalen, disk_link);
1769 GOTO(err_exit, err);
1771 err = md_create(sbi->ll_md_exp, op_data, data, datalen, mode,
1772 from_kuid(&init_user_ns, current_fsuid()),
1773 from_kgid(&init_user_ns, current_fsgid()),
1774 current_cap(), rdev, &request);
1775 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 17, 58, 0)
1777 * server < 2.12.58 doesn't pack default LMV in intent_getattr reply,
1778 * fetch default LMV here.
1780 if (unlikely(err == -EREMOTE)) {
1781 struct ll_inode_info *lli = ll_i2info(dir);
1782 struct lmv_user_md *lum;
1786 ptlrpc_req_finished(request);
1788 ll_finish_md_op_data(op_data);
1791 err2 = ll_dir_getstripe(dir, (void **)&lum, &lumsize, &request,
1792 OBD_MD_DEFAULT_MEA);
1794 struct lustre_md md = { NULL };
1797 md.body = req_capsule_server_get(&request->rq_pill,
1800 GOTO(err_exit, err = -EPROTO);
1802 OBD_ALLOC_PTR(md.def_lsm_obj);
1803 if (!md.def_lsm_obj)
1804 GOTO(err_exit, err = -ENOMEM);
1806 md.def_lsm_obj->lso_lsm.lsm_md_magic = lum->lum_magic;
1807 md.def_lsm_obj->lso_lsm.lsm_md_stripe_count =
1808 lum->lum_stripe_count;
1809 md.def_lsm_obj->lso_lsm.lsm_md_master_mdt_index =
1810 lum->lum_stripe_offset;
1811 md.def_lsm_obj->lso_lsm.lsm_md_hash_type =
1813 md.def_lsm_obj->lso_lsm.lsm_md_max_inherit =
1814 lum->lum_max_inherit;
1815 md.def_lsm_obj->lso_lsm.lsm_md_max_inherit_rr =
1816 lum->lum_max_inherit_rr;
1817 atomic_set(&md.def_lsm_obj->lso_refs, 1);
1819 err = ll_update_inode(dir, &md);
1820 md_put_lustre_md(sbi->ll_md_exp, &md);
1822 GOTO(err_exit, err);
1823 } else if (err2 == -ENODATA && lli->lli_def_lsm_obj) {
1825 * If there are no default stripe EA on the MDT, but the
1826 * client has default stripe, then it probably means
1827 * default stripe EA has just been deleted.
1829 down_write(&lli->lli_lsm_sem);
1830 lmv_stripe_object_put(&lli->lli_def_lsm_obj);
1831 up_write(&lli->lli_lsm_sem);
1833 GOTO(err_exit, err);
1836 ptlrpc_req_finished(request);
1843 GOTO(err_exit, err);
1845 err = ll_new_node_finish(dir, dchild, encrypt, mode, tgt,
1846 &inode, op_data, request);
1848 GOTO(err_exit, err);
1852 if (request != NULL)
1853 ptlrpc_req_finished(request);
1854 if (!IS_ERR_OR_NULL(op_data))
1855 ll_finish_md_op_data(op_data);
1862 static int ll_mknod(struct mnt_idmap *map, struct inode *dir,
1863 struct dentry *dchild, umode_t mode, dev_t rdev)
1865 ktime_t kstart = ktime_get();
1869 /* VFS has locked the inode before calling this */
1870 ll_set_inode_lock_owner(dir);
1872 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p) mode %o dev %x\n",
1873 dchild, PFID(ll_inode2fid(dir)), dir, mode, rdev);
1875 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1876 mode &= ~current_umask();
1878 switch (mode & S_IFMT) {
1887 err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
1898 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD,
1899 ktime_us_delta(ktime_get(), kstart));
1900 ll_clear_inode_lock_owner(dir);
1906 * Plain create. Intent create is handled in atomic_open.
1908 static int ll_create_nd(struct mnt_idmap *map, struct inode *dir,
1909 struct dentry *dentry, umode_t mode, bool want_excl)
1911 ktime_t kstart = ktime_get();
1914 /* VFS has locked the inode before calling this */
1915 ll_set_inode_lock_owner(dir);
1917 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1920 "VFS Op:name=%pd, dir="DFID"(%p), flags=%u, excl=%d\n",
1921 dentry, PFID(ll_inode2fid(dir)), dir, mode, want_excl);
1923 /* Using mknod(2) to create a regular file is designed to not recognize
1924 * volatile file name, so we use ll_mknod() here. */
1925 rc = ll_mknod(map, dir, dentry, mode, 0);
1927 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, unhashed %d\n",
1928 dentry, d_unhashed(dentry));
1931 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE,
1932 ktime_us_delta(ktime_get(), kstart));
1934 ll_clear_inode_lock_owner(dir);
1939 static int ll_symlink(struct mnt_idmap *map, struct inode *dir,
1940 struct dentry *dchild, const char *oldpath)
1942 ktime_t kstart = ktime_get();
1943 int len = strlen(oldpath);
1944 struct llcrypt_str disk_link;
1948 /* VFS has locked the inode before calling this */
1949 ll_set_inode_lock_owner(dir);
1951 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), target=%.*s\n",
1952 dchild, PFID(ll_inode2fid(dir)), dir, 3000, oldpath);
1954 err = llcrypt_prepare_symlink(dir, oldpath, len, dir->i_sb->s_blocksize,
1959 err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO,
1960 (__u64)&disk_link, LUSTRE_OPC_SYMLINK);
1962 if (disk_link.name != (unsigned char *)oldpath)
1963 kfree(disk_link.name);
1966 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK,
1967 ktime_us_delta(ktime_get(), kstart));
1970 ll_clear_inode_lock_owner(dir);
1975 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1976 struct dentry *new_dentry)
1978 struct inode *src = old_dentry->d_inode;
1979 struct qstr *name = &new_dentry->d_name;
1980 struct ll_sb_info *sbi = ll_i2sbi(dir);
1981 struct ptlrpc_request *request = NULL;
1982 struct md_op_data *op_data;
1983 ktime_t kstart = ktime_get();
1987 /* VFS has locked the inodes before calling this */
1988 ll_set_inode_lock_owner(src);
1989 ll_set_inode_lock_owner(dir);
1992 "VFS Op: inode="DFID"(%p), dir="DFID"(%p), target=%pd\n",
1993 PFID(ll_inode2fid(src)), src,
1994 PFID(ll_inode2fid(dir)), dir, new_dentry);
1996 err = llcrypt_prepare_link(old_dentry, dir, new_dentry);
2000 op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
2001 0, LUSTRE_OPC_ANY, NULL);
2002 if (IS_ERR(op_data))
2003 GOTO(clear, err = PTR_ERR(op_data));
2005 err = md_link(sbi->ll_md_exp, op_data, &request);
2006 ll_finish_md_op_data(op_data);
2010 ll_update_times(request, dir);
2011 ll_stats_ops_tally(sbi, LPROC_LL_LINK,
2012 ktime_us_delta(ktime_get(), kstart));
2015 ptlrpc_req_finished(request);
2017 ll_clear_inode_lock_owner(src);
2018 ll_clear_inode_lock_owner(dir);
2023 static int ll_mkdir(struct mnt_idmap *map, struct inode *dir,
2024 struct dentry *dchild, umode_t mode)
2026 struct lookup_intent mkdir_it = { .it_op = IT_CREAT };
2027 struct ll_sb_info *sbi = ll_i2sbi(dir);
2028 struct ptlrpc_request *request = NULL;
2029 struct md_op_data *op_data;
2030 struct inode *inode = NULL;
2031 struct lmv_user_md *lum = NULL;
2032 bool encrypt = false;
2035 ktime_t kstart = ktime_get();
2040 /* VFS has locked the inode before calling this */
2041 ll_set_inode_lock_owner(dir);
2043 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p)\n",
2044 dchild, PFID(ll_inode2fid(dir)), dir);
2046 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
2047 mode &= ~current_umask();
2049 mode = (mode & (S_IRWXUGO | S_ISVTX)) | S_IFDIR;
2050 if (!sbi->ll_intent_mkdir_enabled) {
2051 rc = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
2052 GOTO(out_tally, rc);
2055 mkdir_it.it_create_mode = mode;
2056 rc = ll_new_node_prepare(dir, dchild, mode, LUSTRE_OPC_MKDIR, &encrypt,
2057 NULL, &op_data, &lum, &data, &datalen, NULL);
2059 GOTO(out_tally, rc);
2061 op_data->op_data = data;
2062 op_data->op_data_size = datalen;
2063 rc = md_intent_lock(sbi->ll_md_exp, op_data, &mkdir_it,
2064 &request, &ll_md_blocking_ast, 0);
2068 /* dir layout may change */
2069 ll_unlock_md_op_lsm(op_data);
2071 rc = ll_new_node_finish(dir, dchild, encrypt, mode, NULL,
2072 &inode, op_data, request);
2076 if (mkdir_it.it_lock_mode) {
2079 LASSERT(it_disposition(&mkdir_it, DISP_LOOKUP_NEG));
2080 ll_set_lock_data(sbi->ll_md_exp, inode, &mkdir_it, &bits);
2081 if (bits & MDS_INODELOCK_LOOKUP) {
2082 if (!ll_d_setup(dchild, false))
2083 GOTO(out_fini, rc = -ENOMEM);
2084 d_lustre_revalidate(dchild);
2089 ll_finish_md_op_data(op_data);
2090 ll_intent_release(&mkdir_it);
2091 ptlrpc_req_finished(request);
2097 ll_stats_ops_tally(sbi, LPROC_LL_MKDIR,
2098 ktime_us_delta(ktime_get(), kstart));
2100 ll_clear_inode_lock_owner(dir);
2105 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
2107 struct qstr *name = &dchild->d_name;
2108 struct ptlrpc_request *request = NULL;
2109 struct md_op_data *op_data;
2110 ktime_t kstart = ktime_get();
2115 /* VFS has locked the inodes before calling this */
2116 ll_set_inode_lock_owner(dir);
2117 ll_set_inode_lock_owner(dchild->d_inode);
2119 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p)\n",
2120 dchild, PFID(ll_inode2fid(dir)), dir);
2122 if (unlikely(d_mountpoint(dchild)))
2123 GOTO(out, rc = -EBUSY);
2125 /* some foreign dir may not be allowed to be removed */
2126 if (!ll_foreign_is_removable(dchild, false))
2127 GOTO(out, rc = -EPERM);
2129 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
2130 S_IFDIR, LUSTRE_OPC_ANY, NULL);
2131 if (IS_ERR(op_data))
2132 GOTO(out, rc = PTR_ERR(op_data));
2134 if (dchild->d_inode != NULL)
2135 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
2137 if (fid_is_zero(&op_data->op_fid2))
2138 op_data->op_fid2 = op_data->op_fid3;
2139 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
2140 ll_finish_md_op_data(op_data);
2142 struct mdt_body *body;
2144 ll_update_times(request, dir);
2145 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
2146 ktime_us_delta(ktime_get(), kstart));
2149 * The server puts attributes in on the last unlink, use them
2150 * to update the link count so the inode can be freed
2153 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
2154 if (body->mbo_valid & OBD_MD_FLNLINK) {
2155 spin_lock(&dchild->d_inode->i_lock);
2156 set_nlink(dchild->d_inode, body->mbo_nlink);
2157 spin_unlock(&dchild->d_inode->i_lock);
2161 ptlrpc_req_finished(request);
2163 ll_clear_inode_lock_owner(dir);
2164 ll_clear_inode_lock_owner(dchild->d_inode);
2172 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
2174 struct ptlrpc_request *request = NULL;
2175 struct md_op_data *op_data;
2176 ktime_t kstart = ktime_get();
2180 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
2181 namelen, name, PFID(ll_inode2fid(dir)), dir);
2183 op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
2184 S_IFDIR, LUSTRE_OPC_ANY, NULL);
2185 if (IS_ERR(op_data))
2186 RETURN(PTR_ERR(op_data));
2187 op_data->op_cli_flags |= CLI_RM_ENTRY;
2188 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
2189 ll_finish_md_op_data(op_data);
2191 ll_update_times(request, dir);
2193 ptlrpc_req_finished(request);
2195 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
2196 ktime_us_delta(ktime_get(), kstart));
2200 static int ll_unlink(struct inode *dir, struct dentry *dchild)
2202 struct qstr *name = &dchild->d_name;
2203 struct ptlrpc_request *request = NULL;
2204 struct md_op_data *op_data;
2205 struct mdt_body *body;
2206 ktime_t kstart = ktime_get();
2211 /* VFS has locked the inodes before calling this */
2212 ll_set_inode_lock_owner(dir);
2213 ll_set_inode_lock_owner(dchild->d_inode);
2215 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p)\n",
2216 dchild, PFID(ll_inode2fid(dir)), dir);
2219 * XXX: unlink bind mountpoint maybe call to here,
2220 * just check it as vfs_unlink does.
2222 if (unlikely(d_mountpoint(dchild)))
2223 GOTO(clear, rc = -EBUSY);
2225 /* some foreign file/dir may not be allowed to be unlinked */
2226 if (!ll_foreign_is_removable(dchild, false))
2227 GOTO(clear, rc = -EPERM);
2229 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
2230 LUSTRE_OPC_ANY, NULL);
2231 if (IS_ERR(op_data))
2232 GOTO(clear, rc = PTR_ERR(op_data));
2234 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
2235 /* notify lower layer if inode has dirty pages */
2236 if (S_ISREG(dchild->d_inode->i_mode) &&
2237 ll_i2info(dchild->d_inode)->lli_clob &&
2238 dirty_cnt(dchild->d_inode))
2239 op_data->op_cli_flags |= CLI_DIRTY_DATA;
2240 if (fid_is_zero(&op_data->op_fid2))
2241 op_data->op_fid2 = op_data->op_fid3;
2242 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
2243 ll_finish_md_op_data(op_data);
2248 * The server puts attributes in on the last unlink, use them to update
2249 * the link count so the inode can be freed immediately.
2251 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
2252 if (body->mbo_valid & OBD_MD_FLNLINK) {
2253 spin_lock(&dchild->d_inode->i_lock);
2254 set_nlink(dchild->d_inode, body->mbo_nlink);
2255 spin_unlock(&dchild->d_inode->i_lock);
2258 ll_update_times(request, dir);
2261 ptlrpc_req_finished(request);
2263 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK,
2264 ktime_us_delta(ktime_get(), kstart));
2266 ll_clear_inode_lock_owner(dir);
2267 ll_clear_inode_lock_owner(dchild->d_inode);
2271 static int ll_rename(struct mnt_idmap *map,
2272 struct inode *src, struct dentry *src_dchild,
2273 struct inode *tgt, struct dentry *tgt_dchild
2274 #if defined(HAVE_USER_NAMESPACE_ARG) || defined(HAVE_IOPS_RENAME_WITH_FLAGS)
2275 , unsigned int flags
2279 struct ptlrpc_request *request = NULL;
2280 struct ll_sb_info *sbi = ll_i2sbi(src);
2281 struct md_op_data *op_data;
2282 ktime_t kstart = ktime_get();
2284 struct llcrypt_name foldname, fnewname;
2288 /* VFS has locked the inodes before calling this */
2289 ll_set_inode_lock_owner(src);
2290 ll_set_inode_lock_owner(tgt);
2291 if (tgt_dchild->d_inode)
2292 ll_set_inode_lock_owner(tgt_dchild->d_inode);
2294 #if defined(HAVE_USER_NAMESPACE_ARG) || defined(HAVE_IOPS_RENAME_WITH_FLAGS)
2296 GOTO(out, err = -EINVAL);
2300 "VFS Op:oldname=%pd, src_dir="DFID"(%p), newname=%pd, tgt_dir="DFID"(%p)\n",
2301 src_dchild, PFID(ll_inode2fid(src)), src,
2302 tgt_dchild, PFID(ll_inode2fid(tgt)), tgt);
2304 if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
2305 GOTO(out, err = -EBUSY);
2307 #if defined(HAVE_USER_NAMESPACE_ARG) || defined(HAVE_IOPS_RENAME_WITH_FLAGS)
2308 err = llcrypt_prepare_rename(src, src_dchild, tgt, tgt_dchild, flags);
2310 err = llcrypt_prepare_rename(src, src_dchild, tgt, tgt_dchild, 0);
2314 /* we prevent an encrypted file from being renamed
2315 * into an unencrypted dir
2317 if (IS_ENCRYPTED(src) && !IS_ENCRYPTED(tgt))
2318 GOTO(out, err = -EXDEV);
2320 if (src_dchild->d_inode)
2321 mode = src_dchild->d_inode->i_mode;
2323 if (tgt_dchild->d_inode)
2324 mode = tgt_dchild->d_inode->i_mode;
2326 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, mode,
2327 LUSTRE_OPC_ANY, NULL);
2328 if (IS_ERR(op_data))
2329 GOTO(out, err = PTR_ERR(op_data));
2331 /* If the client is using a subdir mount and does a rename to what it
2332 * sees as /.fscrypt, interpret it as the .fscrypt dir at fs root.
2334 if (unlikely(is_root_inode(tgt) && !fid_is_root(ll_inode2fid(tgt)) &&
2335 tgt_dchild->d_name.len == strlen(dot_fscrypt_name) &&
2336 strncmp(tgt_dchild->d_name.name, dot_fscrypt_name,
2337 tgt_dchild->d_name.len) == 0))
2338 lu_root_fid(&op_data->op_fid2);
2340 if (src_dchild->d_inode)
2341 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
2343 if (tgt_dchild->d_inode)
2344 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
2346 err = ll_setup_filename(src, &src_dchild->d_name, 1, &foldname, NULL);
2349 err = ll_setup_filename(tgt, &tgt_dchild->d_name, 1, &fnewname, NULL);
2351 llcrypt_free_filename(&foldname);
2354 err = md_rename(sbi->ll_md_exp, op_data,
2355 foldname.disk_name.name, foldname.disk_name.len,
2356 fnewname.disk_name.name, fnewname.disk_name.len,
2358 llcrypt_free_filename(&foldname);
2359 llcrypt_free_filename(&fnewname);
2360 ll_finish_md_op_data(op_data);
2362 ll_update_times(request, src);
2363 ll_update_times(request, tgt);
2366 ptlrpc_req_finished(request);
2369 d_move(src_dchild, tgt_dchild);
2370 ll_stats_ops_tally(sbi, LPROC_LL_RENAME,
2371 ktime_us_delta(ktime_get(), kstart));
2374 ll_clear_inode_lock_owner(src);
2375 ll_clear_inode_lock_owner(tgt);
2376 if (tgt_dchild->d_inode)
2377 ll_clear_inode_lock_owner(tgt_dchild->d_inode);
2381 const struct inode_operations ll_dir_inode_operations = {
2383 .atomic_open = ll_atomic_open,
2384 .lookup = ll_lookup_nd,
2385 .create = ll_create_nd,
2386 /* We need all these non-raw things for NFSD, to not patch it. */
2387 .unlink = ll_unlink,
2390 .symlink = ll_symlink,
2392 .rename = ll_rename,
2393 .setattr = ll_setattr,
2394 .getattr = ll_getattr,
2395 .permission = ll_inode_permission,
2396 #ifdef HAVE_IOP_XATTR
2397 .setxattr = ll_setxattr,
2398 .getxattr = ll_getxattr,
2399 .removexattr = ll_removexattr,
2401 .listxattr = ll_listxattr,
2402 .get_acl = ll_get_acl,
2403 #ifdef HAVE_IOP_SET_ACL
2404 .set_acl = ll_set_acl,
2406 #ifdef HAVE_FILEATTR_GET
2407 .fileattr_get = ll_fileattr_get,
2408 .fileattr_set = ll_fileattr_set,
2412 const struct inode_operations ll_special_inode_operations = {
2413 .setattr = ll_setattr,
2414 .getattr = ll_getattr,
2415 .permission = ll_inode_permission,
2416 #ifdef HAVE_IOP_XATTR
2417 .setxattr = ll_setxattr,
2418 .getxattr = ll_getxattr,
2419 .removexattr = ll_removexattr,
2421 .listxattr = ll_listxattr,
2422 .get_acl = ll_get_acl,
2423 #ifdef HAVE_IOP_SET_ACL
2424 .set_acl = ll_set_acl,