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 static int ll_create_it(struct inode *dir, struct dentry *dentry,
50 struct lookup_intent *it,
51 void *secctx, __u32 secctxlen, bool encrypt,
52 void *encctx, __u32 encctxlen);
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 /* mark negative sub file dentries invalid and prune unused dentries */
158 static void ll_prune_negative_children(struct inode *dir)
160 struct dentry *dentry;
161 struct dentry *child;
166 spin_lock(&dir->i_lock);
167 hlist_for_each_entry(dentry, &dir->i_dentry, d_alias) {
168 spin_lock(&dentry->d_lock);
169 list_for_each_entry(child, &dentry->d_subdirs, d_child) {
173 spin_lock_nested(&child->d_lock, DENTRY_D_LOCK_NESTED);
174 __d_lustre_invalidate(child);
175 if (!ll_d_count(child)) {
178 spin_unlock(&child->d_lock);
179 spin_unlock(&dentry->d_lock);
180 spin_unlock(&dir->i_lock);
182 CDEBUG(D_DENTRY, "prune negative dentry %pd\n",
188 spin_unlock(&child->d_lock);
190 spin_unlock(&dentry->d_lock);
192 spin_unlock(&dir->i_lock);
197 int ll_test_inode_by_fid(struct inode *inode, void *opaque)
199 return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
202 static int ll_dom_lock_cancel(struct inode *inode, struct ldlm_lock *lock)
205 struct ll_inode_info *lli = ll_i2info(inode);
210 env = cl_env_get(&refcheck);
212 RETURN(PTR_ERR(env));
214 OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_REPLAY_PAUSE, cfs_fail_val);
216 /* reach MDC layer to flush data under the DoM ldlm lock */
217 rc = cl_object_flush(env, lli->lli_clob, lock);
218 if (rc == -ENODATA) {
219 CDEBUG(D_INODE, "inode "DFID" layout has no DoM stripe\n",
220 PFID(ll_inode2fid(inode)));
221 /* most likely result of layout change, do nothing */
225 cl_env_put(env, &refcheck);
229 static void ll_lock_cancel_bits(struct ldlm_lock *lock, __u64 to_cancel)
231 struct inode *inode = ll_inode_from_resource_lock(lock);
232 struct ll_inode_info *lli;
233 __u64 bits = to_cancel;
239 /* That means the inode is evicted most likely and may cause
240 * the skipping of lock cleanups below, so print the message
243 if (lock->l_resource->lr_lvb_inode)
245 "can't take inode for the lock (%sevicted)\n",
246 lock->l_resource->lr_lvb_inode->i_state &
247 I_FREEING ? "" : "not ");
251 if (!fid_res_name_eq(ll_inode2fid(inode),
252 &lock->l_resource->lr_name)) {
253 LDLM_ERROR(lock, "data mismatch with object "DFID"(%p)",
254 PFID(ll_inode2fid(inode)), inode);
258 if (bits & MDS_INODELOCK_XATTR) {
259 ll_xattr_cache_destroy(inode);
260 bits &= ~MDS_INODELOCK_XATTR;
263 /* For OPEN locks we differentiate between lock modes
264 * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
265 if (bits & MDS_INODELOCK_OPEN)
266 ll_have_md_lock(inode, &bits, lock->l_req_mode);
268 if (bits & MDS_INODELOCK_OPEN) {
271 switch (lock->l_req_mode) {
282 LDLM_ERROR(lock, "bad lock mode for OPEN lock");
286 ll_md_real_close(inode, fmode);
288 bits &= ~MDS_INODELOCK_OPEN;
291 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
292 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM |
294 ll_have_md_lock(inode, &bits, LCK_MINMODE);
296 if (bits & MDS_INODELOCK_DOM) {
297 rc = ll_dom_lock_cancel(inode, lock);
299 CDEBUG(D_INODE, "cannot flush DoM data "
301 PFID(ll_inode2fid(inode)), rc);
304 if (bits & MDS_INODELOCK_LAYOUT) {
305 struct cl_object_conf conf = {
306 .coc_opc = OBJECT_CONF_INVALIDATE,
310 rc = ll_layout_conf(inode, &conf);
312 CDEBUG(D_INODE, "cannot invalidate layout of "
314 PFID(ll_inode2fid(inode)), rc);
317 lli = ll_i2info(inode);
319 if (bits & MDS_INODELOCK_UPDATE)
320 set_bit(LLIF_UPDATE_ATIME, &lli->lli_flags);
322 if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
323 CDEBUG(D_INODE, "invalidating inode "DFID" lli = %p, "
324 "pfid = "DFID"\n", PFID(ll_inode2fid(inode)),
325 lli, PFID(&lli->lli_pfid));
326 truncate_inode_pages(inode->i_mapping, 0);
328 if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
329 struct inode *master_inode = NULL;
332 /* This is slave inode, since all of the child dentry
333 * is connected on the master inode, so we have to
334 * invalidate the negative children on master inode */
335 CDEBUG(D_INODE, "Invalidate s"DFID" m"DFID"\n",
336 PFID(ll_inode2fid(inode)), PFID(&lli->lli_pfid));
338 hash = cl_fid_build_ino(&lli->lli_pfid,
339 ll_need_32bit_api(ll_i2sbi(inode)));
341 /* Do not lookup the inode with ilookup5, otherwise
342 * it will cause dead lock,
343 * 1. Client1 send chmod req to the MDT0, then on MDT0,
344 * it enqueues master and all of its slaves lock,
345 * (mdt_attr_set() -> mdt_lock_slaves()), after gets
346 * master and stripe0 lock, it will send the enqueue
347 * req (for stripe1) to MDT1, then MDT1 finds the lock
348 * has been granted to client2. Then MDT1 sends blocking
350 * 2. At the same time, client2 tries to unlink
351 * the striped dir (rm -rf striped_dir), and during
352 * lookup, it will hold the master inode of the striped
353 * directory, whose inode state is NEW, then tries to
354 * revalidate all of its slaves, (ll_prep_inode()->
355 * ll_iget()->ll_read_inode2()-> ll_update_inode().).
356 * And it will be blocked on the server side because
358 * 3. Then the client get the blocking_ast req, cancel
359 * the lock, but being blocked if using ->ilookup5()),
360 * because master inode state is NEW. */
361 master_inode = ilookup5_nowait(inode->i_sb, hash,
362 ll_test_inode_by_fid,
363 (void *)&lli->lli_pfid);
365 ll_prune_negative_children(master_inode);
369 ll_prune_negative_children(inode);
373 if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
374 !is_root_inode(inode))
375 ll_prune_aliases(inode);
377 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM))
378 forget_all_cached_acls(inode);
384 /* Check if the given lock may be downgraded instead of canceling and
385 * that convert is really needed. */
386 int ll_md_need_convert(struct ldlm_lock *lock)
388 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
390 __u64 wanted = lock->l_policy_data.l_inodebits.cancel_bits;
391 __u64 bits = lock->l_policy_data.l_inodebits.bits & ~wanted;
392 enum ldlm_mode mode = LCK_MINMODE;
394 if (!lock->l_conn_export ||
395 !exp_connect_lock_convert(lock->l_conn_export))
398 if (!wanted || !bits || ldlm_is_cancel(lock))
401 /* do not convert locks other than DOM for now */
402 if (!((bits | wanted) & MDS_INODELOCK_DOM))
405 /* We may have already remaining bits in some other lock so
406 * lock convert will leave us just extra lock for the same bit.
407 * Check if client has other lock with the same bits and the same
408 * or lower mode and don't convert if any.
410 switch (lock->l_req_mode) {
424 /* do not convert other modes */
428 /* is lock is too old to be converted? */
429 lock_res_and_lock(lock);
430 if (ktime_after(ktime_get(),
431 ktime_add(lock->l_last_used, ns->ns_dirty_age_limit))) {
432 unlock_res_and_lock(lock);
435 unlock_res_and_lock(lock);
437 inode = ll_inode_from_resource_lock(lock);
438 ll_have_md_lock(inode, &bits, mode);
443 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *ld,
444 void *data, int flag)
446 struct lustre_handle lockh;
452 case LDLM_CB_BLOCKING:
454 __u64 cancel_flags = LCF_ASYNC;
456 /* if lock convert is not needed then still have to
457 * pass lock via ldlm_cli_convert() to keep all states
458 * correct, set cancel_bits to full lock bits to cause
459 * full cancel to happen.
461 if (!ll_md_need_convert(lock)) {
462 lock_res_and_lock(lock);
463 lock->l_policy_data.l_inodebits.cancel_bits =
464 lock->l_policy_data.l_inodebits.bits;
465 unlock_res_and_lock(lock);
467 rc = ldlm_cli_convert(lock, cancel_flags);
470 /* continue with cancel otherwise */
471 ldlm_lock2handle(lock, &lockh);
472 rc = ldlm_cli_cancel(&lockh, cancel_flags);
474 CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
479 case LDLM_CB_CANCELING:
481 __u64 to_cancel = lock->l_policy_data.l_inodebits.bits;
483 /* Nothing to do for non-granted locks */
484 if (!ldlm_is_granted(lock))
487 /* If 'ld' is supplied then bits to be cancelled are passed
488 * implicitly by lock converting and cancel_bits from 'ld'
489 * should be used. Otherwise full cancel is being performed
490 * and lock inodebits are used.
492 * Note: we cannot rely on cancel_bits in lock itself at this
493 * moment because they can be changed by concurrent thread,
494 * so ldlm_cli_inodebits_convert() pass cancel bits implicitly
498 /* partial bits cancel allowed only during convert */
499 LASSERT(ldlm_is_converting(lock));
500 /* mask cancel bits by lock bits so only no any unused
501 * bits are passed to ll_lock_cancel_bits()
503 to_cancel &= ld->l_policy_data.l_inodebits.cancel_bits;
505 ll_lock_cancel_bits(lock, to_cancel);
515 __u32 ll_i2suppgid(struct inode *i)
517 if (in_group_p(i->i_gid))
518 return (__u32)from_kgid(&init_user_ns, i->i_gid);
520 return (__u32) __kgid_val(INVALID_GID);
523 /* Pack the required supplementary groups into the supplied groups array.
524 * If we don't need to use the groups from the target inode(s) then we
525 * instead pack one or more groups from the user's supplementary group
526 * array in case it might be useful. Not needed if doing an MDS-side upcall. */
527 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
530 LASSERT(suppgids != NULL);
532 suppgids[0] = ll_i2suppgid(i1);
535 suppgids[1] = ll_i2suppgid(i2);
541 * try to reuse three types of dentry:
542 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
543 * by concurrent .revalidate).
544 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
545 * be cleared by others calling d_lustre_revalidate).
546 * 3. DISCONNECTED alias.
548 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
550 struct dentry *alias, *discon_alias, *invalid_alias;
552 if (hlist_empty(&inode->i_dentry))
555 discon_alias = invalid_alias = NULL;
557 spin_lock(&inode->i_lock);
558 hlist_for_each_entry(alias, &inode->i_dentry, d_alias) {
559 LASSERT(alias != dentry);
561 spin_lock(&alias->d_lock);
562 if ((alias->d_flags & DCACHE_DISCONNECTED) &&
563 S_ISDIR(inode->i_mode))
564 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
565 discon_alias = alias;
566 else if (alias->d_parent == dentry->d_parent &&
567 alias->d_name.hash == dentry->d_name.hash &&
568 alias->d_name.len == dentry->d_name.len &&
569 memcmp(alias->d_name.name, dentry->d_name.name,
570 dentry->d_name.len) == 0)
571 invalid_alias = alias;
572 spin_unlock(&alias->d_lock);
577 alias = invalid_alias ?: discon_alias ?: NULL;
579 spin_lock(&alias->d_lock);
581 spin_unlock(&alias->d_lock);
583 spin_unlock(&inode->i_lock);
589 * Similar to d_splice_alias(), but lustre treats invalid alias
590 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
592 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
598 new = ll_find_alias(inode, de);
608 "Reuse dentry %p inode %p refc %d flags %#x\n",
609 new, new->d_inode, ll_d_count(new), new->d_flags);
618 /* this needs only to be done for foreign symlink dirs as
619 * DCACHE_SYMLINK_TYPE is already set by d_flags_for_inode()
620 * kernel routine for files with symlink ops (ie, real symlink)
622 if (inode && S_ISDIR(inode->i_mode) &&
623 ll_sbi_has_foreign_symlink(ll_i2sbi(inode)) &&
624 #ifdef HAVE_IOP_GET_LINK
625 inode->i_op->get_link) {
627 inode->i_op->follow_link) {
629 CDEBUG(D_INFO, "%s: inode "DFID": faking foreign dir as a symlink\n",
630 ll_i2sbi(inode)->ll_fsname, PFID(ll_inode2fid(inode)));
631 spin_lock(&de->d_lock);
632 /* like d_flags_for_inode() already does for files */
633 de->d_flags = (de->d_flags & ~DCACHE_ENTRY_TYPE) |
635 spin_unlock(&de->d_lock);
638 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
639 de, de->d_inode, ll_d_count(de), de->d_flags);
643 static int ll_lookup_it_finish(struct ptlrpc_request *request,
644 struct lookup_intent *it,
645 struct inode *parent, struct dentry **de,
646 void *secctx, __u32 secctxlen,
647 void *encctx, __u32 encctxlen,
648 ktime_t kstart, bool encrypt)
650 struct inode *inode = NULL;
653 struct dentry *alias;
656 /* NB 1 request reference will be taken away by ll_intent_lock()
658 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
660 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
661 struct req_capsule *pill = &request->rq_pill;
662 struct mdt_body *body = req_capsule_server_get(pill,
665 rc = ll_prep_inode(&inode, &request->rq_pill, (*de)->d_sb, it);
669 /* If encryption context was returned by MDT, put it in
670 * inode now to save an extra getxattr and avoid deadlock.
672 if (body->mbo_valid & OBD_MD_ENCCTX) {
673 encctx = req_capsule_server_get(pill, &RMF_FILE_ENCCTX);
674 encctxlen = req_capsule_get_size(pill,
680 "server returned encryption ctx for "DFID"\n",
681 PFID(ll_inode2fid(inode)));
682 rc = ll_xattr_cache_insert(inode,
683 LL_XATTR_NAME_ENCRYPTION_CONTEXT,
686 CWARN("%s: cannot set enc ctx for "DFID": rc = %d\n",
687 ll_i2sbi(inode)->ll_fsname,
688 PFID(ll_inode2fid(inode)), rc);
690 rc = llcrypt_get_encryption_info(inode);
693 "cannot get enc info for "DFID": rc = %d\n",
694 PFID(ll_inode2fid(inode)), rc);
699 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
700 /* OPEN can return data if lock has DoM+LAYOUT bits set */
701 if (it->it_op & IT_OPEN &&
702 bits & MDS_INODELOCK_DOM && bits & MDS_INODELOCK_LAYOUT)
703 ll_dom_finish_open(inode, request);
705 /* We used to query real size from OSTs here, but actually
706 * this is not needed. For stat() calls size would be updated
707 * from subsequent do_revalidate()->ll_inode_revalidate_it() in
709 * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
710 * Everybody else who needs correct file size would call
711 * ll_glimpse_size or some equivalent themselves anyway.
715 /* If security context was returned by MDT, put it in
716 * inode now to save an extra getxattr from security hooks,
717 * and avoid deadlock.
719 if (body->mbo_valid & OBD_MD_SECCTX) {
720 secctx = req_capsule_server_get(pill, &RMF_FILE_SECCTX);
721 secctxlen = req_capsule_get_size(pill,
726 CDEBUG(D_SEC, "server returned security context"
728 PFID(ll_inode2fid(inode)));
731 if (secctx != NULL && secctxlen != 0) {
732 /* no need to protect selinux_inode_setsecurity() by
733 * inode_lock. Taking it would lead to a client deadlock
736 rc = security_inode_notifysecctx(inode, secctx,
739 CWARN("%s: cannot set security context for "DFID": rc = %d\n",
740 ll_i2sbi(inode)->ll_fsname,
741 PFID(ll_inode2fid(inode)),
746 /* Only hash *de if it is unhashed (new dentry).
747 * Atoimc_open may passin hashed dentries for open.
749 alias = ll_splice_alias(inode, *de);
751 GOTO(out, rc = PTR_ERR(alias));
755 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
756 /* we have lookup look - unhide dentry */
757 if (bits & MDS_INODELOCK_LOOKUP)
758 d_lustre_revalidate(*de);
761 rc = llcrypt_get_encryption_info(inode);
764 if (!llcrypt_has_encryption_key(inode))
765 GOTO(out, rc = -ENOKEY);
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 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
781 ll_i2info(parent)->lli_lsm_md,
783 (*de)->d_name.len, &fid);
788 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
790 d_lustre_revalidate(*de);
791 ll_intent_release(&parent_it);
795 if (it_disposition(it, DISP_OPEN_CREATE)) {
796 ll_stats_ops_tally(ll_i2sbi(parent), LPROC_LL_MKNOD,
797 ktime_us_delta(ktime_get(), kstart));
803 if (rc != 0 && it->it_op & IT_OPEN) {
804 ll_intent_drop_lock(it);
805 ll_open_cleanup((*de)->d_sb, &request->rq_pill);
811 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
812 struct lookup_intent *it,
813 void **secctx, __u32 *secctxlen,
814 struct pcc_create_attach *pca,
816 void **encctx, __u32 *encctxlen)
818 ktime_t kstart = ktime_get();
819 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
820 struct dentry *save = dentry, *retval;
821 struct ptlrpc_request *req = NULL;
822 struct md_op_data *op_data = NULL;
823 struct lov_user_md *lum = NULL;
826 char secctx_name[XATTR_NAME_MAX + 1];
830 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
831 RETURN(ERR_PTR(-ENAMETOOLONG));
833 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), intent=%s\n",
834 dentry, PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
836 if (d_mountpoint(dentry))
837 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
839 if (it == NULL || it->it_op == IT_GETXATTR)
842 if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
843 rc = ll_revalidate_statahead(parent, &dentry, 0);
845 RETURN(dentry == save ? NULL : dentry);
848 if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE &&
849 dentry->d_sb->s_flags & SB_RDONLY)
850 RETURN(ERR_PTR(-EROFS));
852 if (it->it_op & IT_CREAT)
853 opc = LUSTRE_OPC_CREATE;
855 opc = LUSTRE_OPC_ANY;
857 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
858 dentry->d_name.len, 0, opc, NULL);
860 GOTO(out, retval = ERR_CAST(op_data));
862 /* enforce umask if acl disabled or MDS doesn't support umask */
863 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
864 it->it_create_mode &= ~current_umask();
866 if (it->it_op & IT_CREAT &&
867 ll_i2sbi(parent)->ll_flags & LL_SBI_FILE_SECCTX) {
868 rc = ll_dentry_init_security(dentry, it->it_create_mode,
870 &op_data->op_file_secctx_name,
871 &op_data->op_file_secctx,
872 &op_data->op_file_secctx_size);
874 GOTO(out, retval = ERR_PTR(rc));
876 *secctx = op_data->op_file_secctx;
877 if (secctxlen != NULL)
878 *secctxlen = op_data->op_file_secctx_size;
882 if (secctxlen != NULL)
885 if (it->it_op & IT_CREAT && encrypt) {
886 /* Volatile file name may look like:
887 * <parent>/LUSTRE_VOLATILE_HDR:<mdt_index>:<random>:fd=<fd>
888 * where fd is opened descriptor of reference file.
890 if (unlikely(filename_is_volatile(dentry->d_name.name,
891 dentry->d_name.len, NULL))) {
892 int ctx_size = LLCRYPT_ENC_CTX_SIZE;
893 struct lustre_sb_info *lsi;
894 struct file *ref_file;
895 struct inode *ref_inode;
896 char *p, *q, *fd_str;
900 p = strnstr(dentry->d_name.name, ":fd=",
902 if (!p || strlen(p + 4) == 0)
903 GOTO(out, retval = ERR_PTR(-EINVAL));
905 q = strchrnul(p + 4, ':');
906 fd_str = kstrndup(p + 4, q - p - 4, GFP_NOFS);
908 GOTO(out, retval = ERR_PTR(-ENOMEM));
909 rc = kstrtouint(fd_str, 10, &fd);
912 GOTO(inherit, rc = -EINVAL);
916 GOTO(inherit, rc = -EINVAL);
918 ref_inode = file_inode(ref_file);
921 GOTO(inherit, rc = -EINVAL);
924 lsi = s2lsi(ref_inode->i_sb);
927 OBD_ALLOC(ctx, ctx_size);
929 GOTO(out, retval = ERR_PTR(-ENOMEM));
931 #ifdef CONFIG_LL_ENCRYPTION
932 rc = lsi->lsi_cop->get_context(ref_inode,
938 OBD_FREE(ctx, ctx_size);
944 OBD_FREE(ctx, ctx_size);
948 op_data->op_file_encctx_size = rc;
949 if (rc == ctx_size) {
950 op_data->op_file_encctx = ctx;
952 OBD_ALLOC(op_data->op_file_encctx,
953 op_data->op_file_encctx_size);
954 if (!op_data->op_file_encctx) {
955 OBD_FREE(ctx, ctx_size);
956 GOTO(out, retval = ERR_PTR(-ENOMEM));
958 memcpy(op_data->op_file_encctx, ctx,
959 op_data->op_file_encctx_size);
960 OBD_FREE(ctx, ctx_size);
965 rc = llcrypt_inherit_context(parent, NULL, op_data,
968 GOTO(out, retval = ERR_PTR(rc));
971 *encctx = op_data->op_file_encctx;
972 if (encctxlen != NULL)
973 *encctxlen = op_data->op_file_encctx_size;
977 if (encctxlen != NULL)
981 /* ask for security context upon intent */
982 if (it->it_op & (IT_LOOKUP | IT_GETATTR | IT_OPEN)) {
983 /* get name of security xattr to request to server */
984 rc = ll_listsecurity(parent, secctx_name,
985 sizeof(secctx_name));
987 CDEBUG(D_SEC, "cannot get security xattr name for "
989 PFID(ll_inode2fid(parent)), rc);
991 op_data->op_file_secctx_name = secctx_name;
992 op_data->op_file_secctx_name_size = rc;
993 CDEBUG(D_SEC, "'%.*s' is security xattr for "DFID"\n",
994 rc, secctx_name, PFID(ll_inode2fid(parent)));
998 if (pca && pca->pca_dataset) {
1001 GOTO(out, retval = ERR_PTR(-ENOMEM));
1003 lum->lmm_magic = LOV_USER_MAGIC_V1;
1004 lum->lmm_pattern = LOV_PATTERN_F_RELEASED | LOV_PATTERN_RAID0;
1005 op_data->op_data = lum;
1006 op_data->op_data_size = sizeof(*lum);
1007 op_data->op_archive_id = pca->pca_dataset->pccd_rwid;
1008 it->it_flags |= MDS_OPEN_PCC;
1011 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
1012 &ll_md_blocking_ast, 0);
1013 /* If the MDS allows the client to chgrp (CFS_SETGRP_PERM), but the
1014 * client does not know which suppgid should be sent to the MDS, or
1015 * some other(s) changed the target file's GID after this RPC sent
1016 * to the MDS with the suppgid as the original GID, then we should
1017 * try again with right suppgid. */
1018 if (rc == -EACCES && it->it_op & IT_OPEN &&
1019 it_disposition(it, DISP_OPEN_DENY)) {
1020 struct mdt_body *body;
1022 LASSERT(req != NULL);
1024 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1025 if (op_data->op_suppgids[0] == body->mbo_gid ||
1026 op_data->op_suppgids[1] == body->mbo_gid ||
1027 !in_group_p(make_kgid(&init_user_ns, body->mbo_gid)))
1028 GOTO(out, retval = ERR_PTR(-EACCES));
1030 fid_zero(&op_data->op_fid2);
1031 op_data->op_suppgids[1] = body->mbo_gid;
1032 ptlrpc_req_finished(req);
1034 ll_intent_release(it);
1035 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
1036 &ll_md_blocking_ast, 0);
1040 GOTO(out, retval = ERR_PTR(rc));
1042 if (pca && pca->pca_dataset) {
1043 rc = pcc_inode_create(parent->i_sb, pca->pca_dataset,
1047 GOTO(out, retval = ERR_PTR(rc));
1050 /* dir layout may change */
1051 ll_unlock_md_op_lsm(op_data);
1052 rc = ll_lookup_it_finish(req, it, parent, &dentry,
1053 secctx != NULL ? *secctx : NULL,
1054 secctxlen != NULL ? *secctxlen : 0,
1055 encctx != NULL ? *encctx : NULL,
1056 encctxlen != NULL ? *encctxlen : 0,
1059 ll_intent_release(it);
1060 GOTO(out, retval = ERR_PTR(rc));
1063 if ((it->it_op & IT_OPEN) && dentry->d_inode &&
1064 !S_ISREG(dentry->d_inode->i_mode) &&
1065 !S_ISDIR(dentry->d_inode->i_mode)) {
1066 ll_release_openhandle(dentry, it);
1068 ll_lookup_finish_locks(it, dentry);
1070 GOTO(out, retval = (dentry == save) ? NULL : dentry);
1073 if (op_data != NULL && !IS_ERR(op_data)) {
1074 if (secctx != NULL && secctxlen != NULL) {
1075 /* caller needs sec ctx info, so reset it in op_data to
1076 * prevent it from being freed */
1077 op_data->op_file_secctx = NULL;
1078 op_data->op_file_secctx_size = 0;
1080 if (encctx != NULL && encctxlen != NULL &&
1081 it->it_op & IT_CREAT && encrypt) {
1082 /* caller needs enc ctx info, so reset it in op_data to
1083 * prevent it from being freed
1085 op_data->op_file_encctx = NULL;
1086 op_data->op_file_encctx_size = 0;
1088 ll_finish_md_op_data(op_data);
1094 ptlrpc_req_finished(req);
1098 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
1101 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
1104 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), flags=%u\n",
1105 dentry, PFID(ll_inode2fid(parent)), parent, flags);
1108 * Optimize away (CREATE && !OPEN). Let .create handle the race.
1109 * but only if we have write permissions there, otherwise we need
1110 * to proceed with lookup. LU-4185
1112 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
1113 (inode_permission(parent, MAY_WRITE | MAY_EXEC) == 0))
1116 if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
1120 de = ll_lookup_it(parent, dentry, itp, NULL, NULL, NULL, false,
1124 ll_intent_release(itp);
1129 #ifdef FMODE_CREATED /* added in Linux v4.18-rc1-20-g73a09dd */
1130 # define ll_is_opened(o, f) ((f)->f_mode & FMODE_OPENED)
1131 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL)
1132 # define ll_last_arg
1133 # define ll_set_created(o, f) \
1135 (f)->f_mode |= FMODE_CREATED; \
1139 # define ll_is_opened(o, f) (*(o))
1140 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL, (o))
1141 # define ll_last_arg , int *opened
1142 # define ll_set_created(o, f) \
1144 *(o) |= FILE_CREATED; \
1150 * For cached negative dentry and new dentry, handle lookup/create/open
1153 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
1154 struct file *file, unsigned open_flags,
1155 umode_t mode ll_last_arg)
1157 struct lookup_intent *it;
1159 long long lookup_flags = LOOKUP_OPEN;
1160 void *secctx = NULL;
1161 __u32 secctxlen = 0;
1162 void *encctx = NULL;
1163 __u32 encctxlen = 0;
1164 struct ll_sb_info *sbi = NULL;
1165 struct pcc_create_attach pca = { NULL, NULL };
1166 bool encrypt = false;
1171 "VFS Op:name=%pd, dir="DFID"(%p), file %p, open_flags %x, mode %x opened %d\n",
1172 dentry, PFID(ll_inode2fid(dir)), dir, file, open_flags, mode,
1173 ll_is_opened(opened, file));
1175 /* Only negative dentries enter here */
1176 LASSERT(dentry->d_inode == NULL);
1178 if (!d_unhashed(dentry)) {
1179 /* A valid negative dentry that just passed revalidation,
1180 * there's little point to try and open it server-side,
1181 * even though there's a minuscule chance it might succeed.
1182 * Either way it's a valid race to just return -ENOENT here.
1184 if (!(open_flags & O_CREAT))
1187 /* Otherwise we just unhash it to be rehashed afresh via
1188 * lookup if necessary
1193 OBD_ALLOC(it, sizeof(*it));
1197 it->it_op = IT_OPEN;
1198 if (open_flags & O_CREAT) {
1199 it->it_op |= IT_CREAT;
1200 lookup_flags |= LOOKUP_CREATE;
1201 sbi = ll_i2sbi(dir);
1202 /* Volatile file is used for HSM restore, so do not use PCC */
1203 if (!filename_is_volatile(dentry->d_name.name,
1204 dentry->d_name.len, NULL)) {
1205 struct pcc_matcher item;
1206 struct pcc_dataset *dataset;
1208 item.pm_uid = from_kuid(&init_user_ns, current_uid());
1209 item.pm_gid = from_kgid(&init_user_ns, current_gid());
1210 item.pm_projid = ll_i2info(dir)->lli_projid;
1211 item.pm_name = &dentry->d_name;
1212 dataset = pcc_dataset_match_get(&sbi->ll_pcc_super,
1214 pca.pca_dataset = dataset;
1217 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
1218 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
1219 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1221 if (ll_sbi_has_encrypt(ll_i2sbi(dir)) && IS_ENCRYPTED(dir)) {
1222 /* in case of create, this is going to be a regular file because
1223 * we set S_IFREG bit on it->it_create_mode above
1225 rc = llcrypt_get_encryption_info(dir);
1227 GOTO(out_release, rc);
1228 if (open_flags & O_CREAT) {
1229 if (!llcrypt_has_encryption_key(dir))
1230 GOTO(out_release, rc = -ENOKEY);
1235 OBD_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE2, cfs_fail_val);
1237 /* We can only arrive at this path when we have no inode, so
1238 * we only need to request open lock if it was requested
1241 if (ll_i2sbi(dir)->ll_oc_thrsh_count == 1 &&
1242 exp_connect_flags2(ll_i2mdexp(dir)) &
1243 OBD_CONNECT2_ATOMIC_OPEN_LOCK)
1244 it->it_flags |= MDS_OPEN_LOCK;
1246 /* Dentry added to dcache tree in ll_lookup_it */
1247 de = ll_lookup_it(dir, dentry, it, &secctx, &secctxlen, &pca, encrypt,
1248 &encctx, &encctxlen);
1251 else if (de != NULL)
1254 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1257 if (it_disposition(it, DISP_OPEN_CREATE)) {
1258 /* Dentry instantiated in ll_create_it. */
1259 rc = ll_create_it(dir, dentry, it, secctx, secctxlen,
1260 encrypt, encctx, encctxlen);
1261 ll_security_release_secctx(secctx, secctxlen);
1262 llcrypt_free_ctx(encctx, encctxlen);
1264 /* We dget in ll_splice_alias. */
1270 rc = pcc_inode_create_fini(dentry->d_inode, &pca);
1274 GOTO(out_release, rc);
1277 ll_set_created(opened, file);
1279 /* Open the file with O_CREAT, but the file already
1280 * existed on MDT. This may happend in the case that
1281 * the LOOKUP ibits lock is revoked and the
1282 * corresponding dentry cache is deleted.
1283 * i.e. In the current Lustre, the truncate operation
1284 * will revoke the LOOKUP ibits lock, and the file
1285 * dentry cache will be invalidated. The following open
1286 * with O_CREAT flag will call into ->atomic_open, the
1287 * file was wrongly though as newly created file and
1288 * try to auto cache the file. So after client knows it
1289 * is not a DISP_OPEN_CREATE, it should cleanup the
1290 * already created PCC copy.
1292 pcc_create_attach_cleanup(dir->i_sb, &pca);
1294 if (open_flags & O_CREAT && encrypt &&
1296 rc = ll_set_encflags(dentry->d_inode, encctx,
1298 llcrypt_free_ctx(encctx, encctxlen);
1300 GOTO(out_release, rc);
1304 /* check also if a foreign file is openable */
1305 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN) &&
1306 ll_foreign_is_openable(dentry, open_flags)) {
1308 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1309 /* We cannot call open here as it might
1310 * deadlock. This case is unreachable in
1311 * practice because of OBD_CONNECT_NODEVOH. */
1312 rc = finish_no_open(file, de);
1314 file->private_data = it;
1315 rc = ll_finish_open(file, dentry, opened);
1316 /* We dget in ll_splice_alias. finish_open takes
1317 * care of dget for fd open.
1323 rc = finish_no_open(file, de);
1326 pcc_create_attach_cleanup(dir->i_sb, &pca);
1330 ll_intent_release(it);
1331 OBD_FREE(it, sizeof(*it));
1336 /* We depend on "mode" being set with the proper file type/umask by now */
1337 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
1339 struct inode *inode = NULL;
1340 struct ptlrpc_request *request = NULL;
1341 struct ll_sb_info *sbi = ll_i2sbi(dir);
1345 LASSERT(it && it->it_disposition);
1347 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
1348 request = it->it_request;
1349 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
1350 rc = ll_prep_inode(&inode, &request->rq_pill, dir->i_sb, it);
1352 GOTO(out, inode = ERR_PTR(rc));
1354 /* Pause to allow for a race with concurrent access by fid */
1355 OBD_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_NODE_PAUSE, cfs_fail_val);
1357 /* We asked for a lock on the directory, but were granted a
1358 * lock on the inode. Since we finally have an inode pointer,
1359 * stuff it in the lock. */
1360 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
1361 PFID(ll_inode2fid(inode)), inode);
1362 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
1365 ptlrpc_req_finished(request);
1370 * By the time this is called, we already have created the directory cache
1371 * entry for the new file, but it is so far negative - it has no inode.
1373 * We defer creating the OBD object(s) until open, to keep the intent and
1374 * non-intent code paths similar, and also because we do not have the MDS
1375 * inode number before calling ll_create_node() (which is needed for LOV),
1376 * so we would need to do yet another RPC to the MDS to store the LOV EA
1377 * data on the MDS. If needed, we would pass the PACKED lmm as data and
1378 * lmm_size in datalen (the MDS still has code which will handle that).
1380 * If the create succeeds, we fill in the inode information
1381 * with d_instantiate().
1383 static int ll_create_it(struct inode *dir, struct dentry *dentry,
1384 struct lookup_intent *it,
1385 void *secctx, __u32 secctxlen, bool encrypt,
1386 void *encctx, __u32 encctxlen)
1388 struct inode *inode;
1393 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), intent=%s\n",
1394 dentry, PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
1396 rc = it_open_error(DISP_OPEN_CREATE, it);
1400 inode = ll_create_node(dir, it);
1402 RETURN(PTR_ERR(inode));
1404 if ((ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX) &&
1406 /* must be done before d_instantiate, because it calls
1407 * security_d_instantiate, which means a getxattr if security
1408 * context is not set yet */
1409 /* no need to protect selinux_inode_setsecurity() by
1410 * inode_lock. Taking it would lead to a client deadlock
1413 rc = security_inode_notifysecctx(inode, secctx, secctxlen);
1418 d_instantiate(dentry, inode);
1421 rc = ll_set_encflags(inode, encctx, encctxlen, true);
1426 if (!(ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX)) {
1427 rc = ll_inode_init_security(dentry, inode, dir);
1432 ll_set_lock_data(ll_i2sbi(dir)->ll_md_exp, inode, it, &bits);
1433 if (bits & MDS_INODELOCK_LOOKUP)
1434 d_lustre_revalidate(dentry);
1439 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
1441 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
1445 if (body->mbo_valid & OBD_MD_FLMTIME &&
1446 body->mbo_mtime > inode->i_mtime.tv_sec) {
1448 "setting fid " DFID " mtime from %lld to %llu\n",
1449 PFID(ll_inode2fid(inode)),
1450 (s64)inode->i_mtime.tv_sec, body->mbo_mtime);
1451 inode->i_mtime.tv_sec = body->mbo_mtime;
1454 if (body->mbo_valid & OBD_MD_FLCTIME &&
1455 body->mbo_ctime > inode->i_ctime.tv_sec)
1456 inode->i_ctime.tv_sec = body->mbo_ctime;
1459 static int ll_new_node(struct inode *dir, struct dentry *dchild,
1460 const char *tgt, umode_t mode, int rdev, __u32 opc)
1462 struct qstr *name = &dchild->d_name;
1463 struct ptlrpc_request *request = NULL;
1464 struct md_op_data *op_data = NULL;
1465 struct inode *inode = NULL;
1466 struct ll_sb_info *sbi = ll_i2sbi(dir);
1468 bool encrypt = false;
1472 if (unlikely(tgt != NULL))
1473 tgt_len = strlen(tgt) + 1;
1476 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1477 name->len, 0, opc, NULL);
1478 if (IS_ERR(op_data))
1479 GOTO(err_exit, err = PTR_ERR(op_data));
1481 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1482 err = ll_dentry_init_security(dchild, mode, &dchild->d_name,
1483 &op_data->op_file_secctx_name,
1484 &op_data->op_file_secctx,
1485 &op_data->op_file_secctx_size);
1487 GOTO(err_exit, err);
1490 if (ll_sbi_has_encrypt(sbi) &&
1491 ((IS_ENCRYPTED(dir) &&
1492 (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) ||
1493 (unlikely(llcrypt_dummy_context_enabled(dir)) && S_ISDIR(mode)))) {
1494 err = llcrypt_get_encryption_info(dir);
1496 GOTO(err_exit, err);
1497 if (!llcrypt_has_encryption_key(dir))
1498 GOTO(err_exit, err = -ENOKEY);
1503 err = llcrypt_inherit_context(dir, NULL, op_data, false);
1505 GOTO(err_exit, err);
1508 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
1509 from_kuid(&init_user_ns, current_fsuid()),
1510 from_kgid(&init_user_ns, current_fsgid()),
1511 cfs_curproc_cap_pack(), rdev, &request);
1512 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 58, 0)
1514 * server < 2.12.58 doesn't pack default LMV in intent_getattr reply,
1515 * fetch default LMV here.
1517 if (unlikely(err == -EREMOTE)) {
1518 struct ll_inode_info *lli = ll_i2info(dir);
1519 struct lmv_user_md *lum;
1523 ptlrpc_req_finished(request);
1526 err2 = ll_dir_getstripe(dir, (void **)&lum, &lumsize, &request,
1527 OBD_MD_DEFAULT_MEA);
1528 ll_finish_md_op_data(op_data);
1531 struct lustre_md md = { NULL };
1533 md.body = req_capsule_server_get(&request->rq_pill,
1536 GOTO(err_exit, err = -EPROTO);
1538 OBD_ALLOC_PTR(md.default_lmv);
1539 if (!md.default_lmv)
1540 GOTO(err_exit, err = -ENOMEM);
1542 md.default_lmv->lsm_md_magic = lum->lum_magic;
1543 md.default_lmv->lsm_md_stripe_count =
1544 lum->lum_stripe_count;
1545 md.default_lmv->lsm_md_master_mdt_index =
1546 lum->lum_stripe_offset;
1547 md.default_lmv->lsm_md_hash_type = lum->lum_hash_type;
1548 md.default_lmv->lsm_md_max_inherit =
1549 lum->lum_max_inherit;
1550 md.default_lmv->lsm_md_max_inherit_rr =
1551 lum->lum_max_inherit_rr;
1553 err = ll_update_inode(dir, &md);
1554 md_free_lustre_md(sbi->ll_md_exp, &md);
1556 GOTO(err_exit, err);
1557 } else if (err2 == -ENODATA && lli->lli_default_lsm_md) {
1559 * If there are no default stripe EA on the MDT, but the
1560 * client has default stripe, then it probably means
1561 * default stripe EA has just been deleted.
1563 down_write(&lli->lli_lsm_sem);
1564 if (lli->lli_default_lsm_md)
1565 OBD_FREE_PTR(lli->lli_default_lsm_md);
1566 lli->lli_default_lsm_md = NULL;
1567 up_write(&lli->lli_lsm_sem);
1569 GOTO(err_exit, err);
1572 ptlrpc_req_finished(request);
1579 GOTO(err_exit, err);
1581 ll_update_times(request, dir);
1583 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_NEWNODE_PAUSE, cfs_fail_val);
1585 err = ll_prep_inode(&inode, &request->rq_pill, dchild->d_sb, NULL);
1587 GOTO(err_exit, err);
1589 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1590 /* must be done before d_instantiate, because it calls
1591 * security_d_instantiate, which means a getxattr if security
1592 * context is not set yet */
1593 /* no need to protect selinux_inode_setsecurity() by
1594 * inode_lock. Taking it would lead to a client deadlock
1597 err = security_inode_notifysecctx(inode,
1598 op_data->op_file_secctx,
1599 op_data->op_file_secctx_size);
1601 GOTO(err_exit, err);
1604 d_instantiate(dchild, inode);
1607 err = ll_set_encflags(inode, op_data->op_file_encctx,
1608 op_data->op_file_encctx_size, true);
1610 GOTO(err_exit, err);
1613 if (!(sbi->ll_flags & LL_SBI_FILE_SECCTX)) {
1614 err = ll_inode_init_security(dchild, inode, dir);
1616 GOTO(err_exit, err);
1621 if (request != NULL)
1622 ptlrpc_req_finished(request);
1624 if (!IS_ERR_OR_NULL(op_data))
1625 ll_finish_md_op_data(op_data);
1630 static int ll_mknod(struct inode *dir, struct dentry *dchild, umode_t mode,
1633 ktime_t kstart = ktime_get();
1637 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p) mode %o dev %x\n",
1638 dchild, PFID(ll_inode2fid(dir)), dir, mode, rdev);
1640 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1641 mode &= ~current_umask();
1643 switch (mode & S_IFMT) {
1652 err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
1663 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD,
1664 ktime_us_delta(ktime_get(), kstart));
1670 * Plain create. Intent create is handled in atomic_open.
1672 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1673 umode_t mode, bool want_excl)
1675 ktime_t kstart = ktime_get();
1678 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1681 "VFS Op:name=%pd, dir="DFID"(%p), flags=%u, excl=%d\n",
1682 dentry, PFID(ll_inode2fid(dir)), dir, mode, want_excl);
1684 /* Using mknod(2) to create a regular file is designed to not recognize
1685 * volatile file name, so we use ll_mknod() here. */
1686 rc = ll_mknod(dir, dentry, mode, 0);
1688 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, unhashed %d\n",
1689 dentry, d_unhashed(dentry));
1692 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE,
1693 ktime_us_delta(ktime_get(), kstart));
1698 static int ll_symlink(struct inode *dir, struct dentry *dchild,
1699 const char *oldpath)
1701 ktime_t kstart = ktime_get();
1705 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), target=%.*s\n",
1706 dchild, PFID(ll_inode2fid(dir)), dir, 3000, oldpath);
1708 err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO, 0,
1709 LUSTRE_OPC_SYMLINK);
1712 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK,
1713 ktime_us_delta(ktime_get(), kstart));
1718 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1719 struct dentry *new_dentry)
1721 struct inode *src = old_dentry->d_inode;
1722 struct qstr *name = &new_dentry->d_name;
1723 struct ll_sb_info *sbi = ll_i2sbi(dir);
1724 struct ptlrpc_request *request = NULL;
1725 struct md_op_data *op_data;
1726 ktime_t kstart = ktime_get();
1731 "VFS Op: inode="DFID"(%p), dir="DFID"(%p), target=%pd\n",
1732 PFID(ll_inode2fid(src)), src,
1733 PFID(ll_inode2fid(dir)), dir, new_dentry);
1735 err = llcrypt_prepare_link(old_dentry, dir, new_dentry);
1739 op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
1740 0, LUSTRE_OPC_ANY, NULL);
1741 if (IS_ERR(op_data))
1742 RETURN(PTR_ERR(op_data));
1744 err = md_link(sbi->ll_md_exp, op_data, &request);
1745 ll_finish_md_op_data(op_data);
1749 ll_update_times(request, dir);
1750 ll_stats_ops_tally(sbi, LPROC_LL_LINK,
1751 ktime_us_delta(ktime_get(), kstart));
1754 ptlrpc_req_finished(request);
1758 static int ll_mkdir(struct inode *dir, struct dentry *dchild, umode_t mode)
1760 ktime_t kstart = ktime_get();
1764 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p)\n",
1765 dchild, PFID(ll_inode2fid(dir)), dir);
1767 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1768 mode &= ~current_umask();
1770 mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
1772 err = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1774 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR,
1775 ktime_us_delta(ktime_get(), kstart));
1780 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1782 struct qstr *name = &dchild->d_name;
1783 struct ptlrpc_request *request = NULL;
1784 struct md_op_data *op_data;
1785 ktime_t kstart = ktime_get();
1790 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p)\n",
1791 dchild, PFID(ll_inode2fid(dir)), dir);
1793 if (unlikely(d_mountpoint(dchild)))
1796 /* some foreign dir may not be allowed to be removed */
1797 if (!ll_foreign_is_removable(dchild, false))
1800 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1801 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1802 if (IS_ERR(op_data))
1803 RETURN(PTR_ERR(op_data));
1805 if (dchild->d_inode != NULL)
1806 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1808 op_data->op_fid2 = op_data->op_fid3;
1809 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1810 ll_finish_md_op_data(op_data);
1812 struct mdt_body *body;
1814 ll_update_times(request, dir);
1815 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1816 ktime_us_delta(ktime_get(), kstart));
1819 * The server puts attributes in on the last unlink, use them
1820 * to update the link count so the inode can be freed
1823 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1824 if (body->mbo_valid & OBD_MD_FLNLINK)
1825 set_nlink(dchild->d_inode, body->mbo_nlink);
1828 ptlrpc_req_finished(request);
1836 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
1838 struct ptlrpc_request *request = NULL;
1839 struct md_op_data *op_data;
1840 ktime_t kstart = ktime_get();
1844 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1845 namelen, name, PFID(ll_inode2fid(dir)), dir);
1847 op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
1848 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1849 if (IS_ERR(op_data))
1850 RETURN(PTR_ERR(op_data));
1851 op_data->op_cli_flags |= CLI_RM_ENTRY;
1852 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1853 ll_finish_md_op_data(op_data);
1855 ll_update_times(request, dir);
1857 ptlrpc_req_finished(request);
1859 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1860 ktime_us_delta(ktime_get(), kstart));
1864 static int ll_unlink(struct inode *dir, struct dentry *dchild)
1866 struct qstr *name = &dchild->d_name;
1867 struct ptlrpc_request *request = NULL;
1868 struct md_op_data *op_data;
1869 struct mdt_body *body;
1870 ktime_t kstart = ktime_get();
1875 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p)\n",
1876 dchild, PFID(ll_inode2fid(dir)), dir);
1879 * XXX: unlink bind mountpoint maybe call to here,
1880 * just check it as vfs_unlink does.
1882 if (unlikely(d_mountpoint(dchild)))
1885 /* some foreign file/dir may not be allowed to be unlinked */
1886 if (!ll_foreign_is_removable(dchild, false))
1889 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
1890 LUSTRE_OPC_ANY, NULL);
1891 if (IS_ERR(op_data))
1892 RETURN(PTR_ERR(op_data));
1894 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1895 /* notify lower layer if inode has dirty pages */
1896 if (S_ISREG(dchild->d_inode->i_mode) &&
1897 ll_i2info(dchild->d_inode)->lli_clob &&
1898 dirty_cnt(dchild->d_inode))
1899 op_data->op_cli_flags |= CLI_DIRTY_DATA;
1900 op_data->op_fid2 = op_data->op_fid3;
1901 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1902 ll_finish_md_op_data(op_data);
1907 * The server puts attributes in on the last unlink, use them to update
1908 * the link count so the inode can be freed immediately.
1910 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1911 if (body->mbo_valid & OBD_MD_FLNLINK)
1912 set_nlink(dchild->d_inode, body->mbo_nlink);
1914 ll_update_times(request, dir);
1917 ptlrpc_req_finished(request);
1919 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK,
1920 ktime_us_delta(ktime_get(), kstart));
1924 static int ll_rename(struct inode *src, struct dentry *src_dchild,
1925 struct inode *tgt, struct dentry *tgt_dchild
1926 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1927 , unsigned int flags
1931 struct qstr *src_name = &src_dchild->d_name;
1932 struct qstr *tgt_name = &tgt_dchild->d_name;
1933 struct ptlrpc_request *request = NULL;
1934 struct ll_sb_info *sbi = ll_i2sbi(src);
1935 struct md_op_data *op_data;
1936 ktime_t kstart = ktime_get();
1941 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1947 "VFS Op:oldname=%pd, src_dir="DFID"(%p), newname=%pd, tgt_dir="DFID"(%p)\n",
1948 src_dchild, PFID(ll_inode2fid(src)), src,
1949 tgt_dchild, PFID(ll_inode2fid(tgt)), tgt);
1951 if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
1954 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1955 err = llcrypt_prepare_rename(src, src_dchild, tgt, tgt_dchild, flags);
1957 err = llcrypt_prepare_rename(src, src_dchild, tgt, tgt_dchild, 0);
1961 /* we prevent an encrypted file from being renamed
1962 * into an unencrypted dir
1964 if (IS_ENCRYPTED(src) && !IS_ENCRYPTED(tgt))
1967 if (src_dchild->d_inode)
1968 mode = src_dchild->d_inode->i_mode;
1970 if (tgt_dchild->d_inode)
1971 mode = tgt_dchild->d_inode->i_mode;
1973 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, mode,
1974 LUSTRE_OPC_ANY, NULL);
1975 if (IS_ERR(op_data))
1976 RETURN(PTR_ERR(op_data));
1978 if (src_dchild->d_inode)
1979 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1981 if (tgt_dchild->d_inode)
1982 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1984 err = md_rename(sbi->ll_md_exp, op_data,
1985 src_name->name, src_name->len,
1986 tgt_name->name, tgt_name->len, &request);
1987 ll_finish_md_op_data(op_data);
1989 ll_update_times(request, src);
1990 ll_update_times(request, tgt);
1993 ptlrpc_req_finished(request);
1996 d_move(src_dchild, tgt_dchild);
1997 ll_stats_ops_tally(sbi, LPROC_LL_RENAME,
1998 ktime_us_delta(ktime_get(), kstart));
2004 const struct inode_operations ll_dir_inode_operations = {
2006 .atomic_open = ll_atomic_open,
2007 .lookup = ll_lookup_nd,
2008 .create = ll_create_nd,
2009 /* We need all these non-raw things for NFSD, to not patch it. */
2010 .unlink = ll_unlink,
2013 .symlink = ll_symlink,
2015 .rename = ll_rename,
2016 .setattr = ll_setattr,
2017 .getattr = ll_getattr,
2018 .permission = ll_inode_permission,
2019 #ifdef HAVE_IOP_XATTR
2020 .setxattr = ll_setxattr,
2021 .getxattr = ll_getxattr,
2022 .removexattr = ll_removexattr,
2024 .listxattr = ll_listxattr,
2025 .get_acl = ll_get_acl,
2026 #ifdef HAVE_IOP_SET_ACL
2027 .set_acl = ll_set_acl,
2031 const struct inode_operations ll_special_inode_operations = {
2032 .setattr = ll_setattr,
2033 .getattr = ll_getattr,
2034 .permission = ll_inode_permission,
2035 #ifdef HAVE_IOP_XATTR
2036 .setxattr = ll_setxattr,
2037 .getxattr = ll_getxattr,
2038 .removexattr = ll_removexattr,
2040 .listxattr = ll_listxattr,
2041 .get_acl = ll_get_acl,
2042 #ifdef HAVE_IOP_SET_ACL
2043 .set_acl = ll_set_acl,