4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
34 #include <linux/sched.h>
36 #include <linux/quotaops.h>
37 #include <linux/highmem.h>
38 #include <linux/pagemap.h>
39 #include <linux/security.h>
40 #include <linux/user_namespace.h>
41 #include <linux/uidgid.h>
43 #define DEBUG_SUBSYSTEM S_LLITE
45 #include <obd_support.h>
46 #include <lustre_fid.h>
47 #include <lustre_dlm.h>
48 #include "llite_internal.h"
50 static int ll_create_it(struct inode *dir, struct dentry *dentry,
51 struct lookup_intent *it,
52 void *secctx, __u32 secctxlen, bool encrypt,
53 void *encctx, __u32 encctxlen);
55 /* called from iget5_locked->find_inode() under inode_lock spinlock */
56 static int ll_test_inode(struct inode *inode, void *opaque)
58 struct ll_inode_info *lli = ll_i2info(inode);
59 struct lustre_md *md = opaque;
61 if (unlikely(!(md->body->mbo_valid & OBD_MD_FLID))) {
62 CERROR("MDS body missing FID\n");
66 if (!lu_fid_eq(&lli->lli_fid, &md->body->mbo_fid1))
72 static int ll_set_inode(struct inode *inode, void *opaque)
74 struct ll_inode_info *lli = ll_i2info(inode);
75 struct mdt_body *body = ((struct lustre_md *)opaque)->body;
77 if (unlikely(!(body->mbo_valid & OBD_MD_FLID))) {
78 CERROR("MDS body missing FID\n");
82 lli->lli_fid = body->mbo_fid1;
83 if (unlikely(!(body->mbo_valid & OBD_MD_FLTYPE))) {
84 CERROR("Can not initialize inode "DFID" without object type: "
86 PFID(&lli->lli_fid), body->mbo_valid);
90 inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mbo_mode & S_IFMT);
91 if (unlikely(inode->i_mode == 0)) {
92 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
103 * Get an inode by inode number(@hash), which is already instantiated by
104 * the intent lookup).
106 struct inode *ll_iget(struct super_block *sb, ino_t hash,
107 struct lustre_md *md)
115 inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
117 RETURN(ERR_PTR(-ENOMEM));
119 if (inode->i_state & I_NEW) {
120 rc = ll_read_inode2(inode, md);
121 if (rc == 0 && S_ISREG(inode->i_mode) &&
122 ll_i2info(inode)->lli_clob == NULL)
123 rc = cl_file_inode_init(inode, md);
126 /* Let's clear directory lsm here, otherwise
127 * make_bad_inode() will reset the inode mode
128 * to regular, then ll_clear_inode will not
129 * be able to clear lsm_md */
130 if (S_ISDIR(inode->i_mode))
131 ll_dir_clear_lsm_md(inode);
132 make_bad_inode(inode);
133 unlock_new_inode(inode);
137 inode_has_no_xattr(inode);
138 unlock_new_inode(inode);
140 } else if (is_bad_inode(inode)) {
142 inode = ERR_PTR(-ESTALE);
143 } else if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
144 rc = ll_update_inode(inode, md);
145 CDEBUG(D_VFSTRACE, "got inode: "DFID"(%p): rc = %d\n",
146 PFID(&md->body->mbo_fid1), inode, rc);
148 if (S_ISDIR(inode->i_mode))
149 ll_dir_clear_lsm_md(inode);
158 /* mark negative sub file dentries invalid and prune unused dentries */
159 static void ll_prune_negative_children(struct inode *dir)
161 struct dentry *dentry;
162 struct dentry *child;
167 spin_lock(&dir->i_lock);
168 hlist_for_each_entry(dentry, &dir->i_dentry, d_alias) {
169 spin_lock(&dentry->d_lock);
170 list_for_each_entry(child, &dentry->d_subdirs, d_child) {
174 spin_lock_nested(&child->d_lock, DENTRY_D_LOCK_NESTED);
175 __d_lustre_invalidate(child);
176 if (!ll_d_count(child)) {
179 spin_unlock(&child->d_lock);
180 spin_unlock(&dentry->d_lock);
181 spin_unlock(&dir->i_lock);
183 CDEBUG(D_DENTRY, "prune negative dentry %pd\n",
189 spin_unlock(&child->d_lock);
191 spin_unlock(&dentry->d_lock);
193 spin_unlock(&dir->i_lock);
198 int ll_test_inode_by_fid(struct inode *inode, void *opaque)
200 return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
203 static int ll_dom_lock_cancel(struct inode *inode, struct ldlm_lock *lock)
206 struct ll_inode_info *lli = ll_i2info(inode);
211 env = cl_env_get(&refcheck);
213 RETURN(PTR_ERR(env));
215 /* reach MDC layer to flush data under the DoM ldlm lock */
216 rc = cl_object_flush(env, lli->lli_clob, lock);
217 if (rc == -ENODATA) {
218 CDEBUG(D_INODE, "inode "DFID" layout has no DoM stripe\n",
219 PFID(ll_inode2fid(inode)));
220 /* most likely result of layout change, do nothing */
224 cl_env_put(env, &refcheck);
228 static void ll_lock_cancel_bits(struct ldlm_lock *lock, __u64 to_cancel)
230 struct inode *inode = ll_inode_from_resource_lock(lock);
231 struct ll_inode_info *lli;
232 __u64 bits = to_cancel;
238 /* That means the inode is evicted most likely and may cause
239 * the skipping of lock cleanups below, so print the message
242 if (lock->l_resource->lr_lvb_inode)
244 "can't take inode for the lock (%sevicted)\n",
245 lock->l_resource->lr_lvb_inode->i_state &
246 I_FREEING ? "" : "not ");
250 if (!fid_res_name_eq(ll_inode2fid(inode),
251 &lock->l_resource->lr_name)) {
252 LDLM_ERROR(lock, "data mismatch with object "DFID"(%p)",
253 PFID(ll_inode2fid(inode)), inode);
257 if (bits & MDS_INODELOCK_XATTR) {
258 ll_xattr_cache_destroy(inode);
259 bits &= ~MDS_INODELOCK_XATTR;
262 /* For OPEN locks we differentiate between lock modes
263 * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
264 if (bits & MDS_INODELOCK_OPEN)
265 ll_have_md_lock(inode, &bits, lock->l_req_mode);
267 if (bits & MDS_INODELOCK_OPEN) {
270 switch (lock->l_req_mode) {
281 LDLM_ERROR(lock, "bad lock mode for OPEN lock");
285 ll_md_real_close(inode, fmode);
287 bits &= ~MDS_INODELOCK_OPEN;
290 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
291 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM |
293 ll_have_md_lock(inode, &bits, LCK_MINMODE);
295 if (bits & MDS_INODELOCK_DOM) {
296 rc = ll_dom_lock_cancel(inode, lock);
298 CDEBUG(D_INODE, "cannot flush DoM data "
300 PFID(ll_inode2fid(inode)), rc);
303 if (bits & MDS_INODELOCK_LAYOUT) {
304 struct cl_object_conf conf = {
305 .coc_opc = OBJECT_CONF_INVALIDATE,
309 rc = ll_layout_conf(inode, &conf);
311 CDEBUG(D_INODE, "cannot invalidate layout of "
313 PFID(ll_inode2fid(inode)), rc);
316 lli = ll_i2info(inode);
318 if (bits & MDS_INODELOCK_UPDATE)
319 set_bit(LLIF_UPDATE_ATIME, &lli->lli_flags);
321 if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
322 CDEBUG(D_INODE, "invalidating inode "DFID" lli = %p, "
323 "pfid = "DFID"\n", PFID(ll_inode2fid(inode)),
324 lli, PFID(&lli->lli_pfid));
325 truncate_inode_pages(inode->i_mapping, 0);
327 if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
328 struct inode *master_inode = NULL;
331 /* This is slave inode, since all of the child dentry
332 * is connected on the master inode, so we have to
333 * invalidate the negative children on master inode */
334 CDEBUG(D_INODE, "Invalidate s"DFID" m"DFID"\n",
335 PFID(ll_inode2fid(inode)), PFID(&lli->lli_pfid));
337 hash = cl_fid_build_ino(&lli->lli_pfid,
338 ll_need_32bit_api(ll_i2sbi(inode)));
340 /* Do not lookup the inode with ilookup5, otherwise
341 * it will cause dead lock,
342 * 1. Client1 send chmod req to the MDT0, then on MDT0,
343 * it enqueues master and all of its slaves lock,
344 * (mdt_attr_set() -> mdt_lock_slaves()), after gets
345 * master and stripe0 lock, it will send the enqueue
346 * req (for stripe1) to MDT1, then MDT1 finds the lock
347 * has been granted to client2. Then MDT1 sends blocking
349 * 2. At the same time, client2 tries to unlink
350 * the striped dir (rm -rf striped_dir), and during
351 * lookup, it will hold the master inode of the striped
352 * directory, whose inode state is NEW, then tries to
353 * revalidate all of its slaves, (ll_prep_inode()->
354 * ll_iget()->ll_read_inode2()-> ll_update_inode().).
355 * And it will be blocked on the server side because
357 * 3. Then the client get the blocking_ast req, cancel
358 * the lock, but being blocked if using ->ilookup5()),
359 * because master inode state is NEW. */
360 master_inode = ilookup5_nowait(inode->i_sb, hash,
361 ll_test_inode_by_fid,
362 (void *)&lli->lli_pfid);
364 ll_prune_negative_children(master_inode);
368 ll_prune_negative_children(inode);
372 if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
373 !is_root_inode(inode))
374 ll_prune_aliases(inode);
376 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM))
377 forget_all_cached_acls(inode);
383 /* Check if the given lock may be downgraded instead of canceling and
384 * that convert is really needed. */
385 int ll_md_need_convert(struct ldlm_lock *lock)
387 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
389 __u64 wanted = lock->l_policy_data.l_inodebits.cancel_bits;
390 __u64 bits = lock->l_policy_data.l_inodebits.bits & ~wanted;
391 enum ldlm_mode mode = LCK_MINMODE;
393 if (!lock->l_conn_export ||
394 !exp_connect_lock_convert(lock->l_conn_export))
397 if (!wanted || !bits || ldlm_is_cancel(lock))
400 /* do not convert locks other than DOM for now */
401 if (!((bits | wanted) & MDS_INODELOCK_DOM))
404 /* We may have already remaining bits in some other lock so
405 * lock convert will leave us just extra lock for the same bit.
406 * Check if client has other lock with the same bits and the same
407 * or lower mode and don't convert if any.
409 switch (lock->l_req_mode) {
423 /* do not convert other modes */
427 /* is lock is too old to be converted? */
428 lock_res_and_lock(lock);
429 if (ktime_after(ktime_get(),
430 ktime_add(lock->l_last_used, ns->ns_dirty_age_limit))) {
431 unlock_res_and_lock(lock);
434 unlock_res_and_lock(lock);
436 inode = ll_inode_from_resource_lock(lock);
437 ll_have_md_lock(inode, &bits, mode);
442 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *ld,
443 void *data, int flag)
445 struct lustre_handle lockh;
451 case LDLM_CB_BLOCKING:
453 __u64 cancel_flags = LCF_ASYNC;
455 /* if lock convert is not needed then still have to
456 * pass lock via ldlm_cli_convert() to keep all states
457 * correct, set cancel_bits to full lock bits to cause
458 * full cancel to happen.
460 if (!ll_md_need_convert(lock)) {
461 lock_res_and_lock(lock);
462 lock->l_policy_data.l_inodebits.cancel_bits =
463 lock->l_policy_data.l_inodebits.bits;
464 unlock_res_and_lock(lock);
466 rc = ldlm_cli_convert(lock, cancel_flags);
469 /* continue with cancel otherwise */
470 ldlm_lock2handle(lock, &lockh);
471 rc = ldlm_cli_cancel(&lockh, cancel_flags);
473 CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
478 case LDLM_CB_CANCELING:
480 __u64 to_cancel = lock->l_policy_data.l_inodebits.bits;
482 /* Nothing to do for non-granted locks */
483 if (!ldlm_is_granted(lock))
486 /* If 'ld' is supplied then bits to be cancelled are passed
487 * implicitly by lock converting and cancel_bits from 'ld'
488 * should be used. Otherwise full cancel is being performed
489 * and lock inodebits are used.
491 * Note: we cannot rely on cancel_bits in lock itself at this
492 * moment because they can be changed by concurrent thread,
493 * so ldlm_cli_inodebits_convert() pass cancel bits implicitly
497 /* partial bits cancel allowed only during convert */
498 LASSERT(ldlm_is_converting(lock));
499 /* mask cancel bits by lock bits so only no any unused
500 * bits are passed to ll_lock_cancel_bits()
502 to_cancel &= ld->l_policy_data.l_inodebits.cancel_bits;
504 ll_lock_cancel_bits(lock, to_cancel);
514 __u32 ll_i2suppgid(struct inode *i)
516 if (in_group_p(i->i_gid))
517 return (__u32)from_kgid(&init_user_ns, i->i_gid);
519 return (__u32) __kgid_val(INVALID_GID);
522 /* Pack the required supplementary groups into the supplied groups array.
523 * If we don't need to use the groups from the target inode(s) then we
524 * instead pack one or more groups from the user's supplementary group
525 * array in case it might be useful. Not needed if doing an MDS-side upcall. */
526 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
529 LASSERT(suppgids != NULL);
531 suppgids[0] = ll_i2suppgid(i1);
534 suppgids[1] = ll_i2suppgid(i2);
540 * try to reuse three types of dentry:
541 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
542 * by concurrent .revalidate).
543 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
544 * be cleared by others calling d_lustre_revalidate).
545 * 3. DISCONNECTED alias.
547 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
549 struct dentry *alias, *discon_alias, *invalid_alias;
551 if (hlist_empty(&inode->i_dentry))
554 discon_alias = invalid_alias = NULL;
556 spin_lock(&inode->i_lock);
557 hlist_for_each_entry(alias, &inode->i_dentry, d_alias) {
558 LASSERT(alias != dentry);
560 spin_lock(&alias->d_lock);
561 if ((alias->d_flags & DCACHE_DISCONNECTED) &&
562 S_ISDIR(inode->i_mode))
563 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
564 discon_alias = alias;
565 else if (alias->d_parent == dentry->d_parent &&
566 alias->d_name.hash == dentry->d_name.hash &&
567 alias->d_name.len == dentry->d_name.len &&
568 memcmp(alias->d_name.name, dentry->d_name.name,
569 dentry->d_name.len) == 0)
570 invalid_alias = alias;
571 spin_unlock(&alias->d_lock);
576 alias = invalid_alias ?: discon_alias ?: NULL;
578 spin_lock(&alias->d_lock);
580 spin_unlock(&alias->d_lock);
582 spin_unlock(&inode->i_lock);
588 * Similar to d_splice_alias(), but lustre treats invalid alias
589 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
591 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
597 new = ll_find_alias(inode, de);
607 "Reuse dentry %p inode %p refc %d flags %#x\n",
608 new, new->d_inode, ll_d_count(new), new->d_flags);
617 /* this needs only to be done for foreign symlink dirs as
618 * DCACHE_SYMLINK_TYPE is already set by d_flags_for_inode()
619 * kernel routine for files with symlink ops (ie, real symlink)
621 if (inode && S_ISDIR(inode->i_mode) &&
622 ll_sbi_has_foreign_symlink(ll_i2sbi(inode)) &&
623 #ifdef HAVE_IOP_GET_LINK
624 inode->i_op->get_link) {
626 inode->i_op->follow_link) {
628 CDEBUG(D_INFO, "%s: inode "DFID": faking foreign dir as a symlink\n",
629 ll_i2sbi(inode)->ll_fsname, PFID(ll_inode2fid(inode)));
630 spin_lock(&de->d_lock);
631 /* like d_flags_for_inode() already does for files */
632 de->d_flags = (de->d_flags & ~DCACHE_ENTRY_TYPE) |
634 spin_unlock(&de->d_lock);
637 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
638 de, de->d_inode, ll_d_count(de), de->d_flags);
642 static int ll_lookup_it_finish(struct ptlrpc_request *request,
643 struct lookup_intent *it,
644 struct inode *parent, struct dentry **de,
645 void *secctx, __u32 secctxlen,
646 void *encctx, __u32 encctxlen,
647 ktime_t kstart, bool encrypt)
649 struct inode *inode = NULL;
652 struct dentry *alias;
655 /* NB 1 request reference will be taken away by ll_intent_lock()
657 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
659 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
660 struct req_capsule *pill = &request->rq_pill;
661 struct mdt_body *body = req_capsule_server_get(pill,
664 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
668 /* If encryption context was returned by MDT, put it in
669 * inode now to save an extra getxattr and avoid deadlock.
671 if (body->mbo_valid & OBD_MD_ENCCTX) {
672 encctx = req_capsule_server_get(pill, &RMF_FILE_ENCCTX);
673 encctxlen = req_capsule_get_size(pill,
679 "server returned encryption ctx for "DFID"\n",
680 PFID(ll_inode2fid(inode)));
681 rc = ll_xattr_cache_insert(inode,
682 LL_XATTR_NAME_ENCRYPTION_CONTEXT,
685 CWARN("%s: cannot set enc ctx for "DFID": rc = %d\n",
686 ll_i2sbi(inode)->ll_fsname,
687 PFID(ll_inode2fid(inode)), rc);
689 rc = llcrypt_get_encryption_info(inode);
692 "cannot get enc info for "DFID": rc = %d\n",
693 PFID(ll_inode2fid(inode)), rc);
698 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
699 /* OPEN can return data if lock has DoM+LAYOUT bits set */
700 if (it->it_op & IT_OPEN &&
701 bits & MDS_INODELOCK_DOM && bits & MDS_INODELOCK_LAYOUT)
702 ll_dom_finish_open(inode, request);
704 /* We used to query real size from OSTs here, but actually
705 * this is not needed. For stat() calls size would be updated
706 * from subsequent do_revalidate()->ll_inode_revalidate_it() in
708 * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
709 * Everybody else who needs correct file size would call
710 * ll_glimpse_size or some equivalent themselves anyway.
714 /* If security context was returned by MDT, put it in
715 * inode now to save an extra getxattr from security hooks,
716 * and avoid deadlock.
718 if (body->mbo_valid & OBD_MD_SECCTX) {
719 secctx = req_capsule_server_get(pill, &RMF_FILE_SECCTX);
720 secctxlen = req_capsule_get_size(pill,
725 CDEBUG(D_SEC, "server returned security context"
727 PFID(ll_inode2fid(inode)));
730 if (secctx != NULL && secctxlen != 0) {
731 /* no need to protect selinux_inode_setsecurity() by
732 * inode_lock. Taking it would lead to a client deadlock
735 rc = security_inode_notifysecctx(inode, secctx,
738 CWARN("%s: cannot set security context for "DFID": rc = %d\n",
739 ll_i2sbi(inode)->ll_fsname,
740 PFID(ll_inode2fid(inode)),
745 /* Only hash *de if it is unhashed (new dentry).
746 * Atoimc_open may passin hashed dentries for open.
748 alias = ll_splice_alias(inode, *de);
750 GOTO(out, rc = PTR_ERR(alias));
754 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
755 /* we have lookup look - unhide dentry */
756 if (bits & MDS_INODELOCK_LOOKUP)
757 d_lustre_revalidate(*de);
760 rc = llcrypt_get_encryption_info(inode);
763 if (!llcrypt_has_encryption_key(inode))
764 GOTO(out, rc = -ENOKEY);
766 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
768 * If file was created on the server, the dentry is revalidated
769 * in ll_create_it if the lock allows for it.
771 /* Check that parent has UPDATE lock. */
772 struct lookup_intent parent_it = {
774 .it_lock_handle = 0 };
775 struct lu_fid fid = ll_i2info(parent)->lli_fid;
777 /* If it is striped directory, get the real stripe parent */
778 if (unlikely(ll_dir_striped(parent))) {
779 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
780 ll_i2info(parent)->lli_lsm_md,
782 (*de)->d_name.len, &fid);
787 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
789 d_lustre_revalidate(*de);
790 ll_intent_release(&parent_it);
794 if (it_disposition(it, DISP_OPEN_CREATE)) {
795 ll_stats_ops_tally(ll_i2sbi(parent), LPROC_LL_MKNOD,
796 ktime_us_delta(ktime_get(), kstart));
802 if (rc != 0 && it->it_op & IT_OPEN) {
803 ll_intent_drop_lock(it);
804 ll_open_cleanup((*de)->d_sb, request);
810 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
811 struct lookup_intent *it,
812 void **secctx, __u32 *secctxlen,
813 struct pcc_create_attach *pca,
815 void **encctx, __u32 *encctxlen)
817 ktime_t kstart = ktime_get();
818 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
819 struct dentry *save = dentry, *retval;
820 struct ptlrpc_request *req = NULL;
821 struct md_op_data *op_data = NULL;
822 struct lov_user_md *lum = NULL;
825 char secctx_name[XATTR_NAME_MAX + 1];
829 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
830 RETURN(ERR_PTR(-ENAMETOOLONG));
832 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), intent=%s\n",
833 dentry, PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
835 if (d_mountpoint(dentry))
836 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
838 if (it == NULL || it->it_op == IT_GETXATTR)
841 if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
842 rc = ll_revalidate_statahead(parent, &dentry, 0);
844 RETURN(dentry == save ? NULL : dentry);
847 if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE &&
848 dentry->d_sb->s_flags & SB_RDONLY)
849 RETURN(ERR_PTR(-EROFS));
851 if (it->it_op & IT_CREAT)
852 opc = LUSTRE_OPC_CREATE;
854 opc = LUSTRE_OPC_ANY;
856 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
857 dentry->d_name.len, 0, opc, NULL);
859 GOTO(out, retval = ERR_CAST(op_data));
861 /* enforce umask if acl disabled or MDS doesn't support umask */
862 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
863 it->it_create_mode &= ~current_umask();
865 if (it->it_op & IT_CREAT &&
866 ll_i2sbi(parent)->ll_flags & LL_SBI_FILE_SECCTX) {
867 rc = ll_dentry_init_security(dentry, it->it_create_mode,
869 &op_data->op_file_secctx_name,
870 &op_data->op_file_secctx,
871 &op_data->op_file_secctx_size);
873 GOTO(out, retval = ERR_PTR(rc));
875 *secctx = op_data->op_file_secctx;
876 if (secctxlen != NULL)
877 *secctxlen = op_data->op_file_secctx_size;
881 if (secctxlen != NULL)
884 if (it->it_op & IT_CREAT && encrypt) {
885 rc = llcrypt_inherit_context(parent, NULL, op_data, false);
887 GOTO(out, retval = ERR_PTR(rc));
889 *encctx = op_data->op_file_encctx;
890 if (encctxlen != NULL)
891 *encctxlen = op_data->op_file_encctx_size;
895 if (encctxlen != NULL)
899 /* ask for security context upon intent */
900 if (it->it_op & (IT_LOOKUP | IT_GETATTR | IT_OPEN)) {
901 /* get name of security xattr to request to server */
902 rc = ll_listsecurity(parent, secctx_name,
903 sizeof(secctx_name));
905 CDEBUG(D_SEC, "cannot get security xattr name for "
907 PFID(ll_inode2fid(parent)), rc);
909 op_data->op_file_secctx_name = secctx_name;
910 op_data->op_file_secctx_name_size = rc;
911 CDEBUG(D_SEC, "'%.*s' is security xattr for "DFID"\n",
912 rc, secctx_name, PFID(ll_inode2fid(parent)));
916 if (pca && pca->pca_dataset) {
917 struct pcc_dataset *dataset = pca->pca_dataset;
921 GOTO(out, retval = ERR_PTR(-ENOMEM));
923 lum->lmm_magic = LOV_USER_MAGIC_V1;
924 lum->lmm_pattern = LOV_PATTERN_F_RELEASED | LOV_PATTERN_RAID0;
925 op_data->op_data = lum;
926 op_data->op_data_size = sizeof(*lum);
927 op_data->op_archive_id = dataset->pccd_rwid;
929 rc = obd_fid_alloc(NULL, ll_i2mdexp(parent), &op_data->op_fid2,
932 GOTO(out, retval = ERR_PTR(rc));
934 rc = pcc_inode_create(parent->i_sb, dataset, &op_data->op_fid2,
937 GOTO(out, retval = ERR_PTR(rc));
939 it->it_flags |= MDS_OPEN_PCC;
942 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
943 &ll_md_blocking_ast, 0);
944 /* If the MDS allows the client to chgrp (CFS_SETGRP_PERM), but the
945 * client does not know which suppgid should be sent to the MDS, or
946 * some other(s) changed the target file's GID after this RPC sent
947 * to the MDS with the suppgid as the original GID, then we should
948 * try again with right suppgid. */
949 if (rc == -EACCES && it->it_op & IT_OPEN &&
950 it_disposition(it, DISP_OPEN_DENY)) {
951 struct mdt_body *body;
953 LASSERT(req != NULL);
955 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
956 if (op_data->op_suppgids[0] == body->mbo_gid ||
957 op_data->op_suppgids[1] == body->mbo_gid ||
958 !in_group_p(make_kgid(&init_user_ns, body->mbo_gid)))
959 GOTO(out, retval = ERR_PTR(-EACCES));
961 fid_zero(&op_data->op_fid2);
962 op_data->op_suppgids[1] = body->mbo_gid;
963 ptlrpc_req_finished(req);
965 ll_intent_release(it);
966 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
967 &ll_md_blocking_ast, 0);
971 GOTO(out, retval = ERR_PTR(rc));
973 /* dir layout may change */
974 ll_unlock_md_op_lsm(op_data);
975 rc = ll_lookup_it_finish(req, it, parent, &dentry,
976 secctx != NULL ? *secctx : NULL,
977 secctxlen != NULL ? *secctxlen : 0,
978 encctx != NULL ? *encctx : NULL,
979 encctxlen != NULL ? *encctxlen : 0,
982 ll_intent_release(it);
983 GOTO(out, retval = ERR_PTR(rc));
986 if ((it->it_op & IT_OPEN) && dentry->d_inode &&
987 !S_ISREG(dentry->d_inode->i_mode) &&
988 !S_ISDIR(dentry->d_inode->i_mode)) {
989 ll_release_openhandle(dentry, it);
991 ll_lookup_finish_locks(it, dentry);
993 GOTO(out, retval = (dentry == save) ? NULL : dentry);
996 if (op_data != NULL && !IS_ERR(op_data)) {
997 if (secctx != NULL && secctxlen != NULL) {
998 /* caller needs sec ctx info, so reset it in op_data to
999 * prevent it from being freed */
1000 op_data->op_file_secctx = NULL;
1001 op_data->op_file_secctx_size = 0;
1003 if (encctx != NULL && encctxlen != NULL &&
1004 it->it_op & IT_CREAT && encrypt) {
1005 /* caller needs enc ctx info, so reset it in op_data to
1006 * prevent it from being freed
1008 op_data->op_file_encctx = NULL;
1009 op_data->op_file_encctx_size = 0;
1011 ll_finish_md_op_data(op_data);
1017 ptlrpc_req_finished(req);
1021 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
1024 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
1027 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), flags=%u\n",
1028 dentry, PFID(ll_inode2fid(parent)), parent, flags);
1031 * Optimize away (CREATE && !OPEN). Let .create handle the race.
1032 * but only if we have write permissions there, otherwise we need
1033 * to proceed with lookup. LU-4185
1035 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
1036 (inode_permission(parent, MAY_WRITE | MAY_EXEC) == 0))
1039 if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
1043 de = ll_lookup_it(parent, dentry, itp, NULL, NULL, NULL, false,
1047 ll_intent_release(itp);
1052 #ifdef FMODE_CREATED /* added in Linux v4.18-rc1-20-g73a09dd */
1053 # define ll_is_opened(o, f) ((f)->f_mode & FMODE_OPENED)
1054 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL)
1055 # define ll_last_arg
1056 # define ll_set_created(o, f) \
1058 (f)->f_mode |= FMODE_CREATED; \
1062 # define ll_is_opened(o, f) (*(o))
1063 # define ll_finish_open(f, d, o) finish_open((f), (d), NULL, (o))
1064 # define ll_last_arg , int *opened
1065 # define ll_set_created(o, f) \
1067 *(o) |= FILE_CREATED; \
1073 * For cached negative dentry and new dentry, handle lookup/create/open
1076 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
1077 struct file *file, unsigned open_flags,
1078 umode_t mode ll_last_arg)
1080 struct lookup_intent *it;
1082 long long lookup_flags = LOOKUP_OPEN;
1083 void *secctx = NULL;
1084 __u32 secctxlen = 0;
1085 void *encctx = NULL;
1086 __u32 encctxlen = 0;
1087 struct ll_sb_info *sbi = NULL;
1088 struct pcc_create_attach pca = { NULL, NULL };
1089 bool encrypt = false;
1094 "VFS Op:name=%pd, dir="DFID"(%p), file %p, open_flags %x, mode %x opened %d\n",
1095 dentry, PFID(ll_inode2fid(dir)), dir, file, open_flags, mode,
1096 ll_is_opened(opened, file));
1098 /* Only negative dentries enter here */
1099 LASSERT(dentry->d_inode == NULL);
1101 if (!d_unhashed(dentry)) {
1102 /* A valid negative dentry that just passed revalidation,
1103 * there's little point to try and open it server-side,
1104 * even though there's a minuscule chance it might succeed.
1105 * Either way it's a valid race to just return -ENOENT here.
1107 if (!(open_flags & O_CREAT))
1110 /* Otherwise we just unhash it to be rehashed afresh via
1111 * lookup if necessary
1116 OBD_ALLOC(it, sizeof(*it));
1120 it->it_op = IT_OPEN;
1121 if (open_flags & O_CREAT) {
1122 it->it_op |= IT_CREAT;
1123 lookup_flags |= LOOKUP_CREATE;
1124 sbi = ll_i2sbi(dir);
1125 /* Volatile file is used for HSM restore, so do not use PCC */
1126 if (!filename_is_volatile(dentry->d_name.name,
1127 dentry->d_name.len, NULL)) {
1128 struct pcc_matcher item;
1129 struct pcc_dataset *dataset;
1131 item.pm_uid = from_kuid(&init_user_ns, current_uid());
1132 item.pm_gid = from_kgid(&init_user_ns, current_gid());
1133 item.pm_projid = ll_i2info(dir)->lli_projid;
1134 item.pm_name = &dentry->d_name;
1135 dataset = pcc_dataset_match_get(&sbi->ll_pcc_super,
1137 pca.pca_dataset = dataset;
1140 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
1141 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
1142 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1144 if (ll_sbi_has_encrypt(ll_i2sbi(dir)) && IS_ENCRYPTED(dir)) {
1145 /* in case of create, this is going to be a regular file because
1146 * we set S_IFREG bit on it->it_create_mode above
1148 rc = llcrypt_get_encryption_info(dir);
1150 GOTO(out_release, rc);
1151 if (open_flags & O_CREAT) {
1152 if (!llcrypt_has_encryption_key(dir))
1153 GOTO(out_release, rc = -ENOKEY);
1158 OBD_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE2, cfs_fail_val);
1160 /* Dentry added to dcache tree in ll_lookup_it */
1161 de = ll_lookup_it(dir, dentry, it, &secctx, &secctxlen, &pca, encrypt,
1162 &encctx, &encctxlen);
1165 else if (de != NULL)
1168 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1171 if (it_disposition(it, DISP_OPEN_CREATE)) {
1172 /* Dentry instantiated in ll_create_it. */
1173 rc = ll_create_it(dir, dentry, it, secctx, secctxlen,
1174 encrypt, encctx, encctxlen);
1175 security_release_secctx(secctx, secctxlen);
1176 llcrypt_free_ctx(encctx, encctxlen);
1178 /* We dget in ll_splice_alias. */
1184 rc = pcc_inode_create_fini(dentry->d_inode, &pca);
1188 GOTO(out_release, rc);
1191 ll_set_created(opened, file);
1193 /* Open the file with O_CREAT, but the file already
1194 * existed on MDT. This may happend in the case that
1195 * the LOOKUP ibits lock is revoked and the
1196 * corresponding dentry cache is deleted.
1197 * i.e. In the current Lustre, the truncate operation
1198 * will revoke the LOOKUP ibits lock, and the file
1199 * dentry cache will be invalidated. The following open
1200 * with O_CREAT flag will call into ->atomic_open, the
1201 * file was wrongly though as newly created file and
1202 * try to auto cache the file. So after client knows it
1203 * is not a DISP_OPEN_CREATE, it should cleanup the
1204 * already created PCC copy.
1206 pcc_create_attach_cleanup(dir->i_sb, &pca);
1208 if (open_flags & O_CREAT && encrypt &&
1210 rc = ll_set_encflags(dentry->d_inode, encctx,
1212 llcrypt_free_ctx(encctx, encctxlen);
1214 GOTO(out_release, rc);
1218 /* check also if a foreign file is openable */
1219 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN) &&
1220 ll_foreign_is_openable(dentry, open_flags)) {
1222 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1223 /* We cannot call open here as it might
1224 * deadlock. This case is unreachable in
1225 * practice because of OBD_CONNECT_NODEVOH. */
1226 rc = finish_no_open(file, de);
1228 file->private_data = it;
1229 rc = ll_finish_open(file, dentry, opened);
1230 /* We dget in ll_splice_alias. finish_open takes
1231 * care of dget for fd open.
1237 rc = finish_no_open(file, de);
1240 pcc_create_attach_cleanup(dir->i_sb, &pca);
1244 ll_intent_release(it);
1245 OBD_FREE(it, sizeof(*it));
1250 /* We depend on "mode" being set with the proper file type/umask by now */
1251 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
1253 struct inode *inode = NULL;
1254 struct ptlrpc_request *request = NULL;
1255 struct ll_sb_info *sbi = ll_i2sbi(dir);
1259 LASSERT(it && it->it_disposition);
1261 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
1262 request = it->it_request;
1263 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
1264 rc = ll_prep_inode(&inode, request, dir->i_sb, it);
1266 GOTO(out, inode = ERR_PTR(rc));
1268 /* Pause to allow for a race with concurrent access by fid */
1269 OBD_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_NODE_PAUSE, cfs_fail_val);
1271 /* We asked for a lock on the directory, but were granted a
1272 * lock on the inode. Since we finally have an inode pointer,
1273 * stuff it in the lock. */
1274 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
1275 PFID(ll_inode2fid(inode)), inode);
1276 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
1279 ptlrpc_req_finished(request);
1284 * By the time this is called, we already have created the directory cache
1285 * entry for the new file, but it is so far negative - it has no inode.
1287 * We defer creating the OBD object(s) until open, to keep the intent and
1288 * non-intent code paths similar, and also because we do not have the MDS
1289 * inode number before calling ll_create_node() (which is needed for LOV),
1290 * so we would need to do yet another RPC to the MDS to store the LOV EA
1291 * data on the MDS. If needed, we would pass the PACKED lmm as data and
1292 * lmm_size in datalen (the MDS still has code which will handle that).
1294 * If the create succeeds, we fill in the inode information
1295 * with d_instantiate().
1297 static int ll_create_it(struct inode *dir, struct dentry *dentry,
1298 struct lookup_intent *it,
1299 void *secctx, __u32 secctxlen, bool encrypt,
1300 void *encctx, __u32 encctxlen)
1302 struct inode *inode;
1307 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), intent=%s\n",
1308 dentry, PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
1310 rc = it_open_error(DISP_OPEN_CREATE, it);
1314 inode = ll_create_node(dir, it);
1316 RETURN(PTR_ERR(inode));
1318 if ((ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX) &&
1320 /* must be done before d_instantiate, because it calls
1321 * security_d_instantiate, which means a getxattr if security
1322 * context is not set yet */
1323 /* no need to protect selinux_inode_setsecurity() by
1324 * inode_lock. Taking it would lead to a client deadlock
1327 rc = security_inode_notifysecctx(inode, secctx, secctxlen);
1332 d_instantiate(dentry, inode);
1335 rc = ll_set_encflags(inode, encctx, encctxlen, true);
1340 if (!(ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX)) {
1341 rc = ll_inode_init_security(dentry, inode, dir);
1346 ll_set_lock_data(ll_i2sbi(dir)->ll_md_exp, inode, it, &bits);
1347 if (bits & MDS_INODELOCK_LOOKUP)
1348 d_lustre_revalidate(dentry);
1353 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
1355 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
1359 if (body->mbo_valid & OBD_MD_FLMTIME &&
1360 body->mbo_mtime > inode->i_mtime.tv_sec) {
1362 "setting fid " DFID " mtime from %lld to %llu\n",
1363 PFID(ll_inode2fid(inode)),
1364 (s64)inode->i_mtime.tv_sec, body->mbo_mtime);
1365 inode->i_mtime.tv_sec = body->mbo_mtime;
1368 if (body->mbo_valid & OBD_MD_FLCTIME &&
1369 body->mbo_ctime > inode->i_ctime.tv_sec)
1370 inode->i_ctime.tv_sec = body->mbo_ctime;
1373 static int ll_new_node(struct inode *dir, struct dentry *dchild,
1374 const char *tgt, umode_t mode, int rdev, __u32 opc)
1376 struct qstr *name = &dchild->d_name;
1377 struct ptlrpc_request *request = NULL;
1378 struct md_op_data *op_data = NULL;
1379 struct inode *inode = NULL;
1380 struct ll_sb_info *sbi = ll_i2sbi(dir);
1382 bool encrypt = false;
1386 if (unlikely(tgt != NULL))
1387 tgt_len = strlen(tgt) + 1;
1390 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1391 name->len, 0, opc, NULL);
1392 if (IS_ERR(op_data))
1393 GOTO(err_exit, err = PTR_ERR(op_data));
1395 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1396 err = ll_dentry_init_security(dchild, mode, &dchild->d_name,
1397 &op_data->op_file_secctx_name,
1398 &op_data->op_file_secctx,
1399 &op_data->op_file_secctx_size);
1401 GOTO(err_exit, err);
1404 if (ll_sbi_has_encrypt(sbi) &&
1405 ((IS_ENCRYPTED(dir) &&
1406 (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) ||
1407 (unlikely(llcrypt_dummy_context_enabled(dir)) && S_ISDIR(mode)))) {
1408 err = llcrypt_get_encryption_info(dir);
1410 GOTO(err_exit, err);
1411 if (!llcrypt_has_encryption_key(dir))
1412 GOTO(err_exit, err = -ENOKEY);
1417 err = llcrypt_inherit_context(dir, NULL, op_data, false);
1419 GOTO(err_exit, err);
1422 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
1423 from_kuid(&init_user_ns, current_fsuid()),
1424 from_kgid(&init_user_ns, current_fsgid()),
1425 cfs_curproc_cap_pack(), rdev, &request);
1426 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 58, 0)
1428 * server < 2.12.58 doesn't pack default LMV in intent_getattr reply,
1429 * fetch default LMV here.
1431 if (unlikely(err == -EREMOTE)) {
1432 struct ll_inode_info *lli = ll_i2info(dir);
1433 struct lmv_user_md *lum;
1437 ptlrpc_req_finished(request);
1440 err2 = ll_dir_getstripe(dir, (void **)&lum, &lumsize, &request,
1441 OBD_MD_DEFAULT_MEA);
1442 ll_finish_md_op_data(op_data);
1445 struct lustre_md md = { NULL };
1447 md.body = req_capsule_server_get(&request->rq_pill,
1450 GOTO(err_exit, err = -EPROTO);
1452 OBD_ALLOC_PTR(md.default_lmv);
1453 if (!md.default_lmv)
1454 GOTO(err_exit, err = -ENOMEM);
1456 md.default_lmv->lsm_md_magic = lum->lum_magic;
1457 md.default_lmv->lsm_md_stripe_count =
1458 lum->lum_stripe_count;
1459 md.default_lmv->lsm_md_master_mdt_index =
1460 lum->lum_stripe_offset;
1461 md.default_lmv->lsm_md_hash_type = lum->lum_hash_type;
1463 err = ll_update_inode(dir, &md);
1464 md_free_lustre_md(sbi->ll_md_exp, &md);
1466 GOTO(err_exit, err);
1467 } else if (err2 == -ENODATA && lli->lli_default_lsm_md) {
1469 * If there are no default stripe EA on the MDT, but the
1470 * client has default stripe, then it probably means
1471 * default stripe EA has just been deleted.
1473 down_write(&lli->lli_lsm_sem);
1474 if (lli->lli_default_lsm_md)
1475 OBD_FREE_PTR(lli->lli_default_lsm_md);
1476 lli->lli_default_lsm_md = NULL;
1477 up_write(&lli->lli_lsm_sem);
1479 GOTO(err_exit, err);
1482 ptlrpc_req_finished(request);
1489 GOTO(err_exit, err);
1491 ll_update_times(request, dir);
1493 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_NEWNODE_PAUSE, cfs_fail_val);
1495 err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
1497 GOTO(err_exit, err);
1499 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1500 /* must be done before d_instantiate, because it calls
1501 * security_d_instantiate, which means a getxattr if security
1502 * context is not set yet */
1503 /* no need to protect selinux_inode_setsecurity() by
1504 * inode_lock. Taking it would lead to a client deadlock
1507 err = security_inode_notifysecctx(inode,
1508 op_data->op_file_secctx,
1509 op_data->op_file_secctx_size);
1511 GOTO(err_exit, err);
1514 d_instantiate(dchild, inode);
1517 err = ll_set_encflags(inode, op_data->op_file_encctx,
1518 op_data->op_file_encctx_size, true);
1520 GOTO(err_exit, err);
1523 if (!(sbi->ll_flags & LL_SBI_FILE_SECCTX)) {
1524 err = ll_inode_init_security(dchild, inode, dir);
1526 GOTO(err_exit, err);
1531 if (request != NULL)
1532 ptlrpc_req_finished(request);
1534 if (!IS_ERR_OR_NULL(op_data))
1535 ll_finish_md_op_data(op_data);
1540 static int ll_mknod(struct inode *dir, struct dentry *dchild, umode_t mode,
1543 ktime_t kstart = ktime_get();
1547 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p) mode %o dev %x\n",
1548 dchild, PFID(ll_inode2fid(dir)), dir, mode, rdev);
1550 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1551 mode &= ~current_umask();
1553 switch (mode & S_IFMT) {
1562 err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
1573 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD,
1574 ktime_us_delta(ktime_get(), kstart));
1580 * Plain create. Intent create is handled in atomic_open.
1582 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1583 umode_t mode, bool want_excl)
1585 ktime_t kstart = ktime_get();
1588 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1591 "VFS Op:name=%pd, dir="DFID"(%p), flags=%u, excl=%d\n",
1592 dentry, PFID(ll_inode2fid(dir)), dir, mode, want_excl);
1594 /* Using mknod(2) to create a regular file is designed to not recognize
1595 * volatile file name, so we use ll_mknod() here. */
1596 rc = ll_mknod(dir, dentry, mode, 0);
1598 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, unhashed %d\n",
1599 dentry, d_unhashed(dentry));
1602 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE,
1603 ktime_us_delta(ktime_get(), kstart));
1608 static int ll_symlink(struct inode *dir, struct dentry *dchild,
1609 const char *oldpath)
1611 ktime_t kstart = ktime_get();
1615 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), target=%.*s\n",
1616 dchild, PFID(ll_inode2fid(dir)), dir, 3000, oldpath);
1618 err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO, 0,
1619 LUSTRE_OPC_SYMLINK);
1622 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK,
1623 ktime_us_delta(ktime_get(), kstart));
1628 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1629 struct dentry *new_dentry)
1631 struct inode *src = old_dentry->d_inode;
1632 struct qstr *name = &new_dentry->d_name;
1633 struct ll_sb_info *sbi = ll_i2sbi(dir);
1634 struct ptlrpc_request *request = NULL;
1635 struct md_op_data *op_data;
1636 ktime_t kstart = ktime_get();
1641 "VFS Op: inode="DFID"(%p), dir="DFID"(%p), target=%pd\n",
1642 PFID(ll_inode2fid(src)), src,
1643 PFID(ll_inode2fid(dir)), dir, new_dentry);
1645 err = llcrypt_prepare_link(old_dentry, dir, new_dentry);
1649 op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
1650 0, LUSTRE_OPC_ANY, NULL);
1651 if (IS_ERR(op_data))
1652 RETURN(PTR_ERR(op_data));
1654 err = md_link(sbi->ll_md_exp, op_data, &request);
1655 ll_finish_md_op_data(op_data);
1659 ll_update_times(request, dir);
1660 ll_stats_ops_tally(sbi, LPROC_LL_LINK,
1661 ktime_us_delta(ktime_get(), kstart));
1664 ptlrpc_req_finished(request);
1668 static int ll_mkdir(struct inode *dir, struct dentry *dchild, umode_t mode)
1670 ktime_t kstart = ktime_get();
1674 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p)\n",
1675 dchild, PFID(ll_inode2fid(dir)), dir);
1677 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1678 mode &= ~current_umask();
1680 mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
1682 err = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1684 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR,
1685 ktime_us_delta(ktime_get(), kstart));
1690 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1692 struct qstr *name = &dchild->d_name;
1693 struct ptlrpc_request *request = NULL;
1694 struct md_op_data *op_data;
1695 ktime_t kstart = ktime_get();
1700 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p)\n",
1701 dchild, PFID(ll_inode2fid(dir)), dir);
1703 if (unlikely(d_mountpoint(dchild)))
1706 /* some foreign dir may not be allowed to be removed */
1707 if (!ll_foreign_is_removable(dchild, false))
1710 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1711 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1712 if (IS_ERR(op_data))
1713 RETURN(PTR_ERR(op_data));
1715 if (dchild->d_inode != NULL)
1716 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1718 op_data->op_fid2 = op_data->op_fid3;
1719 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1720 ll_finish_md_op_data(op_data);
1722 struct mdt_body *body;
1724 ll_update_times(request, dir);
1725 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1726 ktime_us_delta(ktime_get(), kstart));
1729 * The server puts attributes in on the last unlink, use them
1730 * to update the link count so the inode can be freed
1733 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1734 if (body->mbo_valid & OBD_MD_FLNLINK)
1735 set_nlink(dchild->d_inode, body->mbo_nlink);
1738 ptlrpc_req_finished(request);
1746 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
1748 struct ptlrpc_request *request = NULL;
1749 struct md_op_data *op_data;
1750 ktime_t kstart = ktime_get();
1754 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1755 namelen, name, PFID(ll_inode2fid(dir)), dir);
1757 op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
1758 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1759 if (IS_ERR(op_data))
1760 RETURN(PTR_ERR(op_data));
1761 op_data->op_cli_flags |= CLI_RM_ENTRY;
1762 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1763 ll_finish_md_op_data(op_data);
1765 ll_update_times(request, dir);
1767 ptlrpc_req_finished(request);
1769 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR,
1770 ktime_us_delta(ktime_get(), kstart));
1774 static int ll_unlink(struct inode *dir, struct dentry *dchild)
1776 struct qstr *name = &dchild->d_name;
1777 struct ptlrpc_request *request = NULL;
1778 struct md_op_data *op_data;
1779 struct mdt_body *body;
1780 ktime_t kstart = ktime_get();
1785 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p)\n",
1786 dchild, PFID(ll_inode2fid(dir)), dir);
1789 * XXX: unlink bind mountpoint maybe call to here,
1790 * just check it as vfs_unlink does.
1792 if (unlikely(d_mountpoint(dchild)))
1795 /* some foreign file/dir may not be allowed to be unlinked */
1796 if (!ll_foreign_is_removable(dchild, false))
1799 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
1800 LUSTRE_OPC_ANY, NULL);
1801 if (IS_ERR(op_data))
1802 RETURN(PTR_ERR(op_data));
1804 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1805 /* notify lower layer if inode has dirty pages */
1806 if (S_ISREG(dchild->d_inode->i_mode) &&
1807 ll_i2info(dchild->d_inode)->lli_clob &&
1808 dirty_cnt(dchild->d_inode))
1809 op_data->op_cli_flags |= CLI_DIRTY_DATA;
1810 op_data->op_fid2 = op_data->op_fid3;
1811 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1812 ll_finish_md_op_data(op_data);
1817 * The server puts attributes in on the last unlink, use them to update
1818 * the link count so the inode can be freed immediately.
1820 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1821 if (body->mbo_valid & OBD_MD_FLNLINK)
1822 set_nlink(dchild->d_inode, body->mbo_nlink);
1824 ll_update_times(request, dir);
1827 ptlrpc_req_finished(request);
1829 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK,
1830 ktime_us_delta(ktime_get(), kstart));
1834 static int ll_rename(struct inode *src, struct dentry *src_dchild,
1835 struct inode *tgt, struct dentry *tgt_dchild
1836 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1837 , unsigned int flags
1841 struct qstr *src_name = &src_dchild->d_name;
1842 struct qstr *tgt_name = &tgt_dchild->d_name;
1843 struct ptlrpc_request *request = NULL;
1844 struct ll_sb_info *sbi = ll_i2sbi(src);
1845 struct md_op_data *op_data;
1846 ktime_t kstart = ktime_get();
1851 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1857 "VFS Op:oldname=%pd, src_dir="DFID"(%p), newname=%pd, tgt_dir="DFID"(%p)\n",
1858 src_dchild, PFID(ll_inode2fid(src)), src,
1859 tgt_dchild, PFID(ll_inode2fid(tgt)), tgt);
1861 if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
1864 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1865 err = llcrypt_prepare_rename(src, src_dchild, tgt, tgt_dchild, flags);
1867 err = llcrypt_prepare_rename(src, src_dchild, tgt, tgt_dchild, 0);
1872 if (src_dchild->d_inode)
1873 mode = src_dchild->d_inode->i_mode;
1875 if (tgt_dchild->d_inode)
1876 mode = tgt_dchild->d_inode->i_mode;
1878 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, mode,
1879 LUSTRE_OPC_ANY, NULL);
1880 if (IS_ERR(op_data))
1881 RETURN(PTR_ERR(op_data));
1883 if (src_dchild->d_inode)
1884 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1886 if (tgt_dchild->d_inode)
1887 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1889 err = md_rename(sbi->ll_md_exp, op_data,
1890 src_name->name, src_name->len,
1891 tgt_name->name, tgt_name->len, &request);
1892 ll_finish_md_op_data(op_data);
1894 ll_update_times(request, src);
1895 ll_update_times(request, tgt);
1898 ptlrpc_req_finished(request);
1901 d_move(src_dchild, tgt_dchild);
1902 ll_stats_ops_tally(sbi, LPROC_LL_RENAME,
1903 ktime_us_delta(ktime_get(), kstart));
1909 const struct inode_operations ll_dir_inode_operations = {
1911 .atomic_open = ll_atomic_open,
1912 .lookup = ll_lookup_nd,
1913 .create = ll_create_nd,
1914 /* We need all these non-raw things for NFSD, to not patch it. */
1915 .unlink = ll_unlink,
1918 .symlink = ll_symlink,
1920 .rename = ll_rename,
1921 .setattr = ll_setattr,
1922 .getattr = ll_getattr,
1923 .permission = ll_inode_permission,
1924 #ifdef HAVE_IOP_XATTR
1925 .setxattr = ll_setxattr,
1926 .getxattr = ll_getxattr,
1927 .removexattr = ll_removexattr,
1929 .listxattr = ll_listxattr,
1930 .get_acl = ll_get_acl,
1931 #ifdef HAVE_IOP_SET_ACL
1932 .set_acl = ll_set_acl,
1936 const struct inode_operations ll_special_inode_operations = {
1937 .setattr = ll_setattr,
1938 .getattr = ll_getattr,
1939 .permission = ll_inode_permission,
1940 #ifdef HAVE_IOP_XATTR
1941 .setxattr = ll_setxattr,
1942 .getxattr = ll_getxattr,
1943 .removexattr = ll_removexattr,
1945 .listxattr = ll_listxattr,
1946 .get_acl = ll_get_acl,
1947 #ifdef HAVE_IOP_SET_ACL
1948 .set_acl = ll_set_acl,