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 #ifdef HAVE_UIDGID_HEADER
42 # include <linux/uidgid.h>
45 #define DEBUG_SUBSYSTEM S_LLITE
47 #include <obd_support.h>
48 #include <lustre_fid.h>
49 #include <lustre_dlm.h>
50 #include "llite_internal.h"
52 static int ll_create_it(struct inode *dir, struct dentry *dentry,
53 struct lookup_intent *it,
54 void *secctx, __u32 secctxlen);
56 /* called from iget5_locked->find_inode() under inode_lock spinlock */
57 static int ll_test_inode(struct inode *inode, void *opaque)
59 struct ll_inode_info *lli = ll_i2info(inode);
60 struct lustre_md *md = opaque;
62 if (unlikely(!(md->body->mbo_valid & OBD_MD_FLID))) {
63 CERROR("MDS body missing FID\n");
67 if (!lu_fid_eq(&lli->lli_fid, &md->body->mbo_fid1))
73 static int ll_set_inode(struct inode *inode, void *opaque)
75 struct ll_inode_info *lli = ll_i2info(inode);
76 struct mdt_body *body = ((struct lustre_md *)opaque)->body;
78 if (unlikely(!(body->mbo_valid & OBD_MD_FLID))) {
79 CERROR("MDS body missing FID\n");
83 lli->lli_fid = body->mbo_fid1;
84 if (unlikely(!(body->mbo_valid & OBD_MD_FLTYPE))) {
85 CERROR("Can not initialize inode "DFID" without object type: "
87 PFID(&lli->lli_fid), body->mbo_valid);
91 inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mbo_mode & S_IFMT);
92 if (unlikely(inode->i_mode == 0)) {
93 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
104 * Get an inode by inode number(@hash), which is already instantiated by
105 * the intent lookup).
107 struct inode *ll_iget(struct super_block *sb, ino_t hash,
108 struct lustre_md *md)
116 inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
118 RETURN(ERR_PTR(-ENOMEM));
120 if (inode->i_state & I_NEW) {
121 rc = ll_read_inode2(inode, md);
122 if (rc == 0 && S_ISREG(inode->i_mode) &&
123 ll_i2info(inode)->lli_clob == NULL)
124 rc = cl_file_inode_init(inode, md);
127 /* Let's clear directory lsm here, otherwise
128 * make_bad_inode() will reset the inode mode
129 * to regular, then ll_clear_inode will not
130 * be able to clear lsm_md */
131 if (S_ISDIR(inode->i_mode))
132 ll_dir_clear_lsm_md(inode);
133 make_bad_inode(inode);
134 unlock_new_inode(inode);
138 inode_has_no_xattr(inode);
139 unlock_new_inode(inode);
141 } else if (is_bad_inode(inode)) {
143 inode = ERR_PTR(-ESTALE);
144 } else if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
145 rc = ll_update_inode(inode, md);
146 CDEBUG(D_VFSTRACE, "got inode: "DFID"(%p): rc = %d\n",
147 PFID(&md->body->mbo_fid1), inode, rc);
149 if (S_ISDIR(inode->i_mode))
150 ll_dir_clear_lsm_md(inode);
159 static void ll_invalidate_negative_children(struct inode *dir)
161 struct dentry *dentry, *tmp_subdir;
162 DECLARE_LL_D_HLIST_NODE_PTR(p);
165 ll_d_hlist_for_each_entry(dentry, p, &dir->i_dentry) {
166 spin_lock(&dentry->d_lock);
167 if (!list_empty(&dentry->d_subdirs)) {
168 struct dentry *child;
170 list_for_each_entry_safe(child, tmp_subdir,
173 if (child->d_inode == NULL)
174 d_lustre_invalidate(child, 1);
177 spin_unlock(&dentry->d_lock);
179 ll_unlock_dcache(dir);
182 int ll_test_inode_by_fid(struct inode *inode, void *opaque)
184 return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
187 int ll_dom_lock_cancel(struct inode *inode, struct ldlm_lock *lock)
190 struct ll_inode_info *lli = ll_i2info(inode);
191 struct cl_layout clt = { .cl_layout_gen = 0, };
198 if (!lli->lli_clob) {
199 /* due to DoM read on open, there may exist pages for Lustre
200 * regular file even though cl_object is not set up yet. */
201 truncate_inode_pages(inode->i_mapping, 0);
205 env = cl_env_get(&refcheck);
207 RETURN(PTR_ERR(env));
209 rc = cl_object_layout_get(env, lli->lli_clob, &clt);
211 CDEBUG(D_INODE, "Cannot get layout for "DFID"\n",
212 PFID(ll_inode2fid(inode)));
214 } else if (clt.cl_size == 0 || clt.cl_dom_comp_size == 0) {
215 CDEBUG(D_INODE, "DOM lock without DOM layout for "DFID"\n",
216 PFID(ll_inode2fid(inode)));
218 enum cl_fsync_mode mode;
219 loff_t end = clt.cl_dom_comp_size - 1;
221 mode = ldlm_is_discard_data(lock) ?
222 CL_FSYNC_DISCARD : CL_FSYNC_LOCAL;
223 rc = cl_sync_file_range(inode, 0, end, mode, 1);
224 truncate_inode_pages_range(inode->i_mapping, 0, end);
226 cl_env_put(env, &refcheck);
230 void ll_lock_cancel_bits(struct ldlm_lock *lock, __u64 to_cancel)
232 struct inode *inode = ll_inode_from_resource_lock(lock);
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 if (S_ISDIR(inode->i_mode))
260 ll_i2info(inode)->lli_def_stripe_offset = -1;
261 ll_xattr_cache_destroy(inode);
262 bits &= ~MDS_INODELOCK_XATTR;
265 /* For OPEN locks we differentiate between lock modes
266 * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
267 if (bits & MDS_INODELOCK_OPEN)
268 ll_have_md_lock(inode, &bits, lock->l_req_mode);
270 if (bits & MDS_INODELOCK_OPEN) {
273 switch (lock->l_req_mode) {
284 LDLM_ERROR(lock, "bad lock mode for OPEN lock");
288 ll_md_real_close(inode, fmode);
290 bits &= ~MDS_INODELOCK_OPEN;
293 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
294 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM |
296 ll_have_md_lock(inode, &bits, LCK_MINMODE);
298 if (bits & MDS_INODELOCK_DOM) {
299 rc = ll_dom_lock_cancel(inode, lock);
301 CDEBUG(D_INODE, "cannot flush DoM data "
303 PFID(ll_inode2fid(inode)), rc);
304 lock_res_and_lock(lock);
305 ldlm_set_kms_ignore(lock);
306 unlock_res_and_lock(lock);
309 if (bits & MDS_INODELOCK_LAYOUT) {
310 struct cl_object_conf conf = {
311 .coc_opc = OBJECT_CONF_INVALIDATE,
315 rc = ll_layout_conf(inode, &conf);
317 CDEBUG(D_INODE, "cannot invalidate layout of "
319 PFID(ll_inode2fid(inode)), rc);
322 if (bits & MDS_INODELOCK_UPDATE) {
323 struct ll_inode_info *lli = ll_i2info(inode);
325 lli->lli_update_atime = 1;
328 if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
329 struct ll_inode_info *lli = ll_i2info(inode);
331 CDEBUG(D_INODE, "invalidating inode "DFID" lli = %p, "
332 "pfid = "DFID"\n", PFID(ll_inode2fid(inode)),
333 lli, PFID(&lli->lli_pfid));
334 truncate_inode_pages(inode->i_mapping, 0);
336 if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
337 struct inode *master_inode = NULL;
340 /* This is slave inode, since all of the child dentry
341 * is connected on the master inode, so we have to
342 * invalidate the negative children on master inode */
343 CDEBUG(D_INODE, "Invalidate s"DFID" m"DFID"\n",
344 PFID(ll_inode2fid(inode)), PFID(&lli->lli_pfid));
346 hash = cl_fid_build_ino(&lli->lli_pfid,
347 ll_need_32bit_api(ll_i2sbi(inode)));
349 /* Do not lookup the inode with ilookup5, otherwise
350 * it will cause dead lock,
351 * 1. Client1 send chmod req to the MDT0, then on MDT0,
352 * it enqueues master and all of its slaves lock,
353 * (mdt_attr_set() -> mdt_lock_slaves()), after gets
354 * master and stripe0 lock, it will send the enqueue
355 * req (for stripe1) to MDT1, then MDT1 finds the lock
356 * has been granted to client2. Then MDT1 sends blocking
358 * 2. At the same time, client2 tries to unlink
359 * the striped dir (rm -rf striped_dir), and during
360 * lookup, it will hold the master inode of the striped
361 * directory, whose inode state is NEW, then tries to
362 * revalidate all of its slaves, (ll_prep_inode()->
363 * ll_iget()->ll_read_inode2()-> ll_update_inode().).
364 * And it will be blocked on the server side because
366 * 3. Then the client get the blocking_ast req, cancel
367 * the lock, but being blocked if using ->ilookup5()),
368 * because master inode state is NEW. */
369 master_inode = ilookup5_nowait(inode->i_sb, hash,
370 ll_test_inode_by_fid,
371 (void *)&lli->lli_pfid);
373 ll_invalidate_negative_children(master_inode);
377 ll_invalidate_negative_children(inode);
381 if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
382 inode->i_sb->s_root != NULL &&
383 inode != inode->i_sb->s_root->d_inode)
384 ll_invalidate_aliases(inode);
390 /* Check if the given lock may be downgraded instead of canceling and
391 * that convert is really needed. */
392 int ll_md_need_convert(struct ldlm_lock *lock)
394 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
396 __u64 wanted = lock->l_policy_data.l_inodebits.cancel_bits;
397 __u64 bits = lock->l_policy_data.l_inodebits.bits & ~wanted;
398 enum ldlm_mode mode = LCK_MINMODE;
400 if (!lock->l_conn_export ||
401 !exp_connect_lock_convert(lock->l_conn_export))
404 if (!wanted || !bits || ldlm_is_cancel(lock))
407 /* do not convert locks other than DOM for now */
408 if (!((bits | wanted) & MDS_INODELOCK_DOM))
411 /* We may have already remaining bits in some other lock so
412 * lock convert will leave us just extra lock for the same bit.
413 * Check if client has other lock with the same bits and the same
414 * or lower mode and don't convert if any.
416 switch (lock->l_req_mode) {
428 /* do not convert other modes */
432 /* is lock is too old to be converted? */
433 lock_res_and_lock(lock);
434 if (ktime_after(ktime_get(),
435 ktime_add(lock->l_last_used,
436 ktime_set(ns->ns_dirty_age_limit, 0)))) {
437 unlock_res_and_lock(lock);
440 unlock_res_and_lock(lock);
442 inode = ll_inode_from_resource_lock(lock);
443 ll_have_md_lock(inode, &bits, mode);
448 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
449 void *data, int flag)
451 struct lustre_handle lockh;
452 __u64 bits = lock->l_policy_data.l_inodebits.bits;
458 case LDLM_CB_BLOCKING:
460 __u64 cancel_flags = LCF_ASYNC;
462 if (ll_md_need_convert(lock)) {
463 cancel_flags |= LCF_CONVERT;
464 /* For lock convert some cancel actions may require
465 * this lock with non-dropped canceled bits, e.g. page
466 * flush for DOM lock. So call ll_lock_cancel_bits()
467 * here while canceled bits are still set.
469 bits = lock->l_policy_data.l_inodebits.cancel_bits;
470 if (bits & MDS_INODELOCK_DOM)
471 ll_lock_cancel_bits(lock, MDS_INODELOCK_DOM);
473 ldlm_lock2handle(lock, &lockh);
474 rc = ldlm_cli_cancel(&lockh, cancel_flags);
476 CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
481 case LDLM_CB_CANCELING:
482 /* Nothing to do for non-granted locks */
483 if (!ldlm_is_granted(lock))
486 if (ldlm_is_converting(lock)) {
487 /* this is called on already converted lock, so
488 * ibits has remained bits only and cancel_bits
489 * are bits that were dropped.
490 * Note that DOM lock is handled prior lock convert
491 * and is excluded here.
493 bits = lock->l_policy_data.l_inodebits.cancel_bits &
496 LASSERT(ldlm_is_canceling(lock));
498 ll_lock_cancel_bits(lock, bits);
507 __u32 ll_i2suppgid(struct inode *i)
509 if (in_group_p(i->i_gid))
510 return (__u32)from_kgid(&init_user_ns, i->i_gid);
512 return (__u32) __kgid_val(INVALID_GID);
515 /* Pack the required supplementary groups into the supplied groups array.
516 * If we don't need to use the groups from the target inode(s) then we
517 * instead pack one or more groups from the user's supplementary group
518 * array in case it might be useful. Not needed if doing an MDS-side upcall. */
519 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
522 LASSERT(suppgids != NULL);
524 suppgids[0] = ll_i2suppgid(i1);
527 suppgids[1] = ll_i2suppgid(i2);
533 * try to reuse three types of dentry:
534 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
535 * by concurrent .revalidate).
536 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
537 * be cleared by others calling d_lustre_revalidate).
538 * 3. DISCONNECTED alias.
540 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
542 struct dentry *alias, *discon_alias, *invalid_alias;
543 DECLARE_LL_D_HLIST_NODE_PTR(p);
545 if (ll_d_hlist_empty(&inode->i_dentry))
548 discon_alias = invalid_alias = NULL;
550 ll_lock_dcache(inode);
551 ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry) {
552 LASSERT(alias != dentry);
554 spin_lock(&alias->d_lock);
555 if ((alias->d_flags & DCACHE_DISCONNECTED) &&
556 S_ISDIR(inode->i_mode))
557 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
558 discon_alias = alias;
559 else if (alias->d_parent == dentry->d_parent &&
560 alias->d_name.hash == dentry->d_name.hash &&
561 alias->d_name.len == dentry->d_name.len &&
562 memcmp(alias->d_name.name, dentry->d_name.name,
563 dentry->d_name.len) == 0)
564 invalid_alias = alias;
565 spin_unlock(&alias->d_lock);
570 alias = invalid_alias ?: discon_alias ?: NULL;
572 spin_lock(&alias->d_lock);
574 spin_unlock(&alias->d_lock);
576 ll_unlock_dcache(inode);
582 * Similar to d_splice_alias(), but lustre treats invalid alias
583 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
585 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
591 new = ll_find_alias(inode, de);
601 "Reuse dentry %p inode %p refc %d flags %#x\n",
602 new, new->d_inode, ll_d_count(new), new->d_flags);
610 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
611 de, de->d_inode, ll_d_count(de), de->d_flags);
615 static int ll_lookup_it_finish(struct ptlrpc_request *request,
616 struct lookup_intent *it,
617 struct inode *parent, struct dentry **de,
618 void *secctx, __u32 secctxlen)
620 struct inode *inode = NULL;
623 struct dentry *alias;
626 /* NB 1 request reference will be taken away by ll_intent_lock()
628 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
630 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
631 struct req_capsule *pill = &request->rq_pill;
632 struct mdt_body *body = req_capsule_server_get(pill,
635 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
639 if (it->it_op & IT_OPEN)
640 ll_dom_finish_open(inode, request, it);
642 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
644 /* We used to query real size from OSTs here, but actually
645 * this is not needed. For stat() calls size would be updated
646 * from subsequent do_revalidate()->ll_inode_revalidate_it() in
648 * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
649 * Everybody else who needs correct file size would call
650 * ll_glimpse_size or some equivalent themselves anyway.
654 /* If security context was returned by MDT, put it in
655 * inode now to save an extra getxattr from security hooks,
656 * and avoid deadlock.
658 if (body->mbo_valid & OBD_MD_SECCTX) {
659 secctx = req_capsule_server_get(pill, &RMF_FILE_SECCTX);
660 secctxlen = req_capsule_get_size(pill,
665 CDEBUG(D_SEC, "server returned security context"
667 PFID(ll_inode2fid(inode)));
670 if (secctx != NULL && secctxlen != 0) {
672 rc = security_inode_notifysecctx(inode, secctx,
676 CWARN("cannot set security context for "
678 PFID(ll_inode2fid(inode)), rc);
682 /* Only hash *de if it is unhashed (new dentry).
683 * Atoimc_open may passin hashed dentries for open.
685 alias = ll_splice_alias(inode, *de);
687 GOTO(out, rc = PTR_ERR(alias));
691 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
692 /* we have lookup look - unhide dentry */
693 if (bits & MDS_INODELOCK_LOOKUP)
694 d_lustre_revalidate(*de);
695 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
697 * If file was created on the server, the dentry is revalidated
698 * in ll_create_it if the lock allows for it.
700 /* Check that parent has UPDATE lock. */
701 struct lookup_intent parent_it = {
703 .it_lock_handle = 0 };
704 struct lu_fid fid = ll_i2info(parent)->lli_fid;
706 /* If it is striped directory, get the real stripe parent */
707 if (unlikely(ll_i2info(parent)->lli_lsm_md != NULL)) {
708 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
709 ll_i2info(parent)->lli_lsm_md,
711 (*de)->d_name.len, &fid);
716 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
718 d_lustre_revalidate(*de);
719 ll_intent_release(&parent_it);
726 if (rc != 0 && it->it_op & IT_OPEN)
727 ll_open_cleanup((*de)->d_sb, request);
732 struct pcc_create_attach {
733 struct pcc_dataset *pca_dataset;
734 struct dentry *pca_dentry;
737 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
738 struct lookup_intent *it,
739 void **secctx, __u32 *secctxlen,
740 struct pcc_create_attach *pca)
742 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
743 struct dentry *save = dentry, *retval;
744 struct ptlrpc_request *req = NULL;
745 struct md_op_data *op_data = NULL;
746 struct lov_user_md *lum = NULL;
749 char secctx_name[XATTR_NAME_MAX + 1];
753 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
754 RETURN(ERR_PTR(-ENAMETOOLONG));
756 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
757 dentry->d_name.len, dentry->d_name.name,
758 PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
760 if (d_mountpoint(dentry))
761 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
763 if (it == NULL || it->it_op == IT_GETXATTR)
766 if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
767 rc = ll_statahead(parent, &dentry, 0);
769 RETURN(dentry == save ? NULL : dentry);
772 if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE &&
773 dentry->d_sb->s_flags & MS_RDONLY)
774 RETURN(ERR_PTR(-EROFS));
776 if (it->it_op & IT_CREAT)
777 opc = LUSTRE_OPC_CREATE;
779 opc = LUSTRE_OPC_ANY;
781 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
782 dentry->d_name.len, 0, opc, NULL);
784 GOTO(out, retval = ERR_CAST(op_data));
786 /* enforce umask if acl disabled or MDS doesn't support umask */
787 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
788 it->it_create_mode &= ~current_umask();
790 if (it->it_op & IT_CREAT &&
791 ll_i2sbi(parent)->ll_flags & LL_SBI_FILE_SECCTX) {
792 rc = ll_dentry_init_security(dentry, it->it_create_mode,
794 &op_data->op_file_secctx_name,
795 &op_data->op_file_secctx,
796 &op_data->op_file_secctx_size);
798 GOTO(out, retval = ERR_PTR(rc));
800 *secctx = op_data->op_file_secctx;
801 if (secctxlen != NULL)
802 *secctxlen = op_data->op_file_secctx_size;
806 if (secctxlen != NULL)
810 /* ask for security context upon intent */
811 if (it->it_op & (IT_LOOKUP | IT_GETATTR | IT_OPEN)) {
812 /* get name of security xattr to request to server */
813 rc = ll_listsecurity(parent, secctx_name,
814 sizeof(secctx_name));
816 CDEBUG(D_SEC, "cannot get security xattr name for "
818 PFID(ll_inode2fid(parent)), rc);
820 op_data->op_file_secctx_name = secctx_name;
821 op_data->op_file_secctx_name_size = rc;
822 CDEBUG(D_SEC, "'%.*s' is security xattr for "DFID"\n",
823 rc, secctx_name, PFID(ll_inode2fid(parent)));
827 if (pca && pca->pca_dataset) {
828 struct pcc_dataset *dataset = pca->pca_dataset;
832 GOTO(out, retval = ERR_PTR(-ENOMEM));
834 lum->lmm_magic = LOV_USER_MAGIC_V1;
835 lum->lmm_pattern = LOV_PATTERN_F_RELEASED | LOV_PATTERN_RAID0;
836 op_data->op_data = lum;
837 op_data->op_data_size = sizeof(*lum);
838 op_data->op_archive_id = dataset->pccd_id;
840 rc = obd_fid_alloc(NULL, ll_i2mdexp(parent), &op_data->op_fid2,
843 GOTO(out, retval = ERR_PTR(rc));
845 rc = pcc_inode_create(dataset, &op_data->op_fid2,
848 GOTO(out, retval = ERR_PTR(rc));
850 it->it_flags |= MDS_OPEN_PCC;
853 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
854 &ll_md_blocking_ast, 0);
855 /* If the MDS allows the client to chgrp (CFS_SETGRP_PERM), but the
856 * client does not know which suppgid should be sent to the MDS, or
857 * some other(s) changed the target file's GID after this RPC sent
858 * to the MDS with the suppgid as the original GID, then we should
859 * try again with right suppgid. */
860 if (rc == -EACCES && it->it_op & IT_OPEN &&
861 it_disposition(it, DISP_OPEN_DENY)) {
862 struct mdt_body *body;
864 LASSERT(req != NULL);
866 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
867 if (op_data->op_suppgids[0] == body->mbo_gid ||
868 op_data->op_suppgids[1] == body->mbo_gid ||
869 !in_group_p(make_kgid(&init_user_ns, body->mbo_gid)))
870 GOTO(out, retval = ERR_PTR(-EACCES));
872 fid_zero(&op_data->op_fid2);
873 op_data->op_suppgids[1] = body->mbo_gid;
874 ptlrpc_req_finished(req);
876 ll_intent_release(it);
877 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
878 &ll_md_blocking_ast, 0);
882 GOTO(out, retval = ERR_PTR(rc));
884 /* dir layout may change */
885 ll_unlock_md_op_lsm(op_data);
886 rc = ll_lookup_it_finish(req, it, parent, &dentry,
887 secctx != NULL ? *secctx : NULL,
888 secctxlen != NULL ? *secctxlen : 0);
890 ll_intent_release(it);
891 GOTO(out, retval = ERR_PTR(rc));
894 if ((it->it_op & IT_OPEN) && dentry->d_inode &&
895 !S_ISREG(dentry->d_inode->i_mode) &&
896 !S_ISDIR(dentry->d_inode->i_mode)) {
897 ll_release_openhandle(dentry, it);
899 ll_lookup_finish_locks(it, dentry);
901 GOTO(out, retval = (dentry == save) ? NULL : dentry);
904 if (op_data != NULL && !IS_ERR(op_data)) {
905 if (secctx != NULL && secctxlen != NULL) {
906 /* caller needs sec ctx info, so reset it in op_data to
907 * prevent it from being freed */
908 op_data->op_file_secctx = NULL;
909 op_data->op_file_secctx_size = 0;
911 ll_finish_md_op_data(op_data);
917 ptlrpc_req_finished(req);
921 #ifdef HAVE_IOP_ATOMIC_OPEN
922 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
925 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
928 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), flags=%u\n",
929 dentry->d_name.len, dentry->d_name.name,
930 PFID(ll_inode2fid(parent)), parent, flags);
933 * Optimize away (CREATE && !OPEN). Let .create handle the race.
934 * but only if we have write permissions there, otherwise we need
935 * to proceed with lookup. LU-4185
937 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
938 (inode_permission(parent, MAY_WRITE | MAY_EXEC) == 0))
941 if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
945 de = ll_lookup_it(parent, dentry, itp, NULL, NULL, NULL);
948 ll_intent_release(itp);
954 * For cached negative dentry and new dentry, handle lookup/create/open
957 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
958 struct file *file, unsigned open_flags,
959 umode_t mode, int *opened)
961 struct lookup_intent *it;
963 long long lookup_flags = LOOKUP_OPEN;
966 struct ll_sb_info *sbi;
967 struct pcc_create_attach pca = {NULL, NULL};
968 struct pcc_dataset *dataset = NULL;
972 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), file %p,"
973 "open_flags %x, mode %x opened %d\n",
974 dentry->d_name.len, dentry->d_name.name,
975 PFID(ll_inode2fid(dir)), dir, file, open_flags, mode, *opened);
977 /* Only negative dentries enter here */
978 LASSERT(dentry->d_inode == NULL);
980 if (!d_unhashed(dentry)) {
981 /* A valid negative dentry that just passed revalidation,
982 * there's little point to try and open it server-side,
983 * even though there's a minuscule chance it might succeed.
984 * Either way it's a valid race to just return -ENOENT here.
986 if (!(open_flags & O_CREAT))
989 /* Otherwise we just unhash it to be rehashed afresh via
990 * lookup if necessary
995 OBD_ALLOC(it, sizeof(*it));
1000 if (open_flags & O_CREAT) {
1001 it->it_op |= IT_CREAT;
1002 lookup_flags |= LOOKUP_CREATE;
1003 sbi = ll_i2sbi(dir);
1004 /* Volatile file is used for HSM restore, so do not use PCC */
1005 if (!filename_is_volatile(dentry->d_name.name,
1006 dentry->d_name.len, NULL)) {
1007 dataset = pcc_dataset_get(&sbi->ll_pcc_super,
1008 ll_i2info(dir)->lli_projid,
1010 pca.pca_dataset = dataset;
1013 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
1014 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
1015 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1017 /* Dentry added to dcache tree in ll_lookup_it */
1018 de = ll_lookup_it(dir, dentry, it, &secctx, &secctxlen, &pca);
1021 else if (de != NULL)
1024 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1027 if (it_disposition(it, DISP_OPEN_CREATE)) {
1028 /* Dentry instantiated in ll_create_it. */
1029 rc = ll_create_it(dir, dentry, it, secctx, secctxlen);
1030 security_release_secctx(secctx, secctxlen);
1032 /* We dget in ll_splice_alias. */
1037 if (dataset != NULL && dentry->d_inode) {
1038 rc = pcc_inode_create_fini(dataset,
1044 GOTO(out_release, rc);
1048 *opened |= FILE_CREATED;
1051 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN)) {
1053 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1054 /* We cannot call open here as it might
1055 * deadlock. This case is unreachable in
1056 * practice because of OBD_CONNECT_NODEVOH. */
1057 rc = finish_no_open(file, de);
1059 file->private_data = it;
1060 rc = finish_open(file, dentry, NULL, opened);
1061 /* We dget in ll_splice_alias. finish_open takes
1062 * care of dget for fd open.
1068 rc = finish_no_open(file, de);
1073 if (dataset != NULL)
1074 pcc_dataset_put(dataset);
1075 ll_intent_release(it);
1076 OBD_FREE(it, sizeof(*it));
1081 #else /* !HAVE_IOP_ATOMIC_OPEN */
1082 static struct lookup_intent *
1083 ll_convert_intent(struct open_intent *oit, int lookup_flags, bool is_readonly)
1085 struct lookup_intent *it;
1089 return ERR_PTR(-ENOMEM);
1091 if (lookup_flags & LOOKUP_OPEN) {
1092 it->it_op = IT_OPEN;
1093 /* Avoid file creation for ro bind mount point(is_readonly) */
1094 if ((lookup_flags & LOOKUP_CREATE) && !is_readonly)
1095 it->it_op |= IT_CREAT;
1096 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
1097 it->it_flags = ll_namei_to_lookup_intent_flag(oit->flags &
1098 ~(is_readonly ? O_CREAT : 0));
1099 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
1101 it->it_op = IT_GETATTR;
1107 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
1108 struct nameidata *nd)
1113 if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
1114 struct lookup_intent *it;
1116 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
1117 it = ll_d2d(dentry)->lld_it;
1118 ll_d2d(dentry)->lld_it = NULL;
1121 * Optimize away (CREATE && !OPEN). Let .create handle
1122 * the race. But only if we have write permissions
1123 * there, otherwise we need to proceed with lookup.
1126 if ((nd->flags & LOOKUP_CREATE) &&
1127 !(nd->flags & LOOKUP_OPEN) &&
1128 (inode_permission(parent,
1129 MAY_WRITE | MAY_EXEC) == 0))
1132 it = ll_convert_intent(&nd->intent.open, nd->flags,
1133 (nd->path.mnt->mnt_flags & MNT_READONLY) ||
1134 (nd->path.mnt->mnt_sb->s_flags & MS_RDONLY));
1136 RETURN((struct dentry *)it);
1139 de = ll_lookup_it(parent, dentry, it, NULL, NULL, NULL);
1142 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
1143 if (dentry->d_inode &&
1144 it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
1145 if (S_ISFIFO(dentry->d_inode->i_mode)) {
1146 /* We cannot call open here as it might
1147 * deadlock. This case is unreachable in
1148 * practice because of
1149 * OBD_CONNECT_NODEVOH. */
1153 nd->intent.open.file->private_data = it;
1154 filp = lookup_instantiate_filp(nd,
1160 de = (struct dentry *)filp;
1163 } else if (it_disposition(it, DISP_OPEN_CREATE)) {
1164 /* XXX This can only reliably work on assumption
1165 * that there are NO hashed negative dentries.*/
1166 ll_d2d(dentry)->lld_it = it;
1167 it = NULL; /* Will be freed in ll_create_nd */
1168 /* We absolutely depend on ll_create_nd to be
1169 * called to not leak this intent and possible
1170 * data attached to it */
1175 ll_intent_release(it);
1176 OBD_FREE(it, sizeof(*it));
1179 de = ll_lookup_it(parent, dentry, NULL, NULL, NULL, NULL);
1184 #endif /* HAVE_IOP_ATOMIC_OPEN */
1186 /* We depend on "mode" being set with the proper file type/umask by now */
1187 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
1189 struct inode *inode = NULL;
1190 struct ptlrpc_request *request = NULL;
1191 struct ll_sb_info *sbi = ll_i2sbi(dir);
1195 LASSERT(it && it->it_disposition);
1197 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
1198 request = it->it_request;
1199 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
1200 rc = ll_prep_inode(&inode, request, dir->i_sb, it);
1202 GOTO(out, inode = ERR_PTR(rc));
1204 /* Pause to allow for a race with concurrent access by fid */
1205 OBD_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_NODE_PAUSE, cfs_fail_val);
1207 /* We asked for a lock on the directory, but were granted a
1208 * lock on the inode. Since we finally have an inode pointer,
1209 * stuff it in the lock. */
1210 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
1211 PFID(ll_inode2fid(inode)), inode);
1212 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
1215 ptlrpc_req_finished(request);
1220 * By the time this is called, we already have created the directory cache
1221 * entry for the new file, but it is so far negative - it has no inode.
1223 * We defer creating the OBD object(s) until open, to keep the intent and
1224 * non-intent code paths similar, and also because we do not have the MDS
1225 * inode number before calling ll_create_node() (which is needed for LOV),
1226 * so we would need to do yet another RPC to the MDS to store the LOV EA
1227 * data on the MDS. If needed, we would pass the PACKED lmm as data and
1228 * lmm_size in datalen (the MDS still has code which will handle that).
1230 * If the create succeeds, we fill in the inode information
1231 * with d_instantiate().
1233 static int ll_create_it(struct inode *dir, struct dentry *dentry,
1234 struct lookup_intent *it,
1235 void *secctx, __u32 secctxlen)
1237 struct inode *inode;
1242 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
1243 dentry->d_name.len, dentry->d_name.name,
1244 PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
1246 rc = it_open_error(DISP_OPEN_CREATE, it);
1250 inode = ll_create_node(dir, it);
1252 RETURN(PTR_ERR(inode));
1254 if ((ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX) &&
1257 /* must be done before d_instantiate, because it calls
1258 * security_d_instantiate, which means a getxattr if security
1259 * context is not set yet */
1260 rc = security_inode_notifysecctx(inode, secctx, secctxlen);
1261 inode_unlock(inode);
1266 d_instantiate(dentry, inode);
1268 if (!(ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX)) {
1269 rc = ll_inode_init_security(dentry, inode, dir);
1274 ll_set_lock_data(ll_i2sbi(dir)->ll_md_exp, inode, it, &bits);
1275 if (bits & MDS_INODELOCK_LOOKUP)
1276 d_lustre_revalidate(dentry);
1281 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
1283 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
1287 if (body->mbo_valid & OBD_MD_FLMTIME &&
1288 body->mbo_mtime > inode->i_mtime.tv_sec) {
1290 "setting fid " DFID " mtime from %lld to %llu\n",
1291 PFID(ll_inode2fid(inode)),
1292 (s64)inode->i_mtime.tv_sec, body->mbo_mtime);
1293 inode->i_mtime.tv_sec = body->mbo_mtime;
1296 if (body->mbo_valid & OBD_MD_FLCTIME &&
1297 body->mbo_ctime > inode->i_ctime.tv_sec)
1298 inode->i_ctime.tv_sec = body->mbo_ctime;
1301 static int ll_new_node(struct inode *dir, struct dentry *dchild,
1302 const char *tgt, umode_t mode, int rdev, __u32 opc)
1304 struct qstr *name = &dchild->d_name;
1305 struct ptlrpc_request *request = NULL;
1306 struct md_op_data *op_data;
1307 struct inode *inode = NULL;
1308 struct ll_sb_info *sbi = ll_i2sbi(dir);
1313 if (unlikely(tgt != NULL))
1314 tgt_len = strlen(tgt) + 1;
1317 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1318 name->len, 0, opc, NULL);
1319 if (IS_ERR(op_data))
1320 GOTO(err_exit, err = PTR_ERR(op_data));
1322 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1323 err = ll_dentry_init_security(dchild, mode, &dchild->d_name,
1324 &op_data->op_file_secctx_name,
1325 &op_data->op_file_secctx,
1326 &op_data->op_file_secctx_size);
1328 GOTO(err_exit, err);
1331 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
1332 from_kuid(&init_user_ns, current_fsuid()),
1333 from_kgid(&init_user_ns, current_fsgid()),
1334 cfs_curproc_cap_pack(), rdev, &request);
1335 if (err < 0 && err != -EREMOTE)
1336 GOTO(err_exit, err);
1338 /* If the client doesn't know where to create a subdirectory (or
1339 * in case of a race that sends the RPC to the wrong MDS), the
1340 * MDS will return -EREMOTE and the client will fetch the layout
1341 * of the directory, then create the directory on the right MDT. */
1342 if (unlikely(err == -EREMOTE)) {
1343 struct ll_inode_info *lli = ll_i2info(dir);
1344 struct lmv_user_md *lum;
1348 ptlrpc_req_finished(request);
1351 err2 = ll_dir_getstripe(dir, (void **)&lum, &lumsize, &request,
1352 OBD_MD_DEFAULT_MEA);
1354 /* Update stripe_offset and retry */
1355 lli->lli_def_stripe_offset = lum->lum_stripe_offset;
1356 } else if (err2 == -ENODATA &&
1357 lli->lli_def_stripe_offset != -1) {
1358 /* If there are no default stripe EA on the MDT, but the
1359 * client has default stripe, then it probably means
1360 * default stripe EA has just been deleted. */
1361 lli->lli_def_stripe_offset = -1;
1363 GOTO(err_exit, err);
1366 ptlrpc_req_finished(request);
1368 ll_finish_md_op_data(op_data);
1372 ll_update_times(request, dir);
1374 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_NEWNODE_PAUSE, cfs_fail_val);
1376 err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
1378 GOTO(err_exit, err);
1380 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
1382 /* must be done before d_instantiate, because it calls
1383 * security_d_instantiate, which means a getxattr if security
1384 * context is not set yet */
1385 err = security_inode_notifysecctx(inode,
1386 op_data->op_file_secctx,
1387 op_data->op_file_secctx_size);
1388 inode_unlock(inode);
1390 GOTO(err_exit, err);
1393 d_instantiate(dchild, inode);
1395 if (!(sbi->ll_flags & LL_SBI_FILE_SECCTX)) {
1396 err = ll_inode_init_security(dchild, inode, dir);
1398 GOTO(err_exit, err);
1403 if (request != NULL)
1404 ptlrpc_req_finished(request);
1406 if (!IS_ERR_OR_NULL(op_data))
1407 ll_finish_md_op_data(op_data);
1412 static int ll_mknod(struct inode *dir, struct dentry *dchild, ll_umode_t mode,
1415 struct qstr *name = &dchild->d_name;
1419 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p) mode %o dev %x\n",
1420 name->len, name->name, PFID(ll_inode2fid(dir)), dir,
1423 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1424 mode &= ~current_umask();
1426 switch (mode & S_IFMT) {
1428 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
1434 err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
1445 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD, 1);
1450 #ifdef HAVE_IOP_ATOMIC_OPEN
1452 * Plain create. Intent create is handled in atomic_open.
1454 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1455 umode_t mode, bool want_excl)
1459 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1461 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), "
1462 "flags=%u, excl=%d\n", dentry->d_name.len,
1463 dentry->d_name.name, PFID(ll_inode2fid(dir)),
1464 dir, mode, want_excl);
1466 /* Using mknod(2) to create a regular file is designed to not recognize
1467 * volatile file name, so we use ll_mknod() here. */
1468 rc = ll_mknod(dir, dentry, mode, 0);
1470 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
1472 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, unhashed %d\n",
1473 dentry->d_name.len, dentry->d_name.name, d_unhashed(dentry));
1477 #else /* !HAVE_IOP_ATOMIC_OPEN */
1478 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
1479 ll_umode_t mode, struct nameidata *nd)
1481 struct ll_dentry_data *lld = ll_d2d(dentry);
1482 struct lookup_intent *it = NULL;
1485 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
1491 /* LU-8559: use LUSTRE_OPC_CREATE for non atomic open case
1492 * so that volatile file name is recoginized.
1493 * Mknod(2), however, is designed to not recognize volatile
1494 * file name to avoid inode leak under orphan directory until
1496 return ll_new_node(dir, dentry, NULL, mode, 0,
1502 /* Was there an error? Propagate it! */
1503 if (it->it_status) {
1508 rc = ll_create_it(dir, dentry, it, NULL, 0);
1509 if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
1512 nd->intent.open.file->private_data = it;
1513 filp = lookup_instantiate_filp(nd, dentry, NULL);
1519 ll_intent_release(it);
1520 OBD_FREE(it, sizeof(*it));
1523 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
1527 #endif /* HAVE_IOP_ATOMIC_OPEN */
1529 static int ll_symlink(struct inode *dir, struct dentry *dchild,
1530 const char *oldpath)
1532 struct qstr *name = &dchild->d_name;
1536 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), target=%.*s\n",
1537 name->len, name->name, PFID(ll_inode2fid(dir)),
1538 dir, 3000, oldpath);
1540 err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO, 0,
1541 LUSTRE_OPC_SYMLINK);
1544 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
1549 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1550 struct dentry *new_dentry)
1552 struct inode *src = old_dentry->d_inode;
1553 struct qstr *name = &new_dentry->d_name;
1554 struct ll_sb_info *sbi = ll_i2sbi(dir);
1555 struct ptlrpc_request *request = NULL;
1556 struct md_op_data *op_data;
1560 CDEBUG(D_VFSTRACE, "VFS Op: inode="DFID"(%p), dir="DFID"(%p), "
1561 "target=%.*s\n", PFID(ll_inode2fid(src)), src,
1562 PFID(ll_inode2fid(dir)), dir, name->len, name->name);
1564 op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
1565 0, LUSTRE_OPC_ANY, NULL);
1566 if (IS_ERR(op_data))
1567 RETURN(PTR_ERR(op_data));
1569 err = md_link(sbi->ll_md_exp, op_data, &request);
1570 ll_finish_md_op_data(op_data);
1574 ll_update_times(request, dir);
1575 ll_stats_ops_tally(sbi, LPROC_LL_LINK, 1);
1578 ptlrpc_req_finished(request);
1582 static int ll_mkdir(struct inode *dir, struct dentry *dchild, ll_umode_t mode)
1584 struct qstr *name = &dchild->d_name;
1588 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1589 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1591 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1592 mode &= ~current_umask();
1594 mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
1596 err = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1598 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
1603 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1605 struct qstr *name = &dchild->d_name;
1606 struct ptlrpc_request *request = NULL;
1607 struct md_op_data *op_data;
1611 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1612 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1614 if (unlikely(d_mountpoint(dchild)))
1617 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1618 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1619 if (IS_ERR(op_data))
1620 RETURN(PTR_ERR(op_data));
1622 if (dchild->d_inode != NULL)
1623 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1625 op_data->op_fid2 = op_data->op_fid3;
1626 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1627 ll_finish_md_op_data(op_data);
1629 ll_update_times(request, dir);
1630 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
1633 ptlrpc_req_finished(request);
1640 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
1642 struct ptlrpc_request *request = NULL;
1643 struct md_op_data *op_data;
1647 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1648 namelen, name, PFID(ll_inode2fid(dir)), dir);
1650 op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
1651 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1652 if (IS_ERR(op_data))
1653 RETURN(PTR_ERR(op_data));
1654 op_data->op_cli_flags |= CLI_RM_ENTRY;
1655 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1656 ll_finish_md_op_data(op_data);
1658 ll_update_times(request, dir);
1659 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
1662 ptlrpc_req_finished(request);
1666 static int ll_unlink(struct inode *dir, struct dentry *dchild)
1668 struct qstr *name = &dchild->d_name;
1669 struct ptlrpc_request *request = NULL;
1670 struct md_op_data *op_data;
1671 struct mdt_body *body;
1674 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1675 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1678 * XXX: unlink bind mountpoint maybe call to here,
1679 * just check it as vfs_unlink does.
1681 if (unlikely(d_mountpoint(dchild)))
1684 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
1685 LUSTRE_OPC_ANY, NULL);
1686 if (IS_ERR(op_data))
1687 RETURN(PTR_ERR(op_data));
1689 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1691 op_data->op_fid2 = op_data->op_fid3;
1692 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1693 ll_finish_md_op_data(op_data);
1698 * The server puts attributes in on the last unlink, use them to update
1699 * the link count so the inode can be freed immediately.
1701 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1702 if (body->mbo_valid & OBD_MD_FLNLINK)
1703 set_nlink(dchild->d_inode, body->mbo_nlink);
1705 ll_update_times(request, dir);
1706 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
1709 ptlrpc_req_finished(request);
1713 static int ll_rename(struct inode *src, struct dentry *src_dchild,
1714 struct inode *tgt, struct dentry *tgt_dchild
1715 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1716 , unsigned int flags
1720 struct qstr *src_name = &src_dchild->d_name;
1721 struct qstr *tgt_name = &tgt_dchild->d_name;
1722 struct ptlrpc_request *request = NULL;
1723 struct ll_sb_info *sbi = ll_i2sbi(src);
1724 struct md_op_data *op_data;
1728 #ifdef HAVE_IOPS_RENAME_WITH_FLAGS
1733 CDEBUG(D_VFSTRACE, "VFS Op:oldname=%.*s, src_dir="DFID
1734 "(%p), newname=%.*s, tgt_dir="DFID"(%p)\n",
1735 src_name->len, src_name->name,
1736 PFID(ll_inode2fid(src)), src, tgt_name->len,
1737 tgt_name->name, PFID(ll_inode2fid(tgt)), tgt);
1739 if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
1742 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1743 LUSTRE_OPC_ANY, NULL);
1744 if (IS_ERR(op_data))
1745 RETURN(PTR_ERR(op_data));
1747 if (src_dchild->d_inode != NULL)
1748 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1750 if (tgt_dchild->d_inode != NULL)
1751 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1753 err = md_rename(sbi->ll_md_exp, op_data,
1754 src_name->name, src_name->len,
1755 tgt_name->name, tgt_name->len, &request);
1756 ll_finish_md_op_data(op_data);
1758 ll_update_times(request, src);
1759 ll_update_times(request, tgt);
1760 ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
1763 ptlrpc_req_finished(request);
1766 d_move(src_dchild, tgt_dchild);
1771 const struct inode_operations ll_dir_inode_operations = {
1773 #ifdef HAVE_IOP_ATOMIC_OPEN
1774 .atomic_open = ll_atomic_open,
1776 .lookup = ll_lookup_nd,
1777 .create = ll_create_nd,
1778 /* We need all these non-raw things for NFSD, to not patch it. */
1779 .unlink = ll_unlink,
1782 .symlink = ll_symlink,
1784 .rename = ll_rename,
1785 .setattr = ll_setattr,
1786 .getattr = ll_getattr,
1787 .permission = ll_inode_permission,
1788 #ifdef HAVE_IOP_XATTR
1789 .setxattr = ll_setxattr,
1790 .getxattr = ll_getxattr,
1791 .removexattr = ll_removexattr,
1793 .listxattr = ll_listxattr,
1794 #ifdef HAVE_IOP_GET_ACL
1795 .get_acl = ll_get_acl,
1797 #ifdef HAVE_IOP_SET_ACL
1798 .set_acl = ll_set_acl,
1802 const struct inode_operations ll_special_inode_operations = {
1803 .setattr = ll_setattr,
1804 .getattr = ll_getattr,
1805 .permission = ll_inode_permission,
1806 #ifdef HAVE_IOP_XATTR
1807 .setxattr = ll_setxattr,
1808 .getxattr = ll_getxattr,
1809 .removexattr = ll_removexattr,
1811 .listxattr = ll_listxattr,
1812 #ifdef HAVE_IOP_GET_ACL
1813 .get_acl = ll_get_acl,
1815 #ifdef HAVE_IOP_SET_ACL
1816 .set_acl = ll_set_acl,