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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 #include <linux/sched.h>
40 #include <linux/smp_lock.h>
41 #include <linux/quotaops.h>
42 #include <linux/highmem.h>
43 #include <linux/pagemap.h>
44 #include <linux/security.h>
46 #define DEBUG_SUBSYSTEM S_LLITE
48 #include <obd_support.h>
49 #include <lustre_fid.h>
50 #include <lustre_lite.h>
51 #include <lustre_dlm.h>
52 #include <lustre_ver.h>
53 #include "llite_internal.h"
56 * Check if we have something mounted at the named dchild.
57 * In such a case there would always be dentry present.
59 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
64 if (unlikely(dchild)) {
65 mounted = d_mountpoint(dchild);
67 dchild = d_lookup(dparent, name);
69 mounted = d_mountpoint(dchild);
76 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
80 ldlm_lock_decref(lockh, mode);
86 /* called from iget5_locked->find_inode() under inode_lock spinlock */
87 static int ll_test_inode(struct inode *inode, void *opaque)
89 struct ll_inode_info *lli = ll_i2info(inode);
90 struct lustre_md *md = opaque;
92 if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
93 CERROR("MDS body missing FID\n");
97 if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
103 static int ll_set_inode(struct inode *inode, void *opaque)
105 struct ll_inode_info *lli = ll_i2info(inode);
106 struct mdt_body *body = ((struct lustre_md *)opaque)->body;
108 if (unlikely(!(body->valid & OBD_MD_FLID))) {
109 CERROR("MDS body missing FID\n");
113 lli->lli_fid = body->fid1;
114 if (unlikely(!(body->valid & OBD_MD_FLTYPE))) {
115 CERROR("Can not initialize inode "DFID" without object type: "
116 "valid = "LPX64"\n", PFID(&lli->lli_fid), body->valid);
120 inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mode & S_IFMT);
121 if (unlikely(inode->i_mode == 0)) {
122 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
133 * Get an inode by inode number (already instantiated by the intent lookup).
134 * Returns inode or NULL
136 struct inode *ll_iget(struct super_block *sb, ino_t hash,
137 struct lustre_md *md)
143 inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
146 if (inode->i_state & I_NEW) {
149 ll_read_inode2(inode, md);
150 if (S_ISREG(inode->i_mode) &&
151 ll_i2info(inode)->lli_clob == NULL)
152 rc = cl_file_inode_init(inode, md);
155 make_bad_inode(inode);
156 unlock_new_inode(inode);
160 unlock_new_inode(inode);
161 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
162 ll_update_inode(inode, md);
163 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
164 inode, PFID(&md->body->fid1));
169 static void ll_invalidate_negative_children(struct inode *dir)
171 struct dentry *dentry, *tmp_subdir;
174 list_for_each_entry(dentry, &dir->i_dentry, d_alias) {
175 spin_lock(&dentry->d_lock);
176 if (!list_empty(&dentry->d_subdirs)) {
177 struct dentry *child;
179 list_for_each_entry_safe(child, tmp_subdir,
182 if (child->d_inode == NULL)
183 d_lustre_invalidate(child);
186 spin_unlock(&dentry->d_lock);
188 ll_unlock_dcache(dir);
191 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
192 void *data, int flag)
195 struct lustre_handle lockh;
199 case LDLM_CB_BLOCKING:
200 ldlm_lock2handle(lock, &lockh);
201 rc = ldlm_cli_cancel(&lockh);
203 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
207 case LDLM_CB_CANCELING: {
208 struct inode *inode = ll_inode_from_lock(lock);
209 struct ll_inode_info *lli;
210 __u64 bits = lock->l_policy_data.l_inodebits.bits;
212 ldlm_mode_t mode = lock->l_req_mode;
214 /* Invalidate all dentries associated with this inode */
218 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
219 /* For OPEN locks we differentiate between lock modes - CR, CW. PR - bug 22891 */
220 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE))
221 ll_have_md_lock(inode, &bits, LCK_MINMODE);
223 if (bits & MDS_INODELOCK_OPEN)
224 ll_have_md_lock(inode, &bits, mode);
226 fid = ll_inode2fid(inode);
227 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
228 lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
229 lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
230 LDLM_ERROR(lock, "data mismatch with object "
231 DFID" (%p)", PFID(fid), inode);
234 if (bits & MDS_INODELOCK_OPEN) {
236 switch (lock->l_req_mode) {
247 CERROR("Unexpected lock mode for OPEN lock "
248 "%d, inode %ld\n", lock->l_req_mode,
251 ll_md_real_close(inode, flags);
254 lli = ll_i2info(inode);
255 if (bits & MDS_INODELOCK_UPDATE)
256 lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
258 if (S_ISDIR(inode->i_mode) &&
259 (bits & MDS_INODELOCK_UPDATE)) {
260 CDEBUG(D_INODE, "invalidating inode %lu\n",
262 truncate_inode_pages(inode->i_mapping, 0);
263 ll_invalidate_negative_children(inode);
266 if (inode->i_sb->s_root &&
267 inode != inode->i_sb->s_root->d_inode &&
268 (bits & MDS_INODELOCK_LOOKUP))
269 ll_invalidate_aliases(inode);
280 __u32 ll_i2suppgid(struct inode *i)
282 if (cfs_curproc_is_in_groups(i->i_gid))
283 return (__u32)i->i_gid;
288 /* Pack the required supplementary groups into the supplied groups array.
289 * If we don't need to use the groups from the target inode(s) then we
290 * instead pack one or more groups from the user's supplementary group
291 * array in case it might be useful. Not needed if doing an MDS-side upcall. */
292 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
299 LASSERT(suppgids != NULL);
301 suppgids[0] = ll_i2suppgid(i1);
304 suppgids[1] = ll_i2suppgid(i2);
309 for (i = 0; i < current_ngroups; i++) {
310 if (suppgids[0] == -1) {
311 if (current_groups[i] != suppgids[1])
312 suppgids[0] = current_groups[i];
315 if (suppgids[1] == -1) {
316 if (current_groups[i] != suppgids[0])
317 suppgids[1] = current_groups[i];
326 * try to reuse three types of dentry:
327 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
328 * by concurrent .revalidate).
329 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
330 * be cleared by others calling d_lustre_revalidate).
331 * 3. DISCONNECTED alias.
333 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
335 struct dentry *alias, *discon_alias, *invalid_alias;
337 if (list_empty(&inode->i_dentry))
340 discon_alias = invalid_alias = NULL;
342 ll_lock_dcache(inode);
343 list_for_each_entry(alias, &inode->i_dentry, d_alias) {
344 LASSERT(alias != dentry);
346 spin_lock(&alias->d_lock);
347 if (alias->d_flags & DCACHE_DISCONNECTED)
348 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
349 discon_alias = alias;
350 else if (alias->d_parent == dentry->d_parent &&
351 alias->d_name.hash == dentry->d_name.hash &&
352 alias->d_name.len == dentry->d_name.len &&
353 memcmp(alias->d_name.name, dentry->d_name.name,
354 dentry->d_name.len) == 0)
355 invalid_alias = alias;
356 spin_unlock(&alias->d_lock);
361 alias = invalid_alias ?: discon_alias ?: NULL;
363 spin_lock(&alias->d_lock);
365 spin_unlock(&alias->d_lock);
367 ll_unlock_dcache(inode);
373 * Similar to d_splice_alias(), but lustre treats DCACHE_LUSTRE_INVALID alias
374 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
376 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
381 new = ll_find_alias(inode, de);
383 ll_dops_init(new, 1, 1);
387 "Reuse dentry %p inode %p refc %d flags %#x\n",
388 new, new->d_inode, d_refcount(new), new->d_flags);
392 __d_lustre_invalidate(de);
393 ll_dops_init(de, 1, 1);
395 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
396 de, de->d_inode, d_refcount(de), de->d_flags);
400 int ll_lookup_it_finish(struct ptlrpc_request *request,
401 struct lookup_intent *it, void *data)
403 struct it_cb_data *icbd = data;
404 struct dentry **de = icbd->icbd_childp;
405 struct inode *parent = icbd->icbd_parent;
406 struct inode *inode = NULL;
411 /* NB 1 request reference will be taken away by ll_intent_lock()
413 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
414 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
418 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
420 /* We used to query real size from OSTs here, but actually
421 this is not needed. For stat() calls size would be updated
422 from subsequent do_revalidate()->ll_inode_revalidate_it() in
424 vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
425 Everybody else who needs correct file size would call
426 ll_glimpse_size or some equivalent themselves anyway.
427 Also see bug 7198. */
430 *de = ll_splice_alias(inode, *de);
432 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
433 /* we have lookup look - unhide dentry */
434 if (bits & MDS_INODELOCK_LOOKUP)
435 d_lustre_revalidate(*de);
437 /* Check that parent has UPDATE lock. */
438 struct lookup_intent parent_it = {
440 .d.lustre.it_lock_handle = 0 };
442 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it,
443 &ll_i2info(parent)->lli_fid, NULL)) {
444 d_lustre_revalidate(*de);
445 ll_intent_release(&parent_it);
452 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
453 struct lookup_intent *it, int lookup_flags)
455 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
456 struct dentry *save = dentry, *retval;
457 struct ptlrpc_request *req = NULL;
458 struct md_op_data *op_data;
459 struct it_cb_data icbd;
464 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
465 RETURN(ERR_PTR(-ENAMETOOLONG));
467 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
468 dentry->d_name.len, dentry->d_name.name, parent->i_ino,
469 parent->i_generation, parent, LL_IT2STR(it));
471 if (d_mountpoint(dentry))
472 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
474 ll_frob_intent(&it, &lookup_it);
476 /* As do_lookup is called before follow_mount, root dentry may be left
477 * not valid, revalidate it here. */
478 if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
479 (it->it_op & (IT_OPEN | IT_CREAT))) {
480 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
481 MDS_INODELOCK_LOOKUP);
486 if (it->it_op == IT_GETATTR) {
487 rc = ll_statahead_enter(parent, &dentry, 0);
490 GOTO(out, retval = NULL);
491 GOTO(out, retval = dentry);
495 icbd.icbd_childp = &dentry;
496 icbd.icbd_parent = parent;
498 if (it->it_op & IT_CREAT ||
499 (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
500 opc = LUSTRE_OPC_CREATE;
502 opc = LUSTRE_OPC_ANY;
504 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
505 dentry->d_name.len, lookup_flags, opc,
508 RETURN((void *)op_data);
510 it->it_create_mode &= ~cfs_curproc_umask();
512 rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
513 lookup_flags, &req, ll_md_blocking_ast, 0);
514 ll_finish_md_op_data(op_data);
516 GOTO(out, retval = ERR_PTR(rc));
518 rc = ll_lookup_it_finish(req, it, &icbd);
520 ll_intent_release(it);
521 GOTO(out, retval = ERR_PTR(rc));
524 if ((it->it_op & IT_OPEN) && dentry->d_inode &&
525 !S_ISREG(dentry->d_inode->i_mode) &&
526 !S_ISDIR(dentry->d_inode->i_mode)) {
527 ll_release_openhandle(dentry, it);
529 ll_lookup_finish_locks(it, dentry);
532 GOTO(out, retval = NULL);
534 GOTO(out, retval = dentry);
537 ptlrpc_req_finished(req);
538 if (it->it_op == IT_GETATTR && (retval == NULL || retval == dentry))
539 ll_statahead_mark(parent, dentry);
543 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
546 struct lookup_intent *it;
548 OBD_ALLOC(it, sizeof(*it));
550 return ERR_PTR(-ENOMEM);
552 if (lookup_flags & LOOKUP_OPEN) {
554 if (lookup_flags & LOOKUP_CREATE)
555 it->it_op |= IT_CREAT;
556 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
557 it->it_flags = oit->flags;
559 it->it_op = IT_GETATTR;
565 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
566 struct nameidata *nd)
571 if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
572 struct lookup_intent *it;
574 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
575 /* Did we came here from failed revalidate just to propagate
577 if (nd->flags & LOOKUP_OPEN)
578 if (IS_ERR(nd->intent.open.file))
579 RETURN((struct dentry *)nd->intent.open.file);
581 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
582 it = ll_d2d(dentry)->lld_it;
583 ll_d2d(dentry)->lld_it = NULL;
585 if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
586 /* We are sure this is new dentry, so we need to create
587 our private data and set the dentry ops */
588 ll_dops_init(dentry, 1, 1);
589 __d_lustre_invalidate(dentry);
593 it = ll_convert_intent(&nd->intent.open, nd->flags);
595 RETURN((struct dentry *)it);
598 de = ll_lookup_it(parent, dentry, it, nd->flags);
601 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
602 if (dentry->d_inode &&
603 it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
604 if (S_ISFIFO(dentry->d_inode->i_mode)) {
605 // We cannot call open here as it would
608 (struct ptlrpc_request *)
609 it->d.lustre.it_data);
613 nd->intent.open.file->private_data = it;
614 filp = lookup_instantiate_filp(nd,
620 de = (struct dentry *)filp;
623 } else if (it_disposition(it, DISP_OPEN_CREATE)) {
624 // XXX This can only reliably work on assumption
625 // that there are NO hashed negative dentries.
626 ll_d2d(dentry)->lld_it = it;
627 it = NULL; /* Will be freed in ll_create_nd */
628 /* We absolutely depend on ll_create_nd to be
629 * called to not leak this intent and possible
630 * data attached to it */
635 ll_intent_release(it);
636 OBD_FREE(it, sizeof(*it));
639 de = ll_lookup_it(parent, dentry, NULL, 0);
645 /* We depend on "mode" being set with the proper file type/umask by now */
646 static struct inode *ll_create_node(struct inode *dir, const char *name,
647 int namelen, const void *data, int datalen,
648 int mode, __u64 extra,
649 struct lookup_intent *it)
651 struct inode *inode = NULL;
652 struct ptlrpc_request *request = NULL;
653 struct ll_sb_info *sbi = ll_i2sbi(dir);
657 LASSERT(it && it->d.lustre.it_disposition);
659 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
660 request = it->d.lustre.it_data;
661 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
662 rc = ll_prep_inode(&inode, request, dir->i_sb);
664 GOTO(out, inode = ERR_PTR(rc));
666 LASSERT(list_empty(&inode->i_dentry));
668 /* We asked for a lock on the directory, but were granted a
669 * lock on the inode. Since we finally have an inode pointer,
670 * stuff it in the lock. */
671 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
672 inode, inode->i_ino, inode->i_generation);
673 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
676 ptlrpc_req_finished(request);
681 * By the time this is called, we already have created the directory cache
682 * entry for the new file, but it is so far negative - it has no inode.
684 * We defer creating the OBD object(s) until open, to keep the intent and
685 * non-intent code paths similar, and also because we do not have the MDS
686 * inode number before calling ll_create_node() (which is needed for LOV),
687 * so we would need to do yet another RPC to the MDS to store the LOV EA
688 * data on the MDS. If needed, we would pass the PACKED lmm as data and
689 * lmm_size in datalen (the MDS still has code which will handle that).
691 * If the create succeeds, we fill in the inode information
692 * with d_instantiate().
694 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
695 struct lookup_intent *it)
701 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
702 dentry->d_name.len, dentry->d_name.name, dir->i_ino,
703 dir->i_generation, dir, LL_IT2STR(it));
705 rc = it_open_error(DISP_OPEN_CREATE, it);
709 inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
710 NULL, 0, mode, 0, it);
712 RETURN(PTR_ERR(inode));
714 d_instantiate(dentry, inode);
718 static void ll_update_times(struct ptlrpc_request *request,
721 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
725 if (body->valid & OBD_MD_FLMTIME &&
726 body->mtime > LTIME_S(inode->i_mtime)) {
727 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
728 inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
729 LTIME_S(inode->i_mtime) = body->mtime;
731 if (body->valid & OBD_MD_FLCTIME &&
732 body->ctime > LTIME_S(inode->i_ctime))
733 LTIME_S(inode->i_ctime) = body->ctime;
736 static int ll_new_node(struct inode *dir, struct qstr *name,
737 const char *tgt, int mode, int rdev,
738 struct dentry *dchild, __u32 opc)
740 struct ptlrpc_request *request = NULL;
741 struct md_op_data *op_data;
742 struct inode *inode = NULL;
743 struct ll_sb_info *sbi = ll_i2sbi(dir);
748 if (unlikely(tgt != NULL))
749 tgt_len = strlen(tgt) + 1;
751 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
752 name->len, 0, opc, NULL);
754 GOTO(err_exit, err = PTR_ERR(op_data));
756 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
757 cfs_curproc_fsuid(), cfs_curproc_fsgid(),
758 cfs_curproc_cap_pack(), rdev, &request);
759 ll_finish_md_op_data(op_data);
763 ll_update_times(request, dir);
766 err = ll_prep_inode(&inode, request, dchild->d_sb);
770 d_instantiate(dchild, inode);
774 ptlrpc_req_finished(request);
779 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
780 unsigned rdev, struct dentry *dchild)
785 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
786 name->len, name->name, dir->i_ino, dir->i_generation, dir,
789 mode &= ~cfs_curproc_umask();
791 switch (mode & S_IFMT) {
793 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
799 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
810 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD, 1);
815 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
816 int mode, struct nameidata *nd)
818 struct lookup_intent *it = ll_d2d(dentry)->lld_it;
822 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
824 ll_d2d(dentry)->lld_it = NULL;
826 /* Was there an error? Propagate it! */
827 if (it->d.lustre.it_status) {
828 rc = it->d.lustre.it_status;
832 rc = ll_create_it(dir, dentry, mode, it);
833 if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
836 nd->intent.open.file->private_data = it;
837 filp = lookup_instantiate_filp(nd, dentry, NULL);
843 ll_intent_release(it);
844 OBD_FREE(it, sizeof(*it));
847 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
852 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
853 const char *tgt, struct dentry *dchild)
858 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
859 name->len, name->name, dir->i_ino, dir->i_generation,
862 err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
863 0, dchild, LUSTRE_OPC_SYMLINK);
866 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
871 static int ll_link_generic(struct inode *src, struct inode *dir,
872 struct qstr *name, struct dentry *dchild)
874 struct ll_sb_info *sbi = ll_i2sbi(dir);
875 struct ptlrpc_request *request = NULL;
876 struct md_op_data *op_data;
881 "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
882 src->i_ino, src->i_generation, src, dir->i_ino,
883 dir->i_generation, dir, name->len, name->name);
885 op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
886 0, LUSTRE_OPC_ANY, NULL);
888 RETURN(PTR_ERR(op_data));
890 err = md_link(sbi->ll_md_exp, op_data, &request);
891 ll_finish_md_op_data(op_data);
895 ll_update_times(request, dir);
896 ll_stats_ops_tally(sbi, LPROC_LL_LINK, 1);
899 ptlrpc_req_finished(request);
903 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
904 int mode, struct dentry *dchild)
910 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
911 name->len, name->name, dir->i_ino, dir->i_generation, dir);
913 mode = (mode & (S_IRWXUGO|S_ISVTX) & ~cfs_curproc_umask()) | S_IFDIR;
914 err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
917 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
922 /* Try to find the child dentry by its name.
923 If found, put the result fid into @fid. */
924 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
927 struct dentry *parent, *child;
929 parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
930 child = d_lookup(parent, name);
933 *fid = *ll_inode2fid(child->d_inode);
938 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
939 struct dentry *dchild, struct qstr *name)
941 struct ptlrpc_request *request = NULL;
942 struct md_op_data *op_data;
946 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
947 name->len, name->name, dir->i_ino, dir->i_generation, dir);
949 if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
952 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
953 S_IFDIR, LUSTRE_OPC_ANY, NULL);
955 RETURN(PTR_ERR(op_data));
957 ll_get_child_fid(dir, name, &op_data->op_fid3);
958 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
959 ll_finish_md_op_data(op_data);
961 ll_update_times(request, dir);
962 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
965 ptlrpc_req_finished(request);
969 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
971 struct mdt_body *body;
972 struct lov_mds_md *eadata;
973 struct lov_stripe_md *lsm = NULL;
974 struct obd_trans_info oti = { 0 };
976 struct obd_capa *oc = NULL;
980 /* req is swabbed so this is safe */
981 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
982 if (!(body->valid & OBD_MD_FLEASIZE))
985 if (body->eadatasize == 0) {
986 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
987 GOTO(out, rc = -EPROTO);
990 /* The MDS sent back the EA because we unlinked the last reference
991 * to this file. Use this EA to unlink the objects on the OST.
992 * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
993 * check it is complete and sensible. */
994 eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
996 LASSERT(eadata != NULL);
998 rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1000 CERROR("obd_unpackmd: %d\n", rc);
1003 LASSERT(rc >= sizeof(*lsm));
1007 GOTO(out_free_memmd, rc = -ENOMEM);
1009 oa->o_id = lsm->lsm_object_id;
1010 oa->o_seq = lsm->lsm_object_seq;
1011 oa->o_mode = body->mode & S_IFMT;
1012 oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1014 if (body->valid & OBD_MD_FLCOOKIE) {
1015 oa->o_valid |= OBD_MD_FLCOOKIE;
1016 oti.oti_logcookies =
1017 req_capsule_server_sized_get(&request->rq_pill,
1019 sizeof(struct llog_cookie) *
1020 lsm->lsm_stripe_count);
1021 if (oti.oti_logcookies == NULL) {
1022 oa->o_valid &= ~OBD_MD_FLCOOKIE;
1023 body->valid &= ~OBD_MD_FLCOOKIE;
1027 if (body->valid & OBD_MD_FLOSSCAPA) {
1028 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1030 GOTO(out_free_memmd, rc);
1033 rc = obd_destroy(NULL, ll_i2dtexp(dir), oa, lsm, &oti,
1034 ll_i2mdexp(dir), oc);
1038 CERROR("obd destroy objid "LPX64" error %d\n",
1039 lsm->lsm_object_id, rc);
1041 obd_free_memmd(ll_i2dtexp(dir), &lsm);
1046 /* ll_unlink_generic() doesn't update the inode with the new link count.
1047 * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1048 * is any lock existing. They will recycle dentries and inodes based upon locks
1050 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1051 struct dentry *dchild, struct qstr *name)
1053 struct ptlrpc_request *request = NULL;
1054 struct md_op_data *op_data;
1057 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1058 name->len, name->name, dir->i_ino, dir->i_generation, dir);
1061 * XXX: unlink bind mountpoint maybe call to here,
1062 * just check it as vfs_unlink does.
1064 if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1067 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1068 name->len, 0, LUSTRE_OPC_ANY, NULL);
1069 if (IS_ERR(op_data))
1070 RETURN(PTR_ERR(op_data));
1072 ll_get_child_fid(dir, name, &op_data->op_fid3);
1073 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1074 ll_finish_md_op_data(op_data);
1078 ll_update_times(request, dir);
1079 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
1081 rc = ll_objects_destroy(request, dir);
1083 ptlrpc_req_finished(request);
1087 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1088 struct dentry *src_dchild, struct qstr *src_name,
1089 struct inode *tgt, struct dentry *tgt_dparent,
1090 struct dentry *tgt_dchild, struct qstr *tgt_name)
1092 struct ptlrpc_request *request = NULL;
1093 struct ll_sb_info *sbi = ll_i2sbi(src);
1094 struct md_op_data *op_data;
1097 CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1098 "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1099 src->i_ino, src->i_generation, src, tgt_name->len,
1100 tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1102 if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1103 ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1106 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1107 LUSTRE_OPC_ANY, NULL);
1108 if (IS_ERR(op_data))
1109 RETURN(PTR_ERR(op_data));
1111 ll_get_child_fid(src, src_name, &op_data->op_fid3);
1112 ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1113 err = md_rename(sbi->ll_md_exp, op_data,
1114 src_name->name, src_name->len,
1115 tgt_name->name, tgt_name->len, &request);
1116 ll_finish_md_op_data(op_data);
1118 ll_update_times(request, src);
1119 ll_update_times(request, tgt);
1120 ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
1121 err = ll_objects_destroy(request, src);
1124 ptlrpc_req_finished(request);
1129 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1132 return ll_mknod_generic(dir, &dchild->d_name, mode,
1133 old_encode_dev(rdev), dchild);
1136 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1138 return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1140 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1142 return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1144 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1146 return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1148 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1149 const char *oldname)
1151 return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1153 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1154 struct dentry *new_dentry)
1156 return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1159 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1160 struct inode *new_dir, struct dentry *new_dentry)
1163 err = ll_rename_generic(old_dir, NULL,
1164 old_dentry, &old_dentry->d_name,
1165 new_dir, NULL, new_dentry,
1166 &new_dentry->d_name);
1168 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1169 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1171 d_move(old_dentry, new_dentry);
1176 struct inode_operations ll_dir_inode_operations = {
1178 .lookup = ll_lookup_nd,
1179 .create = ll_create_nd,
1180 /* We need all these non-raw things for NFSD, to not patch it. */
1181 .unlink = ll_unlink,
1184 .symlink = ll_symlink,
1186 .rename = ll_rename,
1187 .setattr = ll_setattr,
1188 .getattr = ll_getattr,
1189 .permission = ll_inode_permission,
1190 .setxattr = ll_setxattr,
1191 .getxattr = ll_getxattr,
1192 .listxattr = ll_listxattr,
1193 .removexattr = ll_removexattr,
1196 struct inode_operations ll_special_inode_operations = {
1197 .setattr = ll_setattr,
1198 .getattr = ll_getattr,
1199 .permission = ll_inode_permission,
1200 .setxattr = ll_setxattr,
1201 .getxattr = ll_getxattr,
1202 .listxattr = ll_listxattr,
1203 .removexattr = ll_removexattr,