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, 2014, Intel Corporation.
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/quotaops.h>
41 #include <linux/highmem.h>
42 #include <linux/pagemap.h>
43 #include <linux/security.h>
45 #define DEBUG_SUBSYSTEM S_LLITE
47 #include <obd_support.h>
48 #include <lustre_fid.h>
49 #include <lustre_dlm.h>
50 #include <lustre_ver.h>
51 #include "llite_internal.h"
53 static int ll_create_it(struct inode *dir, struct dentry *dentry,
54 struct lookup_intent *it);
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 CDEBUG(D_INODE, "%s: apply lsm %p to inode "DFID"\n",
125 ll_get_fsname(sb, NULL, 0), md->lsm,
126 PFID(ll_inode2fid(inode)));
127 rc = cl_file_inode_init(inode, md);
130 make_bad_inode(inode);
131 unlock_new_inode(inode);
135 unlock_new_inode(inode);
137 } else if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
138 rc = ll_update_inode(inode, md);
139 CDEBUG(D_VFSTRACE, "got inode: "DFID"(%p): rc = %d\n",
140 PFID(&md->body->mbo_fid1), inode, rc);
150 static void ll_invalidate_negative_children(struct inode *dir)
152 struct dentry *dentry, *tmp_subdir;
153 DECLARE_LL_D_HLIST_NODE_PTR(p);
156 ll_d_hlist_for_each_entry(dentry, p, &dir->i_dentry, d_alias) {
157 spin_lock(&dentry->d_lock);
158 if (!list_empty(&dentry->d_subdirs)) {
159 struct dentry *child;
161 list_for_each_entry_safe(child, tmp_subdir,
164 if (child->d_inode == NULL)
165 d_lustre_invalidate(child, 1);
168 spin_unlock(&dentry->d_lock);
170 ll_unlock_dcache(dir);
173 int ll_test_inode_by_fid(struct inode *inode, void *opaque)
175 return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
178 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
179 void *data, int flag)
181 struct lustre_handle lockh;
186 case LDLM_CB_BLOCKING:
187 ldlm_lock2handle(lock, &lockh);
188 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
190 CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
194 case LDLM_CB_CANCELING: {
195 struct inode *inode = ll_inode_from_resource_lock(lock);
196 __u64 bits = lock->l_policy_data.l_inodebits.bits;
198 /* Inode is set to lock->l_resource->lr_lvb_inode
199 * for mdc - bug 24555 */
200 LASSERT(lock->l_ast_data == NULL);
205 /* Invalidate all dentries associated with this inode */
206 LASSERT(ldlm_is_canceling(lock));
208 if (!fid_res_name_eq(ll_inode2fid(inode),
209 &lock->l_resource->lr_name)) {
210 LDLM_ERROR(lock, "data mismatch with object "DFID"(%p)",
211 PFID(ll_inode2fid(inode)), inode);
215 if (bits & MDS_INODELOCK_XATTR) {
216 ll_xattr_cache_destroy(inode);
217 bits &= ~MDS_INODELOCK_XATTR;
220 /* For OPEN locks we differentiate between lock modes
221 * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
222 if (bits & MDS_INODELOCK_OPEN)
223 ll_have_md_lock(inode, &bits, lock->l_req_mode);
225 if (bits & MDS_INODELOCK_OPEN) {
228 switch (lock->l_req_mode) {
239 LDLM_ERROR(lock, "bad lock mode for OPEN lock");
243 ll_md_real_close(inode, fmode);
245 bits &= ~MDS_INODELOCK_OPEN;
248 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
249 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM))
250 ll_have_md_lock(inode, &bits, LCK_MINMODE);
252 if (bits & MDS_INODELOCK_LAYOUT) {
253 struct cl_object_conf conf = {
254 .coc_opc = OBJECT_CONF_INVALIDATE,
258 rc = ll_layout_conf(inode, &conf);
260 CDEBUG(D_INODE, "cannot invalidate layout of "
262 PFID(ll_inode2fid(inode)), rc);
265 if (bits & MDS_INODELOCK_UPDATE) {
266 struct ll_inode_info *lli = ll_i2info(inode);
268 spin_lock(&lli->lli_lock);
269 lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
270 spin_unlock(&lli->lli_lock);
273 if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
274 struct ll_inode_info *lli = ll_i2info(inode);
276 CDEBUG(D_INODE, "invalidating inode "DFID" lli = %p, "
277 "pfid = "DFID"\n", PFID(ll_inode2fid(inode)),
278 lli, PFID(&lli->lli_pfid));
279 truncate_inode_pages(inode->i_mapping, 0);
281 if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
282 struct inode *master_inode = NULL;
285 /* This is slave inode, since all of the child
286 * dentry is connected on the master inode, so
287 * we have to invalidate the negative children
289 CDEBUG(D_INODE, "Invalidate s"DFID" m"DFID"\n",
290 PFID(ll_inode2fid(inode)),
291 PFID(&lli->lli_pfid));
293 hash = cl_fid_build_ino(&lli->lli_pfid,
294 ll_need_32bit_api(ll_i2sbi(inode)));
296 master_inode = ilookup5(inode->i_sb, hash,
297 ll_test_inode_by_fid,
298 (void *)&lli->lli_pfid);
299 if (master_inode != NULL &&
300 !IS_ERR(master_inode)) {
301 ll_invalidate_negative_children(
306 ll_invalidate_negative_children(inode);
310 if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
311 inode->i_sb->s_root != NULL &&
312 inode != inode->i_sb->s_root->d_inode)
313 ll_invalidate_aliases(inode);
325 __u32 ll_i2suppgid(struct inode *i)
327 if (in_group_p(i->i_gid))
328 return (__u32)from_kgid(&init_user_ns, i->i_gid);
330 return (__u32) __kgid_val(INVALID_GID);
333 /* Pack the required supplementary groups into the supplied groups array.
334 * If we don't need to use the groups from the target inode(s) then we
335 * instead pack one or more groups from the user's supplementary group
336 * array in case it might be useful. Not needed if doing an MDS-side upcall. */
337 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
340 LASSERT(suppgids != NULL);
342 suppgids[0] = ll_i2suppgid(i1);
345 suppgids[1] = ll_i2suppgid(i2);
351 * try to reuse three types of dentry:
352 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
353 * by concurrent .revalidate).
354 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
355 * be cleared by others calling d_lustre_revalidate).
356 * 3. DISCONNECTED alias.
358 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
360 struct dentry *alias, *discon_alias, *invalid_alias;
361 DECLARE_LL_D_HLIST_NODE_PTR(p);
363 if (ll_d_hlist_empty(&inode->i_dentry))
366 discon_alias = invalid_alias = NULL;
368 ll_lock_dcache(inode);
369 ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) {
370 LASSERT(alias != dentry);
372 spin_lock(&alias->d_lock);
373 if (alias->d_flags & DCACHE_DISCONNECTED)
374 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
375 discon_alias = alias;
376 else if (alias->d_parent == dentry->d_parent &&
377 alias->d_name.hash == dentry->d_name.hash &&
378 alias->d_name.len == dentry->d_name.len &&
379 memcmp(alias->d_name.name, dentry->d_name.name,
380 dentry->d_name.len) == 0)
381 invalid_alias = alias;
382 spin_unlock(&alias->d_lock);
387 alias = invalid_alias ?: discon_alias ?: NULL;
389 spin_lock(&alias->d_lock);
391 spin_unlock(&alias->d_lock);
393 ll_unlock_dcache(inode);
399 * Similar to d_splice_alias(), but lustre treats invalid alias
400 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
402 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
408 new = ll_find_alias(inode, de);
418 "Reuse dentry %p inode %p refc %d flags %#x\n",
419 new, new->d_inode, ll_d_count(new), new->d_flags);
427 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
428 de, de->d_inode, ll_d_count(de), de->d_flags);
432 static int ll_lookup_it_finish(struct ptlrpc_request *request,
433 struct lookup_intent *it,
434 struct inode *parent, struct dentry **de)
436 struct inode *inode = NULL;
441 /* NB 1 request reference will be taken away by ll_intent_lock()
443 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
444 it->d.lustre.it_disposition);
445 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
446 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
450 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
452 /* We used to query real size from OSTs here, but actually
453 this is not needed. For stat() calls size would be updated
454 from subsequent do_revalidate()->ll_inode_revalidate_it() in
456 vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
457 Everybody else who needs correct file size would call
458 ll_glimpse_size or some equivalent themselves anyway.
459 Also see bug 7198. */
462 /* Only hash *de if it is unhashed (new dentry).
463 * Atoimc_open may passin hashed dentries for open.
465 if (d_unhashed(*de)) {
466 struct dentry *alias;
468 alias = ll_splice_alias(inode, *de);
470 RETURN(PTR_ERR(alias));
472 } else if (!it_disposition(it, DISP_LOOKUP_NEG) &&
473 !it_disposition(it, DISP_OPEN_CREATE)) {
474 /* With DISP_OPEN_CREATE dentry will
475 instantiated in ll_create_it. */
476 LASSERT((*de)->d_inode == NULL);
477 d_instantiate(*de, inode);
480 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
481 /* we have lookup look - unhide dentry */
482 if (bits & MDS_INODELOCK_LOOKUP)
483 d_lustre_revalidate(*de);
484 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
485 /* If file created on server, don't depend on parent UPDATE
486 * lock to unhide it. It is left hidden and next lookup can
487 * find it in ll_splice_alias.
489 /* Check that parent has UPDATE lock. */
490 struct lookup_intent parent_it = {
492 .d.lustre.it_lock_handle = 0 };
493 struct lu_fid fid = ll_i2info(parent)->lli_fid;
495 /* If it is striped directory, get the real stripe parent */
496 if (unlikely(ll_i2info(parent)->lli_lsm_md != NULL)) {
497 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
498 ll_i2info(parent)->lli_lsm_md,
500 (*de)->d_name.len, &fid);
505 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
507 d_lustre_revalidate(*de);
508 ll_intent_release(&parent_it);
515 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
516 struct lookup_intent *it)
518 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
519 struct dentry *save = dentry, *retval;
520 struct ptlrpc_request *req = NULL;
521 struct md_op_data *op_data;
526 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
527 RETURN(ERR_PTR(-ENAMETOOLONG));
529 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
530 dentry->d_name.len, dentry->d_name.name,
531 PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
533 if (d_mountpoint(dentry))
534 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
536 if (it == NULL || it->it_op == IT_GETXATTR)
539 if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
540 rc = ll_statahead(parent, &dentry, 0);
542 RETURN(dentry == save ? NULL : dentry);
545 if (it->it_op & IT_CREAT)
546 opc = LUSTRE_OPC_CREATE;
548 opc = LUSTRE_OPC_ANY;
550 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
551 dentry->d_name.len, 0, opc, NULL);
553 RETURN((void *)op_data);
555 /* enforce umask if acl disabled or MDS doesn't support umask */
556 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
557 it->it_create_mode &= ~current_umask();
559 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
560 &ll_md_blocking_ast, 0);
561 ll_finish_md_op_data(op_data);
563 GOTO(out, retval = ERR_PTR(rc));
565 rc = ll_lookup_it_finish(req, it, parent, &dentry);
567 ll_intent_release(it);
568 GOTO(out, retval = ERR_PTR(rc));
571 if ((it->it_op & IT_OPEN) && dentry->d_inode &&
572 !S_ISREG(dentry->d_inode->i_mode) &&
573 !S_ISDIR(dentry->d_inode->i_mode)) {
574 ll_release_openhandle(dentry, it);
576 ll_lookup_finish_locks(it, dentry);
578 retval = (dentry == save) ? NULL : dentry;
582 ptlrpc_req_finished(req);
586 #ifdef HAVE_IOP_ATOMIC_OPEN
587 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
590 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
593 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), flags=%u\n",
594 dentry->d_name.len, dentry->d_name.name,
595 PFID(ll_inode2fid(parent)), parent, flags);
597 /* Optimize away (CREATE && !OPEN). Let .create handle the race. */
598 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN))
601 if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
605 de = ll_lookup_it(parent, dentry, itp);
608 ll_intent_release(itp);
614 * For cached negative dentry and new dentry, handle lookup/create/open
617 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
618 struct file *file, unsigned open_flags,
619 umode_t mode, int *opened)
621 struct lookup_intent *it;
623 long long lookup_flags = LOOKUP_OPEN;
627 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), file %p,"
628 "open_flags %x, mode %x opened %d\n",
629 dentry->d_name.len, dentry->d_name.name,
630 PFID(ll_inode2fid(dir)), dir, file, open_flags, mode, *opened);
632 OBD_ALLOC(it, sizeof(*it));
637 if (open_flags & O_CREAT) {
638 it->it_op |= IT_CREAT;
639 lookup_flags |= LOOKUP_CREATE;
641 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
642 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
643 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
645 /* Dentry added to dcache tree in ll_lookup_it */
646 de = ll_lookup_it(dir, dentry, it);
653 if (it_disposition(it, DISP_OPEN_CREATE)) {
654 /* Dentry instantiated in ll_create_it. */
655 rc = ll_create_it(dir, dentry, it);
657 /* We dget in ll_splice_alias. */
663 *opened |= FILE_CREATED;
665 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN)) {
667 if (S_ISFIFO(dentry->d_inode->i_mode)) {
668 /* We cannot call open here as it would
671 if (it_disposition(it, DISP_ENQ_OPEN_REF))
673 (struct ptlrpc_request *)
674 it->d.lustre.it_data);
675 rc = finish_no_open(file, de);
677 file->private_data = it;
678 rc = finish_open(file, dentry, NULL, opened);
679 /* We dget in ll_splice_alias. finish_open takes
680 * care of dget for fd open.
686 rc = finish_no_open(file, de);
691 ll_intent_release(it);
692 OBD_FREE(it, sizeof(*it));
697 #else /* !HAVE_IOP_ATOMIC_OPEN */
698 static struct lookup_intent *
699 ll_convert_intent(struct open_intent *oit, int lookup_flags)
701 struct lookup_intent *it;
705 return ERR_PTR(-ENOMEM);
707 if (lookup_flags & LOOKUP_OPEN) {
709 if (lookup_flags & LOOKUP_CREATE)
710 it->it_op |= IT_CREAT;
711 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
712 it->it_flags = ll_namei_to_lookup_intent_flag(oit->flags);
713 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
715 it->it_op = IT_GETATTR;
721 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
722 struct nameidata *nd)
727 if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
728 struct lookup_intent *it;
730 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
731 it = ll_d2d(dentry)->lld_it;
732 ll_d2d(dentry)->lld_it = NULL;
734 if ((nd->flags & LOOKUP_CREATE) &&
735 !(nd->flags & LOOKUP_OPEN))
738 it = ll_convert_intent(&nd->intent.open, nd->flags);
740 RETURN((struct dentry *)it);
743 de = ll_lookup_it(parent, dentry, it);
746 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
747 if (dentry->d_inode &&
748 it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
749 if (S_ISFIFO(dentry->d_inode->i_mode)) {
750 // We cannot call open here as it would
753 (struct ptlrpc_request *)
754 it->d.lustre.it_data);
758 nd->intent.open.file->private_data = it;
759 filp = lookup_instantiate_filp(nd,
765 de = (struct dentry *)filp;
768 } else if (it_disposition(it, DISP_OPEN_CREATE)) {
769 // XXX This can only reliably work on assumption
770 // that there are NO hashed negative dentries.
771 ll_d2d(dentry)->lld_it = it;
772 it = NULL; /* Will be freed in ll_create_nd */
773 /* We absolutely depend on ll_create_nd to be
774 * called to not leak this intent and possible
775 * data attached to it */
780 ll_intent_release(it);
781 OBD_FREE(it, sizeof(*it));
784 de = ll_lookup_it(parent, dentry, NULL);
789 #endif /* HAVE_IOP_ATOMIC_OPEN */
791 /* We depend on "mode" being set with the proper file type/umask by now */
792 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
794 struct inode *inode = NULL;
795 struct ptlrpc_request *request = NULL;
796 struct ll_sb_info *sbi = ll_i2sbi(dir);
800 LASSERT(it && it->d.lustre.it_disposition);
802 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
803 request = it->d.lustre.it_data;
804 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
805 rc = ll_prep_inode(&inode, request, dir->i_sb, it);
807 GOTO(out, inode = ERR_PTR(rc));
809 LASSERT(ll_d_hlist_empty(&inode->i_dentry));
811 /* We asked for a lock on the directory, but were granted a
812 * lock on the inode. Since we finally have an inode pointer,
813 * stuff it in the lock. */
814 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
815 PFID(ll_inode2fid(inode)), inode);
816 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
819 ptlrpc_req_finished(request);
824 * By the time this is called, we already have created the directory cache
825 * entry for the new file, but it is so far negative - it has no inode.
827 * We defer creating the OBD object(s) until open, to keep the intent and
828 * non-intent code paths similar, and also because we do not have the MDS
829 * inode number before calling ll_create_node() (which is needed for LOV),
830 * so we would need to do yet another RPC to the MDS to store the LOV EA
831 * data on the MDS. If needed, we would pass the PACKED lmm as data and
832 * lmm_size in datalen (the MDS still has code which will handle that).
834 * If the create succeeds, we fill in the inode information
835 * with d_instantiate().
837 static int ll_create_it(struct inode *dir, struct dentry *dentry,
838 struct lookup_intent *it)
844 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
845 dentry->d_name.len, dentry->d_name.name,
846 PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
848 rc = it_open_error(DISP_OPEN_CREATE, it);
852 inode = ll_create_node(dir, it);
854 RETURN(PTR_ERR(inode));
856 d_instantiate(dentry, inode);
860 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
862 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
866 if (body->mbo_valid & OBD_MD_FLMTIME &&
867 body->mbo_mtime > LTIME_S(inode->i_mtime)) {
868 CDEBUG(D_INODE, "setting fid "DFID" mtime from %lu to "LPU64
869 "\n", PFID(ll_inode2fid(inode)),
870 LTIME_S(inode->i_mtime), body->mbo_mtime);
871 LTIME_S(inode->i_mtime) = body->mbo_mtime;
874 if (body->mbo_valid & OBD_MD_FLCTIME &&
875 body->mbo_ctime > LTIME_S(inode->i_ctime))
876 LTIME_S(inode->i_ctime) = body->mbo_ctime;
879 static int ll_new_node(struct inode *dir, struct dentry *dchild,
880 const char *tgt, umode_t mode, int rdev, __u32 opc)
882 struct qstr *name = &dchild->d_name;
883 struct ptlrpc_request *request = NULL;
884 struct md_op_data *op_data;
885 struct inode *inode = NULL;
886 struct ll_sb_info *sbi = ll_i2sbi(dir);
891 if (unlikely(tgt != NULL))
892 tgt_len = strlen(tgt) + 1;
894 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
895 name->len, 0, opc, NULL);
897 GOTO(err_exit, err = PTR_ERR(op_data));
899 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
900 from_kuid(&init_user_ns, current_fsuid()),
901 from_kgid(&init_user_ns, current_fsgid()),
902 cfs_curproc_cap_pack(), rdev, &request);
903 ll_finish_md_op_data(op_data);
907 ll_update_times(request, dir);
909 err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
913 d_instantiate(dchild, inode);
917 ptlrpc_req_finished(request);
922 static int ll_mknod(struct inode *dir, struct dentry *dchild, ll_umode_t mode,
925 struct qstr *name = &dchild->d_name;
929 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p) mode %o dev %x\n",
930 name->len, name->name, PFID(ll_inode2fid(dir)), dir,
933 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
934 mode &= ~current_umask();
936 switch (mode & S_IFMT) {
938 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
944 err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
955 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD, 1);
960 #ifdef HAVE_IOP_ATOMIC_OPEN
962 * Plain create. Intent create is handled in atomic_open.
964 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
965 umode_t mode, bool want_excl)
969 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), "
970 "flags=%u, excl=%d\n", dentry->d_name.len,
971 dentry->d_name.name, PFID(ll_inode2fid(dir)),
972 dir, mode, want_excl);
974 rc = ll_mknod(dir, dentry, mode, 0);
976 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
978 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, unhashed %d\n",
979 dentry->d_name.len, dentry->d_name.name, d_unhashed(dentry));
983 #else /* !HAVE_IOP_ATOMIC_OPEN */
984 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
985 ll_umode_t mode, struct nameidata *nd)
987 struct ll_dentry_data *lld = ll_d2d(dentry);
988 struct lookup_intent *it = NULL;
995 return ll_mknod(dir, dentry, mode, 0);
999 /* Was there an error? Propagate it! */
1000 if (it->d.lustre.it_status) {
1001 rc = it->d.lustre.it_status;
1005 rc = ll_create_it(dir, dentry, it);
1006 if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
1009 nd->intent.open.file->private_data = it;
1010 filp = lookup_instantiate_filp(nd, dentry, NULL);
1016 ll_intent_release(it);
1017 OBD_FREE(it, sizeof(*it));
1020 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
1024 #endif /* HAVE_IOP_ATOMIC_OPEN */
1026 static int ll_symlink(struct inode *dir, struct dentry *dchild,
1027 const char *oldpath)
1029 struct qstr *name = &dchild->d_name;
1033 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), target=%.*s\n",
1034 name->len, name->name, PFID(ll_inode2fid(dir)),
1035 dir, 3000, oldpath);
1037 err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO, 0,
1038 LUSTRE_OPC_SYMLINK);
1041 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
1046 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1047 struct dentry *new_dentry)
1049 struct inode *src = old_dentry->d_inode;
1050 struct qstr *name = &new_dentry->d_name;
1051 struct ll_sb_info *sbi = ll_i2sbi(dir);
1052 struct ptlrpc_request *request = NULL;
1053 struct md_op_data *op_data;
1057 CDEBUG(D_VFSTRACE, "VFS Op: inode="DFID"(%p), dir="DFID"(%p), "
1058 "target=%.*s\n", PFID(ll_inode2fid(src)), src,
1059 PFID(ll_inode2fid(dir)), dir, name->len, name->name);
1061 op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
1062 0, LUSTRE_OPC_ANY, NULL);
1063 if (IS_ERR(op_data))
1064 RETURN(PTR_ERR(op_data));
1066 err = md_link(sbi->ll_md_exp, op_data, &request);
1067 ll_finish_md_op_data(op_data);
1071 ll_update_times(request, dir);
1072 ll_stats_ops_tally(sbi, LPROC_LL_LINK, 1);
1075 ptlrpc_req_finished(request);
1079 static int ll_mkdir(struct inode *dir, struct dentry *dchild, ll_umode_t mode)
1081 struct qstr *name = &dchild->d_name;
1085 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1086 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1088 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1089 mode &= ~current_umask();
1091 mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
1093 err = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1095 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
1100 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1102 struct qstr *name = &dchild->d_name;
1103 struct ptlrpc_request *request = NULL;
1104 struct md_op_data *op_data;
1108 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1109 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1111 if (unlikely(d_mountpoint(dchild)))
1114 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1115 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1116 if (IS_ERR(op_data))
1117 RETURN(PTR_ERR(op_data));
1119 if (dchild->d_inode != NULL)
1120 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1122 op_data->op_fid2 = op_data->op_fid3;
1123 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1124 ll_finish_md_op_data(op_data);
1126 ll_update_times(request, dir);
1127 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
1130 ptlrpc_req_finished(request);
1137 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
1139 struct ptlrpc_request *request = NULL;
1140 struct md_op_data *op_data;
1144 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1145 namelen, name, PFID(ll_inode2fid(dir)), dir);
1147 op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
1148 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1149 if (IS_ERR(op_data))
1150 RETURN(PTR_ERR(op_data));
1151 op_data->op_cli_flags |= CLI_RM_ENTRY;
1152 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1153 ll_finish_md_op_data(op_data);
1155 ll_update_times(request, dir);
1156 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
1159 ptlrpc_req_finished(request);
1163 /* ll_unlink() doesn't update the inode with the new link count.
1164 * Instead, ll_ddelete() and ll_d_iput() will update it based upon if
1165 * there is any lock existing. They will recycle dentries and inodes
1166 * based upon locks too. b=20433 */
1167 static int ll_unlink(struct inode *dir, struct dentry *dchild)
1169 struct qstr *name = &dchild->d_name;
1170 struct ptlrpc_request *request = NULL;
1171 struct md_op_data *op_data;
1174 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1175 name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1178 * XXX: unlink bind mountpoint maybe call to here,
1179 * just check it as vfs_unlink does.
1181 if (unlikely(d_mountpoint(dchild)))
1184 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
1185 LUSTRE_OPC_ANY, NULL);
1186 if (IS_ERR(op_data))
1187 RETURN(PTR_ERR(op_data));
1189 if (dchild->d_inode != NULL)
1190 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1192 op_data->op_fid2 = op_data->op_fid3;
1193 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1194 ll_finish_md_op_data(op_data);
1198 ll_update_times(request, dir);
1199 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
1202 ptlrpc_req_finished(request);
1206 static int ll_rename(struct inode *src, struct dentry *src_dchild,
1207 struct inode *tgt, struct dentry *tgt_dchild)
1209 struct qstr *src_name = &src_dchild->d_name;
1210 struct qstr *tgt_name = &tgt_dchild->d_name;
1211 struct ptlrpc_request *request = NULL;
1212 struct ll_sb_info *sbi = ll_i2sbi(src);
1213 struct md_op_data *op_data;
1216 CDEBUG(D_VFSTRACE, "VFS Op:oldname=%.*s, src_dir="DFID
1217 "(%p), newname=%.*s, tgt_dir="DFID"(%p)\n",
1218 src_name->len, src_name->name,
1219 PFID(ll_inode2fid(src)), src, tgt_name->len,
1220 tgt_name->name, PFID(ll_inode2fid(tgt)), tgt);
1222 if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
1225 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1226 LUSTRE_OPC_ANY, NULL);
1227 if (IS_ERR(op_data))
1228 RETURN(PTR_ERR(op_data));
1230 if (src_dchild->d_inode != NULL)
1231 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1233 if (tgt_dchild->d_inode != NULL)
1234 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1236 err = md_rename(sbi->ll_md_exp, op_data,
1237 src_name->name, src_name->len,
1238 tgt_name->name, tgt_name->len, &request);
1239 ll_finish_md_op_data(op_data);
1241 ll_update_times(request, src);
1242 ll_update_times(request, tgt);
1243 ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
1246 ptlrpc_req_finished(request);
1249 d_move(src_dchild, tgt_dchild);
1254 const struct inode_operations ll_dir_inode_operations = {
1256 #ifdef HAVE_IOP_ATOMIC_OPEN
1257 .atomic_open = ll_atomic_open,
1259 .lookup = ll_lookup_nd,
1260 .create = ll_create_nd,
1261 /* We need all these non-raw things for NFSD, to not patch it. */
1262 .unlink = ll_unlink,
1265 .symlink = ll_symlink,
1267 .rename = ll_rename,
1268 .setattr = ll_setattr,
1269 .getattr = ll_getattr,
1270 .permission = ll_inode_permission,
1271 .setxattr = ll_setxattr,
1272 .getxattr = ll_getxattr,
1273 .listxattr = ll_listxattr,
1274 .removexattr = ll_removexattr,
1275 #ifdef HAVE_IOP_GET_ACL
1276 .get_acl = ll_get_acl,
1280 const struct inode_operations ll_special_inode_operations = {
1281 .setattr = ll_setattr,
1282 .getattr = ll_getattr,
1283 .permission = ll_inode_permission,
1284 .setxattr = ll_setxattr,
1285 .getxattr = ll_getxattr,
1286 .listxattr = ll_listxattr,
1287 .removexattr = ll_removexattr,
1288 #ifdef HAVE_IOP_GET_ACL
1289 .get_acl = ll_get_acl,