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, 2015, 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>
41 #define DEBUG_SUBSYSTEM S_LLITE
43 #include "../include/obd_support.h"
44 #include "../include/lustre_fid.h"
45 #include "../include/lustre_lite.h"
46 #include "../include/lustre_dlm.h"
47 #include "../include/lustre_ver.h"
48 #include "llite_internal.h"
50 static int ll_create_it(struct inode *, struct dentry *,
51 int, struct lookup_intent *);
53 /* called from iget5_locked->find_inode() under inode_hash_lock spinlock */
54 static int ll_test_inode(struct inode *inode, void *opaque)
56 struct ll_inode_info *lli = ll_i2info(inode);
57 struct lustre_md *md = opaque;
59 if (unlikely(!(md->body->mbo_valid & OBD_MD_FLID))) {
60 CERROR("MDS body missing FID\n");
64 if (!lu_fid_eq(&lli->lli_fid, &md->body->mbo_fid1))
70 static int ll_set_inode(struct inode *inode, void *opaque)
72 struct ll_inode_info *lli = ll_i2info(inode);
73 struct mdt_body *body = ((struct lustre_md *)opaque)->body;
75 if (unlikely(!(body->mbo_valid & OBD_MD_FLID))) {
76 CERROR("MDS body missing FID\n");
80 lli->lli_fid = body->mbo_fid1;
81 if (unlikely(!(body->mbo_valid & OBD_MD_FLTYPE))) {
82 CERROR("Can not initialize inode " DFID
83 " without object type: valid = %#llx\n",
84 PFID(&lli->lli_fid), body->mbo_valid);
88 inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mbo_mode & S_IFMT);
89 if (unlikely(inode->i_mode == 0)) {
90 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
100 * Get an inode by inode number(@hash), which is already instantiated by
101 * the intent lookup).
103 struct inode *ll_iget(struct super_block *sb, ino_t hash,
104 struct lustre_md *md)
110 inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
112 return ERR_PTR(-ENOMEM);
114 if (inode->i_state & I_NEW) {
115 rc = ll_read_inode2(inode, md);
116 if (!rc && S_ISREG(inode->i_mode) &&
117 !ll_i2info(inode)->lli_clob) {
118 CDEBUG(D_INODE, "%s: apply lsm %p to inode "DFID"\n",
119 ll_get_fsname(sb, NULL, 0), md->lsm,
120 PFID(ll_inode2fid(inode)));
121 rc = cl_file_inode_init(inode, md);
124 make_bad_inode(inode);
125 unlock_new_inode(inode);
129 unlock_new_inode(inode);
131 } else if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
132 rc = ll_update_inode(inode, md);
133 CDEBUG(D_VFSTRACE, "got inode: "DFID"(%p): rc = %d\n",
134 PFID(&md->body->mbo_fid1), inode, rc);
136 make_bad_inode(inode);
144 static void ll_invalidate_negative_children(struct inode *dir)
146 struct dentry *dentry, *tmp_subdir;
148 spin_lock(&dir->i_lock);
149 hlist_for_each_entry(dentry, &dir->i_dentry, d_u.d_alias) {
150 spin_lock(&dentry->d_lock);
151 if (!list_empty(&dentry->d_subdirs)) {
152 struct dentry *child;
154 list_for_each_entry_safe(child, tmp_subdir,
157 if (d_really_is_negative(child))
158 d_lustre_invalidate(child, 1);
161 spin_unlock(&dentry->d_lock);
163 spin_unlock(&dir->i_lock);
166 int ll_test_inode_by_fid(struct inode *inode, void *opaque)
168 return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
171 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
172 void *data, int flag)
174 struct lustre_handle lockh;
178 case LDLM_CB_BLOCKING:
179 ldlm_lock2handle(lock, &lockh);
180 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
182 CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
186 case LDLM_CB_CANCELING: {
187 struct inode *inode = ll_inode_from_resource_lock(lock);
188 __u64 bits = lock->l_policy_data.l_inodebits.bits;
190 /* Inode is set to lock->l_resource->lr_lvb_inode
191 * for mdc - bug 24555
193 LASSERT(!lock->l_ast_data);
198 /* Invalidate all dentries associated with this inode */
199 LASSERT(ldlm_is_canceling(lock));
201 if (!fid_res_name_eq(ll_inode2fid(inode),
202 &lock->l_resource->lr_name)) {
203 LDLM_ERROR(lock, "data mismatch with object "DFID"(%p)",
204 PFID(ll_inode2fid(inode)), inode);
208 if (bits & MDS_INODELOCK_XATTR) {
209 ll_xattr_cache_destroy(inode);
210 bits &= ~MDS_INODELOCK_XATTR;
213 /* For OPEN locks we differentiate between lock modes
214 * LCK_CR, LCK_CW, LCK_PR - bug 22891
216 if (bits & MDS_INODELOCK_OPEN)
217 ll_have_md_lock(inode, &bits, lock->l_req_mode);
219 if (bits & MDS_INODELOCK_OPEN) {
222 switch (lock->l_req_mode) {
233 LDLM_ERROR(lock, "bad lock mode for OPEN lock");
237 ll_md_real_close(inode, fmode);
240 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
241 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM))
242 ll_have_md_lock(inode, &bits, LCK_MINMODE);
244 if (bits & MDS_INODELOCK_LAYOUT) {
245 struct cl_object_conf conf = {
246 .coc_opc = OBJECT_CONF_INVALIDATE,
250 rc = ll_layout_conf(inode, &conf);
252 CDEBUG(D_INODE, "cannot invalidate layout of "
254 PFID(ll_inode2fid(inode)), rc);
257 if (bits & MDS_INODELOCK_UPDATE) {
258 struct ll_inode_info *lli = ll_i2info(inode);
260 spin_lock(&lli->lli_lock);
261 lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
262 spin_unlock(&lli->lli_lock);
265 if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
266 struct ll_inode_info *lli = ll_i2info(inode);
268 CDEBUG(D_INODE, "invalidating inode "DFID" lli = %p, pfid = "DFID"\n",
269 PFID(ll_inode2fid(inode)), lli,
270 PFID(&lli->lli_pfid));
272 truncate_inode_pages(inode->i_mapping, 0);
274 if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
275 struct inode *master_inode = NULL;
279 * This is slave inode, since all of the child
280 * dentry is connected on the master inode, so
281 * we have to invalidate the negative children
284 CDEBUG(D_INODE, "Invalidate s"DFID" m"DFID"\n",
285 PFID(ll_inode2fid(inode)),
286 PFID(&lli->lli_pfid));
288 hash = cl_fid_build_ino(&lli->lli_pfid,
289 ll_need_32bit_api(ll_i2sbi(inode)));
291 master_inode = ilookup5(inode->i_sb, hash,
292 ll_test_inode_by_fid,
293 (void *)&lli->lli_pfid);
294 if (master_inode && !IS_ERR(master_inode)) {
295 ll_invalidate_negative_children(master_inode);
299 ll_invalidate_negative_children(inode);
303 if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
304 inode->i_sb->s_root &&
305 !is_root_inode(inode))
306 ll_invalidate_aliases(inode);
318 __u32 ll_i2suppgid(struct inode *i)
320 if (in_group_p(i->i_gid))
321 return (__u32)from_kgid(&init_user_ns, i->i_gid);
326 /* Pack the required supplementary groups into the supplied groups array.
327 * If we don't need to use the groups from the target inode(s) then we
328 * instead pack one or more groups from the user's supplementary group
329 * array in case it might be useful. Not needed if doing an MDS-side upcall.
331 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
335 suppgids[0] = ll_i2suppgid(i1);
338 suppgids[1] = ll_i2suppgid(i2);
344 * try to reuse three types of dentry:
345 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
346 * by concurrent .revalidate).
347 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
348 * be cleared by others calling d_lustre_revalidate).
349 * 3. DISCONNECTED alias.
351 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
353 struct dentry *alias, *discon_alias, *invalid_alias;
355 if (hlist_empty(&inode->i_dentry))
359 invalid_alias = NULL;
361 spin_lock(&inode->i_lock);
362 hlist_for_each_entry(alias, &inode->i_dentry, d_u.d_alias) {
363 LASSERT(alias != dentry);
365 spin_lock(&alias->d_lock);
366 if ((alias->d_flags & DCACHE_DISCONNECTED) &&
367 S_ISDIR(inode->i_mode))
368 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
369 discon_alias = alias;
370 else if (alias->d_parent == dentry->d_parent &&
371 alias->d_name.hash == dentry->d_name.hash &&
372 alias->d_name.len == dentry->d_name.len &&
373 memcmp(alias->d_name.name, dentry->d_name.name,
374 dentry->d_name.len) == 0)
375 invalid_alias = alias;
376 spin_unlock(&alias->d_lock);
381 alias = invalid_alias ?: discon_alias ?: NULL;
383 spin_lock(&alias->d_lock);
385 spin_unlock(&alias->d_lock);
387 spin_unlock(&inode->i_lock);
393 * Similar to d_splice_alias(), but lustre treats invalid alias
394 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
396 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
402 new = ll_find_alias(inode, de);
412 "Reuse dentry %p inode %p refc %d flags %#x\n",
413 new, d_inode(new), d_count(new), new->d_flags);
421 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
422 de, d_inode(de), d_count(de), de->d_flags);
426 static int ll_lookup_it_finish(struct ptlrpc_request *request,
427 struct lookup_intent *it,
428 struct inode *parent, struct dentry **de)
430 struct inode *inode = NULL;
433 struct dentry *alias;
435 /* NB 1 request reference will be taken away by ll_intent_lock()
438 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
440 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
441 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
445 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
447 /* We used to query real size from OSTs here, but actually
448 * this is not needed. For stat() calls size would be updated
449 * from subsequent do_revalidate()->ll_inode_revalidate_it() in
451 * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
452 * Everybody else who needs correct file size would call
453 * ll_glimpse_size or some equivalent themselves anyway.
458 alias = ll_splice_alias(inode, *de);
465 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
466 /* we have lookup look - unhide dentry */
467 if (bits & MDS_INODELOCK_LOOKUP)
468 d_lustre_revalidate(*de);
469 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
470 /* If file created on server, don't depend on parent UPDATE
471 * lock to unhide it. It is left hidden and next lookup can
472 * find it in ll_splice_alias.
474 /* Check that parent has UPDATE lock. */
475 struct lookup_intent parent_it = {
477 .it_lock_handle = 0 };
478 struct lu_fid fid = ll_i2info(parent)->lli_fid;
480 /* If it is striped directory, get the real stripe parent */
481 if (unlikely(ll_i2info(parent)->lli_lsm_md)) {
482 rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
483 ll_i2info(parent)->lli_lsm_md,
485 (*de)->d_name.len, &fid);
490 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
492 d_lustre_revalidate(*de);
493 ll_intent_release(&parent_it);
498 if (rc != 0 && it->it_op & IT_OPEN)
499 ll_open_cleanup((*de)->d_sb, request);
504 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
505 struct lookup_intent *it, int lookup_flags)
507 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
508 struct dentry *save = dentry, *retval;
509 struct ptlrpc_request *req = NULL;
511 struct md_op_data *op_data;
515 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
516 return ERR_PTR(-ENAMETOOLONG);
518 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p),intent=%s\n",
519 dentry, PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
521 if (d_mountpoint(dentry))
522 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
524 if (!it || it->it_op == IT_GETXATTR)
527 if (it->it_op == IT_GETATTR) {
528 rc = ll_statahead_enter(parent, &dentry, 0);
538 if (it->it_op & IT_CREAT)
539 opc = LUSTRE_OPC_CREATE;
541 opc = LUSTRE_OPC_ANY;
543 op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
544 dentry->d_name.len, lookup_flags, opc,
547 return (void *)op_data;
549 /* enforce umask if acl disabled or MDS doesn't support umask */
550 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
551 it->it_create_mode &= ~current_umask();
553 rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
554 &ll_md_blocking_ast, 0);
555 ll_finish_md_op_data(op_data);
557 retval = ERR_PTR(rc);
561 rc = ll_lookup_it_finish(req, it, parent, &dentry);
563 ll_intent_release(it);
564 retval = ERR_PTR(rc);
568 inode = d_inode(dentry);
569 if ((it->it_op & IT_OPEN) && inode &&
570 !S_ISREG(inode->i_mode) &&
571 !S_ISDIR(inode->i_mode)) {
572 ll_release_openhandle(inode, it);
574 ll_lookup_finish_locks(it, inode);
582 ptlrpc_req_finished(req);
583 if (it->it_op == IT_GETATTR && (!retval || retval == dentry))
584 ll_statahead_mark(parent, dentry);
588 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
591 struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
594 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p),flags=%u\n",
595 dentry, PFID(ll_inode2fid(parent)), parent, flags);
597 /* Optimize away (CREATE && !OPEN). Let .create handle the race.
598 * but only if we have write permissions there, otherwise we need
599 * to proceed with lookup. LU-4185
601 if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
602 (inode_permission(parent, MAY_WRITE | MAY_EXEC) == 0))
605 if (flags & (LOOKUP_PARENT | LOOKUP_OPEN | LOOKUP_CREATE))
609 de = ll_lookup_it(parent, dentry, itp, 0);
612 ll_intent_release(itp);
618 * For cached negative dentry and new dentry, handle lookup/create/open
621 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
622 struct file *file, unsigned open_flags,
623 umode_t mode, int *opened)
625 struct lookup_intent *it;
627 long long lookup_flags = LOOKUP_OPEN;
630 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p),file %p,open_flags %x,mode %x opened %d\n",
631 dentry, PFID(ll_inode2fid(dir)), dir, file, open_flags, mode,
634 /* Only negative dentries enter here */
635 LASSERT(!d_inode(dentry));
637 if (!d_in_lookup(dentry)) {
638 /* A valid negative dentry that just passed revalidation,
639 * there's little point to try and open it server-side,
640 * even though there's a minuscle chance it might succeed.
641 * Either way it's a valid race to just return -ENOENT here.
643 if (!(open_flags & O_CREAT))
646 /* Otherwise we just unhash it to be rehashed afresh via
647 * lookup if necessary
652 it = kzalloc(sizeof(*it), GFP_NOFS);
657 if (open_flags & O_CREAT) {
658 it->it_op |= IT_CREAT;
659 lookup_flags |= LOOKUP_CREATE;
661 it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
662 it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
663 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
665 /* Dentry added to dcache tree in ll_lookup_it */
666 de = ll_lookup_it(dir, dentry, it, lookup_flags);
673 if (it_disposition(it, DISP_OPEN_CREATE)) {
674 /* Dentry instantiated in ll_create_it. */
675 rc = ll_create_it(dir, dentry, mode, it);
677 /* We dget in ll_splice_alias. */
683 *opened |= FILE_CREATED;
685 if (d_really_is_positive(dentry) && it_disposition(it, DISP_OPEN_OPEN)) {
687 if (S_ISFIFO(d_inode(dentry)->i_mode)) {
688 /* We cannot call open here as it might
689 * deadlock. This case is unreachable in
690 * practice because of OBD_CONNECT_NODEVOH.
692 rc = finish_no_open(file, de);
694 file->private_data = it;
695 rc = finish_open(file, dentry, NULL, opened);
696 /* We dget in ll_splice_alias. finish_open takes
697 * care of dget for fd open.
703 rc = finish_no_open(file, de);
708 ll_intent_release(it);
714 /* We depend on "mode" being set with the proper file type/umask by now */
715 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
717 struct inode *inode = NULL;
718 struct ptlrpc_request *request = NULL;
719 struct ll_sb_info *sbi = ll_i2sbi(dir);
722 LASSERT(it && it->it_disposition);
724 LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
725 request = it->it_request;
726 it_clear_disposition(it, DISP_ENQ_CREATE_REF);
727 rc = ll_prep_inode(&inode, request, dir->i_sb, it);
733 LASSERT(hlist_empty(&inode->i_dentry));
735 /* We asked for a lock on the directory, but were granted a
736 * lock on the inode. Since we finally have an inode pointer,
737 * stuff it in the lock.
739 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
740 PFID(ll_inode2fid(dir)), inode);
741 ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
743 ptlrpc_req_finished(request);
748 * By the time this is called, we already have created the directory cache
749 * entry for the new file, but it is so far negative - it has no inode.
751 * We defer creating the OBD object(s) until open, to keep the intent and
752 * non-intent code paths similar, and also because we do not have the MDS
753 * inode number before calling ll_create_node() (which is needed for LOV),
754 * so we would need to do yet another RPC to the MDS to store the LOV EA
755 * data on the MDS. If needed, we would pass the PACKED lmm as data and
756 * lmm_size in datalen (the MDS still has code which will handle that).
758 * If the create succeeds, we fill in the inode information
759 * with d_instantiate().
761 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
762 struct lookup_intent *it)
767 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), intent=%s\n",
768 dentry, PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
770 rc = it_open_error(DISP_OPEN_CREATE, it);
774 inode = ll_create_node(dir, it);
776 return PTR_ERR(inode);
778 d_instantiate(dentry, inode);
782 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
784 struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
788 if (body->mbo_valid & OBD_MD_FLMTIME &&
789 body->mbo_mtime > LTIME_S(inode->i_mtime)) {
790 CDEBUG(D_INODE, "setting fid "DFID" mtime from %lu to %llu\n",
791 PFID(ll_inode2fid(inode)), LTIME_S(inode->i_mtime),
793 LTIME_S(inode->i_mtime) = body->mbo_mtime;
795 if (body->mbo_valid & OBD_MD_FLCTIME &&
796 body->mbo_ctime > LTIME_S(inode->i_ctime))
797 LTIME_S(inode->i_ctime) = body->mbo_ctime;
800 static int ll_new_node(struct inode *dir, struct dentry *dentry,
801 const char *tgt, int mode, int rdev,
804 struct ptlrpc_request *request = NULL;
805 struct md_op_data *op_data;
806 struct inode *inode = NULL;
807 struct ll_sb_info *sbi = ll_i2sbi(dir);
812 tgt_len = strlen(tgt) + 1;
814 op_data = ll_prep_md_op_data(NULL, dir, NULL,
818 if (IS_ERR(op_data)) {
819 err = PTR_ERR(op_data);
823 err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
824 from_kuid(&init_user_ns, current_fsuid()),
825 from_kgid(&init_user_ns, current_fsgid()),
826 cfs_curproc_cap_pack(), rdev, &request);
827 ll_finish_md_op_data(op_data);
831 ll_update_times(request, dir);
833 err = ll_prep_inode(&inode, request, dir->i_sb, NULL);
837 d_instantiate(dentry, inode);
839 ptlrpc_req_finished(request);
844 static int ll_mknod(struct inode *dir, struct dentry *dchild,
845 umode_t mode, dev_t rdev)
849 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p) mode %o dev %x\n",
850 dchild, PFID(ll_inode2fid(dir)), dir, mode,
851 old_encode_dev(rdev));
853 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
854 mode &= ~current_umask();
856 switch (mode & S_IFMT) {
858 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
864 err = ll_new_node(dir, dchild, NULL, mode,
865 old_encode_dev(rdev),
876 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD, 1);
882 * Plain create. Intent create is handled in atomic_open.
884 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
885 umode_t mode, bool want_excl)
889 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p), flags=%u, excl=%d\n",
890 dentry, PFID(ll_inode2fid(dir)), dir, mode, want_excl);
892 rc = ll_mknod(dir, dentry, mode, 0);
894 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
896 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, unhashed %d\n",
897 dentry, d_unhashed(dentry));
902 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
904 struct mdt_body *body;
905 struct lov_mds_md *eadata;
906 struct lov_stripe_md *lsm = NULL;
907 struct obd_trans_info oti = { 0 };
911 /* req is swabbed so this is safe */
912 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
913 if (!(body->mbo_valid & OBD_MD_FLEASIZE))
916 if (body->mbo_eadatasize == 0) {
917 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
922 /* The MDS sent back the EA because we unlinked the last reference
923 * to this file. Use this EA to unlink the objects on the OST.
924 * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
925 * check it is complete and sensible.
927 eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
928 body->mbo_eadatasize);
931 rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->mbo_eadatasize);
933 CERROR("obd_unpackmd: %d\n", rc);
936 LASSERT(rc >= sizeof(*lsm));
938 oa = kmem_cache_zalloc(obdo_cachep, GFP_NOFS);
944 oa->o_oi = lsm->lsm_oi;
945 oa->o_mode = body->mbo_mode & S_IFMT;
946 oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
948 if (body->mbo_valid & OBD_MD_FLCOOKIE) {
949 oa->o_valid |= OBD_MD_FLCOOKIE;
951 req_capsule_server_sized_get(&request->rq_pill,
953 sizeof(struct llog_cookie) *
954 lsm->lsm_stripe_count);
955 if (!oti.oti_logcookies) {
956 oa->o_valid &= ~OBD_MD_FLCOOKIE;
957 body->mbo_valid &= ~OBD_MD_FLCOOKIE;
961 rc = obd_destroy(NULL, ll_i2dtexp(dir), oa, lsm, &oti,
964 CERROR("obd destroy objid "DOSTID" error %d\n",
965 POSTID(&lsm->lsm_oi), rc);
967 obd_free_memmd(ll_i2dtexp(dir), &lsm);
968 kmem_cache_free(obdo_cachep, oa);
973 /* ll_unlink() doesn't update the inode with the new link count.
974 * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
975 * is any lock existing. They will recycle dentries and inodes based upon locks
978 static int ll_unlink(struct inode *dir, struct dentry *dchild)
980 struct ptlrpc_request *request = NULL;
981 struct md_op_data *op_data;
984 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd,dir=%lu/%u(%p)\n",
985 dchild, dir->i_ino, dir->i_generation, dir);
987 op_data = ll_prep_md_op_data(NULL, dir, NULL,
990 0, LUSTRE_OPC_ANY, NULL);
992 return PTR_ERR(op_data);
994 if (dchild && dchild->d_inode)
995 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
997 op_data->op_fid2 = op_data->op_fid3;
998 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
999 ll_finish_md_op_data(op_data);
1003 ll_update_times(request, dir);
1004 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
1006 rc = ll_objects_destroy(request, dir);
1008 ptlrpc_req_finished(request);
1012 static int ll_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
1016 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir"DFID"(%p)\n",
1017 dentry, PFID(ll_inode2fid(dir)), dir);
1019 if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1020 mode &= ~current_umask();
1021 mode = (mode & (S_IRWXUGO | S_ISVTX)) | S_IFDIR;
1022 err = ll_new_node(dir, dentry, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1025 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
1030 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1032 struct ptlrpc_request *request = NULL;
1033 struct md_op_data *op_data;
1036 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p)\n",
1037 dchild, PFID(ll_inode2fid(dir)), dir);
1039 op_data = ll_prep_md_op_data(NULL, dir, NULL,
1040 dchild->d_name.name,
1042 S_IFDIR, LUSTRE_OPC_ANY, NULL);
1043 if (IS_ERR(op_data))
1044 return PTR_ERR(op_data);
1046 if (dchild && dchild->d_inode)
1047 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1049 op_data->op_fid2 = op_data->op_fid3;
1050 rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1051 ll_finish_md_op_data(op_data);
1053 ll_update_times(request, dir);
1054 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
1057 ptlrpc_req_finished(request);
1061 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1062 const char *oldname)
1066 CDEBUG(D_VFSTRACE, "VFS Op:name=%pd, dir="DFID"(%p),target=%.*s\n",
1067 dentry, PFID(ll_inode2fid(dir)), dir, 3000, oldname);
1069 err = ll_new_node(dir, dentry, oldname, S_IFLNK | S_IRWXUGO,
1070 0, LUSTRE_OPC_SYMLINK);
1073 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
1078 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1079 struct dentry *new_dentry)
1081 struct inode *src = d_inode(old_dentry);
1082 struct ll_sb_info *sbi = ll_i2sbi(dir);
1083 struct ptlrpc_request *request = NULL;
1084 struct md_op_data *op_data;
1087 CDEBUG(D_VFSTRACE, "VFS Op: inode="DFID"(%p), dir="DFID"(%p), target=%pd\n",
1088 PFID(ll_inode2fid(src)), src, PFID(ll_inode2fid(dir)), dir,
1091 op_data = ll_prep_md_op_data(NULL, src, dir, new_dentry->d_name.name,
1092 new_dentry->d_name.len,
1093 0, LUSTRE_OPC_ANY, NULL);
1094 if (IS_ERR(op_data))
1095 return PTR_ERR(op_data);
1097 err = md_link(sbi->ll_md_exp, op_data, &request);
1098 ll_finish_md_op_data(op_data);
1102 ll_update_times(request, dir);
1103 ll_stats_ops_tally(sbi, LPROC_LL_LINK, 1);
1105 ptlrpc_req_finished(request);
1109 static int ll_rename(struct inode *src, struct dentry *src_dchild,
1110 struct inode *tgt, struct dentry *tgt_dchild)
1112 struct ptlrpc_request *request = NULL;
1113 struct ll_sb_info *sbi = ll_i2sbi(src);
1114 struct md_op_data *op_data;
1118 "VFS Op:oldname=%pd, src_dir="DFID"(%p), newname=%pd, tgt_dir="DFID"(%p)\n",
1119 src_dchild, PFID(ll_inode2fid(src)), src,
1120 tgt_dchild, PFID(ll_inode2fid(tgt)), tgt);
1122 op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1123 LUSTRE_OPC_ANY, NULL);
1124 if (IS_ERR(op_data))
1125 return PTR_ERR(op_data);
1127 if (src_dchild && src_dchild->d_inode)
1128 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1129 if (tgt_dchild && tgt_dchild->d_inode)
1130 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1132 err = md_rename(sbi->ll_md_exp, op_data,
1133 src_dchild->d_name.name,
1134 src_dchild->d_name.len,
1135 tgt_dchild->d_name.name,
1136 tgt_dchild->d_name.len, &request);
1137 ll_finish_md_op_data(op_data);
1139 ll_update_times(request, src);
1140 ll_update_times(request, tgt);
1141 ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
1142 err = ll_objects_destroy(request, src);
1145 ptlrpc_req_finished(request);
1147 d_move(src_dchild, tgt_dchild);
1151 const struct inode_operations ll_dir_inode_operations = {
1153 .atomic_open = ll_atomic_open,
1154 .lookup = ll_lookup_nd,
1155 .create = ll_create_nd,
1156 /* We need all these non-raw things for NFSD, to not patch it. */
1157 .unlink = ll_unlink,
1160 .symlink = ll_symlink,
1162 .rename = ll_rename,
1163 .setattr = ll_setattr,
1164 .getattr = ll_getattr,
1165 .permission = ll_inode_permission,
1166 .setxattr = generic_setxattr,
1167 .getxattr = generic_getxattr,
1168 .listxattr = ll_listxattr,
1169 .removexattr = generic_removexattr,
1170 .get_acl = ll_get_acl,
1173 const struct inode_operations ll_special_inode_operations = {
1174 .setattr = ll_setattr,
1175 .getattr = ll_getattr,
1176 .permission = ll_inode_permission,
1177 .setxattr = generic_setxattr,
1178 .getxattr = generic_getxattr,
1179 .listxattr = ll_listxattr,
1180 .removexattr = generic_removexattr,
1181 .get_acl = ll_get_acl,