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LU-2675 llite: remove generic operations from llite/namei.c
[fs/lustre-release.git] / lustre / llite / namei.c
1 /*
2  * GPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
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.
9  *
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).
15  *
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
19  *
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
22  * have any questions.
23  *
24  * GPL HEADER END
25  */
26 /*
27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28  * Use is subject to license terms.
29  *
30  * Copyright (c) 2011, 2013, Intel Corporation.
31  */
32 /*
33  * This file is part of Lustre, http://www.lustre.org/
34  * Lustre is a trademark of Sun Microsystems, Inc.
35  */
36
37 #include <linux/fs.h>
38 #include <linux/sched.h>
39 #include <linux/mm.h>
40 #include <linux/quotaops.h>
41 #include <linux/highmem.h>
42 #include <linux/pagemap.h>
43 #include <linux/security.h>
44
45 #define DEBUG_SUBSYSTEM S_LLITE
46
47 #include <obd_support.h>
48 #include <lustre_fid.h>
49 #include <lustre_lite.h>
50 #include <lustre_dlm.h>
51 #include <lustre_ver.h>
52 #include "llite_internal.h"
53
54 static int ll_create_it(struct inode *dir, struct dentry *dentry,
55                         struct lookup_intent *it);
56
57 /* called from iget5_locked->find_inode() under inode_lock spinlock */
58 static int ll_test_inode(struct inode *inode, void *opaque)
59 {
60         struct ll_inode_info    *lli = ll_i2info(inode);
61         struct lustre_md        *md = opaque;
62
63         if (unlikely(!(md->body->mbo_valid & OBD_MD_FLID))) {
64                 CERROR("MDS body missing FID\n");
65                 return 0;
66         }
67
68         if (!lu_fid_eq(&lli->lli_fid, &md->body->mbo_fid1))
69                 return 0;
70
71         return 1;
72 }
73
74 static int ll_set_inode(struct inode *inode, void *opaque)
75 {
76         struct ll_inode_info *lli = ll_i2info(inode);
77         struct mdt_body *body = ((struct lustre_md *)opaque)->body;
78
79         if (unlikely(!(body->mbo_valid & OBD_MD_FLID))) {
80                 CERROR("MDS body missing FID\n");
81                 return -EINVAL;
82         }
83
84         lli->lli_fid = body->mbo_fid1;
85         if (unlikely(!(body->mbo_valid & OBD_MD_FLTYPE))) {
86                 CERROR("Can not initialize inode "DFID" without object type: "
87                        "valid = "LPX64"\n",
88                        PFID(&lli->lli_fid), body->mbo_valid);
89                 return -EINVAL;
90         }
91
92         inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mbo_mode & S_IFMT);
93         if (unlikely(inode->i_mode == 0)) {
94                 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
95                 return -EINVAL;
96         }
97
98         ll_lli_init(lli);
99
100         return 0;
101 }
102
103
104 /**
105  * Get an inode by inode number(@hash), which is already instantiated by
106  * the intent lookup).
107  */
108 struct inode *ll_iget(struct super_block *sb, ino_t hash,
109                       struct lustre_md *md)
110 {
111         struct inode    *inode;
112         int             rc = 0;
113
114         ENTRY;
115
116         LASSERT(hash != 0);
117         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
118         if (inode == NULL)
119                 RETURN(ERR_PTR(-ENOMEM));
120
121         if (inode->i_state & I_NEW) {
122                 rc = ll_read_inode2(inode, md);
123                 if (rc == 0 && S_ISREG(inode->i_mode) &&
124                     ll_i2info(inode)->lli_clob == NULL) {
125                         CDEBUG(D_INODE, "%s: apply lsm %p to inode "DFID"\n",
126                                 ll_get_fsname(sb, NULL, 0), md->lsm,
127                                 PFID(ll_inode2fid(inode)));
128                         rc = cl_file_inode_init(inode, md);
129                 }
130                 if (rc != 0) {
131                         make_bad_inode(inode);
132                         unlock_new_inode(inode);
133                         iput(inode);
134                         inode = ERR_PTR(rc);
135                 } else {
136                         unlock_new_inode(inode);
137                 }
138         } else if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
139                 rc = ll_update_inode(inode, md);
140                 CDEBUG(D_VFSTRACE, "got inode: "DFID"(%p): rc = %d\n",
141                        PFID(&md->body->mbo_fid1), inode, rc);
142                 if (rc != 0) {
143                         make_bad_inode(inode);
144                         iput(inode);
145                         inode = ERR_PTR(rc);
146                 }
147         }
148
149         RETURN(inode);
150 }
151
152 static void ll_invalidate_negative_children(struct inode *dir)
153 {
154         struct dentry *dentry, *tmp_subdir;
155         DECLARE_LL_D_HLIST_NODE_PTR(p);
156
157         ll_lock_dcache(dir);
158         ll_d_hlist_for_each_entry(dentry, p, &dir->i_dentry, d_alias) {
159                 spin_lock(&dentry->d_lock);
160                 if (!list_empty(&dentry->d_subdirs)) {
161                         struct dentry *child;
162
163                         list_for_each_entry_safe(child, tmp_subdir,
164                                                  &dentry->d_subdirs,
165                                                  d_u.d_child) {
166                                 if (child->d_inode == NULL)
167                                         d_lustre_invalidate(child, 1);
168                         }
169                 }
170                 spin_unlock(&dentry->d_lock);
171         }
172         ll_unlock_dcache(dir);
173 }
174
175 int ll_test_inode_by_fid(struct inode *inode, void *opaque)
176 {
177         return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
178 }
179
180 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
181                        void *data, int flag)
182 {
183         struct lustre_handle lockh;
184         int rc;
185         ENTRY;
186
187         switch (flag) {
188         case LDLM_CB_BLOCKING:
189                 ldlm_lock2handle(lock, &lockh);
190                 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
191                 if (rc < 0) {
192                         CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
193                         RETURN(rc);
194                 }
195                 break;
196         case LDLM_CB_CANCELING: {
197                 struct inode *inode = ll_inode_from_resource_lock(lock);
198                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
199
200                 /* Inode is set to lock->l_resource->lr_lvb_inode
201                  * for mdc - bug 24555 */
202                 LASSERT(lock->l_ast_data == NULL);
203
204                 if (inode == NULL)
205                         break;
206
207                 /* Invalidate all dentries associated with this inode */
208                 LASSERT(ldlm_is_canceling(lock));
209
210                 if (!fid_res_name_eq(ll_inode2fid(inode),
211                                      &lock->l_resource->lr_name)) {
212                         LDLM_ERROR(lock, "data mismatch with object "DFID"(%p)",
213                                    PFID(ll_inode2fid(inode)), inode);
214                         LBUG();
215                 }
216
217                 if (bits & MDS_INODELOCK_XATTR) {
218                         ll_xattr_cache_destroy(inode);
219                         bits &= ~MDS_INODELOCK_XATTR;
220                 }
221
222                 /* For OPEN locks we differentiate between lock modes
223                  * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
224                 if (bits & MDS_INODELOCK_OPEN)
225                         ll_have_md_lock(inode, &bits, lock->l_req_mode);
226
227                 if (bits & MDS_INODELOCK_OPEN) {
228                         fmode_t fmode;
229
230                         switch (lock->l_req_mode) {
231                         case LCK_CW:
232                                 fmode = FMODE_WRITE;
233                                 break;
234                         case LCK_PR:
235                                 fmode = FMODE_EXEC;
236                                 break;
237                         case LCK_CR:
238                                 fmode = FMODE_READ;
239                                 break;
240                         default:
241                                 LDLM_ERROR(lock, "bad lock mode for OPEN lock");
242                                 LBUG();
243                         }
244
245                         ll_md_real_close(inode, fmode);
246
247                         bits &= ~MDS_INODELOCK_OPEN;
248                 }
249
250                 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
251                             MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM))
252                         ll_have_md_lock(inode, &bits, LCK_MINMODE);
253
254                 if (bits & MDS_INODELOCK_LAYOUT) {
255                         struct cl_object_conf conf = {
256                                 .coc_opc = OBJECT_CONF_INVALIDATE,
257                                 .coc_inode = inode,
258                         };
259
260                         rc = ll_layout_conf(inode, &conf);
261                         if (rc < 0)
262                                 CDEBUG(D_INODE, "cannot invalidate layout of "
263                                        DFID": rc = %d\n",
264                                        PFID(ll_inode2fid(inode)), rc);
265                 }
266
267                 if (bits & MDS_INODELOCK_UPDATE) {
268                         struct ll_inode_info *lli = ll_i2info(inode);
269
270                         spin_lock(&lli->lli_lock);
271                         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
272                         spin_unlock(&lli->lli_lock);
273                 }
274
275                 if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
276                         struct ll_inode_info *lli = ll_i2info(inode);
277
278                         CDEBUG(D_INODE, "invalidating inode "DFID" lli = %p, "
279                                "pfid  = "DFID"\n", PFID(ll_inode2fid(inode)),
280                                lli, PFID(&lli->lli_pfid));
281                         truncate_inode_pages(inode->i_mapping, 0);
282
283                         if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
284                                 struct inode *master_inode = NULL;
285                                 unsigned long hash;
286
287                                 /* This is slave inode, since all of the child
288                                  * dentry is connected on the master inode, so
289                                  * we have to invalidate the negative children
290                                  * on master inode */
291                                 CDEBUG(D_INODE, "Invalidate s"DFID" m"DFID"\n",
292                                        PFID(ll_inode2fid(inode)),
293                                        PFID(&lli->lli_pfid));
294
295                                 hash = cl_fid_build_ino(&lli->lli_pfid,
296                                         ll_need_32bit_api(ll_i2sbi(inode)));
297
298                                 master_inode = ilookup5(inode->i_sb, hash,
299                                                         ll_test_inode_by_fid,
300                                                         (void *)&lli->lli_pfid);
301                                 if (master_inode != NULL &&
302                                         !IS_ERR(master_inode)) {
303                                         ll_invalidate_negative_children(
304                                                                 master_inode);
305                                         iput(master_inode);
306                                 }
307                         } else {
308                                 ll_invalidate_negative_children(inode);
309                         }
310                 }
311
312                 if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
313                     inode->i_sb->s_root != NULL &&
314                     inode != inode->i_sb->s_root->d_inode)
315                         ll_invalidate_aliases(inode);
316
317                 iput(inode);
318                 break;
319         }
320         default:
321                 LBUG();
322         }
323
324         RETURN(0);
325 }
326
327 __u32 ll_i2suppgid(struct inode *i)
328 {
329         if (in_group_p(i->i_gid))
330                 return (__u32)from_kgid(&init_user_ns, i->i_gid);
331         else
332                 return (__u32) __kgid_val(INVALID_GID);
333 }
334
335 /* Pack the required supplementary groups into the supplied groups array.
336  * If we don't need to use the groups from the target inode(s) then we
337  * instead pack one or more groups from the user's supplementary group
338  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
339 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
340 {
341         LASSERT(i1 != NULL);
342         LASSERT(suppgids != NULL);
343
344         suppgids[0] = ll_i2suppgid(i1);
345
346         if (i2)
347                 suppgids[1] = ll_i2suppgid(i2);
348         else
349                 suppgids[1] = -1;
350 }
351
352 /*
353  * try to reuse three types of dentry:
354  * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
355  *    by concurrent .revalidate).
356  * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
357  *    be cleared by others calling d_lustre_revalidate).
358  * 3. DISCONNECTED alias.
359  */
360 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
361 {
362         struct dentry *alias, *discon_alias, *invalid_alias;
363         DECLARE_LL_D_HLIST_NODE_PTR(p);
364
365         if (ll_d_hlist_empty(&inode->i_dentry))
366                 return NULL;
367
368         discon_alias = invalid_alias = NULL;
369
370         ll_lock_dcache(inode);
371         ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) {
372                 LASSERT(alias != dentry);
373
374                 spin_lock(&alias->d_lock);
375                 if (alias->d_flags & DCACHE_DISCONNECTED)
376                         /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
377                         discon_alias = alias;
378                 else if (alias->d_parent == dentry->d_parent             &&
379                          alias->d_name.hash == dentry->d_name.hash       &&
380                          alias->d_name.len == dentry->d_name.len         &&
381                          memcmp(alias->d_name.name, dentry->d_name.name,
382                                 dentry->d_name.len) == 0)
383                         invalid_alias = alias;
384                 spin_unlock(&alias->d_lock);
385
386                 if (invalid_alias)
387                         break;
388         }
389         alias = invalid_alias ?: discon_alias ?: NULL;
390         if (alias) {
391                 spin_lock(&alias->d_lock);
392                 dget_dlock(alias);
393                 spin_unlock(&alias->d_lock);
394         }
395         ll_unlock_dcache(inode);
396
397         return alias;
398 }
399
400 /*
401  * Similar to d_splice_alias(), but lustre treats invalid alias
402  * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
403  */
404 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
405 {
406         struct dentry *new;
407         int rc;
408
409         if (inode) {
410                 new = ll_find_alias(inode, de);
411                 if (new) {
412                         rc = ll_d_init(new);
413                         if (rc < 0) {
414                                 dput(new);
415                                 return ERR_PTR(rc);
416                         }
417                         d_move(new, de);
418                         iput(inode);
419                         CDEBUG(D_DENTRY,
420                                "Reuse dentry %p inode %p refc %d flags %#x\n",
421                               new, new->d_inode, ll_d_count(new), new->d_flags);
422                         return new;
423                 }
424         }
425         rc = ll_d_init(de);
426         if (rc < 0)
427                 return ERR_PTR(rc);
428         d_add(de, inode);
429         CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
430                de, de->d_inode, ll_d_count(de), de->d_flags);
431         return de;
432 }
433
434 static int ll_lookup_it_finish(struct ptlrpc_request *request,
435                                struct lookup_intent *it,
436                                struct inode *parent, struct dentry **de)
437 {
438         struct inode             *inode = NULL;
439         __u64                     bits = 0;
440         int                       rc;
441         ENTRY;
442
443         /* NB 1 request reference will be taken away by ll_intent_lock()
444          * when I return */
445         CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
446                it->d.lustre.it_disposition);
447         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
448                 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
449                 if (rc)
450                         RETURN(rc);
451
452                 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
453
454                 /* We used to query real size from OSTs here, but actually
455                    this is not needed. For stat() calls size would be updated
456                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
457                    2.4 and
458                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
459                    Everybody else who needs correct file size would call
460                    ll_glimpse_size or some equivalent themselves anyway.
461                    Also see bug 7198. */
462         }
463
464         /* Only hash *de if it is unhashed (new dentry).
465          * Atoimc_open may passin hashed dentries for open.
466          */
467         if (d_unhashed(*de)) {
468                 struct dentry *alias;
469
470                 alias = ll_splice_alias(inode, *de);
471                 if (IS_ERR(alias))
472                         RETURN(PTR_ERR(alias));
473                 *de = alias;
474         } else if (!it_disposition(it, DISP_LOOKUP_NEG)  &&
475                    !it_disposition(it, DISP_OPEN_CREATE)) {
476                 /* With DISP_OPEN_CREATE dentry will
477                    instantiated in ll_create_it. */
478                 LASSERT((*de)->d_inode == NULL);
479                 d_instantiate(*de, inode);
480         }
481
482         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
483                 /* we have lookup look - unhide dentry */
484                 if (bits & MDS_INODELOCK_LOOKUP)
485                         d_lustre_revalidate(*de);
486         } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
487                 /* If file created on server, don't depend on parent UPDATE
488                  * lock to unhide it. It is left hidden and next lookup can
489                  * find it in ll_splice_alias.
490                  */
491                 /* Check that parent has UPDATE lock. */
492                 struct lookup_intent parent_it = {
493                                         .it_op = IT_GETATTR,
494                                         .d.lustre.it_lock_handle = 0 };
495                 struct lu_fid   fid = ll_i2info(parent)->lli_fid;
496
497                 /* If it is striped directory, get the real stripe parent */
498                 if (unlikely(ll_i2info(parent)->lli_lsm_md != NULL)) {
499                         rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
500                                                  ll_i2info(parent)->lli_lsm_md,
501                                                  (*de)->d_name.name,
502                                                  (*de)->d_name.len, &fid);
503                         if (rc != 0)
504                                 RETURN(rc);
505                 }
506
507                 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
508                                        NULL)) {
509                         d_lustre_revalidate(*de);
510                         ll_intent_release(&parent_it);
511                 }
512         }
513
514         RETURN(0);
515 }
516
517 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
518                                    struct lookup_intent *it)
519 {
520         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
521         struct dentry *save = dentry, *retval;
522         struct ptlrpc_request *req = NULL;
523         struct md_op_data *op_data;
524         __u32 opc;
525         int rc;
526         ENTRY;
527
528         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
529                 RETURN(ERR_PTR(-ENAMETOOLONG));
530
531         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
532                dentry->d_name.len, dentry->d_name.name,
533                PFID(ll_inode2fid(parent)), parent, LL_IT2STR(it));
534
535         if (d_mountpoint(dentry))
536                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
537
538         if (it == NULL || it->it_op == IT_GETXATTR)
539                 it = &lookup_it;
540
541         if (it->it_op == IT_GETATTR) {
542                 rc = ll_statahead_enter(parent, &dentry, 0);
543                 if (rc == 1) {
544                         if (dentry == save)
545                                 GOTO(out, retval = NULL);
546                         GOTO(out, retval = dentry);
547                 }
548         }
549
550         if (it->it_op & IT_CREAT)
551                 opc = LUSTRE_OPC_CREATE;
552         else
553                 opc = LUSTRE_OPC_ANY;
554
555         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
556                                      dentry->d_name.len, 0, opc, NULL);
557         if (IS_ERR(op_data))
558                 RETURN((void *)op_data);
559
560         /* enforce umask if acl disabled or MDS doesn't support umask */
561         if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
562                 it->it_create_mode &= ~current_umask();
563
564         rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
565                             &ll_md_blocking_ast, 0);
566         ll_finish_md_op_data(op_data);
567         if (rc < 0)
568                 GOTO(out, retval = ERR_PTR(rc));
569
570         rc = ll_lookup_it_finish(req, it, parent, &dentry);
571         if (rc != 0) {
572                 ll_intent_release(it);
573                 GOTO(out, retval = ERR_PTR(rc));
574         }
575
576         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
577             !S_ISREG(dentry->d_inode->i_mode) &&
578             !S_ISDIR(dentry->d_inode->i_mode)) {
579                 ll_release_openhandle(dentry, it);
580         }
581         ll_lookup_finish_locks(it, dentry);
582
583         if (dentry == save)
584                 GOTO(out, retval = NULL);
585         else
586                 GOTO(out, retval = dentry);
587  out:
588         if (req)
589                 ptlrpc_req_finished(req);
590         if (it->it_op == IT_GETATTR && (retval == NULL || retval == dentry))
591                 ll_statahead_mark(parent, dentry);
592         return retval;
593 }
594
595 #ifdef HAVE_IOP_ATOMIC_OPEN
596 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
597                                    unsigned int flags)
598 {
599         struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
600         struct dentry *de;
601
602         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), flags=%u\n",
603                dentry->d_name.len, dentry->d_name.name,
604                PFID(ll_inode2fid(parent)), parent, flags);
605
606         /* Optimize away (CREATE && !OPEN). Let .create handle the race. */
607         if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN))
608                 return NULL;
609
610         if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
611                 itp = NULL;
612         else
613                 itp = &it;
614         de = ll_lookup_it(parent, dentry, itp);
615
616         if (itp != NULL)
617                 ll_intent_release(itp);
618
619         return de;
620 }
621
622 /*
623  * For cached negative dentry and new dentry, handle lookup/create/open
624  * together.
625  */
626 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
627                           struct file *file, unsigned open_flags,
628                           umode_t mode, int *opened)
629 {
630         struct lookup_intent *it;
631         struct dentry *de;
632         long long lookup_flags = LOOKUP_OPEN;
633         int rc = 0;
634         ENTRY;
635
636         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), file %p,"
637                            "open_flags %x, mode %x opened %d\n",
638                dentry->d_name.len, dentry->d_name.name,
639                PFID(ll_inode2fid(dir)), dir, file, open_flags, mode, *opened);
640
641         OBD_ALLOC(it, sizeof(*it));
642         if (!it)
643                 RETURN(-ENOMEM);
644
645         it->it_op = IT_OPEN;
646         if (open_flags & O_CREAT) {
647                 it->it_op |= IT_CREAT;
648                 lookup_flags |= LOOKUP_CREATE;
649         }
650         it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
651         it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
652         it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
653
654         /* Dentry added to dcache tree in ll_lookup_it */
655         de = ll_lookup_it(dir, dentry, it);
656         if (IS_ERR(de))
657                 rc = PTR_ERR(de);
658         else if (de != NULL)
659                 dentry = de;
660
661         if (!rc) {
662                 if (it_disposition(it, DISP_OPEN_CREATE)) {
663                         /* Dentry instantiated in ll_create_it. */
664                         rc = ll_create_it(dir, dentry, it);
665                         if (rc) {
666                                 /* We dget in ll_splice_alias. */
667                                 if (de != NULL)
668                                         dput(de);
669                                 goto out_release;
670                         }
671
672                         *opened |= FILE_CREATED;
673                 }
674                 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN)) {
675                         /* Open dentry. */
676                         if (S_ISFIFO(dentry->d_inode->i_mode)) {
677                                 /* We cannot call open here as it would
678                                  * deadlock.
679                                  */
680                                 if (it_disposition(it, DISP_ENQ_OPEN_REF))
681                                         ptlrpc_req_finished(
682                                                        (struct ptlrpc_request *)
683                                                           it->d.lustre.it_data);
684                                 rc = finish_no_open(file, de);
685                         } else {
686                                 file->private_data = it;
687                                 rc = finish_open(file, dentry, NULL, opened);
688                                 /* We dget in ll_splice_alias. finish_open takes
689                                  * care of dget for fd open.
690                                  */
691                                 if (de != NULL)
692                                         dput(de);
693                         }
694                 } else {
695                         rc = finish_no_open(file, de);
696                 }
697         }
698
699 out_release:
700         ll_intent_release(it);
701         OBD_FREE(it, sizeof(*it));
702
703         RETURN(rc);
704 }
705
706 #else /* !HAVE_IOP_ATOMIC_OPEN */
707 static struct lookup_intent *
708 ll_convert_intent(struct open_intent *oit, int lookup_flags)
709 {
710         struct lookup_intent *it;
711
712         OBD_ALLOC_PTR(it);
713         if (!it)
714                 return ERR_PTR(-ENOMEM);
715
716         if (lookup_flags & LOOKUP_OPEN) {
717                 it->it_op = IT_OPEN;
718                 if (lookup_flags & LOOKUP_CREATE)
719                         it->it_op |= IT_CREAT;
720                 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
721                 it->it_flags = ll_namei_to_lookup_intent_flag(oit->flags);
722                 it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
723         } else {
724                 it->it_op = IT_GETATTR;
725         }
726
727         return it;
728 }
729
730 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
731                                    struct nameidata *nd)
732 {
733         struct dentry *de;
734         ENTRY;
735
736         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
737                 struct lookup_intent *it;
738
739                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
740                         it = ll_d2d(dentry)->lld_it;
741                         ll_d2d(dentry)->lld_it = NULL;
742                 } else {
743                         if ((nd->flags & LOOKUP_CREATE) &&
744                             !(nd->flags & LOOKUP_OPEN))
745                                 RETURN(NULL);
746
747                         it = ll_convert_intent(&nd->intent.open, nd->flags);
748                         if (IS_ERR(it))
749                                 RETURN((struct dentry *)it);
750                 }
751
752                 de = ll_lookup_it(parent, dentry, it);
753                 if (de)
754                         dentry = de;
755                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
756                         if (dentry->d_inode &&
757                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
758                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
759                                         // We cannot call open here as it would
760                                         // deadlock.
761                                         ptlrpc_req_finished(
762                                                        (struct ptlrpc_request *)
763                                                           it->d.lustre.it_data);
764                                 } else {
765                                         struct file *filp;
766
767                                         nd->intent.open.file->private_data = it;
768                                         filp = lookup_instantiate_filp(nd,
769                                                                        dentry,
770                                                                        NULL);
771                                         if (IS_ERR(filp)) {
772                                                 if (de)
773                                                         dput(de);
774                                                 de = (struct dentry *)filp;
775                                         }
776                                 }
777                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
778                                 // XXX This can only reliably work on assumption
779                                 // that there are NO hashed negative dentries.
780                                 ll_d2d(dentry)->lld_it = it;
781                                 it = NULL; /* Will be freed in ll_create_nd */
782                                 /* We absolutely depend on ll_create_nd to be
783                                  * called to not leak this intent and possible
784                                  * data attached to it */
785                         }
786                 }
787
788                 if (it) {
789                         ll_intent_release(it);
790                         OBD_FREE(it, sizeof(*it));
791                 }
792         } else {
793                 de = ll_lookup_it(parent, dentry, NULL);
794         }
795
796         RETURN(de);
797 }
798 #endif /* HAVE_IOP_ATOMIC_OPEN */
799
800 /* We depend on "mode" being set with the proper file type/umask by now */
801 static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
802 {
803         struct inode *inode = NULL;
804         struct ptlrpc_request *request = NULL;
805         struct ll_sb_info *sbi = ll_i2sbi(dir);
806         int rc;
807         ENTRY;
808
809         LASSERT(it && it->d.lustre.it_disposition);
810
811         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
812         request = it->d.lustre.it_data;
813         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
814         rc = ll_prep_inode(&inode, request, dir->i_sb, it);
815         if (rc)
816                 GOTO(out, inode = ERR_PTR(rc));
817
818         LASSERT(ll_d_hlist_empty(&inode->i_dentry));
819
820         /* We asked for a lock on the directory, but were granted a
821          * lock on the inode.  Since we finally have an inode pointer,
822          * stuff it in the lock. */
823         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode "DFID"(%p)\n",
824                PFID(ll_inode2fid(inode)), inode);
825         ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
826         EXIT;
827  out:
828         ptlrpc_req_finished(request);
829         return inode;
830 }
831
832 /*
833  * By the time this is called, we already have created the directory cache
834  * entry for the new file, but it is so far negative - it has no inode.
835  *
836  * We defer creating the OBD object(s) until open, to keep the intent and
837  * non-intent code paths similar, and also because we do not have the MDS
838  * inode number before calling ll_create_node() (which is needed for LOV),
839  * so we would need to do yet another RPC to the MDS to store the LOV EA
840  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
841  * lmm_size in datalen (the MDS still has code which will handle that).
842  *
843  * If the create succeeds, we fill in the inode information
844  * with d_instantiate().
845  */
846 static int ll_create_it(struct inode *dir, struct dentry *dentry,
847                         struct lookup_intent *it)
848 {
849         struct inode *inode;
850         int rc = 0;
851         ENTRY;
852
853         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), intent=%s\n",
854                dentry->d_name.len, dentry->d_name.name,
855                PFID(ll_inode2fid(dir)), dir, LL_IT2STR(it));
856
857         rc = it_open_error(DISP_OPEN_CREATE, it);
858         if (rc)
859                 RETURN(rc);
860
861         inode = ll_create_node(dir, it);
862         if (IS_ERR(inode))
863                 RETURN(PTR_ERR(inode));
864
865         d_instantiate(dentry, inode);
866         RETURN(0);
867 }
868
869 void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
870 {
871         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
872                                                        &RMF_MDT_BODY);
873
874         LASSERT(body);
875         if (body->mbo_valid & OBD_MD_FLMTIME &&
876             body->mbo_mtime > LTIME_S(inode->i_mtime)) {
877                 CDEBUG(D_INODE, "setting fid "DFID" mtime from %lu to "LPU64
878                        "\n", PFID(ll_inode2fid(inode)),
879                        LTIME_S(inode->i_mtime), body->mbo_mtime);
880                 LTIME_S(inode->i_mtime) = body->mbo_mtime;
881         }
882
883         if (body->mbo_valid & OBD_MD_FLCTIME &&
884             body->mbo_ctime > LTIME_S(inode->i_ctime))
885                 LTIME_S(inode->i_ctime) = body->mbo_ctime;
886 }
887
888 static int ll_new_node(struct inode *dir, struct dentry *dchild,
889                        const char *tgt, umode_t mode, int rdev, __u32 opc)
890 {
891         struct qstr *name = &dchild->d_name;
892         struct ptlrpc_request *request = NULL;
893         struct md_op_data *op_data;
894         struct inode *inode = NULL;
895         struct ll_sb_info *sbi = ll_i2sbi(dir);
896         int tgt_len = 0;
897         int err;
898
899         ENTRY;
900         if (unlikely(tgt != NULL))
901                 tgt_len = strlen(tgt) + 1;
902
903         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
904                                      name->len, 0, opc, NULL);
905         if (IS_ERR(op_data))
906                 GOTO(err_exit, err = PTR_ERR(op_data));
907
908         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
909                         from_kuid(&init_user_ns, current_fsuid()),
910                         from_kgid(&init_user_ns, current_fsgid()),
911                         cfs_curproc_cap_pack(), rdev, &request);
912         ll_finish_md_op_data(op_data);
913         if (err)
914                 GOTO(err_exit, err);
915
916         ll_update_times(request, dir);
917
918         err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
919         if (err)
920                 GOTO(err_exit, err);
921
922         d_instantiate(dchild, inode);
923
924         EXIT;
925 err_exit:
926         ptlrpc_req_finished(request);
927
928         return err;
929 }
930
931 static int ll_mknod(struct inode *dir, struct dentry *dchild, ll_umode_t mode,
932                     dev_t rdev)
933 {
934         struct qstr *name = &dchild->d_name;
935         int err;
936         ENTRY;
937
938         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p) mode %o dev %x\n",
939                name->len, name->name, PFID(ll_inode2fid(dir)), dir,
940                mode, rdev);
941
942         if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
943                 mode &= ~current_umask();
944
945         switch (mode & S_IFMT) {
946         case 0:
947                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
948         case S_IFREG:
949         case S_IFCHR:
950         case S_IFBLK:
951         case S_IFIFO:
952         case S_IFSOCK:
953                 err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
954                                   LUSTRE_OPC_MKNOD);
955                 break;
956         case S_IFDIR:
957                 err = -EPERM;
958                 break;
959         default:
960                 err = -EINVAL;
961         }
962
963         if (!err)
964                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD, 1);
965
966         RETURN(err);
967 }
968
969 #ifdef HAVE_IOP_ATOMIC_OPEN
970 /*
971  * Plain create. Intent create is handled in atomic_open.
972  */
973 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
974                         umode_t mode, bool want_excl)
975 {
976         int rc;
977
978         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), "
979                            "flags=%u, excl=%d\n", dentry->d_name.len,
980                dentry->d_name.name, PFID(ll_inode2fid(dir)),
981                dir, mode, want_excl);
982
983         rc = ll_mknod(dir, dentry, mode, 0);
984
985         ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
986
987         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, unhashed %d\n",
988                dentry->d_name.len, dentry->d_name.name, d_unhashed(dentry));
989
990         return rc;
991 }
992 #else /* !HAVE_IOP_ATOMIC_OPEN */
993 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
994                         ll_umode_t mode, struct nameidata *nd)
995 {
996         struct ll_dentry_data *lld = ll_d2d(dentry);
997         struct lookup_intent *it = NULL;
998         int rc;
999
1000         if (lld != NULL)
1001                 it = lld->lld_it;
1002
1003         if (!it)
1004                 return ll_mknod(dir, dentry, mode, 0);
1005
1006         lld->lld_it = NULL;
1007
1008         /* Was there an error? Propagate it! */
1009         if (it->d.lustre.it_status) {
1010                 rc = it->d.lustre.it_status;
1011                 goto out;
1012         }
1013
1014         rc = ll_create_it(dir, dentry, it);
1015         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
1016                 struct file *filp;
1017
1018                 nd->intent.open.file->private_data = it;
1019                 filp = lookup_instantiate_filp(nd, dentry, NULL);
1020                 if (IS_ERR(filp))
1021                         rc = PTR_ERR(filp);
1022         }
1023
1024 out:
1025         ll_intent_release(it);
1026         OBD_FREE(it, sizeof(*it));
1027
1028         if (!rc)
1029                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
1030
1031         return rc;
1032 }
1033 #endif /* HAVE_IOP_ATOMIC_OPEN */
1034
1035 static int ll_symlink(struct inode *dir, struct dentry *dchild,
1036                       const char *oldpath)
1037 {
1038         struct qstr *name = &dchild->d_name;
1039         int err;
1040         ENTRY;
1041
1042         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), target=%.*s\n",
1043                name->len, name->name, PFID(ll_inode2fid(dir)),
1044                dir, 3000, oldpath);
1045
1046         err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO, 0,
1047                           LUSTRE_OPC_SYMLINK);
1048
1049         if (!err)
1050                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
1051
1052         RETURN(err);
1053 }
1054
1055 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1056                    struct dentry *new_dentry)
1057 {
1058         struct inode *src = old_dentry->d_inode;
1059         struct qstr *name = &new_dentry->d_name;
1060         struct ll_sb_info *sbi = ll_i2sbi(dir);
1061         struct ptlrpc_request *request = NULL;
1062         struct md_op_data *op_data;
1063         int err;
1064
1065         ENTRY;
1066         CDEBUG(D_VFSTRACE, "VFS Op: inode="DFID"(%p), dir="DFID"(%p), "
1067                "target=%.*s\n", PFID(ll_inode2fid(src)), src,
1068                PFID(ll_inode2fid(dir)), dir, name->len, name->name);
1069
1070         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
1071                                      0, LUSTRE_OPC_ANY, NULL);
1072         if (IS_ERR(op_data))
1073                 RETURN(PTR_ERR(op_data));
1074
1075         err = md_link(sbi->ll_md_exp, op_data, &request);
1076         ll_finish_md_op_data(op_data);
1077         if (err)
1078                 GOTO(out, err);
1079
1080         ll_update_times(request, dir);
1081         ll_stats_ops_tally(sbi, LPROC_LL_LINK, 1);
1082         EXIT;
1083 out:
1084         ptlrpc_req_finished(request);
1085         RETURN(err);
1086 }
1087
1088 static int ll_mkdir(struct inode *dir, struct dentry *dchild, ll_umode_t mode)
1089 {
1090         struct qstr *name = &dchild->d_name;
1091         int err;
1092         ENTRY;
1093
1094         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1095                name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1096
1097         if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
1098                 mode &= ~current_umask();
1099
1100         mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
1101
1102         err = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
1103         if (err == 0)
1104                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
1105
1106         RETURN(err);
1107 }
1108
1109 static int ll_rmdir(struct inode *dir, struct dentry *dchild)
1110 {
1111         struct qstr *name = &dchild->d_name;
1112         struct ptlrpc_request *request = NULL;
1113         struct md_op_data *op_data;
1114         int rc;
1115         ENTRY;
1116
1117         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1118                name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1119
1120         if (unlikely(d_mountpoint(dchild)))
1121                 RETURN(-EBUSY);
1122
1123         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1124                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1125         if (IS_ERR(op_data))
1126                 RETURN(PTR_ERR(op_data));
1127
1128         if (dchild->d_inode != NULL)
1129                 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1130
1131         op_data->op_fid2 = op_data->op_fid3;
1132         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1133         ll_finish_md_op_data(op_data);
1134         if (rc == 0) {
1135                 ll_update_times(request, dir);
1136                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
1137         }
1138
1139         ptlrpc_req_finished(request);
1140         RETURN(rc);
1141 }
1142
1143 /**
1144  * Remove dir entry
1145  **/
1146 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
1147 {
1148         struct ptlrpc_request *request = NULL;
1149         struct md_op_data *op_data;
1150         int rc;
1151         ENTRY;
1152
1153         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1154                namelen, name, PFID(ll_inode2fid(dir)), dir);
1155
1156         op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
1157                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1158         if (IS_ERR(op_data))
1159                 RETURN(PTR_ERR(op_data));
1160         op_data->op_cli_flags |= CLI_RM_ENTRY;
1161         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1162         ll_finish_md_op_data(op_data);
1163         if (rc == 0) {
1164                 ll_update_times(request, dir);
1165                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
1166         }
1167
1168         ptlrpc_req_finished(request);
1169         RETURN(rc);
1170 }
1171
1172 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1173 {
1174         struct mdt_body *body;
1175         struct lov_mds_md *eadata;
1176         struct lov_stripe_md *lsm = NULL;
1177         struct obd_trans_info oti = { 0 };
1178         struct obdo *oa;
1179         struct obd_capa *oc = NULL;
1180         int rc;
1181         ENTRY;
1182
1183         /* req is swabbed so this is safe */
1184         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1185         if (!(body->mbo_valid & OBD_MD_FLEASIZE))
1186                 RETURN(0);
1187
1188         if (body->mbo_eadatasize == 0) {
1189                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1190                 GOTO(out, rc = -EPROTO);
1191         }
1192
1193         /* The MDS sent back the EA because we unlinked the last reference
1194          * to this file. Use this EA to unlink the objects on the OST.
1195          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1196          * check it is complete and sensible. */
1197         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1198                                               body->mbo_eadatasize);
1199         LASSERT(eadata != NULL);
1200
1201         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->mbo_eadatasize);
1202         if (rc < 0) {
1203                 CERROR("obd_unpackmd: %d\n", rc);
1204                 GOTO(out, rc);
1205         }
1206         LASSERT(rc >= sizeof(*lsm));
1207
1208         OBDO_ALLOC(oa);
1209         if (oa == NULL)
1210                 GOTO(out_free_memmd, rc = -ENOMEM);
1211
1212         oa->o_oi = lsm->lsm_oi;
1213         oa->o_mode = body->mbo_mode & S_IFMT;
1214         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1215
1216         if (body->mbo_valid & OBD_MD_FLCOOKIE) {
1217                 oa->o_valid |= OBD_MD_FLCOOKIE;
1218                 oti.oti_logcookies =
1219                         req_capsule_server_sized_get(&request->rq_pill,
1220                                                      &RMF_LOGCOOKIES,
1221                                                    sizeof(struct llog_cookie) *
1222                                                      lsm->lsm_stripe_count);
1223                 if (oti.oti_logcookies == NULL) {
1224                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1225                         body->mbo_valid &= ~OBD_MD_FLCOOKIE;
1226                 }
1227         }
1228
1229         if (body->mbo_valid & OBD_MD_FLOSSCAPA) {
1230                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1231                 if (rc)
1232                         GOTO(out_free_memmd, rc);
1233         }
1234
1235         rc = obd_destroy(NULL, ll_i2dtexp(dir), oa, lsm, &oti,
1236                          ll_i2mdexp(dir), oc);
1237         capa_put(oc);
1238         if (rc)
1239                 CERROR("obd destroy objid "DOSTID" error %d\n",
1240                        POSTID(&lsm->lsm_oi), rc);
1241 out_free_memmd:
1242         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1243         OBDO_FREE(oa);
1244 out:
1245         return rc;
1246 }
1247
1248 /* ll_unlink() doesn't update the inode with the new link count.
1249  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if
1250  * there is any lock existing. They will recycle dentries and inodes
1251  * based upon locks too. b=20433 */
1252 static int ll_unlink(struct inode *dir, struct dentry *dchild)
1253 {
1254         struct qstr *name = &dchild->d_name;
1255         struct ptlrpc_request *request = NULL;
1256         struct md_op_data *op_data;
1257         int rc;
1258         ENTRY;
1259         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
1260                name->len, name->name, PFID(ll_inode2fid(dir)), dir);
1261
1262         /*
1263          * XXX: unlink bind mountpoint maybe call to here,
1264          * just check it as vfs_unlink does.
1265          */
1266         if (unlikely(d_mountpoint(dchild)))
1267                 RETURN(-EBUSY);
1268
1269         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
1270                                      LUSTRE_OPC_ANY, NULL);
1271         if (IS_ERR(op_data))
1272                 RETURN(PTR_ERR(op_data));
1273
1274         if (dchild->d_inode != NULL)
1275                 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
1276
1277         op_data->op_fid2 = op_data->op_fid3;
1278         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1279         ll_finish_md_op_data(op_data);
1280         if (rc)
1281                 GOTO(out, rc);
1282
1283         ll_update_times(request, dir);
1284         ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
1285
1286         rc = ll_objects_destroy(request, dir);
1287  out:
1288         ptlrpc_req_finished(request);
1289         RETURN(rc);
1290 }
1291
1292 static int ll_rename(struct inode *src, struct dentry *src_dchild,
1293                      struct inode *tgt, struct dentry *tgt_dchild)
1294 {
1295         struct qstr *src_name = &src_dchild->d_name;
1296         struct qstr *tgt_name = &tgt_dchild->d_name;
1297         struct ptlrpc_request *request = NULL;
1298         struct ll_sb_info *sbi = ll_i2sbi(src);
1299         struct md_op_data *op_data;
1300         int err;
1301         ENTRY;
1302         CDEBUG(D_VFSTRACE, "VFS Op:oldname=%.*s, src_dir="DFID
1303                "(%p), newname=%.*s, tgt_dir="DFID"(%p)\n",
1304                src_name->len, src_name->name,
1305                PFID(ll_inode2fid(src)), src, tgt_name->len,
1306                tgt_name->name, PFID(ll_inode2fid(tgt)), tgt);
1307
1308         if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
1309                 RETURN(-EBUSY);
1310
1311         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1312                                      LUSTRE_OPC_ANY, NULL);
1313         if (IS_ERR(op_data))
1314                 RETURN(PTR_ERR(op_data));
1315
1316         if (src_dchild->d_inode != NULL)
1317                 op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
1318
1319         if (tgt_dchild->d_inode != NULL)
1320                 op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
1321
1322         err = md_rename(sbi->ll_md_exp, op_data,
1323                         src_name->name, src_name->len,
1324                         tgt_name->name, tgt_name->len, &request);
1325         ll_finish_md_op_data(op_data);
1326         if (!err) {
1327                 ll_update_times(request, src);
1328                 ll_update_times(request, tgt);
1329                 ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
1330                 err = ll_objects_destroy(request, src);
1331         }
1332
1333         ptlrpc_req_finished(request);
1334
1335         if (err == 0)
1336                 d_move(src_dchild, tgt_dchild);
1337
1338         RETURN(err);
1339 }
1340
1341 const struct inode_operations ll_dir_inode_operations = {
1342         .mknod              = ll_mknod,
1343 #ifdef HAVE_IOP_ATOMIC_OPEN
1344         .atomic_open        = ll_atomic_open,
1345 #endif
1346         .lookup             = ll_lookup_nd,
1347         .create             = ll_create_nd,
1348         /* We need all these non-raw things for NFSD, to not patch it. */
1349         .unlink             = ll_unlink,
1350         .mkdir              = ll_mkdir,
1351         .rmdir              = ll_rmdir,
1352         .symlink            = ll_symlink,
1353         .link               = ll_link,
1354         .rename             = ll_rename,
1355         .setattr            = ll_setattr,
1356         .getattr            = ll_getattr,
1357         .permission         = ll_inode_permission,
1358         .setxattr           = ll_setxattr,
1359         .getxattr           = ll_getxattr,
1360         .listxattr          = ll_listxattr,
1361         .removexattr        = ll_removexattr,
1362 #ifdef HAVE_IOP_GET_ACL
1363         .get_acl            = ll_get_acl,
1364 #endif
1365 };
1366
1367 const struct inode_operations ll_special_inode_operations = {
1368         .setattr        = ll_setattr,
1369         .getattr        = ll_getattr,
1370         .permission     = ll_inode_permission,
1371         .setxattr       = ll_setxattr,
1372         .getxattr       = ll_getxattr,
1373         .listxattr      = ll_listxattr,
1374         .removexattr    = ll_removexattr,
1375 #ifdef HAVE_IOP_GET_ACL
1376         .get_acl            = ll_get_acl,
1377 #endif
1378 };