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b=22342 process racer condition between statahead and rename/unlink operation
[fs/lustre-release.git] / lustre / llite / namei.c
1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=8:tabstop=8:
3  *
4  * GPL HEADER START
5  *
6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 only,
10  * as published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License version 2 for more details (a copy is included
16  * in the LICENSE file that accompanied this code).
17  *
18  * You should have received a copy of the GNU General Public License
19  * version 2 along with this program; If not, see
20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
21  *
22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23  * CA 95054 USA or visit www.sun.com if you need additional information or
24  * have any questions.
25  *
26  * GPL HEADER END
27  */
28 /*
29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
30  * Use is subject to license terms.
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/smp_lock.h>
41 #include <linux/quotaops.h>
42 #include <linux/highmem.h>
43 #include <linux/pagemap.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 <lustre_mdc.h>
53 #include "llite_internal.h"
54
55 /*
56  * Check if we have something mounted at the named dchild.
57  * In such a case there would always be dentry present.
58  */
59 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
60                            struct qstr *name)
61 {
62         int mounted = 0;
63
64         if (unlikely(dchild)) {
65                 mounted = d_mountpoint(dchild);
66         } else if (dparent) {
67                 dchild = d_lookup(dparent, name);
68                 if (dchild) {
69                         mounted = d_mountpoint(dchild);
70                         dput(dchild);
71                 }
72         }
73         return mounted;
74 }
75
76 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
77 {
78         ENTRY;
79
80         ldlm_lock_decref(lockh, mode);
81
82         RETURN(0);
83 }
84
85
86 /* called from iget5_locked->find_inode() under inode_lock spinlock */
87 static int ll_test_inode(struct inode *inode, void *opaque)
88 {
89         struct ll_inode_info *lli = ll_i2info(inode);
90         struct lustre_md     *md = opaque;
91
92         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
93                 CERROR("MDS body missing FID\n");
94                 return 0;
95         }
96
97         if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
98                 return 0;
99
100         return 1;
101 }
102
103 static int ll_set_inode(struct inode *inode, void *opaque)
104 {
105         struct ll_inode_info *lli = ll_i2info(inode);
106         struct mdt_body *body = ((struct lustre_md *)opaque)->body;
107
108         if (unlikely(!(body->valid & OBD_MD_FLID))) {
109                 CERROR("MDS body missing FID\n");
110                 return -EINVAL;
111         }
112
113         lli->lli_fid = body->fid1;
114         return 0;
115 }
116
117
118 /*
119  * Get an inode by inode number (already instantiated by the intent lookup).
120  * Returns inode or NULL
121  */
122 struct inode *ll_iget(struct super_block *sb, ino_t hash,
123                       struct lustre_md *md)
124 {
125         struct inode         *inode;
126         ENTRY;
127
128         LASSERT(hash != 0);
129         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
130
131         if (inode) {
132                 if (inode->i_state & I_NEW) {
133                         int rc;
134
135                         ll_read_inode2(inode, md);
136                         rc = cl_inode_init(inode, md);
137                         if (rc != 0) {
138                                 md->lsm = NULL;
139                                 make_bad_inode(inode);
140                                 unlock_new_inode(inode);
141                                 iput(inode);
142                                 inode = ERR_PTR(rc);
143                         } else
144                                 unlock_new_inode(inode);
145                 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
146                                 ll_update_inode(inode, md);
147                 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
148                        inode, PFID(&md->body->fid1));
149         }
150         RETURN(inode);
151 }
152
153 static void ll_drop_negative_dentry(struct inode *dir)
154 {
155         struct dentry *dentry, *tmp_alias, *tmp_subdir;
156
157         cfs_spin_lock(&ll_lookup_lock);
158         spin_lock(&dcache_lock);
159 restart:
160         list_for_each_entry_safe(dentry, tmp_alias,
161                                  &dir->i_dentry,d_alias) {
162                 if (!list_empty(&dentry->d_subdirs)) {
163                         struct dentry *child;
164                         list_for_each_entry_safe(child, tmp_subdir,
165                                                  &dentry->d_subdirs,
166                                                  d_child) {
167                                 /* XXX Print some debug here? */
168                                 if (!child->d_inode)
169                                 /* Negative dentry. If we were
170                                    dropping dcache lock, go
171                                    throught the list again */
172                                         if (ll_drop_dentry(child))
173                                                 goto restart;
174                         }
175                 }
176         }
177         spin_unlock(&dcache_lock);
178         cfs_spin_unlock(&ll_lookup_lock);
179 }
180
181
182 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
183                        void *data, int flag)
184 {
185         int rc;
186         struct lustre_handle lockh;
187         ENTRY;
188
189         switch (flag) {
190         case LDLM_CB_BLOCKING:
191                 ldlm_lock2handle(lock, &lockh);
192                 rc = ldlm_cli_cancel(&lockh);
193                 if (rc < 0) {
194                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
195                         RETURN(rc);
196                 }
197                 break;
198         case LDLM_CB_CANCELING: {
199                 struct inode *inode = ll_inode_from_lock(lock);
200                 struct ll_inode_info *lli;
201                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
202                 struct lu_fid *fid;
203
204                 /* Invalidate all dentries associated with this inode */
205                 if (inode == NULL)
206                         break;
207
208                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
209                 if ((bits & MDS_INODELOCK_LOOKUP) &&
210                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
211                         bits &= ~MDS_INODELOCK_LOOKUP;
212                 if ((bits & MDS_INODELOCK_UPDATE) &&
213                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
214                         bits &= ~MDS_INODELOCK_UPDATE;
215                 if ((bits & MDS_INODELOCK_OPEN) &&
216                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
217                         bits &= ~MDS_INODELOCK_OPEN;
218
219                 fid = ll_inode2fid(inode);
220                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
221                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
222                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
223                         LDLM_ERROR(lock, "data mismatch with object "
224                                    DFID" (%p)", PFID(fid), inode);
225                 }
226
227                 if (bits & MDS_INODELOCK_OPEN) {
228                         int flags = 0;
229                         switch (lock->l_req_mode) {
230                         case LCK_CW:
231                                 flags = FMODE_WRITE;
232                                 break;
233                         case LCK_PR:
234                                 flags = FMODE_EXEC;
235                                 break;
236                         case LCK_CR:
237                                 flags = FMODE_READ;
238                                 break;
239                         default:
240                                 CERROR("Unexpected lock mode for OPEN lock "
241                                        "%d, inode %ld\n", lock->l_req_mode,
242                                        inode->i_ino);
243                         }
244                         ll_md_real_close(inode, flags);
245                 }
246
247                 lli = ll_i2info(inode);
248                 if (bits & MDS_INODELOCK_UPDATE)
249                         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
250
251                 if (S_ISDIR(inode->i_mode) &&
252                      (bits & MDS_INODELOCK_UPDATE)) {
253                         CDEBUG(D_INODE, "invalidating inode %lu\n",
254                                inode->i_ino);
255                         truncate_inode_pages(inode->i_mapping, 0);
256                         ll_drop_negative_dentry(inode);
257                 }
258
259                 if ((bits & MDS_INODELOCK_LOOKUP) &&
260                     !cfs_list_empty(&lli->lli_sa_dentry)) {
261                         struct ll_dentry_data *lld, *next;
262
263                         cfs_spin_lock(&lli->lli_sa_lock);
264                         cfs_list_for_each_entry_safe(lld, next,
265                                                      &lli->lli_sa_dentry,
266                                                      lld_sa_alias)
267                                 cfs_list_del_init(&lld->lld_sa_alias);
268                         cfs_spin_unlock(&lli->lli_sa_lock);
269                 }
270
271                 if (inode->i_sb->s_root &&
272                     inode != inode->i_sb->s_root->d_inode &&
273                     (bits & MDS_INODELOCK_LOOKUP))
274                         ll_unhash_aliases(inode);
275                 iput(inode);
276                 break;
277         }
278         default:
279                 LBUG();
280         }
281
282         RETURN(0);
283 }
284
285 __u32 ll_i2suppgid(struct inode *i)
286 {
287         if (cfs_curproc_is_in_groups(i->i_gid))
288                 return (__u32)i->i_gid;
289         else
290                 return (__u32)(-1);
291 }
292
293 /* Pack the required supplementary groups into the supplied groups array.
294  * If we don't need to use the groups from the target inode(s) then we
295  * instead pack one or more groups from the user's supplementary group
296  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
297 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
298 {
299 #if 0
300         int i;
301 #endif
302
303         LASSERT(i1 != NULL);
304         LASSERT(suppgids != NULL);
305
306         suppgids[0] = ll_i2suppgid(i1);
307
308         if (i2)
309                 suppgids[1] = ll_i2suppgid(i2);
310                 else
311                         suppgids[1] = -1;
312
313 #if 0
314         for (i = 0; i < current_ngroups; i++) {
315                 if (suppgids[0] == -1) {
316                         if (current_groups[i] != suppgids[1])
317                                 suppgids[0] = current_groups[i];
318                         continue;
319                 }
320                 if (suppgids[1] == -1) {
321                         if (current_groups[i] != suppgids[0])
322                                 suppgids[1] = current_groups[i];
323                         continue;
324                 }
325                 break;
326         }
327 #endif
328 }
329
330 static void ll_d_add(struct dentry *de, struct inode *inode)
331 {
332         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
333         /* d_instantiate */
334         if (!list_empty(&de->d_alias)) {
335                 spin_unlock(&dcache_lock);
336                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
337                        de->d_name.len, de->d_name.name, de,
338                        de->d_alias.next, de->d_alias.prev);
339                 LBUG();
340         }
341         if (inode)
342                 list_add(&de->d_alias, &inode->i_dentry);
343         de->d_inode = inode;
344
345         /* d_rehash */
346         if (!d_unhashed(de)) {
347                 spin_unlock(&dcache_lock);
348                 CERROR("dentry %.*s %p hash next %p\n",
349                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
350                 LBUG();
351         }
352         d_rehash_cond(de, 0);
353 }
354
355 /* Search "inode"'s alias list for a dentry that has the same name and parent
356  * as de.  If found, return it.  If not found, return de.
357  * Lustre can't use d_add_unique because don't unhash aliases for directory
358  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
359  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
360  */
361 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
362 {
363         struct list_head *tmp;
364         struct dentry *dentry;
365         struct dentry *last_discon = NULL;
366
367         cfs_spin_lock(&ll_lookup_lock);
368         spin_lock(&dcache_lock);
369         list_for_each(tmp, &inode->i_dentry) {
370                 dentry = list_entry(tmp, struct dentry, d_alias);
371
372                 /* We are called here with 'de' already on the aliases list. */
373                 if (unlikely(dentry == de)) {
374                         CERROR("whoops\n");
375                         continue;
376                 }
377
378                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
379                         LASSERT(last_discon == NULL);
380                         last_discon = dentry;
381                         continue;
382                 }
383
384                 if (dentry->d_parent != de->d_parent)
385                         continue;
386
387                 if (dentry->d_name.hash != de->d_name.hash)
388                         continue;
389
390                 if (dentry->d_name.len != de->d_name.len)
391                         continue;
392
393                 if (memcmp(dentry->d_name.name, de->d_name.name,
394                            de->d_name.len) != 0)
395                         continue;
396
397                 dget_locked(dentry);
398                 lock_dentry(dentry);
399                 __d_drop(dentry);
400                 unlock_dentry(dentry);
401                 ll_dops_init(dentry, 0);
402                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
403                 spin_unlock(&dcache_lock);
404                 cfs_spin_unlock(&ll_lookup_lock);
405                 iput(inode);
406                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
407                        "refc %d\n", de->d_name.len, de->d_name.name, de,
408                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
409                 return dentry;
410         }
411
412         if (last_discon) {
413                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
414                         "refc %d\n", last_discon, last_discon->d_inode,
415                         atomic_read(&last_discon->d_count));
416                 dget_locked(last_discon);
417                 lock_dentry(last_discon);
418                 last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
419                 unlock_dentry(last_discon);
420                 spin_unlock(&dcache_lock);
421                 cfs_spin_unlock(&ll_lookup_lock);
422                 ll_dops_init(last_discon, 1);
423                 d_rehash(de);
424                 d_move(last_discon, de);
425                 iput(inode);
426                 return last_discon;
427         }
428         lock_dentry(de);
429         de->d_flags |= DCACHE_LUSTRE_INVALID;
430         unlock_dentry(de);
431         ll_d_add(de, inode);
432
433         spin_unlock(&dcache_lock);
434         cfs_spin_unlock(&ll_lookup_lock);
435
436         return de;
437 }
438
439 void ll_lookup_it_alias(struct dentry **de, struct inode *inode, __u32 bits)
440 {
441         struct dentry *save = *de;
442         ENTRY;
443
444         ll_dops_init(*de, 1);
445         *de = ll_find_alias(inode, *de);
446         if (*de != save) {
447                 struct ll_dentry_data *lld = ll_d2d(*de);
448
449                 /* just make sure the ll_dentry_data is ready */
450                 if (unlikely(lld == NULL))
451                         ll_dops_init(*de, 1);
452         }
453         /* we have lookup look - unhide dentry */
454         if (bits & MDS_INODELOCK_LOOKUP) {
455                 lock_dentry(*de);
456                 (*de)->d_flags &= ~DCACHE_LUSTRE_INVALID;
457                 unlock_dentry(*de);
458         }
459         EXIT;
460 }
461
462 int ll_lookup_it_finish(struct ptlrpc_request *request,
463                         struct lookup_intent *it, void *data)
464 {
465         struct it_cb_data *icbd = data;
466         struct dentry **de = icbd->icbd_childp;
467         struct inode *parent = icbd->icbd_parent;
468         struct ll_sb_info *sbi = ll_i2sbi(parent);
469         struct inode *inode = NULL;
470         int rc;
471         ENTRY;
472
473         /* NB 1 request reference will be taken away by ll_intent_lock()
474          * when I return */
475         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
476                 __u32 bits;
477
478                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
479                 if (rc)
480                         RETURN(rc);
481
482                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
483                        inode, inode->i_ino, inode->i_generation);
484                 md_set_lock_data(sbi->ll_md_exp,
485                                  &it->d.lustre.it_lock_handle, inode, &bits);
486
487                 if (icbd->bits != NULL)
488                         *icbd->bits = bits;
489                 if (icbd->icbd_alias != NULL) {
490                         *icbd->icbd_alias = inode;
491                         RETURN(0);
492                 }
493
494                 /* We used to query real size from OSTs here, but actually
495                    this is not needed. For stat() calls size would be updated
496                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
497                    2.4 and
498                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
499                    Everybody else who needs correct file size would call
500                    cl_glimpse_size or some equivalent themselves anyway.
501                    Also see bug 7198. */
502                 ll_lookup_it_alias(de, inode, bits);
503         } else {
504                 ll_dops_init(*de, 1);
505                 /* Check that parent has UPDATE lock. If there is none, we
506                    cannot afford to hash this dentry (done by ll_d_add) as it
507                    might get picked up later when UPDATE lock will appear */
508                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
509                         spin_lock(&dcache_lock);
510                         ll_d_add(*de, NULL);
511                         spin_unlock(&dcache_lock);
512                 } else {
513                         /* negative lookup - and don't have update lock to
514                          * parent */
515                         lock_dentry(*de);
516                         (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
517                         unlock_dentry(*de);
518
519                         (*de)->d_inode = NULL;
520                         /* We do not want to hash the dentry if don`t have a
521                          * lock, but if this dentry is later used in d_move,
522                          * we'd hit uninitialised list head d_hash, so we just
523                          * do this to init d_hash field but leave dentry
524                          * unhashed. (bug 10796). */
525                         d_rehash(*de);
526                         d_drop(*de);
527                 }
528         }
529
530         RETURN(0);
531 }
532
533 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
534                                    struct lookup_intent *it, int lookup_flags)
535 {
536         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
537         struct dentry *save = dentry, *retval;
538         struct ptlrpc_request *req = NULL;
539         struct md_op_data *op_data;
540         struct it_cb_data icbd;
541         __u32 opc;
542         int rc, first = 0;
543         ENTRY;
544
545         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
546                 RETURN(ERR_PTR(-ENAMETOOLONG));
547
548         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
549                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
550                parent->i_generation, parent, LL_IT2STR(it));
551
552         if (d_mountpoint(dentry))
553                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
554
555         ll_frob_intent(&it, &lookup_it);
556
557         /* As do_lookup is called before follow_mount, root dentry may be left
558          * not valid, revalidate it here. */
559         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
560             (it->it_op & (IT_OPEN | IT_CREAT))) {
561                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
562                 if (rc)
563                         RETURN(ERR_PTR(rc));
564         }
565
566         if (it->it_op == IT_GETATTR) {
567                 first = ll_statahead_enter(parent, &dentry, 1);
568                 if (first >= 0) {
569                         ll_statahead_exit(parent, dentry, first);
570                         if (first == 1)
571                                 RETURN(retval = dentry);
572                 }
573         }
574
575         icbd.icbd_childp = &dentry;
576         icbd.icbd_parent = parent;
577         icbd.icbd_alias  = NULL;
578         icbd.bits        = NULL;
579
580         if (it->it_op & IT_CREAT ||
581             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
582                 opc = LUSTRE_OPC_CREATE;
583         else
584                 opc = LUSTRE_OPC_ANY;
585
586         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
587                                      dentry->d_name.len, lookup_flags, opc,
588                                      NULL);
589         if (IS_ERR(op_data))
590                 RETURN((void *)op_data);
591
592         it->it_create_mode &= ~current->fs->umask;
593
594         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
595                             lookup_flags, &req, ll_md_blocking_ast, 0);
596         ll_finish_md_op_data(op_data);
597         if (rc < 0)
598                 GOTO(out, retval = ERR_PTR(rc));
599
600         rc = ll_lookup_it_finish(req, it, &icbd);
601         if (rc != 0) {
602                 ll_intent_release(it);
603                 GOTO(out, retval = ERR_PTR(rc));
604         }
605
606         if (first == -EEXIST)
607                 ll_statahead_mark(parent, dentry);
608
609         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
610             !S_ISREG(dentry->d_inode->i_mode) &&
611             !S_ISDIR(dentry->d_inode->i_mode)) {
612                 ll_release_openhandle(dentry, it);
613         }
614         ll_lookup_finish_locks(it, dentry);
615
616         if (dentry == save)
617                 GOTO(out, retval = NULL);
618         else
619                 GOTO(out, retval = dentry);
620  out:
621         if (req)
622                 ptlrpc_req_finished(req);
623         return retval;
624 }
625
626 #ifdef HAVE_VFS_INTENT_PATCHES
627 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
628                                    struct nameidata *nd)
629 {
630         struct dentry *de;
631         ENTRY;
632
633         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
634                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
635         else
636                 de = ll_lookup_it(parent, dentry, NULL, 0);
637
638         RETURN(de);
639 }
640 #else
641 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
642                                         int lookup_flags)
643 {
644         struct lookup_intent *it;
645
646         OBD_ALLOC(it, sizeof(*it));
647         if (!it)
648                 return ERR_PTR(-ENOMEM);
649
650         if (lookup_flags & LOOKUP_OPEN) {
651                 it->it_op = IT_OPEN;
652                 if (lookup_flags & LOOKUP_CREATE)
653                         it->it_op |= IT_CREAT;
654                 it->it_create_mode = oit->create_mode;
655                 it->it_flags = oit->flags;
656         } else {
657                 it->it_op = IT_GETATTR;
658         }
659
660 #ifndef HAVE_FILE_IN_STRUCT_INTENT
661                 /* Since there is no way to pass our intent to ll_file_open,
662                  * just check the file is there. Actual open will be done
663                  * in ll_file_open */
664                 if (it->it_op & IT_OPEN)
665                         it->it_op = IT_LOOKUP;
666 #endif
667
668         return it;
669 }
670
671 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
672                                    struct nameidata *nd)
673 {
674         struct dentry *de;
675         ENTRY;
676
677         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
678                 struct lookup_intent *it;
679
680 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
681                 /* Did we came here from failed revalidate just to propagate
682                  * its error? */
683                 if (nd->flags & LOOKUP_OPEN)
684                         if (IS_ERR(nd->intent.open.file))
685                                 RETURN((struct dentry *)nd->intent.open.file);
686 #endif
687
688                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
689                         it = ll_d2d(dentry)->lld_it;
690                         ll_d2d(dentry)->lld_it = NULL;
691                 } else {
692                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
693                                 /* We are sure this is new dentry, so we need to create
694                                    our private data and set the dentry ops */ 
695                                 ll_dops_init(dentry, 1);
696                                 RETURN(NULL);
697                         }
698                         it = ll_convert_intent(&nd->intent.open, nd->flags);
699                         if (IS_ERR(it))
700                                 RETURN((struct dentry *)it);
701                 }
702
703                 de = ll_lookup_it(parent, dentry, it, nd->flags);
704                 if (de)
705                         dentry = de;
706                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
707                         if (dentry->d_inode &&
708                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
709 #ifdef HAVE_FILE_IN_STRUCT_INTENT
710                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
711                                         // We cannot call open here as it would
712                                         // deadlock.
713                                         ptlrpc_req_finished(
714                                                        (struct ptlrpc_request *)
715                                                           it->d.lustre.it_data);
716                                 } else {
717 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
718 /* 2.6.1[456] have a bug in open_namei() that forgets to check
719  * nd->intent.open.file for error, so we need to return it as lookup's result
720  * instead */
721                                         struct file *filp;
722                                         nd->intent.open.file->private_data = it;
723                                         filp =lookup_instantiate_filp(nd,dentry,
724                                                                       NULL);
725                                         if (IS_ERR(filp)) {
726                                                 if (de)
727                                                         dput(de);
728                                                 de = (struct dentry *) filp;
729                                         }
730 #else
731                                         nd->intent.open.file->private_data = it;
732                                         (void)lookup_instantiate_filp(nd,dentry,
733                                                                       NULL);
734 #endif
735
736                                 }
737 #else /* HAVE_FILE_IN_STRUCT_INTENT */
738                                 /* Release open handle as we have no way to
739                                  * pass it to ll_file_open */
740                                 ll_release_openhandle(dentry, it);
741 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
742                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
743                                 // XXX This can only reliably work on assumption
744                                 // that there are NO hashed negative dentries.
745                                 ll_d2d(dentry)->lld_it = it;
746                                 it = NULL; /* Will be freed in ll_create_nd */
747                                 /* We absolutely depend on ll_create_nd to be
748                                  * called to not leak this intent and possible
749                                  * data attached to it */
750                         }
751                 }
752
753                 if (it) {
754                         ll_intent_release(it);
755                         OBD_FREE(it, sizeof(*it));
756                 }
757         } else {
758                 de = ll_lookup_it(parent, dentry, NULL, 0);
759         }
760
761         RETURN(de);
762 }
763 #endif
764
765 /* We depend on "mode" being set with the proper file type/umask by now */
766 static struct inode *ll_create_node(struct inode *dir, const char *name,
767                                     int namelen, const void *data, int datalen,
768                                     int mode, __u64 extra,
769                                     struct lookup_intent *it)
770 {
771         struct inode *inode = NULL;
772         struct ptlrpc_request *request = NULL;
773         struct ll_sb_info *sbi = ll_i2sbi(dir);
774         int rc;
775         ENTRY;
776
777         LASSERT(it && it->d.lustre.it_disposition);
778
779         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
780         request = it->d.lustre.it_data;
781         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
782         rc = ll_prep_inode(&inode, request, dir->i_sb);
783         if (rc)
784                 GOTO(out, inode = ERR_PTR(rc));
785
786         LASSERT(list_empty(&inode->i_dentry));
787
788         /* We asked for a lock on the directory, but were granted a
789          * lock on the inode.  Since we finally have an inode pointer,
790          * stuff it in the lock. */
791         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
792                inode, inode->i_ino, inode->i_generation);
793         md_set_lock_data(sbi->ll_md_exp,
794                          &it->d.lustre.it_lock_handle, inode, NULL);
795         EXIT;
796  out:
797         ptlrpc_req_finished(request);
798         return inode;
799 }
800
801 /*
802  * By the time this is called, we already have created the directory cache
803  * entry for the new file, but it is so far negative - it has no inode.
804  *
805  * We defer creating the OBD object(s) until open, to keep the intent and
806  * non-intent code paths similar, and also because we do not have the MDS
807  * inode number before calling ll_create_node() (which is needed for LOV),
808  * so we would need to do yet another RPC to the MDS to store the LOV EA
809  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
810  * lmm_size in datalen (the MDS still has code which will handle that).
811  *
812  * If the create succeeds, we fill in the inode information
813  * with d_instantiate().
814  */
815 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
816                         struct lookup_intent *it)
817 {
818         struct inode *inode;
819         int rc = 0;
820         ENTRY;
821
822         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
823                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
824                dir->i_generation, dir, LL_IT2STR(it));
825
826         rc = it_open_error(DISP_OPEN_CREATE, it);
827         if (rc)
828                 RETURN(rc);
829
830         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
831                                NULL, 0, mode, 0, it);
832         if (IS_ERR(inode)) {
833                 RETURN(PTR_ERR(inode));
834         }
835
836         d_instantiate(dentry, inode);
837         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
838          * but some callers, e.g. do_coredump, expect dentry to be hashed after
839          * successful create. Hash it here. */
840         spin_lock(&dcache_lock);
841         if (d_unhashed(dentry))
842                 d_rehash_cond(dentry, 0);
843         spin_unlock(&dcache_lock);
844         RETURN(0);
845 }
846
847 static void ll_update_times(struct ptlrpc_request *request,
848                             struct inode *inode)
849 {
850         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
851                                                        &RMF_MDT_BODY);
852
853         LASSERT(body);
854         if (body->valid & OBD_MD_FLMTIME &&
855             body->mtime > LTIME_S(inode->i_mtime)) {
856                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
857                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
858                 LTIME_S(inode->i_mtime) = body->mtime;
859         }
860         if (body->valid & OBD_MD_FLCTIME &&
861             body->ctime > LTIME_S(inode->i_ctime))
862                 LTIME_S(inode->i_ctime) = body->ctime;
863 }
864
865 static int ll_new_node(struct inode *dir, struct qstr *name,
866                        const char *tgt, int mode, int rdev,
867                        struct dentry *dchild, __u32 opc)
868 {
869         struct ptlrpc_request *request = NULL;
870         struct md_op_data *op_data;
871         struct inode *inode = NULL;
872         struct ll_sb_info *sbi = ll_i2sbi(dir);
873         int tgt_len = 0;
874         int err;
875
876         ENTRY;
877         if (unlikely(tgt != NULL))
878                 tgt_len = strlen(tgt) + 1;
879
880         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
881                                      name->len, 0, opc, NULL);
882         if (IS_ERR(op_data))
883                 GOTO(err_exit, err = PTR_ERR(op_data));
884
885         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
886                         cfs_curproc_fsuid(), cfs_curproc_fsgid(),
887                         cfs_curproc_cap_pack(), rdev, &request);
888         ll_finish_md_op_data(op_data);
889         if (err)
890                 GOTO(err_exit, err);
891
892         ll_update_times(request, dir);
893
894         if (dchild) {
895                 err = ll_prep_inode(&inode, request, dchild->d_sb);
896                 if (err)
897                      GOTO(err_exit, err);
898
899                 d_drop(dchild);
900                 d_instantiate(dchild, inode);
901                 EXIT;
902         }
903 err_exit:
904         ptlrpc_req_finished(request);
905
906         return err;
907 }
908
909 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
910                             unsigned rdev, struct dentry *dchild)
911 {
912         int err;
913         ENTRY;
914
915         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
916                name->len, name->name, dir->i_ino, dir->i_generation, dir,
917                mode, rdev);
918
919         mode &= ~current->fs->umask;
920
921         switch (mode & S_IFMT) {
922         case 0:
923                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
924         case S_IFREG:
925         case S_IFCHR:
926         case S_IFBLK:
927         case S_IFIFO:
928         case S_IFSOCK:
929                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
930                                   LUSTRE_OPC_MKNOD);
931                 break;
932         case S_IFDIR:
933                 err = -EPERM;
934                 break;
935         default:
936                 err = -EINVAL;
937         }
938         RETURN(err);
939 }
940
941 #ifndef HAVE_VFS_INTENT_PATCHES
942 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
943                         int mode, struct nameidata *nd)
944 {
945         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
946         int rc;
947
948         if (!it)
949                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
950
951         ll_d2d(dentry)->lld_it = NULL;
952
953         /* Was there an error? Propagate it! */
954         if (it->d.lustre.it_status) {
955                 rc = it->d.lustre.it_status;
956                 goto out;
957         }
958
959         rc = ll_create_it(dir, dentry, mode, it);
960 #ifdef HAVE_FILE_IN_STRUCT_INTENT
961         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
962                 nd->intent.open.file->private_data = it;
963                 lookup_instantiate_filp(nd, dentry, NULL);
964         }
965 #else
966         ll_release_openhandle(dentry,it);
967 #endif
968
969 out:
970         ll_intent_release(it);
971         OBD_FREE(it, sizeof(*it));
972
973         return rc;
974 }
975 #else
976 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
977                         int mode, struct nameidata *nd)
978 {
979         if (!nd || !nd->intent.d.lustre.it_disposition)
980                 /* No saved request? Just mknod the file */
981                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
982
983         return ll_create_it(dir, dentry, mode, &nd->intent);
984 }
985 #endif
986
987 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
988                               const char *tgt, struct dentry *dchild)
989 {
990         int err;
991         ENTRY;
992
993         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
994                name->len, name->name, dir->i_ino, dir->i_generation,
995                dir, 3000, tgt);
996
997         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
998                           0, dchild, LUSTRE_OPC_SYMLINK);
999         RETURN(err);
1000 }
1001
1002 static int ll_link_generic(struct inode *src,  struct inode *dir,
1003                            struct qstr *name, struct dentry *dchild)
1004 {
1005         struct ll_sb_info *sbi = ll_i2sbi(dir);
1006         struct ptlrpc_request *request = NULL;
1007         struct md_op_data *op_data;
1008         int err;
1009
1010         ENTRY;
1011         CDEBUG(D_VFSTRACE,
1012                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
1013                src->i_ino, src->i_generation, src, dir->i_ino,
1014                dir->i_generation, dir, name->len, name->name);
1015
1016         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
1017                                      0, LUSTRE_OPC_ANY, NULL);
1018         if (IS_ERR(op_data))
1019                 RETURN(PTR_ERR(op_data));
1020
1021         err = md_link(sbi->ll_md_exp, op_data, &request);
1022         ll_finish_md_op_data(op_data);
1023         if (err)
1024                 GOTO(out, err);
1025         if (dchild)
1026                 d_drop(dchild);
1027
1028         ll_update_times(request, dir);
1029         EXIT;
1030 out:
1031         ptlrpc_req_finished(request);
1032         RETURN(err);
1033 }
1034
1035 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
1036                             int mode, struct dentry *dchild)
1037
1038 {
1039         int err;
1040         ENTRY;
1041
1042         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1043                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1044
1045         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
1046         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
1047
1048         RETURN(err);
1049 }
1050
1051 /* Try to find the child dentry by its name.
1052    If found, put the result fid into @fid. */
1053 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1054                              struct lu_fid *fid)
1055 {
1056         struct dentry *parent, *child;
1057
1058         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1059         child = d_lookup(parent, name);
1060         if (child) {
1061                 if (child->d_inode)
1062                         *fid = *ll_inode2fid(child->d_inode);
1063                 dput(child);
1064         }
1065 }
1066
1067 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1068                             struct dentry *dchild, struct qstr *name)
1069 {
1070         struct ptlrpc_request *request = NULL;
1071         struct md_op_data *op_data;
1072         int rc;
1073         ENTRY;
1074
1075         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1076                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1077
1078         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1079                 RETURN(-EBUSY);
1080
1081         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1082                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1083         if (IS_ERR(op_data))
1084                 RETURN(PTR_ERR(op_data));
1085
1086         ll_get_child_fid(dir, name, &op_data->op_fid3);
1087         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1088         ll_finish_md_op_data(op_data);
1089         if (rc == 0)
1090                 ll_update_times(request, dir);
1091         ptlrpc_req_finished(request);
1092         RETURN(rc);
1093 }
1094
1095 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1096 {
1097         struct mdt_body *body;
1098         struct lov_mds_md *eadata;
1099         struct lov_stripe_md *lsm = NULL;
1100         struct obd_trans_info oti = { 0 };
1101         struct obdo *oa;
1102         struct obd_capa *oc = NULL;
1103         int rc;
1104         ENTRY;
1105
1106         /* req is swabbed so this is safe */
1107         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1108         if (!(body->valid & OBD_MD_FLEASIZE))
1109                 RETURN(0);
1110
1111         if (body->eadatasize == 0) {
1112                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1113                 GOTO(out, rc = -EPROTO);
1114         }
1115
1116         /* The MDS sent back the EA because we unlinked the last reference
1117          * to this file. Use this EA to unlink the objects on the OST.
1118          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1119          * check it is complete and sensible. */
1120         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1121                                               body->eadatasize);
1122         LASSERT(eadata != NULL);
1123
1124         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1125         if (rc < 0) {
1126                 CERROR("obd_unpackmd: %d\n", rc);
1127                 GOTO(out, rc);
1128         }
1129         LASSERT(rc >= sizeof(*lsm));
1130
1131         OBDO_ALLOC(oa);
1132         if (oa == NULL)
1133                 GOTO(out_free_memmd, rc = -ENOMEM);
1134
1135         oa->o_id = lsm->lsm_object_id;
1136         oa->o_seq = lsm->lsm_object_seq;
1137         oa->o_mode = body->mode & S_IFMT;
1138         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1139
1140         if (body->valid & OBD_MD_FLCOOKIE) {
1141                 oa->o_valid |= OBD_MD_FLCOOKIE;
1142                 oti.oti_logcookies =
1143                         req_capsule_server_sized_get(&request->rq_pill,
1144                                                      &RMF_LOGCOOKIES,
1145                                                    sizeof(struct llog_cookie) *
1146                                                      lsm->lsm_stripe_count);
1147                 if (oti.oti_logcookies == NULL) {
1148                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1149                         body->valid &= ~OBD_MD_FLCOOKIE;
1150                 }
1151         }
1152
1153         if (body->valid & OBD_MD_FLOSSCAPA) {
1154                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1155                 if (rc)
1156                         GOTO(out_free_memmd, rc);
1157         }
1158
1159         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir), oc);
1160         capa_put(oc);
1161         OBDO_FREE(oa);
1162         if (rc)
1163                 CERROR("obd destroy objid "LPX64" error %d\n",
1164                        lsm->lsm_object_id, rc);
1165  out_free_memmd:
1166         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1167  out:
1168         return rc;
1169 }
1170
1171 /* ll_unlink_generic() doesn't update the inode with the new link count.
1172  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1173  * is any lock existing. They will recycle dentries and inodes based upon locks
1174  * too. b=20433 */
1175 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1176                              struct dentry *dchild, struct qstr *name)
1177 {
1178         struct ptlrpc_request *request = NULL;
1179         struct md_op_data *op_data;
1180         int rc;
1181         ENTRY;
1182         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1183                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1184
1185         /*
1186          * XXX: unlink bind mountpoint maybe call to here,
1187          * just check it as vfs_unlink does.
1188          */
1189         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1190                 RETURN(-EBUSY);
1191
1192         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1193                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1194         if (IS_ERR(op_data))
1195                 RETURN(PTR_ERR(op_data));
1196
1197         ll_get_child_fid(dir, name, &op_data->op_fid3);
1198         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1199         ll_finish_md_op_data(op_data);
1200         if (rc)
1201                 GOTO(out, rc);
1202
1203         ll_update_times(request, dir);
1204
1205         rc = ll_objects_destroy(request, dir);
1206  out:
1207         ptlrpc_req_finished(request);
1208         RETURN(rc);
1209 }
1210
1211 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1212                              struct dentry *src_dchild, struct qstr *src_name,
1213                              struct inode *tgt, struct dentry *tgt_dparent,
1214                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1215 {
1216         struct ptlrpc_request *request = NULL;
1217         struct ll_sb_info *sbi = ll_i2sbi(src);
1218         struct md_op_data *op_data;
1219         int err;
1220         ENTRY;
1221         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1222                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1223                src->i_ino, src->i_generation, src, tgt_name->len,
1224                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1225
1226         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1227             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1228                 RETURN(-EBUSY);
1229
1230         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1231                                      LUSTRE_OPC_ANY, NULL);
1232         if (IS_ERR(op_data))
1233                 RETURN(PTR_ERR(op_data));
1234
1235         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1236         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1237         err = md_rename(sbi->ll_md_exp, op_data,
1238                         src_name->name, src_name->len,
1239                         tgt_name->name, tgt_name->len, &request);
1240         ll_finish_md_op_data(op_data);
1241         if (!err) {
1242                 ll_update_times(request, src);
1243                 ll_update_times(request, tgt);
1244                 err = ll_objects_destroy(request, src);
1245         }
1246
1247         ptlrpc_req_finished(request);
1248
1249         RETURN(err);
1250 }
1251
1252 #ifdef HAVE_VFS_INTENT_PATCHES
1253 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1254 {
1255         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1256 }
1257 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1258 {
1259         return ll_rename_generic(srcnd->dentry->d_inode, srcnd->dentry,
1260                                  NULL, &srcnd->last,
1261                                  tgtnd->dentry->d_inode, tgtnd->dentry,
1262                                  NULL, &tgtnd->last);
1263 }
1264 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1265 {
1266         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1267                                &tgtnd->last, NULL);
1268 }
1269 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1270 {
1271         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1272 }
1273 static int ll_rmdir_raw(struct nameidata *nd)
1274 {
1275         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, NULL,
1276                                 &nd->last);
1277 }
1278 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1279 {
1280         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1281 }
1282 static int ll_unlink_raw(struct nameidata *nd)
1283 {
1284         return ll_unlink_generic(nd->dentry->d_inode, nd->dentry, NULL,
1285                                  &nd->last);
1286 }
1287 #endif
1288
1289 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1290                     ll_dev_t rdev)
1291 {
1292         return ll_mknod_generic(dir, &dchild->d_name, mode,
1293                                 old_encode_dev(rdev), dchild);
1294 }
1295
1296 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1297 {
1298         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1299 }
1300 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1301 {
1302         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1303 }
1304 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1305 {
1306         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1307 }
1308 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1309                       const char *oldname)
1310 {
1311         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1312 }
1313 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1314                    struct dentry *new_dentry)
1315 {
1316         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1317                                new_dentry);
1318 }
1319 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1320                      struct inode *new_dir, struct dentry *new_dentry)
1321 {
1322         int err;
1323         err = ll_rename_generic(old_dir, NULL,
1324                                  old_dentry, &old_dentry->d_name,
1325                                  new_dir, NULL, new_dentry,
1326                                  &new_dentry->d_name);
1327         if (!err) {
1328 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1329                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1330 #endif
1331                         d_move(old_dentry, new_dentry);
1332         }
1333         return err;
1334 }
1335
1336 struct inode_operations ll_dir_inode_operations = {
1337 #ifdef HAVE_VFS_INTENT_PATCHES
1338         .link_raw           = ll_link_raw,
1339         .unlink_raw         = ll_unlink_raw,
1340         .symlink_raw        = ll_symlink_raw,
1341         .mkdir_raw          = ll_mkdir_raw,
1342         .rmdir_raw          = ll_rmdir_raw,
1343         .mknod_raw          = ll_mknod_raw,
1344         .rename_raw         = ll_rename_raw,
1345         .setattr            = ll_setattr,
1346         .setattr_raw        = ll_setattr_raw,
1347 #endif
1348         .mknod              = ll_mknod,
1349         .lookup             = ll_lookup_nd,
1350         .create             = ll_create_nd,
1351         /* We need all these non-raw things for NFSD, to not patch it. */
1352         .unlink             = ll_unlink,
1353         .mkdir              = ll_mkdir,
1354         .rmdir              = ll_rmdir,
1355         .symlink            = ll_symlink,
1356         .link               = ll_link,
1357         .rename             = ll_rename,
1358         .setattr            = ll_setattr,
1359         .getattr            = ll_getattr,
1360         .permission         = ll_inode_permission,
1361         .setxattr           = ll_setxattr,
1362         .getxattr           = ll_getxattr,
1363         .listxattr          = ll_listxattr,
1364         .removexattr        = ll_removexattr,
1365 };
1366
1367 struct inode_operations ll_special_inode_operations = {
1368 #ifdef HAVE_VFS_INTENT_PATCHES
1369         .setattr_raw    = ll_setattr_raw,
1370 #endif
1371         .setattr        = ll_setattr,
1372         .getattr        = ll_getattr,
1373         .permission     = ll_inode_permission,
1374         .setxattr       = ll_setxattr,
1375         .getxattr       = ll_getxattr,
1376         .listxattr      = ll_listxattr,
1377         .removexattr    = ll_removexattr,
1378 };