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LU-857 security: Lustre client tolerates enforced SELinux.
[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 (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
30  * Use is subject to license terms.
31  *
32  * Copyright (c) 2011 Whamcloud, Inc.
33  *
34  */
35 /*
36  * This file is part of Lustre, http://www.lustre.org/
37  * Lustre is a trademark of Sun Microsystems, Inc.
38  */
39
40 #include <linux/fs.h>
41 #include <linux/sched.h>
42 #include <linux/mm.h>
43 #include <linux/smp_lock.h>
44 #include <linux/quotaops.h>
45 #include <linux/highmem.h>
46 #include <linux/pagemap.h>
47 #include <linux/security.h>
48
49 #define DEBUG_SUBSYSTEM S_LLITE
50
51 #include <obd_support.h>
52 #include <lustre_fid.h>
53 #include <lustre_lite.h>
54 #include <lustre_dlm.h>
55 #include <lustre_ver.h>
56 #include "llite_internal.h"
57
58 /*
59  * Check if we have something mounted at the named dchild.
60  * In such a case there would always be dentry present.
61  */
62 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
63                            struct qstr *name)
64 {
65         int mounted = 0;
66
67         if (unlikely(dchild)) {
68                 mounted = d_mountpoint(dchild);
69         } else if (dparent) {
70                 dchild = d_lookup(dparent, name);
71                 if (dchild) {
72                         mounted = d_mountpoint(dchild);
73                         dput(dchild);
74                 }
75         }
76         return mounted;
77 }
78
79 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
80 {
81         ENTRY;
82
83         ldlm_lock_decref(lockh, mode);
84
85         RETURN(0);
86 }
87
88
89 /* called from iget5_locked->find_inode() under inode_lock spinlock */
90 static int ll_test_inode(struct inode *inode, void *opaque)
91 {
92         struct ll_inode_info *lli = ll_i2info(inode);
93         struct lustre_md     *md = opaque;
94
95         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
96                 CERROR("MDS body missing FID\n");
97                 return 0;
98         }
99
100         if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
101                 return 0;
102
103         return 1;
104 }
105
106 static int ll_set_inode(struct inode *inode, void *opaque)
107 {
108         struct ll_inode_info *lli = ll_i2info(inode);
109         struct mdt_body *body = ((struct lustre_md *)opaque)->body;
110
111         if (unlikely(!(body->valid & OBD_MD_FLID))) {
112                 CERROR("MDS body missing FID\n");
113                 return -EINVAL;
114         }
115
116         lli->lli_fid = body->fid1;
117         return 0;
118 }
119
120
121 /*
122  * Get an inode by inode number (already instantiated by the intent lookup).
123  * Returns inode or NULL
124  */
125 struct inode *ll_iget(struct super_block *sb, ino_t hash,
126                       struct lustre_md *md)
127 {
128         struct inode         *inode;
129         ENTRY;
130
131         LASSERT(hash != 0);
132         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
133
134         if (inode) {
135                 if (inode->i_state & I_NEW) {
136                         int rc = 0;
137
138                         ll_read_inode2(inode, md);
139                         if (S_ISREG(inode->i_mode) &&
140                             ll_i2info(inode)->lli_clob == NULL)
141                                 rc = cl_inode_init(inode, md);
142                         if (rc != 0) {
143                                 md->lsm = NULL;
144                                 make_bad_inode(inode);
145                                 unlock_new_inode(inode);
146                                 iput(inode);
147                                 inode = ERR_PTR(rc);
148                         } else
149                                 unlock_new_inode(inode);
150                 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
151                                 ll_update_inode(inode, md);
152                 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
153                        inode, PFID(&md->body->fid1));
154         }
155         RETURN(inode);
156 }
157
158 static void ll_drop_negative_dentry(struct inode *dir)
159 {
160         struct dentry *dentry, *tmp_alias, *tmp_subdir;
161
162         cfs_spin_lock(&ll_lookup_lock);
163         spin_lock(&dcache_lock);
164 restart:
165         list_for_each_entry_safe(dentry, tmp_alias,
166                                  &dir->i_dentry,d_alias) {
167                 if (!list_empty(&dentry->d_subdirs)) {
168                         struct dentry *child;
169                         list_for_each_entry_safe(child, tmp_subdir,
170                                                  &dentry->d_subdirs,
171                                                  d_child) {
172                                 /* XXX Print some debug here? */
173                                 if (!child->d_inode)
174                                 /* Negative dentry. If we were
175                                    dropping dcache lock, go
176                                    throught the list again */
177                                         if (ll_drop_dentry(child))
178                                                 goto restart;
179                         }
180                 }
181         }
182         spin_unlock(&dcache_lock);
183         cfs_spin_unlock(&ll_lookup_lock);
184 }
185
186
187 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
188                        void *data, int flag)
189 {
190         int rc;
191         struct lustre_handle lockh;
192         ENTRY;
193
194         switch (flag) {
195         case LDLM_CB_BLOCKING:
196                 ldlm_lock2handle(lock, &lockh);
197                 rc = ldlm_cli_cancel(&lockh);
198                 if (rc < 0) {
199                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
200                         RETURN(rc);
201                 }
202                 break;
203         case LDLM_CB_CANCELING: {
204                 struct inode *inode = ll_inode_from_lock(lock);
205                 struct ll_inode_info *lli;
206                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
207                 struct lu_fid *fid;
208                 ldlm_mode_t mode = lock->l_req_mode;
209
210                 /* Invalidate all dentries associated with this inode */
211                 if (inode == NULL)
212                         break;
213
214                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
215                 /* For OPEN locks we differentiate between lock modes - CR, CW. PR - bug 22891 */
216                 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE))
217                         ll_have_md_lock(inode, &bits, LCK_MINMODE);
218
219                 if (bits & MDS_INODELOCK_OPEN)
220                         ll_have_md_lock(inode, &bits, mode);
221
222                 fid = ll_inode2fid(inode);
223                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
224                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
225                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
226                         LDLM_ERROR(lock, "data mismatch with object "
227                                    DFID" (%p)", PFID(fid), inode);
228                 }
229
230                 if (bits & MDS_INODELOCK_OPEN) {
231                         int flags = 0;
232                         switch (lock->l_req_mode) {
233                         case LCK_CW:
234                                 flags = FMODE_WRITE;
235                                 break;
236                         case LCK_PR:
237                                 flags = FMODE_EXEC;
238                                 break;
239                         case LCK_CR:
240                                 flags = FMODE_READ;
241                                 break;
242                         default:
243                                 CERROR("Unexpected lock mode for OPEN lock "
244                                        "%d, inode %ld\n", lock->l_req_mode,
245                                        inode->i_ino);
246                         }
247                         ll_md_real_close(inode, flags);
248                 }
249
250                 lli = ll_i2info(inode);
251                 if (bits & MDS_INODELOCK_UPDATE)
252                         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
253
254                 if (S_ISDIR(inode->i_mode) &&
255                      (bits & MDS_INODELOCK_UPDATE)) {
256                         CDEBUG(D_INODE, "invalidating inode %lu\n",
257                                inode->i_ino);
258                         truncate_inode_pages(inode->i_mapping, 0);
259                         ll_drop_negative_dentry(inode);
260                 }
261
262                 if (inode->i_sb->s_root &&
263                     inode != inode->i_sb->s_root->d_inode &&
264                     (bits & MDS_INODELOCK_LOOKUP))
265                         ll_unhash_aliases(inode);
266                 iput(inode);
267                 break;
268         }
269         default:
270                 LBUG();
271         }
272
273         RETURN(0);
274 }
275
276 __u32 ll_i2suppgid(struct inode *i)
277 {
278         if (cfs_curproc_is_in_groups(i->i_gid))
279                 return (__u32)i->i_gid;
280         else
281                 return (__u32)(-1);
282 }
283
284 /* Pack the required supplementary groups into the supplied groups array.
285  * If we don't need to use the groups from the target inode(s) then we
286  * instead pack one or more groups from the user's supplementary group
287  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
288 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
289 {
290 #if 0
291         int i;
292 #endif
293
294         LASSERT(i1 != NULL);
295         LASSERT(suppgids != NULL);
296
297         suppgids[0] = ll_i2suppgid(i1);
298
299         if (i2)
300                 suppgids[1] = ll_i2suppgid(i2);
301                 else
302                         suppgids[1] = -1;
303
304 #if 0
305         for (i = 0; i < current_ngroups; i++) {
306                 if (suppgids[0] == -1) {
307                         if (current_groups[i] != suppgids[1])
308                                 suppgids[0] = current_groups[i];
309                         continue;
310                 }
311                 if (suppgids[1] == -1) {
312                         if (current_groups[i] != suppgids[0])
313                                 suppgids[1] = current_groups[i];
314                         continue;
315                 }
316                 break;
317         }
318 #endif
319 }
320
321 static void ll_d_add(struct dentry *de, struct inode *inode)
322 {
323         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
324         /* d_instantiate */
325         if (!list_empty(&de->d_alias)) {
326                 spin_unlock(&dcache_lock);
327                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
328                        de->d_name.len, de->d_name.name, de,
329                        de->d_alias.next, de->d_alias.prev);
330                 LBUG();
331         }
332         if (inode)
333                 list_add(&de->d_alias, &inode->i_dentry);
334         de->d_inode = inode;
335         /* d_instantiate() replacement code should initialize security
336          * context. */
337         security_d_instantiate(de, inode);
338
339         /* d_rehash */
340         if (!d_unhashed(de)) {
341                 spin_unlock(&dcache_lock);
342                 CERROR("dentry %.*s %p hash next %p\n",
343                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
344                 LBUG();
345         }
346         d_rehash_cond(de, 0);
347 }
348
349 /* Search "inode"'s alias list for a dentry that has the same name and parent
350  * as de.  If found, return it.  If not found, return de.
351  * Lustre can't use d_add_unique because don't unhash aliases for directory
352  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
353  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
354  */
355 struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
356 {
357         struct list_head *tmp;
358         struct dentry *dentry;
359         struct dentry *last_discon = NULL;
360
361         cfs_spin_lock(&ll_lookup_lock);
362         spin_lock(&dcache_lock);
363         list_for_each(tmp, &inode->i_dentry) {
364                 dentry = list_entry(tmp, struct dentry, d_alias);
365
366                 /* We are called here with 'de' already on the aliases list. */
367                 if (unlikely(dentry == de)) {
368                         CERROR("whoops\n");
369                         continue;
370                 }
371
372                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
373                         /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
374                         last_discon = dentry;
375                         continue;
376                 }
377
378                 if (dentry->d_parent != de->d_parent)
379                         continue;
380
381                 if (dentry->d_name.hash != de->d_name.hash)
382                         continue;
383
384                 if (dentry->d_name.len != de->d_name.len)
385                         continue;
386
387                 if (memcmp(dentry->d_name.name, de->d_name.name,
388                            de->d_name.len) != 0)
389                         continue;
390
391                 dget_locked(dentry);
392                 ll_dops_init(dentry, 0, 1);
393                 ll_dentry_rehash(dentry, 1);
394                 spin_unlock(&dcache_lock);
395                 cfs_spin_unlock(&ll_lookup_lock);
396                 iput(inode);
397                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
398                        "refc %d\n", de->d_name.len, de->d_name.name, de,
399                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
400                 return dentry;
401         }
402
403         if (last_discon) {
404                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
405                         "refc %d\n", last_discon, last_discon->d_inode,
406                         atomic_read(&last_discon->d_count));
407                 dget_locked(last_discon);
408                 lock_dentry(last_discon);
409                 last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
410                 unlock_dentry(last_discon);
411                 spin_unlock(&dcache_lock);
412                 cfs_spin_unlock(&ll_lookup_lock);
413                 ll_dops_init(last_discon, 1, 1);
414                 d_rehash(de);
415                 d_move(last_discon, de);
416                 iput(inode);
417                 return last_discon;
418         }
419         lock_dentry(de);
420         de->d_flags |= DCACHE_LUSTRE_INVALID;
421         unlock_dentry(de);
422         ll_d_add(de, inode);
423
424         spin_unlock(&dcache_lock);
425         cfs_spin_unlock(&ll_lookup_lock);
426
427         return de;
428 }
429
430 int ll_lookup_it_finish(struct ptlrpc_request *request,
431                         struct lookup_intent *it, void *data)
432 {
433         struct it_cb_data *icbd = data;
434         struct dentry **de = icbd->icbd_childp;
435         struct inode *parent = icbd->icbd_parent;
436         struct inode *inode = NULL;
437         int rc;
438         ENTRY;
439
440         /* NB 1 request reference will be taken away by ll_intent_lock()
441          * when I return */
442         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
443                 struct dentry *save = *de;
444                 __u64 bits = 0;
445
446                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
447                 if (rc)
448                         RETURN(rc);
449
450                 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
451
452                 /* We used to query real size from OSTs here, but actually
453                    this is not needed. For stat() calls size would be updated
454                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
455                    2.4 and
456                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
457                    Everybody else who needs correct file size would call
458                    cl_glimpse_size or some equivalent themselves anyway.
459                    Also see bug 7198. */
460                 ll_dops_init(*de, 1, 1);
461                 *de = ll_find_alias(inode, *de);
462                 if (*de != save) {
463                         struct ll_dentry_data *lld = ll_d2d(*de);
464
465                         /* just make sure the ll_dentry_data is ready */
466                         if (unlikely(lld == NULL))
467                                 ll_dops_init(*de, 1, 1);
468                 }
469                 /* we have lookup look - unhide dentry */
470                 ll_dentry_reset_flags(*de, bits);
471         } else {
472                 __u64 ibits;
473
474                 ll_dops_init(*de, 1, 1);
475                 /* Check that parent has UPDATE lock. If there is none, we
476                    cannot afford to hash this dentry (done by ll_d_add) as it
477                    might get picked up later when UPDATE lock will appear */
478                 ibits = MDS_INODELOCK_UPDATE;
479                 if (ll_have_md_lock(parent, &ibits, LCK_MINMODE)) {
480                         spin_lock(&dcache_lock);
481                         ll_d_add(*de, NULL);
482                         spin_unlock(&dcache_lock);
483                 } else {
484                         /* negative lookup - and don't have update lock to
485                          * parent */
486                         lock_dentry(*de);
487                         (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
488                         unlock_dentry(*de);
489
490                         (*de)->d_inode = NULL;
491                         /* We do not want to hash the dentry if don`t have a
492                          * lock, but if this dentry is later used in d_move,
493                          * we'd hit uninitialised list head d_hash, so we just
494                          * do this to init d_hash field but leave dentry
495                          * unhashed. (bug 10796). */
496                         d_rehash(*de);
497                         d_drop(*de);
498                 }
499         }
500
501         RETURN(0);
502 }
503
504 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
505                                    struct lookup_intent *it, int lookup_flags)
506 {
507         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
508         struct dentry *save = dentry, *retval;
509         struct ptlrpc_request *req = NULL;
510         struct md_op_data *op_data;
511         struct it_cb_data icbd;
512         __u32 opc;
513         int rc;
514         ENTRY;
515
516         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
517                 RETURN(ERR_PTR(-ENAMETOOLONG));
518
519         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
520                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
521                parent->i_generation, parent, LL_IT2STR(it));
522
523         if (d_mountpoint(dentry))
524                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
525
526         ll_frob_intent(&it, &lookup_it);
527
528         /* As do_lookup is called before follow_mount, root dentry may be left
529          * not valid, revalidate it here. */
530         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
531             (it->it_op & (IT_OPEN | IT_CREAT))) {
532                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
533                                             MDS_INODELOCK_LOOKUP);
534                 if (rc)
535                         RETURN(ERR_PTR(rc));
536         }
537
538         if (it->it_op == IT_GETATTR) {
539                 rc = ll_statahead_enter(parent, &dentry, 0);
540                 if (rc == 1) {
541                         if (dentry == save)
542                                 GOTO(out, retval = NULL);
543                         GOTO(out, retval = dentry);
544                 }
545         }
546
547         icbd.icbd_childp = &dentry;
548         icbd.icbd_parent = parent;
549
550         if (it->it_op & IT_CREAT ||
551             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
552                 opc = LUSTRE_OPC_CREATE;
553         else
554                 opc = LUSTRE_OPC_ANY;
555
556         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
557                                      dentry->d_name.len, lookup_flags, opc,
558                                      NULL);
559         if (IS_ERR(op_data))
560                 RETURN((void *)op_data);
561
562         it->it_create_mode &= ~cfs_curproc_umask();
563
564         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
565                             lookup_flags, &req, 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, &icbd);
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 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
596                                         int lookup_flags)
597 {
598         struct lookup_intent *it;
599
600         OBD_ALLOC(it, sizeof(*it));
601         if (!it)
602                 return ERR_PTR(-ENOMEM);
603
604         if (lookup_flags & LOOKUP_OPEN) {
605                 it->it_op = IT_OPEN;
606                 if (lookup_flags & LOOKUP_CREATE)
607                         it->it_op |= IT_CREAT;
608                 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
609                 it->it_flags = oit->flags;
610         } else {
611                 it->it_op = IT_GETATTR;
612         }
613
614 #ifndef HAVE_FILE_IN_STRUCT_INTENT
615                 /* Since there is no way to pass our intent to ll_file_open,
616                  * just check the file is there. Actual open will be done
617                  * in ll_file_open */
618                 if (it->it_op & IT_OPEN)
619                         it->it_op = IT_LOOKUP;
620 #endif
621
622         return it;
623 }
624
625 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
626                                    struct nameidata *nd)
627 {
628         struct dentry *de;
629         ENTRY;
630
631         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
632                 struct lookup_intent *it;
633
634 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
635                 /* Did we came here from failed revalidate just to propagate
636                  * its error? */
637                 if (nd->flags & LOOKUP_OPEN)
638                         if (IS_ERR(nd->intent.open.file))
639                                 RETURN((struct dentry *)nd->intent.open.file);
640 #endif
641                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
642                         it = ll_d2d(dentry)->lld_it;
643                         ll_d2d(dentry)->lld_it = NULL;
644                 } else {
645                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
646                                 /* We are sure this is new dentry, so we need to create
647                                    our private data and set the dentry ops */ 
648                                 ll_dops_init(dentry, 1, 1);
649                                 RETURN(NULL);
650                         }
651                         it = ll_convert_intent(&nd->intent.open, nd->flags);
652                         if (IS_ERR(it))
653                                 RETURN((struct dentry *)it);
654                 }
655
656                 de = ll_lookup_it(parent, dentry, it, nd->flags);
657                 if (de)
658                         dentry = de;
659                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
660                         if (dentry->d_inode &&
661                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
662 #ifdef HAVE_FILE_IN_STRUCT_INTENT
663                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
664                                         // We cannot call open here as it would
665                                         // deadlock.
666                                         ptlrpc_req_finished(
667                                                        (struct ptlrpc_request *)
668                                                           it->d.lustre.it_data);
669                                 } else {
670 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
671 /* 2.6.1[456] have a bug in open_namei() that forgets to check
672  * nd->intent.open.file for error, so we need to return it as lookup's result
673  * instead */
674                                         struct file *filp;
675                                         nd->intent.open.file->private_data = it;
676                                         filp =lookup_instantiate_filp(nd,dentry,
677                                                                       NULL);
678                                         if (IS_ERR(filp)) {
679                                                 if (de)
680                                                         dput(de);
681                                                 de = (struct dentry *) filp;
682                                         }
683 #else
684                                         nd->intent.open.file->private_data = it;
685                                         (void)lookup_instantiate_filp(nd,dentry,
686                                                                       NULL);
687 #endif
688
689                                 }
690 #else /* HAVE_FILE_IN_STRUCT_INTENT */
691                                 /* Release open handle as we have no way to
692                                  * pass it to ll_file_open */
693                                 ll_release_openhandle(dentry, it);
694 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
695                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
696                                 // XXX This can only reliably work on assumption
697                                 // that there are NO hashed negative dentries.
698                                 ll_d2d(dentry)->lld_it = it;
699                                 it = NULL; /* Will be freed in ll_create_nd */
700                                 /* We absolutely depend on ll_create_nd to be
701                                  * called to not leak this intent and possible
702                                  * data attached to it */
703                         }
704                 }
705
706                 if (it) {
707                         ll_intent_release(it);
708                         OBD_FREE(it, sizeof(*it));
709                 }
710         } else {
711                 de = ll_lookup_it(parent, dentry, NULL, 0);
712         }
713
714         RETURN(de);
715 }
716
717 /* We depend on "mode" being set with the proper file type/umask by now */
718 static struct inode *ll_create_node(struct inode *dir, const char *name,
719                                     int namelen, const void *data, int datalen,
720                                     int mode, __u64 extra,
721                                     struct lookup_intent *it)
722 {
723         struct inode *inode = NULL;
724         struct ptlrpc_request *request = NULL;
725         struct ll_sb_info *sbi = ll_i2sbi(dir);
726         int rc;
727         ENTRY;
728
729         LASSERT(it && it->d.lustre.it_disposition);
730
731         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
732         request = it->d.lustre.it_data;
733         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
734         rc = ll_prep_inode(&inode, request, dir->i_sb);
735         if (rc)
736                 GOTO(out, inode = ERR_PTR(rc));
737
738         LASSERT(list_empty(&inode->i_dentry));
739
740         /* We asked for a lock on the directory, but were granted a
741          * lock on the inode.  Since we finally have an inode pointer,
742          * stuff it in the lock. */
743         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
744                inode, inode->i_ino, inode->i_generation);
745         ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
746         EXIT;
747  out:
748         ptlrpc_req_finished(request);
749         return inode;
750 }
751
752 /*
753  * By the time this is called, we already have created the directory cache
754  * entry for the new file, but it is so far negative - it has no inode.
755  *
756  * We defer creating the OBD object(s) until open, to keep the intent and
757  * non-intent code paths similar, and also because we do not have the MDS
758  * inode number before calling ll_create_node() (which is needed for LOV),
759  * so we would need to do yet another RPC to the MDS to store the LOV EA
760  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
761  * lmm_size in datalen (the MDS still has code which will handle that).
762  *
763  * If the create succeeds, we fill in the inode information
764  * with d_instantiate().
765  */
766 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
767                         struct lookup_intent *it)
768 {
769         struct inode *inode;
770         int rc = 0;
771         ENTRY;
772
773         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
774                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
775                dir->i_generation, dir, LL_IT2STR(it));
776
777         rc = it_open_error(DISP_OPEN_CREATE, it);
778         if (rc)
779                 RETURN(rc);
780
781         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
782                                NULL, 0, mode, 0, it);
783         if (IS_ERR(inode))
784                 RETURN(PTR_ERR(inode));
785
786         d_instantiate(dentry, inode);
787         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
788          * but some callers, e.g. do_coredump, expect dentry to be hashed after
789          * successful create. Hash it here. */
790         spin_lock(&dcache_lock);
791         if (d_unhashed(dentry))
792                 d_rehash_cond(dentry, 0);
793         spin_unlock(&dcache_lock);
794         RETURN(0);
795 }
796
797 static void ll_update_times(struct ptlrpc_request *request,
798                             struct inode *inode)
799 {
800         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
801                                                        &RMF_MDT_BODY);
802
803         LASSERT(body);
804         if (body->valid & OBD_MD_FLMTIME &&
805             body->mtime > LTIME_S(inode->i_mtime)) {
806                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
807                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
808                 LTIME_S(inode->i_mtime) = body->mtime;
809         }
810         if (body->valid & OBD_MD_FLCTIME &&
811             body->ctime > LTIME_S(inode->i_ctime))
812                 LTIME_S(inode->i_ctime) = body->ctime;
813 }
814
815 static int ll_new_node(struct inode *dir, struct qstr *name,
816                        const char *tgt, int mode, int rdev,
817                        struct dentry *dchild, __u32 opc)
818 {
819         struct ptlrpc_request *request = NULL;
820         struct md_op_data *op_data;
821         struct inode *inode = NULL;
822         struct ll_sb_info *sbi = ll_i2sbi(dir);
823         int tgt_len = 0;
824         int err;
825
826         ENTRY;
827         if (unlikely(tgt != NULL))
828                 tgt_len = strlen(tgt) + 1;
829
830         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
831                                      name->len, 0, opc, NULL);
832         if (IS_ERR(op_data))
833                 GOTO(err_exit, err = PTR_ERR(op_data));
834
835         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
836                         cfs_curproc_fsuid(), cfs_curproc_fsgid(),
837                         cfs_curproc_cap_pack(), rdev, &request);
838         ll_finish_md_op_data(op_data);
839         if (err)
840                 GOTO(err_exit, err);
841
842         ll_update_times(request, dir);
843
844         if (dchild) {
845                 err = ll_prep_inode(&inode, request, dchild->d_sb);
846                 if (err)
847                      GOTO(err_exit, err);
848
849                 d_drop(dchild);
850                 d_instantiate(dchild, inode);
851         }
852         EXIT;
853 err_exit:
854         ptlrpc_req_finished(request);
855
856         return err;
857 }
858
859 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
860                             unsigned rdev, struct dentry *dchild)
861 {
862         int err;
863         ENTRY;
864
865         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
866                name->len, name->name, dir->i_ino, dir->i_generation, dir,
867                mode, rdev);
868
869         mode &= ~cfs_curproc_umask();
870
871         switch (mode & S_IFMT) {
872         case 0:
873                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
874         case S_IFREG:
875         case S_IFCHR:
876         case S_IFBLK:
877         case S_IFIFO:
878         case S_IFSOCK:
879                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
880                                   LUSTRE_OPC_MKNOD);
881                 break;
882         case S_IFDIR:
883                 err = -EPERM;
884                 break;
885         default:
886                 err = -EINVAL;
887         }
888         RETURN(err);
889 }
890
891 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
892                         int mode, struct nameidata *nd)
893 {
894         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
895         int rc;
896
897         if (!it)
898                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
899
900         ll_d2d(dentry)->lld_it = NULL;
901
902         /* Was there an error? Propagate it! */
903         if (it->d.lustre.it_status) {
904                 rc = it->d.lustre.it_status;
905                 goto out;
906         }
907
908         rc = ll_create_it(dir, dentry, mode, it);
909 #ifdef HAVE_FILE_IN_STRUCT_INTENT
910         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
911                 nd->intent.open.file->private_data = it;
912                 lookup_instantiate_filp(nd, dentry, NULL);
913         }
914 #else
915         ll_release_openhandle(dentry,it);
916 #endif
917
918 out:
919         ll_intent_release(it);
920         OBD_FREE(it, sizeof(*it));
921
922         return rc;
923 }
924
925 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
926                               const char *tgt, struct dentry *dchild)
927 {
928         int err;
929         ENTRY;
930
931         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
932                name->len, name->name, dir->i_ino, dir->i_generation,
933                dir, 3000, tgt);
934
935         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
936                           0, dchild, LUSTRE_OPC_SYMLINK);
937         RETURN(err);
938 }
939
940 static int ll_link_generic(struct inode *src,  struct inode *dir,
941                            struct qstr *name, struct dentry *dchild)
942 {
943         struct ll_sb_info *sbi = ll_i2sbi(dir);
944         struct ptlrpc_request *request = NULL;
945         struct md_op_data *op_data;
946         int err;
947
948         ENTRY;
949         CDEBUG(D_VFSTRACE,
950                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
951                src->i_ino, src->i_generation, src, dir->i_ino,
952                dir->i_generation, dir, name->len, name->name);
953
954         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
955                                      0, LUSTRE_OPC_ANY, NULL);
956         if (IS_ERR(op_data))
957                 RETURN(PTR_ERR(op_data));
958
959         err = md_link(sbi->ll_md_exp, op_data, &request);
960         ll_finish_md_op_data(op_data);
961         if (err)
962                 GOTO(out, err);
963         if (dchild)
964                 d_drop(dchild);
965
966         ll_update_times(request, dir);
967         EXIT;
968 out:
969         ptlrpc_req_finished(request);
970         RETURN(err);
971 }
972
973 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
974                             int mode, struct dentry *dchild)
975
976 {
977         int err;
978         ENTRY;
979
980         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
981                name->len, name->name, dir->i_ino, dir->i_generation, dir);
982
983         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~cfs_curproc_umask()) | S_IFDIR;
984         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
985
986         RETURN(err);
987 }
988
989 /* Try to find the child dentry by its name.
990    If found, put the result fid into @fid. */
991 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
992                              struct lu_fid *fid)
993 {
994         struct dentry *parent, *child;
995
996         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
997         child = d_lookup(parent, name);
998         if (child) {
999                 if (child->d_inode)
1000                         *fid = *ll_inode2fid(child->d_inode);
1001                 dput(child);
1002         }
1003 }
1004
1005 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1006                             struct dentry *dchild, struct qstr *name)
1007 {
1008         struct ptlrpc_request *request = NULL;
1009         struct md_op_data *op_data;
1010         int rc;
1011         ENTRY;
1012
1013         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1014                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1015
1016         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1017                 RETURN(-EBUSY);
1018
1019         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1020                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1021         if (IS_ERR(op_data))
1022                 RETURN(PTR_ERR(op_data));
1023
1024         ll_get_child_fid(dir, name, &op_data->op_fid3);
1025         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1026         ll_finish_md_op_data(op_data);
1027         if (rc == 0)
1028                 ll_update_times(request, dir);
1029         ptlrpc_req_finished(request);
1030         RETURN(rc);
1031 }
1032
1033 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1034 {
1035         struct mdt_body *body;
1036         struct lov_mds_md *eadata;
1037         struct lov_stripe_md *lsm = NULL;
1038         struct obd_trans_info oti = { 0 };
1039         struct obdo *oa;
1040         struct obd_capa *oc = NULL;
1041         int rc;
1042         ENTRY;
1043
1044         /* req is swabbed so this is safe */
1045         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1046         if (!(body->valid & OBD_MD_FLEASIZE))
1047                 RETURN(0);
1048
1049         if (body->eadatasize == 0) {
1050                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1051                 GOTO(out, rc = -EPROTO);
1052         }
1053
1054         /* The MDS sent back the EA because we unlinked the last reference
1055          * to this file. Use this EA to unlink the objects on the OST.
1056          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1057          * check it is complete and sensible. */
1058         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1059                                               body->eadatasize);
1060         LASSERT(eadata != NULL);
1061
1062         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1063         if (rc < 0) {
1064                 CERROR("obd_unpackmd: %d\n", rc);
1065                 GOTO(out, rc);
1066         }
1067         LASSERT(rc >= sizeof(*lsm));
1068
1069         OBDO_ALLOC(oa);
1070         if (oa == NULL)
1071                 GOTO(out_free_memmd, rc = -ENOMEM);
1072
1073         oa->o_id = lsm->lsm_object_id;
1074         oa->o_seq = lsm->lsm_object_seq;
1075         oa->o_mode = body->mode & S_IFMT;
1076         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1077
1078         if (body->valid & OBD_MD_FLCOOKIE) {
1079                 oa->o_valid |= OBD_MD_FLCOOKIE;
1080                 oti.oti_logcookies =
1081                         req_capsule_server_sized_get(&request->rq_pill,
1082                                                      &RMF_LOGCOOKIES,
1083                                                    sizeof(struct llog_cookie) *
1084                                                      lsm->lsm_stripe_count);
1085                 if (oti.oti_logcookies == NULL) {
1086                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1087                         body->valid &= ~OBD_MD_FLCOOKIE;
1088                 }
1089         }
1090
1091         if (body->valid & OBD_MD_FLOSSCAPA) {
1092                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1093                 if (rc)
1094                         GOTO(out_free_memmd, rc);
1095         }
1096
1097         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir), oc);
1098         capa_put(oc);
1099         OBDO_FREE(oa);
1100         if (rc)
1101                 CERROR("obd destroy objid "LPX64" error %d\n",
1102                        lsm->lsm_object_id, rc);
1103  out_free_memmd:
1104         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1105  out:
1106         return rc;
1107 }
1108
1109 /* ll_unlink_generic() doesn't update the inode with the new link count.
1110  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1111  * is any lock existing. They will recycle dentries and inodes based upon locks
1112  * too. b=20433 */
1113 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1114                              struct dentry *dchild, struct qstr *name)
1115 {
1116         struct ptlrpc_request *request = NULL;
1117         struct md_op_data *op_data;
1118         int rc;
1119         ENTRY;
1120         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1121                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1122
1123         /*
1124          * XXX: unlink bind mountpoint maybe call to here,
1125          * just check it as vfs_unlink does.
1126          */
1127         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1128                 RETURN(-EBUSY);
1129
1130         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1131                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1132         if (IS_ERR(op_data))
1133                 RETURN(PTR_ERR(op_data));
1134
1135         ll_get_child_fid(dir, name, &op_data->op_fid3);
1136         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1137         ll_finish_md_op_data(op_data);
1138         if (rc)
1139                 GOTO(out, rc);
1140
1141         ll_update_times(request, dir);
1142
1143         rc = ll_objects_destroy(request, dir);
1144  out:
1145         ptlrpc_req_finished(request);
1146         RETURN(rc);
1147 }
1148
1149 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1150                              struct dentry *src_dchild, struct qstr *src_name,
1151                              struct inode *tgt, struct dentry *tgt_dparent,
1152                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1153 {
1154         struct ptlrpc_request *request = NULL;
1155         struct ll_sb_info *sbi = ll_i2sbi(src);
1156         struct md_op_data *op_data;
1157         int err;
1158         ENTRY;
1159         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1160                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1161                src->i_ino, src->i_generation, src, tgt_name->len,
1162                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1163
1164         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1165             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1166                 RETURN(-EBUSY);
1167
1168         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1169                                      LUSTRE_OPC_ANY, NULL);
1170         if (IS_ERR(op_data))
1171                 RETURN(PTR_ERR(op_data));
1172
1173         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1174         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1175         err = md_rename(sbi->ll_md_exp, op_data,
1176                         src_name->name, src_name->len,
1177                         tgt_name->name, tgt_name->len, &request);
1178         ll_finish_md_op_data(op_data);
1179         if (!err) {
1180                 ll_update_times(request, src);
1181                 ll_update_times(request, tgt);
1182                 err = ll_objects_destroy(request, src);
1183         }
1184
1185         ptlrpc_req_finished(request);
1186
1187         RETURN(err);
1188 }
1189
1190 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1191                     ll_dev_t rdev)
1192 {
1193         return ll_mknod_generic(dir, &dchild->d_name, mode,
1194                                 old_encode_dev(rdev), dchild);
1195 }
1196
1197 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1198 {
1199         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1200 }
1201 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1202 {
1203         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1204 }
1205 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1206 {
1207         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1208 }
1209 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1210                       const char *oldname)
1211 {
1212         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1213 }
1214 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1215                    struct dentry *new_dentry)
1216 {
1217         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1218                                new_dentry);
1219 }
1220 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1221                      struct inode *new_dir, struct dentry *new_dentry)
1222 {
1223         int err;
1224         err = ll_rename_generic(old_dir, NULL,
1225                                  old_dentry, &old_dentry->d_name,
1226                                  new_dir, NULL, new_dentry,
1227                                  &new_dentry->d_name);
1228         if (!err) {
1229 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1230                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1231 #endif
1232                         d_move(old_dentry, new_dentry);
1233         }
1234         return err;
1235 }
1236
1237 struct inode_operations ll_dir_inode_operations = {
1238         .mknod              = ll_mknod,
1239         .lookup             = ll_lookup_nd,
1240         .create             = ll_create_nd,
1241         /* We need all these non-raw things for NFSD, to not patch it. */
1242         .unlink             = ll_unlink,
1243         .mkdir              = ll_mkdir,
1244         .rmdir              = ll_rmdir,
1245         .symlink            = ll_symlink,
1246         .link               = ll_link,
1247         .rename             = ll_rename,
1248         .setattr            = ll_setattr,
1249         .getattr            = ll_getattr,
1250         .permission         = ll_inode_permission,
1251         .setxattr           = ll_setxattr,
1252         .getxattr           = ll_getxattr,
1253         .listxattr          = ll_listxattr,
1254         .removexattr        = ll_removexattr,
1255 };
1256
1257 struct inode_operations ll_special_inode_operations = {
1258         .setattr        = ll_setattr,
1259         .getattr        = ll_getattr,
1260         .permission     = ll_inode_permission,
1261         .setxattr       = ll_setxattr,
1262         .getxattr       = ll_getxattr,
1263         .listxattr      = ll_listxattr,
1264         .removexattr    = ll_removexattr,
1265 };