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[~andy/linux] / drivers / staging / lustre / lustre / llite / namei.c
1 /*
2  * GPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 only,
8  * as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License version 2 for more details (a copy is included
14  * in the LICENSE file that accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License
17  * version 2 along with this program; If not, see
18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19  *
20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21  * CA 95054 USA or visit www.sun.com if you need additional information or
22  * have any questions.
23  *
24  * GPL HEADER END
25  */
26 /*
27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28  * Use is subject to license terms.
29  *
30  * Copyright (c) 2011, 2012, Intel Corporation.
31  */
32 /*
33  * This file is part of Lustre, http://www.lustre.org/
34  * Lustre is a trademark of Sun Microsystems, Inc.
35  */
36
37 #include <linux/fs.h>
38 #include <linux/sched.h>
39 #include <linux/mm.h>
40 #include <linux/quotaops.h>
41 #include <linux/highmem.h>
42 #include <linux/pagemap.h>
43 #include <linux/security.h>
44
45 #define DEBUG_SUBSYSTEM S_LLITE
46
47 #include <obd_support.h>
48 #include <lustre_fid.h>
49 #include <lustre_lite.h>
50 #include <lustre_dlm.h>
51 #include <lustre_ver.h>
52 #include "llite_internal.h"
53
54 static int ll_create_it(struct inode *, struct dentry *,
55                         int, struct lookup_intent *);
56
57 /*
58  * Check if we have something mounted at the named dchild.
59  * In such a case there would always be dentry present.
60  */
61 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
62                            struct qstr *name)
63 {
64         int mounted = 0;
65
66         if (unlikely(dchild)) {
67                 mounted = d_mountpoint(dchild);
68         } else if (dparent) {
69                 dchild = d_lookup(dparent, name);
70                 if (dchild) {
71                         mounted = d_mountpoint(dchild);
72                         dput(dchild);
73                 }
74         }
75         return mounted;
76 }
77
78 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
79 {
80         ldlm_lock_decref(lockh, mode);
81
82         return 0;
83 }
84
85
86 /* called from iget5_locked->find_inode() under inode_hash_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         if (unlikely(!(body->valid & OBD_MD_FLTYPE))) {
115                 CERROR("Can not initialize inode "DFID" without object type: "
116                        "valid = "LPX64"\n", PFID(&lli->lli_fid), body->valid);
117                 return -EINVAL;
118         }
119
120         inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mode & S_IFMT);
121         if (unlikely(inode->i_mode == 0)) {
122                 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
123                 return -EINVAL;
124         }
125
126         ll_lli_init(lli);
127
128         return 0;
129 }
130
131
132 /*
133  * Get an inode by inode number (already instantiated by the intent lookup).
134  * Returns inode or NULL
135  */
136 struct inode *ll_iget(struct super_block *sb, ino_t hash,
137                       struct lustre_md *md)
138 {
139         struct inode     *inode;
140
141         LASSERT(hash != 0);
142         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
143
144         if (inode) {
145                 if (inode->i_state & I_NEW) {
146                         int rc = 0;
147
148                         ll_read_inode2(inode, md);
149                         if (S_ISREG(inode->i_mode) &&
150                             ll_i2info(inode)->lli_clob == NULL) {
151                                 CDEBUG(D_INODE,
152                                         "%s: apply lsm %p to inode "DFID".\n",
153                                         ll_get_fsname(sb, NULL, 0), md->lsm,
154                                         PFID(ll_inode2fid(inode)));
155                                 rc = cl_file_inode_init(inode, md);
156                         }
157                         if (rc != 0) {
158                                 make_bad_inode(inode);
159                                 unlock_new_inode(inode);
160                                 iput(inode);
161                                 inode = ERR_PTR(rc);
162                         } else
163                                 unlock_new_inode(inode);
164                 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
165                         ll_update_inode(inode, md);
166                 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
167                        inode, PFID(&md->body->fid1));
168         }
169         return inode;
170 }
171
172 static void ll_invalidate_negative_children(struct inode *dir)
173 {
174         struct dentry *dentry, *tmp_subdir;
175         struct ll_d_hlist_node *p;
176
177         ll_lock_dcache(dir);
178         ll_d_hlist_for_each_entry(dentry, p, &dir->i_dentry, d_alias) {
179                 spin_lock(&dentry->d_lock);
180                 if (!list_empty(&dentry->d_subdirs)) {
181                         struct dentry *child;
182
183                         list_for_each_entry_safe(child, tmp_subdir,
184                                                  &dentry->d_subdirs,
185                                                  d_u.d_child) {
186                                 if (child->d_inode == NULL)
187                                         d_lustre_invalidate(child, 1);
188                         }
189                 }
190                 spin_unlock(&dentry->d_lock);
191         }
192         ll_unlock_dcache(dir);
193 }
194
195 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
196                        void *data, int flag)
197 {
198         int rc;
199         struct lustre_handle lockh;
200
201         switch (flag) {
202         case LDLM_CB_BLOCKING:
203                 ldlm_lock2handle(lock, &lockh);
204                 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
205                 if (rc < 0) {
206                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
207                         return rc;
208                 }
209                 break;
210         case LDLM_CB_CANCELING: {
211                 struct inode *inode = ll_inode_from_resource_lock(lock);
212                 struct ll_inode_info *lli;
213                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
214                 struct lu_fid *fid;
215                 ldlm_mode_t mode = lock->l_req_mode;
216
217                 /* Inode is set to lock->l_resource->lr_lvb_inode
218                  * for mdc - bug 24555 */
219                 LASSERT(lock->l_ast_data == NULL);
220
221                 /* Invalidate all dentries associated with this inode */
222                 if (inode == NULL)
223                         break;
224
225                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
226
227                 if (bits & MDS_INODELOCK_XATTR)
228                         ll_xattr_cache_destroy(inode);
229
230                 /* For OPEN locks we differentiate between lock modes
231                  * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
232                 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
233                             MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM))
234                         ll_have_md_lock(inode, &bits, LCK_MINMODE);
235
236                 if (bits & MDS_INODELOCK_OPEN)
237                         ll_have_md_lock(inode, &bits, mode);
238
239                 fid = ll_inode2fid(inode);
240                 if (!fid_res_name_eq(fid, &lock->l_resource->lr_name))
241                         LDLM_ERROR(lock, "data mismatch with object "
242                                    DFID" (%p)", PFID(fid), inode);
243
244                 if (bits & MDS_INODELOCK_OPEN) {
245                         int flags = 0;
246                         switch (lock->l_req_mode) {
247                         case LCK_CW:
248                                 flags = FMODE_WRITE;
249                                 break;
250                         case LCK_PR:
251                                 flags = FMODE_EXEC;
252                                 break;
253                         case LCK_CR:
254                                 flags = FMODE_READ;
255                                 break;
256                         default:
257                                 CERROR("Unexpected lock mode for OPEN lock "
258                                        "%d, inode %ld\n", lock->l_req_mode,
259                                        inode->i_ino);
260                         }
261                         ll_md_real_close(inode, flags);
262                 }
263
264                 lli = ll_i2info(inode);
265                 if (bits & MDS_INODELOCK_LAYOUT) {
266                         struct cl_object_conf conf = { { 0 } };
267
268                         conf.coc_opc = OBJECT_CONF_INVALIDATE;
269                         conf.coc_inode = inode;
270                         rc = ll_layout_conf(inode, &conf);
271                         if (rc)
272                                 CDEBUG(D_INODE, "invaliding layout %d.\n", rc);
273                 }
274
275                 if (bits & MDS_INODELOCK_UPDATE) {
276                         spin_lock(&lli->lli_lock);
277                         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
278                         spin_unlock(&lli->lli_lock);
279                 }
280
281                 if (S_ISDIR(inode->i_mode) &&
282                      (bits & MDS_INODELOCK_UPDATE)) {
283                         CDEBUG(D_INODE, "invalidating inode %lu\n",
284                                inode->i_ino);
285                         truncate_inode_pages(inode->i_mapping, 0);
286                         ll_invalidate_negative_children(inode);
287                 }
288
289                 if (inode->i_sb->s_root &&
290                     inode != inode->i_sb->s_root->d_inode &&
291                     (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)))
292                         ll_invalidate_aliases(inode);
293                 iput(inode);
294                 break;
295         }
296         default:
297                 LBUG();
298         }
299
300         return 0;
301 }
302
303 __u32 ll_i2suppgid(struct inode *i)
304 {
305         if (in_group_p(i->i_gid))
306                 return (__u32)from_kgid(&init_user_ns, i->i_gid);
307         else
308                 return (__u32)(-1);
309 }
310
311 /* Pack the required supplementary groups into the supplied groups array.
312  * If we don't need to use the groups from the target inode(s) then we
313  * instead pack one or more groups from the user's supplementary group
314  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
315 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
316 {
317 #if 0
318         int i;
319 #endif
320
321         LASSERT(i1 != NULL);
322         LASSERT(suppgids != NULL);
323
324         suppgids[0] = ll_i2suppgid(i1);
325
326         if (i2)
327                 suppgids[1] = ll_i2suppgid(i2);
328                 else
329                         suppgids[1] = -1;
330
331 #if 0
332         for (i = 0; i < current_ngroups; i++) {
333                 if (suppgids[0] == -1) {
334                         if (current_groups[i] != suppgids[1])
335                                 suppgids[0] = current_groups[i];
336                         continue;
337                 }
338                 if (suppgids[1] == -1) {
339                         if (current_groups[i] != suppgids[0])
340                                 suppgids[1] = current_groups[i];
341                         continue;
342                 }
343                 break;
344         }
345 #endif
346 }
347
348 /*
349  * try to reuse three types of dentry:
350  * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
351  *    by concurrent .revalidate).
352  * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
353  *    be cleared by others calling d_lustre_revalidate).
354  * 3. DISCONNECTED alias.
355  */
356 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
357 {
358         struct dentry *alias, *discon_alias, *invalid_alias;
359         struct ll_d_hlist_node *p;
360
361         if (ll_d_hlist_empty(&inode->i_dentry))
362                 return NULL;
363
364         discon_alias = invalid_alias = NULL;
365
366         ll_lock_dcache(inode);
367         ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) {
368                 LASSERT(alias != dentry);
369
370                 spin_lock(&alias->d_lock);
371                 if (alias->d_flags & DCACHE_DISCONNECTED)
372                         /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
373                         discon_alias = alias;
374                 else if (alias->d_parent == dentry->d_parent         &&
375                          alias->d_name.hash == dentry->d_name.hash       &&
376                          alias->d_name.len == dentry->d_name.len         &&
377                          memcmp(alias->d_name.name, dentry->d_name.name,
378                                 dentry->d_name.len) == 0)
379                         invalid_alias = alias;
380                 spin_unlock(&alias->d_lock);
381
382                 if (invalid_alias)
383                         break;
384         }
385         alias = invalid_alias ?: discon_alias ?: NULL;
386         if (alias) {
387                 spin_lock(&alias->d_lock);
388                 dget_dlock(alias);
389                 spin_unlock(&alias->d_lock);
390         }
391         ll_unlock_dcache(inode);
392
393         return alias;
394 }
395
396 /*
397  * Similar to d_splice_alias(), but lustre treats invalid alias
398  * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
399  */
400 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
401 {
402         struct dentry *new;
403
404         if (inode) {
405                 new = ll_find_alias(inode, de);
406                 if (new) {
407                         ll_dops_init(new, 1, 1);
408                         d_move(new, de);
409                         iput(inode);
410                         CDEBUG(D_DENTRY,
411                                "Reuse dentry %p inode %p refc %d flags %#x\n",
412                               new, new->d_inode, d_count(new), new->d_flags);
413                         return new;
414                 }
415         }
416         ll_dops_init(de, 1, 1);
417         __d_lustre_invalidate(de);
418         d_add(de, inode);
419         CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
420                de, de->d_inode, d_count(de), de->d_flags);
421         return de;
422 }
423
424 int ll_lookup_it_finish(struct ptlrpc_request *request,
425                         struct lookup_intent *it, void *data)
426 {
427         struct it_cb_data *icbd = data;
428         struct dentry **de = icbd->icbd_childp;
429         struct inode *parent = icbd->icbd_parent;
430         struct inode *inode = NULL;
431         __u64 bits = 0;
432         int rc;
433
434         /* NB 1 request reference will be taken away by ll_intent_lock()
435          * when I return */
436         CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
437                it->d.lustre.it_disposition);
438         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
439                 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
440                 if (rc)
441                         return rc;
442
443                 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
444
445                 /* We used to query real size from OSTs here, but actually
446                    this is not needed. For stat() calls size would be updated
447                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
448                    2.4 and
449                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
450                    Everybody else who needs correct file size would call
451                    ll_glimpse_size or some equivalent themselves anyway.
452                    Also see bug 7198. */
453         }
454
455         /* Only hash *de if it is unhashed (new dentry).
456          * Atoimc_open may passin hashed dentries for open.
457          */
458         if (d_unhashed(*de))
459                 *de = ll_splice_alias(inode, *de);
460
461         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
462                 /* we have lookup look - unhide dentry */
463                 if (bits & MDS_INODELOCK_LOOKUP)
464                         d_lustre_revalidate(*de);
465         } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
466                 /* If file created on server, don't depend on parent UPDATE
467                  * lock to unhide it. It is left hidden and next lookup can
468                  * find it in ll_splice_alias.
469                  */
470                 /* Check that parent has UPDATE lock. */
471                 struct lookup_intent parent_it = {
472                                         .it_op = IT_GETATTR,
473                                         .d.lustre.it_lock_handle = 0 };
474
475                 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it,
476                                        &ll_i2info(parent)->lli_fid, NULL)) {
477                         d_lustre_revalidate(*de);
478                         ll_intent_release(&parent_it);
479                 }
480         }
481
482         return 0;
483 }
484
485 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
486                                    struct lookup_intent *it, int lookup_flags)
487 {
488         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
489         struct dentry *save = dentry, *retval;
490         struct ptlrpc_request *req = NULL;
491         struct md_op_data *op_data;
492         struct it_cb_data icbd;
493         __u32 opc;
494         int rc;
495
496         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
497                 return ERR_PTR(-ENAMETOOLONG);
498
499         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
500                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
501                parent->i_generation, parent, LL_IT2STR(it));
502
503         if (d_mountpoint(dentry))
504                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
505
506         ll_frob_intent(&it, &lookup_it);
507
508         /* As do_lookup is called before follow_mount, root dentry may be left
509          * not valid, revalidate it here. */
510         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
511             (it->it_op & (IT_OPEN | IT_CREAT))) {
512                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
513                                             MDS_INODELOCK_LOOKUP);
514                 if (rc)
515                         return ERR_PTR(rc);
516         }
517
518         if (it->it_op == IT_GETATTR) {
519                 rc = ll_statahead_enter(parent, &dentry, 0);
520                 if (rc == 1) {
521                         if (dentry == save)
522                                 GOTO(out, retval = NULL);
523                         GOTO(out, retval = dentry);
524                 }
525         }
526
527         icbd.icbd_childp = &dentry;
528         icbd.icbd_parent = parent;
529
530         if (it->it_op & IT_CREAT)
531                 opc = LUSTRE_OPC_CREATE;
532         else
533                 opc = LUSTRE_OPC_ANY;
534
535         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
536                                      dentry->d_name.len, lookup_flags, opc,
537                                      NULL);
538         if (IS_ERR(op_data))
539                 return (void *)op_data;
540
541         /* enforce umask if acl disabled or MDS doesn't support umask */
542         if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
543                 it->it_create_mode &= ~current_umask();
544
545         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
546                             lookup_flags, &req, ll_md_blocking_ast, 0);
547         ll_finish_md_op_data(op_data);
548         if (rc < 0)
549                 GOTO(out, retval = ERR_PTR(rc));
550
551         rc = ll_lookup_it_finish(req, it, &icbd);
552         if (rc != 0) {
553                 ll_intent_release(it);
554                 GOTO(out, retval = ERR_PTR(rc));
555         }
556
557         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
558             !S_ISREG(dentry->d_inode->i_mode) &&
559             !S_ISDIR(dentry->d_inode->i_mode)) {
560                 ll_release_openhandle(dentry, it);
561         }
562         ll_lookup_finish_locks(it, dentry);
563
564         if (dentry == save)
565                 GOTO(out, retval = NULL);
566         else
567                 GOTO(out, retval = dentry);
568  out:
569         if (req)
570                 ptlrpc_req_finished(req);
571         if (it->it_op == IT_GETATTR && (retval == NULL || retval == dentry))
572                 ll_statahead_mark(parent, dentry);
573         return retval;
574 }
575
576 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
577                                    unsigned int flags)
578 {
579         struct lookup_intent *itp, it = { .it_op = IT_GETATTR };
580         struct dentry *de;
581
582         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),flags=%u\n",
583                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
584                parent->i_generation, parent, flags);
585
586         /* Optimize away (CREATE && !OPEN). Let .create handle the race. */
587         if ((flags & LOOKUP_CREATE ) && !(flags & LOOKUP_OPEN)) {
588                 ll_dops_init(dentry, 1, 1);
589                 __d_lustre_invalidate(dentry);
590                 d_add(dentry, NULL);
591                 return NULL;
592         }
593
594         if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
595                 itp = NULL;
596         else
597                 itp = &it;
598         de = ll_lookup_it(parent, dentry, itp, 0);
599
600         if (itp != NULL)
601                 ll_intent_release(itp);
602
603         return de;
604 }
605
606 /*
607  * For cached negative dentry and new dentry, handle lookup/create/open
608  * together.
609  */
610 static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
611                           struct file *file, unsigned open_flags,
612                           umode_t mode, int *opened)
613 {
614         struct lookup_intent *it;
615         struct dentry *de;
616         long long lookup_flags = LOOKUP_OPEN;
617         int rc = 0;
618
619         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),file %p,"
620                            "open_flags %x,mode %x opened %d\n",
621                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
622                dir->i_generation, dir, file, open_flags, mode, *opened);
623
624         OBD_ALLOC(it, sizeof(*it));
625         if (!it)
626                 return -ENOMEM;
627
628         it->it_op = IT_OPEN;
629         if (open_flags & O_CREAT) {
630                 it->it_op |= IT_CREAT;
631                 lookup_flags |= LOOKUP_CREATE;
632         }
633         it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
634         it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
635
636         /* Dentry added to dcache tree in ll_lookup_it */
637         de = ll_lookup_it(dir, dentry, it, lookup_flags);
638         if (IS_ERR(de))
639                 rc = PTR_ERR(de);
640         else if (de != NULL)
641                 dentry = de;
642
643         if (!rc) {
644                 if (it_disposition(it, DISP_OPEN_CREATE)) {
645                         /* Dentry instantiated in ll_create_it. */
646                         rc = ll_create_it(dir, dentry, mode, it);
647                         if (rc) {
648                                 /* We dget in ll_splice_alias. */
649                                 if (de != NULL)
650                                         dput(de);
651                                 goto out_release;
652                         }
653
654                         *opened |= FILE_CREATED;
655                 }
656                 if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN)) {
657                         /* Open dentry. */
658                         if (S_ISFIFO(dentry->d_inode->i_mode)) {
659                                 /* We cannot call open here as it would
660                                  * deadlock.
661                                  */
662                                 if (it_disposition(it, DISP_ENQ_OPEN_REF))
663                                         ptlrpc_req_finished(
664                                                        (struct ptlrpc_request *)
665                                                           it->d.lustre.it_data);
666                                 rc = finish_no_open(file, de);
667                         } else {
668                                 file->private_data = it;
669                                 rc = finish_open(file, dentry, NULL, opened);
670                                 /* We dget in ll_splice_alias. finish_open takes
671                                  * care of dget for fd open.
672                                  */
673                                 if (de != NULL)
674                                         dput(de);
675                         }
676                 } else {
677                         rc = finish_no_open(file, de);
678                 }
679         }
680
681 out_release:
682         ll_intent_release(it);
683         OBD_FREE(it, sizeof(*it));
684
685         return rc;
686 }
687
688
689 /* We depend on "mode" being set with the proper file type/umask by now */
690 static struct inode *ll_create_node(struct inode *dir, const char *name,
691                                     int namelen, const void *data, int datalen,
692                                     int mode, __u64 extra,
693                                     struct lookup_intent *it)
694 {
695         struct inode *inode = NULL;
696         struct ptlrpc_request *request = NULL;
697         struct ll_sb_info *sbi = ll_i2sbi(dir);
698         int rc;
699
700         LASSERT(it && it->d.lustre.it_disposition);
701
702         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
703         request = it->d.lustre.it_data;
704         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
705         rc = ll_prep_inode(&inode, request, dir->i_sb, it);
706         if (rc)
707                 GOTO(out, inode = ERR_PTR(rc));
708
709         LASSERT(ll_d_hlist_empty(&inode->i_dentry));
710
711         /* We asked for a lock on the directory, but were granted a
712          * lock on the inode.  Since we finally have an inode pointer,
713          * stuff it in the lock. */
714         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
715                inode, inode->i_ino, inode->i_generation);
716         ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
717  out:
718         ptlrpc_req_finished(request);
719         return inode;
720 }
721
722 /*
723  * By the time this is called, we already have created the directory cache
724  * entry for the new file, but it is so far negative - it has no inode.
725  *
726  * We defer creating the OBD object(s) until open, to keep the intent and
727  * non-intent code paths similar, and also because we do not have the MDS
728  * inode number before calling ll_create_node() (which is needed for LOV),
729  * so we would need to do yet another RPC to the MDS to store the LOV EA
730  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
731  * lmm_size in datalen (the MDS still has code which will handle that).
732  *
733  * If the create succeeds, we fill in the inode information
734  * with d_instantiate().
735  */
736 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
737                         struct lookup_intent *it)
738 {
739         struct inode *inode;
740         int rc = 0;
741
742         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
743                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
744                dir->i_generation, dir, LL_IT2STR(it));
745
746         rc = it_open_error(DISP_OPEN_CREATE, it);
747         if (rc)
748                 return rc;
749
750         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
751                                NULL, 0, mode, 0, it);
752         if (IS_ERR(inode))
753                 return PTR_ERR(inode);
754
755         if (filename_is_volatile(dentry->d_name.name, dentry->d_name.len, NULL))
756                 ll_i2info(inode)->lli_volatile = true;
757
758         d_instantiate(dentry, inode);
759         return 0;
760 }
761
762 static void ll_update_times(struct ptlrpc_request *request,
763                             struct inode *inode)
764 {
765         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
766                                                        &RMF_MDT_BODY);
767
768         LASSERT(body);
769         if (body->valid & OBD_MD_FLMTIME &&
770             body->mtime > LTIME_S(inode->i_mtime)) {
771                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
772                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
773                 LTIME_S(inode->i_mtime) = body->mtime;
774         }
775         if (body->valid & OBD_MD_FLCTIME &&
776             body->ctime > LTIME_S(inode->i_ctime))
777                 LTIME_S(inode->i_ctime) = body->ctime;
778 }
779
780 static int ll_new_node(struct inode *dir, struct qstr *name,
781                        const char *tgt, int mode, int rdev,
782                        struct dentry *dchild, __u32 opc)
783 {
784         struct ptlrpc_request *request = NULL;
785         struct md_op_data *op_data;
786         struct inode *inode = NULL;
787         struct ll_sb_info *sbi = ll_i2sbi(dir);
788         int tgt_len = 0;
789         int err;
790
791         if (unlikely(tgt != NULL))
792                 tgt_len = strlen(tgt) + 1;
793
794         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
795                                      name->len, 0, opc, NULL);
796         if (IS_ERR(op_data))
797                 GOTO(err_exit, err = PTR_ERR(op_data));
798
799         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
800                         from_kuid(&init_user_ns, current_fsuid()),
801                         from_kgid(&init_user_ns, current_fsgid()),
802                         cfs_curproc_cap_pack(), rdev, &request);
803         ll_finish_md_op_data(op_data);
804         if (err)
805                 GOTO(err_exit, err);
806
807         ll_update_times(request, dir);
808
809         if (dchild) {
810                 err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
811                 if (err)
812                      GOTO(err_exit, err);
813
814                 d_instantiate(dchild, inode);
815         }
816 err_exit:
817         ptlrpc_req_finished(request);
818
819         return err;
820 }
821
822 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
823                             unsigned rdev, struct dentry *dchild)
824 {
825         int err;
826
827         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
828                name->len, name->name, dir->i_ino, dir->i_generation, dir,
829                mode, rdev);
830
831         if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
832                 mode &= ~current_umask();
833
834         switch (mode & S_IFMT) {
835         case 0:
836                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
837         case S_IFREG:
838         case S_IFCHR:
839         case S_IFBLK:
840         case S_IFIFO:
841         case S_IFSOCK:
842                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
843                                   LUSTRE_OPC_MKNOD);
844                 break;
845         case S_IFDIR:
846                 err = -EPERM;
847                 break;
848         default:
849                 err = -EINVAL;
850         }
851
852         if (!err)
853                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD, 1);
854
855         return err;
856 }
857
858 /*
859  * Plain create. Intent create is handled in atomic_open.
860  */
861 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
862                         umode_t mode, bool want_excl)
863 {
864         int rc;
865
866         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),"
867                            "flags=%u, excl=%d\n",
868                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
869                dir->i_generation, dir, mode, want_excl);
870
871         rc = ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
872
873         ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
874
875         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, unhashed %d\n",
876                dentry->d_name.len, dentry->d_name.name, d_unhashed(dentry));
877
878         return rc;
879 }
880
881 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
882                               const char *tgt, struct dentry *dchild)
883 {
884         int err;
885
886         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
887                name->len, name->name, dir->i_ino, dir->i_generation,
888                dir, 3000, tgt);
889
890         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
891                           0, dchild, LUSTRE_OPC_SYMLINK);
892
893         if (!err)
894                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
895
896         return err;
897 }
898
899 static int ll_link_generic(struct inode *src,  struct inode *dir,
900                            struct qstr *name, struct dentry *dchild)
901 {
902         struct ll_sb_info *sbi = ll_i2sbi(dir);
903         struct ptlrpc_request *request = NULL;
904         struct md_op_data *op_data;
905         int err;
906
907         CDEBUG(D_VFSTRACE,
908                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
909                src->i_ino, src->i_generation, src, dir->i_ino,
910                dir->i_generation, dir, name->len, name->name);
911
912         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
913                                      0, LUSTRE_OPC_ANY, NULL);
914         if (IS_ERR(op_data))
915                 return PTR_ERR(op_data);
916
917         err = md_link(sbi->ll_md_exp, op_data, &request);
918         ll_finish_md_op_data(op_data);
919         if (err)
920                 GOTO(out, err);
921
922         ll_update_times(request, dir);
923         ll_stats_ops_tally(sbi, LPROC_LL_LINK, 1);
924 out:
925         ptlrpc_req_finished(request);
926         return err;
927 }
928
929 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
930                             int mode, struct dentry *dchild)
931
932 {
933         int err;
934
935         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
936                name->len, name->name, dir->i_ino, dir->i_generation, dir);
937
938         if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
939                 mode &= ~current_umask();
940         mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
941         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
942
943         if (!err)
944                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
945
946         return err;
947 }
948
949 /* Try to find the child dentry by its name.
950    If found, put the result fid into @fid. */
951 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
952                              struct lu_fid *fid)
953 {
954         struct dentry *parent, *child;
955
956         parent = ll_d_hlist_entry(dir->i_dentry, struct dentry, d_alias);
957         child = d_lookup(parent, name);
958         if (child) {
959                 if (child->d_inode)
960                         *fid = *ll_inode2fid(child->d_inode);
961                 dput(child);
962         }
963 }
964
965 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
966                             struct dentry *dchild, struct qstr *name)
967 {
968         struct ptlrpc_request *request = NULL;
969         struct md_op_data *op_data;
970         int rc;
971
972         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
973                name->len, name->name, dir->i_ino, dir->i_generation, dir);
974
975         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
976                 return -EBUSY;
977
978         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
979                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
980         if (IS_ERR(op_data))
981                 return PTR_ERR(op_data);
982
983         ll_get_child_fid(dir, name, &op_data->op_fid3);
984         op_data->op_fid2 = op_data->op_fid3;
985         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
986         ll_finish_md_op_data(op_data);
987         if (rc == 0) {
988                 ll_update_times(request, dir);
989                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
990         }
991
992         ptlrpc_req_finished(request);
993         return rc;
994 }
995
996 /**
997  * Remove dir entry
998  **/
999 int ll_rmdir_entry(struct inode *dir, char *name, int namelen)
1000 {
1001         struct ptlrpc_request *request = NULL;
1002         struct md_op_data *op_data;
1003         int rc;
1004
1005         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1006                namelen, name, dir->i_ino, dir->i_generation, dir);
1007
1008         op_data = ll_prep_md_op_data(NULL, dir, NULL, name, strlen(name),
1009                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1010         if (IS_ERR(op_data))
1011                 return PTR_ERR(op_data);
1012         op_data->op_cli_flags |= CLI_RM_ENTRY;
1013         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1014         ll_finish_md_op_data(op_data);
1015         if (rc == 0) {
1016                 ll_update_times(request, dir);
1017                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
1018         }
1019
1020         ptlrpc_req_finished(request);
1021         return rc;
1022 }
1023
1024 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1025 {
1026         struct mdt_body *body;
1027         struct lov_mds_md *eadata;
1028         struct lov_stripe_md *lsm = NULL;
1029         struct obd_trans_info oti = { 0 };
1030         struct obdo *oa;
1031         struct obd_capa *oc = NULL;
1032         int rc;
1033
1034         /* req is swabbed so this is safe */
1035         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1036         if (!(body->valid & OBD_MD_FLEASIZE))
1037                 return 0;
1038
1039         if (body->eadatasize == 0) {
1040                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1041                 GOTO(out, rc = -EPROTO);
1042         }
1043
1044         /* The MDS sent back the EA because we unlinked the last reference
1045          * to this file. Use this EA to unlink the objects on the OST.
1046          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1047          * check it is complete and sensible. */
1048         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1049                                               body->eadatasize);
1050         LASSERT(eadata != NULL);
1051
1052         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1053         if (rc < 0) {
1054                 CERROR("obd_unpackmd: %d\n", rc);
1055                 GOTO(out, rc);
1056         }
1057         LASSERT(rc >= sizeof(*lsm));
1058
1059         OBDO_ALLOC(oa);
1060         if (oa == NULL)
1061                 GOTO(out_free_memmd, rc = -ENOMEM);
1062
1063         oa->o_oi = lsm->lsm_oi;
1064         oa->o_mode = body->mode & S_IFMT;
1065         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1066
1067         if (body->valid & OBD_MD_FLCOOKIE) {
1068                 oa->o_valid |= OBD_MD_FLCOOKIE;
1069                 oti.oti_logcookies =
1070                         req_capsule_server_sized_get(&request->rq_pill,
1071                                                      &RMF_LOGCOOKIES,
1072                                                    sizeof(struct llog_cookie) *
1073                                                      lsm->lsm_stripe_count);
1074                 if (oti.oti_logcookies == NULL) {
1075                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1076                         body->valid &= ~OBD_MD_FLCOOKIE;
1077                 }
1078         }
1079
1080         if (body->valid & OBD_MD_FLOSSCAPA) {
1081                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1082                 if (rc)
1083                         GOTO(out_free_memmd, rc);
1084         }
1085
1086         rc = obd_destroy(NULL, ll_i2dtexp(dir), oa, lsm, &oti,
1087                          ll_i2mdexp(dir), oc);
1088         capa_put(oc);
1089         if (rc)
1090                 CERROR("obd destroy objid "DOSTID" error %d\n",
1091                        POSTID(&lsm->lsm_oi), rc);
1092 out_free_memmd:
1093         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1094         OBDO_FREE(oa);
1095 out:
1096         return rc;
1097 }
1098
1099 /* ll_unlink_generic() doesn't update the inode with the new link count.
1100  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1101  * is any lock existing. They will recycle dentries and inodes based upon locks
1102  * too. b=20433 */
1103 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1104                              struct dentry *dchild, struct qstr *name)
1105 {
1106         struct ptlrpc_request *request = NULL;
1107         struct md_op_data *op_data;
1108         int rc;
1109         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1110                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1111
1112         /*
1113          * XXX: unlink bind mountpoint maybe call to here,
1114          * just check it as vfs_unlink does.
1115          */
1116         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1117                 return -EBUSY;
1118
1119         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1120                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1121         if (IS_ERR(op_data))
1122                 return PTR_ERR(op_data);
1123
1124         ll_get_child_fid(dir, name, &op_data->op_fid3);
1125         op_data->op_fid2 = op_data->op_fid3;
1126         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1127         ll_finish_md_op_data(op_data);
1128         if (rc)
1129                 GOTO(out, rc);
1130
1131         ll_update_times(request, dir);
1132         ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
1133
1134         rc = ll_objects_destroy(request, dir);
1135  out:
1136         ptlrpc_req_finished(request);
1137         return rc;
1138 }
1139
1140 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1141                              struct dentry *src_dchild, struct qstr *src_name,
1142                              struct inode *tgt, struct dentry *tgt_dparent,
1143                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1144 {
1145         struct ptlrpc_request *request = NULL;
1146         struct ll_sb_info *sbi = ll_i2sbi(src);
1147         struct md_op_data *op_data;
1148         int err;
1149
1150         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1151                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1152                src->i_ino, src->i_generation, src, tgt_name->len,
1153                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1154
1155         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1156             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1157                 return -EBUSY;
1158
1159         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1160                                      LUSTRE_OPC_ANY, NULL);
1161         if (IS_ERR(op_data))
1162                 return PTR_ERR(op_data);
1163
1164         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1165         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1166         err = md_rename(sbi->ll_md_exp, op_data,
1167                         src_name->name, src_name->len,
1168                         tgt_name->name, tgt_name->len, &request);
1169         ll_finish_md_op_data(op_data);
1170         if (!err) {
1171                 ll_update_times(request, src);
1172                 ll_update_times(request, tgt);
1173                 ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
1174                 err = ll_objects_destroy(request, src);
1175         }
1176
1177         ptlrpc_req_finished(request);
1178
1179         return err;
1180 }
1181
1182 static int ll_mknod(struct inode *dir, struct dentry *dchild, ll_umode_t mode,
1183                     dev_t rdev)
1184 {
1185         return ll_mknod_generic(dir, &dchild->d_name, mode,
1186                                 old_encode_dev(rdev), dchild);
1187 }
1188
1189 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1190 {
1191         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1192 }
1193
1194 static int ll_mkdir(struct inode *dir, struct dentry *dentry, ll_umode_t mode)
1195 {
1196         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1197 }
1198
1199 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1200 {
1201         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1202 }
1203
1204 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1205                       const char *oldname)
1206 {
1207         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1208 }
1209
1210 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1211                    struct dentry *new_dentry)
1212 {
1213         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1214                                new_dentry);
1215 }
1216
1217 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1218                      struct inode *new_dir, struct dentry *new_dentry)
1219 {
1220         int err;
1221         err = ll_rename_generic(old_dir, NULL,
1222                                  old_dentry, &old_dentry->d_name,
1223                                  new_dir, NULL, new_dentry,
1224                                  &new_dentry->d_name);
1225         if (!err) {
1226                         d_move(old_dentry, new_dentry);
1227         }
1228         return err;
1229 }
1230
1231 struct inode_operations ll_dir_inode_operations = {
1232         .mknod        = ll_mknod,
1233         .atomic_open        = ll_atomic_open,
1234         .lookup      = ll_lookup_nd,
1235         .create      = ll_create_nd,
1236         /* We need all these non-raw things for NFSD, to not patch it. */
1237         .unlink      = ll_unlink,
1238         .mkdir        = ll_mkdir,
1239         .rmdir        = ll_rmdir,
1240         .symlink            = ll_symlink,
1241         .link          = ll_link,
1242         .rename      = ll_rename,
1243         .setattr            = ll_setattr,
1244         .getattr            = ll_getattr,
1245         .permission      = ll_inode_permission,
1246         .setxattr          = ll_setxattr,
1247         .getxattr          = ll_getxattr,
1248         .listxattr        = ll_listxattr,
1249         .removexattr    = ll_removexattr,
1250         .get_acl            = ll_get_acl,
1251 };
1252
1253 struct inode_operations ll_special_inode_operations = {
1254         .setattr        = ll_setattr,
1255         .getattr        = ll_getattr,
1256         .permission     = ll_inode_permission,
1257         .setxattr       = ll_setxattr,
1258         .getxattr       = ll_getxattr,
1259         .listxattr      = ll_listxattr,
1260         .removexattr    = ll_removexattr,
1261         .get_acl            = ll_get_acl,
1262 };