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staging: lustre: remove RETURN macro
[deliverable/linux.git] / drivers / staging / lustre / lustre / llite / namei.c
CommitLineData
d7e09d03
PT		 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
54static 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 */
61static 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
78int ll_unlock(__u32 mode, struct lustre_handle *lockh)
79{
d7e09d03
PT		 80 ldlm_lock_decref(lockh, mode);
81
0a3bdb00 82 return 0;
d7e09d03
PT		 83}
84
85
86/* called from iget5_locked->find_inode() under inode_lock spinlock */
87static 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
103static 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 */
136struct inode *ll_iget(struct super_block *sb, ino_t hash,
137 struct lustre_md *md)
138{
139 struct inode *inode;
d7e09d03
PT		 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 }
0a3bdb00 169 return inode;
d7e09d03
PT		 170}
171
172static 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)
b1d2a127 187 d_lustre_invalidate(child, 1);
d7e09d03
PT		 188 }
189 }
190 spin_unlock(&dentry->d_lock);
191 }
192 ll_unlock_dcache(dir);
193}
194
195int 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;
d7e09d03
PT		 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);
0a3bdb00 207 return rc;
d7e09d03
PT		 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 /* For OPEN locks we differentiate between lock modes
227 * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
228 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
229 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM))
230 ll_have_md_lock(inode, &bits, LCK_MINMODE);
231
232 if (bits & MDS_INODELOCK_OPEN)
233 ll_have_md_lock(inode, &bits, mode);
234
235 fid = ll_inode2fid(inode);
236 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
237 lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
238 lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
239 LDLM_ERROR(lock, "data mismatch with object "
240 DFID" (%p)", PFID(fid), inode);
241 }
242
243 if (bits & MDS_INODELOCK_OPEN) {
244 int flags = 0;
245 switch (lock->l_req_mode) {
246 case LCK_CW:
247 flags = FMODE_WRITE;
248 break;
249 case LCK_PR:
250 flags = FMODE_EXEC;
251 break;
252 case LCK_CR:
253 flags = FMODE_READ;
254 break;
255 default:
256 CERROR("Unexpected lock mode for OPEN lock "
257 "%d, inode %ld\n", lock->l_req_mode,
258 inode->i_ino);
259 }
260 ll_md_real_close(inode, flags);
261 }
262
263 lli = ll_i2info(inode);
264 if (bits & MDS_INODELOCK_LAYOUT) {
265 struct cl_object_conf conf = { { 0 } };
266
267 conf.coc_opc = OBJECT_CONF_INVALIDATE;
268 conf.coc_inode = inode;
269 rc = ll_layout_conf(inode, &conf);
270 if (rc)
271 CDEBUG(D_INODE, "invaliding layout %d.\n", rc);
272 }
273
ae5ef67b
SB		 274 if (bits & MDS_INODELOCK_UPDATE) {
275 spin_lock(&lli->lli_lock);
d7e09d03 276 lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
ae5ef67b
SB		 277 spin_unlock(&lli->lli_lock);
278 }
d7e09d03
PT		 279
280 if (S_ISDIR(inode->i_mode) &&
281 (bits & MDS_INODELOCK_UPDATE)) {
282 CDEBUG(D_INODE, "invalidating inode %lu\n",
283 inode->i_ino);
284 truncate_inode_pages(inode->i_mapping, 0);
285 ll_invalidate_negative_children(inode);
286 }
287
288 if (inode->i_sb->s_root &&
289 inode != inode->i_sb->s_root->d_inode &&
290 (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)))
291 ll_invalidate_aliases(inode);
292 iput(inode);
293 break;
294 }
295 default:
296 LBUG();
297 }
298
0a3bdb00 299 return 0;
d7e09d03
PT		 300}
301
302__u32 ll_i2suppgid(struct inode *i)
303{
4b1a25f0
PT		 304 if (in_group_p(i->i_gid))
305 return (__u32)from_kgid(&init_user_ns, i->i_gid);
d7e09d03
PT		 306 else
307 return (__u32)(-1);
308}
309
310/* Pack the required supplementary groups into the supplied groups array.
311 * If we don't need to use the groups from the target inode(s) then we
312 * instead pack one or more groups from the user's supplementary group
313 * array in case it might be useful. Not needed if doing an MDS-side upcall. */
314void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
315{
316#if 0
317 int i;
318#endif
319
320 LASSERT(i1 != NULL);
321 LASSERT(suppgids != NULL);
322
323 suppgids[0] = ll_i2suppgid(i1);
324
325 if (i2)
326 suppgids[1] = ll_i2suppgid(i2);
327 else
328 suppgids[1] = -1;
329
330#if 0
331 for (i = 0; i < current_ngroups; i++) {
332 if (suppgids[0] == -1) {
333 if (current_groups[i] != suppgids[1])
334 suppgids[0] = current_groups[i];
335 continue;
336 }
337 if (suppgids[1] == -1) {
338 if (current_groups[i] != suppgids[0])
339 suppgids[1] = current_groups[i];
340 continue;
341 }
342 break;
343 }
344#endif
345}
346
347/*
348 * try to reuse three types of dentry:
349 * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
350 * by concurrent .revalidate).
351 * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
352 * be cleared by others calling d_lustre_revalidate).
353 * 3. DISCONNECTED alias.
354 */
355static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
356{
357 struct dentry *alias, *discon_alias, *invalid_alias;
358 struct ll_d_hlist_node *p;
359
360 if (ll_d_hlist_empty(&inode->i_dentry))
361 return NULL;
362
363 discon_alias = invalid_alias = NULL;
364
365 ll_lock_dcache(inode);
366 ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) {
367 LASSERT(alias != dentry);
368
369 spin_lock(&alias->d_lock);
370 if (alias->d_flags & DCACHE_DISCONNECTED)
371 /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
372 discon_alias = alias;
373 else if (alias->d_parent == dentry->d_parent &&
374 alias->d_name.hash == dentry->d_name.hash &&
375 alias->d_name.len == dentry->d_name.len &&
376 memcmp(alias->d_name.name, dentry->d_name.name,
377 dentry->d_name.len) == 0)
378 invalid_alias = alias;
379 spin_unlock(&alias->d_lock);
380
381 if (invalid_alias)
382 break;
383 }
384 alias = invalid_alias ?: discon_alias ?: NULL;
385 if (alias) {
386 spin_lock(&alias->d_lock);
387 dget_dlock(alias);
388 spin_unlock(&alias->d_lock);
389 }
390 ll_unlock_dcache(inode);
391
392 return alias;
393}
394
395/*
396 * Similar to d_splice_alias(), but lustre treats invalid alias
397 * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
398 */
399struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
400{
401 struct dentry *new;
402
403 if (inode) {
404 new = ll_find_alias(inode, de);
405 if (new) {
406 ll_dops_init(new, 1, 1);
407 d_move(new, de);
408 iput(inode);
409 CDEBUG(D_DENTRY,
410 "Reuse dentry %p inode %p refc %d flags %#x\n",
193deee1 411 new, new->d_inode, d_count(new), new->d_flags);
d7e09d03
PT		 412 return new;
413 }
414 }
415 ll_dops_init(de, 1, 1);
416 __d_lustre_invalidate(de);
417 d_add(de, inode);
418 CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
193deee1 419 de, de->d_inode, d_count(de), de->d_flags);
d7e09d03
PT		 420 return de;
421}
422
423int ll_lookup_it_finish(struct ptlrpc_request *request,
424 struct lookup_intent *it, void *data)
425{
426 struct it_cb_data *icbd = data;
427 struct dentry **de = icbd->icbd_childp;
428 struct inode *parent = icbd->icbd_parent;
429 struct inode *inode = NULL;
430 __u64 bits = 0;
431 int rc;
d7e09d03
PT		 432
433 /* NB 1 request reference will be taken away by ll_intent_lock()
434 * when I return */
435 CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
436 it->d.lustre.it_disposition);
437 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
438 rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
439 if (rc)
0a3bdb00 440 return rc;
d7e09d03
PT		 441
442 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
443
444 /* We used to query real size from OSTs here, but actually
445 this is not needed. For stat() calls size would be updated
446 from subsequent do_revalidate()->ll_inode_revalidate_it() in
447 2.4 and
448 vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
449 Everybody else who needs correct file size would call
450 ll_glimpse_size or some equivalent themselves anyway.
451 Also see bug 7198. */
452 }
453
454 /* Only hash *de if it is unhashed (new dentry).
455 * Atoimc_open may passin hashed dentries for open.
456 */
457 if (d_unhashed(*de))
458 *de = ll_splice_alias(inode, *de);
459
460 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
461 /* we have lookup look - unhide dentry */
462 if (bits & MDS_INODELOCK_LOOKUP)
463 d_lustre_revalidate(*de);
464 } else if (!it_disposition(it, DISP_OPEN_CREATE)) {
465 /* If file created on server, don't depend on parent UPDATE
466 * lock to unhide it. It is left hidden and next lookup can
467 * find it in ll_splice_alias.
468 */
469 /* Check that parent has UPDATE lock. */
470 struct lookup_intent parent_it = {
471 .it_op = IT_GETATTR,
472 .d.lustre.it_lock_handle = 0 };
473
474 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it,
475 &ll_i2info(parent)->lli_fid, NULL)) {
476 d_lustre_revalidate(*de);
477 ll_intent_release(&parent_it);
478 }
479 }
480
0a3bdb00 481 return 0;
d7e09d03
PT		 482}
483
484static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
485 struct lookup_intent *it, int lookup_flags)
486{
487 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
488 struct dentry *save = dentry, *retval;
489 struct ptlrpc_request *req = NULL;
490 struct md_op_data *op_data;
491 struct it_cb_data icbd;
492 __u32 opc;
493 int rc;
d7e09d03
PT		 494
495 if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
0a3bdb00 496 return ERR_PTR(-ENAMETOOLONG);
d7e09d03
PT		 497
498 CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
499 dentry->d_name.len, dentry->d_name.name, parent->i_ino,
500 parent->i_generation, parent, LL_IT2STR(it));
501
502 if (d_mountpoint(dentry))
503 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
504
505 ll_frob_intent(&it, &lookup_it);
506
507 /* As do_lookup is called before follow_mount, root dentry may be left
508 * not valid, revalidate it here. */
509 if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
510 (it->it_op & (IT_OPEN | IT_CREAT))) {
511 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
512 MDS_INODELOCK_LOOKUP);
513 if (rc)
0a3bdb00 514 return ERR_PTR(rc);
d7e09d03
PT		 515 }
516
517 if (it->it_op == IT_GETATTR) {
518 rc = ll_statahead_enter(parent, &dentry, 0);
519 if (rc == 1) {
520 if (dentry == save)
521 GOTO(out, retval = NULL);
522 GOTO(out, retval = dentry);
523 }
524 }
525
526 icbd.icbd_childp = &dentry;
527 icbd.icbd_parent = parent;
528
529 if (it->it_op & IT_CREAT ||
530 (it->it_op & IT_OPEN && it->it_create_mode & O_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))
0a3bdb00 539 return (void *)op_data;
d7e09d03
PT		 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
576static 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 */
610static 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;
d7e09d03
PT		 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)
0a3bdb00 626 return -ENOMEM;
d7e09d03
PT		 627
628 it->it_op = IT_OPEN;
629 if (mode) {
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
681out_release:
682 ll_intent_release(it);
683 OBD_FREE(it, sizeof(*it));
684
0a3bdb00 685 return rc;
d7e09d03
PT		 686}
687
688
689/* We depend on "mode" being set with the proper file type/umask by now */
690static 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;
d7e09d03
PT		 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);
d7e09d03
PT		 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 */
736static 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;
d7e09d03
PT		 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)
0a3bdb00 748 return rc;
d7e09d03
PT		 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))
0a3bdb00 753 return PTR_ERR(inode);
d7e09d03
PT		 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);
0a3bdb00 759 return 0;
d7e09d03
PT		 760}
761
762static 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
780static 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
d7e09d03
PT		 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,
4b1a25f0
PT		 800 from_kuid(&init_user_ns, current_fsuid()),
801 from_kgid(&init_user_ns, current_fsgid()),
d7e09d03
PT		 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 }
d7e09d03
PT		 816err_exit:
817 ptlrpc_req_finished(request);
818
819 return err;
820}
821
822static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
823 unsigned rdev, struct dentry *dchild)
824{
825 int err;
d7e09d03
PT		 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
0a3bdb00 855 return err;
d7e09d03
PT		 856}
857
858/*
859 * Plain create. Intent create is handled in atomic_open.
860 */
861static 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
881static int ll_symlink_generic(struct inode *dir, struct qstr *name,
882 const char *tgt, struct dentry *dchild)
883{
884 int err;
d7e09d03
PT		 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
0a3bdb00 896 return err;
d7e09d03
PT		 897}
898
899static 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
d7e09d03
PT		 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))
0a3bdb00 915 return PTR_ERR(op_data);
d7e09d03
PT		 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);
d7e09d03
PT		 924out:
925 ptlrpc_req_finished(request);
0a3bdb00 926 return err;
d7e09d03
PT		 927}
928
929static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
930 int mode, struct dentry *dchild)
931
932{
933 int err;
d7e09d03
PT		 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
0a3bdb00 946 return err;
d7e09d03
PT		 947}
948
949/* Try to find the child dentry by its name.
950 If found, put the result fid into @fid. */
951static 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
965static 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;
d7e09d03
PT		 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)))
0a3bdb00 976 return -EBUSY;
d7e09d03
PT		 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))
0a3bdb00 981 return PTR_ERR(op_data);
d7e09d03
PT		 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);
0a3bdb00 993 return rc;
d7e09d03
PT		 994}
995
996/**
997 * Remove dir entry
998 **/
999int 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;
d7e09d03
PT		 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))
0a3bdb00 1011 return PTR_ERR(op_data);
d7e09d03
PT		 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);
0a3bdb00 1021 return rc;
d7e09d03
PT		 1022}
1023
1024int 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;
d7e09d03
PT		 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))
0a3bdb00 1037 return 0;
d7e09d03
PT		 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);
1092out_free_memmd:
1093 obd_free_memmd(ll_i2dtexp(dir), &lsm);
1094 OBDO_FREE(oa);
1095out:
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 */
1103static 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;
d7e09d03
PT		 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)))
0a3bdb00 1117 return -EBUSY;
d7e09d03
PT		 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))
0a3bdb00 1122 return PTR_ERR(op_data);
d7e09d03
PT		 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);
0a3bdb00 1137 return rc;
d7e09d03
PT		 1138}
1139
1140static 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;
29aaf496 1149
d7e09d03
PT		 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)))
0a3bdb00 1157 return -EBUSY;
d7e09d03
PT		 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))
0a3bdb00 1162 return PTR_ERR(op_data);
d7e09d03
PT		 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
0a3bdb00 1179 return err;
d7e09d03
PT		 1180}
1181
1182static 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
1189static int ll_unlink(struct inode * dir, struct dentry *dentry)
1190{
1191 return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1192}
1193
1194static 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
1199static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1200{
1201 return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1202}
1203
1204static 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
1210static 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
1217static 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
1231struct 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
1253struct 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};
Linux kernel - Deliverables
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