1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
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
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/osd/osd_handler.c
38 * Top-level entry points into osd module
40 * Author: Nikita Danilov <nikita@clusterfs.com>
44 # define EXPORT_SYMTAB
46 #define DEBUG_SUBSYSTEM S_MDS
48 #include <linux/module.h>
50 /* LUSTRE_VERSION_CODE */
51 #include <lustre_ver.h>
52 /* prerequisite for linux/xattr.h */
53 #include <linux/types.h>
54 /* prerequisite for linux/xattr.h */
56 /* XATTR_{REPLACE,CREATE} */
57 #include <linux/xattr.h>
62 * struct OBD_{ALLOC,FREE}*()
65 #include <obd_support.h>
66 /* struct ptlrpc_thread */
67 #include <lustre_net.h>
70 #include <lustre_fid.h>
72 #include "osd_internal.h"
75 /* llo_* api support */
76 #include <md_object.h>
78 static const char dot[] = ".";
79 static const char dotdot[] = "..";
80 static const char remote_obj_dir[] = "REM_OBJ_DIR";
82 struct osd_directory {
83 struct iam_container od_container;
84 struct iam_descr od_descr;
88 struct dt_object oo_dt;
90 * Inode for file system object represented by this osd_object. This
91 * inode is pinned for the whole duration of lu_object life.
93 * Not modified concurrently (either setup early during object
94 * creation, or assigned by osd_object_create() under write lock).
96 struct inode *oo_inode;
98 * to protect index ops.
100 struct rw_semaphore oo_ext_idx_sem;
101 struct rw_semaphore oo_sem;
102 struct osd_directory *oo_dir;
103 /** protects inode attributes. */
106 * Following two members are used to indicate the presence of dot and
107 * dotdot in the given directory. This is required for interop mode
110 int oo_compat_dot_created;
111 int oo_compat_dotdot_created;
113 const struct lu_env *oo_owner;
114 #ifdef CONFIG_LOCKDEP
115 struct lockdep_map oo_dep_map;
119 static const struct lu_object_operations osd_lu_obj_ops;
120 static const struct lu_device_operations osd_lu_ops;
121 static struct lu_context_key osd_key;
122 static const struct dt_object_operations osd_obj_ops;
123 static const struct dt_object_operations osd_obj_ea_ops;
124 static const struct dt_body_operations osd_body_ops;
125 static const struct dt_index_operations osd_index_iam_ops;
126 static const struct dt_index_operations osd_index_ea_ops;
129 struct thandle ot_super;
131 struct journal_callback ot_jcb;
132 /* Link to the device, for debugging. */
133 struct lu_ref_link *ot_dev_link;
140 static int lu_device_is_osd(const struct lu_device *d)
142 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osd_lu_ops);
145 static struct osd_device *osd_dt_dev(const struct dt_device *d)
147 LASSERT(lu_device_is_osd(&d->dd_lu_dev));
148 return container_of0(d, struct osd_device, od_dt_dev);
151 static struct osd_device *osd_dev(const struct lu_device *d)
153 LASSERT(lu_device_is_osd(d));
154 return osd_dt_dev(container_of0(d, struct dt_device, dd_lu_dev));
157 static struct osd_device *osd_obj2dev(const struct osd_object *o)
159 return osd_dev(o->oo_dt.do_lu.lo_dev);
162 static struct super_block *osd_sb(const struct osd_device *dev)
164 return dev->od_mount->lmi_mnt->mnt_sb;
167 static int osd_object_is_root(const struct osd_object *obj)
169 return osd_sb(osd_obj2dev(obj))->s_root->d_inode == obj->oo_inode;
172 static struct osd_object *osd_obj(const struct lu_object *o)
174 LASSERT(lu_device_is_osd(o->lo_dev));
175 return container_of0(o, struct osd_object, oo_dt.do_lu);
178 static struct osd_object *osd_dt_obj(const struct dt_object *d)
180 return osd_obj(&d->do_lu);
183 static struct lu_device *osd2lu_dev(struct osd_device *osd)
185 return &osd->od_dt_dev.dd_lu_dev;
188 static journal_t *osd_journal(const struct osd_device *dev)
190 return LDISKFS_SB(osd_sb(dev))->s_journal;
193 static int osd_has_index(const struct osd_object *obj)
195 return obj->oo_dt.do_index_ops != NULL;
198 static int osd_object_invariant(const struct lu_object *l)
200 return osd_invariant(osd_obj(l));
203 #ifdef HAVE_QUOTA_SUPPORT
205 osd_push_ctxt(const struct lu_env *env, struct osd_ctxt *save)
207 struct md_ucred *uc = md_ucred(env);
211 save->oc_uid = current->fsuid;
212 save->oc_gid = current->fsgid;
213 save->oc_cap = current->cap_effective;
214 current->fsuid = uc->mu_fsuid;
215 current->fsgid = uc->mu_fsgid;
216 current->cap_effective = uc->mu_cap;
220 osd_pop_ctxt(struct osd_ctxt *save)
222 current->fsuid = save->oc_uid;
223 current->fsgid = save->oc_gid;
224 current->cap_effective = save->oc_cap;
228 static inline struct osd_thread_info *osd_oti_get(const struct lu_env *env)
230 return lu_context_key_get(&env->le_ctx, &osd_key);
234 * Concurrency: doesn't matter
236 static int osd_read_locked(const struct lu_env *env, struct osd_object *o)
238 return osd_oti_get(env)->oti_r_locks > 0;
242 * Concurrency: doesn't matter
244 static int osd_write_locked(const struct lu_env *env, struct osd_object *o)
246 struct osd_thread_info *oti = osd_oti_get(env);
247 return oti->oti_w_locks > 0 && o->oo_owner == env;
251 * Concurrency: doesn't access mutable data
253 static int osd_root_get(const struct lu_env *env,
254 struct dt_device *dev, struct lu_fid *f)
258 inode = osd_sb(osd_dt_dev(dev))->s_root->d_inode;
259 lu_igif_build(f, inode->i_ino, inode->i_generation);
264 * OSD object methods.
268 * Concurrency: no concurrent access is possible that early in object
271 static struct lu_object *osd_object_alloc(const struct lu_env *env,
272 const struct lu_object_header *hdr,
275 struct osd_object *mo;
281 l = &mo->oo_dt.do_lu;
282 dt_object_init(&mo->oo_dt, NULL, d);
283 if (osd_dev(d)->od_iop_mode)
284 mo->oo_dt.do_ops = &osd_obj_ea_ops;
286 mo->oo_dt.do_ops = &osd_obj_ops;
288 l->lo_ops = &osd_lu_obj_ops;
289 init_rwsem(&mo->oo_sem);
290 init_rwsem(&mo->oo_ext_idx_sem);
291 spin_lock_init(&mo->oo_guard);
298 * retrieve object from backend ext fs.
300 static struct inode *osd_iget(struct osd_thread_info *info,
301 struct osd_device *dev,
302 const struct osd_inode_id *id)
304 struct inode *inode = NULL;
306 #ifdef HAVE_EXT4_LDISKFS
307 inode = ldiskfs_iget(osd_sb(dev), id->oii_ino);
309 /* Newer kernels return an error instead of a NULL pointer */
312 inode = iget(osd_sb(dev), id->oii_ino);
315 CERROR("no inode\n");
316 inode = ERR_PTR(-EACCES);
317 } else if (id->oii_gen != OSD_OII_NOGEN &&
318 inode->i_generation != id->oii_gen) {
320 inode = ERR_PTR(-ESTALE);
321 } else if (inode->i_nlink == 0) {
322 /* due to parallel readdir and unlink,
323 * we can have dead inode here. */
324 CWARN("stale inode\n");
325 make_bad_inode(inode);
327 inode = ERR_PTR(-ESTALE);
328 } else if (is_bad_inode(inode)) {
329 CERROR("bad inode %lx\n",inode->i_ino);
331 inode = ERR_PTR(-ENOENT);
336 static int osd_fid_lookup(const struct lu_env *env,
337 struct osd_object *obj, const struct lu_fid *fid)
339 struct osd_thread_info *info;
340 struct lu_device *ldev = obj->oo_dt.do_lu.lo_dev;
341 struct osd_device *dev;
342 struct osd_inode_id *id;
347 LINVRNT(osd_invariant(obj));
348 LASSERT(obj->oo_inode == NULL);
349 LASSERT(fid_is_sane(fid));
351 * This assertion checks that osd layer sees only local
352 * fids. Unfortunately it is somewhat expensive (does a
353 * cache-lookup). Disabling it for production/acceptance-testing.
355 LASSERT(1 || fid_is_local(env, ldev->ld_site, fid));
359 info = osd_oti_get(env);
364 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT))
367 result = osd_oi_lookup(info, oi, fid, id);
369 inode = osd_iget(info, dev, id);
370 if (!IS_ERR(inode)) {
371 obj->oo_inode = inode;
372 LASSERT(obj->oo_inode->i_sb == osd_sb(dev));
373 if (dev->od_iop_mode) {
374 obj->oo_compat_dot_created = 1;
375 obj->oo_compat_dotdot_created = 1;
380 * If fid wasn't found in oi, inode-less object is
381 * created, for which lu_object_exists() returns
382 * false. This is used in a (frequent) case when
383 * objects are created as locking anchors or
384 * place holders for objects yet to be created.
386 result = PTR_ERR(inode);
387 } else if (result == -ENOENT)
389 LINVRNT(osd_invariant(obj));
395 * Concurrency: shouldn't matter.
397 static void osd_object_init0(struct osd_object *obj)
399 LASSERT(obj->oo_inode != NULL);
400 obj->oo_dt.do_body_ops = &osd_body_ops;
401 obj->oo_dt.do_lu.lo_header->loh_attr |=
402 (LOHA_EXISTS | (obj->oo_inode->i_mode & S_IFMT));
406 * Concurrency: no concurrent access is possible that early in object
409 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
410 const struct lu_object_conf *unused)
412 struct osd_object *obj = osd_obj(l);
415 LINVRNT(osd_invariant(obj));
417 result = osd_fid_lookup(env, obj, lu_object_fid(l));
419 if (obj->oo_inode != NULL)
420 osd_object_init0(obj);
422 LINVRNT(osd_invariant(obj));
427 * Concurrency: no concurrent access is possible that late in object
430 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
432 struct osd_object *obj = osd_obj(l);
434 LINVRNT(osd_invariant(obj));
436 dt_object_fini(&obj->oo_dt);
443 static struct iam_path_descr *osd_it_ipd_get(const struct lu_env *env,
444 const struct iam_container *bag)
446 return bag->ic_descr->id_ops->id_ipd_alloc(bag,
447 osd_oti_get(env)->oti_it_ipd);
450 static struct iam_path_descr *osd_idx_ipd_get(const struct lu_env *env,
451 const struct iam_container *bag)
453 return bag->ic_descr->id_ops->id_ipd_alloc(bag,
454 osd_oti_get(env)->oti_idx_ipd);
457 static void osd_ipd_put(const struct lu_env *env,
458 const struct iam_container *bag,
459 struct iam_path_descr *ipd)
461 bag->ic_descr->id_ops->id_ipd_free(ipd);
465 * Concurrency: no concurrent access is possible that late in object
468 static void osd_index_fini(struct osd_object *o)
470 struct iam_container *bag;
472 if (o->oo_dir != NULL) {
473 bag = &o->oo_dir->od_container;
474 if (o->oo_inode != NULL) {
475 if (bag->ic_object == o->oo_inode)
476 iam_container_fini(bag);
478 OBD_FREE_PTR(o->oo_dir);
484 * Concurrency: no concurrent access is possible that late in object
485 * life-cycle (for all existing callers, that is. New callers have to provide
486 * their own locking.)
488 static int osd_inode_unlinked(const struct inode *inode)
490 return inode->i_nlink == 0;
494 OSD_TXN_OI_DELETE_CREDITS = 20,
495 OSD_TXN_INODE_DELETE_CREDITS = 20
503 * Concurrency: doesn't access mutable data.
505 static int osd_param_is_sane(const struct osd_device *dev,
506 const struct txn_param *param)
508 return param->tp_credits <= osd_journal(dev)->j_max_transaction_buffers;
512 * Concurrency: shouldn't matter.
514 static void osd_trans_commit_cb(struct journal_callback *jcb, int error)
516 struct osd_thandle *oh = container_of0(jcb, struct osd_thandle, ot_jcb);
517 struct thandle *th = &oh->ot_super;
518 struct dt_device *dev = th->th_dev;
519 struct lu_device *lud = &dev->dd_lu_dev;
521 LASSERT(dev != NULL);
522 LASSERT(oh->ot_handle == NULL);
525 CERROR("transaction @0x%p commit error: %d\n", th, error);
527 struct lu_env *env = &osd_dt_dev(dev)->od_env_for_commit;
529 * This od_env_for_commit is only for commit usage. see
532 lu_context_enter(&env->le_ctx);
533 dt_txn_hook_commit(env, th);
534 lu_context_exit(&env->le_ctx);
537 lu_ref_del_at(&lud->ld_reference, oh->ot_dev_link, "osd-tx", th);
541 lu_context_exit(&th->th_ctx);
542 lu_context_fini(&th->th_ctx);
547 * Concurrency: shouldn't matter.
549 static struct thandle *osd_trans_start(const struct lu_env *env,
553 struct osd_device *dev = osd_dt_dev(d);
555 struct osd_thandle *oh;
561 hook_res = dt_txn_hook_start(env, d, p);
563 RETURN(ERR_PTR(hook_res));
565 if (osd_param_is_sane(dev, p)) {
566 OBD_ALLOC_GFP(oh, sizeof *oh, CFS_ALLOC_IO);
568 struct osd_thread_info *oti = osd_oti_get(env);
571 * XXX temporary stuff. Some abstraction layer should
575 jh = ldiskfs_journal_start_sb(osd_sb(dev), p->tp_credits);
581 jh->h_sync = p->tp_sync;
582 lu_device_get(&d->dd_lu_dev);
583 oh->ot_dev_link = lu_ref_add
584 (&d->dd_lu_dev.ld_reference,
586 /* add commit callback */
587 lu_context_init(&th->th_ctx, LCT_TX_HANDLE);
588 lu_context_enter(&th->th_ctx);
589 osd_journal_callback_set(jh, osd_trans_commit_cb,
590 (struct journal_callback *)&oh->ot_jcb);
591 LASSERT(oti->oti_txns == 0);
592 LASSERT(oti->oti_r_locks == 0);
593 LASSERT(oti->oti_w_locks == 0);
600 th = ERR_PTR(-ENOMEM);
602 CERROR("Invalid transaction parameters\n");
603 th = ERR_PTR(-EINVAL);
610 * Concurrency: shouldn't matter.
612 static void osd_trans_stop(const struct lu_env *env, struct thandle *th)
615 struct osd_thandle *oh;
616 struct osd_thread_info *oti = osd_oti_get(env);
620 oh = container_of0(th, struct osd_thandle, ot_super);
621 if (oh->ot_handle != NULL) {
622 handle_t *hdl = oh->ot_handle;
624 LASSERT(oti->oti_txns == 1);
626 LASSERT(oti->oti_r_locks == 0);
627 LASSERT(oti->oti_w_locks == 0);
628 result = dt_txn_hook_stop(env, th);
630 CERROR("Failure in transaction hook: %d\n", result);
631 oh->ot_handle = NULL;
632 result = ldiskfs_journal_stop(hdl);
634 CERROR("Failure to stop transaction: %d\n", result);
640 * Concurrency: no concurrent access is possible that late in object
643 static int osd_inode_remove(const struct lu_env *env, struct osd_object *obj)
645 const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
646 struct osd_device *osd = osd_obj2dev(obj);
647 struct osd_thread_info *oti = osd_oti_get(env);
648 struct txn_param *prm = &oti->oti_txn;
649 struct lu_env *env_del_obj = &oti->oti_obj_delete_tx_env;
653 lu_env_init(env_del_obj, LCT_DT_THREAD);
654 txn_param_init(prm, OSD_TXN_OI_DELETE_CREDITS +
655 OSD_TXN_INODE_DELETE_CREDITS);
656 th = osd_trans_start(env_del_obj, &osd->od_dt_dev, prm);
658 result = osd_oi_delete(osd_oti_get(env_del_obj),
659 &osd->od_oi, fid, th);
660 osd_trans_stop(env_del_obj, th);
662 result = PTR_ERR(th);
664 lu_env_fini(env_del_obj);
669 * Called just before object is freed. Releases all resources except for
670 * object itself (that is released by osd_object_free()).
672 * Concurrency: no concurrent access is possible that late in object
675 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
677 struct osd_object *obj = osd_obj(l);
678 struct inode *inode = obj->oo_inode;
680 LINVRNT(osd_invariant(obj));
683 * If object is unlinked remove fid->ino mapping from object index.
690 if (osd_inode_unlinked(inode)) {
691 result = osd_inode_remove(env, obj);
693 LU_OBJECT_DEBUG(D_ERROR, env, l,
694 "Failed to cleanup: %d\n",
699 obj->oo_inode = NULL;
704 * Concurrency: ->loo_object_release() is called under site spin-lock.
706 static void osd_object_release(const struct lu_env *env,
709 struct osd_object *o = osd_obj(l);
711 LASSERT(!lu_object_is_dying(l->lo_header));
712 if (o->oo_inode != NULL && osd_inode_unlinked(o->oo_inode))
713 set_bit(LU_OBJECT_HEARD_BANSHEE, &l->lo_header->loh_flags);
717 * Concurrency: shouldn't matter.
719 static int osd_object_print(const struct lu_env *env, void *cookie,
720 lu_printer_t p, const struct lu_object *l)
722 struct osd_object *o = osd_obj(l);
725 if (o->oo_dir != NULL)
726 d = o->oo_dir->od_container.ic_descr;
729 return (*p)(env, cookie, LUSTRE_OSD_NAME"-object@%p(i:%p:%lu/%u)[%s]",
731 o->oo_inode ? o->oo_inode->i_ino : 0UL,
732 o->oo_inode ? o->oo_inode->i_generation : 0,
733 d ? d->id_ops->id_name : "plain");
737 * Concurrency: shouldn't matter.
739 int osd_statfs(const struct lu_env *env, struct dt_device *d,
742 struct osd_device *osd = osd_dt_dev(d);
743 struct super_block *sb = osd_sb(osd);
746 spin_lock(&osd->od_osfs_lock);
748 if (cfs_time_before_64(osd->od_osfs_age, cfs_time_shift_64(-1))) {
749 result = ll_do_statfs(sb, &osd->od_kstatfs);
750 if (likely(result == 0)) /* N.B. statfs can't really fail */
751 osd->od_osfs_age = cfs_time_current_64();
754 if (likely(result == 0))
755 *sfs = osd->od_kstatfs;
756 spin_unlock(&osd->od_osfs_lock);
762 * Concurrency: doesn't access mutable data.
764 static void osd_conf_get(const struct lu_env *env,
765 const struct dt_device *dev,
766 struct dt_device_param *param)
769 * XXX should be taken from not-yet-existing fs abstraction layer.
771 param->ddp_max_name_len = LDISKFS_NAME_LEN;
772 param->ddp_max_nlink = LDISKFS_LINK_MAX;
773 param->ddp_block_shift = osd_sb(osd_dt_dev(dev))->s_blocksize_bits;
777 * Helper function to get and fill the buffer with input values.
779 static struct lu_buf *osd_buf_get(const struct lu_env *env, void *area, ssize_t len)
783 buf = &osd_oti_get(env)->oti_buf;
790 * Concurrency: shouldn't matter.
792 static int osd_sync(const struct lu_env *env, struct dt_device *d)
794 CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_NAME);
795 return ldiskfs_force_commit(osd_sb(osd_dt_dev(d)));
799 * Start commit for OSD device.
801 * An implementation of dt_commit_async method for OSD device.
802 * Asychronously starts underlayng fs sync and thereby a transaction
805 * \param env environment
808 * \see dt_device_operations
810 static int osd_commit_async(const struct lu_env *env,
813 struct super_block *s = osd_sb(osd_dt_dev(d));
816 CDEBUG(D_HA, "async commit OSD %s\n", LUSTRE_OSD_NAME);
817 RETURN(s->s_op->sync_fs(s, 0));
821 * Concurrency: shouldn't matter.
823 lvfs_sbdev_type fsfilt_ldiskfs_journal_sbdev(struct super_block *);
825 static void osd_ro(const struct lu_env *env, struct dt_device *d)
829 CERROR("*** setting device %s read-only ***\n", LUSTRE_OSD_NAME);
831 __lvfs_set_rdonly(lvfs_sbdev(osd_sb(osd_dt_dev(d))),
832 fsfilt_ldiskfs_journal_sbdev(osd_sb(osd_dt_dev(d))));
838 * Concurrency: serialization provided by callers.
840 static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d,
841 int mode, unsigned long timeout, __u32 alg,
842 struct lustre_capa_key *keys)
844 struct osd_device *dev = osd_dt_dev(d);
847 dev->od_fl_capa = mode;
848 dev->od_capa_timeout = timeout;
849 dev->od_capa_alg = alg;
850 dev->od_capa_keys = keys;
855 * Concurrency: serialization provided by callers.
857 static void osd_init_quota_ctxt(const struct lu_env *env, struct dt_device *d,
858 struct dt_quota_ctxt *ctxt, void *data)
860 struct obd_device *obd = (void *)ctxt;
861 struct vfsmount *mnt = (struct vfsmount *)data;
864 obd->u.obt.obt_sb = mnt->mnt_root->d_inode->i_sb;
865 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
866 obd->obd_lvfs_ctxt.pwdmnt = mnt;
867 obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
868 obd->obd_lvfs_ctxt.fs = get_ds();
874 * Note: we do not count into QUOTA here.
875 * If we mount with --data_journal we may need more.
877 static const int osd_dto_credits_noquota[DTO_NR] = {
880 * INDEX_EXTRA_TRANS_BLOCKS(8) +
881 * SINGLEDATA_TRANS_BLOCKS(8)
882 * XXX Note: maybe iam need more, since iam have more level than
885 [DTO_INDEX_INSERT] = 16,
886 [DTO_INDEX_DELETE] = 16,
890 [DTO_IDNEX_UPDATE] = 16,
892 * Create a object. The same as create object in EXT3.
893 * DATA_TRANS_BLOCKS(14) +
894 * INDEX_EXTRA_BLOCKS(8) +
895 * 3(inode bits, groups, GDT)
897 [DTO_OBJECT_CREATE] = 25,
901 [DTO_OBJECT_DELETE] = 25,
904 * 3(inode bits, group, GDT)
906 [DTO_ATTR_SET_BASE] = 3,
908 * Xattr set. The same as xattr of EXT3.
909 * DATA_TRANS_BLOCKS(14)
910 * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS
911 * are also counted in. Do not know why?
913 [DTO_XATTR_SET] = 14,
916 * creadits for inode change during write.
918 [DTO_WRITE_BASE] = 3,
920 * credits for single block write.
922 [DTO_WRITE_BLOCK] = 14,
924 * Attr set credits for chown.
925 * This is extra credits for setattr, and it is null without quota
927 [DTO_ATTR_SET_CHOWN]= 0
931 * Note: we count into QUOTA here.
932 * If we mount with --data_journal we may need more.
934 static const int osd_dto_credits_quota[DTO_NR] = {
936 * INDEX_EXTRA_TRANS_BLOCKS(8) +
937 * SINGLEDATA_TRANS_BLOCKS(8) +
938 * 2 * QUOTA_TRANS_BLOCKS(2)
940 [DTO_INDEX_INSERT] = 20,
942 * INDEX_EXTRA_TRANS_BLOCKS(8) +
943 * SINGLEDATA_TRANS_BLOCKS(8) +
944 * 2 * QUOTA_TRANS_BLOCKS(2)
946 [DTO_INDEX_DELETE] = 20,
950 [DTO_IDNEX_UPDATE] = 16,
952 * Create a object. Same as create object in EXT3 filesystem.
953 * DATA_TRANS_BLOCKS(16) +
954 * INDEX_EXTRA_BLOCKS(8) +
955 * 3(inode bits, groups, GDT) +
956 * 2 * QUOTA_INIT_BLOCKS(25)
958 [DTO_OBJECT_CREATE] = 77,
961 * DATA_TRANS_BLOCKS(16) +
962 * INDEX_EXTRA_BLOCKS(8) +
963 * 3(inode bits, groups, GDT) +
966 [DTO_OBJECT_DELETE] = 27,
969 * 3 (inode bit, group, GDT) +
971 [DTO_ATTR_SET_BASE] = 3,
973 * Xattr set. The same as xattr of EXT3.
974 * DATA_TRANS_BLOCKS(16)
975 * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS are
976 * also counted in. Do not know why?
978 [DTO_XATTR_SET] = 16,
981 * creadits for inode change during write.
983 [DTO_WRITE_BASE] = 3,
985 * credits for single block write.
987 [DTO_WRITE_BLOCK] = 16,
989 * Attr set credits for chown.
990 * It is added to already set setattr credits
991 * 2 * QUOTA_INIT_BLOCKS(25) +
992 * 2 * QUOTA_DEL_BLOCKS(9)
994 [DTO_ATTR_SET_CHOWN]= 68,
997 static int osd_credit_get(const struct lu_env *env, struct dt_device *d,
1000 LASSERT(ARRAY_SIZE(osd_dto_credits_noquota) ==
1001 ARRAY_SIZE(osd_dto_credits_quota));
1002 LASSERT(0 <= op && op < ARRAY_SIZE(osd_dto_credits_noquota));
1003 #ifdef HAVE_QUOTA_SUPPORT
1004 if (test_opt(osd_sb(osd_dt_dev(d)), QUOTA))
1005 return osd_dto_credits_quota[op];
1008 return osd_dto_credits_noquota[op];
1011 static const struct dt_device_operations osd_dt_ops = {
1012 .dt_root_get = osd_root_get,
1013 .dt_statfs = osd_statfs,
1014 .dt_trans_start = osd_trans_start,
1015 .dt_trans_stop = osd_trans_stop,
1016 .dt_conf_get = osd_conf_get,
1017 .dt_sync = osd_sync,
1019 .dt_commit_async = osd_commit_async,
1020 .dt_credit_get = osd_credit_get,
1021 .dt_init_capa_ctxt = osd_init_capa_ctxt,
1022 .dt_init_quota_ctxt= osd_init_quota_ctxt,
1025 static void osd_object_read_lock(const struct lu_env *env,
1026 struct dt_object *dt, unsigned role)
1028 struct osd_object *obj = osd_dt_obj(dt);
1029 struct osd_thread_info *oti = osd_oti_get(env);
1031 LINVRNT(osd_invariant(obj));
1033 LASSERT(obj->oo_owner != env);
1034 down_read_nested(&obj->oo_sem, role);
1036 LASSERT(obj->oo_owner == NULL);
1040 static void osd_object_write_lock(const struct lu_env *env,
1041 struct dt_object *dt, unsigned role)
1043 struct osd_object *obj = osd_dt_obj(dt);
1044 struct osd_thread_info *oti = osd_oti_get(env);
1046 LINVRNT(osd_invariant(obj));
1048 LASSERT(obj->oo_owner != env);
1049 down_write_nested(&obj->oo_sem, role);
1051 LASSERT(obj->oo_owner == NULL);
1052 obj->oo_owner = env;
1056 static void osd_object_read_unlock(const struct lu_env *env,
1057 struct dt_object *dt)
1059 struct osd_object *obj = osd_dt_obj(dt);
1060 struct osd_thread_info *oti = osd_oti_get(env);
1062 LINVRNT(osd_invariant(obj));
1064 LASSERT(oti->oti_r_locks > 0);
1066 up_read(&obj->oo_sem);
1069 static void osd_object_write_unlock(const struct lu_env *env,
1070 struct dt_object *dt)
1072 struct osd_object *obj = osd_dt_obj(dt);
1073 struct osd_thread_info *oti = osd_oti_get(env);
1075 LINVRNT(osd_invariant(obj));
1077 LASSERT(obj->oo_owner == env);
1078 LASSERT(oti->oti_w_locks > 0);
1080 obj->oo_owner = NULL;
1081 up_write(&obj->oo_sem);
1084 static int osd_object_write_locked(const struct lu_env *env,
1085 struct dt_object *dt)
1087 struct osd_object *obj = osd_dt_obj(dt);
1089 LINVRNT(osd_invariant(obj));
1091 return obj->oo_owner == env;
1094 static int capa_is_sane(const struct lu_env *env,
1095 struct osd_device *dev,
1096 struct lustre_capa *capa,
1097 struct lustre_capa_key *keys)
1099 struct osd_thread_info *oti = osd_oti_get(env);
1100 struct lustre_capa *tcapa = &oti->oti_capa;
1101 struct obd_capa *oc;
1105 oc = capa_lookup(dev->od_capa_hash, capa, 0);
1107 if (capa_is_expired(oc)) {
1108 DEBUG_CAPA(D_ERROR, capa, "expired");
1115 if (capa_is_expired_sec(capa)) {
1116 DEBUG_CAPA(D_ERROR, capa, "expired");
1120 spin_lock(&capa_lock);
1121 for (i = 0; i < 2; i++) {
1122 if (keys[i].lk_keyid == capa->lc_keyid) {
1123 oti->oti_capa_key = keys[i];
1127 spin_unlock(&capa_lock);
1130 DEBUG_CAPA(D_ERROR, capa, "no matched capa key");
1134 rc = capa_hmac(tcapa->lc_hmac, capa, oti->oti_capa_key.lk_key);
1138 if (memcmp(tcapa->lc_hmac, capa->lc_hmac, sizeof(capa->lc_hmac))) {
1139 DEBUG_CAPA(D_ERROR, capa, "HMAC mismatch");
1143 oc = capa_add(dev->od_capa_hash, capa);
1149 static int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
1150 struct lustre_capa *capa, __u64 opc)
1152 const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1153 struct osd_device *dev = osd_dev(dt->do_lu.lo_dev);
1154 struct md_capainfo *ci;
1157 if (!dev->od_fl_capa)
1160 if (capa == BYPASS_CAPA)
1163 ci = md_capainfo(env);
1167 if (ci->mc_auth == LC_ID_NONE)
1171 CERROR("no capability is provided for fid "DFID"\n", PFID(fid));
1175 if (!lu_fid_eq(fid, &capa->lc_fid)) {
1176 DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with",
1181 if (!capa_opc_supported(capa, opc)) {
1182 DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc);
1186 if ((rc = capa_is_sane(env, dev, capa, dev->od_capa_keys))) {
1187 DEBUG_CAPA(D_ERROR, capa, "insane (rc %d)", rc);
1194 static struct timespec *osd_inode_time(const struct lu_env *env,
1195 struct inode *inode, __u64 seconds)
1197 struct osd_thread_info *oti = osd_oti_get(env);
1198 struct timespec *t = &oti->oti_time;
1200 t->tv_sec = seconds;
1202 *t = timespec_trunc(*t, get_sb_time_gran(inode->i_sb));
1207 static void osd_inode_getattr(const struct lu_env *env,
1208 struct inode *inode, struct lu_attr *attr)
1210 attr->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE |
1211 LA_SIZE | LA_BLOCKS | LA_UID | LA_GID |
1212 LA_FLAGS | LA_NLINK | LA_RDEV | LA_BLKSIZE;
1214 attr->la_atime = LTIME_S(inode->i_atime);
1215 attr->la_mtime = LTIME_S(inode->i_mtime);
1216 attr->la_ctime = LTIME_S(inode->i_ctime);
1217 attr->la_mode = inode->i_mode;
1218 attr->la_size = i_size_read(inode);
1219 attr->la_blocks = inode->i_blocks;
1220 attr->la_uid = inode->i_uid;
1221 attr->la_gid = inode->i_gid;
1222 attr->la_flags = LDISKFS_I(inode)->i_flags;
1223 attr->la_nlink = inode->i_nlink;
1224 attr->la_rdev = inode->i_rdev;
1225 attr->la_blksize = ll_inode_blksize(inode);
1226 attr->la_blkbits = inode->i_blkbits;
1229 static int osd_attr_get(const struct lu_env *env,
1230 struct dt_object *dt,
1231 struct lu_attr *attr,
1232 struct lustre_capa *capa)
1234 struct osd_object *obj = osd_dt_obj(dt);
1236 LASSERT(dt_object_exists(dt));
1237 LINVRNT(osd_invariant(obj));
1239 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1242 spin_lock(&obj->oo_guard);
1243 osd_inode_getattr(env, obj->oo_inode, attr);
1244 spin_unlock(&obj->oo_guard);
1248 static int osd_inode_setattr(const struct lu_env *env,
1249 struct inode *inode, const struct lu_attr *attr)
1253 bits = attr->la_valid;
1255 LASSERT(!(bits & LA_TYPE)); /* Huh? You want too much. */
1257 #ifdef HAVE_QUOTA_SUPPORT
1258 if ((bits & LA_UID && attr->la_uid != inode->i_uid) ||
1259 (bits & LA_GID && attr->la_gid != inode->i_gid)) {
1260 struct osd_ctxt *save = &osd_oti_get(env)->oti_ctxt;
1266 iattr.ia_valid |= ATTR_UID;
1268 iattr.ia_valid |= ATTR_GID;
1269 iattr.ia_uid = attr->la_uid;
1270 iattr.ia_gid = attr->la_gid;
1271 osd_push_ctxt(env, save);
1272 rc = DQUOT_TRANSFER(inode, &iattr) ? -EDQUOT : 0;
1279 if (bits & LA_ATIME)
1280 inode->i_atime = *osd_inode_time(env, inode, attr->la_atime);
1281 if (bits & LA_CTIME)
1282 inode->i_ctime = *osd_inode_time(env, inode, attr->la_ctime);
1283 if (bits & LA_MTIME)
1284 inode->i_mtime = *osd_inode_time(env, inode, attr->la_mtime);
1285 if (bits & LA_SIZE) {
1286 LDISKFS_I(inode)->i_disksize = attr->la_size;
1287 i_size_write(inode, attr->la_size);
1290 /* OSD should not change "i_blocks" which is used by quota.
1291 * "i_blocks" should be changed by ldiskfs only.
1292 * Enable this assignment for SOM purpose now, until it is
1293 * stored in SOM EA. */
1294 if (bits & LA_BLOCKS)
1295 inode->i_blocks = attr->la_blocks;
1298 inode->i_mode = (inode->i_mode & S_IFMT) |
1299 (attr->la_mode & ~S_IFMT);
1301 inode->i_uid = attr->la_uid;
1303 inode->i_gid = attr->la_gid;
1304 if (bits & LA_NLINK)
1305 inode->i_nlink = attr->la_nlink;
1307 inode->i_rdev = attr->la_rdev;
1309 if (bits & LA_FLAGS) {
1310 struct ldiskfs_inode_info *li = LDISKFS_I(inode);
1312 li->i_flags = (li->i_flags & ~LDISKFS_FL_USER_MODIFIABLE) |
1313 (attr->la_flags & LDISKFS_FL_USER_MODIFIABLE);
1318 static int osd_attr_set(const struct lu_env *env,
1319 struct dt_object *dt,
1320 const struct lu_attr *attr,
1321 struct thandle *handle,
1322 struct lustre_capa *capa)
1324 struct osd_object *obj = osd_dt_obj(dt);
1327 LASSERT(handle != NULL);
1328 LASSERT(dt_object_exists(dt));
1329 LASSERT(osd_invariant(obj));
1331 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1334 spin_lock(&obj->oo_guard);
1335 rc = osd_inode_setattr(env, obj->oo_inode, attr);
1336 spin_unlock(&obj->oo_guard);
1339 mark_inode_dirty(obj->oo_inode);
1346 * XXX temporary solution.
1348 static int osd_create_pre(struct osd_thread_info *info, struct osd_object *obj,
1349 struct lu_attr *attr, struct thandle *th)
1354 static int osd_create_post(struct osd_thread_info *info, struct osd_object *obj,
1355 struct lu_attr *attr, struct thandle *th)
1357 osd_object_init0(obj);
1361 static struct dentry * osd_child_dentry_get(const struct lu_env *env,
1362 struct osd_object *obj,
1366 struct osd_thread_info *info = osd_oti_get(env);
1367 struct dentry *child_dentry = &info->oti_child_dentry;
1368 struct dentry *obj_dentry = &info->oti_obj_dentry;
1370 obj_dentry->d_inode = obj->oo_inode;
1371 obj_dentry->d_sb = osd_sb(osd_obj2dev(obj));
1372 obj_dentry->d_name.hash = 0;
1374 child_dentry->d_name.hash = 0;
1375 child_dentry->d_parent = obj_dentry;
1376 child_dentry->d_name.name = name;
1377 child_dentry->d_name.len = namelen;
1378 return child_dentry;
1382 static int osd_mkfile(struct osd_thread_info *info, struct osd_object *obj,
1384 struct dt_allocation_hint *hint,
1388 struct osd_device *osd = osd_obj2dev(obj);
1389 struct osd_thandle *oth;
1390 struct dt_object *parent;
1391 struct inode *inode;
1392 #ifdef HAVE_QUOTA_SUPPORT
1393 struct osd_ctxt *save = &info->oti_ctxt;
1396 LINVRNT(osd_invariant(obj));
1397 LASSERT(obj->oo_inode == NULL);
1399 oth = container_of(th, struct osd_thandle, ot_super);
1400 LASSERT(oth->ot_handle->h_transaction != NULL);
1402 if (hint && hint->dah_parent)
1403 parent = hint->dah_parent;
1405 parent = osd->od_obj_area;
1407 LASSERT(parent != NULL);
1408 LASSERT(osd_dt_obj(parent)->oo_inode->i_op != NULL);
1410 #ifdef HAVE_QUOTA_SUPPORT
1411 osd_push_ctxt(info->oti_env, save);
1413 inode = ldiskfs_create_inode(oth->ot_handle,
1414 osd_dt_obj(parent)->oo_inode, mode);
1415 #ifdef HAVE_QUOTA_SUPPORT
1418 if (!IS_ERR(inode)) {
1419 obj->oo_inode = inode;
1422 result = PTR_ERR(inode);
1423 LINVRNT(osd_invariant(obj));
1431 static int osd_mkdir(struct osd_thread_info *info, struct osd_object *obj,
1432 struct lu_attr *attr,
1433 struct dt_allocation_hint *hint,
1434 struct dt_object_format *dof,
1438 struct osd_thandle *oth;
1439 struct osd_device *osd = osd_obj2dev(obj);
1440 __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
1442 LASSERT(S_ISDIR(attr->la_mode));
1444 oth = container_of(th, struct osd_thandle, ot_super);
1445 LASSERT(oth->ot_handle->h_transaction != NULL);
1446 result = osd_mkfile(info, obj, mode, hint, th);
1447 if (result == 0 && osd->od_iop_mode == 0) {
1448 LASSERT(obj->oo_inode != NULL);
1450 * XXX uh-oh... call low-level iam function directly.
1453 result = iam_lvar_create(obj->oo_inode, OSD_NAME_LEN, 4,
1454 sizeof (struct osd_fid_pack),
1460 static int osd_mk_index(struct osd_thread_info *info, struct osd_object *obj,
1461 struct lu_attr *attr,
1462 struct dt_allocation_hint *hint,
1463 struct dt_object_format *dof,
1467 struct osd_thandle *oth;
1468 const struct dt_index_features *feat = dof->u.dof_idx.di_feat;
1470 __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
1472 LASSERT(S_ISREG(attr->la_mode));
1474 oth = container_of(th, struct osd_thandle, ot_super);
1475 LASSERT(oth->ot_handle->h_transaction != NULL);
1477 result = osd_mkfile(info, obj, mode, hint, th);
1479 LASSERT(obj->oo_inode != NULL);
1480 if (feat->dif_flags & DT_IND_VARKEY)
1481 result = iam_lvar_create(obj->oo_inode,
1482 feat->dif_keysize_max,
1484 feat->dif_recsize_max,
1487 result = iam_lfix_create(obj->oo_inode,
1488 feat->dif_keysize_max,
1490 feat->dif_recsize_max,
1497 static int osd_mkreg(struct osd_thread_info *info, struct osd_object *obj,
1498 struct lu_attr *attr,
1499 struct dt_allocation_hint *hint,
1500 struct dt_object_format *dof,
1503 LASSERT(S_ISREG(attr->la_mode));
1504 return osd_mkfile(info, obj, (attr->la_mode &
1505 (S_IFMT | S_IRWXUGO | S_ISVTX)), hint, th);
1508 static int osd_mksym(struct osd_thread_info *info, struct osd_object *obj,
1509 struct lu_attr *attr,
1510 struct dt_allocation_hint *hint,
1511 struct dt_object_format *dof,
1514 LASSERT(S_ISLNK(attr->la_mode));
1515 return osd_mkfile(info, obj, (attr->la_mode &
1516 (S_IFMT | S_IRWXUGO | S_ISVTX)), hint, th);
1519 static int osd_mknod(struct osd_thread_info *info, struct osd_object *obj,
1520 struct lu_attr *attr,
1521 struct dt_allocation_hint *hint,
1522 struct dt_object_format *dof,
1525 umode_t mode = attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX);
1528 LINVRNT(osd_invariant(obj));
1529 LASSERT(obj->oo_inode == NULL);
1530 LASSERT(S_ISCHR(mode) || S_ISBLK(mode) ||
1531 S_ISFIFO(mode) || S_ISSOCK(mode));
1533 result = osd_mkfile(info, obj, mode, hint, th);
1535 LASSERT(obj->oo_inode != NULL);
1536 init_special_inode(obj->oo_inode, mode, attr->la_rdev);
1538 LINVRNT(osd_invariant(obj));
1542 typedef int (*osd_obj_type_f)(struct osd_thread_info *, struct osd_object *,
1544 struct dt_allocation_hint *hint,
1545 struct dt_object_format *dof,
1548 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
1550 osd_obj_type_f result;
1566 result = osd_mk_index;
1577 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
1578 struct dt_object *parent, umode_t child_mode)
1582 memset(ah, 0, sizeof(*ah));
1583 ah->dah_parent = parent;
1584 ah->dah_mode = child_mode;
1588 * Helper function for osd_object_create()
1590 * \retval 0, on success
1592 static int __osd_object_create(struct osd_thread_info *info,
1593 struct osd_object *obj, struct lu_attr *attr,
1594 struct dt_allocation_hint *hint,
1595 struct dt_object_format *dof,
1601 result = osd_create_pre(info, obj, attr, th);
1603 result = osd_create_type_f(dof->dof_type)(info, obj,
1604 attr, hint, dof, th);
1606 result = osd_create_post(info, obj, attr, th);
1612 * Helper function for osd_object_create()
1614 * \retval 0, on success
1616 static int __osd_oi_insert(const struct lu_env *env, struct osd_object *obj,
1617 const struct lu_fid *fid, struct thandle *th)
1619 struct osd_thread_info *info = osd_oti_get(env);
1620 struct osd_inode_id *id = &info->oti_id;
1621 struct osd_device *osd = osd_obj2dev(obj);
1622 struct md_ucred *uc = md_ucred(env);
1624 LASSERT(obj->oo_inode != NULL);
1625 LASSERT(uc != NULL);
1627 id->oii_ino = obj->oo_inode->i_ino;
1628 id->oii_gen = obj->oo_inode->i_generation;
1630 return osd_oi_insert(info, &osd->od_oi, fid, id, th,
1631 uc->mu_cap & CFS_CAP_SYS_RESOURCE_MASK);
1634 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
1635 struct lu_attr *attr,
1636 struct dt_allocation_hint *hint,
1637 struct dt_object_format *dof,
1640 const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1641 struct osd_object *obj = osd_dt_obj(dt);
1642 struct osd_thread_info *info = osd_oti_get(env);
1647 LINVRNT(osd_invariant(obj));
1648 LASSERT(!dt_object_exists(dt));
1649 LASSERT(osd_write_locked(env, obj));
1650 LASSERT(th != NULL);
1652 result = __osd_object_create(info, obj, attr, hint, dof, th);
1654 result = __osd_oi_insert(env, obj, fid, th);
1656 LASSERT(ergo(result == 0, dt_object_exists(dt)));
1657 LASSERT(osd_invariant(obj));
1662 * Helper function for osd_xattr_set()
1664 static int __osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
1665 const struct lu_buf *buf, const char *name, int fl)
1667 struct osd_object *obj = osd_dt_obj(dt);
1668 struct inode *inode = obj->oo_inode;
1669 struct osd_thread_info *info = osd_oti_get(env);
1670 struct dentry *dentry = &info->oti_child_dentry;
1671 struct timespec *t = &info->oti_time;
1675 LASSERT(dt_object_exists(dt));
1676 LASSERT(inode->i_op != NULL && inode->i_op->setxattr != NULL);
1677 LASSERT(osd_write_locked(env, obj));
1679 if (fl & LU_XATTR_REPLACE)
1680 fs_flags |= XATTR_REPLACE;
1682 if (fl & LU_XATTR_CREATE)
1683 fs_flags |= XATTR_CREATE;
1685 dentry->d_inode = inode;
1686 *t = inode->i_ctime;
1687 rc = inode->i_op->setxattr(dentry, name, buf->lb_buf,
1688 buf->lb_len, fs_flags);
1689 /* ctime should not be updated with server-side time. */
1690 spin_lock(&obj->oo_guard);
1691 inode->i_ctime = *t;
1692 spin_unlock(&obj->oo_guard);
1693 mark_inode_dirty(inode);
1698 * Put the fid into lustre_mdt_attrs, and then place the structure
1699 * inode's ea. This fid should not be altered during the life time
1702 * \retval +ve, on success
1703 * \retval -ve, on error
1705 * FIXME: It is good to have/use ldiskfs_xattr_set_handle() here
1707 static int osd_ea_fid_set(const struct lu_env *env, struct dt_object *dt,
1708 const struct lu_fid *fid)
1710 struct osd_thread_info *info = osd_oti_get(env);
1711 struct lustre_mdt_attrs *mdt_attrs = &info->oti_mdt_attrs;
1713 lustre_lma_init(mdt_attrs, fid);
1714 lustre_lma_swab(mdt_attrs);
1715 return __osd_xattr_set(env, dt,
1716 osd_buf_get(env, mdt_attrs, sizeof *mdt_attrs),
1717 XATTR_NAME_LMA, LU_XATTR_CREATE);
1722 * Helper function to form igif
1724 static inline void osd_igif_get(const struct lu_env *env, struct inode *inode,
1727 lu_igif_build(fid, inode->i_ino, inode->i_generation);
1731 * Helper function to pack the fid
1733 void osd_fid_pack(struct osd_fid_pack *pack, const struct dt_rec *fid,
1734 struct lu_fid *befider)
1736 fid_cpu_to_be(befider, (struct lu_fid *)fid);
1737 memcpy(pack->fp_area, befider, sizeof(*befider));
1738 pack->fp_len = sizeof(*befider) + 1;
1741 int osd_fid_unpack(struct lu_fid *fid, const struct osd_fid_pack *pack)
1746 switch (pack->fp_len) {
1747 case sizeof *fid + 1:
1748 memcpy(fid, pack->fp_area, sizeof *fid);
1749 fid_be_to_cpu(fid, fid);
1752 CERROR("Unexpected packed fid size: %d\n", pack->fp_len);
1759 * Try to read the fid from inode ea into dt_rec, if return value
1760 * i.e. rc is +ve, then we got fid, otherwise we will have to form igif
1762 * \param fid object fid.
1764 * \retval 0 on success
1766 static int osd_ea_fid_get(const struct lu_env *env, struct osd_object *obj,
1767 __u32 ino, struct lu_fid *fid)
1769 struct osd_thread_info *info = osd_oti_get(env);
1770 struct lustre_mdt_attrs *mdt_attrs = &info->oti_mdt_attrs;
1771 struct lu_device *ldev = obj->oo_dt.do_lu.lo_dev;
1772 struct dentry *dentry = &info->oti_child_dentry;
1773 struct osd_inode_id *id = &info->oti_id;
1774 struct osd_device *dev;
1775 struct inode *inode;
1779 dev = osd_dev(ldev);
1782 id->oii_gen = OSD_OII_NOGEN;
1784 inode = osd_iget(info, dev, id);
1785 if (IS_ERR(inode)) {
1786 rc = PTR_ERR(inode);
1789 dentry->d_inode = inode;
1791 LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
1792 rc = inode->i_op->getxattr(dentry, XATTR_NAME_LMA, (void *)mdt_attrs,
1795 /* Check LMA compatibility */
1797 (mdt_attrs->lma_incompat & ~cpu_to_le32(LMA_INCOMPAT_SUPP))) {
1798 CWARN("Inode %lx: Unsupported incompat LMA feature(s) %#x\n",
1799 inode->i_ino, le32_to_cpu(mdt_attrs->lma_incompat) &
1800 ~LMA_INCOMPAT_SUPP);
1805 lustre_lma_swab(mdt_attrs);
1806 memcpy(fid, &mdt_attrs->lma_self_fid, sizeof(*mdt_attrs));
1808 } else if (rc == -ENODATA) {
1809 osd_igif_get(env, inode, fid);
1819 * OSD layer object create function for interoperability mode (b11826).
1820 * This is mostly similar to osd_object_create(). Only difference being, fid is
1821 * inserted into inode ea here.
1823 * \retval 0, on success
1824 * \retval -ve, on error
1826 static int osd_object_ea_create(const struct lu_env *env, struct dt_object *dt,
1827 struct lu_attr *attr,
1828 struct dt_allocation_hint *hint,
1829 struct dt_object_format *dof,
1832 const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1833 struct osd_object *obj = osd_dt_obj(dt);
1834 struct osd_thread_info *info = osd_oti_get(env);
1840 LASSERT(osd_invariant(obj));
1841 LASSERT(!dt_object_exists(dt));
1842 LASSERT(osd_write_locked(env, obj));
1843 LASSERT(th != NULL);
1845 result = __osd_object_create(info, obj, attr, hint, dof, th);
1847 if (hint && hint->dah_parent)
1848 is_root = osd_object_is_root(osd_dt_obj(hint->dah_parent));
1850 /* objects under osd root shld have igif fid, so dont add fid EA */
1851 if (result == 0 && is_root == 0)
1852 result = osd_ea_fid_set(env, dt, fid);
1855 result = __osd_oi_insert(env, obj, fid, th);
1857 LASSERT(ergo(result == 0, dt_object_exists(dt)));
1858 LINVRNT(osd_invariant(obj));
1863 * Concurrency: @dt is write locked.
1865 static void osd_object_ref_add(const struct lu_env *env,
1866 struct dt_object *dt,
1869 struct osd_object *obj = osd_dt_obj(dt);
1870 struct inode *inode = obj->oo_inode;
1872 LINVRNT(osd_invariant(obj));
1873 LASSERT(dt_object_exists(dt));
1874 LASSERT(osd_write_locked(env, obj));
1875 LASSERT(th != NULL);
1877 spin_lock(&obj->oo_guard);
1878 LASSERT(inode->i_nlink < LDISKFS_LINK_MAX);
1880 spin_unlock(&obj->oo_guard);
1881 mark_inode_dirty(inode);
1882 LINVRNT(osd_invariant(obj));
1886 * Concurrency: @dt is write locked.
1888 static void osd_object_ref_del(const struct lu_env *env,
1889 struct dt_object *dt,
1892 struct osd_object *obj = osd_dt_obj(dt);
1893 struct inode *inode = obj->oo_inode;
1895 LINVRNT(osd_invariant(obj));
1896 LASSERT(dt_object_exists(dt));
1897 LASSERT(osd_write_locked(env, obj));
1898 LASSERT(th != NULL);
1900 spin_lock(&obj->oo_guard);
1901 LASSERT(inode->i_nlink > 0);
1903 spin_unlock(&obj->oo_guard);
1904 mark_inode_dirty(inode);
1905 LINVRNT(osd_invariant(obj));
1909 * Concurrency: @dt is read locked.
1911 static int osd_xattr_get(const struct lu_env *env,
1912 struct dt_object *dt,
1915 struct lustre_capa *capa)
1917 struct osd_object *obj = osd_dt_obj(dt);
1918 struct inode *inode = obj->oo_inode;
1919 struct osd_thread_info *info = osd_oti_get(env);
1920 struct dentry *dentry = &info->oti_obj_dentry;
1922 LASSERT(dt_object_exists(dt));
1923 LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
1924 LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj));
1926 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1929 dentry->d_inode = inode;
1930 return inode->i_op->getxattr(dentry, name, buf->lb_buf, buf->lb_len);
1934 * Concurrency: @dt is write locked.
1936 static int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
1937 const struct lu_buf *buf, const char *name, int fl,
1938 struct thandle *handle, struct lustre_capa *capa)
1940 LASSERT(handle != NULL);
1942 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1945 return __osd_xattr_set(env, dt, buf, name, fl);
1949 * Concurrency: @dt is read locked.
1951 static int osd_xattr_list(const struct lu_env *env,
1952 struct dt_object *dt,
1954 struct lustre_capa *capa)
1956 struct osd_object *obj = osd_dt_obj(dt);
1957 struct inode *inode = obj->oo_inode;
1958 struct osd_thread_info *info = osd_oti_get(env);
1959 struct dentry *dentry = &info->oti_obj_dentry;
1961 LASSERT(dt_object_exists(dt));
1962 LASSERT(inode->i_op != NULL && inode->i_op->listxattr != NULL);
1963 LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj));
1965 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1968 dentry->d_inode = inode;
1969 return inode->i_op->listxattr(dentry, buf->lb_buf, buf->lb_len);
1973 * Concurrency: @dt is write locked.
1975 static int osd_xattr_del(const struct lu_env *env,
1976 struct dt_object *dt,
1978 struct thandle *handle,
1979 struct lustre_capa *capa)
1981 struct osd_object *obj = osd_dt_obj(dt);
1982 struct inode *inode = obj->oo_inode;
1983 struct osd_thread_info *info = osd_oti_get(env);
1984 struct dentry *dentry = &info->oti_obj_dentry;
1985 struct timespec *t = &info->oti_time;
1988 LASSERT(dt_object_exists(dt));
1989 LASSERT(inode->i_op != NULL && inode->i_op->removexattr != NULL);
1990 LASSERT(osd_write_locked(env, obj));
1991 LASSERT(handle != NULL);
1993 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1996 dentry->d_inode = inode;
1997 *t = inode->i_ctime;
1998 rc = inode->i_op->removexattr(dentry, name);
1999 /* ctime should not be updated with server-side time. */
2000 spin_lock(&obj->oo_guard);
2001 inode->i_ctime = *t;
2002 spin_unlock(&obj->oo_guard);
2003 mark_inode_dirty(inode);
2007 static struct obd_capa *osd_capa_get(const struct lu_env *env,
2008 struct dt_object *dt,
2009 struct lustre_capa *old,
2012 struct osd_thread_info *info = osd_oti_get(env);
2013 const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
2014 struct osd_object *obj = osd_dt_obj(dt);
2015 struct osd_device *dev = osd_obj2dev(obj);
2016 struct lustre_capa_key *key = &info->oti_capa_key;
2017 struct lustre_capa *capa = &info->oti_capa;
2018 struct obd_capa *oc;
2019 struct md_capainfo *ci;
2023 if (!dev->od_fl_capa)
2024 RETURN(ERR_PTR(-ENOENT));
2026 LASSERT(dt_object_exists(dt));
2027 LINVRNT(osd_invariant(obj));
2029 /* renewal sanity check */
2030 if (old && osd_object_auth(env, dt, old, opc))
2031 RETURN(ERR_PTR(-EACCES));
2033 ci = md_capainfo(env);
2035 RETURN(ERR_PTR(-ENOENT));
2037 switch (ci->mc_auth) {
2041 capa->lc_uid = obj->oo_inode->i_uid;
2042 capa->lc_gid = obj->oo_inode->i_gid;
2043 capa->lc_flags = LC_ID_PLAIN;
2045 case LC_ID_CONVERT: {
2048 s[0] = obj->oo_inode->i_uid;
2049 get_random_bytes(&(s[1]), sizeof(__u32));
2050 s[2] = obj->oo_inode->i_gid;
2051 get_random_bytes(&(s[3]), sizeof(__u32));
2052 rc = capa_encrypt_id(d, s, key->lk_key, CAPA_HMAC_KEY_MAX_LEN);
2054 RETURN(ERR_PTR(rc));
2056 capa->lc_uid = ((__u64)d[1] << 32) | d[0];
2057 capa->lc_gid = ((__u64)d[3] << 32) | d[2];
2058 capa->lc_flags = LC_ID_CONVERT;
2062 RETURN(ERR_PTR(-EINVAL));
2065 capa->lc_fid = *fid;
2067 capa->lc_flags |= dev->od_capa_alg << 24;
2068 capa->lc_timeout = dev->od_capa_timeout;
2069 capa->lc_expiry = 0;
2071 oc = capa_lookup(dev->od_capa_hash, capa, 1);
2073 LASSERT(!capa_is_expired(oc));
2077 spin_lock(&capa_lock);
2078 *key = dev->od_capa_keys[1];
2079 spin_unlock(&capa_lock);
2081 capa->lc_keyid = key->lk_keyid;
2082 capa->lc_expiry = cfs_time_current_sec() + dev->od_capa_timeout;
2084 rc = capa_hmac(capa->lc_hmac, capa, key->lk_key);
2086 DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc);
2087 RETURN(ERR_PTR(rc));
2090 oc = capa_add(dev->od_capa_hash, capa);
2094 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt)
2097 struct osd_object *obj = osd_dt_obj(dt);
2098 struct inode *inode = obj->oo_inode;
2099 struct osd_thread_info *info = osd_oti_get(env);
2100 struct dentry *dentry = &info->oti_obj_dentry;
2101 struct file *file = &info->oti_file;
2104 dentry->d_inode = inode;
2105 file->f_dentry = dentry;
2106 file->f_mapping = inode->i_mapping;
2107 file->f_op = inode->i_fop;
2108 LOCK_INODE_MUTEX(inode);
2109 rc = file->f_op->fsync(file, dentry, 0);
2110 UNLOCK_INODE_MUTEX(inode);
2115 * Get the 64-bit version for an inode.
2117 static dt_obj_version_t osd_object_version_get(const struct lu_env *env,
2118 struct dt_object *dt)
2120 struct inode *inode = osd_dt_obj(dt)->oo_inode;
2122 CDEBUG(D_INFO, "Get version "LPX64" for inode %lu\n",
2123 LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2124 return LDISKFS_I(inode)->i_fs_version;
2128 * Set the 64-bit version and return the old version.
2130 static void osd_object_version_set(const struct lu_env *env, struct dt_object *dt,
2131 dt_obj_version_t new_version)
2133 struct inode *inode = osd_dt_obj(dt)->oo_inode;
2135 CDEBUG(D_INFO, "Set version "LPX64" (old "LPX64") for inode %lu\n",
2136 new_version, LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2137 LDISKFS_I(inode)->i_fs_version = new_version;
2138 /** Version is set after all inode operations are finished,
2139 * so we should mark it dirty here */
2140 inode->i_sb->s_op->dirty_inode(inode);
2143 static int osd_data_get(const struct lu_env *env, struct dt_object *dt,
2146 struct osd_object *obj = osd_dt_obj(dt);
2149 *data = (void *)obj->oo_inode;
2157 static int osd_iam_index_probe(const struct lu_env *env, struct osd_object *o,
2158 const struct dt_index_features *feat)
2160 struct iam_descr *descr;
2162 if (osd_object_is_root(o))
2163 return feat == &dt_directory_features;
2165 LASSERT(o->oo_dir != NULL);
2167 descr = o->oo_dir->od_container.ic_descr;
2168 if (feat == &dt_directory_features) {
2169 if (descr->id_rec_size == sizeof(struct osd_fid_pack))
2175 feat->dif_keysize_min <= descr->id_key_size &&
2176 descr->id_key_size <= feat->dif_keysize_max &&
2177 feat->dif_recsize_min <= descr->id_rec_size &&
2178 descr->id_rec_size <= feat->dif_recsize_max &&
2179 !(feat->dif_flags & (DT_IND_VARKEY |
2180 DT_IND_VARREC | DT_IND_NONUNQ)) &&
2181 ergo(feat->dif_flags & DT_IND_UPDATE,
2182 1 /* XXX check that object (and file system) is
2187 static int osd_iam_container_init(const struct lu_env *env,
2188 struct osd_object *obj,
2189 struct osd_directory *dir)
2192 struct iam_container *bag;
2194 bag = &dir->od_container;
2195 result = iam_container_init(bag, &dir->od_descr, obj->oo_inode);
2197 result = iam_container_setup(bag);
2199 obj->oo_dt.do_index_ops = &osd_index_iam_ops;
2201 iam_container_fini(bag);
2208 * Concurrency: no external locking is necessary.
2210 static int osd_index_try(const struct lu_env *env, struct dt_object *dt,
2211 const struct dt_index_features *feat)
2215 struct osd_object *obj = osd_dt_obj(dt);
2216 struct osd_device *osd = osd_obj2dev(obj);
2218 LINVRNT(osd_invariant(obj));
2219 LASSERT(dt_object_exists(dt));
2221 if (osd_object_is_root(obj)) {
2222 dt->do_index_ops = &osd_index_ea_ops;
2224 } else if (feat == &dt_directory_features && osd->od_iop_mode) {
2225 dt->do_index_ops = &osd_index_ea_ops;
2226 if (S_ISDIR(obj->oo_inode->i_mode))
2231 } else if (!osd_has_index(obj)) {
2232 struct osd_directory *dir;
2237 spin_lock(&obj->oo_guard);
2238 if (obj->oo_dir == NULL)
2242 * Concurrent thread allocated container data.
2245 spin_unlock(&obj->oo_guard);
2247 * Now, that we have container data, serialize its
2250 down_write(&obj->oo_ext_idx_sem);
2252 * recheck under lock.
2254 if (!osd_has_index(obj))
2255 result = osd_iam_container_init(env, obj, dir);
2258 up_write(&obj->oo_ext_idx_sem);
2264 if (result == 0 && ea_dir == 0) {
2265 if (!osd_iam_index_probe(env, obj, feat))
2268 LINVRNT(osd_invariant(obj));
2273 static const struct dt_object_operations osd_obj_ops = {
2274 .do_read_lock = osd_object_read_lock,
2275 .do_write_lock = osd_object_write_lock,
2276 .do_read_unlock = osd_object_read_unlock,
2277 .do_write_unlock = osd_object_write_unlock,
2278 .do_write_locked = osd_object_write_locked,
2279 .do_attr_get = osd_attr_get,
2280 .do_attr_set = osd_attr_set,
2281 .do_ah_init = osd_ah_init,
2282 .do_create = osd_object_create,
2283 .do_index_try = osd_index_try,
2284 .do_ref_add = osd_object_ref_add,
2285 .do_ref_del = osd_object_ref_del,
2286 .do_xattr_get = osd_xattr_get,
2287 .do_xattr_set = osd_xattr_set,
2288 .do_xattr_del = osd_xattr_del,
2289 .do_xattr_list = osd_xattr_list,
2290 .do_capa_get = osd_capa_get,
2291 .do_object_sync = osd_object_sync,
2292 .do_version_get = osd_object_version_get,
2293 .do_version_set = osd_object_version_set,
2294 .do_data_get = osd_data_get,
2298 * dt_object_operations for interoperability mode
2299 * (i.e. to run 2.0 mds on 1.8 disk) (b11826)
2301 static const struct dt_object_operations osd_obj_ea_ops = {
2302 .do_read_lock = osd_object_read_lock,
2303 .do_write_lock = osd_object_write_lock,
2304 .do_read_unlock = osd_object_read_unlock,
2305 .do_write_unlock = osd_object_write_unlock,
2306 .do_write_locked = osd_object_write_locked,
2307 .do_attr_get = osd_attr_get,
2308 .do_attr_set = osd_attr_set,
2309 .do_ah_init = osd_ah_init,
2310 .do_create = osd_object_ea_create,
2311 .do_index_try = osd_index_try,
2312 .do_ref_add = osd_object_ref_add,
2313 .do_ref_del = osd_object_ref_del,
2314 .do_xattr_get = osd_xattr_get,
2315 .do_xattr_set = osd_xattr_set,
2316 .do_xattr_del = osd_xattr_del,
2317 .do_xattr_list = osd_xattr_list,
2318 .do_capa_get = osd_capa_get,
2319 .do_object_sync = osd_object_sync,
2320 .do_version_get = osd_object_version_get,
2321 .do_version_set = osd_object_version_set,
2322 .do_data_get = osd_data_get,
2330 * XXX: Another layering violation for now.
2332 * We don't want to use ->f_op->read methods, because generic file write
2334 * - serializes on ->i_sem, and
2336 * - does a lot of extra work like balance_dirty_pages(),
2338 * which doesn't work for globally shared files like /last-received.
2340 int fsfilt_ldiskfs_read(struct inode *inode, void *buf, int size, loff_t *offs);
2341 int fsfilt_ldiskfs_write_handle(struct inode *inode, void *buf, int bufsize,
2342 loff_t *offs, handle_t *handle);
2344 static ssize_t osd_read(const struct lu_env *env, struct dt_object *dt,
2345 struct lu_buf *buf, loff_t *pos,
2346 struct lustre_capa *capa)
2348 struct inode *inode = osd_dt_obj(dt)->oo_inode;
2350 if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ))
2353 return fsfilt_ldiskfs_read(inode, buf->lb_buf, buf->lb_len, pos);
2356 static ssize_t osd_write(const struct lu_env *env, struct dt_object *dt,
2357 const struct lu_buf *buf, loff_t *pos,
2358 struct thandle *handle, struct lustre_capa *capa,
2361 struct inode *inode = osd_dt_obj(dt)->oo_inode;
2362 struct osd_thandle *oh;
2364 #ifdef HAVE_QUOTA_SUPPORT
2365 cfs_cap_t save = current->cap_effective;
2368 LASSERT(handle != NULL);
2370 if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_WRITE))
2373 oh = container_of(handle, struct osd_thandle, ot_super);
2374 LASSERT(oh->ot_handle->h_transaction != NULL);
2375 #ifdef HAVE_QUOTA_SUPPORT
2377 current->cap_effective |= CFS_CAP_SYS_RESOURCE_MASK;
2379 current->cap_effective &= ~CFS_CAP_SYS_RESOURCE_MASK;
2381 result = fsfilt_ldiskfs_write_handle(inode, buf->lb_buf, buf->lb_len,
2382 pos, oh->ot_handle);
2383 #ifdef HAVE_QUOTA_SUPPORT
2384 current->cap_effective = save;
2387 result = buf->lb_len;
2391 static const struct dt_body_operations osd_body_ops = {
2392 .dbo_read = osd_read,
2393 .dbo_write = osd_write
2398 * delete a (key, value) pair from index \a dt specified by \a key
2400 * \param dt osd index object
2401 * \param key key for index
2402 * \param rec record reference
2403 * \param handle transaction handler
2406 * \retval -ve failure
2409 static int osd_index_iam_delete(const struct lu_env *env, struct dt_object *dt,
2410 const struct dt_key *key, struct thandle *handle,
2411 struct lustre_capa *capa)
2413 struct osd_object *obj = osd_dt_obj(dt);
2414 struct osd_thandle *oh;
2415 struct iam_path_descr *ipd;
2416 struct iam_container *bag = &obj->oo_dir->od_container;
2421 LINVRNT(osd_invariant(obj));
2422 LASSERT(dt_object_exists(dt));
2423 LASSERT(bag->ic_object == obj->oo_inode);
2424 LASSERT(handle != NULL);
2426 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
2429 ipd = osd_idx_ipd_get(env, bag);
2430 if (unlikely(ipd == NULL))
2433 oh = container_of0(handle, struct osd_thandle, ot_super);
2434 LASSERT(oh->ot_handle != NULL);
2435 LASSERT(oh->ot_handle->h_transaction != NULL);
2437 rc = iam_delete(oh->ot_handle, bag, (const struct iam_key *)key, ipd);
2438 osd_ipd_put(env, bag, ipd);
2439 LINVRNT(osd_invariant(obj));
2444 * Index delete function for interoperability mode (b11826).
2445 * It will remove the directory entry added by osd_index_ea_insert().
2446 * This entry is needed to maintain name->fid mapping.
2448 * \param key, key i.e. file entry to be deleted
2450 * \retval 0, on success
2451 * \retval -ve, on error
2453 static int osd_index_ea_delete(const struct lu_env *env, struct dt_object *dt,
2454 const struct dt_key *key, struct thandle *handle,
2455 struct lustre_capa *capa)
2457 struct osd_object *obj = osd_dt_obj(dt);
2458 struct inode *dir = obj->oo_inode;
2459 struct dentry *dentry;
2460 struct osd_thandle *oh;
2461 struct ldiskfs_dir_entry_2 *de;
2462 struct buffer_head *bh;
2468 LINVRNT(osd_invariant(obj));
2469 LASSERT(dt_object_exists(dt));
2470 LASSERT(handle != NULL);
2472 oh = container_of(handle, struct osd_thandle, ot_super);
2473 LASSERT(oh->ot_handle != NULL);
2474 LASSERT(oh->ot_handle->h_transaction != NULL);
2476 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
2479 dentry = osd_child_dentry_get(env, obj,
2480 (char *)key, strlen((char *)key));
2482 down_write(&obj->oo_ext_idx_sem);
2483 bh = ldiskfs_find_entry(dentry, &de);
2485 struct osd_thread_info *oti = osd_oti_get(env);
2486 struct timespec *ctime = &oti->oti_time;
2487 struct timespec *mtime = &oti->oti_time2;
2489 *ctime = dir->i_ctime;
2490 *mtime = dir->i_mtime;
2491 rc = ldiskfs_delete_entry(oh->ot_handle,
2493 /* xtime should not be updated with server-side time. */
2494 spin_lock(&obj->oo_guard);
2495 dir->i_ctime = *ctime;
2496 dir->i_mtime = *mtime;
2497 spin_unlock(&obj->oo_guard);
2498 mark_inode_dirty(dir);
2503 up_write(&obj->oo_ext_idx_sem);
2504 LASSERT(osd_invariant(obj));
2509 * Lookup index for \a key and copy record to \a rec.
2511 * \param dt osd index object
2512 * \param key key for index
2513 * \param rec record reference
2515 * \retval +ve success : exact mach
2516 * \retval 0 return record with key not greater than \a key
2517 * \retval -ve failure
2519 static int osd_index_iam_lookup(const struct lu_env *env, struct dt_object *dt,
2520 struct dt_rec *rec, const struct dt_key *key,
2521 struct lustre_capa *capa)
2523 struct osd_object *obj = osd_dt_obj(dt);
2524 struct iam_path_descr *ipd;
2525 struct iam_container *bag = &obj->oo_dir->od_container;
2526 struct osd_thread_info *oti = osd_oti_get(env);
2527 struct iam_iterator *it = &oti->oti_idx_it;
2528 struct iam_rec *iam_rec;
2532 LASSERT(osd_invariant(obj));
2533 LASSERT(dt_object_exists(dt));
2534 LASSERT(bag->ic_object == obj->oo_inode);
2536 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
2539 ipd = osd_idx_ipd_get(env, bag);
2543 /* got ipd now we can start iterator. */
2544 iam_it_init(it, bag, 0, ipd);
2546 rc = iam_it_get(it, (struct iam_key *)key);
2548 if (S_ISDIR(obj->oo_inode->i_mode))
2549 iam_rec = (struct iam_rec *)oti->oti_fid_packed;
2551 iam_rec = (struct iam_rec *) rec;
2553 iam_reccpy(&it->ii_path.ip_leaf, (struct iam_rec *)iam_rec);
2554 if (S_ISDIR(obj->oo_inode->i_mode))
2555 osd_fid_unpack((struct lu_fid *) rec,
2556 (struct osd_fid_pack *)iam_rec);
2560 osd_ipd_put(env, bag, ipd);
2562 LINVRNT(osd_invariant(obj));
2568 * Inserts (key, value) pair in \a dt index object.
2570 * \param dt osd index object
2571 * \param key key for index
2572 * \param rec record reference
2573 * \param th transaction handler
2576 * \retval -ve failure
2578 static int osd_index_iam_insert(const struct lu_env *env, struct dt_object *dt,
2579 const struct dt_rec *rec, const struct dt_key *key,
2580 struct thandle *th, struct lustre_capa *capa,
2583 struct osd_object *obj = osd_dt_obj(dt);
2584 struct iam_path_descr *ipd;
2585 struct osd_thandle *oh;
2586 struct iam_container *bag = &obj->oo_dir->od_container;
2587 #ifdef HAVE_QUOTA_SUPPORT
2588 cfs_cap_t save = current->cap_effective;
2590 struct osd_thread_info *oti = osd_oti_get(env);
2591 struct iam_rec *iam_rec = (struct iam_rec *)oti->oti_fid_packed;
2596 LINVRNT(osd_invariant(obj));
2597 LASSERT(dt_object_exists(dt));
2598 LASSERT(bag->ic_object == obj->oo_inode);
2599 LASSERT(th != NULL);
2601 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
2604 ipd = osd_idx_ipd_get(env, bag);
2605 if (unlikely(ipd == NULL))
2608 oh = container_of0(th, struct osd_thandle, ot_super);
2609 LASSERT(oh->ot_handle != NULL);
2610 LASSERT(oh->ot_handle->h_transaction != NULL);
2611 #ifdef HAVE_QUOTA_SUPPORT
2613 current->cap_effective |= CFS_CAP_SYS_RESOURCE_MASK;
2615 current->cap_effective &= ~CFS_CAP_SYS_RESOURCE_MASK;
2617 if (S_ISDIR(obj->oo_inode->i_mode))
2618 osd_fid_pack((struct osd_fid_pack *)iam_rec, rec, &oti->oti_fid);
2620 iam_rec = (struct iam_rec *) rec;
2621 rc = iam_insert(oh->ot_handle, bag, (const struct iam_key *)key,
2623 #ifdef HAVE_QUOTA_SUPPORT
2624 current->cap_effective = save;
2626 osd_ipd_put(env, bag, ipd);
2627 LINVRNT(osd_invariant(obj));
2632 * Calls ldiskfs_add_entry() to add directory entry
2633 * into the directory. This is required for
2634 * interoperability mode (b11826)
2636 * \retval 0, on success
2637 * \retval -ve, on error
2639 static int __osd_ea_add_rec(struct osd_thread_info *info,
2640 struct osd_object *pobj,
2641 struct osd_object *cobj,
2645 struct dentry *child;
2646 struct osd_thandle *oth;
2647 struct inode *cinode = cobj->oo_inode;
2650 oth = container_of(th, struct osd_thandle, ot_super);
2651 LASSERT(oth->ot_handle != NULL);
2652 LASSERT(oth->ot_handle->h_transaction != NULL);
2654 child = osd_child_dentry_get(info->oti_env, pobj, name, strlen(name));
2655 rc = ldiskfs_add_entry(oth->ot_handle, child, cinode);
2661 * Calls ldiskfs_add_dot_dotdot() to add dot and dotdot entries
2662 * into the directory.Also sets flags into osd object to
2663 * indicate dot and dotdot are created. This is required for
2664 * interoperability mode (b11826)
2666 * \param dir directory for dot and dotdot fixup.
2667 * \param obj child object for linking
2669 * \retval 0, on success
2670 * \retval -ve, on error
2672 static int osd_add_dot_dotdot(struct osd_thread_info *info,
2673 struct osd_object *dir,
2674 struct osd_object *obj, const char *name,
2677 struct inode *parent_dir = obj->oo_inode;
2678 struct inode *inode = dir->oo_inode;
2679 struct osd_thandle *oth;
2682 oth = container_of(th, struct osd_thandle, ot_super);
2683 LASSERT(oth->ot_handle->h_transaction != NULL);
2684 LASSERT(S_ISDIR(dir->oo_inode->i_mode));
2686 if (strcmp(name, dot) == 0) {
2687 if (dir->oo_compat_dot_created) {
2690 LASSERT(obj == dir);
2691 dir->oo_compat_dot_created = 1;
2694 } else if(strcmp(name, dotdot) == 0) {
2695 if (!dir->oo_compat_dot_created)
2697 if (dir->oo_compat_dotdot_created)
2698 return __osd_ea_add_rec(info, dir, obj, name, th);
2700 result = ldiskfs_add_dot_dotdot(oth->ot_handle, parent_dir, inode, NULL, NULL);
2702 dir->oo_compat_dotdot_created = 1;
2710 * It will call the appropriate osd_add* function and return the
2711 * value, return by respective functions.
2713 static int osd_ea_add_rec(const struct lu_env *env,
2714 struct osd_object *pobj,
2715 struct osd_object *cobj,
2719 struct osd_thread_info *info = osd_oti_get(env);
2722 if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' &&
2724 rc = osd_add_dot_dotdot(info, pobj, cobj, name, th);
2726 rc = __osd_ea_add_rec(info, pobj, cobj, name, th);
2732 * Calls ->lookup() to find dentry. From dentry get inode and
2733 * read inode's ea to get fid. This is required for interoperability
2736 * \retval 0, on success
2737 * \retval -ve, on error
2739 static int osd_ea_lookup_rec(const struct lu_env *env, struct osd_object *obj,
2740 struct dt_rec *rec, const struct dt_key *key)
2742 struct inode *dir = obj->oo_inode;
2743 struct dentry *dentry;
2744 struct ldiskfs_dir_entry_2 *de;
2745 struct buffer_head *bh;
2746 struct lu_fid *fid = (struct lu_fid *) rec;
2750 LASSERT(dir->i_op != NULL && dir->i_op->lookup != NULL);
2752 dentry = osd_child_dentry_get(env, obj,
2753 (char *)key, strlen((char *)key));
2755 down_read(&obj->oo_ext_idx_sem);
2756 bh = ldiskfs_find_entry(dentry, &de);
2758 ino = le32_to_cpu(de->inode);
2760 rc = osd_ea_fid_get(env, obj, ino, fid);
2764 up_read(&obj->oo_ext_idx_sem);
2769 * Find the osd object for given fid.
2771 * \param fid need to find the osd object having this fid
2773 * \retval osd_object on success
2774 * \retval -ve on error
2776 struct osd_object *osd_object_find(const struct lu_env *env,
2777 struct dt_object *dt,
2778 const struct lu_fid *fid)
2780 struct lu_device *ludev = dt->do_lu.lo_dev;
2781 struct osd_object *child = NULL;
2782 struct lu_object *luch;
2783 struct lu_object *lo;
2785 luch = lu_object_find(env, ludev, fid, NULL);
2786 if (!IS_ERR(luch)) {
2787 if (lu_object_exists(luch)) {
2788 lo = lu_object_locate(luch->lo_header, ludev->ld_type);
2790 child = osd_obj(lo);
2792 LU_OBJECT_DEBUG(D_ERROR, env, luch,
2793 "lu_object can't be located"
2794 ""DFID"\n", PFID(fid));
2796 if (child == NULL) {
2797 lu_object_put(env, luch);
2798 CERROR("Unable to get osd_object\n");
2799 child = ERR_PTR(-ENOENT);
2802 LU_OBJECT_DEBUG(D_ERROR, env, luch,
2803 "lu_object does not exists "DFID"\n",
2805 child = ERR_PTR(-ENOENT);
2808 child = (void *)luch;
2814 * Put the osd object once done with it.
2816 * \param obj osd object that needs to be put
2818 static inline void osd_object_put(const struct lu_env *env,
2819 struct osd_object *obj)
2821 lu_object_put(env, &obj->oo_dt.do_lu);
2825 * Index add function for interoperability mode (b11826).
2826 * It will add the directory entry.This entry is needed to
2827 * maintain name->fid mapping.
2829 * \param key it is key i.e. file entry to be inserted
2830 * \param rec it is value of given key i.e. fid
2832 * \retval 0, on success
2833 * \retval -ve, on error
2835 static int osd_index_ea_insert(const struct lu_env *env, struct dt_object *dt,
2836 const struct dt_rec *rec,
2837 const struct dt_key *key, struct thandle *th,
2838 struct lustre_capa *capa, int ignore_quota)
2840 struct osd_object *obj = osd_dt_obj(dt);
2841 struct lu_fid *fid = (struct lu_fid *) rec;
2842 const char *name = (const char *)key;
2843 struct osd_object *child;
2844 #ifdef HAVE_QUOTA_SUPPORT
2845 cfs_cap_t save = current->cap_effective;
2851 LASSERT(osd_invariant(obj));
2852 LASSERT(dt_object_exists(dt));
2853 LASSERT(th != NULL);
2855 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
2858 child = osd_object_find(env, dt, fid);
2859 if (!IS_ERR(child)) {
2860 struct inode *inode = obj->oo_inode;
2861 struct osd_thread_info *oti = osd_oti_get(env);
2862 struct timespec *ctime = &oti->oti_time;
2863 struct timespec *mtime = &oti->oti_time2;
2865 *ctime = inode->i_ctime;
2866 *mtime = inode->i_mtime;
2867 #ifdef HAVE_QUOTA_SUPPORT
2869 current->cap_effective |= CFS_CAP_SYS_RESOURCE_MASK;
2871 current->cap_effective &= ~CFS_CAP_SYS_RESOURCE_MASK;
2873 down_write(&obj->oo_ext_idx_sem);
2874 rc = osd_ea_add_rec(env, obj, child, name, th);
2875 up_write(&obj->oo_ext_idx_sem);
2876 #ifdef HAVE_QUOTA_SUPPORT
2877 current->cap_effective = save;
2879 osd_object_put(env, child);
2880 /* xtime should not be updated with server-side time. */
2881 spin_lock(&obj->oo_guard);
2882 inode->i_ctime = *ctime;
2883 inode->i_mtime = *mtime;
2884 spin_unlock(&obj->oo_guard);
2885 mark_inode_dirty(inode);
2887 rc = PTR_ERR(child);
2890 LASSERT(osd_invariant(obj));
2895 * Initialize osd Iterator for given osd index object.
2897 * \param dt osd index object
2900 static struct dt_it *osd_it_iam_init(const struct lu_env *env,
2901 struct dt_object *dt,
2902 struct lustre_capa *capa)
2904 struct osd_it_iam *it;
2905 struct osd_thread_info *oti = osd_oti_get(env);
2906 struct osd_object *obj = osd_dt_obj(dt);
2907 struct lu_object *lo = &dt->do_lu;
2908 struct iam_path_descr *ipd;
2909 struct iam_container *bag = &obj->oo_dir->od_container;
2911 LASSERT(lu_object_exists(lo));
2913 if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ))
2914 return ERR_PTR(-EACCES);
2917 ipd = osd_it_ipd_get(env, bag);
2918 if (likely(ipd != NULL)) {
2922 iam_it_init(&it->oi_it, bag, IAM_IT_MOVE, ipd);
2923 return (struct dt_it *)it;
2925 return ERR_PTR(-ENOMEM);
2929 * free given Iterator.
2932 static void osd_it_iam_fini(const struct lu_env *env, struct dt_it *di)
2934 struct osd_it_iam *it = (struct osd_it_iam *)di;
2935 struct osd_object *obj = it->oi_obj;
2937 iam_it_fini(&it->oi_it);
2938 osd_ipd_put(env, &obj->oo_dir->od_container, it->oi_ipd);
2939 lu_object_put(env, &obj->oo_dt.do_lu);
2943 * Move Iterator to record specified by \a key
2945 * \param di osd iterator
2946 * \param key key for index
2948 * \retval +ve di points to record with least key not larger than key
2949 * \retval 0 di points to exact matched key
2950 * \retval -ve failure
2953 static int osd_it_iam_get(const struct lu_env *env,
2954 struct dt_it *di, const struct dt_key *key)
2956 struct osd_it_iam *it = (struct osd_it_iam *)di;
2958 return iam_it_get(&it->oi_it, (const struct iam_key *)key);
2964 * \param di osd iterator
2967 static void osd_it_iam_put(const struct lu_env *env, struct dt_it *di)
2969 struct osd_it_iam *it = (struct osd_it_iam *)di;
2971 iam_it_put(&it->oi_it);
2975 * Move iterator by one record
2977 * \param di osd iterator
2979 * \retval +1 end of container reached
2981 * \retval -ve failure
2984 static int osd_it_iam_next(const struct lu_env *env, struct dt_it *di)
2986 struct osd_it_iam *it = (struct osd_it_iam *)di;
2988 return iam_it_next(&it->oi_it);
2992 * Return pointer to the key under iterator.
2995 static struct dt_key *osd_it_iam_key(const struct lu_env *env,
2996 const struct dt_it *di)
2998 struct osd_it_iam *it = (struct osd_it_iam *)di;
3000 return (struct dt_key *)iam_it_key_get(&it->oi_it);
3004 * Return size of key under iterator (in bytes)
3007 static int osd_it_iam_key_size(const struct lu_env *env, const struct dt_it *di)
3009 struct osd_it_iam *it = (struct osd_it_iam *)di;
3011 return iam_it_key_size(&it->oi_it);
3014 static inline void osd_it_append_attrs(struct lu_dirent*ent,
3019 struct luda_type *lt;
3020 const unsigned align = sizeof(struct luda_type) - 1;
3022 /* check if file type is required */
3023 if (attr & LUDA_TYPE) {
3024 len = (len + align) & ~align;
3026 lt = (void *) ent->lde_name + len;
3027 lt->lt_type = cpu_to_le16(CFS_DTTOIF(type));
3028 ent->lde_attrs |= LUDA_TYPE;
3031 ent->lde_attrs = cpu_to_le32(ent->lde_attrs);
3035 * build lu direct from backend fs dirent.
3038 static inline void osd_it_pack_dirent(struct lu_dirent *ent,
3046 fid_cpu_to_le(&ent->lde_fid, fid);
3047 ent->lde_attrs = LUDA_FID;
3049 ent->lde_hash = cpu_to_le64(offset);
3050 ent->lde_reclen = cpu_to_le16(lu_dirent_calc_size(namelen, attr));
3052 strncpy(ent->lde_name, name, namelen);
3053 ent->lde_namelen = cpu_to_le16(namelen);
3055 /* append lustre attributes */
3056 osd_it_append_attrs(ent, attr, namelen, type);
3060 * Return pointer to the record under iterator.
3062 static int osd_it_iam_rec(const struct lu_env *env,
3063 const struct dt_it *di,
3064 struct lu_dirent *lde,
3067 struct osd_it_iam *it = (struct osd_it_iam *)di;
3068 struct osd_thread_info *info = osd_oti_get(env);
3069 struct lu_fid *fid = &info->oti_fid;
3070 const struct osd_fid_pack *rec;
3076 name = (char *)iam_it_key_get(&it->oi_it);
3078 RETURN(PTR_ERR(name));
3080 namelen = iam_it_key_size(&it->oi_it);
3082 rec = (const struct osd_fid_pack *) iam_it_rec_get(&it->oi_it);
3084 RETURN(PTR_ERR(rec));
3086 rc = osd_fid_unpack(fid, rec);
3090 hash = iam_it_store(&it->oi_it);
3092 /* IAM does not store object type in IAM index (dir) */
3093 osd_it_pack_dirent(lde, fid, hash, name, namelen,
3100 * Returns cookie for current Iterator position.
3102 static __u64 osd_it_iam_store(const struct lu_env *env, const struct dt_it *di)
3104 struct osd_it_iam *it = (struct osd_it_iam *)di;
3106 return iam_it_store(&it->oi_it);
3110 * Restore iterator from cookie.
3112 * \param di osd iterator
3113 * \param hash Iterator location cookie
3115 * \retval +ve di points to record with least key not larger than key.
3116 * \retval 0 di points to exact matched key
3117 * \retval -ve failure
3120 static int osd_it_iam_load(const struct lu_env *env,
3121 const struct dt_it *di, __u64 hash)
3123 struct osd_it_iam *it = (struct osd_it_iam *)di;
3125 return iam_it_load(&it->oi_it, hash);
3128 static const struct dt_index_operations osd_index_iam_ops = {
3129 .dio_lookup = osd_index_iam_lookup,
3130 .dio_insert = osd_index_iam_insert,
3131 .dio_delete = osd_index_iam_delete,
3133 .init = osd_it_iam_init,
3134 .fini = osd_it_iam_fini,
3135 .get = osd_it_iam_get,
3136 .put = osd_it_iam_put,
3137 .next = osd_it_iam_next,
3138 .key = osd_it_iam_key,
3139 .key_size = osd_it_iam_key_size,
3140 .rec = osd_it_iam_rec,
3141 .store = osd_it_iam_store,
3142 .load = osd_it_iam_load
3147 * Creates or initializes iterator context.
3149 * \retval struct osd_it_ea, iterator structure on success
3152 static struct dt_it *osd_it_ea_init(const struct lu_env *env,
3153 struct dt_object *dt,
3154 struct lustre_capa *capa)
3156 struct osd_object *obj = osd_dt_obj(dt);
3157 struct osd_thread_info *info = osd_oti_get(env);
3158 struct osd_it_ea *it = &info->oti_it_ea;
3159 struct lu_object *lo = &dt->do_lu;
3160 struct dentry *obj_dentry = &info->oti_it_dentry;
3162 LASSERT(lu_object_exists(lo));
3164 obj_dentry->d_inode = obj->oo_inode;
3165 obj_dentry->d_sb = osd_sb(osd_obj2dev(obj));
3166 obj_dentry->d_name.hash = 0;
3168 it->oie_rd_dirent = 0;
3169 it->oie_it_dirent = 0;
3170 it->oie_dirent = NULL;
3171 it->oie_buf = info->oti_it_ea_buf;
3173 it->oie_file.f_pos = 0;
3174 it->oie_file.f_dentry = obj_dentry;
3175 it->oie_file.f_mapping = obj->oo_inode->i_mapping;
3176 it->oie_file.f_op = obj->oo_inode->i_fop;
3177 it->oie_file.private_data = NULL;
3179 RETURN((struct dt_it *) it);
3183 * Destroy or finishes iterator context.
3185 * \param di iterator structure to be destroyed
3187 static void osd_it_ea_fini(const struct lu_env *env, struct dt_it *di)
3189 struct osd_it_ea *it = (struct osd_it_ea *)di;
3190 struct osd_object *obj = it->oie_obj;
3191 struct inode *inode = obj->oo_inode;
3194 it->oie_file.f_op->release(inode, &it->oie_file);
3195 lu_object_put(env, &obj->oo_dt.do_lu);
3200 * It position the iterator at given key, so that next lookup continues from
3201 * that key Or it is similar to dio_it->load() but based on a key,
3202 * rather than file position.
3204 * As a special convention, osd_it_ea_get(env, di, "") has to rewind iterator
3207 * TODO: Presently return +1 considering it is only used by mdd_dir_is_empty().
3209 static int osd_it_ea_get(const struct lu_env *env,
3210 struct dt_it *di, const struct dt_key *key)
3212 struct osd_it_ea *it = (struct osd_it_ea *)di;
3215 LASSERT(((const char *)key)[0] == '\0');
3216 it->oie_file.f_pos = 0;
3217 it->oie_rd_dirent = 0;
3218 it->oie_it_dirent = 0;
3219 it->oie_dirent = NULL;
3227 static void osd_it_ea_put(const struct lu_env *env, struct dt_it *di)
3232 * It is called internally by ->readdir(). It fills the
3233 * iterator's in-memory data structure with required
3234 * information i.e. name, namelen, rec_size etc.
3236 * \param buf in which information to be filled in.
3237 * \param name name of the file in given dir
3239 * \retval 0 on success
3240 * \retval 1 on buffer full
3242 static int osd_ldiskfs_filldir(char *buf, const char *name, int namelen,
3243 loff_t offset, __u64 ino,
3246 struct osd_it_ea *it = (struct osd_it_ea *)buf;
3247 struct osd_it_ea_dirent *ent = it->oie_dirent;
3250 /* this should never happen */
3251 if (unlikely(namelen == 0 || namelen > LDISKFS_NAME_LEN)) {
3252 CERROR("ldiskfs return invalid namelen %d\n", namelen);
3256 if ((void *) ent - it->oie_buf + sizeof(*ent) + namelen >
3260 ent->oied_ino = ino;
3261 ent->oied_off = offset;
3262 ent->oied_namelen = namelen;
3263 ent->oied_type = d_type;
3265 memcpy(ent->oied_name, name, namelen);
3267 it->oie_rd_dirent++;
3268 it->oie_dirent = (void *) ent + size_round(sizeof(*ent) + namelen);
3273 * Calls ->readdir() to load a directory entry at a time
3274 * and stored it in iterator's in-memory data structure.
3276 * \param di iterator's in memory structure
3278 * \retval 0 on success
3279 * \retval -ve on error
3281 static int osd_ldiskfs_it_fill(const struct dt_it *di)
3283 struct osd_it_ea *it = (struct osd_it_ea *)di;
3284 struct osd_object *obj = it->oie_obj;
3285 struct inode *inode = obj->oo_inode;
3289 it->oie_dirent = it->oie_buf;
3290 it->oie_rd_dirent = 0;
3292 down_read(&obj->oo_ext_idx_sem);
3293 result = inode->i_fop->readdir(&it->oie_file, it,
3294 (filldir_t) osd_ldiskfs_filldir);
3296 up_read(&obj->oo_ext_idx_sem);
3298 if (it->oie_rd_dirent == 0) {
3301 it->oie_dirent = it->oie_buf;
3302 it->oie_it_dirent = 1;
3309 * It calls osd_ldiskfs_it_fill() which will use ->readdir()
3310 * to load a directory entry at a time and stored it in
3311 * iterator's in-memory data structure.
3313 * \param di iterator's in memory structure
3315 * \retval +ve iterator reached to end
3316 * \retval 0 iterator not reached to end
3317 * \retval -ve on error
3319 static int osd_it_ea_next(const struct lu_env *env, struct dt_it *di)
3321 struct osd_it_ea *it = (struct osd_it_ea *)di;
3326 if (it->oie_it_dirent < it->oie_rd_dirent) {
3327 it->oie_dirent = (void *) it->oie_dirent +
3328 size_round(sizeof(struct osd_it_ea_dirent) +
3329 it->oie_dirent->oied_namelen);
3330 it->oie_it_dirent++;
3333 if (it->oie_file.f_pos == LDISKFS_HTREE_EOF)
3336 rc = osd_ldiskfs_it_fill(di);
3343 * Returns the key at current position from iterator's in memory structure.
3345 * \param di iterator's in memory structure
3347 * \retval key i.e. struct dt_key on success
3349 static struct dt_key *osd_it_ea_key(const struct lu_env *env,
3350 const struct dt_it *di)
3352 struct osd_it_ea *it = (struct osd_it_ea *)di;
3354 RETURN((struct dt_key *)it->oie_dirent->oied_name);
3358 * Returns the key's size at current position from iterator's in memory structure.
3360 * \param di iterator's in memory structure
3362 * \retval key_size i.e. struct dt_key on success
3364 static int osd_it_ea_key_size(const struct lu_env *env, const struct dt_it *di)
3366 struct osd_it_ea *it = (struct osd_it_ea *)di;
3368 RETURN(it->oie_dirent->oied_namelen);
3373 * Returns the value (i.e. fid/igif) at current position from iterator's
3374 * in memory structure.
3376 * \param di struct osd_it_ea, iterator's in memory structure
3377 * \param attr attr requested for dirent.
3378 * \param lde lustre dirent
3380 * \retval 0 no error and \param lde has correct lustre dirent.
3381 * \retval -ve on error
3383 static inline int osd_it_ea_rec(const struct lu_env *env,
3384 const struct dt_it *di,
3385 struct lu_dirent *lde,
3388 struct osd_it_ea *it = (struct osd_it_ea *)di;
3389 struct osd_object *obj = it->oie_obj;
3390 struct osd_thread_info *info = osd_oti_get(env);
3391 struct lu_fid *fid = &info->oti_fid;
3396 rc = osd_ea_fid_get(env, obj, it->oie_dirent->oied_ino, fid);
3399 osd_it_pack_dirent(lde, fid, it->oie_dirent->oied_off,
3400 it->oie_dirent->oied_name,
3401 it->oie_dirent->oied_namelen,
3402 it->oie_dirent->oied_type,
3408 * Returns a cookie for current position of the iterator head, so that
3409 * user can use this cookie to load/start the iterator next time.
3411 * \param di iterator's in memory structure
3413 * \retval cookie for current position, on success
3415 static __u64 osd_it_ea_store(const struct lu_env *env, const struct dt_it *di)
3417 struct osd_it_ea *it = (struct osd_it_ea *)di;
3419 RETURN(it->oie_dirent->oied_off);
3423 * It calls osd_ldiskfs_it_fill() which will use ->readdir()
3424 * to load a directory entry at a time and stored it i inn,
3425 * in iterator's in-memory data structure.
3427 * \param di struct osd_it_ea, iterator's in memory structure
3429 * \retval +ve on success
3430 * \retval -ve on error
3432 static int osd_it_ea_load(const struct lu_env *env,
3433 const struct dt_it *di, __u64 hash)
3435 struct osd_it_ea *it = (struct osd_it_ea *)di;
3439 it->oie_file.f_pos = hash;
3441 rc = osd_ldiskfs_it_fill(di);
3449 * Index lookup function for interoperability mode (b11826).
3451 * \param key, key i.e. file name to be searched
3453 * \retval +ve, on success
3454 * \retval -ve, on error
3456 static int osd_index_ea_lookup(const struct lu_env *env, struct dt_object *dt,
3457 struct dt_rec *rec, const struct dt_key *key,
3458 struct lustre_capa *capa)
3460 struct osd_object *obj = osd_dt_obj(dt);
3465 LASSERT(S_ISDIR(obj->oo_inode->i_mode));
3466 LINVRNT(osd_invariant(obj));
3468 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
3471 rc = osd_ea_lookup_rec(env, obj, rec, key);
3479 * Index and Iterator operations for interoperability
3480 * mode (i.e. to run 2.0 mds on 1.8 disk) (b11826)
3482 static const struct dt_index_operations osd_index_ea_ops = {
3483 .dio_lookup = osd_index_ea_lookup,
3484 .dio_insert = osd_index_ea_insert,
3485 .dio_delete = osd_index_ea_delete,
3487 .init = osd_it_ea_init,
3488 .fini = osd_it_ea_fini,
3489 .get = osd_it_ea_get,
3490 .put = osd_it_ea_put,
3491 .next = osd_it_ea_next,
3492 .key = osd_it_ea_key,
3493 .key_size = osd_it_ea_key_size,
3494 .rec = osd_it_ea_rec,
3495 .store = osd_it_ea_store,
3496 .load = osd_it_ea_load
3500 static void *osd_key_init(const struct lu_context *ctx,
3501 struct lu_context_key *key)
3503 struct osd_thread_info *info;
3505 OBD_ALLOC_PTR(info);
3507 OBD_ALLOC(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
3508 if (info->oti_it_ea_buf != NULL) {
3509 info->oti_env = container_of(ctx, struct lu_env,
3513 info = ERR_PTR(-ENOMEM);
3516 info = ERR_PTR(-ENOMEM);
3521 static void osd_key_fini(const struct lu_context *ctx,
3522 struct lu_context_key *key, void* data)
3524 struct osd_thread_info *info = data;
3526 OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
3530 static void osd_key_exit(const struct lu_context *ctx,
3531 struct lu_context_key *key, void *data)
3533 struct osd_thread_info *info = data;
3535 LASSERT(info->oti_r_locks == 0);
3536 LASSERT(info->oti_w_locks == 0);
3537 LASSERT(info->oti_txns == 0);
3540 /* type constructor/destructor: osd_type_init, osd_type_fini */
3541 LU_TYPE_INIT_FINI(osd, &osd_key);
3543 static struct lu_context_key osd_key = {
3544 .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD,
3545 .lct_init = osd_key_init,
3546 .lct_fini = osd_key_fini,
3547 .lct_exit = osd_key_exit
3551 static int osd_device_init(const struct lu_env *env, struct lu_device *d,
3552 const char *name, struct lu_device *next)
3555 struct lu_context *ctx;
3557 /* context for commit hooks */
3558 ctx = &osd_dev(d)->od_env_for_commit.le_ctx;
3559 rc = lu_context_init(ctx, LCT_MD_THREAD|LCT_REMEMBER|LCT_NOREF);
3561 rc = osd_procfs_init(osd_dev(d), name);
3562 ctx->lc_cookie = 0x3;
3567 static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
3569 struct osd_thread_info *info = osd_oti_get(env);
3571 if (o->od_obj_area != NULL) {
3572 lu_object_put(env, &o->od_obj_area->do_lu);
3573 o->od_obj_area = NULL;
3575 osd_oi_fini(info, &o->od_oi);
3580 static int osd_mount(const struct lu_env *env,
3581 struct osd_device *o, struct lustre_cfg *cfg)
3583 struct lustre_mount_info *lmi;
3584 const char *dev = lustre_cfg_string(cfg, 0);
3585 struct lustre_disk_data *ldd;
3586 struct lustre_sb_info *lsi;
3589 if (o->od_mount != NULL) {
3590 CERROR("Already mounted (%s)\n", dev);
3595 lmi = server_get_mount(dev);
3597 CERROR("Cannot get mount info for %s!\n", dev);
3601 LASSERT(lmi != NULL);
3602 /* save lustre_mount_info in dt_device */
3605 lsi = s2lsi(lmi->lmi_sb);
3608 if (ldd->ldd_flags & LDD_F_IAM_DIR) {
3610 LCONSOLE_WARN("OSD: IAM mode enabled\n");
3614 o->od_obj_area = NULL;
3618 static struct lu_device *osd_device_fini(const struct lu_env *env,
3619 struct lu_device *d)
3624 shrink_dcache_sb(osd_sb(osd_dev(d)));
3625 osd_sync(env, lu2dt_dev(d));
3627 rc = osd_procfs_fini(osd_dev(d));
3629 CERROR("proc fini error %d \n", rc);
3630 RETURN (ERR_PTR(rc));
3633 if (osd_dev(d)->od_mount)
3634 server_put_mount(osd_dev(d)->od_mount->lmi_name,
3635 osd_dev(d)->od_mount->lmi_mnt);
3636 osd_dev(d)->od_mount = NULL;
3638 lu_context_fini(&osd_dev(d)->od_env_for_commit.le_ctx);
3642 static struct lu_device *osd_device_alloc(const struct lu_env *env,
3643 struct lu_device_type *t,
3644 struct lustre_cfg *cfg)
3646 struct lu_device *l;
3647 struct osd_device *o;
3653 result = dt_device_init(&o->od_dt_dev, t);
3656 l->ld_ops = &osd_lu_ops;
3657 o->od_dt_dev.dd_ops = &osd_dt_ops;
3658 spin_lock_init(&o->od_osfs_lock);
3659 o->od_osfs_age = cfs_time_shift_64(-1000);
3660 o->od_capa_hash = init_capa_hash();
3661 if (o->od_capa_hash == NULL) {
3662 dt_device_fini(&o->od_dt_dev);
3663 l = ERR_PTR(-ENOMEM);
3666 l = ERR_PTR(result);
3671 l = ERR_PTR(-ENOMEM);
3675 static struct lu_device *osd_device_free(const struct lu_env *env,
3676 struct lu_device *d)
3678 struct osd_device *o = osd_dev(d);
3681 cleanup_capa_hash(o->od_capa_hash);
3682 dt_device_fini(&o->od_dt_dev);
3687 static int osd_process_config(const struct lu_env *env,
3688 struct lu_device *d, struct lustre_cfg *cfg)
3690 struct osd_device *o = osd_dev(d);
3694 switch(cfg->lcfg_command) {
3696 err = osd_mount(env, o, cfg);
3699 err = osd_shutdown(env, o);
3708 static int osd_recovery_complete(const struct lu_env *env,
3709 struct lu_device *d)
3714 static int osd_prepare(const struct lu_env *env,
3715 struct lu_device *pdev,
3716 struct lu_device *dev)
3718 struct osd_device *osd = osd_dev(dev);
3719 struct lustre_sb_info *lsi;
3720 struct lustre_disk_data *ldd;
3721 struct lustre_mount_info *lmi;
3722 struct osd_thread_info *oti = osd_oti_get(env);
3723 struct dt_object *d;
3727 /* 1. initialize oi before any file create or file open */
3728 result = osd_oi_init(oti, &osd->od_oi,
3729 &osd->od_dt_dev, lu2md_dev(pdev));
3733 lmi = osd->od_mount;
3734 lsi = s2lsi(lmi->lmi_sb);
3737 /* 2. setup local objects */
3738 result = llo_local_objects_setup(env, lu2md_dev(pdev), lu2dt_dev(dev));
3742 /* 3. open remote object dir */
3743 d = dt_store_open(env, lu2dt_dev(dev), "",
3744 remote_obj_dir, &oti->oti_fid);
3746 osd->od_obj_area = d;
3749 result = PTR_ERR(d);
3750 osd->od_obj_area = NULL;
3757 static const struct lu_object_operations osd_lu_obj_ops = {
3758 .loo_object_init = osd_object_init,
3759 .loo_object_delete = osd_object_delete,
3760 .loo_object_release = osd_object_release,
3761 .loo_object_free = osd_object_free,
3762 .loo_object_print = osd_object_print,
3763 .loo_object_invariant = osd_object_invariant
3766 static const struct lu_device_operations osd_lu_ops = {
3767 .ldo_object_alloc = osd_object_alloc,
3768 .ldo_process_config = osd_process_config,
3769 .ldo_recovery_complete = osd_recovery_complete,
3770 .ldo_prepare = osd_prepare,
3773 static const struct lu_device_type_operations osd_device_type_ops = {
3774 .ldto_init = osd_type_init,
3775 .ldto_fini = osd_type_fini,
3777 .ldto_start = osd_type_start,
3778 .ldto_stop = osd_type_stop,
3780 .ldto_device_alloc = osd_device_alloc,
3781 .ldto_device_free = osd_device_free,
3783 .ldto_device_init = osd_device_init,
3784 .ldto_device_fini = osd_device_fini
3787 static struct lu_device_type osd_device_type = {
3788 .ldt_tags = LU_DEVICE_DT,
3789 .ldt_name = LUSTRE_OSD_NAME,
3790 .ldt_ops = &osd_device_type_ops,
3791 .ldt_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3795 * lprocfs legacy support.
3797 static struct obd_ops osd_obd_device_ops = {
3798 .o_owner = THIS_MODULE
3801 static struct lu_local_obj_desc llod_osd_rem_obj_dir = {
3802 .llod_name = remote_obj_dir,
3803 .llod_oid = OSD_REM_OBJ_DIR_OID,
3805 .llod_feat = &dt_directory_features,
3808 static int __init osd_mod_init(void)
3810 struct lprocfs_static_vars lvars;
3813 llo_local_obj_register(&llod_osd_rem_obj_dir);
3814 lprocfs_osd_init_vars(&lvars);
3815 return class_register_type(&osd_obd_device_ops, NULL, lvars.module_vars,
3816 LUSTRE_OSD_NAME, &osd_device_type);
3819 static void __exit osd_mod_exit(void)
3821 llo_local_obj_unregister(&llod_osd_rem_obj_dir);
3822 class_unregister_type(LUSTRE_OSD_NAME);
3825 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3826 MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_NAME")");
3827 MODULE_LICENSE("GPL");
3829 cfs_module(osd, "0.0.2", osd_mod_init, osd_mod_exit);