4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
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
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/dt_object.c
39 * Generic functions from dt_object.h
41 * Author: Nikita Danilov <nikita@clusterfs.com>
44 #define DEBUG_SUBSYSTEM S_CLASS
47 #include <dt_object.h>
48 #include <libcfs/list.h>
50 #include <lustre_fid.h>
52 #include <lustre_quota.h>
54 /* context key constructor/destructor: dt_global_key_init, dt_global_key_fini */
55 LU_KEY_INIT(dt_global, struct dt_thread_info);
56 LU_KEY_FINI(dt_global, struct dt_thread_info);
58 struct lu_context_key dt_key = {
59 .lct_tags = LCT_MD_THREAD | LCT_DT_THREAD | LCT_MG_THREAD | LCT_LOCAL,
60 .lct_init = dt_global_key_init,
61 .lct_fini = dt_global_key_fini
63 EXPORT_SYMBOL(dt_key);
65 /* no lock is necessary to protect the list, because call-backs
66 * are added during system startup. Please refer to "struct dt_device".
68 void dt_txn_callback_add(struct dt_device *dev, struct dt_txn_callback *cb)
70 cfs_list_add(&cb->dtc_linkage, &dev->dd_txn_callbacks);
72 EXPORT_SYMBOL(dt_txn_callback_add);
74 void dt_txn_callback_del(struct dt_device *dev, struct dt_txn_callback *cb)
76 cfs_list_del_init(&cb->dtc_linkage);
78 EXPORT_SYMBOL(dt_txn_callback_del);
80 int dt_txn_hook_start(const struct lu_env *env,
81 struct dt_device *dev, struct thandle *th)
84 struct dt_txn_callback *cb;
89 cfs_list_for_each_entry(cb, &dev->dd_txn_callbacks, dtc_linkage) {
90 if (cb->dtc_txn_start == NULL ||
91 !(cb->dtc_tag & env->le_ctx.lc_tags))
93 rc = cb->dtc_txn_start(env, th, cb->dtc_cookie);
99 EXPORT_SYMBOL(dt_txn_hook_start);
101 int dt_txn_hook_stop(const struct lu_env *env, struct thandle *txn)
103 struct dt_device *dev = txn->th_dev;
104 struct dt_txn_callback *cb;
110 cfs_list_for_each_entry(cb, &dev->dd_txn_callbacks, dtc_linkage) {
111 if (cb->dtc_txn_stop == NULL ||
112 !(cb->dtc_tag & env->le_ctx.lc_tags))
114 rc = cb->dtc_txn_stop(env, txn, cb->dtc_cookie);
120 EXPORT_SYMBOL(dt_txn_hook_stop);
122 void dt_txn_hook_commit(struct thandle *txn)
124 struct dt_txn_callback *cb;
129 cfs_list_for_each_entry(cb, &txn->th_dev->dd_txn_callbacks,
131 if (cb->dtc_txn_commit)
132 cb->dtc_txn_commit(txn, cb->dtc_cookie);
135 EXPORT_SYMBOL(dt_txn_hook_commit);
137 int dt_device_init(struct dt_device *dev, struct lu_device_type *t)
140 CFS_INIT_LIST_HEAD(&dev->dd_txn_callbacks);
141 return lu_device_init(&dev->dd_lu_dev, t);
143 EXPORT_SYMBOL(dt_device_init);
145 void dt_device_fini(struct dt_device *dev)
147 lu_device_fini(&dev->dd_lu_dev);
149 EXPORT_SYMBOL(dt_device_fini);
151 int dt_object_init(struct dt_object *obj,
152 struct lu_object_header *h, struct lu_device *d)
155 return lu_object_init(&obj->do_lu, h, d);
157 EXPORT_SYMBOL(dt_object_init);
159 void dt_object_fini(struct dt_object *obj)
161 lu_object_fini(&obj->do_lu);
163 EXPORT_SYMBOL(dt_object_fini);
165 int dt_try_as_dir(const struct lu_env *env, struct dt_object *obj)
167 if (obj->do_index_ops == NULL)
168 obj->do_ops->do_index_try(env, obj, &dt_directory_features);
169 return obj->do_index_ops != NULL;
171 EXPORT_SYMBOL(dt_try_as_dir);
173 enum dt_format_type dt_mode_to_dft(__u32 mode)
175 enum dt_format_type result;
177 switch (mode & S_IFMT) {
182 result = DFT_REGULAR;
199 EXPORT_SYMBOL(dt_mode_to_dft);
202 * lookup fid for object named \a name in directory \a dir.
205 int dt_lookup_dir(const struct lu_env *env, struct dt_object *dir,
206 const char *name, struct lu_fid *fid)
208 if (dt_try_as_dir(env, dir))
209 return dt_lookup(env, dir, (struct dt_rec *)fid,
210 (const struct dt_key *)name, BYPASS_CAPA);
213 EXPORT_SYMBOL(dt_lookup_dir);
215 /* this differs from dt_locate by top_dev as parameter
216 * but not one from lu_site */
217 struct dt_object *dt_locate_at(const struct lu_env *env,
218 struct dt_device *dev,
219 const struct lu_fid *fid,
220 struct lu_device *top_dev,
221 const struct lu_object_conf *conf)
223 struct lu_object *lo;
226 lo = lu_object_find_at(env, top_dev, fid, conf);
228 return ERR_PTR(PTR_ERR(lo));
232 list_for_each_entry(n, &lo->lo_header->loh_layers, lo_linkage) {
233 if (n->lo_dev == &dev->dd_lu_dev)
234 return container_of0(n, struct dt_object, do_lu);
237 return ERR_PTR(-ENOENT);
239 EXPORT_SYMBOL(dt_locate_at);
242 * find a object named \a entry in given \a dfh->dfh_o directory.
244 static int dt_find_entry(const struct lu_env *env, const char *entry, void *data)
246 struct dt_find_hint *dfh = data;
247 struct dt_device *dt = dfh->dfh_dt;
248 struct lu_fid *fid = dfh->dfh_fid;
249 struct dt_object *obj = dfh->dfh_o;
252 result = dt_lookup_dir(env, obj, entry, fid);
253 lu_object_put(env, &obj->do_lu);
255 obj = dt_locate(env, dt, fid);
257 result = PTR_ERR(obj);
264 * Abstract function which parses path name. This function feeds
265 * path component to \a entry_func.
267 int dt_path_parser(const struct lu_env *env,
268 char *path, dt_entry_func_t entry_func,
275 e = strsep(&path, "/");
280 if (!path || path[0] == '\0')
284 rc = entry_func(env, e, data);
293 dt_store_resolve(const struct lu_env *env, struct dt_device *dt,
294 const char *path, struct lu_fid *fid)
296 struct dt_thread_info *info = dt_info(env);
297 struct dt_find_hint *dfh = &info->dti_dfh;
298 struct dt_object *obj;
305 strlcpy(info->dti_buf, path, sizeof(info->dti_buf));
307 result = dt->dd_ops->dt_root_get(env, dt, fid);
309 obj = dt_locate(env, dt, fid);
312 result = dt_path_parser(env, info->dti_buf,
315 obj = ERR_PTR(result);
320 obj = ERR_PTR(result);
324 EXPORT_SYMBOL(dt_store_resolve);
326 static struct dt_object *dt_reg_open(const struct lu_env *env,
327 struct dt_device *dt,
335 result = dt_lookup_dir(env, p, name, fid);
337 o = dt_locate(env, dt, fid);
346 * Open dt object named \a filename from \a dirname directory.
347 * \param dt dt device
348 * \param fid on success, object fid is stored in *fid
350 struct dt_object *dt_store_open(const struct lu_env *env,
351 struct dt_device *dt,
353 const char *filename,
356 struct dt_object *file;
357 struct dt_object *dir;
359 dir = dt_store_resolve(env, dt, dirname, fid);
361 file = dt_reg_open(env, dt, dir,
363 lu_object_put(env, &dir->do_lu);
369 EXPORT_SYMBOL(dt_store_open);
371 struct dt_object *dt_find_or_create(const struct lu_env *env,
372 struct dt_device *dt,
373 const struct lu_fid *fid,
374 struct dt_object_format *dof,
377 struct dt_object *dto;
383 dto = dt_locate(env, dt, fid);
387 LASSERT(dto != NULL);
388 if (dt_object_exists(dto))
391 th = dt_trans_create(env, dt);
393 GOTO(out, rc = PTR_ERR(th));
395 rc = dt_declare_create(env, dto, at, NULL, dof, th);
397 GOTO(trans_stop, rc);
399 rc = dt_trans_start_local(env, dt, th);
401 GOTO(trans_stop, rc);
403 dt_write_lock(env, dto, 0);
404 if (dt_object_exists(dto))
405 GOTO(unlock, rc = 0);
407 CDEBUG(D_OTHER, "create new object "DFID"\n", PFID(fid));
409 rc = dt_create(env, dto, at, NULL, dof, th);
412 LASSERT(dt_object_exists(dto));
414 dt_write_unlock(env, dto);
416 dt_trans_stop(env, dt, th);
419 lu_object_put(env, &dto->do_lu);
424 EXPORT_SYMBOL(dt_find_or_create);
426 /* dt class init function. */
427 int dt_global_init(void)
431 LU_CONTEXT_KEY_INIT(&dt_key);
432 result = lu_context_key_register(&dt_key);
436 void dt_global_fini(void)
438 lu_context_key_degister(&dt_key);
442 * Generic read helper. May return an error for partial reads.
444 * \param env lustre environment
445 * \param dt object to be read
446 * \param buf lu_buf to be filled, with buffer pointer and length
447 * \param pos position to start reading, updated as data is read
449 * \retval real size of data read
450 * \retval -ve errno on failure
452 int dt_read(const struct lu_env *env, struct dt_object *dt,
453 struct lu_buf *buf, loff_t *pos)
455 LASSERTF(dt != NULL, "dt is NULL when we want to read record\n");
456 return dt->do_body_ops->dbo_read(env, dt, buf, pos, BYPASS_CAPA);
458 EXPORT_SYMBOL(dt_read);
461 * Read structures of fixed size from storage. Unlike dt_read(), using
462 * dt_record_read() will return an error for partial reads.
464 * \param env lustre environment
465 * \param dt object to be read
466 * \param buf lu_buf to be filled, with buffer pointer and length
467 * \param pos position to start reading, updated as data is read
469 * \retval 0 on successfully reading full buffer
470 * \retval -EFAULT on short read
471 * \retval -ve errno on failure
473 int dt_record_read(const struct lu_env *env, struct dt_object *dt,
474 struct lu_buf *buf, loff_t *pos)
478 LASSERTF(dt != NULL, "dt is NULL when we want to read record\n");
480 rc = dt->do_body_ops->dbo_read(env, dt, buf, pos, BYPASS_CAPA);
482 if (rc == buf->lb_len)
488 EXPORT_SYMBOL(dt_record_read);
490 int dt_record_write(const struct lu_env *env, struct dt_object *dt,
491 const struct lu_buf *buf, loff_t *pos, struct thandle *th)
495 LASSERTF(dt != NULL, "dt is NULL when we want to write record\n");
497 LASSERT(dt->do_body_ops);
498 LASSERT(dt->do_body_ops->dbo_write);
499 rc = dt->do_body_ops->dbo_write(env, dt, buf, pos, th, BYPASS_CAPA, 1);
500 if (rc == buf->lb_len)
506 EXPORT_SYMBOL(dt_record_write);
508 int dt_declare_version_set(const struct lu_env *env, struct dt_object *o,
512 char *xname = XATTR_NAME_VERSION;
516 vbuf.lb_len = sizeof(dt_obj_version_t);
517 return dt_declare_xattr_set(env, o, &vbuf, xname, 0, th);
520 EXPORT_SYMBOL(dt_declare_version_set);
522 void dt_version_set(const struct lu_env *env, struct dt_object *o,
523 dt_obj_version_t version, struct thandle *th)
526 char *xname = XATTR_NAME_VERSION;
530 vbuf.lb_buf = &version;
531 vbuf.lb_len = sizeof(version);
533 rc = dt_xattr_set(env, o, &vbuf, xname, 0, th, BYPASS_CAPA);
535 CDEBUG(D_INODE, "Can't set version, rc %d\n", rc);
538 EXPORT_SYMBOL(dt_version_set);
540 dt_obj_version_t dt_version_get(const struct lu_env *env, struct dt_object *o)
543 char *xname = XATTR_NAME_VERSION;
544 dt_obj_version_t version;
548 vbuf.lb_buf = &version;
549 vbuf.lb_len = sizeof(version);
550 rc = dt_xattr_get(env, o, &vbuf, xname, BYPASS_CAPA);
551 if (rc != sizeof(version)) {
552 CDEBUG(D_INODE, "Can't get version, rc %d\n", rc);
557 EXPORT_SYMBOL(dt_version_get);
559 /* list of all supported index types */
562 const struct dt_index_features dt_directory_features;
563 EXPORT_SYMBOL(dt_directory_features);
566 const struct dt_index_features dt_otable_features;
567 EXPORT_SYMBOL(dt_otable_features);
570 const struct dt_index_features dt_lfsck_orphan_features = {
572 .dif_keysize_min = sizeof(struct lu_fid),
573 .dif_keysize_max = sizeof(struct lu_fid),
574 .dif_recsize_min = sizeof(struct lu_orphan_rec),
575 .dif_recsize_max = sizeof(struct lu_orphan_rec),
578 EXPORT_SYMBOL(dt_lfsck_orphan_features);
581 const struct dt_index_features dt_lfsck_features = {
582 .dif_flags = DT_IND_UPDATE,
583 .dif_keysize_min = sizeof(struct lu_fid),
584 .dif_keysize_max = sizeof(struct lu_fid),
585 .dif_recsize_min = sizeof(__u8),
586 .dif_recsize_max = sizeof(__u8),
589 EXPORT_SYMBOL(dt_lfsck_features);
591 /* accounting indexes */
592 const struct dt_index_features dt_acct_features = {
593 .dif_flags = DT_IND_UPDATE,
594 .dif_keysize_min = sizeof(__u64), /* 64-bit uid/gid */
595 .dif_keysize_max = sizeof(__u64), /* 64-bit uid/gid */
596 .dif_recsize_min = sizeof(struct lquota_acct_rec), /* 16 bytes */
597 .dif_recsize_max = sizeof(struct lquota_acct_rec), /* 16 bytes */
600 EXPORT_SYMBOL(dt_acct_features);
602 /* global quota files */
603 const struct dt_index_features dt_quota_glb_features = {
604 .dif_flags = DT_IND_UPDATE,
605 /* a different key would have to be used for per-directory quota */
606 .dif_keysize_min = sizeof(__u64), /* 64-bit uid/gid */
607 .dif_keysize_max = sizeof(__u64), /* 64-bit uid/gid */
608 .dif_recsize_min = sizeof(struct lquota_glb_rec), /* 32 bytes */
609 .dif_recsize_max = sizeof(struct lquota_glb_rec), /* 32 bytes */
612 EXPORT_SYMBOL(dt_quota_glb_features);
614 /* slave quota files */
615 const struct dt_index_features dt_quota_slv_features = {
616 .dif_flags = DT_IND_UPDATE,
617 /* a different key would have to be used for per-directory quota */
618 .dif_keysize_min = sizeof(__u64), /* 64-bit uid/gid */
619 .dif_keysize_max = sizeof(__u64), /* 64-bit uid/gid */
620 .dif_recsize_min = sizeof(struct lquota_slv_rec), /* 8 bytes */
621 .dif_recsize_max = sizeof(struct lquota_slv_rec), /* 8 bytes */
624 EXPORT_SYMBOL(dt_quota_slv_features);
626 /* helper function returning what dt_index_features structure should be used
627 * based on the FID sequence. This is used by OBD_IDX_READ RPC */
628 static inline const struct dt_index_features *dt_index_feat_select(__u64 seq,
631 if (seq == FID_SEQ_QUOTA_GLB) {
632 /* global quota index */
634 /* global quota index should be a regular file */
635 return ERR_PTR(-ENOENT);
636 return &dt_quota_glb_features;
637 } else if (seq == FID_SEQ_QUOTA) {
638 /* quota slave index */
640 /* slave index should be a regular file */
641 return ERR_PTR(-ENOENT);
642 return &dt_quota_slv_features;
643 } else if (seq == FID_SEQ_LAYOUT_RBTREE){
644 return &dt_lfsck_orphan_features;
645 } else if (seq >= FID_SEQ_NORMAL) {
646 /* object is part of the namespace, verify that it is a
649 /* sorry, we can only deal with directory */
650 return ERR_PTR(-ENOTDIR);
651 return &dt_directory_features;
654 return ERR_PTR(-EOPNOTSUPP);
658 * Fill a lu_idxpage with key/record pairs read for transfer via OBD_IDX_READ
661 * \param env - is the environment passed by the caller
662 * \param lp - is a pointer to the lu_page to fill
663 * \param nob - is the maximum number of bytes that should be copied
664 * \param iops - is the index operation vector associated with the index object
665 * \param it - is a pointer to the current iterator
666 * \param attr - is the index attribute to pass to iops->rec()
667 * \param arg - is a pointer to the idx_info structure
669 static int dt_index_page_build(const struct lu_env *env, union lu_page *lp,
670 int nob, const struct dt_it_ops *iops,
671 struct dt_it *it, __u32 attr, void *arg)
673 struct idx_info *ii = (struct idx_info *)arg;
674 struct lu_idxpage *lip = &lp->lp_idx;
679 /* initialize the header of the new container */
680 memset(lip, 0, LIP_HDR_SIZE);
681 lip->lip_magic = LIP_MAGIC;
684 /* compute size needed to store a key/record pair */
685 size = ii->ii_recsize + ii->ii_keysize;
686 if ((ii->ii_flags & II_FL_NOHASH) == 0)
687 /* add hash if the client wants it */
688 size += sizeof(__u64);
690 entry = lip->lip_entries;
692 char *tmp_entry = entry;
698 /* fetch 64-bit hash value */
699 hash = iops->store(env, it);
700 ii->ii_hash_end = hash;
702 if (OBD_FAIL_CHECK(OBD_FAIL_OBD_IDX_READ_BREAK)) {
703 if (lip->lip_nr != 0)
708 if (lip->lip_nr == 0)
709 GOTO(out, rc = -EINVAL);
713 if (!(ii->ii_flags & II_FL_NOHASH)) {
714 /* client wants to the 64-bit hash value associated with
716 memcpy(tmp_entry, &hash, sizeof(hash));
717 tmp_entry += sizeof(hash);
720 if (ii->ii_flags & II_FL_VARKEY)
721 keysize = iops->key_size(env, it);
723 keysize = ii->ii_keysize;
725 if (!(ii->ii_flags & II_FL_NOKEY)) {
726 /* then the key value */
727 key = iops->key(env, it);
728 memcpy(tmp_entry, key, keysize);
729 tmp_entry += keysize;
732 /* and finally the record */
733 rc = iops->rec(env, it, (struct dt_rec *)tmp_entry, attr);
738 /* hash/key/record successfully copied! */
740 if (unlikely(lip->lip_nr == 1 && ii->ii_count == 0))
741 ii->ii_hash_start = hash;
743 if (ii->ii_flags & II_FL_VARREC)
744 recsize = iops->rec_size(env, it, attr);
746 recsize = ii->ii_recsize;
748 entry = tmp_entry + recsize;
752 /* move on to the next record */
754 rc = iops->next(env, it);
755 } while (rc == -ESTALE);
761 if (rc >= 0 && lip->lip_nr > 0)
762 /* one more container */
765 /* no more entries */
766 ii->ii_hash_end = II_END_OFF;
772 * Walk index and fill lu_page containers with key/record pairs
774 * \param env - is the environment passed by the caller
775 * \param obj - is the index object to parse
776 * \param rdpg - is the lu_rdpg descriptor associated with the transfer
777 * \param filler - is the callback function responsible for filling a lu_page
778 * with key/record pairs in the format wanted by the caller
779 * \param arg - is an opaq argument passed to the filler function
781 * \retval sum (in bytes) of all filled lu_pages
782 * \retval -ve errno on failure
784 int dt_index_walk(const struct lu_env *env, struct dt_object *obj,
785 const struct lu_rdpg *rdpg, dt_index_page_build_t filler,
789 const struct dt_it_ops *iops;
790 unsigned int pageidx, nob, nlupgs = 0;
794 LASSERT(rdpg->rp_pages != NULL);
795 LASSERT(obj->do_index_ops != NULL);
797 nob = rdpg->rp_count;
801 /* Iterate through index and fill containers from @rdpg */
802 iops = &obj->do_index_ops->dio_it;
803 LASSERT(iops != NULL);
804 it = iops->init(env, obj, rdpg->rp_attrs, BYPASS_CAPA);
808 rc = iops->load(env, it, rdpg->rp_hash);
811 * Iterator didn't find record with exactly the key requested.
813 * It is currently either
815 * - positioned above record with key less than
816 * requested---skip it.
817 * - or not positioned at all (is in IAM_IT_SKEWED
818 * state)---position it on the next item.
820 rc = iops->next(env, it);
829 /* Fill containers one after the other. There might be multiple
830 * containers per physical page.
832 * At this point and across for-loop:
833 * rc == 0 -> ok, proceed.
834 * rc > 0 -> end of index.
835 * rc < 0 -> error. */
836 for (pageidx = 0; rc == 0 && nob > 0; pageidx++) {
840 LASSERT(pageidx < rdpg->rp_npages);
841 lp = kmap(rdpg->rp_pages[pageidx]);
844 for (i = 0; i < LU_PAGE_COUNT; i++, lp++, nob -= LU_PAGE_SIZE) {
845 rc = filler(env, lp, min_t(int, nob, LU_PAGE_SIZE),
846 iops, it, rdpg->rp_attrs, arg);
849 /* one more lu_page */
855 kunmap(rdpg->rp_pages[i]);
863 rc = min_t(unsigned int, nlupgs * LU_PAGE_SIZE, rdpg->rp_count);
867 EXPORT_SYMBOL(dt_index_walk);
870 * Walk key/record pairs of an index and copy them into 4KB containers to be
871 * transferred over the network. This is the common handler for OBD_IDX_READ
874 * \param env - is the environment passed by the caller
875 * \param dev - is the dt_device storing the index
876 * \param ii - is the idx_info structure packed by the client in the
877 * OBD_IDX_READ request
878 * \param rdpg - is the lu_rdpg descriptor
880 * \retval on success, return sum (in bytes) of all filled containers
881 * \retval appropriate error otherwise.
883 int dt_index_read(const struct lu_env *env, struct dt_device *dev,
884 struct idx_info *ii, const struct lu_rdpg *rdpg)
886 const struct dt_index_features *feat;
887 struct dt_object *obj;
891 /* rp_count shouldn't be null and should be a multiple of the container
893 if (rdpg->rp_count <= 0 && (rdpg->rp_count & (LU_PAGE_SIZE - 1)) != 0)
896 if (!fid_is_quota(&ii->ii_fid) && !fid_is_layout_rbtree(&ii->ii_fid) &&
897 !fid_is_norm(&ii->ii_fid))
900 /* lookup index object subject to the transfer */
901 obj = dt_locate(env, dev, &ii->ii_fid);
903 RETURN(PTR_ERR(obj));
904 if (dt_object_exists(obj) == 0)
905 GOTO(out, rc = -ENOENT);
907 /* fetch index features associated with index object */
908 feat = dt_index_feat_select(fid_seq(&ii->ii_fid),
909 lu_object_attr(&obj->do_lu));
911 GOTO(out, rc = PTR_ERR(feat));
913 /* load index feature if not done already */
914 if (obj->do_index_ops == NULL) {
915 rc = obj->do_ops->do_index_try(env, obj, feat);
920 /* fill ii_flags with supported index features */
921 ii->ii_flags &= (II_FL_NOHASH | II_FL_NOKEY | II_FL_VARKEY |
924 if (!(feat->dif_flags & DT_IND_VARKEY))
925 ii->ii_keysize = feat->dif_keysize_max;
927 if (!(feat->dif_flags & DT_IND_VARREC))
928 ii->ii_recsize = feat->dif_recsize_max;
930 if (!(feat->dif_flags & DT_IND_NONUNQ))
931 /* key isn't necessarily unique */
932 ii->ii_flags |= II_FL_NONUNQ;
934 if (!fid_is_layout_rbtree(&ii->ii_fid)) {
935 dt_read_lock(env, obj, 0);
936 /* fetch object version before walking the index */
937 ii->ii_version = dt_version_get(env, obj);
940 /* walk the index and fill lu_idxpages with key/record pairs */
941 rc = dt_index_walk(env, obj, rdpg, dt_index_page_build, ii);
942 if (!fid_is_layout_rbtree(&ii->ii_fid))
943 dt_read_unlock(env, obj);
947 LASSERT(ii->ii_count == 0);
948 ii->ii_hash_end = II_END_OFF;
953 lu_object_put(env, &obj->do_lu);
956 EXPORT_SYMBOL(dt_index_read);
959 #ifndef HAVE_ONLY_PROCFS_SEQ
960 int lprocfs_dt_rd_blksize(char *page, char **start, off_t off,
961 int count, int *eof, void *data)
963 struct dt_device *dt = data;
964 struct obd_statfs osfs;
966 int rc = dt_statfs(NULL, dt, &osfs);
969 rc = snprintf(page, count, "%u\n",
970 (unsigned) osfs.os_bsize);
975 EXPORT_SYMBOL(lprocfs_dt_rd_blksize);
977 int lprocfs_dt_rd_kbytestotal(char *page, char **start, off_t off,
978 int count, int *eof, void *data)
980 struct dt_device *dt = data;
981 struct obd_statfs osfs;
983 int rc = dt_statfs(NULL, dt, &osfs);
985 __u32 blk_size = osfs.os_bsize >> 10;
986 __u64 result = osfs.os_blocks;
988 while (blk_size >>= 1)
992 rc = snprintf(page, count, LPU64"\n", result);
997 EXPORT_SYMBOL(lprocfs_dt_rd_kbytestotal);
999 int lprocfs_dt_rd_kbytesfree(char *page, char **start, off_t off,
1000 int count, int *eof, void *data)
1002 struct dt_device *dt = data;
1003 struct obd_statfs osfs;
1005 int rc = dt_statfs(NULL, dt, &osfs);
1007 __u32 blk_size = osfs.os_bsize >> 10;
1008 __u64 result = osfs.os_bfree;
1010 while (blk_size >>= 1)
1014 rc = snprintf(page, count, LPU64"\n", result);
1019 EXPORT_SYMBOL(lprocfs_dt_rd_kbytesfree);
1021 int lprocfs_dt_rd_kbytesavail(char *page, char **start, off_t off,
1022 int count, int *eof, void *data)
1024 struct dt_device *dt = data;
1025 struct obd_statfs osfs;
1027 int rc = dt_statfs(NULL, dt, &osfs);
1029 __u32 blk_size = osfs.os_bsize >> 10;
1030 __u64 result = osfs.os_bavail;
1032 while (blk_size >>= 1)
1036 rc = snprintf(page, count, LPU64"\n", result);
1041 EXPORT_SYMBOL(lprocfs_dt_rd_kbytesavail);
1043 int lprocfs_dt_rd_filestotal(char *page, char **start, off_t off,
1044 int count, int *eof, void *data)
1046 struct dt_device *dt = data;
1047 struct obd_statfs osfs;
1049 int rc = dt_statfs(NULL, dt, &osfs);
1052 rc = snprintf(page, count, LPU64"\n", osfs.os_files);
1057 EXPORT_SYMBOL(lprocfs_dt_rd_filestotal);
1059 int lprocfs_dt_rd_filesfree(char *page, char **start, off_t off,
1060 int count, int *eof, void *data)
1062 struct dt_device *dt = data;
1063 struct obd_statfs osfs;
1065 int rc = dt_statfs(NULL, dt, &osfs);
1068 rc = snprintf(page, count, LPU64"\n", osfs.os_ffree);
1073 EXPORT_SYMBOL(lprocfs_dt_rd_filesfree);
1076 int lprocfs_dt_blksize_seq_show(struct seq_file *m, void *v)
1078 struct dt_device *dt = m->private;
1079 struct obd_statfs osfs;
1081 int rc = dt_statfs(NULL, dt, &osfs);
1083 seq_printf(m, "%u\n", (unsigned) osfs.os_bsize);
1086 EXPORT_SYMBOL(lprocfs_dt_blksize_seq_show);
1088 int lprocfs_dt_kbytestotal_seq_show(struct seq_file *m, void *v)
1090 struct dt_device *dt = m->private;
1091 struct obd_statfs osfs;
1093 int rc = dt_statfs(NULL, dt, &osfs);
1095 __u32 blk_size = osfs.os_bsize >> 10;
1096 __u64 result = osfs.os_blocks;
1098 while (blk_size >>= 1)
1101 seq_printf(m, LPU64"\n", result);
1105 EXPORT_SYMBOL(lprocfs_dt_kbytestotal_seq_show);
1107 int lprocfs_dt_kbytesfree_seq_show(struct seq_file *m, void *v)
1109 struct dt_device *dt = m->private;
1110 struct obd_statfs osfs;
1112 int rc = dt_statfs(NULL, dt, &osfs);
1114 __u32 blk_size = osfs.os_bsize >> 10;
1115 __u64 result = osfs.os_bfree;
1117 while (blk_size >>= 1)
1120 seq_printf(m, LPU64"\n", result);
1124 EXPORT_SYMBOL(lprocfs_dt_kbytesfree_seq_show);
1126 int lprocfs_dt_kbytesavail_seq_show(struct seq_file *m, void *v)
1128 struct dt_device *dt = m->private;
1129 struct obd_statfs osfs;
1131 int rc = dt_statfs(NULL, dt, &osfs);
1133 __u32 blk_size = osfs.os_bsize >> 10;
1134 __u64 result = osfs.os_bavail;
1136 while (blk_size >>= 1)
1139 seq_printf(m, LPU64"\n", result);
1143 EXPORT_SYMBOL(lprocfs_dt_kbytesavail_seq_show);
1145 int lprocfs_dt_filestotal_seq_show(struct seq_file *m, void *v)
1147 struct dt_device *dt = m->private;
1148 struct obd_statfs osfs;
1150 int rc = dt_statfs(NULL, dt, &osfs);
1152 seq_printf(m, LPU64"\n", osfs.os_files);
1155 EXPORT_SYMBOL(lprocfs_dt_filestotal_seq_show);
1157 int lprocfs_dt_filesfree_seq_show(struct seq_file *m, void *v)
1159 struct dt_device *dt = m->private;
1160 struct obd_statfs osfs;
1162 int rc = dt_statfs(NULL, dt, &osfs);
1164 seq_printf(m, LPU64"\n", osfs.os_ffree);
1167 EXPORT_SYMBOL(lprocfs_dt_filesfree_seq_show);
1169 #endif /* LPROCFS */