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,
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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).
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17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
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30 * Copyright (c) 2012, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/osd-zfs/osd_xattr.c
37 * functions to manipulate extended attributes and system attributes
39 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
40 * Author: Mike Pershin <tappro@whamcloud.com>
43 #define DEBUG_SUBSYSTEM S_OSD
45 #include <lustre_ver.h>
46 #include <libcfs/libcfs.h>
47 #include <obd_support.h>
48 #include <lustre_net.h>
50 #include <obd_class.h>
51 #include <lustre_disk.h>
52 #include <lustre_fid.h>
54 #include "osd_internal.h"
56 #include <sys/dnode.h>
61 #include <sys/spa_impl.h>
62 #include <sys/zfs_znode.h>
63 #include <sys/dmu_tx.h>
64 #include <sys/dmu_objset.h>
65 #include <sys/dsl_prop.h>
66 #include <sys/sa_impl.h>
69 #include <linux/posix_acl_xattr.h>
72 int __osd_xattr_load(struct osd_device *osd, uint64_t dnode, nvlist_t **sa)
78 if (unlikely(dnode == ZFS_NO_OBJECT))
81 rc = -sa_handle_get(osd->od_os, dnode, NULL, SA_HDL_PRIVATE, &sa_hdl);
85 rc = -sa_size(sa_hdl, SA_ZPL_DXATTR(osd), &size);
88 rc = -nvlist_alloc(sa, NV_UNIQUE_NAME, KM_SLEEP);
92 buf = osd_zio_buf_alloc(size);
97 rc = -sa_lookup(sa_hdl, SA_ZPL_DXATTR(osd), buf, size);
99 rc = -nvlist_unpack(buf, size, sa, KM_SLEEP);
100 osd_zio_buf_free(buf, size);
102 sa_handle_destroy(sa_hdl);
107 static inline int __osd_xattr_cache(const struct lu_env *env,
108 struct osd_object *obj)
110 LASSERT(obj->oo_sa_xattr == NULL);
111 LASSERT(obj->oo_db != NULL);
113 return __osd_xattr_load(osd_obj2dev(obj), obj->oo_db->db_object,
118 __osd_sa_xattr_get(const struct lu_env *env, struct osd_object *obj,
119 const struct lu_buf *buf, const char *name, int *sizep)
124 LASSERT(obj->oo_sa_hdl);
126 if (obj->oo_sa_xattr == NULL) {
127 rc = __osd_xattr_cache(env, obj);
132 LASSERT(obj->oo_sa_xattr);
133 rc = -nvlist_lookup_byte_array(obj->oo_sa_xattr, name, &nv_value,
138 if (buf == NULL || buf->lb_buf == NULL) {
139 /* return the required size by *sizep */
143 if (*sizep > buf->lb_len)
144 return -ERANGE; /* match ldiskfs error */
146 memcpy(buf->lb_buf, nv_value, *sizep);
150 int __osd_xattr_get_large(const struct lu_env *env, struct osd_device *osd,
151 uint64_t xattr, struct lu_buf *buf,
152 const char *name, int *sizep)
154 dmu_buf_t *xa_data_db;
155 sa_handle_t *sa_hdl = NULL;
156 uint64_t xa_data_obj, size;
159 /* are there any extended attributes? */
160 if (xattr == ZFS_NO_OBJECT)
163 /* Lookup the object number containing the xattr data */
164 rc = -zap_lookup(osd->od_os, xattr, name, sizeof(uint64_t), 1,
169 rc = __osd_obj2dbuf(env, osd->od_os, xa_data_obj, &xa_data_db);
173 rc = -sa_handle_get(osd->od_os, xa_data_obj, NULL, SA_HDL_PRIVATE,
178 /* Get the xattr value length / object size */
179 rc = -sa_lookup(sa_hdl, SA_ZPL_SIZE(osd), &size, 8);
183 if (size > INT_MAX) {
190 if (buf == NULL || buf->lb_buf == NULL) {
191 /* We only need to return the required size */
194 if (*sizep > buf->lb_len) {
195 rc = -ERANGE; /* match ldiskfs error */
199 rc = -dmu_read(osd->od_os, xa_data_db->db_object, 0,
200 size, buf->lb_buf, DMU_READ_PREFETCH);
203 sa_handle_destroy(sa_hdl);
205 dmu_buf_rele(xa_data_db, FTAG);
211 * Copy an extended attribute into the buffer provided, or compute
212 * the required buffer size if \a buf is NULL.
214 * On success, the number of bytes used or required is stored in \a sizep.
216 * Note that no locking is done here.
218 * \param[in] env execution environment
219 * \param[in] obj object for which to retrieve xattr
220 * \param[out] buf buffer to store xattr value in
221 * \param[in] name name of xattr to copy
222 * \param[out] sizep bytes used or required to store xattr
224 * \retval 0 on success
225 * \retval negative negated errno on failure
227 int __osd_xattr_get(const struct lu_env *env, struct osd_object *obj,
228 struct lu_buf *buf, const char *name, int *sizep)
232 if (unlikely(!dt_object_exists(&obj->oo_dt) || obj->oo_destroyed))
235 /* check SA_ZPL_DXATTR first then fallback to directory xattr */
236 rc = __osd_sa_xattr_get(env, obj, buf, name, sizep);
240 return __osd_xattr_get_large(env, osd_obj2dev(obj), obj->oo_xattr,
244 int osd_xattr_get(const struct lu_env *env, struct dt_object *dt,
245 struct lu_buf *buf, const char *name)
247 struct osd_object *obj = osd_dt_obj(dt);
251 LASSERT(obj->oo_db != NULL);
252 LASSERT(osd_invariant(obj));
254 if (!osd_obj2dev(obj)->od_posix_acl &&
255 (strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS) == 0 ||
256 strcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT) == 0))
259 down_read(&obj->oo_guard);
260 rc = __osd_xattr_get(env, obj, buf, name, &size);
261 up_read(&obj->oo_guard);
270 void __osd_xattr_declare_set(const struct lu_env *env, struct osd_object *obj,
271 int vallen, const char *name,
272 struct osd_thandle *oh)
274 struct osd_device *osd = osd_obj2dev(obj);
275 dmu_buf_t *db = obj->oo_db;
276 dmu_tx_t *tx = oh->ot_tx;
277 uint64_t xa_data_obj;
281 if (unlikely(obj->oo_destroyed))
284 here = dt_object_exists(&obj->oo_dt);
286 /* object may be not yet created */
289 LASSERT(obj->oo_sa_hdl);
290 /* we might just update SA_ZPL_DXATTR */
291 dmu_tx_hold_sa(tx, obj->oo_sa_hdl, 1);
293 if (obj->oo_xattr == ZFS_NO_OBJECT)
297 if (!here || rc == -ENOENT) {
298 /* we'll be updating SA_ZPL_XATTR */
300 LASSERT(obj->oo_sa_hdl);
301 dmu_tx_hold_sa(tx, obj->oo_sa_hdl, 1);
303 /* xattr zap + entry */
304 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, TRUE, (char *) name);
305 /* xattr value obj */
306 dmu_tx_hold_sa_create(tx, ZFS_SA_BASE_ATTR_SIZE);
307 dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, vallen);
311 rc = -zap_lookup(osd->od_os, obj->oo_xattr, name, sizeof(uint64_t), 1,
315 * Entry already exists.
316 * We'll truncate the existing object.
318 dmu_tx_hold_bonus(tx, xa_data_obj);
319 dmu_tx_hold_free(tx, xa_data_obj, vallen, DMU_OBJECT_END);
320 dmu_tx_hold_write(tx, xa_data_obj, 0, vallen);
322 } else if (rc == -ENOENT) {
324 * Entry doesn't exist, we need to create a new one and a new
325 * object to store the value.
327 dmu_tx_hold_bonus(tx, obj->oo_xattr);
328 dmu_tx_hold_zap(tx, obj->oo_xattr, TRUE, (char *) name);
329 dmu_tx_hold_sa_create(tx, ZFS_SA_BASE_ATTR_SIZE);
330 dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, vallen);
334 /* An error happened */
338 int osd_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
339 const struct lu_buf *buf, const char *name,
340 int fl, struct thandle *handle)
342 struct osd_object *obj = osd_dt_obj(dt);
343 struct osd_thandle *oh;
346 LASSERT(handle != NULL);
347 oh = container_of0(handle, struct osd_thandle, ot_super);
349 down_read(&obj->oo_guard);
350 __osd_xattr_declare_set(env, obj, buf->lb_len, name, oh);
351 up_read(&obj->oo_guard);
356 int __osd_sa_xattr_update(const struct lu_env *env, struct osd_object *obj,
357 struct osd_thandle *oh)
359 struct lu_buf *lb = &osd_oti_get(env)->oti_xattr_lbuf;
360 struct osd_device *osd = osd_obj2dev(obj);
365 obj->oo_late_xattr = 0;
367 /* Update the SA for additions, modifications, and removals. */
368 rc = -nvlist_size(obj->oo_sa_xattr, &size, NV_ENCODE_XDR);
372 lu_buf_check_and_alloc(lb, size);
373 if (lb->lb_buf == NULL) {
374 CERROR("%s: can't allocate buffer for xattr update\n",
380 rc = -nvlist_pack(obj->oo_sa_xattr, &dxattr, &size,
381 NV_ENCODE_XDR, KM_SLEEP);
384 LASSERT(dxattr == lb->lb_buf);
386 sa_update(obj->oo_sa_hdl, SA_ZPL_DXATTR(osd), dxattr, size, oh->ot_tx);
392 * Set an extended attribute.
393 * This transaction must have called udmu_xattr_declare_set() first.
395 * Returns 0 on success or a negative error number on failure.
397 * No locking is done here.
399 int __osd_sa_xattr_schedule_update(const struct lu_env *env,
400 struct osd_object *obj,
401 struct osd_thandle *oh)
404 LASSERT(obj->oo_sa_hdl);
405 LASSERT(obj->oo_sa_xattr);
407 /* schedule batched SA update in osd_object_sa_dirty_rele() */
408 obj->oo_late_xattr = 1;
409 osd_object_sa_dirty_add(obj, oh);
415 int __osd_sa_xattr_set(const struct lu_env *env, struct osd_object *obj,
416 const struct lu_buf *buf, const char *name, int fl,
417 struct osd_thandle *oh)
426 LASSERT(obj->oo_sa_hdl);
427 if (obj->oo_sa_xattr == NULL) {
428 rc = __osd_xattr_cache(env, obj);
433 LASSERT(obj->oo_sa_xattr);
434 /* Limited to 32k to keep nvpair memory allocations small */
435 if (buf->lb_len > DXATTR_MAX_ENTRY_SIZE) {
438 /* Prevent the DXATTR SA from consuming the entire SA
440 rc = -nvlist_size(obj->oo_sa_xattr, &size, NV_ENCODE_XDR);
444 if (size + buf->lb_len > DXATTR_MAX_SA_SIZE)
448 /* even in case of -EFBIG we must lookup xattr and check can we
449 * rewrite it then delete from SA */
450 rc = -nvlist_lookup_byte_array(obj->oo_sa_xattr, name, &nv_value,
453 if (fl & LU_XATTR_CREATE) {
455 } else if (too_big) {
456 rc = -nvlist_remove(obj->oo_sa_xattr, name,
457 DATA_TYPE_BYTE_ARRAY);
460 rc = __osd_sa_xattr_schedule_update(env, obj, oh);
461 return rc == 0 ? -EFBIG : rc;
463 } else if (rc == -ENOENT) {
464 if (fl & LU_XATTR_REPLACE)
472 /* Ensure xattr doesn't exist in ZAP */
473 if (obj->oo_xattr != ZFS_NO_OBJECT) {
474 struct osd_device *osd = osd_obj2dev(obj);
476 rc = -zap_lookup(osd->od_os, obj->oo_xattr,
479 rc = -dmu_object_free(osd->od_os, objid, oh->ot_tx);
481 zap_remove(osd->od_os, obj->oo_xattr,
486 rc = -nvlist_add_byte_array(obj->oo_sa_xattr, name,
487 (uchar_t *)buf->lb_buf, buf->lb_len);
491 /* batch updates only for just created dnodes where we
492 * used to set number of EAs in a single transaction */
493 db = (dmu_buf_impl_t *)obj->oo_db;
494 if (DB_DNODE(db)->dn_allocated_txg == oh->ot_tx->tx_txg)
495 rc = __osd_sa_xattr_schedule_update(env, obj, oh);
497 rc = __osd_sa_xattr_update(env, obj, oh);
503 __osd_xattr_set(const struct lu_env *env, struct osd_object *obj,
504 const struct lu_buf *buf, const char *name, int fl,
505 struct osd_thandle *oh)
507 struct osd_device *osd = osd_obj2dev(obj);
508 dmu_buf_t *xa_zap_db = NULL;
509 dmu_buf_t *xa_data_db = NULL;
510 uint64_t xa_data_obj;
511 sa_handle_t *sa_hdl = NULL;
512 dmu_tx_t *tx = oh->ot_tx;
516 LASSERT(obj->oo_sa_hdl);
518 if (obj->oo_xattr == ZFS_NO_OBJECT) {
519 struct lu_attr *la = &osd_oti_get(env)->oti_la;
521 la->la_valid = LA_MODE;
522 la->la_mode = S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO;
523 rc = __osd_zap_create(env, osd, &xa_zap_db, tx, la,
524 obj->oo_db->db_object, 0);
528 obj->oo_xattr = xa_zap_db->db_object;
529 rc = osd_object_sa_update(obj, SA_ZPL_XATTR(osd),
530 &obj->oo_xattr, 8, oh);
535 rc = -zap_lookup(osd->od_os, obj->oo_xattr, name, sizeof(uint64_t), 1,
538 if (fl & LU_XATTR_CREATE) {
543 * Entry already exists.
544 * We'll truncate the existing object.
546 rc = __osd_obj2dbuf(env, osd->od_os, xa_data_obj,
551 rc = -sa_handle_get(osd->od_os, xa_data_obj, NULL,
552 SA_HDL_PRIVATE, &sa_hdl);
556 rc = -sa_lookup(sa_hdl, SA_ZPL_SIZE(osd), &size, 8);
560 rc = -dmu_free_range(osd->od_os, xa_data_db->db_object,
561 0, DMU_OBJECT_END, tx);
564 } else if (rc == -ENOENT) {
565 struct lu_attr *la = &osd_oti_get(env)->oti_la;
567 * Entry doesn't exist, we need to create a new one and a new
568 * object to store the value.
570 if (fl & LU_XATTR_REPLACE) {
571 /* should be ENOATTR according to the
572 * man, but that is undefined here */
577 la->la_valid = LA_MODE;
578 la->la_mode = S_IFREG | S_IRUGO | S_IWUSR;
579 rc = __osd_object_create(env, obj, &xa_data_db, tx, la,
583 xa_data_obj = xa_data_db->db_object;
585 rc = -sa_handle_get(osd->od_os, xa_data_obj, NULL,
586 SA_HDL_PRIVATE, &sa_hdl);
590 rc = -zap_add(osd->od_os, obj->oo_xattr, name, sizeof(uint64_t),
591 1, &xa_data_obj, tx);
595 /* There was an error looking up the xattr name */
599 /* Finally write the xattr value */
600 dmu_write(osd->od_os, xa_data_obj, 0, buf->lb_len, buf->lb_buf, tx);
603 rc = -sa_update(sa_hdl, SA_ZPL_SIZE(osd), &size, 8, tx);
606 sa_handle_destroy(sa_hdl);
608 if (xa_data_db != NULL)
609 dmu_buf_rele(xa_data_db, FTAG);
610 if (xa_zap_db != NULL)
611 dmu_buf_rele(xa_zap_db, FTAG);
616 int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
617 const struct lu_buf *buf, const char *name, int fl,
618 struct thandle *handle)
620 struct osd_object *obj = osd_dt_obj(dt);
621 struct osd_thandle *oh;
625 LASSERT(handle != NULL);
626 LASSERT(osd_invariant(obj));
628 if (!osd_obj2dev(obj)->od_posix_acl &&
629 (strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS) == 0 ||
630 strcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT) == 0))
633 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LINKEA_OVERFLOW) &&
634 strcmp(name, XATTR_NAME_LINK) == 0)
637 oh = container_of0(handle, struct osd_thandle, ot_super);
639 down_write(&obj->oo_guard);
640 CDEBUG(D_INODE, "Setting xattr %s with size %d\n",
641 name, (int)buf->lb_len);
642 rc = osd_xattr_set_internal(env, obj, buf, name, fl, oh);
643 up_write(&obj->oo_guard);
649 __osd_xattr_declare_del(const struct lu_env *env, struct osd_object *obj,
650 const char *name, struct osd_thandle *oh)
652 struct osd_device *osd = osd_obj2dev(obj);
653 dmu_tx_t *tx = oh->ot_tx;
654 uint64_t xa_data_obj;
657 /* update SA_ZPL_DXATTR if xattr was in SA */
658 dmu_tx_hold_sa(tx, obj->oo_sa_hdl, 0);
660 if (obj->oo_xattr == ZFS_NO_OBJECT)
663 rc = -zap_lookup(osd->od_os, obj->oo_xattr, name, 8, 1, &xa_data_obj);
667 * We'll delete the existing object and ZAP entry.
669 dmu_tx_hold_bonus(tx, xa_data_obj);
670 dmu_tx_hold_free(tx, xa_data_obj, 0, DMU_OBJECT_END);
671 dmu_tx_hold_zap(tx, obj->oo_xattr, FALSE, (char *) name);
673 } else if (rc == -ENOENT) {
675 * Entry doesn't exist, nothing to be changed.
680 /* An error happened */
684 int osd_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
685 const char *name, struct thandle *handle)
687 struct osd_object *obj = osd_dt_obj(dt);
688 struct osd_thandle *oh;
691 LASSERT(handle != NULL);
692 LASSERT(osd_invariant(obj));
694 oh = container_of0(handle, struct osd_thandle, ot_super);
695 LASSERT(oh->ot_tx != NULL);
696 LASSERT(obj->oo_db != NULL);
698 down_read(&obj->oo_guard);
699 if (likely(dt_object_exists(&obj->oo_dt) && !obj->oo_destroyed))
700 __osd_xattr_declare_del(env, obj, name, oh);
701 up_read(&obj->oo_guard);
706 static int __osd_sa_xattr_del(const struct lu_env *env, struct osd_object *obj,
707 const char *name, struct osd_thandle *oh)
711 if (obj->oo_sa_xattr == NULL) {
712 rc = __osd_xattr_cache(env, obj);
717 rc = -nvlist_remove(obj->oo_sa_xattr, name, DATA_TYPE_BYTE_ARRAY);
719 rc = __osd_sa_xattr_schedule_update(env, obj, oh);
723 static int __osd_xattr_del(const struct lu_env *env, struct osd_object *obj,
724 const char *name, struct osd_thandle *oh)
726 struct osd_device *osd = osd_obj2dev(obj);
727 uint64_t xa_data_obj;
730 if (unlikely(!dt_object_exists(&obj->oo_dt) || obj->oo_destroyed))
733 /* try remove xattr from SA at first */
734 rc = __osd_sa_xattr_del(env, obj, name, oh);
738 if (obj->oo_xattr == ZFS_NO_OBJECT)
741 rc = -zap_lookup(osd->od_os, obj->oo_xattr, name, sizeof(uint64_t), 1,
745 } else if (rc == 0) {
748 * We'll delete the existing object and ZAP entry.
750 rc = -dmu_object_free(osd->od_os, xa_data_obj, oh->ot_tx);
754 rc = -zap_remove(osd->od_os, obj->oo_xattr, name, oh->ot_tx);
760 int osd_xattr_del(const struct lu_env *env, struct dt_object *dt,
761 const char *name, struct thandle *handle)
763 struct osd_object *obj = osd_dt_obj(dt);
764 struct osd_thandle *oh;
768 LASSERT(handle != NULL);
769 LASSERT(obj->oo_db != NULL);
770 LASSERT(osd_invariant(obj));
771 LASSERT(dt_object_exists(dt));
772 oh = container_of0(handle, struct osd_thandle, ot_super);
773 LASSERT(oh->ot_tx != NULL);
775 if (!osd_obj2dev(obj)->od_posix_acl &&
776 (strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS) == 0 ||
777 strcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT) == 0))
780 down_write(&obj->oo_guard);
781 rc = __osd_xattr_del(env, obj, name, oh);
782 up_write(&obj->oo_guard);
787 void osd_declare_xattrs_destroy(const struct lu_env *env,
788 struct osd_object *obj, struct osd_thandle *oh)
790 struct osd_device *osd = osd_obj2dev(obj);
791 zap_attribute_t *za = &osd_oti_get(env)->oti_za;
792 uint64_t oid = obj->oo_xattr, xid;
793 dmu_tx_t *tx = oh->ot_tx;
797 if (oid == ZFS_NO_OBJECT)
798 return; /* Nothing to do for SA xattrs */
800 /* Declare to free the ZAP holding xattrs */
801 dmu_tx_hold_free(tx, oid, 0, DMU_OBJECT_END);
803 rc = osd_zap_cursor_init(&zc, osd->od_os, oid, 0);
807 while (zap_cursor_retrieve(zc, za) == 0) {
808 LASSERT(za->za_num_integers == 1);
809 LASSERT(za->za_integer_length == sizeof(uint64_t));
811 rc = -zap_lookup(osd->od_os, oid, za->za_name,
812 sizeof(uint64_t), 1, &xid);
814 CERROR("%s: xattr %s lookup failed: rc = %d\n",
815 osd->od_svname, za->za_name, rc);
818 dmu_tx_hold_free(tx, xid, 0, DMU_OBJECT_END);
820 zap_cursor_advance(zc);
823 osd_zap_cursor_fini(zc);
825 if (rc && tx->tx_err == 0)
829 int osd_xattrs_destroy(const struct lu_env *env,
830 struct osd_object *obj, struct osd_thandle *oh)
832 struct osd_device *osd = osd_obj2dev(obj);
833 dmu_tx_t *tx = oh->ot_tx;
834 zap_attribute_t *za = &osd_oti_get(env)->oti_za;
839 /* The transaction must have been assigned to a transaction group. */
840 LASSERT(tx->tx_txg != 0);
842 if (obj->oo_xattr == ZFS_NO_OBJECT)
843 return 0; /* Nothing to do for SA xattrs */
845 /* Free the ZAP holding the xattrs */
846 rc = osd_zap_cursor_init(&zc, osd->od_os, obj->oo_xattr, 0);
850 while (zap_cursor_retrieve(zc, za) == 0) {
851 LASSERT(za->za_num_integers == 1);
852 LASSERT(za->za_integer_length == sizeof(uint64_t));
854 rc = -zap_lookup(osd->od_os, obj->oo_xattr, za->za_name,
855 sizeof(uint64_t), 1, &xid);
857 CERROR("%s: lookup xattr %s failed: rc = %d\n",
858 osd->od_svname, za->za_name, rc);
860 rc = -dmu_object_free(osd->od_os, xid, tx);
862 CERROR("%s: free xattr %s failed: rc = %d\n",
863 osd->od_svname, za->za_name, rc);
865 zap_cursor_advance(zc);
867 osd_zap_cursor_fini(zc);
869 rc = -dmu_object_free(osd->od_os, obj->oo_xattr, tx);
871 CERROR("%s: free xattr "LPU64" failed: rc = %d\n",
872 osd->od_svname, obj->oo_xattr, rc);
878 osd_sa_xattr_list(const struct lu_env *env, struct osd_object *obj,
879 const struct lu_buf *lb)
881 nvpair_t *nvp = NULL;
882 int len, counted = 0;
885 if (obj->oo_sa_xattr == NULL) {
886 rc = __osd_xattr_cache(env, obj);
891 LASSERT(obj->oo_sa_xattr);
893 while ((nvp = nvlist_next_nvpair(obj->oo_sa_xattr, nvp)) != NULL) {
894 const char *name = nvpair_name(nvp);
896 if (!osd_obj2dev(obj)->od_posix_acl &&
897 (strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS) == 0 ||
898 strcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT) == 0))
902 if (lb->lb_buf != NULL) {
903 if (counted + len + 1 > lb->lb_len)
906 memcpy(lb->lb_buf + counted, name, len + 1);
913 int osd_xattr_list(const struct lu_env *env, struct dt_object *dt,
914 const struct lu_buf *lb)
916 struct osd_object *obj = osd_dt_obj(dt);
917 struct osd_device *osd = osd_obj2dev(obj);
918 zap_attribute_t *za = &osd_oti_get(env)->oti_za;
923 LASSERT(obj->oo_db != NULL);
924 LASSERT(osd_invariant(obj));
925 LASSERT(dt_object_exists(dt));
927 down_read(&obj->oo_guard);
929 rc = osd_sa_xattr_list(env, obj, lb);
935 /* continue with dnode xattr if any */
936 if (obj->oo_xattr == ZFS_NO_OBJECT)
937 GOTO(out, rc = counted);
939 rc = osd_zap_cursor_init(&zc, osd->od_os, obj->oo_xattr, 0);
943 while ((rc = -zap_cursor_retrieve(zc, za)) == 0) {
944 if (!osd_obj2dev(obj)->od_posix_acl &&
945 (strcmp(za->za_name, XATTR_NAME_POSIX_ACL_ACCESS) == 0 ||
946 strcmp(za->za_name, XATTR_NAME_POSIX_ACL_DEFAULT) == 0)) {
947 zap_cursor_advance(zc);
951 rc = strlen(za->za_name);
952 if (lb->lb_buf != NULL) {
953 if (counted + rc + 1 > lb->lb_len)
954 GOTO(out_fini, rc = -ERANGE);
956 memcpy(lb->lb_buf + counted, za->za_name, rc + 1);
960 zap_cursor_advance(zc);
962 if (rc == -ENOENT) /* no more kes in the index */
964 else if (unlikely(rc < 0))
969 osd_zap_cursor_fini(zc);
971 up_read(&obj->oo_guard);