4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
22 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
25 #include <sys/zfs_context.h>
29 #include <sys/refcount.h>
30 #include <sys/nvpair.h>
32 #include <sys/kidmap.h>
34 #include <sys/zfs_vfsops.h>
35 #include <sys/zfs_znode.h>
37 #include <sys/zfs_fuid.h>
40 * FUID Domain table(s).
42 * The FUID table is stored as a packed nvlist of an array
43 * of nvlists which contain an index, domain string and offset
45 * During file system initialization the nvlist(s) are read and
46 * two AVL trees are created. One tree is keyed by the index number
47 * and the other by the domain string. Nodes are never removed from
48 * trees, but new entries may be added. If a new entry is added then
49 * the zsb->z_fuid_dirty flag is set to true and the caller will then
50 * be responsible for calling zfs_fuid_sync() to sync the changes to disk.
54 #define FUID_IDX "fuid_idx"
55 #define FUID_DOMAIN "fuid_domain"
56 #define FUID_OFFSET "fuid_offset"
57 #define FUID_NVP_ARRAY "fuid_nvlist"
59 typedef struct fuid_domain
{
66 static char *nulldomain
= "";
69 * Compare two indexes.
72 idx_compare(const void *arg1
, const void *arg2
)
74 const fuid_domain_t
*node1
= arg1
;
75 const fuid_domain_t
*node2
= arg2
;
77 if (node1
->f_idx
< node2
->f_idx
)
79 else if (node1
->f_idx
> node2
->f_idx
)
85 * Compare two domain strings.
88 domain_compare(const void *arg1
, const void *arg2
)
90 const fuid_domain_t
*node1
= arg1
;
91 const fuid_domain_t
*node2
= arg2
;
94 val
= strcmp(node1
->f_ksid
->kd_name
, node2
->f_ksid
->kd_name
);
97 return (val
> 0 ? 1 : -1);
101 zfs_fuid_avl_tree_create(avl_tree_t
*idx_tree
, avl_tree_t
*domain_tree
)
103 avl_create(idx_tree
, idx_compare
,
104 sizeof (fuid_domain_t
), offsetof(fuid_domain_t
, f_idxnode
));
105 avl_create(domain_tree
, domain_compare
,
106 sizeof (fuid_domain_t
), offsetof(fuid_domain_t
, f_domnode
));
110 * load initial fuid domain and idx trees. This function is used by
111 * both the kernel and zdb.
114 zfs_fuid_table_load(objset_t
*os
, uint64_t fuid_obj
, avl_tree_t
*idx_tree
,
115 avl_tree_t
*domain_tree
)
120 ASSERT(fuid_obj
!= 0);
121 VERIFY(0 == dmu_bonus_hold(os
, fuid_obj
,
123 fuid_size
= *(uint64_t *)db
->db_data
;
124 dmu_buf_rele(db
, FTAG
);
128 nvlist_t
*nvp
= NULL
;
133 packed
= kmem_alloc(fuid_size
, KM_SLEEP
);
134 VERIFY(dmu_read(os
, fuid_obj
, 0,
135 fuid_size
, packed
, DMU_READ_PREFETCH
) == 0);
136 VERIFY(nvlist_unpack(packed
, fuid_size
,
138 VERIFY(nvlist_lookup_nvlist_array(nvp
, FUID_NVP_ARRAY
,
139 &fuidnvp
, &count
) == 0);
141 for (i
= 0; i
!= count
; i
++) {
142 fuid_domain_t
*domnode
;
146 VERIFY(nvlist_lookup_string(fuidnvp
[i
], FUID_DOMAIN
,
148 VERIFY(nvlist_lookup_uint64(fuidnvp
[i
], FUID_IDX
,
151 domnode
= kmem_alloc(sizeof (fuid_domain_t
), KM_SLEEP
);
153 domnode
->f_idx
= idx
;
154 domnode
->f_ksid
= ksid_lookupdomain(domain
);
155 avl_add(idx_tree
, domnode
);
156 avl_add(domain_tree
, domnode
);
159 kmem_free(packed
, fuid_size
);
165 zfs_fuid_table_destroy(avl_tree_t
*idx_tree
, avl_tree_t
*domain_tree
)
167 fuid_domain_t
*domnode
;
171 while ((domnode
= avl_destroy_nodes(domain_tree
, &cookie
)))
172 ksiddomain_rele(domnode
->f_ksid
);
174 avl_destroy(domain_tree
);
176 while ((domnode
= avl_destroy_nodes(idx_tree
, &cookie
)))
177 kmem_free(domnode
, sizeof (fuid_domain_t
));
178 avl_destroy(idx_tree
);
182 zfs_fuid_idx_domain(avl_tree_t
*idx_tree
, uint32_t idx
)
184 fuid_domain_t searchnode
, *findnode
;
187 searchnode
.f_idx
= idx
;
189 findnode
= avl_find(idx_tree
, &searchnode
, &loc
);
191 return (findnode
? findnode
->f_ksid
->kd_name
: nulldomain
);
196 * Load the fuid table(s) into memory.
199 zfs_fuid_init(zfs_sb_t
*zsb
)
201 rw_enter(&zsb
->z_fuid_lock
, RW_WRITER
);
203 if (zsb
->z_fuid_loaded
) {
204 rw_exit(&zsb
->z_fuid_lock
);
208 zfs_fuid_avl_tree_create(&zsb
->z_fuid_idx
, &zsb
->z_fuid_domain
);
210 (void) zap_lookup(zsb
->z_os
, MASTER_NODE_OBJ
,
211 ZFS_FUID_TABLES
, 8, 1, &zsb
->z_fuid_obj
);
212 if (zsb
->z_fuid_obj
!= 0) {
213 zsb
->z_fuid_size
= zfs_fuid_table_load(zsb
->z_os
,
214 zsb
->z_fuid_obj
, &zsb
->z_fuid_idx
,
215 &zsb
->z_fuid_domain
);
218 zsb
->z_fuid_loaded
= B_TRUE
;
219 rw_exit(&zsb
->z_fuid_lock
);
223 * sync out AVL trees to persistent storage.
226 zfs_fuid_sync(zfs_sb_t
*zsb
, dmu_tx_t
*tx
)
233 fuid_domain_t
*domnode
;
237 if (!zsb
->z_fuid_dirty
) {
241 rw_enter(&zsb
->z_fuid_lock
, RW_WRITER
);
244 * First see if table needs to be created?
246 if (zsb
->z_fuid_obj
== 0) {
247 zsb
->z_fuid_obj
= dmu_object_alloc(zsb
->z_os
,
248 DMU_OT_FUID
, 1 << 14, DMU_OT_FUID_SIZE
,
249 sizeof (uint64_t), tx
);
250 VERIFY(zap_add(zsb
->z_os
, MASTER_NODE_OBJ
,
251 ZFS_FUID_TABLES
, sizeof (uint64_t), 1,
252 &zsb
->z_fuid_obj
, tx
) == 0);
255 VERIFY(nvlist_alloc(&nvp
, NV_UNIQUE_NAME
, KM_SLEEP
) == 0);
257 numnodes
= avl_numnodes(&zsb
->z_fuid_idx
);
258 fuids
= kmem_alloc(numnodes
* sizeof (void *), KM_SLEEP
);
259 for (i
= 0, domnode
= avl_first(&zsb
->z_fuid_domain
); domnode
; i
++,
260 domnode
= AVL_NEXT(&zsb
->z_fuid_domain
, domnode
)) {
261 VERIFY(nvlist_alloc(&fuids
[i
], NV_UNIQUE_NAME
, KM_SLEEP
) == 0);
262 VERIFY(nvlist_add_uint64(fuids
[i
], FUID_IDX
,
263 domnode
->f_idx
) == 0);
264 VERIFY(nvlist_add_uint64(fuids
[i
], FUID_OFFSET
, 0) == 0);
265 VERIFY(nvlist_add_string(fuids
[i
], FUID_DOMAIN
,
266 domnode
->f_ksid
->kd_name
) == 0);
268 VERIFY(nvlist_add_nvlist_array(nvp
, FUID_NVP_ARRAY
,
269 fuids
, numnodes
) == 0);
270 for (i
= 0; i
!= numnodes
; i
++)
271 nvlist_free(fuids
[i
]);
272 kmem_free(fuids
, numnodes
* sizeof (void *));
273 VERIFY(nvlist_size(nvp
, &nvsize
, NV_ENCODE_XDR
) == 0);
274 packed
= kmem_alloc(nvsize
, KM_SLEEP
);
275 VERIFY(nvlist_pack(nvp
, &packed
, &nvsize
,
276 NV_ENCODE_XDR
, KM_SLEEP
) == 0);
278 zsb
->z_fuid_size
= nvsize
;
279 dmu_write(zsb
->z_os
, zsb
->z_fuid_obj
, 0, zsb
->z_fuid_size
, packed
, tx
);
280 kmem_free(packed
, zsb
->z_fuid_size
);
281 VERIFY(0 == dmu_bonus_hold(zsb
->z_os
, zsb
->z_fuid_obj
,
283 dmu_buf_will_dirty(db
, tx
);
284 *(uint64_t *)db
->db_data
= zsb
->z_fuid_size
;
285 dmu_buf_rele(db
, FTAG
);
287 zsb
->z_fuid_dirty
= B_FALSE
;
288 rw_exit(&zsb
->z_fuid_lock
);
292 * Query domain table for a given domain.
294 * If domain isn't found and addok is set, it is added to AVL trees and
295 * the zsb->z_fuid_dirty flag will be set to TRUE. It will then be
296 * necessary for the caller or another thread to detect the dirty table
297 * and sync out the changes.
300 zfs_fuid_find_by_domain(zfs_sb_t
*zsb
, const char *domain
,
301 char **retdomain
, boolean_t addok
)
303 fuid_domain_t searchnode
, *findnode
;
305 krw_t rw
= RW_READER
;
308 * If the dummy "nobody" domain then return an index of 0
309 * to cause the created FUID to be a standard POSIX id
310 * for the user nobody.
312 if (domain
[0] == '\0') {
314 *retdomain
= nulldomain
;
318 searchnode
.f_ksid
= ksid_lookupdomain(domain
);
320 *retdomain
= searchnode
.f_ksid
->kd_name
;
321 if (!zsb
->z_fuid_loaded
)
325 rw_enter(&zsb
->z_fuid_lock
, rw
);
326 findnode
= avl_find(&zsb
->z_fuid_domain
, &searchnode
, &loc
);
329 rw_exit(&zsb
->z_fuid_lock
);
330 ksiddomain_rele(searchnode
.f_ksid
);
331 return (findnode
->f_idx
);
333 fuid_domain_t
*domnode
;
336 if (rw
== RW_READER
&& !rw_tryupgrade(&zsb
->z_fuid_lock
)) {
337 rw_exit(&zsb
->z_fuid_lock
);
342 domnode
= kmem_alloc(sizeof (fuid_domain_t
), KM_SLEEP
);
343 domnode
->f_ksid
= searchnode
.f_ksid
;
345 retidx
= domnode
->f_idx
= avl_numnodes(&zsb
->z_fuid_idx
) + 1;
347 avl_add(&zsb
->z_fuid_domain
, domnode
);
348 avl_add(&zsb
->z_fuid_idx
, domnode
);
349 zsb
->z_fuid_dirty
= B_TRUE
;
350 rw_exit(&zsb
->z_fuid_lock
);
353 rw_exit(&zsb
->z_fuid_lock
);
359 * Query domain table by index, returning domain string
361 * Returns a pointer from an avl node of the domain string.
365 zfs_fuid_find_by_idx(zfs_sb_t
*zsb
, uint32_t idx
)
369 if (idx
== 0 || !zsb
->z_use_fuids
)
372 if (!zsb
->z_fuid_loaded
)
375 rw_enter(&zsb
->z_fuid_lock
, RW_READER
);
377 if (zsb
->z_fuid_obj
|| zsb
->z_fuid_dirty
)
378 domain
= zfs_fuid_idx_domain(&zsb
->z_fuid_idx
, idx
);
381 rw_exit(&zsb
->z_fuid_lock
);
388 zfs_fuid_map_ids(znode_t
*zp
, cred_t
*cr
, uid_t
*uidp
, uid_t
*gidp
)
390 *uidp
= zfs_fuid_map_id(ZTOZSB(zp
), zp
->z_uid
, cr
, ZFS_OWNER
);
391 *gidp
= zfs_fuid_map_id(ZTOZSB(zp
), zp
->z_gid
, cr
, ZFS_GROUP
);
395 zfs_fuid_map_id(zfs_sb_t
*zsb
, uint64_t fuid
,
396 cred_t
*cr
, zfs_fuid_type_t type
)
399 uint32_t index
= FUID_INDEX(fuid
);
406 domain
= zfs_fuid_find_by_idx(zsb
, index
);
407 ASSERT(domain
!= NULL
);
409 if (type
== ZFS_OWNER
|| type
== ZFS_ACE_USER
) {
410 (void) kidmap_getuidbysid(crgetzone(cr
), domain
,
411 FUID_RID(fuid
), &id
);
413 (void) kidmap_getgidbysid(crgetzone(cr
), domain
,
414 FUID_RID(fuid
), &id
);
419 * The Linux port only supports POSIX IDs, use the passed id.
422 #endif /* HAVE_KSID */
426 * Add a FUID node to the list of fuid's being created for this
429 * If ACL has multiple domains, then keep only one copy of each unique
433 zfs_fuid_node_add(zfs_fuid_info_t
**fuidpp
, const char *domain
, uint32_t rid
,
434 uint64_t idx
, uint64_t id
, zfs_fuid_type_t type
)
437 zfs_fuid_domain_t
*fuid_domain
;
438 zfs_fuid_info_t
*fuidp
;
440 boolean_t found
= B_FALSE
;
443 *fuidpp
= zfs_fuid_info_alloc();
447 * First find fuid domain index in linked list
449 * If one isn't found then create an entry.
452 for (fuididx
= 1, fuid_domain
= list_head(&fuidp
->z_domains
);
453 fuid_domain
; fuid_domain
= list_next(&fuidp
->z_domains
,
454 fuid_domain
), fuididx
++) {
455 if (idx
== fuid_domain
->z_domidx
) {
462 fuid_domain
= kmem_alloc(sizeof (zfs_fuid_domain_t
), KM_SLEEP
);
463 fuid_domain
->z_domain
= domain
;
464 fuid_domain
->z_domidx
= idx
;
465 list_insert_tail(&fuidp
->z_domains
, fuid_domain
);
466 fuidp
->z_domain_str_sz
+= strlen(domain
) + 1;
467 fuidp
->z_domain_cnt
++;
470 if (type
== ZFS_ACE_USER
|| type
== ZFS_ACE_GROUP
) {
473 * Now allocate fuid entry and add it on the end of the list
476 fuid
= kmem_alloc(sizeof (zfs_fuid_t
), KM_SLEEP
);
478 fuid
->z_domidx
= idx
;
479 fuid
->z_logfuid
= FUID_ENCODE(fuididx
, rid
);
481 list_insert_tail(&fuidp
->z_fuids
, fuid
);
484 if (type
== ZFS_OWNER
)
485 fuidp
->z_fuid_owner
= FUID_ENCODE(fuididx
, rid
);
487 fuidp
->z_fuid_group
= FUID_ENCODE(fuididx
, rid
);
492 * Create a file system FUID, based on information in the users cred
494 * If cred contains KSID_OWNER then it should be used to determine
495 * the uid otherwise cred's uid will be used. By default cred's gid
496 * is used unless it's an ephemeral ID in which case KSID_GROUP will
497 * be used if it exists.
500 zfs_fuid_create_cred(zfs_sb_t
*zsb
, zfs_fuid_type_t type
,
501 cred_t
*cr
, zfs_fuid_info_t
**fuidp
)
511 VERIFY(type
== ZFS_OWNER
|| type
== ZFS_GROUP
);
513 ksid
= crgetsid(cr
, (type
== ZFS_OWNER
) ? KSID_OWNER
: KSID_GROUP
);
515 if (!zsb
->z_use_fuids
|| (ksid
== NULL
)) {
516 id
= (type
== ZFS_OWNER
) ? crgetuid(cr
) : crgetgid(cr
);
518 if (IS_EPHEMERAL(id
))
519 return ((type
== ZFS_OWNER
) ? UID_NOBODY
: GID_NOBODY
);
521 return ((uint64_t)id
);
525 * ksid is present and FUID is supported
527 id
= (type
== ZFS_OWNER
) ? ksid_getid(ksid
) : crgetgid(cr
);
529 if (!IS_EPHEMERAL(id
))
530 return ((uint64_t)id
);
532 if (type
== ZFS_GROUP
)
533 id
= ksid_getid(ksid
);
535 rid
= ksid_getrid(ksid
);
536 domain
= ksid_getdomain(ksid
);
538 idx
= zfs_fuid_find_by_domain(zsb
, domain
, &kdomain
, B_TRUE
);
540 zfs_fuid_node_add(fuidp
, kdomain
, rid
, idx
, id
, type
);
542 return (FUID_ENCODE(idx
, rid
));
544 VERIFY(type
== ZFS_OWNER
|| type
== ZFS_GROUP
);
546 return ((uint64_t)((type
== ZFS_OWNER
) ? crgetuid(cr
) : crgetgid(cr
)));
547 #endif /* HAVE_KSID */
551 * Create a file system FUID for an ACL ace
552 * or a chown/chgrp of the file.
553 * This is similar to zfs_fuid_create_cred, except that
554 * we can't find the domain + rid information in the
555 * cred. Instead we have to query Winchester for the
558 * During replay operations the domain+rid information is
559 * found in the zfs_fuid_info_t that the replay code has
560 * attached to the zsb of the file system.
563 zfs_fuid_create(zfs_sb_t
*zsb
, uint64_t id
, cred_t
*cr
,
564 zfs_fuid_type_t type
, zfs_fuid_info_t
**fuidpp
)
569 uint32_t fuid_idx
= FUID_INDEX(id
);
573 zfs_fuid_t
*zfuid
= NULL
;
574 zfs_fuid_info_t
*fuidp
= NULL
;
577 * If POSIX ID, or entry is already a FUID then
580 * We may also be handed an already FUID'ized id via
584 if (!zsb
->z_use_fuids
|| !IS_EPHEMERAL(id
) || fuid_idx
!= 0)
588 fuidp
= zsb
->z_fuid_replay
;
591 * If we are passed an ephemeral id, but no
592 * fuid_info was logged then return NOBODY.
593 * This is most likely a result of idmap service
594 * not being available.
599 VERIFY3U(type
, >=, ZFS_OWNER
);
600 VERIFY3U(type
, <=, ZFS_ACE_GROUP
);
605 zfuid
= list_head(&fuidp
->z_fuids
);
606 rid
= FUID_RID(zfuid
->z_logfuid
);
607 idx
= FUID_INDEX(zfuid
->z_logfuid
);
610 rid
= FUID_RID(fuidp
->z_fuid_owner
);
611 idx
= FUID_INDEX(fuidp
->z_fuid_owner
);
614 rid
= FUID_RID(fuidp
->z_fuid_group
);
615 idx
= FUID_INDEX(fuidp
->z_fuid_group
);
618 domain
= fuidp
->z_domain_table
[idx
- 1];
620 if (type
== ZFS_OWNER
|| type
== ZFS_ACE_USER
)
621 status
= kidmap_getsidbyuid(crgetzone(cr
), id
,
624 status
= kidmap_getsidbygid(crgetzone(cr
), id
,
629 * When returning nobody we will need to
630 * make a dummy fuid table entry for logging
638 idx
= zfs_fuid_find_by_domain(zsb
, domain
, &kdomain
, B_TRUE
);
641 zfs_fuid_node_add(fuidpp
, kdomain
,
643 else if (zfuid
!= NULL
) {
644 list_remove(&fuidp
->z_fuids
, zfuid
);
645 kmem_free(zfuid
, sizeof (zfs_fuid_t
));
647 return (FUID_ENCODE(idx
, rid
));
650 * The Linux port only supports POSIX IDs, use the passed id.
657 zfs_fuid_destroy(zfs_sb_t
*zsb
)
659 rw_enter(&zsb
->z_fuid_lock
, RW_WRITER
);
660 if (!zsb
->z_fuid_loaded
) {
661 rw_exit(&zsb
->z_fuid_lock
);
664 zfs_fuid_table_destroy(&zsb
->z_fuid_idx
, &zsb
->z_fuid_domain
);
665 rw_exit(&zsb
->z_fuid_lock
);
669 * Allocate zfs_fuid_info for tracking FUIDs created during
670 * zfs_mknode, VOP_SETATTR() or VOP_SETSECATTR()
673 zfs_fuid_info_alloc(void)
675 zfs_fuid_info_t
*fuidp
;
677 fuidp
= kmem_zalloc(sizeof (zfs_fuid_info_t
), KM_SLEEP
);
678 list_create(&fuidp
->z_domains
, sizeof (zfs_fuid_domain_t
),
679 offsetof(zfs_fuid_domain_t
, z_next
));
680 list_create(&fuidp
->z_fuids
, sizeof (zfs_fuid_t
),
681 offsetof(zfs_fuid_t
, z_next
));
686 * Release all memory associated with zfs_fuid_info_t
689 zfs_fuid_info_free(zfs_fuid_info_t
*fuidp
)
692 zfs_fuid_domain_t
*zdomain
;
694 while ((zfuid
= list_head(&fuidp
->z_fuids
)) != NULL
) {
695 list_remove(&fuidp
->z_fuids
, zfuid
);
696 kmem_free(zfuid
, sizeof (zfs_fuid_t
));
699 if (fuidp
->z_domain_table
!= NULL
)
700 kmem_free(fuidp
->z_domain_table
,
701 (sizeof (char **)) * fuidp
->z_domain_cnt
);
703 while ((zdomain
= list_head(&fuidp
->z_domains
)) != NULL
) {
704 list_remove(&fuidp
->z_domains
, zdomain
);
705 kmem_free(zdomain
, sizeof (zfs_fuid_domain_t
));
708 kmem_free(fuidp
, sizeof (zfs_fuid_info_t
));
712 * Check to see if id is a groupmember. If cred
713 * has ksid info then sidlist is checked first
714 * and if still not found then POSIX groups are checked
716 * Will use a straight FUID compare when possible.
719 zfs_groupmember(zfs_sb_t
*zsb
, uint64_t id
, cred_t
*cr
)
722 ksid_t
*ksid
= crgetsid(cr
, KSID_GROUP
);
723 ksidlist_t
*ksidlist
= crgetsidlist(cr
);
726 if (ksid
&& ksidlist
) {
729 uint32_t idx
= FUID_INDEX(id
);
730 uint32_t rid
= FUID_RID(id
);
732 ksid_groups
= ksidlist
->ksl_sids
;
734 for (i
= 0; i
!= ksidlist
->ksl_nsid
; i
++) {
736 if (id
!= IDMAP_WK_CREATOR_GROUP_GID
&&
737 id
== ksid_groups
[i
].ks_id
) {
743 domain
= zfs_fuid_find_by_idx(zsb
, idx
);
744 ASSERT(domain
!= NULL
);
747 IDMAP_WK_CREATOR_SID_AUTHORITY
) == 0)
751 ksid_groups
[i
].ks_domain
->kd_name
) == 0) &&
752 rid
== ksid_groups
[i
].ks_rid
)
759 * Not found in ksidlist, check posix groups
761 gid
= zfs_fuid_map_id(zsb
, id
, cr
, ZFS_GROUP
);
762 return (groupmember(gid
, cr
));
769 zfs_fuid_txhold(zfs_sb_t
*zsb
, dmu_tx_t
*tx
)
771 if (zsb
->z_fuid_obj
== 0) {
772 dmu_tx_hold_bonus(tx
, DMU_NEW_OBJECT
);
773 dmu_tx_hold_write(tx
, DMU_NEW_OBJECT
, 0,
774 FUID_SIZE_ESTIMATE(zsb
));
775 dmu_tx_hold_zap(tx
, MASTER_NODE_OBJ
, FALSE
, NULL
);
777 dmu_tx_hold_bonus(tx
, zsb
->z_fuid_obj
);
778 dmu_tx_hold_write(tx
, zsb
->z_fuid_obj
, 0,
779 FUID_SIZE_ESTIMATE(zsb
));