2 * GRUB -- GRand Unified Bootloader
3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
21 * Use is subject to license terms.
24 #ifndef _SYS_DSL_DATASET_H
25 #define _SYS_DSL_DATASET_H
27 typedef struct dsl_dataset_phys {
29 uint64_t ds_prev_snap_obj;
30 uint64_t ds_prev_snap_txg;
31 uint64_t ds_next_snap_obj;
32 uint64_t ds_snapnames_zapobj; /* zap obj of snaps; ==0 for snaps */
33 uint64_t ds_num_children; /* clone/snap children; ==0 for head */
34 uint64_t ds_creation_time; /* seconds since 1970 */
35 uint64_t ds_creation_txg;
36 uint64_t ds_deadlist_obj;
37 uint64_t ds_used_bytes;
38 uint64_t ds_compressed_bytes;
39 uint64_t ds_uncompressed_bytes;
40 uint64_t ds_unique_bytes; /* only relevant to snapshots */
42 * The ds_fsid_guid is a 56-bit ID that can change to avoid
43 * collisions. The ds_guid is a 64-bit ID that will never
44 * change, so there is a small probability that it will collide.
46 uint64_t ds_fsid_guid;
50 uint64_t ds_pad[8]; /* pad out to 320 bytes for good measure */
53 #endif /* _SYS_DSL_DATASET_H */