1/* 2 * GRUB -- GRand Unified Bootloader 3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7/* 8 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 9 * Use is subject to license terms. 10 */ 11 12#ifndef _SYS_DSL_DATASET_H 13#define _SYS_DSL_DATASET_H 14 15typedef struct dsl_dataset_phys { 16 uint64_t ds_dir_obj; 17 uint64_t ds_prev_snap_obj; 18 uint64_t ds_prev_snap_txg; 19 uint64_t ds_next_snap_obj; 20 uint64_t ds_snapnames_zapobj; /* zap obj of snaps; ==0 for snaps */ 21 uint64_t ds_num_children; /* clone/snap children; ==0 for head */ 22 uint64_t ds_creation_time; /* seconds since 1970 */ 23 uint64_t ds_creation_txg; 24 uint64_t ds_deadlist_obj; 25 uint64_t ds_used_bytes; 26 uint64_t ds_compressed_bytes; 27 uint64_t ds_uncompressed_bytes; 28 uint64_t ds_unique_bytes; /* only relevant to snapshots */ 29 /* 30 * The ds_fsid_guid is a 56-bit ID that can change to avoid 31 * collisions. The ds_guid is a 64-bit ID that will never 32 * change, so there is a small probability that it will collide. 33 */ 34 uint64_t ds_fsid_guid; 35 uint64_t ds_guid; 36 uint64_t ds_flags; 37 blkptr_t ds_bp; 38 uint64_t ds_pad[8]; /* pad out to 320 bytes for good measure */ 39} dsl_dataset_phys_t; 40 41#endif /* _SYS_DSL_DATASET_H */ 42