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