include/zfs/dsl_dataset.h

   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
  15 typedef 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 */