src/basic/missing_btrfs_tree.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include <linux/types.h>
   5
   6 #include "missing_btrfs.h"
   7
   8 /* linux@db6711600e27c885aed89751f04e727f3af26715 (4.7) */
   9 #if HAVE_LINUX_BTRFS_TREE_H
  10 #include <linux/btrfs_tree.h>
  11 #else
  12 #define BTRFS_ROOT_TREE_OBJECTID  1
  13 #define BTRFS_QUOTA_TREE_OBJECTID 8
  14 #define BTRFS_FIRST_FREE_OBJECTID 256
  15 #define BTRFS_LAST_FREE_OBJECTID -256ULL
  16
  17 #define BTRFS_ROOT_ITEM_KEY       132
  18 #define BTRFS_ROOT_BACKREF_KEY    144
  19 #define BTRFS_QGROUP_STATUS_KEY   240
  20 #define BTRFS_QGROUP_INFO_KEY     242
  21 #define BTRFS_QGROUP_LIMIT_KEY    244
  22 #define BTRFS_QGROUP_RELATION_KEY 246
  23
  24 struct btrfs_disk_key {
  25         __le64 objectid;
  26         __u8 type;
  27         __le64 offset;
  28 } __attribute__ ((__packed__));
  29
  30 struct btrfs_timespec {
  31         __le64 sec;
  32         __le32 nsec;
  33 } __attribute__ ((__packed__));
  34
  35 struct btrfs_inode_item {
  36         __le64 generation;
  37         __le64 transid;
  38         __le64 size;
  39         __le64 nbytes;
  40         __le64 block_group;
  41         __le32 nlink;
  42         __le32 uid;
  43         __le32 gid;
  44         __le32 mode;
  45         __le64 rdev;
  46         __le64 flags;
  47         __le64 sequence;
  48         __le64 reserved[4];
  49         struct btrfs_timespec atime;
  50         struct btrfs_timespec ctime;
  51         struct btrfs_timespec mtime;
  52         struct btrfs_timespec otime;
  53 } __attribute__ ((__packed__));
  54
  55 #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0)
  56
  57 struct btrfs_root_item {
  58         struct btrfs_inode_item inode;
  59         __le64 generation;
  60         __le64 root_dirid;
  61         __le64 bytenr;
  62         __le64 byte_limit;
  63         __le64 bytes_used;
  64         __le64 last_snapshot;
  65         __le64 flags;
  66         __le32 refs;
  67         struct btrfs_disk_key drop_progress;
  68         __u8 drop_level;
  69         __u8 level;
  70
  71         __le64 generation_v2;
  72         __u8 uuid[BTRFS_UUID_SIZE];
  73         __u8 parent_uuid[BTRFS_UUID_SIZE];
  74         __u8 received_uuid[BTRFS_UUID_SIZE];
  75         __le64 ctransid; /* updated when an inode changes */
  76         __le64 otransid; /* trans when created */
  77         __le64 stransid; /* trans when sent. non-zero for received subvol */
  78         __le64 rtransid; /* trans when received. non-zero for received subvol */
  79         struct btrfs_timespec ctime;
  80         struct btrfs_timespec otime;
  81         struct btrfs_timespec stime;
  82         struct btrfs_timespec rtime;
  83         __le64 reserved[8]; /* for future */
  84 } __attribute__ ((__packed__));
  85
  86 struct btrfs_root_ref {
  87         __le64 dirid;
  88         __le64 sequence;
  89         __le16 name_len;
  90 } __attribute__ ((__packed__));
  91
  92 #define BTRFS_QGROUP_LEVEL_SHIFT  48
  93
  94 struct btrfs_qgroup_info_item {
  95         __le64 generation;
  96         __le64 rfer;
  97         __le64 rfer_cmpr;
  98         __le64 excl;
  99         __le64 excl_cmpr;
 100 } __attribute__ ((__packed__));
 101
 102 struct btrfs_qgroup_limit_item {
 103         __le64 flags;
 104         __le64 max_rfer;
 105         __le64 max_excl;
 106         __le64 rsv_rfer;
 107         __le64 rsv_excl;
 108 } __attribute__ ((__packed__));
 109 #endif