src/shared/btrfs-ctree.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 #pragma once
   4
   5 #include "macro.h"
   6 #include "sparse-endian.h"
   7
   8 /* Stolen from btrfs' ctree.h */
   9
  10 struct btrfs_timespec {
  11         le64_t sec;
  12         le32_t nsec;
  13 } _packed_;
  14
  15 struct btrfs_disk_key {
  16         le64_t objectid;
  17         uint8_t type;
  18         le64_t offset;
  19 } _packed_;
  20
  21 struct btrfs_inode_item {
  22         le64_t generation;
  23         le64_t transid;
  24         le64_t size;
  25         le64_t nbytes;
  26         le64_t block_group;
  27         le32_t nlink;
  28         le32_t uid;
  29         le32_t gid;
  30         le32_t mode;
  31         le64_t rdev;
  32         le64_t flags;
  33         le64_t sequence;
  34         le64_t reserved[4];
  35         struct btrfs_timespec atime;
  36         struct btrfs_timespec ctime;
  37         struct btrfs_timespec mtime;
  38         struct btrfs_timespec otime;
  39 } _packed_;
  40
  41 struct btrfs_root_item {
  42         struct btrfs_inode_item inode;
  43         le64_t generation;
  44         le64_t root_dirid;
  45         le64_t bytenr;
  46         le64_t byte_limit;
  47         le64_t bytes_used;
  48         le64_t last_snapshot;
  49         le64_t flags;
  50         le32_t refs;
  51         struct btrfs_disk_key drop_progress;
  52         uint8_t drop_level;
  53         uint8_t level;
  54         le64_t generation_v2;
  55         uint8_t uuid[BTRFS_UUID_SIZE];
  56         uint8_t parent_uuid[BTRFS_UUID_SIZE];
  57         uint8_t received_uuid[BTRFS_UUID_SIZE];
  58         le64_t ctransid;
  59         le64_t otransid;
  60         le64_t stransid;
  61         le64_t rtransid;
  62         struct btrfs_timespec ctime;
  63         struct btrfs_timespec otime;
  64         struct btrfs_timespec stime;
  65         struct btrfs_timespec rtime;
  66         le64_t reserved[8];
  67 } _packed_;
  68
  69 #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0)
  70
  71 struct btrfs_qgroup_info_item {
  72         le64_t generation;
  73         le64_t rfer;
  74         le64_t rfer_cmpr;
  75         le64_t excl;
  76         le64_t excl_cmpr;
  77 } _packed_;
  78
  79 #define BTRFS_QGROUP_LIMIT_MAX_RFER     (1ULL << 0)
  80 #define BTRFS_QGROUP_LIMIT_MAX_EXCL     (1ULL << 1)
  81 #define BTRFS_QGROUP_LIMIT_RSV_RFER     (1ULL << 2)
  82 #define BTRFS_QGROUP_LIMIT_RSV_EXCL     (1ULL << 3)
  83 #define BTRFS_QGROUP_LIMIT_RFER_CMPR    (1ULL << 4)
  84 #define BTRFS_QGROUP_LIMIT_EXCL_CMPR    (1ULL << 5)
  85
  86 struct btrfs_qgroup_limit_item {
  87         le64_t flags;
  88         le64_t max_rfer;
  89         le64_t max_excl;
  90         le64_t rsv_rfer;
  91         le64_t rsv_excl;
  92 } _packed_;
  93
  94 struct btrfs_root_ref {
  95         le64_t dirid;
  96         le64_t sequence;
  97         le16_t name_len;
  98 } _packed_;