src/basic/btrfs-ctree.h

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