2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
26 #define BTRFS_MKFS_SYSTEM_GROUP_SIZE (4 * 1024 * 1024)
27 #define BTRFS_MKFS_SMALL_VOLUME_SIZE (1024 * 1024 * 1024)
29 #define BTRFS_SCAN_MOUNTED (1ULL << 0)
30 #define BTRFS_SCAN_LBLKID (1ULL << 1)
32 #define BTRFS_UPDATE_KERNEL 1
34 #define BTRFS_ARG_UNKNOWN 0
35 #define BTRFS_ARG_MNTPOINT 1
36 #define BTRFS_ARG_UUID 2
37 #define BTRFS_ARG_BLKDEV 3
39 #define BTRFS_UUID_UNPARSED_SIZE 37
41 #define ARGV0_BUF_SIZE 64
43 int check_argc_exact(int nargs
, int expected
);
44 int check_argc_min(int nargs
, int expected
);
45 int check_argc_max(int nargs
, int expected
);
47 void fixup_argv0(char **argv
, const char *token
);
48 void set_argv0(char **argv
);
51 * Output modes of size
53 #define UNITS_RESERVED (0)
54 #define UNITS_BYTES (1)
55 #define UNITS_KBYTES (2)
56 #define UNITS_MBYTES (3)
57 #define UNITS_GBYTES (4)
58 #define UNITS_TBYTES (5)
59 #define UNITS_RAW (1U << UNITS_MODE_SHIFT)
60 #define UNITS_BINARY (2U << UNITS_MODE_SHIFT)
61 #define UNITS_DECIMAL (3U << UNITS_MODE_SHIFT)
62 #define UNITS_MODE_MASK ((1U << UNITS_MODE_SHIFT) - 1)
63 #define UNITS_MODE_SHIFT (8)
64 #define UNITS_HUMAN_BINARY (UNITS_BINARY)
65 #define UNITS_HUMAN_DECIMAL (UNITS_DECIMAL)
66 #define UNITS_HUMAN (UNITS_HUMAN_BINARY)
67 #define UNITS_DEFAULT (UNITS_HUMAN)
69 void units_set_mode(unsigned *units
, unsigned mode
);
70 void units_set_base(unsigned *units
, unsigned base
);
72 int make_btrfs(int fd
, const char *device
, const char *label
,
73 char *fs_uuid
, u64 blocks
[6], u64 num_bytes
, u32 nodesize
,
74 u32 leafsize
, u32 sectorsize
, u32 stripesize
, u64 features
);
75 int btrfs_make_root_dir(struct btrfs_trans_handle
*trans
,
76 struct btrfs_root
*root
, u64 objectid
);
77 int btrfs_prepare_device(int fd
, char *file
, int zero_end
, u64
*block_count_ret
,
78 u64 max_block_count
, int *mixed
, int discard
);
79 int btrfs_add_to_fsid(struct btrfs_trans_handle
*trans
,
80 struct btrfs_root
*root
, int fd
, char *path
,
81 u64 block_count
, u32 io_width
, u32 io_align
,
83 int btrfs_scan_for_fsid(int run_ioctls
);
84 int btrfs_register_one_device(const char *fname
);
85 char *canonicalize_dm_name(const char *ptname
);
86 char *canonicalize_path(const char *path
);
87 int check_mounted(const char *devicename
);
88 int check_mounted_where(int fd
, const char *file
, char *where
, int size
,
89 struct btrfs_fs_devices
**fs_devices_mnt
);
90 int btrfs_device_already_in_root(struct btrfs_root
*root
, int fd
,
93 int pretty_size_snprintf(u64 size
, char *str
, size_t str_bytes
, unsigned unit_mode
);
94 #define pretty_size(size) pretty_size_mode(size, UNITS_DEFAULT)
95 #define pretty_size_mode(size, mode) \
97 static __thread char _str[32]; \
98 (void)pretty_size_snprintf((size), _str, sizeof(_str), (mode)); \
102 int get_mountpt(char *dev
, char *mntpt
, size_t size
);
103 int btrfs_scan_block_devices(int run_ioctl
);
104 u64
parse_size(char *s
);
105 u64
arg_strtou64(const char *str
);
106 int open_file_or_dir(const char *fname
, DIR **dirstream
);
107 int open_file_or_dir3(const char *fname
, DIR **dirstream
, int open_flags
);
108 void close_file_or_dir(int fd
, DIR *dirstream
);
109 int get_fs_info(char *path
, struct btrfs_ioctl_fs_info_args
*fi_args
,
110 struct btrfs_ioctl_dev_info_args
**di_ret
);
111 int get_label(const char *btrfs_dev
, char *label
);
112 int set_label(const char *btrfs_dev
, const char *label
);
114 char *__strncpy__null(char *dest
, const char *src
, size_t n
);
115 int is_block_device(const char *file
);
116 int is_mount_point(const char *file
);
117 int open_path_or_dev_mnt(const char *path
, DIR **dirstream
);
118 u64
btrfs_device_size(int fd
, struct stat
*st
);
119 /* Helper to always get proper size of the destination string */
120 #define strncpy_null(dest, src) __strncpy__null(dest, src, sizeof(dest))
121 int test_dev_for_mkfs(char *file
, int force_overwrite
, char *estr
);
122 int get_label_mounted(const char *mount_path
, char *labelp
);
123 int test_num_disk_vs_raid(u64 metadata_profile
, u64 data_profile
,
124 u64 dev_cnt
, int mixed
, char *estr
);
125 int is_vol_small(char *file
);
126 int csum_tree_block(struct btrfs_root
*root
, struct extent_buffer
*buf
,
128 int ask_user(char *question
);
129 int lookup_ino_rootid(int fd
, u64
*rootid
);
130 int btrfs_scan_lblkid(int update_kernel
);
131 int get_btrfs_mount(const char *dev
, char *mp
, size_t mp_size
);
132 int find_mount_root(const char *path
, char **mount_root
);
133 int get_device_info(int fd
, u64 devid
,
134 struct btrfs_ioctl_dev_info_args
*di_args
);
135 int test_uuid_unique(char *fs_uuid
);
137 int test_minimum_size(const char *file
, u32 leafsize
);
138 int test_issubvolname(const char *name
);
139 int test_isdir(const char *path
);
142 * Btrfs minimum size calculation is complicated, it should include at least:
143 * 1. system group size
144 * 2. minimum global block reserve
145 * 3. metadata used at mkfs
146 * 4. space reservation to create uuid for first mount.
147 * Also, raid factor should also be taken into consideration.
148 * To avoid the overkill calculation, (system group + global block rsv) * 2
149 * for *EACH* device should be good enough.
151 static inline u64
btrfs_min_global_blk_rsv_size(u32 leafsize
)
153 return leafsize
<< 10;
155 static inline u64
btrfs_min_dev_size(u32 leafsize
)
157 return 2 * (BTRFS_MKFS_SYSTEM_GROUP_SIZE
+
158 btrfs_min_global_blk_rsv_size(leafsize
));
161 int find_next_key(struct btrfs_path
*path
, struct btrfs_key
*key
);