mirror of
https://github.com/kdave/btrfs-progs
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85691ebeac
Allow the specification of the filesystem UUID at mkfs time. Non-unique unique IDs are rejected. This includes attempting to re-mkfs with the same UUID; if you really want to do that, you can mkfs with a new UUID, then re-mkfs with the one you wanted. (Implemented only for mkfs.btrfs, not btrfs-convert). Signed-off-by: Eric Sandeen <sandeen@redhat.com> [converted help to asciidoc] Signed-off-by: David Sterba <dsterba@suse.cz>
107 lines
4.1 KiB
C
107 lines
4.1 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __UTILS__
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#define __UTILS__
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#include <sys/stat.h>
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#include "ctree.h"
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#include <dirent.h>
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#define BTRFS_MKFS_SYSTEM_GROUP_SIZE (4 * 1024 * 1024)
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#define BTRFS_SCAN_PROC (1ULL << 0)
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#define BTRFS_SCAN_DEV (1ULL << 1)
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#define BTRFS_SCAN_MOUNTED (1ULL << 2)
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#define BTRFS_SCAN_LBLKID (1ULL << 3)
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#define BTRFS_UPDATE_KERNEL 1
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#define BTRFS_ARG_UNKNOWN 0
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#define BTRFS_ARG_MNTPOINT 1
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#define BTRFS_ARG_UUID 2
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#define BTRFS_ARG_BLKDEV 3
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#define BTRFS_UUID_UNPARSED_SIZE 37
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int make_btrfs(int fd, const char *device, const char *label,
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char *fs_uuid, u64 blocks[6], u64 num_bytes, u32 nodesize,
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u32 leafsize, u32 sectorsize, u32 stripesize, u64 features);
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int btrfs_make_root_dir(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, u64 objectid);
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int btrfs_prepare_device(int fd, char *file, int zero_end, u64 *block_count_ret,
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u64 max_block_count, int *mixed, int discard);
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int btrfs_add_to_fsid(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, int fd, char *path,
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u64 block_count, u32 io_width, u32 io_align,
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u32 sectorsize);
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int btrfs_scan_for_fsid(int run_ioctls);
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void btrfs_register_one_device(char *fname);
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int btrfs_scan_one_dir(char *dirname, int run_ioctl);
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int check_mounted(const char *devicename);
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int check_mounted_where(int fd, const char *file, char *where, int size,
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struct btrfs_fs_devices **fs_devices_mnt);
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int btrfs_device_already_in_root(struct btrfs_root *root, int fd,
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int super_offset);
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int pretty_size_snprintf(u64 size, char *str, size_t str_bytes);
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#define pretty_size(size) \
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({ \
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static __thread char _str[24]; \
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(void)pretty_size_snprintf((size), _str, sizeof(_str)); \
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_str; \
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})
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int get_mountpt(char *dev, char *mntpt, size_t size);
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int btrfs_scan_block_devices(int run_ioctl);
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u64 parse_size(char *s);
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u64 arg_strtou64(const char *str);
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int open_file_or_dir(const char *fname, DIR **dirstream);
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int open_file_or_dir3(const char *fname, DIR **dirstream, int open_flags);
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void close_file_or_dir(int fd, DIR *dirstream);
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int get_fs_info(char *path, struct btrfs_ioctl_fs_info_args *fi_args,
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struct btrfs_ioctl_dev_info_args **di_ret);
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int get_label(const char *btrfs_dev, char *label);
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int set_label(const char *btrfs_dev, const char *label);
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char *__strncpy__null(char *dest, const char *src, size_t n);
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int is_block_device(const char *file);
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int is_mount_point(const char *file);
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int open_path_or_dev_mnt(const char *path, DIR **dirstream);
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u64 btrfs_device_size(int fd, struct stat *st);
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/* Helper to always get proper size of the destination string */
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#define strncpy_null(dest, src) __strncpy__null(dest, src, sizeof(dest))
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int test_dev_for_mkfs(char *file, int force_overwrite, char *estr);
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int scan_for_btrfs(int where, int update_kernel);
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int get_label_mounted(const char *mount_path, char *labelp);
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int test_num_disk_vs_raid(u64 metadata_profile, u64 data_profile,
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u64 dev_cnt, int mixed, char *estr);
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int is_vol_small(char *file);
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int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
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int verify);
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int ask_user(char *question);
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int lookup_ino_rootid(int fd, u64 *rootid);
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int btrfs_scan_lblkid(int update_kernel);
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int get_btrfs_mount(const char *dev, char *mp, size_t mp_size);
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int find_mount_root(const char *path, char **mount_root);
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int get_device_info(int fd, u64 devid,
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struct btrfs_ioctl_dev_info_args *di_args);
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int test_uuid_unique(char *fs_uuid);
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#endif
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