mirror of
https://github.com/kdave/btrfs-progs
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e7e89d93c2
Extend check_mounted_where so we can pass additional flags that would allow us to open filesystem in some specific state. This will be used for a filesystem that has a partially changed uuid. Signed-off-by: David Sterba <dsterba@suse.com>
193 lines
6.6 KiB
C
193 lines
6.6 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 __BTRFS_UTILS_H__
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#define __BTRFS_UTILS_H__
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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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#include <stdarg.h>
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#include "common-defs.h"
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#include "internal.h"
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#include "btrfs-list.h"
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#include "sizes.h"
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#include "messages.h"
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#include "ioctl.h"
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#define BTRFS_SCAN_MOUNTED (1ULL << 0)
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#define BTRFS_SCAN_LBLKID (1ULL << 1)
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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_ARG_REG 4
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/*
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* Output modes of size
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*/
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#define UNITS_RESERVED (0)
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#define UNITS_BYTES (1)
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#define UNITS_KBYTES (2)
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#define UNITS_MBYTES (3)
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#define UNITS_GBYTES (4)
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#define UNITS_TBYTES (5)
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#define UNITS_RAW (1U << UNITS_MODE_SHIFT)
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#define UNITS_BINARY (2U << UNITS_MODE_SHIFT)
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#define UNITS_DECIMAL (3U << UNITS_MODE_SHIFT)
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/* Interpret the u64 value as s64 */
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#define UNITS_NEGATIVE (4U << UNITS_MODE_SHIFT)
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#define UNITS_MODE_MASK ((1U << UNITS_MODE_SHIFT) - 1)
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#define UNITS_MODE_SHIFT (8)
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#define UNITS_HUMAN_BINARY (UNITS_BINARY)
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#define UNITS_HUMAN_DECIMAL (UNITS_DECIMAL)
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#define UNITS_HUMAN (UNITS_HUMAN_BINARY)
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#define UNITS_DEFAULT (UNITS_HUMAN)
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void units_set_mode(unsigned *units, unsigned mode);
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void units_set_base(unsigned *units, unsigned base);
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#define PREP_DEVICE_ZERO_END (1U << 0)
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#define PREP_DEVICE_DISCARD (1U << 1)
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#define PREP_DEVICE_VERBOSE (1U << 2)
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#define SEEN_FSID_HASH_SIZE 256
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struct seen_fsid {
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u8 fsid[BTRFS_FSID_SIZE];
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struct seen_fsid *next;
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DIR *dirstream;
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int fd;
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};
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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, const char *file, u64 *block_count_ret,
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u64 max_block_count, unsigned opflags);
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int btrfs_add_to_fsid(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, int fd, const 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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int btrfs_register_one_device(const char *fname);
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int btrfs_register_all_devices(void);
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char *canonicalize_dm_name(const char *ptname);
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char *canonicalize_path(const char *path);
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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, unsigned sbflags);
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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, unsigned unit_mode);
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#define pretty_size(size) pretty_size_mode(size, UNITS_DEFAULT)
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const char *pretty_size_mode(u64 size, unsigned mode);
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u64 parse_size(char *s);
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u64 parse_qgroupid(const char *p);
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u64 arg_strtou64(const char *str);
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int arg_copy_path(char *dest, const char *src, int destlen);
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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(const 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_fsid(const char *path, u8 *fsid, int silent);
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int is_seen_fsid(u8 *fsid, struct seen_fsid *seen_fsid_hash[]);
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int add_seen_fsid(u8 *fsid, struct seen_fsid *seen_fsid_hash[],
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int fd, DIR *dirstream);
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void free_seen_fsid(struct seen_fsid *seen_fsid_hash[]);
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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 is_path_exist(const char *file);
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int is_reg_file(const char *path);
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int check_arg_type(const char *input);
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int open_path_or_dev_mnt(const char *path, DIR **dirstream, int verbose);
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int btrfs_open(const char *path, DIR **dirstream, int verbose, int dir_only);
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int btrfs_open_dir(const char *path, DIR **dirstream, int verbose);
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int btrfs_open_file_or_dir(const char *path, DIR **dirstream, int verbose);
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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 get_label_mounted(const char *mount_path, char *labelp);
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int get_label_unmounted(const char *dev, char *label);
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int group_profile_max_safe_loss(u64 flags);
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int csum_tree_block(struct btrfs_fs_info *root, struct extent_buffer *buf,
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int verify);
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int ask_user(const char *question);
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int lookup_path_rootid(int fd, u64 *rootid);
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int btrfs_scan_devices(void);
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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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u64 disk_size(const char *path);
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u64 get_partition_size(const char *dev);
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int test_issubvolname(const char *name);
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int test_isdir(const char *path);
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const char *subvol_strip_mountpoint(const char *mnt, const char *full_path);
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int find_next_key(struct btrfs_path *path, struct btrfs_key *key);
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const char* btrfs_group_type_str(u64 flag);
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const char* btrfs_group_profile_str(u64 flag);
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int count_digits(u64 num);
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u64 div_factor(u64 num, int factor);
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int btrfs_tree_search2_ioctl_supported(int fd);
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unsigned int get_unit_mode_from_arg(int *argc, char *argv[], int df_mode);
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int string_is_numerical(const char *str);
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int prefixcmp(const char *str, const char *prefix);
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unsigned long total_memory(void);
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void print_device_info(struct btrfs_device *device, char *prefix);
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void print_all_devices(struct list_head *devices);
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/*
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* Global program state, configurable by command line and available to
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* functions without extra context passing.
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*/
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struct btrfs_config {
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};
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extern struct btrfs_config bconf;
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void btrfs_config_init(void);
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/* Pseudo random number generator wrappers */
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int rand_int(void);
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u8 rand_u8(void);
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u16 rand_u16(void);
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u32 rand_u32(void);
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u64 rand_u64(void);
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unsigned int rand_range(unsigned int upper);
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void init_rand_seed(u64 seed);
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#endif
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