/* * Copyright (C) 2007 Oracle. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License v2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #ifndef __BTRFS_UTILS_H__ #define __BTRFS_UTILS_H__ #include #include "ctree.h" #include #include #include "common-defs.h" #include "internal.h" #include "btrfs-list.h" #include "sizes.h" #include "messages.h" #include "ioctl.h" #define BTRFS_SCAN_MOUNTED (1ULL << 0) #define BTRFS_SCAN_LBLKID (1ULL << 1) #define BTRFS_UPDATE_KERNEL 1 #define BTRFS_ARG_UNKNOWN 0 #define BTRFS_ARG_MNTPOINT 1 #define BTRFS_ARG_UUID 2 #define BTRFS_ARG_BLKDEV 3 #define BTRFS_ARG_REG 4 /* * Output modes of size */ #define UNITS_RESERVED (0) #define UNITS_BYTES (1) #define UNITS_KBYTES (2) #define UNITS_MBYTES (3) #define UNITS_GBYTES (4) #define UNITS_TBYTES (5) #define UNITS_RAW (1U << UNITS_MODE_SHIFT) #define UNITS_BINARY (2U << UNITS_MODE_SHIFT) #define UNITS_DECIMAL (3U << UNITS_MODE_SHIFT) /* Interpret the u64 value as s64 */ #define UNITS_NEGATIVE (4U << UNITS_MODE_SHIFT) #define UNITS_MODE_MASK ((1U << UNITS_MODE_SHIFT) - 1) #define UNITS_MODE_SHIFT (8) #define UNITS_HUMAN_BINARY (UNITS_BINARY) #define UNITS_HUMAN_DECIMAL (UNITS_DECIMAL) #define UNITS_HUMAN (UNITS_HUMAN_BINARY) #define UNITS_DEFAULT (UNITS_HUMAN) void units_set_mode(unsigned *units, unsigned mode); void units_set_base(unsigned *units, unsigned base); #define PREP_DEVICE_ZERO_END (1U << 0) #define PREP_DEVICE_DISCARD (1U << 1) #define PREP_DEVICE_VERBOSE (1U << 2) #define SEEN_FSID_HASH_SIZE 256 struct seen_fsid { u8 fsid[BTRFS_FSID_SIZE]; struct seen_fsid *next; DIR *dirstream; int fd; }; int btrfs_make_root_dir(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 objectid); int btrfs_prepare_device(int fd, const char *file, u64 *block_count_ret, u64 max_block_count, unsigned opflags); int btrfs_add_to_fsid(struct btrfs_trans_handle *trans, struct btrfs_root *root, int fd, const char *path, u64 block_count, u32 io_width, u32 io_align, u32 sectorsize); int btrfs_scan_for_fsid(int run_ioctls); int btrfs_register_one_device(const char *fname); int btrfs_register_all_devices(void); char *canonicalize_dm_name(const char *ptname); char *canonicalize_path(const char *path); int check_mounted(const char *devicename); int check_mounted_where(int fd, const char *file, char *where, int size, struct btrfs_fs_devices **fs_devices_mnt); int btrfs_device_already_in_root(struct btrfs_root *root, int fd, int super_offset); int pretty_size_snprintf(u64 size, char *str, size_t str_bytes, unsigned unit_mode); #define pretty_size(size) pretty_size_mode(size, UNITS_DEFAULT) const char *pretty_size_mode(u64 size, unsigned mode); u64 parse_size(char *s); u64 parse_qgroupid(const char *p); u64 arg_strtou64(const char *str); int arg_copy_path(char *dest, const char *src, int destlen); int open_file_or_dir(const char *fname, DIR **dirstream); int open_file_or_dir3(const char *fname, DIR **dirstream, int open_flags); void close_file_or_dir(int fd, DIR *dirstream); int get_fs_info(const char *path, struct btrfs_ioctl_fs_info_args *fi_args, struct btrfs_ioctl_dev_info_args **di_ret); int get_fsid(const char *path, u8 *fsid, int silent); int is_seen_fsid(u8 *fsid, struct seen_fsid *seen_fsid_hash[]); int add_seen_fsid(u8 *fsid, struct seen_fsid *seen_fsid_hash[], int fd, DIR *dirstream); void free_seen_fsid(struct seen_fsid *seen_fsid_hash[]); int get_label(const char *btrfs_dev, char *label); int set_label(const char *btrfs_dev, const char *label); char *__strncpy_null(char *dest, const char *src, size_t n); int is_block_device(const char *file); int is_mount_point(const char *file); int is_path_exist(const char *file); int is_reg_file(const char *path); int check_arg_type(const char *input); int open_path_or_dev_mnt(const char *path, DIR **dirstream, int verbose); int btrfs_open(const char *path, DIR **dirstream, int verbose, int dir_only); int btrfs_open_dir(const char *path, DIR **dirstream, int verbose); int btrfs_open_file_or_dir(const char *path, DIR **dirstream, int verbose); u64 btrfs_device_size(int fd, struct stat *st); /* Helper to always get proper size of the destination string */ #define strncpy_null(dest, src) __strncpy_null(dest, src, sizeof(dest)) int get_label_mounted(const char *mount_path, char *labelp); int get_label_unmounted(const char *dev, char *label); int group_profile_max_safe_loss(u64 flags); int csum_tree_block(struct btrfs_fs_info *root, struct extent_buffer *buf, int verify); int ask_user(const char *question); int lookup_path_rootid(int fd, u64 *rootid); int btrfs_scan_devices(void); int get_btrfs_mount(const char *dev, char *mp, size_t mp_size); int find_mount_root(const char *path, char **mount_root); int get_device_info(int fd, u64 devid, struct btrfs_ioctl_dev_info_args *di_args); int test_uuid_unique(char *fs_uuid); u64 disk_size(const char *path); u64 get_partition_size(const char *dev); int test_issubvolname(const char *name); int test_issubvolume(const char *path); int test_isdir(const char *path); const char *subvol_strip_mountpoint(const char *mnt, const char *full_path); int get_subvol_info(const char *fullpath, struct root_info *get_ri); int get_subvol_info_by_rootid(const char *mnt, struct root_info *get_ri, u64 rootid_arg); int get_subvol_info_by_uuid(const char *mnt, struct root_info *get_ri, u8 *uuid_arg); int find_next_key(struct btrfs_path *path, struct btrfs_key *key); const char* btrfs_group_type_str(u64 flag); const char* btrfs_group_profile_str(u64 flag); int count_digits(u64 num); u64 div_factor(u64 num, int factor); int btrfs_tree_search2_ioctl_supported(int fd); unsigned int get_unit_mode_from_arg(int *argc, char *argv[], int df_mode); int string_is_numerical(const char *str); int prefixcmp(const char *str, const char *prefix); unsigned long total_memory(void); void print_device_info(struct btrfs_device *device, char *prefix); void print_all_devices(struct list_head *devices); /* * Global program state, configurable by command line and available to * functions without extra context passing. */ struct btrfs_config { }; extern struct btrfs_config bconf; void btrfs_config_init(void); /* Pseudo random number generator wrappers */ int rand_int(void); u8 rand_u8(void); u16 rand_u16(void); u32 rand_u32(void); u64 rand_u64(void); unsigned int rand_range(unsigned int upper); void init_rand_seed(u64 seed); #endif