btrfs-progs/common/utils.h
David Sterba 922eaa7b54 btrfs-progs: build: fix linking with static libmount
The libmount dependency has been added in commit 61ecaff036
("btrfs-progs: build: add libmount dependency"), and static build got
broken. There are functions that do basically the same thing and also
share the name, which in turn fails at link time.

  ld: /../lib64/libmount.a(libcommon_la-canonicalize.o): in function `canonicalize_dm_name':
  util-linux-2.34/lib/canonicalize.c:58: multiple definition of `canonicalize_dm_name';
	  common/path-utils.static.o:btrfs-progs/common/path-utils.c:286: first defined here

In case the collision can be resolved by renaming, it's done
(canonicalize_path and parse_size). There are 2 symbols from selinux
that are substituted by a weak aliases during the static build.

There's one new warning due to use of getgrnam_r in libmount that
depends on dynamic linking and may not work properly with static build.
We're not using the related functions directly or indirectly, so it
should be safe to ignore the warnings.

  ld: ../lib64/libmount.a(la-utils.o): in function `mnt_get_gid':
  util-linux-2.34/libmount/src/utils.c:625: warning: Using 'getgrnam_r' in statically linked applications
  +requires at runtime the shared libraries from the glibc version used for linking

Issue: #333
Signed-off-by: David Sterba <dsterba@suse.com>
2021-01-25 23:31:56 +01:00

175 lines
5.9 KiB
C

/*
* 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 <sys/stat.h>
#include "kernel-shared/ctree.h"
#include <dirent.h>
#include <stdarg.h>
#include "common/defs.h"
#include "common/internal.h"
#include "btrfs-list.h"
#include "kernel-lib/sizes.h"
#include "common/messages.h"
#include "ioctl.h"
#include "common/fsfeatures.h"
/*
* 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)
enum exclusive_operation {
BTRFS_EXCLOP_NONE,
BTRFS_EXCLOP_BALANCE,
BTRFS_EXCLOP_DEV_ADD,
BTRFS_EXCLOP_DEV_REMOVE,
BTRFS_EXCLOP_DEV_REPLACE,
BTRFS_EXCLOP_RESIZE,
BTRFS_EXCLOP_SWAP_ACTIVATE,
BTRFS_EXCLOP_UNKNOWN = -1,
};
void units_set_mode(unsigned *units, unsigned mode);
void units_set_base(unsigned *units, unsigned base);
int btrfs_make_root_dir(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 objectid);
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, unsigned sbflags);
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);
enum btrfs_csum_type parse_csum_type(const char *s);
u64 parse_size_from_string(const char *s);
u64 parse_qgroupid(const char *p);
u64 arg_strtou64(const char *str);
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 get_fsid_fd(int fd, u8 *fsid);
int get_fs_exclop(int fd);
int check_running_fs_exclop(int fd, enum exclusive_operation start, bool enqueue);
const char *get_fs_exclop_name(int op);
int get_label(const char *btrfs_dev, char *label);
int set_label(const char *btrfs_dev, const char *label);
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);
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 get_btrfs_mount(const char *dev, char *mp, size_t mp_size);
int find_mount_fsroot(const char *subvol, const char *subvolid, char **mount);
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 get_df(int fd, struct btrfs_ioctl_space_args **sargs_ret);
int test_uuid_unique(char *fs_uuid);
const char *subvol_strip_mountpoint(const char *mnt, const char *full_path);
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);
#define BTRFS_BCONF_UNSET -1
#define BTRFS_BCONF_QUIET 0
/*
* Global program state, configurable by command line and available to
* functions without extra context passing.
*/
struct btrfs_config {
unsigned int output_format;
/*
* Values:
* BTRFS_BCONF_QUIET
* BTRFS_BCONF_UNSET
* > 0: verbose level
*/
int verbose;
};
extern struct btrfs_config bconf;
void btrfs_config_init(void);
void bconf_be_verbose(void);
void bconf_be_quiet(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);
char *btrfs_test_for_multiple_profiles(int fd);
int btrfs_warn_multiple_profiles(int fd);
int sysfs_open_fsid_file(int fd, const char *filename);
int sysfs_read_file(int fd, char *buf, size_t size);
#endif