lvm2/device_mapper/libdm-common.h

/*
 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
 * Copyright (C) 2004-2012 Red Hat, Inc. All rights reserved.
 *
 * This file is part of the device-mapper userspace tools.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU Lesser General Public License v.2.1.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef LIB_DMCOMMON_H
#define LIB_DMCOMMON_H

#include "device_mapper/all.h"

#define DM_DEFAULT_NAME_MANGLING_MODE_ENV_VAR_NAME "DM_DEFAULT_NAME_MANGLING_MODE"

#define DEV_NAME(dmt) (dmt->mangled_dev_name ? : dmt->dev_name)
#define DEV_UUID(DMT) (dmt->mangled_uuid ? : dmt->uuid)

int mangle_string(const char *str, const char *str_name, size_t len,
		  char *buf, size_t buf_len, dm_string_mangling_t mode);

int unmangle_string(const char *str, const char *str_name, size_t len,
		    char *buf, size_t buf_len, dm_string_mangling_t mode);

int check_multiple_mangled_string_allowed(const char *str, const char *str_name,
					  dm_string_mangling_t mode);

struct target *create_target(uint64_t start,
			     uint64_t len,
			     const char *type, const char *params);

int add_dev_node(const char *dev_name, uint32_t minor, uint32_t major,
		 uid_t uid, gid_t gid, mode_t mode, int check_udev, unsigned rely_on_udev);
int rm_dev_node(const char *dev_name, int check_udev, unsigned rely_on_udev);
int rename_dev_node(const char *old_name, const char *new_name,
		    int check_udev, unsigned rely_on_udev);
int get_dev_node_read_ahead(const char *dev_name, uint32_t major, uint32_t minor,
			    uint32_t *read_ahead);
int set_dev_node_read_ahead(const char *dev_name, uint32_t major, uint32_t minor,
			    uint32_t read_ahead, uint32_t read_ahead_flags);
void update_devs(void);
void selinux_release(void);

void inc_suspended(void);
void dec_suspended(void);

int parse_thin_pool_status(const char *params, struct dm_status_thin_pool *s);

int get_uname_version(unsigned *major, unsigned *minor, unsigned *release);

#endif