[thirdparty/systemd.git] / src / basic / blockdev-util.h

/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once

#include <sys/types.h>

#include "macro.h"
#include "stdio-util.h"
#include "string-util.h"

#define SYS_BLOCK_PATH_MAX(suffix)                                      \
        (STRLEN("/sys/dev/block/") + DECIMAL_STR_MAX(dev_t) + 1 + DECIMAL_STR_MAX(dev_t) + strlen_ptr(suffix))
#define xsprintf_sys_block_path(buf, suffix, devno)                     \
        xsprintf(buf, "/sys/dev/block/%u:%u%s", major(devno), minor(devno), strempty(suffix))

int block_get_whole_disk(dev_t d, dev_t *ret);
int block_get_originating(dev_t d, dev_t *ret);

int get_block_device(const char *path, dev_t *dev);

int get_block_device_harder(const char *path, dev_t *dev);

int lock_whole_block_device(dev_t devt, int operation);
Commit	Line	Data
18c528e9 LP	1	/* SPDX-License-Identifier: LGPL-2.1+ */
	2	#pragma once
	3
18c528e9 LP	4	#include <sys/types.h>
	5
	6	#include "macro.h"
	7	#include "stdio-util.h"
	8	#include "string-util.h"
	9
	10	#define SYS_BLOCK_PATH_MAX(suffix) \
	11	(STRLEN("/sys/dev/block/") + DECIMAL_STR_MAX(dev_t) + 1 + DECIMAL_STR_MAX(dev_t) + strlen_ptr(suffix))
	12	#define xsprintf_sys_block_path(buf, suffix, devno) \
	13	xsprintf(buf, "/sys/dev/block/%u:%u%s", major(devno), minor(devno), strempty(suffix))
	14
	15	int block_get_whole_disk(dev_t d, dev_t *ret);
880f09bd	16	int block_get_originating(dev_t d, dev_t *ret);
18c528e9 LP	17
	18	int get_block_device(const char path, dev_t dev);
	19
	20	int get_block_device_harder(const char path, dev_t dev);
ac83e5ae LP	21
ac83e5ae LP	22	int lock_whole_block_device(dev_t devt, int operation);