src/basic/blockdev-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2010 Lennart Poettering
   8 ***/
   9
  10 #include <sys/types.h>
  11
  12 #include "macro.h"
  13 #include "stdio-util.h"
  14 #include "string-util.h"
  15
  16 #define SYS_BLOCK_PATH_MAX(suffix)                                      \
  17         (STRLEN("/sys/dev/block/") + DECIMAL_STR_MAX(dev_t) + 1 + DECIMAL_STR_MAX(dev_t) + strlen_ptr(suffix))
  18 #define xsprintf_sys_block_path(buf, suffix, devno)                     \
  19         xsprintf(buf, "/sys/dev/block/%u:%u%s", major(devno), minor(devno), strempty(suffix))
  20
  21 int block_get_whole_disk(dev_t d, dev_t *ret);
  22
  23 int get_block_device(const char *path, dev_t *dev);
  24
  25 int get_block_device_harder(const char *path, dev_t *dev);