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/* vi: set sw=4 ts=4: */
/*
* rdev - print device node associated with a filesystem
*
* Copyright (c) 2008 Nuovation System Designs, LLC
* Grant Erickson <gerickson@nuovations.com>
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*
*/
//config:config RDEV
//config: bool "rdev (1.4 kb)"
//config: default y
//config: help
//config: Print the device node associated with the filesystem mounted at '/'.
//applet:IF_RDEV(APPLET(rdev, BB_DIR_USR_SBIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_RDEV) += rdev.o
//usage:#define rdev_trivial_usage
//usage: ""
//usage:#define rdev_full_usage "\n\n"
//usage: "Print the device node associated with the filesystem mounted at '/'"
//usage:
//usage:#define rdev_example_usage
//usage: "$ rdev\n"
//usage: "/dev/mtdblock9 /\n"
#include "libbb.h"
int rdev_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int rdev_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
const char *root_device = find_block_device("/");
if (root_device) {
printf("%s /\n", root_device);
return EXIT_SUCCESS;
}
return EXIT_FAILURE;
}
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