1 /* vi: set sw=4 ts=4: */
3 * rdev - print device node associated with a filesystem
5 * Copyright (c) 2008 Nuovation System Designs, LLC
6 * Grant Erickson <gerickson@nuovations.com>
8 * Licensed under GPLv2, see file LICENSE in this source tree.
12 //config: bool "rdev (1.4 kb)"
15 //config: Print the device node associated with the filesystem mounted at '/'.
17 //applet:IF_RDEV(APPLET(rdev, BB_DIR_USR_SBIN, BB_SUID_DROP))
19 //kbuild:lib-$(CONFIG_RDEV) += rdev.o
21 //usage:#define rdev_trivial_usage
23 //usage:#define rdev_full_usage "\n\n"
24 //usage: "Print the device node associated with the filesystem mounted at '/'"
26 //usage:#define rdev_example_usage
28 //usage: "/dev/mtdblock9 /\n"
32 int rdev_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
33 int rdev_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
35 const char *root_device = find_block_device("/");
38 printf("%s /\n", root_device);