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.
11 //config: bool "rdev (1.4 kb)"
14 //config: Print the device node associated with the filesystem mounted at '/'.
16 //applet:IF_RDEV(APPLET_NOEXEC(rdev, rdev, BB_DIR_USR_SBIN, BB_SUID_DROP, rdev))
18 //kbuild:lib-$(CONFIG_RDEV) += rdev.o
20 //usage:#define rdev_trivial_usage
22 //usage:#define rdev_full_usage "\n\n"
23 //usage: "Print the device node associated with the filesystem mounted at '/'"
25 //usage:#define rdev_example_usage
27 //usage: "/dev/mtdblock9 /\n"
31 int rdev_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
32 int rdev_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
34 const char *root_device = find_block_device("/");
37 printf("%s /\n", root_device);