| /* 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. |
| * |
| */ |
| |
| //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; |
| } |