blob: 465281756e3e12d44c43dd7279f81929c49f9005
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * rdev - print device node associated with a filesystem |
4 | * |
5 | * Copyright (c) 2008 Nuovation System Designs, LLC |
6 | * Grant Erickson <gerickson@nuovations.com> |
7 | * |
8 | * Licensed under GPLv2, see file LICENSE in this source tree. |
9 | * |
10 | */ |
11 | |
12 | //usage:#define rdev_trivial_usage |
13 | //usage: "" |
14 | //usage:#define rdev_full_usage "\n\n" |
15 | //usage: "Print the device node associated with the filesystem mounted at '/'" |
16 | //usage: |
17 | //usage:#define rdev_example_usage |
18 | //usage: "$ rdev\n" |
19 | //usage: "/dev/mtdblock9 /\n" |
20 | |
21 | #include "libbb.h" |
22 | |
23 | int rdev_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
24 | int rdev_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) |
25 | { |
26 | const char *root_device = find_block_device("/"); |
27 | |
28 | if (root_device) { |
29 | printf("%s /\n", root_device); |
30 | return EXIT_SUCCESS; |
31 | } |
32 | return EXIT_FAILURE; |
33 | } |
34 |