diff options
Diffstat (limited to 'util-linux')
| -rw-r--r-- | util-linux/Config.in | 6 | ||||
| -rw-r--r-- | util-linux/Kbuild | 1 | ||||
| -rw-r--r-- | util-linux/rdev.c | 24 |
3 files changed, 31 insertions, 0 deletions
diff --git a/util-linux/Config.in b/util-linux/Config.in index 7f61bf4d9..2ba9f0166 100644 --- a/util-linux/Config.in +++ b/util-linux/Config.in @@ -707,6 +707,12 @@ config RDATE the RFC868 protocol, which is built into the inetd daemon on most systems. +config RDEV + bool "rdev" + default n + help + Print the device node associated with the filesystem mounted at '/'. + config READPROFILE bool "readprofile" default n diff --git a/util-linux/Kbuild b/util-linux/Kbuild index c0c2db701..38569c69b 100644 --- a/util-linux/Kbuild +++ b/util-linux/Kbuild @@ -26,6 +26,7 @@ lib-$(CONFIG_MORE) += more.o lib-$(CONFIG_MOUNT) += mount.o lib-$(CONFIG_PIVOT_ROOT) += pivot_root.o lib-$(CONFIG_RDATE) += rdate.o +lib-$(CONFIG_RDEV) += rdev.o lib-$(CONFIG_READPROFILE) += readprofile.o lib-$(CONFIG_RTCWAKE) += rtcwake.o lib-$(CONFIG_SCRIPT) += script.o diff --git a/util-linux/rdev.c b/util-linux/rdev.c new file mode 100644 index 000000000..33abd39dc --- /dev/null +++ b/util-linux/rdev.c @@ -0,0 +1,24 @@ +/* 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 tarball for details. + * + */ + +#include "libbb.h" + +int rdev_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int rdev_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) +{ + char const * const root_device = find_block_device("/"); + + if (root_device != NULL) { + printf("%s /\n", root_device); + return EXIT_SUCCESS; + } + return EXIT_FAILURE; +} |