diff options
| -rw-r--r-- | include/applets.h | 1 | ||||
| -rw-r--r-- | include/usage.h | 8 | ||||
| -rw-r--r-- | scripts/defconfig | 1 | ||||
| -rw-r--r-- | util-linux/Config.in | 6 | ||||
| -rw-r--r-- | util-linux/Kbuild | 1 | ||||
| -rw-r--r-- | util-linux/rdev.c | 24 |
6 files changed, 41 insertions, 0 deletions
diff --git a/include/applets.h b/include/applets.h index 27c118e..2363e72 100644 --- a/include/applets.h +++ b/include/applets.h @@ -286,6 +286,7 @@ USE_PSCAN(APPLET(pscan, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) USE_PWD(APPLET_NOFORK(pwd, pwd, _BB_DIR_BIN, _BB_SUID_NEVER, pwd)) USE_RAIDAUTORUN(APPLET(raidautorun, _BB_DIR_SBIN, _BB_SUID_NEVER)) USE_RDATE(APPLET(rdate, _BB_DIR_USR_SBIN, _BB_SUID_NEVER)) +USE_RDEV(APPLET(rdev, _BB_DIR_USR_SBIN, _BB_SUID_NEVER)) USE_READAHEAD(APPLET(readahead, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) USE_READLINK(APPLET(readlink, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) USE_READPROFILE(APPLET(readprofile, _BB_DIR_USR_SBIN, _BB_SUID_NEVER)) diff --git a/include/usage.h b/include/usage.h index 1e05eab..57a9f99 100644 --- a/include/usage.h +++ b/include/usage.h @@ -3168,6 +3168,14 @@ "\n -s Set the system date and time (default)" \ "\n -p Print the date and time" \ +#define rdev_trivial_usage \ + "" +#define rdev_full_usage "\n\n" \ + "Print the device node associated with the filesystem mounted at '/'" +#define rdev_example_usage \ + "$ rdev\n" \ + "/dev/mtdblock9 /\n" + #define readahead_trivial_usage \ "[FILE]..." #define readahead_full_usage "\n\n" \ diff --git a/scripts/defconfig b/scripts/defconfig index 404c50d..a3e98a1 100644 --- a/scripts/defconfig +++ b/scripts/defconfig @@ -520,6 +520,7 @@ CONFIG_FEATURE_MOUNT_FLAGS=y CONFIG_FEATURE_MOUNT_FSTAB=y CONFIG_PIVOT_ROOT=y CONFIG_RDATE=y +CONFIG_RDEV=y CONFIG_READPROFILE=y CONFIG_RTCWAKE=y CONFIG_SCRIPT=y diff --git a/util-linux/Config.in b/util-linux/Config.in index 7f61bf4..2ba9f01 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 c0c2db7..38569c6 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 0000000..33abd39 --- /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; +} |