From fb00143be3e4021275e60310de7e8a1b400c74f3 Mon Sep 17 00:00:00 2001
From: aldot <aldot@69ca8d6d-28ef-0310-b511-8ec308f3f277>
Date: Fri, 28 Oct 2005 20:37:03 +0000
Subject: - add BB_APPLET_RUNLEVEL used by emdebian via /etc/init.d/rc. Note
that we leave the buggy CONFIG_* namespace now, so please fix any applet you
thouch.
git-svn-id: svn://busybox.net/trunk/busybox@11965 69ca8d6d-28ef-0310-b511-8ec308f3f277
---
include/applets.h | 3 +++
include/usage.h | 12 ++++++++++++
miscutils/Config.in | 9 +++++++++
miscutils/Makefile.in | 1 +
miscutils/runlevel.c | 43 +++++++++++++++++++++++++++++++++++++++++++
5 files changed, 68 insertions(+)
create mode 100644 miscutils/runlevel.c
diff --git a/include/applets.h b/include/applets.h
index 2b2c45d67..ec3a892d0 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -565,6 +565,9 @@
#ifdef CONFIG_RUN_PARTS
APPLET_ODDNAME("run-parts", run_parts_main, _BB_DIR_BIN, _BB_SUID_NEVER, run_parts)
#endif
+#if BB_APPLET_RUNLEVEL
+ APPLET(runlevel, runlevel_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
+#endif
#ifdef CONFIG_RX
APPLET(rx, rx_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
#endif
diff --git a/include/usage.h b/include/usage.h
index 79a61d20a..a82230e41 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -2450,6 +2450,18 @@
"\t-a ARG\tPass ARG as an argument for every program invoked\n" \
"\t-u MASK\tSet the umask to MASK before executing every program"
+#if BB_APPLET_RUNLEVEL
+#define runlevel_trivial_usage \
+ "[utmp]"
+#define runlevel_full_usage \
+ "Find the current and previous system runlevel.\n\n" \
+ "If no utmp file exists or if no runlevel record can be found,\n" \
+ "runlevel prints \"unknown\""
+#define runlevel_example_usage \
+ "$ runlevel /var/run/utmp\n" \
+ "N 2"
+#endif
+
#define rx_trivial_usage \
"FILE"
#define rx_full_usage \
diff --git a/miscutils/Config.in b/miscutils/Config.in
index f07ca36b3..4d81dde0d 100644
--- a/miscutils/Config.in
+++ b/miscutils/Config.in
@@ -255,6 +255,15 @@ config CONFIG_MT
to advance or rewind a tape past a specified number of archive
files on the tape.
+config BB_APPLET_RUNLEVEL
+ bool "runlevel"
+ default n
+ help
+ find the current and previous system runlevel.
+
+ This applet uses utmp but does not rely on busybox supporing
+ utmp on purpose. It is used by e.g. emdebian via /etc/init.d/rc.
+
config CONFIG_RX
bool "rx"
default n
diff --git a/miscutils/Makefile.in b/miscutils/Makefile.in
index 808ce36de..5bd522c11 100644
--- a/miscutils/Makefile.in
+++ b/miscutils/Makefile.in
@@ -24,6 +24,7 @@ MISCUTILS-${CONFIG_LESS} += less.o
MISCUTILS-$(CONFIG_MAKEDEVS) += makedevs.o
MISCUTILS-$(CONFIG_MOUNTPOINT) += mountpoint.o
MISCUTILS-$(CONFIG_MT) += mt.o
+MISCUTILS-$(BB_APPLET_RUNLEVEL) += runlevel.o
MISCUTILS-$(CONFIG_RX) += rx.o
MISCUTILS-$(CONFIG_SETSID) += setsid.o
MISCUTILS-$(CONFIG_STRINGS) += strings.o
diff --git a/miscutils/runlevel.c b/miscutils/runlevel.c
new file mode 100644
index 000000000..dfa846f81
--- /dev/null
+++ b/miscutils/runlevel.c
@@ -0,0 +1,43 @@
+/*
+ * runlevel Prints out the previous and the current runlevel.
+ *
+ * Version: @(#)runlevel 1.20 16-Apr-1997 MvS
+ *
+ * This file is part of the sysvinit suite,
+ * Copyright 1991-1997 Miquel van Smoorenburg.
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ *
+ * initially busyboxified by Bernhard Fischer
+ */
+
+#include <stdio.h>
+#include <utmp.h>
+#include <time.h>
+#include <stdlib.h>
+
+#include "busybox.h"
+
+int runlevel_main(int argc, char *argv[])
+{
+ struct utmp *ut;
+ char prev;
+
+ if (argc > 1) utmpname(argv[1]);
+
+ setutent();
+ while ((ut = getutent()) != NULL) {
+ if (ut->ut_type == RUN_LVL) {
+ prev = ut->ut_pid / 256;
+ if (prev == 0) prev = 'N';
+ printf("%c %c\n", prev, ut->ut_pid % 256);
+ endutent();
+ return (0);
+ }
+ }
+
+ printf("unknown\n");
+ endutent();
+ return (1);
+}
+
--
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