Add usage messages for applets without them.

git-svn-id: svn://busybox.net/trunk/busybox@881 69ca8d6d-28ef-0310-b511-8ec308f3f277

3 files changed, 9 insertions, 0 deletions

diff --git a/init/halt.c b/init/halt.c
index 2ca36d038..7baccf5d4 100644
--- a/init/halt.c
+++ b/init/halt.c
@@ -26,6 +26,9 @@
 
 extern int halt_main(int argc, char **argv)
 {
+        if (argc > 1 && strcmp(argv[1], "--help") == 0)
+                usage(halt_usage);
+
 #ifdef BB_FEATURE_LINUXRC
         /* don't assume init's pid == 1 */
         return(kill(*(findPidByName("init")), SIGUSR1));
diff --git a/init/poweroff.c b/init/poweroff.c
index 126a0fb94..b499d141f 100644
--- a/init/poweroff.c
+++ b/init/poweroff.c
@@ -26,6 +26,9 @@
 
 extern int poweroff_main(int argc, char **argv)
 {
+        if (argc > 1 && strcmp(argv[1], "--help") == 0)
+                usage(poweroff_usage);
+
 #ifdef BB_FEATURE_LINUXRC
         /* don't assume init's pid == 1 */
         return(kill(*(findPidByName("init")), SIGUSR2));
diff --git a/init/reboot.c b/init/reboot.c
index bde8dbd77..bef9b26f0 100644
--- a/init/reboot.c
+++ b/init/reboot.c
@@ -26,6 +26,9 @@
 
 extern int reboot_main(int argc, char **argv)
 {
+        if (argc > 1 && strcmp(argv[1], "--help") == 0)
+                usage(reboot_usage);
+
 #ifdef BB_FEATURE_LINUXRC
         /* don't assume init's pid == 1 */
         return(kill(*(findPidByName("init")), SIGINT));