start attempting to bring udhcp in busybox back to the state where it is (ideally) an exact copy of udhcp outside of busybox so that its easy to merge back and forth

1 files changed, 30 insertions, 1 deletions

diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index d18a963a9..55664abf9 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -75,6 +75,35 @@ struct client_config_t client_config = {
         arp: "\0\0\0\0\0\0",            /* appease gcc-3.0 */
 };
 
+#ifndef IN_BUSYBOX
+static void __attribute__ ((noreturn)) show_usage(void)
+{
+        printf(
+"Usage: udhcpc [OPTIONS]\n\n"
+"  -c, --clientid=CLIENTID         Client identifier\n"
+"  -H, --hostname=HOSTNAME         Client hostname\n"
+"  -h                              Alias for -H\n"
+"  -f, --foreground                Do not fork after getting lease\n"
+"  -b, --background                Fork to background if lease cannot be\n"
+"                                  immediately negotiated.\n"
+"  -i, --interface=INTERFACE       Interface to use (default: eth0)\n"
+"  -n, --now                       Exit with failure if lease cannot be\n"
+"                                  immediately negotiated.\n"
+"  -p, --pidfile=file              Store process ID of daemon in file\n"
+"  -q, --quit                      Quit after obtaining lease\n"
+"  -r, --request=IP                IP address to request (default: none)\n"
+"  -s, --script=file               Run file at dhcp events (default:\n"
+"                                  " DEFAULT_SCRIPT ")\n"
+"  -v, --version                   Display version\n"
+        );
+        exit(0);
+}
+#else
+#define show_usage bb_show_usage
+extern void show_usage(void) __attribute__ ((noreturn));
+#endif
+
+
 /* just a little helper */
 static void change_mode(int new_mode)
 {
@@ -233,7 +262,7 @@ int udhcpc_main(int argc, char *argv[])
                         return(0);
                         break;
                 default:
-                        bb_show_usage();
+                        show_usage();
                 }
         }