Use busybox's show_usage function for help

2 files changed, 4 insertions, 16 deletions

diff --git a/include/usage.h b/include/usage.h
index 12289ad5b..9e16a085f 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1916,6 +1916,7 @@
 #define udhcpc_trivial_usage \
         "[-fqv] [-c CLIENTID] [-H HOSTNAME] [-i INTERFACE]\n[-p file] [-r IP] [-s script]"
 #define udhcpc_full_usage \
+        "\tUsage: udhcpcd [OPTIONS]\n" \
         "\t-c,\t--clientid=CLIENTID\tClient identifier\n" \
         "\t-H,\t--hostname=HOSTNAME\tClient hostname\n" \
         "\t-f,\t--foreground\tDo not fork after getting lease\n" \
diff --git a/networking/udhcpc.c b/networking/udhcpc.c
index e2ba46bab..c05ca4557 100644
--- a/networking/udhcpc.c
+++ b/networking/udhcpc.c
@@ -1254,7 +1254,7 @@ int udhcpc_main(int argc, char *argv[])
         while (1) {
                 int option_index = 0;
 
-                c = getopt_long(argc, argv, "c:fH:hi:np:qr:s:v", l_options,
+                c = getopt_long(argc, argv, "c:fH:i:np:qr:s:v", l_options,
                                                 &option_index);
                 if (c == -1) {
                         break;
@@ -1291,21 +1291,6 @@ int udhcpc_main(int argc, char *argv[])
                         client_config.hostname[OPT_LEN] = len;
                         strncpy(client_config.hostname + 2, optarg, len);
                         break;
-                case 'h':
-                        puts("Usage: udhcpcd [OPTIONS]\n\n"
-                                 "  -c, --clientid=CLIENTID         Client identifier\n"
-                                 "  -H, --hostname=HOSTNAME         Client hostname\n"
-                                 "  -f, --foreground                Do not fork after getting lease\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");
-                        return 0;
                 case 'i':
                         client_config.interface = optarg;
                         break;
@@ -1328,6 +1313,8 @@ int udhcpc_main(int argc, char *argv[])
                         printf("udhcpcd, version %s\n\n", VERSION);
                         exit_client(0);
                         break;
+                default:
+                        show_usage();
                 }
         }