udhcpd: update --help to include -a MSEC

function                                             old     new   delta
packed_usage                                       33886   33891      +5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 12 insertions, 6 deletions

diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c
index 91f70970a..eef8a3b59 100644
--- a/networking/udhcp/dhcpd.c
+++ b/networking/udhcp/dhcpd.c
@@ -27,7 +27,7 @@
 //kbuild:lib-$(CONFIG_FEATURE_UDHCP_RFC3397) += domain_codec.o
 
 //usage:#define udhcpd_trivial_usage
-//usage:       "[-fS] [-I ADDR]" IF_FEATURE_UDHCP_PORT(" [-P PORT]") " [CONFFILE]"
+//usage:       "[-fS] [-I ADDR] [-a MSEC]" IF_FEATURE_UDHCP_PORT(" [-P PORT]") " [CONFFILE]"
 //usage:#define udhcpd_full_usage "\n\n"
 //usage:       "DHCP server\n"
 //usage:     "\n        -f      Run in foreground"
@@ -877,6 +877,12 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
         /* Setup the signal pipe on fds 3,4 - must be before openlog() */
         udhcp_sp_setup();
 
+#define OPT_f (1 << 0)
+#define OPT_S (1 << 1)
+#define OPT_I (1 << 2)
+#define OPT_v (1 << 3)
+#define OPT_a (1 << 4)
+#define OPT_P (1 << 5)
         opt = getopt32(argv, "^"
                 "fSI:va:"IF_FEATURE_UDHCP_PORT("P:")
                 "\0"
@@ -887,24 +893,24 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
                 , &str_a
                 IF_FEATURE_UDHCP_PORT(, &str_P)
                 IF_UDHCP_VERBOSE(, &dhcp_verbose)
-                );
-        if (!(opt & 1)) { /* no -f */
+        );
+        if (!(opt & OPT_f)) { /* no -f */
                 bb_daemonize_or_rexec(0, argv);
                 logmode = LOGMODE_NONE;
         }
         /* update argv after the possible vfork+exec in daemonize */
         argv += optind;
-        if (opt & 2) { /* -S */
+        if (opt & OPT_S) {
                 openlog(applet_name, LOG_PID, LOG_DAEMON);
                 logmode |= LOGMODE_SYSLOG;
         }
-        if (opt & 4) { /* -I */
+        if (opt & OPT_I) {
                 len_and_sockaddr *lsa = xhost_and_af2sockaddr(str_I, 0, AF_INET);
                 server_data.server_nip = lsa->u.sin.sin_addr.s_addr;
                 free(lsa);
         }
 #if ENABLE_FEATURE_UDHCP_PORT
-        if (opt & 32) { /* -P */
+        if (opt & OPT_P) {
                 SERVER_PORT = xatou16(str_P);
                 CLIENT_PORT = SERVER_PORT + 1;
         }