ether-wake: save a few more bytes of code

diff --git a/networking/ether-wake.c b/networking/ether-wake.c
index 71c3abf..ed41590 100644 (file)
--- a/networking/ether-wake.c
+++ b/networking/ether-wake.c
@@ -182,11 +182,10 @@ int ether_wake_main(int argc, char **argv);
 int ether_wake_main(int argc, char **argv)
 {
        const char *ifname = "eth0";
-       char *pass = NULL;
+       char *pass;
        unsigned flags;
        unsigned char wol_passwd[6];
        int wol_passwd_sz = 0;
-
        int s;                                          /* Raw socket */
        int pktsize;
        unsigned char outpack[1000];
@@ -195,23 +194,23 @@ int ether_wake_main(int argc, char **argv)
        struct whereto_t whereto;       /* who to wake up */
 
        /* handle misc user options */
+       opt_complementary = "=1";
        flags = getopt32(argc, argv, "bi:p:", &ifname, &pass);
-       if (optind == argc)
-               bb_show_usage();
-       if (pass)
+       if (flags & 4) /* -p */
                wol_passwd_sz = get_wol_pw(pass, wol_passwd);
+       flags &= 1; /* we further interested only in -b [bcast] flag */
 
        /* create the raw socket */
        s = make_socket();
 
        /* now that we have a raw socket we can drop root */
-       xsetuid(getuid());
+       /* xsetuid(getuid()); - but save on code size... */
 
        /* look up the dest mac address */
        get_dest_addr(argv[optind], &eaddr);
 
        /* fill out the header of the packet */
-       pktsize = get_fill(outpack, &eaddr, flags & 1 /* OPT_BROADCAST */);
+       pktsize = get_fill(outpack, &eaddr, flags /* & 1 OPT_BROADCAST */);
 
        bb_debug_dump_packet(outpack, pktsize);
 
@@ -249,7 +248,7 @@ int ether_wake_main(int argc, char **argv)
        bb_debug_dump_packet(outpack, pktsize);
 
        /* This is necessary for broadcasts to work */
-       if (flags & 1 /* OPT_BROADCAST */) {
+       if (flags /* & 1 OPT_BROADCAST */) {
                if (setsockopt_broadcast(s) != 0)
                        bb_perror_msg("SO_BROADCAST");
        }