6ca409e0e4
trylink: explain how to modify link and drastically decrease amount of padding (unfortunately, needs hand editing ATM). *: add ALIGN1 / ALIGN2 to global strings and arrays of bytes and shorts size saving: 0.5k
89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* ip.c "ip" utility frontend.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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*
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*
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* Changes:
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*
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* Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
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*/
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#include "ip_common.h" /* #include "libbb.h" is inside */
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#include "utils.h"
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int preferred_family = AF_UNSPEC;
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smallint oneline;
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char _SL_;
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void ip_parse_common_args(int *argcp, char ***argvp)
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{
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int argc = *argcp;
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char **argv = *argvp;
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static const char ip_common_commands[] ALIGN1 =
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"-family\0""inet\0""inet6\0""link\0"
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"-4\0""-6\0""-0\0""-oneline\0";
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enum {
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ARG_family = 1,
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ARG_inet,
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ARG_inet6,
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ARG_link,
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ARG_IPv4,
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ARG_IPv6,
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ARG_packet,
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ARG_oneline
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};
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smalluint arg;
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while (argc > 1) {
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char *opt = argv[1];
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if (strcmp(opt,"--") == 0) {
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argc--;
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argv++;
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break;
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}
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if (opt[0] != '-')
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break;
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if (opt[1] == '-')
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opt++;
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arg = index_in_strings(ip_common_commands, opt) + 1;
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if (arg == ARG_family) {
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argc--;
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argv++;
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if (!argv[1])
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bb_show_usage();
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arg = index_in_strings(ip_common_commands, argv[1]) + 1;
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if (arg == ARG_inet)
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preferred_family = AF_INET;
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else if (arg == ARG_inet6)
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preferred_family = AF_INET6;
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else if (arg == ARG_link)
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preferred_family = AF_PACKET;
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else
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invarg(argv[1], "protocol family");
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} else if (arg == ARG_IPv4) {
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preferred_family = AF_INET;
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} else if (arg == ARG_IPv6) {
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preferred_family = AF_INET6;
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} else if (arg == ARG_packet) {
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preferred_family = AF_PACKET;
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} else if (arg == ARG_oneline) {
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++oneline;
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} else {
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bb_show_usage();
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}
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argc--;
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argv++;
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}
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_SL_ = oneline ? '\\' : '\n';
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*argcp = argc;
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*argvp = argv;
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}
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