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289 20 0 309 135 networking/brctl.o
335 23 0 358 166 networking/brctl-verbose-ops.o
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Small implementation of brctl for busybox.
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*
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* Copyright (C) 2008 by Bernhard Fischer
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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#include <linux/sockios.h>
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#include <net/if.h>
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#ifdef ENABLE_FEATURE_BRCTL_SHOW
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#error Remove these
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#endif
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#define ENABLE_FEATURE_BRCTL_SHOW 0
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#define USE_FEATURE_BRCTL_SHOW(...)
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/* Fancy diagnostics -- printing add/del -- costs 49 bytes. */
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#if 0
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#define BRCTL_VERBOSE(...) __VA_ARGS__
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#else
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#define BRCTL_VERBOSE(...)
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#endif
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int brctl_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int brctl_main(int argc, char **argv)
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{
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int fd;
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static const char keywords[] ALIGN1 =
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"addbr\0" "delbr\0" "addif\0" "delif\0"
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USE_FEATURE_BRCTL_SHOW("show\0");
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enum { ARG_addbr = 1, ARG_delbr, ARG_addif, ARG_delif
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USE_FEATURE_BRCTL_SHOW(, ARG_show) };
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smalluint key;
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static char info[] = BRCTL_VERBOSE("%s ")"bridge %s\0 iface %s";
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argv++;
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while (*argv) {
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BRCTL_VERBOSE(char *op;)
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key = index_in_strings(keywords, *argv) + 1;
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if (key == 0) /* no match found in keywords array, bail out. */
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bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
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argv++;
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#if ENABLE_FEATURE_BRCTL_SHOW
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if (key == ARG_show) { /* show */
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;
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}
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#endif
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BRCTL_VERBOSE(op = (char*)((key % 2) ? "add" : "del");)
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fd = xsocket(AF_INET, SOCK_STREAM, 0);
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if (key < 3) {/* addbr or delbr */
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char *br;
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br = *(argv++);
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if (ioctl(fd, key == ARG_addbr ? SIOCBRADDBR : SIOCBRDELBR, br) < 0)
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{
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info[9 BRCTL_VERBOSE(+3)] = '\0';
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bb_perror_msg_and_die(info, BRCTL_VERBOSE(op,) br);
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}
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}
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if (key > 2) { /* addif or delif */
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struct ifreq ifr;
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char *br, *brif;
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br = *(argv++);
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if (!*argv)
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bb_show_usage();
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brif = *(argv++);
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if (!(ifr.ifr_ifindex = if_nametoindex(brif))) {
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bb_perror_msg_and_die(info+11 BRCTL_VERBOSE(+3), brif);
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}
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safe_strncpy(ifr.ifr_name, br, IFNAMSIZ);
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if (ioctl(fd,
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key == ARG_addif ? SIOCBRADDIF : SIOCBRDELIF, &ifr) < 0) {
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info[9 BRCTL_VERBOSE(+3)] = ',';
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bb_perror_msg_and_die (info, BRCTL_VERBOSE(op,) br, brif);
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}
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}
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if (ENABLE_FEATURE_CLEAN_UP)
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close(fd);
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}
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return EXIT_SUCCESS;
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}
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