+/* vi: set sw=4 ts=4: */
/*
- * iplink.c "ip link".
+ * iplink.c "ip link".
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/socket.h>
-#include <linux/if.h>
-#include <linux/if_packet.h>
-#include <linux/if_ether.h>
-#include <linux/sockios.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <string.h>
+#include "libbb.h"
+
#include <sys/ioctl.h>
-#include <linux/sockios.h>
+#include <sys/socket.h>
+
+#include <net/if.h>
+#include <net/if_packet.h>
+#include <netpacket/packet.h>
+
+#include <net/ethernet.h>
#include "rt_names.h"
#include "utils.h"
#include "ip_common.h"
-#include "busybox.h"
+/* take from linux/sockios.h */
+#define SIOCSIFNAME 0x8923 /* set interface name */
static int on_off(char *msg)
{
- fprintf(stderr, "Error: argument of \"%s\" must be \"on\" or \"off\"\n", msg);
+ bb_error_msg("error: argument of \"%s\" must be \"on\" or \"off\"", msg);
return -1;
}
int fd;
int err;
- strcpy(ifr.ifr_name, dev);
+ strncpy(ifr.ifr_name, dev, sizeof(ifr.ifr_name));
fd = get_ctl_fd();
if (fd < 0)
return -1;
int fd;
int err;
- strcpy(ifr.ifr_name, dev);
- strcpy(ifr.ifr_newname, newdev);
+ strncpy(ifr.ifr_name, dev, sizeof(ifr.ifr_name));
+ strncpy(ifr.ifr_newname, newdev, sizeof(ifr.ifr_newname));
fd = get_ctl_fd();
if (fd < 0)
return -1;
return -1;
memset(&ifr, 0, sizeof(ifr));
- strcpy(ifr.ifr_name, dev);
- ifr.ifr_qlen = qlen;
+ strncpy(ifr.ifr_name, dev, sizeof(ifr.ifr_name));
+ ifr.ifr_qlen = qlen;
if (ioctl(s, SIOCSIFTXQLEN, &ifr) < 0) {
perror("SIOCSIFXQLEN");
close(s);
}
close(s);
- return 0;
+ return 0;
}
static int set_mtu(char *dev, int mtu)
return -1;
memset(&ifr, 0, sizeof(ifr));
- strcpy(ifr.ifr_name, dev);
- ifr.ifr_mtu = mtu;
+ strncpy(ifr.ifr_name, dev, sizeof(ifr.ifr_name));
+ ifr.ifr_mtu = mtu;
if (ioctl(s, SIOCSIFMTU, &ifr) < 0) {
perror("SIOCSIFMTU");
close(s);
}
close(s);
- return 0;
+ return 0;
}
static int get_address(char *dev, int *htype)
{
struct ifreq ifr;
struct sockaddr_ll me;
- int alen;
+ socklen_t alen;
int s;
s = socket(PF_PACKET, SOCK_DGRAM, 0);
- if (s < 0) {
+ if (s < 0) {
perror("socket(PF_PACKET)");
return -1;
}
memset(&ifr, 0, sizeof(ifr));
- strcpy(ifr.ifr_name, dev);
+ strncpy(ifr.ifr_name, dev, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
perror("SIOCGIFINDEX");
close(s);
int alen;
memset(ifr, 0, sizeof(*ifr));
- strcpy(ifr->ifr_name, dev);
+ strncpy(ifr->ifr_name, dev, sizeof(ifr->ifr_name));
ifr->ifr_hwaddr.sa_family = hatype;
- alen = ll_addr_a2n(ifr->ifr_hwaddr.sa_data, 14, lla);
+ alen = ll_addr_a2n((unsigned char *)(ifr->ifr_hwaddr.sa_data), 14, lla);
if (alen < 0)
return -1;
if (alen != halen) {
- fprintf(stderr, "Wrong address (%s) length: expected %d bytes\n", lla, halen);
+ bb_error_msg("wrong address (%s) length: expected %d bytes", lla, halen);
return -1;
}
- return 0;
+ return 0;
}
static int set_address(struct ifreq *ifr, int brd)
return -1;
}
close(s);
- return 0;
+ return 0;
}
if (mtu != -1)
duparg("mtu", *argv);
if (get_integer(&mtu, *argv, 0))
- invarg("Invalid \"mtu\" value\n", *argv);
+ invarg(*argv, "mtu");
} else if (strcmp(*argv, "multicast") == 0) {
NEXT_ARG();
mask |= IFF_MULTICAST;
flags |= IFF_NOARP;
} else
return on_off("noarp");
+ } else if (strcmp(*argv, "addr") == 0) {
+ NEXT_ARG();
+ newaddr = *argv;
} else {
- if (strcmp(*argv, "dev") == 0) {
+ if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
}
if (dev)
}
if (!dev) {
- fprintf(stderr, "Not enough of information: \"dev\" argument is required.\n");
+ bb_error_msg(bb_msg_requires_arg, "\"dev\"");
exit(-1);
}
}
if (newbrd) {
if (parse_address(dev, htype, halen, newbrd, &ifr1) < 0)
- return -1;
+ return -1;
}
}
return -1;
dev = newname;
}
- if (qlen != -1) {
+ if (qlen != -1) {
if (set_qlen(dev, qlen) < 0)
- return -1;
+ return -1;
}
- if (mtu != -1) {
+ if (mtu != -1) {
if (set_mtu(dev, mtu) < 0)
- return -1;
+ return -1;
}
if (newaddr || newbrd) {
if (newbrd) {
if (set_address(&ifr1, 1) < 0)
- return -1;
+ return -1;
}
if (newaddr) {
if (set_address(&ifr0, 0) < 0)
return 0;
}
+static int ipaddr_list_link(int argc, char **argv)
+{
+ preferred_family = AF_PACKET;
+ return ipaddr_list_or_flush(argc, argv, 0);
+}
+
int do_iplink(int argc, char **argv)
{
if (argc > 0) {
} else
return ipaddr_list_link(0, NULL);
- fprintf(stderr, "Command \"%s\" is unknown, try \"ip link help\".\n", *argv);
+ bb_error_msg("command \"%s\" is unknown", *argv);
exit(-1);
}