mirror of
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git
synced 2024-11-16 22:45:17 +08:00
915 lines
23 KiB
C
915 lines
23 KiB
C
/*
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* ipaddress.c "ip address".
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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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* Changes:
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* Laszlo Valko <valko@linux.karinthy.hu> 990223: address label must be zero terminated
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <string.h>
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#include <fnmatch.h>
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#include <linux/netdevice.h>
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#include <linux/if_arp.h>
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#include <linux/sockios.h>
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#include "rt_names.h"
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#include "utils.h"
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#include "ll_map.h"
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#include "ip_common.h"
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static struct
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{
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int ifindex;
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int family;
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int oneline;
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int showqueue;
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inet_prefix pfx;
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int scope, scopemask;
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int flags, flagmask;
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int up;
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char *label;
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int flushed;
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char *flushb;
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int flushp;
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int flushe;
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struct rtnl_handle *rth;
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} filter;
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static int do_link;
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static void usage(void) __attribute__((noreturn));
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static void usage(void)
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{
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if (do_link) {
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iplink_usage();
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}
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fprintf(stderr, "Usage: ip addr {add|del} IFADDR dev STRING\n");
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fprintf(stderr, " ip addr {show|flush} [ dev STRING ] [ scope SCOPE-ID ]\n");
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fprintf(stderr, " [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ]\n");
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fprintf(stderr, "IFADDR := PREFIX | ADDR peer PREFIX\n");
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fprintf(stderr, " [ broadcast ADDR ] [ anycast ADDR ]\n");
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fprintf(stderr, " [ label STRING ] [ scope SCOPE-ID ]\n");
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fprintf(stderr, "SCOPE-ID := [ host | link | global | NUMBER ]\n");
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fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
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fprintf(stderr, "FLAG := [ permanent | dynamic | secondary | primary |\n");
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fprintf(stderr, " tentative | deprecated ]\n");
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exit(-1);
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}
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void print_link_flags(FILE *fp, unsigned flags, unsigned mdown)
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{
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fprintf(fp, "<");
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if (flags & IFF_UP && !(flags & IFF_RUNNING))
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fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
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flags &= ~IFF_RUNNING;
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#define _PF(f) if (flags&IFF_##f) { \
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flags &= ~IFF_##f ; \
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fprintf(fp, #f "%s", flags ? "," : ""); }
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_PF(LOOPBACK);
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_PF(BROADCAST);
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_PF(POINTOPOINT);
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_PF(MULTICAST);
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_PF(NOARP);
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_PF(ALLMULTI);
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_PF(PROMISC);
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_PF(MASTER);
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_PF(SLAVE);
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_PF(DEBUG);
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_PF(DYNAMIC);
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_PF(AUTOMEDIA);
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_PF(PORTSEL);
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_PF(NOTRAILERS);
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_PF(UP);
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#undef _PF
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if (flags)
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fprintf(fp, "%x", flags);
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if (mdown)
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fprintf(fp, ",M-DOWN");
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fprintf(fp, "> ");
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}
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void print_queuelen(char *name)
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{
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struct ifreq ifr;
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int s;
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s = socket(AF_INET, SOCK_STREAM, 0);
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if (s < 0)
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return;
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memset(&ifr, 0, sizeof(ifr));
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strcpy(ifr.ifr_name, name);
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if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
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perror("SIOCGIFXQLEN");
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close(s);
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return;
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}
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close(s);
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if (ifr.ifr_qlen)
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printf("qlen %d", ifr.ifr_qlen);
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}
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int print_linkinfo(const struct sockaddr_nl *who,
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struct nlmsghdr *n, void *arg)
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{
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FILE *fp = (FILE*)arg;
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struct ifinfomsg *ifi = NLMSG_DATA(n);
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struct rtattr * tb[IFLA_MAX+1];
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int len = n->nlmsg_len;
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unsigned m_flag = 0;
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if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
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return 0;
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len -= NLMSG_LENGTH(sizeof(*ifi));
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if (len < 0)
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return -1;
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if (filter.ifindex && ifi->ifi_index != filter.ifindex)
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return 0;
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if (filter.up && !(ifi->ifi_flags&IFF_UP))
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return 0;
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parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
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if (tb[IFLA_IFNAME] == NULL) {
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fprintf(stderr, "BUG: nil ifname\n");
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return -1;
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}
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if (filter.label &&
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(!filter.family || filter.family == AF_PACKET) &&
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fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
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return 0;
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if (n->nlmsg_type == RTM_DELLINK)
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fprintf(fp, "Deleted ");
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fprintf(fp, "%d: %s", ifi->ifi_index,
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tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>");
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if (tb[IFLA_LINK]) {
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SPRINT_BUF(b1);
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int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
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if (iflink == 0)
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fprintf(fp, "@NONE: ");
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else {
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fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
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m_flag = ll_index_to_flags(iflink);
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m_flag = !(m_flag & IFF_UP);
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}
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} else {
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fprintf(fp, ": ");
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}
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print_link_flags(fp, ifi->ifi_flags, m_flag);
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if (tb[IFLA_MTU])
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fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
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if (tb[IFLA_QDISC])
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fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
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#ifdef IFLA_MASTER
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if (tb[IFLA_MASTER]) {
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SPRINT_BUF(b1);
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fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
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}
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#endif
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if (filter.showqueue)
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print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME]));
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if (!filter.family || filter.family == AF_PACKET) {
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SPRINT_BUF(b1);
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fprintf(fp, "%s", _SL_);
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fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
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if (tb[IFLA_ADDRESS]) {
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fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
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RTA_PAYLOAD(tb[IFLA_ADDRESS]),
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ifi->ifi_type,
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b1, sizeof(b1)));
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}
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if (tb[IFLA_BROADCAST]) {
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if (ifi->ifi_flags&IFF_POINTOPOINT)
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fprintf(fp, " peer ");
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else
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fprintf(fp, " brd ");
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fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
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RTA_PAYLOAD(tb[IFLA_BROADCAST]),
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ifi->ifi_type,
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b1, sizeof(b1)));
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}
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}
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if (do_link && tb[IFLA_STATS] && show_stats) {
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struct rtnl_link_stats slocal;
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struct rtnl_link_stats *s = RTA_DATA(tb[IFLA_STATS]);
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if (((unsigned long)s) & (sizeof(unsigned long)-1)) {
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memcpy(&slocal, s, sizeof(slocal));
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s = &slocal;
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}
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fprintf(fp, "%s", _SL_);
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fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s",
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s->rx_compressed ? "compressed" : "", _SL_);
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fprintf(fp, " %-10u %-8u %-7u %-7u %-7u %-7u",
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s->rx_bytes, s->rx_packets, s->rx_errors,
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s->rx_dropped, s->rx_over_errors,
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s->multicast
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);
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if (s->rx_compressed)
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fprintf(fp, " %-7u", s->rx_compressed);
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if (show_stats > 1) {
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fprintf(fp, "%s", _SL_);
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fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_);
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fprintf(fp, " %-7u %-7u %-7u %-7u %-7u",
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s->rx_length_errors,
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s->rx_crc_errors,
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s->rx_frame_errors,
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s->rx_fifo_errors,
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s->rx_missed_errors
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);
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}
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fprintf(fp, "%s", _SL_);
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fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
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s->tx_compressed ? "compressed" : "", _SL_);
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fprintf(fp, " %-10u %-8u %-7u %-7u %-7u %-7u",
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s->tx_bytes, s->tx_packets, s->tx_errors,
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s->tx_dropped, s->tx_carrier_errors, s->collisions);
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if (s->tx_compressed)
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fprintf(fp, " %-7u", s->tx_compressed);
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if (show_stats > 1) {
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fprintf(fp, "%s", _SL_);
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fprintf(fp, " TX errors: aborted fifo window heartbeat%s", _SL_);
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fprintf(fp, " %-7u %-7u %-7u %-7u",
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s->tx_aborted_errors,
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s->tx_fifo_errors,
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s->tx_window_errors,
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s->tx_heartbeat_errors
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);
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}
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}
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fprintf(fp, "\n");
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fflush(fp);
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return 0;
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}
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static int flush_update(void)
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{
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if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
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perror("Failed to send flush request\n");
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return -1;
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}
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filter.flushp = 0;
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return 0;
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}
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int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
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void *arg)
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{
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FILE *fp = (FILE*)arg;
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struct ifaddrmsg *ifa = NLMSG_DATA(n);
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int len = n->nlmsg_len;
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struct rtattr * rta_tb[IFA_MAX+1];
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char abuf[256];
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SPRINT_BUF(b1);
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if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
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return 0;
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len -= NLMSG_LENGTH(sizeof(*ifa));
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if (len < 0) {
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fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
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return -1;
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}
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if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
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return 0;
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parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
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if (!rta_tb[IFA_LOCAL])
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rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
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if (!rta_tb[IFA_ADDRESS])
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rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
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if (filter.ifindex && filter.ifindex != ifa->ifa_index)
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return 0;
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if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
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return 0;
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if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
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return 0;
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if (filter.label) {
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SPRINT_BUF(b1);
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const char *label;
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if (rta_tb[IFA_LABEL])
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label = RTA_DATA(rta_tb[IFA_LABEL]);
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else
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label = ll_idx_n2a(ifa->ifa_index, b1);
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if (fnmatch(filter.label, label, 0) != 0)
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return 0;
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}
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if (filter.pfx.family) {
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if (rta_tb[IFA_LOCAL]) {
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inet_prefix dst;
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memset(&dst, 0, sizeof(dst));
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dst.family = ifa->ifa_family;
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memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
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if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
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return 0;
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}
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}
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if (filter.family && filter.family != ifa->ifa_family)
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return 0;
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if (filter.flushb) {
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struct nlmsghdr *fn;
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if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
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if (flush_update())
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return -1;
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}
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fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
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memcpy(fn, n, n->nlmsg_len);
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fn->nlmsg_type = RTM_DELADDR;
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fn->nlmsg_flags = NLM_F_REQUEST;
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fn->nlmsg_seq = ++filter.rth->seq;
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filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
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filter.flushed++;
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if (show_stats < 2)
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return 0;
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}
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if (n->nlmsg_type == RTM_DELADDR)
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fprintf(fp, "Deleted ");
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if (filter.oneline || filter.flushb)
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fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
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if (ifa->ifa_family == AF_INET)
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fprintf(fp, " inet ");
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else if (ifa->ifa_family == AF_INET6)
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fprintf(fp, " inet6 ");
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else if (ifa->ifa_family == AF_DECnet)
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fprintf(fp, " dnet ");
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else if (ifa->ifa_family == AF_IPX)
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fprintf(fp, " ipx ");
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else
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fprintf(fp, " family %d ", ifa->ifa_family);
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if (rta_tb[IFA_LOCAL]) {
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fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family,
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RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
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RTA_DATA(rta_tb[IFA_LOCAL]),
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abuf, sizeof(abuf)));
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if (rta_tb[IFA_ADDRESS] == NULL ||
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memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) {
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fprintf(fp, "/%d ", ifa->ifa_prefixlen);
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} else {
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fprintf(fp, " peer %s/%d ",
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rt_addr_n2a(ifa->ifa_family,
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RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
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RTA_DATA(rta_tb[IFA_ADDRESS]),
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abuf, sizeof(abuf)),
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ifa->ifa_prefixlen);
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}
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}
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if (rta_tb[IFA_BROADCAST]) {
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fprintf(fp, "brd %s ",
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rt_addr_n2a(ifa->ifa_family,
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RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
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RTA_DATA(rta_tb[IFA_BROADCAST]),
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abuf, sizeof(abuf)));
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}
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if (rta_tb[IFA_ANYCAST]) {
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fprintf(fp, "any %s ",
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rt_addr_n2a(ifa->ifa_family,
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RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
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RTA_DATA(rta_tb[IFA_ANYCAST]),
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abuf, sizeof(abuf)));
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}
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fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
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if (ifa->ifa_flags&IFA_F_SECONDARY) {
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ifa->ifa_flags &= ~IFA_F_SECONDARY;
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fprintf(fp, "secondary ");
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}
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if (ifa->ifa_flags&IFA_F_TENTATIVE) {
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ifa->ifa_flags &= ~IFA_F_TENTATIVE;
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fprintf(fp, "tentative ");
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}
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if (ifa->ifa_flags&IFA_F_DEPRECATED) {
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ifa->ifa_flags &= ~IFA_F_DEPRECATED;
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fprintf(fp, "deprecated ");
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}
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if (!(ifa->ifa_flags&IFA_F_PERMANENT)) {
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fprintf(fp, "dynamic ");
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} else
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ifa->ifa_flags &= ~IFA_F_PERMANENT;
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if (ifa->ifa_flags)
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fprintf(fp, "flags %02x ", ifa->ifa_flags);
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if (rta_tb[IFA_LABEL])
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fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL]));
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if (rta_tb[IFA_CACHEINFO]) {
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struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
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char buf[128];
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fprintf(fp, "%s", _SL_);
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if (ci->ifa_valid == 0xFFFFFFFFU)
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sprintf(buf, "valid_lft forever");
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else
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sprintf(buf, "valid_lft %dsec", ci->ifa_valid);
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if (ci->ifa_prefered == 0xFFFFFFFFU)
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sprintf(buf+strlen(buf), " preferred_lft forever");
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else
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sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered);
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fprintf(fp, " %s", buf);
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}
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fprintf(fp, "\n");
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fflush(fp);
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return 0;
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}
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struct nlmsg_list
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{
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struct nlmsg_list *next;
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struct nlmsghdr h;
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};
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int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
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{
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for ( ;ainfo ; ainfo = ainfo->next) {
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struct nlmsghdr *n = &ainfo->h;
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struct ifaddrmsg *ifa = NLMSG_DATA(n);
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if (n->nlmsg_type != RTM_NEWADDR)
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continue;
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|
|
if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
|
|
return -1;
|
|
|
|
if (ifa->ifa_index != ifindex ||
|
|
(filter.family && filter.family != ifa->ifa_family))
|
|
continue;
|
|
|
|
print_addrinfo(NULL, n, fp);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
|
|
void *arg)
|
|
{
|
|
struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
|
|
struct nlmsg_list *h;
|
|
struct nlmsg_list **lp;
|
|
|
|
h = malloc(n->nlmsg_len+sizeof(void*));
|
|
if (h == NULL)
|
|
return -1;
|
|
|
|
memcpy(&h->h, n, n->nlmsg_len);
|
|
h->next = NULL;
|
|
|
|
for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */;
|
|
*lp = h;
|
|
|
|
ll_remember_index(who, n, NULL);
|
|
return 0;
|
|
}
|
|
|
|
int ipaddr_list_or_flush(int argc, char **argv, int flush)
|
|
{
|
|
struct nlmsg_list *linfo = NULL;
|
|
struct nlmsg_list *ainfo = NULL;
|
|
struct nlmsg_list *l;
|
|
struct rtnl_handle rth;
|
|
char *filter_dev = NULL;
|
|
int no_link = 0;
|
|
|
|
ipaddr_reset_filter(oneline);
|
|
filter.showqueue = 1;
|
|
|
|
if (filter.family == AF_UNSPEC)
|
|
filter.family = preferred_family;
|
|
|
|
if (flush) {
|
|
if (argc <= 0) {
|
|
fprintf(stderr, "Flush requires arguments.\n");
|
|
return -1;
|
|
}
|
|
if (filter.family == AF_PACKET) {
|
|
fprintf(stderr, "Cannot flush link addresses.\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
while (argc > 0) {
|
|
if (strcmp(*argv, "to") == 0) {
|
|
NEXT_ARG();
|
|
get_prefix(&filter.pfx, *argv, filter.family);
|
|
if (filter.family == AF_UNSPEC)
|
|
filter.family = filter.pfx.family;
|
|
} else if (strcmp(*argv, "scope") == 0) {
|
|
int scope = 0;
|
|
NEXT_ARG();
|
|
filter.scopemask = -1;
|
|
if (rtnl_rtscope_a2n(&scope, *argv)) {
|
|
if (strcmp(*argv, "all") != 0)
|
|
invarg("invalid \"scope\"\n", *argv);
|
|
scope = RT_SCOPE_NOWHERE;
|
|
filter.scopemask = 0;
|
|
}
|
|
filter.scope = scope;
|
|
} else if (strcmp(*argv, "up") == 0) {
|
|
filter.up = 1;
|
|
} else if (strcmp(*argv, "dynamic") == 0) {
|
|
filter.flags &= ~IFA_F_PERMANENT;
|
|
filter.flagmask |= IFA_F_PERMANENT;
|
|
} else if (strcmp(*argv, "permanent") == 0) {
|
|
filter.flags |= IFA_F_PERMANENT;
|
|
filter.flagmask |= IFA_F_PERMANENT;
|
|
} else if (strcmp(*argv, "secondary") == 0) {
|
|
filter.flags |= IFA_F_SECONDARY;
|
|
filter.flagmask |= IFA_F_SECONDARY;
|
|
} else if (strcmp(*argv, "primary") == 0) {
|
|
filter.flags &= ~IFA_F_SECONDARY;
|
|
filter.flagmask |= IFA_F_SECONDARY;
|
|
} else if (strcmp(*argv, "tentative") == 0) {
|
|
filter.flags |= IFA_F_TENTATIVE;
|
|
filter.flagmask |= IFA_F_TENTATIVE;
|
|
} else if (strcmp(*argv, "deprecated") == 0) {
|
|
filter.flags |= IFA_F_DEPRECATED;
|
|
filter.flagmask |= IFA_F_DEPRECATED;
|
|
} else if (strcmp(*argv, "label") == 0) {
|
|
NEXT_ARG();
|
|
filter.label = *argv;
|
|
} else {
|
|
if (strcmp(*argv, "dev") == 0) {
|
|
NEXT_ARG();
|
|
}
|
|
if (matches(*argv, "help") == 0)
|
|
usage();
|
|
if (filter_dev)
|
|
duparg2("dev", *argv);
|
|
filter_dev = *argv;
|
|
}
|
|
argv++; argc--;
|
|
}
|
|
|
|
if (rtnl_open(&rth, 0) < 0)
|
|
exit(1);
|
|
|
|
if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) {
|
|
perror("Cannot send dump request");
|
|
exit(1);
|
|
}
|
|
|
|
if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) {
|
|
fprintf(stderr, "Dump terminated\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (filter_dev) {
|
|
filter.ifindex = ll_name_to_index(filter_dev);
|
|
if (filter.ifindex <= 0) {
|
|
fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (flush) {
|
|
int round = 0;
|
|
char flushb[4096-512];
|
|
|
|
filter.flushb = flushb;
|
|
filter.flushp = 0;
|
|
filter.flushe = sizeof(flushb);
|
|
filter.rth = &rth;
|
|
|
|
for (;;) {
|
|
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
|
|
perror("Cannot send dump request");
|
|
exit(1);
|
|
}
|
|
filter.flushed = 0;
|
|
if (rtnl_dump_filter(&rth, print_addrinfo, stdout, NULL, NULL) < 0) {
|
|
fprintf(stderr, "Flush terminated\n");
|
|
exit(1);
|
|
}
|
|
if (filter.flushed == 0) {
|
|
if (round == 0) {
|
|
fprintf(stderr, "Nothing to flush.\n");
|
|
} else if (show_stats)
|
|
printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
|
|
fflush(stdout);
|
|
return 0;
|
|
}
|
|
round++;
|
|
if (flush_update() < 0)
|
|
exit(1);
|
|
if (show_stats) {
|
|
printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed);
|
|
fflush(stdout);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (filter.family != AF_PACKET) {
|
|
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
|
|
perror("Cannot send dump request");
|
|
exit(1);
|
|
}
|
|
|
|
if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) {
|
|
fprintf(stderr, "Dump terminated\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
|
|
if (filter.family && filter.family != AF_PACKET) {
|
|
struct nlmsg_list **lp;
|
|
lp=&linfo;
|
|
|
|
if (filter.oneline)
|
|
no_link = 1;
|
|
|
|
while ((l=*lp)!=NULL) {
|
|
int ok = 0;
|
|
struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
|
|
struct nlmsg_list *a;
|
|
|
|
for (a=ainfo; a; a=a->next) {
|
|
struct nlmsghdr *n = &a->h;
|
|
struct ifaddrmsg *ifa = NLMSG_DATA(n);
|
|
|
|
if (ifa->ifa_index != ifi->ifi_index ||
|
|
(filter.family && filter.family != ifa->ifa_family))
|
|
continue;
|
|
if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
|
|
continue;
|
|
if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
|
|
continue;
|
|
if (filter.pfx.family || filter.label) {
|
|
struct rtattr *tb[IFA_MAX+1];
|
|
parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
|
|
if (!tb[IFA_LOCAL])
|
|
tb[IFA_LOCAL] = tb[IFA_ADDRESS];
|
|
|
|
if (filter.pfx.family && tb[IFA_LOCAL]) {
|
|
inet_prefix dst;
|
|
memset(&dst, 0, sizeof(dst));
|
|
dst.family = ifa->ifa_family;
|
|
memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
|
|
if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
|
|
continue;
|
|
}
|
|
if (filter.label) {
|
|
SPRINT_BUF(b1);
|
|
const char *label;
|
|
if (tb[IFA_LABEL])
|
|
label = RTA_DATA(tb[IFA_LABEL]);
|
|
else
|
|
label = ll_idx_n2a(ifa->ifa_index, b1);
|
|
if (fnmatch(filter.label, label, 0) != 0)
|
|
continue;
|
|
}
|
|
}
|
|
|
|
ok = 1;
|
|
break;
|
|
}
|
|
if (!ok)
|
|
*lp = l->next;
|
|
else
|
|
lp = &l->next;
|
|
}
|
|
}
|
|
|
|
for (l=linfo; l; l = l->next) {
|
|
if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) {
|
|
struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
|
|
if (filter.family != AF_PACKET)
|
|
print_selected_addrinfo(ifi->ifi_index, ainfo, stdout);
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
|
|
exit(0);
|
|
}
|
|
|
|
int ipaddr_list_link(int argc, char **argv)
|
|
{
|
|
preferred_family = AF_PACKET;
|
|
do_link = 1;
|
|
return ipaddr_list_or_flush(argc, argv, 0);
|
|
}
|
|
|
|
void ipaddr_reset_filter(int oneline)
|
|
{
|
|
memset(&filter, 0, sizeof(filter));
|
|
filter.oneline = oneline;
|
|
}
|
|
|
|
int default_scope(inet_prefix *lcl)
|
|
{
|
|
if (lcl->family == AF_INET) {
|
|
if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127)
|
|
return RT_SCOPE_HOST;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ipaddr_modify(int cmd, int argc, char **argv)
|
|
{
|
|
struct rtnl_handle rth;
|
|
struct {
|
|
struct nlmsghdr n;
|
|
struct ifaddrmsg ifa;
|
|
char buf[256];
|
|
} req;
|
|
char *d = NULL;
|
|
char *l = NULL;
|
|
char *lcl_arg = NULL;
|
|
inet_prefix lcl;
|
|
inet_prefix peer;
|
|
int local_len = 0;
|
|
int peer_len = 0;
|
|
int brd_len = 0;
|
|
int any_len = 0;
|
|
int scoped = 0;
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
|
|
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
|
|
req.n.nlmsg_flags = NLM_F_REQUEST;
|
|
req.n.nlmsg_type = cmd;
|
|
req.ifa.ifa_family = preferred_family;
|
|
|
|
while (argc > 0) {
|
|
if (strcmp(*argv, "peer") == 0 ||
|
|
strcmp(*argv, "remote") == 0) {
|
|
NEXT_ARG();
|
|
|
|
if (peer_len)
|
|
duparg("peer", *argv);
|
|
get_prefix(&peer, *argv, req.ifa.ifa_family);
|
|
peer_len = peer.bytelen;
|
|
if (req.ifa.ifa_family == AF_UNSPEC)
|
|
req.ifa.ifa_family = peer.family;
|
|
addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
|
|
req.ifa.ifa_prefixlen = peer.bitlen;
|
|
} else if (matches(*argv, "broadcast") == 0 ||
|
|
strcmp(*argv, "brd") == 0) {
|
|
inet_prefix addr;
|
|
NEXT_ARG();
|
|
if (brd_len)
|
|
duparg("broadcast", *argv);
|
|
if (strcmp(*argv, "+") == 0)
|
|
brd_len = -1;
|
|
else if (strcmp(*argv, "-") == 0)
|
|
brd_len = -2;
|
|
else {
|
|
get_addr(&addr, *argv, req.ifa.ifa_family);
|
|
if (req.ifa.ifa_family == AF_UNSPEC)
|
|
req.ifa.ifa_family = addr.family;
|
|
addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
|
|
brd_len = addr.bytelen;
|
|
}
|
|
} else if (strcmp(*argv, "anycast") == 0) {
|
|
inet_prefix addr;
|
|
NEXT_ARG();
|
|
if (any_len)
|
|
duparg("anycast", *argv);
|
|
get_addr(&addr, *argv, req.ifa.ifa_family);
|
|
if (req.ifa.ifa_family == AF_UNSPEC)
|
|
req.ifa.ifa_family = addr.family;
|
|
addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
|
|
any_len = addr.bytelen;
|
|
} else if (strcmp(*argv, "scope") == 0) {
|
|
int scope = 0;
|
|
NEXT_ARG();
|
|
if (rtnl_rtscope_a2n(&scope, *argv))
|
|
invarg(*argv, "invalid scope value.");
|
|
req.ifa.ifa_scope = scope;
|
|
scoped = 1;
|
|
} else if (strcmp(*argv, "dev") == 0) {
|
|
NEXT_ARG();
|
|
d = *argv;
|
|
} else if (strcmp(*argv, "label") == 0) {
|
|
NEXT_ARG();
|
|
l = *argv;
|
|
addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
|
|
} else {
|
|
if (strcmp(*argv, "local") == 0) {
|
|
NEXT_ARG();
|
|
}
|
|
if (matches(*argv, "help") == 0)
|
|
usage();
|
|
if (local_len)
|
|
duparg2("local", *argv);
|
|
lcl_arg = *argv;
|
|
get_prefix(&lcl, *argv, req.ifa.ifa_family);
|
|
if (req.ifa.ifa_family == AF_UNSPEC)
|
|
req.ifa.ifa_family = lcl.family;
|
|
addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
|
|
local_len = lcl.bytelen;
|
|
}
|
|
argc--; argv++;
|
|
}
|
|
if (d == NULL) {
|
|
fprintf(stderr, "Not enough information: \"dev\" argument is required.\n");
|
|
return -1;
|
|
}
|
|
if (l && matches(d, l) != 0) {
|
|
fprintf(stderr, "\"dev\" (%s) must match \"label\" (%s).\n", d, l);
|
|
exit(1);
|
|
}
|
|
|
|
if (peer_len == 0 && local_len) {
|
|
if (cmd == RTM_DELADDR && lcl.family == AF_INET && !(lcl.flags & PREFIXLEN_SPECIFIED)) {
|
|
fprintf(stderr,
|
|
"Warning: Executing wildcard deletion to stay compatible with old scripts.\n" \
|
|
" Explicitly specify the prefix length (%s/%d) to avoid this warning.\n" \
|
|
" This special behaviour is likely to disappear in further releases,\n" \
|
|
" fix your scripts!\n", lcl_arg, local_len*8);
|
|
} else {
|
|
peer = lcl;
|
|
addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
|
|
}
|
|
}
|
|
if (req.ifa.ifa_prefixlen == 0)
|
|
req.ifa.ifa_prefixlen = lcl.bitlen;
|
|
|
|
if (brd_len < 0 && cmd != RTM_DELADDR) {
|
|
inet_prefix brd;
|
|
int i;
|
|
if (req.ifa.ifa_family != AF_INET) {
|
|
fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n");
|
|
return -1;
|
|
}
|
|
brd = peer;
|
|
if (brd.bitlen <= 30) {
|
|
for (i=31; i>=brd.bitlen; i--) {
|
|
if (brd_len == -1)
|
|
brd.data[0] |= htonl(1<<(31-i));
|
|
else
|
|
brd.data[0] &= ~htonl(1<<(31-i));
|
|
}
|
|
addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
|
|
brd_len = brd.bytelen;
|
|
}
|
|
}
|
|
if (!scoped && cmd != RTM_DELADDR)
|
|
req.ifa.ifa_scope = default_scope(&lcl);
|
|
|
|
if (rtnl_open(&rth, 0) < 0)
|
|
exit(1);
|
|
|
|
ll_init_map(&rth);
|
|
|
|
if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) {
|
|
fprintf(stderr, "Cannot find device \"%s\"\n", d);
|
|
return -1;
|
|
}
|
|
|
|
if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
|
|
exit(2);
|
|
|
|
exit(0);
|
|
}
|
|
|
|
int do_ipaddr(int argc, char **argv)
|
|
{
|
|
if (argc < 1)
|
|
return ipaddr_list_or_flush(0, NULL, 0);
|
|
if (matches(*argv, "add") == 0)
|
|
return ipaddr_modify(RTM_NEWADDR, argc-1, argv+1);
|
|
if (matches(*argv, "delete") == 0)
|
|
return ipaddr_modify(RTM_DELADDR, argc-1, argv+1);
|
|
if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
|
|
|| matches(*argv, "lst") == 0)
|
|
return ipaddr_list_or_flush(argc-1, argv+1, 0);
|
|
if (matches(*argv, "flush") == 0)
|
|
return ipaddr_list_or_flush(argc-1, argv+1, 1);
|
|
if (matches(*argv, "help") == 0)
|
|
usage();
|
|
fprintf(stderr, "Command \"%s\" is unknown, try \"ip address help\".\n", *argv);
|
|
exit(-1);
|
|
}
|
|
|