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path: root/i/pc104/initrd/conf/busybox/networking/libiproute/ipaddress.c
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Diffstat (limited to 'i/pc104/initrd/conf/busybox/networking/libiproute/ipaddress.c')
-rw-r--r--i/pc104/initrd/conf/busybox/networking/libiproute/ipaddress.c824
1 files changed, 824 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/networking/libiproute/ipaddress.c b/i/pc104/initrd/conf/busybox/networking/libiproute/ipaddress.c
new file mode 100644
index 0000000..bc9963f
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/networking/libiproute/ipaddress.c
@@ -0,0 +1,824 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * ipaddress.c "ip address".
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ *
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ * Changes:
+ * Laszlo Valko <valko@linux.karinthy.hu> 990223: address label must be zero terminated
+ */
+
+#include "libbb.h"
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+
+#include <fnmatch.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <net/if.h>
+#include <net/if_arp.h>
+
+#include "rt_names.h"
+#include "utils.h"
+#include "ip_common.h"
+
+
+static struct
+{
+ int ifindex;
+ int family;
+ int oneline;
+ int showqueue;
+ inet_prefix pfx;
+ int scope, scopemask;
+ int flags, flagmask;
+ int up;
+ char *label;
+ int flushed;
+ char *flushb;
+ int flushp;
+ int flushe;
+ struct rtnl_handle *rth;
+} filter;
+
+static void print_link_flags(FILE *fp, unsigned flags, unsigned mdown)
+{
+ fprintf(fp, "<");
+ flags &= ~IFF_RUNNING;
+#define _PF(f) if (flags&IFF_##f) { \
+ flags &= ~IFF_##f ; \
+ fprintf(fp, #f "%s", flags ? "," : ""); }
+ _PF(LOOPBACK);
+ _PF(BROADCAST);
+ _PF(POINTOPOINT);
+ _PF(MULTICAST);
+ _PF(NOARP);
+#if 0
+ _PF(ALLMULTI);
+ _PF(PROMISC);
+ _PF(MASTER);
+ _PF(SLAVE);
+ _PF(DEBUG);
+ _PF(DYNAMIC);
+ _PF(AUTOMEDIA);
+ _PF(PORTSEL);
+ _PF(NOTRAILERS);
+#endif
+ _PF(UP);
+#undef _PF
+ if (flags)
+ fprintf(fp, "%x", flags);
+ if (mdown)
+ fprintf(fp, ",M-DOWN");
+ fprintf(fp, "> ");
+}
+
+static void print_queuelen(char *name)
+{
+ struct ifreq ifr;
+ int s;
+
+ s = socket(AF_INET, SOCK_STREAM, 0);
+ if (s < 0)
+ return;
+
+ memset(&ifr, 0, sizeof(ifr));
+ strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
+ if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
+ perror("SIOCGIFXQLEN");
+ close(s);
+ return;
+ }
+ close(s);
+
+ if (ifr.ifr_qlen)
+ printf("qlen %d", ifr.ifr_qlen);
+}
+
+static int print_linkinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who,
+ const struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg)
+{
+ FILE *fp = (FILE*)arg;
+ struct ifinfomsg *ifi = NLMSG_DATA(n);
+ struct rtattr * tb[IFLA_MAX+1];
+ int len = n->nlmsg_len;
+ unsigned m_flag = 0;
+
+ if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
+ return 0;
+
+ len -= NLMSG_LENGTH(sizeof(*ifi));
+ if (len < 0)
+ return -1;
+
+ if (filter.ifindex && ifi->ifi_index != filter.ifindex)
+ return 0;
+ if (filter.up && !(ifi->ifi_flags&IFF_UP))
+ return 0;
+
+ memset(tb, 0, sizeof(tb));
+ parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
+ if (tb[IFLA_IFNAME] == NULL) {
+ bb_error_msg("nil ifname");
+ return -1;
+ }
+ if (filter.label &&
+ (!filter.family || filter.family == AF_PACKET) &&
+ fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
+ return 0;
+
+ if (n->nlmsg_type == RTM_DELLINK)
+ fprintf(fp, "Deleted ");
+
+ fprintf(fp, "%d: %s", ifi->ifi_index,
+ tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>");
+
+ if (tb[IFLA_LINK]) {
+ SPRINT_BUF(b1);
+ int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
+ if (iflink == 0)
+ fprintf(fp, "@NONE: ");
+ else {
+ fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
+ m_flag = ll_index_to_flags(iflink);
+ m_flag = !(m_flag & IFF_UP);
+ }
+ } else {
+ fprintf(fp, ": ");
+ }
+ print_link_flags(fp, ifi->ifi_flags, m_flag);
+
+ if (tb[IFLA_MTU])
+ fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
+ if (tb[IFLA_QDISC])
+ fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
+#ifdef IFLA_MASTER
+ if (tb[IFLA_MASTER]) {
+ SPRINT_BUF(b1);
+ fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
+ }
+#endif
+ if (filter.showqueue)
+ print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME]));
+
+ if (!filter.family || filter.family == AF_PACKET) {
+ SPRINT_BUF(b1);
+ fprintf(fp, "%s", _SL_);
+ fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
+
+ if (tb[IFLA_ADDRESS]) {
+ fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
+ RTA_PAYLOAD(tb[IFLA_ADDRESS]),
+ ifi->ifi_type,
+ b1, sizeof(b1)));
+ }
+ if (tb[IFLA_BROADCAST]) {
+ if (ifi->ifi_flags&IFF_POINTOPOINT)
+ fprintf(fp, " peer ");
+ else
+ fprintf(fp, " brd ");
+ fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
+ RTA_PAYLOAD(tb[IFLA_BROADCAST]),
+ ifi->ifi_type,
+ b1, sizeof(b1)));
+ }
+ }
+ fprintf(fp, "\n");
+ fflush(fp);
+ return 0;
+}
+
+static int flush_update(void)
+{
+ if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
+ perror("Failed to send flush request\n");
+ return -1;
+ }
+ filter.flushp = 0;
+ return 0;
+}
+
+static int print_addrinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who,
+ struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg)
+{
+ FILE *fp = (FILE*)arg;
+ struct ifaddrmsg *ifa = NLMSG_DATA(n);
+ int len = n->nlmsg_len;
+ struct rtattr * rta_tb[IFA_MAX+1];
+ char abuf[256];
+ SPRINT_BUF(b1);
+
+ if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
+ return 0;
+ len -= NLMSG_LENGTH(sizeof(*ifa));
+ if (len < 0) {
+ bb_error_msg("wrong nlmsg len %d", len);
+ return -1;
+ }
+
+ if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
+ return 0;
+
+ memset(rta_tb, 0, sizeof(rta_tb));
+ parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
+
+ if (!rta_tb[IFA_LOCAL])
+ rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
+ if (!rta_tb[IFA_ADDRESS])
+ rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
+
+ if (filter.ifindex && filter.ifindex != ifa->ifa_index)
+ return 0;
+ if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
+ return 0;
+ if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
+ return 0;
+ if (filter.label) {
+ const char *label;
+ if (rta_tb[IFA_LABEL])
+ label = RTA_DATA(rta_tb[IFA_LABEL]);
+ else
+ label = ll_idx_n2a(ifa->ifa_index, b1);
+ if (fnmatch(filter.label, label, 0) != 0)
+ return 0;
+ }
+ if (filter.pfx.family) {
+ if (rta_tb[IFA_LOCAL]) {
+ inet_prefix dst;
+ memset(&dst, 0, sizeof(dst));
+ dst.family = ifa->ifa_family;
+ memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
+ if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
+ return 0;
+ }
+ }
+
+ if (filter.flushb) {
+ struct nlmsghdr *fn;
+ if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
+ if (flush_update())
+ return -1;
+ }
+ fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
+ memcpy(fn, n, n->nlmsg_len);
+ fn->nlmsg_type = RTM_DELADDR;
+ fn->nlmsg_flags = NLM_F_REQUEST;
+ fn->nlmsg_seq = ++filter.rth->seq;
+ filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
+ filter.flushed++;
+ return 0;
+ }
+
+ if (n->nlmsg_type == RTM_DELADDR)
+ fprintf(fp, "Deleted ");
+
+ if (filter.oneline)
+ fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
+ if (ifa->ifa_family == AF_INET)
+ fprintf(fp, " inet ");
+ else if (ifa->ifa_family == AF_INET6)
+ fprintf(fp, " inet6 ");
+ else
+ fprintf(fp, " family %d ", ifa->ifa_family);
+
+ if (rta_tb[IFA_LOCAL]) {
+ fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family,
+ RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
+ RTA_DATA(rta_tb[IFA_LOCAL]),
+ abuf, sizeof(abuf)));
+
+ if (rta_tb[IFA_ADDRESS] == NULL ||
+ memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) {
+ fprintf(fp, "/%d ", ifa->ifa_prefixlen);
+ } else {
+ fprintf(fp, " peer %s/%d ",
+ rt_addr_n2a(ifa->ifa_family,
+ RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
+ RTA_DATA(rta_tb[IFA_ADDRESS]),
+ abuf, sizeof(abuf)),
+ ifa->ifa_prefixlen);
+ }
+ }
+
+ if (rta_tb[IFA_BROADCAST]) {
+ fprintf(fp, "brd %s ",
+ rt_addr_n2a(ifa->ifa_family,
+ RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
+ RTA_DATA(rta_tb[IFA_BROADCAST]),
+ abuf, sizeof(abuf)));
+ }
+ if (rta_tb[IFA_ANYCAST]) {
+ fprintf(fp, "any %s ",
+ rt_addr_n2a(ifa->ifa_family,
+ RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
+ RTA_DATA(rta_tb[IFA_ANYCAST]),
+ abuf, sizeof(abuf)));
+ }
+ fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
+ if (ifa->ifa_flags&IFA_F_SECONDARY) {
+ ifa->ifa_flags &= ~IFA_F_SECONDARY;
+ fprintf(fp, "secondary ");
+ }
+ if (ifa->ifa_flags&IFA_F_TENTATIVE) {
+ ifa->ifa_flags &= ~IFA_F_TENTATIVE;
+ fprintf(fp, "tentative ");
+ }
+ if (ifa->ifa_flags&IFA_F_DEPRECATED) {
+ ifa->ifa_flags &= ~IFA_F_DEPRECATED;
+ fprintf(fp, "deprecated ");
+ }
+ if (!(ifa->ifa_flags&IFA_F_PERMANENT)) {
+ fprintf(fp, "dynamic ");
+ } else
+ ifa->ifa_flags &= ~IFA_F_PERMANENT;
+ if (ifa->ifa_flags)
+ fprintf(fp, "flags %02x ", ifa->ifa_flags);
+ if (rta_tb[IFA_LABEL])
+ fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL]));
+ if (rta_tb[IFA_CACHEINFO]) {
+ struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
+ char buf[128];
+ fprintf(fp, "%s", _SL_);
+ if (ci->ifa_valid == 0xFFFFFFFFU)
+ sprintf(buf, "valid_lft forever");
+ else
+ sprintf(buf, "valid_lft %dsec", ci->ifa_valid);
+ if (ci->ifa_prefered == 0xFFFFFFFFU)
+ sprintf(buf+strlen(buf), " preferred_lft forever");
+ else
+ sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered);
+ fprintf(fp, " %s", buf);
+ }
+ fprintf(fp, "\n");
+ fflush(fp);
+ return 0;
+}
+
+
+struct nlmsg_list
+{
+ struct nlmsg_list *next;
+ struct nlmsghdr h;
+};
+
+static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
+{
+ for ( ;ainfo ; ainfo = ainfo->next) {
+ struct nlmsghdr *n = &ainfo->h;
+ struct ifaddrmsg *ifa = NLMSG_DATA(n);
+
+ if (n->nlmsg_type != RTM_NEWADDR)
+ continue;
+
+ 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(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;
+}
+
+static void ipaddr_reset_filter(int _oneline)
+{
+ memset(&filter, 0, sizeof(filter));
+ filter.oneline = _oneline;
+}
+
+int ipaddr_list_or_flush(int argc, char **argv, int flush)
+{
+ static const char *const option[] = { "to", "scope", "up", "label", "dev", 0 };
+
+ 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) {
+ bb_error_msg(bb_msg_requires_arg, "flush");
+ return -1;
+ }
+ if (filter.family == AF_PACKET) {
+ bb_error_msg("cannot flush link addresses");
+ return -1;
+ }
+ }
+
+ while (argc > 0) {
+ const int option_num = index_in_str_array(option, *argv);
+ switch (option_num) {
+ case 0: /* to */
+ NEXT_ARG();
+ get_prefix(&filter.pfx, *argv, filter.family);
+ if (filter.family == AF_UNSPEC) {
+ filter.family = filter.pfx.family;
+ }
+ break;
+ case 1: /* scope */
+ {
+ uint32_t scope = 0;
+ NEXT_ARG();
+ filter.scopemask = -1;
+ if (rtnl_rtscope_a2n(&scope, *argv)) {
+ if (strcmp(*argv, "all") != 0) {
+ invarg(*argv, "scope");
+ }
+ scope = RT_SCOPE_NOWHERE;
+ filter.scopemask = 0;
+ }
+ filter.scope = scope;
+ break;
+ }
+ case 2: /* up */
+ filter.up = 1;
+ break;
+ case 3: /* label */
+ NEXT_ARG();
+ filter.label = *argv;
+ break;
+ case 4: /* dev */
+ NEXT_ARG();
+ default:
+ 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) {
+ bb_perror_msg_and_die("cannot send dump request");
+ }
+
+ if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) {
+ bb_error_msg_and_die("dump terminated");
+ }
+
+ if (filter_dev) {
+ filter.ifindex = ll_name_to_index(filter_dev);
+ if (filter.ifindex <= 0) {
+ bb_error_msg("device \"%s\" does not exist", filter_dev);
+ return -1;
+ }
+ }
+
+ if (flush) {
+ 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) {
+ fflush(stdout);
+ return 0;
+ }
+ if (flush_update() < 0)
+ exit(1);
+ }
+ }
+
+ if (filter.family != AF_PACKET) {
+ if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
+ bb_perror_msg_and_die("cannot send dump request");
+ }
+
+ if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) {
+ bb_error_msg_and_die("dump terminated");
+ }
+ }
+
+
+ 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];
+ memset(tb, 0, sizeof(tb));
+ 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);
+}
+
+static int default_scope(inet_prefix *lcl)
+{
+ if (lcl->family == AF_INET) {
+ if (lcl->bytelen >= 1 && *(uint8_t*)&lcl->data == 127)
+ return RT_SCOPE_HOST;
+ }
+ return 0;
+}
+
+static int ipaddr_modify(int cmd, int argc, char **argv)
+{
+ static const char *const option[] = {
+ "peer", "remote", "broadcast", "brd",
+ "anycast", "scope", "dev", "label", "local", 0
+ };
+
+ struct rtnl_handle rth;
+ struct {
+ struct nlmsghdr n;
+ struct ifaddrmsg ifa;
+ char buf[256];
+ } req;
+ char *d = NULL;
+ char *l = 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) {
+ const int option_num = index_in_str_array(option, *argv);
+ switch (option_num) {
+ case 0: /* peer */
+ case 1: /* remote */
+ 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;
+ break;
+ case 2: /* broadcast */
+ case 3: /* brd */
+ {
+ inet_prefix addr;
+ NEXT_ARG();
+ if (brd_len) {
+ duparg("broadcast", *argv);
+ }
+ if (LONE_CHAR(*argv, '+')) {
+ brd_len = -1;
+ }
+ else if (LONE_DASH(*argv)) {
+ 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;
+ }
+ break;
+ }
+ case 4: /* anycast */
+ {
+ 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;
+ break;
+ }
+ case 5: /* scope */
+ {
+ uint32_t scope = 0;
+ NEXT_ARG();
+ if (rtnl_rtscope_a2n(&scope, *argv)) {
+ invarg(*argv, "scope");
+ }
+ req.ifa.ifa_scope = scope;
+ scoped = 1;
+ break;
+ }
+ case 6: /* dev */
+ NEXT_ARG();
+ d = *argv;
+ break;
+ case 7: /* label */
+ NEXT_ARG();
+ l = *argv;
+ addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
+ break;
+ case 8: /* local */
+ NEXT_ARG();
+ default:
+ if (local_len) {
+ duparg2("local", *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) {
+ bb_error_msg(bb_msg_requires_arg,"\"dev\"");
+ return -1;
+ }
+ if (l && matches(d, l) != 0) {
+ bb_error_msg_and_die("\"dev\" (%s) must match \"label\" (%s)", d, l);
+ }
+
+ if (peer_len == 0 && local_len && cmd != RTM_DELADDR) {
+ 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) {
+ bb_error_msg("broadcast can be set only for IPv4 addresses");
+ 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) {
+ bb_error_msg("cannot find device \"%s\"", 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)
+{
+ static const char *const commands[] = {
+ "add", "delete", "list", "show", "lst", "flush", 0
+ };
+
+ int command_num = 2;
+
+ if (*argv) {
+ command_num = index_in_substr_array(commands, *argv);
+ }
+ switch (command_num) {
+ case 0: /* add */
+ return ipaddr_modify(RTM_NEWADDR, argc-1, argv+1);
+ case 1: /* delete */
+ return ipaddr_modify(RTM_DELADDR, argc-1, argv+1);
+ case 2: /* list */
+ case 3: /* show */
+ case 4: /* lst */
+ return ipaddr_list_or_flush(argc-1, argv+1, 0);
+ case 5: /* flush */
+ return ipaddr_list_or_flush(argc-1, argv+1, 1);
+ }
+ bb_error_msg_and_die("unknown command %s", *argv);
+}