+/* vi: set sw=4 ts=4: */
/*
* ipaddress.c "ip address".
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
* Laszlo Valko <valko@linux.karinthy.hu> 990223: address label must be zero terminated
*/
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-
#include <fnmatch.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <arpa/inet.h>
-
#include <net/if.h>
#include <net/if_arp.h>
+#include "ip_common.h" /* #include "libbb.h" is inside */
#include "rt_names.h"
#include "utils.h"
-#include "ip_common.h"
-#include "libbb.h"
+#ifndef IFF_LOWER_UP
+/* from linux/if.h */
+#define IFF_LOWER_UP 0x10000 /* driver signals L1 up*/
+#endif
-static struct
-{
- int ifindex;
- int family;
- int oneline;
- int showqueue;
- inet_prefix pfx;
- int scope, scopemask;
- int flags, flagmask;
- int up;
+struct filter_t {
char *label;
- int flushed;
char *flushb;
+ struct rtnl_handle *rth;
+ int scope, scopemask;
+ int flags, flagmask;
int flushp;
int flushe;
- struct rtnl_handle *rth;
-} filter;
+ int ifindex;
+ family_t family;
+ smallint showqueue;
+ smallint oneline;
+ smallint up;
+ smallint flushed;
+ inet_prefix pfx;
+} FIX_ALIASING;
+typedef struct filter_t filter_t;
-static void print_link_flags(FILE *fp, unsigned flags, unsigned mdown)
+#define G_filter (*(filter_t*)&bb_common_bufsiz1)
+
+
+static void print_link_flags(unsigned flags, unsigned mdown)
{
- fprintf(fp, "<");
+ static const int flag_masks[] = {
+ IFF_LOOPBACK, IFF_BROADCAST, IFF_POINTOPOINT,
+ IFF_MULTICAST, IFF_NOARP, IFF_UP, IFF_LOWER_UP };
+ static const char flag_labels[] ALIGN1 =
+ "LOOPBACK\0""BROADCAST\0""POINTOPOINT\0"
+ "MULTICAST\0""NOARP\0""UP\0""LOWER_UP\0";
+
+ bb_putchar('<');
+ if (flags & IFF_UP && !(flags & IFF_RUNNING))
+ printf("NO-CARRIER,");
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(PORTSEL);
_PF(NOTRAILERS);
#endif
- _PF(UP);
-#undef _PF
+ flags = print_flags_separated(flag_masks, flag_labels, flags, ",");
if (flags)
- fprintf(fp, "%x", flags);
+ printf("%x", flags);
if (mdown)
- fprintf(fp, ",M-DOWN");
- fprintf(fp, "> ");
+ printf(",M-DOWN");
+ printf("> ");
}
static void print_queuelen(char *name)
return;
memset(&ifr, 0, sizeof(ifr));
- strcpy(ifr.ifr_name, name);
- if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
- perror("SIOCGIFXQLEN");
+ strncpy_IFNAMSIZ(ifr.ifr_name, name);
+ if (ioctl_or_warn(s, SIOCGIFTXQLEN, &ifr) < 0) {
close(s);
return;
}
printf("qlen %d", ifr.ifr_qlen);
}
-static int print_linkinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who,
- struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg)
+static NOINLINE int print_linkinfo(const struct nlmsghdr *n)
{
- FILE *fp = (FILE*)arg;
struct ifinfomsg *ifi = NLMSG_DATA(n);
- struct rtattr * tb[IFLA_MAX+1];
+ 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;
if (len < 0)
return -1;
- if (filter.ifindex && ifi->ifi_index != filter.ifindex)
+ if (G_filter.ifindex && ifi->ifi_index != G_filter.ifindex)
return 0;
- if (filter.up && !(ifi->ifi_flags&IFF_UP))
+ if (G_filter.up && !(ifi->ifi_flags & IFF_UP))
return 0;
memset(tb, 0, sizeof(tb));
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))
+ if (G_filter.label
+ && (!G_filter.family || G_filter.family == AF_PACKET)
+ && fnmatch(G_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);
+ printf("Deleted ");
+
+ printf("%d: %s", ifi->ifi_index,
+ /*tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>" - we checked tb[IFLA_IFNAME] above*/
+ (char*)RTA_DATA(tb[IFLA_IFNAME])
+ );
+
+ {
+ unsigned m_flag = 0;
+ if (tb[IFLA_LINK]) {
+ SPRINT_BUF(b1);
+ int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
+ if (iflink == 0)
+ printf("@NONE: ");
+ else {
+ printf("@%s: ", ll_idx_n2a(iflink, b1));
+ m_flag = ll_index_to_flags(iflink);
+ m_flag = !(m_flag & IFF_UP);
+ }
+ } else {
+ printf(": ");
}
- } else {
- fprintf(fp, ": ");
+ print_link_flags(ifi->ifi_flags, m_flag);
}
- print_link_flags(fp, ifi->ifi_flags, m_flag);
if (tb[IFLA_MTU])
- fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
+ printf("mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
if (tb[IFLA_QDISC])
- fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
+ printf("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));
+ printf("master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
}
#endif
- if (filter.showqueue)
+ if (tb[IFLA_OPERSTATE]) {
+ static const char operstate_labels[] ALIGN1 =
+ "UNKNOWN\0""NOTPRESENT\0""DOWN\0""LOWERLAYERDOWN\0"
+ "TESTING\0""DORMANT\0""UP\0";
+ printf("state %s ", nth_string(operstate_labels,
+ *(uint8_t *)RTA_DATA(tb[IFLA_OPERSTATE])));
+ }
+ if (G_filter.showqueue)
print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME]));
- if (!filter.family || filter.family == AF_PACKET) {
+ if (!G_filter.family || G_filter.family == AF_PACKET) {
SPRINT_BUF(b1);
- fprintf(fp, "%s", _SL_);
- fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
+ printf("%c link/%s ", _SL_, ll_type_n2a(ifi->ifi_type, b1));
if (tb[IFLA_ADDRESS]) {
- fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
+ fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
RTA_PAYLOAD(tb[IFLA_ADDRESS]),
ifi->ifi_type,
- b1, sizeof(b1)));
+ b1, sizeof(b1)), stdout);
}
if (tb[IFLA_BROADCAST]) {
- if (ifi->ifi_flags&IFF_POINTOPOINT)
- fprintf(fp, " peer ");
+ if (ifi->ifi_flags & IFF_POINTOPOINT)
+ printf(" peer ");
else
- fprintf(fp, " brd ");
- fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
+ printf(" brd ");
+ fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
RTA_PAYLOAD(tb[IFLA_BROADCAST]),
ifi->ifi_type,
- b1, sizeof(b1)));
+ b1, sizeof(b1)), stdout);
}
}
- fprintf(fp, "\n");
- fflush(fp);
+ bb_putchar('\n');
+ /*fflush_all();*/
return 0;
}
static int flush_update(void)
{
- if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
- perror("Failed to send flush request\n");
+ if (rtnl_send(G_filter.rth, G_filter.flushb, G_filter.flushp) < 0) {
+ bb_perror_msg("can't send flush request");
return -1;
}
- filter.flushp = 0;
+ G_filter.flushp = 0;
return 0;
}
-static int print_addrinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who,
- struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg)
+static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
+ struct nlmsghdr *n, void *arg UNUSED_PARAM)
{
- FILE *fp = (FILE*)arg;
struct ifaddrmsg *ifa = NLMSG_DATA(n);
int len = n->nlmsg_len;
struct rtattr * rta_tb[IFA_MAX+1];
return -1;
}
- if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
+ if (G_filter.flushb && n->nlmsg_type != RTM_NEWADDR)
return 0;
memset(rta_tb, 0, sizeof(rta_tb));
if (!rta_tb[IFA_ADDRESS])
rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
- if (filter.ifindex && filter.ifindex != ifa->ifa_index)
+ if (G_filter.ifindex && G_filter.ifindex != ifa->ifa_index)
return 0;
- if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
+ if ((G_filter.scope ^ ifa->ifa_scope) & G_filter.scopemask)
return 0;
- if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
+ if ((G_filter.flags ^ ifa->ifa_flags) & G_filter.flagmask)
return 0;
- if (filter.label) {
+ if (G_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)
+ if (fnmatch(G_filter.label, label, 0) != 0)
return 0;
}
- if (filter.pfx.family) {
+ if (G_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))
+ if (inet_addr_match(&dst, &G_filter.pfx, G_filter.pfx.bitlen))
return 0;
}
}
- if (filter.flushb) {
+ if (G_filter.flushb) {
struct nlmsghdr *fn;
- if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
+ if (NLMSG_ALIGN(G_filter.flushp) + n->nlmsg_len > G_filter.flushe) {
if (flush_update())
return -1;
}
- fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
+ fn = (struct nlmsghdr*)(G_filter.flushb + NLMSG_ALIGN(G_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++;
+ fn->nlmsg_seq = ++G_filter.rth->seq;
+ G_filter.flushp = (((char*)fn) + n->nlmsg_len) - G_filter.flushb;
+ G_filter.flushed = 1;
return 0;
}
if (n->nlmsg_type == RTM_DELADDR)
- fprintf(fp, "Deleted ");
+ printf("Deleted ");
- if (filter.oneline)
- fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
+ if (G_filter.oneline)
+ printf("%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
if (ifa->ifa_family == AF_INET)
- fprintf(fp, " inet ");
+ printf(" inet ");
else if (ifa->ifa_family == AF_INET6)
- fprintf(fp, " inet6 ");
+ printf(" inet6 ");
else
- fprintf(fp, " family %d ", ifa->ifa_family);
+ printf(" 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]),
+ fputs(rt_addr_n2a(ifa->ifa_family,
RTA_DATA(rta_tb[IFA_LOCAL]),
- abuf, sizeof(abuf)));
+ abuf, sizeof(abuf)), stdout);
- 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);
+ if (rta_tb[IFA_ADDRESS] == NULL
+ || memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0
+ ) {
+ printf("/%d ", ifa->ifa_prefixlen);
} else {
- fprintf(fp, " peer %s/%d ",
+ printf(" 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 ",
+ printf("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 ",
+ printf("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) {
+ printf("scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1));
+ if (ifa->ifa_flags & IFA_F_SECONDARY) {
ifa->ifa_flags &= ~IFA_F_SECONDARY;
- fprintf(fp, "secondary ");
+ printf("secondary ");
}
- if (ifa->ifa_flags&IFA_F_TENTATIVE) {
+ if (ifa->ifa_flags & IFA_F_TENTATIVE) {
ifa->ifa_flags &= ~IFA_F_TENTATIVE;
- fprintf(fp, "tentative ");
+ printf("tentative ");
}
- if (ifa->ifa_flags&IFA_F_DEPRECATED) {
+ if (ifa->ifa_flags & IFA_F_DEPRECATED) {
ifa->ifa_flags &= ~IFA_F_DEPRECATED;
- fprintf(fp, "deprecated ");
+ printf("deprecated ");
}
- if (!(ifa->ifa_flags&IFA_F_PERMANENT)) {
- fprintf(fp, "dynamic ");
+ if (!(ifa->ifa_flags & IFA_F_PERMANENT)) {
+ printf("dynamic ");
} else
ifa->ifa_flags &= ~IFA_F_PERMANENT;
if (ifa->ifa_flags)
- fprintf(fp, "flags %02x ", ifa->ifa_flags);
+ printf("flags %02x ", ifa->ifa_flags);
if (rta_tb[IFA_LABEL])
- fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL]));
+ fputs((char*)RTA_DATA(rta_tb[IFA_LABEL]), stdout);
if (rta_tb[IFA_CACHEINFO]) {
struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
char buf[128];
- fprintf(fp, "%s", _SL_);
+ bb_putchar(_SL_);
if (ci->ifa_valid == 0xFFFFFFFFU)
sprintf(buf, "valid_lft forever");
else
sprintf(buf+strlen(buf), " preferred_lft forever");
else
sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered);
- fprintf(fp, " %s", buf);
+ printf(" %s", buf);
}
- fprintf(fp, "\n");
- fflush(fp);
+ bb_putchar('\n');
+ /*fflush_all();*/
return 0;
}
-struct nlmsg_list
-{
+struct nlmsg_list {
struct nlmsg_list *next;
struct nlmsghdr h;
};
-static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
+static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo)
{
- for ( ;ainfo ; ainfo = ainfo->next) {
+ 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))
+ if (ifa->ifa_index != ifindex
+ || (G_filter.family && G_filter.family != ifa->ifa_family)
+ ) {
continue;
-
- print_addrinfo(NULL, n, fp);
+ }
+ print_addrinfo(NULL, n, NULL);
}
return 0;
}
-static int store_nlmsg(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+static int FAST_FUNC 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;
+ h = xzalloc(n->nlmsg_len + sizeof(void*));
memcpy(&h->h, n, n->nlmsg_len);
- h->next = NULL;
+ /*h->next = NULL; - xzalloc did it */
- for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */;
+ for (lp = linfo; *lp; lp = &(*lp)->next)
+ continue;
*lp = h;
ll_remember_index(who, n, NULL);
static void ipaddr_reset_filter(int _oneline)
{
- memset(&filter, 0, sizeof(filter));
- filter.oneline = _oneline;
+ memset(&G_filter, 0, sizeof(G_filter));
+ G_filter.oneline = _oneline;
}
-int ipaddr_list_or_flush(int argc, char **argv, int flush)
+/* Return value becomes exitcode. It's okay to not return at all */
+int FAST_FUNC ipaddr_list_or_flush(char **argv, int flush)
{
- static const char *const option[] = { "to", "scope", "up", "label", "dev", 0 };
+ static const char option[] ALIGN1 = "to\0""scope\0""up\0""label\0""dev\0";
struct nlmsg_list *linfo = NULL;
struct nlmsg_list *ainfo = NULL;
int no_link = 0;
ipaddr_reset_filter(oneline);
- filter.showqueue = 1;
+ G_filter.showqueue = 1;
- if (filter.family == AF_UNSPEC)
- filter.family = preferred_family;
+ if (G_filter.family == AF_UNSPEC)
+ G_filter.family = preferred_family;
if (flush) {
- if (argc <= 0) {
- fprintf(stderr, "Flush requires arguments.\n");
- return -1;
+ if (!*argv) {
+ bb_error_msg_and_die(bb_msg_requires_arg, "flush");
}
- if (filter.family == AF_PACKET) {
- fprintf(stderr, "Cannot flush link addresses.\n");
- return -1;
+ if (G_filter.family == AF_PACKET) {
+ bb_error_msg_and_die("can't flush link addresses");
}
}
- while (argc > 0) {
- const int option_num = compare_string_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("invalid \"scope\"\n", *argv);
- }
- scope = RT_SCOPE_NOWHERE;
- filter.scopemask = 0;
+ while (*argv) {
+ const smalluint key = index_in_strings(option, *argv);
+ if (key == 0) { /* to */
+ NEXT_ARG();
+ get_prefix(&G_filter.pfx, *argv, G_filter.family);
+ if (G_filter.family == AF_UNSPEC) {
+ G_filter.family = G_filter.pfx.family;
+ }
+ } else if (key == 1) { /* scope */
+ uint32_t scope = 0;
+ NEXT_ARG();
+ G_filter.scopemask = -1;
+ if (rtnl_rtscope_a2n(&scope, *argv)) {
+ if (strcmp(*argv, "all") != 0) {
+ invarg(*argv, "scope");
}
- filter.scope = scope;
- break;
+ scope = RT_SCOPE_NOWHERE;
+ G_filter.scopemask = 0;
}
- case 2: /* up */
- filter.up = 1;
- break;
- case 3: /* label */
- NEXT_ARG();
- filter.label = *argv;
- break;
- case 4: /* dev */
+ G_filter.scope = scope;
+ } else if (key == 2) { /* up */
+ G_filter.up = 1;
+ } else if (key == 3) { /* label */
+ NEXT_ARG();
+ G_filter.label = *argv;
+ } else {
+ if (key == 4) /* dev */
NEXT_ARG();
- default:
- if (filter_dev) {
- duparg2("dev", *argv);
- }
- filter_dev = *argv;
+ 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");
- }
+ xrtnl_open(&rth);
- if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) {
- bb_error_msg_and_die("Dump terminated");
- }
+ xrtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK);
+ xrtnl_dump_filter(&rth, store_nlmsg, &linfo);
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;
- }
+ G_filter.ifindex = xll_name_to_index(filter_dev);
}
if (flush) {
char flushb[4096-512];
- filter.flushb = flushb;
- filter.flushp = 0;
- filter.flushe = sizeof(flushb);
- filter.rth = &rth;
+ G_filter.flushb = flushb;
+ G_filter.flushp = 0;
+ G_filter.flushe = sizeof(flushb);
+ G_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);
+ xrtnl_wilddump_request(&rth, G_filter.family, RTM_GETADDR);
+ G_filter.flushed = 0;
+ xrtnl_dump_filter(&rth, print_addrinfo, NULL);
+ if (G_filter.flushed == 0) {
return 0;
}
- if (flush_update() < 0)
- exit(1);
+ if (flush_update() < 0) {
+ return 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 (G_filter.family != AF_PACKET) {
+ xrtnl_wilddump_request(&rth, G_filter.family, RTM_GETADDR);
+ xrtnl_dump_filter(&rth, store_nlmsg, &ainfo);
}
- if (filter.family && filter.family != AF_PACKET) {
+ if (G_filter.family && G_filter.family != AF_PACKET) {
struct nlmsg_list **lp;
- lp=&linfo;
+ lp = &linfo;
- if (filter.oneline)
+ if (G_filter.oneline)
no_link = 1;
- while ((l=*lp)!=NULL) {
+ 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) {
+ 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))
+ if (ifa->ifa_index != ifi->ifi_index
+ || (G_filter.family && G_filter.family != ifa->ifa_family)
+ ) {
continue;
- if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
+ }
+ if ((G_filter.scope ^ ifa->ifa_scope) & G_filter.scopemask)
continue;
- if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
+ if ((G_filter.flags ^ ifa->ifa_flags) & G_filter.flagmask)
continue;
- if (filter.pfx.family || filter.label) {
+ if (G_filter.pfx.family || G_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]) {
+ if (G_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))
+ if (inet_addr_match(&dst, &G_filter.pfx, G_filter.pfx.bitlen))
continue;
}
- if (filter.label) {
+ if (G_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)
+ if (fnmatch(G_filter.label, label, 0) != 0)
continue;
}
}
}
}
- for (l=linfo; l; l = l->next) {
- if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) {
+ for (l = linfo; l; l = l->next) {
+ if (no_link || print_linkinfo(&l->h) == 0) {
struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
- if (filter.family != AF_PACKET)
- print_selected_addrinfo(ifi->ifi_index, ainfo, stdout);
+ if (G_filter.family != AF_PACKET)
+ print_selected_addrinfo(ifi->ifi_index, ainfo);
}
- fflush(stdout);
}
- exit(0);
+ return 0;
}
static int default_scope(inet_prefix *lcl)
{
if (lcl->family == AF_INET) {
- if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127)
+ 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)
+/* Return value becomes exitcode. It's okay to not return at all */
+static int ipaddr_modify(int cmd, char **argv)
{
- static const char *const option[] = {
- "peer", "remote", "broadcast", "brd",
- "anycast", "scope", "dev", "label", "local", 0
- };
-
+ static const char option[] ALIGN1 =
+ "peer\0""remote\0""broadcast\0""brd\0"
+ "anycast\0""scope\0""dev\0""label\0""local\0";
struct rtnl_handle rth;
struct {
- struct nlmsghdr n;
- struct ifaddrmsg ifa;
- char buf[256];
+ struct nlmsghdr n;
+ struct ifaddrmsg ifa;
+ char buf[256];
} req;
- char *d = NULL;
- char *l = NULL;
+ 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;
+ bool scoped = 0;
memset(&req, 0, sizeof(req));
req.n.nlmsg_type = cmd;
req.ifa.ifa_family = preferred_family;
- while (argc > 0) {
- const int option_num = compare_string_array(option, *argv);
- switch (option_num) {
- case 0: /* peer */
- case 1: /* remote */
- NEXT_ARG();
+ while (*argv) {
+ const smalluint arg = index_in_strings(option, *argv);
+ if (arg <= 1) { /* peer, 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 (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;
- }
- break;
+ if (peer_len) {
+ duparg("peer", *argv);
}
- case 4: /* anycast */
- {
- inet_prefix addr;
- NEXT_ARG();
- if (any_len) {
- duparg("anycast", *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 (arg <= 3) { /* broadcast, 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) {
+ 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;
+ addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
+ brd_len = addr.bytelen;
}
- case 5: /* scope */
- {
- uint32_t scope = 0;
- NEXT_ARG();
- if (rtnl_rtscope_a2n(&scope, *argv)) {
- invarg(*argv, "invalid scope value");
- }
- req.ifa.ifa_scope = scope;
- scoped = 1;
- break;
+ } else if (arg == 4) { /* anycast */
+ inet_prefix addr;
+ NEXT_ARG();
+ if (any_len) {
+ duparg("anycast", *argv);
}
- 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 */
+ 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 (arg == 5) { /* scope */
+ uint32_t scope = 0;
+ NEXT_ARG();
+ if (rtnl_rtscope_a2n(&scope, *argv)) {
+ invarg(*argv, "scope");
+ }
+ req.ifa.ifa_scope = scope;
+ scoped = 1;
+ } else if (arg == 6) { /* dev */
+ NEXT_ARG();
+ d = *argv;
+ } else if (arg == 7) { /* label */
+ NEXT_ARG();
+ l = *argv;
+ addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l) + 1);
+ } else {
+ if (arg == 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;
+ 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("Not enough information: \"dev\" argument is required");
- return -1;
+ if (!d) {
+ /* There was no "dev IFACE", but we need that */
+ bb_error_msg_and_die("need \"dev IFACE\"");
}
- if (l && matches(d, l) != 0) {
+ if (l && strncmp(d, l, strlen(d)) != 0) {
bb_error_msg_and_die("\"dev\" (%s) must match \"label\" (%s)", d, l);
}
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;
+ bb_error_msg_and_die("broadcast can be set only for IPv4 addresses");
}
brd = peer;
if (brd.bitlen <= 30) {
if (!scoped && cmd != RTM_DELADDR)
req.ifa.ifa_scope = default_scope(&lcl);
- if (rtnl_open(&rth, 0) < 0)
- exit(1);
+ xrtnl_open(&rth);
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;
- }
+ req.ifa.ifa_index = xll_name_to_index(d);
if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
- exit(2);
+ return 2;
- exit(0);
+ return 0;
}
-int do_ipaddr(int argc, char **argv)
+/* Return value becomes exitcode. It's okay to not return at all */
+int FAST_FUNC do_ipaddr(char **argv)
{
- static const char *const commands[] = {
- "add", "delete", "list", "show", "lst", "flush", 0
- };
-
- int command_num = 2;
-
+ static const char commands[] ALIGN1 =
+ "add\0""delete\0""list\0""show\0""lst\0""flush\0";
+ smalluint cmd = 2;
if (*argv) {
- command_num = compare_string_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);
+ cmd = index_in_substrings(commands, *argv);
+ if (cmd > 5)
+ bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
+ argv++;
+ if (cmd <= 1)
+ return ipaddr_modify((cmd == 0) ? RTM_NEWADDR : RTM_DELADDR, argv);
+ }
+ /* 2 == list, 3 == show, 4 == lst */
+ return ipaddr_list_or_flush(argv, cmd == 5);
}
projects / oweals / busybox.git / blobdiff