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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2008-12-10 11:12:16 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2008-12-10 11:12:16 +0000
commite53738558f2f1aa8cd536545479ab98b0df808c5 (patch)
tree187265ed8377d2eee805dc7cc6b9150774804805 /libbb/xconnect.c
parent0d94820adf87b752c338c194a7291dcf1b96fc76 (diff)
downloadbusybox-e53738558f2f1aa8cd536545479ab98b0df808c5.tar.gz
busybox-e53738558f2f1aa8cd536545479ab98b0df808c5.tar.bz2
*: fix SO_BINDTODEVICE. Kernel wants at least IFNAMSIZ bytes there.
Diffstat (limited to 'libbb/xconnect.c')
-rw-r--r--libbb/xconnect.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/libbb/xconnect.c b/libbb/xconnect.c
index 5be83241b..d078e9811 100644
--- a/libbb/xconnect.c
+++ b/libbb/xconnect.c
@@ -8,6 +8,7 @@
*/
#include <netinet/in.h>
+#include <net/if.h>
#include "libbb.h"
void FAST_FUNC setsockopt_reuseaddr(int fd)
@@ -18,6 +19,20 @@ int FAST_FUNC setsockopt_broadcast(int fd)
{
return setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &const_int_1, sizeof(const_int_1));
}
+int FAST_FUNC setsockopt_bindtodevice(int fd, const char *iface)
+{
+ int r;
+ struct ifreq ifr;
+ strncpy_IFNAMSIZ(ifr.ifr_name, iface);
+ /* Actually, ifr_name is at offset 0, and in practice
+ * just giving char[IFNAMSIZ] instead of struct ifreq works too.
+ * But just in case it's not true on some obscure arch... */
+ r = setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr));
+ if (r)
+ bb_perror_msg("can't bind to interface %s", iface);
+ return r;
+}
+
void FAST_FUNC xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen)
{