Only alloc the buffer once.

diff --git a/socket.c b/socket.c
index ecf8f321599eb931c894c04e9c3c5c6a18ad145e..0a9d6d707d6f87c61729ade8f40a7e1449ff1eae 100644 (file)
--- a/socket.c
+++ b/socket.c
@@ -100,7 +100,6 @@ open_socket(struct interface *iface, int protocol)
        if ((s = socket(PF_PACKET, SOCK_DGRAM, htons(protocol))) == -1)
                return -1;
 
-       close_on_exec(s);
        memset(&su, 0, sizeof(su));
        su.sll.sll_family = PF_PACKET;
        su.sll.sll_protocol = htons(protocol);
@@ -129,9 +128,11 @@ open_socket(struct interface *iface, int protocol)
                close(iface->fd);
        iface->fd = s;
        iface->socket_protocol = protocol;
-       iface->buffer_size = BUFFER_LENGTH;
-       iface->buffer = xmalloc(iface->buffer_size);
-       iface->buffer_len = iface->buffer_pos = 0;
+       if (iface->buffer == NULL) {
+               iface->buffer_size = BUFFER_LENGTH;
+               iface->buffer = xmalloc(iface->buffer_size);
+               iface->buffer_len = iface->buffer_pos = 0;
+       }
        return s;
 
 eexit: