From 031d09b47912b2401f4934667c0b6f857ede61ee Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Tue, 18 Jul 2023 23:20:16 +0800 Subject: Add ifdef guards for SO_BINDTODEVICE --- netio.c | 2 ++ svr-runopts.c | 4 ++++ 2 files changed, 6 insertions(+) --- a/netio.c +++ b/netio.c @@ -555,10 +555,12 @@ int dropbear_listen(const char* address, /* set to reuse, quick timeout */ setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*) &val, sizeof(val)); +#ifdef SO_BINDTODEVICE if(interface && setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, interface, strlen(interface)) < 0) { dropbear_log(LOG_WARNING, "Couldn't set SO_BINDTODEVICE"); TRACE(("Failed setsockopt with errno failure, %d %s", errno, strerror(errno))) } +#endif #if defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY) if (res->ai_family == AF_INET6) { --- a/svr-runopts.c +++ b/svr-runopts.c @@ -98,8 +98,10 @@ static void printhelp(const char * progn " (default port is %s if none specified)\n" "-P PidFile Create pid file PidFile\n" " (default %s)\n" +#ifdef SO_BINDTODEVICE "-l \n" " interface to bind on\n" +#endif #if INETD_MODE "-i Start for inetd\n" #endif @@ -267,9 +269,11 @@ void svr_getopts(int argc, char ** argv) case 'P': next = &svr_opts.pidfile; break; +#ifdef SO_BINDTODEVICE case 'l': next = &svr_opts.interface; break; +#endif #if DO_MOTD /* motd is displayed by default, -m turns it off */ case 'm':