static int unix_server_start(server_generic_t *server)
{
int ret;
struct sockaddr_un *sa = (struct sockaddr_un *) server->sa;
server->sock = socket(AF_UNIX, SOCK_STREAM, 0);
if ( server->sock < 0 )
return prelude_error_verbose(PRELUDE_ERROR_GENERIC, "error creating UNIX socket: %s", strerror(errno));
ret = is_unix_socket_already_used(server->sock, sa, server->slen);
if ( ret < 0 ) {
close(server->sock);
return ret;
}
ret = generic_server(server->sock, server->sa, server->slen);
if ( ret < 0 ) {
close(server->sock);
return ret;
}
/*
* Everyone should be able to access the filesystem object
* representing our socket.
*/
ret = chmod(sa->sun_path, S_IRWXU|S_IRWXG|S_IRWXO);
if ( ret < 0 )
return prelude_error_verbose(PRELUDE_ERROR_GENERIC, "could not set permission on UNIX socket: %s", strerror(errno));
return 0;
}
static int inet_server_start(server_generic_t *server, struct sockaddr *addr, socklen_t addrlen)
{
int ret, on = 1;
server->sock = socket(server->sa->sa_family, SOCK_STREAM, IPPROTO_TCP);
if ( server->sock < 0 )
return prelude_error_verbose(PRELUDE_ERROR_GENERIC, "error creating socket: %s", strerror(errno));
#ifdef IPV6_V6ONLY
/*
* There is a problem on Linux system where getaddrinfo() return address in
* the wrong sort order (IPv4 first, IPv6 next).
*
* As a result we first bind IPv4 addresses, but then we get an error for
* dual-stacked addresses, when the IPv6 addresses come second. When an
* address is dual-stacked, we thus end-up listening only to the IPv4
* instance.
*
* The error happen on dual-stack Linux system, because mapping the IPv6
* address will actually attempt to bind both the IPv4 and IPv6 address.
*
* In order to prevent this problem, we set the IPV6_V6ONLY option so that
* only the IPv6 address is bound.
*/
if ( server->sa->sa_family == AF_INET6 ) {
ret = setsockopt(server->sock, IPPROTO_IPV6, IPV6_V6ONLY, (void *) &on, sizeof(int));
if ( ret < 0 ) {
ret = prelude_error_verbose(PRELUDE_ERROR_GENERIC, "could not set IPV6_V6ONLY: %s.\n", strerror(errno));
goto err;
}
}
#endif
ret = setsockopt(server->sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(int));
if ( ret < 0 ) {
ret = prelude_error_verbose(PRELUDE_ERROR_GENERIC, "error setting SO_REUSEADDR: %s", strerror(errno));
goto err;
}
ret = generic_server(server->sock, addr, addrlen);
if ( ret < 0 )
goto err;
return 0;
err:
close(server->sock);
return ret;
}
static int inet_server_start(server_generic_t *server, struct sockaddr *addr, socklen_t addrlen)
{
int ret, on = 1;
server->sock = socket(server->sa->sa_family, SOCK_STREAM, IPPROTO_TCP);
if ( server->sock < 0 )
return prelude_error_verbose(PRELUDE_ERROR_GENERIC, "error creating socket: %s", strerror(errno));
ret = setsockopt(server->sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(int));
if ( ret < 0 ) {
ret = prelude_error_verbose(PRELUDE_ERROR_GENERIC, "error setting SO_REUSEADDR: %s", strerror(errno));
goto err;
}
ret = generic_server(server->sock, addr, addrlen);
if ( ret < 0 )
goto err;
return 0;
err:
close(server->sock);
return ret;
}
