dbus, lua: set CLOEXEC on fds

Signed-off-by: Julien Danjou <julien@danjou.info>

awesomerc.lua.in

@@ -438,5 +438,5 @@ awful.hooks.unmarked.register(hook_unmarked)
 awful.hooks.manage.register(hook_manage)
 awful.hooks.mouseover.register(hook_mouseover)
 awful.hooks.arrange.register(hook_arrange)
-awful.hooks.timer.register(1, hook_timer)
+ -- awful.hooks.timer.register(1, hook_timer)
 -- }}}

dbus.c

@@ -24,6 +24,8 @@
 
 #include <ev.h>
 #include <dbus/dbus.h>
+#include <unistd.h>
+#include <fcntl.h>
 
 #include "dbus.h"
 #include "widget.h"
@@ -163,6 +165,8 @@ a_dbus_init(void)
         return false;
     }
 
+    fcntl(fd, F_SETFD, FD_CLOEXEC);
+
     ev_io_init(&dbusio, a_dbus_process_requests, fd, EV_READ);
     ev_io_start(EV_DEFAULT_UC_ &dbusio);
     ev_unref(EV_DEFAULT_UC);

lua.c

@@ -26,6 +26,8 @@
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <unistd.h>
+#include <fcntl.h>
 
 #include <ev.h>
 
@@ -765,8 +767,9 @@ luaA_cs_init(void)
 {
     int csfd = socket_getclient();
 
-    if (csfd < 0)
+    if (csfd < 0 || fcntl(csfd, F_SETFD, FD_CLOEXEC) == -1)
         return;
+
     addr = socket_getaddr(getenv("DISPLAY"));
 
     if(bind(csfd, (const struct sockaddr *) addr, SUN_LEN(addr)))