}
#endif
-/* decide if we should manage the whole hotplug event
- * for now look if the kernel calls udevsend instead of /sbin/hotplug
+/* Decide if we should manage the whole uevent, including multiplexing
+ * of the hotplug directories.
+ * For now look if the kernel calls udevsend instead of /sbin/hotplug,
+ * or the uevent-helper in /proc/sys/kernel/hotplug is empty.
*/
static int manage_hotplug_event(void) {
char helper[256];
if (fd < 0)
return 0;
- len = read(fd, helper, 256);
+ len = read(fd, helper, sizeof(helper)-1);
close(fd);
if (len < 0)
return 0;
helper[len] = '\0';
+ if (helper[0] == '\0' || helper[0] == '\n')
+ return 1;
if (strstr(helper, "udevsend"))
return 1;