kobject: Make support for uevent_helper optional.
Support for uevent_helper, aka hotplug, is not required on many systems
these days but it can still be enabled via sysfs or sysctl.
Reported-by: Darren Shepherd <darren.s.shepherd@gmail.com>
Signed-off-by: Michael Marineau <mike@marineau.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 4e3bd71..9ebf9e2 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -29,7 +29,9 @@
u64 uevent_seqnum;
+#ifdef CONFIG_UEVENT_HELPER
char uevent_helper[UEVENT_HELPER_PATH_LEN] = CONFIG_UEVENT_HELPER_PATH;
+#endif
#ifdef CONFIG_NET
struct uevent_sock {
struct list_head list;
@@ -109,6 +111,7 @@
}
#endif
+#ifdef CONFIG_UEVENT_HELPER
static int kobj_usermode_filter(struct kobject *kobj)
{
const struct kobj_ns_type_operations *ops;
@@ -147,6 +150,7 @@
{
kfree(info->data);
}
+#endif
/**
* kobject_uevent_env - send an uevent with environmental data
@@ -323,6 +327,7 @@
#endif
mutex_unlock(&uevent_sock_mutex);
+#ifdef CONFIG_UEVENT_HELPER
/* call uevent_helper, usually only enabled during early boot */
if (uevent_helper[0] && !kobj_usermode_filter(kobj)) {
struct subprocess_info *info;
@@ -347,6 +352,7 @@
env = NULL; /* freed by cleanup_uevent_env */
}
}
+#endif
exit:
kfree(devpath);