fanotify: Introduce FAN_NOFD

FAN_NOFD is used in fanotify events that do not provide an open file
descriptor (like the overflow_event).

Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Signed-off-by: Eric Paris <eparis@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h
index bdbf9bb29b54..c73224315aee 100644
--- a/include/linux/fanotify.h
+++ b/include/linux/fanotify.h
@@ -101,6 +101,8 @@ struct fanotify_response {
 /* Legit userspace responses to a _PERM event */
 #define FAN_ALLOW       0x01
 #define FAN_DENY        0x02
+/* No fd set in event */
+#define FAN_NOFD        -1
 
 /* Helper functions to deal with fanotify_event_metadata buffers */
 #define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata))