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Commit 62731fa0 authored by Alexey Zaytsev's avatar Alexey Zaytsev Committed by Eric Paris
Browse files

fanotify: split version into version and metadata_len 



To implement per event type optional headers we are interested in
knowing how long the metadata structure is.  This patch slits the __u32
version field into a __u8 version and a __u16 metadata_len field (with
__u8 left over).  This should allow for backwards compat ABI.

Signed-off-by: default avatarAlexey Zaytsev <alexey.zaytsev@gmail.com>
[rewrote descrtion and changed object sizes and ordering - eparis]
Signed-off-by: default avatarEric Paris <eparis@redhat.com>
parent fdbf3cee

include/linux/fanotify.h

+4 −2
Original line number Diff line number Diff line
@@ -83,11 +83,13 @@ 
				 FAN_ALL_PERM_EVENTS |\

				 FAN_Q_OVERFLOW)



#define FANOTIFY_METADATA_VERSION	2

#define FANOTIFY_METADATA_VERSION	3



struct fanotify_event_metadata {

	__u32 event_len;

	__u32 vers;

	__u8 vers;

	__u8 reserved;

	__u16 metadata_len;

	__aligned_u64 mask;

	__s32 fd;

	__s32 pid;