Linux Kernel https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v5.4.300 2023-08-11T09:53:46Z 2023-08-11T09:53:46Z David Howells dhowells@redhat.com 2020-02-12T13:58:35Z urn:sha1:c1df96689fe1e1091f1a7bb35f1322430157e01e [ Upstream commit 0858caa419e6cf9d31e734d09d70b34f64443ef6 ] Add UAPI definitions for the general notification queue, including the following pieces: (*) struct watch_notification. This is the metadata header for notification messages. It includes a type and subtype that indicate the source of the message (eg. WATCH_TYPE_MOUNT_NOTIFY) and the kind of the message (eg. NOTIFY_MOUNT_NEW_MOUNT). The header also contains an information field that conveys the following information: - WATCH_INFO_LENGTH. The size of the entry (entries are variable length). - WATCH_INFO_ID. The watch ID specified when the watchpoint was set. - WATCH_INFO_TYPE_INFO. (Sub)type-specific information. - WATCH_INFO_FLAG_*. Flag bits overlain on the type-specific information. For use by the type. All the information in the header can be used in filtering messages at the point of writing into the buffer. (*) struct watch_notification_removal This is an extended watch-removal notification record that includes an 'id' field that can indicate the identifier of the object being removed if available (for instance, a keyring serial number). Signed-off-by: David Howells <dhowells@redhat.com> Stable-dep-of: d55901522f96 ("keys: Fix linking a duplicate key to a keyring's assoc_array") Signed-off-by: Sasha Levin <sashal@kernel.org>