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0f46d81f2b
Add notifications for attaching and detaching mounts. The following new event masks are added: FAN_MNT_ATTACH - Mount was attached FAN_MNT_DETACH - Mount was detached If a mount is moved, then the event is reported with (FAN_MNT_ATTACH | FAN_MNT_DETACH). These events add an info record of type FAN_EVENT_INFO_TYPE_MNT containing these fields identifying the affected mounts: __u64 mnt_id - the ID of the mount (see statmount(2)) FAN_REPORT_MNT must be supplied to fanotify_init() to receive these events and no other type of event can be received with this report type. Marks are added with FAN_MARK_MNTNS, which records the mount namespace from an nsfs file (e.g. /proc/self/ns/mnt). Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Link: https://lore.kernel.org/r/20250129165803.72138-3-mszeredi@redhat.com Signed-off-by: Christian Brauner <brauner@kernel.org>