From 9e66e4233db9c7e31e9ee706be2c9ddd54cf99b3 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Thu, 17 Dec 2009 21:24:34 -0500 Subject: fanotify: permissions and blocking This is the backend work needed for fanotify to support the new FS_OPEN_PERM and FS_ACCESS_PERM fsnotify events. This is done using the new fsnotify secondary queue. No userspace interface is provided actually respond to or request these events. Signed-off-by: Eric Paris --- include/linux/fsnotify_backend.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux/fsnotify_backend.h') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index c34728e7d8c..b0d00fd6bfa 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -159,6 +159,14 @@ struct fsnotify_group { struct fasync_struct *fa; /* async notification */ struct user_struct *user; } inotify_data; +#endif +#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS + struct fanotify_group_private_data { + /* allows a group to block waiting for a userspace response */ + struct mutex access_mutex; + struct list_head access_list; + wait_queue_head_t access_waitq; + } fanotify_data; #endif }; }; @@ -227,6 +235,10 @@ struct fsnotify_event { size_t name_len; struct pid *tgid; +#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS + __u32 response; /* userspace answer to question */ +#endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */ + struct list_head private_data_list; /* groups can store private data here */ }; -- cgit v1.2.3