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author | Amir Goldstein <amir73il@gmail.com> | 2020-07-08 14:11:42 +0300 |
---|---|---|
committer | Jan Kara <jack@suse.cz> | 2020-07-15 18:37:03 +0300 |
commit | b8a6c3a2f0ae4d82732810e55ca8aa455e040bbf (patch) | |
tree | 1ff4d371101455f107cf5ca611e01dd1a910e07b /fs/notify/fanotify/fanotify.h | |
parent | 956235afd145e60094642fca83486c0f3ccaca16 (diff) | |
download | linux-b8a6c3a2f0ae4d82732810e55ca8aa455e040bbf.tar.xz |
fanotify: create overflow event type
The special overflow event is allocated as struct fanotify_path_event,
but with a null path.
Use a special event type to identify the overflow event, so the helper
fanotify_has_event_path() will always indicate a non null path.
Allocating the overflow event doesn't need any of the fancy stuff in
fanotify_alloc_event(), so create a simplified helper for allocating the
overflow event.
There is also no need to store and report the pid with an overflow event.
Link: https://lore.kernel.org/r/20200708111156.24659-7-amir73il@gmail.com
Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify/fanotify/fanotify.h')
-rw-r--r-- | fs/notify/fanotify/fanotify.h | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/fs/notify/fanotify/fanotify.h b/fs/notify/fanotify/fanotify.h index 8ce7ccfc4b0d..1b2a3bbe6008 100644 --- a/fs/notify/fanotify/fanotify.h +++ b/fs/notify/fanotify/fanotify.h @@ -63,6 +63,7 @@ enum fanotify_event_type { FANOTIFY_EVENT_TYPE_FID_NAME, /* variable length */ FANOTIFY_EVENT_TYPE_PATH, FANOTIFY_EVENT_TYPE_PATH_PERM, + FANOTIFY_EVENT_TYPE_OVERFLOW, /* struct fanotify_event */ }; struct fanotify_event { @@ -72,6 +73,14 @@ struct fanotify_event { struct pid *pid; }; +static inline void fanotify_init_event(struct fanotify_event *event, + unsigned long id, u32 mask) +{ + fsnotify_init_event(&event->fse, id); + event->mask = mask; + event->pid = NULL; +} + struct fanotify_fid_event { struct fanotify_event fae; __kernel_fsid_t fsid; @@ -202,9 +211,3 @@ static inline struct path *fanotify_event_path(struct fanotify_event *event) else return NULL; } - -struct fanotify_event *fanotify_alloc_event(struct fsnotify_group *group, - struct inode *inode, u32 mask, - const void *data, int data_type, - const struct qstr *file_name, - __kernel_fsid_t *fsid); |