linux/fs/notify/inotify/inotify.h
Amir Goldstein a0a92d261f fsnotify: move mask out of struct fsnotify_event
Common fsnotify_event helpers have no need for the mask field.
It is only used by backend code, so move the field out of the
abstract fsnotify_event struct and into the concrete backend
event structs.

This change packs struct inotify_event_info better on 64bit
machine and will allow us to cram some more fields into
struct fanotify_event_info.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2019-02-06 15:25:11 +01:00

52 lines
1.3 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/fsnotify_backend.h>
#include <linux/inotify.h>
#include <linux/slab.h> /* struct kmem_cache */
struct inotify_event_info {
struct fsnotify_event fse;
u32 mask;
int wd;
u32 sync_cookie;
int name_len;
char name[];
};
struct inotify_inode_mark {
struct fsnotify_mark fsn_mark;
int wd;
};
static inline struct inotify_event_info *INOTIFY_E(struct fsnotify_event *fse)
{
return container_of(fse, struct inotify_event_info, fse);
}
extern void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark,
struct fsnotify_group *group);
extern int inotify_handle_event(struct fsnotify_group *group,
struct inode *inode,
u32 mask, const void *data, int data_type,
const unsigned char *file_name, u32 cookie,
struct fsnotify_iter_info *iter_info);
extern const struct fsnotify_ops inotify_fsnotify_ops;
extern struct kmem_cache *inotify_inode_mark_cachep;
#ifdef CONFIG_INOTIFY_USER
static inline void dec_inotify_instances(struct ucounts *ucounts)
{
dec_ucount(ucounts, UCOUNT_INOTIFY_INSTANCES);
}
static inline struct ucounts *inc_inotify_watches(struct ucounts *ucounts)
{
return inc_ucount(ucounts->ns, ucounts->uid, UCOUNT_INOTIFY_WATCHES);
}
static inline void dec_inotify_watches(struct ucounts *ucounts)
{
dec_ucount(ucounts, UCOUNT_INOTIFY_WATCHES);
}
#endif