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/* 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);
}
/*
* INOTIFY_USER_FLAGS represents all of the mask bits that we expose to
* userspace. There is at least one bit (FS_EVENT_ON_CHILD) which is
* used only internally to the kernel.
*/
#define INOTIFY_USER_MASK (IN_ALL_EVENTS)
static inline __u32 inotify_mark_user_mask(struct fsnotify_mark *fsn_mark)
{
__u32 mask = fsn_mark->mask & INOTIFY_USER_MASK;
if (fsn_mark->flags & FSNOTIFY_MARK_FLAG_EXCL_UNLINK)
mask |= IN_EXCL_UNLINK;
if (fsn_mark->flags & FSNOTIFY_MARK_FLAG_IN_ONESHOT)
mask |= IN_ONESHOT;
return mask;
}
extern void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark,
struct fsnotify_group *group);
extern int inotify_handle_inode_event(struct fsnotify_mark *inode_mark,
u32 mask, struct inode *inode,
struct inode *dir,
const struct qstr *name, u32 cookie);
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
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