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/*
* Inode based directory notification for Linux
*
* Copyright (C) 2005 John McCutchan
*/
#ifndef _LINUX_INOTIFY_H
#define _LINUX_INOTIFY_H
#include <sys/types.h>
#include <linux/limits.h>
#include <linux/types.h>
/*
* struct inotify_event - structure read from the inotify device for each event
*
* When you are watching a directory, you will receive the filename for events
* such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd.
*/
struct inotify_event {
__s32 wd; /* watch descriptor */
__u32 mask; /* watch mask */
__u32 cookie; /* cookie to synchronize two events */
__u32 len; /* length (including nulls) of name */
char name[0]; /* stub for possible name */
};
/*
* struct inotify_watch_request - represents a watch request
*
* Pass to the inotify device via the INOTIFY_WATCH ioctl
*/
struct inotify_watch_request {
char *name; /* filename name */
__u32 mask; /* event mask */
};
/* the following are legal, implemented events */
#define IN_ACCESS 0x00000001 /* File was accessed */
#define IN_MODIFY 0x00000002 /* File was modified */
#define IN_ATTRIB 0x00000004 /* File changed attributes */
#define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */
#define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */
#define IN_OPEN 0x00000020 /* File was opened */
#define IN_MOVED_FROM 0x00000040 /* File was moved from X */
#define IN_MOVED_TO 0x00000080 /* File was moved to Y */
#define IN_DELETE_SUBDIR 0x00000100 /* Subdir was deleted */
#define IN_DELETE_FILE 0x00000200 /* Subfile was deleted */
#define IN_CREATE_SUBDIR 0x00000400 /* Subdir was created */
#define IN_CREATE_FILE 0x00000800 /* Subfile was created */
#define IN_DELETE_SELF 0x00001000 /* Self was deleted */
#define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */
#define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
#define IN_IGNORED 0x00008000 /* File was ignored */
/* special flags */
#define IN_ALL_EVENTS 0xffffffff /* All the events */
#define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE)
#define INOTIFY_IOCTL_MAGIC 'Q'
#define INOTIFY_IOCTL_MAXNR 2
#define INOTIFY_WATCH _IOR(INOTIFY_IOCTL_MAGIC, 1, struct inotify_watch_request)
#define INOTIFY_IGNORE _IOR(INOTIFY_IOCTL_MAGIC, 2, int)
#ifdef __KERNEL__
#include <linux/dcache.h>
#include <linux/fs.h>
#include <linux/config.h>
#include <asm/atomic.h>
#ifdef CONFIG_INOTIFY
extern void inotify_inode_queue_event(struct inode *, __u32, __u32,
const char *);
extern void inotify_dentry_parent_queue_event(struct dentry *, __u32, __u32,
const char *);
extern void inotify_super_block_umount(struct super_block *);
extern void inotify_inode_is_dead(struct inode *);
extern u32 inotify_get_cookie(void);
#else
static inline void inotify_inode_queue_event(struct inode *inode,
__u32 mask, __u32 cookie,
const char *filename)
{
}
static inline void inotify_dentry_parent_queue_event(struct dentry *dentry,
__u32 mask, __u32 cookie,
const char *filename)
{
}
static inline void inotify_super_block_umount(struct super_block *sb)
{
}
static inline void inotify_inode_is_dead(struct inode *inode)
{
}
static inline u32 inotify_get_cookie(void)
{
return 0;
}
#endif /* CONFIG_INOTIFY */
#endif /* __KERNEL __ */
#endif /* _LINUX_INOTIFY_H */
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