[mirror_ubuntu-bionic-kernel.git] / include / linux / dnotify.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_DNOTIFY_H
#define _LINUX_DNOTIFY_H
/*
 * Directory notification for Linux
 *
 * Copyright (C) 2000,2002 Stephen Rothwell
 */

#include <linux/fs.h>

struct dnotify_struct {
	struct dnotify_struct *	dn_next;
	__u32			dn_mask;
	int			dn_fd;
	struct file *		dn_filp;
	fl_owner_t		dn_owner;
};

#ifdef __KERNEL__


#ifdef CONFIG_DNOTIFY

#define DNOTIFY_ALL_EVENTS (FS_DELETE | FS_DELETE_CHILD |\
			    FS_MODIFY | FS_MODIFY_CHILD |\
			    FS_ACCESS | FS_ACCESS_CHILD |\
			    FS_ATTRIB | FS_ATTRIB_CHILD |\
			    FS_CREATE | FS_DN_RENAME |\
			    FS_MOVED_FROM | FS_MOVED_TO)

extern int dir_notify_enable;
extern void dnotify_flush(struct file *, fl_owner_t);
extern int fcntl_dirnotify(int, struct file *, unsigned long);

#else

static inline void dnotify_flush(struct file *filp, fl_owner_t id)
{
}

static inline int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg)
{
	return -EINVAL;
}

#endif /* CONFIG_DNOTIFY */

#endif /* __KERNEL __ */

#endif /* _LINUX_DNOTIFY_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef _LINUX_DNOTIFY_H
	3	#define _LINUX_DNOTIFY_H
	4	/*
	5	* Directory notification for Linux
	6	*
	7	* Copyright (C) 2000,2002 Stephen Rothwell
	8	*/
	9
	10	#include <linux/fs.h>
	11
	12	struct dnotify_struct {
	13	struct dnotify_struct * dn_next;
3c5119c0	14	__u32 dn_mask;
1da177e4 LT	15	int dn_fd;
	16	struct file * dn_filp;
	17	fl_owner_t dn_owner;
	18	};
	19
	20	#ifdef __KERNEL__
	21
1da177e4 LT	22
	23	#ifdef CONFIG_DNOTIFY
	24
3c5119c0 EP	25	#define DNOTIFY_ALL_EVENTS (FS_DELETE \| FS_DELETE_CHILD \|\
	26	FS_MODIFY \| FS_MODIFY_CHILD \|\
	27	FS_ACCESS \| FS_ACCESS_CHILD \|\
	28	FS_ATTRIB \| FS_ATTRIB_CHILD \|\
	29	FS_CREATE \| FS_DN_RENAME \|\
	30	FS_MOVED_FROM \| FS_MOVED_TO)
	31
6e006701	32	extern int dir_notify_enable;
1da177e4 LT	33	extern void dnotify_flush(struct file *, fl_owner_t);
1da177e4 LT	34	extern int fcntl_dirnotify(int, struct file *, unsigned long);
1da177e4 LT	35
	36	#else
	37
1da177e4 LT	38	static inline void dnotify_flush(struct file *filp, fl_owner_t id)
	39	{
	40	}
	41
	42	static inline int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg)
	43	{
	44	return -EINVAL;
	45	}
	46
1da177e4 LT	47	#endif /* CONFIG_DNOTIFY */
	48
	49	#endif /* __KERNEL __ */
	50
	51	#endif /* _LINUX_DNOTIFY_H */