[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / inotify.h

/*
 * Inode based directory notification for Linux
 *
 * Copyright (C) 2005 John McCutchan
 */

#ifndef _LINUX_INOTIFY_H
#define _LINUX_INOTIFY_H

/* For O_CLOEXEC and O_NONBLOCK */
#include <linux/fcntl.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 */
};

/* the following are legal, implemented events that user-space can watch for */
#define IN_ACCESS		0x00000001	/* File was accessed */
#define IN_MODIFY		0x00000002	/* File was modified */
#define IN_ATTRIB		0x00000004	/* Metadata changed */
#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_CREATE		0x00000100	/* Subfile was created */
#define IN_DELETE		0x00000200	/* Subfile was deleted */
#define IN_DELETE_SELF		0x00000400	/* Self was deleted */
#define IN_MOVE_SELF		0x00000800	/* Self was moved */

/* the following are legal events.  they are sent as needed to any watch */
#define IN_UNMOUNT		0x00002000	/* Backing fs was unmounted */
#define IN_Q_OVERFLOW		0x00004000	/* Event queued overflowed */
#define IN_IGNORED		0x00008000	/* File was ignored */

/* helper events */
#define IN_CLOSE		(IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */
#define IN_MOVE			(IN_MOVED_FROM | IN_MOVED_TO) /* moves */

/* special flags */
#define IN_ONLYDIR		0x01000000	/* only watch the path if it is a directory */
#define IN_DONT_FOLLOW		0x02000000	/* don't follow a sym link */
#define IN_EXCL_UNLINK		0x04000000	/* exclude events on unlinked objects */
#define IN_MASK_ADD		0x20000000	/* add to the mask of an already existing watch */
#define IN_ISDIR		0x40000000	/* event occurred against dir */
#define IN_ONESHOT		0x80000000	/* only send event once */

/*
 * All of the events - we build the list by hand so that we can add flags in
 * the future and not break backward compatibility.  Apps will get only the
 * events that they originally wanted.  Be sure to add new events here!
 */
#define IN_ALL_EVENTS	(IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \
			 IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \
			 IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \
			 IN_MOVE_SELF)

/* Flags for sys_inotify_init1.  */
#define IN_CLOEXEC O_CLOEXEC
#define IN_NONBLOCK O_NONBLOCK

#ifdef __KERNEL__
#include <linux/sysctl.h>
extern struct ctl_table inotify_table[]; /* for sysctl */
#endif

#endif	/* _LINUX_INOTIFY_H */
Commit	Line	Data
0eeca283 RL	1	/*
	2	* Inode based directory notification for Linux
	3	*
	4	* Copyright (C) 2005 John McCutchan
	5	*/
	6
	7	#ifndef _LINUX_INOTIFY_H
	8	#define _LINUX_INOTIFY_H
	9
510df2dd	10	/* For O_CLOEXEC and O_NONBLOCK */
4006553b	11	#include <linux/fcntl.h>
0eeca283 RL	12	#include <linux/types.h>
	13
	14	/*
	15	* struct inotify_event - structure read from the inotify device for each event
	16	*
	17	* When you are watching a directory, you will receive the filename for events
	18	* such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd.
	19	*/
	20	struct inotify_event {
	21	__s32 wd; /* watch descriptor */
	22	__u32 mask; /* watch mask */
	23	__u32 cookie; /* cookie to synchronize two events */
	24	__u32 len; /* length (including nulls) of name */
	25	char name[0]; /* stub for possible name */
	26	};
	27
	28	/* the following are legal, implemented events that user-space can watch for */
	29	#define IN_ACCESS 0x00000001 /* File was accessed */
	30	#define IN_MODIFY 0x00000002 /* File was modified */
	31	#define IN_ATTRIB 0x00000004 /* Metadata changed */
	32	#define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */
	33	#define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */
	34	#define IN_OPEN 0x00000020 /* File was opened */
	35	#define IN_MOVED_FROM 0x00000040 /* File was moved from X */
	36	#define IN_MOVED_TO 0x00000080 /* File was moved to Y */
	37	#define IN_CREATE 0x00000100 /* Subfile was created */
	38	#define IN_DELETE 0x00000200 /* Subfile was deleted */
	39	#define IN_DELETE_SELF 0x00000400 /* Self was deleted */
89204c40	40	#define IN_MOVE_SELF 0x00000800 /* Self was moved */
0eeca283 RL	41
	42	/* the following are legal events. they are sent as needed to any watch */
	43	#define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */
	44	#define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
	45	#define IN_IGNORED 0x00008000 /* File was ignored */
	46
	47	/* helper events */
	48	#define IN_CLOSE (IN_CLOSE_WRITE \| IN_CLOSE_NOWRITE) /* close */
	49	#define IN_MOVE (IN_MOVED_FROM \| IN_MOVED_TO) /* moves */
	50
	51	/* special flags */
8140a500 JM	52	#define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */
8140a500 JM	53	#define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */
8c1934c8	54	#define IN_EXCL_UNLINK 0x04000000 /* exclude events on unlinked objects */
7ea6040b	55	#define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */
0eeca283 RL	56	#define IN_ISDIR 0x40000000 /* event occurred against dir */
	57	#define IN_ONESHOT 0x80000000 /* only send event once */
	58
	59	/*
	60	* All of the events - we build the list by hand so that we can add flags in
	61	* the future and not break backward compatibility. Apps will get only the
	62	* events that they originally wanted. Be sure to add new events here!
	63	*/
	64	#define IN_ALL_EVENTS (IN_ACCESS \| IN_MODIFY \| IN_ATTRIB \| IN_CLOSE_WRITE \| \
	65	IN_CLOSE_NOWRITE \| IN_OPEN \| IN_MOVED_FROM \| \
89204c40 JM	66	IN_MOVED_TO \| IN_DELETE \| IN_CREATE \| IN_DELETE_SELF \| \
89204c40 JM	67	IN_MOVE_SELF)
0eeca283	68
4006553b UD	69	/* Flags for sys_inotify_init1. */
4006553b UD	70	#define IN_CLOEXEC O_CLOEXEC
510df2dd	71	#define IN_NONBLOCK O_NONBLOCK
4006553b	72
d14f1729 DY	73	#ifdef __KERNEL__
	74	#include <linux/sysctl.h>
	75	extern struct ctl_table inotify_table[]; /* for sysctl */
	76	#endif
	77
0eeca283	78	#endif /* _LINUX_INOTIFY_H */