linux-stable-rt/include/linux/auto_fs4.h

/* -*- c -*-
 * linux/include/linux/auto_fs4.h
 *
 * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
 *
 * This file is part of the Linux kernel and is made available under
 * the terms of the GNU General Public License, version 2, or at your
 * option, any later version, incorporated herein by reference.
 */

#ifndef _LINUX_AUTO_FS4_H
#define _LINUX_AUTO_FS4_H

/* Include common v3 definitions */
#include <linux/auto_fs.h>

/* autofs v4 definitions */
#undef AUTOFS_PROTO_VERSION
#undef AUTOFS_MIN_PROTO_VERSION
#undef AUTOFS_MAX_PROTO_VERSION

#define AUTOFS_PROTO_VERSION		4
#define AUTOFS_MIN_PROTO_VERSION	3
#define AUTOFS_MAX_PROTO_VERSION	4

#define AUTOFS_PROTO_SUBVERSION		6

/* Mask for expire behaviour */
#define AUTOFS_EXP_IMMEDIATE		1
#define AUTOFS_EXP_LEAVES		2

/* New message type */
#define autofs_ptype_expire_multi	2	/* Expire entry (umount request) */

/* v4 multi expire (via pipe) */
struct autofs_packet_expire_multi {
	struct autofs_packet_hdr hdr;
        autofs_wqt_t wait_queue_token;
	int len;
	char name[NAME_MAX+1];
};

union autofs_packet_union {
	struct autofs_packet_hdr hdr;
	struct autofs_packet_missing missing;
	struct autofs_packet_expire expire;
	struct autofs_packet_expire_multi expire_multi;
};

#define AUTOFS_IOC_EXPIRE_MULTI		_IOW(0x93,0x66,int)
#define AUTOFS_IOC_PROTOSUBVER		_IOR(0x93,0x67,int)
#define AUTOFS_IOC_ASKREGHOST           _IOR(0x93,0x68,int)
#define AUTOFS_IOC_TOGGLEREGHOST        _IOR(0x93,0x69,int)
#define AUTOFS_IOC_ASKUMOUNT		_IOR(0x93,0x70,int)


#endif /* _LINUX_AUTO_FS4_H */