[mirror_ubuntu-artful-kernel.git] / include / uapi / linux / auto_fs.h

/*
 *   Copyright 1997 Transmeta Corporation - All Rights Reserved
 *
 * 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 _UAPI_LINUX_AUTO_FS_H
#define _UAPI_LINUX_AUTO_FS_H

#include <linux/types.h>
#include <linux/limits.h>
#ifndef __KERNEL__
#include <sys/ioctl.h>
#endif /* __KERNEL__ */


/* This file describes autofs v3 */
#define AUTOFS_PROTO_VERSION	3

/* Range of protocol versions defined */
#define AUTOFS_MAX_PROTO_VERSION	AUTOFS_PROTO_VERSION
#define AUTOFS_MIN_PROTO_VERSION	AUTOFS_PROTO_VERSION

/*
 * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed
 * back to the kernel via ioctl from userspace. On architectures where 32- and
 * 64-bit userspace binaries can be executed it's important that the size of
 * autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we
 * do not break the binary ABI interface by changing the structure size.
 */
#if defined(__ia64__) || defined(__alpha__) /* pure 64bit architectures */
typedef unsigned long autofs_wqt_t;
#else
typedef unsigned int autofs_wqt_t;
#endif

/* Packet types */
#define autofs_ptype_missing	0	/* Missing entry (mount request) */
#define autofs_ptype_expire	1	/* Expire entry (umount request) */

struct autofs_packet_hdr {
	int proto_version;		/* Protocol version */
	int type;			/* Type of packet */
};

struct autofs_packet_missing {
	struct autofs_packet_hdr hdr;
	autofs_wqt_t wait_queue_token;
	int len;
	char name[NAME_MAX+1];
};	

/* v3 expire (via ioctl) */
struct autofs_packet_expire {
	struct autofs_packet_hdr hdr;
	int len;
	char name[NAME_MAX+1];
};

#define AUTOFS_IOCTL 0x93

enum {
	AUTOFS_IOC_READY_CMD = 0x60,
	AUTOFS_IOC_FAIL_CMD,
	AUTOFS_IOC_CATATONIC_CMD,
	AUTOFS_IOC_PROTOVER_CMD,
	AUTOFS_IOC_SETTIMEOUT_CMD,
	AUTOFS_IOC_EXPIRE_CMD,
};

#define AUTOFS_IOC_READY        _IO(AUTOFS_IOCTL, AUTOFS_IOC_READY_CMD)
#define AUTOFS_IOC_FAIL         _IO(AUTOFS_IOCTL, AUTOFS_IOC_FAIL_CMD)
#define AUTOFS_IOC_CATATONIC    _IO(AUTOFS_IOCTL, AUTOFS_IOC_CATATONIC_CMD)
#define AUTOFS_IOC_PROTOVER     _IOR(AUTOFS_IOCTL, AUTOFS_IOC_PROTOVER_CMD, int)
#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(AUTOFS_IOCTL, AUTOFS_IOC_SETTIMEOUT_CMD, compat_ulong_t)
#define AUTOFS_IOC_SETTIMEOUT   _IOWR(AUTOFS_IOCTL, AUTOFS_IOC_SETTIMEOUT_CMD, unsigned long)
#define AUTOFS_IOC_EXPIRE       _IOR(AUTOFS_IOCTL, AUTOFS_IOC_EXPIRE_CMD, struct autofs_packet_expire)

#endif /* _UAPI_LINUX_AUTO_FS_H */
Commit	Line	Data
e9a7c2f1	1	/*
607ca46e DH	2	* Copyright 1997 Transmeta Corporation - All Rights Reserved
	3	*
	4	* This file is part of the Linux kernel and is made available under
	5	* the terms of the GNU General Public License, version 2, or at your
	6	* option, any later version, incorporated herein by reference.
	7	*
	8	* ----------------------------------------------------------------------- */
	9
	10
	11	#ifndef _UAPI_LINUX_AUTO_FS_H
	12	#define _UAPI_LINUX_AUTO_FS_H
	13
	14	#include <linux/types.h>
f58b3c91	15	#include <linux/limits.h>
607ca46e DH	16	#ifndef __KERNEL__
	17	#include <sys/ioctl.h>
	18	#endif /* __KERNEL__ */
	19
	20
	21	/* This file describes autofs v3 */
	22	#define AUTOFS_PROTO_VERSION 3
	23
	24	/* Range of protocol versions defined */
	25	#define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION
	26	#define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION
	27
	28	/*
7cee9384	29	* The wait_queue_token (autofs_wqt_t) is part of a structure which is passed
4f4ffc3a HD	30	* back to the kernel via ioctl from userspace. On architectures where 32- and
	31	* 64-bit userspace binaries can be executed it's important that the size of
	32	* autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we
	33	* do not break the binary ABI interface by changing the structure size.
607ca46e	34	*/
4f4ffc3a	35	#if defined(__ia64__) \|\| defined(__alpha__) /* pure 64bit architectures */
607ca46e	36	typedef unsigned long autofs_wqt_t;
4f4ffc3a HD	37	#else
4f4ffc3a HD	38	typedef unsigned int autofs_wqt_t;
607ca46e DH	39	#endif
	40
	41	/* Packet types */
	42	#define autofs_ptype_missing 0 /* Missing entry (mount request) */
	43	#define autofs_ptype_expire 1 /* Expire entry (umount request) */
	44
	45	struct autofs_packet_hdr {
	46	int proto_version; /* Protocol version */
	47	int type; /* Type of packet */
	48	};
	49
	50	struct autofs_packet_missing {
	51	struct autofs_packet_hdr hdr;
7cee9384	52	autofs_wqt_t wait_queue_token;
607ca46e DH	53	int len;
	54	char name[NAME_MAX+1];
	55	};
	56
	57	/* v3 expire (via ioctl) */
	58	struct autofs_packet_expire {
	59	struct autofs_packet_hdr hdr;
	60	int len;
	61	char name[NAME_MAX+1];
	62	};
	63
0fae77fe TK	64	#define AUTOFS_IOCTL 0x93
	65
	66	enum {
	67	AUTOFS_IOC_READY_CMD = 0x60,
	68	AUTOFS_IOC_FAIL_CMD,
	69	AUTOFS_IOC_CATATONIC_CMD,
	70	AUTOFS_IOC_PROTOVER_CMD,
	71	AUTOFS_IOC_SETTIMEOUT_CMD,
	72	AUTOFS_IOC_EXPIRE_CMD,
	73	};
	74
	75	#define AUTOFS_IOC_READY _IO(AUTOFS_IOCTL, AUTOFS_IOC_READY_CMD)
	76	#define AUTOFS_IOC_FAIL _IO(AUTOFS_IOCTL, AUTOFS_IOC_FAIL_CMD)
	77	#define AUTOFS_IOC_CATATONIC _IO(AUTOFS_IOCTL, AUTOFS_IOC_CATATONIC_CMD)
	78	#define AUTOFS_IOC_PROTOVER _IOR(AUTOFS_IOCTL, AUTOFS_IOC_PROTOVER_CMD, int)
	79	#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(AUTOFS_IOCTL, AUTOFS_IOC_SETTIMEOUT_CMD, compat_ulong_t)
	80	#define AUTOFS_IOC_SETTIMEOUT _IOWR(AUTOFS_IOCTL, AUTOFS_IOC_SETTIMEOUT_CMD, unsigned long)
	81	#define AUTOFS_IOC_EXPIRE _IOR(AUTOFS_IOCTL, AUTOFS_IOC_EXPIRE_CMD, struct autofs_packet_expire)
607ca46e DH	82
607ca46e DH	83	#endif /* _UAPI_LINUX_AUTO_FS_H */