[linux-2.6-block.git] / include / uapi / 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/types.h>
#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		5
#define AUTOFS_MIN_PROTO_VERSION	3
#define AUTOFS_MAX_PROTO_VERSION	5

#define AUTOFS_PROTO_SUBVERSION		2

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

#define AUTOFS_TYPE_ANY			0U
#define AUTOFS_TYPE_INDIRECT		1U
#define AUTOFS_TYPE_DIRECT		2U
#define AUTOFS_TYPE_OFFSET		4U

static inline void set_autofs_type_indirect(unsigned int *type)
{
	*type = AUTOFS_TYPE_INDIRECT;
}

static inline unsigned int autofs_type_indirect(unsigned int type)
{
	return (type == AUTOFS_TYPE_INDIRECT);
}

static inline void set_autofs_type_direct(unsigned int *type)
{
	*type = AUTOFS_TYPE_DIRECT;
}

static inline unsigned int autofs_type_direct(unsigned int type)
{
	return (type == AUTOFS_TYPE_DIRECT);
}

static inline void set_autofs_type_offset(unsigned int *type)
{
	*type = AUTOFS_TYPE_OFFSET;
}

static inline unsigned int autofs_type_offset(unsigned int type)
{
	return (type == AUTOFS_TYPE_OFFSET);
}

static inline unsigned int autofs_type_trigger(unsigned int type)
{
	return (type == AUTOFS_TYPE_DIRECT || type == AUTOFS_TYPE_OFFSET);
}

/*
 * This isn't really a type as we use it to say "no type set" to
 * indicate we want to search for "any" mount in the
 * autofs_dev_ioctl_ismountpoint() device ioctl function.
 */
static inline void set_autofs_type_any(unsigned int *type)
{
	*type = AUTOFS_TYPE_ANY;
}

static inline unsigned int autofs_type_any(unsigned int type)
{
	return (type == AUTOFS_TYPE_ANY);
}

/* Daemon notification packet types */
enum autofs_notify {
	NFY_NONE,
	NFY_MOUNT,
	NFY_EXPIRE
};

/* Kernel protocol version 4 packet types */

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

/* Kernel protocol version 5 packet types */

/* Indirect mount missing and expire requests. */
#define autofs_ptype_missing_indirect	3
#define autofs_ptype_expire_indirect	4

/* Direct mount missing and expire requests */
#define autofs_ptype_missing_direct	5
#define autofs_ptype_expire_direct	6

/* 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;
};

/* autofs v5 common packet struct */
struct autofs_v5_packet {
	struct autofs_packet_hdr hdr;
	autofs_wqt_t wait_queue_token;
	__u32 dev;
	__u64 ino;
	__u32 uid;
	__u32 gid;
	__u32 pid;
	__u32 tgid;
	__u32 len;
	char name[NAME_MAX+1];
};

typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
typedef struct autofs_v5_packet autofs_packet_expire_direct_t;

union autofs_v5_packet_union {
	struct autofs_packet_hdr hdr;
	struct autofs_v5_packet v5_packet;
	autofs_packet_missing_indirect_t missing_indirect;
	autofs_packet_expire_indirect_t expire_indirect;
	autofs_packet_missing_direct_t missing_direct;
	autofs_packet_expire_direct_t expire_direct;
};

#define AUTOFS_IOC_EXPIRE_MULTI		_IOW(0x93, 0x66, int)
#define AUTOFS_IOC_EXPIRE_INDIRECT	AUTOFS_IOC_EXPIRE_MULTI
#define AUTOFS_IOC_EXPIRE_DIRECT	AUTOFS_IOC_EXPIRE_MULTI
#define AUTOFS_IOC_PROTOSUBVER		_IOR(0x93, 0x67, int)
#define AUTOFS_IOC_ASKUMOUNT		_IOR(0x93, 0x70, int)

#endif /* _LINUX_AUTO_FS4_H */
Commit	Line	Data
e9a7c2f1	1	/*
1da177e4 LT	2	* Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
	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	#ifndef _LINUX_AUTO_FS4_H
	10	#define _LINUX_AUTO_FS4_H
	11
	12	/* Include common v3 definitions */
5d461bfe	13	#include <linux/types.h>
1da177e4 LT	14	#include <linux/auto_fs.h>
	15
	16	/* autofs v4 definitions */
	17	#undef AUTOFS_PROTO_VERSION
	18	#undef AUTOFS_MIN_PROTO_VERSION
	19	#undef AUTOFS_MAX_PROTO_VERSION
	20
5c0a32fc	21	#define AUTOFS_PROTO_VERSION 5
1da177e4	22	#define AUTOFS_MIN_PROTO_VERSION 3
5c0a32fc	23	#define AUTOFS_MAX_PROTO_VERSION 5
1da177e4	24
1972580b	25	#define AUTOFS_PROTO_SUBVERSION 2
1da177e4 LT	26
	27	/* Mask for expire behaviour */
	28	#define AUTOFS_EXP_IMMEDIATE 1
	29	#define AUTOFS_EXP_LEAVES 2
	30
a92daf6b IK	31	#define AUTOFS_TYPE_ANY 0U
	32	#define AUTOFS_TYPE_INDIRECT 1U
	33	#define AUTOFS_TYPE_DIRECT 2U
	34	#define AUTOFS_TYPE_OFFSET 4U
	35
	36	static inline void set_autofs_type_indirect(unsigned int *type)
	37	{
	38	*type = AUTOFS_TYPE_INDIRECT;
a92daf6b IK	39	}
	40
	41	static inline unsigned int autofs_type_indirect(unsigned int type)
	42	{
	43	return (type == AUTOFS_TYPE_INDIRECT);
	44	}
	45
	46	static inline void set_autofs_type_direct(unsigned int *type)
	47	{
	48	*type = AUTOFS_TYPE_DIRECT;
a92daf6b IK	49	}
	50
	51	static inline unsigned int autofs_type_direct(unsigned int type)
	52	{
	53	return (type == AUTOFS_TYPE_DIRECT);
	54	}
	55
	56	static inline void set_autofs_type_offset(unsigned int *type)
	57	{
	58	*type = AUTOFS_TYPE_OFFSET;
a92daf6b IK	59	}
	60
	61	static inline unsigned int autofs_type_offset(unsigned int type)
	62	{
	63	return (type == AUTOFS_TYPE_OFFSET);
	64	}
	65
	66	static inline unsigned int autofs_type_trigger(unsigned int type)
	67	{
	68	return (type == AUTOFS_TYPE_DIRECT \|\| type == AUTOFS_TYPE_OFFSET);
	69	}
	70
	71	/*
	72	* This isn't really a type as we use it to say "no type set" to
	73	* indicate we want to search for "any" mount in the
	74	* autofs_dev_ioctl_ismountpoint() device ioctl function.
	75	*/
	76	static inline void set_autofs_type_any(unsigned int *type)
	77	{
	78	*type = AUTOFS_TYPE_ANY;
a92daf6b IK	79	}
	80
	81	static inline unsigned int autofs_type_any(unsigned int type)
	82	{
	83	return (type == AUTOFS_TYPE_ANY);
	84	}
bb979d7f	85
5c0a32fc IK	86	/* Daemon notification packet types */
	87	enum autofs_notify {
	88	NFY_NONE,
	89	NFY_MOUNT,
	90	NFY_EXPIRE
	91	};
	92
	93	/* Kernel protocol version 4 packet types */
	94
	95	/* Expire entry (umount request) */
	96	#define autofs_ptype_expire_multi 2
	97
	98	/* Kernel protocol version 5 packet types */
	99
	100	/* Indirect mount missing and expire requests. */
	101	#define autofs_ptype_missing_indirect 3
	102	#define autofs_ptype_expire_indirect 4
	103
	104	/* Direct mount missing and expire requests */
	105	#define autofs_ptype_missing_direct 5
	106	#define autofs_ptype_expire_direct 6
1da177e4 LT	107
	108	/* v4 multi expire (via pipe) */
	109	struct autofs_packet_expire_multi {
	110	struct autofs_packet_hdr hdr;
0266725a	111	autofs_wqt_t wait_queue_token;
1da177e4 LT	112	int len;
	113	char name[NAME_MAX+1];
	114	};
	115
e8514478 IK	116	union autofs_packet_union {
	117	struct autofs_packet_hdr hdr;
	118	struct autofs_packet_missing missing;
	119	struct autofs_packet_expire expire;
	120	struct autofs_packet_expire_multi expire_multi;
	121	};
	122
5c0a32fc IK	123	/* autofs v5 common packet struct */
	124	struct autofs_v5_packet {
	125	struct autofs_packet_hdr hdr;
	126	autofs_wqt_t wait_queue_token;
	127	__u32 dev;
	128	__u64 ino;
	129	__u32 uid;
	130	__u32 gid;
	131	__u32 pid;
	132	__u32 tgid;
	133	__u32 len;
	134	char name[NAME_MAX+1];
	135	};
	136
	137	typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
	138	typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
	139	typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
	140	typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
	141
e8514478	142	union autofs_v5_packet_union {
1da177e4	143	struct autofs_packet_hdr hdr;
5c0a32fc	144	struct autofs_v5_packet v5_packet;
e8514478 IK	145	autofs_packet_missing_indirect_t missing_indirect;
	146	autofs_packet_expire_indirect_t expire_indirect;
	147	autofs_packet_missing_direct_t missing_direct;
	148	autofs_packet_expire_direct_t expire_direct;
1da177e4 LT	149	};
1da177e4 LT	150
e9a7c2f1	151	#define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93, 0x66, int)
5c0a32fc IK	152	#define AUTOFS_IOC_EXPIRE_INDIRECT AUTOFS_IOC_EXPIRE_MULTI
5c0a32fc IK	153	#define AUTOFS_IOC_EXPIRE_DIRECT AUTOFS_IOC_EXPIRE_MULTI
e9a7c2f1 IK	154	#define AUTOFS_IOC_PROTOSUBVER _IOR(0x93, 0x67, int)
e9a7c2f1 IK	155	#define AUTOFS_IOC_ASKUMOUNT _IOR(0x93, 0x70, int)
1da177e4 LT	156
1da177e4 LT	157	#endif /* _LINUX_AUTO_FS4_H */