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/* -*- 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            5

#define AUTOFS_MIN_PROTO_VERSION        3

#define AUTOFS_MAX_PROTO_VERSION        5

#define AUTOFS_PROTO_SUBVERSION         0

/* Mask for expire behaviour */

#define AUTOFS_EXP_IMMEDIATE            1

#define AUTOFS_EXP_LEAVES               2

/* 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_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 */