root/include/linux/auto_fs4.h

INCLUDED FROM

/* -*- 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_ASKUMOUNT            _IOR(0x93,0x70,int)


#endif /* _LINUX_AUTO_FS4_H */