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/* -*- linux-c -*- ------------------------------------------------------- *
*
* linux/include/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 _LINUX_AUTO_FS_H
#define _LINUX_AUTO_FS_H
#ifdef __KERNEL__
#include <linux/fs.h>
#include <linux/limits.h>
#include <asm/types.h>
#endif /* __KERNEL__ */
#include <linux/ioctl.h>
/* 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
/*
* Architectures where both 32- and 64-bit binaries can be executed
* on 64-bit kernels need this. This keeps the structure format
* uniform, and makes sure the wait_queue_token isn't too big to be
* passed back down to the kernel.
*
* This assumes that on these architectures:
* mode 32 bit 64 bit
* -------------------------
* int 32 bit 32 bit
* long 32 bit 64 bit
*
* If so, 32-bit user-space code should be backwards compatible.
*/
#if defined(__sparc__) || defined(__mips__) || defined(__x86_64__) \
|| defined(__powerpc__) || defined(__s390__)
typedef unsigned int autofs_wqt_t;
#else
typedef unsigned long 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_IOC_READY _IO(0x93,0x60)
#define AUTOFS_IOC_FAIL _IO(0x93,0x61)
#define AUTOFS_IOC_CATATONIC _IO(0x93,0x62)
#define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int)
#define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long)
#define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire)
#endif /* _LINUX_AUTO_FS_H */
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