85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
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/* -*- linux-c -*- ------------------------------------------------------- *
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*
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* linux/include/linux/auto_fs.h
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*
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* Copyright 1997 Transmeta Corporation - All Rights Reserved
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*
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* This file is part of the Linux kernel and is made available under
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* the terms of the GNU General Public License, version 2, or at your
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* option, any later version, incorporated herein by reference.
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*
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* ----------------------------------------------------------------------- */
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#ifndef _LINUX_AUTO_FS_H
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#define _LINUX_AUTO_FS_H
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#ifdef __KERNEL__
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#include <linux/fs.h>
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#include <linux/limits.h>
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#include <asm/types.h>
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#endif /* __KERNEL__ */
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#include <linux/ioctl.h>
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/* This file describes autofs v3 */
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#define AUTOFS_PROTO_VERSION 3
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/* Range of protocol versions defined */
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#define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION
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#define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION
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/*
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* Architectures where both 32- and 64-bit binaries can be executed
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* on 64-bit kernels need this. This keeps the structure format
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* uniform, and makes sure the wait_queue_token isn't too big to be
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* passed back down to the kernel.
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*
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* This assumes that on these architectures:
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* mode 32 bit 64 bit
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* -------------------------
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* int 32 bit 32 bit
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* long 32 bit 64 bit
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*
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* If so, 32-bit user-space code should be backwards compatible.
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*/
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#if defined(__sparc__) || defined(__mips__) || defined(__x86_64__) \
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|| defined(__powerpc__) || defined(__s390__)
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typedef unsigned int autofs_wqt_t;
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#else
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typedef unsigned long autofs_wqt_t;
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#endif
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/* Packet types */
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#define autofs_ptype_missing 0 /* Missing entry (mount request) */
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#define autofs_ptype_expire 1 /* Expire entry (umount request) */
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struct autofs_packet_hdr {
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int proto_version; /* Protocol version */
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int type; /* Type of packet */
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};
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struct autofs_packet_missing {
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struct autofs_packet_hdr hdr;
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autofs_wqt_t wait_queue_token;
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int len;
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char name[NAME_MAX+1];
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};
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/* v3 expire (via ioctl) */
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struct autofs_packet_expire {
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struct autofs_packet_hdr hdr;
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int len;
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char name[NAME_MAX+1];
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};
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#define AUTOFS_IOC_READY _IO(0x93,0x60)
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#define AUTOFS_IOC_FAIL _IO(0x93,0x61)
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#define AUTOFS_IOC_CATATONIC _IO(0x93,0x62)
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#define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int)
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#define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long)
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#define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire)
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#endif /* _LINUX_AUTO_FS_H */
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