1/* -*- linux-c -*- ------------------------------------------------------- * 2 * 3 * linux/include/linux/auto_fs.h 4 * 5 * Copyright 1997 Transmeta Corporation - All Rights Reserved 6 * 7 * This file is part of the Linux kernel and is made available under 8 * the terms of the GNU General Public License, version 2, or at your 9 * option, any later version, incorporated herein by reference. 10 * 11 * ----------------------------------------------------------------------- */ 12 13 14#ifndef _LINUX_AUTO_FS_H 15#define _LINUX_AUTO_FS_H 16 17#include <linux/types.h> 18#ifdef __KERNEL__ 19#include <linux/fs.h> 20#include <linux/limits.h> 21#include <linux/ioctl.h> 22#else 23#include <sys/ioctl.h> 24#endif /* __KERNEL__ */ 25 26/* This file describes autofs v3 */ 27#define AUTOFS_PROTO_VERSION 3 28 29/* Range of protocol versions defined */ 30#define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION 31#define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION 32 33/* 34 * Architectures where both 32- and 64-bit binaries can be executed 35 * on 64-bit kernels need this. This keeps the structure format 36 * uniform, and makes sure the wait_queue_token isn't too big to be 37 * passed back down to the kernel. 38 * 39 * This assumes that on these architectures: 40 * mode 32 bit 64 bit 41 * ------------------------- 42 * int 32 bit 32 bit 43 * long 32 bit 64 bit 44 * 45 * If so, 32-bit user-space code should be backwards compatible. 46 */ 47 48#if defined(__sparc__) || defined(__mips__) || defined(__x86_64__) || \ 49 defined(__powerpc__) || defined(__s390__) 50typedef unsigned int autofs_wqt_t; 51#else 52typedef unsigned long autofs_wqt_t; 53#endif 54 55/* Packet types */ 56#define autofs_ptype_missing 0 /* Missing entry (mount request) */ 57#define autofs_ptype_expire 1 /* Expire entry (umount request) */ 58 59struct autofs_packet_hdr { 60 int proto_version; /* Protocol version */ 61 int type; /* Type of packet */ 62}; 63 64struct autofs_packet_missing { 65 struct autofs_packet_hdr hdr; 66 autofs_wqt_t wait_queue_token; 67 int len; 68 char name[NAME_MAX+1]; 69}; 70 71/* v3 expire (via ioctl) */ 72struct autofs_packet_expire { 73 struct autofs_packet_hdr hdr; 74 int len; 75 char name[NAME_MAX+1]; 76}; 77 78#define AUTOFS_IOC_READY _IO(0x93,0x60) 79#define AUTOFS_IOC_FAIL _IO(0x93,0x61) 80#define AUTOFS_IOC_CATATONIC _IO(0x93,0x62) 81#define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int) 82#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,compat_ulong_t) 83#define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long) 84#define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire) 85 86#endif /* _LINUX_AUTO_FS_H */ 87