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