Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * Copyright 1997 Transmeta Corporation - All Rights Reserved
3 *
4 * This file is part of the Linux kernel and is made available under
5 * the terms of the GNU General Public License, version 2, or at your
6 * option, any later version, incorporated herein by reference.
7 *
8 * ----------------------------------------------------------------------- */
9
10
11#ifndef _UAPI_LINUX_AUTO_FS_H
12#define _UAPI_LINUX_AUTO_FS_H
13
14#include <linux/types.h>
15#include <linux/limits.h>
16#ifndef __KERNEL__
17#include <sys/ioctl.h>
18#endif /* __KERNEL__ */
19
20
21/* This file describes autofs v3 */
22#define AUTOFS_PROTO_VERSION 3
23
24/* Range of protocol versions defined */
25#define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION
26#define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION
27
28/*
29 * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed
30 * back to the kernel via ioctl from userspace. On architectures where 32- and
31 * 64-bit userspace binaries can be executed it's important that the size of
32 * autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we
33 * do not break the binary ABI interface by changing the structure size.
34 */
35#if defined(__ia64__) || defined(__alpha__) /* pure 64bit architectures */
36typedef unsigned long autofs_wqt_t;
37#else
38typedef unsigned int autofs_wqt_t;
39#endif
40
41/* Packet types */
42#define autofs_ptype_missing 0 /* Missing entry (mount request) */
43#define autofs_ptype_expire 1 /* Expire entry (umount request) */
44
45struct autofs_packet_hdr {
46 int proto_version; /* Protocol version */
47 int type; /* Type of packet */
48};
49
50struct autofs_packet_missing {
51 struct autofs_packet_hdr hdr;
52 autofs_wqt_t wait_queue_token;
53 int len;
54 char name[NAME_MAX+1];
55};
56
57/* v3 expire (via ioctl) */
58struct autofs_packet_expire {
59 struct autofs_packet_hdr hdr;
60 int len;
61 char name[NAME_MAX+1];
62};
63
64#define AUTOFS_IOCTL 0x93
65
66enum {
67 AUTOFS_IOC_READY_CMD = 0x60,
68 AUTOFS_IOC_FAIL_CMD,
69 AUTOFS_IOC_CATATONIC_CMD,
70 AUTOFS_IOC_PROTOVER_CMD,
71 AUTOFS_IOC_SETTIMEOUT_CMD,
72 AUTOFS_IOC_EXPIRE_CMD,
73};
74
75#define AUTOFS_IOC_READY _IO(AUTOFS_IOCTL, AUTOFS_IOC_READY_CMD)
76#define AUTOFS_IOC_FAIL _IO(AUTOFS_IOCTL, AUTOFS_IOC_FAIL_CMD)
77#define AUTOFS_IOC_CATATONIC _IO(AUTOFS_IOCTL, AUTOFS_IOC_CATATONIC_CMD)
78#define AUTOFS_IOC_PROTOVER _IOR(AUTOFS_IOCTL, AUTOFS_IOC_PROTOVER_CMD, int)
79#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(AUTOFS_IOCTL, AUTOFS_IOC_SETTIMEOUT_CMD, compat_ulong_t)
80#define AUTOFS_IOC_SETTIMEOUT _IOWR(AUTOFS_IOCTL, AUTOFS_IOC_SETTIMEOUT_CMD, unsigned long)
81#define AUTOFS_IOC_EXPIRE _IOR(AUTOFS_IOCTL, AUTOFS_IOC_EXPIRE_CMD, struct autofs_packet_expire)
82
83#endif /* _UAPI_LINUX_AUTO_FS_H */