LXR linux/include/uapi/linux/auto

   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#ifndef __KERNEL__
  16#include <sys/ioctl.h>
  17#endif /* __KERNEL__ */
  18
  19
  20/* This file describes autofs v3 */
  21#define AUTOFS_PROTO_VERSION    3
  22
  23/* Range of protocol versions defined */
  24#define AUTOFS_MAX_PROTO_VERSION        AUTOFS_PROTO_VERSION
  25#define AUTOFS_MIN_PROTO_VERSION        AUTOFS_PROTO_VERSION
  26
  27/*
  28 * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed
  29 * back to the kernel via ioctl from userspace. On architectures where 32- and
  30 * 64-bit userspace binaries can be executed it's important that the size of
  31 * autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we
  32 * do not break the binary ABI interface by changing the structure size.
  33 */
  34#if defined(__ia64__) || defined(__alpha__) /* pure 64bit architectures */
  35typedef unsigned long autofs_wqt_t;
  36#else
  37typedef unsigned int autofs_wqt_t;
  38#endif
  39
  40/* Packet types */
  41#define autofs_ptype_missing    0       /* Missing entry (mount request) */
  42#define autofs_ptype_expire     1       /* Expire entry (umount request) */
  43
  44struct autofs_packet_hdr {
  45        int proto_version;              /* Protocol version */
  46        int type;                       /* Type of packet */
  47};
  48
  49struct autofs_packet_missing {
  50        struct autofs_packet_hdr hdr;
  51        autofs_wqt_t wait_queue_token;
  52        int len;
  53        char name[NAME_MAX+1];
  54};      
  55
  56/* v3 expire (via ioctl) */
  57struct autofs_packet_expire {
  58        struct autofs_packet_hdr hdr;
  59        int len;
  60        char name[NAME_MAX+1];
  61};
  62
  63#define AUTOFS_IOC_READY      _IO(0x93, 0x60)
  64#define AUTOFS_IOC_FAIL       _IO(0x93, 0x61)
  65#define AUTOFS_IOC_CATATONIC  _IO(0x93, 0x62)
  66#define AUTOFS_IOC_PROTOVER   _IOR(0x93, 0x63, int)
  67#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93, 0x64, compat_ulong_t)
  68#define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93, 0x64, unsigned long)
  69#define AUTOFS_IOC_EXPIRE     _IOR(0x93, 0x65, struct autofs_packet_expire)
  70
  71#endif /* _UAPI_LINUX_AUTO_FS_H */
  72