include/linux/auto_fs4.h

   1 /* -*- c -*-
   2  * linux/include/linux/auto_fs4.h
   3  *
   4  * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
   5  *
   6  * This file is part of the Linux kernel and is made available under
   7  * the terms of the GNU General Public License, version 2, or at your
   8  * option, any later version, incorporated herein by reference.
   9  */
  10
  11 #ifndef _LINUX_AUTO_FS4_H
  12 #define _LINUX_AUTO_FS4_H
  13
  14 /* Include common v3 definitions */
  15 #include <linux/auto_fs.h>
  16
  17 /* autofs v4 definitions */
  18 #undef AUTOFS_PROTO_VERSION
  19 #undef AUTOFS_MIN_PROTO_VERSION
  20 #undef AUTOFS_MAX_PROTO_VERSION
  21
  22 #define AUTOFS_PROTO_VERSION            4
  23 #define AUTOFS_MIN_PROTO_VERSION        3
  24 #define AUTOFS_MAX_PROTO_VERSION        4
  25
  26 #define AUTOFS_PROTO_SUBVERSION         7
  27
  28 /* Mask for expire behaviour */
  29 #define AUTOFS_EXP_IMMEDIATE            1
  30 #define AUTOFS_EXP_LEAVES               2
  31
  32 /* New message type */
  33 #define autofs_ptype_expire_multi       2       /* Expire entry (umount request) */
  34
  35 /* v4 multi expire (via pipe) */
  36 struct autofs_packet_expire_multi {
  37         struct autofs_packet_hdr hdr;
  38         autofs_wqt_t wait_queue_token;
  39         int len;
  40         char name[NAME_MAX+1];
  41 };
  42
  43 union autofs_packet_union {
  44         struct autofs_packet_hdr hdr;
  45         struct autofs_packet_missing missing;
  46         struct autofs_packet_expire expire;
  47         struct autofs_packet_expire_multi expire_multi;
  48 };
  49
  50 #define AUTOFS_IOC_EXPIRE_MULTI         _IOW(0x93,0x66,int)
  51 #define AUTOFS_IOC_PROTOSUBVER          _IOR(0x93,0x67,int)
  52 #define AUTOFS_IOC_ASKREGHOST           _IOR(0x93,0x68,int)
  53 #define AUTOFS_IOC_TOGGLEREGHOST        _IOR(0x93,0x69,int)
  54 #define AUTOFS_IOC_ASKUMOUNT            _IOR(0x93,0x70,int)
  55
  56
  57 #endif /* _LINUX_AUTO_FS4_H */