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            5
  23 #define AUTOFS_MIN_PROTO_VERSION        3
  24 #define AUTOFS_MAX_PROTO_VERSION        5
  25
  26 #define AUTOFS_PROTO_SUBVERSION         0
  27
  28 /* Mask for expire behaviour */
  29 #define AUTOFS_EXP_IMMEDIATE            1
  30 #define AUTOFS_EXP_LEAVES               2
  31
  32 /* Daemon notification packet types */
  33 enum autofs_notify {
  34         NFY_NONE,
  35         NFY_MOUNT,
  36         NFY_EXPIRE
  37 };
  38
  39 /* Kernel protocol version 4 packet types */
  40
  41 /* Expire entry (umount request) */
  42 #define autofs_ptype_expire_multi       2
  43
  44 /* Kernel protocol version 5 packet types */
  45
  46 /* Indirect mount missing and expire requests. */
  47 #define autofs_ptype_missing_indirect   3
  48 #define autofs_ptype_expire_indirect    4
  49
  50 /* Direct mount missing and expire requests */
  51 #define autofs_ptype_missing_direct     5
  52 #define autofs_ptype_expire_direct      6
  53
  54 /* v4 multi expire (via pipe) */
  55 struct autofs_packet_expire_multi {
  56         struct autofs_packet_hdr hdr;
  57         autofs_wqt_t wait_queue_token;
  58         int len;
  59         char name[NAME_MAX+1];
  60 };
  61
  62 union autofs_packet_union {
  63         struct autofs_packet_hdr hdr;
  64         struct autofs_packet_missing missing;
  65         struct autofs_packet_expire expire;
  66         struct autofs_packet_expire_multi expire_multi;
  67 };
  68
  69 /* autofs v5 common packet struct */
  70 struct autofs_v5_packet {
  71         struct autofs_packet_hdr hdr;
  72         autofs_wqt_t wait_queue_token;
  73         __u32 dev;
  74         __u64 ino;
  75         __u32 uid;
  76         __u32 gid;
  77         __u32 pid;
  78         __u32 tgid;
  79         __u32 len;
  80         char name[NAME_MAX+1];
  81 };
  82
  83 typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
  84 typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
  85 typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
  86 typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
  87
  88 union autofs_v5_packet_union {
  89         struct autofs_packet_hdr hdr;
  90         struct autofs_v5_packet v5_packet;
  91         autofs_packet_missing_indirect_t missing_indirect;
  92         autofs_packet_expire_indirect_t expire_indirect;
  93         autofs_packet_missing_direct_t missing_direct;
  94         autofs_packet_expire_direct_t expire_direct;
  95 };
  96
  97 #define AUTOFS_IOC_EXPIRE_MULTI         _IOW(0x93,0x66,int)
  98 #define AUTOFS_IOC_EXPIRE_INDIRECT      AUTOFS_IOC_EXPIRE_MULTI
  99 #define AUTOFS_IOC_EXPIRE_DIRECT        AUTOFS_IOC_EXPIRE_MULTI
 100 #define AUTOFS_IOC_PROTOSUBVER          _IOR(0x93,0x67,int)
 101 #define AUTOFS_IOC_ASKREGHOST           _IOR(0x93,0x68,int)
 102 #define AUTOFS_IOC_TOGGLEREGHOST        _IOR(0x93,0x69,int)
 103 #define AUTOFS_IOC_ASKUMOUNT            _IOR(0x93,0x70,int)
 104
 105
 106 #endif /* _LINUX_AUTO_FS4_H */