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         1
  27
  28 /* Mask for expire behaviour */
  29 #define AUTOFS_EXP_IMMEDIATE            1
  30 #define AUTOFS_EXP_LEAVES               2
  31
  32 #define AUTOFS_TYPE_ANY                 0x0000
  33 #define AUTOFS_TYPE_INDIRECT            0x0001
  34 #define AUTOFS_TYPE_DIRECT              0x0002
  35 #define AUTOFS_TYPE_OFFSET              0x0004
  36
  37 /* Daemon notification packet types */
  38 enum autofs_notify {
  39         NFY_NONE,
  40         NFY_MOUNT,
  41         NFY_EXPIRE
  42 };
  43
  44 /* Kernel protocol version 4 packet types */
  45
  46 /* Expire entry (umount request) */
  47 #define autofs_ptype_expire_multi       2
  48
  49 /* Kernel protocol version 5 packet types */
  50
  51 /* Indirect mount missing and expire requests. */
  52 #define autofs_ptype_missing_indirect   3
  53 #define autofs_ptype_expire_indirect    4
  54
  55 /* Direct mount missing and expire requests */
  56 #define autofs_ptype_missing_direct     5
  57 #define autofs_ptype_expire_direct      6
  58
  59 /* v4 multi expire (via pipe) */
  60 struct autofs_packet_expire_multi {
  61         struct autofs_packet_hdr hdr;
  62         autofs_wqt_t wait_queue_token;
  63         int len;
  64         char name[NAME_MAX+1];
  65 };
  66
  67 union autofs_packet_union {
  68         struct autofs_packet_hdr hdr;
  69         struct autofs_packet_missing missing;
  70         struct autofs_packet_expire expire;
  71         struct autofs_packet_expire_multi expire_multi;
  72 };
  73
  74 /* autofs v5 common packet struct */
  75 struct autofs_v5_packet {
  76         struct autofs_packet_hdr hdr;
  77         autofs_wqt_t wait_queue_token;
  78         __u32 dev;
  79         __u64 ino;
  80         __u32 uid;
  81         __u32 gid;
  82         __u32 pid;
  83         __u32 tgid;
  84         __u32 len;
  85         char name[NAME_MAX+1];
  86 };
  87
  88 typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
  89 typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
  90 typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
  91 typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
  92
  93 union autofs_v5_packet_union {
  94         struct autofs_packet_hdr hdr;
  95         struct autofs_v5_packet v5_packet;
  96         autofs_packet_missing_indirect_t missing_indirect;
  97         autofs_packet_expire_indirect_t expire_indirect;
  98         autofs_packet_missing_direct_t missing_direct;
  99         autofs_packet_expire_direct_t expire_direct;
 100 };
 101
 102 #define AUTOFS_IOC_EXPIRE_MULTI         _IOW(0x93,0x66,int)
 103 #define AUTOFS_IOC_EXPIRE_INDIRECT      AUTOFS_IOC_EXPIRE_MULTI
 104 #define AUTOFS_IOC_EXPIRE_DIRECT        AUTOFS_IOC_EXPIRE_MULTI
 105 #define AUTOFS_IOC_PROTOSUBVER          _IOR(0x93,0x67,int)
 106 #define AUTOFS_IOC_ASKUMOUNT            _IOR(0x93,0x70,int)
 107
 108
 109 #endif /* _LINUX_AUTO_FS4_H */