fs/afs/types.h

   1 /* types.h: AFS types
   2  *
   3  * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #ifndef _LINUX_AFS_TYPES_H
  13 #define _LINUX_AFS_TYPES_H
  14
  15 #ifdef __KERNEL__
  16 #include <rxrpc/types.h>
  17 #endif /* __KERNEL__ */
  18
  19 typedef unsigned                        afs_volid_t;
  20 typedef unsigned                        afs_vnodeid_t;
  21 typedef unsigned long long              afs_dataversion_t;
  22
  23 typedef enum {
  24         AFSVL_RWVOL,                    /* read/write volume */
  25         AFSVL_ROVOL,                    /* read-only volume */
  26         AFSVL_BACKVOL,                  /* backup volume */
  27 } __attribute__((packed)) afs_voltype_t;
  28
  29 typedef enum {
  30         AFS_FTYPE_INVALID       = 0,
  31         AFS_FTYPE_FILE          = 1,
  32         AFS_FTYPE_DIR           = 2,
  33         AFS_FTYPE_SYMLINK       = 3,
  34 } afs_file_type_t;
  35
  36 #ifdef __KERNEL__
  37
  38 struct afs_cell;
  39 struct afs_vnode;
  40
  41 /*****************************************************************************/
  42 /*
  43  * AFS file identifier
  44  */
  45 struct afs_fid
  46 {
  47         afs_volid_t     vid;            /* volume ID */
  48         afs_vnodeid_t   vnode;          /* file index within volume */
  49         unsigned        unique;         /* unique ID number (file index version) */
  50 };
  51
  52 /*****************************************************************************/
  53 /*
  54  * AFS callback notification
  55  */
  56 typedef enum {
  57         AFSCM_CB_UNTYPED        = 0,    /* no type set on CB break */
  58         AFSCM_CB_EXCLUSIVE      = 1,    /* CB exclusive to CM [not implemented] */
  59         AFSCM_CB_SHARED         = 2,    /* CB shared by other CM's */
  60         AFSCM_CB_DROPPED        = 3,    /* CB promise cancelled by file server */
  61 } afs_callback_type_t;
  62
  63 struct afs_callback
  64 {
  65         struct afs_server       *server;        /* server that made the promise */
  66         struct afs_fid          fid;            /* file identifier */
  67         unsigned                version;        /* callback version */
  68         unsigned                expiry;         /* time at which expires */
  69         afs_callback_type_t     type;           /* type of callback */
  70 };
  71
  72 #define AFSCBMAX 50
  73
  74 /*****************************************************************************/
  75 /*
  76  * AFS volume information
  77  */
  78 struct afs_volume_info
  79 {
  80         afs_volid_t             vid;            /* volume ID */
  81         afs_voltype_t           type;           /* type of this volume */
  82         afs_volid_t             type_vids[5];   /* volume ID's for possible types for this vol */
  83
  84         /* list of fileservers serving this volume */
  85         size_t                  nservers;       /* number of entries used in servers[] */
  86         struct {
  87                 struct in_addr  addr;           /* fileserver address */
  88         } servers[8];
  89 };
  90
  91 /*****************************************************************************/
  92 /*
  93  * AFS file status information
  94  */
  95 struct afs_file_status
  96 {
  97         unsigned                if_version;     /* interface version */
  98 #define AFS_FSTATUS_VERSION     1
  99
 100         afs_file_type_t         type;           /* file type */
 101         unsigned                nlink;          /* link count */
 102         size_t                  size;           /* file size */
 103         afs_dataversion_t       version;        /* current data version */
 104         unsigned                author;         /* author ID */
 105         unsigned                owner;          /* owner ID */
 106         unsigned                caller_access;  /* access rights for authenticated caller */
 107         unsigned                anon_access;    /* access rights for unauthenticated caller */
 108         umode_t                 mode;           /* UNIX mode */
 109         struct afs_fid          parent;         /* parent file ID */
 110         time_t                  mtime_client;   /* last time client changed data */
 111         time_t                  mtime_server;   /* last time server changed data */
 112 };
 113
 114 /*****************************************************************************/
 115 /*
 116  * AFS volume synchronisation information
 117  */
 118 struct afs_volsync
 119 {
 120         time_t                  creation;       /* volume creation time */
 121 };
 122
 123 #endif /* __KERNEL__ */
 124
 125 #endif /* _LINUX_AFS_TYPES_H */