fs/afs/types.h

   1 /* 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 AFS_TYPES_H
  13 #define AFS_TYPES_H
  14
  15 #include <rxrpc/types.h>
  16
  17 typedef unsigned                        afs_volid_t;
  18 typedef unsigned                        afs_vnodeid_t;
  19 typedef unsigned long long              afs_dataversion_t;
  20
  21 typedef enum {
  22         AFSVL_RWVOL,                    /* read/write volume */
  23         AFSVL_ROVOL,                    /* read-only volume */
  24         AFSVL_BACKVOL,                  /* backup volume */
  25 } __attribute__((packed)) afs_voltype_t;
  26
  27 typedef enum {
  28         AFS_FTYPE_INVALID       = 0,
  29         AFS_FTYPE_FILE          = 1,
  30         AFS_FTYPE_DIR           = 2,
  31         AFS_FTYPE_SYMLINK       = 3,
  32 } afs_file_type_t;
  33
  34 struct afs_cell;
  35 struct afs_vnode;
  36
  37 /*
  38  * AFS file identifier
  39  */
  40 struct afs_fid {
  41         afs_volid_t     vid;            /* volume ID */
  42         afs_vnodeid_t   vnode;          /* file index within volume */
  43         unsigned        unique;         /* unique ID number (file index version) */
  44 };
  45
  46 /*
  47  * AFS callback notification
  48  */
  49 typedef enum {
  50         AFSCM_CB_UNTYPED        = 0,    /* no type set on CB break */
  51         AFSCM_CB_EXCLUSIVE      = 1,    /* CB exclusive to CM [not implemented] */
  52         AFSCM_CB_SHARED         = 2,    /* CB shared by other CM's */
  53         AFSCM_CB_DROPPED        = 3,    /* CB promise cancelled by file server */
  54 } afs_callback_type_t;
  55
  56 struct afs_callback {
  57         struct afs_server       *server;        /* server that made the promise */
  58         struct afs_fid          fid;            /* file identifier */
  59         unsigned                version;        /* callback version */
  60         unsigned                expiry;         /* time at which expires */
  61         afs_callback_type_t     type;           /* type of callback */
  62 };
  63
  64 #define AFSCBMAX 50
  65
  66 /*
  67  * AFS volume information
  68  */
  69 struct afs_volume_info {
  70         afs_volid_t             vid;            /* volume ID */
  71         afs_voltype_t           type;           /* type of this volume */
  72         afs_volid_t             type_vids[5];   /* volume ID's for possible types for this vol */
  73
  74         /* list of fileservers serving this volume */
  75         size_t                  nservers;       /* number of entries used in servers[] */
  76         struct {
  77                 struct in_addr  addr;           /* fileserver address */
  78         } servers[8];
  79 };
  80
  81 /*
  82  * AFS file status information
  83  */
  84 struct afs_file_status {
  85         unsigned                if_version;     /* interface version */
  86 #define AFS_FSTATUS_VERSION     1
  87
  88         afs_file_type_t         type;           /* file type */
  89         unsigned                nlink;          /* link count */
  90         size_t                  size;           /* file size */
  91         afs_dataversion_t       version;        /* current data version */
  92         unsigned                author;         /* author ID */
  93         unsigned                owner;          /* owner ID */
  94         unsigned                caller_access;  /* access rights for authenticated caller */
  95         unsigned                anon_access;    /* access rights for unauthenticated caller */
  96         umode_t                 mode;           /* UNIX mode */
  97         struct afs_fid          parent;         /* parent file ID */
  98         time_t                  mtime_client;   /* last time client changed data */
  99         time_t                  mtime_server;   /* last time server changed data */
 100 };
 101
 102 /*
 103  * AFS volume synchronisation information
 104  */
 105 struct afs_volsync {
 106         time_t                  creation;       /* volume creation time */
 107 };
 108
 109 #endif /* AFS_TYPES_H */