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 extern const char *afs_voltypes[];
  30
  31 typedef enum {
  32         AFS_FTYPE_INVALID       = 0,
  33         AFS_FTYPE_FILE          = 1,
  34         AFS_FTYPE_DIR           = 2,
  35         AFS_FTYPE_SYMLINK       = 3,
  36 } afs_file_type_t;
  37
  38 #ifdef __KERNEL__
  39
  40 struct afs_cell;
  41 struct afs_vnode;
  42
  43 /*****************************************************************************/
  44 /*
  45  * AFS file identifier
  46  */
  47 struct afs_fid
  48 {
  49         afs_volid_t     vid;            /* volume ID */
  50         afs_vnodeid_t   vnode;          /* file index within volume */
  51         unsigned        unique;         /* unique ID number (file index version) */
  52 };
  53
  54 /*****************************************************************************/
  55 /*
  56  * AFS callback notification
  57  */
  58 typedef enum {
  59         AFSCM_CB_UNTYPED        = 0,    /* no type set on CB break */
  60         AFSCM_CB_EXCLUSIVE      = 1,    /* CB exclusive to CM [not implemented] */
  61         AFSCM_CB_SHARED         = 2,    /* CB shared by other CM's */
  62         AFSCM_CB_DROPPED        = 3,    /* CB promise cancelled by file server */
  63 } afs_callback_type_t;
  64
  65 struct afs_callback
  66 {
  67         struct afs_server       *server;        /* server that made the promise */
  68         struct afs_fid          fid;            /* file identifier */
  69         unsigned                version;        /* callback version */
  70         unsigned                expiry;         /* time at which expires */
  71         afs_callback_type_t     type;           /* type of callback */
  72 };
  73
  74 #define AFSCBMAX 50
  75
  76 /*****************************************************************************/
  77 /*
  78  * AFS volume information
  79  */
  80 struct afs_volume_info
  81 {
  82         afs_volid_t             vid;            /* volume ID */
  83         afs_voltype_t           type;           /* type of this volume */
  84         afs_volid_t             type_vids[5];   /* volume ID's for possible types for this vol */
  85
  86         /* list of fileservers serving this volume */
  87         size_t                  nservers;       /* number of entries used in servers[] */
  88         struct {
  89                 struct in_addr  addr;           /* fileserver address */
  90         } servers[8];
  91 };
  92
  93 /*****************************************************************************/
  94 /*
  95  * AFS file status information
  96  */
  97 struct afs_file_status
  98 {
  99         unsigned                if_version;     /* interface version */
 100 #define AFS_FSTATUS_VERSION     1
 101
 102         afs_file_type_t         type;           /* file type */
 103         unsigned                nlink;          /* link count */
 104         size_t                  size;           /* file size */
 105         afs_dataversion_t       version;        /* current data version */
 106         unsigned                author;         /* author ID */
 107         unsigned                owner;          /* owner ID */
 108         unsigned                caller_access;  /* access rights for authenticated caller */
 109         unsigned                anon_access;    /* access rights for unauthenticated caller */
 110         umode_t                 mode;           /* UNIX mode */
 111         struct afs_fid          parent;         /* parent file ID */
 112         time_t                  mtime_client;   /* last time client changed data */
 113         time_t                  mtime_server;   /* last time server changed data */
 114 };
 115
 116 /*****************************************************************************/
 117 /*
 118  * AFS volume synchronisation information
 119  */
 120 struct afs_volsync
 121 {
 122         time_t                  creation;       /* volume creation time */
 123 };
 124
 125 #endif /* __KERNEL__ */
 126
 127 #endif /* _LINUX_AFS_TYPES_H */