LXR linux/fs/afs/afs

   1/* AFS Volume Location Service client interface
   2 *
   3 * Copyright (C) 2002, 2007 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_VL_H
  13#define AFS_VL_H
  14
  15#include "afs.h"
  16
  17#define AFS_VL_PORT             7003    /* volume location service port */
  18#define VL_SERVICE              52      /* RxRPC service ID for the Volume Location service */
  19#define YFS_VL_SERVICE          2503    /* Service ID for AuriStor upgraded VL service */
  20
  21enum AFSVL_Operations {
  22        VLGETENTRYBYID          = 503,  /* AFS Get VLDB entry by ID */
  23        VLGETENTRYBYNAME        = 504,  /* AFS Get VLDB entry by name */
  24        VLPROBE                 = 514,  /* AFS probe VL service */
  25        VLGETENTRYBYIDU         = 526,  /* AFS Get VLDB entry by ID (UUID-variant) */
  26        VLGETENTRYBYNAMEU       = 527,  /* AFS Get VLDB entry by name (UUID-variant) */
  27        VLGETADDRSU             = 533,  /* AFS Get addrs for fileserver */
  28        YVLGETENDPOINTS         = 64002, /* YFS Get endpoints for file/volume server */
  29        VLGETCAPABILITIES       = 65537, /* AFS Get server capabilities */
  30};
  31
  32enum AFSVL_Errors {
  33        AFSVL_IDEXIST           = 363520,       /* Volume Id entry exists in vl database */
  34        AFSVL_IO                = 363521,       /* I/O related error */
  35        AFSVL_NAMEEXIST         = 363522,       /* Volume name entry exists in vl database */
  36        AFSVL_CREATEFAIL        = 363523,       /* Internal creation failure */
  37        AFSVL_NOENT             = 363524,       /* No such entry */
  38        AFSVL_EMPTY             = 363525,       /* Vl database is empty */
  39        AFSVL_ENTDELETED        = 363526,       /* Entry is deleted (soft delete) */
  40        AFSVL_BADNAME           = 363527,       /* Volume name is illegal */
  41        AFSVL_BADINDEX          = 363528,       /* Index is out of range */
  42        AFSVL_BADVOLTYPE        = 363529,       /* Bad volume type */
  43        AFSVL_BADSERVER         = 363530,       /* Illegal server number (out of range) */
  44        AFSVL_BADPARTITION      = 363531,       /* Bad partition number */
  45        AFSVL_REPSFULL          = 363532,       /* Run out of space for Replication sites */
  46        AFSVL_NOREPSERVER       = 363533,       /* No such Replication server site exists */
  47        AFSVL_DUPREPSERVER      = 363534,       /* Replication site already exists */
  48        AFSVL_RWNOTFOUND        = 363535,       /* Parent R/W entry not found */
  49        AFSVL_BADREFCOUNT       = 363536,       /* Illegal Reference Count number */
  50        AFSVL_SIZEEXCEEDED      = 363537,       /* Vl size for attributes exceeded */
  51        AFSVL_BADENTRY          = 363538,       /* Bad incoming vl entry */
  52        AFSVL_BADVOLIDBUMP      = 363539,       /* Illegal max volid increment */
  53        AFSVL_IDALREADYHASHED   = 363540,       /* RO/BACK id already hashed */
  54        AFSVL_ENTRYLOCKED       = 363541,       /* Vl entry is already locked */
  55        AFSVL_BADVOLOPER        = 363542,       /* Bad volume operation code */
  56        AFSVL_BADRELLOCKTYPE    = 363543,       /* Bad release lock type */
  57        AFSVL_RERELEASE         = 363544,       /* Status report: last release was aborted */
  58        AFSVL_BADSERVERFLAG     = 363545,       /* Invalid replication site server flag */
  59        AFSVL_PERM              = 363546,       /* No permission access */
  60        AFSVL_NOMEM             = 363547,       /* malloc/realloc failed to alloc enough memory */
  61};
  62
  63enum {
  64        YFS_SERVER_INDEX        = 0,
  65        YFS_SERVER_UUID         = 1,
  66        YFS_SERVER_ENDPOINT     = 2,
  67};
  68
  69enum {
  70        YFS_ENDPOINT_IPV4       = 0,
  71        YFS_ENDPOINT_IPV6       = 1,
  72};
  73
  74#define YFS_MAXENDPOINTS        16
  75
  76/*
  77 * maps to "struct vldbentry" in vvl-spec.pdf
  78 */
  79struct afs_vldbentry {
  80        char            name[65];               /* name of volume (with NUL char) */
  81        afs_voltype_t   type;                   /* volume type */
  82        unsigned        num_servers;            /* num servers that hold instances of this vol */
  83        unsigned        clone_id;               /* cloning ID */
  84
  85        unsigned        flags;
  86#define AFS_VLF_RWEXISTS        0x1000          /* R/W volume exists */
  87#define AFS_VLF_ROEXISTS        0x2000          /* R/O volume exists */
  88#define AFS_VLF_BACKEXISTS      0x4000          /* backup volume exists */
  89
  90        afs_volid_t     volume_ids[3];          /* volume IDs */
  91
  92        struct {
  93                struct in_addr  addr;           /* server address */
  94                unsigned        partition;      /* partition ID on this server */
  95                unsigned        flags;          /* server specific flags */
  96#define AFS_VLSF_NEWREPSITE     0x0001  /* Ignore all 'non-new' servers */
  97#define AFS_VLSF_ROVOL          0x0002  /* this server holds a R/O instance of the volume */
  98#define AFS_VLSF_RWVOL          0x0004  /* this server holds a R/W instance of the volume */
  99#define AFS_VLSF_BACKVOL        0x0008  /* this server holds a backup instance of the volume */
 100#define AFS_VLSF_UUID           0x0010  /* This server is referred to by its UUID */
 101#define AFS_VLSF_DONTUSE        0x0020  /* This server ref should be ignored */
 102        } servers[8];
 103};
 104
 105#define AFS_VLDB_MAXNAMELEN 65
 106
 107
 108struct afs_ListAddrByAttributes__xdr {
 109        __be32                  Mask;
 110#define AFS_VLADDR_IPADDR       0x1     /* Match by ->ipaddr */
 111#define AFS_VLADDR_INDEX        0x2     /* Match by ->index */
 112#define AFS_VLADDR_UUID         0x4     /* Match by ->uuid */
 113        __be32                  ipaddr;
 114        __be32                  index;
 115        __be32                  spare;
 116        struct afs_uuid__xdr    uuid;
 117};
 118
 119struct afs_uvldbentry__xdr {
 120        __be32                  name[AFS_VLDB_MAXNAMELEN];
 121        __be32                  nServers;
 122        struct afs_uuid__xdr    serverNumber[AFS_NMAXNSERVERS];
 123        __be32                  serverUnique[AFS_NMAXNSERVERS];
 124        __be32                  serverPartition[AFS_NMAXNSERVERS];
 125        __be32                  serverFlags[AFS_NMAXNSERVERS];
 126        __be32                  volumeId[AFS_MAXTYPES];
 127        __be32                  cloneId;
 128        __be32                  flags;
 129        __be32                  spares1;
 130        __be32                  spares2;
 131        __be32                  spares3;
 132        __be32                  spares4;
 133        __be32                  spares5;
 134        __be32                  spares6;
 135        __be32                  spares7;
 136        __be32                  spares8;
 137        __be32                  spares9;
 138};
 139
 140struct afs_address_list {
 141        refcount_t              usage;
 142        unsigned int            version;
 143        unsigned int            nr_addrs;
 144        struct sockaddr_rxrpc   addrs[];
 145};
 146
 147extern void afs_put_address_list(struct afs_address_list *alist);
 148
 149#endif /* AFS_VL_H */
 150