src/ubik/ubik.p.h

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 #ifndef UBIK_H
  11 #define UBIK_H
  12
  13 #include <stdarg.h>
  14
  15 #include <ubik_int.h>
  16
  17 /*! \name ubik_trans types */
  18 #define UBIK_READTRANS      0
  19 #define UBIK_WRITETRANS     1
  20 /*\}*/
  21
  22 /*! \name ubik_lock types */
  23 #define LOCKREAD            1
  24 #define LOCKWRITE           2
  25 #define LOCKWAIT            3
  26 /*\}*/
  27
  28 /*! \name ubik client flags */
  29 #define UPUBIKONLY          1   /*!< only check servers presumed functional */
  30 #define UBIK_CALL_NEW       2   /*!< use the semantics of ubik_Call_New */
  31 /*\}*/
  32
  33 /*! \name RX services types */
  34 #define VOTE_SERVICE_ID     50
  35 #define DISK_SERVICE_ID     51
  36 #define USER_SERVICE_ID     52  /*!< Since most applications use same port! */
  37 /*\}*/
  38
  39 #define UBIK_MAGIC      0x354545
  40
  41 /*! \name global ubik parameters */
  42 #define MAXSERVERS          20  /*!< max number of servers */
  43 /*\}*/
  44
  45 /*! version comparison macro */
  46 #define vcmp(a,b) ((a).epoch == (b).epoch? ((a).counter - (b).counter) : ((a).epoch - (b).epoch))
  47
  48 /*! \name ubik_client state bits */
  49 #define CFLastFailed        1   /*!< last call failed to this guy (to detect down hosts) */
  50 /*\}*/
  51
  52 #ifdef AFS_PTHREAD_ENV
  53 #include <pthread.h>
  54 #else
  55 #include <lwp.h>
  56 #endif
  57
  58 /*!
  59  * \brief per-client structure for ubik
  60  */
  61 struct ubik_client {
  62     short initializationState;  /*!< ubik client init state */
  63     short states[MAXSERVERS];   /*!< state bits */
  64     struct rx_connection *conns[MAXSERVERS];
  65     afs_int32 syncSite;
  66 #ifdef AFS_PTHREAD_ENV
  67     pthread_mutex_t cm;
  68 #endif
  69 };
  70
  71 #ifdef AFS_PTHREAD_ENV
  72 #define LOCK_UBIK_CLIENT(client) opr_mutex_enter(&client->cm)
  73 #define UNLOCK_UBIK_CLIENT(client) opr_mutex_exit(&client->cm)
  74 #else
  75 #define LOCK_UBIK_CLIENT(client)
  76 #define UNLOCK_UBIK_CLIENT(client)
  77 #endif
  78
  79 #define ubik_GetRPCConn(astr,aindex)    ((aindex) >= MAXSERVERS? 0 : (astr)->conns[aindex])
  80 #define ubik_GetRPCHost(astr,aindex)    ((aindex) >= MAXSERVERS? 0 : (astr)->hosts[aindex])
  81
  82 /*!
  83  * \brief ubik header file structure
  84  */
  85 struct ubik_hdr {
  86     afs_int32 magic;            /*!< magic number */
  87     short pad1;                 /*!< some 0-initd padding */
  88     short size;                 /*!< header allocation size */
  89     struct ubik_version version;        /*!< the version for this file */
  90 };
  91
  92 /*!
  93  * \brief representation of a ubik transaction
  94  */
  95 struct ubik_trans {
  96     struct ubik_dbase *dbase;   /*!< corresponding database */
  97     struct ubik_trans *next;    /*!< in the list */
  98     afs_int32 locktype;         /*!< transaction lock */
  99     struct ubik_trunc *activeTruncs;    /*!< queued truncates */
 100     struct ubik_tid tid;        /*!< transaction id of this trans (if write trans.) */
 101     afs_int32 minCommitTime;    /*!< time before which this trans can't commit */
 102     afs_int32 seekFile;         /*!< seek ptr: file number */
 103     afs_int32 seekPos;          /*!< seek ptr: offset therein */
 104     short flags;                /*!< trans flag bits */
 105     char type;                  /*!< type of trans */
 106     iovec_wrt iovec_info;
 107     iovec_buf iovec_data;
 108 };
 109
 110 /*!
 111  * \brief representation of a truncation operation
 112  */
 113 struct ubik_trunc {
 114     struct ubik_trunc *next;
 115     afs_int32 file;             /*!< file to truncate */
 116     afs_int32 length;           /*!< new size */
 117 };
 118
 119 struct ubik_stat {
 120     afs_int32 size;
 121     afs_int32 mtime;
 122 };
 123
 124 #include <lock.h>               /* just to make sure we've got this */
 125
 126 /*!
 127  * \brief representation of a ubik database.
 128  *
 129  * Contains info on low-level disk access routines
 130  * for use by disk transaction module.
 131  */
 132 struct ubik_dbase {
 133     char *pathName;             /*!< root name for dbase */
 134     struct ubik_trans *activeTrans;     /*!< active transaction list */
 135     struct ubik_version version;        /*!< version number */
 136 #ifdef AFS_PTHREAD_ENV
 137     pthread_mutex_t versionLock;        /*!< lock on version number */
 138 #else
 139     struct Lock versionLock;    /*!< lock on version number */
 140 #endif
 141     afs_int32 tidCounter;       /*!< last RW or RO trans tid counter */
 142     afs_int32 writeTidCounter;  /*!< last write trans tid counter */
 143     afs_int32 flags;            /*!< flags */
 144     /* physio procedures */
 145     int (*read) (struct ubik_dbase * adbase, afs_int32 afile, void *abuffer,
 146                  afs_int32 apos, afs_int32 alength);
 147     int (*write) (struct ubik_dbase * adbase, afs_int32 afile, void *abuffer,
 148                   afs_int32 apos, afs_int32 alength);
 149     int (*truncate) (struct ubik_dbase * adbase, afs_int32 afile,
 150                      afs_int32 asize);
 151     int (*sync) (struct ubik_dbase * adbase, afs_int32 afile);
 152     int (*stat) (struct ubik_dbase * adbase, afs_int32 afid,
 153                  struct ubik_stat * astat);
 154     void (*open) (struct ubik_dbase * adbase, afs_int32 afid);
 155     int (*setlabel) (struct ubik_dbase * adbase, afs_int32 afile, struct ubik_version * aversion);      /*!< set the version label */
 156     int (*getlabel) (struct ubik_dbase * adbase, afs_int32 afile, struct ubik_version * aversion);      /*!< retrieve the version label */
 157     int (*getnfiles) (struct ubik_dbase * adbase);      /*!< find out number of files */
 158     short readers;              /*!< number of current read transactions */
 159     struct ubik_version cachedVersion;  /*!< version of caller's cached data */
 160     struct Lock cache_lock; /*!< protects cached application data */
 161 #ifdef AFS_PTHREAD_ENV
 162     pthread_cond_t version_cond;    /*!< condition variable to manage changes to version */
 163     pthread_cond_t flags_cond;      /*!< condition variable to manage changes to flags */
 164 #endif
 165 };
 166
 167 /**
 168  * ubik_CheckCache callback function.
 169  *
 170  * @param[in] atrans  ubik transaction
 171  * @param[in] rock    rock passed to ubik_CheckCache
 172  *
 173  * @return operation status
 174  *   @retval 0        cache was read properly
 175  */
 176 typedef int (*ubik_updatecache_func) (struct ubik_trans *atrans, void *rock);
 177
 178 /*! \name procedures for automatically authenticating ubik connections */
 179 extern int (*ubik_CRXSecurityProc) (void *, struct rx_securityClass **,
 180                                     afs_int32 *);
 181 extern void *ubik_CRXSecurityRock;
 182 extern int (*ubik_SRXSecurityProc) (void *, struct rx_securityClass **,
 183                                     afs_int32 *);
 184 extern void *ubik_SRXSecurityRock;
 185 extern int (*ubik_CheckRXSecurityProc) (void *, struct rx_call *);
 186 extern void *ubik_CheckRXSecurityRock;
 187
 188 extern void ubik_SetClientSecurityProcs(int (*scproc)(void *,
 189                                                       struct rx_securityClass **,
 190                                                       afs_int32 *),
 191                                         int (*checkproc) (void *),
 192                                         void *rock);
 193 extern void ubik_SetServerSecurityProcs
 194                 (void (*buildproc) (void *,
 195                                     struct rx_securityClass ***,
 196                                     afs_int32 *),
 197                  int (*checkproc) (void *, struct rx_call *),
 198                  void *rock);
 199
 200 /*\}*/
 201
 202 /*
 203  * For applications that make use of ubik_BeginTransReadAnyWrite, writing
 204  * processes must not update the application-level cache as they write,
 205  * or else readers can read the new cache before the data is committed to
 206  * the db. So, when a commit occurs, the cache must be updated right then.
 207  * If set, this function will be called during commits of write transactions,
 208  * to update the application-level cache after a write. This will be called
 209  * immediately after the local disk commit succeeds, and it will be called
 210  * with a lock held that prevents other threads from reading from the cache
 211  * or the db in general.
 212  *
 213  * Note that this function MUST be set in order to make use of
 214  * ubik_BeginTransReadAnyWrite.
 215  */
 216 extern int (*ubik_SyncWriterCacheProc) (void);
 217
 218 /****************INTERNALS BELOW ****************/
 219
 220 #ifdef UBIK_INTERNALS
 221 /*! \name some ubik parameters */
 222 #define UBIK_PAGESIZE       1024        /*!< fits in current r packet */
 223 #define UBIK_LOGPAGESIZE    10  /*!< base 2 log thereof */
 224 #define NBUFFERS            20  /*!< number of 1K buffers */
 225 #define HDRSIZE             64  /*!< bytes of header per dbfile */
 226 /*\}*/
 227
 228 /*! \name ubik_dbase flags */
 229 #define DBWRITING           1   /*!< are any write trans. in progress */
 230 /*\}*/
 231
 232 /*!\name ubik trans flags */
 233 #define TRDONE              1   /*!< commit or abort done */
 234 #define TRABORT             2   /*!< if #TRDONE, tells if aborted */
 235 #define TRREADANY           4   /*!< read any data available in trans */
 236 #define TRCACHELOCKED       32  /*!< this trans has locked dbase->cache_lock
 237                                  *   (meaning, this trans has called
 238                                  *   ubik_CheckCache at some point */
 239 #define TRREADWRITE         64  /*!< read even if there's a conflicting ubik-
 240                                  *   level write lock */
 241 /*\}*/
 242
 243 /*! \name ubik_lock flags */
 244 #define LWANT               1
 245 /*\}*/
 246
 247 /*! \name ubik system database numbers */
 248 #define LOGFILE             (-1)
 249 /*\}*/
 250
 251 /*! \name define log opcodes */
 252 #define LOGNEW              100 /*!< start transaction */
 253 #define LOGEND              101 /*!< commit (good) end transaction */
 254 #define LOGABORT            102 /*!< abort (fail) transaction */
 255 #define LOGDATA             103 /*!< data */
 256 #define LOGTRUNCATE         104 /*!< truncate operation */
 257 /*\}*/
 258
 259 /*!
 260  * \name timer constants
 261  * time constant for replication algorithms: the R time period is 20 seconds.  Both
 262  * #SMALLTIME and #BIGTIME must be larger than #RPCTIMEOUT+max(#RPCTIMEOUT, #POLLTIME),
 263  * so that timeouts do not prevent us from getting through to our servers in time.
 264  *
 265  * We use multi-R to time out multiple down hosts concurrently.
 266  * The only other restrictions:  #BIGTIME > #SMALLTIME and
 267  * #BIGTIME-#SMALLTIME > #MAXSKEW (the clock skew).
 268  */
 269 #define MAXSKEW 10
 270 #define POLLTIME 15
 271 #define RPCTIMEOUT 20
 272 #define BIGTIME 75
 273 #define SMALLTIME 60
 274 /*\}*/
 275
 276 /*!
 277  * \brief the per-server state, used by the sync site to keep track of its charges
 278  */
 279 struct ubik_server {
 280     struct ubik_server *next;   /*!< next ptr */
 281     afs_uint32 addr[UBIK_MAX_INTERFACE_ADDR];   /*!< network order, addr[0] is primary */
 282     afs_int32 lastVoteTime;     /*!< last time yes vote received */
 283     afs_int32 lastBeaconSent;   /*!< last time beacon attempted */
 284     struct ubik_version version;        /*!< version, only used during recovery */
 285     struct rx_connection *vote_rxcid;   /*!< cid to use to contact dude for votes */
 286     struct rx_connection *disk_rxcid;   /*!< cid to use to contact dude for disk reqs */
 287     char lastVote;              /*!< true if last vote was yes */
 288     char up;                    /*!< is it up? */
 289     char beaconSinceDown;       /*!< did beacon get through since last crash? */
 290     char currentDB;             /*!< is dbase up-to-date */
 291     char magic;                 /*!< the one whose vote counts twice */
 292     char isClone;               /*!< is only a clone, doesn't vote */
 293 };
 294
 295 /*! \name hold and release functions on a database */
 296 #ifdef AFS_PTHREAD_ENV
 297 # define        DBHOLD(a)       opr_mutex_enter(&((a)->versionLock))
 298 # define        DBRELE(a)       opr_mutex_exit(&((a)->versionLock))
 299 #else /* !AFS_PTHREAD_ENV */
 300 # define        DBHOLD(a)       ObtainWriteLock(&((a)->versionLock))
 301 # define        DBRELE(a)       ReleaseWriteLock(&((a)->versionLock))
 302 #endif /* !AFS_PTHREAD_ENV */
 303 /*\}*/
 304
 305 /* globals */
 306
 307 /*!name list of all servers in the system */
 308 extern struct ubik_server *ubik_servers;
 309 extern char amIClone;
 310 /*\}*/
 311
 312 /*! \name network port info */
 313 extern short ubik_callPortal;
 314 /*\}*/
 315
 316 /*! \name urecovery state bits for sync site */
 317 #define UBIK_RECSYNCSITE        1       /* am sync site */
 318 #define UBIK_RECFOUNDDB         2       /* found acceptable dbase from quorum */
 319 #define UBIK_RECHAVEDB          4       /* fetched best dbase */
 320 #define UBIK_RECLABELDB         8       /* relabelled dbase */
 321 #define UBIK_RECSENTDB          0x10    /* sent best db to *everyone* */
 322 #define UBIK_RECSBETTER         UBIK_RECLABELDB /* last state */
 323 /*\}*/
 324
 325 extern afs_int32 ubik_quorum;   /* min hosts in quorum */
 326 extern struct ubik_dbase *ubik_dbase;   /* the database handled by this server */
 327 extern afs_uint32 ubik_host[UBIK_MAX_INTERFACE_ADDR];   /* this host addr, in net order */
 328 extern int ubik_amSyncSite;     /* sleep on this waiting to be sync site */
 329 extern struct ubik_stats {      /* random stats */
 330     afs_int32 escapes;
 331 } ubik_stats;
 332 extern afs_int32 urecovery_state;       /* sync site recovery process state */
 333 extern struct ubik_trans *ubik_currentTrans;    /* current trans */
 334 extern afs_int32 ubik_debugFlag;        /* ubik debug flag */
 335 extern int ubikPrimaryAddrOnly; /* use only primary address */
 336
 337 /*
 338  * Lock ordering
 339  *
 340  * Any of the locks may be acquired singly; when acquiring multiple locks, they
 341  * should be acquired in the listed order:
 342  *      application cache lock  (dbase->cache_lock)
 343  *      database lock           DBHOLD/DBRELE
 344  *      beacon lock             UBIK_BEACON_LOCK/UNLOCK
 345  *      vote lock               UBIK_VOTE_LOCK/UNLOCK
 346  *      version lock            UBIK_VERSION_LOCK/UNLOCK
 347  *      server address lock     UBIK_ADDR_LOCK/UNLOCK
 348  */
 349
 350 /*!
 351  * \brief Global beacon data.  All values are protected by beacon_lock
 352  * This lock also protects some values in the ubik_server structures:
 353  *      lastVoteTime
 354  *      lastBeaconSent
 355  *      lastVote
 356  *      up
 357  *      beaconSinceDown
 358  */
 359 struct beacon_data {
 360 #ifdef AFS_PTHREAD_ENV
 361     pthread_mutex_t beacon_lock;
 362 #endif
 363     int ubik_amSyncSite;                /*!< flag telling if I'm sync site */
 364     afs_int32 syncSiteUntil;            /*!< valid only if amSyncSite */
 365     int ubik_syncSiteAdvertised;        /*!< flag telling if remotes are aware we have quorum */
 366 };
 367
 368 #define UBIK_BEACON_LOCK opr_mutex_enter(&beacon_globals.beacon_lock)
 369 #define UBIK_BEACON_UNLOCK opr_mutex_exit(&beacon_globals.beacon_lock)
 370
 371 /*!
 372  * \brief Global vote data.  All values are protected by vote_lock
 373  */
 374 struct vote_data {
 375 #ifdef AFS_PTHREAD_ENV
 376     pthread_mutex_t vote_lock;
 377 #endif
 378     struct ubik_version ubik_dbVersion; /* sync site's dbase version */
 379     struct ubik_tid ubik_dbTid;         /* sync site's tid, or 0 if none */
 380     /* Used by all sites in nominating new sync sites */
 381     afs_int32 ubik_lastYesTime;         /* time we sent the last yes vote */
 382     afs_uint32 lastYesHost;             /* host to which we sent yes vote */
 383     /* Next is time sync site began this vote: guarantees sync site until this + SMALLTIME */
 384     afs_int32 lastYesClaim;
 385     int lastYesState;                   /* did last site we voted for claim to be sync site? */
 386     /* Used to guarantee that nomination process doesn't loop */
 387     afs_int32 lowestTime;
 388     afs_uint32 lowestHost;
 389     afs_int32 syncTime;
 390     afs_int32 syncHost;
 391 };
 392
 393 #define UBIK_VOTE_LOCK opr_mutex_enter(&vote_globals.vote_lock)
 394 #define UBIK_VOTE_UNLOCK opr_mutex_exit(&vote_globals.vote_lock)
 395
 396 /*!
 397  * \brief Server address data.  All values are protected by addr_lock
 398  *
 399  * This lock also protects:
 400  *     ubik_server: addr[], vote_rxcid, disk_rxcid
 401  *
 402  */
 403 struct addr_data {
 404 #ifdef AFS_PTHREAD_ENV
 405     pthread_mutex_t addr_lock;
 406 #endif
 407     afs_int32 ubikSecIndex;
 408     struct rx_securityClass *ubikSecClass;
 409 };
 410
 411 #define UBIK_ADDR_LOCK opr_mutex_enter(&addr_globals.addr_lock)
 412 #define UBIK_ADDR_UNLOCK opr_mutex_exit(&addr_globals.addr_lock)
 413
 414 /*!
 415  * \brief The version lock protects the structure member, as well as
 416  * the database version, flags, tidCounter, writeTidCounter
 417  */
 418 struct version_data {
 419 #ifdef AFS_PTHREAD_ENV
 420     pthread_mutex_t version_lock;
 421 #endif
 422     afs_int32 ubik_epochTime;   /* time when this site started */
 423 };
 424
 425 #define UBIK_VERSION_LOCK opr_mutex_enter(&version_globals.version_lock)
 426 #define UBIK_VERSION_UNLOCK opr_mutex_exit(&version_globals.version_lock)
 427
 428 /* phys.c */
 429 extern int uphys_stat(struct ubik_dbase *adbase, afs_int32 afid,
 430                       struct ubik_stat *astat);
 431 extern int uphys_read(struct ubik_dbase *adbase, afs_int32 afile,
 432                       void *abuffer, afs_int32 apos,
 433                       afs_int32 alength);
 434 extern int uphys_write(struct ubik_dbase *adbase, afs_int32 afile,
 435                        void *abuffer, afs_int32 apos,
 436                        afs_int32 alength);
 437 extern int uphys_truncate(struct ubik_dbase *adbase, afs_int32 afile,
 438                           afs_int32 asize);
 439 extern int uphys_getnfiles(struct ubik_dbase *adbase);
 440 extern int uphys_getlabel(struct ubik_dbase *adbase, afs_int32 afile,
 441                           struct ubik_version *aversion);
 442 extern int uphys_setlabel(struct ubik_dbase *adbase, afs_int32 afile,
 443                           struct ubik_version *aversion);
 444 extern int uphys_sync(struct ubik_dbase *adbase, afs_int32 afile);
 445 extern void uphys_invalidate(struct ubik_dbase *adbase,
 446                              afs_int32 afid);
 447
 448 /*! \name recovery.c */
 449 extern int urecovery_ResetState(void);
 450 extern int urecovery_LostServer(struct ubik_server *server);
 451 extern int urecovery_AllBetter(struct ubik_dbase *adbase,
 452                                int areadAny);
 453 extern int urecovery_AbortAll(struct ubik_dbase *adbase);
 454 extern int urecovery_CheckTid(struct ubik_tid *atid, int abortalways);
 455 extern int urecovery_Initialize(struct ubik_dbase *adbase);
 456 extern void *urecovery_Interact(void *);
 457 extern int DoProbe(struct ubik_server *server);
 458 /*\}*/
 459
 460 /*! \name ubik.c */
 461 extern afs_int32 ContactQuorum_NoArguments(afs_int32 (*proc)
 462                                                        (struct rx_connection *,
 463                                                         ubik_tid *),
 464                                            struct ubik_trans *atrans,
 465                                            int aflags);
 466
 467 extern afs_int32 ContactQuorum_DISK_Lock(struct ubik_trans *atrans,
 468                                          int aflags,
 469                                          afs_int32 file, afs_int32 position,
 470                                          afs_int32 length, afs_int32 type);
 471
 472 extern afs_int32 ContactQuorum_DISK_Write(struct ubik_trans *atrans,
 473                                           int aflags,
 474                                           afs_int32 file, afs_int32 position,
 475                                           bulkdata *data);
 476
 477 extern afs_int32 ContactQuorum_DISK_Truncate(struct ubik_trans *atrans,
 478                                              int aflags,
 479                                              afs_int32 file, afs_int32 length);
 480
 481 extern afs_int32 ContactQuorum_DISK_WriteV(struct ubik_trans *atrans,
 482                                            int aflags,
 483                                            iovec_wrt * io_vector,
 484                                            iovec_buf *io_buffer);
 485
 486 extern afs_int32 ContactQuorum_DISK_SetVersion(struct ubik_trans *atrans,
 487                                                int aflags,
 488                                                ubik_version *OldVersion,
 489                                                ubik_version *NewVersion);
 490
 491 extern void panic(char *format, ...)
 492     AFS_ATTRIBUTE_FORMAT(__printf__, 1, 2);
 493
 494 extern afs_uint32 ubikGetPrimaryInterfaceAddr(afs_uint32 addr);
 495
 496 extern int ubik_CheckAuth(struct rx_call *);
 497
 498 /*\}*/
 499
 500 /*! \name beacon.c */
 501 struct afsconf_cell;
 502 extern void ubeacon_InitSecurityClass(void);
 503 extern void ubeacon_ReinitServer(struct ubik_server *ts);
 504 extern void ubeacon_Debug(struct ubik_debug *aparm);
 505 extern int ubeacon_AmSyncSite(void);
 506 extern int ubeacon_SyncSiteAdvertised(void);
 507 extern int ubeacon_InitServerListByInfo(afs_uint32 ame,
 508                                         struct afsconf_cell *info,
 509                                         char clones[]);
 510 extern int ubeacon_InitServerList(afs_uint32 ame, afs_uint32 aservers[]);
 511 extern void *ubeacon_Interact(void *);
 512 extern int ubeacon_updateUbikNetworkAddress(afs_uint32 ubik_host[]);
 513 extern struct beacon_data beacon_globals;
 514 extern struct addr_data addr_globals;
 515
 516 /*\}*/
 517
 518 /*! \name disk.c */
 519 extern int udisk_Init(int nBUffers);
 520 extern void udisk_Debug(struct ubik_debug *aparm);
 521 extern int udisk_Invalidate(struct ubik_dbase *adbase, afs_int32 afid);
 522 extern int udisk_read(struct ubik_trans *atrans, afs_int32 afile,
 523                       void *abuffer, afs_int32 apos, afs_int32 alen);
 524 extern int udisk_truncate(struct ubik_trans *atrans, afs_int32 afile,
 525                           afs_int32 alength);
 526 extern int udisk_write(struct ubik_trans *atrans, afs_int32 afile,
 527                        void *abuffer, afs_int32 apos, afs_int32 alen);
 528 extern int udisk_begin(struct ubik_dbase *adbase, int atype,
 529                        struct ubik_trans **atrans);
 530 extern int udisk_commit(struct ubik_trans *atrans);
 531 extern int udisk_abort(struct ubik_trans *atrans);
 532 extern int udisk_end(struct ubik_trans *atrans);
 533 /*\}*/
 534
 535 /*! \name lock.c */
 536 extern void ulock_Init(void);
 537 extern int  ulock_getLock(struct ubik_trans *atrans, int atype, int await);
 538 extern void ulock_relLock(struct ubik_trans *atrans);
 539 extern void ulock_Debug(struct ubik_debug *aparm);
 540 /*\}*/
 541
 542 /*! \name vote.c */
 543 extern int uvote_ShouldIRun(void);
 544 extern afs_int32 uvote_GetSyncSite(void);
 545 extern int uvote_Init(void);
 546 extern void ubik_vprint(const char *format, va_list ap)
 547     AFS_ATTRIBUTE_FORMAT(__printf__, 1, 0);
 548
 549 extern void ubik_print(const char *format, ...)
 550     AFS_ATTRIBUTE_FORMAT(__printf__, 1, 2);
 551
 552 extern void ubik_dprint(const char *format, ...)
 553     AFS_ATTRIBUTE_FORMAT(__printf__, 1, 2);
 554
 555 extern void ubik_dprint_25(const char *format, ...)
 556     AFS_ATTRIBUTE_FORMAT(__printf__, 1, 2);
 557 extern struct vote_data vote_globals;
 558 extern void uvote_set_dbVersion(struct ubik_version);
 559 extern int uvote_eq_dbVersion(struct ubik_version);
 560 extern int uvote_HaveSyncAndVersion(struct ubik_version);
 561 /*\}*/
 562
 563 #endif /* UBIK_INTERNALS */
 564
 565 extern afs_int32 ubik_nBuffers;
 566
 567 /*!
 568  * \name Public function prototypes
 569  */
 570
 571 /*! \name ubik.c */
 572 struct afsconf_cell;
 573 extern int ubik_ServerInitByInfo(afs_uint32 myHost, short myPort,
 574                                  struct afsconf_cell *info, char clones[],
 575                                  const char *pathName,
 576                                  struct ubik_dbase **dbase);
 577 extern int ubik_ServerInit(afs_uint32 myHost, short myPort,
 578                            afs_uint32 serverList[],
 579                            const char *pathName, struct ubik_dbase **dbase);
 580 extern int ubik_BeginTrans(struct ubik_dbase *dbase,
 581                            afs_int32 transMode, struct ubik_trans **transPtr);
 582 extern int ubik_BeginTransReadAny(struct ubik_dbase *dbase,
 583                                   afs_int32 transMode,
 584                                   struct ubik_trans **transPtr);
 585 extern int ubik_BeginTransReadAnyWrite(struct ubik_dbase *dbase,
 586                                        afs_int32 transMode,
 587                                        struct ubik_trans **transPtr);
 588 extern int ubik_AbortTrans(struct ubik_trans *transPtr);
 589
 590 extern int ubik_EndTrans(struct ubik_trans *transPtr);
 591 extern int ubik_Read(struct ubik_trans *transPtr, void *buffer,
 592                      afs_int32 length);
 593 extern int ubik_Flush(struct ubik_trans *transPtr);
 594 extern int ubik_Write(struct ubik_trans *transPtr, void *buffer,
 595                       afs_int32 length);
 596 extern int ubik_Seek(struct ubik_trans *transPtr, afs_int32 fileid,
 597                      afs_int32 position);
 598 extern int ubik_Tell(struct ubik_trans *transPtr, afs_int32 * fileid,
 599                      afs_int32 * position);
 600 extern int ubik_Truncate(struct ubik_trans *transPtr,
 601                          afs_int32 length);
 602 extern int ubik_SetLock(struct ubik_trans *atrans, afs_int32 apos,
 603                         afs_int32 alen, int atype);
 604 extern int ubik_WaitVersion(struct ubik_dbase *adatabase,
 605                             struct ubik_version *aversion);
 606 extern int ubik_GetVersion(struct ubik_trans *atrans,
 607                            struct ubik_version *avers);
 608 extern int ubik_CheckCache(struct ubik_trans *atrans,
 609                            ubik_updatecache_func check,
 610                            void *rock);
 611 extern struct version_data version_globals;
 612 /*\}*/
 613
 614 /*! \name ubikclient.c */
 615
 616 extern int ubik_ParseClientList(int argc, char **argv, afs_uint32 * aothers);
 617 extern unsigned int afs_random(void);
 618 extern int ubik_ClientInit(struct rx_connection **serverconns,
 619                            struct ubik_client **aclient);
 620 extern afs_int32 ubik_ClientDestroy(struct ubik_client *aclient);
 621 extern struct rx_connection *ubik_RefreshConn(struct rx_connection *tc);
 622 #ifdef UBIK_LEGACY_CALLITER
 623 extern afs_int32 ubik_CallIter(int (*aproc) (), struct ubik_client *aclient,
 624                                afs_int32 aflags, int *apos, long p1, long p2,
 625                                long p3, long p4, long p5, long p6, long p7,
 626                                long p8, long p9, long p10, long p11, long p12,
 627                                long p13, long p14, long p15, long p16);
 628 extern afs_int32 ubik_Call_New(int (*aproc) (), struct ubik_client
 629                                *aclient, afs_int32 aflags, long p1, long p2,
 630                                long p3, long p4, long p5, long p6, long p7,
 631                                long p8, long p9, long p10, long p11, long p12,
 632                                long p13, long p14, long p15, long p16);
 633 #endif
 634 /*\}*/
 635
 636 /* \name ubikcmd.c */
 637 extern int ubik_ParseServerList(int argc, char **argv, afs_uint32 *ahost,
 638                                 afs_uint32 *aothers);
 639 /*\}*/
 640
 641 /* \name uinit.c */
 642
 643 struct rx_securityClass;
 644 struct afsconf_dir;
 645 extern int ugen_ClientInitCell(struct afsconf_dir *dir,
 646                                struct afsconf_cell *info,
 647                                int secFlags,
 648                                struct ubik_client **uclientp,
 649                                int maxservers, const char *serviceid,
 650                                int deadtime);
 651 extern int ugen_ClientInitServer(const char *confDir, char *cellName,
 652                                  int secFlags, struct ubik_client **uclientp,
 653                                  int maxservers, char *serviceid,
 654                                  int deadtime, afs_uint32 server,
 655                                  afs_uint32 port);
 656 extern int ugen_ClientInitFlags(const char *confDir, char *cellName,
 657                                 int secFlags, struct ubik_client **uclientp,
 658                                 int (*secproc) (struct rx_securityClass *,
 659                                                 afs_int32),
 660                                 int maxservers, char *serviceid,
 661                                 int deadtime);
 662 extern afs_int32 ugen_ClientInit(int noAuthFlag, const char *confDir,
 663                                  char *cellName, afs_int32 sauth,
 664                                  struct ubik_client **uclientp,
 665                                  int (*secproc) (struct rx_securityClass *sc,
 666                                                  afs_int32 scIndex),
 667                                  char *funcName,
 668                                  afs_int32 gen_rxkad_level,
 669                                  afs_int32 maxservers, char *serviceid,
 670                                  afs_int32 deadtime, afs_uint32 server,
 671                                  afs_uint32 port, afs_int32 usrvid);
 672
 673 #endif /* UBIK_H */