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 /*! Sanity check: This macro represents an arbitrary date in the past
  59  * (Tue Jun 20 15:36:43 2017). The database epoch must be greater or
  60  * equal to this value. */
  61 #define UBIK_MILESTONE      1497987403
  62
  63 /*!
  64  * \brief per-client structure for ubik
  65  */
  66 struct ubik_client {
  67     short initializationState;  /*!< ubik client init state */
  68     short states[MAXSERVERS];   /*!< state bits */
  69     struct rx_connection *conns[MAXSERVERS];
  70     afs_int32 syncSite;
  71 #ifdef AFS_PTHREAD_ENV
  72     pthread_mutex_t cm;
  73 #endif
  74 };
  75
  76 #ifdef AFS_PTHREAD_ENV
  77 #define LOCK_UBIK_CLIENT(client) opr_mutex_enter(&client->cm)
  78 #define UNLOCK_UBIK_CLIENT(client) opr_mutex_exit(&client->cm)
  79 #else
  80 #define LOCK_UBIK_CLIENT(client)
  81 #define UNLOCK_UBIK_CLIENT(client)
  82 #endif
  83
  84 #define ubik_GetRPCConn(astr,aindex)    ((aindex) >= MAXSERVERS? 0 : (astr)->conns[aindex])
  85 #define ubik_GetRPCHost(astr,aindex)    ((aindex) >= MAXSERVERS? 0 : (astr)->hosts[aindex])
  86
  87 /*!
  88  * \brief ubik header file structure
  89  */
  90 struct ubik_hdr {
  91     afs_int32 magic;            /*!< magic number */
  92     short pad1;                 /*!< some 0-initd padding */
  93     short size;                 /*!< header allocation size */
  94     struct ubik_version version;        /*!< the version for this file */
  95 };
  96
  97 /*!
  98  * \brief representation of a ubik transaction
  99  */
 100 struct ubik_trans {
 101     struct ubik_dbase *dbase;   /*!< corresponding database */
 102     struct ubik_trans *next;    /*!< in the list */
 103     afs_int32 locktype;         /*!< transaction lock */
 104     struct ubik_trunc *activeTruncs;    /*!< queued truncates */
 105     struct ubik_tid tid;        /*!< transaction id of this trans (if write trans.) */
 106     afs_int32 minCommitTime;    /*!< time before which this trans can't commit */
 107     afs_int32 seekFile;         /*!< seek ptr: file number */
 108     afs_int32 seekPos;          /*!< seek ptr: offset therein */
 109     short flags;                /*!< trans flag bits */
 110     char type;                  /*!< type of trans */
 111     iovec_wrt iovec_info;
 112     iovec_buf iovec_data;
 113 };
 114
 115 /*!
 116  * \brief representation of a truncation operation
 117  */
 118 struct ubik_trunc {
 119     struct ubik_trunc *next;
 120     afs_int32 file;             /*!< file to truncate */
 121     afs_int32 length;           /*!< new size */
 122 };
 123
 124 struct ubik_stat {
 125     afs_int32 size;
 126 };
 127
 128 #include <lock.h>               /* just to make sure we've got this */
 129
 130 /*!
 131  * \brief representation of a ubik database.
 132  *
 133  * Contains info on low-level disk access routines
 134  * for use by disk transaction module.
 135  */
 136 struct ubik_dbase {
 137     char *pathName;             /*!< root name for dbase */
 138     struct ubik_trans *activeTrans;     /*!< active transaction list */
 139     struct ubik_version version;        /*!< version number */
 140 #ifdef AFS_PTHREAD_ENV
 141     pthread_mutex_t versionLock;        /*!< lock on version number */
 142 #else
 143     struct Lock versionLock;    /*!< lock on version number */
 144 #endif
 145     afs_int32 tidCounter;       /*!< last RW or RO trans tid counter */
 146     afs_int32 writeTidCounter;  /*!< last write trans tid counter */
 147     afs_int32 flags;            /*!< flags */
 148     /* physio procedures */
 149     int (*read) (struct ubik_dbase * adbase, afs_int32 afile, void *abuffer,
 150                  afs_int32 apos, afs_int32 alength);
 151     int (*write) (struct ubik_dbase * adbase, afs_int32 afile, void *abuffer,
 152                   afs_int32 apos, afs_int32 alength);
 153     int (*truncate) (struct ubik_dbase * adbase, afs_int32 afile,
 154                      afs_int32 asize);
 155     int (*sync) (struct ubik_dbase * adbase, afs_int32 afile);
 156     int (*stat) (struct ubik_dbase * adbase, afs_int32 afid,
 157                  struct ubik_stat * astat);
 158     void (*open) (struct ubik_dbase * adbase, afs_int32 afid);
 159     int (*setlabel) (struct ubik_dbase * adbase, afs_int32 afile, struct ubik_version * aversion);      /*!< set the version label */
 160     int (*getlabel) (struct ubik_dbase * adbase, afs_int32 afile, struct ubik_version * aversion);      /*!< retrieve the version label */
 161     int (*getnfiles) (struct ubik_dbase * adbase);      /*!< find out number of files */
 162     int (*buffered_append)(struct ubik_dbase *adbase, afs_int32 afid, void *adata, afs_int32 alength);
 163     short readers;              /*!< number of current read transactions */
 164     struct ubik_version cachedVersion;  /*!< version of caller's cached data */
 165     struct Lock cache_lock; /*!< protects cached application data */
 166 #ifdef AFS_PTHREAD_ENV
 167     pthread_cond_t version_cond;    /*!< condition variable to manage changes to version */
 168     pthread_cond_t flags_cond;      /*!< condition variable to manage changes to flags */
 169 #endif
 170 };
 171
 172 /**
 173  * ubik_CheckCache callback function.
 174  *
 175  * @param[in] atrans  ubik transaction
 176  * @param[in] rock    rock passed to ubik_CheckCache
 177  *
 178  * @return operation status
 179  *   @retval 0        cache was read properly
 180  */
 181 typedef int (*ubik_updatecache_func) (struct ubik_trans *atrans, void *rock);
 182
 183 /*! \name procedures for automatically authenticating ubik connections */
 184 extern int (*ubik_CRXSecurityProc) (void *, struct rx_securityClass **,
 185                                     afs_int32 *);
 186 extern void *ubik_CRXSecurityRock;
 187 extern int (*ubik_SRXSecurityProc) (void *, struct rx_securityClass **,
 188                                     afs_int32 *);
 189 extern void *ubik_SRXSecurityRock;
 190 extern int (*ubik_CheckRXSecurityProc) (void *, struct rx_call *);
 191 extern void *ubik_CheckRXSecurityRock;
 192
 193 extern void ubik_SetClientSecurityProcs(int (*scproc)(void *,
 194                                                       struct rx_securityClass **,
 195                                                       afs_int32 *),
 196                                         int (*checkproc) (void *),
 197                                         void *rock);
 198 extern void ubik_SetServerSecurityProcs
 199                 (void (*buildproc) (void *,
 200                                     struct rx_securityClass ***,
 201                                     afs_int32 *),
 202                  int (*checkproc) (void *, struct rx_call *),
 203                  void *rock);
 204
 205 /*\}*/
 206
 207 /*
 208  * For applications that make use of ubik_BeginTransReadAnyWrite, writing
 209  * processes must not update the application-level cache as they write,
 210  * or else readers can read the new cache before the data is committed to
 211  * the db. So, when a commit occurs, the cache must be updated right then.
 212  * If set, this function will be called during commits of write transactions,
 213  * to update the application-level cache after a write. This will be called
 214  * immediately after the local disk commit succeeds, and it will be called
 215  * with a lock held that prevents other threads from reading from the cache
 216  * or the db in general.
 217  *
 218  * Note that this function MUST be set in order to make use of
 219  * ubik_BeginTransReadAnyWrite.
 220  */
 221 extern int (*ubik_SyncWriterCacheProc) (void);
 222
 223 /****************INTERNALS BELOW ****************/
 224
 225 #ifdef UBIK_INTERNALS
 226 /*! \name some ubik parameters */
 227 #define UBIK_PAGESIZE       1024        /*!< fits in current r packet */
 228 #define UBIK_LOGPAGESIZE    10  /*!< base 2 log thereof */
 229 #define NBUFFERS            20  /*!< number of 1K buffers */
 230 #define HDRSIZE             64  /*!< bytes of header per dbfile */
 231 /*\}*/
 232
 233 /*! \name ubik_dbase flags */
 234 #define DBWRITING           1   /*!< are any write trans. in progress */
 235 /*\}*/
 236
 237 /*!\name ubik trans flags */
 238 #define TRDONE              1   /*!< commit or abort done */
 239 #define TRABORT             2   /*!< if #TRDONE, tells if aborted */
 240 #define TRREADANY           4   /*!< read any data available in trans */
 241 #define TRCACHELOCKED       32  /*!< this trans has locked dbase->cache_lock
 242                                  *   (meaning, this trans has called
 243                                  *   ubik_CheckCache at some point */
 244 #define TRREADWRITE         64  /*!< read even if there's a conflicting ubik-
 245                                  *   level write lock */
 246 /*\}*/
 247
 248 /*! \name ubik_lock flags */
 249 #define LWANT               1
 250 /*\}*/
 251
 252 /*! \name ubik system database numbers */
 253 #define LOGFILE             (-1)
 254 /*\}*/
 255
 256 /*! \name define log opcodes */
 257 #define LOGNEW              100 /*!< start transaction */
 258 #define LOGEND              101 /*!< commit (good) end transaction */
 259 #define LOGABORT            102 /*!< abort (fail) transaction */
 260 #define LOGDATA             103 /*!< data */
 261 #define LOGTRUNCATE         104 /*!< truncate operation */
 262 /*\}*/
 263
 264 /*!
 265  * \name timer constants
 266  * time constant for replication algorithms: the R time period is 20 seconds.  Both
 267  * #SMALLTIME and #BIGTIME must be larger than #RPCTIMEOUT+max(#RPCTIMEOUT, #POLLTIME),
 268  * so that timeouts do not prevent us from getting through to our servers in time.
 269  *
 270  * We use multi-R to time out multiple down hosts concurrently.
 271  * The only other restrictions:  #BIGTIME > #SMALLTIME and
 272  * #BIGTIME-#SMALLTIME > #MAXSKEW (the clock skew).
 273  */
 274 #define MAXSKEW 10
 275 #define POLLTIME 15
 276 #define RPCTIMEOUT 20
 277 #define BIGTIME 75
 278 #define SMALLTIME 60
 279 /*\}*/
 280
 281 /*!
 282  * \brief the per-server state, used by the sync site to keep track of its charges
 283  */
 284 struct ubik_server {
 285     struct ubik_server *next;   /*!< next ptr */
 286     afs_uint32 addr[UBIK_MAX_INTERFACE_ADDR];   /*!< network order, addr[0] is primary */
 287     afs_int32 lastVoteTime;     /*!< last time yes vote received */
 288     afs_int32 lastBeaconSent;   /*!< last time beacon attempted */
 289     struct ubik_version version;        /*!< version, only used during recovery */
 290     struct rx_connection *vote_rxcid;   /*!< cid to use to contact dude for votes */
 291     struct rx_connection *disk_rxcid;   /*!< cid to use to contact dude for disk reqs */
 292     char lastVote;              /*!< true if last vote was yes */
 293     char up;                    /*!< is it up? */
 294     char beaconSinceDown;       /*!< did beacon get through since last crash? */
 295     char currentDB;             /*!< is dbase up-to-date */
 296     char magic;                 /*!< the one whose vote counts twice */
 297     char isClone;               /*!< is only a clone, doesn't vote */
 298 };
 299
 300 /*! \name hold and release functions on a database */
 301 #ifdef AFS_PTHREAD_ENV
 302 # define        DBHOLD(a)       opr_mutex_enter(&((a)->versionLock))
 303 # define        DBRELE(a)       opr_mutex_exit(&((a)->versionLock))
 304 #else /* !AFS_PTHREAD_ENV */
 305 # define        DBHOLD(a)       ObtainWriteLock(&((a)->versionLock))
 306 # define        DBRELE(a)       ReleaseWriteLock(&((a)->versionLock))
 307 #endif /* !AFS_PTHREAD_ENV */
 308 /*\}*/
 309
 310 /* globals */
 311
 312 /*!name list of all servers in the system */
 313 extern struct ubik_server *ubik_servers;
 314 extern char amIClone;
 315 /*\}*/
 316
 317 /*! \name network port info */
 318 extern short ubik_callPortal;
 319 /*\}*/
 320
 321 /*! \name urecovery state bits for sync site */
 322 #define UBIK_RECSYNCSITE        1       /* am sync site */
 323 #define UBIK_RECFOUNDDB         2       /* found acceptable dbase from quorum */
 324 #define UBIK_RECHAVEDB          4       /* fetched best dbase */
 325 #define UBIK_RECLABELDB         8       /* relabelled dbase */
 326 #define UBIK_RECSENTDB          0x10    /* sent best db to *everyone* */
 327 #define UBIK_RECSBETTER         UBIK_RECLABELDB /* last state */
 328 /*\}*/
 329
 330 extern afs_int32 ubik_quorum;   /* min hosts in quorum */
 331 extern struct ubik_dbase *ubik_dbase;   /* the database handled by this server */
 332 extern afs_uint32 ubik_host[UBIK_MAX_INTERFACE_ADDR];   /* this host addr, in net order */
 333 extern int ubik_amSyncSite;     /* sleep on this waiting to be sync site */
 334 extern struct ubik_stats {      /* random stats */
 335     afs_int32 escapes;
 336 } ubik_stats;
 337 extern afs_int32 urecovery_state;       /* sync site recovery process state */
 338 extern struct ubik_trans *ubik_currentTrans;    /* current trans */
 339 extern afs_int32 ubik_debugFlag;        /* ubik debug flag */
 340 extern int ubikPrimaryAddrOnly; /* use only primary address */
 341
 342 /*
 343  * Lock ordering
 344  *
 345  * Any of the locks may be acquired singly; when acquiring multiple locks, they
 346  * should be acquired in the listed order:
 347  *      application cache lock  (dbase->cache_lock)
 348  *      database lock           DBHOLD/DBRELE
 349  *      beacon lock             UBIK_BEACON_LOCK/UNLOCK
 350  *      vote lock               UBIK_VOTE_LOCK/UNLOCK
 351  *      version lock            UBIK_VERSION_LOCK/UNLOCK
 352  *      server address lock     UBIK_ADDR_LOCK/UNLOCK
 353  */
 354
 355 /*!
 356  * \brief Global beacon data.  All values are protected by beacon_lock
 357  * This lock also protects some values in the ubik_server structures:
 358  *      lastVoteTime
 359  *      lastBeaconSent
 360  *      lastVote
 361  *      up
 362  *      beaconSinceDown
 363  */
 364 struct beacon_data {
 365 #ifdef AFS_PTHREAD_ENV
 366     pthread_mutex_t beacon_lock;
 367 #endif
 368     int ubik_amSyncSite;                /*!< flag telling if I'm sync site */
 369     afs_int32 syncSiteUntil;            /*!< valid only if amSyncSite */
 370     int ubik_syncSiteAdvertised;        /*!< flag telling if remotes are aware we have quorum */
 371 };
 372
 373 #define UBIK_BEACON_LOCK opr_mutex_enter(&beacon_globals.beacon_lock)
 374 #define UBIK_BEACON_UNLOCK opr_mutex_exit(&beacon_globals.beacon_lock)
 375
 376 /*!
 377  * \brief Global vote data.  All values are protected by vote_lock
 378  */
 379 struct vote_data {
 380 #ifdef AFS_PTHREAD_ENV
 381     pthread_mutex_t vote_lock;
 382 #endif
 383     struct ubik_version ubik_dbVersion; /* sync site's dbase version */
 384     struct ubik_tid ubik_dbTid;         /* sync site's tid, or 0 if none */
 385     /* Used by all sites in nominating new sync sites */
 386     afs_int32 ubik_lastYesTime;         /* time we sent the last yes vote */
 387     afs_uint32 lastYesHost;             /* host to which we sent yes vote */
 388     /* Next is time sync site began this vote: guarantees sync site until this + SMALLTIME */
 389     afs_int32 lastYesClaim;
 390     int lastYesState;                   /* did last site we voted for claim to be sync site? */
 391     /* Used to guarantee that nomination process doesn't loop */
 392     afs_int32 lowestTime;
 393     afs_uint32 lowestHost;
 394     afs_int32 syncTime;
 395     afs_int32 syncHost;
 396 };
 397
 398 #define UBIK_VOTE_LOCK opr_mutex_enter(&vote_globals.vote_lock)
 399 #define UBIK_VOTE_UNLOCK opr_mutex_exit(&vote_globals.vote_lock)
 400
 401 /*!
 402  * \brief Server address data.  All values are protected by addr_lock
 403  *
 404  * This lock also protects:
 405  *     ubik_server: addr[], vote_rxcid, disk_rxcid
 406  *
 407  */
 408 struct addr_data {
 409 #ifdef AFS_PTHREAD_ENV
 410     pthread_mutex_t addr_lock;
 411 #endif
 412     afs_int32 ubikSecIndex;
 413     struct rx_securityClass *ubikSecClass;
 414 };
 415
 416 #define UBIK_ADDR_LOCK opr_mutex_enter(&addr_globals.addr_lock)
 417 #define UBIK_ADDR_UNLOCK opr_mutex_exit(&addr_globals.addr_lock)
 418
 419 /*!
 420  * \brief The version lock protects the structure member, as well as
 421  * the database version, flags, tidCounter, writeTidCounter
 422  */
 423 struct version_data {
 424 #ifdef AFS_PTHREAD_ENV
 425     pthread_mutex_t version_lock;
 426 #endif
 427     afs_int32 ubik_epochTime;   /* time when this site started */
 428 };
 429
 430 #define UBIK_VERSION_LOCK opr_mutex_enter(&version_globals.version_lock)
 431 #define UBIK_VERSION_UNLOCK opr_mutex_exit(&version_globals.version_lock)
 432
 433 /* phys.c */
 434 extern int uphys_stat(struct ubik_dbase *adbase, afs_int32 afid,
 435                       struct ubik_stat *astat);
 436 extern int uphys_read(struct ubik_dbase *adbase, afs_int32 afile,
 437                       void *abuffer, afs_int32 apos,
 438                       afs_int32 alength);
 439 extern int uphys_write(struct ubik_dbase *adbase, afs_int32 afile,
 440                        void *abuffer, afs_int32 apos,
 441                        afs_int32 alength);
 442 extern int uphys_truncate(struct ubik_dbase *adbase, afs_int32 afile,
 443                           afs_int32 asize);
 444 extern int uphys_getnfiles(struct ubik_dbase *adbase);
 445 extern int uphys_getlabel(struct ubik_dbase *adbase, afs_int32 afile,
 446                           struct ubik_version *aversion);
 447 extern int uphys_setlabel(struct ubik_dbase *adbase, afs_int32 afile,
 448                           struct ubik_version *aversion);
 449 extern int uphys_sync(struct ubik_dbase *adbase, afs_int32 afile);
 450 extern void uphys_invalidate(struct ubik_dbase *adbase,
 451                              afs_int32 afid);
 452 extern int uphys_buf_append(struct ubik_dbase *adbase, afs_int32 afid,
 453                             void *buf, afs_int32 alength);
 454
 455 /*! \name recovery.c */
 456 extern int urecovery_ResetState(void);
 457 extern int urecovery_LostServer(struct ubik_server *server);
 458 extern int urecovery_AllBetter(struct ubik_dbase *adbase,
 459                                int areadAny);
 460 extern int urecovery_AbortAll(struct ubik_dbase *adbase);
 461 extern int urecovery_CheckTid(struct ubik_tid *atid, int abortalways);
 462 extern int urecovery_Initialize(struct ubik_dbase *adbase);
 463 extern void *urecovery_Interact(void *);
 464 extern int DoProbe(struct ubik_server *server);
 465 /*\}*/
 466
 467 /*! \name ubik.c */
 468 extern afs_int32 ContactQuorum_DISK_SetVersion(struct ubik_trans *atrans,
 469                                                int aflags,
 470                                                ubik_version *OldVersion,
 471                                                ubik_version *NewVersion);
 472
 473 extern void panic(char *format, ...)
 474     AFS_ATTRIBUTE_FORMAT(__printf__, 1, 2);
 475
 476 extern afs_uint32 ubikGetPrimaryInterfaceAddr(afs_uint32 addr);
 477
 478 extern int ubik_CheckAuth(struct rx_call *);
 479
 480 /*\}*/
 481
 482 /*! \name beacon.c */
 483 struct afsconf_cell;
 484 extern void ubeacon_InitSecurityClass(void);
 485 extern void ubeacon_ReinitServer(struct ubik_server *ts);
 486 extern void ubeacon_Debug(struct ubik_debug *aparm);
 487 extern int ubeacon_AmSyncSite(void);
 488 extern int ubeacon_SyncSiteAdvertised(void);
 489 extern int ubeacon_InitServerListByInfo(afs_uint32 ame,
 490                                         struct afsconf_cell *info,
 491                                         char clones[]);
 492 extern int ubeacon_InitServerList(afs_uint32 ame, afs_uint32 aservers[]);
 493 extern void *ubeacon_Interact(void *);
 494 extern int ubeacon_updateUbikNetworkAddress(afs_uint32 ubik_host[]);
 495 extern struct beacon_data beacon_globals;
 496 extern struct addr_data addr_globals;
 497
 498 /*\}*/
 499
 500 /*! \name disk.c */
 501 extern int udisk_Init(int nBUffers);
 502 extern void udisk_Debug(struct ubik_debug *aparm);
 503 extern int udisk_Invalidate(struct ubik_dbase *adbase, afs_int32 afid);
 504 extern int udisk_read(struct ubik_trans *atrans, afs_int32 afile,
 505                       void *abuffer, afs_int32 apos, afs_int32 alen);
 506 extern int udisk_truncate(struct ubik_trans *atrans, afs_int32 afile,
 507                           afs_int32 alength);
 508 extern int udisk_write(struct ubik_trans *atrans, afs_int32 afile,
 509                        void *abuffer, afs_int32 apos, afs_int32 alen);
 510 extern int udisk_begin(struct ubik_dbase *adbase, int atype,
 511                        struct ubik_trans **atrans);
 512 extern int udisk_commit(struct ubik_trans *atrans);
 513 extern int udisk_abort(struct ubik_trans *atrans);
 514 extern int udisk_end(struct ubik_trans *atrans);
 515 /*\}*/
 516
 517 /*! \name lock.c */
 518 extern void ulock_Init(void);
 519 extern int  ulock_getLock(struct ubik_trans *atrans, int atype, int await);
 520 extern void ulock_relLock(struct ubik_trans *atrans);
 521 extern void ulock_Debug(struct ubik_debug *aparm);
 522 /*\}*/
 523
 524 /*! \name vote.c */
 525 extern int uvote_ShouldIRun(void);
 526 extern afs_int32 uvote_GetSyncSite(void);
 527 extern int uvote_Init(void);
 528 extern struct vote_data vote_globals;
 529 extern void uvote_set_dbVersion(struct ubik_version);
 530 extern int uvote_eq_dbVersion(struct ubik_version);
 531 extern int uvote_HaveSyncAndVersion(struct ubik_version);
 532 /*\}*/
 533
 534 #endif /* UBIK_INTERNALS */
 535
 536 extern afs_int32 ubik_nBuffers;
 537
 538 /*!
 539  * \name Public function prototypes
 540  */
 541
 542 /*! \name ubik.c */
 543 struct afsconf_cell;
 544 extern int ubik_ServerInitByInfo(afs_uint32 myHost, short myPort,
 545                                  struct afsconf_cell *info, char clones[],
 546                                  const char *pathName,
 547                                  struct ubik_dbase **dbase);
 548 extern int ubik_ServerInit(afs_uint32 myHost, short myPort,
 549                            afs_uint32 serverList[],
 550                            const char *pathName, struct ubik_dbase **dbase);
 551 extern int ubik_BeginTrans(struct ubik_dbase *dbase,
 552                            afs_int32 transMode, struct ubik_trans **transPtr);
 553 extern int ubik_BeginTransReadAny(struct ubik_dbase *dbase,
 554                                   afs_int32 transMode,
 555                                   struct ubik_trans **transPtr);
 556 extern int ubik_BeginTransReadAnyWrite(struct ubik_dbase *dbase,
 557                                        afs_int32 transMode,
 558                                        struct ubik_trans **transPtr);
 559 extern int ubik_AbortTrans(struct ubik_trans *transPtr);
 560
 561 extern int ubik_EndTrans(struct ubik_trans *transPtr);
 562 extern int ubik_Read(struct ubik_trans *transPtr, void *buffer,
 563                      afs_int32 length);
 564 extern int ubik_Flush(struct ubik_trans *transPtr);
 565 extern int ubik_Write(struct ubik_trans *transPtr, void *buffer,
 566                       afs_int32 length);
 567 extern int ubik_Seek(struct ubik_trans *transPtr, afs_int32 fileid,
 568                      afs_int32 position);
 569 extern int ubik_Tell(struct ubik_trans *transPtr, afs_int32 * fileid,
 570                      afs_int32 * position);
 571 extern int ubik_Truncate(struct ubik_trans *transPtr,
 572                          afs_int32 length);
 573 extern int ubik_SetLock(struct ubik_trans *atrans, afs_int32 apos,
 574                         afs_int32 alen, int atype);
 575 extern int ubik_WaitVersion(struct ubik_dbase *adatabase,
 576                             struct ubik_version *aversion);
 577 extern int ubik_GetVersion(struct ubik_trans *atrans,
 578                            struct ubik_version *avers);
 579 extern int ubik_CheckCache(struct ubik_trans *atrans,
 580                            ubik_updatecache_func check,
 581                            void *rock);
 582 extern struct version_data version_globals;
 583 /*\}*/
 584
 585 /*! \name ubikclient.c */
 586
 587 extern int ubik_ParseClientList(int argc, char **argv, afs_uint32 * aothers);
 588 extern unsigned int afs_random(void);
 589 extern int ubik_ClientInit(struct rx_connection **serverconns,
 590                            struct ubik_client **aclient);
 591 extern afs_int32 ubik_ClientDestroy(struct ubik_client *aclient);
 592 extern struct rx_connection *ubik_RefreshConn(struct rx_connection *tc);
 593 #ifdef UBIK_LEGACY_CALLITER
 594 extern afs_int32 ubik_CallIter(int (*aproc) (), struct ubik_client *aclient,
 595                                afs_int32 aflags, int *apos, long p1, long p2,
 596                                long p3, long p4, long p5, long p6, long p7,
 597                                long p8, long p9, long p10, long p11, long p12,
 598                                long p13, long p14, long p15, long p16);
 599 extern afs_int32 ubik_Call_New(int (*aproc) (), struct ubik_client
 600                                *aclient, afs_int32 aflags, long p1, long p2,
 601                                long p3, long p4, long p5, long p6, long p7,
 602                                long p8, long p9, long p10, long p11, long p12,
 603                                long p13, long p14, long p15, long p16);
 604 #endif
 605 /*\}*/
 606
 607 /* \name ubikcmd.c */
 608 extern int ubik_ParseServerList(int argc, char **argv, afs_uint32 *ahost,
 609                                 afs_uint32 *aothers);
 610 /*\}*/
 611
 612 /* \name uinit.c */
 613
 614 struct rx_securityClass;
 615 struct afsconf_dir;
 616 extern int ugen_ClientInitCell(struct afsconf_dir *dir,
 617                                struct afsconf_cell *info,
 618                                int secFlags,
 619                                struct ubik_client **uclientp,
 620                                int maxservers, const char *serviceid,
 621                                int deadtime);
 622 extern int ugen_ClientInitServer(const char *confDir, char *cellName,
 623                                  int secFlags, struct ubik_client **uclientp,
 624                                  int maxservers, char *serviceid,
 625                                  int deadtime, afs_uint32 server,
 626                                  afs_uint32 port);
 627 extern int ugen_ClientInitFlags(const char *confDir, char *cellName,
 628                                 int secFlags, struct ubik_client **uclientp,
 629                                 int (*secproc) (struct rx_securityClass *,
 630                                                 afs_int32),
 631                                 int maxservers, char *serviceid,
 632                                 int deadtime);
 633 extern afs_int32 ugen_ClientInit(int noAuthFlag, const char *confDir,
 634                                  char *cellName, afs_int32 sauth,
 635                                  struct ubik_client **uclientp,
 636                                  int (*secproc) (struct rx_securityClass *sc,
 637                                                  afs_int32 scIndex),
 638                                  char *funcName,
 639                                  afs_int32 gen_rxkad_level,
 640                                  afs_int32 maxservers, char *serviceid,
 641                                  afs_int32 deadtime, afs_uint32 server,
 642                                  afs_uint32 port, afs_int32 usrvid);
 643
 644 #endif /* UBIK_H */