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8322 nl: misleading-indentation
[unleashed/tickless.git] / usr / src / cmd / sendmail / db / db.h
blob64684b9d1246dbd498d28776285a73c020228ee1
1 /*-
2 * See the file LICENSE for redistribution information.
3 *
4 * Copyright (c) 1996, 1997, 1998
5 * Sleepycat Software. All rights reserved.
6 *
7 * @(#)db.h 10.174 (Sleepycat) 1/3/99
8 */
9
10 #ifndef _DB_H_
11 #define _DB_H_
12
13 #ifndef __NO_SYSTEM_INCLUDES
14 #include <sys/types.h>
15
16 #include <stdio.h>
17 #endif
18
19 /*
20 * XXX
21 * MacOS: ensure that Metrowerks C makes enumeration types int sized.
22 */
23 #ifdef __MWERKS__
24 #pragma enumsalwaysint on
25 #endif
26
27 /*
28 * XXX
29 * Handle function prototypes and the keyword "const". This steps on name
30 * space that DB doesn't control, but all of the other solutions are worse.
31 *
32 * XXX
33 * While Microsoft's compiler is ANSI C compliant, it doesn't have _STDC_
34 * defined by default, you specify a command line flag or #pragma to turn
35 * it on. Don't do that, however, because some of Microsoft's own header
36 * files won't compile.
37 */
38 #undef __P
39 #if defined(__STDC__) || defined(__cplusplus) || defined(_MSC_VER)
40 #define __P(protos) protos /* ANSI C prototypes */
41 #else
42 #define const
43 #define __P(protos) () /* K&R C preprocessor */
44 #endif
45
46 /*
47 * !!!
48 * DB needs basic information about specifically sized types. If they're
49 * not provided by the system, typedef them here.
50 *
51 * We protect them against multiple inclusion using __BIT_TYPES_DEFINED__,
52 * as does BIND and Kerberos, since we don't know for sure what #include
53 * files the user is using.
54 *
55 * !!!
56 * We also provide the standard u_int, u_long etc., if they're not provided
57 * by the system.
58 */
59 #ifndef __BIT_TYPES_DEFINED__
60 #define __BIT_TYPES_DEFINED__
61 typedef unsigned char u_int8_t;
62
63 typedef unsigned short u_int16_t;
64
65 typedef unsigned int u_int32_t;
66 #endif
67
68
69
70
71
72
73 #define DB_VERSION_MAJOR 2
74 #define DB_VERSION_MINOR 7
75 #define DB_VERSION_PATCH 7
76 #define DB_VERSION_STRING "Sleepycat Software: Berkeley DB 2.7.7: (08/20/99)"
77
78 typedef u_int32_t db_pgno_t; /* Page number type. */
79 typedef u_int16_t db_indx_t; /* Page offset type. */
80 #define DB_MAX_PAGES 0xffffffff /* >= # of pages in a file */
81
82 typedef u_int32_t db_recno_t; /* Record number type. */
83 #define DB_MAX_RECORDS 0xffffffff /* >= # of records in a tree */
84
85 typedef size_t DB_LOCK; /* Object returned by lock manager. */
86
87 /* Forward structure declarations, so applications get type checking. */
88 struct __db; typedef struct __db DB;
89 #ifdef DB_DBM_HSEARCH
90 typedef struct __db DBM;
91 #endif
92 struct __db_bt_stat; typedef struct __db_bt_stat DB_BTREE_STAT;
93 struct __db_dbt; typedef struct __db_dbt DBT;
94 struct __db_env; typedef struct __db_env DB_ENV;
95 struct __db_ilock; typedef struct __db_ilock DB_LOCK_ILOCK;
96 struct __db_info; typedef struct __db_info DB_INFO;
97 struct __db_lock_stat; typedef struct __db_lock_stat DB_LOCK_STAT;
98 struct __db_lockregion; typedef struct __db_lockregion DB_LOCKREGION;
99 struct __db_lockreq; typedef struct __db_lockreq DB_LOCKREQ;
100 struct __db_locktab; typedef struct __db_locktab DB_LOCKTAB;
101 struct __db_log; typedef struct __db_log DB_LOG;
102 struct __db_log_stat; typedef struct __db_log_stat DB_LOG_STAT;
103 struct __db_lsn; typedef struct __db_lsn DB_LSN;
104 struct __db_mpool; typedef struct __db_mpool DB_MPOOL;
105 struct __db_mpool_finfo;typedef struct __db_mpool_finfo DB_MPOOL_FINFO;
106 struct __db_mpool_fstat;typedef struct __db_mpool_fstat DB_MPOOL_FSTAT;
107 struct __db_mpool_stat; typedef struct __db_mpool_stat DB_MPOOL_STAT;
108 struct __db_mpoolfile; typedef struct __db_mpoolfile DB_MPOOLFILE;
109 struct __db_txn; typedef struct __db_txn DB_TXN;
110 struct __db_txn_active; typedef struct __db_txn_active DB_TXN_ACTIVE;
111 struct __db_txn_stat; typedef struct __db_txn_stat DB_TXN_STAT;
112 struct __db_txnmgr; typedef struct __db_txnmgr DB_TXNMGR;
113 struct __db_txnregion; typedef struct __db_txnregion DB_TXNREGION;
114 struct __dbc; typedef struct __dbc DBC;
115
116 /* Key/data structure -- a Data-Base Thang. */
117 struct __db_dbt {
118 void *data; /* key/data */
119 u_int32_t size; /* key/data length */
120 u_int32_t ulen; /* RO: length of user buffer. */
121 u_int32_t dlen; /* RO: get/put record length. */
122 u_int32_t doff; /* RO: get/put record offset. */
123
124 #define DB_DBT_INTERNAL 0x01 /* Ignore user's malloc (internal). */
125 #define DB_DBT_MALLOC 0x02 /* Return in allocated memory. */
126 #define DB_DBT_PARTIAL 0x04 /* Partial put/get. */
127 #define DB_DBT_USERMEM 0x08 /* Return in user's memory. */
128 u_int32_t flags;
129 };
130
131 /*
132 * DB run-time interface configuration.
133 *
134 * There are a set of functions that the application can replace with its
135 * own versions, and some other knobs which can be turned at run-time.
136 */
137 #define DB_FUNC_CLOSE 1 /* POSIX 1003.1 close. */
138 #define DB_FUNC_DIRFREE 2 /* DB: free directory list. */
139 #define DB_FUNC_DIRLIST 3 /* DB: create directory list. */
140 #define DB_FUNC_EXISTS 4 /* DB: return if file exists. */
141 #define DB_FUNC_FREE 5 /* ANSI C free. */
142 #define DB_FUNC_FSYNC 6 /* POSIX 1003.1 fsync. */
143 #define DB_FUNC_IOINFO 7 /* DB: return file I/O information. */
144 #define DB_FUNC_MALLOC 8 /* ANSI C malloc. */
145 #define DB_FUNC_MAP 9 /* DB: map file into shared memory. */
146 #define DB_FUNC_OPEN 10 /* POSIX 1003.1 open. */
147 #define DB_FUNC_READ 11 /* POSIX 1003.1 read. */
148 #define DB_FUNC_REALLOC 12 /* ANSI C realloc. */
149 #define DB_FUNC_RUNLINK 13 /* DB: remove a shared region. */
150 #define DB_FUNC_SEEK 14 /* POSIX 1003.1 lseek. */
151 #define DB_FUNC_SLEEP 15 /* DB: sleep secs/usecs. */
152 #define DB_FUNC_UNLINK 16 /* POSIX 1003.1 unlink. */
153 #define DB_FUNC_UNMAP 17 /* DB: unmap shared memory file. */
154 #define DB_FUNC_WRITE 18 /* POSIX 1003.1 write. */
155 #define DB_FUNC_YIELD 19 /* DB: yield thread to scheduler. */
156 #define DB_MUTEXLOCKS 20 /* DB: turn off all mutex locks. */
157 #define DB_PAGEYIELD 21 /* DB: yield the CPU on pool get. */
158 #define DB_REGION_ANON 22 /* DB: anonymous, unnamed regions. */
159 #define DB_REGION_INIT 23 /* DB: page-fault regions in create. */
160 #define DB_REGION_NAME 24 /* DB: anonymous, named regions. */
161 #define DB_TSL_SPINS 25 /* DB: initialize spin count. */
162
163 /*
164 * Database configuration and initialization.
165 */
166 /*
167 * Flags understood by both db_open(3) and db_appinit(3).
168 */
169 #define DB_CREATE 0x000001 /* O_CREAT: create file as necessary. */
170 #define DB_NOMMAP 0x000002 /* Don't mmap underlying file. */
171 #define DB_THREAD 0x000004 /* Free-thread DB package handles. */
172
173 /*
174 * Flags understood by db_appinit(3).
175 */
176 /* 0x000007 COMMON MASK. */
177 #define DB_INIT_CDB 0x000008 /* Concurrent Access Methods. */
178 #define DB_INIT_LOCK 0x000010 /* Initialize locking. */
179 #define DB_INIT_LOG 0x000020 /* Initialize logging. */
180 #define DB_INIT_MPOOL 0x000040 /* Initialize mpool. */
181 #define DB_INIT_TXN 0x000080 /* Initialize transactions. */
182 #define DB_MPOOL_PRIVATE 0x000100 /* Mpool: private memory pool. */
183 #define DB_RECOVER 0x000200 /* Run normal recovery. */
184 #define DB_RECOVER_FATAL 0x000400 /* Run catastrophic recovery. */
185 #define DB_TXN_NOSYNC 0x000800 /* Do not sync log on commit. */
186 #define DB_USE_ENVIRON 0x001000 /* Use the environment. */
187 #define DB_USE_ENVIRON_ROOT 0x002000 /* Use the environment if root. */
188
189 /*
190 * Flags understood by db_open(3).
191 *
192 * DB_EXCL and DB_TEMPORARY are internal only, and are not documented.
193 * DB_SEQUENTIAL is currently internal, but may be exported some day.
194 */
195 /* 0x000007 COMMON MASK. */
196 /* 0x001fff ALREADY USED. */
197 #define DB_EXCL 0x002000 /* O_EXCL: exclusive open (internal). */
198 #define DB_RDONLY 0x004000 /* O_RDONLY: read-only. */
199 #define DB_SEQUENTIAL 0x008000 /* Sequential access (internal). */
200 #define DB_TEMPORARY 0x010000 /* Remove on last close (internal). */
201 #define DB_TRUNCATE 0x020000 /* O_TRUNCATE: replace existing DB. */
202 #define DB_FCNTL_LOCKING 0x040000 /* Undocumented: fcntl(2) locking. */
203
204 /*
205 * Deadlock detector modes; used in the DBENV structure to configure the
206 * locking subsystem.
207 */
208 #define DB_LOCK_NORUN 0
209 #define DB_LOCK_DEFAULT 1 /* Default policy. */
210 #define DB_LOCK_OLDEST 2 /* Abort oldest transaction. */
211 #define DB_LOCK_RANDOM 3 /* Abort random transaction. */
212 #define DB_LOCK_YOUNGEST 4 /* Abort youngest transaction. */
213
214 struct __db_env {
215 int db_lorder; /* Byte order. */
216
217 /* Error message callback. */
218 void (*db_errcall) __P((const char *, char *));
219 FILE *db_errfile; /* Error message file stream. */
220 const char *db_errpfx; /* Error message prefix. */
221 int db_verbose; /* Generate debugging messages. */
222 int db_panic; /* Panic flag, callback function. */
223 void (*db_paniccall) __P((DB_ENV *, int));
224
225 /* User paths. */
226 char *db_home; /* Database home. */
227 char *db_log_dir; /* Database log file directory. */
228 char *db_tmp_dir; /* Database tmp file directory. */
229
230 char **db_data_dir; /* Database data file directories. */
231 int data_cnt; /* Database data file slots. */
232 int data_next; /* Next Database data file slot. */
233
234 /* Locking. */
235 DB_LOCKTAB *lk_info; /* Return from lock_open(). */
236 const u_int8_t *lk_conflicts; /* Two dimensional conflict matrix. */
237 u_int32_t lk_modes; /* Number of lock modes in table. */
238 u_int32_t lk_max; /* Maximum number of locks. */
239 u_int32_t lk_detect; /* Deadlock detect on all conflicts. */
240
241 /* Logging. */
242 DB_LOG *lg_info; /* Return from log_open(). */
243 u_int32_t lg_max; /* Maximum file size. */
244
245 /* Memory pool. */
246 DB_MPOOL *mp_info; /* Return from memp_open(). */
247 size_t mp_mmapsize; /* Maximum file size for mmap. */
248 size_t mp_size; /* Bytes in the mpool cache. */
249
250 /* Transactions. */
251 DB_TXNMGR *tx_info; /* Return from txn_open(). */
252 u_int32_t tx_max; /* Maximum number of transactions. */
253 int (*tx_recover) /* Dispatch function for recovery. */
254 __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
255
256 /*
257 * XA support.
258 *
259 * !!!
260 * Explicit representations of structures in queue.h.
261 *
262 * TAILQ_ENTRY(__db_env);
263 */
264 struct {
265 struct __db_env *tqe_next;
266 struct __db_env **tqe_prev;
267 } links;
268 int xa_rmid; /* XA Resource Manager ID. */
269 DB_TXN *xa_txn; /* XA Current transaction. */
270
271 #define DB_ENV_APPINIT 0x01 /* Paths initialized by db_appinit(). */
272 #define DB_ENV_CDB 0x02 /* Concurrent DB product. */
273 #define DB_ENV_STANDALONE 0x04 /* Test: freestanding environment. */
274 #define DB_ENV_THREAD 0x08 /* DB_ENV is multi-threaded. */
275 u_int32_t flags; /* Flags. */
276 };
277
278 /*******************************************************
279 * Access methods.
280 *******************************************************/
281 /*
282 * !!!
283 * Changes here must be reflected in java/src/com/sleepycat/db/Db.java.
284 */
285 typedef enum {
286 DB_BTREE=1, /* B+tree. */
287 DB_HASH, /* Extended Linear Hashing. */
288 DB_RECNO, /* Fixed and variable-length records. */
289 DB_UNKNOWN /* Figure it out on open. */
290 } DBTYPE;
291
292 #define DB_BTREEVERSION 6 /* Current btree version. */
293 #define DB_BTREEOLDVER 6 /* Oldest btree version supported. */
294 #define DB_BTREEMAGIC 0x053162
295
296 #define DB_HASHVERSION 5 /* Current hash version. */
297 #define DB_HASHOLDVER 4 /* Oldest hash version supported. */
298 #define DB_HASHMAGIC 0x061561
299
300 #define DB_LOGVERSION 2 /* Current log version. */
301 #define DB_LOGOLDVER 2 /* Oldest log version supported. */
302 #define DB_LOGMAGIC 0x040988
303
304 struct __db_info {
305 int db_lorder; /* Byte order. */
306 size_t db_cachesize; /* Underlying cache size. */
307 size_t db_pagesize; /* Underlying page size. */
308
309 /* Local heap allocation. */
310 void *(*db_malloc) __P((size_t));
311 int (*dup_compare) /* Duplicate compare function. */
312 __P((const DBT *, const DBT *));
313
314 /* Btree access method. */
315 u_int32_t bt_maxkey; /* Maximum keys per page. */
316 u_int32_t bt_minkey; /* Minimum keys per page. */
317 int (*bt_compare) /* Comparison function. */
318 __P((const DBT *, const DBT *));
319 size_t (*bt_prefix) /* Prefix function. */
320 __P((const DBT *, const DBT *));
321
322 /* Hash access method. */
323 u_int32_t h_ffactor; /* Fill factor. */
324 u_int32_t h_nelem; /* Number of elements. */
325 u_int32_t (*h_hash) /* Hash function. */
326 __P((const void *, u_int32_t));
327
328 /* Recno access method. */
329 int re_pad; /* Fixed-length padding byte. */
330 int re_delim; /* Variable-length delimiting byte. */
331 u_int32_t re_len; /* Length for fixed-length records. */
332 char *re_source; /* Source file name. */
333
334 #define DB_DELIMITER 0x0001 /* Recno: re_delim set. */
335 #define DB_DUP 0x0002 /* Btree, Hash: duplicate keys. */
336 #define DB_DUPSORT 0x0004 /* Btree, Hash: duplicate keys. */
337 #define DB_FIXEDLEN 0x0008 /* Recno: fixed-length records. */
338 #define DB_PAD 0x0010 /* Recno: re_pad set. */
339 #define DB_RECNUM 0x0020 /* Btree: record numbers. */
340 #define DB_RENUMBER 0x0040 /* Recno: renumber on insert/delete. */
341 #define DB_SNAPSHOT 0x0080 /* Recno: snapshot the input. */
342 u_int32_t flags;
343 };
344
345 /*
346 * DB access method and cursor operation values. Each value is an operation
347 * code to which additional bit flags are added.
348 */
349 #define DB_AFTER 1 /* c_put() */
350 #define DB_APPEND 2 /* put() */
351 #define DB_BEFORE 3 /* c_put() */
352 #define DB_CHECKPOINT 4 /* log_put(), log_get() */
353 #define DB_CURLSN 5 /* log_put() */
354 #define DB_CURRENT 6 /* c_get(), c_put(), log_get() */
355 #define DB_FIRST 7 /* c_get(), log_get() */
356 #define DB_FLUSH 8 /* log_put() */
357 #define DB_GET_BOTH 9 /* get(), c_get() */
358 #define DB_GET_RECNO 10 /* c_get() */
359 #define DB_JOIN_ITEM 11 /* c_get(); do not do primary lookup */
360 #define DB_KEYFIRST 12 /* c_put() */
361 #define DB_KEYLAST 13 /* c_put() */
362 #define DB_LAST 14 /* c_get(), log_get() */
363 #define DB_NEXT 15 /* c_get(), log_get() */
364 #define DB_NEXT_DUP 16 /* c_get() */
365 #define DB_NOOVERWRITE 17 /* put() */
366 #define DB_NOSYNC 18 /* close() */
367 #define DB_PREV 19 /* c_get(), log_get() */
368 #define DB_RECORDCOUNT 20 /* stat() */
369 #define DB_SET 21 /* c_get(), log_get() */
370 #define DB_SET_RANGE 22 /* c_get() */
371 #define DB_SET_RECNO 23 /* get(), c_get() */
372 #define DB_WRITELOCK 24 /* cursor() (internal) */
373
374 #define DB_OPFLAGS_MASK 0x1f /* Mask for operations flags. */
375 #define DB_RMW 0x80000000 /* Acquire write flag immediately. */
376
377 /*
378 * DB (user visible) error return codes.
379 *
380 * !!!
381 * Changes to any of the user visible error return codes must be reflected
382 * in java/src/com/sleepycat/db/Db.java.
383 */
384 #define DB_INCOMPLETE ( -1) /* Sync didn't finish. */
385 #define DB_KEYEMPTY ( -2) /* The key/data pair was deleted or
386 was never created by the user. */
387 #define DB_KEYEXIST ( -3) /* The key/data pair already exists. */
388 #define DB_LOCK_DEADLOCK ( -4) /* Locker killed to resolve deadlock. */
389 #define DB_LOCK_NOTGRANTED ( -5) /* Lock unavailable, no-wait set. */
390 #define DB_LOCK_NOTHELD ( -6) /* Lock not held by locker. */
391 #define DB_NOTFOUND ( -7) /* Key/data pair not found (EOF). */
392 #define DB_RUNRECOVERY ( -8) /* Panic return. */
393
394 /* DB (private) error return codes. */
395 #define DB_DELETED ( -9) /* Recovery file marked deleted. */
396 #define DB_NEEDSPLIT (-10) /* Page needs to be split. */
397 #define DB_SWAPBYTES (-11) /* Database needs byte swapping. */
398 #define DB_TXN_CKP (-12) /* Encountered ckp record in log. */
399
400 #define DB_FILE_ID_LEN 20 /* DB file ID length. */
401
402 /* DB access method description structure. */
403 struct __db {
404 void *mutexp; /* Synchronization for free threading */
405
406 /* Documented, returned information. */
407 DBTYPE type; /* DB access method. */
408 int byteswapped; /* Database byte order is swapped. */
409 int saved_open_fd; /* For fcntl lock preservation. */
410
411 DB_ENV *dbenv; /* DB_ENV structure. */
412 DB_ENV *mp_dbenv; /* DB_ENV for local mpool creation. */
413
414 void *internal; /* Access method private. */
415
416 DB_MPOOL *mp; /* The access method's mpool. */
417 DB_MPOOLFILE *mpf; /* The access method's mpool file. */
418
419 /*
420 * !!!
421 * Explicit representations of structures in queue.h.
422 *
423 * TAILQ_HEAD(free_queue, __dbc);
424 * TAILQ_HEAD(active_queue, __dbc);
425 */
426 struct {
427 struct __dbc *tqh_first;
428 struct __dbc **tqh_last;
429 } free_queue;
430 struct {
431 struct __dbc *tqh_first;
432 struct __dbc **tqh_last;
433 } active_queue;
434
435 u_int8_t fileid[DB_FILE_ID_LEN]; /* Uniquely identify this file for
436 locking. */
437 u_int32_t log_fileid; /* Logging file id. */
438 size_t pgsize; /* Logical page size of file. */
439
440 /* Local heap allocation. */
441 void *(*db_malloc) __P((size_t));
442 int (*dup_compare) /* Duplicate compare function. */
443 __P((const DBT *, const DBT *));
444 u_int32_t (*h_hash) /* Hash function. */
445 __P((const void *, u_int32_t));
446
447 /* Functions. */
448 int (*am_close) __P((DB *));
449 int (*close) __P((DB *, u_int32_t));
450 int (*cursor) __P((DB *, DB_TXN *, DBC **, u_int32_t));
451 int (*del) __P((DB *, DB_TXN *, DBT *, u_int32_t));
452 int (*fd) __P((DB *, int *));
453 int (*get) __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
454 int (*join) __P((DB *, DBC **, u_int32_t, DBC **));
455 int (*put) __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
456 int (*stat) __P((DB *, void *, void *(*)(size_t), u_int32_t));
457 int (*sync) __P((DB *, u_int32_t));
458
459 #define DB_AM_CDB 0x000001 /* Concurrent Access Methods. */
460 #define DB_AM_DUP 0x000002 /* DB_DUP (internal). */
461 #define DB_AM_INMEM 0x000004 /* In-memory; no sync on close. */
462 #define DB_AM_LOCKING 0x000008 /* Perform locking. */
463 #define DB_AM_LOGGING 0x000010 /* Perform logging. */
464 #define DB_AM_MLOCAL 0x000020 /* Database memory pool is local. */
465 #define DB_AM_PGDEF 0x000040 /* Page size was defaulted. */
466 #define DB_AM_RDONLY 0x000080 /* Database is readonly. */
467 #define DB_AM_SWAP 0x000100 /* Pages need to be byte-swapped. */
468 #define DB_AM_THREAD 0x000200 /* DB is multi-threaded. */
469 #define DB_BT_RECNUM 0x000400 /* DB_RECNUM (internal). */
470 #define DB_DBM_ERROR 0x000800 /* Error in DBM/NDBM database. */
471 #define DB_RE_DELIMITER 0x001000 /* DB_DELIMITER (internal). */
472 #define DB_RE_FIXEDLEN 0x002000 /* DB_FIXEDLEN (internal). */
473 #define DB_RE_PAD 0x004000 /* DB_PAD (internal). */
474 #define DB_RE_RENUMBER 0x008000 /* DB_RENUMBER (internal). */
475 #define DB_RE_SNAPSHOT 0x010000 /* DB_SNAPSHOT (internal). */
476 u_int32_t flags;
477 };
478
479 struct __db_ilock { /* Internal DB access method lock. */
480 db_pgno_t pgno; /* Page being locked. */
481 u_int8_t fileid[DB_FILE_ID_LEN];/* File id. */
482 };
483
484 /* Cursor description structure. */
485 struct __dbc {
486 DB *dbp; /* Related DB access method. */
487 DB_TXN *txn; /* Associated transaction. */
488
489 /*
490 * !!!
491 * Explicit representations of structures in queue.h.
492 *
493 * TAILQ_ENTRY(__dbc);
494 */
495 struct {
496 struct __dbc *tqe_next;
497 struct __dbc **tqe_prev;
498 } links;
499
500 u_int32_t lid; /* Default process' locker id. */
501 u_int32_t locker; /* Locker for this operation. */
502 DBT lock_dbt; /* DBT referencing lock. */
503 DB_LOCK_ILOCK lock; /* Object to be locked. */
504 DB_LOCK mylock; /* Lock held on this cursor. */
505
506 DBT rkey; /* Returned key. */
507 DBT rdata; /* Returned data. */
508
509 int (*c_am_close) __P((DBC *));
510 int (*c_am_destroy) __P((DBC *));
511 int (*c_close) __P((DBC *));
512 int (*c_del) __P((DBC *, u_int32_t));
513 int (*c_get) __P((DBC *, DBT *, DBT *, u_int32_t));
514 int (*c_put) __P((DBC *, DBT *, DBT *, u_int32_t));
515
516 void *internal; /* Access method private. */
517
518 #define DBC_CONTINUE 0x001 /* Continue dup search: next item. */
519 #define DBC_KEYSET 0x002 /* Continue dup search: current item. */
520 #define DBC_RECOVER 0x004 /* In recovery (do not log or lock). */
521 #define DBC_RMW 0x008 /* Acquire write flag in read op. */
522 #define DBC_WRITER 0x010 /* Cursor immediately writing (CDB). */
523 u_int32_t flags;
524 };
525
526 /* Btree/recno statistics structure. */
527 struct __db_bt_stat {
528 u_int32_t bt_flags; /* Open flags. */
529 u_int32_t bt_maxkey; /* Maxkey value. */
530 u_int32_t bt_minkey; /* Minkey value. */
531 u_int32_t bt_re_len; /* Fixed-length record length. */
532 u_int32_t bt_re_pad; /* Fixed-length record pad. */
533 u_int32_t bt_pagesize; /* Page size. */
534 u_int32_t bt_levels; /* Tree levels. */
535 u_int32_t bt_nrecs; /* Number of records. */
536 u_int32_t bt_int_pg; /* Internal pages. */
537 u_int32_t bt_leaf_pg; /* Leaf pages. */
538 u_int32_t bt_dup_pg; /* Duplicate pages. */
539 u_int32_t bt_over_pg; /* Overflow pages. */
540 u_int32_t bt_free; /* Pages on the free list. */
541 u_int32_t bt_int_pgfree; /* Bytes free in internal pages. */
542 u_int32_t bt_leaf_pgfree; /* Bytes free in leaf pages. */
543 u_int32_t bt_dup_pgfree; /* Bytes free in duplicate pages. */
544 u_int32_t bt_over_pgfree; /* Bytes free in overflow pages. */
545 u_int32_t bt_magic; /* Magic number. */
546 u_int32_t bt_version; /* Version number. */
547 };
548
549 /* Hash statistics structure. */
550 struct __db_h_stat {
551 u_int32_t hash_accesses; /* Number of accesses to this table. */
552 u_int32_t hash_collisions; /* Number of collisions on search. */
553 u_int32_t hash_expansions; /* Number of times we added a bucket. */
554 u_int32_t hash_overflows; /* Number of overflow pages. */
555 u_int32_t hash_bigpages; /* Number of big key/data pages. */
556 u_int32_t hash_dup; /* Number of dup pages. */
557 u_int32_t hash_free; /* Pages on the free list. */
558 u_int32_t hash_bfree; /* Bytes free on bucket pages. */
559 u_int32_t hash_dup_free; /* Bytes free on duplicate pages. */
560 u_int32_t hash_big_bfree; /* Bytes free on big item pages. */
561 u_int32_t hash_buckets; /* Number of hash buckets. */
562 u_int32_t hash_put; /* Number of puts. */
563 u_int32_t hash_deleted; /* Number of deletes. */
564 u_int32_t hash_get; /* Number of gets. */
565 u_int32_t hash_magic; /* Magic number. */
566 u_int32_t hash_version; /* Version number. */
567 u_int32_t hash_pagesize; /* Page size. */
568 u_int32_t hash_nrecs; /* Number of records. */
569 };
570
571 #if defined(__cplusplus)
572 extern "C" {
573 #endif
574 int db_appinit __P((const char *, char * const *, DB_ENV *, u_int32_t));
575 int db_appexit __P((DB_ENV *));
576 int db_jump_set __P((void *, int));
577 int db_open __P((const char *,
578 DBTYPE, u_int32_t, int, DB_ENV *, DB_INFO *, DB **));
579 int db_value_set __P((int, int));
580 char *db_version __P((int *, int *, int *));
581 int db_xa_open __P((const char *,
582 DBTYPE, u_int32_t, int, DB_INFO *, DB **));
583 #if defined(__cplusplus)
584 }
585 #endif
586
587 /*******************************************************
588 * Locking
589 *******************************************************/
590 #define DB_LOCKVERSION 1
591 #define DB_LOCKMAGIC 0x090193
592
593 /* Flag values for lock_vec(), lock_get(). */
594 #define DB_LOCK_NOWAIT 0x01 /* Don't wait on unavailable lock. */
595 #define DB_LOCK_UPGRADE 0x02 /* Upgrade an existing lock instead
596 of granting a new one (internal). */
597
598 /* Flag values for lock_detect(). */
599 #define DB_LOCK_CONFLICT 0x01 /* Run on any conflict. */
600
601 /*
602 * Request types.
603 *
604 * !!!
605 * Changes here must be reflected in java/src/com/sleepycat/db/Db.java.
606 */
607 typedef enum {
608 DB_LOCK_DUMP=0, /* Display held locks. */
609 DB_LOCK_GET, /* Get the lock. */
610 DB_LOCK_INHERIT, /* Pass locks to parent. */
611 DB_LOCK_PUT, /* Release the lock. */
612 DB_LOCK_PUT_ALL, /* Release locker's locks. */
613 DB_LOCK_PUT_OBJ /* Release locker's locks on obj. */
614 } db_lockop_t;
615
616 /*
617 * Simple R/W lock modes and for multi-granularity intention locking.
618 *
619 * !!!
620 * These values are NOT random, as they are used as an index into the lock
621 * conflicts arrays, i.e., DB_LOCK_IWRITE must be == 3, and DB_LOCK_IREAD
622 * must be == 4.
623 *
624 * !!!
625 * Changes here must be reflected in java/src/com/sleepycat/db/Db.java.
626 */
627 typedef enum {
628 DB_LOCK_NG=0, /* Not granted. */
629 DB_LOCK_READ, /* Shared/read. */
630 DB_LOCK_WRITE, /* Exclusive/write. */
631 DB_LOCK_IWRITE, /* Intent exclusive/write. */
632 DB_LOCK_IREAD, /* Intent to share/read. */
633 DB_LOCK_IWR /* Intent to read and write. */
634 } db_lockmode_t;
635
636 /*
637 * Status of a lock.
638 */
639 typedef enum {
640 DB_LSTAT_ABORTED, /* Lock belongs to an aborted txn. */
641 DB_LSTAT_ERR, /* Lock is bad. */
642 DB_LSTAT_FREE, /* Lock is unallocated. */
643 DB_LSTAT_HELD, /* Lock is currently held. */
644 DB_LSTAT_NOGRANT, /* Lock was not granted. */
645 DB_LSTAT_PENDING, /* Lock was waiting and has been
646 * promoted; waiting for the owner
647 * to run and upgrade it to held. */
648 DB_LSTAT_WAITING /* Lock is on the wait queue. */
649 } db_status_t;
650
651 /* Lock request structure. */
652 struct __db_lockreq {
653 db_lockop_t op; /* Operation. */
654 db_lockmode_t mode; /* Requested mode. */
655 u_int32_t locker; /* Locker identity. */
656 DBT *obj; /* Object being locked. */
657 DB_LOCK lock; /* Lock returned. */
658 };
659
660 /*
661 * Commonly used conflict matrices.
662 *
663 * Standard Read/Write (or exclusive/shared) locks.
664 */
665 #define DB_LOCK_RW_N 3
666 extern const u_int8_t db_rw_conflicts[];
667
668 /* Multi-granularity locking. */
669 #define DB_LOCK_RIW_N 6
670 extern const u_int8_t db_riw_conflicts[];
671
672 struct __db_lock_stat {
673 u_int32_t st_magic; /* Lock file magic number. */
674 u_int32_t st_version; /* Lock file version number. */
675 u_int32_t st_maxlocks; /* Maximum number of locks in table. */
676 u_int32_t st_nmodes; /* Number of lock modes. */
677 u_int32_t st_numobjs; /* Number of objects. */
678 u_int32_t st_nlockers; /* Number of lockers. */
679 u_int32_t st_nconflicts; /* Number of lock conflicts. */
680 u_int32_t st_nrequests; /* Number of lock gets. */
681 u_int32_t st_nreleases; /* Number of lock puts. */
682 u_int32_t st_ndeadlocks; /* Number of lock deadlocks. */
683 u_int32_t st_region_wait; /* Region lock granted after wait. */
684 u_int32_t st_region_nowait; /* Region lock granted without wait. */
685 u_int32_t st_refcnt; /* Region reference count. */
686 u_int32_t st_regsize; /* Region size. */
687 };
688
689 #if defined(__cplusplus)
690 extern "C" {
691 #endif
692 int lock_close __P((DB_LOCKTAB *));
693 int lock_detect __P((DB_LOCKTAB *, u_int32_t, u_int32_t));
694 int lock_get __P((DB_LOCKTAB *,
695 u_int32_t, u_int32_t, const DBT *, db_lockmode_t, DB_LOCK *));
696 int lock_id __P((DB_LOCKTAB *, u_int32_t *));
697 int lock_open __P((const char *,
698 u_int32_t, int, DB_ENV *, DB_LOCKTAB **));
699 int lock_put __P((DB_LOCKTAB *, DB_LOCK));
700 int lock_tget __P((DB_LOCKTAB *,
701 DB_TXN *, u_int32_t, const DBT *, db_lockmode_t, DB_LOCK *));
702 int lock_stat __P((DB_LOCKTAB *, DB_LOCK_STAT **, void *(*)(size_t)));
703 int lock_unlink __P((const char *, int, DB_ENV *));
704 int lock_vec __P((DB_LOCKTAB *,
705 u_int32_t, u_int32_t, DB_LOCKREQ *, int, DB_LOCKREQ **));
706 int lock_tvec __P((DB_LOCKTAB *,
707 DB_TXN *, u_int32_t, DB_LOCKREQ *, int, DB_LOCKREQ **));
708 #if defined(__cplusplus)
709 }
710 #endif
711
712 /*******************************************************
713 * Logging.
714 *******************************************************/
715 /* Flag values for log_archive(). */
716 #define DB_ARCH_ABS 0x001 /* Absolute pathnames. */
717 #define DB_ARCH_DATA 0x002 /* Data files. */
718 #define DB_ARCH_LOG 0x004 /* Log files. */
719
720 /*
721 * A DB_LSN has two parts, a fileid which identifies a specific file, and an
722 * offset within that file. The fileid is an unsigned 4-byte quantity that
723 * uniquely identifies a file within the log directory -- currently a simple
724 * counter inside the log. The offset is also an unsigned 4-byte value. The
725 * log manager guarantees the offset is never more than 4 bytes by switching
726 * to a new log file before the maximum length imposed by an unsigned 4-byte
727 * offset is reached.
728 */
729 struct __db_lsn {
730 u_int32_t file; /* File ID. */
731 u_int32_t offset; /* File offset. */
732 };
733
734 /* Log statistics structure. */
735 struct __db_log_stat {
736 u_int32_t st_magic; /* Log file magic number. */
737 u_int32_t st_version; /* Log file version number. */
738 int st_mode; /* Log file mode. */
739 u_int32_t st_lg_max; /* Maximum log file size. */
740 u_int32_t st_w_bytes; /* Bytes to log. */
741 u_int32_t st_w_mbytes; /* Megabytes to log. */
742 u_int32_t st_wc_bytes; /* Bytes to log since checkpoint. */
743 u_int32_t st_wc_mbytes; /* Megabytes to log since checkpoint. */
744 u_int32_t st_wcount; /* Total syncs to the log. */
745 u_int32_t st_scount; /* Total writes to the log. */
746 u_int32_t st_region_wait; /* Region lock granted after wait. */
747 u_int32_t st_region_nowait; /* Region lock granted without wait. */
748 u_int32_t st_cur_file; /* Current log file number. */
749 u_int32_t st_cur_offset; /* Current log file offset. */
750 u_int32_t st_refcnt; /* Region reference count. */
751 u_int32_t st_regsize; /* Region size. */
752 };
753
754 #if defined(__cplusplus)
755 extern "C" {
756 #endif
757 int log_archive __P((DB_LOG *, char **[], u_int32_t, void *(*)(size_t)));
758 int log_close __P((DB_LOG *));
759 int log_compare __P((const DB_LSN *, const DB_LSN *));
760 int log_file __P((DB_LOG *, const DB_LSN *, char *, size_t));
761 int log_flush __P((DB_LOG *, const DB_LSN *));
762 int log_get __P((DB_LOG *, DB_LSN *, DBT *, u_int32_t));
763 int log_open __P((const char *, u_int32_t, int, DB_ENV *, DB_LOG **));
764 int log_put __P((DB_LOG *, DB_LSN *, const DBT *, u_int32_t));
765 int log_register __P((DB_LOG *, DB *, const char *, DBTYPE, u_int32_t *));
766 int log_stat __P((DB_LOG *, DB_LOG_STAT **, void *(*)(size_t)));
767 int log_unlink __P((const char *, int, DB_ENV *));
768 int log_unregister __P((DB_LOG *, u_int32_t));
769 #if defined(__cplusplus)
770 }
771 #endif
772
773 /*******************************************************
774 * Mpool
775 *******************************************************/
776 /* Flag values for memp_fget(). */
777 #define DB_MPOOL_CREATE 0x001 /* Create a page. */
778 #define DB_MPOOL_LAST 0x002 /* Return the last page. */
779 #define DB_MPOOL_NEW 0x004 /* Create a new page. */
780
781 /* Flag values for memp_fput(), memp_fset(). */
782 #define DB_MPOOL_CLEAN 0x001 /* Clear modified bit. */
783 #define DB_MPOOL_DIRTY 0x002 /* Page is modified. */
784 #define DB_MPOOL_DISCARD 0x004 /* Don't cache the page. */
785
786 /* Mpool statistics structure. */
787 struct __db_mpool_stat {
788 size_t st_cachesize; /* Cache size. */
789 u_int32_t st_cache_hit; /* Pages found in the cache. */
790 u_int32_t st_cache_miss; /* Pages not found in the cache. */
791 u_int32_t st_map; /* Pages from mapped files. */
792 u_int32_t st_page_create; /* Pages created in the cache. */
793 u_int32_t st_page_in; /* Pages read in. */
794 u_int32_t st_page_out; /* Pages written out. */
795 u_int32_t st_ro_evict; /* Clean pages forced from the cache. */
796 u_int32_t st_rw_evict; /* Dirty pages forced from the cache. */
797 u_int32_t st_hash_buckets; /* Number of hash buckets. */
798 u_int32_t st_hash_searches; /* Total hash chain searches. */
799 u_int32_t st_hash_longest; /* Longest hash chain searched. */
800 u_int32_t st_hash_examined; /* Total hash entries searched. */
801 u_int32_t st_page_clean; /* Clean pages. */
802 u_int32_t st_page_dirty; /* Dirty pages. */
803 u_int32_t st_page_trickle; /* Pages written by memp_trickle. */
804 u_int32_t st_region_wait; /* Region lock granted after wait. */
805 u_int32_t st_region_nowait; /* Region lock granted without wait. */
806 u_int32_t st_refcnt; /* Region reference count. */
807 u_int32_t st_regsize; /* Region size. */
808 };
809
810 /* Mpool file open information structure. */
811 struct __db_mpool_finfo {
812 int ftype; /* File type. */
813 DBT *pgcookie; /* Byte-string passed to pgin/pgout. */
814 u_int8_t *fileid; /* Unique file ID. */
815 int32_t lsn_offset; /* LSN offset in page. */
816 u_int32_t clear_len; /* Cleared length on created pages. */
817 };
818
819 /* Mpool file statistics structure. */
820 struct __db_mpool_fstat {
821 char *file_name; /* File name. */
822 size_t st_pagesize; /* Page size. */
823 u_int32_t st_cache_hit; /* Pages found in the cache. */
824 u_int32_t st_cache_miss; /* Pages not found in the cache. */
825 u_int32_t st_map; /* Pages from mapped files. */
826 u_int32_t st_page_create; /* Pages created in the cache. */
827 u_int32_t st_page_in; /* Pages read in. */
828 u_int32_t st_page_out; /* Pages written out. */
829 };
830
831 #if defined(__cplusplus)
832 extern "C" {
833 #endif
834 int memp_close __P((DB_MPOOL *));
835 int memp_fclose __P((DB_MPOOLFILE *));
836 int memp_fget __P((DB_MPOOLFILE *, db_pgno_t *, u_int32_t, void *));
837 int memp_fopen __P((DB_MPOOL *, const char *,
838 u_int32_t, int, size_t, DB_MPOOL_FINFO *, DB_MPOOLFILE **));
839 int memp_fput __P((DB_MPOOLFILE *, void *, u_int32_t));
840 int memp_fset __P((DB_MPOOLFILE *, void *, u_int32_t));
841 int memp_fsync __P((DB_MPOOLFILE *));
842 int memp_open __P((const char *, u_int32_t, int, DB_ENV *, DB_MPOOL **));
843 int memp_register __P((DB_MPOOL *, int,
844 int (*)(db_pgno_t, void *, DBT *),
845 int (*)(db_pgno_t, void *, DBT *)));
846 int memp_stat __P((DB_MPOOL *,
847 DB_MPOOL_STAT **, DB_MPOOL_FSTAT ***, void *(*)(size_t)));
848 int memp_sync __P((DB_MPOOL *, DB_LSN *));
849 int memp_trickle __P((DB_MPOOL *, int, int *));
850 int memp_unlink __P((const char *, int, DB_ENV *));
851 #if defined(__cplusplus)
852 }
853 #endif
854
855 /*******************************************************
856 * Transactions.
857 *******************************************************/
858 #define DB_TXNVERSION 1
859 #define DB_TXNMAGIC 0x041593
860
861 /* Operations values to the tx_recover() function. */
862 #define DB_TXN_BACKWARD_ROLL 1 /* Read the log backwards. */
863 #define DB_TXN_FORWARD_ROLL 2 /* Read the log forwards. */
864 #define DB_TXN_OPENFILES 3 /* Read for open files. */
865 #define DB_TXN_REDO 4 /* Redo the operation. */
866 #define DB_TXN_UNDO 5 /* Undo the operation. */
867
868 /* Internal transaction status values. */
869
870 /* Transaction statistics structure. */
871 struct __db_txn_active {
872 u_int32_t txnid; /* Transaction ID */
873 DB_LSN lsn; /* Lsn of the begin record */
874 };
875
876 struct __db_txn_stat {
877 DB_LSN st_last_ckp; /* lsn of the last checkpoint */
878 DB_LSN st_pending_ckp; /* last checkpoint did not finish */
879 time_t st_time_ckp; /* time of last checkpoint */
880 u_int32_t st_last_txnid; /* last transaction id given out */
881 u_int32_t st_maxtxns; /* maximum number of active txns */
882 u_int32_t st_naborts; /* number of aborted transactions */
883 u_int32_t st_nbegins; /* number of begun transactions */
884 u_int32_t st_ncommits; /* number of committed transactions */
885 u_int32_t st_nactive; /* number of active transactions */
886 DB_TXN_ACTIVE
887 *st_txnarray; /* array of active transactions */
888 u_int32_t st_region_wait; /* Region lock granted after wait. */
889 u_int32_t st_region_nowait; /* Region lock granted without wait. */
890 u_int32_t st_refcnt; /* Region reference count. */
891 u_int32_t st_regsize; /* Region size. */
892 };
893
894 #if defined(__cplusplus)
895 extern "C" {
896 #endif
897 int txn_abort __P((DB_TXN *));
898 int txn_begin __P((DB_TXNMGR *, DB_TXN *, DB_TXN **));
899 int txn_checkpoint __P((const DB_TXNMGR *, u_int32_t, u_int32_t));
900 int txn_commit __P((DB_TXN *));
901 int txn_close __P((DB_TXNMGR *));
902 u_int32_t txn_id __P((DB_TXN *));
903 int txn_open __P((const char *, u_int32_t, int, DB_ENV *, DB_TXNMGR **));
904 int txn_prepare __P((DB_TXN *));
905 int txn_stat __P((DB_TXNMGR *, DB_TXN_STAT **, void *(*)(size_t)));
906 int txn_unlink __P((const char *, int, DB_ENV *));
907 #if defined(__cplusplus)
908 }
909 #endif
910
911 #ifndef DB_DBM_HSEARCH
912 #define DB_DBM_HSEARCH 0 /* No historic interfaces by default. */
913 #endif
914 #if DB_DBM_HSEARCH != 0
915 /*******************************************************
916 * Dbm/Ndbm historic interfaces.
917 *******************************************************/
918 #define DBM_INSERT 0 /* Flags to dbm_store(). */
919 #define DBM_REPLACE 1
920
921 /*
922 * The db(3) support for ndbm(3) always appends this suffix to the
923 * file name to avoid overwriting the user's original database.
924 */
925 #define DBM_SUFFIX ".db"
926
927 #if defined(_XPG4_2)
928 typedef struct {
929 char *dptr;
930 size_t dsize;
931 } datum;
932 #else
933 typedef struct {
934 char *dptr;
935 int dsize;
936 } datum;
937 #endif
938
939 /*
940 * Translate DBM calls into DB calls so that DB doesn't step on the
941 * application's name space.
942 *
943 * The global variables dbrdonly, dirf and pagf were not retained when
944 * 4BSD replaced the dbm interface with ndbm, and are not support here.
945 */
946 #define dbminit(a) __db_dbm_init(a)
947 #define dbmclose __db_dbm_close
948 #if !defined(__cplusplus)
949 #define delete(a) __db_dbm_delete(a)
950 #endif
951 #define fetch(a) __db_dbm_fetch(a)
952 #define firstkey __db_dbm_firstkey
953 #define nextkey(a) __db_dbm_nextkey(a)
954 #define store(a, b) __db_dbm_store(a, b)
955
956 /* Prototype the DB calls. */
957 #if defined(__cplusplus)
958 extern "C" {
959 #endif
960 int __db_dbm_close __P((void));
961 int __db_dbm_dbrdonly __P((void));
962 int __db_dbm_delete __P((datum));
963 int __db_dbm_dirf __P((void));
964 datum __db_dbm_fetch __P((datum));
965 datum __db_dbm_firstkey __P((void));
966 int __db_dbm_init __P((char *));
967 datum __db_dbm_nextkey __P((datum));
968 int __db_dbm_pagf __P((void));
969 int __db_dbm_store __P((datum, datum));
970 #if defined(__cplusplus)
971 }
972 #endif
973
974 /*
975 * Translate NDBM calls into DB calls so that DB doesn't step on the
976 * application's name space.
977 */
978 #define dbm_clearerr(a) __db_ndbm_clearerr(a)
979 #define dbm_close(a) __db_ndbm_close(a)
980 #define dbm_delete(a, b) __db_ndbm_delete(a, b)
981 #define dbm_dirfno(a) __db_ndbm_dirfno(a)
982 #define dbm_error(a) __db_ndbm_error(a)
983 #define dbm_fetch(a, b) __db_ndbm_fetch(a, b)
984 #define dbm_firstkey(a) __db_ndbm_firstkey(a)
985 #define dbm_nextkey(a) __db_ndbm_nextkey(a)
986 #define dbm_open(a, b, c) __db_ndbm_open(a, b, c)
987 #define dbm_pagfno(a) __db_ndbm_pagfno(a)
988 #define dbm_rdonly(a) __db_ndbm_rdonly(a)
989 #define dbm_store(a, b, c, d) __db_ndbm_store(a, b, c, d)
990
991 /* Prototype the DB calls. */
992 #if defined(__cplusplus)
993 extern "C" {
994 #endif
995 int __db_ndbm_clearerr __P((DBM *));
996 void __db_ndbm_close __P((DBM *));
997 int __db_ndbm_delete __P((DBM *, datum));
998 int __db_ndbm_dirfno __P((DBM *));
999 int __db_ndbm_error __P((DBM *));
1000 datum __db_ndbm_fetch __P((DBM *, datum));
1001 datum __db_ndbm_firstkey __P((DBM *));
1002 datum __db_ndbm_nextkey __P((DBM *));
1003 DBM *__db_ndbm_open __P((const char *, int, int));
1004 int __db_ndbm_pagfno __P((DBM *));
1005 int __db_ndbm_rdonly __P((DBM *));
1006 int __db_ndbm_store __P((DBM *, datum, datum, int));
1007 #if defined(__cplusplus)
1008 }
1009 #endif
1010
1011 /*******************************************************
1012 * Hsearch historic interface.
1013 *******************************************************/
1014 typedef enum {
1015 FIND, ENTER
1016 } ACTION;
1017
1018 typedef struct entry {
1019 char *key;
1020 char *data;
1021 } ENTRY;
1022
1023 /*
1024 * Translate HSEARCH calls into DB calls so that DB doesn't step on the
1025 * application's name space.
1026 */
1027 #define hcreate(a) __db_hcreate(a)
1028 #define hdestroy __db_hdestroy
1029 #define hsearch(a, b) __db_hsearch(a, b)
1030
1031 /* Prototype the DB calls. */
1032 #if defined(__cplusplus)
1033 extern "C" {
1034 #endif
1035 int __db_hcreate __P((size_t));
1036 void __db_hdestroy __P((void));
1037 ENTRY *__db_hsearch __P((ENTRY, ACTION));
1038 #if defined(__cplusplus)
1039 }
1040 #endif
1041 #endif /* DB_DBM_HSEARCH */
1042
1043 /*
1044 * XXX
1045 * MacOS: Reset Metrowerks C enum sizes.
1046 */
1047 #ifdef __MWERKS__
1048 #pragma enumsalwaysint reset
1049 #endif
1050 #endif /* !_DB_H_ */
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