4 /** \ingroup rpmdb dbi db1 db3
6 * Access RPM indices using Berkeley DB interface(s).
15 typedef /*@abstract@*/ struct _dbiIndexItem * dbiIndexItem;
19 typedef /*@abstract@*/ struct _dbiIndex * dbiIndex;
21 /* this will break if sizeof(int) != 4 */
23 * A single item from an index database (i.e. the "data returned").
24 * Note: In rpm-3.0.4 and earlier, this structure was passed by value,
25 * and was identical to the "data saved" structure below.
27 struct _dbiIndexItem {
28 unsigned int hdrNum; /*!< header instance in db */
29 unsigned int tagNum; /*!< tag index in header */
30 unsigned int fpNum; /*!< finger print index */
31 unsigned int dbNum; /*!< database index */
36 * A single item in an index database (i.e. the "data saved").
39 /*@unused@*/ unsigned int recOffset; /*!< byte offset of header in db */
40 /*@unused@*/ unsigned int fileNumber; /*!< file array index */
43 typedef struct _dbiIR * DBIR_t;
48 * Items retrieved from the index database.
51 /*@owned@*/ struct _dbiIndexItem * recs; /*!< array of records */
52 int count; /*!< number of records */
55 /* XXX hack to get prototypes correct */
56 #if !defined(DB_VERSION_MAJOR)
65 * Private methods for accessing an index database.
68 int dbv_major; /*!< Berkeley db version major */
69 int dbv_minor; /*!< Berkeley db version minor */
70 int dbv_patch; /*!< Berkeley db version patch */
73 * Return handle for an index database.
74 * @param rpmdb rpm database
75 * @param rpmtag rpm tag
76 * @return 0 on success
78 int (*open) (rpmdb rpmdb, int rpmtag, /*@out@*/ dbiIndex * dbip)
79 /*@modifies *dbip @*/;
82 * Close index database, and destroy database handle.
83 * @param dbi index database handle
84 * @param flags (unused)
85 * @return 0 on success
87 int (*close) (/*@only@*/ dbiIndex dbi, unsigned int flags)
88 /*@modifies dbi, fileSystem @*/;
91 * Flush pending operations to disk.
92 * @param dbi index database handle
93 * @param flags (unused)
94 * @return 0 on success
96 int (*sync) (dbiIndex dbi, unsigned int flags)
97 /*@modifies fileSystem @*/;
100 * Open database cursor.
101 * @param dbi index database handle
102 * @param dbcp address of database cursor
103 * @param flags (unused)
105 int (*copen) (dbiIndex dbi, /*@out@*/ DBC ** dbcp, unsigned int flags)
106 /*@modifies dbi, *dbcp @*/;
109 * Close database cursor.
110 * @param dbi index database handle
111 * @param dbcursor database cursor
112 * @param flags (unused)
114 int (*cclose) (dbiIndex dbi, /*@only@*/ DBC * dbcursor, unsigned int flags)
115 /*@modifies dbi, *dbcursor @*/;
118 * Delete (key,data) pair(s) using db->del or dbcursor->c_del.
119 * @param dbi index database handle
120 * @param dbcursor database cursor
121 * @param keyp key data
122 * @param keylen key data length
123 * @param flags (unused)
124 * @return 0 on success
126 int (*cdel) (dbiIndex dbi, DBC * dbcursor,
127 const void * keyp, size_t keylen, unsigned int flags)
128 /*@modifies *dbcursor, fileSystem @*/;
131 * Retrieve (key,data) pair using db->get or dbcursor->c_get.
132 * @param dbi index database handle
133 * @param dbcursor database cursor
134 * @param keypp address of key data
135 * @param keylenp address of key data length
136 * @param datapp address of data pointer
137 * @param datalenp address of data length
138 * @param flags (unused)
139 * @return 0 on success
141 int (*cget) (dbiIndex dbi, DBC * dbcursor,
142 /*@null@*/ void ** keypp, /*@null@*/ size_t * keylenp,
143 /*@null@*/ void ** datapp, /*@null@*/ size_t * datalenp,
145 /*@modifies *dbcursor, *keypp, *keylenp, *datapp, *datalenp,
149 * Store (key,data) pair using db->put or dbcursor->c_put.
150 * @param dbi index database handle
151 * @param dbcursor database cursor
152 * @param keyp key data
153 * @param keylen key data length
154 * @param datap data pointer
155 * @param datalen data length
156 * @param flags (unused)
157 * @return 0 on success
159 int (*cput) (dbiIndex dbi, DBC * dbcursor,
160 const void * keyp, size_t keylen,
161 const void * datap, size_t datalen,
163 /*@modifies *dbcursor, fileSystem @*/;
166 * Retrieve count of (possible) duplicate items using dbcursor->c_count.
167 * @param dbi index database handle
168 * @param dbcursor database cursor
169 * @param countp address of count
170 * @param flags (unused)
171 * @return 0 on success
173 int (*ccount) (dbiIndex dbi, DBC * dbcursor,
174 /*@out@*/ unsigned int * countp,
176 /*@modifies *dbcursor @*/;
179 * Is database byte swapped?
180 * @param dbi index database handle
183 int (*byteswapped) (dbiIndex dbi)
187 * Save statistics in database handle.
188 * @param dbi index database handle
189 * @param flags retrieve statistics that don't require traversal?
190 * @return 0 on success
192 int (*stat) (dbiIndex dbi, unsigned int flags)
198 * Describes an index database (implemented on Berkeley db3 functionality).
201 /*@null@*/ const char * dbi_root;
202 /*@null@*/ const char * dbi_home;
203 /*@null@*/ const char * dbi_file;
204 /*@null@*/ const char * dbi_subfile;
206 int dbi_ecflags; /*!< db_env_create flags */
207 int dbi_cflags; /*!< db_create flags */
208 int dbi_oeflags; /*!< common (db,dbenv}->open flags */
209 int dbi_eflags; /*!< dbenv->open flags */
210 int dbi_oflags; /*!< db->open flags */
211 int dbi_tflags; /*!< dbenv->txn_begin flags */
213 int dbi_type; /*!< db index type */
214 unsigned dbi_mode; /*!< mode to use on open */
215 int dbi_perms; /*!< file permission to use on open */
216 long dbi_shmkey; /*!< shared memory base key */
217 int dbi_api; /*!< Berkeley API type */
219 int dbi_verify_on_close;
220 int dbi_tear_down; /*!< tear down dbenv on close */
221 int dbi_use_cursors;/*!< access with cursors? (always) */
222 int dbi_use_dbenv; /*!< use db environment? */
223 int dbi_permit_dups;/*!< permit duplicate entries? */
224 int dbi_get_rmw_cursor;
225 int dbi_no_fsync; /*!< no-op fsync for db */
226 int dbi_no_dbsync; /*!< don't call dbiSync */
227 int dbi_lockdbfd; /*!< do fcntl lock on db fd */
228 int dbi_temporary; /*!< non-persistent */
231 /*@null@*/ char * dbi_host;
235 /* dbenv parameters */
237 /*@unused@*/ /*@null@*/ void (*db_errcall) (const char *db_errpfx, char *buffer)
238 /*@modifies fileSystem @*/;
239 /*@unused@*/ /*@shared@*/ FILE * dbi_errfile;
240 const char * dbi_errpfx;
244 /* mpool sub-system parameters */
245 int dbi_mp_mmapsize; /*!< (10Mb) */
246 int dbi_mp_size; /*!< (128Kb) */
247 /* lock sub-system parameters */
248 unsigned int dbi_lk_max;
249 unsigned int dbi_lk_detect;
250 /*@unused@*/ int dbi_lk_nmodes;
251 /*@unused@*/ unsigned char * dbi_lk_conflicts;
252 /* log sub-system parameters */
253 unsigned int dbi_lg_max;
254 unsigned int dbi_lg_bsize;
255 /* transaction sub-system parameters */
256 unsigned int dbi_tx_max;
258 int (*dbi_tx_recover) (DB_ENV *dbenv, DBT *log_rec,
259 DB_LSN *lsnp, int redo, void *info)
260 /*@modifies fileSystem @*/;
262 /* dbinfo parameters */
263 int dbi_cachesize; /*!< */
264 int dbi_pagesize; /*!< (fs blksize) */
265 /*@unused@*/ /*@null@*/ void * (*dbi_malloc) (size_t nbytes)
267 /* hash access parameters */
268 unsigned int dbi_h_ffactor; /*!< */
269 /*@null@*/ unsigned int (*dbi_h_hash_fcn) (DB *, const void *bytes, unsigned int length) /*@*/;
270 unsigned int dbi_h_nelem; /*!< */
271 unsigned int dbi_h_flags; /*!< DB_DUP, DB_DUPSORT */
272 /*@null@*/ int (*dbi_h_dup_compare_fcn) (DB *, const DBT *, const DBT *) /*@*/;
273 /* btree access parameters */
276 /*@null@*/ int (*dbi_bt_compare_fcn) (DB *, const DBT *, const DBT *) /*@*/;
277 /*@null@*/ int (*dbi_bt_dup_compare_fcn) (DB *, const DBT *, const DBT *) /*@*/;
278 /*@null@*/ size_t (*dbi_bt_prefix_fcn) (DB *, const DBT *, const DBT *) /*@*/;
279 /* recno access parameters */
282 unsigned int dbi_re_len;
284 const char * dbi_re_source;
285 /* queue access parameters */
286 unsigned int dbi_q_extentsize;
288 /*@kept@*/ rpmdb dbi_rpmdb;
289 int dbi_rpmtag; /*!< rpm tag used for index */
290 int dbi_jlen; /*!< size of join key */
292 unsigned int dbi_lastoffset; /*!< db1 with falloc.c needs this */
294 /*@only@*//*@null@*/ void * dbi_db; /*!< dbi handle */
295 /*@only@*//*@null@*/ void * dbi_dbenv; /*!< */
296 /*@only@*//*@null@*/ void * dbi_dbinfo; /*!< */
297 /*@only@*//*@null@*/ void * dbi_rmw; /*!< db cursor (with DB_WRITECURSOR) */
298 /*@only@*//*@null@*/ void * dbi_stats; /*!< */
300 /*@observer@*/ const struct _dbiVec * dbi_vec; /*!< private methods */
305 * Describes the collection of index databases used by rpm.
308 /*@owned@*/ const char *db_root; /*!< path prefix */
309 /*@owned@*/ const char *db_home; /*!< directory path */
311 int db_mode; /*!< open mode */
312 int db_perms; /*!< open permissions */
313 int db_api; /*!< Berkeley API type */
316 /*@owned@*/ const char *db_errpfx;
317 void (*db_errcall) (const char *db_errpfx, char *buffer)
319 /*@shared@*/ FILE * db_errfile;
320 /*@only@*/ void * (*db_malloc) (size_t nbytes)
322 /*@only@*/ void * (*db_realloc) (/*@only@*//*@null@*/ void * ptr,
325 void (*db_free) (/*@only@*/ void * ptr)
326 /*@modifies *ptr @*/;
331 /* for RPM's internal use only */
336 RPMDB_FLAG_JUSTCHECK = (1 << 0),
337 RPMDB_FLAG_MINIMAL = (1 << 1),
339 RPMDB_FLAG_CHROOT = (1 << 2)
349 * Return new configured index database handle instance.
350 * @param rpmdb rpm database
352 /*@only@*/ /*@null@*/ dbiIndex db3New(/*@keep@*/ rpmdb rpmdb, int rpmtag)
356 * Destroy index database handle instance.
357 * @param dbi index database handle
358 * @return NULL always
360 /*@null@*/ dbiIndex db3Free( /*@only@*/ /*@null@*/ dbiIndex dbi)
364 * Format db3 open flags for debugging print.
365 * @param dbflags db open flags
366 * @param print_dbenv_flags format db env flags instead?
367 * @return formatted flags (static buffer)
370 /*@exposed@*/ extern const char *const prDbiOpenFlags(int dbflags,
371 int print_dbenv_flags)
376 * Return handle for an index database.
377 * @param db rpm database
378 * @param rpmtag rpm tag
379 * @param flags (unused)
380 * @return index database handle
382 /*@only@*/ /*@null@*/ dbiIndex dbiOpen(/*@null@*/ rpmdb db, int rpmtag,
387 * @param dbi index database handle
388 * @param dbiflags DBI_WRITECURSOR or DBI_ITERATOR
390 int dbiCopen(dbiIndex dbi, /*@out@*/ DBC ** dbcp, unsigned int dbiflags)
391 /*@modifies dbi, *dbcp @*/;
393 #define DBI_WRITECURSOR (1 << 0)
394 #define DBI_ITERATOR (1 << 1)
397 * @param dbi index database handle
398 * @param flags (unused)
400 int dbiCclose(dbiIndex dbi, /*@only@*/ DBC * dbcursor, unsigned int flags)
401 /*@modifies dbi, *dbcursor @*/;
404 * Delete (key,data) pair(s) from index database.
405 * @param dbi index database handle
406 * @param keyp key data
407 * @param keylen key data length
408 * @param flags (unused)
409 * @return 0 on success
411 int dbiDel(dbiIndex dbi, DBC * dbcursor, const void * keyp, size_t keylen,
413 /*@modifies *dbcursor, fileSystem @*/;
416 * Retrieve (key,data) pair from index database.
417 * @param dbi index database handle
418 * @param keypp address of key data
419 * @param keylenp address of key data length
420 * @param datapp address of data pointer
421 * @param datalenp address of data length
422 * @param flags (unused)
423 * @return 0 on success
425 int dbiGet(dbiIndex dbi, DBC * dbcursor, void ** keypp,
426 /*@null@*/ size_t * keylenp,
427 /*@null@*/ void ** datapp,
428 /*@null@*/ size_t * datalenp,
430 /*@modifies *dbcursor, **keypp, *keylenp, **datapp, *datalenp,
434 * Store (key,data) pair in index database.
435 * @param dbi index database handle
436 * @param keyp key data
437 * @param keylen key data length
438 * @param datap data pointer
439 * @param datalen data length
440 * @param flags (unused)
441 * @return 0 on success
443 int dbiPut(dbiIndex dbi, DBC * dbcursor, const void * keyp, size_t keylen,
444 const void * datap, size_t datalen, unsigned int flags)
445 /*@modifies *dbcursor, fileSystem @*/;
448 * Retrieve count of (possible) duplicate items.
449 * @param dbi index database handle
450 * @param dbcursor database cursor
451 * @param countp address of count
452 * @param flags (unused)
453 * @return 0 on success
456 int dbiCount(dbiIndex dbi, DBC * dbcursor, /*@out@*/ unsigned int * countp,
458 /*@modifies *dbcursor, fileSystem @*/;
461 * Verify (and close) index database.
462 * @param dbi index database handle
463 * @param flags (unused)
464 * @return 0 on success
466 int dbiVerify(/*@only@*/ dbiIndex dbi, unsigned int flags)
467 /*@modifies dbi, fileSystem @*/;
470 * Close index database.
471 * @param dbi index database handle
472 * @param flags (unused)
473 * @return 0 on success
475 int dbiClose(/*@only@*/ dbiIndex dbi, unsigned int flags)
476 /*@modifies dbi, fileSystem @*/;
479 * Flush pending operations to disk.
480 * @param dbi index database handle
481 * @param flags (unused)
482 * @return 0 on success
484 int dbiSync (dbiIndex dbi, unsigned int flags)
485 /*@modifies fileSystem @*/;
488 * Is database byte swapped?
489 * @param dbi index database handle
492 int dbiByteSwapped(dbiIndex dbi)
496 * Return base file name for db1 database (legacy).
497 * @param rpmtag rpm tag
498 * @return base file name of db1 database
500 char * db1basename(int rpmtag)
507 unsigned int rpmdbGetIteratorFileNum(rpmdbMatchIterator mi)
511 * @param db rpm database
513 int rpmdbFindFpList(/*@null@*/ rpmdb db, fingerPrint * fpList,
514 /*@out@*/dbiIndexSet * matchList, int numItems)
515 /*@modifies db, *matchList @*/;
518 * Destroy set of index database items.
519 * @param set set of index database items
520 * @return NULL always
522 /*@null@*/ dbiIndexSet dbiFreeIndexSet(/*@only@*/ /*@null@*/ dbiIndexSet set)
526 * Count items in index database set.
527 * @param set set of index database items
528 * @return number of items
530 unsigned int dbiIndexSetCount(dbiIndexSet set)
534 * Return record offset of header from element in index database set.
535 * @param set set of index database items
536 * @param recno index of item in set
537 * @return record offset of header
539 unsigned int dbiIndexRecordOffset(dbiIndexSet set, int recno)
543 * Return file index from element in index database set.
544 * @param set set of index database items
545 * @param recno index of item in set
548 unsigned int dbiIndexRecordFileNumber(dbiIndexSet set, int recno)