1 #ifndef H_RPMDB_INTERNAL
2 #define H_RPMDB_INTERNAL
8 #include <rpm/rpmtypes.h>
9 #include <rpm/rpmutil.h>
13 typedef struct _dbiIndexItem * dbiIndexItem;
16 * A single element (i.e. inverted list from tag values) of a database.
18 typedef struct _dbiIndexSet * dbiIndexSet;
22 typedef struct _dbiIndex * dbiIndex;
24 /* this will break if sizeof(int) != 4 */
26 * A single item from an index database (i.e. the "data returned").
27 * Note: In rpm-3.0.4 and earlier, this structure was passed by value,
28 * and was identical to the "data saved" structure below.
30 struct _dbiIndexItem {
31 unsigned int hdrNum; /*!< header instance in db */
32 unsigned int tagNum; /*!< tag index in header */
36 * Items retrieved from the index database.
39 struct _dbiIndexItem * recs; /*!< array of records */
40 unsigned int count; /*!< number of records */
41 size_t alloced; /*!< alloced size */
45 * Private methods for accessing an index database.
48 int dbv_major; /*!< Berkeley db version major */
49 int dbv_minor; /*!< Berkeley db version minor */
50 int dbv_patch; /*!< Berkeley db version patch */
53 * Return handle for an index database.
54 * @param rpmdb rpm database
55 * @param rpmtag rpm tag
56 * @return 0 on success
58 int (*open) (rpmdb rpmdb, rpmTag rpmtag, dbiIndex * dbip);
61 * Close index database, and destroy database handle.
62 * @param dbi index database handle
63 * @param flags (unused)
64 * @return 0 on success
66 int (*close) (dbiIndex dbi, unsigned int flags);
69 * Flush pending operations to disk.
70 * @param dbi index database handle
71 * @param flags (unused)
72 * @return 0 on success
74 int (*sync) (dbiIndex dbi, unsigned int flags);
77 * Open database cursor.
78 * @param dbi index database handle
79 * @param txnid database transaction handle
80 * @retval dbcp address of new database cursor
81 * @param dbiflags DB_WRITECURSOR or 0
82 * @return 0 on success
84 int (*copen) (dbiIndex dbi, DB_TXN * txnid,
85 DBC ** dbcp, unsigned int dbiflags);
88 * Close database cursor.
89 * @param dbi index database handle
90 * @param dbcursor database cursor
91 * @param flags (unused)
92 * @return 0 on success
94 int (*cclose) (dbiIndex dbi, DBC * dbcursor, unsigned int flags);
97 * Delete (key,data) pair(s) using db->del or dbcursor->c_del.
98 * @param dbi index database handle
99 * @param dbcursor database cursor (NULL will use db->del)
100 * @param key delete key value/length/flags
101 * @param data delete data value/length/flags
102 * @param flags (unused)
103 * @return 0 on success
105 int (*cdel) (dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
109 * Retrieve (key,data) pair using db->get or dbcursor->c_get.
110 * @param dbi index database handle
111 * @param dbcursor database cursor (NULL will use db->get)
112 * @param key retrieve key value/length/flags
113 * @param data retrieve data value/length/flags
114 * @param flags (unused)
115 * @return 0 on success
117 int (*cget) (dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
121 * Store (key,data) pair using db->put or dbcursor->c_put.
122 * @param dbi index database handle
123 * @param dbcursor database cursor (NULL will use db->put)
124 * @param key store key value/length/flags
125 * @param data store data value/length/flags
126 * @param flags (unused)
127 * @return 0 on success
129 int (*cput) (dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
133 * Retrieve count of (possible) duplicate items using dbcursor->c_count.
134 * @param dbi index database handle
135 * @param dbcursor database cursor
136 * @param countp address of count
137 * @param flags (unused)
138 * @return 0 on success
140 int (*ccount) (dbiIndex dbi, DBC * dbcursor,
141 unsigned int * countp,
145 * Is database byte swapped?
146 * @param dbi index database handle
149 int (*byteswapped) (dbiIndex dbi);
152 * Save statistics in database handle.
153 * @param dbi index database handle
154 * @param flags retrieve statistics that don't require traversal?
155 * @return 0 on success
157 int (*stat) (dbiIndex dbi, unsigned int flags);
161 * Describes an index database (implemented on Berkeley db3 functionality).
164 char * dbi_root; /*!< chroot(2) component of path */
165 char * dbi_home; /*!< directory component of path */
166 char * dbi_file; /*!< file component of path */
168 char * dbi_tmpdir; /*!< temporary directory */
170 int dbi_ecflags; /*!< db_env_create flags */
171 int dbi_cflags; /*!< db_create flags */
172 int dbi_oeflags; /*!< common (db,dbenv}->open flags */
173 int dbi_eflags; /*!< dbenv->open flags */
174 int dbi_oflags; /*!< db->open flags */
175 int dbi_tflags; /*!< dbenv->txn_begin flags */
177 int dbi_type; /*!< db index type */
178 unsigned dbi_mode; /*!< mode to use on open */
179 int dbi_perms; /*!< file permission to use on open */
180 long dbi_shmkey; /*!< shared memory base key */
181 int dbi_api; /*!< Berkeley API type */
183 int dbi_verify_on_close;
184 int dbi_use_dbenv; /*!< use db environment? */
185 int dbi_permit_dups; /*!< permit duplicate entries? */
186 int dbi_no_fsync; /*!< no-op fsync for db */
187 int dbi_no_dbsync; /*!< don't call dbiSync */
188 int dbi_lockdbfd; /*!< do fcntl lock on db fd */
189 int dbi_temporary; /*!< non-persistent */
194 unsigned long dbi_cl_timeout;
195 unsigned long dbi_sv_timeout;
197 /* dbenv parameters */
199 /* XXX db-4.3.14 adds dbenv as 1st arg. */
200 void (*db_errcall) (void * dbenv, const char *db_errpfx, char *buffer);
206 /* mpool sub-system parameters */
207 int dbi_mmapsize; /*!< (10Mb) */
208 int dbi_cachesize; /*!< (128Kb) */
209 /* lock sub-system parameters */
210 unsigned int dbi_lk_max;
211 unsigned int dbi_lk_detect;
213 unsigned char * dbi_lk_conflicts;
214 /* log sub-system parameters */
215 unsigned int dbi_lg_max;
216 unsigned int dbi_lg_bsize;
217 /* transaction sub-system parameters */
218 unsigned int dbi_tx_max;
220 int (*dbi_tx_recover) (DB_ENV *dbenv, DBT *log_rec,
221 DB_LSN *lsnp, int redo, void *info);
223 /* dbinfo parameters */
224 int dbi_pagesize; /*!< (fs blksize) */
225 void * (*dbi_malloc) (size_t nbytes);
226 /* hash access parameters */
227 unsigned int dbi_h_ffactor; /*!< */
228 unsigned int (*dbi_h_hash_fcn) (DB *, const void *bytes,
229 unsigned int length);
230 unsigned int dbi_h_nelem; /*!< */
231 unsigned int dbi_h_flags; /*!< DB_DUP, DB_DUPSORT */
232 int (*dbi_h_dup_compare_fcn) (DB *, const DBT *, const DBT *);
233 /* btree access parameters */
236 int (*dbi_bt_compare_fcn) (DB *, const DBT *, const DBT *);
237 int (*dbi_bt_dup_compare_fcn) (DB *, const DBT *, const DBT *);
238 size_t (*dbi_bt_prefix_fcn) (DB *, const DBT *, const DBT *);
239 /* recno access parameters */
242 unsigned int dbi_re_len;
244 char * dbi_re_source;
245 /* queue access parameters */
246 unsigned int dbi_q_extentsize;
248 rpmdb dbi_rpmdb; /*!< the parent rpm database */
249 rpmTag dbi_rpmtag; /*!< rpm tag used for index */
250 int dbi_jlen; /*!< size of join key */
252 DB * dbi_db; /*!< Berkeley DB * handle */
253 DB_TXN * dbi_txnid; /*!< Bekerley DB_TXN * transaction id */
254 void * dbi_stats; /*!< Berkeley db statistics */
256 const struct _dbiVec * dbi_vec; /*!< private methods */
261 * Describes the collection of index databases used by rpm.
264 char * db_root;/*!< path prefix */
265 char * db_home;/*!< directory path */
267 int db_mode; /*!< open mode */
268 int db_perms; /*!< open permissions */
269 int db_api; /*!< Berkeley API type */
273 int db_chrootDone; /*!< If chroot(2) done, ignore db_root. */
274 void (*db_errcall) (const char *db_errpfx, char *buffer);
276 void * (*db_malloc) (size_t nbytes);
277 void * (*db_realloc) (void * ptr,
279 void (*db_free) (void * ptr);
280 unsigned char * db_bits; /*!< package instance bit mask. */
281 int db_nbits; /*!< no. of bits in mask. */
284 void * db_dbenv; /*!< Berkeley DB_ENV handle. */
285 int db_ndbi; /*!< No. of tag indices. */
286 dbiIndex * _dbi; /*!< Tag indices. */
288 struct rpmop_s db_getops;
289 struct rpmop_s db_putops;
290 struct rpmop_s db_delops;
292 int nrefs; /*!< Reference count. */
295 /* for RPM's internal use only */
300 RPMDB_FLAG_JUSTCHECK = (1 << 0),
301 RPMDB_FLAG_MINIMAL = (1 << 1),
302 RPMDB_FLAG_CHROOT = (1 << 2)
310 * Return new configured index database handle instance.
311 * @param rpmdb rpm database
312 * @param rpmtag rpm tag
313 * @return index database handle
316 dbiIndex db3New(rpmdb rpmdb, rpmTag rpmtag);
319 * Destroy index database handle instance.
320 * @param dbi index database handle
321 * @return NULL always
324 dbiIndex db3Free( dbiIndex dbi);
327 * Format db3 open flags for debugging print.
328 * @param dbflags db open flags
329 * @param print_dbenv_flags format db env flags instead?
330 * @return formatted flags (malloced)
333 char * prDbiOpenFlags(int dbflags, int print_dbenv_flags);
336 * Return handle for an index database.
337 * @param db rpm database
338 * @param rpmtag rpm tag
339 * @param flags (unused)
340 * @return index database handle
343 dbiIndex dbiOpen(rpmdb db, rpmTag rpmtag,
346 /* FIX: vector annotations */
348 * Open a database cursor.
349 * @param dbi index database handle
350 * @param txnid database transaction handle
351 * @retval dbcp returned database cursor
352 * @param flags DB_WRITECURSOR if writing, or 0
353 * @return 0 on success
356 int dbiCopen(dbiIndex dbi, DB_TXN * txnid,
357 DBC ** dbcp, unsigned int flags)
359 return (*dbi->dbi_vec->copen) (dbi, txnid, dbcp, flags);
363 * Close a database cursor.
364 * @param dbi index database handle
365 * @param dbcursor database cursor
366 * @param flags (unused)
367 * @return 0 on success
370 int dbiCclose(dbiIndex dbi, DBC * dbcursor, unsigned int flags)
372 return (*dbi->dbi_vec->cclose) (dbi, dbcursor, flags);
376 * Delete (key,data) pair(s) from index database.
377 * @param dbi index database handle
378 * @param dbcursor database cursor (NULL will use db->del)
379 * @param key delete key value/length/flags
380 * @param data delete data value/length/flags
381 * @param flags (unused)
382 * @return 0 on success
385 int dbiDel(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
389 assert(key->data != NULL && key->size > 0);
390 (void) rpmswEnter(&dbi->dbi_rpmdb->db_delops, 0);
391 rc = (dbi->dbi_vec->cdel) (dbi, dbcursor, key, data, flags);
392 (void) rpmswExit(&dbi->dbi_rpmdb->db_delops, data->size);
397 * Retrieve (key,data) pair from index database.
398 * @param dbi index database handle
399 * @param dbcursor database cursor (NULL will use db->get)
400 * @param key retrieve key value/length/flags
401 * @param data retrieve data value/length/flags
402 * @param flags (unused)
403 * @return 0 on success
406 int dbiGet(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
410 assert((flags == DB_NEXT) || (key->data != NULL && key->size > 0));
411 (void) rpmswEnter(&dbi->dbi_rpmdb->db_getops, 0);
412 rc = (dbi->dbi_vec->cget) (dbi, dbcursor, key, data, flags);
413 (void) rpmswExit(&dbi->dbi_rpmdb->db_getops, data->size);
418 * Store (key,data) pair in index database.
419 * @param dbi index database handle
420 * @param dbcursor database cursor (NULL will use db->put)
421 * @param key store key value/length/flags
422 * @param data store data value/length/flags
423 * @param flags (unused)
424 * @return 0 on success
427 int dbiPut(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
431 assert(key->data != NULL && key->size > 0 && data->data != NULL && data->size > 0);
432 (void) rpmswEnter(&dbi->dbi_rpmdb->db_putops, (ssize_t) 0);
433 rc = (dbi->dbi_vec->cput) (dbi, dbcursor, key, data, flags);
434 (void) rpmswExit(&dbi->dbi_rpmdb->db_putops, (ssize_t) data->size);
439 * Retrieve count of (possible) duplicate items.
440 * @param dbi index database handle
441 * @param dbcursor database cursor
442 * @param countp address of count
443 * @param flags (unused)
444 * @return 0 on success
447 int dbiCount(dbiIndex dbi, DBC * dbcursor, unsigned int * countp,
450 return (*dbi->dbi_vec->ccount) (dbi, dbcursor, countp, flags);
454 * Verify (and close) index database.
455 * @param dbi index database handle
456 * @param flags (unused)
457 * @return 0 on success
460 int dbiVerify(dbiIndex dbi, unsigned int flags)
462 dbi->dbi_verify_on_close = 1;
463 return (*dbi->dbi_vec->close) (dbi, flags);
467 * Close index database.
468 * @param dbi index database handle
469 * @param flags (unused)
470 * @return 0 on success
473 int dbiClose(dbiIndex dbi, unsigned int flags)
475 return (*dbi->dbi_vec->close) (dbi, flags);
479 * Flush pending operations to disk.
480 * @param dbi index database handle
481 * @param flags (unused)
482 * @return 0 on success
485 int dbiSync (dbiIndex dbi, unsigned int flags)
487 return (*dbi->dbi_vec->sync) (dbi, flags);
491 * Is database byte swapped?
492 * @param dbi index database handle
493 * @return 0 same order, 1 swapped order
496 int dbiByteSwapped(dbiIndex dbi)
498 if (dbi->dbi_byteswapped == -1)
499 dbi->dbi_byteswapped = (*dbi->dbi_vec->byteswapped) (dbi);
500 return dbi->dbi_byteswapped;
503 * Is database byte swapped?
504 * @param dbi index database handle
505 * @param flags DB_FAST_STAT or 0
506 * @return 0 on success
509 int dbiStat(dbiIndex dbi, unsigned int flags)
511 return (*dbi->dbi_vec->stat) (dbi, flags);
516 * Destroy set of index database items.
517 * @param set set of index database items
518 * @return NULL always
521 dbiIndexSet dbiFreeIndexSet(dbiIndexSet set);
524 * Count items in index database set.
525 * @param set set of index database items
526 * @return number of items
529 unsigned int dbiIndexSetCount(dbiIndexSet set);
532 * Return record offset of header from element in index database set.
533 * @param set set of index database items
534 * @param recno index of item in set
535 * @return record offset of header
538 unsigned int dbiIndexRecordOffset(dbiIndexSet set, int recno);
541 * Return file index from element in index database set.
542 * @param set set of index database items
543 * @param recno index of item in set
547 unsigned int dbiIndexRecordFileNumber(dbiIndexSet set, int recno);
550 * Return database iterator.
551 * @param mi rpm database iterator
552 * @param keyp key data (NULL for sequential access)
553 * @param keylen key data length (0 will use strlen(keyp))
554 * @return 0 on success
556 int rpmdbExtendIterator(rpmdbMatchIterator mi,
557 const void * keyp, size_t keylen);
560 * sort the iterator by (recnum, filenum)
561 * Return database iterator.
562 * @param mi rpm database iterator
564 void rpmdbSortIterator(rpmdbMatchIterator mi);
568 * * Mergesort, same arguments as qsort(2).
571 int mergesort(void *base, size_t nmemb, size_t size,
572 int (*cmp) (const void *, const void *));
574 /* mergesort is defined in stdlib.h on Mac OS X */
575 #endif /* __APPLE__ */