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 * Describes an index database (implemented on Berkeley db functionality).
48 char * dbi_file; /*!< file component of path */
50 char * dbi_tmpdir; /*!< temporary directory */
52 int dbi_ecflags; /*!< db_env_create flags */
53 int dbi_cflags; /*!< db_create flags */
54 int dbi_oeflags; /*!< common (db,dbenv}->open flags */
55 int dbi_eflags; /*!< dbenv->open flags */
56 int dbi_oflags; /*!< db->open flags */
57 int dbi_tflags; /*!< dbenv->txn_begin flags */
59 int dbi_type; /*!< db index type */
60 unsigned dbi_mode; /*!< mode to use on open */
61 int dbi_perms; /*!< file permission to use on open */
62 long dbi_shmkey; /*!< shared memory base key */
64 int dbi_verify_on_close;
65 int dbi_use_dbenv; /*!< use db environment? */
66 int dbi_permit_dups; /*!< permit duplicate entries? */
67 int dbi_no_fsync; /*!< no-op fsync for db */
68 int dbi_no_dbsync; /*!< don't call dbiSync */
69 int dbi_lockdbfd; /*!< do fcntl lock on db fd */
70 int dbi_temporary; /*!< non-persistent */
74 /* dbenv parameters */
76 /* XXX db-4.3.14 adds dbenv as 1st arg. */
77 void (*db_errcall) (void * dbenv, const char *db_errpfx, char *buffer);
83 /* mpool sub-system parameters */
84 int dbi_mmapsize; /*!< (10Mb) */
85 int dbi_cachesize; /*!< (128Kb) */
86 /* lock sub-system parameters */
87 unsigned int dbi_lk_max;
88 unsigned int dbi_lk_detect;
90 unsigned char * dbi_lk_conflicts;
91 /* log sub-system parameters */
92 unsigned int dbi_lg_max;
93 unsigned int dbi_lg_bsize;
94 /* transaction sub-system parameters */
95 unsigned int dbi_tx_max;
97 int (*dbi_tx_recover) (DB_ENV *dbenv, DBT *log_rec,
98 DB_LSN *lsnp, int redo, void *info);
100 /* dbinfo parameters */
101 int dbi_pagesize; /*!< (fs blksize) */
102 /* hash access parameters */
103 unsigned int dbi_h_ffactor; /*!< */
104 unsigned int (*dbi_h_hash_fcn) (DB *, const void *bytes,
105 unsigned int length);
106 unsigned int dbi_h_nelem; /*!< */
107 unsigned int dbi_h_flags; /*!< DB_DUP, DB_DUPSORT */
108 int (*dbi_h_dup_compare_fcn) (DB *, const DBT *, const DBT *);
109 /* btree access parameters */
112 int (*dbi_bt_compare_fcn) (DB *, const DBT *, const DBT *);
113 int (*dbi_bt_dup_compare_fcn) (DB *, const DBT *, const DBT *);
114 size_t (*dbi_bt_prefix_fcn) (DB *, const DBT *, const DBT *);
115 /* recno access parameters */
118 unsigned int dbi_re_len;
120 char * dbi_re_source;
121 /* queue access parameters */
122 unsigned int dbi_q_extentsize;
124 rpmdb dbi_rpmdb; /*!< the parent rpm database */
125 rpmTag dbi_rpmtag; /*!< rpm tag used for index */
126 int dbi_jlen; /*!< size of join key */
128 DB * dbi_db; /*!< Berkeley DB * handle */
129 DB_TXN * dbi_txnid; /*!< Bekerley DB_TXN * transaction id */
130 void * dbi_stats; /*!< Berkeley db statistics */
134 * Describes the collection of index databases used by rpm.
137 char * db_root;/*!< path prefix */
138 char * db_home;/*!< directory path */
139 char * db_fullpath; /*!< full db path including prefix */
141 int db_mode; /*!< open mode */
142 int db_perms; /*!< open permissions */
143 int db_api; /*!< Berkeley API type */
146 int db_chrootDone; /*!< If chroot(2) done, ignore db_root. */
147 int db_mkdirDone; /*!< Has db_home been created? */
148 void (*db_errcall) (const char *db_errpfx, char *buffer);
150 unsigned char * db_bits; /*!< package instance bit mask. */
151 int db_nbits; /*!< no. of bits in mask. */
154 void * db_dbenv; /*!< Berkeley DB_ENV handle. */
155 int db_ndbi; /*!< No. of tag indices. */
156 dbiIndex * _dbi; /*!< Tag indices. */
158 struct rpmop_s db_getops;
159 struct rpmop_s db_putops;
160 struct rpmop_s db_delops;
162 int nrefs; /*!< Reference count. */
165 /* for RPM's internal use only */
170 RPMDB_FLAG_JUSTCHECK = (1 << 0),
171 RPMDB_FLAG_MINIMAL = (1 << 1),
172 RPMDB_FLAG_CHROOT = (1 << 2)
180 * Return new configured index database handle instance.
181 * @param rpmdb rpm database
182 * @param rpmtag rpm tag
183 * @return index database handle
186 dbiIndex dbiNew(rpmdb rpmdb, rpmTag rpmtag);
189 * Destroy index database handle instance.
190 * @param dbi index database handle
191 * @return NULL always
194 dbiIndex dbiFree( dbiIndex dbi);
197 * Format dbi open flags for debugging print.
198 * @param dbflags db open flags
199 * @param print_dbenv_flags format db env flags instead?
200 * @return formatted flags (malloced)
203 char * prDbiOpenFlags(int dbflags, int print_dbenv_flags);
206 * Return handle for an index database.
207 * @param db rpm database
208 * @param rpmtag rpm tag
209 * @param flags (unused)
210 * @return index database handle
213 dbiIndex dbiOpen(rpmdb db, rpmTag rpmtag,
218 * Actually open the database of the index.
219 * @param db rpm database
220 * @param rpmtag rpm tag
221 * @param dbiIndex address of index database handle
222 * @return 0 on success
225 int dbiOpenDB(rpmdb rpmdb, rpmTag rpmtag, dbiIndex * dbip);
228 /* FIX: vector annotations */
230 * Open a database cursor.
231 * @param dbi index database handle
232 * @param txnid database transaction handle
233 * @retval dbcp returned database cursor
234 * @param flags DB_WRITECURSOR if writing, or 0
235 * @return 0 on success
238 int dbiCopen(dbiIndex dbi, DB_TXN * txnid,
239 DBC ** dbcp, unsigned int flags);
242 * Close a database cursor.
243 * @param dbi index database handle
244 * @param dbcursor database cursor
245 * @param flags (unused)
246 * @return 0 on success
249 int dbiCclose(dbiIndex dbi, DBC * dbcursor, unsigned int flags);
252 * Delete (key,data) pair(s) from index database.
253 * @param dbi index database handle
254 * @param dbcursor database cursor (NULL will use db->del)
255 * @param key delete key value/length/flags
256 * @param data delete data value/length/flags
257 * @param flags (unused)
258 * @return 0 on success
261 int dbiDel(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
265 * Retrieve (key,data) pair from index database.
266 * @param dbi index database handle
267 * @param dbcursor database cursor (NULL will use db->get)
268 * @param key retrieve key value/length/flags
269 * @param data retrieve data value/length/flags
270 * @param flags (unused)
271 * @return 0 on success
274 int dbiGet(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
278 * Store (key,data) pair in index database.
279 * @param dbi index database handle
280 * @param dbcursor database cursor (NULL will use db->put)
281 * @param key store key value/length/flags
282 * @param data store data value/length/flags
283 * @param flags (unused)
284 * @return 0 on success
287 int dbiPut(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
291 * Retrieve count of (possible) duplicate items.
292 * @param dbi index database handle
293 * @param dbcursor database cursor
294 * @param countp address of count
295 * @param flags (unused)
296 * @return 0 on success
298 int dbiCount(dbiIndex dbi, DBC * dbcursor, unsigned int * countp,
302 * Close index database.
303 * @param dbi index database handle
304 * @param flags (unused)
305 * @return 0 on success
307 int dbiClose(dbiIndex dbi, unsigned int flags);
310 * Flush pending operations to disk.
311 * @param dbi index database handle
312 * @param flags (unused)
313 * @return 0 on success
315 int dbiSync (dbiIndex dbi, unsigned int flags);
318 * Verify (and close) index database.
319 * @param dbi index database handle
320 * @param flags (unused)
321 * @return 0 on success
324 int dbiVerify(dbiIndex dbi, unsigned int flags)
326 dbi->dbi_verify_on_close = 1;
327 return dbiClose(dbi, flags);
332 * Is database byte swapped?
333 * @param dbi index database handle
334 * @return 0 same order, 1 swapped order
336 int dbiByteSwapped(dbiIndex dbi);
339 * Is database byte swapped?
340 * @param dbi index database handle
341 * @param flags DB_FAST_STAT or 0
342 * @return 0 on success
344 int dbiStat(dbiIndex dbi, unsigned int flags);
347 * Destroy set of index database items.
348 * @param set set of index database items
349 * @return NULL always
352 dbiIndexSet dbiFreeIndexSet(dbiIndexSet set);
355 * Count items in index database set.
356 * @param set set of index database items
357 * @return number of items
360 unsigned int dbiIndexSetCount(dbiIndexSet set);
363 * Return record offset of header from element in index database set.
364 * @param set set of index database items
365 * @param recno index of item in set
366 * @return record offset of header
369 unsigned int dbiIndexRecordOffset(dbiIndexSet set, int recno);
372 * Return file index from element in index database set.
373 * @param set set of index database items
374 * @param recno index of item in set
378 unsigned int dbiIndexRecordFileNumber(dbiIndexSet set, int recno);
381 * Return rpmdb home directory (depending on chroot state)
382 * param db rpmdb handle
383 * return db home directory (or NULL on error)
386 const char *rpmdbHome(rpmdb db);
389 * Return database iterator.
390 * @param mi rpm database iterator
391 * @param keyp key data (NULL for sequential access)
392 * @param keylen key data length (0 will use strlen(keyp))
393 * @return 0 on success
395 int rpmdbExtendIterator(rpmdbMatchIterator mi,
396 const void * keyp, size_t keylen);
399 * sort the iterator by (recnum, filenum)
400 * Return database iterator.
401 * @param mi rpm database iterator
403 void rpmdbSortIterator(rpmdbMatchIterator mi);
407 * * Mergesort, same arguments as qsort(2).
410 int mergesort(void *base, size_t nmemb, size_t size,
411 int (*cmp) (const void *, const void *));
413 /* mergesort is defined in stdlib.h on Mac OS X */
414 #endif /* __APPLE__ */