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 int dbi_ecflags; /*!< db_env_create flags */
51 int dbi_cflags; /*!< db_create flags */
52 int dbi_oeflags; /*!< common (db,dbenv}->open flags */
53 int dbi_eflags; /*!< dbenv->open flags */
54 int dbi_oflags; /*!< db->open flags */
55 int dbi_tflags; /*!< dbenv->txn_begin flags */
57 int dbi_type; /*!< db index type */
58 unsigned dbi_mode; /*!< mode to use on open */
59 int dbi_perms; /*!< file permission to use on open */
61 int dbi_verify_on_close;
62 int dbi_use_dbenv; /*!< use db environment? */
63 int dbi_permit_dups; /*!< permit duplicate entries? */
64 int dbi_no_fsync; /*!< no-op fsync for db */
65 int dbi_no_dbsync; /*!< don't call dbiSync */
66 int dbi_lockdbfd; /*!< do fcntl lock on db fd */
69 /* dbenv parameters */
71 /* XXX db-4.3.14 adds dbenv as 1st arg. */
73 /* mpool sub-system parameters */
74 int dbi_mmapsize; /*!< (10Mb) */
75 int dbi_cachesize; /*!< (128Kb) */
76 /* dbinfo parameters */
77 int dbi_pagesize; /*!< (fs blksize) */
78 /* hash access parameters */
79 unsigned int dbi_h_ffactor; /*!< */
80 unsigned int (*dbi_h_hash_fcn) (DB *, const void *bytes,
82 unsigned int dbi_h_nelem; /*!< */
83 unsigned int dbi_h_flags; /*!< DB_DUP, DB_DUPSORT */
84 int (*dbi_h_dup_compare_fcn) (DB *, const DBT *, const DBT *);
85 /* btree access parameters */
88 int (*dbi_bt_compare_fcn) (DB *, const DBT *, const DBT *);
89 int (*dbi_bt_dup_compare_fcn) (DB *, const DBT *, const DBT *);
90 size_t (*dbi_bt_prefix_fcn) (DB *, const DBT *, const DBT *);
91 /* recno access parameters */
94 unsigned int dbi_re_len;
97 /* queue access parameters */
98 unsigned int dbi_q_extentsize;
100 rpmdb dbi_rpmdb; /*!< the parent rpm database */
101 rpmTag dbi_rpmtag; /*!< rpm tag used for index */
102 int dbi_jlen; /*!< size of join key */
104 DB * dbi_db; /*!< Berkeley DB * handle */
105 DB_TXN * dbi_txnid; /*!< Bekerley DB_TXN * transaction id */
106 void * dbi_stats; /*!< Berkeley db statistics */
110 * Describes the collection of index databases used by rpm.
113 char * db_root;/*!< path prefix */
114 char * db_home;/*!< directory path */
115 char * db_fullpath; /*!< full db path including prefix */
117 int db_mode; /*!< open mode */
118 int db_perms; /*!< open permissions */
119 int db_api; /*!< Berkeley API type */
122 int db_chrootDone; /*!< If chroot(2) done, ignore db_root. */
123 int db_mkdirDone; /*!< Has db_home been created? */
124 unsigned char * db_bits; /*!< package instance bit mask. */
125 int db_nbits; /*!< no. of bits in mask. */
128 void * db_dbenv; /*!< Berkeley DB_ENV handle. */
129 int db_ndbi; /*!< No. of tag indices. */
130 dbiIndex * _dbi; /*!< Tag indices. */
132 struct rpmop_s db_getops;
133 struct rpmop_s db_putops;
134 struct rpmop_s db_delops;
136 int nrefs; /*!< Reference count. */
139 /* for RPM's internal use only */
144 RPMDB_FLAG_JUSTCHECK = (1 << 0),
145 RPMDB_FLAG_MINIMAL = (1 << 1),
146 RPMDB_FLAG_CHROOT = (1 << 2)
154 * Return new configured index database handle instance.
155 * @param rpmdb rpm database
156 * @param rpmtag rpm tag
157 * @return index database handle
160 dbiIndex dbiNew(rpmdb rpmdb, rpmTag rpmtag);
163 * Destroy index database handle instance.
164 * @param dbi index database handle
165 * @return NULL always
168 dbiIndex dbiFree( dbiIndex dbi);
171 * Format dbi open flags for debugging print.
172 * @param dbflags db open flags
173 * @param print_dbenv_flags format db env flags instead?
174 * @return formatted flags (malloced)
177 char * prDbiOpenFlags(int dbflags, int print_dbenv_flags);
180 * Return handle for an index database.
181 * @param db rpm database
182 * @param rpmtag rpm tag
183 * @param flags (unused)
184 * @return index database handle
187 dbiIndex dbiOpen(rpmdb db, rpmTag rpmtag,
192 * Actually open the database of the index.
193 * @param db rpm database
194 * @param rpmtag rpm tag
195 * @param dbiIndex address of index database handle
196 * @return 0 on success
199 int dbiOpenDB(rpmdb rpmdb, rpmTag rpmtag, dbiIndex * dbip);
202 /* FIX: vector annotations */
204 * Open a database cursor.
205 * @param dbi index database handle
206 * @param txnid database transaction handle
207 * @retval dbcp returned database cursor
208 * @param flags DB_WRITECURSOR if writing, or 0
209 * @return 0 on success
212 int dbiCopen(dbiIndex dbi, DB_TXN * txnid,
213 DBC ** dbcp, unsigned int flags);
216 * Close a database cursor.
217 * @param dbi index database handle
218 * @param dbcursor database cursor
219 * @param flags (unused)
220 * @return 0 on success
223 int dbiCclose(dbiIndex dbi, DBC * dbcursor, unsigned int flags);
226 * Delete (key,data) pair(s) from index database.
227 * @param dbi index database handle
228 * @param dbcursor database cursor (NULL will use db->del)
229 * @param key delete key value/length/flags
230 * @param data delete data value/length/flags
231 * @param flags (unused)
232 * @return 0 on success
235 int dbiDel(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
239 * Retrieve (key,data) pair from index database.
240 * @param dbi index database handle
241 * @param dbcursor database cursor (NULL will use db->get)
242 * @param key retrieve key value/length/flags
243 * @param data retrieve data value/length/flags
244 * @param flags (unused)
245 * @return 0 on success
248 int dbiGet(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
252 * Store (key,data) pair in index database.
253 * @param dbi index database handle
254 * @param dbcursor database cursor (NULL will use db->put)
255 * @param key store key value/length/flags
256 * @param data store data value/length/flags
257 * @param flags (unused)
258 * @return 0 on success
261 int dbiPut(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
265 * Retrieve count of (possible) duplicate items.
266 * @param dbi index database handle
267 * @param dbcursor database cursor
268 * @param countp address of count
269 * @param flags (unused)
270 * @return 0 on success
272 int dbiCount(dbiIndex dbi, DBC * dbcursor, unsigned int * countp,
276 * Close index database.
277 * @param dbi index database handle
278 * @param flags (unused)
279 * @return 0 on success
281 int dbiClose(dbiIndex dbi, unsigned int flags);
284 * Flush pending operations to disk.
285 * @param dbi index database handle
286 * @param flags (unused)
287 * @return 0 on success
289 int dbiSync (dbiIndex dbi, unsigned int flags);
292 * Verify (and close) index database.
293 * @param dbi index database handle
294 * @param flags (unused)
295 * @return 0 on success
298 int dbiVerify(dbiIndex dbi, unsigned int flags)
300 dbi->dbi_verify_on_close = 1;
301 return dbiClose(dbi, flags);
306 * Is database byte swapped?
307 * @param dbi index database handle
308 * @return 0 same order, 1 swapped order
310 int dbiByteSwapped(dbiIndex dbi);
313 * Is database byte swapped?
314 * @param dbi index database handle
315 * @param flags DB_FAST_STAT or 0
316 * @return 0 on success
318 int dbiStat(dbiIndex dbi, unsigned int flags);
321 * Destroy set of index database items.
322 * @param set set of index database items
323 * @return NULL always
326 dbiIndexSet dbiFreeIndexSet(dbiIndexSet set);
329 * Count items in index database set.
330 * @param set set of index database items
331 * @return number of items
334 unsigned int dbiIndexSetCount(dbiIndexSet set);
337 * Return record offset of header from element in index database set.
338 * @param set set of index database items
339 * @param recno index of item in set
340 * @return record offset of header
343 unsigned int dbiIndexRecordOffset(dbiIndexSet set, int recno);
346 * Return file index from element in index database set.
347 * @param set set of index database items
348 * @param recno index of item in set
352 unsigned int dbiIndexRecordFileNumber(dbiIndexSet set, int recno);
355 * Return rpmdb home directory (depending on chroot state)
356 * param db rpmdb handle
357 * return db home directory (or NULL on error)
360 const char *rpmdbHome(rpmdb db);
363 * Return database iterator.
364 * @param mi rpm database iterator
365 * @param keyp key data (NULL for sequential access)
366 * @param keylen key data length (0 will use strlen(keyp))
367 * @return 0 on success
369 int rpmdbExtendIterator(rpmdbMatchIterator mi,
370 const void * keyp, size_t keylen);
373 * sort the iterator by (recnum, filenum)
374 * Return database iterator.
375 * @param mi rpm database iterator
377 void rpmdbSortIterator(rpmdbMatchIterator mi);
381 * * Mergesort, same arguments as qsort(2).
384 int mergesort(void *base, size_t nmemb, size_t size,
385 int (*cmp) (const void *, const void *));
387 /* mergesort is defined in stdlib.h on Mac OS X */
388 #endif /* __APPLE__ */