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 */
49 char * dbi_tmpdir; /*!< temporary directory */
51 int dbi_ecflags; /*!< db_env_create flags */
52 int dbi_cflags; /*!< db_create flags */
53 int dbi_oeflags; /*!< common (db,dbenv}->open flags */
54 int dbi_eflags; /*!< dbenv->open flags */
55 int dbi_oflags; /*!< db->open flags */
56 int dbi_tflags; /*!< dbenv->txn_begin flags */
58 int dbi_type; /*!< db index type */
59 unsigned dbi_mode; /*!< mode to use on open */
60 int dbi_perms; /*!< file permission to use on open */
61 long dbi_shmkey; /*!< shared memory base key */
63 int dbi_verify_on_close;
64 int dbi_use_dbenv; /*!< use db environment? */
65 int dbi_permit_dups; /*!< permit duplicate entries? */
66 int dbi_no_fsync; /*!< no-op fsync for db */
67 int dbi_no_dbsync; /*!< don't call dbiSync */
68 int dbi_lockdbfd; /*!< do fcntl lock on db fd */
69 int dbi_temporary; /*!< non-persistent */
72 /* dbenv parameters */
74 /* XXX db-4.3.14 adds dbenv as 1st arg. */
75 void (*db_errcall) (void * dbenv, const char *db_errpfx, char *buffer);
78 /* mpool sub-system parameters */
79 int dbi_mmapsize; /*!< (10Mb) */
80 int dbi_cachesize; /*!< (128Kb) */
81 /* dbinfo parameters */
82 int dbi_pagesize; /*!< (fs blksize) */
83 /* hash access parameters */
84 unsigned int dbi_h_ffactor; /*!< */
85 unsigned int (*dbi_h_hash_fcn) (DB *, const void *bytes,
87 unsigned int dbi_h_nelem; /*!< */
88 unsigned int dbi_h_flags; /*!< DB_DUP, DB_DUPSORT */
89 int (*dbi_h_dup_compare_fcn) (DB *, const DBT *, const DBT *);
90 /* btree access parameters */
93 int (*dbi_bt_compare_fcn) (DB *, const DBT *, const DBT *);
94 int (*dbi_bt_dup_compare_fcn) (DB *, const DBT *, const DBT *);
95 size_t (*dbi_bt_prefix_fcn) (DB *, const DBT *, const DBT *);
96 /* recno access parameters */
99 unsigned int dbi_re_len;
101 char * dbi_re_source;
102 /* queue access parameters */
103 unsigned int dbi_q_extentsize;
105 rpmdb dbi_rpmdb; /*!< the parent rpm database */
106 rpmTag dbi_rpmtag; /*!< rpm tag used for index */
107 int dbi_jlen; /*!< size of join key */
109 DB * dbi_db; /*!< Berkeley DB * handle */
110 DB_TXN * dbi_txnid; /*!< Bekerley DB_TXN * transaction id */
111 void * dbi_stats; /*!< Berkeley db statistics */
115 * Describes the collection of index databases used by rpm.
118 char * db_root;/*!< path prefix */
119 char * db_home;/*!< directory path */
120 char * db_fullpath; /*!< full db path including prefix */
122 int db_mode; /*!< open mode */
123 int db_perms; /*!< open permissions */
124 int db_api; /*!< Berkeley API type */
127 int db_chrootDone; /*!< If chroot(2) done, ignore db_root. */
128 int db_mkdirDone; /*!< Has db_home been created? */
129 void (*db_errcall) (const char *db_errpfx, char *buffer);
131 unsigned char * db_bits; /*!< package instance bit mask. */
132 int db_nbits; /*!< no. of bits in mask. */
135 void * db_dbenv; /*!< Berkeley DB_ENV handle. */
136 int db_ndbi; /*!< No. of tag indices. */
137 dbiIndex * _dbi; /*!< Tag indices. */
139 struct rpmop_s db_getops;
140 struct rpmop_s db_putops;
141 struct rpmop_s db_delops;
143 int nrefs; /*!< Reference count. */
146 /* for RPM's internal use only */
151 RPMDB_FLAG_JUSTCHECK = (1 << 0),
152 RPMDB_FLAG_MINIMAL = (1 << 1),
153 RPMDB_FLAG_CHROOT = (1 << 2)
161 * Return new configured index database handle instance.
162 * @param rpmdb rpm database
163 * @param rpmtag rpm tag
164 * @return index database handle
167 dbiIndex dbiNew(rpmdb rpmdb, rpmTag rpmtag);
170 * Destroy index database handle instance.
171 * @param dbi index database handle
172 * @return NULL always
175 dbiIndex dbiFree( dbiIndex dbi);
178 * Format dbi open flags for debugging print.
179 * @param dbflags db open flags
180 * @param print_dbenv_flags format db env flags instead?
181 * @return formatted flags (malloced)
184 char * prDbiOpenFlags(int dbflags, int print_dbenv_flags);
187 * Return handle for an index database.
188 * @param db rpm database
189 * @param rpmtag rpm tag
190 * @param flags (unused)
191 * @return index database handle
194 dbiIndex dbiOpen(rpmdb db, rpmTag rpmtag,
199 * Actually open the database of the index.
200 * @param db rpm database
201 * @param rpmtag rpm tag
202 * @param dbiIndex address of index database handle
203 * @return 0 on success
206 int dbiOpenDB(rpmdb rpmdb, rpmTag rpmtag, dbiIndex * dbip);
209 /* FIX: vector annotations */
211 * Open a database cursor.
212 * @param dbi index database handle
213 * @param txnid database transaction handle
214 * @retval dbcp returned database cursor
215 * @param flags DB_WRITECURSOR if writing, or 0
216 * @return 0 on success
219 int dbiCopen(dbiIndex dbi, DB_TXN * txnid,
220 DBC ** dbcp, unsigned int flags);
223 * Close a database cursor.
224 * @param dbi index database handle
225 * @param dbcursor database cursor
226 * @param flags (unused)
227 * @return 0 on success
230 int dbiCclose(dbiIndex dbi, DBC * dbcursor, unsigned int flags);
233 * Delete (key,data) pair(s) from index database.
234 * @param dbi index database handle
235 * @param dbcursor database cursor (NULL will use db->del)
236 * @param key delete key value/length/flags
237 * @param data delete data value/length/flags
238 * @param flags (unused)
239 * @return 0 on success
242 int dbiDel(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
246 * Retrieve (key,data) pair from index database.
247 * @param dbi index database handle
248 * @param dbcursor database cursor (NULL will use db->get)
249 * @param key retrieve key value/length/flags
250 * @param data retrieve data value/length/flags
251 * @param flags (unused)
252 * @return 0 on success
255 int dbiGet(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
259 * Store (key,data) pair in index database.
260 * @param dbi index database handle
261 * @param dbcursor database cursor (NULL will use db->put)
262 * @param key store key value/length/flags
263 * @param data store data value/length/flags
264 * @param flags (unused)
265 * @return 0 on success
268 int dbiPut(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
272 * Retrieve count of (possible) duplicate items.
273 * @param dbi index database handle
274 * @param dbcursor database cursor
275 * @param countp address of count
276 * @param flags (unused)
277 * @return 0 on success
279 int dbiCount(dbiIndex dbi, DBC * dbcursor, unsigned int * countp,
283 * Close index database.
284 * @param dbi index database handle
285 * @param flags (unused)
286 * @return 0 on success
288 int dbiClose(dbiIndex dbi, unsigned int flags);
291 * Flush pending operations to disk.
292 * @param dbi index database handle
293 * @param flags (unused)
294 * @return 0 on success
296 int dbiSync (dbiIndex dbi, unsigned int flags);
299 * Verify (and close) index database.
300 * @param dbi index database handle
301 * @param flags (unused)
302 * @return 0 on success
305 int dbiVerify(dbiIndex dbi, unsigned int flags)
307 dbi->dbi_verify_on_close = 1;
308 return dbiClose(dbi, flags);
313 * Is database byte swapped?
314 * @param dbi index database handle
315 * @return 0 same order, 1 swapped order
317 int dbiByteSwapped(dbiIndex dbi);
320 * Is database byte swapped?
321 * @param dbi index database handle
322 * @param flags DB_FAST_STAT or 0
323 * @return 0 on success
325 int dbiStat(dbiIndex dbi, unsigned int flags);
328 * Destroy set of index database items.
329 * @param set set of index database items
330 * @return NULL always
333 dbiIndexSet dbiFreeIndexSet(dbiIndexSet set);
336 * Count items in index database set.
337 * @param set set of index database items
338 * @return number of items
341 unsigned int dbiIndexSetCount(dbiIndexSet set);
344 * Return record offset of header from element in index database set.
345 * @param set set of index database items
346 * @param recno index of item in set
347 * @return record offset of header
350 unsigned int dbiIndexRecordOffset(dbiIndexSet set, int recno);
353 * Return file index from element in index database set.
354 * @param set set of index database items
355 * @param recno index of item in set
359 unsigned int dbiIndexRecordFileNumber(dbiIndexSet set, int recno);
362 * Return rpmdb home directory (depending on chroot state)
363 * param db rpmdb handle
364 * return db home directory (or NULL on error)
367 const char *rpmdbHome(rpmdb db);
370 * Return database iterator.
371 * @param mi rpm database iterator
372 * @param keyp key data (NULL for sequential access)
373 * @param keylen key data length (0 will use strlen(keyp))
374 * @return 0 on success
376 int rpmdbExtendIterator(rpmdbMatchIterator mi,
377 const void * keyp, size_t keylen);
380 * sort the iterator by (recnum, filenum)
381 * Return database iterator.
382 * @param mi rpm database iterator
384 void rpmdbSortIterator(rpmdbMatchIterator mi);
388 * * Mergesort, same arguments as qsort(2).
391 int mergesort(void *base, size_t nmemb, size_t size,
392 int (*cmp) (const void *, const void *));
394 /* mergesort is defined in stdlib.h on Mac OS X */
395 #endif /* __APPLE__ */