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. */
76 /* mpool sub-system parameters */
77 int dbi_mmapsize; /*!< (10Mb) */
78 int dbi_cachesize; /*!< (128Kb) */
79 /* dbinfo parameters */
80 int dbi_pagesize; /*!< (fs blksize) */
81 /* hash access parameters */
82 unsigned int dbi_h_ffactor; /*!< */
83 unsigned int (*dbi_h_hash_fcn) (DB *, const void *bytes,
85 unsigned int dbi_h_nelem; /*!< */
86 unsigned int dbi_h_flags; /*!< DB_DUP, DB_DUPSORT */
87 int (*dbi_h_dup_compare_fcn) (DB *, const DBT *, const DBT *);
88 /* btree access parameters */
91 int (*dbi_bt_compare_fcn) (DB *, const DBT *, const DBT *);
92 int (*dbi_bt_dup_compare_fcn) (DB *, const DBT *, const DBT *);
93 size_t (*dbi_bt_prefix_fcn) (DB *, const DBT *, const DBT *);
94 /* recno access parameters */
97 unsigned int dbi_re_len;
100 /* queue access parameters */
101 unsigned int dbi_q_extentsize;
103 rpmdb dbi_rpmdb; /*!< the parent rpm database */
104 rpmTag dbi_rpmtag; /*!< rpm tag used for index */
105 int dbi_jlen; /*!< size of join key */
107 DB * dbi_db; /*!< Berkeley DB * handle */
108 DB_TXN * dbi_txnid; /*!< Bekerley DB_TXN * transaction id */
109 void * dbi_stats; /*!< Berkeley db statistics */
113 * Describes the collection of index databases used by rpm.
116 char * db_root;/*!< path prefix */
117 char * db_home;/*!< directory path */
118 char * db_fullpath; /*!< full db path including prefix */
120 int db_mode; /*!< open mode */
121 int db_perms; /*!< open permissions */
122 int db_api; /*!< Berkeley API type */
125 int db_chrootDone; /*!< If chroot(2) done, ignore db_root. */
126 int db_mkdirDone; /*!< Has db_home been created? */
127 unsigned char * db_bits; /*!< package instance bit mask. */
128 int db_nbits; /*!< no. of bits in mask. */
131 void * db_dbenv; /*!< Berkeley DB_ENV handle. */
132 int db_ndbi; /*!< No. of tag indices. */
133 dbiIndex * _dbi; /*!< Tag indices. */
135 struct rpmop_s db_getops;
136 struct rpmop_s db_putops;
137 struct rpmop_s db_delops;
139 int nrefs; /*!< Reference count. */
142 /* for RPM's internal use only */
147 RPMDB_FLAG_JUSTCHECK = (1 << 0),
148 RPMDB_FLAG_MINIMAL = (1 << 1),
149 RPMDB_FLAG_CHROOT = (1 << 2)
157 * Return new configured index database handle instance.
158 * @param rpmdb rpm database
159 * @param rpmtag rpm tag
160 * @return index database handle
163 dbiIndex dbiNew(rpmdb rpmdb, rpmTag rpmtag);
166 * Destroy index database handle instance.
167 * @param dbi index database handle
168 * @return NULL always
171 dbiIndex dbiFree( dbiIndex dbi);
174 * Format dbi open flags for debugging print.
175 * @param dbflags db open flags
176 * @param print_dbenv_flags format db env flags instead?
177 * @return formatted flags (malloced)
180 char * prDbiOpenFlags(int dbflags, int print_dbenv_flags);
183 * Return handle for an index database.
184 * @param db rpm database
185 * @param rpmtag rpm tag
186 * @param flags (unused)
187 * @return index database handle
190 dbiIndex dbiOpen(rpmdb db, rpmTag rpmtag,
195 * Actually open the database of the index.
196 * @param db rpm database
197 * @param rpmtag rpm tag
198 * @param dbiIndex address of index database handle
199 * @return 0 on success
202 int dbiOpenDB(rpmdb rpmdb, rpmTag rpmtag, dbiIndex * dbip);
205 /* FIX: vector annotations */
207 * Open a database cursor.
208 * @param dbi index database handle
209 * @param txnid database transaction handle
210 * @retval dbcp returned database cursor
211 * @param flags DB_WRITECURSOR if writing, or 0
212 * @return 0 on success
215 int dbiCopen(dbiIndex dbi, DB_TXN * txnid,
216 DBC ** dbcp, unsigned int flags);
219 * Close a database cursor.
220 * @param dbi index database handle
221 * @param dbcursor database cursor
222 * @param flags (unused)
223 * @return 0 on success
226 int dbiCclose(dbiIndex dbi, DBC * dbcursor, unsigned int flags);
229 * Delete (key,data) pair(s) from index database.
230 * @param dbi index database handle
231 * @param dbcursor database cursor (NULL will use db->del)
232 * @param key delete key value/length/flags
233 * @param data delete data value/length/flags
234 * @param flags (unused)
235 * @return 0 on success
238 int dbiDel(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
242 * Retrieve (key,data) pair from index database.
243 * @param dbi index database handle
244 * @param dbcursor database cursor (NULL will use db->get)
245 * @param key retrieve key value/length/flags
246 * @param data retrieve data value/length/flags
247 * @param flags (unused)
248 * @return 0 on success
251 int dbiGet(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
255 * Store (key,data) pair in index database.
256 * @param dbi index database handle
257 * @param dbcursor database cursor (NULL will use db->put)
258 * @param key store key value/length/flags
259 * @param data store data value/length/flags
260 * @param flags (unused)
261 * @return 0 on success
264 int dbiPut(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
268 * Retrieve count of (possible) duplicate items.
269 * @param dbi index database handle
270 * @param dbcursor database cursor
271 * @param countp address of count
272 * @param flags (unused)
273 * @return 0 on success
275 int dbiCount(dbiIndex dbi, DBC * dbcursor, unsigned int * countp,
279 * Close index database.
280 * @param dbi index database handle
281 * @param flags (unused)
282 * @return 0 on success
284 int dbiClose(dbiIndex dbi, unsigned int flags);
287 * Flush pending operations to disk.
288 * @param dbi index database handle
289 * @param flags (unused)
290 * @return 0 on success
292 int dbiSync (dbiIndex dbi, unsigned int flags);
295 * Verify (and close) index database.
296 * @param dbi index database handle
297 * @param flags (unused)
298 * @return 0 on success
301 int dbiVerify(dbiIndex dbi, unsigned int flags)
303 dbi->dbi_verify_on_close = 1;
304 return dbiClose(dbi, flags);
309 * Is database byte swapped?
310 * @param dbi index database handle
311 * @return 0 same order, 1 swapped order
313 int dbiByteSwapped(dbiIndex dbi);
316 * Is database byte swapped?
317 * @param dbi index database handle
318 * @param flags DB_FAST_STAT or 0
319 * @return 0 on success
321 int dbiStat(dbiIndex dbi, unsigned int flags);
324 * Destroy set of index database items.
325 * @param set set of index database items
326 * @return NULL always
329 dbiIndexSet dbiFreeIndexSet(dbiIndexSet set);
332 * Count items in index database set.
333 * @param set set of index database items
334 * @return number of items
337 unsigned int dbiIndexSetCount(dbiIndexSet set);
340 * Return record offset of header from element in index database set.
341 * @param set set of index database items
342 * @param recno index of item in set
343 * @return record offset of header
346 unsigned int dbiIndexRecordOffset(dbiIndexSet set, int recno);
349 * Return file index from element in index database set.
350 * @param set set of index database items
351 * @param recno index of item in set
355 unsigned int dbiIndexRecordFileNumber(dbiIndexSet set, int recno);
358 * Return rpmdb home directory (depending on chroot state)
359 * param db rpmdb handle
360 * return db home directory (or NULL on error)
363 const char *rpmdbHome(rpmdb db);
366 * Return database iterator.
367 * @param mi rpm database iterator
368 * @param keyp key data (NULL for sequential access)
369 * @param keylen key data length (0 will use strlen(keyp))
370 * @return 0 on success
372 int rpmdbExtendIterator(rpmdbMatchIterator mi,
373 const void * keyp, size_t keylen);
376 * sort the iterator by (recnum, filenum)
377 * Return database iterator.
378 * @param mi rpm database iterator
380 void rpmdbSortIterator(rpmdbMatchIterator mi);
384 * * Mergesort, same arguments as qsort(2).
387 int mergesort(void *base, size_t nmemb, size_t size,
388 int (*cmp) (const void *, const void *));
390 /* mergesort is defined in stdlib.h on Mac OS X */
391 #endif /* __APPLE__ */