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 */
60 long dbi_shmkey; /*!< shared memory base key */
62 int dbi_verify_on_close;
63 int dbi_use_dbenv; /*!< use db environment? */
64 int dbi_permit_dups; /*!< permit duplicate entries? */
65 int dbi_no_fsync; /*!< no-op fsync for db */
66 int dbi_no_dbsync; /*!< don't call dbiSync */
67 int dbi_lockdbfd; /*!< do fcntl lock on db fd */
70 /* dbenv parameters */
72 /* XXX db-4.3.14 adds dbenv as 1st arg. */
74 /* mpool sub-system parameters */
75 int dbi_mmapsize; /*!< (10Mb) */
76 int dbi_cachesize; /*!< (128Kb) */
77 /* dbinfo parameters */
78 int dbi_pagesize; /*!< (fs blksize) */
79 /* hash access parameters */
80 unsigned int dbi_h_ffactor; /*!< */
81 unsigned int (*dbi_h_hash_fcn) (DB *, const void *bytes,
83 unsigned int dbi_h_nelem; /*!< */
84 unsigned int dbi_h_flags; /*!< DB_DUP, DB_DUPSORT */
85 int (*dbi_h_dup_compare_fcn) (DB *, const DBT *, const DBT *);
86 /* btree access parameters */
89 int (*dbi_bt_compare_fcn) (DB *, const DBT *, const DBT *);
90 int (*dbi_bt_dup_compare_fcn) (DB *, const DBT *, const DBT *);
91 size_t (*dbi_bt_prefix_fcn) (DB *, const DBT *, const DBT *);
92 /* recno access parameters */
95 unsigned int dbi_re_len;
98 /* queue access parameters */
99 unsigned int dbi_q_extentsize;
101 rpmdb dbi_rpmdb; /*!< the parent rpm database */
102 rpmTag dbi_rpmtag; /*!< rpm tag used for index */
103 int dbi_jlen; /*!< size of join key */
105 DB * dbi_db; /*!< Berkeley DB * handle */
106 DB_TXN * dbi_txnid; /*!< Bekerley DB_TXN * transaction id */
107 void * dbi_stats; /*!< Berkeley db statistics */
111 * Describes the collection of index databases used by rpm.
114 char * db_root;/*!< path prefix */
115 char * db_home;/*!< directory path */
116 char * db_fullpath; /*!< full db path including prefix */
118 int db_mode; /*!< open mode */
119 int db_perms; /*!< open permissions */
120 int db_api; /*!< Berkeley API type */
123 int db_chrootDone; /*!< If chroot(2) done, ignore db_root. */
124 int db_mkdirDone; /*!< Has db_home been created? */
125 unsigned char * db_bits; /*!< package instance bit mask. */
126 int db_nbits; /*!< no. of bits in mask. */
129 void * db_dbenv; /*!< Berkeley DB_ENV handle. */
130 int db_ndbi; /*!< No. of tag indices. */
131 dbiIndex * _dbi; /*!< Tag indices. */
133 struct rpmop_s db_getops;
134 struct rpmop_s db_putops;
135 struct rpmop_s db_delops;
137 int nrefs; /*!< Reference count. */
140 /* for RPM's internal use only */
145 RPMDB_FLAG_JUSTCHECK = (1 << 0),
146 RPMDB_FLAG_MINIMAL = (1 << 1),
147 RPMDB_FLAG_CHROOT = (1 << 2)
155 * Return new configured index database handle instance.
156 * @param rpmdb rpm database
157 * @param rpmtag rpm tag
158 * @return index database handle
161 dbiIndex dbiNew(rpmdb rpmdb, rpmTag rpmtag);
164 * Destroy index database handle instance.
165 * @param dbi index database handle
166 * @return NULL always
169 dbiIndex dbiFree( dbiIndex dbi);
172 * Format dbi open flags for debugging print.
173 * @param dbflags db open flags
174 * @param print_dbenv_flags format db env flags instead?
175 * @return formatted flags (malloced)
178 char * prDbiOpenFlags(int dbflags, int print_dbenv_flags);
181 * Return handle for an index database.
182 * @param db rpm database
183 * @param rpmtag rpm tag
184 * @param flags (unused)
185 * @return index database handle
188 dbiIndex dbiOpen(rpmdb db, rpmTag rpmtag,
193 * Actually open the database of the index.
194 * @param db rpm database
195 * @param rpmtag rpm tag
196 * @param dbiIndex address of index database handle
197 * @return 0 on success
200 int dbiOpenDB(rpmdb rpmdb, rpmTag rpmtag, dbiIndex * dbip);
203 /* FIX: vector annotations */
205 * Open a database cursor.
206 * @param dbi index database handle
207 * @param txnid database transaction handle
208 * @retval dbcp returned database cursor
209 * @param flags DB_WRITECURSOR if writing, or 0
210 * @return 0 on success
213 int dbiCopen(dbiIndex dbi, DB_TXN * txnid,
214 DBC ** dbcp, unsigned int flags);
217 * Close a database cursor.
218 * @param dbi index database handle
219 * @param dbcursor database cursor
220 * @param flags (unused)
221 * @return 0 on success
224 int dbiCclose(dbiIndex dbi, DBC * dbcursor, unsigned int flags);
227 * Delete (key,data) pair(s) from index database.
228 * @param dbi index database handle
229 * @param dbcursor database cursor (NULL will use db->del)
230 * @param key delete key value/length/flags
231 * @param data delete data value/length/flags
232 * @param flags (unused)
233 * @return 0 on success
236 int dbiDel(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
240 * Retrieve (key,data) pair from index database.
241 * @param dbi index database handle
242 * @param dbcursor database cursor (NULL will use db->get)
243 * @param key retrieve key value/length/flags
244 * @param data retrieve data value/length/flags
245 * @param flags (unused)
246 * @return 0 on success
249 int dbiGet(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
253 * Store (key,data) pair in index database.
254 * @param dbi index database handle
255 * @param dbcursor database cursor (NULL will use db->put)
256 * @param key store key value/length/flags
257 * @param data store data value/length/flags
258 * @param flags (unused)
259 * @return 0 on success
262 int dbiPut(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
266 * Retrieve count of (possible) duplicate items.
267 * @param dbi index database handle
268 * @param dbcursor database cursor
269 * @param countp address of count
270 * @param flags (unused)
271 * @return 0 on success
273 int dbiCount(dbiIndex dbi, DBC * dbcursor, unsigned int * countp,
277 * Close index database.
278 * @param dbi index database handle
279 * @param flags (unused)
280 * @return 0 on success
282 int dbiClose(dbiIndex dbi, unsigned int flags);
285 * Flush pending operations to disk.
286 * @param dbi index database handle
287 * @param flags (unused)
288 * @return 0 on success
290 int dbiSync (dbiIndex dbi, unsigned int flags);
293 * Verify (and close) index database.
294 * @param dbi index database handle
295 * @param flags (unused)
296 * @return 0 on success
299 int dbiVerify(dbiIndex dbi, unsigned int flags)
301 dbi->dbi_verify_on_close = 1;
302 return dbiClose(dbi, flags);
307 * Is database byte swapped?
308 * @param dbi index database handle
309 * @return 0 same order, 1 swapped order
311 int dbiByteSwapped(dbiIndex dbi);
314 * Is database byte swapped?
315 * @param dbi index database handle
316 * @param flags DB_FAST_STAT or 0
317 * @return 0 on success
319 int dbiStat(dbiIndex dbi, unsigned int flags);
322 * Destroy set of index database items.
323 * @param set set of index database items
324 * @return NULL always
327 dbiIndexSet dbiFreeIndexSet(dbiIndexSet set);
330 * Count items in index database set.
331 * @param set set of index database items
332 * @return number of items
335 unsigned int dbiIndexSetCount(dbiIndexSet set);
338 * Return record offset of header from element in index database set.
339 * @param set set of index database items
340 * @param recno index of item in set
341 * @return record offset of header
344 unsigned int dbiIndexRecordOffset(dbiIndexSet set, int recno);
347 * Return file index from element in index database set.
348 * @param set set of index database items
349 * @param recno index of item in set
353 unsigned int dbiIndexRecordFileNumber(dbiIndexSet set, int recno);
356 * Return rpmdb home directory (depending on chroot state)
357 * param db rpmdb handle
358 * return db home directory (or NULL on error)
361 const char *rpmdbHome(rpmdb db);
364 * Return database iterator.
365 * @param mi rpm database iterator
366 * @param keyp key data (NULL for sequential access)
367 * @param keylen key data length (0 will use strlen(keyp))
368 * @return 0 on success
370 int rpmdbExtendIterator(rpmdbMatchIterator mi,
371 const void * keyp, size_t keylen);
374 * sort the iterator by (recnum, filenum)
375 * Return database iterator.
376 * @param mi rpm database iterator
378 void rpmdbSortIterator(rpmdbMatchIterator mi);
382 * * Mergesort, same arguments as qsort(2).
385 int mergesort(void *base, size_t nmemb, size_t size,
386 int (*cmp) (const void *, const void *));
388 /* mergesort is defined in stdlib.h on Mac OS X */
389 #endif /* __APPLE__ */