4 /** \ingroup rpmdb dbi db1 db3
6 * Access RPM indices using Berkeley DB interface(s).
13 typedef /*@abstract@*/ struct _dbiIndexItem * dbiIndexItem;
14 typedef /*@abstract@*/ struct _dbiIndex * dbiIndex;
16 /* this will break if sizeof(int) != 4 */
18 * A single item from an index database (i.e. the "data returned").
19 * Note: In rpm-3.0.4 and earlier, this structure was passed by value,
20 * and was identical to the "data saved" structure below.
22 struct _dbiIndexItem {
23 unsigned int hdrNum; /*!< header instance in db */
24 unsigned int tagNum; /*!< tag index in header */
25 unsigned int fpNum; /*!< finger print index */
26 unsigned int dbNum; /*!< database index */
30 * A single item in an index database (i.e. the "data saved").
33 unsigned int recOffset; /*!< byte offset of header in db */
34 unsigned int fileNumber; /*!< file array index */
36 typedef struct _dbiIR * DBIR_t;
39 * Items retrieved from the index database.
42 /*@owned@*/ struct _dbiIndexItem * recs; /*!< array of records */
43 int count; /*!< number of records */
46 /* XXX hack to get prototypes correct */
47 #if !defined(DB_VERSION_MAJOR)
55 * Private methods for accessing an index database.
58 int dbv_major; /*!< Berkeley db version major */
59 int dbv_minor; /*!< Berkeley db version minor */
60 int dbv_patch; /*!< Berkeley db version patch */
63 * Return handle for an index database.
64 * @param rpmdb rpm database
65 * @param rpmtag rpm tag
66 * @return 0 on success
68 int (*open) (rpmdb rpmdb, int rpmtag, /*@out@*/ dbiIndex * dbip);
71 * Close index database.
72 * @param dbi index database handle
73 * @param flags (unused)
74 * @return 0 on success
76 int (*close) (/*@only@*/ dbiIndex dbi, unsigned int flags);
79 * Flush pending operations to disk.
80 * @param dbi index database handle
81 * @param flags (unused)
82 * @return 0 on success
84 int (*sync) (dbiIndex dbi, unsigned int flags);
87 * Open database cursor.
88 * @param dbi index database handle
89 * @param dbcp address of database cursor
90 * @param flags (unused)
92 int (*copen) (dbiIndex dbi, /*@out@*/ DBC ** dbcp, unsigned int flags);
95 * Close database cursor.
96 * @param dbi index database handle
97 * @param dbcursor database cursor
98 * @param flags (unused)
100 int (*cclose) (dbiIndex dbi, /*@only@*/ DBC * dbcursor, unsigned int flags);
103 * Delete (key,data) pair(s) using db->del or dbcursor->c_del.
104 * @param dbi index database handle
105 * @param dbcursor database cursor
106 * @param keyp key data
107 * @param keylen key data length
108 * @param flags (unused)
109 * @return 0 on success
111 int (*cdel) (dbiIndex dbi, DBC * dbcursor, const void * keyp, size_t keylen, unsigned int flags);
114 * Retrieve (key,data) pair using db->get or dbcursor->c_get.
115 * @param dbi index database handle
116 * @param dbcursor database cursor
117 * @param keypp address of key data
118 * @param keylenp address of key data length
119 * @param datapp address of data pointer
120 * @param datalenp address of data length
121 * @param flags (unused)
122 * @return 0 on success
124 int (*cget) (dbiIndex dbi, DBC * dbcursor,
125 /*@out@*/ void ** keypp, /*@out@*/ size_t * keylenp,
126 /*@out@*/ void ** datapp, /*@out@*/ size_t * datalenp,
130 * Store (key,data) pair using db->put or dbcursor->c_put.
131 * @param dbi index database handle
132 * @param dbcursor database cursor
133 * @param keyp key data
134 * @param keylen key data length
135 * @param datap data pointer
136 * @param datalen data length
137 * @param flags (unused)
138 * @return 0 on success
140 int (*cput) (dbiIndex dbi, DBC * dbcursor,
141 const void * keyp, size_t keylen,
142 const void * datap, size_t datalen,
146 * Is database byte swapped?
147 * @param dbi index database handle
150 int (*byteswapped) (dbiIndex dbi);
155 * Describes an index database (implemented on Berkeley db[123] API).
158 /*@null@*/ const char * dbi_root;
159 /*@null@*/ const char * dbi_home;
160 /*@null@*/ const char * dbi_file;
161 /*@null@*/ const char * dbi_subfile;
163 int dbi_ecflags; /*!< db_env_create flags */
164 int dbi_cflags; /*!< db_create flags */
165 int dbi_oeflags; /*!< common (db,dbenv}->open flags */
166 int dbi_eflags; /*!< dbenv->open flags */
167 int dbi_oflags; /*!< db->open flags */
168 int dbi_tflags; /*!< dbenv->txn_begin flags */
170 int dbi_type; /*!< db index type */
171 unsigned dbi_mode; /*!< mode to use on open */
172 int dbi_perms; /*!< file permission to use on open */
173 long dbi_shmkey; /*!< shared memory base key */
174 int dbi_api; /*!< Berkeley API type */
176 int dbi_tear_down; /*!< tear down dbenv on close */
177 int dbi_use_cursors;/*!< access with cursors? (always) */
178 int dbi_use_dbenv; /*!< use db environment? */
179 int dbi_get_rmw_cursor;
180 int dbi_no_fsync; /*!< no-op fsync for db */
181 int dbi_no_dbsync; /*!< don't call dbiSync */
182 int dbi_lockdbfd; /*!< do fcntl lock on db fd */
183 int dbi_temporary; /*!< non-persistent */
186 /*@null@*/ char * dbi_host;
190 /* dbenv parameters */
192 /*@null@*/ void (*db_errcall) (const char *db_errpfx, char *buffer);
193 /*@shared@*/ FILE * dbi_errfile;
194 const char * dbi_errpfx;
198 /* mpool sub-system parameters */
199 int dbi_mp_mmapsize; /*!< (10Mb) */
200 int dbi_mp_size; /*!< (128Kb) */
201 /* lock sub-system parameters */
202 unsigned int dbi_lk_max;
203 unsigned int dbi_lk_detect;
205 unsigned char *dbi_lk_conflicts;
206 /* log sub-system parameters */
207 unsigned int dbi_lg_max;
208 unsigned int dbi_lg_bsize;
209 /* transaction sub-system parameters */
210 unsigned int dbi_tx_max;
212 int (*dbi_tx_recover) (DB_ENV *dbenv, DBT *log_rec, DB_LSN *lsnp, int redo, void *info);
214 /* dbinfo parameters */
215 int dbi_cachesize; /*!< */
216 int dbi_pagesize; /*!< (fs blksize) */
217 /*@null@*/ void * (*dbi_malloc) (size_t nbytes);
218 /* hash access parameters */
219 unsigned int dbi_h_ffactor; /*!< */
220 /*@null@*/ unsigned int (*dbi_h_hash_fcn) (const void *bytes, unsigned int length);
221 unsigned int dbi_h_nelem; /*!< */
222 unsigned int dbi_h_flags; /*!< DB_DUP, DB_DUPSORT */
223 /*@null@*/ int (*dbi_h_dup_compare_fcn) (const DBT *, const DBT *);
224 /* btree access parameters */
227 /*@null@*/ int (*dbi_bt_compare_fcn) (const DBT *, const DBT *);
228 /*@null@*/ int (*dbi_bt_dup_compare_fcn) (const DBT *, const DBT *);
229 /*@null@*/ size_t (*dbi_bt_prefix_fcn) (const DBT *, const DBT *);
230 /* recno access parameters */
233 unsigned int dbi_re_len;
235 const char * dbi_re_source;
236 /* queue access parameters */
237 unsigned int dbi_q_extentsize;
239 /*@kept@*/ rpmdb dbi_rpmdb;
240 int dbi_rpmtag; /*!< rpm tag used for index */
241 int dbi_jlen; /*!< size of join key */
243 unsigned int dbi_lastoffset; /*!< db1 with falloc.c needs this */
245 /*@only@*//*@null@*/ void * dbi_db; /*!< dbi handle */
246 /*@only@*//*@null@*/ void * dbi_dbenv;
247 /*@only@*//*@null@*/ void * dbi_dbinfo;
248 /*@only@*//*@null@*/ void * dbi_rmw; /*!< db cursor (with DB_WRITECURSOR) */
250 /*@observer@*/ const struct _dbiVec * dbi_vec; /*!< private methods */
255 * Describes the collection of index databases used by rpm.
258 /*@owned@*/ const char *db_root; /*!< path prefix */
259 /*@owned@*/ const char *db_home; /*!< directory path */
261 int db_mode; /*!< open mode */
262 int db_perms; /*!< open permissions */
263 int db_api; /*!< Berkeley API type */
266 /*@owned@*/ const char *db_errpfx;
267 void (*db_errcall) (const char *db_errpfx, char *buffer);
268 /*@shared@*/ FILE * db_errfile;
269 /*@only@*/ void * (*db_malloc) (size_t nbytes);
270 /*@only@*/ void * (*db_realloc) (/*@only@*//*@null@*/ void * ptr,
272 void (*db_free) (/*@only@*/ void * ptr);
277 /* for RPM's internal use only */
282 RPMDB_FLAG_JUSTCHECK = (1 << 0),
283 RPMDB_FLAG_MINIMAL = (1 << 1),
284 RPMDB_FLAG_CHROOT = (1 << 2)
293 * Return new configured index database handle instance.
294 * @param rpmdb rpm database
296 /*@only@*/ /*@null@*/ dbiIndex db3New(/*@keep@*/ rpmdb rpmdb, int rpmtag);
299 * Destroy index database handle instance.
300 * @param dbi index database handle
302 void db3Free( /*@only@*/ /*@null@*/ dbiIndex dbi);
305 * Format db3 open flags for debugging print.
306 * @param dbflags db open flags
307 * @param print_dbenv_flags format db env flags instead?
308 * @return formatted flags (static buffer)
310 /*@exposed@*/ extern const char *const prDbiOpenFlags(int dbflags,
311 int print_dbenv_flags);
314 * Return handle for an index database.
315 * @param rpmdb rpm database
316 * @param rpmtag rpm tag
317 * @param flags (unused)
318 * @return index database handle
320 /*@only@*/ /*@null@*/ dbiIndex dbiOpen(/*@null@*/ rpmdb rpmdb, int rpmtag,
324 * @param dbi index database handle
325 * @param dbiflags DBI_WRITECURSOR or DBI_ITERATOR
327 int dbiCopen(dbiIndex dbi, /*@out@*/ DBC ** dbcp, unsigned int dbiflags);
328 int XdbiCopen(dbiIndex dbi, /*@out@*/ DBC ** dbcp, unsigned int dbiflags, const char *f, unsigned int l);
329 #define dbiCopen(_a,_b,_c) \
330 XdbiCopen(_a, _b, _c, __FILE__, __LINE__)
332 #define DBI_WRITECURSOR (1 << 0)
333 #define DBI_ITERATOR (1 << 1)
336 * @param dbi index database handle
337 * @param flags (unused)
339 int dbiCclose(dbiIndex dbi, /*@only@*/ DBC * dbcursor, unsigned int flags);
340 int XdbiCclose(dbiIndex dbi, /*@only@*/ DBC * dbcursor, unsigned int flags, const char *f, unsigned int l);
341 #define dbiCclose(_a,_b,_c) \
342 XdbiCclose(_a, _b, _c, __FILE__, __LINE__)
345 * Delete (key,data) pair(s) from index database.
346 * @param dbi index database handle
347 * @param keyp key data
348 * @param keylen key data length
349 * @param flags (unused)
350 * @return 0 on success
352 int dbiDel(dbiIndex dbi, DBC * dbcursor, const void * keyp, size_t keylen,
356 * Retrieve (key,data) pair from index database.
357 * @param dbi index database handle
358 * @param keypp address of key data
359 * @param keylenp address of key data length
360 * @param datapp address of data pointer
361 * @param datalenp address of data length
362 * @param flags (unused)
363 * @return 0 on success
365 int dbiGet(dbiIndex dbi, DBC * dbcursor, void ** keypp,
366 /*@null@*/ size_t * keylenp,
367 /*@null@*/ void ** datapp,
368 /*@null@*/ size_t * datalenp,
372 * Store (key,data) pair in index database.
373 * @param dbi index database handle
374 * @param keyp key data
375 * @param keylen key data length
376 * @param datap data pointer
377 * @param datalen data length
378 * @param flags (unused)
379 * @return 0 on success
381 int dbiPut(dbiIndex dbi, DBC * dbcursor, const void * keyp, size_t keylen,
382 const void * datap, size_t datalen, unsigned int flags);
385 * Close index database.
386 * @param dbi index database handle
387 * @param flags (unused)
388 * @return 0 on success
390 int dbiClose(/*@only@*/ dbiIndex dbi, unsigned int flags);
393 * Flush pending operations to disk.
394 * @param dbi index database handle
395 * @param flags (unused)
396 * @return 0 on success
398 int dbiSync (dbiIndex dbi, unsigned int flags);
401 * Is database byte swapped?
402 * @param dbi index database handle
405 int dbiByteSwapped(dbiIndex dbi);
408 * Return base file name for db1 database (legacy).
409 * @param rpmtag rpm tag
410 * @return base file name of db1 database
412 char * db1basename(int rpmtag);
417 unsigned int rpmdbGetIteratorFileNum(rpmdbMatchIterator mi);
420 * @param rpmdb rpm database
422 int rpmdbFindFpList(/*@null@*/ rpmdb rpmdb, fingerPrint * fpList,
423 /*@out@*/dbiIndexSet * matchList, int numItems);
426 * Destroy set of index database items.
427 * @param set set of index database items
429 void dbiFreeIndexSet(/*@only@*/ /*@null@*/ dbiIndexSet set);
432 * Count items in index database set.
433 * @param set set of index database items
434 * @return number of items
436 unsigned int dbiIndexSetCount(dbiIndexSet set);
439 * Return record offset of header from element in index database set.
440 * @param set set of index database items
441 * @param recno index of item in set
442 * @return record offset of header
444 unsigned int dbiIndexRecordOffset(dbiIndexSet set, int recno);
447 * Return file index from element in index database set.
448 * @param set set of index database items
449 * @param recno index of item in set
452 unsigned int dbiIndexRecordFileNumber(dbiIndexSet set, int recno);