2 This file is part of PulseAudio.
4 Copyright 2009 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 /* Some versions of tdb lack inclusion of signal.h in the header files but use sigatomic_t */
34 #include <pulse/xmalloc.h>
35 #include <pulsecore/core-util.h>
36 #include <pulsecore/log.h>
40 #define MAKE_TDB_CONTEXT(x) ((struct tdb_context*) (x))
42 static inline TDB_DATA* datum_to_tdb(TDB_DATA *to, const pa_datum *from) {
46 to->dptr = from->data;
47 to->dsize = from->size;
52 static inline pa_datum* datum_from_tdb(pa_datum *to, const TDB_DATA *from) {
56 to->data = from->dptr;
57 to->size = from->dsize;
62 void pa_datum_free(pa_datum *d) {
65 free(d->data); /* tdb uses raw malloc/free hence we should do that here, too */
69 pa_database* pa_database_open(const char *fn, pa_bool_t for_write) {
70 struct tdb_context *c;
75 path = pa_sprintf_malloc("%s.tdb", fn);
77 c = tdb_open(path, 0, TDB_NOSYNC|TDB_NOLOCK,
78 (for_write ? O_RDWR|O_CREAT : O_RDONLY)|O_NOCTTY
85 pa_log_debug("Opened TDB database '%s'", path);
95 return (pa_database*) c;
98 void pa_database_close(pa_database *db) {
101 tdb_close(MAKE_TDB_CONTEXT(db));
104 pa_datum* pa_database_get(pa_database *db, const pa_datum *key, pa_datum* data) {
105 TDB_DATA tdb_key, tdb_data;
111 tdb_data = tdb_fetch(MAKE_TDB_CONTEXT(db), *datum_to_tdb(&tdb_key, key));
113 return tdb_data.dptr ?
114 datum_from_tdb(data, &tdb_data) :
118 int pa_database_set(pa_database *db, const pa_datum *key, const pa_datum* data, pa_bool_t overwrite) {
119 TDB_DATA tdb_key, tdb_data;
125 return tdb_store(MAKE_TDB_CONTEXT(db),
126 *datum_to_tdb(&tdb_key, key),
127 *datum_to_tdb(&tdb_data, data),
128 overwrite ? TDB_REPLACE : TDB_INSERT) != 0 ? -1 : 0;
131 int pa_database_unset(pa_database *db, const pa_datum *key) {
137 return tdb_delete(MAKE_TDB_CONTEXT(db), *datum_to_tdb(&tdb_key, key)) != 0 ? -1 : 0;
140 int pa_database_clear(pa_database *db) {
143 return tdb_wipe_all(MAKE_TDB_CONTEXT(db)) != 0 ? -1 : 0;
146 signed pa_database_size(pa_database *db) {
154 tdb_key = tdb_firstkey(MAKE_TDB_CONTEXT(db));
156 while (tdb_key.dptr) {
161 next = tdb_nextkey(MAKE_TDB_CONTEXT(db), tdb_key);
169 pa_datum* pa_database_first(pa_database *db, pa_datum *key, pa_datum *data) {
170 TDB_DATA tdb_key, tdb_data;
175 tdb_key = tdb_firstkey(MAKE_TDB_CONTEXT(db));
181 tdb_data = tdb_fetch(MAKE_TDB_CONTEXT(db), tdb_key);
183 if (!tdb_data.dptr) {
188 datum_from_tdb(data, &tdb_data);
191 datum_from_tdb(key, &tdb_key);
196 pa_datum* pa_database_next(pa_database *db, const pa_datum *key, pa_datum *next, pa_datum *data) {
197 TDB_DATA tdb_key, tdb_data;
202 tdb_key = tdb_nextkey(MAKE_TDB_CONTEXT(db), *datum_to_tdb(&tdb_key, key));
208 tdb_data = tdb_fetch(MAKE_TDB_CONTEXT(db), tdb_key);
210 if (!tdb_data.dptr) {
215 datum_from_tdb(data, &tdb_data);
218 datum_from_tdb(next, &tdb_key);
223 int pa_database_sync(pa_database *db) {