License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "private.h"
-#include <ccan/hash/hash.h>
#include <assert.h>
-/* all lock info, to detect double-opens (fcntl file don't nest!) */
-static struct tdb_file *files = NULL;
+/* all tdbs, to detect double-opens (fcntl file don't nest!) */
+static struct tdb_context *tdbs = NULL;
static struct tdb_file *find_file(dev_t device, ino_t ino)
{
- struct tdb_file *i;
+ struct tdb_context *i;
- for (i = files; i; i = i->next) {
- if (i->device == device && i->inode == ino) {
- i->refcnt++;
- break;
+ for (i = tdbs; i; i = i->next) {
+ if (i->file->device == device && i->file->inode == ino) {
+ i->file->refcnt++;
+ return i->file;
}
}
- return i;
+ return NULL;
}
static bool read_all(int fd, void *buf, size_t len)
return TDB_SUCCESS;
}
-static uint64_t jenkins_hash(const void *key, size_t length, uint64_t seed,
- void *unused)
-{
- uint64_t ret;
- /* hash64_stable assumes lower bits are more important; they are a
- * slightly better hash. We use the upper bits first, so swap them. */
- ret = hash64_stable((const unsigned char *)key, length, seed);
- return (ret >> 32) | (ret << 32);
-}
-
enum TDB_ERROR tdb_get_attribute(struct tdb_context *tdb,
union tdb_attribute *attr)
{
} else {
tdb->name = NULL;
}
- tdb->direct_access = 0;
tdb->flags = tdb_flags;
tdb->log_fn = NULL;
- tdb->transaction = NULL;
- tdb->access = NULL;
tdb->open_flags = open_flags;
tdb->last_error = TDB_SUCCESS;
tdb->file = NULL;
tdb->openhook = NULL;
tdb->lock_fn = tdb_fcntl_lock;
tdb->unlock_fn = tdb_fcntl_unlock;
- tdb->hash_fn = jenkins_hash;
+ tdb->hash_fn = tdb_jenkins_hash;
memset(&tdb->stats, 0, sizeof(tdb->stats));
tdb->stats.base.attr = TDB_ATTRIBUTE_STATS;
tdb->stats.size = sizeof(tdb->stats);
tdb_io_init(tdb);
+ tdb->tdb2.direct_access = 0;
+ tdb->tdb2.transaction = NULL;
+ tdb->tdb2.access = NULL;
while (attr) {
switch (attr->base.attr) {
goto fail;
}
- tdb->file->next = files;
tdb->file->fd = fd;
tdb->file->device = st.st_dev;
tdb->file->inode = st.st_ino;
tdb_unlock_open(tdb, openlock);
/* This make sure we have current map_size and mmap. */
- ecode = tdb->methods->oob(tdb, tdb->file->map_size + 1, true);
+ ecode = tdb->tdb2.io->oob(tdb, tdb->file->map_size + 1, true);
if (unlikely(ecode != TDB_SUCCESS))
goto fail;
goto fail;
}
- /* Add to linked list if we're new. */
- if (tdb->file->refcnt == 1)
- files = tdb->file;
+ tdb->next = tdbs;
+ tdbs = tdb;
return tdb;
fail:
int tdb_close(struct tdb_context *tdb)
{
int ret = 0;
+ struct tdb_context **i;
tdb_trace(tdb, "tdb_close");
- if (tdb->transaction) {
+ if (tdb->tdb2.transaction) {
tdb_transaction_cancel(tdb);
}
tdb_munmap(tdb->file);
}
if (tdb->file) {
- struct tdb_file **i;
-
tdb_lock_cleanup(tdb);
if (--tdb->file->refcnt == 0) {
ret = close(tdb->file->fd);
-
- /* Remove from files list */
- for (i = &files; *i; i = &(*i)->next) {
- if (*i == tdb->file) {
- *i = tdb->file->next;
- break;
- }
- }
free(tdb->file->lockrecs);
free(tdb->file);
}
}
+ /* Remove from tdbs list */
+ for (i = &tdbs; *i; i = &(*i)->next) {
+ if (*i == tdb) {
+ *i = tdb->next;
+ break;
+ }
+ }
+
#ifdef TDB_TRACE
close(tdb->tracefd);
#endif
return ret;
}
+
+void tdb_foreach_(int (*fn)(struct tdb_context *, void *), void *p)
+{
+ struct tdb_context *i;
+
+ for (i = tdbs; i; i = i->next) {
+ if (fn(i, p) != 0)
+ break;
+ }
+}