/*
wrapped connection to a tdb database
to close just talloc_free() the tdb_wrap pointer
*/
struct tdb_wrap *tdb_wrap_open(TALLOC_CTX *mem_ctx,
const char *name, int hash_size, int tdb_flags,
int open_flags, mode_t mode)
{
struct tdb_wrap *result;
struct tdb_wrap_private *w;
if (name == NULL) {
errno = EINVAL;
return NULL;
}
result = talloc(mem_ctx, struct tdb_wrap);
if (result == NULL) {
return NULL;
}
for (w=tdb_list;w;w=w->next) {
if (strcmp(name, w->name) == 0) {
break;
}
}
if (w == NULL) {
if (tdb_flags & TDB_MUTEX_LOCKING) {
if (!tdb_runtime_check_for_robust_mutexes()) {
tdb_flags &= ~TDB_MUTEX_LOCKING;
}
}
w = tdb_wrap_private_open(result, name, hash_size, tdb_flags,
open_flags, mode);
} else {
/*
* Correctly use talloc_reference: The tdb will be
* closed when "w" is being freed. The caller never
* sees "w", so an incorrect use of talloc_free(w)
* instead of calling talloc_unlink is not possible.
* To avoid having to refcount ourselves, "w" will
* have multiple parents that hang off all the
* tdb_wrap's being returned from here. Those parents
* can be freed without problem.
*/
if (talloc_reference(result, w) == NULL) {
goto fail;
}
}
if (w == NULL) {
goto fail;
}
result->tdb = w->tdb;
return result;
fail:
TALLOC_FREE(result);
return NULL;
}
/*
wrapped connection to a tdb database
to close just talloc_free() the tdb_wrap pointer
*/
struct tdb_wrap *tdb_wrap_open(TALLOC_CTX *mem_ctx,
const char *name, int hash_size, int tdb_flags,
int open_flags, mode_t mode,
struct loadparm_context *lp_ctx)
{
struct tdb_wrap *result;
struct tdb_wrap_private *w;
/* If they specify a .ntdb extension, but the code hasn't been
* converted, we want to complain. */
if (name && strends(name, ".ntdb")) {
DEBUG(2, ("tdb(%s): This code does not yet understand ntdb. Please report.\n", name));
return NULL;
}
result = talloc(mem_ctx, struct tdb_wrap);
if (result == NULL) {
return NULL;
}
for (w=tdb_list;w;w=w->next) {
if (strcmp(name, w->name) == 0) {
break;
}
}
if (w == NULL) {
w = tdb_wrap_private_open(result, name, hash_size, tdb_flags,
open_flags, mode, lp_ctx);
} else {
/*
* Correctly use talloc_reference: The tdb will be
* closed when "w" is being freed. The caller never
* sees "w", so an incorrect use of talloc_free(w)
* instead of calling talloc_unlink is not possible.
* To avoid having to refcount ourselves, "w" will
* have multiple parents that hang off all the
* tdb_wrap's being returned from here. Those parents
* can be freed without problem.
*/
if (talloc_reference(result, w) == NULL) {
goto fail;
}
}
if (w == NULL) {
goto fail;
}
result->tdb = w->tdb;
return result;
fail:
TALLOC_FREE(result);
return NULL;
}
