tdb2: add lib/tdb2 (from CCAN init-1161-g661d41f)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 84 insertions, 0 deletions

diff --git a/lib/tdb2/test/run-open-multiple-times.c b/lib/tdb2/test/run-open-multiple-times.c
new file mode 100644
index 0000000000..240828df16
--- /dev/null
+++ b/lib/tdb2/test/run-open-multiple-times.c
@@ -0,0 +1,84 @@
+#include <ccan/tdb2/tdb.c>
+#include <ccan/tdb2/open.c>
+#include <ccan/tdb2/free.c>
+#include <ccan/tdb2/lock.c>
+#include <ccan/tdb2/io.c>
+#include <ccan/tdb2/hash.c>
+#include <ccan/tdb2/check.c>
+#include <ccan/tdb2/transaction.c>
+#include <ccan/tap/tap.h>
+#include "logging.h"
+
+int main(int argc, char *argv[])
+{
+	unsigned int i;
+	struct tdb_context *tdb, *tdb2;
+	struct tdb_data key = { (unsigned char *)&i, sizeof(i) };
+	struct tdb_data data = { (unsigned char *)&i, sizeof(i) };
+	struct tdb_data d = { NULL, 0 }; /* Bogus GCC warning */
+	int flags[] = { TDB_DEFAULT, TDB_NOMMAP,
+			TDB_CONVERT, TDB_NOMMAP|TDB_CONVERT };
+
+	plan_tests(sizeof(flags) / sizeof(flags[0]) * 28);
+	for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
+		tdb = tdb_open("run-open-multiple-times.tdb", flags[i],
+			       O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
+		ok1(tdb);
+		if (!tdb)
+			continue;
+		tdb2 = tdb_open("run-open-multiple-times.tdb", flags[i],
+				O_RDWR|O_CREAT, 0600, &tap_log_attr);
+		ok1(tdb_check(tdb, NULL, NULL) == 0);
+		ok1(tdb_check(tdb2, NULL, NULL) == 0);
+
+		/* Store in one, fetch in the other. */
+		ok1(tdb_store(tdb, key, data, TDB_REPLACE) == 0);
+		ok1(tdb_fetch(tdb2, key, &d) == TDB_SUCCESS);
+		ok1(tdb_deq(d, data));
+		free(d.dptr);
+
+		/* Vice versa, with delete. */
+		ok1(tdb_delete(tdb2, key) == 0);
+		ok1(tdb_fetch(tdb, key, &d) == TDB_ERR_NOEXIST);
+
+		/* OK, now close first one, check second still good. */
+		ok1(tdb_close(tdb) == 0);
+
+		ok1(tdb_store(tdb2, key, data, TDB_REPLACE) == 0);
+		ok1(tdb_fetch(tdb2, key, &d) == TDB_SUCCESS);
+		ok1(tdb_deq(d, data));
+		free(d.dptr);
+
+		/* Reopen */
+		tdb = tdb_open("run-open-multiple-times.tdb", flags[i],
+			       O_RDWR|O_CREAT, 0600, &tap_log_attr);
+		ok1(tdb);
+
+		ok1(tdb_transaction_start(tdb2) == 0);
+
+		/* Anything in the other one should fail. */
+		ok1(tdb_fetch(tdb, key, &d) == TDB_ERR_LOCK);
+		ok1(tap_log_messages == 1);
+		ok1(tdb_store(tdb, key, data, TDB_REPLACE) == TDB_ERR_LOCK);
+		ok1(tap_log_messages == 2);
+		ok1(tdb_transaction_start(tdb) == TDB_ERR_LOCK);
+		ok1(tap_log_messages == 3);
+		ok1(tdb_chainlock(tdb, key) == TDB_ERR_LOCK);
+		ok1(tap_log_messages == 4);
+
+		/* Transaciton should work as normal. */
+		ok1(tdb_store(tdb2, key, data, TDB_REPLACE) == TDB_SUCCESS);
+
+		/* Now... try closing with locks held. */
+		ok1(tdb_close(tdb2) == 0);
+
+		ok1(tdb_fetch(tdb, key, &d) == TDB_SUCCESS);
+		ok1(tdb_deq(d, data));
+		free(d.dptr);
+		ok1(tdb_close(tdb) == 0);
+		ok1(tap_log_messages == 4);
+		tap_log_messages = 0;
+	}
+
+	return exit_status();
+}