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

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

1 files changed, 48 insertions, 0 deletions

diff --git a/lib/tdb2/test/run-missing-entries.c b/lib/tdb2/test/run-missing-entries.c
new file mode 100644
index 0000000000..e99572f64c
--- /dev/null
+++ b/lib/tdb2/test/run-missing-entries.c
@@ -0,0 +1,48 @@
+/* Another test revealed that we lost an entry.  This reproduces it. */
+#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/traverse.c>
+#include <ccan/tdb2/transaction.c>
+#include <ccan/tap/tap.h>
+#include "logging.h"
+
+#define NUM_RECORDS 1189
+
+/* We use the same seed which we saw this failure on. */
+static uint64_t failhash(const void *key, size_t len, uint64_t seed, void *p)
+{
+	seed = 699537674708983027ULL;
+	return hash64_stable((const unsigned char *)key, len, seed);
+}
+
+int main(int argc, char *argv[])
+{
+	int i;
+	struct tdb_context *tdb;
+	struct tdb_data key = { (unsigned char *)&i, sizeof(i) };
+	struct tdb_data data = { (unsigned char *)&i, sizeof(i) };
+	union tdb_attribute hattr = { .hash = { .base = { TDB_ATTRIBUTE_HASH },
+						.fn = failhash } };
+
+	hattr.base.next = &tap_log_attr;
+	plan_tests(1 + 2 * NUM_RECORDS + 1);
+
+	tdb = tdb_open("run-missing-entries.tdb", TDB_INTERNAL,
+		       O_RDWR|O_CREAT|O_TRUNC, 0600, &hattr);
+	ok1(tdb);
+	if (tdb) {
+		for (i = 0; i < NUM_RECORDS; i++) {
+			ok1(tdb_store(tdb, key, data, TDB_REPLACE) == 0);
+			ok1(tdb_check(tdb, NULL, NULL) == 0);
+		}
+		tdb_close(tdb);
+	}
+
+	ok1(tap_log_messages == 0);
+	return exit_status();
+}