1 files changed, 59 insertions, 0 deletions
diff --git a/test/run-bad-tdb-header.c b/test/run-bad-tdb-header.c
new file mode 100644
index 0000000..9d29fdf
--- /dev/null
+++ b/test/run-bad-tdb-header.c
@@ -0,0 +1,59 @@
+#include "../common/tdb_private.h"
+#include "../common/io.c"
+#include "../common/tdb.c"
+#include "../common/lock.c"
+#include "../common/freelist.c"
+#include "../common/traverse.c"
+#include "../common/transaction.c"
+#include "../common/error.c"
+#include "../common/open.c"
+#include "../common/check.c"
+#include "../common/hash.c"
+#include "../common/mutex.c"
+#include "tap-interface.h"
+#include <stdlib.h>
+#include "logging.h"
+
+int main(int argc, char *argv[])
+{
+	struct tdb_context *tdb;
+	struct tdb_header hdr;
+	int fd;
+
+	plan_tests(11);
+	/* Can open fine if complete crap, as long as O_CREAT. */
+	fd = open("run-bad-tdb-header.tdb", O_RDWR|O_CREAT|O_TRUNC, 0600);
+	ok1(fd >= 0);
+	ok1(write(fd, "hello world", 11) == 11);
+	close(fd);
+	tdb = tdb_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_RDWR, 0,
+			  &taplogctx, NULL);
+	ok1(!tdb);
+	tdb = tdb_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_CREAT|O_RDWR,
+			  0600, &taplogctx, NULL);
+	ok1(tdb);
+	tdb_close(tdb);
+
+	/* Now, with wrong version it should *not* overwrite. */
+	fd = open("run-bad-tdb-header.tdb", O_RDWR);
+	ok1(fd >= 0);
+	ok1(read(fd, &hdr, sizeof(hdr)) == sizeof(hdr));
+	ok1(hdr.version == TDB_VERSION);
+	hdr.version++;
+	lseek(fd, 0, SEEK_SET);
+	ok1(write(fd, &hdr, sizeof(hdr)) == sizeof(hdr));
+	close(fd);
+
+	tdb = tdb_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_RDWR|O_CREAT,
+			  0600, &taplogctx, NULL);
+	ok1(errno == EIO);
+	ok1(!tdb);
+
+	/* With truncate, will be fine. */
+	tdb = tdb_open_ex("run-bad-tdb-header.tdb", 1024, 0,
+			  O_RDWR|O_CREAT|O_TRUNC, 0600, &taplogctx, NULL);
+	ok1(tdb);
+	tdb_close(tdb);
+
+	return exit_status();
+}