tdb2: test: import tdb1's tests.

[ccan] / ccan / tdb2 / test / run-tdb1-bad-tdb-header.c

diff --git a/ccan/tdb2/test/run-tdb1-bad-tdb-header.c b/ccan/tdb2/test/run-tdb1-bad-tdb-header.c
new file mode 100644 (file)
index 0000000..9e23e97
--- /dev/null
+++ b/ccan/tdb2/test/run-tdb1-bad-tdb-header.c
@@ -0,0 +1,49 @@
+#include "tdb2-source.h"
+#include <ccan/tap/tap.h>
+#include <stdlib.h>
+#include <err.h>
+#include "tdb1-logging.h"
+
+int main(int argc, char *argv[])
+{
+       struct tdb1_context *tdb;
+       struct tdb1_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 = tdb1_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_RDWR, 0,
+                         &taplogctx, NULL);
+       ok1(!tdb);
+       tdb = tdb1_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_CREAT|O_RDWR,
+                         0600, &taplogctx, NULL);
+       ok1(tdb);
+       tdb1_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 == TDB1_VERSION);
+       hdr.version++;
+       lseek(fd, 0, SEEK_SET);
+       ok1(write(fd, &hdr, sizeof(hdr)) == sizeof(hdr));
+       close(fd);
+
+       tdb = tdb1_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 = tdb1_open_ex("run-bad-tdb-header.tdb", 1024, 0,
+                         O_RDWR|O_CREAT|O_TRUNC, 0600, &taplogctx, NULL);
+       ok1(tdb);
+       tdb1_close(tdb);
+
+       return exit_status();
+}