tdb2: fix O_RDONLY opens.

[ccan] / ccan / tdb2 / test / run-05-readonly-open.c

diff --git a/ccan/tdb2/test/run-05-readonly-open.c b/ccan/tdb2/test/run-05-readonly-open.c
new file mode 100644 (file)
index 0000000..0f1a434
--- /dev/null
+++ b/ccan/tdb2/test/run-05-readonly-open.c
@@ -0,0 +1,88 @@
+#include <ccan/failtest/failtest_override.h>
+#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/transaction.c>
+#include <ccan/tdb2/check.c>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+#include "logging.h"
+#include "failtest_helper.h"
+
+static bool failtest_suppress = false;
+
+/* Don't need to test everything here, just want expand testing. */
+static enum failtest_result
+suppress_failure(struct failtest_call *history, unsigned num)
+{
+       if (failtest_suppress)
+               return FAIL_DONT_FAIL;
+       return block_repeat_failures(history, num);
+}
+
+int main(int argc, char *argv[])
+{
+       unsigned int i;
+       struct tdb_context *tdb;
+       int flags[] = { TDB_DEFAULT, TDB_NOMMAP,
+                       TDB_CONVERT, TDB_NOMMAP|TDB_CONVERT };
+       struct tdb_data key = tdb_mkdata("key", 3);
+       struct tdb_data data = tdb_mkdata("data", 4), d;
+       union tdb_attribute seed_attr;
+       unsigned int msgs = 0;
+
+       failtest_init(argc, argv);
+       failtest_hook = suppress_failure;
+       failtest_exit_check = exit_check_log;
+
+       seed_attr.base.attr = TDB_ATTRIBUTE_SEED;
+       seed_attr.base.next = &tap_log_attr;
+       seed_attr.seed.seed = 0;
+
+       failtest_suppress = true;
+       plan_tests(sizeof(flags) / sizeof(flags[0]) * 11);
+       for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
+               tdb = tdb_open("run-05-readonly-open.tdb", flags[i],
+                              O_RDWR|O_CREAT|O_TRUNC, 0600, &seed_attr);
+               ok1(tdb_store(tdb, key, data, TDB_INSERT) == 0);
+               tdb_close(tdb);
+
+               failtest_suppress = false;
+               tdb = tdb_open("run-05-readonly-open.tdb", flags[i],
+                              O_RDONLY, 0600, &tap_log_attr);
+               if (!ok1(tdb))
+                       break;
+               ok1(tap_log_messages == msgs);
+               /* Fetch should succeed, stores should fail. */
+               if (!ok1(tdb_fetch(tdb, key, &d) == 0))
+                       goto fail;
+               ok1(tdb_deq(d, data));
+               free(d.dptr);
+               if (!ok1(tdb_store(tdb, key, data, TDB_MODIFY)
+                        == TDB_ERR_RDONLY))
+                       goto fail;
+               ok1(tap_log_messages == ++msgs);
+               if (!ok1(tdb_store(tdb, key, data, TDB_INSERT)
+                        == TDB_ERR_RDONLY))
+                       goto fail;
+               ok1(tap_log_messages == ++msgs);
+               failtest_suppress = true;
+               ok1(tdb_check(tdb, NULL, NULL) == 0);
+               tdb_close(tdb);
+               ok1(tap_log_messages == msgs);
+               /* SIGH: failtest bug, it doesn't save the tdb file because
+                * we have it read-only.  If we go around again, it gets
+                * changed underneath us and things get screwy. */
+               if (failtest_has_failed())
+                       break;
+       }
+       failtest_exit(exit_status());
+
+fail:
+       failtest_suppress = true;
+       tdb_close(tdb);
+       failtest_exit(exit_status());
+}