1 files changed, 65 insertions, 0 deletions
diff --git a/lib/tdb2/test/run-remap-in-read_traverse.c b/lib/tdb2/test/run-remap-in-read_traverse.c
new file mode 100644
index 00000000000..d784ca34074
--- /dev/null
+++ b/lib/tdb2/test/run-remap-in-read_traverse.c
@@ -0,0 +1,65 @@
+/* We had a bug where we marked the tdb read-only for a tdb_traverse_read.
+ * If we then expanded the tdb, we would remap read-only, and later SEGV. */
+#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 "external-agent.h"
+#include "logging.h"
+
+static bool file_larger(int fd, tdb_len_t size)
+{
+	struct stat st;
+
+	fstat(fd, &st);
+	return st.st_size != size;
+}
+
+static unsigned add_records_to_grow(struct agent *agent, int fd, tdb_len_t size)
+{
+	unsigned int i;
+
+	for (i = 0; !file_larger(fd, size); i++) {
+		char data[20];
+		sprintf(data, "%i", i);
+		if (external_agent_operation(agent, STORE, data) != SUCCESS)
+			return 0;
+	}
+	diag("Added %u records to grow file", i);
+	return i;
+}
+
+int main(int argc, char *argv[])
+{
+	unsigned int i;
+	struct agent *agent;
+	struct tdb_context *tdb;
+	struct tdb_data d = tdb_mkdata("hello", 5);
+	const char filename[] = "run-remap-in-read_traverse.tdb";
+
+	plan_tests(4);
+
+	agent = prepare_external_agent();
+
+	tdb = tdb_open(filename, TDB_DEFAULT,
+		       O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
+
+	ok1(external_agent_operation(agent, OPEN, filename) == SUCCESS);
+	i = add_records_to_grow(agent, tdb->file->fd, tdb->file->map_size);
+
+	/* Do a traverse. */
+	ok1(tdb_traverse(tdb, NULL, NULL) == i);
+
+	/* Now store something! */
+	ok1(tdb_store(tdb, d, d, TDB_INSERT) == 0);
+	ok1(tap_log_messages == 0);
+	tdb_close(tdb);
+	free_external_agent(agent);
+	return exit_status();
+}