1 files changed, 78 insertions, 0 deletions
diff --git a/tests/io_real.c b/tests/io_real.c
new file mode 100644
index 000000000..429027fb5
--- /dev/null
+++ b/tests/io_real.c
@@ -0,0 +1,78 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright 2022 Google LLC
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "io_mock.h"
+#include "wraps.h"
+
+#include "io_real.h"
+#include <string.h>
+
+static int io_real_open(void *state, const char *pathname, int flags, mode_t mode)
+{
+	LOG_ME;
+	return __real_open(pathname, flags, mode);
+}
+
+static FILE *io_real_fopen(void *state, const char *pathname, const char *mode)
+{
+	LOG_ME;
+	return __real_fopen(pathname, mode);
+}
+
+static FILE *io_real_fdopen(void *state, int fd, const char *mode)
+{
+	LOG_ME;
+	return __real_fdopen(fd, mode);
+}
+
+static size_t io_real_fwrite(void *state, const void *ptr, size_t size, size_t nmemb, FILE *fp)
+{
+	return __real_fwrite(ptr, size, nmemb, fp);
+}
+
+static int io_real_fclose(void *state, FILE *fp)
+{
+	LOG_ME;
+	return __real_fclose(fp);
+}
+
+/* Mock ios that defer to the real io functions.
+ * These exist so that code coverage can print to real files on disk.
+ */
+static const struct io_mock real_io = {
+	.iom_open = io_real_open,
+	.iom_fopen = io_real_fopen,
+	.iom_fwrite = io_real_fwrite,
+	.iom_fdopen = io_real_fdopen,
+	.iom_fclose = io_real_fclose,
+};
+
+/* Return 0 if string ends with suffix. */
+static int check_suffix(const char *string, const char *suffix)
+{
+	int len_l = strlen(string);
+	int len_r = strlen(suffix);
+	if (len_l > len_r)
+		return strcmp(string + len_l - len_r, suffix);
+	return 1;
+}
+
+void maybe_unmock_io(const char *pathname)
+{
+	const char *gcov_suffix = ".gcda";
+	const char *llvm_cov_suffix = ".profraw";
+	if (!check_suffix(pathname, gcov_suffix) || !check_suffix(pathname, llvm_cov_suffix))
+		io_mock_register(&real_io);
+}