os-util: add helpers for finding /etc/os-release

Place this new helpers in a new source file os-util.[ch], and move the
existing and related call path_is_os_tree() to it as well.

1 files changed, 22 insertions, 0 deletions

diff --git a/src/test/test-os-util.c b/src/test/test-os-util.c
new file mode 100644
index 000000000..1e78f352a
--- /dev/null
+++ b/src/test/test-os-util.c
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+//#include <errno.h>
+
+//#include "log.h"
+//#include "os-util.h"
+
+static void test_path_is_os_tree(void) {
+        assert_se(path_is_os_tree("/") > 0);
+        assert_se(path_is_os_tree("/etc") == 0);
+        assert_se(path_is_os_tree("/idontexist") == -ENOENT);
+}
+
+int main(int argc, char *argv[]) {
+        log_set_max_level(LOG_DEBUG);
+        log_parse_environment();
+        log_open();
+
+        test_path_is_os_tree();
+
+        return 0;
+}