1 files changed, 74 insertions, 0 deletions
diff --git a/src/test/test-rm-rf.c b/src/test/test-rm-rf.c
new file mode 100644
index 0000000..38aa100
--- /dev/null
+++ b/src/test/test-rm-rf.c
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "process-util.h"
+#include "rm-rf.h"
+#include "string-util.h"
+#include "tests.h"
+#include "tmpfile-util.h"
+
+static void test_rm_rf_chmod_inner(void) {
+        _cleanup_free_ char *d = NULL;
+        const char *x, *y;
+
+        assert_se(getuid() != 0);
+
+        assert_se(mkdtemp_malloc(NULL, &d) >= 0);
+
+        x = strjoina(d, "/d");
+        assert_se(mkdir(x, 0700) >= 0);
+        y = strjoina(x, "/f");
+        assert_se(mknod(y, S_IFREG | 0600, 0) >= 0);
+
+        assert_se(chmod(y, 0400) >= 0);
+        assert_se(chmod(x, 0500) >= 0);
+        assert_se(chmod(d, 0500) >= 0);
+
+        assert_se(rm_rf(d, REMOVE_PHYSICAL|REMOVE_ROOT) == -EACCES);
+
+        assert_se(access(d, F_OK) >= 0);
+        assert_se(access(x, F_OK) >= 0);
+        assert_se(access(y, F_OK) >= 0);
+
+        assert_se(rm_rf(d, REMOVE_PHYSICAL|REMOVE_ROOT|REMOVE_CHMOD) >= 0);
+
+        errno = 0;
+        assert_se(access(d, F_OK) < 0 && errno == ENOENT);
+}
+
+static void test_rm_rf_chmod(void) {
+        int r;
+
+        log_info("/* %s */", __func__);
+
+        if (getuid() == 0) {
+                /* This test only works unpriv (as only then the access mask for the owning user matters),
+                 * hence drop privs here */
+
+                r = safe_fork("(setresuid)", FORK_DEATHSIG|FORK_WAIT, NULL);
+                assert_se(r >= 0);
+
+                if (r == 0) {
+                        /* child */
+
+                        assert_se(setresuid(1, 1, 1) >= 0);
+
+                        test_rm_rf_chmod_inner();
+                        _exit(EXIT_SUCCESS);
+                }
+
+                return;
+        }
+
+        test_rm_rf_chmod_inner();
+}
+
+int main(int argc, char **argv) {
+        test_setup_logging(LOG_DEBUG);
+
+        test_rm_rf_chmod();
+
+        return 0;
+}