1 files changed, 92 insertions, 0 deletions
diff --git a/src/dtc/tests/get_path.c b/src/dtc/tests/get_path.c
new file mode 100644
index 0000000..7352976
--- /dev/null
+++ b/src/dtc/tests/get_path.c
@@ -0,0 +1,92 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Testcase for fdt_get_path()
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+#define POISON	('\xff')
+
+static void check_path_buf(void *fdt, const char *path, int pathlen, int buflen)
+{
+	int offset;
+	char buf[buflen+1];
+	int len;
+
+	offset = fdt_path_offset(fdt, path);
+	if (offset < 0)
+		FAIL("Couldn't find path \"%s\": %s", path, fdt_strerror(offset));
+
+	memset(buf, POISON, sizeof(buf)); /* poison the buffer */
+
+	len = fdt_get_path(fdt, offset, buf, buflen);
+	verbose_printf("get_path() %s -> %d -> %s\n", path, offset, buf);
+
+	if (buflen <= pathlen) {
+		if (len != -FDT_ERR_NOSPACE)
+			FAIL("fdt_get_path([%d bytes]) returns %d with "
+			     "insufficient buffer space", buflen, len);
+	} else {
+		if (len < 0)
+			FAIL("fdt_get_path([%d bytes]): %s", buflen,
+			     fdt_strerror(len));
+		if (len != 0)
+			FAIL("fdt_get_path([%d bytes]) returns %d "
+			     "instead of 0", buflen, len);
+		if (strcmp(buf, path) != 0)
+			FAIL("fdt_get_path([%d bytes]) returns \"%s\" "
+			     "instead of \"%s\"", buflen, buf, path);
+	}
+
+	if (buf[buflen] != POISON)
+		FAIL("fdt_get_path([%d bytes]) overran buffer", buflen);
+}
+
+static void check_path(void *fdt, const char *path)
+{
+	int pathlen = strlen(path);
+
+	check_path_buf(fdt, path, pathlen, 1024);
+	check_path_buf(fdt, path, pathlen, pathlen+1);
+	check_path_buf(fdt, path, pathlen, pathlen);
+	check_path_buf(fdt, path, pathlen, 0);
+	check_path_buf(fdt, path, pathlen, 2);
+}
+
+int main(int argc, char *argv[])
+{
+	void *fdt;
+
+	test_init(argc, argv);
+	fdt = load_blob_arg(argc, argv);
+
+	check_path(fdt, "/");
+	check_path(fdt, "/subnode@1");
+	check_path(fdt, "/subnode@2");
+	check_path(fdt, "/subnode@1/subsubnode");
+	check_path(fdt, "/subnode@2/subsubnode@0");
+
+	PASS();
+}