/* $NetBSD: parent_offset.c,v 1.1.1.3 2019/12/22 12:34:07 skrll Exp $ */ // SPDX-License-Identifier: LGPL-2.1-or-later /* * libfdt - Flat Device Tree manipulation * Testcase for fdt_parent_offset() * Copyright (C) 2006 David Gibson, IBM Corporation. */ #include #include #include #include #include #include "tests.h" #include "testdata.h" static int path_parent_len(const char *path) { const char *p = strrchr(path, '/'); if (!p) TEST_BUG(); if (p == path) return 1; else return p - path; } static void check_path(struct fdt_header *fdt, const char *path) { char *parentpath; int nodeoffset, parentoffset, parentpathoffset, pathparentlen; pathparentlen = path_parent_len(path); parentpath = alloca(pathparentlen + 1); strncpy(parentpath, path, pathparentlen); parentpath[pathparentlen] = '\0'; verbose_printf("Path: \"%s\"\tParent: \"%s\"\n", path, parentpath); nodeoffset = fdt_path_offset(fdt, path); if (nodeoffset < 0) FAIL("fdt_path_offset(%s): %s", path, fdt_strerror(nodeoffset)); parentpathoffset = fdt_path_offset(fdt, parentpath); if (parentpathoffset < 0) FAIL("fdt_path_offset(%s): %s", parentpath, fdt_strerror(parentpathoffset)); parentoffset = fdt_parent_offset(fdt, nodeoffset); if (parentoffset < 0) FAIL("fdt_parent_offset(): %s", fdt_strerror(parentoffset)); if (parentoffset != parentpathoffset) FAIL("fdt_parent_offset() returns %d instead of %d", parentoffset, parentpathoffset); } int main(int argc, char *argv[]) { void *fdt; int err; test_init(argc, argv); fdt = load_blob_arg(argc, argv); check_path(fdt, "/subnode@1"); check_path(fdt, "/subnode@2"); check_path(fdt, "/subnode@1/subsubnode"); check_path(fdt, "/subnode@2/subsubnode@0"); err = fdt_parent_offset(fdt, 0); if (err != -FDT_ERR_NOTFOUND) FAIL("fdt_parent_offset(/) returns %d instead of " "-FDT_ERR_NOTFOUND", err); PASS(); }