/* $NetBSD: get_path.c,v 1.1.1.2 2017/06/08 15:59:26 skrll Exp $ */ /* * 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 #include #include #include #include #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(); }