1 /* $NetBSD: check_path.c,v 1.1.1.1 2017/06/08 15:59:26 skrll Exp $ */ 2 3 /* 4 * libfdt - Flat Device Tree manipulation 5 * Testcase for node existence 6 * Copyright (C) 2016 Konsulko Inc. 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public License 10 * as published by the Free Software Foundation; either version 2.1 of 11 * the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with this library; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23 #include <stdio.h> 24 25 #include <libfdt.h> 26 27 #include "tests.h" 28 29 #define CHECK(code) \ 30 { \ 31 int err = (code); \ 32 if (err) \ 33 FAIL(#code ": %s", fdt_strerror(err)); \ 34 } 35 36 /* 4k ought to be enough for anybody */ 37 #define FDT_COPY_SIZE (4 * 1024) 38 39 static void *open_dt(char *path) 40 { 41 void *dt, *copy; 42 43 dt = load_blob(path); 44 copy = xmalloc(FDT_COPY_SIZE); 45 46 /* 47 * Resize our DTs to 4k so that we have room to operate on 48 */ 49 CHECK(fdt_open_into(dt, copy, FDT_COPY_SIZE)); 50 51 return copy; 52 } 53 54 int main(int argc, char *argv[]) 55 { 56 void *fdt_base; 57 int fail_config, exists, check_exists; 58 59 test_init(argc, argv); 60 fail_config = 0; 61 62 if (argc != 4) 63 fail_config = 1; 64 65 if (!fail_config) { 66 if (!strcmp(argv[2], "exists")) 67 check_exists = 1; 68 else if (!strcmp(argv[2], "not-exists")) 69 check_exists = 0; 70 else 71 fail_config = 1; 72 } 73 74 if (fail_config) 75 CONFIG("Usage: %s <base dtb> <[exists|not-exists]> <node-path>", argv[0]); 76 77 fdt_base = open_dt(argv[1]); 78 79 exists = fdt_path_offset(fdt_base, argv[3]) >= 0; 80 81 if (exists == check_exists) 82 PASS(); 83 else 84 FAIL(); 85 } 86