1 /* $NetBSD: get_path.c,v 1.1.1.2 2017/06/08 15:59:26 skrll Exp $ */ 2 3 /* 4 * libfdt - Flat Device Tree manipulation 5 * Testcase for fdt_get_path() 6 * Copyright (C) 2006 David Gibson, IBM Corporation. 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 #include <stdlib.h> 23 #include <stdio.h> 24 #include <string.h> 25 #include <stdint.h> 26 27 #include <libfdt.h> 28 29 #include "tests.h" 30 #include "testdata.h" 31 32 #define POISON ('\xff') 33 34 static void check_path_buf(void *fdt, const char *path, int pathlen, int buflen) 35 { 36 int offset; 37 char buf[buflen+1]; 38 int len; 39 40 offset = fdt_path_offset(fdt, path); 41 if (offset < 0) 42 FAIL("Couldn't find path \"%s\": %s", path, fdt_strerror(offset)); 43 44 memset(buf, POISON, sizeof(buf)); /* poison the buffer */ 45 46 len = fdt_get_path(fdt, offset, buf, buflen); 47 verbose_printf("get_path() %s -> %d -> %s\n", path, offset, buf); 48 49 if (buflen <= pathlen) { 50 if (len != -FDT_ERR_NOSPACE) 51 FAIL("fdt_get_path([%d bytes]) returns %d with " 52 "insufficient buffer space", buflen, len); 53 } else { 54 if (len < 0) 55 FAIL("fdt_get_path([%d bytes]): %s", buflen, 56 fdt_strerror(len)); 57 if (len != 0) 58 FAIL("fdt_get_path([%d bytes]) returns %d " 59 "instead of 0", buflen, len); 60 if (strcmp(buf, path) != 0) 61 FAIL("fdt_get_path([%d bytes]) returns \"%s\" " 62 "instead of \"%s\"", buflen, buf, path); 63 } 64 65 if (buf[buflen] != POISON) 66 FAIL("fdt_get_path([%d bytes]) overran buffer", buflen); 67 } 68 69 static void check_path(void *fdt, const char *path) 70 { 71 int pathlen = strlen(path); 72 73 check_path_buf(fdt, path, pathlen, 1024); 74 check_path_buf(fdt, path, pathlen, pathlen+1); 75 check_path_buf(fdt, path, pathlen, pathlen); 76 check_path_buf(fdt, path, pathlen, 0); 77 check_path_buf(fdt, path, pathlen, 2); 78 } 79 80 int main(int argc, char *argv[]) 81 { 82 void *fdt; 83 84 test_init(argc, argv); 85 fdt = load_blob_arg(argc, argv); 86 87 check_path(fdt, "/"); 88 check_path(fdt, "/subnode@1"); 89 check_path(fdt, "/subnode@2"); 90 check_path(fdt, "/subnode@1/subsubnode"); 91 check_path(fdt, "/subnode@2/subsubnode@0"); 92 93 PASS(); 94 } 95