1 /* 2 * libfdt - Flat Device Tree manipulation 3 * Testcase for fdt_parent_offset() 4 * Copyright (C) 2006 David Gibson, IBM Corporation. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public License 8 * as published by the Free Software Foundation; either version 2.1 of 9 * the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, but 12 * WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 #include <stdlib.h> 21 #include <stdio.h> 22 #include <string.h> 23 #include <stdint.h> 24 25 #include <libfdt.h> 26 27 #include "tests.h" 28 #include "testdata.h" 29 30 static int path_parent_len(const char *path) 31 { 32 const char *p = strrchr(path, '/'); 33 34 if (!p) 35 TEST_BUG(); 36 if (p == path) 37 return 1; 38 else 39 return p - path; 40 } 41 42 static void check_path(struct fdt_header *fdt, const char *path) 43 { 44 char *parentpath; 45 int nodeoffset, parentoffset, parentpathoffset, pathparentlen; 46 47 pathparentlen = path_parent_len(path); 48 parentpath = alloca(pathparentlen + 1); 49 strncpy(parentpath, path, pathparentlen); 50 parentpath[pathparentlen] = '\0'; 51 52 verbose_printf("Path: \"%s\"\tParent: \"%s\"\n", path, parentpath); 53 54 nodeoffset = fdt_path_offset(fdt, path); 55 if (nodeoffset < 0) 56 FAIL("fdt_path_offset(%s): %s", path, fdt_strerror(nodeoffset)); 57 58 parentpathoffset = fdt_path_offset(fdt, parentpath); 59 if (parentpathoffset < 0) 60 FAIL("fdt_path_offset(%s): %s", parentpath, 61 fdt_strerror(parentpathoffset)); 62 63 parentoffset = fdt_parent_offset(fdt, nodeoffset); 64 if (parentoffset < 0) 65 FAIL("fdt_parent_offset(): %s", fdt_strerror(parentoffset)); 66 67 if (parentoffset != parentpathoffset) 68 FAIL("fdt_parent_offset() returns %d instead of %d", 69 parentoffset, parentpathoffset); 70 } 71 72 int main(int argc, char *argv[]) 73 { 74 void *fdt; 75 int err; 76 77 test_init(argc, argv); 78 fdt = load_blob_arg(argc, argv); 79 80 check_path(fdt, "/subnode@1"); 81 check_path(fdt, "/subnode@2"); 82 check_path(fdt, "/subnode@1/subsubnode"); 83 check_path(fdt, "/subnode@2/subsubnode@0"); 84 err = fdt_parent_offset(fdt, 0); 85 if (err != -FDT_ERR_NOTFOUND) 86 FAIL("fdt_parent_offset(/) returns %d instead of " 87 "-FDT_ERR_NOTFOUND", err); 88 89 PASS(); 90 } 91
