1/* 2 * libfdt - Flat Device Tree manipulation 3 * Testcase for fdt_path_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 30static int check_subnode(void *fdt, int parent, const char *name) 31{ 32 int offset; 33 const struct fdt_node_header *nh; 34 uint32_t tag; 35 36 verbose_printf("Checking subnode \"%s\" of %d...", name, parent); 37 offset = fdt_subnode_offset(fdt, parent, name); 38 verbose_printf("offset %d...", offset); 39 if (offset < 0) 40 FAIL("fdt_subnode_offset(\"%s\"): %s", name, fdt_strerror(offset)); 41 nh = fdt_offset_ptr(fdt, offset, sizeof(*nh)); 42 verbose_printf("pointer %p\n", nh); 43 if (! nh) 44 FAIL("NULL retrieving subnode \"%s\"", name); 45 46 tag = fdt32_to_cpu(nh->tag); 47 48 if (tag != FDT_BEGIN_NODE) 49 FAIL("Incorrect tag 0x%08x on property \"%s\"", tag, name); 50 if (!nodename_eq(nh->name, name)) 51 FAIL("Subnode name mismatch \"%s\" instead of \"%s\"", 52 nh->name, name); 53 54 return offset; 55} 56 57static void check_path_offset(void *fdt, char *path, int offset) 58{ 59 int rc; 60 61 verbose_printf("Checking offset of \"%s\" is %d...\n", path, offset); 62 63 rc = fdt_path_offset(fdt, path); 64 if (rc < 0) 65 FAIL("fdt_path_offset(\"%s\") failed: %s", 66 path, fdt_strerror(rc)); 67 if (rc != offset) 68 FAIL("fdt_path_offset(\"%s\") returned incorrect offset" 69 " %d instead of %d", path, rc, offset); 70} 71 72static void check_path_offset_namelen(void *fdt, char *path, int namelen, 73 int offset) 74{ 75 int rc; 76 77 verbose_printf("Checking offset of \"%s\" [first %d characters]" 78 " is %d...\n", path, namelen, offset); 79 80 rc = fdt_path_offset_namelen(fdt, path, namelen); 81 if (rc == offset) 82 return; 83 84 if (rc < 0) 85 FAIL("fdt_path_offset_namelen(\"%s\", %d) failed: %s", 86 path, namelen, fdt_strerror(rc)); 87 else 88 FAIL("fdt_path_offset_namelen(\"%s\", %d) returned incorrect" 89 " offset %d instead of %d", path, namelen, rc, offset); 90} 91 92int main(int argc, char *argv[]) 93{ 94 void *fdt; 95 int subnode1_offset, subnode2_offset; 96 int subsubnode1_offset, subsubnode2_offset, subsubnode2_offset2; 97 98 test_init(argc, argv); 99 fdt = load_blob_arg(argc, argv); 100 101 check_path_offset(fdt, "/", 0); 102 103 subnode1_offset = check_subnode(fdt, 0, "subnode@1"); 104 subnode2_offset = check_subnode(fdt, 0, "subnode@2"); 105 106 check_path_offset(fdt, "/subnode@1", subnode1_offset); 107 check_path_offset(fdt, "/subnode@2", subnode2_offset); 108 109 subsubnode1_offset = check_subnode(fdt, subnode1_offset, "subsubnode"); 110 subsubnode2_offset = check_subnode(fdt, subnode2_offset, "subsubnode@0"); 111 subsubnode2_offset2 = check_subnode(fdt, subnode2_offset, "subsubnode"); 112 113 check_path_offset(fdt, "/subnode@1/subsubnode", subsubnode1_offset); 114 check_path_offset(fdt, "/subnode@2/subsubnode@0", subsubnode2_offset); 115 check_path_offset(fdt, "/subnode@2/subsubnode", subsubnode2_offset2); 116 117 /* Test paths with extraneous separators */ 118 check_path_offset(fdt, "//", 0); 119 check_path_offset(fdt, "///", 0); 120 check_path_offset(fdt, "//subnode@1", subnode1_offset); 121 check_path_offset(fdt, "/subnode@1/", subnode1_offset); 122 check_path_offset(fdt, "//subnode@1///", subnode1_offset); 123 check_path_offset(fdt, "/subnode@2////subsubnode", subsubnode2_offset2); 124 125 /* Test fdt_path_offset_namelen() */ 126 check_path_offset_namelen(fdt, "/subnode@1", 1, 0); 127 check_path_offset_namelen(fdt, "/subnode@1/subsubnode", 10, subnode1_offset); 128 check_path_offset_namelen(fdt, "/subnode@1/subsubnode", 11, subnode1_offset); 129 check_path_offset_namelen(fdt, "/subnode@2TRAILINGGARBAGE", 10, subnode2_offset); 130 check_path_offset_namelen(fdt, "/subnode@2TRAILINGGARBAGE", 11, -FDT_ERR_NOTFOUND); 131 check_path_offset_namelen(fdt, "/subnode@2/subsubnode@0/more", 23, subsubnode2_offset2); 132 check_path_offset_namelen(fdt, "/subnode@2/subsubnode@0/more", 22, -FDT_ERR_NOTFOUND); 133 check_path_offset_namelen(fdt, "/subnode@2/subsubnode@0/more", 24, subsubnode2_offset2); 134 check_path_offset_namelen(fdt, "/subnode@2/subsubnode@0/more", 25, -FDT_ERR_NOTFOUND); 135 136 PASS(); 137} 138