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
check_subnode(void * fdt,int parent,const char * name)30 static 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
check_path_offset(void * fdt,char * path,int offset)57 static 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
check_path_offset_namelen(void * fdt,char * path,int namelen,int offset)72 static 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
main(int argc,char * argv[])92 int 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