1 /* $NetBSD: path-references.c,v 1.1.1.3 2019/12/22 12:34:06 skrll Exp $ */
2
3 // SPDX-License-Identifier: LGPL-2.1-or-later
4 /*
5 * libfdt - Flat Device Tree manipulation
6 * Testcase for string references in dtc
7 * Copyright (C) 2006 David Gibson, IBM Corporation.
8 */
9 #include <stdlib.h>
10 #include <stdio.h>
11 #include <string.h>
12 #include <stdint.h>
13
14 #include <libfdt.h>
15
16 #include "tests.h"
17 #include "testdata.h"
18
check_ref(const void * fdt,int node,const char * checkpath)19 static void check_ref(const void *fdt, int node, const char *checkpath)
20 {
21 const char *p;
22 int len;
23
24 p = fdt_getprop(fdt, node, "ref", &len);
25 if (!p)
26 FAIL("fdt_getprop(%d, \"ref\"): %s", node, fdt_strerror(len));
27 if (!streq(p, checkpath))
28 FAIL("'ref' in node at %d has value \"%s\" instead of \"%s\"",
29 node, p, checkpath);
30
31 p = fdt_getprop(fdt, node, "lref", &len);
32 if (!p)
33 FAIL("fdt_getprop(%d, \"lref\"): %s", node, fdt_strerror(len));
34 if (!streq(p, checkpath))
35 FAIL("'lref' in node at %d has value \"%s\" instead of \"%s\"",
36 node, p, checkpath);
37 }
38
check_rref(const void * fdt)39 static void check_rref(const void *fdt)
40 {
41 const char *p;
42 int len;
43
44 /* Check reference to root node */
45 p = fdt_getprop(fdt, 0, "rref", &len);
46 if (!p)
47 FAIL("fdt_getprop(0, \"rref\"): %s", fdt_strerror(len));
48 if (!streq(p, "/"))
49 FAIL("'rref' in root node has value \"%s\" instead of \"/\"",
50 p);
51 }
52
main(int argc,char * argv[])53 int main(int argc, char *argv[])
54 {
55 void *fdt;
56 const char *p;
57 int len, multilen;
58 int n1, n2, n3, n4;
59
60 test_init(argc, argv);
61 fdt = load_blob_arg(argc, argv);
62
63 n1 = fdt_path_offset(fdt, "/node1");
64 if (n1 < 0)
65 FAIL("fdt_path_offset(/node1): %s", fdt_strerror(n1));
66 n2 = fdt_path_offset(fdt, "/node2");
67 if (n2 < 0)
68 FAIL("fdt_path_offset(/node2): %s", fdt_strerror(n2));
69
70 check_ref(fdt, n1, "/node2");
71 check_ref(fdt, n2, "/node1");
72
73 /* Check multiple reference */
74 multilen = strlen("/node1") + strlen("/node2") + 2;
75 p = fdt_getprop(fdt, 0, "multiref", &len);
76 if (!p)
77 FAIL("fdt_getprop(0, \"multiref\"): %s", fdt_strerror(len));
78 if (len != multilen)
79 FAIL("multiref has wrong length, %d instead of %d",
80 len, multilen);
81 if ((!streq(p, "/node1") || !streq(p + strlen("/node1") + 1, "/node2")))
82 FAIL("multiref has wrong value");
83
84 /* Check reference to nested nodes with common prefix */
85 n3 = fdt_path_offset(fdt, "/foo/baz");
86 if (n3 < 0)
87 FAIL("fdt_path_offset(/foo/baz): %s", fdt_strerror(n3));
88 n4 = fdt_path_offset(fdt, "/foobar/baz");
89 if (n4 < 0)
90 FAIL("fdt_path_offset(/foobar/baz): %s", fdt_strerror(n4));
91 check_ref(fdt, n3, "/foobar/baz");
92 check_ref(fdt, n4, "/foo/baz");
93
94 check_rref(fdt);
95
96 PASS();
97 }
98