1 // SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
2 /*
3 * libfdt - Flat Device Tree manipulation
4 * Copyright (C) 2006 David Gibson, IBM Corporation.
5 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
6 */
7 #include "libfdt_env.h"
8
9 #include <fdt.h>
10 #include <libfdt.h>
11
12 #include "libfdt_internal.h"
13
14 struct fdt_errtabent {
15 const char *str;
16 };
17
18 #define FDT_ERRTABENT(val) \
19 [(val)] = { .str = #val, }
20
21 static struct fdt_errtabent fdt_errtable[] = {
22 FDT_ERRTABENT(FDT_ERR_NOTFOUND),
23 FDT_ERRTABENT(FDT_ERR_EXISTS),
24 FDT_ERRTABENT(FDT_ERR_NOSPACE),
25
26 FDT_ERRTABENT(FDT_ERR_BADOFFSET),
27 FDT_ERRTABENT(FDT_ERR_BADPATH),
28 FDT_ERRTABENT(FDT_ERR_BADPHANDLE),
29 FDT_ERRTABENT(FDT_ERR_BADSTATE),
30
31 FDT_ERRTABENT(FDT_ERR_TRUNCATED),
32 FDT_ERRTABENT(FDT_ERR_BADMAGIC),
33 FDT_ERRTABENT(FDT_ERR_BADVERSION),
34 FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
35 FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
36 FDT_ERRTABENT(FDT_ERR_INTERNAL),
37 FDT_ERRTABENT(FDT_ERR_BADNCELLS),
38 FDT_ERRTABENT(FDT_ERR_BADVALUE),
39 FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
40 FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
41 FDT_ERRTABENT(FDT_ERR_BADFLAGS),
42 };
43 #define FDT_ERRTABSIZE (sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
44
fdt_strerror(int errval)45 const char *fdt_strerror(int errval)
46 {
47 if (errval > 0)
48 return "<valid offset/length>";
49 else if (errval == 0)
50 return "<no error>";
51 else if (errval > -FDT_ERRTABSIZE) {
52 const char *s = fdt_errtable[-errval].str;
53
54 if (s)
55 return s;
56 }
57
58 return "<unknown error>";
59 }
60