fdt_strerror.c revision 9537:ad5b3252dcc6 
1/*
2 * libfdt - Flat Device Tree manipulation
3 * Copyright (C) 2006 David Gibson, IBM Corporation.
4 *
5 *     Redistribution and use in source and binary forms, with or
6 *     without modification, are permitted provided that the following
7 *     conditions are met:
8 *
9 *     1. Redistributions of source code must retain the above
10 *        copyright notice, this list of conditions and the following
11 *        disclaimer.
12 *     2. Redistributions in binary form must reproduce the above
13 *        copyright notice, this list of conditions and the following
14 *        disclaimer in the documentation and/or other materials
15 *        provided with the distribution.
16 *
17 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
18 *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
19 *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20 *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
22 *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
29 *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31#include <fdt.h>
32#include <libfdt.h>
33
34#include "libfdt_env.h"
35#include "libfdt_internal.h"
36
37struct fdt_errtabent {
38        const char *str;
39};
40
41#define FDT_ERRTABENT(val) \
42        [(val)] = { .str = #val, }
43
44static struct fdt_errtabent fdt_errtable[] = {
45        FDT_ERRTABENT(FDT_ERR_NOTFOUND),
46        FDT_ERRTABENT(FDT_ERR_EXISTS),
47        FDT_ERRTABENT(FDT_ERR_NOSPACE),
48
49        FDT_ERRTABENT(FDT_ERR_BADOFFSET),
50        FDT_ERRTABENT(FDT_ERR_BADPATH),
51        FDT_ERRTABENT(FDT_ERR_BADSTATE),
52
53        FDT_ERRTABENT(FDT_ERR_TRUNCATED),
54        FDT_ERRTABENT(FDT_ERR_BADMAGIC),
55        FDT_ERRTABENT(FDT_ERR_BADVERSION),
56        FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
57        FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
58};
59#define FDT_ERRTABSIZE	(sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
60
61const char *fdt_strerror(int errval)
62{
63        if (errval > 0)
64                return "<valid offset/length>";
65        else if (errval == 0)
66                return "<no error>";
67        else if (errval > -FDT_ERRTABSIZE) {
68                const char *s = fdt_errtable[-errval].str;
69
70                if (s)
71                        return s;
72        }
73
74        return "<unknown error>";
75}
76