xref: /illumos-kvm-cmd/kvm/libfdt/fdt_strerror.c (revision 68396ea9)
1 /*
2  * libfdt - Flat Device Tree manipulation
3  * Copyright (C) 2006 David Gibson, IBM Corporation.
4  *
5  * libfdt is dual licensed: you can use it either under the terms of
6  * the GPL, or the BSD license, at your option.
7  *
8  *  a) This library is free software; you can redistribute it and/or
9  *     modify it under the terms of the GNU General Public License as
10  *     published by the Free Software Foundation; either version 2 of the
11  *     License, or (at your option) any later version.
12  *
13  *     This library is distributed in the hope that it will be useful,
14  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
15  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  *     GNU General Public License for more details.
17  *
18  *     You should have received a copy of the GNU General Public
19  *     License along with this library; if not, write to the Free
20  *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
21  *     MA 02110-1301 USA
22  *
23  * Alternatively,
24  *
25  *  b) Redistribution and use in source and binary forms, with or
26  *     without modification, are permitted provided that the following
27  *     conditions are met:
28  *
29  *     1. Redistributions of source code must retain the above
30  *        copyright notice, this list of conditions and the following
31  *        disclaimer.
32  *     2. Redistributions in binary form must reproduce the above
33  *        copyright notice, this list of conditions and the following
34  *        disclaimer in the documentation and/or other materials
35  *        provided with the distribution.
36  *
37  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
38  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
39  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
40  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
41  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
42  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46  *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
47  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
48  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
49  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
50  */
51 #include "libfdt_env.h"
52 
53 #include <fdt.h>
54 #include <libfdt.h>
55 
56 #include "libfdt_internal.h"
57 
58 struct errtabent {
59 	const char *str;
60 };
61 
62 #define ERRTABENT(val) \
63 	[(val)] = { .str = #val, }
64 
65 static struct errtabent errtable[] = {
66 	ERRTABENT(FDT_ERR_NOTFOUND),
67 	ERRTABENT(FDT_ERR_EXISTS),
68 	ERRTABENT(FDT_ERR_NOSPACE),
69 
70 	ERRTABENT(FDT_ERR_BADOFFSET),
71 	ERRTABENT(FDT_ERR_BADPATH),
72 	ERRTABENT(FDT_ERR_BADSTATE),
73 
74 	ERRTABENT(FDT_ERR_TRUNCATED),
75 	ERRTABENT(FDT_ERR_BADMAGIC),
76 	ERRTABENT(FDT_ERR_BADVERSION),
77 	ERRTABENT(FDT_ERR_BADSTRUCTURE),
78 	ERRTABENT(FDT_ERR_BADLAYOUT),
79 };
80 #define ERRTABSIZE	(sizeof(errtable) / sizeof(errtable[0]))
81 
fdt_strerror(int errval)82 const char *fdt_strerror(int errval)
83 {
84 	if (errval > 0)
85 		return "<valid offset/length>";
86 	else if (errval == 0)
87 		return "<no error>";
88 	else if (errval > -ERRTABSIZE) {
89 		const char *s = errtable[-errval].str;
90 
91 		if (s)
92 			return s;
93 	}
94 
95 	return "<unknown error>";
96 }
97