1/* Copyright (C) 1991-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <stdio.h>
19#include <errno.h>
20#include <libintl.h>
21#include <array_length.h>
22
23#ifndef ERR_MAP
24# define ERR_MAP(n) n
25#endif
26
27const char *const _sys_errlist_internal[] =
28 {
29#define _S(n, str) [ERR_MAP(n)] = str,
30#include <errlist.h>
31#undef _S
32 };
33
34const char *
35__get_errlist (int errnum)
36{
37 if (errnum >= 0 && errnum < array_length (_sys_errlist_internal))
38 return _sys_errlist_internal[errnum];
39 return NULL;
40}
41
42static const union sys_errname_t
43{
44 struct
45 {
46#define MSGSTRFIELD1(line) str##line
47#define MSGSTRFIELD(line) MSGSTRFIELD1(line)
48#define _S(n, str) char MSGSTRFIELD(__LINE__)[sizeof(#n)];
49#include <errlist.h>
50#undef _S
51 };
52 char str[0];
53} _sys_errname = { {
54#define _S(n, s) #n,
55#include <errlist.h>
56#undef _S
57} };
58
59static const unsigned short _sys_errnameidx[] =
60{
61#define _S(n, s) \
62 [ERR_MAP(n)] = offsetof(union sys_errname_t, MSGSTRFIELD(__LINE__)),
63#include <errlist.h>
64#undef _S
65};
66
67const char *
68__get_errname (int errnum)
69{
70 if (errnum < 0 || errnum >= array_length (_sys_errnameidx)
71 || (errnum > 0 && _sys_errnameidx[errnum] == 0))
72 return NULL;
73 return _sys_errname.str + _sys_errnameidx[errnum];
74}
75
76#include <errlist-compat.c>
77