1/* Copyright (C) 1991-2020 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
23const char *const _sys_errlist_internal[] =
24 {
25#define _S(n, str) [n] = str,
26#include <errlist.h>
27#undef _S
28 };
29
30const char *
31__get_errlist (int errnum)
32{
33 if (errnum >= 0 && errnum < array_length (_sys_errlist_internal))
34 return _sys_errlist_internal[errnum];
35 return NULL;
36}
37
38static const union sys_errname_t
39{
40 struct
41 {
42#define MSGSTRFIELD1(line) str##line
43#define MSGSTRFIELD(line) MSGSTRFIELD1(line)
44#define _S(n, str) char MSGSTRFIELD(__LINE__)[sizeof(str)];
45#include <errlist.h>
46#undef _S
47 };
48 char str[0];
49} _sys_errname = { {
50#define _S(n, s) s,
51#include <errlist.h>
52#undef _S
53} };
54
55static const unsigned short _sys_errnameidx[] =
56{
57#define _S(n, s) [n] = offsetof(union sys_errname_t, MSGSTRFIELD(__LINE__)),
58#include <errlist.h>
59#undef _S
60};
61
62const char *
63__get_errname (int errnum)
64{
65 if (errnum < 0 || errnum >= array_length (_sys_errnameidx)
66 || (errnum > 0 && _sys_errnameidx[errnum] == 0))
67 return NULL;
68 return _sys_errname.str + _sys_errnameidx[errnum];
69}
70
71#include <errlist-compat.c>
72