mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 01:33:36 +08:00
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/* Internal errno names mapping definition.
|
|
Copyright (C) 2022-2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <libintl.h>
|
|
#include <array_length.h>
|
|
|
|
#ifndef ERR_MAP
|
|
# define ERR_MAP(n) n
|
|
#endif
|
|
|
|
static const union sys_errname_t
|
|
{
|
|
struct
|
|
{
|
|
#define MSGSTRFIELD1(line) str##line
|
|
#define MSGSTRFIELD(line) MSGSTRFIELD1(line)
|
|
#define _S(n, str) char MSGSTRFIELD(__LINE__)[sizeof(#n)];
|
|
#include <errlist.h>
|
|
#undef _S
|
|
};
|
|
char str[0];
|
|
} _sys_errname = { {
|
|
#define _S(n, s) #n,
|
|
#include <errlist.h>
|
|
#undef _S
|
|
} };
|
|
|
|
static const unsigned short _sys_errnameidx[] =
|
|
{
|
|
#define _S(n, s) \
|
|
[ERR_MAP(n)] = offsetof(union sys_errname_t, MSGSTRFIELD(__LINE__)),
|
|
#include <errlist.h>
|
|
#undef _S
|
|
};
|
|
|
|
const char *
|
|
__get_errname (int errnum)
|
|
{
|
|
int mapped = ERR_MAP (errnum);
|
|
if (mapped < 0 || mapped >= array_length (_sys_errnameidx)
|
|
|| (mapped > 0 && _sys_errnameidx[mapped] == 0))
|
|
return NULL;
|
|
return _sys_errname.str + _sys_errnameidx[mapped];
|
|
}
|