45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* Copyright (C) 1991-2014 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <libintl.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
/* Return a string describing the errno code in ERRNUM.
|
|
The storage is good only until the next call to strerror.
|
|
Writing to the storage causes undefined behavior. */
|
|
libc_freeres_ptr (static char *buf);
|
|
|
|
char *
|
|
strerror (errnum)
|
|
int errnum;
|
|
{
|
|
char *ret = __strerror_r (errnum, NULL, 0);
|
|
int saved_errno;
|
|
|
|
if (__glibc_likely (ret != NULL))
|
|
return ret;
|
|
saved_errno = errno;
|
|
if (buf == NULL)
|
|
buf = malloc (1024);
|
|
__set_errno (saved_errno);
|
|
if (buf == NULL)
|
|
return _("Unknown error");
|
|
return __strerror_r (errnum, buf, 1024);
|
|
}
|