]>
git.ipfire.org Git - thirdparty/glibc.git/blob - string/xpg-strerror.c
10fc1bf99f3494d623950c4c45c5e4254ca1f272
1 /* Copyright (C) 1991, 1993, 1995-1998, 2000, 2002, 2004, 2010, 2011
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 #include <sys/param.h>
27 /* Fill buf with a string describing the errno code in ERRNUM. */
29 __xpg_strerror_r (int errnum
, char *buf
, size_t buflen
)
31 const char *estr
= __strerror_r (errnum
, buf
, buflen
);
32 size_t estrlen
= strlen (estr
);
36 assert (errnum
< 0 || errnum
>= _sys_nerr_internal
37 || _sys_errlist_internal
[errnum
] == NULL
);
40 assert (errnum
>= 0 && errnum
< _sys_nerr_internal
41 && _sys_errlist_internal
[errnum
] != NULL
);
43 /* Terminate the string in any case. */
45 *((char *) __mempcpy (buf
, estr
, MIN (buflen
- 1, estrlen
))) = '\0';
47 return buflen
<= estrlen
? ERANGE
: 0;