mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 17:53:37 +08:00
69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
/* Copyright (C) 1991,93,95,96,97,98,2000,2002,2006
|
|
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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <libintl.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/param.h>
|
|
#include <stdio-common/_itoa.h>
|
|
|
|
/* It is critical here that we always use the `dcgettext' function for
|
|
the message translation. Since <libintl.h> only defines the macro
|
|
`dgettext' to use `dcgettext' for optimizing programs this is not
|
|
always guaranteed. */
|
|
#ifndef dgettext
|
|
# include <locale.h> /* We need LC_MESSAGES. */
|
|
# define dgettext(domainname, msgid) dcgettext (domainname, msgid, LC_MESSAGES)
|
|
#endif
|
|
|
|
/* Return a string describing the errno code in ERRNUM. */
|
|
char *
|
|
__strerror_r (int errnum, char *buf, size_t buflen)
|
|
{
|
|
if (__builtin_expect (errnum < 0 || errnum >= _sys_nerr_internal
|
|
|| _sys_errlist_internal[errnum] == NULL, 0))
|
|
{
|
|
/* Buffer we use to print the number in. For a maximum size for
|
|
`int' of 8 bytes we never need more than 20 digits. */
|
|
char numbuf[21];
|
|
const char *unk = _("Unknown error ");
|
|
const size_t unklen = strlen (unk);
|
|
char *p, *q;
|
|
|
|
numbuf[20] = '\0';
|
|
p = _itoa_word (errnum, &numbuf[20], 10, 0);
|
|
|
|
/* Now construct the result while taking care for the destination
|
|
buffer size. */
|
|
q = __mempcpy (buf, unk, MIN (unklen, buflen));
|
|
if (unklen < buflen)
|
|
memcpy (q, p, MIN ((size_t) (&numbuf[21] - p), buflen - unklen));
|
|
|
|
/* Terminate the string in any case. */
|
|
if (buflen > 0)
|
|
buf[buflen - 1] = '\0';
|
|
|
|
return buf;
|
|
}
|
|
|
|
return (char *) _(_sys_errlist_internal[errnum]);
|
|
}
|
|
weak_alias (__strerror_r, strerror_r)
|
|
libc_hidden_def (__strerror_r)
|