HardenedBSD/lib/libc/stdio/xprintf_errno.c
Konstantin Belousov aa66995b4c libc printf_render_errno(): do not use strerror()
Reviewed by:	imp
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D44916
2024-04-23 22:44:07 +03:00

70 lines
2.2 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2005 Poul-Henning Kamp
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <namespace.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <wchar.h>
#include <vis.h>
#include <assert.h>
#include <sys/time.h>
#include "errlst.h"
#include "printf.h"
int
__printf_arginfo_errno(const struct printf_info *pi __unused, size_t n,
int *argt)
{
assert(n >= 1);
argt[0] = PA_INT;
return (1);
}
int
__printf_render_errno(struct __printf_io *io, const struct printf_info *pi
__unused, const void *const *arg)
{
int ret, error;
char buf[64];
char errnomsg[NL_TEXTMAX];
ret = 0;
error = *((const int *)arg[0]);
if (error >= 0 && error < __hidden_sys_nerr) {
strerror_r(error, errnomsg, sizeof(errnomsg));
return (__printf_out(io, pi, errnomsg, strlen(errnomsg)));
}
sprintf(buf, "errno=%d/0x%x", error, error);
ret += __printf_out(io, pi, buf, strlen(buf));
__printf_flush(io);
return(ret);
}