freebsd-dev/lib/libc/stdio/xprintf_errno.c

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/*-
* 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.
*
* $FreeBSD$
*/
#include <namespace.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <wchar.h>
#include <vis.h>
#include <assert.h>
#include <sys/time.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];
const char *p;
ret = 0;
error = *((const int *)arg[0]);
if (error >= 0 && error < sys_nerr) {
p = strerror(error);
return (__printf_out(io, pi, p, strlen(p)));
}
sprintf(buf, "errno=%d/0x%x", error, error);
ret += __printf_out(io, pi, buf, strlen(buf));
__printf_flush(io);
return(ret);
}