xref: /freebsd/lib/libc/stdio/fputs.c (revision dc36d6f9bb1753f3808552f3afd30eda9a7b206a)

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Chris Torek.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 "un-namespace.h"
#include "fvwrite.h"
#include "libc_private.h"
#include "local.h"

/*
 * Write the given string to the given file.
 */
int
fputs_unlocked(const char * __restrict s, FILE * __restrict fp)
{
	int retval;
	struct __suio uio;
	struct __siov iov;

	iov.iov_base = (void *)s;
	uio.uio_resid = iov.iov_len = strlen(s);
	uio.uio_iov = &iov;
	uio.uio_iovcnt = 1;
	ORIENT(fp, -1);
	retval = __sfvwrite(fp, &uio);
	if (retval == 0)
		return (iov.iov_len > INT_MAX ? INT_MAX : iov.iov_len);
	return (retval);
}

int
fputs(const char * __restrict s, FILE * __restrict fp)
{
	int retval;

	FLOCKFILE_CANCELSAFE(fp);
	retval = fputs_unlocked(s, fp);
	FUNLOCKFILE_CANCELSAFE();
	return (retval);
}