puts.c revision 1.11 
1/*	$NetBSD: puts.c,v 1.11 2003/07/18 21:52:18 nathanw Exp $	*/
2
3/*-
4 * Copyright (c) 1990, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Chris Torek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the University of
21 *	California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 *    may be used to endorse or promote products derived from this software
24 *    without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 */
38
39#include <sys/cdefs.h>
40#if defined(LIBC_SCCS) && !defined(lint)
41#if 0
42static char sccsid[] = "@(#)puts.c	8.1 (Berkeley) 6/4/93";
43#else
44__RCSID("$NetBSD: puts.c,v 1.11 2003/07/18 21:52:18 nathanw Exp $");
45#endif
46#endif /* LIBC_SCCS and not lint */
47
48#include <assert.h>
49#include <errno.h>
50#include <stdio.h>
51#include <string.h>
52#include "fvwrite.h"
53#include "reentrant.h"
54#include "local.h"
55
56/*
57 * Write the given string to stdout, appending a newline.
58 */
59int
60puts(s)
61	char const *s;
62{
63	size_t c = strlen(s);
64	struct __suio uio;
65	struct __siov iov[2];
66	int r;
67
68	_DIAGASSERT(s != NULL);
69
70	/* LINTED we don't touch the string */
71	iov[0].iov_base = (void *)s;
72	iov[0].iov_len = c;
73	iov[1].iov_base = "\n";
74	iov[1].iov_len = 1;
75	uio.uio_resid = c + 1;
76	uio.uio_iov = &iov[0];
77	uio.uio_iovcnt = 2;
78	FLOCKFILE(stdout);
79	r = __sfvwrite(stdout, &uio);
80	FUNLOCKFILE(stdout);
81	return (r ? EOF : '\n');
82}
83