lib/libc/stdio/puts.c

   1 /*-
   2  * Copyright (c) 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Chris Torek.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * @(#)puts.c   8.1 (Berkeley) 6/4/93
  37  * $FreeBSD: src/lib/libc/stdio/puts.c,v 1.7 1999/08/28 00:01:12 peter Exp $
  38  * $DragonFly: src/lib/libc/stdio/puts.c,v 1.5 2005/07/23 20:23:06 joerg Exp $
  39  */
  40
  41 #include "namespace.h"
  42 #include <sys/types.h>
  43 #include <stdio.h>
  44 #include <string.h>
  45 #include "un-namespace.h"
  46 #include "priv_stdio.h"
  47 #include "libc_private.h"
  48
  49 /*
  50  * Write the given string to stdout, appending a newline.
  51  */
  52 int
  53 puts(char const *s)
  54 {
  55         int retval;
  56         size_t c = strlen(s);
  57         struct __suio uio;
  58         struct __siov iov[2];
  59
  60         iov[0].iov_base = __DECONST(char *, s);
  61         iov[0].iov_len = c;
  62         iov[1].iov_base = __DECONST(char *, "\n");
  63         iov[1].iov_len = 1;
  64         uio.uio_resid = c + 1;
  65         uio.uio_iov = &iov[0];
  66         uio.uio_iovcnt = 2;
  67         FLOCKFILE(stdout);
  68         retval = __sfvwrite(stdout, &uio) ? EOF : '\n';
  69         FUNLOCKFILE(stdout);
  70         return (retval);
  71 }