stdio/FreeBSD/fputs.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  * 4. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #if defined(LIBC_SCCS) && !defined(lint)
  34 static char sccsid[] = "@(#)fputs.c     8.1 (Berkeley) 6/4/93";
  35 #endif /* LIBC_SCCS and not lint */
  36 #include <sys/cdefs.h>
  37 __FBSDID("$FreeBSD: src/lib/libc/stdio/fputs.c,v 1.12 2007/01/09 00:28:06 imp Exp $");
  38
  39 #include "namespace.h"
  40 #include <stdio.h>
  41 #include <string.h>
  42 #include "un-namespace.h"
  43 #include "fvwrite.h"
  44 #include "libc_private.h"
  45 #include "local.h"
  46
  47 // 3340719: __puts_null__ is used if string is NULL.  Defined in puts.c
  48 __private_extern__ char const __puts_null__[];
  49
  50 /*
  51  * Write the given string to the given file.
  52  */
  53 int
  54 fputs(s, fp)
  55         const char * __restrict s;
  56         FILE * __restrict fp;
  57 {
  58         int retval;
  59         struct __suio uio;
  60         struct __siov iov;
  61
  62         // 3340719: __puts_null__ is used if s is NULL
  63         if(s == NULL)
  64                 s = __puts_null__;
  65         iov.iov_base = (void *)s;
  66         iov.iov_len = uio.uio_resid = strlen(s);
  67         uio.uio_iov = &iov;
  68         uio.uio_iovcnt = 1;
  69         FLOCKFILE(fp);
  70         ORIENT(fp, -1);
  71         retval = __sfvwrite(fp, &uio);
  72         FUNLOCKFILE(fp);
  73 #if __DARWIN_UNIX03
  74         if (retval == 0)
  75                 return iov.iov_len;
  76 #endif /* __DARWIN_UNIX03 */
  77         return (retval);
  78 }