gonzui

    1: /*      $OpenBSD: putc.c,v 1.12 2009/11/21 10:11:54 guenther Exp $ */
    2: /*-
    3:  * Copyright (c) 1990, 1993
    4:  *      The Regents of the University of California.  All rights reserved.
    5:  *
    6:  * This code is derived from software contributed to Berkeley by
    7:  * Chris Torek.
    8:  *
    9:  * Redistribution and use in source and binary forms, with or without
   10:  * modification, are permitted provided that the following conditions
   11:  * are met:
   12:  * 1. Redistributions of source code must retain the above copyright
   13:  *    notice, this list of conditions and the following disclaimer.
   14:  * 2. Redistributions in binary form must reproduce the above copyright
   15:  *    notice, this list of conditions and the following disclaimer in the
   16:  *    documentation and/or other materials provided with the distribution.
   17:  * 3. Neither the name of the University nor the names of its contributors
   18:  *    may be used to endorse or promote products derived from this software
   19:  *    without specific prior written permission.
   20:  *
   21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31:  * SUCH DAMAGE.
   32:  */
   33: 
   34: #include <stdio.h>
   35: #include <errno.h>
   36: #include "local.h"
   37: 
   38: /*
   39:  * A subroutine version of the macro putc_unlocked.
   40:  */
   41: #undef putc_unlocked
   42: 
   43: int
   44: putc_unlocked(int c, FILE *fp)
   45: {
   46:         if (cantwrite(fp)) {
   47:                 __sseterr(fp, EBADF);
   48:                 return (EOF);
   49:         }
   50:         _SET_ORIENTATION(fp, -1);
   51:         return (__sputc(c, fp));
   52: }
   53: 
   54: /*
   55:  * A subroutine version of the macro putc.
   56:  */
   57: #undef putc
   58: 
   59: int
   60: putc(int c, FILE *fp)
   61: {
   62:         int ret;
   63: 
   64:         FLOCKFILE(fp);
   65:         ret = putc_unlocked(c, fp);
   66:         FUNLOCKFILE(fp);
   67:         return (ret);
   68: }