gonzui

    1: /*      $OpenBSD: fclose.c,v 1.9 2009/11/09 00:18:27 kurt 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 <errno.h>
   35: #include <stdio.h>
   36: #include <stdlib.h>
   37: #include "local.h"
   38: 
   39: int
   40: fclose_eno(FILE *fp, int *eno)
   41: {
   42:         int r, e = 0;
   43: 
   44:         if (fp->_flags == 0) { /* not open! */
   45:                 e = EBADF;
   46:                 r = EOF; goto e1;
   47:         }
   48:         FLOCKFILE(fp);
   49:         WCIO_FREE(fp);
   50:         r = fp->_flags & __SWR ? __sflush(fp) : 0;
   51:         if (fp->_close != NULL && (e = (*fp->_close)(fp->_cookie)) < 0 && (e &= 0xffff) != 0)
   52:                 r = EOF;
   53:         if (fp->_flags & __SMBF)
   54:                 free((char *)fp->_bf._base);
   55:         if (HASUB(fp))
   56:                 FREEUB(fp);
   57:         if (HASLB(fp))
   58:                 FREELB(fp);
   59:         fp->_r = fp->_w = 0;   /* Mess up if reaccessed. */
   60:         fp->_flags = 0;                /* Release this FILE for reuse. */
   61:         FUNLOCKFILE(fp);
   62:         e1: if (r == EOF && eno) *eno = e; return (r);
   63: }
   64: int fclose(FILE *fp){ return fclose_eno(fp, NULL); }