lib/libstand/fstat.c

   1 /*      $NetBSD: fstat.c,v 1.1 1996/01/13 22:25:38 leo Exp $    */
   2 /* $DragonFly: src/lib/libstand/fstat.c,v 1.3 2005/12/11 02:27:26 swildner Exp $                                                        */
   3
   4 /*-
   5  * Copyright (c) 1993
   6  *      The Regents of the University of California.  All rights reserved.
   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. 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  *      @(#)stat.c      8.1 (Berkeley) 6/11/93
  33  */
  34
  35 #include "stand.h"
  36
  37 int
  38 fstat(int fd, struct stat *sb)
  39 {
  40         struct open_file *f = &files[fd];
  41
  42         if ((unsigned)fd >= SOPEN_MAX || f->f_flags == 0) {
  43                 errno = EBADF;
  44                 return (-1);
  45         }
  46
  47         /* operation not defined on raw devices */
  48         if (f->f_flags & F_RAW) {
  49                 errno = EOPNOTSUPP;
  50                 return (-1);
  51         }
  52
  53         errno = (f->f_ops->fo_stat)(f, sb);
  54         return (0);
  55 }