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stat.c revision 1.2 
      1 /*-
      2  * Copyright (c) 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. 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  *	from: @(#)stat.c	8.1 (Berkeley) 6/11/93
     34  *	     $Id: stat.c,v 1.2 1994/08/22 21:56:14 brezak Exp $
     35  */
     36 
     37 #include "stand.h"
     38 
     39 int
     40 fstat(fd, sb)
     41 	int fd;
     42 	struct stat *sb;
     43 {
     44 	register struct open_file *f = &files[fd];
     45 
     46 	if ((unsigned)fd >= SOPEN_MAX || f->f_flags == 0) {
     47 		errno = EBADF;
     48 		return (-1);
     49 	}
     50 
     51 	/* operation not defined on raw devices */
     52 	if (f->f_flags & F_RAW) {
     53 		errno = EOPNOTSUPP;
     54 		return (-1);
     55 	}
     56 
     57 	errno = (f->f_ops->stat)(f, sb);
     58 	return (0);
     59 }
     60 
     61 int
     62 stat(str, sb)
     63 	const char *str;
     64 	struct stat *sb;
     65 {
     66 	int fd, rv;
     67 
     68 	fd = open(str, 0);
     69 	if (fd < 0)
     70 		return (-1);
     71 	rv = fstat(fd, sb);
     72 	(void)close(fd);
     73 	return (rv);
     74 }
     75