OpenSolaris_b135/tools/cscope-fast/vpopen.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*	Copyright (c) 1988 AT&T	*/
/*	  All Rights Reserved  	*/


/*
 * Copyright (c) 1999 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

/* vpopen - view path version of the open system call */

#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <stdio.h>
#include "vp.h"

#define	READ	0

int
vpopen(char *path, int oflag)
{
	char	buf[MAXPATH + 1];
	int	returncode;
	int	i;

	if ((returncode = open(path, oflag, 0666)) == -1 && *path != '/' &&
	    oflag == READ) {
		vpinit((char *)0);
		for (i = 1; i < vpndirs; i++) {
			(void) sprintf(buf, "%s/%s", vpdirs[i], path);
			if ((returncode = open(buf, oflag, 0666)) != -1) {
				break;
			}
		}
	}
	return (returncode);
}