root/usr/src/cmd/lp/lib/access/files.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 1993 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */

/* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */

#include "errno.h"
#include "stdio.h"
#include "string.h"
#include "unistd.h"
#include "stdlib.h"

#include "lp.h"

/**
 ** getaccessfile() - BUILD NAME OF ALLOW OR DENY FILE
 **/

char *
#if     defined(__STDC__)
getaccessfile (
        char *                  dir,
        char *                  name,
        char *                  prefix,
        char *                  base
)
#else
getaccessfile (dir, name, prefix, base)
        char                    *dir,
                                *name,
                                *prefix,
                                *base;
#endif
{
        register char           *parent,
                                *file,
                                *f;

        /*
         * It makes no sense talking about the access files if
         * the directory for the form or printer doesn't exist.
         */
        parent = makepath(dir, name, (char *)0);
        if (!parent)
                return (0);
        if (Access(parent, F_OK) == -1) {
                Free(parent);
                return (0);
        }

        if (!(f = makestr(prefix, base, (char *)0))) {
                Free(parent);
                errno = ENOMEM;
                return (0);
        }
        file = makepath(parent, f, (char *)0);
        Free (f);
        Free (parent);

        return (file);
}