/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (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 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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



#include <stdio.h>
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include "pkgstrct.h"
#include "pkglib.h"
#include "pkglibmsgs.h"
#include "pkglocale.h"

#define PKGMAP  "pkgmap"
#define PKGINFO "pkginfo"

int
ckvolseq(char *dir, int part, int nparts)
{
        static struct cinfo cinfo;
        char    ftype, path[PATH_MAX];

        if (part > 0) {
                ftype = 'f';
                if (part == 1) {
                        /*
                         * save stats about content information of pkginfo
                         * file in order to verify multi-volume packages
                         */
                        cinfo.cksum = cinfo.size = cinfo.modtime = (-1L);
                        (void) snprintf(path, sizeof (path), "%s/pkginfo", dir);
                        if (cverify(0, &ftype, path, &cinfo, 1)) {
                                logerr(pkg_gt(ERR_BADPKGINFO), path);
                                logerr(getErrbufAddr());
                                return (1);
                        }
                        (void) snprintf(path, sizeof (path), "%s/pkgmap", dir);
                        if (access(path, 0)) {
                                logerr(pkg_gt(ERR_NOPKGMAP), path);
                                return (2);
                        }
                } else {
                        /* temp fix due to summit problem */
                        cinfo.modtime = (-1);

                        /* pkginfo file doesn't match first floppy */
                        (void) snprintf(path, sizeof (path), "%s/pkginfo", dir);
                        if (cverify(0, &ftype, path, &cinfo, 1)) {
                                logerr(pkg_gt(MSG_CORRUPT));
                                logerr(getErrbufAddr());
                                return (1);
                        }
                }
        } else
                part = (-part);

        /*
         * each volume in a multi-volume package must
         * contain either the root.n or reloc.n directories
         */
        if (nparts != 1) {
                /* look for multi-volume specification */
                (void) snprintf(path, sizeof (path), "%s/root.%d", dir, part);
                if (access(path, 0) == 0)
                        return (0);
                (void) snprintf(path, sizeof (path), "%s/reloc.%d", dir, part);
                if (access(path, 0) == 0)
                        return (0);
                if (part == 1) {
                        (void) snprintf(path, sizeof (path), "%s/install",
                                                                dir, part);
                        if (access(path, 0) == 0)
                                return (0);
                }
                if (nparts) {
                        logerr(pkg_gt(MSG_SEQ));
                        return (2);
                }
        }
        return (0);
}