/*	$NetBSD: md.c,v 1.7 2022/01/29 16:01:20 martin Exp $	*/

/*
 * Copyright 1997 Piermont Information Systems Inc.
 * All rights reserved.
 *
 * Based on code written by Philip A. Nelson for Piermont Information
 * Systems Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of Piermont Information Systems Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

/* md.c -- shark machine specific routines */

#include <stdio.h>
#include <curses.h>
#include <unistd.h>
#include <fcntl.h>
#include <util.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/param.h>

#include "defs.h"
#include "md.h"
#include "mbr.h"
#include "msg_defs.h"
#include "menu_defs.h"

static int clear_mbr(const char *, char *, size_t);

void
md_init(void)
{
}

void
md_init_set_status(int flags)
{
	(void)flags;
}

bool
md_get_info(struct install_partition_desc *install)
{
	struct disklabel disklabel;
	int fd;
	char dev_name[100];

	snprintf(dev_name, 100, "/dev/r%sc", pm->diskdev);

	fd = open(dev_name, O_RDONLY, 0);
	if (fd < 0) {
		endwin();
		fprintf(stderr, "Can't open %s\n", dev_name);
		exit(1);
	}
	if (ioctl(fd, DIOCGDINFO, &disklabel) == -1) {
		endwin();
		fprintf(stderr, "Can't read disklabel on %s.\n", dev_name);
		close(fd);
		exit(1);
	}
	close(fd);

	pm->dlcyl = disklabel.d_ncylinders;
	pm->dlhead = disklabel.d_ntracks;
	pm->dlsec = disklabel.d_nsectors;
	pm->sectorsize = disklabel.d_secsize;
	pm->dlcylsize = disklabel.d_secpercyl;

	/*
	 * Compute whole disk size. Take max of (pm->dlcyl*pm->dlhead*pm->dlsec)
	 * and secperunit,  just in case the disk is already labelled.
	 * (If our new label's RAW_PART size ends up smaller than the
	 * in-core RAW_PART size  value, updating the label will fail.)
	 */
	pm->dlsize = pm->dlcyl*pm->dlhead*pm->dlsec;
	if (disklabel.d_secperunit > pm->dlsize)
		pm->dlsize = disklabel.d_secperunit;

	return true;
}

/*
 * md back-end code for menu-driven BSD disklabel editor.
 */
int
md_make_bsd_partitions(struct install_partition_desc *install)
{
	return make_bsd_partitions(install);
}

/*
 * any additional partition validation
 */
bool
md_check_partitions(struct install_partition_desc *install)
{
	return true;
}

/*
 * hook called before writing new disklabel.
 */
bool
md_pre_disklabel(struct install_partition_desc *install,
    struct disk_partitions *parts)
{
	char diskpath[MAXPATHLEN];

	if (clear_mbr(pm->diskdev, diskpath, sizeof(diskpath)) == -1) {
		msg_fmt_display(MSG_badclearmbr, "%s", diskpath);
		process_menu(MENU_ok, NULL);
	}

	return true;
}

/*
 * hook called after writing disklabel to new target disk.
 */
bool
md_post_disklabel(struct install_partition_desc *install,
    struct disk_partitions *parts)
{
	return true;
}

/*
 * hook called after upgrade() or install() has finished setting
 * up the target disk but immediately before the user is given the
 * ``disks are now set up'' message.
 */
int
md_post_newfs(struct install_partition_desc *install)
{
	return 0;
}

int
md_post_extract(struct install_partition_desc *install, bool upgrade)
{
	msg_display(MSG_setbootdevice);
	process_menu(MENU_ok, NULL);

	return 0;
}

void
md_cleanup_install(struct install_partition_desc *install)
{
#ifndef DEBUG
	enable_rc_conf();
	add_rc_conf("wscons=YES\n");

	/* Configure a single screen. */
	run_program(RUN_CHROOT,
		    "sed -an -e '/^screen/s/^/#/;/^mux/s/^/#/;"
		    "H;$!d;g;w /etc/wscons.conf' /etc/wscons.conf");

#endif
}

int
md_pre_update(struct install_partition_desc *install)
{
	return 1;
}

/* Upgrade support */
int
md_update(struct install_partition_desc *install)
{
	md_post_newfs(install);
	return 1;
}

/*
 * Clears the disk's first sector by writing all zeros over it.
 * Returns 0 on success, -1 on failure.  Leaves the disk's path in
 * the output diskpath buffer for further usage in error messages.
 */
static int
clear_mbr(const char *disk, char *diskpath, size_t diskpathlen)
{
	int fd;
	char sector[512];

	fd = opendisk(disk, O_WRONLY, diskpath, diskpathlen, 0);
	if (fd < 0)
		return -1;

	memset(sector, 0, sizeof(sector));
	if (pwrite(fd, &sector, sizeof(sector), 0) < 0) {
		close(fd);
		return -1;
	}

	close(fd);
	return 0;
}

int
md_pre_mount(struct install_partition_desc *install, size_t ndx)
{
	return 0;
}

/* returns false if no write-back of parts is required */
bool
md_mbr_update_check(struct disk_partitions *parts, mbr_info_t *mbri)
{
	return false;
}

#ifdef HAVE_GPT
/*
 * New GPT partitions have been written, update bootloader or remember
 * data untill needed in md_post_newfs
 */
bool
md_gpt_post_write(struct disk_partitions *parts, part_id root_id,
    bool root_is_new, part_id efi_id, bool efi_is_new)
{
	return true;
}
#endif

bool
md_parts_use_wholedisk(struct disk_partitions *parts)
{
	return parts_use_wholedisk(parts, 0, NULL);
}