1/*	$NetBSD: md.c,v 1.7 2022/01/29 16:01:20 martin Exp $	*/
2
3/*
4 * Copyright 1997 Piermont Information Systems Inc.
5 * All rights reserved.
6 *
7 * Based on code written by Philip A. Nelson for Piermont Information
8 * Systems Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. The name of Piermont Information Systems Inc. may not be used to endorse
19 *    or promote products derived from this software without specific prior
20 *    written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35/* md.c -- shark machine specific routines */
36
37#include <stdio.h>
38#include <curses.h>
39#include <unistd.h>
40#include <fcntl.h>
41#include <util.h>
42#include <sys/types.h>
43#include <sys/ioctl.h>
44#include <sys/param.h>
45
46#include "defs.h"
47#include "md.h"
48#include "mbr.h"
49#include "msg_defs.h"
50#include "menu_defs.h"
51
52static int clear_mbr(const char *, char *, size_t);
53
54void
55md_init(void)
56{
57}
58
59void
60md_init_set_status(int flags)
61{
62	(void)flags;
63}
64
65bool
66md_get_info(struct install_partition_desc *install)
67{
68	struct disklabel disklabel;
69	int fd;
70	char dev_name[100];
71
72	snprintf(dev_name, 100, "/dev/r%sc", pm->diskdev);
73
74	fd = open(dev_name, O_RDONLY, 0);
75	if (fd < 0) {
76		endwin();
77		fprintf(stderr, "Can't open %s\n", dev_name);
78		exit(1);
79	}
80	if (ioctl(fd, DIOCGDINFO, &disklabel) == -1) {
81		endwin();
82		fprintf(stderr, "Can't read disklabel on %s.\n", dev_name);
83		close(fd);
84		exit(1);
85	}
86	close(fd);
87
88	pm->dlcyl = disklabel.d_ncylinders;
89	pm->dlhead = disklabel.d_ntracks;
90	pm->dlsec = disklabel.d_nsectors;
91	pm->sectorsize = disklabel.d_secsize;
92	pm->dlcylsize = disklabel.d_secpercyl;
93
94	/*
95	 * Compute whole disk size. Take max of (pm->dlcyl*pm->dlhead*pm->dlsec)
96	 * and secperunit,  just in case the disk is already labelled.
97	 * (If our new label's RAW_PART size ends up smaller than the
98	 * in-core RAW_PART size  value, updating the label will fail.)
99	 */
100	pm->dlsize = pm->dlcyl*pm->dlhead*pm->dlsec;
101	if (disklabel.d_secperunit > pm->dlsize)
102		pm->dlsize = disklabel.d_secperunit;
103
104	return true;
105}
106
107/*
108 * md back-end code for menu-driven BSD disklabel editor.
109 */
110int
111md_make_bsd_partitions(struct install_partition_desc *install)
112{
113	return make_bsd_partitions(install);
114}
115
116/*
117 * any additional partition validation
118 */
119bool
120md_check_partitions(struct install_partition_desc *install)
121{
122	return true;
123}
124
125/*
126 * hook called before writing new disklabel.
127 */
128bool
129md_pre_disklabel(struct install_partition_desc *install,
130    struct disk_partitions *parts)
131{
132	char diskpath[MAXPATHLEN];
133
134	if (clear_mbr(pm->diskdev, diskpath, sizeof(diskpath)) == -1) {
135		msg_fmt_display(MSG_badclearmbr, "%s", diskpath);
136		process_menu(MENU_ok, NULL);
137	}
138
139	return true;
140}
141
142/*
143 * hook called after writing disklabel to new target disk.
144 */
145bool
146md_post_disklabel(struct install_partition_desc *install,
147    struct disk_partitions *parts)
148{
149	return true;
150}
151
152/*
153 * hook called after upgrade() or install() has finished setting
154 * up the target disk but immediately before the user is given the
155 * ``disks are now set up'' message.
156 */
157int
158md_post_newfs(struct install_partition_desc *install)
159{
160	return 0;
161}
162
163int
164md_post_extract(struct install_partition_desc *install, bool upgrade)
165{
166	msg_display(MSG_setbootdevice);
167	process_menu(MENU_ok, NULL);
168
169	return 0;
170}
171
172void
173md_cleanup_install(struct install_partition_desc *install)
174{
175#ifndef DEBUG
176	enable_rc_conf();
177	add_rc_conf("wscons=YES\n");
178
179	/* Configure a single screen. */
180	run_program(RUN_CHROOT,
181		    "sed -an -e '/^screen/s/^/#/;/^mux/s/^/#/;"
182		    "H;$!d;g;w /etc/wscons.conf' /etc/wscons.conf");
183
184#endif
185}
186
187int
188md_pre_update(struct install_partition_desc *install)
189{
190	return 1;
191}
192
193/* Upgrade support */
194int
195md_update(struct install_partition_desc *install)
196{
197	md_post_newfs(install);
198	return 1;
199}
200
201/*
202 * Clears the disk's first sector by writing all zeros over it.
203 * Returns 0 on success, -1 on failure.  Leaves the disk's path in
204 * the output diskpath buffer for further usage in error messages.
205 */
206static int
207clear_mbr(const char *disk, char *diskpath, size_t diskpathlen)
208{
209	int fd;
210	char sector[512];
211
212	fd = opendisk(disk, O_WRONLY, diskpath, diskpathlen, 0);
213	if (fd < 0)
214		return -1;
215
216	memset(sector, 0, sizeof(sector));
217	if (pwrite(fd, &sector, sizeof(sector), 0) < 0) {
218		close(fd);
219		return -1;
220	}
221
222	close(fd);
223	return 0;
224}
225
226int
227md_pre_mount(struct install_partition_desc *install, size_t ndx)
228{
229	return 0;
230}
231
232/* returns false if no write-back of parts is required */
233bool
234md_mbr_update_check(struct disk_partitions *parts, mbr_info_t *mbri)
235{
236	return false;
237}
238
239#ifdef HAVE_GPT
240/*
241 * New GPT partitions have been written, update bootloader or remember
242 * data untill needed in md_post_newfs
243 */
244bool
245md_gpt_post_write(struct disk_partitions *parts, part_id root_id,
246    bool root_is_new, part_id efi_id, bool efi_is_new)
247{
248	return true;
249}
250#endif
251
252bool
253md_parts_use_wholedisk(struct disk_partitions *parts)
254{
255	return parts_use_wholedisk(parts, 0, NULL);
256}
257