1/*	$NetBSD: newdisk.c,v 1.9 2011/05/04 11:44:25 tsutsui Exp $	*/
2
3/*-
4 * Copyright (c) 1999 Minoura Makoto
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28/*
29 * Create the disk mark for x68k SCSI IPL.
30 * It used to be a shell/awk script, but is rewritten in order to be fit with
31 * the install kernel.
32 *
33 * Usage: /usr/mdec/newdisk [-vnfc] [-m /usr/mdec/mboot] /dev/rsd?c
34 */
35
36#include <stdio.h>
37#include <stdlib.h>
38#include <string.h>
39#include <err.h>
40#include <fcntl.h>
41#include <unistd.h>
42#include <util.h>
43#include <sys/param.h>
44#include <sys/disklabel.h>
45#include <sys/dkio.h>
46#include <sys/ioctl.h>
47
48const char *mboot = MBOOT;
49char dev[MAXPATHLEN];
50char buf[4096 + 1];
51
52const char copyright[] = "NetBSD/x68k SCSI Primary Boot. ";
53
54int verbose = 0, dry_run = 0, force = 0, check_only = 0, mark_only = 0;
55
56void usage(void) __attribute__((__noreturn__));
57int main(int, char *[]);
58
59void
60usage(void)
61{
62	fprintf(stderr,
63		"Usage: %s [-v] [-n] [-f] [-c] [-m /usr/mdec/mboot] "
64		"/dev/rsdXc\n", getprogname());
65	exit(1);
66	/* NOTREACHED */
67}
68
69int
70main(int argc, char *argv[])
71{
72	int ch;
73	int fd;
74	struct disklabel label;
75
76	while ((ch = getopt(argc, argv, "vnfcm:p")) != -1) {
77		switch (ch) {
78		case 'v':
79			verbose = 1;
80			break;
81		case 'n':
82			dry_run = 1;
83			break;
84		case 'f':
85			force = 1;
86			break;
87		case 'c':
88			check_only = 1;
89			break;
90		case 'm':
91			mboot = optarg;
92			break;
93		case 'p':
94			mark_only = 1;
95			break;
96		default:
97			usage();
98		}
99	}
100	argc -= optind;
101	argv += optind;
102
103	if (argc != 1)
104		usage();
105
106	fd = opendisk(argv[0], O_RDONLY, dev, MAXPATHLEN, 0);
107	if (fd < 0)
108		err(1, "opening %s", dev);
109	if (access(mboot, R_OK) < 0)
110		err(1, "checking %s", mboot);
111
112	if (read(fd, buf, 512) < 0)
113		err(1, "reading %s", dev);
114	if (strncmp(buf, "X68SCSI1", 8) == 0 && !force)
115		errx(1, "%s is already marked.  "
116		        "Use -f to overwrite the existing mark.", dev);
117	if (check_only)
118		return 0;
119
120	if (verbose)
121		fprintf(stderr, "Inspecting %s... ", dev);
122
123	if (ioctl(fd, DIOCGDINFO, &label) < 0)
124		err(1, "inspecting %s", dev);
125	close(fd);
126	if (label.d_secsize != 512)
127		errx(1, "This type of disk is not supported by NetBSD.");
128
129	if (verbose)
130		fprintf(stderr, "total number of sector is %d.\n",
131			label.d_secperunit);
132
133	if (verbose)
134		fprintf(stderr, "Building disk mark... ");
135	memset(buf, 0, 3072);
136#define n label.d_secperunit
137	sprintf(buf, "X68SCSI1%c%c%c%c%c%c%c%c%s",
138		2, 0,
139		(n/16777216)%256, (n/65536)%256, (n/256)%256, n%256,
140		1, 0, copyright);
141#undef n
142	if (verbose)
143		fprintf(stderr, "done.\n");
144
145	if (verbose)
146		fprintf(stderr, "Merging %s... ", mboot);
147	fd = open(mboot, O_RDONLY);
148	if (fd < 0)
149		err(1, "opening %s", mboot);
150	if (read(fd, buf+1024, 1024) < 0)
151		err(1, "reading %s", mboot);
152	close(fd);
153	if (verbose)
154		fprintf(stderr, "done.\n");
155
156	if (!mark_only) {
157		if (verbose)
158			fprintf(stderr,
159				"Creating an empty partition table... ");
160#define n (label.d_secperunit/2)
161		sprintf(buf+2048,
162			"X68K%c%c%c%c%c%c%c%c%c%c%c%c",
163			0, 0, 0, 32,
164			(n/16777215)%256, (n/65536)%256, (n/256)%256, n%256,
165			(n/16777215)%256, (n/65536)%256, (n/256)%256, n%256);
166#undef n
167		if (verbose)
168			fprintf(stderr, "done.\n");
169	}
170
171	if (dry_run) {
172		char filename[MAXPATHLEN] = "/tmp/diskmarkXXXXX";
173		fd = mkstemp(filename);
174		if (fd < 0)
175			err(1, "opening %s", filename);
176		if (write(fd, buf, 4096) < 0)
177			err(1, "writing %s", filename);
178		close(fd);
179		fprintf(stderr, "Disk mark is kept in %s.\n", filename);
180	} else {
181		int mode = 1;
182
183		if (verbose)
184			fprintf(stderr, "Writing... ");
185		fd = open(dev, O_WRONLY);
186		if (fd < 0)
187			err(1, "opening %s", dev);
188		if (ioctl(fd, DIOCWLABEL, (char *)&mode) < 0)
189			err(1, "DIOCWLABEL %s", dev);
190		if (write(fd, buf, 4096) != 4096) {
191			mode = 0;
192			ioctl(fd, DIOCWLABEL, (char *)&mode);
193			err(1, "DIOCWLABEL %s", dev);
194		}
195		ioctl(fd, DIOCWLABEL, (char *)&mode);
196		if (verbose)
197			fprintf(stderr, "done.\n");
198		close(fd);
199	}
200
201	return 0;
202}
203