1/*	$OpenBSD: installboot.c,v 1.16 2022/11/08 12:08:53 kn Exp $	*/
2
3/*
4 * Copyright (c) 2012, 2013 Joel Sing <jsing@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include <err.h>
20#include <fcntl.h>
21#include <stdio.h>
22#include <stdlib.h>
23#include <string.h>
24#include <unistd.h>
25#include <util.h>
26
27#include "installboot.h"
28
29int	nowrite;
30int	prepare;
31int	stages;
32int	verbose;
33
34char	*root;
35char	*stage1;
36char	*stage2;
37
38static __dead void
39usage(void)
40{
41	fprintf(stderr, "usage:\t%1$s [-nv] [-r root] disk [stage1%2$s]\n"
42	    "\t%1$s [-nv] -p disk\n",
43	    getprogname(), (stages >= 2) ? " [stage2]" : "");
44
45	exit(1);
46}
47
48int
49main(int argc, char **argv)
50{
51	char *dev, *realdev;
52	int devfd, opt;
53
54	md_init();
55
56	while ((opt = getopt(argc, argv, "npr:v")) != -1) {
57		switch (opt) {
58		case 'n':
59			nowrite = 1;
60			break;
61		case 'p':
62			prepare = 1;
63			break;
64		case 'r':
65			root = optarg;
66			break;
67		case 'v':
68			verbose = 1;
69			break;
70		default:
71			usage();
72		}
73	}
74
75	argc -= optind;
76	argv += optind;
77
78	if (argc < 1 || argc > stages + 1)
79		usage();
80	if (prepare && (root != NULL || argc > 1))
81		usage();
82
83	dev = argv[0];
84	if (argc > 1)
85		stage1 = argv[1];
86	if (argc > 2)
87		stage2 = argv[2];
88
89	if ((devfd = opendev(dev, (nowrite ? O_RDONLY : O_RDWR), OPENDEV_PART,
90	    &realdev)) == -1)
91		err(1, "open: %s", realdev);
92
93	if (prepare) {
94#if SOFTRAID
95		sr_prepareboot(devfd, dev);
96#else
97		md_prepareboot(devfd, realdev);
98#endif
99		return 0;
100	}
101
102	/* Prefix stages with root, unless they were user supplied. */
103	if (root == NULL)
104		root = "/";
105	if (verbose)
106		fprintf(stderr, "Using %s as root\n", root);
107	if (argc <= 1 && stage1 != NULL) {
108		stage1 = fileprefix(root, stage1);
109		if (stage1 == NULL)
110			exit(1);
111	}
112	if (argc <= 2 && stage2 != NULL) {
113		stage2 = fileprefix(root, stage2);
114		if (stage2 == NULL)
115			exit(1);
116	}
117
118        if (verbose) {
119		fprintf(stderr, "%s bootstrap on %s\n",
120		    (nowrite ? "would install" : "installing"), realdev);
121		if (stage1 || stage2) {
122			if (stage1)
123				fprintf(stderr, "using first-stage %s", stage1);
124			if (stage2)
125				fprintf(stderr, ", second-stage %s", stage2);
126			fprintf(stderr, "\n");
127		}
128	}
129
130	md_loadboot();
131
132#ifdef SOFTRAID
133	sr_installboot(devfd, dev);
134#else
135	md_installboot(devfd, realdev);
136#endif
137
138	return 0;
139}
140