1/*	$NetBSD: geom.c,v 1.4 2021/01/31 22:45:46 rillig Exp $	*/
2
3/*
4 * Copyright (c) 1995, 1997 Jason R. Thorpe.
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 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed for the NetBSD Project
18 *	by Jason R. Thorpe.
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35/* Modified by Philip A. Nelson for use in sysinst. */
36
37#include <sys/param.h>
38#include <sys/ioctl.h>
39#include <fcntl.h>
40#include <unistd.h>
41#include <util.h>
42#include <stdint.h>
43#include <errno.h>
44#include "partutil.h"
45
46#include "defs.h"
47
48bool
49disk_ioctl(const char *disk, unsigned long cmd, void *d)
50{
51	char diskpath[MAXPATHLEN];
52	int fd;
53	int sv_errno;
54
55	/* Open the disk. */
56	fd = opendisk(disk, O_RDONLY, diskpath, sizeof(diskpath), 0);
57	if (fd == -1)
58		return false;
59
60	if (ioctl(fd, cmd, d) == -1) {
61		sv_errno = errno;
62		(void)close(fd);
63		errno = sv_errno;
64		return false;
65	}
66	(void)close(fd);
67	return true;
68}
69
70bool
71get_wedge_list(const char *disk, struct dkwedge_list *dkwl)
72{
73	struct dkwedge_info *dkw;
74	memset(dkwl, 0, sizeof(*dkwl));
75
76	for (;;) {
77		if (!disk_ioctl(disk, DIOCLWEDGES, dkwl))
78			goto out;
79		if (dkwl->dkwl_nwedges == dkwl->dkwl_ncopied)
80			return true;
81		dkwl->dkwl_bufsize = dkwl->dkwl_nwedges * sizeof(*dkw);
82		dkw = realloc(dkwl->dkwl_buf, dkwl->dkwl_bufsize);
83		if (dkw == NULL)
84			goto out;
85		dkwl->dkwl_buf = dkw;
86	}
87out:
88	free(dkwl->dkwl_buf);
89	return false;
90}
91
92bool
93get_wedge_info(const char *disk, struct dkwedge_info *dkw)
94{
95
96	return disk_ioctl(disk, DIOCGWEDGEINFO, dkw);
97}
98
99bool
100get_disk_geom(const char *disk, struct disk_geom *d)
101{
102	char buf[MAXPATHLEN];
103	int fd, error;
104
105	if ((fd = opendisk(disk, O_RDONLY, buf, sizeof(buf), 0)) == -1)
106		return false;
107
108	error = getdiskinfo(disk, fd, NULL, d, NULL);
109	close(fd);
110	if (error < 0) {
111		errno = error;
112		return false;
113	}
114	return true;
115}
116
117bool
118get_label_geom(const char *disk, struct disklabel *l)
119{
120
121	return disk_ioctl(disk, DIOCGDINFO, l);
122}
123