1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3 * Copyright (c) 2006 Marcel Moolenaar
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <stand.h>
29#include <string.h>
30#include <sys/disklabel.h>
31#include <sys/param.h>
32#include <bootstrap.h>
33#include <disk.h>
34
35#include <efi.h>
36#include <efilib.h>
37#include <efizfs.h>
38
39/*
40 * Point (dev) at an allocated device specifier for the device matching the
41 * path in (devspec). If it contains an explicit device specification,
42 * use that.  If not, use the default device.
43 */
44int
45efi_getdev(void **vdev, const char *devspec, const char **path)
46{
47	struct devdesc **dev = (struct devdesc **)vdev;
48	int rv;
49
50	/*
51	 * If it looks like this is just a path and no device, then
52	 * use the current device instead.
53	 */
54	if (devspec == NULL || *devspec == '/' || !strchr(devspec, ':')) {
55		rv = devparse(dev, getenv("currdev"), NULL);
56		if (rv == 0 && path != NULL)
57			*path = devspec;
58		return (rv);
59	}
60
61	return (devparse(dev, devspec, path));
62}
63