1 /* $NetBSD: devopen.c,v 1.3 2009/07/20 04:59:03 kiyohara Exp $ */
2
3 /*-
4 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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 AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 /* __FBSDID("$FreeBSD: src/sys/boot/common/devopen.c,v 1.4 2003/08/25 23:30:41 obrien Exp $"); */
31
32 #include <lib/libsa/stand.h>
33 #include <lib/libsa/loadfile.h>
34
35 #include "bootstrap.h"
36
37 int
devopen(struct open_file * f,const char * fname,char ** file)38 devopen(struct open_file *f, const char *fname, char **file)
39 {
40 struct devdesc *dev;
41 int result;
42
43 if ((result = archsw.arch_getdev((void *)&dev, fname, (const char **) file)) == 0) { /* get the device */
44 /* point to device-specific data so that device open can use it */
45 f->f_devdata = dev;
46 if ((result = dev->d_dev->dv_open(f, dev)) == 0) { /* try to open it */
47 /* reference the devsw entry from the open_file structure */
48 f->f_dev = dev->d_dev;
49 } else {
50 free(dev); /* release the device descriptor */
51 }
52 }
53 return(result);
54 }
55
56 int
devclose(struct open_file * f)57 devclose(struct open_file *f)
58 {
59 if (f->f_devdata != NULL) {
60 free(f->f_devdata);
61 }
62 return(0);
63 }
64