1*479ab7f0SSascha Wildner /*-
2*479ab7f0SSascha Wildner * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3*479ab7f0SSascha Wildner * All rights reserved.
4*479ab7f0SSascha Wildner *
5*479ab7f0SSascha Wildner * Redistribution and use in source and binary forms, with or without
6*479ab7f0SSascha Wildner * modification, are permitted provided that the following conditions
7*479ab7f0SSascha Wildner * are met:
8*479ab7f0SSascha Wildner * 1. Redistributions of source code must retain the above copyright
9*479ab7f0SSascha Wildner * notice, this list of conditions and the following disclaimer.
10*479ab7f0SSascha Wildner * 2. Redistributions in binary form must reproduce the above copyright
11*479ab7f0SSascha Wildner * notice, this list of conditions and the following disclaimer in the
12*479ab7f0SSascha Wildner * documentation and/or other materials provided with the distribution.
13*479ab7f0SSascha Wildner *
14*479ab7f0SSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15*479ab7f0SSascha Wildner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16*479ab7f0SSascha Wildner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*479ab7f0SSascha Wildner * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18*479ab7f0SSascha Wildner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*479ab7f0SSascha Wildner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*479ab7f0SSascha Wildner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*479ab7f0SSascha Wildner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22*479ab7f0SSascha Wildner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23*479ab7f0SSascha Wildner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24*479ab7f0SSascha Wildner * SUCH DAMAGE.
25*479ab7f0SSascha Wildner *
26*479ab7f0SSascha Wildner * $FreeBSD: src/sys/boot/common/devopen.c,v 1.4 2003/08/25 23:30:41 obrien Exp $
27*479ab7f0SSascha Wildner * $DragonFly: src/sys/boot/common/devopen.c,v 1.3 2003/11/10 06:08:31 dillon Exp $
28*479ab7f0SSascha Wildner */
29*479ab7f0SSascha Wildner
30*479ab7f0SSascha Wildner #include <stand.h>
31*479ab7f0SSascha Wildner #include <string.h>
32*479ab7f0SSascha Wildner
33*479ab7f0SSascha Wildner #include "bootstrap.h"
34*479ab7f0SSascha Wildner
35*479ab7f0SSascha Wildner /*
36*479ab7f0SSascha Wildner * Install f_dev and f_devinfo. Some devices uses the generic
37*479ab7f0SSascha Wildner * devdesc, others will replace it with their own and clear F_DEVDESC.
38*479ab7f0SSascha Wildner */
39*479ab7f0SSascha Wildner int
devopen(struct open_file * f,const char * fname,const char ** file)40*479ab7f0SSascha Wildner devopen(struct open_file *f, const char *fname, const char **file)
41*479ab7f0SSascha Wildner {
42*479ab7f0SSascha Wildner struct devdesc *dev;
43*479ab7f0SSascha Wildner int result;
44*479ab7f0SSascha Wildner
45*479ab7f0SSascha Wildner if ((result = archsw.arch_getdev((void *)&dev, fname, file)) == 0) { /* get the device */
46*479ab7f0SSascha Wildner /* point to device-specific data so that device open can use it */
47*479ab7f0SSascha Wildner f->f_flags |= F_DEVDESC;
48*479ab7f0SSascha Wildner f->f_devdata = dev;
49*479ab7f0SSascha Wildner if ((result = dev->d_dev->dv_open(f, dev)) == 0) { /* try to open it */
50*479ab7f0SSascha Wildner /* reference the devsw entry from the open_file structure */
51*479ab7f0SSascha Wildner f->f_dev = dev->d_dev;
52*479ab7f0SSascha Wildner } else {
53*479ab7f0SSascha Wildner devclose(f);
54*479ab7f0SSascha Wildner }
55*479ab7f0SSascha Wildner }
56*479ab7f0SSascha Wildner return(result);
57*479ab7f0SSascha Wildner }
58*479ab7f0SSascha Wildner
59*479ab7f0SSascha Wildner int
devclose(struct open_file * f)60*479ab7f0SSascha Wildner devclose(struct open_file *f)
61*479ab7f0SSascha Wildner {
62*479ab7f0SSascha Wildner if (f->f_flags & F_DEVDESC) {
63*479ab7f0SSascha Wildner if (f->f_devdata != NULL) {
64*479ab7f0SSascha Wildner free(f->f_devdata);
65*479ab7f0SSascha Wildner f->f_devdata = NULL;
66*479ab7f0SSascha Wildner }
67*479ab7f0SSascha Wildner f->f_flags &= ~F_DEVDESC;
68*479ab7f0SSascha Wildner }
69*479ab7f0SSascha Wildner return(0);
70*479ab7f0SSascha Wildner }
71*479ab7f0SSascha Wildner
72*479ab7f0SSascha Wildner void
devreplace(struct open_file * f,void * devdata)73*479ab7f0SSascha Wildner devreplace(struct open_file *f, void *devdata)
74*479ab7f0SSascha Wildner {
75*479ab7f0SSascha Wildner if (f->f_flags & F_DEVDESC) {
76*479ab7f0SSascha Wildner free(f->f_devdata);
77*479ab7f0SSascha Wildner f->f_flags &= ~F_DEVDESC;
78*479ab7f0SSascha Wildner }
79*479ab7f0SSascha Wildner f->f_devdata = devdata;
80*479ab7f0SSascha Wildner }
81