devopen.c revision 1.3 
1/*	$NetBSD: devopen.c,v 1.3 2000/01/16 03:07:24 takemura Exp $	*/
2
3/*-
4 * Copyright (c) 1999 Shin Takemura.
5 * All rights reserved.
6 *
7 * This software is part of the PocketBSD.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed by the PocketBSD project
20 *	and its contributors.
21 * 4. Neither the name of the project nor the names of its contributors
22 *    may be used to endorse or promote products derived from this software
23 *    without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 */
38#define STANDALONE_WINDOWS_SIDE
39#include <stand.h>
40#include <winblk.h>
41#include <winfs.h>
42#include <lib/libsa/ufs.h>
43
44extern int parsebootfile __P((const char *, char**, char**, unsigned int*,
45                              unsigned int*, const char**));
46
47struct devsw devsw[] = {
48	{"winblk", winblkstrategy, winblkopen, winblkclose, winblkioctl },
49};
50int ndevs = sizeof(devsw) / sizeof(struct devsw);
51
52static struct fs_ops winop = {
53        win_open, win_close, win_read, win_write, win_seek, win_stat
54};
55
56static struct fs_ops ufsop = {
57        ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek, ufs_stat
58};
59
60struct fs_ops   file_system[] = {
61	{ 0 },
62};
63int nfsys = 1;
64
65int
66parsebootfile(fnamexx, fsmode, devname, unit, partition, file)
67        const char     *fnamexx;
68        char          **fsmode; /* out */
69        char          **devname; /* out */
70        unsigned int   *unit, *partition; /* out */
71        const char    **file; /* out */
72{
73	TCHAR *fname = (TCHAR*)fnamexx;
74
75	if (fname[0] == TEXT('\\')) {
76	        *fsmode = "win";
77	        *devname = "";
78	        *unit = 0;
79	        *partition = 0;
80		*file = fname;
81	} else {
82		static char name[1024]; /* XXX */
83
84		if (wcstombs(name, (TCHAR*)fname, sizeof(name)) < 0) {
85			return (ENOENT);
86		}
87		if ('1' <= name[0] && name[0] <= '9' && name[1] == ':') {
88			*unit = name[0] - '0';
89			*file = &name[2];
90		} else {
91		        *unit = 1;
92			*file = name;
93		}
94	        *fsmode = "ufs";
95	        *devname = "DSK";
96	        *partition = 0;
97	}
98
99	return (0);
100}
101
102
103int
104devopen(f, fname, file)
105        struct open_file *f;
106        const char     *fname;
107        char          **file;
108{
109        char           *devname;
110        char           *fsmode;
111        unsigned int    unit, partition;
112        int             error;
113
114        if ((error = parsebootfile(fname, &fsmode, &devname, &unit,
115            &partition, (const char **) file)))
116                return (error);
117
118        if (!strcmp(fsmode, "win")) {
119                file_system[0] = winop;
120                f->f_flags |= F_NODEV;  /* handled by Windows */
121                return (0);
122	} else
123        if (!strcmp(fsmode, "ufs")) {
124                file_system[0] = ufsop;
125		f->f_dev = &devsw[0];	/* Windows block device. */
126                return (*f->f_dev->dv_open)(f, devname, unit, partition);
127	} else {
128                printf("no file system\n");
129                return (ENXIO);
130	}
131	/* NOTREACHED */
132}
133