1/*	$NetBSD: devopen.c,v 1.2 2006/04/01 19:08:08 bjh21 Exp $	*/
2
3/*-
4 * Copyright (c) 2001, 2006 Ben Harris
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. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <sys/disklabel.h>
31#include <lib/libkern/libkern.h>
32#include <lib/libsa/stand.h>
33#include <riscosdisk.h>
34
35int
36devopen(struct open_file *f, const char *fname, char **file)
37{
38#ifdef LIBSA_SINGLE_FILESYSTEM
39
40	/* We don't support any devices yet. */
41	f->f_flags |= F_NODEV;
42	*file = (char *)fname;
43	return 0;
44#else
45	char *p, *fsname;
46	int part, drive, err, fslen;
47
48	p = strchr(fname, ':');
49	if (p == NULL || p == fname) return ENOENT;
50	*file = p + 1;
51	p--;
52	if (p == fname) return ENOENT;
53	if (islower((unsigned char)*p))
54		part = *p-- - 'a';
55	else
56		part = RAW_PART;
57	if (p == fname) return ENOENT;
58	drive = 0;
59	while (isdigit((unsigned char)*p) && p >= fname)
60		drive = drive * 10 + *p-- - '0';
61	if (p <= fname) return ENOENT;
62
63	fslen = p + 1 - fname;
64	fsname = alloc(fslen + 1);
65	memcpy(fsname, fname, fslen);
66	fsname[fslen] = 0;
67	err =  rodisk_open(f, fsname, drive, part);
68	dealloc(fsname, fslen + 1);
69	return err;
70#endif
71}
72