1 /* $NetBSD: devopen.c,v 1.3 2006/04/05 21:30:29 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
35 int
devopen(struct open_file * f,const char * fname,char ** file)36 devopen(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