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