72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/* $NetBSD: devopen.c,v 1.3 2006/04/05 21:30:29 bjh21 Exp $ */
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/*-
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* Copyright (c) 2001, 2006 Ben Harris
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/disklabel.h>
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#include <lib/libkern/libkern.h>
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#include <lib/libsa/stand.h>
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#include <riscosdisk.h>
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int
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devopen(struct open_file *f, const char *fname, char **file)
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{
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#ifdef LIBSA_SINGLE_FILESYSTEM
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/* We don't support any devices yet. */
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f->f_flags |= F_NODEV;
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*file = (char *)fname;
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return 0;
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#else
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char *p, *fsname;
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int part, drive, err, fslen;
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p = strchr(fname, ':');
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if (p == NULL || p == fname) return ENOENT;
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*file = p + 1;
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p--;
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if (p == fname) return ENOENT;
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if (islower((unsigned char)*p))
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part = *p-- - 'a';
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else
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part = RAW_PART;
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if (p == fname) return ENOENT;
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drive = 0;
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while (isdigit((unsigned char)*p) && p >= fname)
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drive = drive * 10 + *p-- - '0';
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if (p <= fname) return ENOENT;
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fslen = p + 1 - fname;
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fsname = alloc(fslen + 1);
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memcpy(fsname, fname, fslen);
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fsname[fslen] = 0;
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err = rodisk_open(f, fsname, drive, part);
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dealloc(fsname, fslen + 1);
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return err;
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#endif
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}
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