sys/arch/hpc/stand/hpcboot/file_ufs.cpp

   1 /*      $NetBSD: file_ufs.cpp,v 1.3 2006/03/05 04:05:39 uwe Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by UCHIYAMA Yasushi.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <machine/cdefs.h>
  33 #include <machine/types.h>
  34 #include <machine/int_types.h>
  35
  36 #include <file.h>
  37 #include <file_ufs.h>
  38 #include <console.h>
  39
  40 __BEGIN_DECLS
  41 #include <stand.h>
  42 #include <lib/libsa/ufs.h>
  43 #include <winblk.h>
  44 __END_DECLS
  45
  46 UfsFile::UfsFile(Console *&cons)
  47         : File(cons)
  48 {
  49         static struct devsw devsw[] = {
  50                 {"winblk", winblkstrategy, winblkopen,
  51                  winblkclose, winblkioctl },
  52         };
  53
  54         _f = static_cast<struct open_file *>(malloc(sizeof(struct open_file)));
  55         _f->f_dev = devsw;
  56         _debug = TRUE;
  57
  58         DPRINTF((TEXT("FileManager: UFS\n")));
  59 }
  60
  61 UfsFile::~UfsFile(void)
  62 {
  63         free(_f);
  64 }
  65
  66 BOOL
  67 UfsFile::setRoot(TCHAR *drive)
  68 {
  69         char name[MAX_PATH];
  70         int unit;
  71
  72         _to_ascii(name, drive, MAX_PATH);
  73         if ('1' <= name[0] && name[0] <= '9' && name[1] == ':')
  74                 unit = name[0] - '0';
  75         else
  76                 unit = 1;
  77
  78         winblkopen(_f, "DSK", unit, 0);
  79
  80         return TRUE;
  81 }
  82
  83 BOOL
  84 UfsFile::open(const TCHAR *name, uint32_t flags)
  85 {
  86         int error;
  87
  88         if (!_to_ascii(_ascii_filename, name, MAX_PATH))
  89                 return FALSE;
  90
  91         error = ufs_open(_ascii_filename, _f);
  92         DPRINTF((TEXT("open file \"%s\" "), name));
  93
  94         if (!error)
  95                 DPRINTF((TEXT("(%d byte).\n"), size()));
  96         else
  97                 DPRINTF((TEXT("failed.\n")));
  98
  99         return !error;
 100 }
 101
 102 size_t
 103 UfsFile::read(void *buf, size_t bytes, off_t ofs)
 104 {
 105         size_t sz;
 106
 107         if (ofs != -1)
 108                 ufs_seek(_f, ofs, SEEK_SET);
 109         ufs_read(_f, buf, bytes, &sz);
 110
 111         return bytes - sz;
 112 }
 113
 114 size_t
 115 UfsFile::write(const void *buf, size_t bytes, off_t ofs)
 116 {
 117         size_t sz;
 118
 119         if (ofs != -1)
 120                 ufs_seek(_f, ofs, SEEK_SET);
 121         ufs_write(_f,(void *) buf, bytes, &sz);
 122
 123         return bytes - sz;
 124 }
 125
 126 BOOL
 127 UfsFile::seek(off_t ofs)
 128 {
 129         ufs_seek(_f, ofs, SEEK_SET);
 130
 131         return TRUE;
 132 }
 133
 134 size_t
 135 UfsFile::size()
 136 {
 137         struct stat st;
 138
 139         ufs_stat(_f, &st);
 140
 141         return st.st_size;
 142 }
 143
 144 BOOL
 145 UfsFile::close()
 146 {
 147         return ufs_close(_f);
 148 }