sys/arch/macppc/stand/ofwboot/hfs.c

   1 /*      $NetBSD: hfs.c,v 1.2.22.3 2004/09/21 13:18:30 skrll Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2000 Tsubai Masanari.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/param.h>
  30 #include <lib/libkern/libkern.h>
  31 #include <lib/libsa/stand.h>
  32
  33 #include <openfirm.h>
  34 #include <hfs.h>
  35
  36 static int OF_fd;       /* XXX */
  37
  38 int
  39 hfs_open(const char *path, struct open_file *f)
  40 {
  41         int chosen;
  42         char bootpath[128], *cp;
  43
  44         if ((chosen = OF_finddevice("/chosen")) == -1)
  45                 return ENXIO;
  46         memset(bootpath, 0, sizeof bootpath);
  47         OF_getprop(chosen, "bootpath", bootpath, sizeof bootpath);
  48         cp = strrchr(bootpath, ',');
  49         if (cp == NULL)
  50                 return ENXIO;
  51
  52         strcpy(cp + 1, path);
  53         OF_fd = OF_open(bootpath);
  54         if (OF_fd == -1)
  55                 return ENOENT;
  56
  57         return 0;
  58 }
  59
  60 int
  61 hfs_close(struct open_file *f)
  62 {
  63         OF_close(OF_fd);
  64         return 0;
  65 }
  66
  67 int
  68 hfs_read(struct open_file *f, void *start, size_t size, size_t *resid)
  69 {
  70         int len;
  71
  72         len = OF_read(OF_fd, start, size);
  73         size -= len;
  74         if (resid)
  75                 *resid = size;
  76         return 0;
  77 }
  78
  79 int
  80 hfs_write(struct open_file *f, void *start, size_t size, size_t *resid)
  81 {
  82         printf("hfs_write\n");
  83         return ENXIO;
  84 }
  85
  86 off_t
  87 hfs_seek(struct open_file *f, off_t offset, int where)
  88 {
  89         switch (where) {
  90         case SEEK_SET:
  91                 return OF_seek(OF_fd, offset);
  92         case SEEK_CUR:
  93         case SEEK_END:
  94         default:
  95                 return -1;
  96         }
  97 }
  98
  99 int
 100 hfs_stat(struct open_file *f, struct stat *sb)
 101 {
 102         return 0;
 103 }