sys/arch/hpcmips/stand/libsa/winfs.c

   1 /*      $NetBSD: winfs.c,v 1.4 2009/03/14 15:36:07 dsl Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1999 Shin Takemura.
   5  * All rights reserved.
   6  *
   7  * This software is part of the PocketBSD.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by the PocketBSD project
  20  *      and its contributors.
  21  * 4. Neither the name of the project nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  *
  37  */
  38 #define STANDALONE_WINDOWS_SIDE
  39 #include <stand.h>
  40 #include <winfs.h>
  41
  42 #define MAXPATHLEN 1024
  43
  44 /*
  45  *  file system specific context.
  46  */
  47 struct winfs {
  48         HANDLE  hDevice;
  49 };
  50
  51
  52 int
  53 win_open(char *path, struct open_file *f)
  54 {
  55         TCHAR *wpath = (TCHAR*)path;
  56         struct winfs *fsdata;
  57
  58         fsdata = (struct winfs *)alloc(sizeof(*fsdata));
  59         if (!fsdata) {
  60                 return (ENOMEM);
  61         }
  62
  63         win_printf(TEXT("open(%s)\n"), wpath);
  64         fsdata->hDevice = CreateFile(wpath, GENERIC_READ, 0, NULL,
  65                                     OPEN_EXISTING, 0, NULL);
  66         if (fsdata->hDevice == INVALID_HANDLE_VALUE) {
  67                 win_printf(TEXT("can't open %s.\n"), wpath);
  68                 dealloc(fsdata, sizeof(*fsdata));
  69                 return (EIO);   /* XXX, We shuld check GetLastError(). */
  70         }
  71
  72         f->f_fsdata = (void *)fsdata;
  73
  74         return (0);
  75 }
  76
  77
  78 int
  79 win_close(struct open_file *f)
  80 {
  81         struct winfs *fsdata = (struct winfs *) f->f_fsdata;
  82
  83         if (fsdata->hDevice != INVALID_HANDLE_VALUE) {
  84                 CloseHandle(fsdata->hDevice);
  85         }
  86         dealloc(fsdata, sizeof(*fsdata));
  87
  88         return (0);
  89 }
  90
  91
  92 int
  93 win_read(struct open_file *f, void *addr, size_t size, size_t *resid)
  94         /* resid:        out */
  95 {
  96         struct winfs *fsdata = (struct winfs *) f->f_fsdata;
  97         DWORD read_len;
  98
  99         while (size > 0) {
 100                 if (!ReadFile(fsdata->hDevice,
 101                               (u_char*)addr, size,
 102                               &read_len, NULL)) {
 103                         win_printf(TEXT("ReadFile() failed.\n"));
 104                 }
 105
 106                 if (read_len == 0)
 107                         break;  /* EOF */
 108
 109                 (unsigned long)addr += read_len;
 110                 size -= read_len;
 111         }
 112
 113         if (resid)
 114                 *resid = size;
 115         return (0);
 116 }
 117
 118 int
 119 win_write(struct open_file *f, void *start, size_t size, size_t *resid)
 120         /* resid:        out */
 121 {
 122         return (EROFS); /* XXX */
 123 }
 124
 125
 126 int
 127 win_stat(struct open_file *f, struct stat *sb)
 128 {
 129         sb->st_mode = 0444;
 130         sb->st_nlink = 1;
 131         sb->st_uid = 0;
 132         sb->st_gid = 0;
 133         sb->st_size = -1;
 134         return (0);
 135 }
 136
 137 off_t
 138 win_seek(struct open_file *f, off_t offset, int whence)
 139 {
 140         struct winfs *fsdata = (struct winfs *) f->f_fsdata;
 141         DWORD dwPointer;
 142         int winwhence;
 143
 144         switch (whence) {
 145         case SEEK_SET:
 146                 winwhence = FILE_BEGIN;
 147                 break;
 148         case SEEK_CUR:
 149                 winwhence = FILE_CURRENT;
 150                 break;
 151         case SEEK_END:
 152                 winwhence = FILE_END;
 153                 break;
 154         default:
 155                 errno = EOFFSET;
 156                 return (-1);
 157         }
 158
 159         dwPointer = SetFilePointer(fsdata->hDevice, offset, NULL, winwhence);
 160         if (dwPointer == 0xffffffff) {
 161                 errno = EINVAL; /* XXX, We shuld check GetLastError(). */
 162                 return (-1);
 163         }
 164
 165         return (0);
 166 }