1 /* $NetBSD: winfs.c,v 1.5 2009/03/14 21:04:09 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
win_open(char * path,struct open_file * f)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
win_close(struct open_file * f)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
win_read(struct open_file * f,void * addr,size_t size,size_t * resid)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
win_write(struct open_file * f,void * start,size_t size,size_t * resid)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
win_stat(struct open_file * f,struct stat * sb)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
win_seek(struct open_file * f,off_t offset,int whence)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 }
167