4 * Copyright 1998 Marcus Meissner
5 * Copyright 1998 Ulrich Weigand
6 * Copyright 1998 Patrik Stridvall
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include "wine/port.h"
30 #include <sys/types.h>
31 #ifdef HAVE_SYS_STAT_H
32 # include <sys/stat.h>
41 #include "kernel_private.h"
42 #include "wine/library.h"
43 #include "wine/unicode.h"
44 #include "wine/server.h"
45 #include "wine/debug.h"
47 WINE_DEFAULT_DEBUG_CHANNEL(vxd);
49 typedef BOOL (WINAPI *DeviceIoProc)(DWORD, LPVOID, DWORD, LPVOID, DWORD, LPDWORD, LPOVERLAPPED);
50 typedef DWORD (WINAPI *VxDCallProc)(DWORD, CONTEXT86 *);
61 struct vxdcall_service
69 #define MAX_VXD_MODULES 32
71 static struct vxd_module vxd_modules[MAX_VXD_MODULES];
73 static struct vxdcall_service vxd_services[] =
75 { {'v','m','m','.','v','x','d',0}, 0x0001, NULL, NULL },
76 { {'v','w','i','n','3','2','.','v','x','d',0}, 0x002a, NULL, NULL }
79 #define NB_VXD_SERVICES (sizeof(vxd_services)/sizeof(vxd_services[0]))
81 static CRITICAL_SECTION vxd_section;
82 static CRITICAL_SECTION_DEBUG critsect_debug =
85 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
86 0, 0, { 0, (DWORD)(__FILE__ ": vxd_section") }
88 static CRITICAL_SECTION vxd_section = { &critsect_debug, -1, 0, 0, 0, 0 };
91 /* create a file handle to represent a VxD, by opening a dummy file in the wineserver directory */
92 static HANDLE open_vxd_handle( LPCWSTR name )
94 const char *dir = wine_get_server_dir();
98 OBJECT_ATTRIBUTES attr;
102 len = MultiByteToWideChar( CP_UNIXCP, 0, dir, -1, NULL, 0 );
103 nameW.Length = (len + 1 + strlenW( name )) * sizeof(WCHAR);
104 nameW.MaximumLength = nameW.Length + sizeof(WCHAR);
105 if (!(nameW.Buffer = HeapAlloc( GetProcessHeap(), 0, nameW.Length )))
107 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
110 MultiByteToWideChar( CP_UNIXCP, 0, dir, -1, nameW.Buffer, len );
111 nameW.Buffer[len-1] = '/';
112 strcpyW( nameW.Buffer + len, name );
114 attr.Length = sizeof(attr);
115 attr.RootDirectory = 0;
117 attr.ObjectName = &nameW;
118 attr.SecurityDescriptor = NULL;
119 attr.SecurityQualityOfService = NULL;
121 status = NtCreateFile( &ret, 0, &attr, &io, NULL, 0,
122 FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN_IF,
123 FILE_SYNCHRONOUS_IO_ALERT, NULL, 0 );
127 SetLastError( RtlNtStatusToDosError(status) );
129 RtlFreeUnicodeString( &nameW );
133 /* retrieve the DeviceIoControl function for a Vxd given a file handle */
134 static DeviceIoProc get_vxd_proc( HANDLE handle )
137 DeviceIoProc ret = NULL;
140 status = wine_server_handle_to_fd( handle, 0, &fd, NULL );
143 SetLastError( RtlNtStatusToDosError(status) );
146 if (fstat( fd, &st ) == -1)
148 wine_server_release_fd( handle, fd );
149 SetLastError( ERROR_INVALID_HANDLE );
152 wine_server_release_fd( handle, fd );
154 RtlEnterCriticalSection( &vxd_section );
156 for (i = 0; i < MAX_VXD_MODULES; i++)
158 if (!vxd_modules[i].module) break;
159 if (vxd_modules[i].dev == st.st_dev && vxd_modules[i].ino == st.st_ino)
161 if (!(ret = vxd_modules[i].proc)) SetLastError( ERROR_INVALID_FUNCTION );
165 /* FIXME: Here we could go through the directory to find the VxD name and load it. */
166 /* Let's wait to find out if there are actually apps out there that try to share */
167 /* VxD handles between processes, before we go to the trouble of implementing it. */
168 ERR( "handle %p not found in module list, inherited from another process?\n", handle );
171 RtlLeaveCriticalSection( &vxd_section );
176 /* load a VxD and return a file handle to it */
177 HANDLE VXD_Open( LPCWSTR filenameW, DWORD access, SECURITY_ATTRIBUTES *sa )
179 static const WCHAR dotVxDW[] = {'.','v','x','d',0};
185 if (!(GetVersion() & 0x80000000)) /* there are no VxDs on NT */
187 SetLastError( ERROR_FILE_NOT_FOUND );
191 /* normalize the filename */
193 if (strlenW( filenameW ) >= sizeof(name)/sizeof(WCHAR) - 4 ||
194 strchrW( filenameW, '/' ) || strchrW( filenameW, '\\' ))
196 SetLastError( ERROR_FILE_NOT_FOUND );
199 strcpyW( name, filenameW );
201 p = strchrW( name, '.' );
202 if (!p) strcatW( name, dotVxDW );
203 else if (strcmpW( p, dotVxDW )) /* existing extension has to be .vxd */
205 SetLastError( ERROR_FILE_NOT_FOUND );
209 /* try to load the module first */
211 if (!(module = LoadLibraryW( name )))
213 FIXME( "Unknown/unsupported VxD %s. Try setting Windows version to 'nt40' or 'win31'.\n",
215 SetLastError( ERROR_FILE_NOT_FOUND );
219 /* register the module in the global list if necessary */
221 RtlEnterCriticalSection( &vxd_section );
223 for (i = 0; i < MAX_VXD_MODULES; i++)
225 if (vxd_modules[i].module == module)
227 handle = vxd_modules[i].handle;
228 goto done; /* already registered */
230 if (!vxd_modules[i].module) /* new one, register it */
235 /* get a file handle to the dummy file */
236 if (!(handle = open_vxd_handle( name )))
238 FreeLibrary( module );
241 wine_server_handle_to_fd( handle, 0, &fd, NULL );
242 if (fstat( fd, &st ) != -1)
244 vxd_modules[i].dev = st.st_dev;
245 vxd_modules[i].ino = st.st_ino;
247 vxd_modules[i].module = module;
248 vxd_modules[i].handle = handle;
249 vxd_modules[i].proc = (DeviceIoProc)GetProcAddress( module, "DeviceIoControl" );
250 wine_server_release_fd( handle, fd );
255 ERR("too many open VxD modules, please report\n" );
256 CloseHandle( handle );
257 FreeLibrary( module );
261 RtlLeaveCriticalSection( &vxd_section );
262 if (!DuplicateHandle( GetCurrentProcess(), handle, GetCurrentProcess(), &handle, 0,
263 (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle),
264 DUP_HANDLE_SAME_ACCESS ))
270 /***********************************************************************
271 * VxDCall0 (KERNEL32.1)
272 * VxDCall1 (KERNEL32.2)
273 * VxDCall2 (KERNEL32.3)
274 * VxDCall3 (KERNEL32.4)
275 * VxDCall4 (KERNEL32.5)
276 * VxDCall5 (KERNEL32.6)
277 * VxDCall6 (KERNEL32.7)
278 * VxDCall7 (KERNEL32.8)
279 * VxDCall8 (KERNEL32.9)
281 void WINAPI __regs_VxDCall( DWORD service, CONTEXT86 *context )
284 VxDCallProc proc = NULL;
286 RtlEnterCriticalSection( &vxd_section );
287 for (i = 0; i < NB_VXD_SERVICES; i++)
289 if (HIWORD(service) != vxd_services[i].service) continue;
290 if (!vxd_services[i].module) /* need to load it */
292 if ((vxd_services[i].module = LoadLibraryW( vxd_services[i].name )))
293 vxd_services[i].proc = (VxDCallProc)GetProcAddress( vxd_services[i].module, "VxDCall" );
295 proc = vxd_services[i].proc;
298 RtlLeaveCriticalSection( &vxd_section );
300 if (proc) context->Eax = proc( service, context );
303 FIXME( "Unknown/unimplemented VxD (%08lx)\n", service);
304 context->Eax = 0xffffffff; /* FIXME */
307 #ifdef DEFINE_REGS_ENTRYPOINT
308 DEFINE_REGS_ENTRYPOINT( VxDCall, 4, 4 );
312 /***********************************************************************
313 * OpenVxDHandle (KERNEL32.@)
315 * This function is supposed to return the corresponding Ring 0
316 * ("kernel") handle for a Ring 3 handle in Win9x.
317 * Evidently, Wine will have problems with this. But we try anyway,
320 HANDLE WINAPI OpenVxDHandle(HANDLE hHandleRing3)
322 FIXME( "(%p), stub! (returning Ring 3 handle instead of Ring 0)\n", hHandleRing3);
327 /****************************************************************************
328 * DeviceIoControl (KERNEL32.@)
329 * This is one of those big ugly nasty procedure which can do
330 * a million and one things when it comes to devices. It can also be
331 * used for VxD communication.
333 * A return value of FALSE indicates that something has gone wrong which
334 * GetLastError can decipher.
336 BOOL WINAPI DeviceIoControl(HANDLE hDevice, DWORD dwIoControlCode,
337 LPVOID lpvInBuffer, DWORD cbInBuffer,
338 LPVOID lpvOutBuffer, DWORD cbOutBuffer,
339 LPDWORD lpcbBytesReturned,
340 LPOVERLAPPED lpOverlapped)
344 TRACE( "(%p,%lx,%p,%ld,%p,%ld,%p,%p)\n",
345 hDevice,dwIoControlCode,lpvInBuffer,cbInBuffer,
346 lpvOutBuffer,cbOutBuffer,lpcbBytesReturned,lpOverlapped );
348 /* Check if this is a user defined control code for a VxD */
350 if( HIWORD( dwIoControlCode ) == 0 )
352 DeviceIoProc proc = get_vxd_proc( hDevice );
353 if (proc) return proc( dwIoControlCode, lpvInBuffer, cbInBuffer,
354 lpvOutBuffer, cbOutBuffer, lpcbBytesReturned, lpOverlapped );
358 /* Not a VxD, let ntdll handle it */
362 status = NtDeviceIoControlFile(hDevice, lpOverlapped->hEvent,
363 NULL, NULL, (PIO_STATUS_BLOCK)lpOverlapped,
364 dwIoControlCode, lpvInBuffer, cbInBuffer,
365 lpvOutBuffer, cbOutBuffer);
366 if (lpcbBytesReturned) *lpcbBytesReturned = lpOverlapped->InternalHigh;
370 IO_STATUS_BLOCK iosb;
372 status = NtDeviceIoControlFile(hDevice, NULL, NULL, NULL, &iosb,
373 dwIoControlCode, lpvInBuffer, cbInBuffer,
374 lpvOutBuffer, cbOutBuffer);
375 if (lpcbBytesReturned) *lpcbBytesReturned = iosb.Information;
377 if (status) SetLastError( RtlNtStatusToDosError(status) );