2 * Mount manager service implementation
4 * Copyright 2008 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 #define NONAMELESSUNION
25 #define NONAMELESSSTRUCT
28 #define WIN32_NO_STATUS
35 #include "ddk/mountmgr.h"
36 #include "wine/library.h"
37 #include "wine/unicode.h"
38 #include "wine/debug.h"
40 WINE_DEFAULT_DEBUG_CHANNEL(mountmgr);
42 #define MAX_DOS_DRIVES 26
43 #define MAX_MOUNT_POINTS (2 * MAX_DOS_DRIVES)
45 /* extra info for disk devices, stored in DeviceExtension */
46 struct disk_device_info
48 UNICODE_STRING name; /* device name */
53 DEVICE_OBJECT *device;
54 UNICODE_STRING link; /* DOS device symlink */
55 void *id; /* device unique id */
59 static struct mount_point mount_points[MAX_MOUNT_POINTS];
60 static HKEY mount_key;
62 static inline UNICODE_STRING *get_device_name( DEVICE_OBJECT *dev )
64 return &((struct disk_device_info *)dev->DeviceExtension)->name;
67 /* read a Unix symlink; returned buffer must be freed by caller */
68 static char *read_symlink( const char *path )
75 if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, size )))
77 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
80 ret = readlink( path, buffer, size );
83 RtlFreeHeap( GetProcessHeap(), 0, buffer );
91 RtlFreeHeap( GetProcessHeap(), 0, buffer );
96 static NTSTATUS create_disk_device( DRIVER_OBJECT *driver, DWORD type, DEVICE_OBJECT **dev_obj )
98 static const WCHAR harddiskW[] = {'\\','D','e','v','i','c','e',
99 '\\','H','a','r','d','d','i','s','k','V','o','l','u','m','e','%','u',0};
100 static const WCHAR cdromW[] = {'\\','D','e','v','i','c','e','\\','C','d','R','o','m','%','u',0};
101 static const WCHAR floppyW[] = {'\\','D','e','v','i','c','e','\\','F','l','o','p','p','y','%','u',0};
107 struct disk_device_info *info;
111 case DRIVE_REMOVABLE:
120 first = 1; /* harddisk volumes start counting from 1 */
124 name.MaximumLength = (strlenW(format) + 10) * sizeof(WCHAR);
125 name.Buffer = RtlAllocateHeap( GetProcessHeap(), 0, name.MaximumLength );
126 for (i = first; i < 32; i++)
128 sprintfW( name.Buffer, format, i );
129 name.Length = strlenW(name.Buffer) * sizeof(WCHAR);
130 status = IoCreateDevice( driver, sizeof(*info), &name, 0, 0, FALSE, dev_obj );
131 if (status != STATUS_OBJECT_NAME_COLLISION) break;
135 info = (*dev_obj)->DeviceExtension;
140 FIXME( "IoCreateDevice %s got %x\n", debugstr_w(name.Buffer), status );
141 RtlFreeUnicodeString( &name );
147 static NTSTATUS add_mount_point( DRIVER_OBJECT *driver, DWORD type, int drive,
148 const void *id, unsigned int id_len )
150 static const WCHAR driveW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','%','c',':',0};
151 static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',
152 '%','0','8','x','-','%','0','4','x','-','%','0','4','x','-',
153 '%','0','2','x','%','0','2','x','-','%','0','2','x','%','0','2','x',
154 '%','0','2','x','%','0','2','x','%','0','2','x','%','0','2','x','}',0};
155 WCHAR *drive_link, *volume_link;
159 struct mount_point *mount_drive = NULL, *mount_volume = NULL;
161 /* find two free mount points */
163 for (i = 0; i < MAX_MOUNT_POINTS; i++)
165 if (mount_points[i].device) continue;
168 mount_drive = &mount_points[i];
171 mount_volume = &mount_points[i];
174 if (!mount_volume) return STATUS_NO_MEMORY;
176 /* create the volume */
178 memset( &guid, 0, sizeof(guid) ); /* FIXME */
179 guid.Data4[7] = 'A' + drive;
181 drive_link = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(driveW) );
182 volume_link = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(volumeW) );
183 sprintfW( drive_link, driveW, 'A' + drive );
184 sprintfW( volume_link, volumeW, guid.Data1, guid.Data2, guid.Data3,
185 guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
186 guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
188 RtlInitUnicodeString( &mount_drive->link, drive_link );
189 RtlInitUnicodeString( &mount_volume->link, volume_link );
190 status = create_disk_device( driver, type, &mount_drive->device );
193 RtlFreeUnicodeString( &mount_drive->link );
194 RtlFreeUnicodeString( &mount_volume->link );
198 mount_volume->device = mount_drive->device; /* FIXME: incr ref count */
199 mount_drive->id = RtlAllocateHeap( GetProcessHeap(), 0, id_len );
200 mount_drive->id_len = id_len;
201 memcpy( mount_drive->id, id, id_len );
202 mount_volume->id = RtlAllocateHeap( GetProcessHeap(), 0, id_len );
203 mount_volume->id_len = id_len;
204 memcpy( mount_volume->id, id, id_len );
206 IoCreateSymbolicLink( &mount_drive->link, get_device_name(mount_drive->device) );
207 IoCreateSymbolicLink( &mount_volume->link, get_device_name(mount_volume->device) );
209 TRACE( "created device %s symlinks %s %s\n", debugstr_w(get_device_name(mount_drive->device)->Buffer),
210 debugstr_w(mount_drive->link.Buffer), debugstr_w(mount_volume->link.Buffer) );
212 RegSetValueExW( mount_key, mount_drive->link.Buffer, 0, REG_BINARY,
213 mount_drive->id, mount_drive->id_len );
214 RegSetValueExW( mount_key, mount_volume->link.Buffer, 0, REG_BINARY,
215 mount_volume->id, mount_volume->id_len );
217 return STATUS_SUCCESS;
220 /* check if a given mount point matches the requested specs */
221 static BOOL matching_mount_point( const struct mount_point *mount, const MOUNTMGR_MOUNT_POINT *spec )
223 if (spec->SymbolicLinkNameOffset)
225 const WCHAR *name = (const WCHAR *)((const char *)spec + spec->SymbolicLinkNameOffset);
226 if (spec->SymbolicLinkNameLength != mount->link.Length) return FALSE;
227 if (memicmpW( name, mount->link.Buffer, mount->link.Length/sizeof(WCHAR)))
230 if (spec->DeviceNameOffset)
232 const WCHAR *name = (const WCHAR *)((const char *)spec + spec->DeviceNameOffset);
233 const UNICODE_STRING *dev_name = get_device_name( mount->device );
234 if (spec->DeviceNameLength != dev_name->Length) return FALSE;
235 if (memicmpW( name, dev_name->Buffer, dev_name->Length/sizeof(WCHAR)))
238 if (spec->UniqueIdOffset)
240 const void *id = ((const char *)spec + spec->UniqueIdOffset);
241 if (spec->UniqueIdLength != mount->id_len) return FALSE;
242 if (memcmp( id, mount->id, mount->id_len )) return FALSE;
247 /* implementation of IOCTL_MOUNTMGR_QUERY_POINTS */
248 static NTSTATUS query_mount_points( const void *in_buff, SIZE_T insize,
249 void *out_buff, SIZE_T outsize, IO_STATUS_BLOCK *iosb )
251 UINT i, j, pos, size;
252 const MOUNTMGR_MOUNT_POINT *input = in_buff;
253 MOUNTMGR_MOUNT_POINTS *info = out_buff;
254 UNICODE_STRING *dev_name;
257 if (input->SymbolicLinkNameOffset + input->SymbolicLinkNameLength > insize ||
258 input->UniqueIdOffset + input->UniqueIdLength > insize ||
259 input->DeviceNameOffset + input->DeviceNameLength > insize ||
260 input->SymbolicLinkNameOffset + input->SymbolicLinkNameLength < input->SymbolicLinkNameOffset ||
261 input->UniqueIdOffset + input->UniqueIdLength < input->UniqueIdOffset ||
262 input->DeviceNameOffset + input->DeviceNameLength < input->DeviceNameOffset)
263 return STATUS_INVALID_PARAMETER;
265 for (i = j = size = 0; i < MAX_MOUNT_POINTS; i++)
267 if (!mount_points[i].device) continue;
268 if (!matching_mount_point( &mount_points[i], input )) continue;
269 size += get_device_name(mount_points[i].device)->Length;
270 size += mount_points[i].link.Length;
273 pos = FIELD_OFFSET( MOUNTMGR_MOUNT_POINTS, MountPoints[j] );
278 if (size >= sizeof(info->Size)) info->Size = size;
279 iosb->Information = sizeof(info->Size);
280 return STATUS_MORE_ENTRIES;
283 info->NumberOfMountPoints = j;
284 for (i = j = 0; i < MAX_MOUNT_POINTS; i++)
286 if (!mount_points[i].device) continue;
287 if (!matching_mount_point( &mount_points[i], input )) continue;
288 info->MountPoints[j].UniqueIdOffset = 0; /* FIXME */
289 info->MountPoints[j].UniqueIdLength = 0;
291 dev_name = get_device_name( mount_points[i].device );
292 info->MountPoints[j].DeviceNameOffset = pos;
293 info->MountPoints[j].DeviceNameLength = dev_name->Length;
294 memcpy( (char *)out_buff + pos, dev_name->Buffer, dev_name->Length );
295 pos += dev_name->Length;
297 info->MountPoints[j].SymbolicLinkNameOffset = pos;
298 info->MountPoints[j].SymbolicLinkNameLength = mount_points[i].link.Length;
299 memcpy( (char *)out_buff + pos, mount_points[i].link.Buffer, mount_points[i].link.Length );
300 pos += mount_points[i].link.Length;
304 iosb->Information = pos;
305 return STATUS_SUCCESS;
308 /* handler for ioctls on the mount manager device */
309 static NTSTATUS WINAPI mountmgr_ioctl( DEVICE_OBJECT *device, IRP *irp )
311 IO_STACK_LOCATION *irpsp = irp->Tail.Overlay.s.u.CurrentStackLocation;
313 TRACE( "ioctl %x insize %u outsize %u\n",
314 irpsp->Parameters.DeviceIoControl.IoControlCode,
315 irpsp->Parameters.DeviceIoControl.InputBufferLength,
316 irpsp->Parameters.DeviceIoControl.OutputBufferLength );
318 switch(irpsp->Parameters.DeviceIoControl.IoControlCode)
320 case IOCTL_MOUNTMGR_QUERY_POINTS:
321 if (irpsp->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_MOUNT_POINT))
322 return STATUS_INVALID_PARAMETER;
323 irp->IoStatus.u.Status = query_mount_points( irpsp->Parameters.DeviceIoControl.Type3InputBuffer,
324 irpsp->Parameters.DeviceIoControl.InputBufferLength,
325 irp->MdlAddress->StartVa,
326 irpsp->Parameters.DeviceIoControl.OutputBufferLength,
330 FIXME( "ioctl %x not supported\n", irpsp->Parameters.DeviceIoControl.IoControlCode );
331 irp->IoStatus.u.Status = STATUS_NOT_SUPPORTED;
334 return irp->IoStatus.u.Status;
337 /* handler for ioctls on the harddisk device */
338 static NTSTATUS WINAPI harddisk_ioctl( DEVICE_OBJECT *device, IRP *irp )
340 IO_STACK_LOCATION *irpsp = irp->Tail.Overlay.s.u.CurrentStackLocation;
342 TRACE( "ioctl %x insize %u outsize %u\n",
343 irpsp->Parameters.DeviceIoControl.IoControlCode,
344 irpsp->Parameters.DeviceIoControl.InputBufferLength,
345 irpsp->Parameters.DeviceIoControl.OutputBufferLength );
347 switch(irpsp->Parameters.DeviceIoControl.IoControlCode)
350 FIXME( "unsupported ioctl %x\n", irpsp->Parameters.DeviceIoControl.IoControlCode );
351 irp->IoStatus.u.Status = STATUS_NOT_SUPPORTED;
354 return irp->IoStatus.u.Status;
357 /* create mount points for mapped drives */
358 static void create_drive_mount_points( DRIVER_OBJECT *driver )
360 const char *config_dir = wine_get_config_dir();
361 char *buffer, *p, *link;
364 if ((buffer = RtlAllocateHeap( GetProcessHeap(), 0,
365 strlen(config_dir) + sizeof("/dosdevices/a:") )))
367 strcpy( buffer, config_dir );
368 strcat( buffer, "/dosdevices/a:" );
369 p = buffer + strlen(buffer) - 2;
371 for (i = 0; i < MAX_DOS_DRIVES; i++)
374 if (!(link = read_symlink( buffer ))) continue;
375 add_mount_point( driver, DRIVE_FIXED, i, link, strlen(link) );
376 RtlFreeHeap( GetProcessHeap(), 0, link );
378 RtlFreeHeap( GetProcessHeap(), 0, buffer );
382 /* driver entry point for the harddisk driver */
383 static NTSTATUS WINAPI harddisk_driver_entry( DRIVER_OBJECT *driver, UNICODE_STRING *path )
385 static const WCHAR mounted_devicesW[] = {'S','y','s','t','e','m','\\',
386 'M','o','u','n','t','e','d','D','e','v','i','c','e','s',0};
387 static const WCHAR harddisk0W[] = {'\\','D','e','v','i','c','e',
388 '\\','H','a','r','d','d','i','s','k','0',0};
389 static const WCHAR physdrive0W[] = {'\\','?','?','\\','P','h','y','s','i','c','a','l','D','r','i','v','e','0',0};
391 UNICODE_STRING nameW, linkW;
392 DEVICE_OBJECT *device;
395 driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = harddisk_ioctl;
397 RegCreateKeyExW( HKEY_LOCAL_MACHINE, mounted_devicesW, 0, NULL,
398 REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &mount_key, NULL );
400 RtlInitUnicodeString( &nameW, harddisk0W );
401 RtlInitUnicodeString( &linkW, physdrive0W );
402 if (!(status = IoCreateDevice( driver, 0, &nameW, 0, 0, FALSE, &device )))
403 status = IoCreateSymbolicLink( &linkW, &nameW );
406 FIXME( "failed to create device error %x\n", status );
410 create_drive_mount_points( driver );
415 /* main entry point for the mount point manager driver */
416 NTSTATUS WINAPI DriverEntry( DRIVER_OBJECT *driver, UNICODE_STRING *path )
418 static const WCHAR device_mountmgrW[] = {'\\','D','e','v','i','c','e','\\','M','o','u','n','t','P','o','i','n','t','M','a','n','a','g','e','r',0};
419 static const WCHAR link_mountmgrW[] = {'\\','?','?','\\','M','o','u','n','t','P','o','i','n','t','M','a','n','a','g','e','r',0};
420 static const WCHAR harddiskW[] = {'\\','D','r','i','v','e','r','\\','H','a','r','d','d','i','s','k',0};
422 UNICODE_STRING nameW, linkW;
423 DEVICE_OBJECT *device;
426 TRACE( "%s\n", debugstr_w(path->Buffer) );
428 driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = mountmgr_ioctl;
430 RtlInitUnicodeString( &nameW, device_mountmgrW );
431 RtlInitUnicodeString( &linkW, link_mountmgrW );
432 if (!(status = IoCreateDevice( driver, 0, &nameW, 0, 0, FALSE, &device )))
433 status = IoCreateSymbolicLink( &linkW, &nameW );
436 FIXME( "failed to create device error %x\n", status );
440 RtlInitUnicodeString( &nameW, harddiskW );
441 status = IoCreateDriver( &nameW, harddisk_driver_entry );