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
37 #include "ddk/mountmgr.h"
38 #include "wine/library.h"
39 #include "wine/unicode.h"
40 #include "wine/debug.h"
43 WINE_DEFAULT_DEBUG_CHANNEL(mountmgr);
45 #define MAX_DOS_DRIVES 26
46 #define MAX_MOUNT_POINTS (2 * MAX_DOS_DRIVES)
48 /* extra info for disk devices, stored in DeviceExtension */
49 struct disk_device_info
51 UNICODE_STRING name; /* device name */
52 STORAGE_DEVICE_NUMBER devnum; /* device number info */
57 DEVICE_OBJECT *device;
58 UNICODE_STRING link; /* DOS device symlink */
59 void *id; /* device unique id */
63 static struct mount_point mount_points[MAX_MOUNT_POINTS];
64 static HKEY mount_key;
66 static inline UNICODE_STRING *get_device_name( DEVICE_OBJECT *dev )
68 return &((struct disk_device_info *)dev->DeviceExtension)->name;
71 /* read a Unix symlink; returned buffer must be freed by caller */
72 static char *read_symlink( const char *path )
79 if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, size )))
81 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
84 ret = readlink( path, buffer, size );
87 RtlFreeHeap( GetProcessHeap(), 0, buffer );
95 RtlFreeHeap( GetProcessHeap(), 0, buffer );
100 static NTSTATUS create_disk_device( DRIVER_OBJECT *driver, DWORD type, DEVICE_OBJECT **dev_obj )
102 static const WCHAR harddiskW[] = {'\\','D','e','v','i','c','e',
103 '\\','H','a','r','d','d','i','s','k','V','o','l','u','m','e','%','u',0};
104 static const WCHAR cdromW[] = {'\\','D','e','v','i','c','e','\\','C','d','R','o','m','%','u',0};
105 static const WCHAR floppyW[] = {'\\','D','e','v','i','c','e','\\','F','l','o','p','p','y','%','u',0};
111 struct disk_device_info *info;
115 case DRIVE_REMOVABLE:
124 first = 1; /* harddisk volumes start counting from 1 */
128 name.MaximumLength = (strlenW(format) + 10) * sizeof(WCHAR);
129 name.Buffer = RtlAllocateHeap( GetProcessHeap(), 0, name.MaximumLength );
130 for (i = first; i < 32; i++)
132 sprintfW( name.Buffer, format, i );
133 name.Length = strlenW(name.Buffer) * sizeof(WCHAR);
134 status = IoCreateDevice( driver, sizeof(*info), &name, 0, 0, FALSE, dev_obj );
135 if (status != STATUS_OBJECT_NAME_COLLISION) break;
139 info = (*dev_obj)->DeviceExtension;
143 case DRIVE_REMOVABLE:
144 info->devnum.DeviceType = FILE_DEVICE_DISK;
145 info->devnum.DeviceNumber = i;
146 info->devnum.PartitionNumber = ~0u;
149 info->devnum.DeviceType = FILE_DEVICE_CD_ROM;
150 info->devnum.DeviceNumber = i;
151 info->devnum.PartitionNumber = ~0u;
155 info->devnum.DeviceType = FILE_DEVICE_DISK;
156 info->devnum.DeviceNumber = 0;
157 info->devnum.PartitionNumber = i;
163 FIXME( "IoCreateDevice %s got %x\n", debugstr_w(name.Buffer), status );
164 RtlFreeUnicodeString( &name );
170 static NTSTATUS add_mount_point( DRIVER_OBJECT *driver, DWORD type, int drive,
171 const void *id, unsigned int id_len )
173 static const WCHAR driveW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','%','c',':',0};
174 static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',
175 '%','0','8','x','-','%','0','4','x','-','%','0','4','x','-',
176 '%','0','2','x','%','0','2','x','-','%','0','2','x','%','0','2','x',
177 '%','0','2','x','%','0','2','x','%','0','2','x','%','0','2','x','}',0};
178 WCHAR *drive_link, *volume_link;
182 struct mount_point *mount_drive = NULL, *mount_volume = NULL;
184 /* find two free mount points */
186 for (i = 0; i < MAX_MOUNT_POINTS; i++)
188 if (mount_points[i].device) continue;
191 mount_drive = &mount_points[i];
194 mount_volume = &mount_points[i];
197 if (!mount_volume) return STATUS_NO_MEMORY;
199 /* create the volume */
201 memset( &guid, 0, sizeof(guid) ); /* FIXME */
202 guid.Data4[7] = 'A' + drive;
204 drive_link = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(driveW) );
205 volume_link = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(volumeW) );
206 sprintfW( drive_link, driveW, 'A' + drive );
207 sprintfW( volume_link, volumeW, guid.Data1, guid.Data2, guid.Data3,
208 guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
209 guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
211 RtlInitUnicodeString( &mount_drive->link, drive_link );
212 RtlInitUnicodeString( &mount_volume->link, volume_link );
213 status = create_disk_device( driver, type, &mount_drive->device );
216 RtlFreeUnicodeString( &mount_drive->link );
217 RtlFreeUnicodeString( &mount_volume->link );
221 mount_volume->device = mount_drive->device; /* FIXME: incr ref count */
222 mount_drive->id = RtlAllocateHeap( GetProcessHeap(), 0, id_len );
223 mount_drive->id_len = id_len;
224 memcpy( mount_drive->id, id, id_len );
225 mount_volume->id = RtlAllocateHeap( GetProcessHeap(), 0, id_len );
226 mount_volume->id_len = id_len;
227 memcpy( mount_volume->id, id, id_len );
229 IoCreateSymbolicLink( &mount_drive->link, get_device_name(mount_drive->device) );
230 IoCreateSymbolicLink( &mount_volume->link, get_device_name(mount_volume->device) );
232 TRACE( "created device %s symlinks %s %s\n", debugstr_w(get_device_name(mount_drive->device)->Buffer),
233 debugstr_w(mount_drive->link.Buffer), debugstr_w(mount_volume->link.Buffer) );
235 RegSetValueExW( mount_key, mount_drive->link.Buffer, 0, REG_BINARY,
236 mount_drive->id, mount_drive->id_len );
237 RegSetValueExW( mount_key, mount_volume->link.Buffer, 0, REG_BINARY,
238 mount_volume->id, mount_volume->id_len );
240 return STATUS_SUCCESS;
243 /* check if a given mount point matches the requested specs */
244 static BOOL matching_mount_point( const struct mount_point *mount, const MOUNTMGR_MOUNT_POINT *spec )
246 if (spec->SymbolicLinkNameOffset)
248 const WCHAR *name = (const WCHAR *)((const char *)spec + spec->SymbolicLinkNameOffset);
249 if (spec->SymbolicLinkNameLength != mount->link.Length) return FALSE;
250 if (memicmpW( name, mount->link.Buffer, mount->link.Length/sizeof(WCHAR)))
253 if (spec->DeviceNameOffset)
255 const WCHAR *name = (const WCHAR *)((const char *)spec + spec->DeviceNameOffset);
256 const UNICODE_STRING *dev_name = get_device_name( mount->device );
257 if (spec->DeviceNameLength != dev_name->Length) return FALSE;
258 if (memicmpW( name, dev_name->Buffer, dev_name->Length/sizeof(WCHAR)))
261 if (spec->UniqueIdOffset)
263 const void *id = ((const char *)spec + spec->UniqueIdOffset);
264 if (spec->UniqueIdLength != mount->id_len) return FALSE;
265 if (memcmp( id, mount->id, mount->id_len )) return FALSE;
270 /* implementation of IOCTL_MOUNTMGR_QUERY_POINTS */
271 static NTSTATUS query_mount_points( const void *in_buff, SIZE_T insize,
272 void *out_buff, SIZE_T outsize, IO_STATUS_BLOCK *iosb )
274 UINT i, j, pos, size;
275 const MOUNTMGR_MOUNT_POINT *input = in_buff;
276 MOUNTMGR_MOUNT_POINTS *info = out_buff;
277 UNICODE_STRING *dev_name;
280 if (input->SymbolicLinkNameOffset + input->SymbolicLinkNameLength > insize ||
281 input->UniqueIdOffset + input->UniqueIdLength > insize ||
282 input->DeviceNameOffset + input->DeviceNameLength > insize ||
283 input->SymbolicLinkNameOffset + input->SymbolicLinkNameLength < input->SymbolicLinkNameOffset ||
284 input->UniqueIdOffset + input->UniqueIdLength < input->UniqueIdOffset ||
285 input->DeviceNameOffset + input->DeviceNameLength < input->DeviceNameOffset)
286 return STATUS_INVALID_PARAMETER;
288 for (i = j = size = 0; i < MAX_MOUNT_POINTS; i++)
290 if (!mount_points[i].device) continue;
291 if (!matching_mount_point( &mount_points[i], input )) continue;
292 size += get_device_name(mount_points[i].device)->Length;
293 size += mount_points[i].link.Length;
294 size += strlen(mount_points[i].id) + 1;
295 size = (size + sizeof(WCHAR) - 1) & ~(sizeof(WCHAR) - 1);
298 pos = FIELD_OFFSET( MOUNTMGR_MOUNT_POINTS, MountPoints[j] );
303 if (size >= sizeof(info->Size)) info->Size = size;
304 iosb->Information = sizeof(info->Size);
305 return STATUS_MORE_ENTRIES;
308 info->NumberOfMountPoints = j;
309 for (i = j = 0; i < MAX_MOUNT_POINTS; i++)
311 if (!mount_points[i].device) continue;
312 if (!matching_mount_point( &mount_points[i], input )) continue;
314 dev_name = get_device_name( mount_points[i].device );
315 info->MountPoints[j].DeviceNameOffset = pos;
316 info->MountPoints[j].DeviceNameLength = dev_name->Length;
317 memcpy( (char *)out_buff + pos, dev_name->Buffer, dev_name->Length );
318 pos += dev_name->Length;
320 info->MountPoints[j].SymbolicLinkNameOffset = pos;
321 info->MountPoints[j].SymbolicLinkNameLength = mount_points[i].link.Length;
322 memcpy( (char *)out_buff + pos, mount_points[i].link.Buffer, mount_points[i].link.Length );
323 pos += mount_points[i].link.Length;
325 info->MountPoints[j].UniqueIdOffset = pos;
326 info->MountPoints[j].UniqueIdLength = strlen(mount_points[i].id) + 1;
327 memcpy( (char *)out_buff + pos, mount_points[i].id, strlen(mount_points[i].id) + 1 );
328 pos += strlen(mount_points[i].id) + 1;
329 pos = (pos + sizeof(WCHAR) - 1) & ~(sizeof(WCHAR) - 1);
333 iosb->Information = pos;
334 return STATUS_SUCCESS;
337 /* handler for ioctls on the mount manager device */
338 static NTSTATUS WINAPI mountmgr_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)
349 case IOCTL_MOUNTMGR_QUERY_POINTS:
350 if (irpsp->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_MOUNT_POINT))
351 return STATUS_INVALID_PARAMETER;
352 irp->IoStatus.u.Status = query_mount_points( irpsp->Parameters.DeviceIoControl.Type3InputBuffer,
353 irpsp->Parameters.DeviceIoControl.InputBufferLength,
354 irp->MdlAddress->StartVa,
355 irpsp->Parameters.DeviceIoControl.OutputBufferLength,
359 FIXME( "ioctl %x not supported\n", irpsp->Parameters.DeviceIoControl.IoControlCode );
360 irp->IoStatus.u.Status = STATUS_NOT_SUPPORTED;
363 return irp->IoStatus.u.Status;
366 /* handler for ioctls on the harddisk device */
367 static NTSTATUS WINAPI harddisk_ioctl( DEVICE_OBJECT *device, IRP *irp )
369 IO_STACK_LOCATION *irpsp = irp->Tail.Overlay.s.u.CurrentStackLocation;
370 struct disk_device_info *disk_info = device->DeviceExtension;
372 TRACE( "ioctl %x insize %u outsize %u\n",
373 irpsp->Parameters.DeviceIoControl.IoControlCode,
374 irpsp->Parameters.DeviceIoControl.InputBufferLength,
375 irpsp->Parameters.DeviceIoControl.OutputBufferLength );
377 switch(irpsp->Parameters.DeviceIoControl.IoControlCode)
379 case IOCTL_DISK_GET_DRIVE_GEOMETRY:
382 DWORD len = min( sizeof(info), irpsp->Parameters.DeviceIoControl.OutputBufferLength );
384 info.Cylinders.QuadPart = 10000;
385 info.MediaType = (disk_info->devnum.DeviceType == FILE_DEVICE_DISK) ? FixedMedia : RemovableMedia;
386 info.TracksPerCylinder = 255;
387 info.SectorsPerTrack = 63;
388 info.BytesPerSector = 512;
389 memcpy( irp->MdlAddress->StartVa, &info, len );
390 irp->IoStatus.Information = len;
391 irp->IoStatus.u.Status = STATUS_SUCCESS;
394 case IOCTL_STORAGE_GET_DEVICE_NUMBER:
396 DWORD len = min( sizeof(disk_info->devnum), irpsp->Parameters.DeviceIoControl.OutputBufferLength );
398 memcpy( irp->MdlAddress->StartVa, &disk_info->devnum, len );
399 irp->IoStatus.Information = len;
400 irp->IoStatus.u.Status = STATUS_SUCCESS;
403 case IOCTL_CDROM_READ_TOC:
404 irp->IoStatus.u.Status = STATUS_INVALID_DEVICE_REQUEST;
407 FIXME( "unsupported ioctl %x\n", irpsp->Parameters.DeviceIoControl.IoControlCode );
408 irp->IoStatus.u.Status = STATUS_NOT_SUPPORTED;
411 return irp->IoStatus.u.Status;
414 /* create mount points for mapped drives */
415 static void create_drive_mount_points( DRIVER_OBJECT *driver )
417 const char *config_dir = wine_get_config_dir();
418 char *buffer, *p, *link;
421 if ((buffer = RtlAllocateHeap( GetProcessHeap(), 0,
422 strlen(config_dir) + sizeof("/dosdevices/a:") )))
424 strcpy( buffer, config_dir );
425 strcat( buffer, "/dosdevices/a:" );
426 p = buffer + strlen(buffer) - 2;
428 for (i = 0; i < MAX_DOS_DRIVES; i++)
431 if (!(link = read_symlink( buffer ))) continue;
432 add_mount_point( driver, DRIVE_FIXED, i, link, strlen(link) + 1 );
433 RtlFreeHeap( GetProcessHeap(), 0, link );
435 RtlFreeHeap( GetProcessHeap(), 0, buffer );
439 /* driver entry point for the harddisk driver */
440 static NTSTATUS WINAPI harddisk_driver_entry( DRIVER_OBJECT *driver, UNICODE_STRING *path )
442 static const WCHAR mounted_devicesW[] = {'S','y','s','t','e','m','\\',
443 'M','o','u','n','t','e','d','D','e','v','i','c','e','s',0};
444 static const WCHAR harddisk0W[] = {'\\','D','e','v','i','c','e',
445 '\\','H','a','r','d','d','i','s','k','0',0};
446 static const WCHAR physdrive0W[] = {'\\','?','?','\\','P','h','y','s','i','c','a','l','D','r','i','v','e','0',0};
448 UNICODE_STRING nameW, linkW;
449 DEVICE_OBJECT *device;
451 struct disk_device_info *info;
453 driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = harddisk_ioctl;
455 RegCreateKeyExW( HKEY_LOCAL_MACHINE, mounted_devicesW, 0, NULL,
456 REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &mount_key, NULL );
458 RtlInitUnicodeString( &nameW, harddisk0W );
459 RtlInitUnicodeString( &linkW, physdrive0W );
460 if (!(status = IoCreateDevice( driver, sizeof(*info), &nameW, 0, 0, FALSE, &device )))
461 status = IoCreateSymbolicLink( &linkW, &nameW );
464 FIXME( "failed to create device error %x\n", status );
467 info = device->DeviceExtension;
469 info->devnum.DeviceType = FILE_DEVICE_DISK;
470 info->devnum.DeviceNumber = 0;
471 info->devnum.PartitionNumber = 0;
473 create_drive_mount_points( driver );
478 /* main entry point for the mount point manager driver */
479 NTSTATUS WINAPI DriverEntry( DRIVER_OBJECT *driver, UNICODE_STRING *path )
481 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};
482 static const WCHAR link_mountmgrW[] = {'\\','?','?','\\','M','o','u','n','t','P','o','i','n','t','M','a','n','a','g','e','r',0};
483 static const WCHAR harddiskW[] = {'\\','D','r','i','v','e','r','\\','H','a','r','d','d','i','s','k',0};
485 UNICODE_STRING nameW, linkW;
486 DEVICE_OBJECT *device;
489 TRACE( "%s\n", debugstr_w(path->Buffer) );
491 driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = mountmgr_ioctl;
493 RtlInitUnicodeString( &nameW, device_mountmgrW );
494 RtlInitUnicodeString( &linkW, link_mountmgrW );
495 if (!(status = IoCreateDevice( driver, 0, &nameW, 0, 0, FALSE, &device )))
496 status = IoCreateSymbolicLink( &linkW, &nameW );
499 FIXME( "failed to create device error %x\n", status );
504 initialize_diskarbitration();
506 RtlInitUnicodeString( &nameW, harddiskW );
507 status = IoCreateDriver( &nameW, harddisk_driver_entry );