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
29 #include "wine/library.h"
30 #include "wine/list.h"
31 #include "wine/unicode.h"
32 #include "wine/debug.h"
34 WINE_DEFAULT_DEBUG_CHANNEL(mountmgr);
40 struct list entry; /* entry in mount points list */
41 DEVICE_OBJECT *device; /* disk device */
42 UNICODE_STRING name; /* device name */
43 UNICODE_STRING link; /* DOS device symlink */
44 void *id; /* device unique id */
48 static struct list mount_points_list = LIST_INIT(mount_points_list);
49 static HKEY mount_key;
51 void set_mount_point_id( struct mount_point *mount, const void *id, unsigned int id_len )
53 RtlFreeHeap( GetProcessHeap(), 0, mount->id );
54 mount->id_len = max( MIN_ID_LEN, id_len );
55 if ((mount->id = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, mount->id_len )))
57 memcpy( mount->id, id, id_len );
58 RegSetValueExW( mount_key, mount->link.Buffer, 0, REG_BINARY, mount->id, mount->id_len );
60 else mount->id_len = 0;
63 static struct mount_point *add_mount_point( DEVICE_OBJECT *device, UNICODE_STRING *device_name,
64 const WCHAR *link, const void *id, unsigned int id_len )
66 struct mount_point *mount;
68 UINT len = (strlenW(link) + 1) * sizeof(WCHAR) + device_name->Length + sizeof(WCHAR);
70 if (!(mount = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*mount) + len ))) return NULL;
72 str = (WCHAR *)(mount + 1);
74 RtlInitUnicodeString( &mount->link, str );
75 str += strlenW(str) + 1;
76 memcpy( str, device_name->Buffer, device_name->Length );
77 str[device_name->Length / sizeof(WCHAR)] = 0;
78 mount->name.Buffer = str;
79 mount->name.Length = device_name->Length;
80 mount->name.MaximumLength = device_name->Length + sizeof(WCHAR);
81 mount->device = device;
83 list_add_tail( &mount_points_list, &mount->entry );
85 IoCreateSymbolicLink( &mount->link, device_name );
86 set_mount_point_id( mount, id, id_len );
88 TRACE( "created %s id %s for %s\n", debugstr_w(mount->link.Buffer),
89 debugstr_a(mount->id), debugstr_w(mount->name.Buffer) );
93 /* create the DosDevices mount point symlink for a new device */
94 struct mount_point *add_dosdev_mount_point( DEVICE_OBJECT *device, UNICODE_STRING *device_name,
95 int drive, const void *id, unsigned int id_len )
97 static const WCHAR driveW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','%','c',':',0};
98 WCHAR link[sizeof(driveW)];
100 sprintfW( link, driveW, 'A' + drive );
101 return add_mount_point( device, device_name, link, id, id_len );
104 /* create the Volume mount point symlink for a new device */
105 struct mount_point *add_volume_mount_point( DEVICE_OBJECT *device, UNICODE_STRING *device_name,
106 int drive, const void *id, unsigned int id_len )
108 static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',
109 '%','0','8','x','-','%','0','4','x','-','%','0','4','x','-',
110 '%','0','2','x','%','0','2','x','-','%','0','2','x','%','0','2','x',
111 '%','0','2','x','%','0','2','x','%','0','2','x','%','0','2','x','}',0};
112 WCHAR link[sizeof(volumeW)];
115 memset( &guid, 0, sizeof(guid) ); /* FIXME */
116 guid.Data4[7] = 'A' + drive;
117 sprintfW( link, volumeW, guid.Data1, guid.Data2, guid.Data3,
118 guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
119 guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
120 return add_mount_point( device, device_name, link, id, id_len );
123 /* delete the mount point symlinks when a device goes away */
124 void delete_mount_point( struct mount_point *mount )
126 TRACE( "deleting %s\n", debugstr_w(mount->link.Buffer) );
127 list_remove( &mount->entry );
128 RegDeleteValueW( mount_key, mount->link.Buffer );
129 IoDeleteSymbolicLink( &mount->link );
130 RtlFreeHeap( GetProcessHeap(), 0, mount->id );
131 RtlFreeHeap( GetProcessHeap(), 0, mount );
134 /* check if a given mount point matches the requested specs */
135 static BOOL matching_mount_point( const struct mount_point *mount, const MOUNTMGR_MOUNT_POINT *spec )
137 if (spec->SymbolicLinkNameOffset)
139 const WCHAR *name = (const WCHAR *)((const char *)spec + spec->SymbolicLinkNameOffset);
140 if (spec->SymbolicLinkNameLength != mount->link.Length) return FALSE;
141 if (memicmpW( name, mount->link.Buffer, mount->link.Length/sizeof(WCHAR)))
144 if (spec->DeviceNameOffset)
146 const WCHAR *name = (const WCHAR *)((const char *)spec + spec->DeviceNameOffset);
147 if (spec->DeviceNameLength != mount->name.Length) return FALSE;
148 if (memicmpW( name, mount->name.Buffer, mount->name.Length/sizeof(WCHAR)))
151 if (spec->UniqueIdOffset)
153 const void *id = ((const char *)spec + spec->UniqueIdOffset);
154 if (spec->UniqueIdLength != mount->id_len) return FALSE;
155 if (memcmp( id, mount->id, mount->id_len )) return FALSE;
160 /* implementation of IOCTL_MOUNTMGR_QUERY_POINTS */
161 static NTSTATUS query_mount_points( const void *in_buff, SIZE_T insize,
162 void *out_buff, SIZE_T outsize, IO_STATUS_BLOCK *iosb )
164 UINT count, pos, size;
165 const MOUNTMGR_MOUNT_POINT *input = in_buff;
166 MOUNTMGR_MOUNT_POINTS *info = out_buff;
167 struct mount_point *mount;
170 if (input->SymbolicLinkNameOffset + input->SymbolicLinkNameLength > insize ||
171 input->UniqueIdOffset + input->UniqueIdLength > insize ||
172 input->DeviceNameOffset + input->DeviceNameLength > insize ||
173 input->SymbolicLinkNameOffset + input->SymbolicLinkNameLength < input->SymbolicLinkNameOffset ||
174 input->UniqueIdOffset + input->UniqueIdLength < input->UniqueIdOffset ||
175 input->DeviceNameOffset + input->DeviceNameLength < input->DeviceNameOffset)
176 return STATUS_INVALID_PARAMETER;
179 LIST_FOR_EACH_ENTRY( mount, &mount_points_list, struct mount_point, entry )
181 if (!matching_mount_point( mount, input )) continue;
182 size += mount->name.Length;
183 size += mount->link.Length;
184 size += mount->id_len;
185 size = (size + sizeof(WCHAR) - 1) & ~(sizeof(WCHAR) - 1);
188 pos = FIELD_OFFSET( MOUNTMGR_MOUNT_POINTS, MountPoints[count] );
193 if (size >= sizeof(info->Size)) info->Size = size;
194 iosb->Information = sizeof(info->Size);
195 return STATUS_MORE_ENTRIES;
198 info->NumberOfMountPoints = count;
200 LIST_FOR_EACH_ENTRY( mount, &mount_points_list, struct mount_point, entry )
202 if (!matching_mount_point( mount, input )) continue;
204 info->MountPoints[count].DeviceNameOffset = pos;
205 info->MountPoints[count].DeviceNameLength = mount->name.Length;
206 memcpy( (char *)out_buff + pos, mount->name.Buffer, mount->name.Length );
207 pos += mount->name.Length;
209 info->MountPoints[count].SymbolicLinkNameOffset = pos;
210 info->MountPoints[count].SymbolicLinkNameLength = mount->link.Length;
211 memcpy( (char *)out_buff + pos, mount->link.Buffer, mount->link.Length );
212 pos += mount->link.Length;
214 info->MountPoints[count].UniqueIdOffset = pos;
215 info->MountPoints[count].UniqueIdLength = mount->id_len;
216 memcpy( (char *)out_buff + pos, mount->id, mount->id_len );
217 pos += mount->id_len;
218 pos = (pos + sizeof(WCHAR) - 1) & ~(sizeof(WCHAR) - 1);
222 iosb->Information = pos;
223 return STATUS_SUCCESS;
226 /* implementation of IOCTL_MOUNTMGR_DEFINE_UNIX_DRIVE */
227 static NTSTATUS define_unix_drive( const void *in_buff, SIZE_T insize )
229 const struct mountmgr_unix_drive *input = in_buff;
230 const char *mount_point = NULL, *device = NULL;
232 WCHAR letter = tolowerW( input->letter );
234 if (letter < 'a' || letter > 'z') return STATUS_INVALID_PARAMETER;
235 if (input->type > DRIVE_RAMDISK) return STATUS_INVALID_PARAMETER;
236 if (input->mount_point_offset > insize || input->device_offset > insize)
237 return STATUS_INVALID_PARAMETER;
239 /* make sure string are null-terminated */
240 if (input->mount_point_offset)
242 mount_point = (const char *)in_buff + input->mount_point_offset;
243 for (i = input->mount_point_offset; i < insize; i++)
244 if (!*((const char *)in_buff + i)) break;
245 if (i >= insize) return STATUS_INVALID_PARAMETER;
247 if (input->device_offset)
249 device = (const char *)in_buff + input->device_offset;
250 for (i = input->device_offset; i < insize; i++)
251 if (!*((const char *)in_buff + i)) break;
252 if (i >= insize) return STATUS_INVALID_PARAMETER;
255 if (input->type != DRIVE_NO_ROOT_DIR)
257 enum device_type type = DEVICE_UNKNOWN;
259 TRACE( "defining %c: dev %s mount %s type %u\n",
260 letter, debugstr_a(device), debugstr_a(mount_point), input->type );
263 case DRIVE_REMOVABLE: type = (letter >= 'c') ? DEVICE_HARDDISK : DEVICE_FLOPPY; break;
264 case DRIVE_REMOTE: type = DEVICE_NETWORK; break;
265 case DRIVE_CDROM: type = DEVICE_CDROM; break;
266 case DRIVE_RAMDISK: type = DEVICE_RAMDISK; break;
268 return add_dos_device( letter - 'a', NULL, device, mount_point, type );
272 TRACE( "removing %c:\n", letter );
273 return remove_dos_device( letter - 'a', NULL );
277 /* implementation of IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE */
278 static NTSTATUS query_unix_drive( const void *in_buff, SIZE_T insize,
279 void *out_buff, SIZE_T outsize, IO_STATUS_BLOCK *iosb )
281 const struct mountmgr_unix_drive *input = in_buff;
282 struct mountmgr_unix_drive *output = out_buff;
283 const char *device, *mount_point;
284 int letter = tolowerW( input->letter );
287 enum device_type device_type;
290 if (letter < 'a' || letter > 'z') return STATUS_INVALID_PARAMETER;
292 if ((status = query_dos_device( letter - 'a', &device_type, &device, &mount_point ))) return status;
295 case DEVICE_UNKNOWN: type = DRIVE_UNKNOWN; break;
296 case DEVICE_HARDDISK: type = DRIVE_REMOVABLE; break;
297 case DEVICE_HARDDISK_VOL: type = DRIVE_FIXED; break;
298 case DEVICE_FLOPPY: type = DRIVE_REMOVABLE; break;
299 case DEVICE_CDROM: type = DRIVE_CDROM; break;
300 case DEVICE_NETWORK: type = DRIVE_REMOTE; break;
301 case DEVICE_RAMDISK: type = DRIVE_RAMDISK; break;
304 size = sizeof(*output);
305 if (device) size += strlen(device) + 1;
306 if (mount_point) size += strlen(mount_point) + 1;
310 iosb->Information = 0;
311 if (size >= FIELD_OFFSET( struct mountmgr_unix_drive, size ) + sizeof(output->size))
314 iosb->Information = FIELD_OFFSET( struct mountmgr_unix_drive, size ) + sizeof(output->size);
316 if (size >= FIELD_OFFSET( struct mountmgr_unix_drive, type ) + sizeof(output->type))
319 iosb->Information = FIELD_OFFSET( struct mountmgr_unix_drive, type ) + sizeof(output->type);
321 return STATUS_MORE_ENTRIES;
324 output->letter = letter;
326 ptr = (char *)(output + 1);
330 output->mount_point_offset = ptr - (char *)output;
331 strcpy( ptr, mount_point );
332 ptr += strlen(ptr) + 1;
334 else output->mount_point_offset = 0;
338 output->device_offset = ptr - (char *)output;
339 strcpy( ptr, device );
340 ptr += strlen(ptr) + 1;
342 else output->device_offset = 0;
344 TRACE( "returning %c: dev %s mount %s type %u\n",
345 letter, debugstr_a(device), debugstr_a(mount_point), type );
347 iosb->Information = ptr - (char *)output;
348 return STATUS_SUCCESS;
351 /* handler for ioctls on the mount manager device */
352 static NTSTATUS WINAPI mountmgr_ioctl( DEVICE_OBJECT *device, IRP *irp )
354 IO_STACK_LOCATION *irpsp = irp->Tail.Overlay.s.u.CurrentStackLocation;
356 TRACE( "ioctl %x insize %u outsize %u\n",
357 irpsp->Parameters.DeviceIoControl.IoControlCode,
358 irpsp->Parameters.DeviceIoControl.InputBufferLength,
359 irpsp->Parameters.DeviceIoControl.OutputBufferLength );
361 switch(irpsp->Parameters.DeviceIoControl.IoControlCode)
363 case IOCTL_MOUNTMGR_QUERY_POINTS:
364 if (irpsp->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_MOUNT_POINT))
365 return STATUS_INVALID_PARAMETER;
366 irp->IoStatus.u.Status = query_mount_points( irpsp->Parameters.DeviceIoControl.Type3InputBuffer,
367 irpsp->Parameters.DeviceIoControl.InputBufferLength,
368 irp->MdlAddress->StartVa,
369 irpsp->Parameters.DeviceIoControl.OutputBufferLength,
372 case IOCTL_MOUNTMGR_DEFINE_UNIX_DRIVE:
373 if (irpsp->Parameters.DeviceIoControl.InputBufferLength < sizeof(struct mountmgr_unix_drive))
374 return STATUS_INVALID_PARAMETER;
375 irp->IoStatus.Information = 0;
376 irp->IoStatus.u.Status = define_unix_drive( irpsp->Parameters.DeviceIoControl.Type3InputBuffer,
377 irpsp->Parameters.DeviceIoControl.InputBufferLength );
379 case IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE:
380 if (irpsp->Parameters.DeviceIoControl.InputBufferLength < sizeof(struct mountmgr_unix_drive))
381 return STATUS_INVALID_PARAMETER;
382 irp->IoStatus.u.Status = query_unix_drive( irpsp->Parameters.DeviceIoControl.Type3InputBuffer,
383 irpsp->Parameters.DeviceIoControl.InputBufferLength,
384 irp->MdlAddress->StartVa,
385 irpsp->Parameters.DeviceIoControl.OutputBufferLength,
389 FIXME( "ioctl %x not supported\n", irpsp->Parameters.DeviceIoControl.IoControlCode );
390 irp->IoStatus.u.Status = STATUS_NOT_SUPPORTED;
393 return irp->IoStatus.u.Status;
396 /* main entry point for the mount point manager driver */
397 NTSTATUS WINAPI DriverEntry( DRIVER_OBJECT *driver, UNICODE_STRING *path )
399 static const WCHAR mounted_devicesW[] = {'S','y','s','t','e','m','\\','M','o','u','n','t','e','d','D','e','v','i','c','e','s',0};
400 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};
401 static const WCHAR link_mountmgrW[] = {'\\','?','?','\\','M','o','u','n','t','P','o','i','n','t','M','a','n','a','g','e','r',0};
402 static const WCHAR harddiskW[] = {'\\','D','r','i','v','e','r','\\','H','a','r','d','d','i','s','k',0};
404 UNICODE_STRING nameW, linkW;
405 DEVICE_OBJECT *device;
408 TRACE( "%s\n", debugstr_w(path->Buffer) );
410 driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = mountmgr_ioctl;
412 RtlInitUnicodeString( &nameW, device_mountmgrW );
413 RtlInitUnicodeString( &linkW, link_mountmgrW );
414 if (!(status = IoCreateDevice( driver, 0, &nameW, 0, 0, FALSE, &device )))
415 status = IoCreateSymbolicLink( &linkW, &nameW );
418 FIXME( "failed to create device error %x\n", status );
422 RegCreateKeyExW( HKEY_LOCAL_MACHINE, mounted_devicesW, 0, NULL,
423 REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &mount_key, NULL );
425 RtlInitUnicodeString( &nameW, harddiskW );
426 status = IoCreateDriver( &nameW, harddisk_driver_entry );
429 initialize_diskarbitration();