2 * Dynamic devices support
4 * Copyright 2006 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
22 #include "wine/port.h"
35 #include "wine/library.h"
36 #include "wine/list.h"
37 #include "wine/unicode.h"
38 #include "wine/debug.h"
40 WINE_DEFAULT_DEBUG_CHANNEL(mountmgr);
42 #define MAX_DOS_DRIVES 26
44 static const WCHAR drive_types[][8] =
46 { 0 }, /* DEVICE_UNKNOWN */
47 { 0 }, /* DEVICE_HARDDISK */
48 {'h','d',0}, /* DEVICE_HARDDISK_VOL */
49 {'f','l','o','p','p','y',0}, /* DEVICE_FLOPPY */
50 {'c','d','r','o','m',0}, /* DEVICE_CDROM */
51 {'n','e','t','w','o','r','k',0}, /* DEVICE_NETWORK */
52 {'r','a','m','d','i','s','k',0} /* DEVICE_RAMDISK */
55 static const WCHAR drives_keyW[] = {'S','o','f','t','w','a','r','e','\\',
56 'W','i','n','e','\\','D','r','i','v','e','s',0};
60 enum device_type type; /* drive type */
61 DEVICE_OBJECT *dev_obj; /* disk device allocated for this volume */
62 UNICODE_STRING name; /* device name */
63 UNICODE_STRING symlink; /* device symlink if any */
64 STORAGE_DEVICE_NUMBER devnum; /* device number info */
65 char *unix_device; /* unix device path */
66 char *unix_mount; /* unix mount point path */
71 struct list entry; /* entry in volumes list */
72 struct disk_device *device; /* disk device */
73 char *udi; /* unique identifier for dynamic volumes */
74 unsigned int ref; /* ref count */
75 GUID guid; /* volume uuid */
76 struct mount_point *mount; /* Volume{xxx} mount point */
81 struct list entry; /* entry in drives list */
82 struct volume *volume; /* volume for this drive */
83 int drive; /* drive letter (0 = A: etc.) */
84 struct mount_point *mount; /* DosDevices mount point */
87 static struct list drives_list = LIST_INIT(drives_list);
88 static struct list volumes_list = LIST_INIT(volumes_list);
90 static DRIVER_OBJECT *harddisk_driver;
92 static CRITICAL_SECTION device_section;
93 static CRITICAL_SECTION_DEBUG critsect_debug =
95 0, 0, &device_section,
96 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
97 0, 0, { (DWORD_PTR)(__FILE__ ": device_section") }
99 static CRITICAL_SECTION device_section = { &critsect_debug, -1, 0, 0, 0, 0 };
101 static char *get_dosdevices_path( char **drive )
103 const char *config_dir = wine_get_config_dir();
104 size_t len = strlen(config_dir) + sizeof("/dosdevices/a::");
105 char *path = HeapAlloc( GetProcessHeap(), 0, len );
108 strcpy( path, config_dir );
109 strcat( path, "/dosdevices/a::" );
110 *drive = path + len - 4;
115 static char *strdupA( const char *str )
119 if (!str) return NULL;
120 if ((ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(str) + 1 ))) strcpy( ret, str );
124 static const GUID *get_default_uuid( int letter )
128 guid.Data4[7] = 'A' + letter;
132 /* read a Unix symlink; returned buffer must be freed by caller */
133 static char *read_symlink( const char *path )
140 if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, size )))
142 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
145 ret = readlink( path, buffer, size );
148 RtlFreeHeap( GetProcessHeap(), 0, buffer );
156 RtlFreeHeap( GetProcessHeap(), 0, buffer );
161 /* update a symlink if it changed; return TRUE if updated */
162 static void update_symlink( const char *path, const char *dest, const char *orig_dest )
166 if (!orig_dest || strcmp( orig_dest, dest ))
169 symlink( dest, path );
175 /* send notification about a change to a given drive */
176 static void send_notify( int drive, int code )
178 DEV_BROADCAST_VOLUME info;
180 info.dbcv_size = sizeof(info);
181 info.dbcv_devicetype = DBT_DEVTYP_VOLUME;
182 info.dbcv_reserved = 0;
183 info.dbcv_unitmask = 1 << drive;
184 info.dbcv_flags = DBTF_MEDIA;
185 BroadcastSystemMessageW( BSF_FORCEIFHUNG|BSF_QUERY, NULL,
186 WM_DEVICECHANGE, code, (LPARAM)&info );
189 /* create the disk device for a given volume */
190 static NTSTATUS create_disk_device( enum device_type type, struct disk_device **device_ret )
192 static const WCHAR harddiskvolW[] = {'\\','D','e','v','i','c','e',
193 '\\','H','a','r','d','d','i','s','k','V','o','l','u','m','e','%','u',0};
194 static const WCHAR harddiskW[] = {'\\','D','e','v','i','c','e','\\','H','a','r','d','d','i','s','k','%','u',0};
195 static const WCHAR cdromW[] = {'\\','D','e','v','i','c','e','\\','C','d','R','o','m','%','u',0};
196 static const WCHAR floppyW[] = {'\\','D','e','v','i','c','e','\\','F','l','o','p','p','y','%','u',0};
197 static const WCHAR ramdiskW[] = {'\\','D','e','v','i','c','e','\\','R','a','m','d','i','s','k','%','u',0};
198 static const WCHAR physdriveW[] = {'\\','?','?','\\','P','h','y','s','i','c','a','l','D','r','i','v','e','%','u',0};
202 const WCHAR *format = NULL;
204 DEVICE_OBJECT *dev_obj;
205 struct disk_device *device;
210 case DEVICE_HARDDISK:
211 case DEVICE_NETWORK: /* FIXME */
214 case DEVICE_HARDDISK_VOL:
215 format = harddiskvolW;
216 first = 1; /* harddisk volumes start counting from 1 */
230 name.MaximumLength = (strlenW(format) + 10) * sizeof(WCHAR);
231 name.Buffer = RtlAllocateHeap( GetProcessHeap(), 0, name.MaximumLength );
232 for (i = first; i < 32; i++)
234 sprintfW( name.Buffer, format, i );
235 name.Length = strlenW(name.Buffer) * sizeof(WCHAR);
236 status = IoCreateDevice( harddisk_driver, sizeof(*device), &name, 0, 0, FALSE, &dev_obj );
237 if (status != STATUS_OBJECT_NAME_COLLISION) break;
241 device = dev_obj->DeviceExtension;
242 device->dev_obj = dev_obj;
245 device->unix_device = NULL;
246 device->unix_mount = NULL;
247 device->symlink.Buffer = NULL;
253 device->devnum.DeviceType = FILE_DEVICE_DISK;
254 device->devnum.DeviceNumber = i;
255 device->devnum.PartitionNumber = ~0u;
258 device->devnum.DeviceType = FILE_DEVICE_CD_ROM;
259 device->devnum.DeviceNumber = i;
260 device->devnum.PartitionNumber = ~0u;
263 device->devnum.DeviceType = FILE_DEVICE_DVD;
264 device->devnum.DeviceNumber = i;
265 device->devnum.PartitionNumber = ~0u;
268 case DEVICE_HARDDISK:
269 case DEVICE_NETWORK: /* FIXME */
271 UNICODE_STRING symlink;
273 symlink.MaximumLength = sizeof(physdriveW) + 10 * sizeof(WCHAR);
274 if ((symlink.Buffer = RtlAllocateHeap( GetProcessHeap(), 0, symlink.MaximumLength)))
276 sprintfW( symlink.Buffer, physdriveW, i );
277 symlink.Length = strlenW(symlink.Buffer) * sizeof(WCHAR);
278 if (!IoCreateSymbolicLink( &symlink, &name )) device->symlink = symlink;
280 device->devnum.DeviceType = FILE_DEVICE_DISK;
281 device->devnum.DeviceNumber = i;
282 device->devnum.PartitionNumber = 0;
285 case DEVICE_HARDDISK_VOL:
286 device->devnum.DeviceType = FILE_DEVICE_DISK;
287 device->devnum.DeviceNumber = 0;
288 device->devnum.PartitionNumber = i;
291 *device_ret = device;
292 TRACE( "created device %s\n", debugstr_w(name.Buffer) );
296 FIXME( "IoCreateDevice %s got %x\n", debugstr_w(name.Buffer), status );
297 RtlFreeUnicodeString( &name );
302 /* delete the disk device for a given drive */
303 static void delete_disk_device( struct disk_device *device )
305 TRACE( "deleting device %s\n", debugstr_w(device->name.Buffer) );
306 if (device->symlink.Buffer)
308 IoDeleteSymbolicLink( &device->symlink );
309 RtlFreeUnicodeString( &device->symlink );
311 RtlFreeHeap( GetProcessHeap(), 0, device->unix_device );
312 RtlFreeHeap( GetProcessHeap(), 0, device->unix_mount );
313 RtlFreeUnicodeString( &device->name );
314 IoDeleteDevice( device->dev_obj );
317 /* grab another reference to a volume */
318 static struct volume *grab_volume( struct volume *volume )
324 /* release a volume and delete the corresponding disk device when refcount is 0 */
325 static unsigned int release_volume( struct volume *volume )
327 unsigned int ret = --volume->ref;
331 TRACE( "%s udi %s\n", debugstr_guid(&volume->guid), debugstr_a(volume->udi) );
332 assert( !volume->udi );
333 list_remove( &volume->entry );
334 if (volume->mount) delete_mount_point( volume->mount );
335 delete_disk_device( volume->device );
336 RtlFreeHeap( GetProcessHeap(), 0, volume );
341 /* set the volume udi */
342 static void set_volume_udi( struct volume *volume, const char *udi )
346 assert( !volume->udi );
347 /* having a udi means the HAL side holds an extra reference */
348 if ((volume->udi = strdupA( udi ))) grab_volume( volume );
350 else if (volume->udi)
352 RtlFreeHeap( GetProcessHeap(), 0, volume->udi );
354 release_volume( volume );
358 /* create a disk volume */
359 static NTSTATUS create_volume( const char *udi, enum device_type type, struct volume **volume_ret )
361 struct volume *volume;
364 if (!(volume = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*volume) )))
365 return STATUS_NO_MEMORY;
367 if (!(status = create_disk_device( type, &volume->device )))
369 if (udi) set_volume_udi( volume, udi );
370 list_add_tail( &volumes_list, &volume->entry );
371 *volume_ret = grab_volume( volume );
373 else RtlFreeHeap( GetProcessHeap(), 0, volume );
378 /* create the disk device for a given volume */
379 static NTSTATUS create_dos_device( struct volume *volume, const char *udi, int letter,
380 enum device_type type, struct dos_drive **drive_ret )
382 struct dos_drive *drive;
385 if (!(drive = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*drive) ))) return STATUS_NO_MEMORY;
386 drive->drive = letter;
391 if (udi) set_volume_udi( volume, udi );
392 drive->volume = grab_volume( volume );
393 status = STATUS_SUCCESS;
395 else status = create_volume( udi, type, &drive->volume );
397 if (status == STATUS_SUCCESS)
399 list_add_tail( &drives_list, &drive->entry );
402 else RtlFreeHeap( GetProcessHeap(), 0, drive );
407 /* delete the disk device for a given drive */
408 static void delete_dos_device( struct dos_drive *drive )
410 list_remove( &drive->entry );
411 if (drive->mount) delete_mount_point( drive->mount );
412 release_volume( drive->volume );
413 RtlFreeHeap( GetProcessHeap(), 0, drive );
416 /* find a volume that matches the parameters */
417 static struct volume *find_matching_volume( const char *udi, const char *device,
418 const char *mount_point, enum device_type type )
420 struct volume *volume;
421 struct disk_device *disk_device;
423 LIST_FOR_EACH_ENTRY( volume, &volumes_list, struct volume, entry )
425 /* when we have a udi we only match drives added manually */
426 if (udi && volume->udi) continue;
427 /* and when we don't have a udi we only match dynamic drives */
428 if (!udi && !volume->udi) continue;
430 disk_device = volume->device;
431 if (disk_device->type != type) continue;
432 if (device && disk_device->unix_device && strcmp( device, disk_device->unix_device )) continue;
433 if (mount_point && disk_device->unix_mount && strcmp( mount_point, disk_device->unix_mount )) continue;
434 TRACE( "found matching volume %s for device %s mount %s type %u\n",
435 debugstr_guid(&volume->guid), debugstr_a(device), debugstr_a(mount_point), type );
436 return grab_volume( volume );
441 /* change the information for an existing volume */
442 static NTSTATUS set_volume_info( struct volume *volume, struct dos_drive *drive, const char *device,
443 const char *mount_point, enum device_type type, const GUID *guid )
446 unsigned int id_len = 0;
447 struct disk_device *disk_device = volume->device;
450 if (type != disk_device->type)
452 if ((status = create_disk_device( type, &disk_device ))) return status;
455 delete_mount_point( volume->mount );
456 volume->mount = NULL;
458 if (drive && drive->mount)
460 delete_mount_point( drive->mount );
463 delete_disk_device( volume->device );
464 volume->device = disk_device;
468 RtlFreeHeap( GetProcessHeap(), 0, disk_device->unix_device );
469 RtlFreeHeap( GetProcessHeap(), 0, disk_device->unix_mount );
471 disk_device->unix_device = strdupA( device );
472 disk_device->unix_mount = strdupA( mount_point );
474 if (guid && memcmp( &volume->guid, guid, sizeof(volume->guid) ))
476 volume->guid = *guid;
479 delete_mount_point( volume->mount );
480 volume->mount = NULL;
485 volume->mount = add_volume_mount_point( disk_device->dev_obj, &disk_device->name, &volume->guid );
486 if (drive && !drive->mount)
487 drive->mount = add_dosdev_mount_point( disk_device->dev_obj, &disk_device->name, drive->drive );
489 if (disk_device->unix_mount)
491 id = disk_device->unix_mount;
492 id_len = strlen( disk_device->unix_mount ) + 1;
494 if (volume->mount) set_mount_point_id( volume->mount, id, id_len );
495 if (drive && drive->mount) set_mount_point_id( drive->mount, id, id_len );
497 return STATUS_SUCCESS;
500 /* change the drive letter or volume for an existing drive */
501 static void set_drive_info( struct dos_drive *drive, int letter, struct volume *volume )
503 if (drive->drive != letter)
505 if (drive->mount) delete_mount_point( drive->mount );
507 drive->drive = letter;
509 if (drive->volume != volume)
511 if (drive->mount) delete_mount_point( drive->mount );
513 grab_volume( volume );
514 release_volume( drive->volume );
515 drive->volume = volume;
519 static inline int is_valid_device( struct stat *st )
521 #if defined(linux) || defined(__sun__)
522 return S_ISBLK( st->st_mode );
524 /* disks are char devices on *BSD */
525 return S_ISCHR( st->st_mode );
529 /* find or create a DOS drive for the corresponding device */
530 static int add_drive( const char *device, enum device_type type )
534 struct stat dev_st, drive_st;
535 int drive, first, last, avail = 0;
537 if (stat( device, &dev_st ) == -1 || !is_valid_device( &dev_st )) return -1;
539 if (!(path = get_dosdevices_path( &p ))) return -1;
541 memset( in_use, 0, sizeof(in_use) );
563 for (drive = first; drive < last; drive++)
565 if (in_use[drive]) continue; /* already checked */
567 if (stat( path, &drive_st ) == -1)
569 if (lstat( path, &drive_st ) == -1 && errno == ENOENT) /* this is a candidate */
574 /* if mount point symlink doesn't exist either, it's available */
575 if (lstat( path, &drive_st ) == -1 && errno == ENOENT) avail = drive;
579 else in_use[drive] = 1;
584 if (!is_valid_device( &drive_st )) continue;
585 if (dev_st.st_rdev == drive_st.st_rdev) goto done;
590 /* try to use the one we found */
593 if (symlink( device, path ) != -1) goto done;
594 /* failed, retry the search */
600 HeapFree( GetProcessHeap(), 0, path );
604 /* create devices for mapped drives */
605 static void create_drive_devices(void)
607 char *path, *p, *link, *device;
608 struct dos_drive *drive;
609 struct volume *volume;
612 enum device_type drive_type;
613 WCHAR driveW[] = {'a',':',0};
615 if (!(path = get_dosdevices_path( &p ))) return;
616 if (RegOpenKeyW( HKEY_LOCAL_MACHINE, drives_keyW, &drives_key )) drives_key = 0;
618 for (i = 0; i < MAX_DOS_DRIVES; i++)
622 if (!(link = read_symlink( path ))) continue;
624 device = read_symlink( path );
626 drive_type = i < 2 ? DEVICE_FLOPPY : DEVICE_HARDDISK_VOL;
630 DWORD j, type, size = sizeof(buffer);
633 if (!RegQueryValueExW( drives_key, driveW, NULL, &type, (BYTE *)buffer, &size ) &&
636 for (j = 0; j < sizeof(drive_types)/sizeof(drive_types[0]); j++)
637 if (drive_types[j][0] && !strcmpiW( buffer, drive_types[j] ))
642 if (drive_type == DEVICE_FLOPPY && i >= 2) drive_type = DEVICE_HARDDISK;
646 volume = find_matching_volume( NULL, device, link, drive_type );
647 if (!create_dos_device( volume, NULL, i, drive_type, &drive ))
649 /* don't reset uuid if we used an existing volume */
650 const GUID *guid = volume ? NULL : get_default_uuid(i);
651 set_volume_info( drive->volume, drive, device, link, drive_type, guid );
655 RtlFreeHeap( GetProcessHeap(), 0, link );
656 RtlFreeHeap( GetProcessHeap(), 0, device );
658 if (volume) release_volume( volume );
660 RegCloseKey( drives_key );
661 RtlFreeHeap( GetProcessHeap(), 0, path );
664 /* create a new disk volume */
665 NTSTATUS add_volume( const char *udi, const char *device, const char *mount_point,
666 enum device_type type, const GUID *guid )
668 struct volume *volume;
669 NTSTATUS status = STATUS_SUCCESS;
671 TRACE( "adding %s device %s mount %s type %u uuid %s\n", debugstr_a(udi),
672 debugstr_a(device), debugstr_a(mount_point), type, debugstr_guid(guid) );
674 EnterCriticalSection( &device_section );
675 LIST_FOR_EACH_ENTRY( volume, &volumes_list, struct volume, entry )
676 if (volume->udi && !strcmp( udi, volume->udi ))
678 grab_volume( volume );
682 /* udi not found, search for a non-dynamic volume */
683 if ((volume = find_matching_volume( udi, device, mount_point, type ))) set_volume_udi( volume, udi );
684 else status = create_volume( udi, type, &volume );
687 if (!status) status = set_volume_info( volume, NULL, device, mount_point, type, guid );
688 if (volume) release_volume( volume );
689 LeaveCriticalSection( &device_section );
693 /* create a new disk volume */
694 NTSTATUS remove_volume( const char *udi )
696 NTSTATUS status = STATUS_NO_SUCH_DEVICE;
697 struct volume *volume;
699 EnterCriticalSection( &device_section );
700 LIST_FOR_EACH_ENTRY( volume, &volumes_list, struct volume, entry )
702 if (!volume->udi || strcmp( udi, volume->udi )) continue;
703 set_volume_udi( volume, NULL );
704 status = STATUS_SUCCESS;
707 LeaveCriticalSection( &device_section );
712 /* create a new dos drive */
713 NTSTATUS add_dos_device( int letter, const char *udi, const char *device,
714 const char *mount_point, enum device_type type, const GUID *guid )
718 NTSTATUS status = STATUS_SUCCESS;
719 struct dos_drive *drive, *next;
720 struct volume *volume;
723 if (!(path = get_dosdevices_path( &p ))) return STATUS_NO_MEMORY;
725 EnterCriticalSection( &device_section );
726 volume = find_matching_volume( udi, device, mount_point, type );
728 if (letter == -1) /* auto-assign a letter */
730 letter = add_drive( device, type );
733 status = STATUS_OBJECT_NAME_COLLISION;
737 LIST_FOR_EACH_ENTRY_SAFE( drive, next, &drives_list, struct dos_drive, entry )
739 if (drive->volume->udi && !strcmp( udi, drive->volume->udi )) goto found;
740 if (drive->drive == letter) delete_dos_device( drive );
743 else /* simply reset the device symlink */
745 LIST_FOR_EACH_ENTRY( drive, &drives_list, struct dos_drive, entry )
746 if (drive->drive == letter) break;
749 if (&drive->entry == &drives_list) update_symlink( path, device, NULL );
752 update_symlink( path, device, drive->volume->device->unix_device );
753 delete_dos_device( drive );
757 if ((status = create_dos_device( volume, udi, letter, type, &drive ))) goto done;
760 if (!guid && !volume) guid = get_default_uuid( letter );
761 if (!volume) volume = grab_volume( drive->volume );
762 set_drive_info( drive, letter, volume );
763 p[0] = 'a' + drive->drive;
765 update_symlink( path, mount_point, volume->device->unix_mount );
766 set_volume_info( volume, drive, device, mount_point, type, guid );
768 TRACE( "added device %c: udi %s for %s on %s type %u\n",
769 'a' + drive->drive, wine_dbgstr_a(udi), wine_dbgstr_a(device),
770 wine_dbgstr_a(mount_point), type );
772 /* hack: force the drive type in the registry */
773 if (!RegCreateKeyW( HKEY_LOCAL_MACHINE, drives_keyW, &hkey ))
775 const WCHAR *type_name = drive_types[type];
776 WCHAR name[3] = {'a',':',0};
778 name[0] += drive->drive;
779 if (!type_name[0] && type == DEVICE_HARDDISK) type_name = drive_types[DEVICE_FLOPPY];
781 RegSetValueExW( hkey, name, 0, REG_SZ, (const BYTE *)type_name,
782 (strlenW(type_name) + 1) * sizeof(WCHAR) );
784 RegDeleteValueW( hkey, name );
788 if (udi) notify = drive->drive;
791 if (volume) release_volume( volume );
792 LeaveCriticalSection( &device_section );
793 RtlFreeHeap( GetProcessHeap(), 0, path );
794 if (notify != -1) send_notify( notify, DBT_DEVICEARRIVAL );
798 /* remove an existing dos drive, by letter or udi */
799 NTSTATUS remove_dos_device( int letter, const char *udi )
801 NTSTATUS status = STATUS_NO_SUCH_DEVICE;
803 struct dos_drive *drive;
807 EnterCriticalSection( &device_section );
808 LIST_FOR_EACH_ENTRY( drive, &drives_list, struct dos_drive, entry )
812 if (!drive->volume->udi) continue;
813 if (strcmp( udi, drive->volume->udi )) continue;
814 set_volume_udi( drive->volume, NULL );
816 else if (drive->drive != letter) continue;
818 if ((path = get_dosdevices_path( &p )))
820 p[0] = 'a' + drive->drive;
823 RtlFreeHeap( GetProcessHeap(), 0, path );
826 /* clear the registry key too */
827 if (!RegOpenKeyW( HKEY_LOCAL_MACHINE, drives_keyW, &hkey ))
829 WCHAR name[3] = {'a',':',0};
830 name[0] += drive->drive;
831 RegDeleteValueW( hkey, name );
835 if (udi && drive->volume->device->unix_mount) notify = drive->drive;
837 delete_dos_device( drive );
838 status = STATUS_SUCCESS;
841 LeaveCriticalSection( &device_section );
842 if (notify != -1) send_notify( notify, DBT_DEVICEREMOVECOMPLETE );
846 /* query information about an existing dos drive, by letter or udi */
847 NTSTATUS query_dos_device( int letter, enum device_type *type, char **device, char **mount_point )
849 NTSTATUS status = STATUS_NO_SUCH_DEVICE;
850 struct dos_drive *drive;
851 struct disk_device *disk_device;
853 EnterCriticalSection( &device_section );
854 LIST_FOR_EACH_ENTRY( drive, &drives_list, struct dos_drive, entry )
856 if (drive->drive != letter) continue;
857 disk_device = drive->volume->device;
858 if (type) *type = disk_device->type;
859 if (device) *device = strdupA( disk_device->unix_device );
860 if (mount_point) *mount_point = strdupA( disk_device->unix_mount );
861 status = STATUS_SUCCESS;
864 LeaveCriticalSection( &device_section );
868 /* handler for ioctls on the harddisk device */
869 static NTSTATUS WINAPI harddisk_ioctl( DEVICE_OBJECT *device, IRP *irp )
871 IO_STACK_LOCATION *irpsp = IoGetCurrentIrpStackLocation( irp );
872 struct disk_device *dev = device->DeviceExtension;
874 TRACE( "ioctl %x insize %u outsize %u\n",
875 irpsp->Parameters.DeviceIoControl.IoControlCode,
876 irpsp->Parameters.DeviceIoControl.InputBufferLength,
877 irpsp->Parameters.DeviceIoControl.OutputBufferLength );
879 EnterCriticalSection( &device_section );
881 switch(irpsp->Parameters.DeviceIoControl.IoControlCode)
883 case IOCTL_DISK_GET_DRIVE_GEOMETRY:
886 DWORD len = min( sizeof(info), irpsp->Parameters.DeviceIoControl.OutputBufferLength );
888 info.Cylinders.QuadPart = 10000;
889 info.MediaType = (dev->devnum.DeviceType == FILE_DEVICE_DISK) ? FixedMedia : RemovableMedia;
890 info.TracksPerCylinder = 255;
891 info.SectorsPerTrack = 63;
892 info.BytesPerSector = 512;
893 memcpy( irp->MdlAddress->StartVa, &info, len );
894 irp->IoStatus.Information = len;
895 irp->IoStatus.u.Status = STATUS_SUCCESS;
898 case IOCTL_STORAGE_GET_DEVICE_NUMBER:
900 DWORD len = min( sizeof(dev->devnum), irpsp->Parameters.DeviceIoControl.OutputBufferLength );
902 memcpy( irp->MdlAddress->StartVa, &dev->devnum, len );
903 irp->IoStatus.Information = len;
904 irp->IoStatus.u.Status = STATUS_SUCCESS;
907 case IOCTL_CDROM_READ_TOC:
908 irp->IoStatus.u.Status = STATUS_INVALID_DEVICE_REQUEST;
910 case IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS:
912 DWORD len = min( 32, irpsp->Parameters.DeviceIoControl.OutputBufferLength );
914 FIXME( "returning zero-filled buffer for IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS\n" );
915 memset( irp->MdlAddress->StartVa, 0, len );
916 irp->IoStatus.Information = len;
917 irp->IoStatus.u.Status = STATUS_SUCCESS;
921 FIXME( "unsupported ioctl %x\n", irpsp->Parameters.DeviceIoControl.IoControlCode );
922 irp->IoStatus.u.Status = STATUS_NOT_SUPPORTED;
926 LeaveCriticalSection( &device_section );
927 IoCompleteRequest( irp, IO_NO_INCREMENT );
928 return irp->IoStatus.u.Status;
931 /* driver entry point for the harddisk driver */
932 NTSTATUS WINAPI harddisk_driver_entry( DRIVER_OBJECT *driver, UNICODE_STRING *path )
934 struct disk_device *device;
936 harddisk_driver = driver;
937 driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = harddisk_ioctl;
939 /* create a harddisk0 device that isn't assigned to any drive */
940 create_disk_device( DEVICE_HARDDISK, &device );
942 create_drive_devices();
944 return STATUS_SUCCESS;