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mountmgr: Create devices and symlinks for dynamic drives too.

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This commit is contained in:
Alexandre Julliard 2008-10-21 15:20:09 +02:00
parent 7033120f83
commit f36690d44a
3 changed files with 158 additions and 89 deletions
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235
dlls/mountmgr.sys/device.c
View File

@ -52,21 +52,24 @@ static const WCHAR drive_types[][8] =
{'r','a','m','d','i','s','k',0} /* DRIVE_RAMDISK */
};
/* extra info for disk devices, stored in DeviceExtension */
struct disk_device_info
{
STORAGE_DEVICE_NUMBER devnum; /* device number info */
};
struct dos_drive
{
struct list entry;
char *udi;
int drive;
struct list entry; /* entry in drives list */
char *udi; /* unique identifier for dynamic drives */
int drive; /* drive letter (0 = A: etc.) */
DWORD type; /* drive type */
DEVICE_OBJECT *device; /* disk device allocated for this drive */
UNICODE_STRING name; /* device name */
STORAGE_DEVICE_NUMBER devnum; /* device number info */
struct mount_point *dosdev; /* DosDevices mount point */
struct mount_point *volume; /* Volume{xxx} mount point */
char *unix_mount; /* unix mount point path */
};
static struct list drives_list = LIST_INIT(drives_list);
static DRIVER_OBJECT *harddisk_driver;
static char *get_dosdevices_path(void)
{
const char *config_dir = wine_get_config_dir();
@ -124,8 +127,8 @@ static void send_notify( int drive, int code )
WM_DEVICECHANGE, code, (LPARAM)&info );
}
static NTSTATUS create_disk_device( DRIVER_OBJECT *driver, DWORD type, DEVICE_OBJECT **dev_obj,
UNICODE_STRING *device_name )
/* create the disk device for a given drive */
static NTSTATUS create_disk_device( const char *udi, DWORD type, struct dos_drive **drive_ret )
{
static const WCHAR harddiskW[] = {'\\','D','e','v','i','c','e',
'\\','H','a','r','d','d','i','s','k','V','o','l','u','m','e','%','u',0};
@ -136,7 +139,8 @@ static NTSTATUS create_disk_device( DRIVER_OBJECT *driver, DWORD type, DEVICE_OB
NTSTATUS status = 0;
const WCHAR *format;
UNICODE_STRING name;
struct disk_device_info *info;
DEVICE_OBJECT *dev_obj;
struct dos_drive *drive;
switch(type)
{
@ -159,32 +163,51 @@ static NTSTATUS create_disk_device( DRIVER_OBJECT *driver, DWORD type, DEVICE_OB
{
sprintfW( name.Buffer, format, i );
name.Length = strlenW(name.Buffer) * sizeof(WCHAR);
status = IoCreateDevice( driver, sizeof(*info), &name, 0, 0, FALSE, dev_obj );
status = IoCreateDevice( harddisk_driver, sizeof(*drive), &name, 0, 0, FALSE, &dev_obj );
if (status != STATUS_OBJECT_NAME_COLLISION) break;
}
if (!status)
{
info = (*dev_obj)->DeviceExtension;
*device_name = name;
switch(type)
drive = dev_obj->DeviceExtension;
drive->drive = -1;
drive->device = dev_obj;
drive->name = name;
drive->type = type;
drive->dosdev = NULL;
drive->volume = NULL;
drive->unix_mount = NULL;
if (udi)
{
if (!(drive->udi = HeapAlloc( GetProcessHeap(), 0, strlen(udi)+1 )))
{
RtlFreeUnicodeString( &name );
IoDeleteDevice( drive->device );
return STATUS_NO_MEMORY;
}
strcpy( drive->udi, udi );
}
switch (type)
{
case DRIVE_REMOVABLE:
info->devnum.DeviceType = FILE_DEVICE_DISK;
info->devnum.DeviceNumber = i;
info->devnum.PartitionNumber = ~0u;
drive->devnum.DeviceType = FILE_DEVICE_DISK;
drive->devnum.DeviceNumber = i;
drive->devnum.PartitionNumber = ~0u;
break;
case DRIVE_CDROM:
info->devnum.DeviceType = FILE_DEVICE_CD_ROM;
info->devnum.DeviceNumber = i;
info->devnum.PartitionNumber = ~0u;
drive->devnum.DeviceType = FILE_DEVICE_CD_ROM;
drive->devnum.DeviceNumber = i;
drive->devnum.PartitionNumber = ~0u;
break;
case DRIVE_FIXED:
default: /* FIXME */
info->devnum.DeviceType = FILE_DEVICE_DISK;
info->devnum.DeviceNumber = 0;
info->devnum.PartitionNumber = i;
drive->devnum.DeviceType = FILE_DEVICE_DISK;
drive->devnum.DeviceNumber = 0;
drive->devnum.PartitionNumber = i;
break;
}
list_add_tail( &drives_list, &drive->entry );
*drive_ret = drive;
TRACE( "created device %s\n", debugstr_w(name.Buffer) );
}
else
{
@ -194,6 +217,38 @@ static NTSTATUS create_disk_device( DRIVER_OBJECT *driver, DWORD type, DEVICE_OB
return status;
}
/* delete the disk device for a given drive */
static void delete_disk_device( struct dos_drive *drive )
{
TRACE( "deleting device %s\n", debugstr_w(drive->name.Buffer) );
list_remove( &drive->entry );
if (drive->dosdev) delete_mount_point( drive->dosdev );
if (drive->volume) delete_mount_point( drive->volume );
RtlFreeHeap( GetProcessHeap(), 0, drive->unix_mount );
RtlFreeHeap( GetProcessHeap(), 0, drive->udi );
RtlFreeUnicodeString( &drive->name );
IoDeleteDevice( drive->device );
}
/* set or change the drive letter for an existing drive */
static void set_drive_letter( struct dos_drive *drive, int letter )
{
void *id = NULL;
unsigned int id_len = 0;
if (drive->drive == letter) return;
if (drive->dosdev) delete_mount_point( drive->dosdev );
if (drive->volume) delete_mount_point( drive->volume );
drive->drive = letter;
if (letter == -1) return;
if (drive->unix_mount)
{
id = drive->unix_mount;
id_len = strlen( drive->unix_mount ) + 1;
}
drive->dosdev = add_dosdev_mount_point( drive->device, &drive->name, letter, id, id_len );
drive->volume = add_volume_mount_point( drive->device, &drive->name, letter, id, id_len );
}
static inline int is_valid_device( struct stat *st )
{
@ -272,98 +327,97 @@ done:
return drive;
}
static BOOL set_mount_point( struct dos_drive *drive, const char *mount_point )
static BOOL set_unix_mount_point( struct dos_drive *drive, const char *mount_point )
{
char *path, *p;
struct stat path_st, mnt_st;
BOOL modified = FALSE;
if (drive->drive == -1) return FALSE;
if (!(path = get_dosdevices_path())) return FALSE;
p = path + strlen(path) - 3;
*p = 'a' + drive->drive;
p[0] = 'a' + drive->drive;
p[2] = 0;
if (mount_point[0])
if (mount_point && mount_point[0])
{
/* try to avoid unlinking if already set correctly */
if (stat( path, &path_st ) == -1 || stat( mount_point, &mnt_st ) == -1 ||
path_st.st_dev != mnt_st.st_dev || path_st.st_ino != mnt_st.st_ino)
if (!drive->unix_mount || strcmp( drive->unix_mount, mount_point ))
{
unlink( path );
symlink( mount_point, path );
modified = TRUE;
}
RtlFreeHeap( GetProcessHeap(), 0, drive->unix_mount );
if ((drive->unix_mount = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mount_point) + 1 )))
strcpy( drive->unix_mount, mount_point );
if (drive->dosdev) set_mount_point_id( drive->dosdev, mount_point, strlen(mount_point) + 1 );
if (drive->volume) set_mount_point_id( drive->volume, mount_point, strlen(mount_point) + 1 );
}
else
{
if (unlink( path ) != -1) modified = TRUE;
RtlFreeHeap( GetProcessHeap(), 0, drive->unix_mount );
drive->unix_mount = NULL;
if (drive->dosdev) set_mount_point_id( drive->dosdev, NULL, 0 );
if (drive->volume) set_mount_point_id( drive->volume, NULL, 0 );
}
HeapFree( GetProcessHeap(), 0, path );
return modified;
}
/* create mount points for mapped drives */
static void create_drive_mount_points( DRIVER_OBJECT *driver )
/* create devices for mapped drives */
static void create_drive_devices(void)
{
const char *config_dir = wine_get_config_dir();
char *buffer, *p, *link;
char *path, *p, *link;
struct dos_drive *drive;
unsigned int i;
DEVICE_OBJECT *device;
UNICODE_STRING device_name;
if ((buffer = RtlAllocateHeap( GetProcessHeap(), 0,
strlen(config_dir) + sizeof("/dosdevices/a:") )))
if (!(path = get_dosdevices_path())) return;
p = path + strlen(path) - 3;
for (i = 0; i < MAX_DOS_DRIVES; i++)
{
strcpy( buffer, config_dir );
strcat( buffer, "/dosdevices/a:" );
p = buffer + strlen(buffer) - 2;
for (i = 0; i < MAX_DOS_DRIVES; i++)
p[0] = 'a' + i;
p[2] = 0;
if (!(link = read_symlink( path ))) continue;
if (!create_disk_device( NULL, i < 2 ? DRIVE_REMOVABLE : DRIVE_FIXED, &drive ))
{
*p = 'a' + i;
if (!(link = read_symlink( buffer ))) continue;
if (!create_disk_device( driver, DRIVE_FIXED, &device, &device_name ))
{
add_dosdev_mount_point( device, &device_name, i, link, strlen(link) + 1 );
add_volume_mount_point( device, &device_name, i, link, strlen(link) + 1 );
RtlFreeUnicodeString( &device_name );
}
RtlFreeHeap( GetProcessHeap(), 0, link );
drive->unix_mount = link;
set_drive_letter( drive, i );
}
RtlFreeHeap( GetProcessHeap(), 0, buffer );
else RtlFreeHeap( GetProcessHeap(), 0, link );
}
RtlFreeHeap( GetProcessHeap(), 0, path );
}
BOOL add_dos_device( const char *udi, const char *device,
const char *mount_point, DWORD type )
BOOL add_dos_device( const char *udi, const char *device, const char *mount_point, DWORD type )
{
struct dos_drive *drive;
struct dos_drive *drive, *next;
int letter = add_drive( device, type );
/* first check if it already exists */
LIST_FOR_EACH_ENTRY( drive, &drives_list, struct dos_drive, entry )
if (letter == -1) return FALSE;
LIST_FOR_EACH_ENTRY_SAFE( drive, next, &drives_list, struct dos_drive, entry )
{
if (!strcmp( udi, drive->udi )) goto found;
if (drive->udi && !strcmp( udi, drive->udi ))
{
if (type == drive->type) goto found;
delete_disk_device( drive );
continue;
}
if (drive->drive == letter) delete_disk_device( drive );
}
if (!(drive = HeapAlloc( GetProcessHeap(), 0, sizeof(*drive) ))) return FALSE;
if (!(drive->udi = HeapAlloc( GetProcessHeap(), 0, strlen(udi)+1 )))
{
HeapFree( GetProcessHeap(), 0, drive );
return FALSE;
}
strcpy( drive->udi, udi );
list_add_tail( &drives_list, &drive->entry );
if (create_disk_device( udi, type, &drive )) return FALSE;
found:
drive->drive = add_drive( device, type );
set_drive_letter( drive, letter );
set_unix_mount_point( drive, mount_point );
if (drive->drive != -1)
{
HKEY hkey;
set_mount_point( drive, mount_point );
TRACE( "added device %c: udi %s for %s on %s type %u\n",
'a' + drive->drive, wine_dbgstr_a(udi), wine_dbgstr_a(device),
wine_dbgstr_a(mount_point), type );
@ -395,11 +449,11 @@ BOOL remove_dos_device( const char *udi )
LIST_FOR_EACH_ENTRY( drive, &drives_list, struct dos_drive, entry )
{
if (strcmp( udi, drive->udi )) continue;
if (!drive->udi || strcmp( udi, drive->udi )) continue;
if (drive->drive != -1)
{
BOOL modified = set_mount_point( drive, "" );
BOOL modified = set_unix_mount_point( drive, NULL );
/* clear the registry key too */
if (!RegOpenKeyA( HKEY_LOCAL_MACHINE, "Software\\Wine\\Drives", &hkey ))
@ -412,10 +466,7 @@ BOOL remove_dos_device( const char *udi )
if (modified) send_notify( drive->drive, DBT_DEVICEREMOVECOMPLETE );
}
list_remove( &drive->entry );
HeapFree( GetProcessHeap(), 0, drive->udi );
HeapFree( GetProcessHeap(), 0, drive );
delete_disk_device( drive );
return TRUE;
}
return FALSE;
@ -425,7 +476,7 @@ BOOL remove_dos_device( const char *udi )
static NTSTATUS WINAPI harddisk_ioctl( DEVICE_OBJECT *device, IRP *irp )
{
IO_STACK_LOCATION *irpsp = irp->Tail.Overlay.s.u.CurrentStackLocation;
struct disk_device_info *disk_info = device->DeviceExtension;
struct dos_drive *drive = device->DeviceExtension;
TRACE( "ioctl %x insize %u outsize %u\n",
irpsp->Parameters.DeviceIoControl.IoControlCode,
@ -440,7 +491,7 @@ static NTSTATUS WINAPI harddisk_ioctl( DEVICE_OBJECT *device, IRP *irp )
DWORD len = min( sizeof(info), irpsp->Parameters.DeviceIoControl.OutputBufferLength );
info.Cylinders.QuadPart = 10000;
info.MediaType = (disk_info->devnum.DeviceType == FILE_DEVICE_DISK) ? FixedMedia : RemovableMedia;
info.MediaType = (drive->devnum.DeviceType == FILE_DEVICE_DISK) ? FixedMedia : RemovableMedia;
info.TracksPerCylinder = 255;
info.SectorsPerTrack = 63;
info.BytesPerSector = 512;
@ -451,9 +502,9 @@ static NTSTATUS WINAPI harddisk_ioctl( DEVICE_OBJECT *device, IRP *irp )
}
case IOCTL_STORAGE_GET_DEVICE_NUMBER:
{
DWORD len = min( sizeof(disk_info->devnum), irpsp->Parameters.DeviceIoControl.OutputBufferLength );
DWORD len = min( sizeof(drive->devnum), irpsp->Parameters.DeviceIoControl.OutputBufferLength );
memcpy( irp->MdlAddress->StartVa, &disk_info->devnum, len );
memcpy( irp->MdlAddress->StartVa, &drive->devnum, len );
irp->IoStatus.Information = len;
irp->IoStatus.u.Status = STATUS_SUCCESS;
break;
@ -479,25 +530,31 @@ NTSTATUS WINAPI harddisk_driver_entry( DRIVER_OBJECT *driver, UNICODE_STRING *pa
UNICODE_STRING nameW, linkW;
DEVICE_OBJECT *device;
NTSTATUS status;
struct disk_device_info *info;
struct dos_drive *drive;
harddisk_driver = driver;
driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = harddisk_ioctl;
RtlInitUnicodeString( &nameW, harddisk0W );
RtlInitUnicodeString( &linkW, physdrive0W );
if (!(status = IoCreateDevice( driver, sizeof(*info), &nameW, 0, 0, FALSE, &device )))
if (!(status = IoCreateDevice( driver, sizeof(*drive), &nameW, 0, 0, FALSE, &device )))
status = IoCreateSymbolicLink( &linkW, &nameW );
if (status)
{
FIXME( "failed to create device error %x\n", status );
return status;
}
info = device->DeviceExtension;
info->devnum.DeviceType = FILE_DEVICE_DISK;
info->devnum.DeviceNumber = 0;
info->devnum.PartitionNumber = 0;
drive = device->DeviceExtension;
drive->drive = -1;
drive->udi = NULL;
drive->type = DRIVE_FIXED;
drive->name = nameW;
drive->device = device;
drive->devnum.DeviceType = FILE_DEVICE_DISK;
drive->devnum.DeviceNumber = 0;
drive->devnum.PartitionNumber = 0;
create_drive_mount_points( driver );
create_drive_devices();
return status;
}

11
dlls/mountmgr.sys/mountmgr.c
View File

@ -120,6 +120,17 @@ struct mount_point *add_volume_mount_point( DEVICE_OBJECT *device, UNICODE_STRIN
return add_mount_point( device, device_name, link, id, id_len );
}
/* delete the mount point symlinks when a device goes away */
void delete_mount_point( struct mount_point *mount )
{
TRACE( "deleting %s\n", debugstr_w(mount->link.Buffer) );
list_remove( &mount->entry );
RegDeleteValueW( mount_key, mount->link.Buffer );
IoDeleteSymbolicLink( &mount->link );
RtlFreeHeap( GetProcessHeap(), 0, mount->id );
RtlFreeHeap( GetProcessHeap(), 0, mount );
}
/* check if a given mount point matches the requested specs */
static BOOL matching_mount_point( const struct mount_point *mount, const MOUNTMGR_MOUNT_POINT *spec )
{

1
dlls/mountmgr.sys/mountmgr.h
View File

@ -51,4 +51,5 @@ extern struct mount_point *add_dosdev_mount_point( DEVICE_OBJECT *device, UNICOD
int drive, const void *id, unsigned int id_len );
extern struct mount_point *add_volume_mount_point( DEVICE_OBJECT *device, UNICODE_STRING *device_name,
int drive, const void *id, unsigned int id_len );
extern void delete_mount_point( struct mount_point *mount );
extern void set_mount_point_id( struct mount_point *mount, const void *id, unsigned int id_len );