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mountmgr: Add support for creating volumes without an associated drive.

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This commit is contained in:
Alexandre Julliard 2009-07-21 20:30:43 +02:00
parent da86ab71fa
commit 22f58341dc
2 changed files with 94 additions and 0 deletions
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91
dlls/mountmgr.sys/device.c
View file

@ -84,6 +84,7 @@ struct dos_drive
};
static struct list drives_list = LIST_INIT(drives_list);
static struct list volumes_list = LIST_INIT(volumes_list);
static DRIVER_OBJECT *harddisk_driver;
@ -300,6 +301,7 @@ static NTSTATUS create_volume( const char *udi, enum device_type type, struct vo
}
if (!(status = create_disk_device( type, &volume->device )))
{
list_add_tail( &volumes_list, &volume->entry );
*volume_ret = volume;
}
else
@ -313,6 +315,7 @@ static NTSTATUS create_volume( const char *udi, enum device_type type, struct vo
/* delete a volume and the corresponding disk device */
static void delete_volume( struct volume *volume )
{
list_remove( &volume->entry );
if (volume->mount) delete_mount_point( volume->mount );
delete_disk_device( volume->device );
RtlFreeHeap( GetProcessHeap(), 0, volume->udi );
@ -348,6 +351,60 @@ static void delete_dos_device( struct dos_drive *drive )
RtlFreeHeap( GetProcessHeap(), 0, drive );
}
/* change the information for an existing volume */
static NTSTATUS set_volume_info( struct volume *volume, const char *device, const char *mount_point,
enum device_type type, const GUID *guid )
{
struct disk_device *disk_device = volume->device;
NTSTATUS status;
if (type != disk_device->type)
{
if ((status = create_disk_device( type, &disk_device ))) return status;
if (volume->mount)
{
delete_mount_point( volume->mount );
volume->mount = NULL;
}
delete_disk_device( volume->device );
volume->device = disk_device;
}
else
{
RtlFreeHeap( GetProcessHeap(), 0, disk_device->unix_device );
RtlFreeHeap( GetProcessHeap(), 0, disk_device->unix_mount );
}
disk_device->unix_device = strdupA( device );
disk_device->unix_mount = strdupA( mount_point );
if (memcmp( &volume->guid, guid, sizeof(volume->guid) ))
{
volume->guid = *guid;
if (volume->mount)
{
delete_mount_point( volume->mount );
volume->mount = NULL;
}
}
if (!volume->mount)
volume->mount = add_volume_mount_point( disk_device->dev_obj, &disk_device->name, &volume->guid );
if (volume->mount)
{
void *id = NULL;
unsigned int id_len = 0;
if (disk_device->unix_mount)
{
id = disk_device->unix_mount;
id_len = strlen( disk_device->unix_mount ) + 1;
}
set_mount_point_id( volume->mount, id, id_len );
}
return STATUS_SUCCESS;
}
/* set or change the drive letter for an existing drive */
static void set_drive_letter( struct dos_drive *drive, int letter )
{
@ -551,6 +608,40 @@ static void create_drive_devices(void)
RtlFreeHeap( GetProcessHeap(), 0, path );
}
/* create a new disk volume */
NTSTATUS add_volume( const char *udi, const char *device, const char *mount_point,
enum device_type type, const GUID *guid )
{
struct volume *volume;
NTSTATUS status;
TRACE( "adding %s device %s mount %s type %u uuid %s\n", debugstr_a(udi),
debugstr_a(device), debugstr_a(mount_point), type, debugstr_guid(guid) );
LIST_FOR_EACH_ENTRY( volume, &volumes_list, struct volume, entry )
if (volume->udi && !strcmp( udi, volume->udi )) goto found;
if ((status = create_volume( udi, type, &volume ))) return status;
found:
return set_volume_info( volume, device, mount_point, type, guid );
}
/* create a new disk volume */
NTSTATUS remove_volume( const char *udi )
{
struct volume *volume;
LIST_FOR_EACH_ENTRY( volume, &volumes_list, struct volume, entry )
{
if (!volume->udi || strcmp( udi, volume->udi )) continue;
delete_volume( volume );
return STATUS_SUCCESS;
}
return STATUS_NO_SUCH_DEVICE;
}
/* create a new dos drive */
NTSTATUS add_dos_device( int letter, const char *udi, const char *device,
const char *mount_point, enum device_type type, const GUID *guid )

3
dlls/mountmgr.sys/mountmgr.h
View file

@ -51,6 +51,9 @@ enum device_type
DEVICE_RAMDISK
};
extern NTSTATUS add_volume( const char *udi, const char *device, const char *mount_point,
enum device_type type, const GUID *guid );
extern NTSTATUS remove_volume( const char *udi );
extern NTSTATUS add_dos_device( int letter, const char *udi, const char *device,
const char *mount_point, enum device_type type, const GUID *guid );
extern NTSTATUS remove_dos_device( int letter, const char *udi );