| /* |
| * Mount manager service implementation |
| * |
| * Copyright 2008 Alexandre Julliard |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #include <stdarg.h> |
| #include <unistd.h> |
| |
| #define NONAMELESSUNION |
| #define NONAMELESSSTRUCT |
| |
| #include "ntstatus.h" |
| #define WIN32_NO_STATUS |
| #include "windef.h" |
| #include "winbase.h" |
| #include "winternl.h" |
| #include "winioctl.h" |
| #include "winreg.h" |
| #include "ntddstor.h" |
| #include "ntddcdrm.h" |
| #include "ddk/wdm.h" |
| #include "ddk/mountmgr.h" |
| #include "wine/library.h" |
| #include "wine/unicode.h" |
| #include "wine/list.h" |
| #include "wine/debug.h" |
| #include "mountmgr.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(mountmgr); |
| |
| #define MIN_ID_LEN 4 |
| #define MAX_DOS_DRIVES 26 |
| |
| /* extra info for disk devices, stored in DeviceExtension */ |
| struct disk_device_info |
| { |
| STORAGE_DEVICE_NUMBER devnum; /* device number info */ |
| }; |
| |
| struct mount_point |
| { |
| struct list entry; /* entry in mount points list */ |
| DEVICE_OBJECT *device; /* disk device */ |
| UNICODE_STRING name; /* device name */ |
| UNICODE_STRING link; /* DOS device symlink */ |
| void *id; /* device unique id */ |
| unsigned int id_len; |
| }; |
| |
| static struct list mount_points_list = LIST_INIT(mount_points_list); |
| static HKEY mount_key; |
| |
| /* read a Unix symlink; returned buffer must be freed by caller */ |
| static char *read_symlink( const char *path ) |
| { |
| char *buffer; |
| int ret, size = 128; |
| |
| for (;;) |
| { |
| if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, size ))) |
| { |
| SetLastError( ERROR_NOT_ENOUGH_MEMORY ); |
| return 0; |
| } |
| ret = readlink( path, buffer, size ); |
| if (ret == -1) |
| { |
| RtlFreeHeap( GetProcessHeap(), 0, buffer ); |
| return 0; |
| } |
| if (ret != size) |
| { |
| buffer[ret] = 0; |
| return buffer; |
| } |
| RtlFreeHeap( GetProcessHeap(), 0, buffer ); |
| size *= 2; |
| } |
| } |
| |
| static NTSTATUS create_disk_device( DRIVER_OBJECT *driver, DWORD type, DEVICE_OBJECT **dev_obj, |
| UNICODE_STRING *device_name ) |
| { |
| 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}; |
| static const WCHAR cdromW[] = {'\\','D','e','v','i','c','e','\\','C','d','R','o','m','%','u',0}; |
| static const WCHAR floppyW[] = {'\\','D','e','v','i','c','e','\\','F','l','o','p','p','y','%','u',0}; |
| |
| UINT i, first = 0; |
| NTSTATUS status = 0; |
| const WCHAR *format; |
| UNICODE_STRING name; |
| struct disk_device_info *info; |
| |
| switch(type) |
| { |
| case DRIVE_REMOVABLE: |
| format = floppyW; |
| break; |
| case DRIVE_CDROM: |
| format = cdromW; |
| break; |
| case DRIVE_FIXED: |
| default: /* FIXME */ |
| format = harddiskW; |
| first = 1; /* harddisk volumes start counting from 1 */ |
| break; |
| } |
| |
| name.MaximumLength = (strlenW(format) + 10) * sizeof(WCHAR); |
| name.Buffer = RtlAllocateHeap( GetProcessHeap(), 0, name.MaximumLength ); |
| for (i = first; i < 32; i++) |
| { |
| sprintfW( name.Buffer, format, i ); |
| name.Length = strlenW(name.Buffer) * sizeof(WCHAR); |
| status = IoCreateDevice( driver, sizeof(*info), &name, 0, 0, FALSE, dev_obj ); |
| if (status != STATUS_OBJECT_NAME_COLLISION) break; |
| } |
| if (!status) |
| { |
| info = (*dev_obj)->DeviceExtension; |
| *device_name = name; |
| switch(type) |
| { |
| case DRIVE_REMOVABLE: |
| info->devnum.DeviceType = FILE_DEVICE_DISK; |
| info->devnum.DeviceNumber = i; |
| info->devnum.PartitionNumber = ~0u; |
| break; |
| case DRIVE_CDROM: |
| info->devnum.DeviceType = FILE_DEVICE_CD_ROM; |
| info->devnum.DeviceNumber = i; |
| info->devnum.PartitionNumber = ~0u; |
| break; |
| case DRIVE_FIXED: |
| default: /* FIXME */ |
| info->devnum.DeviceType = FILE_DEVICE_DISK; |
| info->devnum.DeviceNumber = 0; |
| info->devnum.PartitionNumber = i; |
| break; |
| } |
| } |
| else |
| { |
| FIXME( "IoCreateDevice %s got %x\n", debugstr_w(name.Buffer), status ); |
| RtlFreeUnicodeString( &name ); |
| } |
| return status; |
| } |
| |
| |
| static void set_mount_point_id( struct mount_point *mount, const void *id, unsigned int id_len ) |
| { |
| RtlFreeHeap( GetProcessHeap(), 0, mount->id ); |
| mount->id_len = max( MIN_ID_LEN, id_len ); |
| if ((mount->id = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, mount->id_len ))) |
| { |
| memcpy( mount->id, id, id_len ); |
| RegSetValueExW( mount_key, mount->link.Buffer, 0, REG_BINARY, mount->id, mount->id_len ); |
| } |
| else mount->id_len = 0; |
| } |
| |
| static struct mount_point *add_mount_point( DEVICE_OBJECT *device, UNICODE_STRING *device_name, |
| const WCHAR *link, const void *id, unsigned int id_len ) |
| { |
| struct mount_point *mount; |
| WCHAR *str; |
| UINT len = (strlenW(link) + 1) * sizeof(WCHAR) + device_name->Length + sizeof(WCHAR); |
| |
| if (!(mount = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*mount) + len ))) return NULL; |
| |
| str = (WCHAR *)(mount + 1); |
| strcpyW( str, link ); |
| RtlInitUnicodeString( &mount->link, str ); |
| str += strlenW(str) + 1; |
| memcpy( str, device_name->Buffer, device_name->Length ); |
| str[device_name->Length / sizeof(WCHAR)] = 0; |
| mount->name.Buffer = str; |
| mount->name.Length = device_name->Length; |
| mount->name.MaximumLength = device_name->Length + sizeof(WCHAR); |
| mount->device = device; |
| mount->id = NULL; |
| list_add_tail( &mount_points_list, &mount->entry ); |
| |
| IoCreateSymbolicLink( &mount->link, device_name ); |
| set_mount_point_id( mount, id, id_len ); |
| |
| TRACE( "created %s id %s for %s\n", debugstr_w(mount->link.Buffer), |
| debugstr_a(mount->id), debugstr_w(mount->name.Buffer) ); |
| return mount; |
| } |
| |
| /* create the DosDevices mount point symlink for a new device */ |
| static struct mount_point *add_dosdev_mount_point( DEVICE_OBJECT *device, UNICODE_STRING *device_name, |
| int drive, const void *id, unsigned int id_len ) |
| { |
| static const WCHAR driveW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','%','c',':',0}; |
| WCHAR link[sizeof(driveW)]; |
| |
| sprintfW( link, driveW, 'A' + drive ); |
| return add_mount_point( device, device_name, link, id, id_len ); |
| } |
| |
| /* create the Volume mount point symlink for a new device */ |
| static struct mount_point *add_volume_mount_point( DEVICE_OBJECT *device, UNICODE_STRING *device_name, |
| int drive, const void *id, unsigned int id_len ) |
| { |
| static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{', |
| '%','0','8','x','-','%','0','4','x','-','%','0','4','x','-', |
| '%','0','2','x','%','0','2','x','-','%','0','2','x','%','0','2','x', |
| '%','0','2','x','%','0','2','x','%','0','2','x','%','0','2','x','}',0}; |
| WCHAR link[sizeof(volumeW)]; |
| GUID guid; |
| |
| memset( &guid, 0, sizeof(guid) ); /* FIXME */ |
| guid.Data4[7] = 'A' + drive; |
| sprintfW( link, volumeW, guid.Data1, guid.Data2, guid.Data3, |
| guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3], |
| guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]); |
| return add_mount_point( device, device_name, link, id, id_len ); |
| } |
| |
| /* 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 ) |
| { |
| if (spec->SymbolicLinkNameOffset) |
| { |
| const WCHAR *name = (const WCHAR *)((const char *)spec + spec->SymbolicLinkNameOffset); |
| if (spec->SymbolicLinkNameLength != mount->link.Length) return FALSE; |
| if (memicmpW( name, mount->link.Buffer, mount->link.Length/sizeof(WCHAR))) |
| return FALSE; |
| } |
| if (spec->DeviceNameOffset) |
| { |
| const WCHAR *name = (const WCHAR *)((const char *)spec + spec->DeviceNameOffset); |
| if (spec->DeviceNameLength != mount->name.Length) return FALSE; |
| if (memicmpW( name, mount->name.Buffer, mount->name.Length/sizeof(WCHAR))) |
| return FALSE; |
| } |
| if (spec->UniqueIdOffset) |
| { |
| const void *id = ((const char *)spec + spec->UniqueIdOffset); |
| if (spec->UniqueIdLength != mount->id_len) return FALSE; |
| if (memcmp( id, mount->id, mount->id_len )) return FALSE; |
| } |
| return TRUE; |
| } |
| |
| /* implementation of IOCTL_MOUNTMGR_QUERY_POINTS */ |
| static NTSTATUS query_mount_points( const void *in_buff, SIZE_T insize, |
| void *out_buff, SIZE_T outsize, IO_STATUS_BLOCK *iosb ) |
| { |
| UINT count, pos, size; |
| const MOUNTMGR_MOUNT_POINT *input = in_buff; |
| MOUNTMGR_MOUNT_POINTS *info = out_buff; |
| struct mount_point *mount; |
| |
| /* sanity checks */ |
| if (input->SymbolicLinkNameOffset + input->SymbolicLinkNameLength > insize || |
| input->UniqueIdOffset + input->UniqueIdLength > insize || |
| input->DeviceNameOffset + input->DeviceNameLength > insize || |
| input->SymbolicLinkNameOffset + input->SymbolicLinkNameLength < input->SymbolicLinkNameOffset || |
| input->UniqueIdOffset + input->UniqueIdLength < input->UniqueIdOffset || |
| input->DeviceNameOffset + input->DeviceNameLength < input->DeviceNameOffset) |
| return STATUS_INVALID_PARAMETER; |
| |
| count = size = 0; |
| LIST_FOR_EACH_ENTRY( mount, &mount_points_list, struct mount_point, entry ) |
| { |
| if (!matching_mount_point( mount, input )) continue; |
| size += mount->name.Length; |
| size += mount->link.Length; |
| size += mount->id_len; |
| size = (size + sizeof(WCHAR) - 1) & ~(sizeof(WCHAR) - 1); |
| count++; |
| } |
| pos = FIELD_OFFSET( MOUNTMGR_MOUNT_POINTS, MountPoints[count] ); |
| size += pos; |
| |
| if (size > outsize) |
| { |
| if (size >= sizeof(info->Size)) info->Size = size; |
| iosb->Information = sizeof(info->Size); |
| return STATUS_MORE_ENTRIES; |
| } |
| |
| info->NumberOfMountPoints = count; |
| count = 0; |
| LIST_FOR_EACH_ENTRY( mount, &mount_points_list, struct mount_point, entry ) |
| { |
| if (!matching_mount_point( mount, input )) continue; |
| |
| info->MountPoints[count].DeviceNameOffset = pos; |
| info->MountPoints[count].DeviceNameLength = mount->name.Length; |
| memcpy( (char *)out_buff + pos, mount->name.Buffer, mount->name.Length ); |
| pos += mount->name.Length; |
| |
| info->MountPoints[count].SymbolicLinkNameOffset = pos; |
| info->MountPoints[count].SymbolicLinkNameLength = mount->link.Length; |
| memcpy( (char *)out_buff + pos, mount->link.Buffer, mount->link.Length ); |
| pos += mount->link.Length; |
| |
| info->MountPoints[count].UniqueIdOffset = pos; |
| info->MountPoints[count].UniqueIdLength = mount->id_len; |
| memcpy( (char *)out_buff + pos, mount->id, mount->id_len ); |
| pos += mount->id_len; |
| pos = (pos + sizeof(WCHAR) - 1) & ~(sizeof(WCHAR) - 1); |
| count++; |
| } |
| info->Size = pos; |
| iosb->Information = pos; |
| return STATUS_SUCCESS; |
| } |
| |
| /* handler for ioctls on the mount manager device */ |
| static NTSTATUS WINAPI mountmgr_ioctl( DEVICE_OBJECT *device, IRP *irp ) |
| { |
| IO_STACK_LOCATION *irpsp = irp->Tail.Overlay.s.u.CurrentStackLocation; |
| |
| TRACE( "ioctl %x insize %u outsize %u\n", |
| irpsp->Parameters.DeviceIoControl.IoControlCode, |
| irpsp->Parameters.DeviceIoControl.InputBufferLength, |
| irpsp->Parameters.DeviceIoControl.OutputBufferLength ); |
| |
| switch(irpsp->Parameters.DeviceIoControl.IoControlCode) |
| { |
| case IOCTL_MOUNTMGR_QUERY_POINTS: |
| if (irpsp->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_MOUNT_POINT)) |
| return STATUS_INVALID_PARAMETER; |
| irp->IoStatus.u.Status = query_mount_points( irpsp->Parameters.DeviceIoControl.Type3InputBuffer, |
| irpsp->Parameters.DeviceIoControl.InputBufferLength, |
| irp->MdlAddress->StartVa, |
| irpsp->Parameters.DeviceIoControl.OutputBufferLength, |
| &irp->IoStatus ); |
| break; |
| default: |
| FIXME( "ioctl %x not supported\n", irpsp->Parameters.DeviceIoControl.IoControlCode ); |
| irp->IoStatus.u.Status = STATUS_NOT_SUPPORTED; |
| break; |
| } |
| return irp->IoStatus.u.Status; |
| } |
| |
| /* handler for ioctls on the harddisk device */ |
| 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; |
| |
| TRACE( "ioctl %x insize %u outsize %u\n", |
| irpsp->Parameters.DeviceIoControl.IoControlCode, |
| irpsp->Parameters.DeviceIoControl.InputBufferLength, |
| irpsp->Parameters.DeviceIoControl.OutputBufferLength ); |
| |
| switch(irpsp->Parameters.DeviceIoControl.IoControlCode) |
| { |
| case IOCTL_DISK_GET_DRIVE_GEOMETRY: |
| { |
| DISK_GEOMETRY info; |
| 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.TracksPerCylinder = 255; |
| info.SectorsPerTrack = 63; |
| info.BytesPerSector = 512; |
| memcpy( irp->MdlAddress->StartVa, &info, len ); |
| irp->IoStatus.Information = len; |
| irp->IoStatus.u.Status = STATUS_SUCCESS; |
| break; |
| } |
| case IOCTL_STORAGE_GET_DEVICE_NUMBER: |
| { |
| DWORD len = min( sizeof(disk_info->devnum), irpsp->Parameters.DeviceIoControl.OutputBufferLength ); |
| |
| memcpy( irp->MdlAddress->StartVa, &disk_info->devnum, len ); |
| irp->IoStatus.Information = len; |
| irp->IoStatus.u.Status = STATUS_SUCCESS; |
| break; |
| } |
| case IOCTL_CDROM_READ_TOC: |
| irp->IoStatus.u.Status = STATUS_INVALID_DEVICE_REQUEST; |
| break; |
| default: |
| FIXME( "unsupported ioctl %x\n", irpsp->Parameters.DeviceIoControl.IoControlCode ); |
| irp->IoStatus.u.Status = STATUS_NOT_SUPPORTED; |
| break; |
| } |
| return irp->IoStatus.u.Status; |
| } |
| |
| /* create mount points for mapped drives */ |
| static void create_drive_mount_points( DRIVER_OBJECT *driver ) |
| { |
| const char *config_dir = wine_get_config_dir(); |
| char *buffer, *p, *link; |
| unsigned int i; |
| DEVICE_OBJECT *device; |
| UNICODE_STRING device_name; |
| |
| if ((buffer = RtlAllocateHeap( GetProcessHeap(), 0, |
| strlen(config_dir) + sizeof("/dosdevices/a:") ))) |
| { |
| strcpy( buffer, config_dir ); |
| strcat( buffer, "/dosdevices/a:" ); |
| p = buffer + strlen(buffer) - 2; |
| |
| for (i = 0; i < MAX_DOS_DRIVES; i++) |
| { |
| *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 ); |
| } |
| RtlFreeHeap( GetProcessHeap(), 0, buffer ); |
| } |
| } |
| |
| /* driver entry point for the harddisk driver */ |
| static NTSTATUS WINAPI harddisk_driver_entry( DRIVER_OBJECT *driver, UNICODE_STRING *path ) |
| { |
| 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}; |
| static const WCHAR harddisk0W[] = {'\\','D','e','v','i','c','e', |
| '\\','H','a','r','d','d','i','s','k','0',0}; |
| static const WCHAR physdrive0W[] = {'\\','?','?','\\','P','h','y','s','i','c','a','l','D','r','i','v','e','0',0}; |
| |
| UNICODE_STRING nameW, linkW; |
| DEVICE_OBJECT *device; |
| NTSTATUS status; |
| struct disk_device_info *info; |
| |
| driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = harddisk_ioctl; |
| |
| RegCreateKeyExW( HKEY_LOCAL_MACHINE, mounted_devicesW, 0, NULL, |
| REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &mount_key, NULL ); |
| |
| RtlInitUnicodeString( &nameW, harddisk0W ); |
| RtlInitUnicodeString( &linkW, physdrive0W ); |
| if (!(status = IoCreateDevice( driver, sizeof(*info), &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; |
| |
| create_drive_mount_points( driver ); |
| |
| return status; |
| } |
| |
| /* main entry point for the mount point manager driver */ |
| NTSTATUS WINAPI DriverEntry( DRIVER_OBJECT *driver, UNICODE_STRING *path ) |
| { |
| 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}; |
| static const WCHAR link_mountmgrW[] = {'\\','?','?','\\','M','o','u','n','t','P','o','i','n','t','M','a','n','a','g','e','r',0}; |
| static const WCHAR harddiskW[] = {'\\','D','r','i','v','e','r','\\','H','a','r','d','d','i','s','k',0}; |
| |
| UNICODE_STRING nameW, linkW; |
| DEVICE_OBJECT *device; |
| NTSTATUS status; |
| |
| TRACE( "%s\n", debugstr_w(path->Buffer) ); |
| |
| driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = mountmgr_ioctl; |
| |
| RtlInitUnicodeString( &nameW, device_mountmgrW ); |
| RtlInitUnicodeString( &linkW, link_mountmgrW ); |
| if (!(status = IoCreateDevice( driver, 0, &nameW, 0, 0, FALSE, &device ))) |
| status = IoCreateSymbolicLink( &linkW, &nameW ); |
| if (status) |
| { |
| FIXME( "failed to create device error %x\n", status ); |
| return status; |
| } |
| |
| initialize_hal(); |
| initialize_diskarbitration(); |
| |
| RtlInitUnicodeString( &nameW, harddiskW ); |
| status = IoCreateDriver( &nameW, harddisk_driver_entry ); |
| |
| return status; |
| } |
