[PATCH] mountmgr: Add SCSI addresses of udisks2 devices to the registry.

[Jeff Smith]

On Sat, Nov 7, 2020 at 11:15 AM Esme Povirk <esme at codeweavers.com> wrote:
>
> Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49788
> Signed-off-by: Esme Povirk <esme at codeweavers.com>
> ---
>  dlls/mountmgr.sys/dbus.c | 54 +++++++++++++++++++++++++++++++++++++---
>  1 file changed, 50 insertions(+), 4 deletions(-)
>
> diff --git a/dlls/mountmgr.sys/dbus.c b/dlls/mountmgr.sys/dbus.c
> index 98b2a47ba6d..ebe0152bf1c 100644
> --- a/dlls/mountmgr.sys/dbus.c
> +++ b/dlls/mountmgr.sys/dbus.c
> @@ -385,7 +385,8 @@ static const char *udisks2_string_from_array( DBusMessageIter *iter )
>
>  /* find the drive entry in the dictionary and get its parameters */
>  static void udisks2_get_drive_info( const char *drive_name, DBusMessageIter *dict,
> -                                    enum device_type *drive_type, int *removable, const char **serial )
> +                                    enum device_type *drive_type, int *removable, const char **serial,
> +                                    int *optical, const char **model )
>  {
>      DBusMessageIter iter, drive, variant;
>      const char *name;
> @@ -405,11 +406,49 @@ static void udisks2_get_drive_info( const char *drive_name, DBusMessageIter *dic
>                      *drive_type = udisks_parse_media_compatibility( &variant );
>                  else if (!strcmp( name, "Id" ))
>                      p_dbus_message_iter_get_basic( &variant, serial );
> +                else if (!strcmp( name, "Optical" ))
> +                    p_dbus_message_iter_get_basic( &variant, optical );

You may be aware of this, but I found that the 'Optical' entry is for
indicating the _presence_ of optical media,
not _support_ for it.  In other words, "is the optical drive full or
empty".  As written, we get different registry
values by inserting/ejecting a disc (e.g. DiskPeripheral vs
CdRomPeripheral).  This would not match the
behavior in Windows.

AFAICT, the best way to determine if this is an optical disc drive is
checking the 'MediaCompatibility' entry,
which is itself an array of strings, one of which should be 'optical_cd'.

> +                else if (!strcmp( name, "Model" ))
> +                    p_dbus_message_iter_get_basic( &variant, model );
>              }
>          }
>      }
>  }
>
> +static void udisks2_add_scsi_device( const char *unix_device, int optical,
> +    const char *model, UNICODE_STRING *devname )
> +{
> +    WCHAR *name;
> +    HANDLE handle;
> +    SCSI_ADDRESS scsi_addr;
> +    DWORD size;
> +
> +    if (!unix_device)
> +        return;
> +
> +    if (!(name = wine_get_dos_file_name( unix_device )))
> +    {
> +        ERR("Failed to convert %s to NT, err %u\n", debugstr_a(unix_device), GetLastError());
> +        return;
> +    }
> +    handle = CreateFileW( name, GENERIC_READ | SYNCHRONIZE, FILE_SHARE_READ | FILE_SHARE_WRITE,
> +                          NULL, OPEN_EXISTING, 0, 0 );
> +    RtlFreeHeap( GetProcessHeap(), 0, name );
> +    if (handle == INVALID_HANDLE_VALUE)
> +    {
> +        WARN("Failed to open %s, err %u\n", debugstr_a(unix_device), GetLastError());
> +        return;
> +    }
> +
> +    if (DeviceIoControl( handle, IOCTL_SCSI_GET_ADDRESS, NULL, 0, &scsi_addr, sizeof(scsi_addr), &size, 0 ))
> +    {
> +        create_scsi_entry( &scsi_addr, 255, optical ? "atapi" : "WINE SCSI",
> +            optical ? SCSI_CDROM_PERIPHERAL : SCSI_DISK_PERIPHERAL, model, devname );
> +    }
> +
> +    CloseHandle( handle );
> +}
> +
>  static void udisks2_add_device( const char *udi, DBusMessageIter *dict, DBusMessageIter *block )
>  {
>      DBusMessageIter iter, variant, paths, string;
> @@ -418,9 +457,10 @@ static void udisks2_add_device( const char *udi, DBusMessageIter *dict, DBusMess
>      const char *type = NULL;
>      const char *drive = NULL;
>      const char *id = NULL;
> +    const char *model = NULL;
>      GUID guid, *guid_ptr = NULL;
>      const char *iface, *name;
> -    int removable = FALSE;
> +    int removable = FALSE, optical = FALSE;
>      enum device_type drive_type = DEVICE_UNKNOWN;
>
>      while ((iface = udisks_next_dict_entry( block, &iter )))
> @@ -451,7 +491,7 @@ static void udisks2_add_device( const char *udi, DBusMessageIter *dict, DBusMess
>                  else if (!strcmp( name, "Drive" ))
>                  {
>                      p_dbus_message_iter_get_basic( &variant, &drive );
> -                    udisks2_get_drive_info( drive, dict, &drive_type, &removable, &id );
> +                    udisks2_get_drive_info( drive, dict, &drive_type, &removable, &id, &optical, &model );
>                  }
>                  else if (!strcmp( name, "IdUUID" ))
>                  {
> @@ -485,7 +525,13 @@ static void udisks2_add_device( const char *udi, DBusMessageIter *dict, DBusMess
>      }
>      if (device)
>      {
> -        if (removable) add_dos_device( -1, udi, device, mount_point, drive_type, guid_ptr, NULL );
> +        if (removable)
> +        {
> +            UNICODE_STRING devname;
> +            devname.Buffer = NULL;
> +            add_dos_device( -1, udi, device, mount_point, drive_type, guid_ptr, &devname );
> +            udisks2_add_scsi_device( device, optical, model, &devname );
> +        }

I guess optical drives are what we are particularly interested in, but
FWIW it seems Windows also
contains Scsi entries for the hard drives.

>          else if (guid_ptr) add_volume( udi, device, mount_point, DEVICE_HARDDISK_VOL, guid_ptr, id );
>      }
>  }
> --
> 2.17.1
>
>