Dmitry Konnov wrote:
MS> well I would phrase that differently: the backend that collects and MS> restores the data from the filesystem needs to be a native application.
but Change Journal is ntdll.dll DeviceIoControl with certain options call.
No. It is a functionality of the NTFS filesystem. If you call change journal on a FAT volume or on a CDROM the call will fail. MacOSX uses the HFS+ filesystem. So if you want something like change journal you'll have to implement it in the MacOSX filesystem aka kernel. Even if you/Apple get that done it is still a stupid idea to use a Windows backup program in Wine to backup the host system; there are other features of the host system that to not map to the Windows world and thus would get lost during the backup/restore process.
Does Wine implement ntdll.dll?
You could have checked that yourself by downloading the Wine source... http://source.winehq.org/source/dlls/ntdll/
bye michael