[Rdiff-backup-bugs] [sr #106584] junctions need to be properly processed for useful backups

[Andrew Ferguson]

Follow-up Comment #2, sr #106584 (project rdiff-backup):

Ok, rdiff-backup will now skip over reparse points and do nothing with them.

In the future, we could consider trying to backup reparse points properly.
This would involve code like this:

hfile = win32file.CreateFile("c:UsersDefault User", win32con.GENERIC_READ,
win32con.FILE_SHARE_READ, None, win32con.OPEN_EXISTING,
win32con.FILE_FLAG_BACKUP_SEMANTICS|win32con.FILE_FLAG_OPEN_REPARSE_POINT,
None)
buf = win32file.DeviceIoControl(hfile, winioctlcon.FSCTL_GET_REPARSE_POINT,
'', winnt.MAXIMUM_REPARSE_DATA_BUFFER_SIZE, None)

and then parsing the appropriate string out of the buffer. The buffer
(REPARSE_DATA_BUFFER) is defined here:
http://msdn.microsoft.com/en-us/library/ms791514.aspx

See also:
http://msdn.microsoft.com/en-us/library/aa365507(VS.85).aspx
http://msdn.microsoft.com/en-us/library/aa363858(VS.85).aspx
http://msdn.microsoft.com/en-us/library/aa365503(VS.85).aspx
http://msdn.microsoft.com/en-us/library/aa363940(VS.85).aspx

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