re[7]: [rdiff-backup-users] Still thinking about windows

[Greg Freemyer]

>>  Maybe this would take too much work, but I just realized another
>>  possibility is for rdiff-backup to do various tests on the destination
>>  and/or source directory (e.g. seeing if it supports acls, eas, case
>>  sensitive filenames, colons in the filenames, etc.).  This would only
>>  need to be done the first time since the information could be recorded
>>  in a file in the rdiff-backup-data and just read from that for later
>>  backups.

Ben,

I asked on the SuSE programmers list for some help, and I wrote the below 
set_windows_mode() myself.

I ended up with the below pseudo python code.  It does not run, but maybe you 
could turn it into something useful.

The switch statement in particular is AC like.  I assume python has an 
equivalent.

Obviously it can be expanded.

--------   Cut Here  ---------

import os, stat
def set_windows_mode(force_windows, force_unix, target_dir):
  """
  force_windows and force_unix correspond to command-line args
  target_dir is where the backup is being saved.
  """
   if (force_windows):
       windows_mode = true
   else if (force_unix):
       windows_mode = false
   else if sys.platform == Linux2:
       fstype = getFSType(target_dir)
       switch(fstype)  :
               case ntfs
               case fat
                       windows_mode=true
               case xfs
               case reiserfs
               case ext2
               case ext3
               default
                       windows_mode=true
       return

def getFSType(filename):
  """
  Returns the fstype of the volume containg 'filename', which should be the
  full path to the file
  """
  # Build dict of filesystems and use the device number as the key
  devices = {}
  f = open('/proc/mounts')
  for line in f.readlines():
      info = line.split()
      devnum = os.stat(info[1])[stat.ST_DEV]
      devices[devnum] = info[2]
  f.close()
  # Find out which one contains 'filename' and return the fstype
  return devices[os.stat(filename)[stat.ST_DEV]]

--------   Cut Here  ---------


Greg
-- 
Greg Freemyer