On 18/03/2011 9:34 PM, Tim Golden wrote:
On 18/03/2011 9:28 PM, Randy Syring wrote:
The issue I am running into is that I am not sure how to copy files from
windows to the Linux and preserve ACLs.
I assume that you only want to preserve them as metadata, not
to map them somehow to whatever security model obtains on the
Linux disk?
The only kind of thing I can come up with (hand-wavingly) is to
convert the SD of each file to its equivalent SDDL and then to
track that along with the file. I was going to suggest stuffing
it in an ADS but presumably that wouldn't survive the journey
to Linux either. No doubt you could contrive some kind of
parallel metadata/database which could hold the info...
... or even (slightly wild-eyed thought) including the SDDL as
a segment in the backed-up filename, suitably escaped. Semi-tested
proof of concept:
<code>
import os, sys
import win32security
import win32file
if not os.path.exists ("c:/temp/sddl"):
os.mkdir ("c:/temp/sddl")
for dirpath, dirnames, filenames in os.walk ("c:/temp"):
for filename in filenames:
print filename
sd = win32security.GetFileSecurity (
os.path.join (dirpath, filename),
win32security.DACL_SECURITY_INFORMATION
)
sddl = win32security.ConvertSecurityDescriptorToStringSecurityDescriptor (
sd,
win32security.SDDL_REVISION_1,
win32security.DACL_SECURITY_INFORMATION
)
print sddl
base, ext = os.path.splitext (filename)
win32file.CopyFile (
os.path.join (dirpath, filename),
os.path.join ("c:/temp/sddl", base + "." + sddl.replace (":", "#") + ext),
1
)
break
</code>
TJG
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