Problems with file permissions and cp when running on Vista

[Tom Quarendon]

Larry Hall (Cygwin) wrote:
> I'd start at the source.  Give yourself POSIX-style access to the files
> to start with.  'cp' will preserve that access.  'cp' and many other
> utilities don't take ACL permissions into account.  They are silently
> ignored.  For whatever reason, it looks like your source file has no
> POSIX permissions for user, group, and other.  Fix that with 'chmod'
> and I think you'll have solved your problem.
>
I suppose that my issue is that I can look at the source file, use vi on 
it, cat it etc despite the fact that it doesn't appear to have any 
permissions. Copy the file and I now don't have permissions on the file 
at all. In other words when I do CAT, it's clearly checking more than 
just the posix permissions otherwise I wouldn't be able to look at the 
contents. But the CP isn't then copying that information. If CAT failed 
to open the source file with permission denied because of the lack of 
POSIX permissions, then the target having no permissions seems 
reasonable as you then get the same behaviour on the target. But since I 
can read the source, it is checking more than just the POSIX 
permissions, it seems wrong to me that CP isn't taking notice of that too.


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