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Re: Race-condition ? (was: "Preserve owner and group" on MSDOS/Windows)


From: Richard M. Stallman
Subject: Re: Race-condition ? (was: "Preserve owner and group" on MSDOS/Windows)
Date: Sun, 26 Jun 2005 00:46:13 -0400

    I think lisp calls to set-file-modes should also be checked carefully.

Would you like to check some of them?  The crucial question is, does a
call to set-file-modes introduce a worse problem than what existed
anyway.  For instance, if someone could put a hardlink where you will
chmod it, could he also put a hardlink where you will write the
contents of the file?  In cases where the latter problem exists,
adding the former problem to it does not really make things any worse.




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