On Thu, Dec 02, 2004 at 04:59:49PM -0500, Colin Walters wrote:
On Thu, 2004-12-02 at 16:38 -0500, Daniel Veillard wrote:
> If the kernel has an atomic rename system call then it can be done
> without race, if not that will be a very serious issue.
It has an atomic rename for files; but you can't atomically change a
directory that has content. Or am I missing something? Not to mention
this would break things like RPM verification.
I think you're missing something. It is possible to copy the file
somewhere else and then rename it to the original name, then update
the m_time and rpm -Va should not say anything, the checksum and file
system attributes should look alike.
The copy to a single new directory is a trick to force allocation
in the same filesystem zone (if the FS has zones).
Daniel
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