Re: refuse to update certain files upon extraction

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* Message by -Joerg Schilling- from Tue 2008-03-18:

> The problem is a Linux kernel bug.
>=20
> Any other backup tool (like e.g. dump/restore) will run into the same pro=
blem
> as Linux did not update the timestamp from the directory=20
> "send-backup-test/log/supervise/".
>=20
> You need to send a bug-report against Linux and get a fix for this proble=
m....

I've already prepared a minimal example to prove this, see the attached=20
files. The ctime of `sub' changes the first time that `rename' is run, but=
=20
not the second. I also tried this on Solaris, and there the ctime is=20
updated after the second run of `rename'.

Lasse


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#!/bin/sh

rm -fr sub new &&
mkdir sub &&
stat sub &&
sleep 2 &&
echo running rename &&
./rename a &&
stat sub &&
sleep 2 &&
echo running rename again &&
./rename b &&
stat sub

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#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>

int main(int argc, char** argv) {
	int fd;

	fd =3D open("new", O_WRONLY | O_NDELAY | O_TRUNC | O_CREAT, 0644);=09
	write(fd, argv[1], 1);
	close(fd);
	rename("new", "sub/x");

	return 0;
}

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