Re: Why Ext2/3 needs immutable attribute?

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On Apr 23, 2005, at 12:50, dean gaudet wrote:
On Sun, 17 Apr 2005, Xin Zhao wrote:

Why not simply unset the write bit for all three groups of users?
That seems to be enough to prevent file modification.

another usage: if you "chattr +i /var" while /var is unmounted, then root
is unlikely to accidentally create files/dirs in /var -- and when you
mount the real /var on top it works fine. i tend to protect all my mount points this way (especially those in /mnt) to avoid my own dumb mistakes.

If you chmod 000 /var beforehand (While it's still unmounted, of course),
then it's also blindingly obvious that it's not mounted in an ls -l :-D.
I too have used this trick on many/most of my systems.

Cheers,
Kyle Moffett

-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
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L++++(+++) E W++(+) N+++(++) o? K? w--- O? M++ V? PS+() PE+(-) Y+
PGP+++ t+(+++) 5 X R? tv-(--) b++++(++) DI+ D+ G e->++++$ h!*()>++$ r !y?(-)
------END GEEK CODE BLOCK------


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