Messages in this thread | | | Date | Tue, 13 May 2003 05:25:15 +0300 (IDT) | From | Yoav Weiss <> | Subject | Re: The disappearing sys_call_table export. |
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> And when I type 'swapoff' at the command line the whole scheme fails > unless I am a perfect robot sysadmin and always remember to wipe the > file. This needs to 'fail safe' and it needs to be done within the kernel > to be considered a working feature. >
mv /sbin/swapoff /sbin/swapoff.real cat >/sbin/swapoff #!/bin/sh /sbin/swapoff.real /sbin/wipeswap ^D chmod +x /sbin/swapoff
Any system that doesn't consider this fail-safe enough, shouldn't rely on this zeroing operation even if performed by the kernel. See the URL I posted in this thread about encrypted swap.
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