Re: O_NOLINK for open()

[Bodo Eggert]

Brent Casavant <bcasavan@xxxxxxx> wrote:

[...]
> Hmm.  This will work as long as the peer process is running setuid
> to it's own unique user.  Excellent idea!  Since I need to make the
> program setuid to avoid non-priveleged ptrace attacks, this is a
> terrific solution.

Tried that:

~ > cd tmp
~/tmp > cp /bin/sleep .
~/tmp > chmod u+s sleep
~/tmp > ./sleep 2147483647 &
[1] 2823
~/tmp > strace -p 2823
Process 2823 attached - interrupt to quit
setup(

-- 
Top 100 things you don't want the sysadmin to say:
27. You can do this patch with the system up...

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