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Re: $< and setuid: quite different animals?

by almut (Canon)
on Apr 10, 2010 at 06:52 UTC ( #833957=note: print w/ replies, xml ) Need Help??

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  1. or download this
    $> = $uid;
    $< = $uid;
    ...
    
  2. or download this
    $ sudo strace ./switchback.pl 2>&1 | grep '^setr'
    setresuid(-1, 65534, -1)                = 0
    setreuid(65534, 4294967295)             = 0
    setresuid(-1, 0, -1)                    = -1 EPERM (Operation not perm
    +itted)
    setreuid(0, 4294967295)                 = -1 EPERM (Operation not perm
    +itted)
    

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