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    SubjectRe: capabilities in elf headers, (my) final (and shortest) iteration
    Hi Horst.

    >>>>> ...and works only for some types of files (how about a
    >>>>> webserver written in Perl?).

    >> {Shrug} Perhaps somebody can suggest some way that capabilities
    >> can have meaning for a script, any script if it comes to that?

    > A script in Unix is just another random way to write a program
    > that does what I want. Nothing special there. Note that today's
    > scripts are (almost) undistinguishable from binary, compiled
    > programs: They may carry the same permissions (execute
    > permissions for whom, even S[UG]ID bits (not on all Unices, but
    > several honor them)).

    Ask BugTrax about that - of the unices I've met, those that honour
    S[UG]ID bits on scripts are the ones that have the most security
    holes, and I believe the two facts are connected.

    > If some scheme can't do the same (at least in principle) for
    > capabilities, it is fundamentally flawed.

    Turn that round: If it CAN do the same, then it's a serious security
    risk that should be closed up.

    > No "all capable" interpreter should be needed, as this is a
    > _huge_ security risk, the kernel might as well endow this
    > particular process with the requested capabilities, and nothing
    > else.

    No "all capable" interpreter should exist for the simple reason that
    having either it or a script with EXTRA capabilities is a serious
    security risk that needs to be closed up.

    Best wishes from Riley.

    | There is something frustrating about the quality and speed of Linux |
    | development, ie., the quality is too high and the speed is too high, |
    | in other words, I can implement this XXXX feature, but I bet someone |
    | else has already done so and is just about to release their patch. |

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