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    SubjectRe: Kill system call

    Actually, the Linux implementation allows you to test both
    whether a process exists _and_ whether you have permission to send a
    signal to it. Please don't change it. I _like_ being able to do both.

    JK

    On Fri, 22 Mar 1996, Linus Torvalds wrote:

    > No, only badly written tests break on linux. POSIX expressly states that
    > ESEARCH means that the process doesn't exist, so THAT is what you should check
    > against. POSIX also very expressly sais that EPERM means you don't have the
    > permissions to send a signal to the process, so if you get EPERM you know that
    > yes, the process exists, but I don't have the rights to signal it.
    >
    > Is it broken? It would be reasonably easy to fix, but do we really want to?
    >
    > Linus
    >


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