Re: execute a user process in the kernel

From: Chris Pressey (cpressey_at_catseye.mine.nu)
Date: 09/23/04

  • Next message: Bruce M Simpson: "Re: Global (non _KERNEL) place for sockaddr_union?" 
    Date: Wed, 22 Sep 2004 23:17:24 -0700
To: freebsd-hackers@freebsd.org

    On Wed, 22 Sep 2004 18:46:49 -0400
    Allan Fields <bsd@afields.ca> wrote:

    > On Wed, Sep 22, 2004 at 08:49:11AM +0000, Gordon David wrote:
    > > Hello,
    > >
    > > I have a question. Anyone would like to tell me how to execute a
    > > user process or shell script in the kernel?
    >
    > You probably really don't want to do this and if you do, there is
    > likely a better approach.

    Reading between the lines and guessing - here's what you can do:

    Write a userland program that (1) reads /dev/fooctl, (2) does something
    based on what it got from /dev/fooctl, and (3) goes back to step (1).

    Then write a kernel driver that produces output on /dev/fooctl every
    time it wants the userland program to do something.

    This achieves the effect you (probably) want while maintaining the
    seperation between kernel and userland.

    HTH,
    -Chris
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  • Next message: Bruce M Simpson: "Re: Global (non _KERNEL) place for sockaddr_union?"

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