Re: execute a user process in the kernel

From: Dag-Erling Smørgrav (des_at_des.no)
Date: 09/24/04

  • Next message: Christian S.J. Peron: "fixes for ipfw and pf lock ordering issues" 
    To: Robert Watson <rwatson@freebsd.org>
Date: Fri, 24 Sep 2004 21:20:21 +0200

    Robert Watson <rwatson@freebsd.org> writes:
    > Well, we have kproc/kthread APIs, but none of that is semantically
    > compatible with the notion of execve(), which is a very user-centric
    > concept ("replace the address space with a mapping of binary <x>"). You
    > could fudge together a related notion, though, involving loadable kernel
    > modules that have a main() routine run from a thread. That said, the
    > notion of simply running user code in kernel (as has been pointed out) is
    > fraught with peril, primarily because the kernel is basically one big
    > program with many special requirements, and user applications are written
    > with the assumption that they are the only program, not running in the
    > context of another program.

    I believe the OP actually wanted the kernel to spawn a userland
    process, but I may have misunderstood.

    DES 

    -- 
Dag-Erling Smørgrav - des@des.no
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