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    SubjectRe: No PTRACE_READDATA for archs other than SPARC?
    On Sun, May 19, 2002 at 09:40:53PM -0700, David S. Miller wrote:
    > From: Pradeep Padala <ppadala@cise.ufl.edu>
    > Date: Sun, 19 May 2002 23:08:36 -0400 (EDT)
    >
    > I was trying to understand ptrace code in kernel. It seems there's
    > no PTRACE_READDATA for architectures other than sparc and sparc64.
    > There's a function named ptrace_readdata() in kernel/ptrace.c but I
    > couldn't find a way to invoke it from user space. Is the feature
    > missing? or Is it intended?
    >
    > Only Sparc implements this, that is correct.
    >
    > If other platforms added PTRACE_READDATA support, they would
    > also need to add some way to do a feature test for it's presence
    > so that GDB and other debugging code could actually make use
    > of it portably.

    Not really, we should just get EINVAL (ENOSYS?) back when we try to use
    it, right?

    --
    Daniel Jacobowitz Carnegie Mellon University
    MontaVista Software Debian GNU/Linux Developer
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