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    SubjectRe: [PATCH v6 09/11] fs/pipe.c: export create_pipe_files() and replace_fd()
    On Wed, Nov 29, 2017 at 03:13:57PM -0800, Christoph Hellwig wrote:
    > On Tue, Nov 28, 2017 at 11:57:53PM +0200, Jarkko Sakkinen wrote:
    > > > Yes. You still shall not play nasty games with file descriptors.
    > >
    > > I need to put something to file descriptors in order to have a IO
    > > channels for the launch enclave hosting process.
    >
    > Just do it like any other program - open it from your userspace
    > program using open() and related syscalls.

    In this case it would not work as the launch enclave is still part of
    the kernel and it would create a dependency how the user space defines
    paths. If using pipe specifically is an issue, I could easily use shmem
    file as a mean for communiation.

    The way I implemented is much like how I did arch/x86/realmode with HPA
    and it has kind of comparable requirements, part of the kernel but not
    exactly code living in the kernel namespace.

    /Jarkko

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