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    Subject[GIT PULL] remove ksys_mount() and ksys_dup()
    Date
    The following changes since commit ae4b064e2a616b545acf02b8f50cc513b32c7522:

    Merge tag 'afs-fixes-20191211' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs (2019-12-11 18:10:40 -0800)

    are available in the Git repository at:

    git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux.git remove-ksys-mount-dup

    for you to fetch changes up to 8243186f0cc7c57cf9d6a110cd7315c44e3e0be8:

    fs: remove ksys_dup() (2019-12-12 19:00:36 +0100)

    This small series replaces all in-kernel calls to the
    userspace-focused ksys_mount() and ksys_dup() with calls
    to kernel-centric functions:

    For each replacement of ksys_mount() with do_mount(),
    one needs to verify that the first and third parameter
    (char *dev_name, char *type) are strings allocated in
    kernelspace and that the fifth parameter (void *data)
    is either NULL or refers to a full page (only occurence
    in init/do_mounts.c::do_mount_root()). The second and
    fourth parameters (char *dir_name, unsigned long flags)
    are passed by ksys_mount() to do_mount() unchanged, and
    therefore do not require particular care.

    Moreover, instead of pretending to be userspace, the opening
    of /dev/console as stdin/stdout/stderr can be implemented
    using in-kernel functions as well. Thereby, ksys_dup() can
    be removed for good.

    ---

    Changes since the split-series patches[1,2]:
    - merge both series (on suggestion by Linus)
    - remove pointless cast (on suggestion by Linus)

    [1] https://lore.kernel.org/lkml/20191212135724.331342-1-linux@dominikbrodowski.net/
    [2] https://lore.kernel.org/lkml/20191212140752.347520-1-linux@dominikbrodowski.net/


    Thanks,
    Dominik


    ----------------------------------------------------------------
    Dominik Brodowski (5):
    devtmpfs: use do_mount() instead of ksys_mount()
    initrd: use do_mount() instead of ksys_mount()
    init: use do_mount() instead of ksys_mount()
    init: unify opening /dev/console as stdin/stdout/stderr
    fs: remove ksys_dup()

    drivers/base/devtmpfs.c | 6 +++---
    fs/file.c | 7 +------
    fs/namespace.c | 10 ++--------
    include/linux/device.h | 4 ++--
    include/linux/initrd.h | 2 ++
    include/linux/syscalls.h | 3 ---
    init/do_mounts.c | 30 +++++++++++++++++++++++-------
    init/do_mounts_initrd.c | 11 ++++-------
    init/main.c | 31 ++++++++++++++++++++++++++-----
    9 files changed, 63 insertions(+), 41 deletions(-)

    --
    2.24.1

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