[PATCH 0/3] fix y2038 problem in input_event

[WEN Pingbo <pingbo.wen@linaro.org>]

Before this, I have discussed this problem with Arnd. And Arnd have
an idea that by converting timeval to long / long in input_event, so that
input_event structure size will be unchanged, and timeval structure will
removed entirely. But we also need to avoid using CLOCK_REALTIME in
userland, to keep the new input_event structure y2038 safe.

The input_event will only support monotonic time in Arnd's idea. And
we still need to add wall time support for old 32-bit binary. 

Those patches try to keep original input capacity, and resolve y2038
problem in input_event radically.

struct input_event is only used between kernel and userspace
communication (except uinput). So that we can replace input_event
with input_event64 in kernel entirely, and add a conversion in
input_event_from/to_user() to keep compatible with old 32-bits binary.

userland can switch to input_event64, which is y2038 safe, via ioctl.

WEN Pingbo (3):
  evdev: convert input_event to input_event64
  evdev: add new ioctl EVIOCSEVENT / EVIOCGEVENT
  uinput: convert input_event to input_event64

 drivers/input/evdev.c        | 38 ++++++++++++-------
 drivers/input/input-compat.c | 88 +++++++++++++++++++++++++++++++++++++-------
 drivers/input/input-compat.h |  9 +++--
 drivers/input/misc/uinput.c  | 17 ++++++---
 include/linux/uinput.h       |  2 +-
 include/uapi/linux/input.h   | 18 +++++++++
 6 files changed, 134 insertions(+), 38 deletions(-)

-- 
1.9.1