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[PATCH v2 0/5] Introduce 64bit accessors and structures required to address y2038 issues in the posix_clock subsystem

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  [PATCH v2 0/5] Introduce 64bit accessors and structures required to address y2038 issues in the posix_clock subsystem Baolin Wang <baolin.wang@linaro.org> - 2015-07-30 03:50 +0200
    Re: [PATCH v2 3/5] security: Introduce security_settime64() James Morris <jmorris@namei.org> - 2015-07-30 10:30 +0200

#1195672 — [PATCH v2 0/5] Introduce 64bit accessors and structures required to address y2038 issues in the posix_clock subsystem

This patch series change the 32-bit time types (timespec/itimerspec) to
the 64-bit types (timespec64/itimerspec64), and add new 64bit accessor
functions, which are required in order to avoid y2038 issues in the
posix_clock subsystem.

In order to avoid spamming people too much, I'm only sending the first
few patches of the patch series, and left the other patches for later.

And if you are interested in the whole patch series, see:
https://git.linaro.org/people/baolin.wang/upstream_0627.git

Thoughts and feedback would be appreciated.

Changes since v1:
 - Modify the changelog.
 - Delete one patch without y2038 safe.


Baolin Wang (5):
  time: Introduce struct itimerspec64
  timekeeping: Introduce current_kernel_time64()
  security: Introduce security_settime64()
  time: Introduce do_sys_settimeofday64()
  time: Introduce timespec64_to_jiffies()/jiffies_to_timespec64()

 include/linux/jiffies.h     |   22 +++++++++++++++++++---
 include/linux/lsm_hooks.h   |    5 +++--
 include/linux/security.h    |   20 +++++++++++++++++---
 include/linux/time64.h      |   35 +++++++++++++++++++++++++++++++++++
 include/linux/timekeeping.h |   24 +++++++++++++++++++++---
 kernel/time/time.c          |   28 +++++++++++++++++-----------
 kernel/time/timekeeping.c   |    6 +++---
 security/commoncap.c        |    2 +-
 security/security.c         |    2 +-
 9 files changed, 117 insertions(+), 27 deletions(-)

-- 
1.7.9.5

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#1195813 — Re: [PATCH v2 3/5] security: Introduce security_settime64()

On Wed, 29 Jul 2015, Baolin Wang wrote:

> security_settime() uses a timespec, which is not year 2038 safe
> on 32bit systems. Thus this patch introduces the security_settime64()
> function with timespec64 type. We also convert the cap_settime() helper
> function to use the 64bit types.
> 
> Move the security_settime() to the head file as a inline function for
> removing that inline helper when following up patches are fixed the
> call sites.
> 
> None of the existing hooks is using the timespec argument and therefor
> the patch is not doing any functional changes.
> 
> Signed-off-by: Baolin Wang <baolin.wang@linaro.org>

Reviewed-by: James Morris <james.l.morris@oracle.com>


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