[PATCH 00/11] y2038: add time64 syscalls

Arnd Bergmann
2019-01-10T17:29:00Z

This series finally gets us to the point of having system calls with
64-bit time_t on all architectures, after a long time of incremental
preparation patches.

There was actually one conversion that I missed during the summer,
i.e. Deepa's timex series, which I now updated based the 5.0-rc1 changes
and review comments.

I hope that the actual conversion should be uncontroversial by now,
even if some of the patches are rather large.

The one area that may need a little discussion is for the system call
numbers assigned in the final patch: Can we get consensus on whether
the idea of using the same numbers on all architectures, as well as my
choice of numbers makes sense here?

So far, I have done a lot of build testing across most architectures,
which has found a number of bugs. I have also done an LTP run on arm32
with existing user space, but not on the other architectures. I did LTP
tests with a modified musl libc[2] last summer on an older version of
this series to make sure that the new 64-bit time_t interfaces work.
The version there will need updates for testing with this new kernel
patch series; I plan to do that next.

For testing, the series plus the preparatory patches is available at
[3]. Once there is a general agreement on this series and I have done
more tests for the new system calls, I plan to add this to linux-next
through my asm-generic tree or Thomas' timers tree.

Please review and test!

Arnd

[1] https://lore.kernel.org/lkml/20190110162435.309262-1-arnd@arndb.de/T/
[2] https://git.linaro.org/people/arnd/musl-y2038.git/
[3] https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git y2038-5.0-rc1

Arnd Bergmann (8):
time: make adjtime compat handling available for 32 bit
time: fix sys_timer_settime prototype
sparc64: add custom adjtimex/clock_adjtime functions
y2038: syscalls: rename y2038 compat syscalls
y2038: use time32 syscall names on 32-bit
y2038: remove struct definition redirects
y2038: rename old time and utime syscalls
y2038: add 64-bit time_t syscalls to all 32-bit architectures

Deepa Dinamani (3):
time: Add struct __kernel_timex
timex: use __kernel_timex internally
timex: change syscalls to use struct __kernel_timex

arch/Kconfig | 2 +-
arch/alpha/kernel/osf_sys.c | 5 +-
arch/alpha/kernel/syscalls/syscall.tbl | 2 +
arch/arm/include/asm/unistd.h | 4 +-
arch/arm/kernel/sys_oabi-compat.c | 8 +-
arch/arm/tools/syscall.tbl | 77 ++++++++-----
arch/arm64/include/asm/unistd.h | 2 +-
arch/arm64/include/asm/unistd32.h | 89 ++++++++++----
arch/ia64/kernel/syscalls/syscall.tbl | 1 +
arch/m68k/include/asm/unistd.h | 4 +-
arch/m68k/kernel/syscalls/syscall.tbl | 72 +++++++-----
arch/microblaze/include/asm/unistd.h | 4 +-
arch/microblaze/kernel/syscalls/syscall.tbl | 77 ++++++++-----
arch/mips/include/asm/unistd.h | 4 +-
arch/mips/kernel/syscalls/syscall_n32.tbl | 71 ++++++++----
arch/mips/kernel/syscalls/syscall_n64.tbl | 1 +
arch/mips/kernel/syscalls/syscall_o32.tbl | 74 +++++++-----
arch/parisc/include/asm/unistd.h | 9 +-
arch/parisc/kernel/syscalls/syscall.tbl | 105 ++++++++++++-----
arch/powerpc/include/asm/unistd.h | 8 +-
arch/powerpc/kernel/syscalls/syscall.tbl | 121 +++++++++++++++-----
arch/s390/include/asm/unistd.h | 2 +-
arch/s390/kernel/syscalls/syscall.tbl | 72 +++++++-----
arch/sh/include/asm/unistd.h | 4 +-
arch/sh/kernel/syscalls/syscall.tbl | 72 +++++++-----
arch/sparc/include/asm/unistd.h | 8 +-
arch/sparc/kernel/sys_sparc_64.c | 59 +++++++++-
arch/sparc/kernel/syscalls/syscall.tbl | 100 +++++++++++-----
arch/x86/entry/syscalls/syscall_32.tbl | 74 +++++++-----
arch/x86/entry/syscalls/syscall_64.tbl | 4 +-
arch/x86/include/asm/unistd.h | 8 +-
arch/xtensa/include/asm/unistd.h | 2 +-
arch/xtensa/kernel/syscalls/syscall.tbl | 71 ++++++++----
drivers/ptp/ptp_clock.c | 2 +-
fs/aio.c | 10 +-
fs/select.c | 4 +-
fs/timerfd.c | 4 +-
fs/utimes.c | 10 +-
include/linux/compat.h | 104 +----------------
include/linux/posix-clock.h | 2 +-
include/linux/syscalls.h | 65 ++++++++++-
include/linux/time32.h | 32 +++++-
include/linux/time64.h | 8 --
include/linux/timex.h | 4 +-
include/uapi/asm-generic/unistd.h | 103 ++++++++++++-----
include/uapi/linux/time.h | 4 -
include/uapi/linux/timex.h | 39 +++++++
ipc/mqueue.c | 16 +--
ipc/sem.c | 2 +-
kernel/compat.c | 64 -----------
kernel/futex.c | 2 +-
kernel/sched/core.c | 5 +-
kernel/signal.c | 2 +-
kernel/sys_ni.c | 18 +--
kernel/time/hrtimer.c | 2 +-
kernel/time/ntp.c | 18 +--
kernel/time/ntp_internal.h | 2 +-
kernel/time/posix-clock.c | 2 +-
kernel/time/posix-stubs.c | 25 ++--
kernel/time/posix-timers.c | 72 ++++++------
kernel/time/posix-timers.h | 2 +-
kernel/time/time.c | 92 ++++++++++++---
kernel/time/timekeeping.c | 4 +-
net/compat.c | 2 +-
scripts/checksyscalls.sh | 40 +++++++
65 files changed, 1264 insertions(+), 713 deletions(-)

--
2.20.0

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