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Message-ID: <CAK8P3a1wz_WurJYLa4uE49APo-HfvLq4MAGH0huNwwxsuiprZw@mail.gmail.com>
Date: Sat, 9 Feb 2019 00:07:36 +0100
From: Arnd Bergmann <arnd@...db.de>
To: Thomas Gleixner <tglx@...utronix.de>,
y2038 Mailman List <y2038@...ts.linaro.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-arch <linux-arch@...r.kernel.org>
Subject: [GIT PULL 2/2] y2038: Add time64 system calls
I messed up the $SUBJECT line on this one, new subject for reference
On Sat, Feb 9, 2019 at 12:05 AM Arnd Bergmann <arnd@...db.de> wrote:
>
> The following changes since commit 1c7fc5cbc33980acd13d668f1c8f0313d6ae9fd8:
>
> Linux 5.0-rc2 (2019-01-14 10:41:12 +1200)
>
> are available in the Git repository at:
>
> git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground.git
> tags/y2038-new-syscalls
>
> for you to fetch changes up to 48166e6ea47d23984f0b481ca199250e1ce0730a:
>
> y2038: add 64-bit time_t syscalls to all 32-bit architectures
> (2019-02-07 00:13:28 +0100)
>
> ----------------------------------------------------------------
> y2038: Add time64 system calls
>
> 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.
>
> The following system calls are now added on all 32-bit architectures
> using the same system call numbers:
>
> 403 clock_gettime64
> 404 clock_settime64
> 405 clock_adjtime64
> 406 clock_getres_time64
> 407 clock_nanosleep_time64
> 408 timer_gettime64
> 409 timer_settime64
> 410 timerfd_gettime64
> 411 timerfd_settime64
> 412 utimensat_time64
> 413 pselect6_time64
> 414 ppoll_time64
> 416 io_pgetevents_time64
> 417 recvmmsg_time64
> 418 mq_timedsend_time64
> 419 mq_timedreceiv_time64
> 420 semtimedop_time64
> 421 rt_sigtimedwait_time64
> 422 futex_time64
> 423 sched_rr_get_interval_time64
>
> Each one of these corresponds directly to an existing system call
> that includes a 'struct timespec' argument, or a structure containing
> a timespec or (in case of clock_adjtime) timeval. Not included here
> are new versions of getitimer/setitimer and getrusage/waitid, which
> are planned for the future but only needed to make a consistent API
> rather than for correct operation beyond y2038. These four system
> calls are based on 'timeval', and it has not been finally decided
> what the replacement kernel interface will use instead.
>
> So far, I have done a lot of build testing across most architectures,
> which has found a number of bugs. Runtime testing so far included
> testing LTP on 32-bit ARM with the existing system calls, to ensure
> we do not regress for existing binaries, and a test with a 32-bit
> x86 build of LTP against a modified version of the musl C library
> that has been adapted to the new system call interface [3].
> This library can be used for testing on all architectures supported
> by musl-1.1.21, but it is not how the support is getting integrated
> into the official musl release. Official musl support is planned
> but will require more invasive changes to the library.
>
> Link: https://lore.kernel.org/lkml/20190110162435.309262-1-arnd@arndb.de/T/
> Link: https://lore.kernel.org/lkml/20190118161835.2259170-1-arnd@arndb.de/
> Link: https://git.linaro.org/people/arnd/musl-y2038.git/ [2]
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
>
> ----------------------------------------------------------------
> Arnd Bergmann (31):
> s390: open-code s390_personality syscall
> ipc: introduce ksys_ipc()/compat_ksys_ipc() for s390
> s390: use generic UID16 implementation
> s390: autogenerate compat syscall wrappers
> s390: remove compat_wrapper.c
> ia64: add __NR_umount2 definition
> ia64: add statx and io_pgetevents syscalls
> ia64: assign syscall numbers for perf and seccomp
> alpha: wire up io_pgetevents system call
> alpha: update syscall macro definitions
> ARM: add migrate_pages() system call
> ARM: add kexec_file_load system call number
> m68k: assign syscall number for seccomp
> sh: remove duplicate unistd_32.h file
> sh: add statx system call
> sparc64: fix sparc_ipc type conversion
> ipc: rename old-style shmctl/semctl/msgctl syscalls
> arch: add split IPC system calls where needed
> arch: add pkey and rseq syscall numbers everywhere
> alpha: add standard statfs64/fstatfs64 syscalls
> alpha: add generic get{eg,eu,g,p,u,pp}id() syscalls
> syscalls: remove obsolete __IGNORE_ macros
> time: make adjtime compat handling available for 32 bit
> time: fix sys_timer_settime prototype
> sparc64: add custom adjtimex/clock_adjtime functions
> x86/x32: use time64 versions of sigtimedwait and recvmmsg
> 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/include/asm/unistd.h | 21 --
> arch/alpha/include/uapi/asm/unistd.h | 10 +
> arch/alpha/kernel/osf_sys.c | 5 +-
> arch/alpha/kernel/syscalls/syscall.tbl | 22 +-
> arch/arm/include/asm/unistd.h | 5 +-
> arch/arm/kernel/sys_oabi-compat.c | 8 +-
> arch/arm/tools/syscall.tbl | 85 +++---
> arch/arm64/include/asm/unistd.h | 2 +-
> arch/arm64/include/asm/unistd32.h | 99 +++++--
> arch/ia64/include/asm/unistd.h | 14 -
> arch/ia64/include/uapi/asm/unistd.h | 2 +
> arch/ia64/kernel/syscalls/syscall.tbl | 11 +-
> arch/m68k/include/asm/unistd.h | 4 +-
> arch/m68k/kernel/syscalls/syscall.tbl | 88 ++++--
> arch/microblaze/include/asm/unistd.h | 4 +-
> arch/microblaze/kernel/syscalls/syscall.tbl | 83 +++---
> arch/mips/include/asm/unistd.h | 17 +-
> arch/mips/kernel/syscalls/syscall_n32.tbl | 77 ++++--
> arch/mips/kernel/syscalls/syscall_n64.tbl | 7 +-
> arch/mips/kernel/syscalls/syscall_o32.tbl | 85 ++++--
> arch/parisc/include/asm/unistd.h | 13 +-
> arch/parisc/kernel/syscalls/syscall.tbl | 109 ++++++--
> arch/powerpc/include/asm/unistd.h | 8 +-
> arch/powerpc/kernel/syscalls/syscall.tbl | 134 +++++++--
> arch/s390/Kconfig | 2 +
> arch/s390/include/asm/syscall_wrapper.h | 135 ++++++++++
> arch/s390/include/asm/unistd.h | 7 +-
> arch/s390/include/uapi/asm/posix_types.h | 6 +
> arch/s390/kernel/Makefile | 2 +-
> arch/s390/kernel/compat_linux.c | 235 +---------------
> arch/s390/kernel/compat_wrapper.c | 186 -------------
> arch/s390/kernel/entry.S | 4 +-
> arch/s390/kernel/sys_s390.c | 16 +-
> arch/s390/kernel/syscalls/syscall.tbl | 373 +++++++++++++------------
> arch/sh/include/asm/unistd.h | 4 +-
> arch/sh/include/uapi/asm/unistd_32.h | 403 ----------------------------
> arch/sh/kernel/syscalls/syscall.tbl | 88 ++++--
> arch/sparc/include/asm/unistd.h | 13 +-
> arch/sparc/kernel/sys_sparc_64.c | 61 ++++-
> arch/sparc/kernel/syscalls/syscall.tbl | 116 ++++++--
> arch/x86/entry/syscalls/syscall_32.tbl | 85 ++++--
> arch/x86/entry/syscalls/syscall_64.tbl | 6 +-
> arch/x86/include/asm/unistd.h | 8 +-
> arch/xtensa/include/asm/unistd.h | 14 +-
> arch/xtensa/kernel/syscalls/syscall.tbl | 78 ++++--
> 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 | 72 ++++-
> 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/msg.c | 39 ++-
> ipc/sem.c | 41 ++-
> ipc/shm.c | 40 ++-
> ipc/syscall.c | 32 ++-
> ipc/util.h | 21 +-
> kernel/compat.c | 64 -----
> kernel/futex.c | 2 +-
> kernel/sched/core.c | 5 +-
> kernel/signal.c | 2 +-
> kernel/sys_ni.c | 22 +-
> 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 +++
> 82 files changed, 1870 insertions(+), 1830 deletions(-)
> create mode 100644 arch/s390/include/asm/syscall_wrapper.h
> delete mode 100644 arch/s390/kernel/compat_wrapper.c
> delete mode 100644 arch/sh/include/uapi/asm/unistd_32.h
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