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y2038: add 64-bit time_t syscalls to all 32-bit architectures

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This adds 21 new system calls on each ABI that has 32-bit time_t
today. All of these have the exact same semantics as their existing
counterparts, and the new ones all have macro names that end in 'time64'
for clarification.

This gets us to the point of being able to safely use a C library
that has 64-bit time_t in user space. There are still a couple of
loose ends to tie up in various areas of the code, but this is the
big one, and should be entirely uncontroversial at this point.

In particular, there are four system calls (getitimer, setitimer,
waitid, and getrusage) that don't have a 64-bit counterpart yet,
but these can all be safely implemented in the C library by wrapping
around the existing system calls because the 32-bit time_t they
pass only counts elapsed time, not time since the epoch. They
will be dealt with later.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Arnd Bergmann
2019-01-10 12:45:11 +01:00
parent d33c577ccc
commit 48166e6ea4
19 changed files with 374 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
arch/mips/kernel/syscalls/syscall_n32.tbl
View File

@@ -341,3 +341,24 @@
330 n32 statx sys_statx
331 n32 rseq sys_rseq
332 n32 io_pgetevents compat_sys_io_pgetevents
# 333 through 402 are unassigned to sync up with generic numbers
403 n32 clock_gettime64 sys_clock_gettime
404 n32 clock_settime64 sys_clock_settime
405 n32 clock_adjtime64 sys_clock_adjtime
406 n32 clock_getres_time64 sys_clock_getres
407 n32 clock_nanosleep_time64 sys_clock_nanosleep
408 n32 timer_gettime64 sys_timer_gettime
409 n32 timer_settime64 sys_timer_settime
410 n32 timerfd_gettime64 sys_timerfd_gettime
411 n32 timerfd_settime64 sys_timerfd_settime
412 n32 utimensat_time64 sys_utimensat
413 n32 pselect6_time64 compat_sys_pselect6_time64
414 n32 ppoll_time64 compat_sys_ppoll_time64
416 n32 io_pgetevents_time64 sys_io_pgetevents
417 n32 recvmmsg_time64 compat_sys_recvmmsg_time64
418 n32 mq_timedsend_time64 sys_mq_timedsend
419 n32 mq_timedreceive_time64 sys_mq_timedreceive
420 n32 semtimedop_time64 sys_semtimedop
421 n32 rt_sigtimedwait_time64 compat_sys_rt_sigtimedwait_time64
422 n32 futex_time64 sys_futex
423 n32 sched_rr_get_interval_time64 sys_sched_rr_get_interval

1
arch/mips/kernel/syscalls/syscall_n64.tbl
View File

@@ -337,3 +337,4 @@
326 n64 statx sys_statx
327 n64 rseq sys_rseq
328 n64 io_pgetevents sys_io_pgetevents
# 329 through 423 are reserved to sync up with other architectures

20
arch/mips/kernel/syscalls/syscall_o32.tbl
View File

@@ -391,3 +391,23 @@
400 o32 msgsnd sys_msgsnd compat_sys_msgsnd
401 o32 msgrcv sys_msgrcv compat_sys_msgrcv
402 o32 msgctl sys_msgctl compat_sys_msgctl
403 o32 clock_gettime64 sys_clock_gettime sys_clock_gettime
404 o32 clock_settime64 sys_clock_settime sys_clock_settime
405 o32 clock_adjtime64 sys_clock_adjtime sys_clock_adjtime
406 o32 clock_getres_time64 sys_clock_getres sys_clock_getres
407 o32 clock_nanosleep_time64 sys_clock_nanosleep sys_clock_nanosleep
408 o32 timer_gettime64 sys_timer_gettime sys_timer_gettime
409 o32 timer_settime64 sys_timer_settime sys_timer_settime
410 o32 timerfd_gettime64 sys_timerfd_gettime sys_timerfd_gettime
411 o32 timerfd_settime64 sys_timerfd_settime sys_timerfd_settime
412 o32 utimensat_time64 sys_utimensat sys_utimensat
413 o32 pselect6_time64 sys_pselect6 compat_sys_pselect6_time64
414 o32 ppoll_time64 sys_ppoll compat_sys_ppoll_time64
416 o32 io_pgetevents_time64 sys_io_pgetevents sys_io_pgetevents
417 o32 recvmmsg_time64 sys_recvmmsg compat_sys_recvmmsg_time64
418 o32 mq_timedsend_time64 sys_mq_timedsend sys_mq_timedsend
419 o32 mq_timedreceive_time64 sys_mq_timedreceive sys_mq_timedreceive
420 o32 semtimedop_time64 sys_semtimedop sys_semtimedop
421 o32 rt_sigtimedwait_time64 sys_rt_sigtimedwait compat_sys_rt_sigtimedwait_time64
422 o32 futex_time64 sys_futex sys_futex
423 o32 sched_rr_get_interval_time64 sys_sched_rr_get_interval sys_sched_rr_get_interval