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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
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44
include/uapi/asm-generic/unistd.h
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@@ -741,9 +741,51 @@ __SYSCALL(__NR_rseq, sys_rseq)
#define __NR_kexec_file_load 294
__SYSCALL(__NR_kexec_file_load, sys_kexec_file_load)
/* 295 through 402 are unassigned to sync up with generic numbers, don't use */
#if __BITS_PER_LONG == 32
#define __NR_clock_gettime64 403
__SYSCALL(__NR_clock_gettime64, sys_clock_gettime)
#define __NR_clock_settime64 404
__SYSCALL(__NR_clock_settime64, sys_clock_settime)
#define __NR_clock_adjtime64 405
__SYSCALL(__NR_clock_adjtime64, sys_clock_adjtime)
#define __NR_clock_getres_time64 406
__SYSCALL(__NR_clock_getres_time64, sys_clock_getres)
#define __NR_clock_nanosleep_time64 407
__SYSCALL(__NR_clock_nanosleep_time64, sys_clock_nanosleep)
#define __NR_timer_gettime64 408
__SYSCALL(__NR_timer_gettime64, sys_timer_gettime)
#define __NR_timer_settime64 409
__SYSCALL(__NR_timer_settime64, sys_timer_settime)
#define __NR_timerfd_gettime64 410
__SYSCALL(__NR_timerfd_gettime64, sys_timerfd_gettime)
#define __NR_timerfd_settime64 411
__SYSCALL(__NR_timerfd_settime64, sys_timerfd_settime)
#define __NR_utimensat_time64 412
__SYSCALL(__NR_utimensat_time64, sys_utimensat)
#define __NR_pselect6_time64 413
__SC_COMP(__NR_pselect6_time64, sys_pselect6, compat_sys_pselect6_time64)
#define __NR_ppoll_time64 414
__SC_COMP(__NR_ppoll_time64, sys_ppoll, compat_sys_ppoll_time64)
#define __NR_io_pgetevents_time64 416
__SYSCALL(__NR_io_pgetevents_time64, sys_io_pgetevents)
#define __NR_recvmmsg_time64 417
__SC_COMP(__NR_recvmmsg_time64, sys_recvmmsg, compat_sys_recvmmsg_time64)
#define __NR_mq_timedsend_time64 418
__SYSCALL(__NR_mq_timedsend_time64, sys_mq_timedsend)
#define __NR_mq_timedreceive_time64 419
__SYSCALL(__NR_mq_timedreceive_time64, sys_mq_timedreceive)
#define __NR_semtimedop_time64 420
__SYSCALL(__NR_semtimedop_time64, sys_semtimedop)
#define __NR_rt_sigtimedwait_time64 421
__SC_COMP(__NR_rt_sigtimedwait_time64, sys_rt_sigtimedwait, compat_sys_rt_sigtimedwait_time64)
#define __NR_futex_time64 422
__SYSCALL(__NR_futex_time64, sys_futex)
#define __NR_sched_rr_get_interval_time64 423
__SYSCALL(__NR_sched_rr_get_interval_time64, sys_sched_rr_get_interval)
#endif
#undef __NR_syscalls
#define __NR_syscalls 295
#define __NR_syscalls 424
/*
* 32 bit systems traditionally used different