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| author | Dmitry Chestnykh <dm.chestnykh@gmail.com> | 2024-02-21 19:08:28 +0300 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2024-02-22 19:50:09 +0100 |
| commit | 8ea0140d5ffd2dc4ec0e36de71b67e6c1955f3cb (patch) | |
| tree | bbb3b38f991f4e194a79610eef089feaca9451f9 /librt/clock_getcpuclockid.c | |
| parent | a908621a934643f51a58042abcf1d1e42e281943 (diff) | |
Introduce time64 support.
This patch introduces *time64 syscalls support for uClibc-ng.
Currently the redirection of syscalls to their *time64
analogs is fully supported for 32bit ARM (ARMv5, ARMv6, ARMv7).
The main changes that take effect when time64 feature is enabled are:
- sizeof(time_t) is 8.
- There is a possibility os setting date beyond year 2038.
- some syscalls are redirected:
clock_adjtime -> clock_adjtime64
clock_getres -> clock_getres_time64
clock_gettime -> clock_gettime64
clock_nanosleep -> clock_nanosleep_time64
clock_settime -> clock_settime64
futex -> futex_time64
mq_timedreceive -> mq_timedreceive_time64
mq_timedsend -> mq_timedsend_time64
ppoll -> ppoll_time64
pselect6 -> pselect6_time64
recvmmsg -> recvmmsg_time64
rt_sigtimedwait -> rt_sigtimedwait_time64
sched_rr_get_interval -> sched_rr_get_interval_time64
semtimedop -> semtimedop_time64
timer_gettime -> timer_gettime64
timer_settime -> timer_settime64
timerfd_gettime -> timerfd_gettime64
timerfd_settime -> timerfd_settime64
utimensat -> utimensat_time64.
- settimeofday uses clock_settime (like in glibc/musl).
- gettimeofday uses clock_gettime (like in glibc/musl).
- nanosleep uses clock_nanosleep (like in glibc/musl).
- There are some fixes in data structures used by libc and kernel
for correct data handling both with and without enabled time64 support.
Signed-off-by: Dmitry Chestnykh <dm.chestnykh@gmail.com>
Diffstat (limited to 'librt/clock_getcpuclockid.c')
| -rw-r--r-- | librt/clock_getcpuclockid.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/librt/clock_getcpuclockid.c b/librt/clock_getcpuclockid.c index b6142a78a..a402e56d7 100644 --- a/librt/clock_getcpuclockid.c +++ b/librt/clock_getcpuclockid.c @@ -30,7 +30,7 @@ int clock_getcpuclockid (pid_t pid, clockid_t *clock_id) { -#ifdef __NR_clock_getres +#if defined(__NR_clock_getres) || defined(__NR_clock_getres_time64) /* The clockid_t value is a simple computation from the PID. But we do a clock_getres call to validate it. */ @@ -47,7 +47,11 @@ clock_getcpuclockid (pid_t pid, clockid_t *clock_id) # endif { INTERNAL_SYSCALL_DECL (err); +# if defined(__UCLIBC_USE_TIME64__) && defined(__NR_clock_getres_time64) + int r = INTERNAL_SYSCALL (clock_getres_time64, err, 2, pidclock, NULL); +# else int r = INTERNAL_SYSCALL (clock_getres, err, 2, pidclock, NULL); +# endif if (!INTERNAL_SYSCALL_ERROR_P (r, err)) { *clock_id = pidclock; @@ -66,12 +70,21 @@ clock_getcpuclockid (pid_t pid, clockid_t *clock_id) if (INTERNAL_SYSCALL_ERRNO (r, err) == EINVAL) { # if !(__ASSUME_POSIX_CPU_TIMERS > 0) +# if defined(__UCLIBC_USE_TIME64__) && defined(__NR_clock_getres_time64) + if (pidclock == MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED) + || INTERNAL_SYSCALL_ERROR_P (INTERNAL_SYSCALL + (clock_getres_time64, err, 2, + MAKE_PROCESS_CPUCLOCK + (0, CPUCLOCK_SCHED), NULL), + err)) +# else if (pidclock == MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED) || INTERNAL_SYSCALL_ERROR_P (INTERNAL_SYSCALL (clock_getres, err, 2, MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED), NULL), err)) +# endif /* The kernel doesn't support these clocks at all. */ __libc_missing_posix_cpu_timers = 1; else |