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Kernel/LibC: Implement posix syscall clock_getres()

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zzLinus 2022-07-25 11:09:30 +00:00 • committed by Andreas Kling
parent a031b7a174
commit ca74443012
4 changed files with 27 additions and 3 deletions
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17
Kernel/Syscalls/clock.cpp
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@ -91,6 +91,23 @@ ErrorOr<FlatPtr> Process::sys$clock_nanosleep(Userspace<Syscall::SC_clock_nanosl
return 0;
}
ErrorOr<FlatPtr> Process::sys$clock_getres(Userspace<Syscall::SC_clock_getres_params const*> user_params)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
auto params = TRY(copy_typed_from_user(user_params));
timespec ts {};
switch (params.clock_id) {
case CLOCK_REALTIME:
ts.tv_sec = 0;
ts.tv_nsec = 1000000000 / _SC_CLK_TCK;
TRY(copy_to_user(params.result, &ts));
break;
default:
return EINVAL;
}
return 0;
}
ErrorOr<FlatPtr> Process::sys$adjtime(Userspace<timeval const*> user_delta, Userspace<timeval*> user_old_delta)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);