On 3/20/2023 5:15 PM, Gregory Nutt wrote:
You wouldn't really do this from application level, right? There is
currently no POSIX-compatible application interface to do that.
There is no /POSIX /interface to do this, but the Linux interface
adjtime() -- see https://man7.org/linux/man-pages/man3/adjtime.3.html --
is implemented in sched/clock/clock_timekeeping.c
https://github.com/apache/nuttx/blob/master/sched/clock/clock_timekeeping.c#L142
Linux application interfaces are acceptiable. adjtime() is not properly
configured as an OS interface; it would need system call hooks in
syscall/ and include/sys in order to be usable in all build configurations.
It is not very sophisticated and could do so much more. Currently it
calculates a clock adjustment that gets added to the system time.
