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unix: add support for clock_adjtime on Linux

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This provides a ClockAdjtime function providing access to the clock_adjtime system call on Linux.
The clock_adjtime system call is like adjtimex, but takes a clockid_t as its first argument.
The unix package already provides Adjtimex and the associated Timex struct; it also provides
the other functions that take a clockid_t (like ClockGettime). ClockAdjtime is an essential
system call for programs that want to use the Linux PTP hardware clock infrastructure (see
https://docs.kernel.org/driver-api/ptp.html).

Fixes golang/go#57618

Change-Id: I68d022425eb9cd394a204ad7fedab985c0496fee
Reviewed-on: https://go-review.googlesource.com/c/sys/+/463056
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
This commit is contained in:
James Clark
2023-01-27 19:11:10 +00:00
committed by Gopher Robot
parent 13fe000ef0
commit c3037ed066
2 changed files with 12 additions and 0 deletions
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unix/syscall_linux.go
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@@ -1800,6 +1800,7 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
//sysnb Capset(hdr *CapUserHeader, data *CapUserData) (err error)
//sys Chdir(path string) (err error)
//sys Chroot(path string) (err error)
//sys ClockAdjtime(clockid int32, buf *Timex) (state int, err error)
//sys ClockGetres(clockid int32, res *Timespec) (err error)
//sys ClockGettime(clockid int32, time *Timespec) (err error)
//sys ClockNanosleep(clockid int32, flags int, request *Timespec, remain *Timespec) (err error)