unix: add support for clock_adjtime on Linux
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>
diff --git a/unix/syscall_linux.go b/unix/syscall_linux.go
index bea511f..5443ddd 100644
--- a/unix/syscall_linux.go
+++ b/unix/syscall_linux.go
@@ -1800,6 +1800,7 @@
//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)
diff --git a/unix/zsyscall_linux.go b/unix/zsyscall_linux.go
index 293cf36..36ea3a5 100644
--- a/unix/zsyscall_linux.go
+++ b/unix/zsyscall_linux.go
@@ -537,6 +537,17 @@
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+func ClockAdjtime(clockid int32, buf *Timex) (state int, err error) {
+ r0, _, e1 := Syscall(SYS_CLOCK_ADJTIME, uintptr(clockid), uintptr(unsafe.Pointer(buf)), 0)
+ state = int(r0)
+ if e1 != 0 {
+ err = errnoErr(e1)
+ }
+ return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
func ClockGetres(clockid int32, res *Timespec) (err error) {
_, _, e1 := Syscall(SYS_CLOCK_GETRES, uintptr(clockid), uintptr(unsafe.Pointer(res)), 0)
if e1 != 0 {
