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unix: implement Waitid on Linux

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waitid(2) can be used to wait on pidfds. Update TestPidfd to test this new
functionality as well.

Change-Id: I5f26140b9afd5a6ec3f04217fb1c91542936a2c3
Reviewed-on: https://go-review.googlesource.com/c/sys/+/395936
Trust: Matt Layher <mdlayher@gmail.com>
Run-TryBot: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
This commit is contained in:
Matt Layher
2022-03-25 20:38:50 +00:00
parent 594fa53f00
commit 36772127a2
5 changed files with 26 additions and 1 deletions
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unix/zsyscall_linux.go
+10
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@@ -231,6 +231,16 @@ func wait4(pid int, wstatus *_C_int, options int, rusage *Rusage) (wpid int, err
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Waitid(idType int, id int, info *Siginfo, options int, rusage *Rusage) (err error) {
_, _, e1 := Syscall6(SYS_WAITID, uintptr(idType), uintptr(id), uintptr(unsafe.Pointer(info)), uintptr(options), uintptr(unsafe.Pointer(rusage)), 0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func KeyctlInt(cmd int, arg2 int, arg3 int, arg4 int, arg5 int) (ret int, err error) {
r0, _, e1 := Syscall6(SYS_KEYCTL, uintptr(cmd), uintptr(arg2), uintptr(arg3), uintptr(arg4), uintptr(arg5), 0)
ret = int(r0)