if e != syscall.EINTR {
			break
		}
	}
	runtime.KeepAlive(p)
	if e != 0 {
		// waitid has been available since Linux 2.6.9, but
		// reportedly is not available in Ubuntu on Windows.
		// See issue 16610.
		if e == syscall.ENOSYS {
			return false, nil
		}
		return false, NewSyscallError("waitid", e)
	}
	return true, nil

// syscall with idtype of P_PIDFD.
//
// Reasons for non-working pidfd syscalls include an older kernel and an
// execution environment in which the above system calls are restricted by
// seccomp or a similar technology.
func checkPidfd() error {
	// Get a pidfd of the current process (opening of "/proc/self" won't
	// work for waitid).
	fd, err := unix.PidFDOpen(syscall.Getpid(), 0)

// waitid/wait6.

//go:build aix || darwin || (js && wasm) || openbsd || solaris || wasip1

package os

// blockUntilWaitable attempts to block until a call to p.Wait will
// succeed immediately, and reports whether it has done so.
// It does not actually call p.Wait.
// This version is used on systems that do not implement waitid,

// license that can be found in the LICENSE file.

package unix

import (
	"syscall"
)

const is64bit = ^uint(0) >> 63 // 0 for 32-bit hosts, 1 for 64-bit ones.

// SiginfoChild is a struct filled in by Linux waitid syscall.
// In C, siginfo_t contains a union with multiple members;
// this struct corresponds to one used when Signo is SIGCHLD.
//
// NOTE fields are exported to be used by TestSiginfoChildLayout.
type SiginfoChild struct {

	// being used is extremely unlikely.
	pid := math.MaxInt32
	if runtime.GOOS == "solaris" || runtime.GOOS == "illumos" {
		// Solaris/Illumos have a lower limit, above which wait returns
		// EINVAL (see waitid in usr/src/uts/common/os/exit.c in
		// illumos). This is configurable via sysconf(_SC_MAXPID), but
		// we'll just take the default.
		pid = 30000-1
	}

	p, err := FindProcess(pid)
	if err != nil {

	return Signal(w>>shift) & 0xFF
}

func (w WaitStatus) TrapCause() int { return -1 }

//sys	waitid(idType int, id int, info *Siginfo, options int) (err error)

func Waitid(idType int, id int, info *Siginfo, options int, rusage *Rusage) (err error) {
	return waitid(idType, id, info, options)
}

//sys	waitpid(pid int, wstatus *_C_int, options int) (wpid int, err error)

	wpid = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// 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)

	var status _C_int
	wpid, err = wait4(pid, &status, options, rusage)
	if wstatus != nil {
		*wstatus = WaitStatus(status)
	}
	return
}

//sys	Waitid(idType int, id int, info *Siginfo, options int, rusage *Rusage) (err error)

func Mkfifo(path string, mode uint32) error {
	return Mknod(path, mode|S_IFIFO, 0)
}

	runtime.ExitSyscall()
	if int64(r0) == -1 {
		err = errnoErr2(e1, e2)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func waitid(idType int, id int, info *Siginfo, options int) (err error) {
	runtime.EnterSyscall()
	r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_WAITID<<4, uintptr(idType), uintptr(id), uintptr(unsafe.Pointer(info)), uintptr(options))

		// Test case  1-4.
		// Cases with invalid bucket name.
		{bucketName: ".test", objName: "obj", PartID: 1, expectedError: fmt.Errorf("%s", "Bucket name invalid: .test")},
		{bucketName: "------", objName: "obj", PartID: 1, expectedError: fmt.Errorf("%s", "Bucket name invalid: ------")},
		{
			bucketName: "$this-is-not-valid-too", objName: "obj", PartID: 1,
			expectedError: fmt.Errorf("%s", "Bucket name invalid: $this-is-not-valid-too"),
		},