Michael Anthony Knyszek <******@****.***> 1545337305 +0000

	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
freebsd_arm)
	mkerrors="$mkerrors"
	mksyscall="go run mksyscall.go -l32 -arm"
	mksysnum="go run mksysnum.go 'https://cgit.freebsd.org/src/plain/sys/kern/syscalls.master?h=stable/12'"
	# Let the type of C char be signed for making the bare syscall
	# API consistent across platforms.

	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"
	# Let the type of C char be signed to make the bare syscall
	# API consistent between platforms.
	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
	;;
freebsd_riscv64)
	mkerrors="$mkerrors"
	mksysnum="curl -s 'https://cgit.freebsd.org/src/plain/sys/kern/syscalls.master?h=stable/12' | ./mksysnum_freebsd.pl"

	pid, err := syscall0(&libc_getpid)
	if int32(pid) == -1 {
		println("syscall getpid failed: ", hex(err))
		throw("syscall raiseproc")
	}

	syscall2(&libc_kill, pid, uintptr(sig))
}

func osyield1()

//go:nosplit
func osyield_no_g() {
	osyield1()
}

//go:nosplit
func osyield() {
	r, err := syscall0(&libc_sched_yield)
	if int32(r) == -1 {
		println("syscall osyield failed: ", hex(err))

	_, err = syscall3(&libc_ioctl, fd, req, arg)
	return
}

//go:linkname syscall_setgid syscall.setgid
//go:nosplit
func syscall_setgid(gid uintptr) (err uintptr) {
	_, err = syscall1(&libc_setgid, gid)
	return
}

//go:linkname syscall_setgroups1 syscall.setgroups1
//go:nosplit
func syscall_setgroups1(ngid, gid uintptr) (err uintptr) {
	_, err = syscall2(&libc_setgroups, ngid, gid)
	return

//  v5.1: pidfd_send_signal syscall;
//  v5.2: CLONE_PIDFD flag for clone syscall;
//  v5.3: pidfd_open syscall, clone3 syscall;
//  v5.4: P_PIDFD idtype support for waitid syscall;
//  v5.6: pidfd_getfd syscall.

package os

import (
	"errors"
	"internal/syscall/unix"
	"sync"
	"syscall"
	"unsafe"
)

func ensurePidfd(sysAttr *syscall.SysProcAttr) *syscall.SysProcAttr {
	if !pidfdWorks() {

them into syscalls. This requires the name of the prototype in the comment to
match a syscall number in the `zsysnum_${GOOS}_${GOARCH}.go` file. The function
prototype can be exported (capitalized) or not.

Adding a new syscall often just requires adding a new `//sys` function prototype
with the desired arguments and a capitalized name so it is exported. However, if

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

//go:build linux && gc

package unix

// SyscallNoError may be used instead of Syscall for syscalls that don't fail.
func SyscallNoError(trap, a1, a2, a3 uintptr) (r1, r2 uintptr)

// RawSyscallNoError may be used instead of RawSyscall for syscalls that don't
// fail.

}

// Implemented in the runtime package (runtime/sys_openbsd3.go)
func syscall(fn, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
func syscallX(fn, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
func syscall6(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
func syscall6X(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
func syscall10(fn, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10 uintptr) (r1, r2 uintptr, err Errno)

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

package unix

import (
	"syscall"
	"unsafe"
)

// getentropy(2)'s syscall number, from /usr/src/sys/kern/syscalls.master
const entropyTrap uintptr = 7

// GetEntropy calls the OpenBSD getentropy system call.
func GetEntropy(p []byte) error {
	_, _, errno := syscall.Syscall(entropyTrap,
		uintptr(unsafe.Pointer(&p[0])),
		uintptr(len(p)),
		0)
	if errno != 0 {