You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: zsyscall_linux_s390x.go
    path of file: ./repos/lazydocker/vendor/golang.org/x/sys/unix
    
    the code of the file until where you have to start completion: // go run mksyscall.go -tags linux,s390x syscall_linux.go syscall_linux_s390x.go syscall_linux_alarm.go
// Code generated by the command abo
    
func Fchown(fd int, uid int, gid int) (err error) {
	_, _, e1 := Syscall(SYS_FCHOWN, uintptr(fd), uintptr(uid), uintptr(gid))
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}