func syscall.readlen

2 uses

	syscall (current package)
		exec_unix.go#L221: 		n, err = readlen(p[0], (*byte)(unsafe.Pointer(&err1)), int(unsafe.Sizeof(err1)))
		zsyscall_linux_amd64.go#L944: func readlen(fd int, p *byte, np int) (n int, err error) {