SSH2_FXP_OPEN
if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
{ "open", NULL, SSH2_FXP_OPEN, process_open, 0 },