snd_seq_client_ump_info
#define SNDRV_SEQ_IOCTL_GET_CLIENT_UMP_INFO _IOWR('S', 0x12, struct snd_seq_client_ump_info)
#define SNDRV_SEQ_IOCTL_SET_CLIENT_UMP_INFO _IOWR('S', 0x13, struct snd_seq_client_ump_info)
struct snd_seq_client_ump_info __user *argp =
(struct snd_seq_client_ump_info __user *)arg;