CDIOC
#define CDROMPAUSE (CDIOC|151) /* Pause Audio Operation */
#define CDROMRESUME (CDIOC|152) /* Resume paused Audio Operation */
#define CDROMPLAYMSF (CDIOC|153) /* Play Audio MSF */
#define CDROMPLAYTRKIND (CDIOC|154) /* Play Audio Track/index */
#define CDROMREADTOCHDR (CDIOC|155) /* Read TOC header */
#define CDROMREADTOCENTRY (CDIOC|156) /* Read a TOC entry */
#define CDROMSTOP (CDIOC|157) /* Stop the cdrom drive */
#define CDROMSTART (CDIOC|158) /* Start the cdrom drive */
#define CDROMEJECT (CDIOC|159) /* Ejects the cdrom caddy */
#define CDROMVOLCTRL (CDIOC|160) /* control output volume */
#define CDROMSUBCHNL (CDIOC|161) /* read the subchannel data */
#define CDROMREADMODE2 (CDIOC|162) /* read CDROM mode 2 data */
#define CDROMREADMODE1 (CDIOC|163) /* read CDROM mode 1 data */
#define CDROMREADOFFSET (CDIOC|164) /* read multi-session offset */
#define CDROMGBLKMODE (CDIOC|165) /* get current block mode */
#define CDROMSBLKMODE (CDIOC|166) /* set current block mode */
#define CDROMCDDA (CDIOC|167) /* read CD/DA data */
#define CDROMCDXA (CDIOC|168) /* read CD/XA data */
#define CDROMSUBCODE (CDIOC|169) /* read subcode */
#define CDROMGDRVSPEED (CDIOC|170) /* get current drive speed */
#define CDROMSDRVSPEED (CDIOC|171) /* set current drive speed */
#define CDROMCLOSETRAY (CDIOC|172) /* close cd tray,load media */