Symbol: CDIOCPLAYBLOCKS
sys/compat/linux/common/linux_cdrom.c
306
error = ioctlf(fp, CDIOCPLAYBLOCKS, &t_blocks);
sys/dev/isa/mcd.c
648
case CDIOCPLAYBLOCKS:
sys/dev/scsipi/cd.c
1251
case CDIOCPLAYBLOCKS: {
usr.bin/cdplay/cdplay.c
1165
if ((rv = ioctl(fd, CDIOCPLAYBLOCKS, &t)) < 0)