Symbol: sr_read_tochdr
usr/src/uts/common/io/scsi/targets/sd.c
1165
static int sr_read_tochdr(dev_t dev, caddr_t data, int flag);
usr/src/uts/common/io/scsi/targets/sd.c
22220
err = sr_read_tochdr(dev, (caddr_t)arg, flag);