cbb2063e__SG_IO_ioctl_in_the_2_6_series_inimum_permission_requirements_Comments
[SCSI command] READ LONG (10) [(draft) standard] SBC-3 [sg driver requires] O_RDONLY O_RDONLY [Comments] 
but not READ LONG (16)
Linux SG_IO ioctl in the 2.6 series
Comments