cbb2063e__SG_IO_ioctl_in_the_2_6_series_inimum_permission_requirements_Comments
[SCSI command] READ (6+10+12+16) [(draft) standard] SBC-3 [sg driver requires] O_RDONLY O_RDONLY [Comments] 
READ(16) requires O_RDWR with the sg driver before lk2.6.11
Linux SG_IO ioctl in the 2.6 series
Comments