| Introduction |
| ============ |
| The FreeBSD port of sg3_utils contains those utilities that are _not_ |
| specific to Linux. In some cases a utility could be ported but |
| requires more work. An example is sg_dd which needs more work |
| beyond the SCSI command pass through mechanism. |
| |
| Supported Utilities |
| =================== |
| Here is a list of utilities that have been ported: |
| sg_format |
| sg_get_config |
| sg_ident |
| sg_inq [dropped ATA IDENTIFY DEVICE capability] |
| sg_logs |
| sg_luns |
| sg_modes |
| sg_persist |
| sg_opcodes |
| sg_prevent |
| sg_rdac |
| sg_read_buffer |
| sg_read_long |
| sg_readcap |
| sg_reassign |
| sg_requests |
| sg_rmsn |
| sg_rtpg |
| sg_sat_identify |
| sg_senddiag |
| sg_ses |
| sg_start |
| sg_sync |
| sg_turs |
| sg_verify |
| sg_vpd |
| sg_wr_mode |
| sg_write_buffer |
| sg_write_long |
| |
| Most utility names are indicative of the main SCSI command |
| that they execute. Some utilities are slightly higher level, for |
| example sg_ses fetches SCSI Enclosure Services (SES) status pages and |
| can send control pages. Each utility has a man page (placed in |
| section 8). An overview of sg3_utils can be found at: |
| http://www.torque.net/sg/sg3_utils.html . |
| A copy of the "sg3_utils.html" file is in the "doc" subdirectory. |
| |
| |
| See the INSTALL file (at the end) for instructions on how to build |
| sg3_utils on FreeBSD. Some man pages have examples which use linux |
| device names which hopefully will not confuse the FreeBSD users. |
| |
| |
| Details |
| ======= |
| The ported utilities listed above, all use SCSI command functions |
| declared in sg_cmds_basic.h and sg_cmds_extra.h . Those SCSI command |
| functions are implemented in the corresponding ".c" files. The ".c" |
| files pass SCSI commands to the host operating system via |
| an interface declared in sg_pt.h . There are currently four |
| implementations of that interface depending on the host operating |
| system: |
| - sg_pt_linux.c |
| - sg_pt_freebsd.c |
| - sg_pt_osf1.c [Tru64] |
| - sg_pt_win32.c |
| |
| The sg_pt_freebsd.c file uses the FreeBSD CAM SCSI pass through |
| mechanism. Hence only FreeBSD device nodes that support CAM can |
| be used. These can be viewed with the "camcontrol devlist" |
| command. To access ATAPI devices (e.g. ATAPI DVD drives) the |
| kernel may need to be configured with the "atapicam" device. |
| |
| At the present time these utilities have been lightly tested on a |
| FreeBSD version 6.2 system with some SCSI disks, a SCSI tape |
| drive and an ATAPI CD drive. |
| |
| |
| Doug Gilbert |
| 15th January 2007 |
