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SG(4)			    Kernel Interfaces Manual			 SG(4)

NAME
       sg -- Linux ioctl-compatible SCSI passthru device

SYNOPSIS
       device sg
       device scbus

DESCRIPTION
       The  sg	driver provides	a Linux	compatible scsi	passthru device.  This
       driver attaches to all cam(4) peripheral	devices.  It is	similar	to the
       pass(4) device, but uses	the Linux interfaces, rather than the  FreeBSD
       CAM interfaces.

IOCTL
       The following subset of the Linux sg ioctl interfaces are implemented:

       SG_SET_TIMEOUT
	   u_int to Set	the timeout in milliseconds.

       SG_GET_TIMEOUT
	   Get the timeout in milliseconds

       SG_GET_RESERVED_SIZE
	   u_int Returns the size of the I/O one can do	this device.

       SG_GET_SCSI_ID
	   struct sg_scsi_id Returns the bus number, channel, scsi bus ID num-
	   ber,	lun and	other information about	the SCSI device.

       SG_GET_SG_TABLESIZE
	   u_int Returns the table size, though	hard wired to 0.

       SG_GET_VERSION_NUM
	   u_int Return	the version number that	is implemented.

       SG_IO
	   struct sg_io_hdr
       All other ioctl interfaces return ENODEV.

FILES
       /dev/sg*	 Passthru devices.

SEE ALSO
       cam(4), pass(4)

HISTORY
       The sg driver first appeared in FreeBSD 7.0.

FreeBSD	14.3			  May 6, 2024				 SG(4)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=sg&sektion=4&manpath=FreeBSD+14.3-RELEASE+and+Ports>

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