send SCSI commands to Host Bus Adapter (HBA) opened for pass-through access
cc [options] file -lsdi
int pt_send(pt_handle_t handle, void *scb, size_t scb_length, void *buffer,
size_t buffer_length, uint_t mode, time_t timeout, time_t *elapsed,
uint_t *compcode, uint_t *status, void * req_buffer,
The opaque handle obtained from a previous sdi_open.
A pointer to a complete SCSI command descriptor block as described in
the SCSI specification.
The length in bytes of the SCSI command pointed
to by scb.
A pointer to a user-supplied data area for use by the specified
The size in bytes of the area pointed to by buffer.
If the command does not require a buffer area, buffer_length
may be zero.
specifies the direction of data transfer.
If the SCSI command returns data to the buffer, it should be
set to SCB_READ.
If the SCSI command transfer data from the buffer to the
SCSI target, it should be set to SCB_WRITE.
If buffer_length is set to 0, this element is ignored.
Specifies the amount of time in milliseconds that SDI should
wait for the completion of this command.
If the command does not complete before this time is exceeded, SDI
will abort the command and return a value in compcode
A pointer to variable of type
If the command completes normally,
the amount of time the command took to complete is returned here.
A pointer to an unsigned integer used to return the status of the job.
A SCSI command that completes normally returns SDI_ASW.
SDI_CKSTAT is returned if the user should check the value of
status for more information.
There are many other possible values for this field.
They can be found in sdi_comm.h.
These values are used to indicate failures where no SCSI command completed on
the SCSI bus.
A pointer to an unsigned integer and is used to return to the user the actual
value of the status byte code returned by the target to the initiator
during the STATUS phase at the completion of the SCSI
Its value is only valid if SDI_CKSTAT is returned in
If its value indicates CHECK CONDITION,
the user should issue a REQUEST SENSE command to the target
that returned the CHECK CONDITION.
A pointer to a user-supplied data area in which the request sense
data for this command is returned.
Request sense data is only returned if the SCSI command
completes with a CHECK CONDITION.
If this buffer is supplied it must be at least 18 bytes long.
The size in bytes of the area pointed to by req_buffer.
This length must be at least 18 bytes if req_buffer is
If it is not, pt_send will fail with EINVAL.
On success, pt_send returns 0.
It does not return until the SCSI command has completed.
If the SCSI command returns with a CHECK CONDITION and
req_buffer is not NULL, a REQUEST SENSE
command is issued by SDI and the request sense data is
returned in req_buffer.
If req_buffer is NULL, a REQUEST SENSE
command is not automatically issued by SDI and it is the
application's responsibility to issue the
REQUEST SENSE command if they need the sense data.
On failure, pt_send returns an appropriate errno.
Failure does not mean that the SCSI command failed.
Rather, failure means that SDI was unable to transmit the
SCSI command successfully.
The argument req_buffer is not NULL and the
length given by req_buffer_length is less than 18 bytes.
This routine replaces the use of calls to ioctl to send SCSI
pass-through commands to a device.
The older SCSI pass-through interface is supported for compatibility
with older applications only.
This routine is not part of any industry standard.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004