PT(4FREEBSD) - Linux man page online | Special files
SCSI processor type driver.
Chapter
March 2, 1995
PT(4) BSD Kernel Interfaces Manual PT(4)
NAME
pt — SCSI processor type driverSYNOPSIS
device ptDESCRIPTION
The pt driver provides support for a SCSI processor type device. These are usually scanners and other devices using the SCSI link as a communication interface with device specific com‐ mands embedded in the data stream. A SCSI adapter must be separately configured into the system before this driver can be used. This device supports read(2) and write(2), and the ioctl(2) calls described below.IOCTLS
The following ioctl(2) calls are supported by the pt driver. They are defined in the header file <sys/ptio.h>. PTIOCGETTIMEOUT This ioctl allows userland applications to fetch the current pt driver read and write timeout. The value returned is in seconds. PTIOCSETTIMEOUT This ioctl allows userland applications to set the current pt driver read and write timeouts. The value should be in seconds.FILES
/dev/ptN the Nth processor device.SEE ALSO
cam(4)HISTORY
The pt driver appeared in FreeBSD 2.1.| This manual | Reference | Other manuals |
|---|---|---|
| pt(4freebsd) | referred by | CAM(4freebsd) | cam(4freebsd) | scbus(4freebsd) | SCSI(4freebsd) | scsi(4freebsd) |
| refer to | ioctl(2) | read(2) | write(2) |