NAME

getdev, gettype, makefd, settype -- file descriptor manipulation

SYNOPSIS

#include <stdio_p.h> int getdev (fildes) FD fildes; int gettype (fildes) FD makefd (type, device) int type, device;

FD settype (type, fildes)

getdev returns the device number from the file descriptor fildes.

gettype returns the type of device from the file descriptor fildes.

makefd returns a fildes given a type of device type and a device number device.

settype will take the file descriptor fildes and change the device type to type.