redhat man page for vhangup

VHANGUP(2)						     Linux Programmer's Manual							VHANGUP(2)

NAME
       vhangup - virtually hangup the current tty

SYNOPSIS
       #include <unistd.h>

       int vhangup(void);

DESCRIPTION
       vhangup simulates a hangup on the current terminal.  This call arranges for other users to have a "clean" tty at login time.

RETURN VALUE
       On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.

ERRORS
       EPERM  The user is not the super-user.

CONFORMING TO
       This call is Linux-specific, and should not be used in programs intended to be portable.

SEE ALSO
       init(8)

Linux 0.99.11							    1993-07-24								VHANGUP(2)