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Linux man pages : vhangup (2)
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)