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)