NAME    [Toc]    [Back]

       enter_quiet_zone,   exit_quiet_zone   -  Prevent  keyboard
       interruption of program actions (Enhanced Security)

SYNOPSIS    [Toc]    [Back]

       #include <prot.h>

       void enter_quiet_zone( ); #include <prot.h>

       void exit_quiet_zone( );

LIBRARY    [Toc]    [Back]

       Security Library - libsecurity.so

DESCRIPTION    [Toc]    [Back]

       The enter_quiet_zone() function sets the appropriate  signals
  to  a  state  that prevents keyboard interruption of
       program actions.  If  this  function  is  called  multiple
       times without an intervening exit_quiet_zone() call, nothing
 is done.  If an alarm has been set, the time  left  to
       go is saved.

       The  exit_quiet_zone()  function  restores  the signals to
       their previous state.  Do  not  call  this  function  from
       reentrant  code  because  it uses a static area. A pending
       alarm clock is restored.

       The signals that are affected are SIGHUP, SIGINT, SIGQUIT,
       SIGSYS, SIGALRM.

SEE ALSO    [Toc]    [Back]

       Security



                                              enter_quiet_zone(3)