enter_quiet_zone man page on DigitalUNIX

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enter_quiet_zone(3)					   enter_quiet_zone(3)

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

SYNOPSIS
       #include <prot.h>

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

       void exit_quiet_zone( );

LIBRARY
       Security Library - libsecurity.so

DESCRIPTION
       The enter_quiet_zone() function sets the appropriate signals to a state
       that  prevents keyboard interruption of program actions.	 If this func‐
       tion 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
       Security

							   enter_quiet_zone(3)
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