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Command: exit_quiet_zone | Section: 3 | Source: Digital UNIX | File: exit_quiet_zone.3.gz
enter_quiet_zone(3) Library Functions Manual enter_quiet_zone(3)
NAME
enter_quiet_zone, exit_quiet_zone - Prevent keyboard interruption of
program actions (Enhanced Security)
LIBRARY
Security Library - libsecurity.a and libsecurity.so
SYNOPSIS
#include <prot.h>
void enter_quiet_zone();
#include <prot.h>
void exit_quiet_zone();
DESCRIPTION
The function sets the appropriate signals to a state that prevents key-
board interruption of program actions. If this function is called mul-
tiple times without an intervening call, nothing is done. If an alarm
has been set, the time left to go is saved.
The 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.
RELATED INFORMATION
Security
delim off
enter_quiet_zone(3)