siginterrupt() -- allow signals to interrupt system calls

SYNOPSIS

#include <signal.h>

int siginterrupt(int sig, int flag);

DESCRIPTION

The siginterrupt() function is used to change the restart behavior when a function is interrupted by the specified signal. The call siginterrupt(sig, flag) has an affect as if implemented as:

int siginterrupt(int sig, int flag) {
	struct sigaction act;
	(void)sigaction(sig, NULL, &act);
	if (flag)
		act.sa_flags &= ~SA_RESTART;
	else
		act.sa_flags |= SA_RESTART;
	return
	sigaction(sig, &act, NULL);
}

PARAMETERS

sig: Is the signal number for which the restart state is to be modified.
flag: Determines whether sig interrupts system calls. If true, sig does interrupt. Otherwise, system calls are restarted when possible.