Virgin import of ntpd 4.0.98fvendor/ntp/4.0.98f

1 files changed, 123 insertions, 0 deletions

diff --git a/contrib/ntp/libntp/syssignal.c b/contrib/ntp/libntp/syssignal.c
new file mode 100644
index 000000000000..50c65b7c3d11
--- /dev/null
+++ b/contrib/ntp/libntp/syssignal.c
@@ -0,0 +1,123 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <signal.h>
+
+#include "ntp_syslog.h"
+#include "ntp_stdlib.h"
+
+#ifdef HAVE_SIGACTION
+
+void
+signal_no_reset(
+#if defined(__STDC__) || defined(HAVE_STDARG_H)
+	int sig,
+	void (*func) (int)
+#else
+	sig, func
+#endif
+	)
+#if defined(__STDC__) || defined(HAVE_STDARG_H)
+#else
+	 int sig;
+	 void (*func) P((int));
+#endif
+{
+	int n;
+	struct sigaction vec;
+
+	vec.sa_handler = func;
+	sigemptyset(&vec.sa_mask);
+#if 0
+#ifdef SA_RESTART
+	vec.sa_flags = SA_RESTART;
+#else
+	vec.sa_flags = 0;
+#endif
+#else
+	vec.sa_flags = 0;
+#endif
+
+	while (1)
+	{
+		struct sigaction ovec;
+
+		n = sigaction(sig, &vec, &ovec);
+		if (n == -1 && errno == EINTR) continue;
+		if (ovec.sa_flags
+#ifdef	SA_RESTART
+		    && ovec.sa_flags != SA_RESTART
+#endif
+		    )
+			msyslog(LOG_DEBUG, "signal_no_reset: signal %d had flags %x",
+				sig, ovec.sa_flags);
+		break;
+	}
+	if (n == -1) {
+		perror("sigaction");
+		exit(1);
+	}
+}
+
+#elif  HAVE_SIGVEC
+
+void
+signal_no_reset(
+	int sig,
+	RETSIGTYPE (*func) (int)
+	)
+{
+	struct sigvec sv;
+	int n;
+
+	bzero((char *) &sv, sizeof(sv));
+	sv.sv_handler = func;
+	n = sigvec(sig, &sv, (struct sigvec *)NULL);
+	if (n == -1) {
+		perror("sigvec");
+		exit(1);
+	}
+}
+
+#elif  HAVE_SIGSET
+
+void
+signal_no_reset(
+	int sig,
+	RETSIGTYPE (*func) (int)
+	)
+{
+	int n;
+
+	n = sigset(sig, func);
+	if (n == -1) {
+		perror("sigset");
+		exit(1);
+	}
+}
+
+#else
+
+/* Beware!	This implementation resets the signal to SIG_DFL */
+void
+signal_no_reset(
+	int sig,
+	RETSIGTYPE (*func) (int)
+	)
+{
+#ifdef SIG_ERR
+	if (SIG_ERR == signal(sig, func)) {
+#else
+	int n;
+	n = signal(sig, func);
+	if (n == -1) {
+#endif
+		perror("signal");
+		exit(1);
+	}
+}
+
+#endif