Adding upstream version 2.14.

Signed-off-by: Daniel Baumann <daniel@debian.org>

util/sighdl.c

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <signal.h>
+#include <errno.h>
+#include <stddef.h>
+
+#include "sighdl.h"
+
+bool nvme_sigint_received;
+
+static void nvme_sigint_handler(int signum)
+{
+	nvme_sigint_received = true;
+}
+
+int nvme_install_sigint_handler(void)
+{
+	struct sigaction act;
+
+	sigemptyset(&act.sa_mask);
+	act.sa_handler = nvme_sigint_handler;
+	act.sa_flags = 0;
+
+	nvme_sigint_received = false;
+	if (sigaction(SIGINT, &act, NULL) == -1)
+		return -errno;
+
+	return 0;
+}