1 files changed, 51 insertions, 0 deletions
diff --git a/initd/signal_linux.c b/initd/signal_linux.c
new file mode 100644
index 0000000..aed049b
--- /dev/null
+++ b/initd/signal_linux.c
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * Copyright (C) 2018 - David Oberhollenzer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include <stdio.h>
+
+#include "init.h"
+
+int sigsetup(void)
+{
+	sigset_t mask;
+	int sfd;
+
+	sigfillset(&mask);
+	if (sigprocmask(SIG_SETMASK, &mask, NULL) == -1) {
+		perror("sigprocmask");
+		return -1;
+	}
+
+	sfd = signalfd(-1, &mask, SFD_CLOEXEC);
+	if (sfd == -1) {
+		perror("signalfd");
+		return -1;
+	}
+
+	if (reboot(LINUX_REBOOT_CMD_CAD_OFF))
+		perror("cannot disable CTRL+ALT+DEL");
+
+	return sfd;
+}
+
+void sigreset(void)
+{
+	sigset_t mask;
+
+	sigemptyset(&mask);
+	sigprocmask(SIG_SETMASK, &mask, NULL);
+}