1 files changed, 63 insertions, 0 deletions
diff --git a/contrib/groff/src/utils/indxbib/signal.c b/contrib/groff/src/utils/indxbib/signal.c
new file mode 100644
index 000000000000..8078472f95db
--- /dev/null
+++ b/contrib/groff/src/utils/indxbib/signal.c
@@ -0,0 +1,63 @@
+/* Copyright (C) 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff 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 2, or (at your option) any later
+version.
+
+groff 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 groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+/* Unfortunately vendors seem to have problems writing a <signal.h>
+that is correct for C++, so we implement all signal handling in C. */
+
+#include <sys/types.h>
+#include <signal.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifndef RETSIGTYPE
+#define RETSIGTYPE void
+#endif
+
+extern void cleanup();
+
+static RETSIGTYPE handle_fatal_signal(signum)
+     int signum;
+{
+  signal(signum, SIG_DFL);
+  cleanup();
+  kill(getpid(), signum);
+}
+
+void catch_fatal_signals()
+{
+#ifdef SIGHUP
+  signal(SIGHUP, handle_fatal_signal);
+#endif
+  signal(SIGINT, handle_fatal_signal);
+  signal(SIGTERM, handle_fatal_signal);
+}
+
+#ifndef HAVE_RENAME
+
+void ignore_fatal_signals()
+{
+#ifdef SIGHUP
+  signal(SIGHUP, SIG_IGN);
+#endif
+  signal(SIGINT, SIG_IGN);
+  signal(SIGTERM, SIG_IGN);
+}
+
+#endif /* not HAVE_RENAME */