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git-svn-id: https://gnunet.org/svn/gnunet@8472 140774ce-b5e7-0310-ab8b-a85725594a96

1 files changed, 76 insertions, 0 deletions

diff --git a/src/util/signal.c b/src/util/signal.c
new file mode 100644
index 0000000000..478551ca28
--- /dev/null
+++ b/src/util/signal.c
@@ -0,0 +1,76 @@
+/*
+     This file is part of GNUnet.
+     (C) 2001, 2002, 2006 Christian Grothoff (and other contributing authors)
+
+     GNUnet 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.
+
+     GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file util/signal.c
+ * @brief code for installing and uninstalling signal handlers
+ * @author Christian Grothoff
+ */
+
+#include "platform.h"
+#include "gnunet_common.h"
+#include "gnunet_signal_lib.h"
+
+struct GNUNET_SIGNAL_Context
+{
+  int sig;
+
+  GNUNET_SIGNAL_Handler method;
+
+#ifndef MINGW
+  struct sigaction oldsig;
+#endif
+};
+
+struct GNUNET_SIGNAL_Context *
+GNUNET_SIGNAL_handler_install (int signal, GNUNET_SIGNAL_Handler handler)
+{
+  struct GNUNET_SIGNAL_Context *ret;
+#ifndef MINGW
+  struct sigaction sig;
+#endif
+
+  ret = GNUNET_malloc (sizeof (struct GNUNET_SIGNAL_Context));
+  ret->sig = signal;
+  ret->method = handler;
+#ifndef MINGW
+  sig.sa_handler = (void *) handler;
+  sigemptyset (&sig.sa_mask);
+#ifdef SA_INTERRUPT
+  sig.sa_flags = SA_INTERRUPT;  /* SunOS */
+#else
+  sig.sa_flags = SA_RESTART;
+#endif
+  sigaction (signal, &sig, &ret->oldsig);
+#endif
+  return ret;
+}
+
+void
+GNUNET_SIGNAL_handler_uninstall (struct GNUNET_SIGNAL_Context *ctx)
+{
+#ifndef MINGW
+  struct sigaction sig;
+
+  sigemptyset (&sig.sa_mask);
+  sigaction (ctx->sig, &ctx->oldsig, &sig);
+#endif
+  GNUNET_free (ctx);
+}