1 files changed, 81 insertions, 0 deletions
diff --git a/include/sigdefs.h b/include/sigdefs.h
new file mode 100644
index 0000000..8e8ba7e
--- /dev/null
+++ b/include/sigdefs.h
@@ -0,0 +1,81 @@
+/*
+ * This file has been modified for the cdrkit suite.
+ *
+ * The behaviour and appearence of the program code below can differ to a major
+ * extent from the version distributed by the original author(s).
+ *
+ * For details, see Changelog file distributed with the cdrkit package. If you
+ * received this file from another source then ask the distributing person for
+ * a log of modifications.
+ *
+ */
+
+/* @(#)sigdefs.h	1.5 02/01/19 Copyright 1997 J. Schilling */
+/*
+ *	Signal abstraction for BSD/SVR4 signals
+ *
+ *	Copyright (c) 1997 J. Schilling
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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; see the file COPYING.  If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef	_SIGDEFS_H
+#define	_SIGDEFS_H
+
+#ifndef _MCONFIG_H
+#include <mconfig.h>
+#endif
+
+#ifdef	HAVE_SIGSET
+/*
+ * Try to by default use the function that sets up signal handlers in a way
+ * that does not reset the handler after it has been called.
+ */
+#define	signal		sigset
+#endif
+
+#ifdef	HAVE_SIGPROCMASK
+#define	block_sigs(a)	{ \
+				sigset_t	__new;	\
+							\
+				sigfillset(&__new);	\
+				sigprocmask(SIG_BLOCK, &__new, &a);\
+			}
+#define	unblock_sig(s)	{ \
+				sigset_t	__new;	\
+							\
+				sigemptyset(&__new);	\
+				sigaddset(&__new, (s));	\
+				sigprocmask(SIG_UNBLOCK, &__new, NULL);\
+			}
+#define	restore_sigs(a)	sigprocmask(SIG_SETMASK, &a, 0);
+
+#else	/* !HAVE_SIGPROCMASK */
+
+#define	sigset_t	int
+#define	block_sigs(a)	a = sigblock(0xFFFFFFFF)
+#define	restore_sigs(a)	sigsetmask(a);
+#define	unblock_sig(s)	{ \
+				int	__old, __new;	\
+							\
+				block_sigs(__old);	\
+				__new = sigmask(s);	\
+				__new = __old & ~__new;	\
+				sigsetmask(__new);	\
+			}
+
+#endif	/* HAVE_SIGPROCMASK */
+
+#endif	/* _SIGDEFS_H */