diff --git a/src/system/libroot/posix/signal/Jamfile b/src/system/libroot/posix/signal/Jamfile
index ff6916c2a7..562b81dff2 100644
--- a/src/system/libroot/posix/signal/Jamfile
+++ b/src/system/libroot/posix/signal/Jamfile
@@ -13,6 +13,7 @@ MergeObject posix_signal.o :
 	sigaltstack.c
 	sighold.cpp
 	sigignore.cpp
+	siginterrupt.cpp
 	signal.c
 	sigpause.cpp
 	sigpending.c
diff --git a/src/system/libroot/posix/signal/siginterrupt.cpp b/src/system/libroot/posix/signal/siginterrupt.cpp
new file mode 100644
index 0000000000..139208502f
--- /dev/null
+++ b/src/system/libroot/posix/signal/siginterrupt.cpp
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2009, Axel Dörfler, axeld@pinc-software.de. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include <signal.h>
+
+#include <syscalls.h>
+
+
+extern "C" int
+siginterrupt(int sig, int flag)
+{
+	struct sigaction action;
+
+	sigaction(sig, NULL, &action);
+	if (flag)
+		action.sa_flags &= ~SA_RESTART;
+	else
+		action.sa_flags |= SA_RESTART;
+
+	return sigaction(sig, &action, NULL);
+}
+