20060303

1 files changed, 42 insertions, 0 deletions

diff --git a/utils/rcsh/trap.c b/utils/rcsh/trap.c
new file mode 100644
index 00000000..7bae2cbc
--- /dev/null
+++ b/utils/rcsh/trap.c
@@ -0,0 +1,42 @@
+#include "rc.h"
+
+int	interrupted;
+Ref	ntrap;
+
+/* runs in a different thread */
+void
+dointr(void)
+{
+	refinc(&ntrap);
+	interrupted = 1;
+}
+
+void
+dotrap(void)
+{
+	Var *trapreq;
+	Word *starval;
+
+	while(refdec(&ntrap) >= 0) {
+		if(flag['S'])
+			exits(truestatus()?"":getstatus());
+		starval=vlook("*")->val;
+		trapreq=vlook("sysint");
+		if(trapreq->fn){
+			start(trapreq->fn, trapreq->pc, (Var*)0);
+			runq->local=newvar(strdup("*"), runq->local);
+			runq->local->val=copywords(starval, (Word*)0);
+			runq->local->changed=1;
+			runq->redir=runq->startredir=0;
+		} else {
+			/*
+			 * run the stack down until we uncover the
+			 * command reading loop.  Xreturn will exit
+			 * if there is none (i.e. if this is not
+			 * an interactive rc.)
+			 */
+			while(!runq->iflag)
+				Xreturn();
+		}
+	}
+}