initial import of NetBSD tree

1 files changed, 77 insertions, 0 deletions

diff --git a/usr.bin/window/wwchild.c b/usr.bin/window/wwchild.c
new file mode 100644
index 00000000000..0b1cfac43f6
--- /dev/null
+++ b/usr.bin/window/wwchild.c
@@ -0,0 +1,77 @@
+/*	$NetBSD: wwchild.c,v 1.3 1995/09/28 10:35:13 tls Exp $	*/
+
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Edward Wang at The University of California, Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)wwchild.c	8.1 (Berkeley) 6/6/93";
+#else
+static char rcsid[] = "$NetBSD: wwchild.c,v 1.3 1995/09/28 10:35:13 tls Exp $";
+#endif
+#endif /* not lint */
+
+#include "ww.h"
+#include <sys/types.h>
+#include <sys/wait.h>
+
+void
+wwchild()
+{
+	extern errno;
+	int olderrno;
+	register struct ww **wp;
+	union wait w;
+	int pid;
+	char collected = 0;
+
+	olderrno = errno;
+	while ((pid =
+	    wait3((int *)&w, WNOHANG|WUNTRACED, (struct rusage *)0)) > 0) {
+		for (wp = wwindex; wp < &wwindex[NWW]; wp++) {
+			if (*wp && (*wp)->ww_state == WWS_HASPROC
+			    && (*wp)->ww_pid == pid) {
+				(*wp)->ww_state = WWS_DEAD;
+				collected = 1;
+				break;
+			}
+		}
+	}
+	errno = olderrno;
+	/* jump out of wwiomux when somebody dies */
+	if (collected)
+		wwsetintr();
+}