Add SIGCHLD signal(3) handling to prevent zombie processes

2 files changed, 89 insertions, 0 deletions

diff --git a/net-p2p/dctc-gui/files/patch-src::main.c b/net-p2p/dctc-gui/files/patch-src::main.c
new file mode 100644
index 000000000000..f530ccac3963
--- /dev/null
+++ b/net-p2p/dctc-gui/files/patch-src::main.c
@@ -0,0 +1,36 @@
+--- src/main.c.orig	Mon Nov 18 23:53:50 2002
++++ src/main.c	Mon Nov 18 23:55:01 2002
+@@ -43,6 +43,9 @@
+ GtkWidget *done_popup=NULL;
+ GtkWidget *fav_popup=NULL;
+ 
++/* sigchld handling */
++extern void sig_chld(int);
++
+ /* this string is "$HOME/.dctc" */
+ GString *dctc_main_dir=NULL;
+ 
+@@ -289,11 +292,9 @@
+    sigset_t set;
+ 
+    /* ignore SIGPIPE */
+-	/* ignore SIGCHLD */
+ 	/* ignore SIGHUP */
+    sigemptyset(&set);
+    sigaddset(&set,SIGPIPE);
+-   sigaddset(&set,SIGCHLD);
+    sigaddset(&set,SIGHUP);
+    act.sa_handler=SIG_IGN;
+    act.sa_mask=set;
+@@ -301,8 +302,10 @@
+ 
+    sigprocmask(SIG_UNBLOCK,&set,NULL);
+ 	sigaction(SIGPIPE,&act,NULL);
+-	sigaction(SIGCHLD,&act,NULL);
+ 	sigaction(SIGHUP,&act,NULL);
++
++   /* handle SIGCHLD */
++   signal(SIGCHLD, sig_chld); /* Prevents zombies */
+ }
+ 
+ static void start_dctc_client_from_huburl(char *dchub_url,char *profile)
diff --git a/net-p2p/dctc-gui/files/sig_chld.c b/net-p2p/dctc-gui/files/sig_chld.c
new file mode 100644
index 000000000000..74b4a4afc53a
--- /dev/null
+++ b/net-p2p/dctc-gui/files/sig_chld.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2000, 2001, 2002
+ * Mario Sergio Fujikawa Ferreira <lioux@FreeBSD.org>
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD
+ */
+
+#include <sys/types.h>
+#include <sys/wait.h>
+/*
+#include <sys/time.h>
+#include <sys/resource.h>
+*/
+
+/* 
+ * SIGCHLD handler
+ * 
+ * Let's take care of our children.
+ * Otherwise, they may get involved with bad ppl
+ * and become zombies.
+ */
+void
+sig_chld(int signo)
+{
+	pid_t	pid;
+	int	stat;
+
+	while ( (pid = waitpid(-1, &stat, WNOHANG)) > 0);
+	
+	return;	
+}