From 1ab81c790c50821c970f4d6122b832bda62b49fb Mon Sep 17 00:00:00 2001
From: Virtually Nick <vnick@apache.org>
Date: Sun, 2 Jan 2022 23:41:18 -0500
Subject: [PATCH] GUACAMOLE-663: Set pthread stack size for guacd

---
 src/guacd/daemon.c   | 13 +++++++++++++
 src/guacd/proc-map.h |  5 +++++
 2 files changed, 18 insertions(+)

diff --git a/src/guacd/daemon.c b/src/guacd/daemon.c
index 8bf30351..66bed12b 100644
--- a/src/guacd/daemon.c
+++ b/src/guacd/daemon.c
@@ -17,6 +17,12 @@
  * under the License.
  */
 
+/**
+ * This is required for pthread_setattr_default_np() to be
+ * available and function correctly.
+ */
+#define _GNU_SOURCE 1
+
 #include "config.h"
 
 #include "conf.h"
@@ -35,6 +41,7 @@
 #include <libgen.h>
 #include <netdb.h>
 #include <netinet/in.h>
+#include <pthread.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -275,6 +282,12 @@ int main(int argc, char* argv[]) {
     /* General */
     int retval;
 
+    /* Set default stack size of 8MB */
+    pthread_attr_t default_pthread_attr;
+    pthread_attr_init(&default_pthread_attr);
+    pthread_attr_setstacksize(&default_pthread_attr, GUACD_THREAD_STACK_SIZE);
+    pthread_setattr_default_np(&default_pthread_attr);
+
     /* Load configuration */
     guacd_config* config = guacd_conf_load();
     if (config == NULL || guacd_conf_parse_args(config, argc, argv))
diff --git a/src/guacd/proc-map.h b/src/guacd/proc-map.h
index a2421885..6bb49c33 100644
--- a/src/guacd/proc-map.h
+++ b/src/guacd/proc-map.h
@@ -33,6 +33,11 @@
  */
 #define GUACD_CLIENT_MAX_CONNECTIONS 65536
 
+/**
+ * The pthread stack size for the guacd daemon.
+ */
+#define GUACD_THREAD_STACK_SIZE 8388608
+
 /**
  * The number of hash buckets in each process map.
  */