From 0e9b7f0cfd4aee527a79ac4c1f36c6f5f5c927b9 Mon Sep 17 00:00:00 2001
From: phantom10111 <phantom10111@gmail.com>
Date: Thu, 6 Feb 2014 21:38:50 +0100
Subject: [PATCH] Close all unneeded file descriptors before exec.

---
 jni/termExec.cpp | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/jni/termExec.cpp b/jni/termExec.cpp
index 0f9c79e..ccd6d87 100644
--- a/jni/termExec.cpp
+++ b/jni/termExec.cpp
@@ -43,6 +43,7 @@
 #include <unistd.h>
 #include <termios.h>
 #include <signal.h>
+#include <dirent.h>
 
 #include "termExec.h"
 
@@ -121,8 +122,6 @@ static int create_subprocess(const char *cmd,
     }
 
     if(pid == 0){
-        close(ptm);
-
         int pts;
 
         setsid();
@@ -134,6 +133,25 @@ static int create_subprocess(const char *cmd,
         dup2(pts, 1);
         dup2(pts, 2);
 
+        DIR *dir = opendir("/proc/self/fd");
+        if(dir != NULL) {
+            int badfd = dirfd(dir);
+
+            while(true) {
+                struct dirent *entry = readdir(dir);
+                if(entry == NULL) {
+                    break;
+                }
+
+                int fd = atoi(entry->d_name);
+                if(fd > 2 && fd != badfd) {
+                    close(fd);
+                }
+            }
+
+            closedir(dir);
+        }
+
         if (envp) {
             for (; *envp; ++envp) {
                 putenv(*envp);