From c897e941ca645ab1e2aa325e5feaae30cc43060e Mon Sep 17 00:00:00 2001
From: Sunzen Wang <sunzen@gmail.com>
Date: Tue, 19 May 2009 09:11:01 +0800
Subject: [PATCH] Enhance -x option checking to only accept valid pid

Fix: Enhance -x option checking to only accept valid pid
---
 main.cxx | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/main.cxx b/main.cxx
index ec5506f56..1f4f9812d 100644
--- a/main.cxx
+++ b/main.cxx
@@ -639,7 +639,12 @@ main (int argc, char * const argv [])
 	  break;
 
 	case 'x':
-	  s.target_pid = atoi(optarg);
+	  s.target_pid = (int) strtoul(optarg, &num_endptr, 10);
+	  if (*num_endptr != '\0')
+	    {
+	      cerr << "Invalid target process ID number." << endl;
+	      usage (s, 1);
+	    }
 	  break;
 
 	case 'D':
-- 
2.43.5