From 58bdb50ab30a32a544bddd312592409976700c17 Mon Sep 17 00:00:00 2001
From: Anh <zenpoems@gmail.com>
Date: Mon, 20 Aug 2018 14:15:26 +0000
Subject: [PATCH] Add comments
---
src/libzafl.cpp | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/libzafl.cpp b/src/libzafl.cpp
index 81ba777..d0ff01f 100644
--- a/src/libzafl.cpp
+++ b/src/libzafl.cpp
@@ -38,8 +38,8 @@ static int __afl_temp_data;
static pid_t __afl_fork_pid;
static auto debug = false;
-#define PRINT_ERROR(string) if (debug) {(void)(write(2, string, strlen(string)));}
-#define PRINT_DEBUG(string) if (debug) {(void)(write(1, string, strlen(string)));}
+#define PRINT_ERROR(string) if (debug) {auto x=write(2, string, strlen(string));}
+#define PRINT_DEBUG(string) if (debug) {auto x=write(1, string, strlen(string));}
static void zafl_setupSharedMemory();
static bool shared_memory_is_setup = false;
@@ -50,6 +50,8 @@ void __attribute__((constructor)) zafl_initAflForkServer();
void __attribute__((constructor)) zafl_setupSharedMemory();
#endif
+// always setup a trace map so that an instrumented applicatin will run
+// even if not running under AFL
static void zafl_setupSharedMemory()
{
if (getenv("ZAFL_DEBUG")) debug = true;
@@ -68,6 +70,7 @@ static void zafl_setupSharedMemory()
zafl_trace_map = (u8*)malloc(MAP_SIZE);
return;
}
+
shm_id = atoi(shm_env_var);
zafl_trace_map = (u8*)shmat(shm_id, NULL, 0);
if(zafl_trace_map == (u8*)-1) {
--
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