ifdef for record

include/config.h

@@ -60,6 +60,15 @@
 
 /* Now non-cmplog configuration options */
 
+
+/* If a persistent target keeps state and found crashes are not reproducable
+   then enable this option and set the AFL_PERSISTENT_RECORD env variable
+   to a number. These number of testcases prior the crash will be kept and
+   also written to the crash/ directory */
+
+#define AFL_PERSISTENT_RECORD
+
+
 /* console output colors: There are three ways to configure its behavior
  * 1. default: colored outputs fixed on: defined USE_COLOR && defined
  * ALWAYS_COLORED The env var. AFL_NO_COLOR will have no effect

src/afl-forkserver.c

@@ -365,6 +365,7 @@ void afl_fsrv_start(afl_forkserver_t *fsrv, char **argv,
 
   if (!be_quiet) { ACTF("Spinning up the fork server..."); }
 
+#ifdef AFL_PERSISTENT_RECORD
   if (unlikely(fsrv->persistent_record)) {
 
     fsrv->persistent_record_data =
@@ -379,6 +380,7 @@ void afl_fsrv_start(afl_forkserver_t *fsrv, char **argv,
     }
 
   }
+#endif
 
   if (fsrv->use_fauxsrv) {
 
@@ -1014,6 +1016,7 @@ u32 afl_fsrv_get_mapsize(afl_forkserver_t *fsrv, char **argv,
 
 void afl_fsrv_write_to_testcase(afl_forkserver_t *fsrv, u8 *buf, size_t len) {
 
+#ifdef AFL_PERSISTENT_RECORD
   if (unlikely(fsrv->persistent_record)) {
 
     fsrv->persistent_record_len[fsrv->persistent_record_idx] = len;
@@ -1036,6 +1039,7 @@ void afl_fsrv_write_to_testcase(afl_forkserver_t *fsrv, u8 *buf, size_t len) {
     }
 
   }
+#endif
 
   if (likely(fsrv->use_shmem_fuzz && fsrv->shmem_fuzz)) {
 
@@ -1149,6 +1153,7 @@ fsrv_run_result_t afl_fsrv_run_target(afl_forkserver_t *fsrv, u32 timeout,
 
   }
 
+#ifdef AFL_PERSISTENT_RECORD
   // end of persistent loop?
   if (unlikely(fsrv->persistent_record &&
                fsrv->persistent_record_pid != fsrv->child_pid)) {
@@ -1165,6 +1170,7 @@ fsrv_run_result_t afl_fsrv_run_target(afl_forkserver_t *fsrv, u32 timeout,
     fsrv->persistent_record_len[idx] = val;
 
   }
+#endif
 
   if (fsrv->child_pid <= 0) {
 
@@ -1264,6 +1270,7 @@ fsrv_run_result_t afl_fsrv_run_target(afl_forkserver_t *fsrv, u32 timeout,
           (fsrv->uses_crash_exitcode &&
            WEXITSTATUS(fsrv->child_status) == fsrv->crash_exitcode))) {
 
+#ifdef AFL_PERSISTENT_RECORD
     if (unlikely(fsrv->persistent_record)) {
 
       char fn[PATH_MAX];
@@ -1293,6 +1300,7 @@ fsrv_run_result_t afl_fsrv_run_target(afl_forkserver_t *fsrv, u32 timeout,
       ++fsrv->persistent_record_cnt;
 
     }
+#endif
 
     /* For a proper crash, set last_kill_signal to WTERMSIG, else set it to 0 */
     fsrv->last_kill_signal =

src/afl-fuzz.c

@@ -218,7 +218,9 @@ static void usage(u8 *argv0, int more_help) {
       "AFL_PATH: path to AFL support binaries\n"
       "AFL_PYTHON_MODULE: mutate and trim inputs with the specified Python module\n"
       "AFL_QUIET: suppress forkserver status messages\n"
+#ifdef AFL_PERSISTENT_RECORD
       "AFL_PERSISTENT_RECORD: record the last X inputs to every crash in out/crashes\n"
+#endif
       "AFL_PRELOAD: LD_PRELOAD / DYLD_INSERT_LIBRARIES settings for target\n"
       "AFL_SHUFFLE_QUEUE: reorder the input queue randomly on startup\n"
       "AFL_SKIP_BIN_CHECK: skip the check, if the target is an executable\n"
@@ -249,7 +251,13 @@ static void usage(u8 *argv0, int more_help) {
   SAYF("Compiled with %s module support, see docs/custom_mutator.md\n",
        (char *)PYTHON_VERSION);
 #else
-  SAYF("Compiled without python module support\n");
+  SAYF("Compiled without python module support.\n");
+#endif
+
+#ifdef AFL_PERSISTENT_RECORD
+  SAYF("Compiled with AFL_PERSISTENT_RECORD support.\n");
+#else
+  SAYF("Compiled without AFL_PERSISTENT_RECORD support.\n");
 #endif
 
 #ifdef USEMMAP
@@ -259,27 +267,27 @@ static void usage(u8 *argv0, int more_help) {
 #endif
 
 #ifdef ASAN_BUILD
-  SAYF("Compiled with ASAN_BUILD\n\n");
+  SAYF("Compiled with ASAN_BUILD.\n");
 #endif
 
 #ifdef NO_SPLICING
-  SAYF("Compiled with NO_SPLICING\n\n");
+  SAYF("Compiled with NO_SPLICING.\n");
 #endif
 
 #ifdef PROFILING
-  SAYF("Compiled with PROFILING\n\n");
+  SAYF("Compiled with PROFILING.\n");
 #endif
 
 #ifdef INTROSPECTION
-  SAYF("Compiled with INTROSPECTION\n\n");
+  SAYF("Compiled with INTROSPECTION.\n");
 #endif
 
 #ifdef _DEBUG
-  SAYF("Compiled with _DEBUG\n\n");
+  SAYF("Compiled with _DEBUG.\n");
 #endif
 
 #ifdef _AFL_DOCUMENT_MUTATIONS
-  SAYF("Compiled with _AFL_DOCUMENT_MUTATIONS\n\n");
+  SAYF("Compiled with _AFL_DOCUMENT_MUTATIONS.\n");
 #endif
 
   SAYF("For additional help please consult %s/README.md :)\n\n", doc_path);
@@ -989,6 +997,8 @@ int main(int argc, char **argv_orig, char **envp) {
 
   if (unlikely(afl->afl_env.afl_persistent_record)) {
 
+#ifdef AFL_PERSISTENT_RECORD
+
     afl->fsrv.persistent_record = atoi(afl->afl_env.afl_persistent_record);
 
     if (afl->fsrv.persistent_record < 2) {
@@ -999,6 +1009,12 @@ int main(int argc, char **argv_orig, char **envp) {
 
     }
 
+#else
+
+    FATAL("afl-fuzz was not compiled with AFL_PERSISTENT_RECORD enabled in config.h!");
+
+#endif
+
   }
 
   if (afl->fsrv.qemu_mode && getenv("AFL_USE_QASAN")) {