ifdef for record
MODIFY
include/config.h
include/config.h
/* 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

MODIFY
src/afl-forkserver.c
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 =

MODIFY
src/afl-fuzz.c
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")) {

ifdef for record