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Add several warnings when starting forkserver (#1877)

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Dongjia "toka" Zhang 2024-02-22 14:58:51 +01:00 committed by GitHub
parent b97598d239
commit 19f5081bd8
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1 changed files with 9 additions and 0 deletions
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9
libafl/src/executors/forkserver.rs
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@ -7,6 +7,7 @@ use core::{
time::Duration, time::Duration,
}; };
use std::{ use std::{
env,
ffi::{OsStr, OsString}, ffi::{OsStr, OsString},
io::{self, prelude::*, ErrorKind}, io::{self, prelude::*, ErrorKind},
os::{ os::{
@ -290,6 +291,14 @@ impl Forkserver {
debug_output: bool, debug_output: bool,
kill_signal: Signal, kill_signal: Signal,
) -> Result<Self, Error> { ) -> Result<Self, Error> {
if env::var("AFL_MAP_SIZE").is_err() {
log::warn!("AFL_MAP_SIZE not set. If it is unset, the forkserver may fail to start up");
}
if env::var("__AFL_SHM_ID").is_err() {
log::warn!("__AFL_SHM_ID not set. It is necessary to set this env, otherwise the forkserver cannot communicate with the fuzzer");
}
let mut st_pipe = Pipe::new().unwrap(); let mut st_pipe = Pipe::new().unwrap();
let mut ctl_pipe = Pipe::new().unwrap(); let mut ctl_pipe = Pipe::new().unwrap();