diff options
Diffstat (limited to 'fuzz/fs_server_fuzzer.rs')
-rw-r--r-- | fuzz/fs_server_fuzzer.rs | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/fuzz/fs_server_fuzzer.rs b/fuzz/fs_server_fuzzer.rs new file mode 100644 index 0000000..c824a0a --- /dev/null +++ b/fuzz/fs_server_fuzzer.rs @@ -0,0 +1,48 @@ +// Copyright 2019 The Chromium OS Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#![no_main] + +use std::convert::TryInto; + +use cros_fuzz::fuzz_target; +use devices::virtio::fs::fuzzing::fuzz_server; +use devices::virtio::{create_descriptor_chain, DescriptorType, Reader, Writer}; +use sys_util::{GuestAddress, GuestMemory}; + +const MEM_SIZE: u64 = 256 * 1024 * 1024; +const BUFFER_ADDR: GuestAddress = GuestAddress(0x100); + +thread_local! { + static GUEST_MEM: GuestMemory = GuestMemory::new(&[(GuestAddress(0), MEM_SIZE)]).unwrap(); +} + +fuzz_target!(|data| { + use DescriptorType::*; + + GUEST_MEM.with(|mem| { + mem.write_all_at_addr(data, BUFFER_ADDR).unwrap(); + + let chain = create_descriptor_chain( + mem, + GuestAddress(0), + BUFFER_ADDR, + vec![ + (Readable, data.len().try_into().unwrap()), + ( + Writable, + (MEM_SIZE as u32) + .saturating_sub(data.len().try_into().unwrap()) + .saturating_sub(0x100), + ), + ], + 0, + ) + .unwrap(); + + let r = Reader::new(mem, chain.clone()).unwrap(); + let w = Writer::new(mem, chain).unwrap(); + fuzz_server(r, w); + }); +}); |