diff options
| author | Andrew Scull | 2022-05-30 10:00:12 +0000 |
|---|---|---|
| committer | Tom Rini | 2022-06-23 12:58:19 -0400 |
| commit | 0518e7a28fdbaf27cda7a43d1a52d457536e1d9b (patch) | |
| tree | 2309dcfddb3c19b0cec341a504fceec6de487198 /drivers/fuzz | |
| parent | d9962b12f200156238a4c825c0b540a203c72042 (diff) | |
sandbox: Implement fuzzing engine driver
Add a fuzzing engine driver for the sandbox to take inputs from
libfuzzer and expose them to the fuzz tests.
Signed-off-by: Andrew Scull <ascull@google.com>
Diffstat (limited to 'drivers/fuzz')
| -rw-r--r-- | drivers/fuzz/Kconfig | 16 | ||||
| -rw-r--r-- | drivers/fuzz/Makefile | 1 | ||||
| -rw-r--r-- | drivers/fuzz/sandbox_fuzzing_engine.c | 35 |
3 files changed, 48 insertions, 4 deletions
diff --git a/drivers/fuzz/Kconfig b/drivers/fuzz/Kconfig index a03120f63ab..6311385222f 100644 --- a/drivers/fuzz/Kconfig +++ b/drivers/fuzz/Kconfig @@ -3,7 +3,15 @@ config DM_FUZZING_ENGINE depends on DM help Enable driver model for fuzzing engine devices. This interface is - used to get successive inputs from a fuzzing engine that aims to - explore different code paths in a fuzz test. The fuzzing engine may - be instrumenting the execution in order to more effectively generate - inputs that explore different code paths. + used to get fuzzing inputs from a fuzzing engine. + +if DM_FUZZING_ENGINE + +config FUZZING_ENGINE_SANDBOX + bool "Sanbox fuzzing engine" + depends on SANDBOX + default y + help + Enable fuzzing engine for sandbox. + +endif diff --git a/drivers/fuzz/Makefile b/drivers/fuzz/Makefile index acd894999c9..073743ba946 100644 --- a/drivers/fuzz/Makefile +++ b/drivers/fuzz/Makefile @@ -5,3 +5,4 @@ # obj-$(CONFIG_DM_FUZZING_ENGINE) += fuzzing_engine-uclass.o +obj-$(CONFIG_FUZZING_ENGINE_SANDBOX) += sandbox_fuzzing_engine.o diff --git a/drivers/fuzz/sandbox_fuzzing_engine.c b/drivers/fuzz/sandbox_fuzzing_engine.c new file mode 100644 index 00000000000..ebb938e5ba8 --- /dev/null +++ b/drivers/fuzz/sandbox_fuzzing_engine.c @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) 2022 Google, Inc. + * Written by Andrew Scull <ascull@google.com> + */ + +#include <common.h> +#include <dm.h> +#include <fuzzing_engine.h> +#include <asm/fuzzing_engine.h> + +static int get_input(struct udevice *dev, + const uint8_t **data, + size_t *size) +{ + return sandbox_fuzzing_engine_get_input(data, size); +} + +static const struct dm_fuzzing_engine_ops sandbox_fuzzing_engine_ops = { + .get_input = get_input, +}; + +static const struct udevice_id sandbox_fuzzing_engine_match[] = { + { + .compatible = "sandbox,fuzzing-engine", + }, + {}, +}; + +U_BOOT_DRIVER(sandbox_fuzzing_engine) = { + .name = "sandbox-fuzzing-engine", + .id = UCLASS_FUZZING_ENGINE, + .of_match = sandbox_fuzzing_engine_match, + .ops = &sandbox_fuzzing_engine_ops, +}; |