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[PATCH v3 10/16] scripts/oss-fuzz: Add wrapper program for generic fuzze
From: |
Alexander Bulekov |
Subject: |
[PATCH v3 10/16] scripts/oss-fuzz: Add wrapper program for generic fuzzer |
Date: |
Sun, 20 Sep 2020 22:25:00 -0400 |
On oss-fuzz we need some sort of wrapper to specify command-line
arguments or environment variables. When we had a similar problem with
other targets that I fixed with
05509c8e6d ("fuzz: select fuzz target using executable name")
by selecting the fuzz target based on the executable's name. In the
future should probably commit to one approach (wrapper binary or
argv0-based target selection).
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
---
scripts/oss-fuzz/target_template.c | 40 ++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 scripts/oss-fuzz/target_template.c
diff --git a/scripts/oss-fuzz/target_template.c
b/scripts/oss-fuzz/target_template.c
new file mode 100644
index 0000000000..4a7257412a
--- /dev/null
+++ b/scripts/oss-fuzz/target_template.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright Red Hat Inc., 2020
+ *
+ * Authors:
+ * Alexander Bulekov <alxndr@bu.edu>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <libgen.h>
+#include <string.h>
+#include <unistd.h>
+
+
+/* Required for oss-fuzz to consider the binary a target. */
+static const char *magic __attribute__((used)) = "LLVMFuzzerTestOneInput";
+static const char args[] = {QEMU_FUZZ_ARGS, 0x00};
+static const char objects[] = {QEMU_FUZZ_OBJECTS, 0x00};
+
+int main(int argc, char *argv[])
+{
+ char path[PATH_MAX] = {0};
+ char *dir = dirname(argv[0]);
+ strncpy(path, dir, PATH_MAX);
+ strcat(path, "/deps/qemu-fuzz-i386-target-general-fuzz");
+
+ setenv("QEMU_FUZZ_ARGS", args, 0);
+ setenv("QEMU_FUZZ_OBJECTS", objects, 0);
+
+ argv[0] = path;
+ int ret = execvp(path, argv);
+ if (ret) {
+ perror("execv");
+ }
+ return ret;
+}
--
2.28.0
- [PATCH v3 00/16] Add a General Virtual Device Fuzzer, Alexander Bulekov, 2020/09/20
- [PATCH v3 01/16] memory: Add FlatView foreach function, Alexander Bulekov, 2020/09/20
- [PATCH v3 03/16] fuzz: Add PCI features to the general fuzzer, Alexander Bulekov, 2020/09/20
- [PATCH v3 02/16] fuzz: Add general virtual-device fuzzer, Alexander Bulekov, 2020/09/20
- [PATCH v3 04/16] fuzz: Add DMA support to the generic-fuzzer, Alexander Bulekov, 2020/09/20
- [PATCH v3 06/16] fuzz: Add fuzzer callbacks to DMA-read functions, Alexander Bulekov, 2020/09/20
- [PATCH v3 05/16] fuzz: Declare DMA Read callback function, Alexander Bulekov, 2020/09/20
- [PATCH v3 08/16] fuzz: add a DISABLE_PCI op to general-fuzzer, Alexander Bulekov, 2020/09/20
- [PATCH v3 07/16] fuzz: Add support for custom crossover functions, Alexander Bulekov, 2020/09/20
- [PATCH v3 09/16] fuzz: add a crossover function to generic-fuzzer, Alexander Bulekov, 2020/09/20
- [PATCH v3 10/16] scripts/oss-fuzz: Add wrapper program for generic fuzzer,
Alexander Bulekov <=
- [PATCH v3 11/16] scripts/oss-fuzz: Add general-fuzzer build script, Alexander Bulekov, 2020/09/20
- [PATCH v3 13/16] scripts/oss-fuzz: build the general-fuzzer configs, Alexander Bulekov, 2020/09/20
- [PATCH v3 14/16] scripts/oss-fuzz: Add script to reorder a general-fuzzer trace, Alexander Bulekov, 2020/09/20
- [PATCH v3 15/16] scripts/oss-fuzz: Add crash trace minimization script, Alexander Bulekov, 2020/09/20
- [PATCH v3 12/16] scripts/oss-fuzz: Add general-fuzzer configs for oss-fuzz, Alexander Bulekov, 2020/09/20
- [PATCH v3 16/16] fuzz: Add instructions for using general-fuzz, Alexander Bulekov, 2020/09/20
- Re: [PATCH v3 00/16] Add a General Virtual Device Fuzzer, no-reply, 2020/09/20
- Re: [PATCH v3 00/16] Add a General Virtual Device Fuzzer, no-reply, 2020/09/20
- Re: [PATCH v3 00/16] Add a General Virtual Device Fuzzer, no-reply, 2020/09/20
- Re: [PATCH v3 00/16] Add a General Virtual Device Fuzzer, no-reply, 2020/09/20