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 <alx...@bu.edu>
Reviewed-by: Darren Kenny <darren.ke...@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 <alx...@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
