1 files changed, 20 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_signed_loader_data.c b/tools/testing/selftests/bpf/progs/test_signed_loader_data.c
new file mode 100644
index 000000000000..43e2074d0042
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_signed_loader_data.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+
+/*
+ * A single initialized global, so the generated loader has one internal
+ * (.data) map that it seeds with an initial value while loading.
+ * prog_tests/signed_loader.c uses this to check that a signed loader
+ * keeps the attested contents and ignores a ctx-supplied initial_value:
+ * the host cannot re-seed a signed program's maps through the loader ctx.
+ */
+__u64 magic = 0x5eed1234abad1deaULL;
+
+SEC("socket")
+int probe(void *ctx)
+{
+	return (int)magic;
+}
+
+char _license[] SEC("license") = "GPL";