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Unified Diff: sandbox/linux/seccomp-bpf/bpf_tester_compatibility_delegate.h

Issue 670183003: Update from chromium 62675d9fb31fb8cedc40f68e78e8445a74f362e7 (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 6 years, 2 months ago
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Index: sandbox/linux/seccomp-bpf/bpf_tester_compatibility_delegate.h
diff --git a/sandbox/linux/seccomp-bpf/bpf_tester_compatibility_delegate.h b/sandbox/linux/seccomp-bpf/bpf_tester_compatibility_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..edaa4bfa80fec30e67227165fba242494baab4e1
--- /dev/null
+++ b/sandbox/linux/seccomp-bpf/bpf_tester_compatibility_delegate.h
@@ -0,0 +1,55 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SANDBOX_LINUX_SECCOMP_BPF_BPF_TESTER_COMPATIBILITY_DELEGATE_H_
+#define SANDBOX_LINUX_SECCOMP_BPF_BPF_TESTER_COMPATIBILITY_DELEGATE_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "sandbox/linux/seccomp-bpf/sandbox_bpf_test_runner.h"
+
+namespace sandbox {
+
+// This templated class allows building a BPFTesterDelegate from a
+// deprecated-style BPF policy (that is a SyscallEvaluator function pointer,
+// instead of a SandboxBPFPolicy class), specified in |policy_function| and a
+// function pointer to a test in |test_function|.
+// This allows both the policy and the test function to take a pointer to an
+// object of type "Aux" as a parameter. This is used to implement the BPF_TEST
+// macro and should generally not be used directly.
+template <class Policy, class Aux>
+class BPFTesterCompatibilityDelegate : public BPFTesterDelegate {
+ public:
+ typedef void (*TestFunction)(Aux*);
+
+ explicit BPFTesterCompatibilityDelegate(TestFunction test_function)
+ : aux_(), test_function_(test_function) {}
+
+ virtual ~BPFTesterCompatibilityDelegate() {}
+
+ virtual scoped_ptr<bpf_dsl::SandboxBPFDSLPolicy> GetSandboxBPFPolicy()
+ override {
+ // The current method is guaranteed to only run in the child process
+ // running the test. In this process, the current object is guaranteed
+ // to live forever. So it's ok to pass aux_pointer_for_policy_ to
+ // the policy, which could in turn pass it to the kernel via Trap().
+ return scoped_ptr<bpf_dsl::SandboxBPFDSLPolicy>(new Policy(&aux_));
+ }
+
+ virtual void RunTestFunction() override {
+ // Run the actual test.
+ // The current object is guaranteed to live forever in the child process
+ // where this will run.
+ test_function_(&aux_);
+ }
+
+ private:
+ Aux aux_;
+ TestFunction test_function_;
+
+ DISALLOW_COPY_AND_ASSIGN(BPFTesterCompatibilityDelegate);
+};
+
+} // namespace sandbox
+
+#endif // SANDBOX_LINUX_SECCOMP_BPF_BPF_TESTER_COMPATIBILITY_DELEGATE_H_
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