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// Copyright 2013 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_SANDBOX_BPF_POLICY_H_
#define SANDBOX_LINUX_SECCOMP_BPF_SANDBOX_BPF_POLICY_H_
#include "base/basictypes.h"
namespace sandbox {
class ErrorCode;
class SandboxBPF;
// This is the interface to implement to define a BPF sandbox policy.
class SandboxBPFPolicy {
public:
SandboxBPFPolicy() {}
virtual ~SandboxBPFPolicy() {}
// The EvaluateSyscall method is called with the system call number. It can
// decide to allow the system call unconditionally by returning ERR_ALLOWED;
// it can deny the system call unconditionally by returning an appropriate
// "errno" value; or it can request inspection of system call argument(s) by
// returning a suitable ErrorCode.
virtual ErrorCode EvaluateSyscall(SandboxBPF* sandbox_compiler,
int system_call_number) const = 0;
private:
DISALLOW_COPY_AND_ASSIGN(SandboxBPFPolicy);
};
} // namespace sandbox
#endif // SANDBOX_LINUX_SECCOMP_BPF_SANDBOX_BPF_POLICY_H_
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