components/nacl/loader/nonsfi/nonsfi_sandbox.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_NACL_LOADER_NONSFI_NONSFI_SANDBOX_H_
   6 #define COMPONENTS_NACL_LOADER_NONSFI_NONSFI_SANDBOX_H_
   7
   8 #include "base/basictypes.h"
   9 #include "sandbox/linux/bpf_dsl/bpf_dsl_forward.h"
  10 #include "sandbox/linux/bpf_dsl/policy.h"
  11
  12 namespace nacl {
  13 namespace nonsfi {
  14
  15 // The seccomp sandbox policy for NaCl non-SFI mode. Note that this
  16 // policy must be as strong as possible, as non-SFI mode heavily
  17 // depends on seccomp sandbox.
  18 class NaClNonSfiBPFSandboxPolicy : public sandbox::bpf_dsl::Policy {
  19  public:
  20   explicit NaClNonSfiBPFSandboxPolicy() {}
  21   ~NaClNonSfiBPFSandboxPolicy() override {}
  22
  23   sandbox::bpf_dsl::ResultExpr EvaluateSyscall(int sysno) const override;
  24   sandbox::bpf_dsl::ResultExpr InvalidSyscall() const override;
  25
  26  private:
  27   DISALLOW_COPY_AND_ASSIGN(NaClNonSfiBPFSandboxPolicy);
  28 };
  29
  30 // Initializes seccomp-bpf sandbox for non-SFI NaCl. Returns false on
  31 // failure.
  32 bool InitializeBPFSandbox();
  33
  34 }  // namespace nonsfi
  35 }  // namespace nacl
  36
  37 #endif  // COMPONENTS_NACL_LOADER_NONSFI_NONSFI_SANDBOX_H_