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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef SANDBOX_LINUX_SECCOMP_BPF_VERIFIER_H__ | 5 #ifndef SANDBOX_LINUX_SECCOMP_BPF_VERIFIER_H__ |
| 6 #define SANDBOX_LINUX_SECCOMP_BPF_VERIFIER_H__ | 6 #define SANDBOX_LINUX_SECCOMP_BPF_VERIFIER_H__ |
| 7 | 7 |
| 8 #include <stdint.h> | 8 #include <stdint.h> |
| 9 | 9 |
| 10 #include <vector> | 10 #include <vector> |
| 11 | 11 |
| 12 #include "base/macros.h" | 12 #include "base/macros.h" |
| 13 #include "sandbox/sandbox_export.h" | |
| 14 | 13 |
| 15 struct sock_filter; | 14 struct sock_filter; |
| 16 | 15 |
| 17 namespace sandbox { | 16 namespace sandbox { |
| 18 struct arch_seccomp_data; | 17 struct arch_seccomp_data; |
| 19 namespace bpf_dsl { | 18 namespace bpf_dsl { |
| 20 class Policy; | 19 class Policy; |
| 21 class PolicyCompiler; | 20 class PolicyCompiler; |
| 22 } | 21 } |
| 23 | 22 |
| 24 class SANDBOX_EXPORT Verifier { | 23 class Verifier { |
| 25 public: | 24 public: |
| 26 // Evaluate the BPF program for all possible inputs and verify that it | 25 // Evaluate the BPF program for all possible inputs and verify that it |
| 27 // computes the correct result. We use the "evaluators" to determine | 26 // computes the correct result. We use the "evaluators" to determine |
| 28 // the full set of possible inputs that we have to iterate over. | 27 // the full set of possible inputs that we have to iterate over. |
| 29 // Returns success, if the BPF filter accurately reflects the rules | 28 // Returns success, if the BPF filter accurately reflects the rules |
| 30 // set by the "evaluators". | 29 // set by the "evaluators". |
| 31 // Upon success, "err" is set to NULL. Upon failure, it contains a static | 30 // Upon success, "err" is set to NULL. Upon failure, it contains a static |
| 32 // error message that does not need to be free()'d. | 31 // error message that does not need to be free()'d. |
| 33 static bool VerifyBPF(bpf_dsl::PolicyCompiler* compiler, | 32 static bool VerifyBPF(bpf_dsl::PolicyCompiler* compiler, |
| 34 const std::vector<struct sock_filter>& program, | 33 const std::vector<struct sock_filter>& program, |
| (...skipping 12 matching lines...) Expand all Loading... |
| 47 const struct arch_seccomp_data& data, | 46 const struct arch_seccomp_data& data, |
| 48 const char** err); | 47 const char** err); |
| 49 | 48 |
| 50 private: | 49 private: |
| 51 DISALLOW_IMPLICIT_CONSTRUCTORS(Verifier); | 50 DISALLOW_IMPLICIT_CONSTRUCTORS(Verifier); |
| 52 }; | 51 }; |
| 53 | 52 |
| 54 } // namespace sandbox | 53 } // namespace sandbox |
| 55 | 54 |
| 56 #endif // SANDBOX_LINUX_SECCOMP_BPF_VERIFIER_H__ | 55 #endif // SANDBOX_LINUX_SECCOMP_BPF_VERIFIER_H__ |
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