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// 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.
#include "sandbox/linux/seccomp-bpf/sandbox_bpf_test_runner.h"
#include <fcntl.h>
#include <linux/filter.h>
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "sandbox/linux/bpf_dsl/bpf_dsl.h"
#include "sandbox/linux/seccomp-bpf/die.h"
#include "sandbox/linux/seccomp-bpf/sandbox_bpf.h"
#include "sandbox/linux/tests/unit_tests.h"
namespace sandbox {
SandboxBPFTestRunner::SandboxBPFTestRunner(
BPFTesterDelegate* bpf_tester_delegate)
: bpf_tester_delegate_(bpf_tester_delegate) {
}
SandboxBPFTestRunner::~SandboxBPFTestRunner() {
}
void SandboxBPFTestRunner::Run() {
DCHECK(bpf_tester_delegate_);
sandbox::Die::EnableSimpleExit();
scoped_ptr<bpf_dsl::SandboxBPFDSLPolicy> policy =
bpf_tester_delegate_->GetSandboxBPFPolicy();
if (sandbox::SandboxBPF::SupportsSeccompSandbox(-1) ==
sandbox::SandboxBPF::STATUS_AVAILABLE) {
// Ensure the the sandbox is actually available at this time
int proc_fd;
SANDBOX_ASSERT((proc_fd = open("/proc", O_RDONLY | O_DIRECTORY)) >= 0);
SANDBOX_ASSERT(sandbox::SandboxBPF::SupportsSeccompSandbox(proc_fd) ==
sandbox::SandboxBPF::STATUS_AVAILABLE);
// Initialize and then start the sandbox with our custom policy
sandbox::SandboxBPF sandbox;
sandbox.set_proc_fd(proc_fd);
sandbox.SetSandboxPolicy(policy.release());
SANDBOX_ASSERT(
sandbox.StartSandbox(sandbox::SandboxBPF::PROCESS_SINGLE_THREADED));
// Run the actual test.
bpf_tester_delegate_->RunTestFunction();
} else {
printf("This BPF test is not fully running in this configuration!\n");
// Android and Valgrind are the only configurations where we accept not
// having kernel BPF support.
if (!IsAndroid() && !IsRunningOnValgrind()) {
const bool seccomp_bpf_is_supported = false;
SANDBOX_ASSERT(seccomp_bpf_is_supported);
}
// Call the compiler and verify the policy. That's the least we can do,
// if we don't have kernel support.
sandbox::SandboxBPF sandbox;
sandbox.SetSandboxPolicy(policy.release());
sandbox.AssembleFilter(true /* force_verification */);
sandbox::UnitTests::IgnoreThisTest();
}
}
bool SandboxBPFTestRunner::ShouldCheckForLeaks() const {
// LSAN requires being able to use ptrace() and other system calls that could
// be denied.
return false;
}
} // namespace sandbox
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