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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "sandbox/policy/linux/bpf_cros_arm_gpu_policy_linux.h"
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#include "base/compiler_specific.h"
#include "build/build_config.h"
#include "sandbox/linux/bpf_dsl/bpf_dsl.h"
#include "sandbox/linux/seccomp-bpf-helpers/syscall_sets.h"
#include "sandbox/linux/system_headers/linux_syscalls.h"
#include "sandbox/policy/linux/bpf_base_policy_linux.h"
#include "sandbox/policy/linux/sandbox_seccomp_bpf_linux.h"
using sandbox::bpf_dsl::Allow;
using sandbox::bpf_dsl::Arg;
using sandbox::bpf_dsl::Error;
using sandbox::bpf_dsl::If;
using sandbox::bpf_dsl::ResultExpr;
namespace sandbox {
namespace policy {
CrosArmGpuProcessPolicy::CrosArmGpuProcessPolicy(bool allow_shmat)
#if defined(__arm__) || defined(__aarch64__)
: allow_shmat_(allow_shmat)
#endif
{
}
CrosArmGpuProcessPolicy::~CrosArmGpuProcessPolicy() {}
ResultExpr CrosArmGpuProcessPolicy::EvaluateSyscall(int sysno) const {
#if defined(__arm__) || defined(__aarch64__)
if (allow_shmat_ && sysno == __NR_shmat)
return Allow();
#endif // defined(__arm__) || defined(__aarch64__)
switch (sysno) {
#if defined(__arm__) || defined(__aarch64__)
// ARM GPU sandbox is started earlier so we need to allow networking
// in the sandbox.
case __NR_connect:
case __NR_getpeername:
case __NR_getsockname:
case __NR_sched_setaffinity:
case __NR_sched_setscheduler:
case __NR_sysinfo:
case __NR_uname:
return Allow();
// Allow only AF_UNIX for |domain|.
case __NR_socket:
case __NR_socketpair: {
const Arg<int> domain(0);
return If(domain == AF_UNIX, Allow()).Else(Error(EPERM));
}
#endif // defined(__arm__) || defined(__aarch64__)
default:
// Default to the generic GPU policy.
return GpuProcessPolicy::EvaluateSyscall(sysno);
}
}
} // namespace policy
} // namespace sandbox
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