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// Copyright 2020 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_service_policy_linux.h"
#include <errno.h>
#include "build/build_config.h"
#include "sandbox/linux/bpf_dsl/bpf_dsl.h"
#include "sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.h"
#include "sandbox/linux/seccomp-bpf-helpers/syscall_sets.h"
#include "sandbox/linux/system_headers/linux_syscalls.h"
#include "sandbox/policy/linux/sandbox_linux.h"
using sandbox::bpf_dsl::Allow;
using sandbox::bpf_dsl::Error;
using sandbox::bpf_dsl::ResultExpr;
namespace sandbox {
namespace policy {
ResultExpr ServiceProcessPolicy::EvaluateSyscall(int sysno) const {
switch (sysno) {
case __NR_ioctl:
return RestrictIoctl();
// Allow the system calls below.
#if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
defined(__aarch64__)
case __NR_getrlimit:
#endif
#if defined(__i386__) || defined(__arm__)
case __NR_ugetrlimit:
#endif
case __NR_mremap: // https://crbug.com/546204
case __NR_pwrite64:
case __NR_times:
return Allow();
default:
// Default on the content baseline policy.
return BPFBasePolicy::EvaluateSyscall(sysno);
}
}
} // namespace policy
} // namespace sandbox
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