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// Copyright 2013 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 "content/common/sandbox_linux/bpf_renderer_policy_linux.h"
#include <errno.h>
#include "base/basictypes.h"
#include "build/build_config.h"
#include "content/common/sandbox_linux/sandbox_linux.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/services/linux_syscalls.h"
using sandbox::SyscallSets;
using sandbox::bpf_dsl::Allow;
using sandbox::bpf_dsl::Error;
using sandbox::bpf_dsl::ResultExpr;
namespace content {
RendererProcessPolicy::RendererProcessPolicy() {}
RendererProcessPolicy::~RendererProcessPolicy() {}
ResultExpr RendererProcessPolicy::EvaluateSyscall(int sysno) const {
switch (sysno) {
// The baseline policy allows __NR_clock_gettime. Allow
// clock_getres() for V8. crbug.com/329053.
case __NR_clock_getres:
return sandbox::RestrictClockID();
case __NR_ioctl:
return sandbox::RestrictIoctl();
// Allow the system calls below.
case __NR_fdatasync:
case __NR_fsync:
#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
case __NR_getrlimit:
#endif
#if defined(__i386__) || defined(__arm__)
case __NR_ugetrlimit:
#endif
case __NR_mremap: // See crbug.com/149834.
case __NR_pread64:
case __NR_pwrite64:
case __NR_sched_get_priority_max:
case __NR_sched_get_priority_min:
case __NR_sysinfo:
case __NR_times:
case __NR_uname:
return Allow();
case __NR_sched_getaffinity:
case __NR_sched_getparam:
case __NR_sched_getscheduler:
case __NR_sched_setscheduler:
return sandbox::RestrictSchedTarget(GetPolicyPid(), sysno);
case __NR_prlimit64:
return Error(EPERM); // See crbug.com/160157.
default:
// Default on the content baseline policy.
return SandboxBPFBasePolicy::EvaluateSyscall(sysno);
}
}
} // namespace content
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