chromium/sandbox/linux/syscall_broker/remote_syscall_arg_handler.cc

// 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.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "sandbox/linux/syscall_broker/remote_syscall_arg_handler.h"

#include <string.h>
#include <sys/ioctl.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>

#include <algorithm>

#include "base/bits.h"
#include "base/check_op.h"
#include "base/containers/span.h"
#include "base/logging.h"
#include "base/memory/page_size.h"
#include "sandbox/linux/system_headers/linux_seccomp.h"
#include "sandbox/linux/system_headers/linux_syscalls.h"

#if defined(MEMORY_SANITIZER)
#include <sanitizer/msan_interface.h>
#endif

namespace sandbox {
namespace syscall_broker {

RemoteProcessIOResult WriteRemoteData(pid_t pid,
                                      uintptr_t remote_addr,
                                      size_t remote_size,
                                      base::span<char> data) { … }

RemoteProcessIOResult ReadFilePathFromRemoteProcess(pid_t pid,
                                                    const void* remote_addr,
                                                    std::string* out_str) { … }

namespace internal {
uintptr_t NumBytesLeftInPage(uintptr_t addr) { … }
}  // namespace internal
}  // namespace syscall_broker
}  // namespace sandbox