| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include <lk/compiler.h> |
| #include <sys/types.h> |
| #include <uapi/mm.h> |
| |
| __BEGIN_CDECLS |
| |
| /** |
| * memref_create - create a handle to a region of your address space |
| * @addr: Where to start the region. Must be page aligned. |
| * @size: How many bytes to capture. Must be a multiple of page size. |
| * @mmap_prot: MMAP_FLAG_PROT_* attributes for the handle. Must be more |
| * restrictive than how the memory is mapped in your process. |
| * |
| * Creates a shareable, mappable handle to a region of your address space. |
| * Currently, this will only work on regions in the data segment, the heap, |
| * or which have been mapped in through mapping a memref. |
| * |
| * Return: Negative error code on error, otherwise the requested handle. |
| */ |
| int memref_create(void* addr, size_t size, uint32_t mmap_prot); |
| |
| __END_CDECLS |
