1 // Copyright (C) 2018 The Android Open Source Project
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //      http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 // third_party/ashmem is Android shared memory. Instead of clone it here,
16 // use cutils/ashmem.h directly.
17 #include <cutils/ashmem.h>
18 
19 #ifdef __cplusplus
20 extern "C" {
21 #endif
22 
ashmem_get_prot_region(int fd)23 inline int ashmem_get_prot_region(int fd) {
24   int ret = ashmem_valid(fd);
25   if (ret < 0)
26     return ret;
27   return TEMP_FAILURE_RETRY(ioctl(fd, ASHMEM_GET_PROT_MASK));
28 }
29 
30 #ifdef __cplusplus
31 }
32 #endif
33