1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * SPDX-License-Identifier: GPL-2.0
4 *
5 * Unless required by applicable law or agreed to in writing, software
6 * distributed under the License is distributed on an "AS IS" BASIS,
7 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
8 * See the License for the specific language governing permissions and
9 * limitations under the License.
10 */
11
12 #include <cstdio>
13 #include <cstdint>
14 #include <unistd.h>
15 #include <fcntl.h>
16
17 namespace OHOS {
ForceShrinkAnonFuzzer(const uint8_t * data,size_t size)18 bool ForceShrinkAnonFuzzer(const uint8_t *data, size_t size)
19 {
20 const char *forceShrinkAnon = "/dev/memcg/memory.force_shrink_anon";
21 int fd = open(forceShrinkAnon, O_RDWR);
22 if (fd < 0) {
23 return false;
24 }
25
26 int ret = write(fd, data, size);
27 if (ret < 0) {
28 printf("%s write fail\n", forceShrinkAnon);
29 close(fd);
30 return false;
31 }
32
33 close(fd);
34 return true;
35 }
36 } // namespace OHOS
37
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)38 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
39 {
40 OHOS::ForceShrinkAnonFuzzer(data, size);
41 return 0;
42 }
43