1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * SPDX-License-Identifier: GPL-2.0
4 *
5 * Legacy blkg rwstat helpers enabled by CONFIG_BLK_CGROUP_RWSTAT.
6 * Do not use in new code.
7 *
8 * Unless required by applicable law or agreed to in writing, software
9 * distributed under the License is distributed on an "AS IS" BASIS,
10 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 * See the License for the specific language governing permissions and
12 * limitations under the License.
13 */
14
15 #include <cstddef>
16 #include <fcntl.h>
17 #include <unistd.h>
18 #include <cstdint>
19 #include <cstdlib>
20 #include "hccommon.h"
21
22 namespace OHOS {
HcFuzzTest(const uint8_t * data,const char * pathname,size_t size)23 bool HcFuzzTest(const uint8_t *data, const char *pathname, size_t size)
24 {
25 uint32_t value = 0;
26 uint32_t length = size > sizeof(uint32_t) ? sizeof(uint32_t) : size;
27 int ret = access("/mnt/f2fs_mount/", F_OK);
28 if (ret < 0) {
29 system("mkdir -p /mnt/f2fs_mount/");
30 system("mkfs.f2fs -d1 -t1 -O quota /data/image_f2fs");
31 system("losetup /dev/block/loop1 /data/image_f2fs");
32 system("mount -t f2fs /dev/block/loop1 /mnt/f2fs_mount/");
33 }
34
35 int fd = open(pathname, O_RDWR);
36 if (fd < 0) {
37 return false;
38 }
39
40 ret = read(fd, &value, sizeof(value));
41 if (ret < 0) {
42 close(fd);
43 return false;
44 }
45
46 ret = write(fd, data, length);
47 if (ret < 0) {
48 close(fd);
49 return false;
50 }
51 close(fd);
52 return true;
53 }
54 }