1 /*
2 * Copyright 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <android-base/file.h>
18 #include <fuzzer/FuzzedDataProvider.h>
19
20 #include <iostream>
21
22 #include "PerformanceProfiler.h"
23 #include "ProcStatCollector.h"
24 #include "UidIoStatsCollector.h"
25
26 namespace android {
27 namespace automotive {
28 namespace watchdog {
29
30 using ::android::base::WriteStringToFile;
31
32 struct statsInfo {
33 std::string instr[13];
34 int len[13];
35 };
36
37 statsInfo info = {{"cpu", "procs_running", "procs_blocked", "cpu0", "cpu1", "cpu2", "cpu3", "intr",
38 "ctxt", "btime", "process", "procs_sleeping", "softirq"},
39 {10, 1, 1, 10, 10, 10, 10, 31, 1, 1, 1, 1, 11}};
40
LLVMFuzzerTestOneInput(const uint8_t * data,std::size_t size)41 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, std::size_t size) {
42 FuzzedDataProvider fdp(data, size);
43 std::string uidIoStatsSnapshot;
44 std::string procStatsSnapshot;
45
46 // Prepare for UidIoStatsCollector data
47 int count = 0;
48 while (fdp.remaining_bytes() > (size / 2)) {
49 uint64_t val = fdp.ConsumeIntegral<uint64_t>();
50 uidIoStatsSnapshot += (((count % 11) == 0 ? "" : " ") + std::to_string(val));
51 if (count > 0 && count % 11 == 10) {
52 uidIoStatsSnapshot += "\n";
53 }
54 count++;
55 }
56
57 // Prepare for ProcStats data
58 while (fdp.remaining_bytes() > 5) {
59 uint32_t choose = fdp.ConsumeIntegralInRange<uint32_t>(0, 3);
60 uint32_t idx = choose;
61 switch (choose) {
62 case 0:
63 case 1:
64 case 2:
65 break;
66 case 3:
67 idx = fdp.ConsumeIntegralInRange<uint32_t>(3, 12);
68 break;
69 default:
70 break;
71 }
72 procStatsSnapshot += info.instr[idx];
73 for (int i = 0; i < info.len[idx]; i++) {
74 uint64_t val = fdp.ConsumeIntegral<uint64_t>();
75 procStatsSnapshot += " " + std::to_string(val);
76 }
77 procStatsSnapshot += "\n";
78 }
79
80 if (uidIoStatsSnapshot.size() > 0 && procStatsSnapshot.size() > 0) {
81 // Test UidIoStatsCollector
82 TemporaryFile tf1;
83 WriteStringToFile(uidIoStatsSnapshot, tf1.path);
84 sp<UidIoStatsCollector> uidIoStatsCollector =
85 sp<UidIoStatsCollector>::make(tf1.path);
86 uidIoStatsCollector->collect();
87 // Test procStatCollector
88 TemporaryFile tf2;
89 WriteStringToFile(procStatsSnapshot, tf2.path);
90 sp<ProcStatCollector> procStatCollector =
91 sp<ProcStatCollector>::make(tf2.path);
92 procStatCollector->collect();
93 }
94 return 0;
95 }
96
97 } // namespace watchdog
98 } // namespace automotive
99 } // namespace android
100