1 /*
2 * Copyright (C) 2013 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 #define LOG_TAG "InputFlinger"
18
19
20 #include <stdint.h>
21 #include <unistd.h>
22
23 #include <sys/types.h>
24
25 #include "InputFlinger.h"
26 #include "InputDriver.h"
27
28 #include <binder/IPCThreadState.h>
29 #include <binder/PermissionCache.h>
30 #include <hardware/input.h>
31 #include <cutils/log.h>
32 #include <private/android_filesystem_config.h>
33
34 namespace android {
35
36 const String16 sAccessInputFlingerPermission("android.permission.ACCESS_INPUT_FLINGER");
37 const String16 sDumpPermission("android.permission.DUMP");
38
39
InputFlinger()40 InputFlinger::InputFlinger() :
41 BnInputFlinger() {
42 ALOGI("InputFlinger is starting");
43 mHost = new InputHost();
44 mHost->registerInputDriver(new InputDriver(INPUT_INSTANCE_EVDEV));
45 }
46
~InputFlinger()47 InputFlinger::~InputFlinger() {
48 }
49
dump(int fd,const Vector<String16> & args)50 status_t InputFlinger::dump(int fd, const Vector<String16>& args) {
51 String8 result;
52 const IPCThreadState* ipc = IPCThreadState::self();
53 const int pid = ipc->getCallingPid();
54 const int uid = ipc->getCallingUid();
55 if ((uid != AID_SHELL)
56 && !PermissionCache::checkPermission(sDumpPermission, pid, uid)) {
57 result.appendFormat("Permission Denial: "
58 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", pid, uid);
59 } else {
60 dumpInternal(result);
61 }
62 write(fd, result.string(), result.size());
63 return OK;
64 }
65
dumpInternal(String8 & result)66 void InputFlinger::dumpInternal(String8& result) {
67 result.append("INPUT FLINGER (dumpsys inputflinger)\n");
68 mHost->dump(result);
69 }
70
71 }; // namespace android
72