1 /*
2 * Copyright (C) 2016 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 #ifndef ANDROID_HARDWARE_ISERVICE_MANAGER_H
18 #define ANDROID_HARDWARE_ISERVICE_MANAGER_H
19
20 #include <string>
21 #include <vector>
22
23 #include <android/hidl/base/1.0/IBase.h>
24 #include <utils/StrongPointer.h>
25
26 namespace android {
27
28 namespace hidl {
29 namespace manager {
30 namespace V1_0 {
31 struct IServiceManager;
32 } // namespace V1_0
33 namespace V1_1 {
34 struct IServiceManager;
35 } // namespace V1_1
36 namespace V1_2 {
37 struct IServiceManager;
38 } // namespace V1_2
39 } // namespace manager
40 } // namespace hidl
41
42 namespace hardware {
43
44 namespace details {
45
46 // Will not attempt to start a lazy HAL
47 // e.x.: android.hardware.foo@1.0::IFoo, default
48 void waitForHwService(const std::string &interface, const std::string &instanceName);
49
50 // Only works on userdebug/eng builds. This allows getService to bypass the
51 // VINTF manifest for testing only.
52 void setTrebleTestingOverride(bool testingOverride);
53
54 void preloadPassthroughService(const std::string &descriptor);
55
56 // Returns a service with the following constraints:
57 // - retry => service is waited for and returned if it is declared in the
58 // manifest AND it is available in this process (if errors indicate an
59 // sepolicy denial, then this will return - TODO(b/28321379) more precise
60 // errors to handle more cases)
61 // - getStub => internal only. Forces to get the unwrapped (no BsFoo) if available.
62 // TODO(b/65843592)
63 // If the service is a remote service, this function returns BpBase. If the service is
64 // a passthrough service, this function returns the appropriately wrapped Bs child object.
65 sp<::android::hidl::base::V1_0::IBase> getRawServiceInternal(const std::string& descriptor,
66 const std::string& instance,
67 bool retry, bool getStub);
68
69 status_t registerAsServiceInternal(const sp<::android::hidl::base::V1_0::IBase>& service,
70 const std::string& name);
71 } // namespace details
72
73 // These functions are for internal use by hidl. If you want to get ahold
74 // of an interface, the best way to do this is by calling IFoo::getService()
75 sp<::android::hidl::manager::V1_0::IServiceManager> defaultServiceManager();
76 sp<::android::hidl::manager::V1_1::IServiceManager> defaultServiceManager1_1();
77 sp<::android::hidl::manager::V1_2::IServiceManager> defaultServiceManager1_2();
78 sp<::android::hidl::manager::V1_0::IServiceManager> getPassthroughServiceManager();
79 sp<::android::hidl::manager::V1_1::IServiceManager> getPassthroughServiceManager1_1();
80
81 /**
82 * Given a descriptor (e.g. from IFoo::descriptor), return a list of all instance names
83 * on a device (e.g. the VINTF manifest). These HALs may not be currently running, but
84 * the expectation is that if they aren't running, they should start as lazy HALs.
85 * So, getService should return for each of these instance names.
86 */
87 std::vector<std::string> getAllHalInstanceNames(const std::string& descriptor);
88
89 /**
90 * Given a service that is in passthrough mode, this function will go ahead and load the
91 * required passthrough module library (but not call HIDL_FETCH_I* functions to instantiate it).
92 *
93 * E.x.: preloadPassthroughService<IFoo>();
94 */
95 template<typename I>
preloadPassthroughService()96 static inline void preloadPassthroughService() {
97 details::preloadPassthroughService(I::descriptor);
98 }
99
100 } // namespace hardware
101 } // namespace android
102
103 #endif // ANDROID_HARDWARE_ISERVICE_MANAGER_H
104
105