IActivityManager.cpp revision ec9ec7d55c63f791ab3ed9221e68d6215f7b928a 
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#include <unistd.h>
18#include <fcntl.h>
19
20#include <binder/IActivityManager.h>
21
22#include <binder/Parcel.h>
23
24namespace android {
25
26// ------------------------------------------------------------------------------------
27
28class BpActivityManager : public BpInterface<IActivityManager>
29{
30public:
31    explicit BpActivityManager(const sp<IBinder>& impl)
32        : BpInterface<IActivityManager>(impl)
33    {
34    }
35
36    virtual int openContentUri(const String16& stringUri)
37    {
38        Parcel data, reply;
39        data.writeString16(stringUri);
40        status_t ret = remote()->transact(OPEN_CONTENT_URI_TRANSACTION, data, & reply);
41        int fd = -1;
42        if (ret == NO_ERROR) {
43            int32_t exceptionCode = reply.readExceptionCode();
44            if (!exceptionCode) {
45                // Success is indicated here by a nonzero int followed by the fd;
46                // failure by a zero int with no data following.
47                if (reply.readInt32() != 0) {
48                    fd = fcntl(reply.readParcelFileDescriptor(), F_DUPFD_CLOEXEC, 0);
49                }
50            } else {
51                // An exception was thrown back; fall through to return failure
52                ALOGD("openContentUri(%s) caught exception %d\n",
53                        String8(stringUri).string(), exceptionCode);
54            }
55        }
56        return fd;
57    }
58};
59
60// ------------------------------------------------------------------------------------
61
62IMPLEMENT_META_INTERFACE(ActivityManager, "android.app.IActivityManager");
63
64}; // namespace android
65