1 /*
2 * Copyright (C) 2017 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 "DebugCommand.h"
18
19 #include "Lshal.h"
20
21 #include <hidl-util/FQName.h>
22
23 namespace android {
24 namespace lshal {
25
getName() const26 std::string DebugCommand::getName() const {
27 return "debug";
28 }
29
getSimpleDescription() const30 std::string DebugCommand::getSimpleDescription() const {
31 return "Debug a specified HAL.";
32 }
33
parseArgs(const Arg & arg)34 Status DebugCommand::parseArgs(const Arg &arg) {
35 if (optind >= arg.argc) {
36 return USAGE;
37 }
38
39 // Optargs cannnot be used because the flag should not be considered set
40 // if it should really be contained in mOptions.
41 if (std::string(arg.argv[optind]) == "-E") {
42 mExcludesParentInstances = true;
43 optind++;
44 }
45
46 mInterfaceName = arg.argv[optind];
47 ++optind;
48 for (; optind < arg.argc; ++optind) {
49 mOptions.push_back(arg.argv[optind]);
50 }
51 return OK;
52 }
53
main(const Arg & arg)54 Status DebugCommand::main(const Arg &arg) {
55 Status status = parseArgs(arg);
56 if (status != OK) {
57 return status;
58 }
59
60 auto pair = splitFirst(mInterfaceName, '/');
61
62 FQName fqName(pair.first);
63 if (!fqName.isValid() || fqName.isIdentifier() || !fqName.isFullyQualified()) {
64 mLshal.err() << "Invalid fully-qualified name '" << pair.first << "'\n\n";
65 return USAGE;
66 }
67
68 return mLshal.emitDebugInfo(
69 pair.first, pair.second.empty() ? "default" : pair.second, mOptions,
70 mExcludesParentInstances,
71 mLshal.out().buf(),
72 mLshal.err());
73 }
74
usage() const75 void DebugCommand::usage() const {
76
77 static const std::string debug =
78 "debug:\n"
79 " lshal debug [-E] <interface> [options [options [...]]] \n"
80 " Print debug information of a specified interface.\n"
81 " -E: excludes debug output if HAL is actually a subclass.\n"
82 " <inteface>: Format is `android.hardware.foo@1.0::IFoo/default`.\n"
83 " If instance name is missing `default` is used.\n"
84 " options: space separated options to IBase::debug.\n";
85
86 mLshal.err() << debug;
87 }
88
89 } // namespace lshal
90 } // namespace android
91
92