blob: 002d061166e51d0ee13f9f7b18878d6caec1ad19 [file] [log] [blame]
Yabin Cui19bec5b2015-09-22 15:52:57 -07001/*
2 * Copyright (C) 2015 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 "sysdeps.h"
18#include "adb_trace.h"
19
20#include <string>
21#include <unordered_map>
22#include <vector>
23
Elliott Hughesf55ead92015-12-04 22:00:26 -080024#include <android-base/logging.h>
25#include <android-base/strings.h>
Yabin Cui19bec5b2015-09-22 15:52:57 -070026
27#include "adb.h"
28
29#if !ADB_HOST
Elliott Hughes8b249d22016-09-23 15:40:03 -070030#include <android-base/properties.h>
Yabin Cui19bec5b2015-09-22 15:52:57 -070031#endif
32
33#if !ADB_HOST
34const char* adb_device_banner = "device";
35static android::base::LogdLogger gLogdLogger;
36#else
37const char* adb_device_banner = "host";
38#endif
39
40void AdbLogger(android::base::LogId id, android::base::LogSeverity severity,
41 const char* tag, const char* file, unsigned int line,
42 const char* message) {
43 android::base::StderrLogger(id, severity, tag, file, line, message);
44#if !ADB_HOST
45 gLogdLogger(id, severity, tag, file, line, message);
46#endif
47}
48
49
50#if !ADB_HOST
51static std::string get_log_file_name() {
52 struct tm now;
53 time_t t;
54 tzset();
55 time(&t);
56 localtime_r(&t, &now);
57
58 char timestamp[PATH_MAX];
59 strftime(timestamp, sizeof(timestamp), "%Y-%m-%d-%H-%M-%S", &now);
60
61 return android::base::StringPrintf("/data/adb/adb-%s-%d", timestamp,
62 getpid());
63}
64
65void start_device_log(void) {
66 int fd = unix_open(get_log_file_name().c_str(),
67 O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, 0640);
68 if (fd == -1) {
69 return;
70 }
71
72 // Redirect stdout and stderr to the log file.
73 dup2(fd, STDOUT_FILENO);
74 dup2(fd, STDERR_FILENO);
75 fprintf(stderr, "--- adb starting (pid %d) ---\n", getpid());
76 unix_close(fd);
77}
78#endif
79
80int adb_trace_mask;
81
82std::string get_trace_setting_from_env() {
83 const char* setting = getenv("ADB_TRACE");
84 if (setting == nullptr) {
85 setting = "";
86 }
87
88 return std::string(setting);
89}
90
Yabin Cui19bec5b2015-09-22 15:52:57 -070091std::string get_trace_setting() {
92#if ADB_HOST
93 return get_trace_setting_from_env();
94#else
Elliott Hughes8b249d22016-09-23 15:40:03 -070095 return android::base::GetProperty("persist.adb.trace_mask", "");
Yabin Cui19bec5b2015-09-22 15:52:57 -070096#endif
97}
98
99// Split the space separated list of tags from the trace setting and build the
100// trace mask from it. note that '1' and 'all' are special cases to enable all
101// tracing.
102//
103// adb's trace setting comes from the ADB_TRACE environment variable, whereas
104// adbd's comes from the system property persist.adb.trace_mask.
105static void setup_trace_mask() {
106 const std::string trace_setting = get_trace_setting();
107 if (trace_setting.empty()) {
108 return;
109 }
110
111 std::unordered_map<std::string, int> trace_flags = {
112 {"1", 0},
113 {"all", 0},
114 {"adb", ADB},
115 {"sockets", SOCKETS},
116 {"packets", PACKETS},
117 {"rwx", RWX},
118 {"usb", USB},
119 {"sync", SYNC},
120 {"sysdeps", SYSDEPS},
121 {"transport", TRANSPORT},
122 {"jdwp", JDWP},
123 {"services", SERVICES},
124 {"auth", AUTH},
125 {"fdevent", FDEVENT},
126 {"shell", SHELL}};
127
128 std::vector<std::string> elements = android::base::Split(trace_setting, " ");
129 for (const auto& elem : elements) {
130 const auto& flag = trace_flags.find(elem);
131 if (flag == trace_flags.end()) {
132 LOG(ERROR) << "Unknown trace flag: " << elem;
133 continue;
134 }
135
136 if (flag->second == 0) {
137 // 0 is used for the special values "1" and "all" that enable all
138 // tracing.
139 adb_trace_mask = ~0;
140 return;
141 } else {
142 adb_trace_mask |= 1 << flag->second;
143 }
144 }
145}
146
147void adb_trace_init(char** argv) {
148#if !ADB_HOST
149 // Don't open log file if no tracing, since this will block
150 // the crypto unmount of /data
151 if (!get_trace_setting().empty()) {
David Pursell58805362015-10-28 14:29:51 -0700152 if (unix_isatty(STDOUT_FILENO) == 0) {
Yabin Cui19bec5b2015-09-22 15:52:57 -0700153 start_device_log();
154 }
155 }
156#endif
157
Elliott Hughes679285a2016-10-26 15:12:14 -0700158#if !defined(_WIN32)
159 // adb historically ignored $ANDROID_LOG_TAGS but passed it through to logcat.
160 // If set, move it out of the way so that libbase logging doesn't try to parse it.
161 std::string log_tags;
162 char* ANDROID_LOG_TAGS = getenv("ANDROID_LOG_TAGS");
163 if (ANDROID_LOG_TAGS) {
164 log_tags = ANDROID_LOG_TAGS;
165 unsetenv("ANDROID_LOG_TAGS");
166 }
167#endif
168
Spencer Low28bc2cb2015-11-07 18:51:54 -0800169 android::base::InitLogging(argv, &AdbLogger);
Elliott Hughes679285a2016-10-26 15:12:14 -0700170
171#if !defined(_WIN32)
172 // Put $ANDROID_LOG_TAGS back so we can pass it to logcat.
173 if (!log_tags.empty()) setenv("ANDROID_LOG_TAGS", log_tags.c_str(), 1);
174#endif
175
Yabin Cui19bec5b2015-09-22 15:52:57 -0700176 setup_trace_mask();
177
178 VLOG(ADB) << adb_version();
179}
180
181void adb_trace_enable(AdbTrace trace_tag) {
182 adb_trace_mask |= (1 << trace_tag);
183}