1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <signal.h>
#include <gflags/gflags.h>
#include <android-base/logging.h>
#include "common/libs/fs/shared_buf.h"
#include "common/libs/fs/shared_fd.h"
#include "host/libs/config/cuttlefish_config.h"
#include "host/libs/config/logging.h"
DEFINE_int32(log_pipe_fd, -1,
"A file descriptor representing a (UNIX) socket from which to "
"read the logs. If -1 is given the socket is created according to "
"the instance configuration");
int main(int argc, char** argv) {
cuttlefish::DefaultSubprocessLogging(argv);
google::ParseCommandLineFlags(&argc, &argv, true);
auto config = cuttlefish::CuttlefishConfig::Get();
CHECK(config) << "Could not open cuttlefish config";
auto instance = config->ForDefaultInstance();
// Disable default handling of SIGPIPE
struct sigaction new_action {
}, old_action{};
new_action.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &new_action, &old_action);
cuttlefish::SharedFD pipe;
if (FLAGS_log_pipe_fd < 0) {
auto log_name = instance.logcat_pipe_name();
pipe = cuttlefish::SharedFD::Open(log_name.c_str(), O_RDONLY);
} else {
pipe = cuttlefish::SharedFD::Dup(FLAGS_log_pipe_fd);
close(FLAGS_log_pipe_fd);
}
if (!pipe->IsOpen()) {
LOG(ERROR) << "Error opening log pipe: " << pipe->StrError();
return 2;
}
auto path = instance.logcat_path();
auto logcat_file =
cuttlefish::SharedFD::Open(path.c_str(), O_CREAT | O_APPEND | O_WRONLY, 0666);
// Server loop
while (true) {
char buff[1024];
auto read = pipe->Read(buff, sizeof(buff));
if (read < 0) {
LOG(ERROR) << "Could not read logcat: " << pipe->StrError();
break;
}
auto written = cuttlefish::WriteAll(logcat_file, buff, read);
CHECK(written == read) << "Error writing to log file: "
<< logcat_file->StrError()
<< ". This is unrecoverable.";
}
logcat_file->Close();
pipe->Close();
return 0;
}
|
