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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* log_process.cpp - Logging in isolated child process test
*/
#include <fcntl.h>
#include <iostream>
#include <random>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <vector>
#include <libcamera/event_dispatcher.h>
#include <libcamera/logging.h>
#include <libcamera/timer.h>
#include "libcamera/internal/log.h"
#include "libcamera/internal/process.h"
#include "libcamera/internal/thread.h"
#include "libcamera/internal/utils.h"
#include "test.h"
using namespace std;
using namespace libcamera;
static const string message("hello from the child");
LOG_DEFINE_CATEGORY(LogProcessTest)
class LogProcessTestChild
{
public:
int run(int status, int num)
{
usleep(50000);
string logPath = "/tmp/libcamera.worker.test." +
to_string(num) + ".log";
if (logSetFile(logPath.c_str()) < 0)
return TestSkip;
LOG(LogProcessTest, Warning) << message;
return status;
}
};
class LogProcessTest : public Test
{
protected:
int init()
{
random_device random;
num_ = random();
logPath_ = "/tmp/libcamera.worker.test." +
to_string(num_) + ".log";
proc_.finished.connect(this, &LogProcessTest::procFinished);
return 0;
}
int run()
{
EventDispatcher *dispatcher = Thread::current()->eventDispatcher();
Timer timeout;
int exitCode = 42;
vector<std::string> args;
args.push_back(to_string(exitCode));
args.push_back(to_string(num_));
int ret = proc_.start("/proc/self/exe", args);
if (ret) {
cerr << "failed to start process" << endl;
return TestFail;
}
timeout.start(200);
while (timeout.isRunning())
dispatcher->processEvents();
if (exitStatus_ != Process::NormalExit) {
cerr << "process did not exit normally" << endl;
return TestFail;
}
if (exitCode_ == TestSkip)
return TestSkip;
if (exitCode_ != exitCode) {
cerr << "exit code should be " << exitCode
<< ", actual is " << exitCode_ << endl;
return TestFail;
}
int fd = open(logPath_.c_str(), O_RDONLY, S_IRUSR);
if (fd < 0) {
cerr << "failed to open tmp log file" << endl;
return TestFail;
}
char buf[200];
memset(buf, 0, sizeof(buf));
if (read(fd, buf, sizeof(buf)) < 0) {
cerr << "Failed to read tmp log file" << endl;
close(fd);
return TestFail;
}
close(fd);
string str(buf);
if (str.find(message) == string::npos)
return TestFail;
return TestPass;
}
void cleanup()
{
unlink(logPath_.c_str());
}
private:
void procFinished(Process *proc, enum Process::ExitStatus exitStatus, int exitCode)
{
exitStatus_ = exitStatus;
exitCode_ = exitCode;
}
Process proc_;
Process::ExitStatus exitStatus_;
string logPath_;
int exitCode_;
int num_;
};
/*
* Can't use TEST_REGISTER() as single binary needs to act as both
* parent and child processes.
*/
int main(int argc, char **argv)
{
if (argc == 3) {
int status = std::stoi(argv[1]);
int num = std::stoi(argv[2]);
LogProcessTestChild child;
return child.run(status, num);
}
return LogProcessTest().execute();
}
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