/* 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 "log.h" #include "process.h" #include "test.h" #include "thread.h" #include "utils.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; 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(); }