Status createPidFile() {
// check if pidfile exists
auto exists = pathExists(FLAGS_pidfile);
if (exists.ok()) {
// if it exists, check if that pid is running.
std::string content;
auto read_status = readFile(FLAGS_pidfile, content);
if (!read_status.ok()) {
return Status(1, "Could not read pidfile: " + read_status.toString());
}
auto stale_status = checkStalePid(content);
if (!stale_status.ok()) {
return stale_status;
}
}
// Now the pidfile is either the wrong pid or the pid is not running.
try {
boost::filesystem::remove(FLAGS_pidfile);
} catch (boost::filesystem::filesystem_error& e) {
// Unable to remove old pidfile.
LOG(WARNING) << "Unable to remove the osqueryd pidfile";
}
// If no pidfile exists or the existing pid was stale, write, log, and run.
auto pid = boost::lexical_cast<std::string>(getpid());
LOG(INFO) << "Writing osqueryd pid (" << pid << ") to " << FLAGS_pidfile;
auto status = writeTextFile(FLAGS_pidfile, pid, 0644);
return status;
}
Status createPidFile() {
// check if pidfile exists
auto pidfile_path = fs::path(FLAGS_pidfile).make_preferred();
if (pathExists(pidfile_path).ok()) {
// if it exists, check if that pid is running.
std::string content;
auto read_status = readFile(pidfile_path, content, true);
if (!read_status.ok()) {
return Status(1, "Could not read pidfile: " + read_status.toString());
}
auto stale_status = checkStalePid(content);
if (!stale_status.ok()) {
return stale_status;
}
}
// Now the pidfile is either the wrong pid or the pid is not running.
try {
boost::filesystem::remove(pidfile_path);
} catch (const boost::filesystem::filesystem_error& /* e */) {
// Unable to remove old pidfile.
LOG(WARNING) << "Unable to remove the osqueryd pidfile";
}
// If no pidfile exists or the existing pid was stale, write, log, and run.
auto pid = boost::lexical_cast<std::string>(
PlatformProcess::getCurrentProcess()->pid());
VLOG(1) << "Writing osqueryd pid (" << pid << ") to "
<< pidfile_path.string();
auto status = writeTextFile(pidfile_path, pid, 0644);
return status;
}
