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path: root/src/mongo/db/startup_warnings_common.cpp
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/**
*    Copyright (C) 2014 MongoDB Inc.
*
*    This program is free software: you can redistribute it and/or  modify
*    it under the terms of the GNU Affero General Public License, version 3,
*    as published by the Free Software Foundation.
*
*    This program is distributed in the hope that it will be useful,
*    but WITHOUT ANY WARRANTY; without even the implied warranty of
*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*    GNU Affero General Public License for more details.
*
*    You should have received a copy of the GNU Affero General Public License
*    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*
*    As a special exception, the copyright holders give permission to link the
*    code of portions of this program with the OpenSSL library under certain
*    conditions as described in each individual source file and distribute
*    linked combinations including the program with the OpenSSL library. You
*    must comply with the GNU Affero General Public License in all respects
*    for all of the code used other than as permitted herein. If you modify
*    file(s) with this exception, you may extend this exception to your
*    version of the file(s), but you are not obligated to do so. If you do not
*    wish to do so, delete this exception statement from your version. If you
*    delete this exception statement from all source files in the program,
*    then also delete it in the license file.
*/

#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kControl

#include "mongo/platform/basic.h"

#include "mongo/db/startup_warnings_common.h"

#include <boost/filesystem/operations.hpp>
#include <fstream>

#include "mongo/util/log.h"
#include "mongo/util/processinfo.h"
#include "mongo/util/version.h"

namespace mongo {

    //
    // system warnings
    //
    void logCommonStartupWarnings() {
        // each message adds a leading and a trailing newline

        bool warned = false;
        {
            const char * foo = strchr(versionString , '.') + 1;
            int bar = atoi(foo);
            if ((2 * (bar / 2)) != bar) {
                log() << startupWarningsLog;
                log() << "** NOTE: This is a development version (" << versionString
                      << ") of MongoDB." << startupWarningsLog;
                log() << "**       Not recommended for production." << startupWarningsLog;
                warned = true;
            }
        }

#if defined(_WIN32) && !defined(_WIN64)
        // Warn user that they are running a 32-bit app on 64-bit Windows
        BOOL wow64Process;
        BOOL retWow64 = IsWow64Process(GetCurrentProcess(), &wow64Process);
        if (retWow64 && wow64Process) {
            log() << "** NOTE: This is a 32-bit MongoDB binary running on a 64-bit operating"
                    << startupWarningsLog;
            log() << "**      system. Switch to a 64-bit build of MongoDB to"
                    << startupWarningsLog;
            log() << "**      support larger databases." << startupWarningsLog;
            warned = true;
        }
#endif

#if !defined(_WIN32)
        if (getuid() == 0) {
            log() << "** WARNING: You are running this process as the root user, "
                  << "which is not recommended." << startupWarningsLog;
            warned = true;
        }
#endif

        if (warned) {
            log() << startupWarningsLog;
        }
    }
} // namespace mongo