SERVER-12637: log a startup warning when mongod/mongos is run as root.

1 files changed, 87 insertions, 0 deletions

diff --git a/src/mongo/db/startup_warnings_common.cpp b/src/mongo/db/startup_warnings_common.cpp
new file mode 100644
index 00000000000..24087ba7b2c
--- /dev/null
+++ b/src/mongo/db/startup_warnings_common.cpp
@@ -0,0 +1,87 @@
+/**
+*    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.
+*/
+
+#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