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BUG#: 8334
TITLE: Implementation of TraceFileHandlerPOSIX.cpp doesn't need to differentiate between OpenVMS and POSIX.

DESCRIPTION: Remove OpenVMS specific code.

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// this work for additional information regarding copyright ownership.
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#if defined(PEGASUS_OS_VMS)
# include <fcntl.h>
#endif
#include <Pegasus/Common/System.h>
#include <Pegasus/Common/TraceFileHandler.h>
#include <Pegasus/Common/Mutex.h>

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN

static Mutex writeMutex;
PEGASUS_FORK_SAFE_MUTEX(writeMutex)

///////////////////////////////////////////////////////////////////////////////
//  Writes message to file. Locks the file before writing to it
//  Implementation of this function is platform specific
///////////////////////////////////////////////////////////////////////////////

void TraceFileHandler::prepareFileHandle(void)
{
    // If the file has been deleted, re-open it and continue
    if (!System::exists(_fileName))
    {
        fclose(_fileHandle);
        _fileHandle = _openFile(_fileName);
        if (!_fileHandle)
        {
            return;
        }
    }

    // Got the Lock on the File. Seek to the end of File
    fseek(_fileHandle, 0, SEEK_END);
# ifdef PEGASUS_PLATFORM_LINUX_GENERIC_GNU
    long pos = ftell(_fileHandle);
    // Check if the file size is approaching 2GB - which is the
    // maximum size a file on 32 bit Linux can grow (ofcourse if
    // not using large-files option). If this is not checked, the
    // cimserver may get a SIGXFSZ signal and shutdown. See Bug#1527.
    if (pos >= 0x7ff00000)
    {
        // If the file size is almost 2 GB in size, close this trace
        // file and open a new trace file which would have _fileCount
        // as the suffix. So, if "cimserver.trc" is the trace file that
        // approaches 2GB, the next file which gets created would be
        // named "cimserver.trc.1" and so on ...
        fclose(_fileHandle);
        sprintf(_fileName, "%s.%u", _baseFileName, ++_fileCount);
        _fileHandle = fopen(_fileName, "a+");
        if (!_fileHandle)
        {
            // Unable to open file, log a message
            MessageLoaderParms parm(
                "Common.TraceFileHandler.FAILED_TO_OPEN_FILE",
                "Failed to open File $0",
                _fileName);
            _logError(TRCFH_FAILED_TO_OPEN_FILE_SYSMSG,parm);
            return;
        }
    }
# endif
}

void TraceFileHandler::handleMessage(
    const char *message,
    Uint32 msgLen,
    const char *fmt, va_list argList)
{
    if (_configHasChanged)
    {
        _reConfigure();
    }

    if (!_fileHandle)
    {
        // The trace file is not open, which means an earlier fopen() was
        // unsuccessful.  Stop now to avoid logging duplicate error messages.
        return;
    }

    // Do not add Trace calls in the Critical section
    // ---- BEGIN CRITICAL SECTION
    AutoMutex writeLock(writeMutex);

    prepareFileHandle();
    // Write the message to the file
    fprintf(_fileHandle, "%s", message);
    vfprintf(_fileHandle, fmt, argList);
    fprintf(_fileHandle, "\n");
    if (0 == fflush(_fileHandle))
    {
        // trace message successful written, reset error log messages
        // thus allow writing of errors to log again
        _logErrorBitField = 0;
    }

    // ---- END CRITICAL SECTION
}

void TraceFileHandler::handleMessage(const char *message, Uint32 msgLen)
{
    if (_configHasChanged)
    {
        _reConfigure();
    }

    if (!_fileHandle)
    {
        // The trace file is not open, which means an earlier fopen() was
        // unsuccessful.  Stop now to avoid logging duplicate error messages.
        return;
    }

    // Do not add Trace calls in the Critical section
    // ---- BEGIN CRITICAL SECTION
    AutoMutex writeLock(writeMutex);

    prepareFileHandle();
    // Write the message to the file
    fprintf(_fileHandle, "%s\n", message);
    if (0 == fflush(_fileHandle))
    {
        // trace message successful written, reset error log messages
        // thus allow writing of errors to log again
        _logErrorBitField = 0;
    }
    // ---- END CRITICAL SECTION
}

PEGASUS_NAMESPACE_END