//%2006////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation, The Open Group.
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; Symantec Corporation; The Open Group.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
//%/////////////////////////////////////////////////////////////////////////////

#include <Pegasus/Common/System.h>
#include <Pegasus/Common/Logger.h>
#include <Pegasus/Common/FileSystem.h>
#include <Service/PidFile.h>

PEGASUS_NAMESPACE_BEGIN

PidFile::PidFile(const char* pidFilePath)
    : _pidFilePath(pidFilePath)
{
}

PidFile::~PidFile()
{
}

unsigned long PidFile::getPid()
{
    FILE* pidFile;
    unsigned long pid = 0;

    // open the PID file
    pidFile = fopen(_pidFilePath, "r");
    if (!pidFile)
    {
        return 0;
    }

    // get the pid from the file
    if (fscanf(pidFile, "%lu\n", &pid) != 1)
    {
        return 0;
    }

    fclose(pidFile);

    return pid;
}

void PidFile::setPid(unsigned long pid)
{
    // Remove the old file if it exists
    remove();

    // Open the file
    FILE *pidFile = fopen(_pidFilePath, "w");

    if (pidFile)
    {
        // Save the pid in the file
        fprintf(pidFile, "%lu\n", (unsigned long)pid);
        fclose(pidFile);
    }
}

void PidFile::remove()
{
    System::removeFile(_pidFilePath);
}

PEGASUS_NAMESPACE_END