Check for locked files in Directory and find locking applicaiton

Question

I am wanting to create a PowerShell script that will find any files that are locked within a supplied directory and return the application/process that has locked the file.

I have found a script which goes through a directory and when it finds a locked file will stop and report the file is locked.

Function Test-Lock{
    param(
    [parameter(ValueFromPipeline=$true)]
    $Path
    )
    Process {
        if($Path.Attributes -ne 'Directory'){
            $oFile = New-Object System.IO.FileInfo $Path.FullName
            $locked=$false
            try{
                $oStream = $oFile.Open([System.IO.FileMode]::Open, [System.IO.FileAccess]::ReadWrite, [System.IO.FileShare]::None)
                $oStream.Close()
                }
            catch{
                write-host $Error[0]
                $locked=$true
                New-Object PSObject -Property @{'Path'=$Path.FullName;'Locked?'=$locked} | Select Path,Locked?
                } 

        }
    }
}
$lockedfiles=(gci C:\temp | Test-Lock)
$lockedfiles | Format-Table -auto

This returns:

Path                  Locked?
----                  ------- 
C:\temp\ReportReq.doc    True

I cannot work out how to find the application or proecess that has this file locked.

Answer 1

Well, You need to use handle.exe from sysinternals to achieve this. Adam Driscoll, a PowerShell MVP, wrote a PowerShell version of sysinternals handle.exe. You can check that at: https://github.com/adamdriscoll/PoshInternals/blob/master/Handle.ps1

Also, there is a similar question answered here by Keith Hill: PowerShell script to check an application that's locking a file?

Answer 2

If you only want to check if file is locked or not use this:

try {
   [IO.File]::OpenWrite($file).close();
}catch {
   $locked = 1;
};