PSBasicInfo.psm1
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$script:memberDefinition = @'
public struct FILE_BASIC_INFO { [MarshalAs(UnmanagedType.I8)] public Int64 CreationTime; [MarshalAs(UnmanagedType.I8)] public Int64 LastAccessTime; [MarshalAs(UnmanagedType.I8)] public Int64 LastWriteTime; [MarshalAs(UnmanagedType.I8)] public Int64 ChangeTime; [MarshalAs(UnmanagedType.U4)] public UInt32 FileAttributes; } [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)] public static extern IntPtr CreateFile( [MarshalAs(UnmanagedType.LPTStr)] string filename, [MarshalAs(UnmanagedType.U4)] UInt32 access, [MarshalAs(UnmanagedType.U4)] UInt32 share, IntPtr securityAttributes, // optional SECURITY_ATTRIBUTES struct or IntPtr.Zero [MarshalAs(UnmanagedType.U4)] UInt32 creationDisposition, [MarshalAs(UnmanagedType.U4)] UInt32 flagsAndAttributes, IntPtr templateFile); [DllImport("kernel32.dll", SetLastError=true)] public static extern bool CloseHandle(IntPtr hObject); [DllImport("kernel32.dll", SetLastError = true)] public static extern bool GetFileInformationByHandleEx( IntPtr hFile, int infoClass, out FILE_BASIC_INFO fileInfo, uint dwBufferSize); '@ function Get-ItemBasicInfo { [CmdletBinding()] param( # Path to file or directory [Parameter(Mandatory = $true, Position = 0, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)] [ValidateScript({Test-Path -Path $_.FullName})] [System.IO.FileSystemInfo] $Path ) begin { Add-Type -MemberDefinition $script:memberDefinition -Name File -Namespace Kernel32 } process { $currentPath = $Path.FullName try { Write-Verbose "CreateFile: Open file $currentPath" $fileHandle = [Kernel32.File]::CreateFile($currentPath, [System.IO.FileAccess]::Read, [System.IO.FileShare]::ReadWrite, [System.IntPtr]::Zero, [System.IO.FileMode]::Open, [System.UInt32]0x02000000, [System.IntPtr]::Zero) if($fileHandle -eq -1) { throw "CreateFile: Error opening file $Path" } # Output object $fileBasicInfo = New-Object -TypeName Kernel32.File+FILE_BASIC_INFO Write-Verbose "GetFileInformationByHandleEx: Get basic info" $bRetrieved = [Kernel32.File]::GetFileInformationByHandleEx($fileHandle,0, [ref]$fileBasicInfo, [System.Runtime.InteropServices.Marshal]::SizeOf($fileBasicInfo)) if(!$bRetrieved) { throw "GetFileInformationByHandleEx: Error retrieving item information" } # Return result [PSCustomObject]@{ Item = $Path CreationTime = [System.DateTime]::FromFileTime($fileBasicInfo.CreationTime) LastAccessTime = [System.DateTime]::FromFileTime($fileBasicInfo.LastAccessTime) LastWriteTime = [System.DateTime]::FromFileTime($fileBasicInfo.LastWriteTime) ChangeTime = [System.DateTime]::FromFileTime($fileBasicInfo.ChangeTime) FileAttributes = $fileBasicInfo.FileAttributes } } catch { throw $_ } finally { Write-Verbose "CloseHandle: Close file $currentPath" $bClosed = [Kernel32.File]::CloseHandle($fileHandle) if(!$bClosed) { Write-Warning "CloseHandle: Error closing handle $fileHandle of $Path" } } } } |