Perl calls the C runtime fstat() to get the information. I the case of MSVC the actual call is _fstati64() which in turn calls GetFileInformationByHandle(). That returns a structure called BY_HANDLE_FILE_INFORMATION, which contains to DWORDS fields that contain the filesize. The filesize as it would be if you read the whole think into memory. Ie. decompressed, de-sparsed etc.

To get the actual on-disk size you would need to call GetCompressedFileSize().

Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail

In reply to Re: Re: Re: filesize module on win32 systems by BrowserUk
in thread filesize module on win32 systems by Anonymous Monk

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