Re: [Mingw-users] getting the size of large files under ntfs

[Luke D. <cod...@ho...>]

----- Original Message ----- 
From: "Earl Kinmonth" <eh...@go...>
To: <min...@li...>
Sent: Saturday, March 05, 2005 3:29 AM
Subject: [Mingw-users] getting the size of large files under ntfs


> In comparing various packages that provide an UNIX-like under Windows, I
> found that the stat() function in the MINGW clib does not return the 
> proper
> file size for files over 4 gigabytes.

Yes. The documentation page for _stat() (on MSDN) does also describe 
_stati64(), which should give better results (as would GetFileSize()).

>  Presumably because it uses the same
> library, the ls command of MSYS also does not report the proper file size
> for files over 4 gigabytes.
>  (The size at which the failure takes place may
> be less.  I simply happened to have a 4.8 gigabyte file that was reported
> as approximately 500 megabytes.)

I just tried "ls -l" on a 3.3 GB file and it gave a weird 20-digit number, 
so I guess it probably works on files <2GB.

Luke

>  I have also found the same failing in the
> Microsoft (Interix) Services for Unix and in the ATT Uwin package.  Since
> the dir command in a "dos box" returns the proper file size, I presume
> there is an underlying system call that does return the proper size for
> large files.
>
> I do video editing under Windows 2000.  For some applications, the work
> file can be 60 or 70 gigabytes....
>
> I did do a search through the archives using the key words stat and ntfs
> without finding anything relevant to this problem.
>
> EHK