[MinGW-Notify] [mingw] #38225: Emulate _fseeki64()/_ftelli64() API on legacy platforms.

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Sat Apr 21 23:26:56 JST 2018


#38225: Emulate _fseeki64()/_ftelli64() API on legacy platforms.

  Open Date: 2018-04-21 15:26
Last Update: 2018-04-21 15:26

URL for this Ticket:
    https://osdn.net//projects/mingw/ticket/38225
RSS feed for this Ticket:
    https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=38225

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Last Changes/Comment on this Ticket:
2018-04-21 15:26 Updated by: keith
 * New Ticket "Emulate _fseeki64()/_ftelli64() API on legacy platforms." created


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Ticket Status:

      Reporter: keith
         Owner: (None)
          Type: Feature Request
        Status: Open
      Priority: 5 - Medium
     MileStone: (None)
     Component: WSL
      Severity: 5 - Medium
    Resolution: None
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Ticket details:

Although 32-bit Windows has supported operations on files larger than 2GB, since at least WinNT4 and Win98, (and possibly earlier), Microsoft did not introduce the _fseeki64() and _ftelli64() APIs until MSVCR80.DLL, (and subsequently retrofitted it to MSVCRT.DLL, from WinVista onwards); prior to this, random access support in large files was provided through lower level APIs such as _lseeki64(), or native Windows API functions.
As noted in this mailing list query, and this subsequent follow-up thread, it is practicable to emulate the _fseeki64() and _ftelli64() APIs, such that they become available on legacy versions of Windows, which pre-date the formal introduction of these APIs by Microsoft; however, previous efforts to do so may not have been entirely robust.  Hopefully, the attached patch will do a better job.

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Project URL: https://osdn.net/projects/mingw/
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URL for this Ticket:
    https://osdn.net//projects/mingw/ticket/38225
RSS feed for this Ticket:
    https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=38225




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