hard links in windows

This is a discussion on hard links in windows within the Tech Board forums, part of the Community Boards category; Is there such a thing as a hard link with windows? If so how can one be made?...

  1. #1
    zsaniK Kinasz's Avatar
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    hard links in windows

    Is there such a thing as a hard link with windows?

    If so how can one be made?
    "Assumptions are the mother of all **** ups!"

  2. #2
    5|-|1+|-|34|) ober's Avatar
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    umm... ever heard of a shortcut? You can make a link to almost any file/directory you want (where most Linux distros will not allow you to use the ln command to make a hard link to a directory).

    To make a shortcut to any file/folder, right-click and drag a file/folder in any direction. Three options should pop-up and one is to make a shortcut to the item you just dragged. Click and wa-la!

  3. #3
    S Sang-drax's Avatar
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    Yes, there are hard links in Windows (only on NTFS). They are not equivalent to shortcuts.

    They work like Unix hard links and was implemented in NTFS to make it POSIX-compatible

    Even though no Windows GUI uses hard links, you can create them with the function
    Code:
    BOOL CreateHardLink(
      LPCTSTR lpFileName,
      LPCTSTR lpExistingFileName,
      LPSECURITY_ATTRIBUTES lpSecurityAttributes
    );
    the security attributes must be NULL, and the other two parameters should be very easy to understand.

    I used this a long time ago to fake-share in some file sharing program. They are impossible (unlike linux hardlinks) to distinguish from 'normal' files.
    Last edited by Sang-drax : Tomorrow at 02:21 AM. Reason: Time travelling

  4. #4
    zsaniK Kinasz's Avatar
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    excellent! Thankyou sang drax that is exactly what I was after.

    Yes, i have heard of shortcuts, but if that was what I was asking I would have said symlinks in windows. I would like a program to exist in multiple places with different names, but I was hoping to be more efficient than copying it all over the place. Program has to get its name from argv[0] so shortcuts are out. But thankyou anyway ober.
    "Assumptions are the mother of all **** ups!"

  5. #5
    5|-|1+|-|34|) ober's Avatar
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    ??? You can still send command line arguments to a program with a shortcut!! Don't make something harder than it has to be.

  6. #6
    zsaniK Kinasz's Avatar
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    really? I didnt know that, I hadn't even considered it but I will now. It would certainly add the advantage of portablility to fat.

    Will argv[0] show up the name of the program or the name of the shortcut?
    "Assumptions are the mother of all **** ups!"

  7. #7
    Its not rocket science vasanth's Avatar
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    argv[0] will hold the name of the program even if invoked with the shortcut....

  8. #8
    End Of Line Hammer's Avatar
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    >>Will argv[0] show up the name of the program or the name of the shortcut?
    Just try it and see! You shouldn't really rely on argv[0] for the process name, try something like GetModuleFileName (if available!)

    So, to clarify your question, if you have a program and a link, like so:
    c:\dirA\prog1.exe
    c:\dirB\prog1.exe.lnk
    ... do you want argv[0] to display the same for both, or to be different?
    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

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