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Creating directories with Version Limits?

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The Question is:

 
I want to dynamically use version_limit option from my C program when I am
 creating the file and directory. Just like the commands,
 
1. CREATE/DIRECTORY/VERSION_LIMIT=5 [JOHN.DOE.MYDIR]
2. SET FILE /VERSION_LIMIT=5 filename.c
 
Is it possible ? Can you explain with an example ?
 
Thanks in advance
Sandeep
 
 

The Answer is :

    See LIBRTL routine LIB$CREATE_DIR
 
    LIB$CREATE_DIR device-directory-spec [,owner-UIC]
        [,protection-enable] [,protection-value] [,maximum-versions]
        [,relative-volume-number] [,initial-allocation]
 
    ...
    maximum-versions
 
    OpenVMS usage:  word_unsigned
    type:  word (unsigned)
    access:  read only
    mechanism: by reference
 
    Maximum number of versions allowed for files created in the newly
    created directories. The maximum-versions argument is the address of an
    unsigned word containing the value of the maximum number of versions.
    The maximum-versions argument is optional. The default is the parent
    directory's default version limit. If maximum-versions is zero, the
    maximum number of versions is not limited.
 
 
    Your "SET FILE/VERSION" is redundant as the setting on the directory
    will do what you want.

  

     

     
answer written or last revised on ( 21-OCT-2004 )
     
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