On 20 Mar 2012, at 8:52 PM, Prime Coderama wrote:

> Does anyone know why the assignment of NSFileOwnerAccountName and 
> NSFileGroupOwnerAccountName does not work? The directory created defaults to 
> my account and the staff group.
> 
>    NSFileManager *fileManager = [NSFileManager defaultManager];
>    NSMutableDictionary *attr = [NSMutableDictionary dictionary]; 
>    [attr setObject:@"root" forKey:NSFileOwnerAccountName];
>    [attr setObject:@"wheel" forKey:NSFileGroupOwnerAccountName]; 
>    [attr setObject:[NSNumber numberWithInt:0755] 
> forKey:NSFilePosixPermissions];
> 
>    [fileManager createDirectoryAtPath:dir withIntermediateDirectories:TRUE 
> attributes:attr error:&error];

Standard UNIX privileges, which I don't have time or space to treat in full. 
You can't change the owner of a file, or act as another owner, without 
obtaining root/admin privileges.

You can UNIX permissions by Google. On OS X, look up Security.framework.

        — F


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