Re: PGXLOG variable worthwhile?

Dave Page wrote:
> 
>>-----Original Message-----
>>From: Bruce Momjian [mailto:pgman@candle.pha.pa.us] 
>>
>>Also, I have heard symlinks are available in native Windows 
>>but the interface to them isn't clearly visible.  Can someone 
>>clarify that?
> 
> 
> Well there are 'shortcuts' but I wouldn't want to trust my xlog
> directory to one.

These are Shell OLE links. As Dave points out, it requires the 
shell to interpret the shortcut.

> 
> Even if I did, iirc, unless you are using the shell api, they just
> appear to be regular files anyway (for example, in Cygwin vi, I can edit
> a shortcut to a directory).
> 
> Regards, Dave.

In Windows 2000 and Windows XP with an NTFS filesystem, 
Microsoft has added Reparse Points, which allow for the 
implementation of symbolic links for directories. Microsoft 
calls them "Junctions". I *believe* the function used for 
creating reparse points is DeviceIoControl() with the 
FSCTL_SET_REPARSE_POINT I/O control code. I don't have quick 
access to 2K or XP, but it is clearly not supported by Win32 on 
95/98/ME.

Here's a link discussing the features of NTFS5 and Reparse Points:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnw2kmag00/html/NTFSPart1.asp

Mike Mascari
mascarm@mascari.com