DOSFS_ToFCBFormat Bug Fix

[David Elliott]

On 2002.01.14 13:21 Francois Gouget wrote:
> On Mon, 14 Jan 2002, Ove Kaaven wrote:
> 
> >
> > On Sun, 13 Jan 2002 ccrayne at crayne.org wrote:
> >
> > > Change Log:
> > > files/dos_fs.c
> > > ccrayne at crayne.org
> > > Fixed bug in DOSFS_ToFCBFormat which caused "*" to parse as "*."
> instead
> > > of as "*.*"
> >
> > This sounds like intended behaviour. Under real DOS, "*" really means
> > "*.". The user must type "*.*" to get all files. (This is the stuff
> that
> > used to confuse DOS users converting to Linux - "*.*" no longer meant
> all
> > files...)
> 
>    Strange because if I open a 'dos box' in Win95 or NT4, and I type
> 'dir *' I get a list of all the files, including those that have an
> extension like "autoexec.bat".
> 

Yup!  With long filenames windows treats the extension like UNIX does.  
That is a "dir *" will in fact show all files in the directory when 
command.com is running under windows.

When it's not running under windows a "dir *" is equivilent to a "dir *."

As for dir *.* showing filenames not containing a dot... well, I think 
this is because short names are still around and therefore when you look 
up the file as an 8.3 name *.* does match it because a file named "FOOBAR" 
will have the shortname equivilant to "FOOBAR."

Anybody know what happens under NT if you turn off short name generation, 
then make a file named foobar and then do a dir *.* in that directory?  I 
am guessing MS has this figured out and when the windows APIs see "*.*" 
they convert it to a simple "*".  Of course I could be wrong and it may in 
fact simply not show the file since *.* would not match it by standard 
wildcard rules as it has no shortname with an implicit dot and the 
longname doesn't contain a dot.

Should be simple enough to test.  Load up NT or 2k, mod the reg to disable 
short filenames, reboot, make the file then do a dir /x (I think it is /x) 
to show both long and short filenames and verify it does not have a SFN.  
Then dir *.* and see if it finds it.

-Dave