Filename case handling

[Duane Clark]

I have a question about the handling of filename case when trying to 
find an existing file. When files are on a win filesystem, the case is 
ignored, by the setting of flags by DRIVE_GetFlags(). As expected.

When on a ext filesystem, that call sets the DRIVE_CASE_SENSITIVE flag, 
which is ok. But then the flag is used in the call to 
DOSFS_FindUnixName() (from DOSFS_GetFullName()), and I guess the 
fundamental question I have is under what circumstances wine would want 
to do a case sensitive search.

One of my apps (Xilinx ngdbuild) always supplies upper case names when 
searching for a file, but the files always have lower case names (they 
were created by another Xilinx app). When searching for this file in 
DOSFS_FindUnixName() on an ext filesystem, the first test always fails, 
because we do a case sensitive test:

if (!ignore_case)
             {
                 if (!strncmp( long_name, name, len )) break;
             }

However, and here is the other part I am questioning, if the file is an 
8.3 filename, an alternate dos filename is created by 
DOSFS_ToDosFCBFormat(), and then a second test is performed here:

if (!strcmp( dos_name, short_name )) break;

This call passes and the file is found.

However, if the file is not an 8.3 filename, the call to 
DOSFS_ToDosFCBFormat() fails, and no case insensitive test is made.

So it seems to me that either a case sensitive search should be made in 
both cases, or in neither case. And of course I think that it should be 
both cases (since this fixes my app) :-)

Duane

[Uwe Bonnes]

> > > > > "Duane" == Duane Clark  writes:

Duane> I have a question about the handling of filename case when trying
    Duane> to find an existing file. When files are on a win filesystem, the
    Duane> case is ignored, by the setting of flags by DRIVE_GetFlags(). As
    Duane> expected.

...
    Duane> However, if the file is not an 8.3 filename, the call to
    Duane> DOSFS_ToDosFCBFormat() fails, and no case insensitive test is
    Duane> made.

What Filesystem have you set for the drive? It should be "vfat" is you want
a case insensitive search...

Bye

[Duane Clark]

Uwe Bonnes wrote:
> > > > > > "Duane" == Duane Clark  writes:
> Duane> I have a question about the handling of filename case when trying
> Duane> to find an existing file. When files are on a win filesystem, the
> Duane> case is ignored, by the setting of flags by DRIVE_GetFlags(). As
> Duane> expected.
>
> ...
>     Duane> However, if the file is not an 8.3 filename, the call to
>     Duane> DOSFS_ToDosFCBFormat() fails, and no case insensitive test is
>     Duane> made.
>
> What Filesystem have you set for the drive? It should be "vfat" is you want
> a case insensitive search...

Thanks. That was indeed it, though the documentation on winehq says 
"win95", so I used that instead of vfat.

[Uwe Bonnes]

> > > > > "Duane" == Duane Clark  writes:

Duane> Thanks. That was indeed it, though the documentation on winehq
    Duane> says "win95", so I used that instead of vfat.

VFAT and WIN95 should do the same. Could you investigate a little more?

Bye

[Duane Clark]

Uwe Bonnes wrote:
> > > > > > "Duane" == Duane Clark  writes:
> Duane> Thanks. That was indeed it, though the documentation on winehq
> Duane> says "win95", so I used that instead of vfat.
>
> VFAT and WIN95 should do the same. Could you investigate a little more?

Sorry, I think the way I worded that confused everyone. I previously had 
"unix" as the disk "Filesystem" (I guess I thought that was required for 
ext filesystems). After reading your message, I took a look at the docs, 
and they said "win95" but made no mention of "vfat". So I put win95 in 
the config file, and that fixed things. Now I also tried vfat, and that 
also works fine.

Of course, that still leaves "unix" filesystems being case insensitive 
to 8.3 filenames but case sensitive to long filenames...

Duane