uppercase filenames

uppercase filenames

[Alejandro Néstor Vargas]

I've just installed dosemu-1.1.5.6, it's workign right but in some cases 
the files created by the dos are created as uppercase in the linux 
filesystem. In particular, I can create directories with md and they are 
created as lowercase, but if I uses mkdir form a Turbo Pascal program, it 
is created as uppercase. The same occurs from inside the ide of Turbo 
Pascal: the files (source codes) are created as uppercase. I searched for a 
configuration for this but I coudn't find any reference of this.

¿Anybody can sugest me a solution or a walk-arround for this problem?

Thanks...

-- 
Alejandro Néstor Vargas
Departamento de Desarrollo
X Net Cuyo S.A.
e-mail: anv@xnetcuyo.com.ar
jabber: anv@xnetcuyo.com.ar

Re: uppercase filenames

[Ryan Underwood]

Hi,

On Tue, Aug 12, 2003 at 08:43:34PM -0300, Alejandro Néstor Vargas wrote:
> I've just installed dosemu-1.1.5.6, it's workign right but in some cases 
> the files created by the dos are created as uppercase in the linux 
> filesystem. In particular, I can create directories with md and they are 
> created as lowercase, but if I uses mkdir form a Turbo Pascal program, it 
> is created as uppercase. The same occurs from inside the ide of Turbo 
> Pascal: the files (source codes) are created as uppercase. I searched for a 
> configuration for this but I coudn't find any reference of this.

If you are using a lredir drive, the relevant code is in dosext/mfs/mfs.c,
in dos_fs_redirect().  It looks like the file is created verbatim to the DOS
create command; if the DOS programmer happened to use all uppercase or
some mixed case in his program, the file is actually created with that
case on the unix side, even though on the dos side it is all treated as
universal case.

I agree that having mixed case filenames under unix tends to be an
annoyance.  Perhaps this should be made into a configurable option.

-- 
Ryan Underwood, <nemesis at icequake.net>, icq=10317253
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Re: uppercase filenames

[Bart Oldeman]

On Wed, 13 Aug 2003, Ryan Underwood wrote:

> On Tue, Aug 12, 2003 at 08:43:34PM -0300, Alejandro Néstor Vargas wrote:
> > I've just installed dosemu-1.1.5.6, it's workign right but in some cases
> > the files created by the dos are created as uppercase in the linux
> > filesystem. In particular, I can create directories with md and they are
> > created as lowercase, but if I uses mkdir form a Turbo Pascal program, it
> > is created as uppercase. The same occurs from inside the ide of Turbo
> > Pascal: the files (source codes) are created as uppercase. I searched for a
> > configuration for this but I coudn't find any reference of this.
>
> If you are using a lredir drive, the relevant code is in dosext/mfs/mfs.c,
> in dos_fs_redirect().  It looks like the file is created verbatim to the DOS
> create command; if the DOS programmer happened to use all uppercase or
> some mixed case in his program, the file is actually created with that
> case on the unix side, even though on the dos side it is all treated as
> universal case.

The DOS (non-LFN) create command always passes pure upper case to DOSEMU
(via int2f/ax=11xx). This used to be lowercased by some function in mfs.c
so that a lower case file was created. However by introducing LFN support
some MFS functions had to be changed to preserve case and hence some
"strlowerDOS" calls were removed. Now the strlowerDOS happens at a later
time but I think I forgot it for some cases.

> I agree that having mixed case filenames under unix tends to be an
> annoyance.  Perhaps this should be made into a configurable option.

It isn't mixed case that is a problem. LFNs preserve case by design, that
shouldn't be configurable.

The thing that is arbitrary is whether DOS SFNs are pure uppercase or pure
lowercase in the Linux filesystem. To be consistent with the view the
"msdos" and "vfat" filesystems give us they were always created lowercase
in DOSEMU.

Samba has these options (as a comparison):

a)   "mangle case = yes/no" controls if names that have characters that
   aren't of the "default" case are mangled. For example, if this is yes
   then a name like "Mail" would be mangled. Default no.

b)   "case sensitive = yes/no" controls whether filenames are case
   sensitive. If they aren't then Samba must do a filename search and
   match on passed names. Default no.

c)   "default case = upper/lower" controls what the default case is for new
   filenames. Default lower.

d)   "preserve case = yes/no" controls if new files are created with the
   case that the client passes, or if they are forced to be the "default"
   case. Default Yes.

e)   "short preserve case = yes/no" controls if new files which conform to
   8.3 syntax, that is all in upper case and of suitable length, are
   created upper case, or if they are forced to be the "default" case.
   This option can be use with "preserve case = yes" to permit long
   filenames to retain their case, while short names are lowered. Default
   Yes.

DOSEMU now uses a) no b) no c) lower d) yes e) no (but broken)
I'm not sure which of these options make sense for DOSEMU -- DOS apps
really expect case insensitivity so perhaps b)=yes is useless.

Bart

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Re: uppercase filenames

[Bart Oldeman]

On Tue, 12 Aug 2003, Alejandro Néstor Vargas wrote:

> I've just installed dosemu-1.1.5.6, it's workign right but in some cases
> the files created by the dos are created as uppercase in the linux
> filesystem. In particular, I can create directories with md and they are
> created as lowercase, but if I uses mkdir form a Turbo Pascal program, it
> is created as uppercase. The same occurs from inside the ide of Turbo
> Pascal: the files (source codes) are created as uppercase. I searched for a
> configuration for this but I coudn't find any reference of this.
> ¿Anybody can sugest me a solution or a walk-arround for this problem?

it's most likely a bug that was introduced in 1.1.5.5. I will
investigate and post a fix later.

Bart

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Re: uppercase filenames

[Alejandro Néstor Vargas]

On Wed, 13 Aug 2003 12:05:46 +0100 (BST), Bart Oldeman 
<bartoldeman@users.sourceforge.net> wrote:

>
> it's most likely a bug that was introduced in 1.1.5.5. I will
> investigate and post a fix later.

OK, then, if I download a previous version it may work right? I will try.

If you need a test program, I can write a little turbo pascal progran for 
you.


-- 
Alejandro Néstor Vargas
Departamento de Desarrollo
X Net Cuyo S.A.
e-mail: anv@xnetcuyo.com.ar
jabber: anv@xnetcuyo.com.ar

uppercase filenames: the problem is in rename

[Alejandro Néstor Vargas]

On Wed, 13 Aug 2003 12:05:46 +0100 (BST), Bart Oldeman 
<bartoldeman@users.sourceforge.net> wrote:

> it's most likely a bug that was introduced in 1.1.5.5. I will
> investigate and post a fix later.

I was creating a test program and discovered that the problem is when you 
rename a file. The test programs are in

http://www.xnetcuyo.com.ar/linux/test_dosemu/lower.pas
http://www.xnetcuyo.com.ar/linux/test_dosemu/lower.exe

It creates a lowercase file (lower1.txt) correctly. Then it renames it as 
lower2.txt and the result is LOWER2.TXT.

This is the test program. You can download the compiled exe if you want.

var f:text;
begin

assign(f,'lower1.txt');
rewrite(f);
writeln(f,'lowercase');
Writeln('The file lower1.txt has bin created. This is lowercase in the unix 
filesystem.');
Writeln('Check this and press enter to continue');
readln;
rename(f,'lower2.txt');
Writeln('lower1.txt renamed as lower2.txt. This should be lowercase but 
isn'#39't.');
close(f);

end.

-- 
Alejandro Néstor Vargas
Departamento de Desarrollo
X Net Cuyo S.A.
e-mail: anv@xnetcuyo.com.ar
jabber: anv@xnetcuyo.com.ar

Re: uppercase filenames: the problem is in rename

[Bart Oldeman]

On Wed, 13 Aug 2003, Alejandro Néstor Vargas wrote:

> On Wed, 13 Aug 2003 12:05:46 +0100 (BST), Bart Oldeman
> <bartoldeman@users.sourceforge.net> wrote:
>
> > it's most likely a bug that was introduced in 1.1.5.5. I will
> > investigate and post a fix later.
>
> I was creating a test program and discovered that the problem is when you
> rename a file. The test programs are in

right, a fix for rename is this:

--- src/dosext/mfs/mfs.c~	Wed Aug 13 21:29:51 2003
+++ src/dosext/mfs/mfs.c	Wed Aug 13 21:49:55 2003
@@ -3263,6 +3263,7 @@
     bs_pos = strrchr(fpath, '/');
     if (bs_pos == NULL)
       bs_pos = fpath;
+    strlowerDOS(bs_pos);
     strcpy(buf, bs_pos);
     *bs_pos = EOS;
     find_file(fpath, &st);


Not sure about mkdir though -- reading the source I'm convinced that it
should create the directory in lower case...

Bart


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