From:	Thomas Demmer <demmer AT LSTM DOT Ruhr-UNI-Bochum DOT De>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: libc functions handling of UNCs
Date:	Fri, 26 Sep 1997 09:10:10 +0200
Organization:	Lehrstuhl fuer Stroemungsmechanik
Lines:	65
Message-ID:	<342B5FD2.8C7BA56@LSTM.Ruhr-UNI-Bochum.De>
References:	<1 DOT 5 DOT 4 DOT 32 DOT 19970925193854 DOT 0068fd8c AT dce03 DOT ipt DOT br>
NNTP-Posting-Host:	c64.lstm.ruhr-uni-bochum.de
Mime-Version:	1.0
CC:	csrabak AT dce03 DOT ipt DOT br
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Cesar Scarpini Rabak wrote:
> 
> I'm experiencing some problems with DJGPP compiled programs running from a
> Netware 4.1 server.
> 
> In a nutshell the easier way to show the problem is this sequence of commands:
> 
> C:\>truename f:
> \\URASERVER_II\SYS
> C:\>ls \\URASERVER_II\SYS
> z:/djgpp/bin/ls: //URASERVER_II/SYS: No such file or directory (ENOENT)
> 
> The same behaviour happens if I use fnsplit and fnmerge functions to build a
> initialization filename from the executable name (argv[0]).
> 
> Is there a work around or patch for this?
Here is something that might help in your own programs:


int main(int argc, char **argv){
    int ls = strrchr(argv[0],'/')-argv[0];
    char i3ecnf[256];

    strncpy(PathToExe,argv[0],ls+1);
    // Netware Fix for UNCs...
    if( (PathToExe[0]=='/') && (PathToExe[1] =='/')){
      PathToExe[0] = '\\';
      PathToExe[1] = '\\';
    }

}

The program gets argv[0] as
"//brain1/usr/home/demmer/foo.exe",
but if you change the // to \\, everything runs fine. (Under DOS6.22,
Netware 3.11
and VLM as requestor on weekdays ;-)
This snippet might help in your own code, but changes in libc are hard
and unlikely .

Opening files with a name
"\\brain1/usr/home/demmer/foo" is perfectly OK, I'm not sure about
stat() and such.
splitpath() and alikes will fail, 'cause I don't have the slightest idea
how to 
pack the machine name into a drive letter. The only idea I have is to
have a table
of names and assign them characters from (char)128 on upwards, but
that may break too much existing code. 

HTH
-- 
Ciao
Tom

*************************************************************
* Thomas Demmer                                             *
* Lehrstuhl fuer Stroemungsmechanik                         *
* Ruhr-Uni-Bochum                                           *
* Universitaetsstr. 150                                     *
* D-44780  Bochum                                           *
* Tel: +49 234 700 6434                                     *
* Fax: +49 234 709 4162                                     *
* http://www.lstm.ruhr-uni-bochum.de/~demmer                *
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