Re: CD writing in future Linux (stirring up a hornets' nest)

[Joerg Schilling <schilling@fokus.fraunhofer.de>]

jerome lacoste <jerome.lacoste@gmail.com> wrote:

> On 2/13/06, Joerg Schilling <schilling@fokus.fraunhofer.de> wrote:
> [...]
> > > > Since -scanbus tells you a
> > > > device is a CDrecorder, or something else, *any user* is likely to be
> > > > able to tell it from DCD, CD-ROM, etc. Nice like of text for most devices...
> > >
> > > Well, "any user" just opens his Windows Explorer and takes a look at the
> > > icon of his drive D:\\ to see whether it's a CD-ROM or DVD. It is
> > > interesting to see professional programmers often argue that a
> >
> > This is not true: a drive letter mapping does not need to exist on MS-WIN
> > in order to be able to access it via ASPI or SPTI.
>
> But from a user perspective, how one is supposed to identify between 2
> identical burners named D: and E: on their system if cdrecord only
> provides b,t,l naming and "b,t,l to cd burner name" mapping?

Drive letters do not have real relevence from a OS view if talking about MS-WIN

> The "OS specific to b,t,l" mapping is clearly lacking although
> cdrecord knows it there as well. Cf. scsi-wnt.c:
>
> #ifdef _DEBUG_SCSIPT
>         js_fprintf(scgp_errfile,  "SPTI: Adding drive %c: (%d:%d:%d)\n", 'A'+i,
>                                         pDrive->ha, pDrive->tgt, pDrive->lun);
> #endif

The is no mapping, libscg just let's the user use the addressing used inside 
the MS-WIN kernel.

The drive letter related code was contributed by a russion guy who did
try to find a way to lock a drive in use by cdrecord, preventing 
automount/autoexec. This is unfortunately a bit brain-dead and caused by 
MS-WIN oddities.


Jörg

-- 
 EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
       js@cs.tu-berlin.de                (uni)  
       schilling@fokus.fraunhofer.de     (work) Blog: http://schily.blogspot.com/
 URL:  http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
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