[ale] What are the major/minor #s for sr0 ?

[Courtney Thomas]

No, I think you put it well.

Thank you.



Danny Cox wrote:

> Courtney,
> 
> On Wed, 2003-02-26 at 08:19, Courtney Thomas wrote:
> 
>>Also, it does work as scd0, but how is that.... if it is identified as 
>>sr0 by it's driver, [may be unanswerable due to lack of detail about 
>>driver function] ?
>>
> 
> 	Because it's a "special file" ;-).  The name means nothing, except that
> some programs expect certain names (e.g. hdparm expects /dev/hdM). 
> Other than that you *could* rename "scd0" to "BillyBob", though I don't
> recommend it ;-).  The major and minor device numbers are what the
> kernel uses to determine which driver handles the requests.  
> 
> 	When the drivers init routines are called, they register for the major
> devices they "own".  In this case, the scsi subsystem tells the kernel
> that it wants the major 11s, and internally to the scsi driver, directs
> major 11 requests to its cdrom subsystem.
> 
> 	Clear as mud?
> 
> 


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