Re: [PATCH] 2.5.14 IDE 56

[Martin Dalecki]

Użytkownik Richard Gooch napisał:
> Linus Torvalds writes:
> 
>>
>>On Tue, 7 May 2002, Alan Cox wrote:
>>
>>>>>Fugly. What's wrong with readlink(2) as this "magic syscall"?
>>>>
>>>>Ehh - like the fact that it doesn't work on device files?
>>>
>>>I can't find anything in Posix/SuS that says it isnt allowed to however 8)
>>
>>We can certainly do it, it just doesn't buy us much of anything, since
>>none of the standard tools (ie "ls") will actually do the readlink() for
>>anything but a symlink.
>>
>>So at that point it's just another magic syscall, except we've overloaded
>>an old one.
>>
>>Which may certainly be acceptable, of course.
> 
> 
> I wasn't suggesting a magic readlink(2). I was suggesting a *real*
> one. Device nodes get stored in the physical tree (what you call
> driverfs), and the entries in the logical tree are symlinks. Such as:
> 
> 	/dev/scsi/host0  symlink to  /dev/bus/pci0/slot1/function2
> 
> or something like that. Easy to implement, easy to understand, easy to
> manage.

Now you take the last step toward solaris and realize why I was
always against your solution (no personal offence)
to the device management problem - they do it all in user space
by precisely the above symlink system....