Messages in this thread | | | Date | Wed, 08 May 2002 10:21:13 +0200 | From | Martin Dalecki <> | Subject | Re: [PATCH] 2.5.14 IDE 56 |
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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....
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