Messages in this thread | | | Date | 17 May 2001 23:06:00 +0200 | From | (Kai Henningsen) | Subject | Re: LANANA: To Pending Device Number Registrants |
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rgooch@ras.ucalgary.ca (Richard Gooch) wrote on 16.05.01 in <200105162054.f4GKsaF10834@vindaloo.ras.ucalgary.ca>:
> H. Peter Anvin writes: > > Richard Gooch wrote: > > > > > > H. Peter Anvin writes: > > > > Richard Gooch wrote: > > > > > Argh! What I wrote in text is what I meant to say. The code didn't > > > > > match. No wonder people seemed to be missing the point. So the line > > > > > of code I actually meant was: > > > > > if (strcmp (buffer + len - 3, "/cd") != 0) { > > > > > > > > This is still a really bad idea. You don't want to tie this kind of > > > > things to the name. > > > > > > Why do you think it's a bad idea? > > > > Because you are now, once again, tying two things that are > > completely and utterly unrelated: device classification and device > > name. It breaks every time someone comes out with a new device > > which is "kind of like an old device, but not really," like > > CD-writers (which was kind-of-like WORM, kind-of-like CD-ROM) and > > DVD (kind-of-like CD)... > > But all devices which export a CD-ROM interface will do so. So the > device node that is associated with the CD-ROM driver will export > CD-ROM semantics, and the trailing name will be "/cd".
Uh, how do they have the filename end in more than one device type suffix at the same time?
That was the point, remember. You're trying to find out about a device on the end of your file handle, and that device *does* match more than one of these.
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