Date: Sun, 20 Oct 1996 14:02:50 -0400 From: Rohit Dube <rohit@cs.umd.edu> To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) Cc: freebsd-hackers@freebsd.org (FreeBSD hackers) Subject: Re: Conventions/Rules for adding Local ioctls Message-ID: <199610201802.OAA27834@darling.cs.umd.edu> In-Reply-To: Your message of "Sun, 20 Oct 1996 09:10:17 %2B0200." <199610200710.JAA27702@uriah.heep.sax.de>
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On Sun, 20 Oct 1996 09:10:17 +0200 (MET DST) j@uriah.heep.sax.de writes: =>You must avoid the `f' group (FIOxxx, see <sys/filio.h>) since the =>generic ioctl code handles them first, independently of the underlying =>driver. => =>You must avoid any of the cmds your driver intends to pass on to =>underlying physical devices (by directly calling their ioctl entry =>point). Thanks for your reply. => =>> I was hoping for a globally maintained file hidden somewhere which listed =>> at least the 'taken' groups. More comments?? => =>We will happily include it somewhere in the documentation if you write =>this file. (no smiley, no joke!) Ok, I'll try to cook this over the next couple of days as I look thru the various.h files to make sure that I don't conflict with other code. => =>Of course, don't be surprised, with only 2*26 letters, it's very =>likely that several groups are already in duplicate use. => Hmmmmm. --rohit.
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