Return to BSD News archive
Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!agate!soda.berkeley.edu!wjolitz From: wjolitz@soda.berkeley.edu (William F. Jolitz) Newsgroups: comp.os.386bsd.questions Subject: Re: DOS/Windows under 386bsd (is there such?) Date: 25 May 1993 18:33:23 GMT Organization: U.C. Berkeley, CS Undergraduate Association Lines: 12 Message-ID: <1ttopj$omr@agate.berkeley.edu> References: <1tmn92INN6el@hrd769.brooks.af.mil> <1993May24.182422.7719@gmd.de> <1993May25.082233.22564@cnplss5.cnps.philips.nl> NNTP-Posting-Host: soda.berkeley.edu No. The per-process i/o bitmap is *not* in the next release. It was in 386BSD two years ago (when I was creating the system at Berkeley). It was tossed out because if you examine the instruction timing chart, it imposes a large cost for checking the damn bit map. Also, since giving access to I/O ports in many cases can allow crashes, it's hard to qualify ports for user access -- so you might as well just let it be gated by root/setuser id anyways (access to /dev/isa). Bill.