Date: Fri, 18 Aug 2006 10:30:11 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: Astrodog <astrodog@gmail.com> Cc: Divacky Roman <xdivac02@stud.fit.vutbr.cz>, current@freebsd.org Subject: Re: HEADS-UP: starting to commit linuxolator (SoC 2006) changes... Message-ID: <20060818103011.1w8c9mn88w800kwg@netchild.homeip.net> In-Reply-To: <2fd864e0608171556o6af3e1fdxa29c252f07c98444@mail.gmail.com> References: <20060815212143.G45647@fledge.watson.org> <20060816090653.GA820@turion.vk2pj.dyndns.org> <20060816132539.owwerbnw0okwc8wo@netchild.homeip.net> <20060817080533.GA845@turion.vk2pj.dyndns.org> <20060817122534.e57aqlbrwwogg8ko@netchild.homeip.net> <44E4454B.2080606@elischer.org> <20060817133721.h4cbucizcw8wc88k@netchild.homeip.net> <20060817140122.GA90642@stud.fit.vutbr.cz> <44E4881A.3050907@elischer.org> <20060817164352.GB96801@stud.fit.vutbr.cz> <2fd864e0608171556o6af3e1fdxa29c252f07c98444@mail.gmail.com>
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Quoting Astrodog <astrodog@gmail.com> (from Thu, 17 Aug 2006 17:56:10 -0500)= : > On 8/17/06, Divacky Roman <xdivac02@stud.fit.vutbr.cz> wrote: >> >> On Thu, Aug 17, 2006 at 08:15:38AM -0700, Julian Elischer wrote: >>> Divacky Roman wrote: >>> >>> >>Anyone with interest in this is free to take care of this, as long as >>> >>they coordinate with the people which work on the current >>> >>infrastructure on emulation@ regarding the userland/security stuff and >>> >>the kernel. Until someone stands up and shows results/progress, this >>> >>is scheduled to vanish in the future. >>> >> >>> >> >>> > >>> > >>> >I personally see this 3 possible ways: >>> > >>> >1) leave it as it is (ie. as what will be commited shortly), this means >>> >runtime >>> >checking for osrelease sysctl and behaving according to it >>> > >>> >2) introduce option LINUX_24 or something like that to make this a >> compile >>> >time build >>> > >>> >3) remove the 2.4 completely saying that "if you want 2.4 emulation >>> >downgrade fbsd as well". notice that this is 100% ok because linux >> itself >>> >doesnt support 2.4 emulation on 2.6 kernel. >>> > >>> > >>> >>> I think that would be a great selling point.. especially if two >>> processes could run the different releases at the same time.. >>> "even linux needs vmware to do this..". >> >> this is not hard to implement but remeber that it causes getpid() to be >> quite expensive function. and as netchild said - newer glibc doesnt work >> with >> 2.4 kernel so unless somone is willing to maintain libc for the old >> linux_base >> there wont be any use for this. > > > Would it be possible to maintain 2 sets? Basically, leave the old stuff > avalible, but require some sysctl or compile-time setting to use it... if > no one steps up to maintain it, let it rot. If someone wants to deal with > it... let 'em! Don't think about the kernel part. There are multiple ways of handling =20 it. You could even move the 2.4 code to "linux24" and brandelf only =20 some apps with "Linux24" instead of "Linux". This way you don't need =20 to check every time and you don't need to do a sysctl for the apps in =20 question. The kernel is the easy part. The hard part is the userland =20 stuff. As one of two active people which take care of the linux =20 userland infrastructure in ports I can tell you that we just have the =20 official man power to maintain one linux_base infrastructure. And this =20 doesn't take into account that old linux_base ports which still work =20 with 2.4 but will go away in the future and that the linux =20 distributors don't fix security bugs in old releases (so we have to =20 move on to newer linux binaries and remove the old ones). The =20 person(s) taking care about the linux24 stuff would have to create =20 binary packages with fixes for this himself. Bye, Alexander. --=20 A political man can have as his aim the realization of freedom, but he has no means to realize it other than through violence. =09=09-- Jean Paul Sartre http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID =3D B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID =3D 72077137
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