December 2007 - Darwin-kernel

[?? Probable Spam] Re: Placing Kext at custom location instead of /System/Library/Extensions
by Rustam Muginov 07 Dec '07

07 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Placing Kext at custom location instead of /System/Library/Extensions
by Greg 07 Dec '07

07 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com - Greg On Dec 7, 2007, at 1:43 AM, JanakiRam wrote: Hi All, -JanakiRam. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/greg%40kinostudios.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I've a feeling many people are going to tell you not to do that. I'm not a kernel expert, but here are the reasons I would give: 1) It also goes against Apple's philosophy of having designated folders for things. For example, Apple recommends that you put your preferences (plist) files in ~/Library/Preferences, any support data in ~/Library/Application Support, etc. This keeps the system consistent, easy to back up and troubleshoot, and avoids the clutter that occurs on other systems (Microsoft Windows comes to mind). 2) System upgrades (e.g. going from 10.4 to 10.5) likely look for third party extensions in specific locations, and /opt is not one of them. 3) The /opt folder does not exist by default on OS X systems, and when it does, it usually belongs to the MacPorts project (http://www.macports.org/ ). 4) People will shun your product. There are a lot of mac users that will take personal grudge against you for doing things in a "non-Apple way", and they'll have reasons of their own for doing so. There are probably a lot more (better) reasons than that, but those are just off the top of my head. I've developed a kext for my product . To have more control on loading the kext (after login) , i'm planning to place it at custom location ( /opt/myproductfolder) instead of /System/Library/ Extensions. Can any one point out the pros & cons for the location change ? Any help/pointers will be greatly appreciated. Thanks in Advance. This email sent to greg(a)kinostudios.com This email sent to site_archiver(a)lists.apple.com

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Re: Placing Kext at custom location instead of /System/Library/Extensions
by Boris Remizov 07 Dec '07

07 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:cc:message-id:from:to:in-reply-to:content-type:content-transfer-encoding:mime-version:subject:date:references:x-mailer; bh=2lTWhZk0zUSVPh4D1amee5RVX2+1gJFirfAMGe1QWXs=; b=h36NqpuGkvr7ZkmlTCO6NBDz8eb/g91jfzxyPicRWym1aqQs+DMf1IidvACU7l+ZvAV8TedOk/sm+EzpUzJx61nzAUcXS+JkWCFVJohfDG5TB9UCnZUeWsQwJfRl+ZvFDlkPrbCR59pIAlrZdETtydg6vCTekbRwAiaXj9Z8oRk= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=cc:message-id:from:to:in-reply-to:content-type:content-transfer-encoding:mime-version:subject:date:references:x-mailer; b=YsZZYBISTU3vYcllUaDQtmH+pLXQgg7gH6epx+MtpJ8D/Oxpe6FLpJcqrcMFOmSlO3R0AogrPFW4UbrIS+K9NAYkiUEnThAch8fi4qLULo1G50urQqiK/oV+KBh0YIG3RbianqumyVGE1CgpBTEDBRjX0dB2jtW4V8jNnQwW7fA= On Dec 7, 2007, at 10:43 AM, JanakiRam wrote: Hi All, _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… Hello, You may load your kext from startup item, so in this case you may place the kernel extension in any folder/bundle you want. I've developed a kext for my product . To have more control on loading the kext (after login) , i'm planning to place it at custom location ( /opt/myproductfolder) instead of /System/Library/ Extensions. Can any one point out the pros & cons for the location change ? Any help/pointers will be greatly appreciated. Thanks in Advance. -JanakiRam. This email sent to site_archiver(a)lists.apple.com

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Placing Kext at custom location instead of /System/Library/Extensions
by JanakiRam 07 Dec '07

07 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:mime-version:content-type; bh=IH+QHoO7c/q5aNtNB2BYpDQVFSEmr+4jA+9cRC3mJKI=; b=JwsQWzSOoHVxHerlUGj4AOI2g3m1KoHDWWWNbETMcSn7SKL0b62T1VjRIqqRM2ThUkLvOnlnk+JlWmDruLdLXnPuUzPHkITo7xDndCYSGiG4O37tHRFvsDWMhpPBX6uGXdgSYh00Y8eu9KrciUqQTLAmO4QG1CDonQMMCtIfJVI= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type; b=x5ccENQ6JaWm7mditLUJ4dDOdf+H6mZhygaNPdIaJoFYg5nNiL08KdKZ7e2CCltYwUlGWXUkZrB4XEdu1NHh7tebsOl2dg5WxHp42oTRrtrC3N32bfs5XTsTHSpWSXKWqbyTWByMfFod0zu0i0bj/bXc1Hnr6wsY68U8+VGevnc= _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Checking if a file exists from the kernel
by Michael Smith 07 Dec '07

07 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Dec 5, 2007, at 10:41 AM, David Rose wrote: You don't want to do this. = Mike _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I would like to know if it is possible to check if a file exists from a kernel extension. The reason I am interested in doing this is because I am creating a device in the /dev directory. Under Tiger this works fine, but in Leopard my device name is truncated at the / using the devfs_make_node function. Firstly, you shouldn't be trying to make directories in devfs. As recently discussed here, it doesn't work too well. Secondly, you should be deciding beforehand whether you are running on a kernel that will give you problems by looking at the various versioning information available to you, and doing the right thing up front. This email sent to site_archiver(a)lists.apple.com

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Re: Newbie Questions
by Michael Smith 07 Dec '07

07 Dec '07

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Re: silly Kext naming question
by mm w 06 Dec '07

06 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=C228O67ZC/ps+I5LTMrwSBbsctHvsoxKkwAOWvt3ElM=; b=gN3HBc6r/WiD2y6eQG0kjMp/dZVJg2YRIGO7mvpf2K2jvzNrFE/XraWg/kzUNPJBTjGHf+uKE7Zp7q4/8DXn8oCkkDn9/9X7ggpqN+IOdnbyBu2BHekiOId0s3mCPRJvzaP8JnZt2OH+uW1wuDDehAHy6Qk5HhVOUnqhA/0KNoc= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=r+NgSTnomGrApVoCBtBRoU1nAa8RqOqG+h+UROnU9A3e3aDX4pMNV3UUBqolaMspx40XkHjB2WCAKCXtW4mQE3tmVhOFogfkK40cksOjaNsQIAyqHeFlCVEI5VtLEUnfMPpVZ4o2bD7Cg7Ve7vgDs++avJjb3kmsFuds8u7UHEw= Hi, i think you are mixing the Identifier name and the filesystem name Cheers ! On Dec 6, 2007 2:48 PM, Rick Macklem <rmacklem(a)uoguelph.ca> wrote: > This is a bit silly, but I thought I'd ask in case someone cared? > > In "Kernel Extension Concepts", it suggests a name of the form: > <dns.domain>.kext.<name> for example ca.uoguelph.kext.newnfs > but all the directory names in /System/Library/Extensions end in .kext. > > Is it normal to have ca.uoguelph.kext.newnfs in the Kext bundle, but > call the top level directory something like ca.uoguelph.newnfs.kext? > > Thanks for any comments, rick > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/darwin-kernel/openspecies%40gmail.com > > This email sent to openspecies(a)gmail.com > -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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silly Kext naming question
by Rick Macklem 06 Dec '07

06 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com This is a bit silly, but I thought I'd ask in case someone cared? In "Kernel Extension Concepts", it suggests a name of the form: <dns.domain>.kext.<name> for example ca.uoguelph.kext.newnfs but all the directory names in /System/Library/Extensions end in .kext. Is it normal to have ca.uoguelph.kext.newnfs in the Kext bundle, but call the top level directory something like ca.uoguelph.newnfs.kext? Thanks for any comments, rick _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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sysctl
by mm w 06 Dec '07

06 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; bh=Uzm2w3fp7G5psbFHQlREIiGfelpf+fS4q2378hQB8e0=; b=Atmz55be23Q6Oklf2iZAkpLSf62uTjIrzY59sIAK31RceBJTIZfZMNxZCoukUx9J365OtU5dGtCE2cMI0qM1x5kiJ17D0Ka59gYLwgbEtcKHoa1HVtVleIXkJKMKwPhIq8HWOdCgjmOuZlMQPvCuFQaor1zpCCkCei7639bbgw4= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=D5iwTbvOEBjTOZPM2w58vh7BUBm51shwfx11i/CZhFynduJtrHjqqrHi7jM8leVM2Mw4v3+t8OjAgQImIbaHAcsmYfuL4UR3ZW+hOb3vd0VRloH63RtNzDFT8U3qiRNyqBtxZ9ZxvlJdpEnCJnsayQtokHhpyUtQZm6h7QoWmJo= hi, in the old interface, you should protect the code against this : sysctl_handle_int(oidp, -1, 0, req); //ptr value It's not my original code, I'm only refactoring and debuging (on demand, you should 've taken the Money Toombs :) ), anyway, I corrected this at the handler level (one of the wonderful things i discovered in this code), i know it should be better to use the new interface. Best Regards -- echo zapydapntpd.rxltw@nzx | tr a-z@. p-za-o.@ _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Checking if a file exists from the kernel
by Shantonu Sen 05 Dec '07

05 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Shantonu Sen ssen(a)apple.com Sent from my Mac Pro On Dec 5, 2007, at 3:42 PM, Terry Lambert wrote: -- Terry nm -pg /mach_kernel | grep VNOP Cheers! -mmw Hi, Thanks, David Rose _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/openspecies%40gmail.com This email sent to openspecies(a)gmail.com -- echo zapydapntpd.rxltw@nzx | tr a-z@. p-za-o.@ _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/tlambert%40apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/ssen%40apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I'm not sure how post-mortem analysis really helps. What is your workaround that you would use? Not use a nested devfs node? You should do that all the time if that's the case and you have that code working. Depending on what kind of driver you are, you should keep in mind that it may not even be possible use the VFS KPI to access your devfs node by path. You can publish devfs nodes any time after the VFS subsystem has initialized, however you can only do lookups of /dev/foo after the root filesystem has mounted, and only then after the kernel has mounted devfs on /dev. If you are a kext loaded into the kernelcache, you may be probed and started far before this. Alternately, use the darwin version which was discussed last wee to decide how you are going to code your code. On Dec 5, 2007, at 12:04 PM, mm w wrote: On Dec 5, 2007 10:41 AM, David Rose <david.rose43(a)yahoo.com> wrote: I would like to know if it is possible to check if a file exists from a kernel extension. The reason I am interested in doing this is because I am creating a device in the /dev directory. Under Tiger this works fine, but in Leopard my device name is truncated at the / using the devfs_make_node function. Calling devfs_make_node with the path "direct/file" results in the node "/dev/direc/file" being created on Leopard and "/dev/direct/ file" on Tiger. I would then like to check for the existence of /dev/ direct so that I know If I have to code for a work around in my driver. The open or stat call does not seem to be available to my kernel extension. ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ This email sent to tlambert(a)apple.com This email sent to ssen(a)apple.com This email sent to site_archiver(a)lists.apple.com

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