April 2005 - Darwin-kernel - lists.apple.com

Cann't make connection to a graphics IOService "IOFramebuffer"
by Amit Gupta 15 Apr '05

15 Apr '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com I am trying to execute the code written below. Here IOServiceOpen is giving error -536870203 Can any one tell the reason for this error. kern_return_t err; mach_port_t masterPort; io_iterator_t itThis; io_service_t service; io_connect_t connect; Thanks Amit _______________________________________________ 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.… err = IOMasterPort(bootstrap_port, &masterPort); err = IOServiceGetMatchingServices(masterPort, IOServiceMatching("IOFramebuffer"), &itThis); service = IOIteratorNext(itThis); err = IOServiceOpen(service, mach_task_self(), kIOFBServerConnectType, &connect); This email sent to site_archiver(a)lists.apple.com

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[Repost] Tiger and NDAs
by Quinn 15 Apr '05

15 Apr '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Greetings All <http://developer.apple.com/technicalsupport/index.html> Sorry. It's not my fault. Blame the lawyers. Share and Enjoy -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ 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 is a friendly reminder that Tiger is still under NDA, and will remain so until the product is released (29 Apr). If you have access to Tiger seeds, please abide by the terms of your NDA and keep any confidential information to yourself. Currently there is no discussion forum for Tiger kernel development because the NDA specifically excludes you from discussing Tiger with other developers, even if you know they have access to the Tiger seeds. >From time-to-time Apple folks will describe Tiger features. Most of what we talk about is covered on the public web site, and thus is not confidential information. In other cases we must make a difficult judgement call about what we can say without getting into trouble. If you desperately need to have your Tiger questions answered before Tiger ships, your only recourse is to ask DTS. This email sent to site_archiver(a)lists.apple.com

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Re: sysctl dependencies not working in Tiger?
by Dean Reece 15 Apr '05

15 Apr '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hope this helps, - Dean _______________________________________________ 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.… On Apr 14, 2005, at 10:26 PM, bjk02(a)hampshire.edu wrote: I'm trying to develop an updated version of a kext in time for Tiger's release (I am using build 8A420), but I can't get kextload to load it. Every time, it reports that any sysctls I try to register are undefined. Specifically, the error everytime when running kextload -t foo.kext is: kextload: extension foo.kext appears to be valid kld(): Undefined symbols: _sysctl__children _sysctl_handle_int _sysctl_register_oid _sysctl_unregister_oid kextload: kld_load_from_memory() failed for module /Users/username/project/ build/foo.kext/Contents/MacOS/foo kextload: a link/load error occured for kernel extension foo.kext load failed for extension foo.kext I even tried creating an entirely new kext project in Xcode 2.0, and added a few sysctl_register_oid calls and it stopped working. info.plist includes com.apple.kernel.libkern in OSBundleLibraries, so this ought to work. The four symbols listed above are only exported from bsd, not libkern, so you'll need to include a dependency on "com.apple.kpi.bsd" v8.0. Note that the "com.apple.kpi.*" interfaces may not be used in conjunction with the "com.apple.kernel.*" interfaces, so you'll need to change from "com.apple.kernel.libkern" to "com.apple.kpi.libkern" v8.0. When in doubt about which symbols come from where, cd into /System/Library/Extensions/System.kext and run "nm -m" on the mach-o binaries you find in there. This email sent to site_archiver(a)lists.apple.com

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sysctl dependencies not working in Tiger?
by bjk02＠hampshire.edu 15 Apr '05

15 Apr '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Internet Messaging Program (IMP) 3.1 I'm trying to develop an updated version of a kext in time for Tiger's release (I am using build 8A420), but I can't get kextload to load it. Every time, it reports that any sysctls I try to register are undefined. Specifically, the error everytime when running kextload -t foo.kext is: kextload: extension foo.kext appears to be valid kld(): Undefined symbols: _sysctl__children _sysctl_handle_int _sysctl_register_oid _sysctl_unregister_oid kextload: kld_load_from_memory() failed for module /Users/username/project/ build/foo.kext/Contents/MacOS/foo kextload: a link/load error occured for kernel extension foo.kext load failed for extension foo.kext I even tried creating an entirely new kext project in Xcode 2.0, and added a few sysctl_register_oid calls and it stopped working. info.plist includes com.apple.kernel.libkern in OSBundleLibraries, so this ought to work. Does anyone know what's wrong? - Brian _______________________________________________ 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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Etiquette Reminder!
by Godfrey van der Linden 14 Apr '05

14 Apr '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com G'day All, I'm not sorry for the cross post. Recently my unsolicited email load has become unacceptable. Godfrey van der Linden _______________________________________________ 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.… It looks like I need to remind the lists that although I often respond to questions on Darwin and I try to be as helpful as possible; I really can NOT respond to email questions that are sent directly to me. This email sent to site_archiver(a)lists.apple.com

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Re: Processes
by Eric Long 14 Apr '05

14 Apr '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Microsoft-Entourage/11.1.0.040913 > I forget the exact details, but it's something to do with getting the > group-leader pid I think. The log-in session will be a group leader. > You need to find which one is at the "console" (not THAT console) and > which ones are remote logins. > > Start by having a look at man page for "ps" - I think that will explain > most of it. Thanks. Actually, this turned out to be much simpler to deal with than I was making it out to be. I got it stuck in my head that I had to identify a SecuritySessionId. But for the particular need I have, in this case, I can just look at a process's kinfo_procP->kp_eproc.e_pcred.p_ruid to see if it matches the current user. Eric _______________________________________________ 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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Disk Image Plugin
by Erich Ocean 14 Apr '05

14 Apr '05

site_archiver(a)lists.apple.com Delivered-To: Darwin-kernel(a)lists.apple.com On Fri, 14 Nov 2003, Thorsten Sprenger wrote: Any help/pointers is appreciated. Best, Erich _______________________________________________ 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.… Is it possible do write some sort of Disk Image Plugin ? I want to develop a special image format which uses some sort of redundancy. I would prefer to use a plugin - if possible - instead of writing a KEXT which handles my special partition type. I'm looking for documentation as well. I see that VirtualPC provides a disk image plugin, so there must be at least *some* support for doing that sort of thing. I think I could keep my code out of the kernel if I could write such a plugin. This email sent to site_archiver(a)lists.apple.com

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Re: Processes
by Peter Lovell 13 Apr '05

13 Apr '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Apr 13, 2005, at 7:09 PM, Eric Long wrote: Hi, I have a program that I want to look at the process list and find a particular process by name. The process I am looking for runs as root. Thanks, Cheers.....Peter _______________________________________________ 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.… If multiple instances of the process are running in separate log-ins, I see the other instances. How can I determine if a particular process running as root is running from the current user's log-in session? Eric Hi Eric, I forget the exact details, but it's something to do with getting the group-leader pid I think. The log-in session will be a group leader. You need to find which one is at the "console" (not THAT console) and which ones are remote logins. Start by having a look at man page for "ps" - I think that will explain most of it. This email sent to site_archiver(a)lists.apple.com

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Processes
by Eric Long 13 Apr '05

13 Apr '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Microsoft-Entourage/11.1.0.040913 Hi, I have a program that I want to look at the process list and find a particular process by name. The process I am looking for runs as root. If multiple instances of the process are running in separate log-ins, I see the other instances. How can I determine if a particular process running as root is running from the current user's log-in session? Thanks, Eric _______________________________________________ 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: Kernel stack size
by Carl Smith 13 Apr '05

13 Apr '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: AcVAKKGC8AAkxdLDTZiLxBpKERH3PQABOCMQ Thread-topic: Kernel stack size Hey Thanks Nikita, I did not know about the M_ZERO flag. I appreciate you taking the time to give us all that tip. Carl -----Original Message----- From: darwin-kernel-bounces+csmith=fortresstech.com(a)lists.apple.com [mailto:darwin-kernel-bounces+csmith=fortresstech.com@lists.apple.com] On Behalf Of Nikita Danilov Sent: Wednesday, April 13, 2005 8:59 AM To: Carl Smith Cc: darwin-kernel(a)lists.apple.com Subject: Re: Kernel stack size Carl Smith writes: > > OK let me try it another way. > > I have this structure declared as global: > Struct Frame_Data > { > void *buff1; > void *buff2; > void *buff3; > } > > Then I declare as a global: > > Int g_Array_Cnt = 0; > > struct Frame_Data my_data[50]; > > So in my kernel's init routine I do: > > While(g_Array_Cnt < 50) > { > if((my_data[g_Array_Cnt].buff1 = _MALLOC(1600, M_TEMP, > M_WAITOK)) != 0) > { > bzero(&my_data[g_Array_Cnt].buff1, 1600); > > if((my_data[g_Array_Cnt].buff2 = _MALLOC(1600, M_TEMP, > M_WAITOK)) != 0) > { > bzero(&my_data[g_Array_Cnt].buff2, 1600); > > if((my_data[g_Array_Cnt].buff3 = _MALLOC(1600, > M_TEMP, M_WAITOK)) != 0) > { > bzero(&my_data[g_Array_Cnt].buff3, > 1600); > } > else > // error handling > } > else > // error handling > } > else > // error handling This (after correcting obvious error pointed to by others in this thread) can be simplified to enum { FRAME_BUF_SIZE = 1600 }; my_data[g_Array_Cnt].buff1 = _MALLOC(FRAME_BUF_SIZE, M_TEMP, M_WAITOK | M_ZERO); my_data[g_Array_Cnt].buff2 = _MALLOC(FRAME_BUF_SIZE, M_TEMP, M_WAITOK | M_ZERO); my_data[g_Array_Cnt].buff3 = _MALLOC(FRAME_BUF_SIZE, M_TEMP, M_WAITOK | M_ZERO); M_ZERO automatically zeroes allocated space, and M_WAITOK is guaranteed to return non-NULL (or at least a _lot_ of places in core XNU code assumes it is.). Identical calls to _MALLOC can be further factored into special frame_alloc_buf() function. Nikita. _______________________________________________ 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/csmith%40fortresste ch.com This email sent to csmith(a)fortresstech.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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