April 2003 - Darwin-kernel - lists.apple.com

RE: Building KEXT with make
by Stockhoff, Cory 28 Apr '03

28 Apr '03

> We're starting to port a kernel module to Mac OS X that has > been previously > ported to several UNIX platforms and Windows. For _all_ > platforms we use > make to build the software and packaging, which makes it much easier > for different developers (who are located in different > countries etc) on > different > platforms to make changes/reorganise etc, especially when none of the > developers have direct acceess to build machines for all platforms. We have the exact same situation. We tackled it in several different ways as we gained some experience with OS X: 1) Use Project Builder, then copy and paste the compile and link commands it uses from its log. 2) Recognize that PB uses Jam, and create your own calls to Jam, which in turn calls the compile and link commands. We left the organization of resources, such as .pbx and .plist files, alone so that we may continue to use PB if desired. We also added some niceties into our makefiles to edit the .plist files at compile time to keep the KEXT's version numbers up-to-date. Hope this helps. Cory Stockhoff cstoc(a)netlock.com _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Building KEXT with make
by Godfrey van der Linden 28 Apr '03

28 Apr '03

You shouldn't have to much problems with the conversion. The difficulty is getting the build flags right. I suggest you setup a baby kext project and copy the build flags from the 'pbxbuild' output. Remember the layout of the kext is important too. Godfrey At 17:06 +1000 03-4-26, David Chatterton wrote: We're starting to port a kernel module to Mac OS X that has been previously ported to several UNIX platforms and Windows. For _all_ platforms we use make to build the software and packaging, which makes it much easier for different developers (who are located in different countries etc) on different platforms to make changes/reorganise etc, especially when none of the developers have direct acceess to build machines for all platforms. Clearly there is an emphasis to use Project Builder for all Mac OS X software, including kernel extensions, and we have nothing against the tool, however the rationale for using make still holds for this port. Does anyone have experience with building a kernel extension using Make? If not, what are the likely issues that we will encounter? _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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VFS unloading issue
by Wally Crooze 28 Apr '03

28 Apr '03

Hello, I have been playing around with a couple of file-system kexts to understanding the workings of MacOSX VFS. I found that I could *kextunload* a mounted filesystem. Extra research indicated that, even though vfs_refcount is maintained correctly by the vfs infrastructure, the vfsconf_del doesn't actually check the value before deleting the vfsconf! I also noticed that, unless I maintained my own pointer, there was no interface to retrieve the vfsconf. Is there a reason for this... or is it just an incomplete implementation (or bug)? -- Wally Crooze +-------------------------------------------------------+ | ,-_|\ Wally Crooze <wallycrooze(a)pobox.com> | | / \ | | \_,-._/ | | v | +-------------------------------------------------------+ _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: AppleShare/IP and Timbuktu issues with my VPN NKE
by Quinn 26 Apr '03

26 Apr '03

At 10:58 -0600 25/4/03, Michael Birdsong wrote: Could anyone out there give me some quick reference URL's about the way AppleShare/IP and Timbuktu may include IP addresses in the IP data (or TCP data) portion of their communications? I don't know about TBT. The TBT developers hang out on the MacNetworkProg mailing list, so you if repost there you might get an answer from them. <http://www.lists.apple.com/macnetworkprog> For AppleShare, the protocol specification is on the Apple developer web site. <http://developer.apple.com/techpubs/macosx/Networking/AFP/index.html> The most likely thing to cause trouble is the FPGetSrvrInfo, which can contain embedded IP addresses. S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Simplest IPC
by Quinn 26 Apr '03

26 Apr '03

At 10:57 +0300 26/4/03, Oleksiy Gorelov wrote: Could some body explain, how two independent applications on the sam host can establish connectin for IPC. To get a meaningful answer you really need to give more details about your requirements. How much information do you need to pass between your client and server? The total size of data passed between the two and the expected number of requests per second is both important. Do you have lots of different types of client/server requests (and thus would like RPC parameter marshalling), or just a single one. What does the main event loop of your server look like? There are /many/ IPC mechanisms on Mac OS X, so choosing the right one requires some analysis. At second, I read kernel_principles and kernel_interfaces pdfs. And I dont understand how one task can send port right to other task if it does not have already send right for one port of the task? Does it mean that IPC can be established only between paren and child processes? For Mach IPC, the server typically registers with the bootstrap server and the client looks up the server via bootstrap server calls. See /usr/include/servers/bootstrap.h for details. At last, I can use POSIX sokets in AF_UNIX mode, but Is it efficiently implemented on OS X? Do you want to know whether it's efficiently implemented, or whether it's implemented efficiently enough for your needs? I'm presuming the latter, hence my first question. We can't tell you whether it'll meet your needs unless you tell us what they are. S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Simplest IPC
by Oleksiy Gorelov 26 Apr '03

26 Apr '03

Could some body explain, how two independent applications on the sam host can establish connectin for IPC. At first, I try to use msgget, msgsend, msgrcv... But under OS X it returns "not emplemented" error. I look at Darwin sources. There are two version of this functions. One of this versions looks like that it is functioning properly. Maybe I neet link some library with right version of this functions? At second, I read kernel_principles and kernel_interfaces pdfs. And I dont understand how one task can send port right to other task if it does not have already send right for one port of the task? Does it mean that IPC can be established only between paren and child processes? At last, I can use POSIX sokets in AF_UNIX mode, but Is it efficiently implemented on OS X? Thanks, Oleksiy Gorelov _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Building KEXT with make
by David Chatterton 26 Apr '03

26 Apr '03

We're starting to port a kernel module to Mac OS X that has been previously ported to several UNIX platforms and Windows. For _all_ platforms we use make to build the software and packaging, which makes it much easier for different developers (who are located in different countries etc) on different platforms to make changes/reorganise etc, especially when none of the developers have direct acceess to build machines for all platforms. Clearly there is an emphasis to use Project Builder for all Mac OS X software, including kernel extensions, and we have nothing against the tool, however the rationale for using make still holds for this port. Does anyone have experience with building a kernel extension using Make? If not, what are the likely issues that we will encounter? Thanks, David Chatterton david.chatterton(a)adacel.com _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: [OT] boot in console mode (verbose mode)
by Paul Ripke 26 Apr '03

26 Apr '03

Or: sudo nvram "boot-command=0 bootr -v" in the case of OFW v2. On Saturday, Apr 26, 2003, at 00:15 Australia/Sydney, Jim Riggs wrote: sudo nvram boot-args=-v This changes the setting in NVRAM. - Jim -- Paul Ripke Unix/OpenVMS/TSM/DBA 101 reasons why you can't find your Sysadmin: 68: It's 9AM. He/She is not working that late. -- Koos van den Hout _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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"disk1s9: 0x3 (UNDEFINED)" message?
by Steven Bytnar 25 Apr '03

25 Apr '03

Apr 24 11:25:26 jsg3-10 mach_kernel: disk1s9: 0x3 (UNDEFINED). Apr 24 11:34:00 jsg3-10 mach_kernel: disk1s9: 0x3 (UNDEFINED). What does this message mean? Which kext is printing this message? The last reboot was on: Apr 18 14:44:58 jsg3-10 reboot: rebooted by sbytnar I leave the machine going 24x7. disk1s9 is a journaled HFS+ file system on a 120GB master IDE drive, on bus ide@20001. Each time this message appeared, a long delay of around 2 minutes was observed. After 10 minutes and 4 printouts of the message, the machine stopped being usable (all disk activity halted) and had to be power cycled. I left it powered off for a few hours and booted into 9.2.2. No SMART errors were reported. Booted back into 10.2.5, and it has been fine since. Thanks, --Steve _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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AppleShare/IP and Timbuktu issues with my VPN NKE
by Michael Birdsong 25 Apr '03

25 Apr '03

Could anyone out there give me some quick reference URL's about the way AppleShare/IP and Timbuktu may include IP addresses in the IP data (or TCP data) portion of their communications? I have received a report that my VPN NKE is not properly handling such traffic. Thanks, and my apologies if the answer to this question is too obvious. michael --- birdsong(a)cisco.com _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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