site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com Hi John, comments in-line. Best regards Michael On Jun 6, 2008, at 5:27 PM, Josh Graessley wrote: On Jun 6, 2008, at 10:02 AM, Rick Macklem wrote: On Fri, 6 Jun 2008, Michael Tüxen wrote: Dear all, in an NKE I'm using code like TAILQ_FOREACH(ifn, &ifnet, if_list) { /* Do something with ifn */ } and need to protect it by ifnet_head_lock_shared(); TAILQ_FOREACH(ifn, &ifnet, if_list) { /* Do something with ifn */ } ifnet_head_done(); but the kextload reports kld(): Undefined symbols: _ifnet_head_done _ifnet_head_lock_shared As OSBundleLibraries I use com.apple.kernel. I do know that I'm using unsupported API... but is there a way to use the mutex routines? -josh _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... To the best of my knowledge, you can't link to those routines, because they aren't in the mach_kernel's symbol table. However, so long as you abide by the terms of the APSL, you can crib them from the sources and put them in your Kext. (I'm assuming you already understand the risks associated with doing this, such as "Apple could change them for any release and you code will then be broken".) If you download xnu-1228 sources, look in bsd/net/dlil.c for them. You can also bypass the safety on your food processor and get it to run while the lid is off and reach your hand in but I wouldn't recommend it. 1) In order to get your kext to link, you'll have to declare a dependency on the exact version of the kernel, which means your kext will only work with one specific version of Mac OS X. Every software update will break your product. I know! 2) There's a better way. There are a whole set of KPIs to do whatever you are likely to be trying to do. They will take and drop any appropriate locks for you. I'm using KPIs were possible. However, implementing a transport stack is currently not possible with using only supported KPIs... That is why I have build the NKE for each version of the OS (more precisely: change the Info.plist file). Major changes to the code where only necessary from Panther -> Tiger -> Leopard... This email sent to site_archiver@lists.apple.com