site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com -josh On Dec 5, 2005, at 1:30 PM, Christopher Vitale wrote: Hello List, I have a question about socket creation in 10.4.3. Thanks, vitale _______________________________________________ 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/jgraessley%40apple.com _______________________________________________ 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... This email sent to site_archiver@lists.apple.com What type of socket are you creating? What gets passed in so sock_socket for domain, type and protocol? Adding to the list of protocols by registering a new protosw or domain structure is not supported. The locking model has not been documented. You can arrive at socreate by calling the kpi sock_socket, or from the userland syscall socket. Regardless, socreate calls pffindproto or pffindtype. These domain functions both assert that nobody else is holding a certain lock. How is this guaranteed? There isn't even a funnel associated with the socket syscall in syscalls.master. I looked around the source for a while but nothing jumped out at me. I'm interested because I've got a kext that creates a connection via sock_socket. When I call sock_socket while other (userland) sockets are being created I'll occasionally die a horrible death on the pffindproto lock assert. I'll only create a single connection for the life of the kext. Does socket creation in the kernel bypass synchronization at a higher level? Also, the socket I create is a system socket to another kext. Is this an appropriate way for kexts to share information? I take the necessary precautions like not allowing the server kext to unload while connected, forcing the client kext to disconnect when unloaded, etc. This email sent to jgraessley@apple.com smime.p7s