Date: Tue, 25 May 2010 13:02:35 +0400 From: Dmitry Krivenok <krivenok.dmitry@gmail.com> To: freebsd-hackers@freebsd.org Subject: select/poll for sockets in kernel space Message-ID: <AANLkTimTGjiEolesEOMN6Zdo-wjmuT5nFDzbHYk_-sI1@mail.gmail.com>
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Hello Hackers! I'm developing a module for FreeBSD-8 and encountered the problem with polling sockets. I know that FreeBSD-8 kernel provides 3 interfaces for polling (kern/sys_generic.c): 1) kern_select 2) poll 3) selsocket I cannot use first two interfaces because I have an array of sockets (struct socket) created using socreate, i.e. I don't have file descriptors. I also cannot use selsocket because it doesn't tell me which events fired and takes only one socket (but I have an array of sockets). The problem is that the module I'm developing should work on unmodified FreeBSD-8 kernel. So I cannot just add new functionality suitable for my task in kern/sys_generic.c. I also cannot implement such functionality in the module itself because select/poll implementation is hidden and only limited number of interfaces is available to the rest of the kernel (which is generally good, but not in my case :)). Is it possible to solve my problem using existing kernel functionality? Any suggestions are welcome! Thanks in advance! P.S. I know about kqueue, but I have to use select/poll is this task. -- Sincerely yours, Dmitry V. Krivenok e-mail: krivenok.dmitry@gmail.com skype: krivenok_dmitry jabber: krivenok_dmitry@jabber.ru icq: 242-526-443
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