IRC, freenode, #hurd, about 2010-08/2010-09

<neal> check this out:
<neal> someone is working on implementing dbus in linux
<neal> linux finally gets mach ipc ;-)
<marcusb> it's old news though, unless there is an update
<marcusb> and I think it was only the client?
<neal> youpi : someone is adding dbus ipc to the linux kernel
<neal> marcusb: I just heard about it.
<youpi> (it's crazy how this drives backward compared to a hurdish approach)
<youpi> what is the motivation for moving to the kernel?
<neal> context switch overhead
<azeem_> they wanna use it to talk to device drivers? :)
<kilobug> well, they did that with the in-kernel web server, but they
  abandonned it later on
<neal> azeem: I don't think so.
<neal> dbus in the kernel is actually good for the Hurd as dbus IPC is
  basically neutered Mach IPC
<marcusb> I don't think anybody wants to put the dbus server in the kernel
<neal> well, there is at least one person
<marcusb> maybe this is a different news from the one I read
<neal> Alban Crequy (albanc) is working out.  He works for collabora, fwiw

http://alban.apinc.org/blog/2010/09/15/d-bus-in-the-kernel-faster/

<marcusb> what I read was about hal etc
<marcusb> so that you don't need a user space daemon to glue the kernel to the
  dbus world
<neal> I don't think that is what he is talking about
<marcusb> I can't find it anymore though.  I mentioned it in this channel at
  the time though, so it should be in the backlog
<marcusb> neal, yeah could very well be a separate thing
<marcusb> neal, dbus does have marginal support for fd passing though, and some
  attempts on the mailing list to make "fds" an official type in the message
  failed (as far as I could see, I didn't read the whole discussion)
<marcusb> so no mach ipc just yet
<neal> wrong
<neal> FD handling is in 1.4
<neal> type o, if I'm not mistaken
<marcusb> then the discussion moved on from initial rejection
<neal> no, 'h'
<marcusb> I'm out of date by two months
<marcusb> ok
<guillem> neal: AFAIR Marcel Holtmann talked about dbus in-kernel several years
  ago, but he never ended up implementing it, or there were rumors he had
  private "working code"

Related Mailing List Discussion
- [PATCH 0/5] RFC: Multicast and filtering features on AF_UNIX, 2010-09-24

2013-02

AF_BUS, D-Bus, and the Linux kernel, Greg Kroah-Hartman, 2013-02-08.