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Kernel DBus Now Boots With Systemd On Fedora

Posted by timothy on from the trying-new-things dept.

An anonymous reader writes "Red Hat developers doing some holiday hacking have managed to get a bootable system with systemd + KDBUS on Fedora 20. KDBUS is a new DBus implementation for the Linux kernel that provides greater security and better performance than the DBus daemon in user-space. Systemd in turn interfaces with KDBUS for user-space interaction. Testing was done on Fedora 20 but the systemd + KDBUS configuration should work on any modern distribution when using the newest code."

4 of 341 comments (clear)

  1. Why, oh why? by Anonymous Coward · · Score: 5, Insightful

    Why do we need in-kernel DBUS implementation. And please don't tell me about performance, lot's of software with much higher performance requirements is more than happy in userland...

  2. More Bloat ? by fluffy99 · · Score: 5, Insightful

    Why is this NOT another example of kernel bloat, and the opposite direcion they should be heading (ie getting user stuff out of the kernel)? Seems like the primary use of D-BUS is for the desktop components, which already abuse/overuse inter-process communication. The "huge performance improvement" is only for those processes that shouldn't be abusing this anyway.

  3. Re: "Slashmirrored" by Desler · · Score: 5, Insightful

    Nope, it's because gotos are very nice for error handling over rats nests of if/else. Which is what its predominate use in the kernel is.

  4. Too much navel gazing by Sri+Ramkrishna · · Score: 5, Interesting
    Too much navel gazing about change. Here is the reason behind kdbus. Primarily it's for application sandboxing and making sure that a bad actor does not do something bad to something else. As GNU/Linux gets more popular, we want to be able to make sure that we can contain bad actors as much as possible. It's also a step in the direction to have a universal app spec instead of having to have each distro package the same damn app. I miean, how much duplicate work do you want to do? It makes it easier for people who write apps to have GNU/Linux as a target instead of having to pick the most popular distro at that point of time.

    http://lwn.net/Articles/551969/

    Linus is okay with it. Have to worry about Al Viro. :-)

    Here is an updated talk by Greg K-H that he gave on KDbus, he posted this about 3 days ago. https://github.com/gregkh/presentation-kdbus

    Let's stop all the FUD, and educate yourself on the reasons behind on this.