Dynamic device management with Udev, HAL, and D-Bus
Just a couple of years ago, configuring new hardware on Linux was a daunting task and just one more reason for newcomers to keep clear. Now, Linux offers convenient device management that provides trouble-free, dynamic handling of devices plugged in at run time – including WLAN sticks, digital cameras, and even camcorders. Linux can listen on interfaces such as Bluetooth and Firewire and, if necessary, not only integrate a device you plug in, but launch the matching application as well.
Fortunately, the trend in recent months has been toward standardizing the underlying technologies. Udev has already clearly ousted its predecessor, Devfs, and found its way into the Linux kernel. Now the Freedesktop.org-sponsored team of HAL and D-Bus is establishing itself in the face of competition from the previous Gnome and KDE favorites, Corba and DCOP.
This merge has greatly improved communications between the two desktop environments. Gnome already has a mature front end for dynamic device management with Gnome Volume Manager and related tools. KDE is following suit after considerable restructuring of its libraries in version 4.
The KDE Solid hardware library adds a new and powerful framework to make hardware management on KDE easier than ever. In the months to come, you can look forward to more dynamic device management fireworks.
Short form of User Event. This means a notification event from the kernel to programs in userspace. This memory area, which is separate from the kernel space, is populated by normal programs and non-kernel subsystems. The Udev subsystem runs in userspace.
A virtual filesystem that was introduced with kernel version 2.6. It is normally accessible under /sys and makes device and driver information defined in the Kernel Device Model, the kernel's internal device database, available to programs in userspace.
Short for Interprocess Communication, a method of communication and data exchange between processes on the same computer.
- Udev: http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html
- HAL: http://www.freedesktop.org/wiki/Software/hal
- Freedesktop.org: http://www.freedesktop.org/wiki
- D-Bus: http://www.freedesktop.org/wiki/Software/dbus
- Corba: http://de.wikipedia.org/wiki/CORBA
- DCOP: http://developer.kde.org/documentation/other/dcop.html
- DCOM for programmers: http://msdn.microsoft.com/en-us/library/ms809311.aspx
Symantec says Linux-Darlioz burrows in through PHP.
Dell renews its quest for the ultimate developer machine.
Innovative back door looks like normal SSH traffic.
One of CeBITs most successful forums opens the new year with a new name. The popular Open Source Forum continues in 2014 under the name Special Conference: Open Source. This year, the forum will be bigger and offer a wider range of possibilities for sponsors.
New release offers better graphics drivers and expands filesystem support.
New mail protocol will shut out the NSA and prevent snooping on metadata.
A new web application helps users visualize distributed denial-of-service attacks.
Ubuntu 13.10 takes a step toward convergence, with lots of mobility, but Mir only partly here.
Galileo board is targeted to embedded developers and educational institutions.