Role-based Access Control in SELinux

Role-based access control is a general security model that simplifies administration by assigning roles to users and then assigning permissions to those roles. Learn how RBAC in SELinux acts as a layer of abstraction between the user and the underlying TE model, and how the three pieces of an SELinux context (policy, kernel, and userspace) work together to enforce the RBAC and tie Linux users into the TE policy.

Toshiba Quits HD-DVD ‘Format War’

Toshiba said Tuesday it will no longer manufacture HD-DVDs, effectively ending the long-running battle with the rival Blu-ray for a dominant high-definition format. Toshiba said it made the decision to cease developing, manufacturing, and marketing HD-DVDs after 'recent major changes in the market'. It promised to continue offering support and service for all 1.3+ million Toshiba HD-DVDs sold so far.

Fedora Developers on KDE4

"KDE 4 is seen by many to be the next big step on the free software desktop, while others think releasing 4.0 in its current condition was misleading and a mistake. Either way, it's an innovative release and inline with Fedora's goal of providing the latest and greatest free software it is set to be the default KDE environment in the next major release of Fedora. We caught up with two members of the KDE SIG to talk about the work they're doing to get it ready for release, their own opinions on the software and what they think about the progress made by Fedora in getting over its GNOME centric reputation."

Haiku at SCaLE 6x: Overall Impressions

Jorge G. Mare (Koki) has written down his thoughts on Haiku's presence at SCaLE 6x. "This past weekend Bruno G. Albuquerque, Joe Bushong and myself represented Haiku at the sixth Southern California Linux Expo conference, best known as SCaLE 6x, held on February 9 and 10 in the city of Los Angeles. This was the second year in a row that we organized a presence for Haiku at this event, and since we had so much fun last year, we were all looking forward to doing it again this time around."

Secret Recipe Inside Intel’s Latest Competitor

It works like an Intel chip, but looks like the Cell processor. That's one way of describing the energy-efficient multiple core processors being devised by secretive Montalvo Systems. The Santa Clara, Calif.-based company has come up with a design for a chip for portable computers and devices that - when finished and manufactured - will theoretically be capable of running the same software as chips from Intel or AMD.

Leopard’s Second Update Prompts a Second Look

"Apple recently released its second update to OS X 'Leopard', and the latest version of its shiny operating system is now numbered 10.5.2. When I reviewed Leopard two days after its initial release I called it the best operating system ever made for the vast majority of users. I think that's even more true now that 10.5.2 fixes some of the first-release glitches that annoyed me in 10.5 and in Apple's first, quick, bug-fix update 10.5.1."

‘Using the Mobile Web Is a Sticky Proposition’

GigaOM takes a look at the breathless posturing coming out of the Mobile World Congress about the sunny future of using mobile devices to use the Web, and examines it with some skepticism. The verdict: "There’s too much variation in operating systems and end devices." Because the platform situation is so balkanized, it's too difficult to build any kind of platform that will work consistently across mobile platforms.

Review: Microsoft’s Hyper-V

Jason Perlow takes a look at Microsoft's Hyper-V, and concludes: "Even though Hyper-V is still pre-1.0 code, I think Microsoft has done a bang-up job with its hypervisor, and it may just turn this Linux freak into a Windows 2008 junkie for running his own personal virtualization needs. While VMWare's ESX is still superior on a number of fronts, including its aforementioned VMotion technology and its more powerful cluster management tools, Microsoft has certainly sent a major warning shot across its bow and the bows of the respective Linux vendors, as well."

Exploring the Motivations Behind the Open Graphics Project

"Excitement in the Open Graphics community is quite high as it approaches its first production run of the FPGA-based 'Open Graphics Development' board, known as 'OGD1'. It will be available for pre-sale this month with the first units expected to ship soon thereafter. As an insider in this group, I had a unique opportunity to interview several of its members, including: Timothy Miller, the experienced hardware engineer who first started the project (as well as the company, Traversal Technology, which will produce and sell OGP designs), and Patrick McNamara, an interested amateur tinkerer who founded the Open Hardware Foundation."

SCO Revives with USD 100 Million Investment

Having almost disappeared completely late last year, SCO says it has been resuscitated by a new financing plan. Under the terms of the deal, Stephen Norris Capital Partners and "its partners from the Middle East" will supply up to $100 million, enabling SCO to reorganize and launch a new series of products. SNCP will gain a controlling interest in the company, and take it private, allowing it to slip out of Chapter 11 bankruptcy protection. Update: As part of the reorganisation, Darl McBride will be let go. Buried in the proposed MOU (Memorandum of Understanding) between Unix vendor and Linux litigator SCO and SNCP is the note that "upon the effective date of the Proposed Plan of Reorganization, the existing CEO of the Company, Darl McBride, will resign immediately."

Review: Vista SP1

eWeek takes a look at Vista's first service pack. "On the whole, Vista Service Pack 1, which becomes generally available in mid-March, is a fairly staid update with very little in the way of new features or cosmetic changes. SP1 consists of a rollup of Vista's first year of security and bug fixes, new support for a handful of emerging hardware and software standards, and an update to Vista's kernel and core systems that brings the operating system in line with Windows Server 2008, which was also recently released to manufacturing. SP1 also features a handful of performance improvements around file copy operations, which I was able to confirm during my tests in our lab." Concerning the file copy operations, Mark Russinovich has a detailed post about that one.

Measuring Ubuntu’s Boot Performance

"Last year leading up to the release of Ubuntu 7.04 and Ubuntu 7.10 we had published several articles looking at various aspects of this desktop Linux distribution. These articles had varied from looking at Ubuntu's power consumption for the past six major releases to presenting the visual history of Ubuntu and how its graphics have evolved since Ubuntu 4.10. With Ubuntu 8.04 shipping in just two months, we are once again looking at Ubuntu from several points of view. In this article, we are looking at Ubuntu's boot performance for the past five releases through the use of Bootchart for measuring its boot time, disk throughput, and the running processes."

10 Mistakes in Icon Design

"It is much easier to criticize somebody else's work than to create something cool yourself. But if you apply a systematic approach to criticizing, make a numbered list and prepare illustrations, it will be regarded as a fully-fledged analysis! In my opinion, icon design is undergoing a transitional period. On the one hand, screen resolutions are increasing, hence enhancing icons. On the other hand, we still have good old pixels. Icons sized 16x16 and even smaller are still widely used. And so, here are the most commonly observed mistakes in icon design."