Monthly Archives: November 2010

3×3 Sudoku Puzzle Solver

Posted in kerneltrap.org on December 16, 2008 – 10:37am Back when I was in the last half part of my third semester of my undergraduate study, there was a fever among my classmates to solve Sudoku puzzles. I just tried … Continue reading

Posted in Personal Research, Sudoku | Tagged | 10 Comments

Fiddling with sys_call_table in Linux Kernel 2.6.21.5

Posted in kerneltrap.org on October 14, 2008 – 5:52pm A friend of mine would like to try to implement a new system call based on the example in Chapter 8 of Linux Kernel Module Programming Guide 2.6 Series in Linux … Continue reading

Posted in Hacking, Linux Kernel Module, Software | Tagged , , , , , , | 5 Comments

Computer Languages

Posted in kerneltrap.org on October 4, 2008 – 9:59pm In a book titled C How to Program by Deitel and Deitel, computer languages are classified into three types as follows: 1. machine language 2. assembly language 3. high-level language I … Continue reading

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The Development of Computers

Posted in kerneltrap.org on October 4, 2008 – 9:55pm Well, everything started with single-user batch processing system. In this system, a batch of jobs are queued to be processed by the system one at a time. The system itself is … Continue reading

Posted in Learning Experience, Operating systems | Tagged , , , | Leave a comment

Computer Subsystems – How Important I/O Is

Posted in kerneltrap.org on October 4, 2008 – 9:53pm I believe every new student studying Computer Science or Information Technology will be introduced to the sub-systems of computers, which are Input Unit, Output Unit, Arithmetic and Logic Unit, Central Processing … Continue reading

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Yahoo!’s Spam Filter Broke

Posted in kerneltrap.org on October 4, 2008 – 9:49pm I have my e-mail forwarding set up in FSF’s mail server to my account in Yahoo!’s mail server. I tune into several mailing lists, and I noticed that frequently the e-mails … Continue reading

Posted in E-Mail, Web Experience | Tagged , , , , , , | 1 Comment

How does the IPv4 Receiving Mechanism Assemble Fragmented Datagrams?

Posted in kerneltrap.org on October 4, 2008 – 9:26pm How does the IP receiving mechanism assemble fragmented datagrams? First of all, this writing is based on Linux kernel 2.6.21.5. When I looked into ip_frag_reasm() that was commented with /* Build … Continue reading

Posted in Hacking, Linux Kernel, Networking, Software | Tagged , | 2 Comments