Paul proposed implementing a syscall as a first exercise. I am digging a little myself and found that most online documents (including the textbook) are not up-to-date with 2.6.16. So I am trying to document a little bit of my own.

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I took the job of developing project ideas for cs411, which is basically a Linux kernal hacking class. Currently what I have come up with is a tar file system. The implementation would take a tar file and make a file system out of it. I am currently thinking about have three steps toward the final program.

In step 1, we would get familiar with VHS interfaces and data structures. It’s probably a good idea to implement a very simple filesystem, say, containing only one file and its name and content are hard coded.

In step 2, we would try to hack a little on tar file format (which should be pretty straight-forward) and make a read-only tar filesystem.

In the final step, we would try to make it writeable as well. This might be too complicated since tar is intended to be linearly accessed rather than randomly accessed.

I wanted to add a footnote to the chapter title in my thesis. You might think this would work:

\chapter{blah footnote{blah}}

But it actually does not. I figure this out:

\chapter{blahprotectfootnote{this is a footnote.}}

But this also puts the footnote in the TOC. If this is not what you want, you might do this:

\chapter[blah]{blahprotectfootnote{this is a footnote.}}

我的背景：PhD in CS，擅長開發，不擅長research，有一些paper，都不太強，也不算特別差。對research缺乏激情，所以選擇工業界。如果你的背景相差太遠，有些東西可能不適用，但是很多還是相通的。偶運氣還可以，第一個on site interview就給了offer，所以更多的是經驗，不太有教訓。題目就叫effective job hunting吧。側重interview。

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