On Fri, Nov 08, 2002 at 06:44:24PM -0000, Pedro Nunes da Costa wrote: > I'm trying to write a module that searchs for a pattern in kernel code. About a year and a half ago, I successfully converted the libpcre "perl compatible regular expression" library to run in kernel space. The conversion in and of itself wasn't too rough, though it was my first real experience with the kernel, so the other learning experiences I had along the way (think: system include directories :) added to the complexity significantly. Of course, today, I look back and wonder about its stack usage. I never pushed the library very hard, so it is possible that under real use, it would fall apart with excessive stack use. But, the code was clean, easy to read, and was made quite easier by having a malloc() function pointer for easy replacement. :) Anyway, I'd suggest not using the expression compiler in the kernel -- only the matching. (And even then, you will probably be better off to even do the matching in userspace through a pipe or character device or filesystem or something ... I did it in part as a learning exercise.) -- Outlook users: please do not put my email address in your address book. This way, when you get infected with a virus, my address won't appear in the From: header. Thanks.
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