> I was recently trying a few Loadable Kernel Modules with Linux, and the > traditional "Hello World!" module worked fine, except that I couldnt > find which header file contains the prototype of printk() (gcc with > -Wall gave a warning). Does any one know where is this function prototyped? Sorry I don't know and unfounrtly not near a linux box to help. 8( > Now for the bigger problem: When I opened /usr/include/linux/fs.h, I > didn't find the definition of the "struct file{}", which I needed for a > module, though it was there in /usr/src/linux-2.4/include/linux/fs.h. > The /usr/include header contained only a portion of the kernel header. > So my question is this: How do I get the definition if "file struct". > Which are the correct headers to be used in the modules: the kernel > headers from the src/ directory, or from the /usr/include directory? Modules should (must?) use the headers in the src directory. The headers in the include directory is for user land apps. -- Eric "Given enough time, and money... Microsoft will eventually invent UNIX." -- Unknown Random Sig: 28 -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/