Thanks Alex for your description. I've found it useful for my 'code digging'. Now I have to only spend many (probably) weeks :) to understand what is going on in sources. If I run into another problem i will try catch you (and others) on dfbsd's irc channel.
Greetings Marcin 2010/11/9 Alex Hornung <[email protected]>: > On 09/11/2010 05:31, <Marcin Ropa> wrote: >> >> There are tons of code. Is there any README, describing which >> functionality I may expected in which subdirectory? Where is core of >> the system, where main structures are initialized and everything >> begins when the system starting. > > Just take a look at the directory structure in the source tree, I think it's > pretty obvious how things fit together. (Almost) every top level directory > in userland has a name that corresponds to its name on the destination > installation, e.g. usr.bin is the stuff that goes into /usr/bin. Some > notable exceptions are: > contrib -> which is contributed (3rd party) code. The Makefiles are still in > the normal directories (i.e. sbin) but the sources for these are here > gnu -> contains the the Makefiles for gnu-licensed programs (the code > resides in contrib) > crypto -> contains sources that are of restricted exportability, at least > historically. > nrelease -> contains stuff to build ISOs and IMGs > tools -> contains useful stuff like our git template, iirc > test -> contains all sorts of random junk, including test cases, small > scripts, files for test commits, ... > and finally: > sys -> Contains the kernel and bootloader code > > In sys the most important directories that you should know about are, > kern -> main kernel functionality > sys -> main kernel include files > dev -> contains all sorts of device drivers, nicely categorized in the > subfolders > net -> Contains network related stuff (but not hardware drivers) > platform -> platform/architecture dependent code that is not portable > bus -> Contains PCI, ISA and CAM (maybe you know it from FreeBSD, maybe not; > it's a neat abstraction layer for SCSI stuff, for example, above the HBAs) > > For more help, just ask on the IRC. > > Hope this helps, > Alex Hornung > > > >
