I have designed a ksyms driver for -current, it is attached to this mail. I would like some feedback on the specific design of this driver and also if other people in the FreeBSD camp would find it useful, several other systems implement some like functionality and I see no reason why we cannot.
One of the design goals was to be able to tell what symbols were provided by what kernel modules. This was fairly easy to do by making each kernel module have its own ELF symbol table, therein lies is the problem. Some programs (readelf) dont mind multiple symbol tables, others (nm) do. One solution I have come up with but have not designed follows: Create a specific /dev/ksyms/xxx entry for each kernel module that is loaded in addition to an 'all' entry. The 'all' entry would have some different logic so that it only creates one symbol table based upon the symbols from all modules. The entries in the directory would be updated whenever modules were loaded or unloaded. This solution seems to be the most robust one to me but it also means that the driver would have to rely on devfs to function correctly. Thoughts?
ksyms.tgz
Description: application/tar-gz
