add a todo file

typo spotted by cage, thanks!

initialize evbuffer only for dirs

first half of the tread implementation done, no new tests yet

allow opening directories (for reading only)

make the compiler happy

add two open-related tests

fix walk fid check: look at fd not iomode to see if it was opened

ensure we don't call openat(2) with "" as path

fix Tattach handling The previous implementation assumed that you can't attach more than once. This is clearly wrong, Tattach and Twalk are the two ways to obtain new fids. This drops the error on subsequential attach and making the test "multiple attach" passes.

add a test that calls attach multiple times

support running only a subset of the tests using a matching pattern

add documentation for the mentioned messages types

cosmetic change: "X/Y passed" instead of "passed X/Y"

don't let nwqid become negative at the start of the loop nwqid is 0, so if the first component can't be opened nwqid becomes -1 and since it's not 0, we end up calling np_walk with -1 as length. This in turns converts it back to uint16_t and we generate an invalid packet. The solution is to not decrement nwqid at all, it fixes all the current tests case and is the correct behaviour that the rest of the code expects.