Joe Conway <mail(at)joeconway(dot)com> writes: > All good stuff -- I believe the attached checks all the boxes.
Looks okay to me, except I think you want
! if (bytes_to_read > 0)
! if (bytes_to_read >= 0)
As it stands, a zero request will be treated like -1 (read all the rest of the file) while ISTM it ought to be an expensive way to read zero bytes --- perhaps useful to check the filename and seek offset validity?
> The intention here seems to be that if you pass bytes_to_read = -1 with a > negative offset, it will give you the last offset bytes of the file.
I think it's just trying to convert bytes_to_read = -1 into an explicit positive length-to-read in all cases. We don't need that anymore with this code, so dropping it is fine.