On Thu, Jan 29, 2015 at 07:43:29PM +0100, Yann Droneaud wrote: > The write() syscall must return the size buffer passed to it, or > less, but in such case it would ask for trouble as userspace would > be allowed to write() the remaining bytes. Returning a size bigger > than the one passed to write() is not acceptable and would break any > expectation.
By that logic the 0 return is still wrong, and it should be ucore->in_len But I think we can return less without risking anything breaking, it already violates the invariant associated with write() - it mutates the buffer passed in! Jason -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
