Wouldn't this be a POSIX-compliant version of write(2)?

ssize_t write(int fd, const void *buf, size_t count)
{
return count;
}

Since there's no guarantee that the data is written until fsync(2) is called, and it hasn't been called at the point fwrite(2) returns, why attempt to write the data at all?

I agree -- I'm also a die-hard Trackball Explorer user. Fortunately, nobody at work knows how much they're going for on eBay or I'd have to lock it up at night. I love the fingertip control, lack of arm movement (no "mouse elbow"!) and the extra two buttons for the fingers. I have those bound to page up/down which makes paging through web sites very easy.