Re: io-seek fixes.

[Roland McGrath]

Seeing all that repeated change makes me think we should have an
iohelp function to do the computation and checking for you, e.g.

error_t iohelp_seek (off_t *stored_pos, off_t end_pos,
                     off_t offs, int whence, off_t *new_offs);

Would you like to do that?


Thanks,
Roland