fb_err
fbuf->fb_err = err;
DPRINTF("errno: %d", fbuf->fb_err);
f->fb_err = ENXIO;
f->fb_err = ENXIO;
fbuf->fb_err = hdr.fh_err;
if ((fbuf->fb_len && fbuf->fb_err) || fbuf->fb_len > fbuf->fb_io_len ||
fbuf->fb_io_len, fbuf->fb_len, fbuf->fb_err);
fbuf->fb_err = EIO;
fbuf->fb_err = 0;
return (fbuf->fb_err);