71 #define	SBUF_HASROOM(s)		((s)->s_len < (s)->s_size - 1)
72 #define	SBUF_FREESPACE(s)	((s)->s_size - ((s)->s_len + 1))
112 		KASSERT(s->s_len <= s->s_size,  in _assert_sbuf_integrity()
114 		    (intmax_t)s->s_len, (intmax_t)s->s_size));  in _assert_sbuf_integrity()
116 		KASSERT(s->s_len < s->s_size,  in _assert_sbuf_integrity()
118 		    (intmax_t)s->s_len, (intmax_t)s->s_size));  in _assert_sbuf_integrity()
280 	s->s_len = s->s_size - 1;  in sbuf_uionew()
323 	s->s_len = 0;  in sbuf_clear()
347 	if (pos < 0 || pos > s->s_len)  in sbuf_setpos()
349 	s->s_len = pos;  in sbuf_setpos()
378 	KASSERT(func == s->s_drain_func || s->s_len == 0,  in sbuf_set_drain()
396 	if ((s->s_len == 0) || (s->s_error != 0))  in sbuf_drain()
402 	    SBUF_DODRAINTOEOR(s) ? s->s_rec_off : s->s_len);  in sbuf_drain()
407 	KASSERT(len > 0 && len <= s->s_len,  in sbuf_drain()
409 	s->s_len -= len;  in sbuf_drain()
415 	if (s->s_len == 0) {  in sbuf_drain()
431 	memmove(s->s_buf, s->s_buf + len, s->s_len);  in sbuf_drain()
467 		memcpy(&s->s_buf[s->s_len], buf, n);  in sbuf_put_bytes()
468 		s->s_len += n;  in sbuf_put_bytes()
497 	s->s_buf[s->s_len++] = c;  in sbuf_put_byte()
537 	if (copyin(uaddr, s->s_buf + s->s_len, len) != 0)  in sbuf_bcopyin()
539 	s->s_len += len;  in sbuf_bcopyin()
598 	switch (copyinstr(uaddr, s->s_buf + s->s_len, len + 1, &done)) {  in sbuf_copyin()
603 		s->s_len += done - 1;  in sbuf_copyin()
691 		len = vsnprintf(&s->s_buf[s->s_len], SBUF_FREESPACE(s) + 1,  in sbuf_vprintf()
702 		if (s->s_drain_func != NULL && s->s_len > 0)  in sbuf_vprintf()
719 	s->s_len += len;  in sbuf_vprintf()
723 	KASSERT(s->s_len < s->s_size,  in sbuf_vprintf()
724 	    ("wrote past end of sbuf (%d >= %d)", s->s_len, s->s_size));  in sbuf_vprintf()
781 	if (s->s_len == 0) {  in sbuf_nl_terminate()
784 	} else if (s->s_buf[s->s_len - 1] != '\n')  in sbuf_nl_terminate()
807 	while (s->s_len > 0 && isspace(s->s_buf[s->s_len-1])) {  in sbuf_trim()
808 		--s->s_len;  in sbuf_trim()
836 	s->s_buf[s->s_len] = '\0';  in sbuf_finish()
838 		s->s_len++;  in sbuf_finish()
840 		while (s->s_len > 0 && s->s_error == 0)  in sbuf_finish()
887 		return (s->s_len + 1);  in sbuf_len()
888 	return (s->s_len);  in sbuf_len()
935 		s->s_rec_off = s->s_len;  in sbuf_start_section()