/*
* Return the length of the sbuf data.
*/
ssize_t
sbuf_len(struct sbuf *s)
{
assert_sbuf_integrity(s);
/* don't care if it's finished or not */
KASSERT(s->s_drain_func == NULL,
("%s makes no sense on sbuf %p with drain", __func__, s));
if (s->s_error != 0)
return (-1);
/* If finished, nulterm is already in len, else add one. */
if (SBUF_NULINCLUDED(s) && !SBUF_ISFINISHED(s))
return (s->s_len + 1);
return (s->s_len);
}
static void
_assert_sbuf_integrity(const char *fun, struct sbuf *s)
{
KASSERT(s != NULL,
("%s called with a NULL sbuf pointer", fun));
KASSERT(s->s_buf != NULL,
("%s called with uninitialized or corrupt sbuf", fun));
if (SBUF_ISFINISHED(s) && SBUF_NULINCLUDED(s)) {
KASSERT(s->s_len <= s->s_size,
("wrote past end of sbuf (%jd >= %jd)",
(intmax_t)s->s_len, (intmax_t)s->s_size));
} else {
KASSERT(s->s_len < s->s_size,
("wrote past end of sbuf (%jd >= %jd)",
(intmax_t)s->s_len, (intmax_t)s->s_size));
}
}
/*
* Check if an sbuf has been finished.
*/
int
sbuf_done(const struct sbuf *s)
{
return (SBUF_ISFINISHED(s));
}