35 		    buf->size, buf->alloc, buf->off, buf->max_size); \
55 sshbuf_check_sanity(const struct sshbuf *buf)  in sshbuf_check_sanity()  argument
58 	if (__predict_false(buf == NULL ||  in sshbuf_check_sanity()
59 	    (!buf->readonly && buf->d != buf->cd) ||  in sshbuf_check_sanity()
60 	    buf->refcount < 1 || buf->refcount > SSHBUF_REFS_MAX ||  in sshbuf_check_sanity()
61 	    buf->cd == NULL ||  in sshbuf_check_sanity()
62 	    buf->max_size > SSHBUF_SIZE_MAX ||  in sshbuf_check_sanity()
63 	    buf->alloc > buf->max_size ||  in sshbuf_check_sanity()
64 	    buf->size > buf->alloc ||  in sshbuf_check_sanity()
65 	    buf->off > buf->size)) {  in sshbuf_check_sanity()
76 sshbuf_maybe_pack(struct sshbuf *buf, int force)  in sshbuf_maybe_pack()  argument
80 	if (buf->off == 0 || buf->readonly || buf->refcount > 1)  in sshbuf_maybe_pack()
83 	    (buf->off >= SSHBUF_PACK_MIN && buf->off >= buf->size / 2)) {  in sshbuf_maybe_pack()
84 		memmove(buf->d, buf->d + buf->off, buf->size - buf->off);  in sshbuf_maybe_pack()
85 		buf->size -= buf->off;  in sshbuf_maybe_pack()
86 		buf->off = 0;  in sshbuf_maybe_pack()
143 sshbuf_fromb(struct sshbuf *buf)  in sshbuf_fromb()  argument
147 	if (sshbuf_check_sanity(buf) != 0)  in sshbuf_fromb()
149 	if ((ret = sshbuf_from(sshbuf_ptr(buf), sshbuf_len(buf))) == NULL)  in sshbuf_fromb()
151 	if (sshbuf_set_parent(ret, buf) != 0) {  in sshbuf_fromb()
159 sshbuf_free(struct sshbuf *buf)  in sshbuf_free()  argument
161 	if (buf == NULL)  in sshbuf_free()
169 	if (sshbuf_check_sanity(buf) != 0)  in sshbuf_free()
177 	buf->refcount--;  in sshbuf_free()
178 	if (buf->refcount > 0)  in sshbuf_free()
185 	sshbuf_free(buf->parent);  in sshbuf_free()
186 	buf->parent = NULL;  in sshbuf_free()
188 	if (!buf->readonly) {  in sshbuf_free()
189 		explicit_bzero(buf->d, buf->alloc);  in sshbuf_free()
190 		free(buf->d);  in sshbuf_free()
192 	freezero(buf, sizeof(*buf));  in sshbuf_free()
196 sshbuf_reset(struct sshbuf *buf)  in sshbuf_reset()  argument
200 	if (buf->readonly || buf->refcount > 1) {  in sshbuf_reset()
202 		buf->off = buf->size;  in sshbuf_reset()
205 	if (sshbuf_check_sanity(buf) != 0)  in sshbuf_reset()
207 	buf->off = buf->size = 0;  in sshbuf_reset()
208 	if (buf->alloc != SSHBUF_SIZE_INIT) {  in sshbuf_reset()
209 		if ((d = recallocarray(buf->d, buf->alloc, SSHBUF_SIZE_INIT,  in sshbuf_reset()
211 			buf->cd = buf->d = d;  in sshbuf_reset()
212 			buf->alloc = SSHBUF_SIZE_INIT;  in sshbuf_reset()
215 	explicit_bzero(buf->d, buf->alloc);  in sshbuf_reset()
219 sshbuf_max_size(const struct sshbuf *buf)  in sshbuf_max_size()  argument
221 	return buf->max_size;  in sshbuf_max_size()
225 sshbuf_alloc(const struct sshbuf *buf)  in sshbuf_alloc()  argument
227 	return buf->alloc;  in sshbuf_alloc()
231 sshbuf_parent(const struct sshbuf *buf)  in sshbuf_parent()  argument
233 	return buf->parent;  in sshbuf_parent()
237 sshbuf_refcount(const struct sshbuf *buf)  in sshbuf_refcount()  argument
239 	return buf->refcount;  in sshbuf_refcount()
243 sshbuf_set_max_size(struct sshbuf *buf, size_t max_size)  in sshbuf_set_max_size()  argument
249 	SSHBUF_DBG(("set max buf = %p len = %zu", buf, max_size));  in sshbuf_set_max_size()
250 	if ((r = sshbuf_check_sanity(buf)) != 0)  in sshbuf_set_max_size()
252 	if (max_size == buf->max_size)  in sshbuf_set_max_size()
254 	if (buf->readonly || buf->refcount > 1)  in sshbuf_set_max_size()
259 	sshbuf_maybe_pack(buf, max_size < buf->size);  in sshbuf_set_max_size()
260 	if (max_size < buf->alloc && max_size > buf->size) {  in sshbuf_set_max_size()
261 		if (buf->size < SSHBUF_SIZE_INIT)  in sshbuf_set_max_size()
264 			rlen = ROUNDUP(buf->size, SSHBUF_SIZE_INC);  in sshbuf_set_max_size()
268 		if ((dp = recallocarray(buf->d, buf->alloc, rlen, 1)) == NULL)  in sshbuf_set_max_size()
270 		buf->cd = buf->d = dp;  in sshbuf_set_max_size()
271 		buf->alloc = rlen;  in sshbuf_set_max_size()
274 	if (max_size < buf->alloc)  in sshbuf_set_max_size()
276 	buf->max_size = max_size;  in sshbuf_set_max_size()
281 sshbuf_len(const struct sshbuf *buf)  in sshbuf_len()  argument
283 	if (sshbuf_check_sanity(buf) != 0)  in sshbuf_len()
285 	return buf->size - buf->off;  in sshbuf_len()
289 sshbuf_avail(const struct sshbuf *buf)  in sshbuf_avail()  argument
291 	if (sshbuf_check_sanity(buf) != 0 || buf->readonly || buf->refcount > 1)  in sshbuf_avail()
293 	return buf->max_size - (buf->size - buf->off);  in sshbuf_avail()
297 sshbuf_ptr(const struct sshbuf *buf)  in sshbuf_ptr()  argument
299 	if (sshbuf_check_sanity(buf) != 0)  in sshbuf_ptr()
301 	return buf->cd + buf->off;  in sshbuf_ptr()
305 sshbuf_mutable_ptr(const struct sshbuf *buf)  in sshbuf_mutable_ptr()  argument
307 	if (sshbuf_check_sanity(buf) != 0 || buf->readonly || buf->refcount > 1)  in sshbuf_mutable_ptr()
309 	return buf->d + buf->off;  in sshbuf_mutable_ptr()
313 sshbuf_check_reserve(const struct sshbuf *buf, size_t len)  in sshbuf_check_reserve()  argument
317 	if ((r = sshbuf_check_sanity(buf)) != 0)  in sshbuf_check_reserve()
319 	if (buf->readonly || buf->refcount > 1)  in sshbuf_check_reserve()
323 	if (len > buf->max_size || buf->max_size - len < buf->size - buf->off)  in sshbuf_check_reserve()
329 sshbuf_allocate(struct sshbuf *buf, size_t len)  in sshbuf_allocate()  argument
335 	SSHBUF_DBG(("allocate buf = %p len = %zu", buf, len));  in sshbuf_allocate()
336 	if ((r = sshbuf_check_reserve(buf, len)) != 0)  in sshbuf_allocate()
342 	sshbuf_maybe_pack(buf, buf->size + len > buf->max_size);  in sshbuf_allocate()
344 	if (len + buf->size <= buf->alloc)  in sshbuf_allocate()
351 	need = len + buf->size - buf->alloc;  in sshbuf_allocate()
352 	rlen = ROUNDUP(buf->alloc + need, SSHBUF_SIZE_INC);  in sshbuf_allocate()
354 	if (rlen > buf->max_size)  in sshbuf_allocate()
355 		rlen = buf->alloc + need;  in sshbuf_allocate()
357 	if ((dp = recallocarray(buf->d, buf->alloc, rlen, 1)) == NULL) {  in sshbuf_allocate()
361 	buf->alloc = rlen;  in sshbuf_allocate()
362 	buf->cd = buf->d = dp;  in sshbuf_allocate()
363 	if ((r = sshbuf_check_reserve(buf, len)) < 0) {  in sshbuf_allocate()
372 sshbuf_reserve(struct sshbuf *buf, size_t len, u_char **dpp)  in sshbuf_reserve()  argument
380 	SSHBUF_DBG(("reserve buf = %p len = %zu", buf, len));  in sshbuf_reserve()
381 	if ((r = sshbuf_allocate(buf, len)) != 0)  in sshbuf_reserve()
384 	dp = buf->d + buf->size;  in sshbuf_reserve()
385 	buf->size += len;  in sshbuf_reserve()
392 sshbuf_consume(struct sshbuf *buf, size_t len)  in sshbuf_consume()  argument
397 	if ((r = sshbuf_check_sanity(buf)) != 0)  in sshbuf_consume()
401 	if (len > sshbuf_len(buf))  in sshbuf_consume()
403 	buf->off += len;  in sshbuf_consume()
405 	if (buf->off == buf->size)  in sshbuf_consume()
406 		buf->off = buf->size = 0;  in sshbuf_consume()
412 sshbuf_consume_end(struct sshbuf *buf, size_t len)  in sshbuf_consume_end()  argument
417 	if ((r = sshbuf_check_sanity(buf)) != 0)  in sshbuf_consume_end()
421 	if (len > sshbuf_len(buf))  in sshbuf_consume_end()
423 	buf->size -= len;  in sshbuf_consume_end()