455 rbzs_grow(resbuf_t *rb)  in rbzs_grow()  argument
457 	off_t ptroff = (caddr_t)rb->rb_zstr.next_out - rb->rb_base;  in rbzs_grow()
459 	rb->rb_size += RES_BUF_CHUNK_SIZE;  in rbzs_grow()
460 	rb->rb_base = xrealloc(rb->rb_base, rb->rb_size);  in rbzs_grow()
461 	rb->rb_ptr = rb->rb_base + ptroff;  in rbzs_grow()
462 	rb->rb_zstr.next_out = (Bytef *)(rb->rb_ptr);  in rbzs_grow()
463 	rb->rb_zstr.avail_out += RES_BUF_CHUNK_SIZE;  in rbzs_grow()
467 compress_start(resbuf_t *rb)  in compress_start()  argument
471 	rb->rb_zstr.zalloc = (alloc_func)0;  in compress_start()
472 	rb->rb_zstr.zfree = (free_func)0;  in compress_start()
473 	rb->rb_zstr.opaque = (voidpf)0;  in compress_start()
475 	if ((rc = deflateInit(&rb->rb_zstr, Z_BEST_COMPRESSION)) != Z_OK)  in compress_start()
482 	resbuf_t *rb = (resbuf_t *)data;  in compress_buffer()  local
485 	rb->rb_zstr.next_out = (Bytef *)rb->rb_ptr;  in compress_buffer()
486 	rb->rb_zstr.avail_out = rb->rb_size - (rb->rb_ptr - rb->rb_base);  in compress_buffer()
487 	rb->rb_zstr.next_in = (Bytef *)buf;  in compress_buffer()
488 	rb->rb_zstr.avail_in = n;  in compress_buffer()
490 	while (rb->rb_zstr.avail_in) {  in compress_buffer()
491 		if (rb->rb_zstr.avail_out == 0)  in compress_buffer()
492 			rbzs_grow(rb);  in compress_buffer()
494 		if ((rc = deflate(&rb->rb_zstr, Z_NO_FLUSH)) != Z_OK)  in compress_buffer()
497 	rb->rb_ptr = (caddr_t)rb->rb_zstr.next_out;  in compress_buffer()
503 compress_flush(resbuf_t *rb, int type)  in compress_flush()  argument
508 		if (rb->rb_zstr.avail_out == 0)  in compress_flush()
509 			rbzs_grow(rb);  in compress_flush()
511 		rc = deflate(&rb->rb_zstr, type);  in compress_flush()
518 	rb->rb_ptr = (caddr_t)rb->rb_zstr.next_out;  in compress_flush()
522 compress_end(resbuf_t *rb)  in compress_end()  argument
526 	compress_flush(rb, Z_FINISH);  in compress_end()
528 	if ((rc = deflateEnd(&rb->rb_zstr)) != Z_OK)  in compress_end()