536 rbzs_grow(resbuf_t *rb)  in rbzs_grow()  argument
538 	off_t ptroff = (caddr_t)rb->rb_zstr.next_out - rb->rb_base;  in rbzs_grow()
540 	rb->rb_size += RES_BUF_CHUNK_SIZE;  in rbzs_grow()
541 	rb->rb_base = xrealloc(rb->rb_base, rb->rb_size);  in rbzs_grow()
542 	rb->rb_ptr = rb->rb_base + ptroff;  in rbzs_grow()
543 	rb->rb_zstr.next_out = (Bytef *)(rb->rb_ptr);  in rbzs_grow()
544 	rb->rb_zstr.avail_out += RES_BUF_CHUNK_SIZE;  in rbzs_grow()
548 compress_start(resbuf_t *rb)  in compress_start()  argument
552 	rb->rb_zstr.zalloc = (alloc_func)0;  in compress_start()
553 	rb->rb_zstr.zfree = (free_func)0;  in compress_start()
554 	rb->rb_zstr.opaque = (voidpf)0;  in compress_start()
556 	if ((rc = deflateInit(&rb->rb_zstr, Z_BEST_COMPRESSION)) != Z_OK)  in compress_start()
563 	resbuf_t *rb = (resbuf_t *)data;  in compress_buffer()  local
566 	rb->rb_zstr.next_out = (Bytef *)rb->rb_ptr;  in compress_buffer()
567 	rb->rb_zstr.avail_out = rb->rb_size - (rb->rb_ptr - rb->rb_base);  in compress_buffer()
568 	rb->rb_zstr.next_in = buf;  in compress_buffer()
569 	rb->rb_zstr.avail_in = n;  in compress_buffer()
571 	while (rb->rb_zstr.avail_in) {  in compress_buffer()
572 		if (rb->rb_zstr.avail_out == 0)  in compress_buffer()
573 			rbzs_grow(rb);  in compress_buffer()
575 		if ((rc = deflate(&rb->rb_zstr, Z_NO_FLUSH)) != Z_OK)  in compress_buffer()
578 	rb->rb_ptr = (caddr_t)rb->rb_zstr.next_out;  in compress_buffer()
584 compress_flush(resbuf_t *rb, int type)  in compress_flush()  argument
589 		if (rb->rb_zstr.avail_out == 0)  in compress_flush()
590 			rbzs_grow(rb);  in compress_flush()
592 		rc = deflate(&rb->rb_zstr, type);  in compress_flush()
599 	rb->rb_ptr = (caddr_t)rb->rb_zstr.next_out;  in compress_flush()
603 compress_end(resbuf_t *rb)  in compress_end()  argument
607 	compress_flush(rb, Z_FINISH);  in compress_end()
609 	if ((rc = deflateEnd(&rb->rb_zstr)) != Z_OK)  in compress_end()