lib/xz/xz_dec_stream.c

140 	} temp;
163  * Fill s->temp by copying data starting from b->in[b->in_pos]. Caller
164  * must have set s->temp.pos to indicate how much data we are supposed
165  * to copy into s->temp.buf. Return true once s->temp.pos has reached
166  * s->temp.size.
171 			b->in_size - b->in_pos, s->temp.size - s->temp.pos);
173 	memcpy(s->temp.buf + s->temp.pos, b->in + b->in_pos, copy_size);
175 	s->temp.pos += copy_size;
177 	if (s->temp.pos == s->temp.size) {
178 		s->temp.pos = 0;
409 	if (!memeq(s->temp.buf, HEADER_MAGIC, HEADER_MAGIC_SIZE))
412 	if (xz_crc32(s->temp.buf + HEADER_MAGIC_SIZE, 2, 0)
413 			!= get_le32(s->temp.buf + HEADER_MAGIC_SIZE + 2))
416 	if (s->temp.buf[HEADER_MAGIC_SIZE] != 0)
426 	s->check_type = s->temp.buf[HEADER_MAGIC_SIZE + 1];
445 	if (!memeq(s->temp.buf + 10, FOOTER_MAGIC, FOOTER_MAGIC_SIZE))
448 	if (xz_crc32(s->temp.buf + 4, 6, 0) != get_le32(s->temp.buf))
456 	if ((s->index.size >> 2) != get_le32(s->temp.buf + 4))
459 	if (s->temp.buf[8] != 0 || s->temp.buf[9] != s->check_type)
475 	 * Validate the CRC32. We know that the temp buffer is at least
478 	s->temp.size -= 4;
479 	if (xz_crc32(s->temp.buf, s->temp.size, 0)
480 			!= get_le32(s->temp.buf + s->temp.size))
483 	s->temp.pos = 2;
490 	if (s->temp.buf[1] & 0x3E)
492 	if (s->temp.buf[1] & 0x3F)
497 	if (s->temp.buf[1] & 0x40) {
498 		if (dec_vli(s, s->temp.buf, &s->temp.pos, s->temp.size)
508 	if (s->temp.buf[1] & 0x80) {
509 		if (dec_vli(s, s->temp.buf, &s->temp.pos, s->temp.size)
520 	s->bcj_active = s->temp.buf[1] & 0x01;
522 		if (s->temp.size - s->temp.pos < 2)
525 		ret = xz_dec_bcj_reset(s->bcj, s->temp.buf[s->temp.pos++]);
533 		if (s->temp.buf[s->temp.pos++] != 0x00)
539 	if (s->temp.size - s->temp.pos < 2)
543 	if (s->temp.buf[s->temp.pos++] != 0x21)
547 	if (s->temp.buf[s->temp.pos++] != 0x01)
551 	if (s->temp.size - s->temp.pos < 1)
554 	ret = xz_dec_lzma2_reset(s->lzma2, s->temp.buf[s->temp.pos++]);
559 	while (s->temp.pos < s->temp.size)
560 		if (s->temp.buf[s->temp.pos++] != 0x00)
563 	s->temp.pos = 0;
584 			 * Stream Header is copied to s->temp, and then
626 			s->temp.size = s->block_header.size;
627 			s->temp.pos = 0;
721 			s->temp.size = STREAM_HEADER_SIZE;
834 	s->temp.pos = 0;
835 	s->temp.size = STREAM_HEADER_SIZE;