lib/xz/xz_dec_stream.c

129 	} temp;
152  * Fill s->temp by copying data starting from b->in[b->in_pos]. Caller
153  * must have set s->temp.pos to indicate how much data we are supposed
154  * to copy into s->temp.buf. Return true once s->temp.pos has reached
155  * s->temp.size.
160 			b->in_size - b->in_pos, s->temp.size - s->temp.pos);
162 	memcpy(s->temp.buf + s->temp.pos, b->in + b->in_pos, copy_size);
164 	s->temp.pos += copy_size;
166 	if (s->temp.pos == s->temp.size) {
167 		s->temp.pos = 0;
389 	if (!memeq(s->temp.buf, HEADER_MAGIC, HEADER_MAGIC_SIZE))
392 	if (xz_crc32(s->temp.buf + HEADER_MAGIC_SIZE, 2, 0)
393 			!= get_le32(s->temp.buf + HEADER_MAGIC_SIZE + 2))
396 	if (s->temp.buf[HEADER_MAGIC_SIZE] != 0)
405 	s->check_type = s->temp.buf[HEADER_MAGIC_SIZE + 1];
424 	if (!memeq(s->temp.buf + 10, FOOTER_MAGIC, FOOTER_MAGIC_SIZE))
427 	if (xz_crc32(s->temp.buf + 4, 6, 0) != get_le32(s->temp.buf))
435 	if ((s->index.size >> 2) != get_le32(s->temp.buf + 4))
438 	if (s->temp.buf[8] != 0 || s->temp.buf[9] != s->check_type)
454 	 * Validate the CRC32. We know that the temp buffer is at least
457 	s->temp.size -= 4;
458 	if (xz_crc32(s->temp.buf, s->temp.size, 0)
459 			!= get_le32(s->temp.buf + s->temp.size))
462 	s->temp.pos = 2;
469 	if (s->temp.buf[1] & 0x3E)
471 	if (s->temp.buf[1] & 0x3F)
476 	if (s->temp.buf[1] & 0x40) {
477 		if (dec_vli(s, s->temp.buf, &s->temp.pos, s->temp.size)
487 	if (s->temp.buf[1] & 0x80) {
488 		if (dec_vli(s, s->temp.buf, &s->temp.pos, s->temp.size)
499 	s->bcj_active = s->temp.buf[1] & 0x01;
501 		if (s->temp.size - s->temp.pos < 2)
504 		ret = xz_dec_bcj_reset(s->bcj, s->temp.buf[s->temp.pos++]);
512 		if (s->temp.buf[s->temp.pos++] != 0x00)
518 	if (s->temp.size - s->temp.pos < 2)
522 	if (s->temp.buf[s->temp.pos++] != 0x21)
526 	if (s->temp.buf[s->temp.pos++] != 0x01)
530 	if (s->temp.size - s->temp.pos < 1)
533 	ret = xz_dec_lzma2_reset(s->lzma2, s->temp.buf[s->temp.pos++]);
538 	while (s->temp.pos < s->temp.size)
539 		if (s->temp.buf[s->temp.pos++] != 0x00)
542 	s->temp.pos = 0;
563 			 * Stream Header is copied to s->temp, and then
605 			s->temp.size = s->block_header.size;
606 			s->temp.pos = 0;
695 			s->temp.size = STREAM_HEADER_SIZE;
808 	s->temp.pos = 0;
809 	s->temp.size = STREAM_HEADER_SIZE;