286 static void dict_reset(struct dictionary *dict, struct xz_buf *b)  in dict_reset()  argument
289 		dict->buf = b->out + b->out_pos;  in dict_reset()
290 		dict->end = b->out_size - b->out_pos;  in dict_reset()
374 static void dict_uncompressed(struct dictionary *dict, struct xz_buf *b,  in dict_uncompressed()  argument
379 	while (*left > 0 && b->in_pos < b->in_size  in dict_uncompressed()
380 			&& b->out_pos < b->out_size) {  in dict_uncompressed()
381 		copy_size = min(b->in_size - b->in_pos,  in dict_uncompressed()
382 				b->out_size - b->out_pos);  in dict_uncompressed()
390 		memcpy(dict->buf + dict->pos, b->in + b->in_pos, copy_size);  in dict_uncompressed()
400 			memcpy(b->out + b->out_pos, b->in + b->in_pos,  in dict_uncompressed()
406 		b->out_pos += copy_size;  in dict_uncompressed()
407 		b->in_pos += copy_size;  in dict_uncompressed()
416 static uint32_t dict_flush(struct dictionary *dict, struct xz_buf *b)  in dict_flush()  argument
424 		memcpy(b->out + b->out_pos, dict->buf + dict->start,  in dict_flush()
429 	b->out_pos += copy_size;  in dict_flush()
449 static bool rc_read_init(struct rc_dec *rc, struct xz_buf *b)  in rc_read_init()  argument
452 		if (b->in_pos == b->in_size)  in rc_read_init()
455 		rc->code = (rc->code << 8) + b->in[b->in_pos++];  in rc_read_init()
846 static bool lzma2_lzma(struct xz_dec_lzma2 *s, struct xz_buf *b)  in lzma2_lzma()  argument
851 	in_avail = b->in_size - b->in_pos;  in lzma2_lzma()
859 		memcpy(s->temp.buf + s->temp.size, b->in + b->in_pos, tmp);  in lzma2_lzma()
868 			b->in_pos += tmp;  in lzma2_lzma()
889 		b->in_pos += s->rc.in_pos - s->temp.size;  in lzma2_lzma()
893 	in_avail = b->in_size - b->in_pos;  in lzma2_lzma()
895 		s->rc.in = b->in;  in lzma2_lzma()
896 		s->rc.in_pos = b->in_pos;  in lzma2_lzma()
899 			s->rc.in_limit = b->in_pos + s->lzma2.compressed;  in lzma2_lzma()
901 			s->rc.in_limit = b->in_size - LZMA_IN_REQUIRED;  in lzma2_lzma()
906 		in_avail = s->rc.in_pos - b->in_pos;  in lzma2_lzma()
911 		b->in_pos = s->rc.in_pos;  in lzma2_lzma()
914 	in_avail = b->in_size - b->in_pos;  in lzma2_lzma()
919 		memcpy(s->temp.buf, b->in + b->in_pos, in_avail);  in lzma2_lzma()
921 		b->in_pos += in_avail;  in lzma2_lzma()
932 				       struct xz_buf *b)  in xz_dec_lzma2_run()  argument
936 	while (b->in_pos < b->in_size || s->lzma2.sequence == SEQ_LZMA_RUN) {  in xz_dec_lzma2_run()
970 			tmp = b->in[b->in_pos++];  in xz_dec_lzma2_run()
978 				dict_reset(&s->dict, b);  in xz_dec_lzma2_run()
1018 					+= (uint32_t)b->in[b->in_pos++] << 8;  in xz_dec_lzma2_run()
1024 					+= (uint32_t)b->in[b->in_pos++] + 1;  in xz_dec_lzma2_run()
1030 					= (uint32_t)b->in[b->in_pos++] << 8;  in xz_dec_lzma2_run()
1036 					+= (uint32_t)b->in[b->in_pos++] + 1;  in xz_dec_lzma2_run()
1041 			if (!lzma_props(s, b->in[b->in_pos++]))  in xz_dec_lzma2_run()
1052 			if (!rc_read_init(&s->rc, b))  in xz_dec_lzma2_run()
1071 					b->out_size - b->out_pos,  in xz_dec_lzma2_run()
1073 			if (!lzma2_lzma(s, b))  in xz_dec_lzma2_run()
1076 			s->lzma2.uncompressed -= dict_flush(&s->dict, b);  in xz_dec_lzma2_run()
1086 			} else if (b->out_pos == b->out_size  in xz_dec_lzma2_run()
1087 					|| (b->in_pos == b->in_size  in xz_dec_lzma2_run()
1096 			dict_uncompressed(&s->dict, b, &s->lzma2.compressed);  in xz_dec_lzma2_run()