Virtual PC read-only disk image support (Alex Beregszaszi)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1417 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/vl.h b/vl.h
index 4ad4330..8d29506 100644
--- a/vl.h
+++ b/vl.h
@@ -383,6 +383,7 @@
 extern BlockDriver bdrv_cloop;
 extern BlockDriver bdrv_dmg;
 extern BlockDriver bdrv_bochs;
+extern BlockDriver bdrv_vpc;
 
 void bdrv_init(void);
 BlockDriver *bdrv_find_format(const char *format_name);