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-rw-r--r--block.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/block.c b/block.c
index 00982edf45..5ce08a79fd 100644
--- a/block.c
+++ b/block.c
@@ -6326,6 +6326,7 @@ static int bdrv_inactivate_recurse(BlockDriverState *bs)
{
BdrvChild *child, *parent;
int ret;
+ uint64_t cumulative_perms, cumulative_shared_perms;
if (!bs->drv) {
return -ENOMEDIUM;
@@ -6356,6 +6357,13 @@ static int bdrv_inactivate_recurse(BlockDriverState *bs)
}
}
+ bdrv_get_cumulative_perm(bs, &cumulative_perms,
+ &cumulative_shared_perms);
+ if (cumulative_perms & (BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED)) {
+ /* Our inactive parents still need write access. Inactivation failed. */
+ return -EPERM;
+ }
+
bs->open_flags |= BDRV_O_INACTIVE;
/*