[PATCH 3/3] udf: Warn if block mapping is done for in-ICB files

[Jan Kara <jack@xxxxxxx>]

Now that address space operations are merge dfor in-ICB and normal
files, it is more likely some code mistakenly tries to map blocks for
in-ICB files. WARN and return error instead of silently returning
garbage.

Signed-off-by: Jan Kara <jack@xxxxxxx>
---
 fs/udf/inode.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 0cb7d8fba2c8..2210e5eb1ea0 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -416,6 +416,9 @@ static int udf_map_block(struct inode *inode, struct udf_map_rq *map)
 	int err;
 	struct udf_inode_info *iinfo = UDF_I(inode);
 
+	if (WARN_ON_ONCE(iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB))
+		return -EFSCORRUPTED;
+
 	map->oflags = 0;
 	if (!(map->iflags & UDF_MAP_CREATE)) {
 		struct kernel_lb_addr eloc;
-- 
2.35.3