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

Message ID 20230301134641.11819-3-jack@suse.cz (mailing list archive)
State New, archived
Headers show
Series udf: Fix handling of in-ICB files | expand

Commit Message

Jan Kara March 1, 2023, 1:46 p.m. UTC 
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@suse.cz>
---
 fs/udf/inode.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

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;