If the offset is equal to or greater than the end of
file, an error is returned. For such operations (i.e., inserting
a hole at the end of file), ftruncate(2) should be used.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>
---
fs/ntfs3/attrib.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c
index 0d13da5523b1..68d1c61fe3b5 100644
--- a/fs/ntfs3/attrib.c
+++ b/fs/ntfs3/attrib.c
@@ -2373,8 +2373,13 @@ int attr_insert_range(struct ntfs_inode *ni, u64 vbo, u64 bytes)
mask = (sbi->cluster_size << attr_b->nres.c_unit) - 1;
}
- if (vbo > data_size) {
- /* Insert range after the file size is not allowed. */
+ if (vbo >= data_size) {
+ /*
+ * Insert range after the file size is not allowed.
+ * If the offset is equal to or greater than the end of
+ * file, an error is returned. For such operations (i.e., inserting
+ * a hole at the end of file), ftruncate(2) should be used.
+ */
return -EINVAL;
}
--
2.34.1
