From: Konstantin Komarov almaz.alexandrovich@paragon-software.com
[ Upstream commit 1918c10e137eae266b8eb0ab1cc14421dcb0e3e2 ]
Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ntfs3/record.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c index 938fc286963f..ac43e4a6d57d 100644 --- a/fs/ntfs3/record.c +++ b/fs/ntfs3/record.c @@ -509,8 +509,20 @@ bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, return false;
if (ni && is_attr_indexed(attr)) { - le16_add_cpu(&ni->mi.mrec->hard_links, -1); - ni->mi.dirty = true; + u16 links = le16_to_cpu(ni->mi.mrec->hard_links); + struct ATTR_FILE_NAME *fname = + attr->type != ATTR_NAME ? + NULL : + resident_data_ex(attr, + SIZEOF_ATTRIBUTE_FILENAME); + if (fname && fname->type == FILE_NAME_DOS) { + /* Do not decrease links count deleting DOS name. */ + } else if (!links) { + /* minor error. Not critical. */ + } else { + ni->mi.mrec->hard_links = cpu_to_le16(links - 1); + ni->mi.dirty = true; + } }
used -= asize;