cifs: quirk for STATUS_OBJECT_NAME_INVALID returned for non-ASCII dfs refs
Windows SMB server responds with STATUS_OBJECT_NAME_INVALID code to
SMB2 QUERY_INFO request for "\<server>\<dfsname>\<linkpath>" DFS reference,
where <dfsname> contains non-ASCII unicode symbols.
Check such DFS reference and emulate -EREMOTE if it is actual.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215440
Signed-off-by: Eugene Korenevsky <ekorenevsky@astralinux.ru>
Signed-off-by: Steve French <stfrench@microsoft.com>
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 279622e..baa197e 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -952,6 +952,12 @@ cifs_get_inode_info(struct inode **inode,
rc = server->ops->query_path_info(xid, tcon, cifs_sb,
full_path, tmp_data,
&adjust_tz, &is_reparse_point);
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ if (rc == -ENOENT && is_tcon_dfs(tcon))
+ rc = cifs_dfs_query_info_nonascii_quirk(xid, tcon,
+ cifs_sb,
+ full_path);
+#endif
data = tmp_data;
}