From a2809d0e16963fdf3984409e47f145cccb0c6821 Mon Sep 17 00:00:00 2001 From: Eugene Korenevsky Date: Fri, 14 Jan 2022 22:53:40 +0300 Subject: 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 "\\\" DFS reference, where 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 Signed-off-by: Steve French --- fs/cifs/connect.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 0f36deff790e..accce1b351c6 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3374,6 +3374,11 @@ static int is_path_remote(struct mount_ctx *mnt_ctx) rc = server->ops->is_path_accessible(xid, tcon, cifs_sb, full_path); +#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 if (rc != 0 && rc != -EREMOTE) { kfree(full_path); return rc; -- cgit v1.2.3