diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index b6c6a3629b07..c7ebeee38c67 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2937,6 +2937,24 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); remote_path_check: +#ifdef CONFIG_CIFS_DFS_UPCALL + /* + * Perform an unconditional check for whether there are DFS + * referrals for this path without prefix, to provide support + * for DFS referrals from w2k8 servers which don't seem to respond + * with PATH_NOT_COVERED to requests that include the prefix. + * Chase the referral if found, otherwise continue normally. + */ + if (referral_walks_count == 0) { + int refrc = expand_dfs_referral(xid, pSesInfo, volume_info, + cifs_sb, &mount_data, false); + if (!refrc) { + referral_walks_count++; + goto try_mount_again; + } + } +#endif + /* check if a whole path (including prepath) is not remote */ if (!rc && tcon) { /* build_path_to_root works only when we have a valid tcon */