From b5b374eab11ef60d789e28bc36c18e2d08703212 Mon Sep 17 00:00:00 2001 From: Steve French Date: Mon, 6 Oct 2014 01:01:03 -0500 Subject: Workaround Mac server problem Mac server returns that they support CIFS Unix Extensions but doesn't actually support QUERY_FILE_UNIX_BASIC so mount fails. Workaround this problem by disabling use of Unix CIFS protocol extensions if server returns an EOPNOTSUPP error on QUERY_FILE_UNIX_BASIC during mount. Signed-off-by: Steve French --- fs/cifs/inode.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index c23bdec805c5..197cb503d528 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -960,11 +960,18 @@ struct inode *cifs_root_iget(struct super_block *sb) struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); xid = get_xid(); - if (tcon->unix_ext) + if (tcon->unix_ext) { rc = cifs_get_inode_info_unix(&inode, "", sb, xid); - else - rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL); + /* some servers mistakenly claim POSIX support */ + if (rc != -EOPNOTSUPP) + goto iget_no_retry; + cifs_dbg(VFS, "server does not support POSIX extensions"); + tcon->unix_ext = false; + } + + rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL); +iget_no_retry: if (!inode) { inode = ERR_PTR(rc); goto out; -- cgit v1.2.3