Workaround Mac server problem (b5b374ea) · Commits · 戴 / test

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 <smfrench@gmail.com>

fs/cifs/inode.c

+10 −3

Original line number	Diff line number	Diff line
		@@ -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
		/* 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;

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