isofs: implement dmode option

Implement dmode option for iso9660 filesystem to allow setting of access
rights for directories on the filesystem.

Signed-off-by: Jan Kara <jack@suse.cz>
Cc: "Ilya N. Golubev" <gin@mo.msk.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/isofs/isofs.h b/fs/isofs/isofs.h
index f3213f9..d1bdf8ad 100644
--- a/fs/isofs/isofs.h
+++ b/fs/isofs/isofs.h
@@ -51,7 +51,8 @@
 	unsigned char s_hide;
 	unsigned char s_showassoc;
 
-	mode_t s_mode;
+	mode_t s_fmode;
+	mode_t s_dmode;
 	gid_t s_gid;
 	uid_t s_uid;
 	struct nls_table *s_nls_iocharset; /* Native language support table */