Yaffs sets the default mode of the filesystem root dir to 0666. If used
for a rootfs this actually breaks various things (because / cannot be enumerated)

Every other rootfs I have looked at (admittedly all ext2/3) sets the
default root node mode to 0755. Is there good reason why the yaffs
default is different? It doesn't even seem to add any security because
every has write access with 0666.

This patch fixes it for us, but it just feels like something that
maybe should be in upstream:

Index: linux-2.6.29.1/fs/yaffs2/yportenv.h
===================================================================
--- linux-2.6.29.1.orig/fs/yaffs2/yportenv.h    2009-09-15 18:30:04.000000000 +0100
+++ linux-2.6.29.1/fs/yaffs2/yportenv.h 2009-09-15 18:33:16.000000000 +0100
@@ -74,7 +74,7 @@
 /* KR - added for use in scan so processes aren't blocked indefinitely. */
 #define YYIELD() schedule()

-#define YAFFS_ROOT_MODE                        0666
+#define YAFFS_ROOT_MODE                        0755
 #define YAFFS_LOSTNFOUND_MODE          0666

 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))


Wookey
-- 
Principal hats:  iEndian - Balloonboard - Toby Churchill - Emdebian
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