From: Charles Manning <cdhmanning@gmail.com>
Date: Mon, 23 Aug 2010 22:12:15 +0000 (+1200)
Subject: yaffs Fix problem trying to mkdir a mountpt in yaffs direct
X-Git-Tag: pre-name-change~17^2~2
X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=commitdiff_plain;h=213dc0b42fbe8652e454bfdbf9f5c41c6eb4974c

yaffs Fix problem trying to mkdir a mountpt in yaffs direct

yaffs_mkdir would create a directory if you passed the name of
a mount point. This change fails such attempts with -EEXIST.

tested with:
"yaffs2"
"/yaffs2"
"/yaffs2/"
"/yaffs2///////"
"yaffs2////"

Signed-off-by: Charles Manning <cdhmanning@gmail.com>
---

diff --git a/direct/yaffsfs.c b/direct/yaffsfs.c
index d9be490..9ac08ab 100644
--- a/direct/yaffsfs.c
+++ b/direct/yaffsfs.c
@@ -1637,7 +1637,10 @@ int yaffs_mkdir(const YCHAR *path, mode_t mode)
 
 	yaffsfs_Lock();
 	parent = yaffsfs_FindDirectory(NULL,path,&name,0);
-	if(parent && parent->myDev->readOnly){
+	if(parent && yaffs_strnlen(name,5) == 0){
+		/* Trying to make the root itself */
+		yaffsfs_SetError(-EEXIST);
+	} else if(parent && parent->myDev->readOnly){
 		yaffsfs_SetError(-EINVAL);
 	} else {
 		if(parent)