X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs%2F.git;a=blobdiff_plain;f=direct%2Fyaffsfs.c;h=207c06930f24226bbb99e925b72919849ea1e58d;hp=f4dfdcb6055a305890b4a201a78dbbcb2668fb57;hb=d48b3f2cc376fdf9201ae430baba8532c01b05b1;hpb=f5b76bfb34c6b0b5e42a4247dc2df3014a70a425

diff --git a/direct/yaffsfs.c b/direct/yaffsfs.c
index f4dfdcb..207c069 100644
--- a/direct/yaffsfs.c
+++ b/direct/yaffsfs.c
@@ -25,7 +25,7 @@
 #endif
 
 
-const char *yaffsfs_c_version="$Id: yaffsfs.c,v 1.5 2003-03-11 05:16:53 charles Exp $";
+const char *yaffsfs_c_version="$Id: yaffsfs.c,v 1.6 2003-03-11 09:54:40 charles Exp $";
 
 // configurationList is the list of devices that are supported
 static yaffsfs_DeviceConfiguration *yaffsfs_configurationList;
@@ -739,27 +739,51 @@ int yaffs_rename(const char *oldPath, const char *newPath)
 {
 	yaffs_Object *olddir = NULL;
 	yaffs_Object *newdir = NULL;
+	yaffs_Object *obj = NULL;
 	char *oldname;
 	char *newname;
 	int result= YAFFS_FAIL;
+	int renameAllowed = 1;
 	
 	yaffsfs_Lock();
 	
 	olddir = yaffsfs_FindDirectory(NULL,oldPath,&oldname,0);
 	newdir = yaffsfs_FindDirectory(NULL,newPath,&newname,0);
+	obj = yaffsfs_FindObject(NULL,oldPath,0);
 	
-	if(!olddir || !newdir)
+	if(!olddir || !newdir || !obj)
 	{
-		// bad handle
-		yaffsfs_SetError(-EBADF);		
+		// bad file
+		yaffsfs_SetError(-EBADF);	
+		renameAllowed = 0;	
 	}
 	else if(olddir->myDev != newdir->myDev)
 	{
 		// oops must be on same device
 		// todo error
 		yaffsfs_SetError(-EXDEV);
+		renameAllowed = 0;	
 	}
-	else
+	else if(obj && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
+	{
+		// It is a directory, check that it is not being renamed to 
+		// being its own decendent.
+		// Do this by tracing from the new directory back to the root, checking for obj
+		
+		yaffs_Object *xx = newdir;
+		
+		while( renameAllowed && xx)
+		{
+			if(xx == obj)
+			{
+				renameAllowed = 0;
+			}
+			xx = xx->parent;
+		}
+		if(!renameAllowed) yaffsfs_SetError(-EACCESS);
+	}
+	
+	if(renameAllowed)
 	{
 		result = yaffs_RenameObject(olddir,oldname,newdir,newname);
 	}