mkdir almost working.

Added changes to pathname lookup code so that the root
directory special case is handled properly.

tasks/fs0/include/path.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2008 Bahadir Balban
+ *
+ * Path lookup related information
+ */
+#ifndef __PATH_H__
+#define __PATH_H__
+
+/*
+ * FIXME:
+ * These ought to be strings and split/comparison functions should
+ * always use strings because formats like UTF-8 wouldn't work.
+ */
+#define VFS_CHAR_SEP		'/'
+#define VFS_STR_ROOTDIR		"/"
+#define VFS_STR_PARDIR		".."
+#define VFS_STR_CURDIR		"."
+#define VFS_STR_XATDIR		"...."
+
+struct pathdata {
+	struct tcb *task;
+	int root;
+	char *path;
+};
+
+#endif /* __PATH_H__ */