Small tweaks

Lots of new code imported.

src/lib9p/ftest.c

@@ -0,0 +1,29 @@
+#include <u.h>
+#include <libc.h>
+#include <auth.h>
+#include <fcall.h>
+#include "9p.h"
+
+void
+main(void)
+{
+	Tree *t;
+	File *hello, *goodbye, *world;
+
+	t = mktree();
+
+	hello = fcreate(t->root, "hello", CHDIR|0777);
+	assert(hello != nil);
+
+	goodbye = fcreate(t->root, "goodbye", CHDIR|0777);
+	assert(goodbye != nil);
+
+	world = fcreate(hello, "world", 0666);
+	assert(world != nil);
+	world = fcreate(goodbye, "world", 0666);
+	assert(world != nil);
+	fdump(t->root, 0);
+
+	fremove(world);
+	fdump(t->root, 0);
+}