vfs rewrite lol fml

Test/HyperionOS-units/usr/lib/hunit/dir.unit

@@ -0,0 +1,3 @@
+local fs = require("sys.fs")
+assert(fs.mkdir("/tmp/hunit/testdir"), "failed to make directory")
+assert(fs.isDir("/tmp/hunit/testdir"), "directory does not exist")

Test/HyperionOS-units/usr/lib/hunit/file.unit

@@ -0,0 +1,10 @@
+local fd = syscall.VFS_open("/tmp/hunit/testfile.txt", "w")
+syscall.VFS_write(fd, "This is a test file")
+syscall.VFS_close(fd)
+local fd = syscall.VFS_open("/tmp/hunit/testfile.txt", "r")
+local text = syscall.VFS_read(fd, 64)
+syscall.VFS_close(fd)
+
+if text~="This is a test file" then
+    error("File failed to write/read")
+end