fixed task cleanup fd errors

Src/Hyperion-core/lib/sys/fs

@@ -15,8 +15,7 @@ function fs.open(path, mode)
         end,
         flush=function()
             -- close and reopen file to flush buffers
-            syscall.close(fd)
-            fd=syscall.open(path,mode)
+            syscall.fsync(fd)
         end
     }
     if mode=="r" then

Src/Hyperion-kernel/lib/modules/Hyperion/10_vfs.kmod

@@ -339,7 +339,6 @@ end
 
 -- Write
 function vfs.write(fd, content)
-    kernel.log(tostring(fd).."|"..content)
     local task = kernel.currentTask
     local file = task.fd[fd]
     if not file then error("EBADF") end

Src/Hyperion-kernel/lib/modules/Hyperion/45_hypervisor.kmod

@@ -234,6 +234,10 @@ kernel._G.sleep = function(...) coroutine.yield("syscall", "sleep", ...) end
 local function reapDeadTasks()
     for pid, task in pairs(tasks) do
         if task.status == "Z" and not task.reapTime then
+            kernel.currentTask = task
+            kernel.username = task.username
+            kernel.uid = task.uid
+            kernel.process = task.name
             task.coro = nil
             task.ivs = nil
             task.vs = nil
@@ -302,7 +306,7 @@ function kernel.main()
                 kernel.uid = task.uid
                 kernel.process = task.name
                 N = N + 1
-                
+
                 -- assign adaptive time slice
                 task.timeSlice = math.min(Tmax, math.max(Tmin, B / (N ^ alpha)))