--- a/TaskManager/kernel/schedule/SchedTask.cc	Wed Sep 30 11:37:15 2009 +0900
+++ b/TaskManager/kernel/schedule/SchedTask.cc	Thu Oct 01 17:33:58 2009 +0900
@@ -6,6 +6,7 @@
 #include "DmaManager.h"
 #include "error.h"
 #include "TaskManager.h"
+#include <stdarg.h>
 
 extern Scheduler::TaskObject task_list[MAX_TASK_OBJECT];
 
@@ -49,6 +50,9 @@
     __renew_flag  = 0;
     __cur_index   = 0;
     __flag_renewTask = SCHED_TASK_NORMAL;
+    this->stdout_ = stdout;
+    this->stderr_ = stderr;
+    this->stdin_ = stdin;
 
     ex_init  = &SchedTask::ex_init_normal;
     ex_read  = &SchedTask::ex_read_normal;
@@ -609,6 +613,28 @@
     __scheduler->wait_segment(s);
 }
 
+/* system call */
+
+int 
+SchedTask::fprintf(FILE * stream, const char * format, ...)
+{
+    va_list ap;
+    va_start(ap,format);
+    int ret = vfprintf(stream,format, ap);
+    va_end(ap);
+    return ret;
+}
+
+int 
+SchedTask::printf(const char * format, ...)
+{
+    va_list ap;
+    va_start(ap,format);
+    int ret= vfprintf(stdout,format, ap);
+    va_end(ap);
+    return ret;
+}
+
 
 
 /* end */