1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/sysproc.c b/kernel/sysproc.c
index 88644b2..4cf0697 100644
--- a/kernel/sysproc.c
+++ b/kernel/sysproc.c
@@ -100,3 +100,21 @@ sys_uptime(void)
   release(&tickslock);
   return xticks;
 }
+
+uint64
+sys_trace(void)
+{
+  argint(0, &myproc()->trace_mask);
+
+  return -(myproc()->trace_mask <= 1);
+}
+
+uint64
+sys_sysinfo(void)
+{
+  uint64 si; // user pointer to struct sysinfo
+
+  argaddr(0, &si);
+  return sys_info(si);
+}
+