1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/sysfile.c b/kernel/sysfile.c
index 7768d20..015c942 100644
--- a/kernel/sysfile.c
+++ b/kernel/sysfile.c
@@ -341,6 +341,10 @@ sys_open(void)
   f->readable = !(omode & O_WRONLY);
   f->writable = (omode & O_WRONLY) || (omode & O_RDWR);
 
+  if((omode & O_TRUNC) && ip->type == T_FILE){
+    itrunc(ip);
+  }
+
   iunlock(ip);
   end_op();