1 files changed, 28 insertions, 0 deletions
diff --git a/syscall.c b/syscall.c
index 5cfc20b..0ef2670 100644
--- a/syscall.c
+++ b/syscall.c
@@ -290,6 +290,31 @@ sys_mknod(void)
 }
 
 int
+sys_mkdir(void)
+{
+  struct proc *cp = curproc[cpu()];
+  struct inode *nip;
+  uint arg0;
+  int l;
+
+  if(fetcharg(0, &arg0) < 0) 
+    return -1;
+
+  if((l = checkstring(arg0)) < 0)
+    return -1;
+
+  if(l >= DIRSIZ)
+    return -1;
+
+  nip = mknod (cp->mem + arg0, T_DIR, 0, 0);
+
+  // XXX put . and .. in
+
+  iput(nip);
+  return (nip == 0) ? -1 : 0;
+}
+
+int
 sys_unlink(void)
 {
   struct proc *cp = curproc[cpu()];
@@ -561,6 +586,9 @@ syscall(void)
   case SYS_link:
     ret = sys_link();
     break;
+  case SYS_mkdir:
+    ret = sys_mkdir();
+    break;
   default:
     cprintf("unknown sys call %d\n", num);
     // XXX fault