set size for directories correctly in wdir and mkfs

mkdir
ls shows stat info for each dir entry

1 files changed, 11 insertions, 1 deletions

diff --git a/syscall.c b/syscall.c
index 0ef2670..0a017c7 100644
--- a/syscall.c
+++ b/syscall.c
@@ -294,8 +294,10 @@ sys_mkdir(void)
 {
   struct proc *cp = curproc[cpu()];
   struct inode *nip;
+  struct inode *pip;
   uint arg0;
   int l;
+  struct dirent de;
 
   if(fetcharg(0, &arg0) < 0) 
     return -1;
@@ -308,7 +310,15 @@ sys_mkdir(void)
 
   nip = mknod (cp->mem + arg0, T_DIR, 0, 0);
 
-  // XXX put . and .. in
+  de.name[0] = '.';
+  de.inum = nip->inum;
+  writei (nip, (char *) &de, 0, sizeof(de));
+
+  pip = namei(".", NAMEI_LOOKUP, 0);
+  de.inum = pip->inum;
+  de.name[1] = '.';
+  iput(pip);
+  writei (nip, (char *) &de, sizeof(de), sizeof(de));
 
   iput(nip);
   return (nip == 0) ? -1 : 0;