1 files changed, 68 insertions, 0 deletions
diff --git a/libdiskfs/dir-init.c b/libdiskfs/dir-init.c
new file mode 100644
index 00000000..2cba3a4b
--- /dev/null
+++ b/libdiskfs/dir-init.c
@@ -0,0 +1,68 @@
+/* 
+   Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Locked node DP is a new directory; add whatever links are necessary
+   to give it structure; its parent is the (locked) node PDP. 
+   This routine may not call diskfs_lookup on PDP.  The new directory
+   must be clear within the meaning of diskfs_dirempty. 
+   CRED identifies the user making the call.  */
+error_t
+diskfs_init_dir (struct node *dp, struct node *pdp, struct protid *cred)
+{
+  struct dirstat *ds = alloca (diskfs_dirstat_size);
+  struct node *foo;
+  error_t err;
+
+  /* Fabricate a protid that represents root credentials. */
+  static uid_t zero = 0;
+  static struct idvec vec = {&zero, 1, 1};
+  static struct iouser user = {&vec, &vec, 0};
+  struct protid lookupcred = {{0, 0, 0, 0}, &user, cred->po, 0, 0};
+
+  /* New links */
+  if (pdp->dn_stat.st_nlink == diskfs_link_max - 1)
+    return EMLINK;
+
+  dp->dn_stat.st_nlink++;	/* for `.' */
+  dp->dn_set_ctime = 1;
+  err = diskfs_lookup (dp, ".", CREATE, &foo, ds, &lookupcred);
+  assert (err == ENOENT);
+  err = diskfs_direnter (dp, ".", dp, ds, cred);
+  if (err)
+    {
+      dp->dn_stat.st_nlink--;
+      dp->dn_set_ctime = 1;
+      return err;
+    }
+
+  pdp->dn_stat.st_nlink++;	/* for `..' */
+  pdp->dn_set_ctime = 1;
+  err = diskfs_lookup (dp, "..", CREATE, &foo, ds, &lookupcred);
+  assert (err == ENOENT);
+  err = diskfs_direnter (dp, "..", pdp, ds, cred);
+  if (err)
+    {
+      pdp->dn_stat.st_nlink--;
+      pdp->dn_set_ctime = 1;
+      return err;
+    }
+
+  diskfs_node_update (dp, 1);
+  return 0;
+}