1 files changed, 74 insertions, 0 deletions
diff --git a/libdiskfs/node-times.c b/libdiskfs/node-times.c
new file mode 100644
index 00000000..67f0142e
--- /dev/null
+++ b/libdiskfs/node-times.c
@@ -0,0 +1,74 @@
+/* Process st_?tim updates marked for a diskfs node.
+
+   Copyright (C) 1994, 1996, 1999, 2000, 2007, 2009 Free Software Foundation,
+   Inc.
+
+This file is part of the GNU Hurd.
+
+The GNU Hurd 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.
+
+The GNU Hurd 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 the GNU Hurd; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Written by Michael I. Bushnell.  */
+
+#include "priv.h"
+#include <maptime.h>
+
+/* If disk is not readonly and the noatime option is not enabled, set
+   NP->dn_set_atime.  */
+void
+diskfs_set_node_atime (struct node *np)
+{
+  if (!_diskfs_noatime && !diskfs_check_readonly ())
+    np->dn_set_atime = 1;
+}
+
+/* If NP->dn_set_ctime is set, then modify NP->dn_stat.st_ctim
+   appropriately; do the analogous operation for atime and mtime as well. */
+void
+diskfs_set_node_times (struct node *np)
+{
+  struct timeval t;
+
+  if (!np->dn_set_mtime && !np->dn_set_atime && !np->dn_set_ctime)
+    return;
+
+  maptime_read (diskfs_mtime, &t);
+
+  /* We are careful to test and reset each of these individually, so there
+     is no race condition where a dn_set_?time flag setting gets lost.  It
+     is not a problem to have the kind of race where the flag is set after
+     we've tested it and done nothing--as long as the flag remains set so
+     the update will happen at the next call.  */
+  if (np->dn_set_mtime)
+    {
+      np->dn_stat.st_mtim.tv_sec = t.tv_sec;
+      np->dn_stat.st_mtim.tv_nsec = t.tv_usec * 1000;
+      np->dn_stat_dirty = 1;
+      np->dn_set_mtime = 0;
+    }
+  if (np->dn_set_atime)
+    {
+      np->dn_stat.st_atim.tv_sec = t.tv_sec;
+      np->dn_stat.st_atim.tv_nsec = t.tv_usec * 1000;
+      np->dn_stat_dirty = 1;
+      np->dn_set_atime = 0;
+    }
+  if (np->dn_set_ctime)
+    {
+      np->dn_stat.st_ctim.tv_sec = t.tv_sec;
+      np->dn_stat.st_ctim.tv_nsec = t.tv_usec * 1000;
+      np->dn_stat_dirty = 1;
+      np->dn_set_ctime = 0;
+    }
+}