1 files changed, 45 insertions, 3 deletions
diff --git a/libdiskfs/file-chg.c b/libdiskfs/file-chg.c
index 27d932e6..e9535591 100644
--- a/libdiskfs/file-chg.c
+++ b/libdiskfs/file-chg.c
@@ -17,11 +17,53 @@
 
 #include "priv.h"
 #include "fs_S.h"
+#include "ourfs_notify_U.h"
 
 kern_return_t
-diskfs_S_file_notice_changes (struct protid *cred __attribute__ ((unused)),
-			      mach_port_t notify __attribute__ ((unused)))
+diskfs_S_file_notice_changes (struct protid *cred, mach_port_t notify)
 {
-  return EOPNOTSUPP;
+  error_t err;
+  struct modreq *req;
+  struct node *np;
+  
+  if (!cred)
+    return EOPNOTSUPP;
+
+  np = cred->po->np;
+  mutex_lock (&np->lock);
+  err = nowait_file_changed (notify, FILE_CHANGED_NULL, 0, 0);
+  if (err)
+    {
+      mutex_unlock (&np->lock);
+      return err;
+    }
+  req = malloc (sizeof (struct modreq));
+  req->port = notify;
+  req->next = np->filemod_reqs;
+  np->filemod_reqs = req;
+  mutex_unlock (&np->lock);
+  return 0;
 }
 
+void
+diskfs_notice_filechange (struct node *dp, enum file_changed_type type,
+			  off_t start, off_t end)
+{
+  error_t err;
+  struct modreq **preq;
+  
+  preq = &dp->filemod_reqs;
+  while (*preq)
+    {
+      struct modreq *req = *preq;
+      err = nowait_file_changed (req->port, type, start, end);
+      if (err)
+	{			/* remove notify port */
+	  *preq = req->next;
+	  mach_port_deallocate (mach_task_self (), req->port);
+	  free (req);
+	}
+      else
+	preq = &req->next;
+    }
+}