1 files changed, 73 insertions, 0 deletions
diff --git a/libnetfs/io-write.c b/libnetfs/io-write.c
new file mode 100644
index 00000000..26c3c297
--- /dev/null
+++ b/libnetfs/io-write.c
@@ -0,0 +1,73 @@
+/* 
+   Copyright (C) 1995, 1996 Free Software Foundation, Inc.
+   Written by Michael I. Bushnell, p/BSG.
+
+   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 this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
+
+#include "netfs.h"
+#include "io_S.h"
+#include <fcntl.h>
+
+error_t
+netfs_S_io_write (struct protid *user,
+		  char *data,
+		  mach_msg_type_number_t datalen,
+		  off_t offset,
+		  mach_msg_type_number_t *amount)
+{
+  error_t err;
+  off_t off = offset;
+  struct node *np;
+  
+  if (!user)
+    return EOPNOTSUPP;
+  
+  np = user->po->np;
+
+  mutex_lock (&np->lock);
+  if ((user->po->openstat & O_WRITE) == 0)
+    {
+      mutex_unlock (&np->lock);
+      return EBADF;
+    }
+
+  *amount = datalen;
+
+  if (off == -1)
+    {
+      if (user->po->openstat & O_APPEND)
+	{
+	  err = netfs_validate_stat (np, user->user);
+	  if (err)
+	    {
+	      mutex_unlock (&np->lock);
+	      return err;
+	    }
+	  user->po->filepointer = np->nn_stat.st_size;
+	}
+      off = user->po->filepointer;
+    }
+
+  err =  netfs_attempt_write (user->user, np, off, amount, data);
+  if (offset == -1 && !err)
+    user->po->filepointer += *amount;
+  mutex_unlock (&np->lock);
+  
+  return err;
+}
+
+