Tue Feb 16 05:37:03 1999 Thomas Bushnell, BSG <tb@mit.edu>

	* io-revoke.c: New file.
	* Makefile (IOSRCS): Add iorevoke.c.

3 files changed, 68 insertions, 2 deletions

diff --git a/libnetfs/ChangeLog b/libnetfs/ChangeLog
index 6774fa1b..dcc06694 100644
--- a/libnetfs/ChangeLog
+++ b/libnetfs/ChangeLog
@@ -1,3 +1,8 @@
+Tue Feb 16 05:37:03 1999  Thomas Bushnell, BSG  <tb@mit.edu>
+
+	* io-revoke.c: New file.
+	* Makefile (IOSRCS): Add iorevoke.c.
+
 Sun Jan 31 18:27:42 1999  Thomas Bushnell, BSG  <tb@mit.edu>
 
 	* file-utimes.c (netfs_S_file_utimes): Understand new semantics
diff --git a/libnetfs/Makefile b/libnetfs/Makefile
index 92f223e0..26c71f63 100644
--- a/libnetfs/Makefile
+++ b/libnetfs/Makefile
@@ -1,5 +1,5 @@
 # 
-#   Copyright (C) 1995, 1996, 1997 Free Software Foundation
+#   Copyright (C) 1995, 1996, 1997, 1999 Free Software Foundation
 #   Written by Michael I. Bushnell.
 #
 #   This file is part of the GNU Hurd.
@@ -36,7 +36,7 @@ IOSRCS=	io-read.c io-readable.c io-seek.c io-write.c io-stat.c io-async.c     \
 	io-set-all-openmodes.c io-get-openmodes.c io-set-some-openmodes.c     \
 	io-clear-some-openmodes.c io-mod-owner.c io-get-owner.c io-select.c   \
 	io-get-icky-async-id.c io-reauthenticate.c io-restrict-auth.c	      \
-	io-duplicate.c iostubs.c io-identity.c
+	io-duplicate.c iostubs.c io-identity.c io-revoke.c
 
 FSYSSRCS= fsys-syncfs.c fsys-getroot.c fsys-get-options.c fsys-set-options.c \
 	fsysstubs.c 
diff --git a/libnetfs/io-revoke.c b/libnetfs/io-revoke.c
new file mode 100644
index 00000000..05f79f12
--- /dev/null
+++ b/libnetfs/io-revoke.c
@@ -0,0 +1,61 @@
+/* 
+   Copyright (C) 1999 Free Software Foundation
+   Written by Thomas Bushnell, BSG.
+
+   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 "netfs.h"
+#include "io_S.h"
+
+/* Implement io_revoke as described in <hurd/io.defs>. */
+kern_return_t
+netfs_S_io_revoke (struct protid *cred)
+{
+  error_t err;
+  struct node *np;
+
+  error_t 
+    iterator_function (void *port)
+    {
+      struct protid *user = port;
+      
+      if ((user != cred) && (user->po->np == np))
+	ports_destroy_right (user);
+    }
+
+  if (!cred)
+    return EOPNOTSUPP;
+  
+  np = cred->po->np;
+
+  mutex_lock (&np->lock);
+  
+  err = netfs_validate_stat (np, cred);
+  if (!err)
+    err = fshelp_isowner (&np->dn_stat, cred->user);
+  if (err)
+    {
+      mutex_unlock (&np->lock);
+      return err;
+    }
+  
+  ports_bucket_iterate (diskfs_port_bucket, iterator_function);
+
+  mutex_unlock (&np->lock);
+
+  return 0;
+}
+
+