This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / security / keys / compat.c

diff --git a/security/keys/compat.c b/security/keys/compat.c
new file mode 100644 (file)
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--- /dev/null
+++ b/security/keys/compat.c
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+/* compat.c: 32-bit compatibility syscall for 64-bit systems
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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 of the License, or (at your option) any later version.
+ */
+
+#include <linux/sched.h>
+#include <linux/syscalls.h>
+#include <linux/keyctl.h>
+#include <linux/compat.h>
+#include "internal.h"
+
+/*****************************************************************************/
+/*
+ * the key control system call, 32-bit compatibility version for 64-bit archs
+ * - this should only be called if the 64-bit arch uses weird pointers in
+ *   32-bit mode or doesn't guarantee that the top 32-bits of the argument
+ *   registers on taking a 32-bit syscall are zero
+ * - if you can, you should call sys_keyctl directly
+ */
+asmlinkage long compat_sys_keyctl(u32 option,
+                             u32 arg2, u32 arg3, u32 arg4, u32 arg5)
+{
+       switch (option) {
+       case KEYCTL_GET_KEYRING_ID:
+               return keyctl_get_keyring_ID(arg2, arg3);
+
+       case KEYCTL_JOIN_SESSION_KEYRING:
+               return keyctl_join_session_keyring(compat_ptr(arg3));
+
+       case KEYCTL_UPDATE:
+               return keyctl_update_key(arg2, compat_ptr(arg3), arg4);
+
+       case KEYCTL_REVOKE:
+               return keyctl_revoke_key(arg2);
+
+       case KEYCTL_DESCRIBE:
+               return keyctl_describe_key(arg2, compat_ptr(arg3), arg4);
+
+       case KEYCTL_CLEAR:
+               return keyctl_keyring_clear(arg2);
+
+       case KEYCTL_LINK:
+               return keyctl_keyring_link(arg2, arg3);
+
+       case KEYCTL_UNLINK:
+               return keyctl_keyring_unlink(arg2, arg3);
+
+       case KEYCTL_SEARCH:
+               return keyctl_keyring_search(arg2, compat_ptr(arg3),
+                                            compat_ptr(arg4), arg5);
+
+       case KEYCTL_READ:
+               return keyctl_read_key(arg2, compat_ptr(arg3), arg4);
+
+       case KEYCTL_CHOWN:
+               return keyctl_chown_key(arg2, arg3, arg4);
+
+       case KEYCTL_SETPERM:
+               return keyctl_setperm_key(arg2, arg3);
+
+       case KEYCTL_INSTANTIATE:
+               return keyctl_instantiate_key(arg2, compat_ptr(arg3), arg4,
+                                             arg5);
+
+       case KEYCTL_NEGATE:
+               return keyctl_negate_key(arg2, arg3, arg4);
+
+       default:
+               return -EOPNOTSUPP;
+       }
+
+} /* end compat_sys_keyctl() */