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[linux-2.6/verdex.git] / security / keys / compat.c
blob3303673c636ef3b735ae48fdf2992d0abe24c11a
1 /* compat.c: 32-bit compatibility syscall for 64-bit systems
3 * Copyright (C) 2004-5 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <linux/sched.h>
13 #include <linux/syscalls.h>
14 #include <linux/keyctl.h>
15 #include <linux/compat.h>
16 #include "internal.h"
18 /*****************************************************************************/
20 * the key control system call, 32-bit compatibility version for 64-bit archs
21 * - this should only be called if the 64-bit arch uses weird pointers in
22 * 32-bit mode or doesn't guarantee that the top 32-bits of the argument
23 * registers on taking a 32-bit syscall are zero
24 * - if you can, you should call sys_keyctl directly
26 asmlinkage long compat_sys_keyctl(u32 option,
27 u32 arg2, u32 arg3, u32 arg4, u32 arg5)
29 switch (option) {
30 case KEYCTL_GET_KEYRING_ID:
31 return keyctl_get_keyring_ID(arg2, arg3);
33 case KEYCTL_JOIN_SESSION_KEYRING:
34 return keyctl_join_session_keyring(compat_ptr(arg2));
36 case KEYCTL_UPDATE:
37 return keyctl_update_key(arg2, compat_ptr(arg3), arg4);
39 case KEYCTL_REVOKE:
40 return keyctl_revoke_key(arg2);
42 case KEYCTL_DESCRIBE:
43 return keyctl_describe_key(arg2, compat_ptr(arg3), arg4);
45 case KEYCTL_CLEAR:
46 return keyctl_keyring_clear(arg2);
48 case KEYCTL_LINK:
49 return keyctl_keyring_link(arg2, arg3);
51 case KEYCTL_UNLINK:
52 return keyctl_keyring_unlink(arg2, arg3);
54 case KEYCTL_SEARCH:
55 return keyctl_keyring_search(arg2, compat_ptr(arg3),
56 compat_ptr(arg4), arg5);
58 case KEYCTL_READ:
59 return keyctl_read_key(arg2, compat_ptr(arg3), arg4);
61 case KEYCTL_CHOWN:
62 return keyctl_chown_key(arg2, arg3, arg4);
64 case KEYCTL_SETPERM:
65 return keyctl_setperm_key(arg2, arg3);
67 case KEYCTL_INSTANTIATE:
68 return keyctl_instantiate_key(arg2, compat_ptr(arg3), arg4,
69 arg5);
71 case KEYCTL_NEGATE:
72 return keyctl_negate_key(arg2, arg3, arg4);
74 case KEYCTL_SET_REQKEY_KEYRING:
75 return keyctl_set_reqkey_keyring(arg2);
77 default:
78 return -EOPNOTSUPP;
81 } /* end compat_sys_keyctl() */