1// SPDX-License-Identifier: GPL-2.0-or-later
2/* 32-bit compatibility syscall for 64-bit systems
3 *
4 * Copyright (C) 2004-5 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7
8#include <linux/syscalls.h>
9#include <linux/keyctl.h>
10#include <linux/compat.h>
11#include <linux/slab.h>
12#include "internal.h"
13
14/*
15 * The key control system call, 32-bit compatibility version for 64-bit archs
16 */
17COMPAT_SYSCALL_DEFINE5(keyctl, u32, option,
18		       u32, arg2, u32, arg3, u32, arg4, u32, arg5)
19{
20	switch (option) {
21	case KEYCTL_GET_KEYRING_ID:
22		return keyctl_get_keyring_ID(arg2, arg3);
23
24	case KEYCTL_JOIN_SESSION_KEYRING:
25		return keyctl_join_session_keyring(compat_ptr(arg2));
26
27	case KEYCTL_UPDATE:
28		return keyctl_update_key(arg2, compat_ptr(arg3), arg4);
29
30	case KEYCTL_REVOKE:
31		return keyctl_revoke_key(arg2);
32
33	case KEYCTL_DESCRIBE:
34		return keyctl_describe_key(arg2, compat_ptr(arg3), arg4);
35
36	case KEYCTL_CLEAR:
37		return keyctl_keyring_clear(arg2);
38
39	case KEYCTL_LINK:
40		return keyctl_keyring_link(arg2, arg3);
41
42	case KEYCTL_UNLINK:
43		return keyctl_keyring_unlink(arg2, arg3);
44
45	case KEYCTL_SEARCH:
46		return keyctl_keyring_search(arg2, compat_ptr(arg3),
47					     compat_ptr(arg4), arg5);
48
49	case KEYCTL_READ:
50		return keyctl_read_key(arg2, compat_ptr(arg3), arg4);
51
52	case KEYCTL_CHOWN:
53		return keyctl_chown_key(arg2, arg3, arg4);
54
55	case KEYCTL_SETPERM:
56		return keyctl_setperm_key(arg2, arg3);
57
58	case KEYCTL_INSTANTIATE:
59		return keyctl_instantiate_key(arg2, compat_ptr(arg3), arg4,
60					      arg5);
61
62	case KEYCTL_NEGATE:
63		return keyctl_negate_key(arg2, arg3, arg4);
64
65	case KEYCTL_SET_REQKEY_KEYRING:
66		return keyctl_set_reqkey_keyring(arg2);
67
68	case KEYCTL_SET_TIMEOUT:
69		return keyctl_set_timeout(arg2, arg3);
70
71	case KEYCTL_ASSUME_AUTHORITY:
72		return keyctl_assume_authority(arg2);
73
74	case KEYCTL_GET_SECURITY:
75		return keyctl_get_security(arg2, compat_ptr(arg3), arg4);
76
77	case KEYCTL_SESSION_TO_PARENT:
78		return keyctl_session_to_parent();
79
80	case KEYCTL_REJECT:
81		return keyctl_reject_key(arg2, arg3, arg4, arg5);
82
83	case KEYCTL_INSTANTIATE_IOV:
84		return keyctl_instantiate_key_iov(arg2, compat_ptr(arg3), arg4,
85						  arg5);
86
87	case KEYCTL_INVALIDATE:
88		return keyctl_invalidate_key(arg2);
89
90	case KEYCTL_GET_PERSISTENT:
91		return keyctl_get_persistent(arg2, arg3);
92
93	case KEYCTL_DH_COMPUTE:
94		return compat_keyctl_dh_compute(compat_ptr(arg2),
95						compat_ptr(arg3),
96						arg4, compat_ptr(arg5));
97
98	case KEYCTL_RESTRICT_KEYRING:
99		return keyctl_restrict_keyring(arg2, compat_ptr(arg3),
100					       compat_ptr(arg4));
101
102	case KEYCTL_PKEY_QUERY:
103		if (arg3 != 0)
104			return -EINVAL;
105		return keyctl_pkey_query(arg2,
106					 compat_ptr(arg4),
107					 compat_ptr(arg5));
108
109	case KEYCTL_PKEY_ENCRYPT:
110	case KEYCTL_PKEY_DECRYPT:
111	case KEYCTL_PKEY_SIGN:
112		return keyctl_pkey_e_d_s(option,
113					 compat_ptr(arg2), compat_ptr(arg3),
114					 compat_ptr(arg4), compat_ptr(arg5));
115
116	case KEYCTL_PKEY_VERIFY:
117		return keyctl_pkey_verify(compat_ptr(arg2), compat_ptr(arg3),
118					  compat_ptr(arg4), compat_ptr(arg5));
119
120	case KEYCTL_MOVE:
121		return keyctl_keyring_move(arg2, arg3, arg4, arg5);
122
123	case KEYCTL_CAPABILITIES:
124		return keyctl_capabilities(compat_ptr(arg2), arg3);
125
126	case KEYCTL_WATCH_KEY:
127		return keyctl_watch_key(arg2, arg3, arg4);
128
129	default:
130		return -EOPNOTSUPP;
131	}
132}
133