1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* 32-bit compatibility syscall for 64-bit systems
4 * Copyright (C) 2004-5 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
8 #include <linux/syscalls.h>
9 #include <linux/keyctl.h>
10 #include <linux/compat.h>
11 #include <linux/slab.h>
15 * Instantiate a key with the specified compatibility multipart payload and
16 * link the key into the destination keyring if one is given.
18 * The caller must have the appropriate instantiation permit set for this to
19 * work (see keyctl_assume_authority). No other permissions are required.
21 * If successful, 0 will be returned.
23 static long compat_keyctl_instantiate_key_iov(
25 const struct compat_iovec __user
*_payload_iov
,
29 struct iovec iovstack
[UIO_FASTIOV
], *iov
= iovstack
;
36 ret
= compat_import_iovec(WRITE
, _payload_iov
, ioc
,
37 ARRAY_SIZE(iovstack
), &iov
,
42 ret
= keyctl_instantiate_key_common(id
, &from
, ringid
);
48 * The key control system call, 32-bit compatibility version for 64-bit archs
50 * This should only be called if the 64-bit arch uses weird pointers in 32-bit
51 * mode or doesn't guarantee that the top 32-bits of the argument registers on
52 * taking a 32-bit syscall are zero. If you can, you should call sys_keyctl()
55 COMPAT_SYSCALL_DEFINE5(keyctl
, u32
, option
,
56 u32
, arg2
, u32
, arg3
, u32
, arg4
, u32
, arg5
)
59 case KEYCTL_GET_KEYRING_ID
:
60 return keyctl_get_keyring_ID(arg2
, arg3
);
62 case KEYCTL_JOIN_SESSION_KEYRING
:
63 return keyctl_join_session_keyring(compat_ptr(arg2
));
66 return keyctl_update_key(arg2
, compat_ptr(arg3
), arg4
);
69 return keyctl_revoke_key(arg2
);
72 return keyctl_describe_key(arg2
, compat_ptr(arg3
), arg4
);
75 return keyctl_keyring_clear(arg2
);
78 return keyctl_keyring_link(arg2
, arg3
);
81 return keyctl_keyring_unlink(arg2
, arg3
);
84 return keyctl_keyring_search(arg2
, compat_ptr(arg3
),
85 compat_ptr(arg4
), arg5
);
88 return keyctl_read_key(arg2
, compat_ptr(arg3
), arg4
);
91 return keyctl_chown_key(arg2
, arg3
, arg4
);
94 return keyctl_setperm_key(arg2
, arg3
);
96 case KEYCTL_INSTANTIATE
:
97 return keyctl_instantiate_key(arg2
, compat_ptr(arg3
), arg4
,
101 return keyctl_negate_key(arg2
, arg3
, arg4
);
103 case KEYCTL_SET_REQKEY_KEYRING
:
104 return keyctl_set_reqkey_keyring(arg2
);
106 case KEYCTL_SET_TIMEOUT
:
107 return keyctl_set_timeout(arg2
, arg3
);
109 case KEYCTL_ASSUME_AUTHORITY
:
110 return keyctl_assume_authority(arg2
);
112 case KEYCTL_GET_SECURITY
:
113 return keyctl_get_security(arg2
, compat_ptr(arg3
), arg4
);
115 case KEYCTL_SESSION_TO_PARENT
:
116 return keyctl_session_to_parent();
119 return keyctl_reject_key(arg2
, arg3
, arg4
, arg5
);
121 case KEYCTL_INSTANTIATE_IOV
:
122 return compat_keyctl_instantiate_key_iov(
123 arg2
, compat_ptr(arg3
), arg4
, arg5
);
125 case KEYCTL_INVALIDATE
:
126 return keyctl_invalidate_key(arg2
);
128 case KEYCTL_GET_PERSISTENT
:
129 return keyctl_get_persistent(arg2
, arg3
);
131 case KEYCTL_DH_COMPUTE
:
132 return compat_keyctl_dh_compute(compat_ptr(arg2
),
134 arg4
, compat_ptr(arg5
));
136 case KEYCTL_RESTRICT_KEYRING
:
137 return keyctl_restrict_keyring(arg2
, compat_ptr(arg3
),
140 case KEYCTL_PKEY_QUERY
:
143 return keyctl_pkey_query(arg2
,
147 case KEYCTL_PKEY_ENCRYPT
:
148 case KEYCTL_PKEY_DECRYPT
:
149 case KEYCTL_PKEY_SIGN
:
150 return keyctl_pkey_e_d_s(option
,
151 compat_ptr(arg2
), compat_ptr(arg3
),
152 compat_ptr(arg4
), compat_ptr(arg5
));
154 case KEYCTL_PKEY_VERIFY
:
155 return keyctl_pkey_verify(compat_ptr(arg2
), compat_ptr(arg3
),
156 compat_ptr(arg4
), compat_ptr(arg5
));
159 return keyctl_keyring_move(arg2
, arg3
, arg4
, arg5
);
161 case KEYCTL_CAPABILITIES
:
162 return keyctl_capabilities(compat_ptr(arg2
), arg3
);