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973c9f4f | 1 | /* 32-bit compatibility syscall for 64-bit systems |
1da177e4 | 2 | * |
3e30148c | 3 | * Copyright (C) 2004-5 Red Hat, Inc. All Rights Reserved. |
1da177e4 LT |
4 | * Written by David Howells (dhowells@redhat.com) |
5 | * | |
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. | |
10 | */ | |
11 | ||
1da177e4 LT |
12 | #include <linux/syscalls.h> |
13 | #include <linux/keyctl.h> | |
14 | #include <linux/compat.h> | |
ee009e4a | 15 | #include <linux/slab.h> |
1da177e4 LT |
16 | #include "internal.h" |
17 | ||
ee009e4a DH |
18 | /* |
19 | * Instantiate a key with the specified compatibility multipart payload and | |
20 | * link the key into the destination keyring if one is given. | |
21 | * | |
22 | * The caller must have the appropriate instantiation permit set for this to | |
23 | * work (see keyctl_assume_authority). No other permissions are required. | |
24 | * | |
25 | * If successful, 0 will be returned. | |
26 | */ | |
423b9788 | 27 | static long compat_keyctl_instantiate_key_iov( |
ee009e4a DH |
28 | key_serial_t id, |
29 | const struct compat_iovec __user *_payload_iov, | |
30 | unsigned ioc, | |
31 | key_serial_t ringid) | |
32 | { | |
33 | struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; | |
b353a1f7 | 34 | struct iov_iter from; |
ee009e4a DH |
35 | long ret; |
36 | ||
b353a1f7 AV |
37 | if (!_payload_iov) |
38 | ioc = 0; | |
ee009e4a | 39 | |
b353a1f7 AV |
40 | ret = compat_import_iovec(WRITE, _payload_iov, ioc, |
41 | ARRAY_SIZE(iovstack), &iov, | |
42 | &from); | |
ee009e4a | 43 | if (ret < 0) |
b353a1f7 | 44 | return ret; |
ee009e4a | 45 | |
b353a1f7 AV |
46 | ret = keyctl_instantiate_key_common(id, &from, ringid); |
47 | kfree(iov); | |
ee009e4a | 48 | return ret; |
ee009e4a DH |
49 | } |
50 | ||
1da177e4 | 51 | /* |
973c9f4f DH |
52 | * The key control system call, 32-bit compatibility version for 64-bit archs |
53 | * | |
54 | * This should only be called if the 64-bit arch uses weird pointers in 32-bit | |
55 | * mode or doesn't guarantee that the top 32-bits of the argument registers on | |
56 | * taking a 32-bit syscall are zero. If you can, you should call sys_keyctl() | |
57 | * directly. | |
1da177e4 | 58 | */ |
875ec3da HC |
59 | COMPAT_SYSCALL_DEFINE5(keyctl, u32, option, |
60 | u32, arg2, u32, arg3, u32, arg4, u32, arg5) | |
1da177e4 LT |
61 | { |
62 | switch (option) { | |
63 | case KEYCTL_GET_KEYRING_ID: | |
64 | return keyctl_get_keyring_ID(arg2, arg3); | |
65 | ||
66 | case KEYCTL_JOIN_SESSION_KEYRING: | |
67 | return keyctl_join_session_keyring(compat_ptr(arg2)); | |
68 | ||
69 | case KEYCTL_UPDATE: | |
70 | return keyctl_update_key(arg2, compat_ptr(arg3), arg4); | |
71 | ||
72 | case KEYCTL_REVOKE: | |
73 | return keyctl_revoke_key(arg2); | |
74 | ||
75 | case KEYCTL_DESCRIBE: | |
76 | return keyctl_describe_key(arg2, compat_ptr(arg3), arg4); | |
77 | ||
78 | case KEYCTL_CLEAR: | |
79 | return keyctl_keyring_clear(arg2); | |
80 | ||
81 | case KEYCTL_LINK: | |
82 | return keyctl_keyring_link(arg2, arg3); | |
83 | ||
84 | case KEYCTL_UNLINK: | |
85 | return keyctl_keyring_unlink(arg2, arg3); | |
86 | ||
87 | case KEYCTL_SEARCH: | |
88 | return keyctl_keyring_search(arg2, compat_ptr(arg3), | |
89 | compat_ptr(arg4), arg5); | |
90 | ||
91 | case KEYCTL_READ: | |
92 | return keyctl_read_key(arg2, compat_ptr(arg3), arg4); | |
93 | ||
94 | case KEYCTL_CHOWN: | |
95 | return keyctl_chown_key(arg2, arg3, arg4); | |
96 | ||
97 | case KEYCTL_SETPERM: | |
98 | return keyctl_setperm_key(arg2, arg3); | |
99 | ||
100 | case KEYCTL_INSTANTIATE: | |
101 | return keyctl_instantiate_key(arg2, compat_ptr(arg3), arg4, | |
102 | arg5); | |
103 | ||
104 | case KEYCTL_NEGATE: | |
105 | return keyctl_negate_key(arg2, arg3, arg4); | |
106 | ||
3e30148c DH |
107 | case KEYCTL_SET_REQKEY_KEYRING: |
108 | return keyctl_set_reqkey_keyring(arg2); | |
109 | ||
017679c4 DH |
110 | case KEYCTL_SET_TIMEOUT: |
111 | return keyctl_set_timeout(arg2, arg3); | |
112 | ||
b5f545c8 DH |
113 | case KEYCTL_ASSUME_AUTHORITY: |
114 | return keyctl_assume_authority(arg2); | |
115 | ||
70a5bb72 DH |
116 | case KEYCTL_GET_SECURITY: |
117 | return keyctl_get_security(arg2, compat_ptr(arg3), arg4); | |
118 | ||
ee18d64c DH |
119 | case KEYCTL_SESSION_TO_PARENT: |
120 | return keyctl_session_to_parent(); | |
121 | ||
fdd1b945 DH |
122 | case KEYCTL_REJECT: |
123 | return keyctl_reject_key(arg2, arg3, arg4, arg5); | |
124 | ||
ee009e4a DH |
125 | case KEYCTL_INSTANTIATE_IOV: |
126 | return compat_keyctl_instantiate_key_iov( | |
127 | arg2, compat_ptr(arg3), arg4, arg5); | |
128 | ||
fd75815f DH |
129 | case KEYCTL_INVALIDATE: |
130 | return keyctl_invalidate_key(arg2); | |
131 | ||
f36f8c75 DH |
132 | case KEYCTL_GET_PERSISTENT: |
133 | return keyctl_get_persistent(arg2, arg3); | |
134 | ||
1da177e4 LT |
135 | default: |
136 | return -EOPNOTSUPP; | |
137 | } | |
a8b17ed0 | 138 | } |