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1da177e4 LT |
1 | /* compat.c: 32-bit compatibility syscall for 64-bit systems |
2 | * | |
3 | * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. | |
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 | ||
12 | #include <linux/sched.h> | |
13 | #include <linux/syscalls.h> | |
14 | #include <linux/keyctl.h> | |
15 | #include <linux/compat.h> | |
16 | #include "internal.h" | |
17 | ||
18 | /*****************************************************************************/ | |
19 | /* | |
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 | |
25 | */ | |
26 | asmlinkage long compat_sys_keyctl(u32 option, | |
27 | u32 arg2, u32 arg3, u32 arg4, u32 arg5) | |
28 | { | |
29 | switch (option) { | |
30 | case KEYCTL_GET_KEYRING_ID: | |
31 | return keyctl_get_keyring_ID(arg2, arg3); | |
32 | ||
33 | case KEYCTL_JOIN_SESSION_KEYRING: | |
34 | return keyctl_join_session_keyring(compat_ptr(arg2)); | |
35 | ||
36 | case KEYCTL_UPDATE: | |
37 | return keyctl_update_key(arg2, compat_ptr(arg3), arg4); | |
38 | ||
39 | case KEYCTL_REVOKE: | |
40 | return keyctl_revoke_key(arg2); | |
41 | ||
42 | case KEYCTL_DESCRIBE: | |
43 | return keyctl_describe_key(arg2, compat_ptr(arg3), arg4); | |
44 | ||
45 | case KEYCTL_CLEAR: | |
46 | return keyctl_keyring_clear(arg2); | |
47 | ||
48 | case KEYCTL_LINK: | |
49 | return keyctl_keyring_link(arg2, arg3); | |
50 | ||
51 | case KEYCTL_UNLINK: | |
52 | return keyctl_keyring_unlink(arg2, arg3); | |
53 | ||
54 | case KEYCTL_SEARCH: | |
55 | return keyctl_keyring_search(arg2, compat_ptr(arg3), | |
56 | compat_ptr(arg4), arg5); | |
57 | ||
58 | case KEYCTL_READ: | |
59 | return keyctl_read_key(arg2, compat_ptr(arg3), arg4); | |
60 | ||
61 | case KEYCTL_CHOWN: | |
62 | return keyctl_chown_key(arg2, arg3, arg4); | |
63 | ||
64 | case KEYCTL_SETPERM: | |
65 | return keyctl_setperm_key(arg2, arg3); | |
66 | ||
67 | case KEYCTL_INSTANTIATE: | |
68 | return keyctl_instantiate_key(arg2, compat_ptr(arg3), arg4, | |
69 | arg5); | |
70 | ||
71 | case KEYCTL_NEGATE: | |
72 | return keyctl_negate_key(arg2, arg3, arg4); | |
73 | ||
74 | default: | |
75 | return -EOPNOTSUPP; | |
76 | } | |
77 | ||
78 | } /* end compat_sys_keyctl() */ |