1 /* compat.c: 32-bit compatibility syscall for 64-bit systems 2 * 3 * Copyright (C) 2004-5 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/syscalls.h> 13 #include <linux/keyctl.h> 14 #include <linux/compat.h> 15 #include "internal.h" 16 17 /*****************************************************************************/ 18 /* 19 * the key control system call, 32-bit compatibility version for 64-bit archs 20 * - this should only be called if the 64-bit arch uses weird pointers in 21 * 32-bit mode or doesn't guarantee that the top 32-bits of the argument 22 * registers on taking a 32-bit syscall are zero 23 * - if you can, you should call sys_keyctl directly 24 */ 25 asmlinkage long compat_sys_keyctl(u32 option, 26 u32 arg2, u32 arg3, u32 arg4, u32 arg5) 27 { 28 switch (option) { 29 case KEYCTL_GET_KEYRING_ID: 30 return keyctl_get_keyring_ID(arg2, arg3); 31 32 case KEYCTL_JOIN_SESSION_KEYRING: 33 return keyctl_join_session_keyring(compat_ptr(arg2)); 34 35 case KEYCTL_UPDATE: 36 return keyctl_update_key(arg2, compat_ptr(arg3), arg4); 37 38 case KEYCTL_REVOKE: 39 return keyctl_revoke_key(arg2); 40 41 case KEYCTL_DESCRIBE: 42 return keyctl_describe_key(arg2, compat_ptr(arg3), arg4); 43 44 case KEYCTL_CLEAR: 45 return keyctl_keyring_clear(arg2); 46 47 case KEYCTL_LINK: 48 return keyctl_keyring_link(arg2, arg3); 49 50 case KEYCTL_UNLINK: 51 return keyctl_keyring_unlink(arg2, arg3); 52 53 case KEYCTL_SEARCH: 54 return keyctl_keyring_search(arg2, compat_ptr(arg3), 55 compat_ptr(arg4), arg5); 56 57 case KEYCTL_READ: 58 return keyctl_read_key(arg2, compat_ptr(arg3), arg4); 59 60 case KEYCTL_CHOWN: 61 return keyctl_chown_key(arg2, arg3, arg4); 62 63 case KEYCTL_SETPERM: 64 return keyctl_setperm_key(arg2, arg3); 65 66 case KEYCTL_INSTANTIATE: 67 return keyctl_instantiate_key(arg2, compat_ptr(arg3), arg4, 68 arg5); 69 70 case KEYCTL_NEGATE: 71 return keyctl_negate_key(arg2, arg3, arg4); 72 73 case KEYCTL_SET_REQKEY_KEYRING: 74 return keyctl_set_reqkey_keyring(arg2); 75 76 case KEYCTL_SET_TIMEOUT: 77 return keyctl_set_timeout(arg2, arg3); 78 79 case KEYCTL_ASSUME_AUTHORITY: 80 return keyctl_assume_authority(arg2); 81 82 case KEYCTL_GET_SECURITY: 83 return keyctl_get_security(arg2, compat_ptr(arg3), arg4); 84 85 case KEYCTL_SESSION_TO_PARENT: 86 return keyctl_session_to_parent(); 87 88 default: 89 return -EOPNOTSUPP; 90 } 91 92 } /* end compat_sys_keyctl() */ 93