cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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compat.c (3300B)


      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}