security/keys/compat.c

   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  */
  17 COMPAT_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 }