2 * Netlink message type permission tables, for user generated messages.
4 * Author: James Morris <jmorris@redhat.com>
6 * Copyright (C) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2,
10 * as published by the Free Software Foundation.
12 #include <linux/types.h>
13 #include <linux/kernel.h>
14 #include <linux/netlink.h>
15 #include <linux/rtnetlink.h>
17 #include <linux/inet_diag.h>
18 #include <linux/xfrm.h>
19 #include <linux/audit.h>
20 #include <linux/sock_diag.h>
23 #include "av_permissions.h"
31 static const struct nlmsg_perm nlmsg_route_perms
[] =
33 { RTM_NEWLINK
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
34 { RTM_DELLINK
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
35 { RTM_GETLINK
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
36 { RTM_SETLINK
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
37 { RTM_NEWADDR
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
38 { RTM_DELADDR
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
39 { RTM_GETADDR
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
40 { RTM_NEWROUTE
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
41 { RTM_DELROUTE
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
42 { RTM_GETROUTE
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
43 { RTM_NEWNEIGH
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
44 { RTM_DELNEIGH
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
45 { RTM_GETNEIGH
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
46 { RTM_NEWRULE
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
47 { RTM_DELRULE
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
48 { RTM_GETRULE
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
49 { RTM_NEWQDISC
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
50 { RTM_DELQDISC
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
51 { RTM_GETQDISC
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
52 { RTM_NEWTCLASS
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
53 { RTM_DELTCLASS
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
54 { RTM_GETTCLASS
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
55 { RTM_NEWTFILTER
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
56 { RTM_DELTFILTER
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
57 { RTM_GETTFILTER
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
58 { RTM_NEWACTION
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
59 { RTM_DELACTION
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
60 { RTM_GETACTION
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
61 { RTM_NEWPREFIX
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
62 { RTM_GETMULTICAST
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
63 { RTM_GETANYCAST
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
64 { RTM_GETNEIGHTBL
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
65 { RTM_SETNEIGHTBL
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
66 { RTM_NEWADDRLABEL
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
67 { RTM_DELADDRLABEL
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
68 { RTM_GETADDRLABEL
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
69 { RTM_GETDCB
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
70 { RTM_SETDCB
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
71 { RTM_NEWNETCONF
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
72 { RTM_DELNETCONF
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
73 { RTM_GETNETCONF
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
74 { RTM_NEWMDB
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
75 { RTM_DELMDB
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
76 { RTM_GETMDB
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
77 { RTM_NEWNSID
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
78 { RTM_DELNSID
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
79 { RTM_GETNSID
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
80 { RTM_NEWSTATS
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
81 { RTM_GETSTATS
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
82 { RTM_NEWCACHEREPORT
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
85 static const struct nlmsg_perm nlmsg_tcpdiag_perms
[] =
87 { TCPDIAG_GETSOCK
, NETLINK_TCPDIAG_SOCKET__NLMSG_READ
},
88 { DCCPDIAG_GETSOCK
, NETLINK_TCPDIAG_SOCKET__NLMSG_READ
},
89 { SOCK_DIAG_BY_FAMILY
, NETLINK_TCPDIAG_SOCKET__NLMSG_READ
},
90 { SOCK_DESTROY
, NETLINK_TCPDIAG_SOCKET__NLMSG_WRITE
},
93 static const struct nlmsg_perm nlmsg_xfrm_perms
[] =
95 { XFRM_MSG_NEWSA
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
96 { XFRM_MSG_DELSA
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
97 { XFRM_MSG_GETSA
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
98 { XFRM_MSG_NEWPOLICY
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
99 { XFRM_MSG_DELPOLICY
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
100 { XFRM_MSG_GETPOLICY
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
101 { XFRM_MSG_ALLOCSPI
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
102 { XFRM_MSG_ACQUIRE
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
103 { XFRM_MSG_EXPIRE
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
104 { XFRM_MSG_UPDPOLICY
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
105 { XFRM_MSG_UPDSA
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
106 { XFRM_MSG_POLEXPIRE
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
107 { XFRM_MSG_FLUSHSA
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
108 { XFRM_MSG_FLUSHPOLICY
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
109 { XFRM_MSG_NEWAE
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
110 { XFRM_MSG_GETAE
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
111 { XFRM_MSG_REPORT
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
112 { XFRM_MSG_MIGRATE
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
113 { XFRM_MSG_NEWSADINFO
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
114 { XFRM_MSG_GETSADINFO
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
115 { XFRM_MSG_NEWSPDINFO
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
116 { XFRM_MSG_GETSPDINFO
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
117 { XFRM_MSG_MAPPING
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
120 static const struct nlmsg_perm nlmsg_audit_perms
[] =
122 { AUDIT_GET
, NETLINK_AUDIT_SOCKET__NLMSG_READ
},
123 { AUDIT_SET
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
124 { AUDIT_LIST
, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV
},
125 { AUDIT_ADD
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
126 { AUDIT_DEL
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
127 { AUDIT_LIST_RULES
, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV
},
128 { AUDIT_ADD_RULE
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
129 { AUDIT_DEL_RULE
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
130 { AUDIT_USER
, NETLINK_AUDIT_SOCKET__NLMSG_RELAY
},
131 { AUDIT_SIGNAL_INFO
, NETLINK_AUDIT_SOCKET__NLMSG_READ
},
132 { AUDIT_TRIM
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
133 { AUDIT_MAKE_EQUIV
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
134 { AUDIT_TTY_GET
, NETLINK_AUDIT_SOCKET__NLMSG_READ
},
135 { AUDIT_TTY_SET
, NETLINK_AUDIT_SOCKET__NLMSG_TTY_AUDIT
},
136 { AUDIT_GET_FEATURE
, NETLINK_AUDIT_SOCKET__NLMSG_READ
},
137 { AUDIT_SET_FEATURE
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
141 static int nlmsg_perm(u16 nlmsg_type
, u32
*perm
, const struct nlmsg_perm
*tab
, size_t tabsize
)
143 int i
, err
= -EINVAL
;
145 for (i
= 0; i
< tabsize
/sizeof(struct nlmsg_perm
); i
++)
146 if (nlmsg_type
== tab
[i
].nlmsg_type
) {
155 int selinux_nlmsg_lookup(u16 sclass
, u16 nlmsg_type
, u32
*perm
)
160 case SECCLASS_NETLINK_ROUTE_SOCKET
:
161 /* RTM_MAX always point to RTM_SETxxxx, ie RTM_NEWxxx + 3 */
162 BUILD_BUG_ON(RTM_MAX
!= (RTM_NEWCACHEREPORT
+ 3));
163 err
= nlmsg_perm(nlmsg_type
, perm
, nlmsg_route_perms
,
164 sizeof(nlmsg_route_perms
));
167 case SECCLASS_NETLINK_TCPDIAG_SOCKET
:
168 err
= nlmsg_perm(nlmsg_type
, perm
, nlmsg_tcpdiag_perms
,
169 sizeof(nlmsg_tcpdiag_perms
));
172 case SECCLASS_NETLINK_XFRM_SOCKET
:
173 BUILD_BUG_ON(XFRM_MSG_MAX
!= XFRM_MSG_MAPPING
);
174 err
= nlmsg_perm(nlmsg_type
, perm
, nlmsg_xfrm_perms
,
175 sizeof(nlmsg_xfrm_perms
));
178 case SECCLASS_NETLINK_AUDIT_SOCKET
:
179 if ((nlmsg_type
>= AUDIT_FIRST_USER_MSG
&&
180 nlmsg_type
<= AUDIT_LAST_USER_MSG
) ||
181 (nlmsg_type
>= AUDIT_FIRST_USER_MSG2
&&
182 nlmsg_type
<= AUDIT_LAST_USER_MSG2
)) {
183 *perm
= NETLINK_AUDIT_SOCKET__NLMSG_RELAY
;
185 err
= nlmsg_perm(nlmsg_type
, perm
, nlmsg_audit_perms
,
186 sizeof(nlmsg_audit_perms
));
190 /* No messaging from userspace, or class unknown/unhandled */