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/skbuff.h>
15 #include <linux/netlink.h>
16 #include <linux/rtnetlink.h>
18 #include <linux/netfilter_ipv4/ip_queue.h>
19 #include <linux/inet_diag.h>
20 #include <linux/xfrm.h>
21 #include <linux/audit.h>
24 #include "av_permissions.h"
32 static struct nlmsg_perm nlmsg_route_perms
[] =
34 { RTM_NEWLINK
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
35 { RTM_DELLINK
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
36 { RTM_GETLINK
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
37 { RTM_SETLINK
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
38 { RTM_NEWADDR
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
39 { RTM_DELADDR
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
40 { RTM_GETADDR
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
41 { RTM_NEWROUTE
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
42 { RTM_DELROUTE
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
43 { RTM_GETROUTE
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
44 { RTM_NEWNEIGH
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
45 { RTM_DELNEIGH
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
46 { RTM_GETNEIGH
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
47 { RTM_NEWRULE
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
48 { RTM_DELRULE
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
49 { RTM_GETRULE
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
50 { RTM_NEWQDISC
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
51 { RTM_DELQDISC
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
52 { RTM_GETQDISC
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
53 { RTM_NEWTCLASS
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
54 { RTM_DELTCLASS
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
55 { RTM_GETTCLASS
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
56 { RTM_NEWTFILTER
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
57 { RTM_DELTFILTER
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
58 { RTM_GETTFILTER
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
59 { RTM_NEWACTION
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
60 { RTM_DELACTION
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
61 { RTM_GETACTION
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
62 { RTM_NEWPREFIX
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
63 { RTM_GETMULTICAST
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
64 { RTM_GETANYCAST
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
65 { RTM_GETNEIGHTBL
, NETLINK_ROUTE_SOCKET__NLMSG_READ
},
66 { RTM_SETNEIGHTBL
, NETLINK_ROUTE_SOCKET__NLMSG_WRITE
},
69 static struct nlmsg_perm nlmsg_firewall_perms
[] =
71 { IPQM_MODE
, NETLINK_FIREWALL_SOCKET__NLMSG_WRITE
},
72 { IPQM_VERDICT
, NETLINK_FIREWALL_SOCKET__NLMSG_WRITE
},
75 static struct nlmsg_perm nlmsg_tcpdiag_perms
[] =
77 { TCPDIAG_GETSOCK
, NETLINK_TCPDIAG_SOCKET__NLMSG_READ
},
78 { DCCPDIAG_GETSOCK
, NETLINK_TCPDIAG_SOCKET__NLMSG_READ
},
81 static struct nlmsg_perm nlmsg_xfrm_perms
[] =
83 { XFRM_MSG_NEWSA
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
84 { XFRM_MSG_DELSA
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
85 { XFRM_MSG_GETSA
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
86 { XFRM_MSG_NEWPOLICY
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
87 { XFRM_MSG_DELPOLICY
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
88 { XFRM_MSG_GETPOLICY
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
89 { XFRM_MSG_ALLOCSPI
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
90 { XFRM_MSG_ACQUIRE
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
91 { XFRM_MSG_EXPIRE
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
92 { XFRM_MSG_UPDPOLICY
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
93 { XFRM_MSG_UPDSA
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
94 { XFRM_MSG_POLEXPIRE
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
95 { XFRM_MSG_FLUSHSA
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
96 { XFRM_MSG_FLUSHPOLICY
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
97 { XFRM_MSG_NEWAE
, NETLINK_XFRM_SOCKET__NLMSG_WRITE
},
98 { XFRM_MSG_GETAE
, NETLINK_XFRM_SOCKET__NLMSG_READ
},
101 static struct nlmsg_perm nlmsg_audit_perms
[] =
103 { AUDIT_GET
, NETLINK_AUDIT_SOCKET__NLMSG_READ
},
104 { AUDIT_SET
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
105 { AUDIT_LIST
, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV
},
106 { AUDIT_ADD
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
107 { AUDIT_DEL
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
108 { AUDIT_LIST_RULES
, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV
},
109 { AUDIT_ADD_RULE
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
110 { AUDIT_DEL_RULE
, NETLINK_AUDIT_SOCKET__NLMSG_WRITE
},
111 { AUDIT_USER
, NETLINK_AUDIT_SOCKET__NLMSG_RELAY
},
112 { AUDIT_SIGNAL_INFO
, NETLINK_AUDIT_SOCKET__NLMSG_READ
},
116 static int nlmsg_perm(u16 nlmsg_type
, u32
*perm
, struct nlmsg_perm
*tab
, size_t tabsize
)
118 int i
, err
= -EINVAL
;
120 for (i
= 0; i
< tabsize
/sizeof(struct nlmsg_perm
); i
++)
121 if (nlmsg_type
== tab
[i
].nlmsg_type
) {
130 int selinux_nlmsg_lookup(u16 sclass
, u16 nlmsg_type
, u32
*perm
)
135 case SECCLASS_NETLINK_ROUTE_SOCKET
:
136 err
= nlmsg_perm(nlmsg_type
, perm
, nlmsg_route_perms
,
137 sizeof(nlmsg_route_perms
));
140 case SECCLASS_NETLINK_FIREWALL_SOCKET
:
141 case SECCLASS_NETLINK_IP6FW_SOCKET
:
142 err
= nlmsg_perm(nlmsg_type
, perm
, nlmsg_firewall_perms
,
143 sizeof(nlmsg_firewall_perms
));
146 case SECCLASS_NETLINK_TCPDIAG_SOCKET
:
147 err
= nlmsg_perm(nlmsg_type
, perm
, nlmsg_tcpdiag_perms
,
148 sizeof(nlmsg_tcpdiag_perms
));
151 case SECCLASS_NETLINK_XFRM_SOCKET
:
152 err
= nlmsg_perm(nlmsg_type
, perm
, nlmsg_xfrm_perms
,
153 sizeof(nlmsg_xfrm_perms
));
156 case SECCLASS_NETLINK_AUDIT_SOCKET
:
157 if ((nlmsg_type
>= AUDIT_FIRST_USER_MSG
&&
158 nlmsg_type
<= AUDIT_LAST_USER_MSG
) ||
159 (nlmsg_type
>= AUDIT_FIRST_USER_MSG2
&&
160 nlmsg_type
<= AUDIT_LAST_USER_MSG2
)) {
161 *perm
= NETLINK_AUDIT_SOCKET__NLMSG_RELAY
;
163 err
= nlmsg_perm(nlmsg_type
, perm
, nlmsg_audit_perms
,
164 sizeof(nlmsg_audit_perms
));
168 /* No messaging from userspace, or class unknown/unhandled */