econet: Fix econet_getname() leak
[linux-2.6/mini2440.git] / security / selinux / nlmsgtab.c
blobc6875fd3b9d61445009f22d3ea8b91037b864d25
1 /*
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>
17 #include <linux/if.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>
23 #include "flask.h"
24 #include "av_permissions.h"
26 struct nlmsg_perm {
27 u16 nlmsg_type;
28 u32 perm;
31 static 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 },
71 static struct nlmsg_perm nlmsg_firewall_perms[] =
73 { IPQM_MODE, NETLINK_FIREWALL_SOCKET__NLMSG_WRITE },
74 { IPQM_VERDICT, NETLINK_FIREWALL_SOCKET__NLMSG_WRITE },
77 static struct nlmsg_perm nlmsg_tcpdiag_perms[] =
79 { TCPDIAG_GETSOCK, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
80 { DCCPDIAG_GETSOCK, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
83 static struct nlmsg_perm nlmsg_xfrm_perms[] =
85 { XFRM_MSG_NEWSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
86 { XFRM_MSG_DELSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
87 { XFRM_MSG_GETSA, NETLINK_XFRM_SOCKET__NLMSG_READ },
88 { XFRM_MSG_NEWPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
89 { XFRM_MSG_DELPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
90 { XFRM_MSG_GETPOLICY, NETLINK_XFRM_SOCKET__NLMSG_READ },
91 { XFRM_MSG_ALLOCSPI, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
92 { XFRM_MSG_ACQUIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
93 { XFRM_MSG_EXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
94 { XFRM_MSG_UPDPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
95 { XFRM_MSG_UPDSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
96 { XFRM_MSG_POLEXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
97 { XFRM_MSG_FLUSHSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
98 { XFRM_MSG_FLUSHPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
99 { XFRM_MSG_NEWAE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
100 { XFRM_MSG_GETAE, NETLINK_XFRM_SOCKET__NLMSG_READ },
103 static struct nlmsg_perm nlmsg_audit_perms[] =
105 { AUDIT_GET, NETLINK_AUDIT_SOCKET__NLMSG_READ },
106 { AUDIT_SET, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
107 { AUDIT_LIST, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV },
108 { AUDIT_ADD, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
109 { AUDIT_DEL, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
110 { AUDIT_LIST_RULES, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV },
111 { AUDIT_ADD_RULE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
112 { AUDIT_DEL_RULE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
113 { AUDIT_USER, NETLINK_AUDIT_SOCKET__NLMSG_RELAY },
114 { AUDIT_SIGNAL_INFO, NETLINK_AUDIT_SOCKET__NLMSG_READ },
115 { AUDIT_TTY_GET, NETLINK_AUDIT_SOCKET__NLMSG_READ },
116 { AUDIT_TTY_SET, NETLINK_AUDIT_SOCKET__NLMSG_TTY_AUDIT },
120 static int nlmsg_perm(u16 nlmsg_type, u32 *perm, struct nlmsg_perm *tab, size_t tabsize)
122 int i, err = -EINVAL;
124 for (i = 0; i < tabsize/sizeof(struct nlmsg_perm); i++)
125 if (nlmsg_type == tab[i].nlmsg_type) {
126 *perm = tab[i].perm;
127 err = 0;
128 break;
131 return err;
134 int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm)
136 int err = 0;
138 switch (sclass) {
139 case SECCLASS_NETLINK_ROUTE_SOCKET:
140 err = nlmsg_perm(nlmsg_type, perm, nlmsg_route_perms,
141 sizeof(nlmsg_route_perms));
142 break;
144 case SECCLASS_NETLINK_FIREWALL_SOCKET:
145 case SECCLASS_NETLINK_IP6FW_SOCKET:
146 err = nlmsg_perm(nlmsg_type, perm, nlmsg_firewall_perms,
147 sizeof(nlmsg_firewall_perms));
148 break;
150 case SECCLASS_NETLINK_TCPDIAG_SOCKET:
151 err = nlmsg_perm(nlmsg_type, perm, nlmsg_tcpdiag_perms,
152 sizeof(nlmsg_tcpdiag_perms));
153 break;
155 case SECCLASS_NETLINK_XFRM_SOCKET:
156 err = nlmsg_perm(nlmsg_type, perm, nlmsg_xfrm_perms,
157 sizeof(nlmsg_xfrm_perms));
158 break;
160 case SECCLASS_NETLINK_AUDIT_SOCKET:
161 if ((nlmsg_type >= AUDIT_FIRST_USER_MSG &&
162 nlmsg_type <= AUDIT_LAST_USER_MSG) ||
163 (nlmsg_type >= AUDIT_FIRST_USER_MSG2 &&
164 nlmsg_type <= AUDIT_LAST_USER_MSG2)) {
165 *perm = NETLINK_AUDIT_SOCKET__NLMSG_RELAY;
166 } else {
167 err = nlmsg_perm(nlmsg_type, perm, nlmsg_audit_perms,
168 sizeof(nlmsg_audit_perms));
170 break;
172 /* No messaging from userspace, or class unknown/unhandled */
173 default:
174 err = -ENOENT;
175 break;
178 return err;