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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /security/selinux/nlmsgtab.c
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Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'security/selinux/nlmsgtab.c')
-rw-r--r--security/selinux/nlmsgtab.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/security/selinux/nlmsgtab.c b/security/selinux/nlmsgtab.c
new file mode 100644
index 00000000000..fa7fa030e6e
--- /dev/null
+++ b/security/selinux/nlmsgtab.c
@@ -0,0 +1,156 @@
+/*
+ * Netlink message type permission tables, for user generated messages.
+ *
+ * Author: James Morris <jmorris@redhat.com>
+ *
+ * Copyright (C) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/if.h>
+#include <linux/netfilter_ipv4/ip_queue.h>
+#include <linux/tcp_diag.h>
+#include <linux/xfrm.h>
+#include <linux/audit.h>
+
+#include "flask.h"
+#include "av_permissions.h"
+
+struct nlmsg_perm
+{
+ u16 nlmsg_type;
+ u32 perm;
+};
+
+static struct nlmsg_perm nlmsg_route_perms[] =
+{
+ { RTM_NEWLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_DELLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_GETLINK, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_SETLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_NEWADDR, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_DELADDR, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_GETADDR, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_NEWROUTE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_DELROUTE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_GETROUTE, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_NEWNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_DELNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_GETNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_NEWRULE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_DELRULE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_GETRULE, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_NEWQDISC, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_DELQDISC, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_GETQDISC, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_NEWTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_DELTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_GETTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_NEWTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_DELTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_GETTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_NEWACTION, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_DELACTION, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_GETACTION, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_NEWPREFIX, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+ { RTM_GETPREFIX, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_GETMULTICAST, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+ { RTM_GETANYCAST, NETLINK_ROUTE_SOCKET__NLMSG_READ },
+};
+
+static struct nlmsg_perm nlmsg_firewall_perms[] =
+{
+ { IPQM_MODE, NETLINK_FIREWALL_SOCKET__NLMSG_WRITE },
+ { IPQM_VERDICT, NETLINK_FIREWALL_SOCKET__NLMSG_WRITE },
+};
+
+static struct nlmsg_perm nlmsg_tcpdiag_perms[] =
+{
+ { TCPDIAG_GETSOCK, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
+};
+
+static struct nlmsg_perm nlmsg_xfrm_perms[] =
+{
+ { XFRM_MSG_NEWSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_DELSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_GETSA, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_NEWPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_DELPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_GETPOLICY, NETLINK_XFRM_SOCKET__NLMSG_READ },
+ { XFRM_MSG_ALLOCSPI, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_UPDPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+ { XFRM_MSG_UPDSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+};
+
+static struct nlmsg_perm nlmsg_audit_perms[] =
+{
+ { AUDIT_GET, NETLINK_AUDIT_SOCKET__NLMSG_READ },
+ { AUDIT_SET, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
+ { AUDIT_LIST, NETLINK_AUDIT_SOCKET__NLMSG_READ },
+ { AUDIT_ADD, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
+ { AUDIT_DEL, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
+ { AUDIT_USER, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
+ { AUDIT_LOGIN, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
+};
+
+
+static int nlmsg_perm(u16 nlmsg_type, u32 *perm, struct nlmsg_perm *tab, size_t tabsize)
+{
+ int i, err = -EINVAL;
+
+ for (i = 0; i < tabsize/sizeof(struct nlmsg_perm); i++)
+ if (nlmsg_type == tab[i].nlmsg_type) {
+ *perm = tab[i].perm;
+ err = 0;
+ break;
+ }
+
+ return err;
+}
+
+int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm)
+{
+ int err = 0;
+
+ switch (sclass) {
+ case SECCLASS_NETLINK_ROUTE_SOCKET:
+ err = nlmsg_perm(nlmsg_type, perm, nlmsg_route_perms,
+ sizeof(nlmsg_route_perms));
+ break;
+
+ case SECCLASS_NETLINK_FIREWALL_SOCKET:
+ case NETLINK_IP6_FW:
+ err = nlmsg_perm(nlmsg_type, perm, nlmsg_firewall_perms,
+ sizeof(nlmsg_firewall_perms));
+ break;
+
+ case SECCLASS_NETLINK_TCPDIAG_SOCKET:
+ err = nlmsg_perm(nlmsg_type, perm, nlmsg_tcpdiag_perms,
+ sizeof(nlmsg_tcpdiag_perms));
+ break;
+
+ case SECCLASS_NETLINK_XFRM_SOCKET:
+ err = nlmsg_perm(nlmsg_type, perm, nlmsg_xfrm_perms,
+ sizeof(nlmsg_xfrm_perms));
+ break;
+
+ case SECCLASS_NETLINK_AUDIT_SOCKET:
+ err = nlmsg_perm(nlmsg_type, perm, nlmsg_audit_perms,
+ sizeof(nlmsg_audit_perms));
+ break;
+
+ /* No messaging from userspace, or class unknown/unhandled */
+ default:
+ err = -ENOENT;
+ break;
+ }
+
+ return err;
+}