[mirror_ubuntu-hirsute-kernel.git] / security / selinux / nlmsgtab.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * 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>
 */
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/if.h>
#include <linux/inet_diag.h>
#include <linux/xfrm.h>
#include <linux/audit.h>
#include <linux/sock_diag.h>

#include "flask.h"
#include "av_permissions.h"
#include "security.h"

struct nlmsg_perm {
	u16	nlmsg_type;
	u32	perm;
};

static const 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_GETMULTICAST,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_GETANYCAST,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_GETNEIGHTBL,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_SETNEIGHTBL,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_NEWADDRLABEL,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_DELADDRLABEL,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_GETADDRLABEL,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_GETDCB,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_SETDCB,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_NEWNETCONF,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_DELNETCONF,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_GETNETCONF,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_NEWMDB,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_DELMDB,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE  },
	{ RTM_GETMDB,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_NEWNSID,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_DELNSID,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_GETNSID,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_NEWSTATS,		NETLINK_ROUTE_SOCKET__NLMSG_READ },
	{ RTM_GETSTATS,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_NEWCACHEREPORT,	NETLINK_ROUTE_SOCKET__NLMSG_READ },
	{ RTM_NEWCHAIN,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_DELCHAIN,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_GETCHAIN,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_NEWNEXTHOP,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_DELNEXTHOP,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_GETNEXTHOP,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
	{ RTM_NEWLINKPROP,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_DELLINKPROP,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_NEWVLAN,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_DELVLAN,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	{ RTM_GETVLAN,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
};

static const struct nlmsg_perm nlmsg_tcpdiag_perms[] =
{
	{ TCPDIAG_GETSOCK,	NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
	{ DCCPDIAG_GETSOCK,	NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
	{ SOCK_DIAG_BY_FAMILY,	NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
	{ SOCK_DESTROY,		NETLINK_TCPDIAG_SOCKET__NLMSG_WRITE },
};

static const 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_ACQUIRE,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	{ XFRM_MSG_EXPIRE,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	{ XFRM_MSG_UPDPOLICY,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	{ XFRM_MSG_UPDSA,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	{ XFRM_MSG_POLEXPIRE,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	{ XFRM_MSG_FLUSHSA,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	{ XFRM_MSG_FLUSHPOLICY,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	{ XFRM_MSG_NEWAE,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	{ XFRM_MSG_GETAE,	NETLINK_XFRM_SOCKET__NLMSG_READ  },
	{ XFRM_MSG_REPORT,	NETLINK_XFRM_SOCKET__NLMSG_READ  },
	{ XFRM_MSG_MIGRATE,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	{ XFRM_MSG_NEWSADINFO,	NETLINK_XFRM_SOCKET__NLMSG_READ  },
	{ XFRM_MSG_GETSADINFO,	NETLINK_XFRM_SOCKET__NLMSG_READ  },
	{ XFRM_MSG_NEWSPDINFO,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	{ XFRM_MSG_GETSPDINFO,	NETLINK_XFRM_SOCKET__NLMSG_READ  },
	{ XFRM_MSG_MAPPING,	NETLINK_XFRM_SOCKET__NLMSG_READ  },
};

static const 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_READPRIV },
	{ AUDIT_ADD,		NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
	{ AUDIT_DEL,		NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
	{ AUDIT_LIST_RULES,	NETLINK_AUDIT_SOCKET__NLMSG_READPRIV },
	{ AUDIT_ADD_RULE,	NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
	{ AUDIT_DEL_RULE,	NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
	{ AUDIT_USER,		NETLINK_AUDIT_SOCKET__NLMSG_RELAY    },
	{ AUDIT_SIGNAL_INFO,	NETLINK_AUDIT_SOCKET__NLMSG_READ     },
	{ AUDIT_TRIM,		NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
	{ AUDIT_MAKE_EQUIV,	NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
	{ AUDIT_TTY_GET,	NETLINK_AUDIT_SOCKET__NLMSG_READ     },
	{ AUDIT_TTY_SET,	NETLINK_AUDIT_SOCKET__NLMSG_TTY_AUDIT	},
	{ AUDIT_GET_FEATURE,	NETLINK_AUDIT_SOCKET__NLMSG_READ     },
	{ AUDIT_SET_FEATURE,	NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
};


static int nlmsg_perm(u16 nlmsg_type, u32 *perm, const 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:
		/* RTM_MAX always points to RTM_SETxxxx, ie RTM_NEWxxx + 3.
		 * If the BUILD_BUG_ON() below fails you must update the
		 * structures at the top of this file with the new mappings
		 * before updating the BUILD_BUG_ON() macro!
		 */
		BUILD_BUG_ON(RTM_MAX != (RTM_NEWVLAN + 3));
		err = nlmsg_perm(nlmsg_type, perm, nlmsg_route_perms,
				 sizeof(nlmsg_route_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:
		/* If the BUILD_BUG_ON() below fails you must update the
		 * structures at the top of this file with the new mappings
		 * before updating the BUILD_BUG_ON() macro!
		 */
		BUILD_BUG_ON(XFRM_MSG_MAX != XFRM_MSG_MAPPING);
		err = nlmsg_perm(nlmsg_type, perm, nlmsg_xfrm_perms,
				 sizeof(nlmsg_xfrm_perms));
		break;

	case SECCLASS_NETLINK_AUDIT_SOCKET:
		if ((nlmsg_type >= AUDIT_FIRST_USER_MSG &&
		     nlmsg_type <= AUDIT_LAST_USER_MSG) ||
		    (nlmsg_type >= AUDIT_FIRST_USER_MSG2 &&
		     nlmsg_type <= AUDIT_LAST_USER_MSG2)) {
			*perm = NETLINK_AUDIT_SOCKET__NLMSG_RELAY;
		} else {
			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;
}
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
1da177e4 LT	2	/*
	3	* Netlink message type permission tables, for user generated messages.
	4	*
	5	* Author: James Morris <jmorris@redhat.com>
	6	*
	7	* Copyright (C) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
1da177e4 LT	8	*/
	9	#include <linux/types.h>
	10	#include <linux/kernel.h>
1da177e4 LT	11	#include <linux/netlink.h>
	12	#include <linux/rtnetlink.h>
	13	#include <linux/if.h>
216efaaa	14	#include <linux/inet_diag.h>
1da177e4 LT	15	#include <linux/xfrm.h>
1da177e4 LT	16	#include <linux/audit.h>
6a96e150	17	#include <linux/sock_diag.h>
1da177e4 LT	18
	19	#include "flask.h"
	20	#include "av_permissions.h"
6a3fbe81	21	#include "security.h"
1da177e4	22
bfff3aa4	23	struct nlmsg_perm {
1da177e4 LT	24	u16 nlmsg_type;
	25	u32 perm;
	26	};
	27
579fc0dc	28	static const struct nlmsg_perm nlmsg_route_perms[] =
1da177e4 LT	29	{
	30	{ RTM_NEWLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	31	{ RTM_DELLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	32	{ RTM_GETLINK, NETLINK_ROUTE_SOCKET__NLMSG_READ },
	33	{ RTM_SETLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	34	{ RTM_NEWADDR, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	35	{ RTM_DELADDR, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	36	{ RTM_GETADDR, NETLINK_ROUTE_SOCKET__NLMSG_READ },
	37	{ RTM_NEWROUTE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	38	{ RTM_DELROUTE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	39	{ RTM_GETROUTE, NETLINK_ROUTE_SOCKET__NLMSG_READ },
	40	{ RTM_NEWNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	41	{ RTM_DELNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	42	{ RTM_GETNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_READ },
	43	{ RTM_NEWRULE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	44	{ RTM_DELRULE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	45	{ RTM_GETRULE, NETLINK_ROUTE_SOCKET__NLMSG_READ },
	46	{ RTM_NEWQDISC, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	47	{ RTM_DELQDISC, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	48	{ RTM_GETQDISC, NETLINK_ROUTE_SOCKET__NLMSG_READ },
	49	{ RTM_NEWTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	50	{ RTM_DELTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	51	{ RTM_GETTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_READ },
	52	{ RTM_NEWTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	53	{ RTM_DELTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	54	{ RTM_GETTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_READ },
	55	{ RTM_NEWACTION, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	56	{ RTM_DELACTION, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	57	{ RTM_GETACTION, NETLINK_ROUTE_SOCKET__NLMSG_READ },
	58	{ RTM_NEWPREFIX, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
1da177e4 LT	59	{ RTM_GETMULTICAST, NETLINK_ROUTE_SOCKET__NLMSG_READ },
1da177e4 LT	60	{ RTM_GETANYCAST, NETLINK_ROUTE_SOCKET__NLMSG_READ },
c7fb64db TG	61	{ RTM_GETNEIGHTBL, NETLINK_ROUTE_SOCKET__NLMSG_READ },
c7fb64db TG	62	{ RTM_SETNEIGHTBL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
2f99db28 MS	63	{ RTM_NEWADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	64	{ RTM_DELADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	65	{ RTM_GETADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_READ },
350e4f31 EP	66	{ RTM_GETDCB, NETLINK_ROUTE_SOCKET__NLMSG_READ },
350e4f31 EP	67	{ RTM_SETDCB, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
6e73d71d	68	{ RTM_NEWNETCONF, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
983701eb	69	{ RTM_DELNETCONF, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
6e73d71d	70	{ RTM_GETNETCONF, NETLINK_ROUTE_SOCKET__NLMSG_READ },
9dd9ff99 AW	71	{ RTM_NEWMDB, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
9dd9ff99 AW	72	{ RTM_DELMDB, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
ee07c6e7	73	{ RTM_GETMDB, NETLINK_ROUTE_SOCKET__NLMSG_READ },
5bdfbc1f	74	{ RTM_NEWNSID, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
387f989a	75	{ RTM_DELNSID, NETLINK_ROUTE_SOCKET__NLMSG_READ },
5bdfbc1f	76	{ RTM_GETNSID, NETLINK_ROUTE_SOCKET__NLMSG_READ },
10c9ead9 RP	77	{ RTM_NEWSTATS, NETLINK_ROUTE_SOCKET__NLMSG_READ },
10c9ead9 RP	78	{ RTM_GETSTATS, NETLINK_ROUTE_SOCKET__NLMSG_READ },
94df30a6	79	{ RTM_NEWCACHEREPORT, NETLINK_ROUTE_SOCKET__NLMSG_READ },
598e1a42 PM	80	{ RTM_NEWCHAIN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	81	{ RTM_DELCHAIN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	82	{ RTM_GETCHAIN, NETLINK_ROUTE_SOCKET__NLMSG_READ },
65ee00a9 DA	83	{ RTM_NEWNEXTHOP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	84	{ RTM_DELNEXTHOP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	85	{ RTM_GETNEXTHOP, NETLINK_ROUTE_SOCKET__NLMSG_READ },
36fbf1e5 JP	86	{ RTM_NEWLINKPROP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
36fbf1e5 JP	87	{ RTM_DELLINKPROP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
8dcea187 NA	88	{ RTM_NEWVLAN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	89	{ RTM_DELVLAN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
	90	{ RTM_GETVLAN, NETLINK_ROUTE_SOCKET__NLMSG_READ },
1da177e4 LT	91	};
1da177e4 LT	92
579fc0dc	93	static const struct nlmsg_perm nlmsg_tcpdiag_perms[] =
1da177e4 LT	94	{
1da177e4 LT	95	{ TCPDIAG_GETSOCK, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
216efaaa	96	{ DCCPDIAG_GETSOCK, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
6a96e150	97	{ SOCK_DIAG_BY_FAMILY, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
08ff924e	98	{ SOCK_DESTROY, NETLINK_TCPDIAG_SOCKET__NLMSG_WRITE },
1da177e4 LT	99	};
1da177e4 LT	100
579fc0dc	101	static const struct nlmsg_perm nlmsg_xfrm_perms[] =
1da177e4 LT	102	{
	103	{ XFRM_MSG_NEWSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	104	{ XFRM_MSG_DELSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	105	{ XFRM_MSG_GETSA, NETLINK_XFRM_SOCKET__NLMSG_READ },
	106	{ XFRM_MSG_NEWPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	107	{ XFRM_MSG_DELPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	108	{ XFRM_MSG_GETPOLICY, NETLINK_XFRM_SOCKET__NLMSG_READ },
	109	{ XFRM_MSG_ALLOCSPI, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
8c29bfe1 JHS	110	{ XFRM_MSG_ACQUIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
8c29bfe1 JHS	111	{ XFRM_MSG_EXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
1da177e4 LT	112	{ XFRM_MSG_UPDPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
1da177e4 LT	113	{ XFRM_MSG_UPDSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
8c29bfe1 JHS	114	{ XFRM_MSG_POLEXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	115	{ XFRM_MSG_FLUSHSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	116	{ XFRM_MSG_FLUSHPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	117	{ XFRM_MSG_NEWAE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
	118	{ XFRM_MSG_GETAE, NETLINK_XFRM_SOCKET__NLMSG_READ },
b0b59b00	119	{ XFRM_MSG_REPORT, NETLINK_XFRM_SOCKET__NLMSG_READ },
8d465bb7	120	{ XFRM_MSG_MIGRATE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
5b5800fa ND	121	{ XFRM_MSG_NEWSADINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
5b5800fa ND	122	{ XFRM_MSG_GETSADINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
2b7834d3	123	{ XFRM_MSG_NEWSPDINFO, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
5e6deeba	124	{ XFRM_MSG_GETSPDINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
bd2cba07	125	{ XFRM_MSG_MAPPING, NETLINK_XFRM_SOCKET__NLMSG_READ },
1da177e4 LT	126	};
1da177e4 LT	127
579fc0dc	128	static const struct nlmsg_perm nlmsg_audit_perms[] =
1da177e4	129	{
b207a290 JM	130	{ AUDIT_GET, NETLINK_AUDIT_SOCKET__NLMSG_READ },
	131	{ AUDIT_SET, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
	132	{ AUDIT_LIST, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV },
	133	{ AUDIT_ADD, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
	134	{ AUDIT_DEL, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
93315ed6 AG	135	{ AUDIT_LIST_RULES, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV },
	136	{ AUDIT_ADD_RULE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
	137	{ AUDIT_DEL_RULE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
b207a290	138	{ AUDIT_USER, NETLINK_AUDIT_SOCKET__NLMSG_RELAY },
c2f0c7c3	139	{ AUDIT_SIGNAL_INFO, NETLINK_AUDIT_SOCKET__NLMSG_READ },
850b0cee EP	140	{ AUDIT_TRIM, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
850b0cee EP	141	{ AUDIT_MAKE_EQUIV, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
522ed776	142	{ AUDIT_TTY_GET, NETLINK_AUDIT_SOCKET__NLMSG_READ },
dd34b5d7	143	{ AUDIT_TTY_SET, NETLINK_AUDIT_SOCKET__NLMSG_TTY_AUDIT },
b805b198 EP	144	{ AUDIT_GET_FEATURE, NETLINK_AUDIT_SOCKET__NLMSG_READ },
b805b198 EP	145	{ AUDIT_SET_FEATURE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
1da177e4 LT	146	};
	147
	148
579fc0dc	149	static int nlmsg_perm(u16 nlmsg_type, u32 perm, const struct nlmsg_perm tab, size_t tabsize)
1da177e4 LT	150	{
	151	int i, err = -EINVAL;
	152
	153	for (i = 0; i < tabsize/sizeof(struct nlmsg_perm); i++)
	154	if (nlmsg_type == tab[i].nlmsg_type) {
	155	*perm = tab[i].perm;
	156	err = 0;
	157	break;
	158	}
	159
	160	return err;
	161	}
	162
	163	int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm)
	164	{
	165	int err = 0;
	166
	167	switch (sclass) {
	168	case SECCLASS_NETLINK_ROUTE_SOCKET:
598e1a42 PM	169	/* RTM_MAX always points to RTM_SETxxxx, ie RTM_NEWxxx + 3.
	170	* If the BUILD_BUG_ON() below fails you must update the
	171	* structures at the top of this file with the new mappings
	172	* before updating the BUILD_BUG_ON() macro!
	173	*/
8dcea187	174	BUILD_BUG_ON(RTM_MAX != (RTM_NEWVLAN + 3));
1da177e4 LT	175	err = nlmsg_perm(nlmsg_type, perm, nlmsg_route_perms,
	176	sizeof(nlmsg_route_perms));
	177	break;
	178
1da177e4 LT	179	case SECCLASS_NETLINK_TCPDIAG_SOCKET:
	180	err = nlmsg_perm(nlmsg_type, perm, nlmsg_tcpdiag_perms,
	181	sizeof(nlmsg_tcpdiag_perms));
	182	break;
	183
	184	case SECCLASS_NETLINK_XFRM_SOCKET:
598e1a42 PM	185	/* If the BUILD_BUG_ON() below fails you must update the
	186	* structures at the top of this file with the new mappings
	187	* before updating the BUILD_BUG_ON() macro!
	188	*/
cf890138	189	BUILD_BUG_ON(XFRM_MSG_MAX != XFRM_MSG_MAPPING);
1da177e4 LT	190	err = nlmsg_perm(nlmsg_type, perm, nlmsg_xfrm_perms,
	191	sizeof(nlmsg_xfrm_perms));
	192	break;
	193
	194	case SECCLASS_NETLINK_AUDIT_SOCKET:
90d526c0 SG	195	if ((nlmsg_type >= AUDIT_FIRST_USER_MSG &&
	196	nlmsg_type <= AUDIT_LAST_USER_MSG) \|\|
	197	(nlmsg_type >= AUDIT_FIRST_USER_MSG2 &&
bfff3aa4	198	nlmsg_type <= AUDIT_LAST_USER_MSG2)) {
209aba03 DW	199	*perm = NETLINK_AUDIT_SOCKET__NLMSG_RELAY;
	200	} else {
	201	err = nlmsg_perm(nlmsg_type, perm, nlmsg_audit_perms,
	202	sizeof(nlmsg_audit_perms));
	203	}
1da177e4 LT	204	break;
	205
	206	/* No messaging from userspace, or class unknown/unhandled */
	207	default:
	208	err = -ENOENT;
	209	break;
	210	}
	211
	212	return err;
	213	}