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![Christian Göttsche](/assets/img/avatar_default.png)
Reported by checkpatch: security/selinux/nlmsgtab.c --------------------------- ERROR: that open brace { should be on the previous line #29: FILE: security/selinux/nlmsgtab.c:29: +static const struct nlmsg_perm nlmsg_route_perms[] = +{ ERROR: that open brace { should be on the previous line #97: FILE: security/selinux/nlmsgtab.c:97: +static const struct nlmsg_perm nlmsg_tcpdiag_perms[] = +{ ERROR: that open brace { should be on the previous line #105: FILE: security/selinux/nlmsgtab.c:105: +static const struct nlmsg_perm nlmsg_xfrm_perms[] = +{ ERROR: that open brace { should be on the previous line #134: FILE: security/selinux/nlmsgtab.c:134: +static const struct nlmsg_perm nlmsg_audit_perms[] = +{ security/selinux/ss/policydb.c ------------------------------ ERROR: that open brace { should be on the previous line #318: FILE: security/selinux/ss/policydb.c:318: +static int (*destroy_f[SYM_NUM]) (void *key, void *datum, void *datap) = +{ ERROR: that open brace { should be on the previous line #674: FILE: security/selinux/ss/policydb.c:674: +static int (*index_f[SYM_NUM]) (void *key, void *datum, void *datap) = +{ ERROR: that open brace { should be on the previous line #1643: FILE: security/selinux/ss/policydb.c:1643: +static int (*read_f[SYM_NUM]) (struct policydb *p, struct symtab *s, void *fp) = +{ ERROR: that open brace { should be on the previous line #3246: FILE: security/selinux/ss/policydb.c:3246: + void *datap) = +{ Signed-off-by: Christian Göttsche <cgzones@googlemail.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
218 lines
8.8 KiB
C
218 lines
8.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Netlink message type permission tables, for user generated messages.
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*
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* Author: James Morris <jmorris@redhat.com>
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*
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* Copyright (C) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/netlink.h>
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#include <linux/rtnetlink.h>
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#include <linux/if.h>
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#include <linux/inet_diag.h>
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#include <linux/xfrm.h>
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#include <linux/audit.h>
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#include <linux/sock_diag.h>
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#include "flask.h"
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#include "av_permissions.h"
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#include "security.h"
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struct nlmsg_perm {
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u16 nlmsg_type;
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u32 perm;
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};
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static const struct nlmsg_perm nlmsg_route_perms[] = {
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{ RTM_NEWLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETLINK, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_SETLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_NEWADDR, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELADDR, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETADDR, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWROUTE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELROUTE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETROUTE, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWRULE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELRULE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETRULE, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWQDISC, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELQDISC, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETQDISC, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWACTION, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELACTION, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETACTION, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWPREFIX, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETMULTICAST, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_GETANYCAST, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_GETNEIGHTBL, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_SETNEIGHTBL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_NEWADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_GETDCB, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_SETDCB, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_NEWNETCONF, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELNETCONF, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETNETCONF, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWMDB, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELMDB, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETMDB, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWNSID, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELNSID, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_GETNSID, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWSTATS, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_GETSTATS, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_SETSTATS, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_NEWCACHEREPORT, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWCHAIN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELCHAIN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETCHAIN, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWNEXTHOP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELNEXTHOP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETNEXTHOP, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWLINKPROP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELLINKPROP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_NEWVLAN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELVLAN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETVLAN, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWNEXTHOPBUCKET, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELNEXTHOPBUCKET, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETNEXTHOPBUCKET, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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{ RTM_NEWTUNNEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_DELTUNNEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
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{ RTM_GETTUNNEL, NETLINK_ROUTE_SOCKET__NLMSG_READ },
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};
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static const struct nlmsg_perm nlmsg_tcpdiag_perms[] = {
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{ TCPDIAG_GETSOCK, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
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{ DCCPDIAG_GETSOCK, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
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{ SOCK_DIAG_BY_FAMILY, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
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{ SOCK_DESTROY, NETLINK_TCPDIAG_SOCKET__NLMSG_WRITE },
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};
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static const struct nlmsg_perm nlmsg_xfrm_perms[] = {
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{ XFRM_MSG_NEWSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_DELSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_GETSA, NETLINK_XFRM_SOCKET__NLMSG_READ },
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{ XFRM_MSG_NEWPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_DELPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_GETPOLICY, NETLINK_XFRM_SOCKET__NLMSG_READ },
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{ XFRM_MSG_ALLOCSPI, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_ACQUIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_EXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_UPDPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_UPDSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_POLEXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_FLUSHSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_FLUSHPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_NEWAE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_GETAE, NETLINK_XFRM_SOCKET__NLMSG_READ },
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{ XFRM_MSG_REPORT, NETLINK_XFRM_SOCKET__NLMSG_READ },
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{ XFRM_MSG_MIGRATE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_NEWSADINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
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{ XFRM_MSG_GETSADINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
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{ XFRM_MSG_NEWSPDINFO, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_GETSPDINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
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{ XFRM_MSG_MAPPING, NETLINK_XFRM_SOCKET__NLMSG_READ },
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{ XFRM_MSG_SETDEFAULT, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
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{ XFRM_MSG_GETDEFAULT, NETLINK_XFRM_SOCKET__NLMSG_READ },
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};
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static const struct nlmsg_perm nlmsg_audit_perms[] = {
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{ AUDIT_GET, NETLINK_AUDIT_SOCKET__NLMSG_READ },
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{ AUDIT_SET, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
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{ AUDIT_LIST, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV },
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{ AUDIT_ADD, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
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{ AUDIT_DEL, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
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{ AUDIT_LIST_RULES, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV },
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{ AUDIT_ADD_RULE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
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{ AUDIT_DEL_RULE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
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{ AUDIT_USER, NETLINK_AUDIT_SOCKET__NLMSG_RELAY },
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{ AUDIT_SIGNAL_INFO, NETLINK_AUDIT_SOCKET__NLMSG_READ },
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{ AUDIT_TRIM, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
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{ AUDIT_MAKE_EQUIV, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
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{ AUDIT_TTY_GET, NETLINK_AUDIT_SOCKET__NLMSG_READ },
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{ AUDIT_TTY_SET, NETLINK_AUDIT_SOCKET__NLMSG_TTY_AUDIT },
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{ AUDIT_GET_FEATURE, NETLINK_AUDIT_SOCKET__NLMSG_READ },
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{ AUDIT_SET_FEATURE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
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};
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static int nlmsg_perm(u16 nlmsg_type, u32 *perm, const struct nlmsg_perm *tab, size_t tabsize)
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{
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int i, err = -EINVAL;
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for (i = 0; i < tabsize/sizeof(struct nlmsg_perm); i++)
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if (nlmsg_type == tab[i].nlmsg_type) {
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*perm = tab[i].perm;
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err = 0;
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break;
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}
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return err;
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}
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int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm)
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{
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int err = 0;
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switch (sclass) {
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case SECCLASS_NETLINK_ROUTE_SOCKET:
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/* RTM_MAX always points to RTM_SETxxxx, ie RTM_NEWxxx + 3.
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* If the BUILD_BUG_ON() below fails you must update the
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* structures at the top of this file with the new mappings
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* before updating the BUILD_BUG_ON() macro!
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*/
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BUILD_BUG_ON(RTM_MAX != (RTM_NEWTUNNEL + 3));
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err = nlmsg_perm(nlmsg_type, perm, nlmsg_route_perms,
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sizeof(nlmsg_route_perms));
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break;
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case SECCLASS_NETLINK_TCPDIAG_SOCKET:
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err = nlmsg_perm(nlmsg_type, perm, nlmsg_tcpdiag_perms,
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sizeof(nlmsg_tcpdiag_perms));
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break;
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case SECCLASS_NETLINK_XFRM_SOCKET:
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/* If the BUILD_BUG_ON() below fails you must update the
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* structures at the top of this file with the new mappings
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* before updating the BUILD_BUG_ON() macro!
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*/
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BUILD_BUG_ON(XFRM_MSG_MAX != XFRM_MSG_GETDEFAULT);
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err = nlmsg_perm(nlmsg_type, perm, nlmsg_xfrm_perms,
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sizeof(nlmsg_xfrm_perms));
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break;
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case SECCLASS_NETLINK_AUDIT_SOCKET:
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if ((nlmsg_type >= AUDIT_FIRST_USER_MSG &&
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nlmsg_type <= AUDIT_LAST_USER_MSG) ||
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(nlmsg_type >= AUDIT_FIRST_USER_MSG2 &&
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nlmsg_type <= AUDIT_LAST_USER_MSG2)) {
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*perm = NETLINK_AUDIT_SOCKET__NLMSG_RELAY;
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} else {
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err = nlmsg_perm(nlmsg_type, perm, nlmsg_audit_perms,
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sizeof(nlmsg_audit_perms));
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}
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break;
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/* No messaging from userspace, or class unknown/unhandled */
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default:
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err = -ENOENT;
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break;
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}
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return err;
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}
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