ca4c3fc24e
Current net name space has only one genid for both IPv4 and IPv6, it has below drawbacks: - Add/delete an IPv4 address will invalidate all IPv6 routing table entries. - Insert/remove XFRM policy will also invalidate both IPv4/IPv6 routing table entries even when the policy is only applied for one address family. Thus, this patch attempt to split one genid for two to cater for IPv4 and IPv6 separately in a fine granularity. Signed-off-by: Fan Du <fan.du@windriver.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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* SELinux support for the XFRM LSM hooks
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*
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* Author : Trent Jaeger, <jaegert@us.ibm.com>
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* Updated : Venkat Yekkirala, <vyekkirala@TrustedCS.com>
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*/
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#ifndef _SELINUX_XFRM_H_
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#define _SELINUX_XFRM_H_
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#include <net/flow.h>
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int selinux_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
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struct xfrm_user_sec_ctx *sec_ctx);
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int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
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struct xfrm_sec_ctx **new_ctxp);
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void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
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int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
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int selinux_xfrm_state_alloc(struct xfrm_state *x,
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struct xfrm_user_sec_ctx *sec_ctx, u32 secid);
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void selinux_xfrm_state_free(struct xfrm_state *x);
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int selinux_xfrm_state_delete(struct xfrm_state *x);
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int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
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int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x,
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struct xfrm_policy *xp, const struct flowi *fl);
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/*
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* Extract the security blob from the sock (it's actually on the socket)
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*/
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static inline struct inode_security_struct *get_sock_isec(struct sock *sk)
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{
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if (!sk->sk_socket)
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return NULL;
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return SOCK_INODE(sk->sk_socket)->i_security;
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}
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#ifdef CONFIG_SECURITY_NETWORK_XFRM
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extern atomic_t selinux_xfrm_refcount;
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static inline int selinux_xfrm_enabled(void)
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{
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return (atomic_read(&selinux_xfrm_refcount) > 0);
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}
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int selinux_xfrm_sock_rcv_skb(u32 sid, struct sk_buff *skb,
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struct common_audit_data *ad);
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int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
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struct common_audit_data *ad, u8 proto);
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int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
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static inline void selinux_xfrm_notify_policyload(void)
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{
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struct net *net;
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atomic_inc(&flow_cache_genid);
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rtnl_lock();
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for_each_net(net)
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rt_genid_bump_all(net);
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rtnl_unlock();
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}
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#else
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static inline int selinux_xfrm_enabled(void)
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{
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return 0;
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}
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static inline int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb,
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struct common_audit_data *ad)
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{
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return 0;
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}
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static inline int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
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struct common_audit_data *ad, u8 proto)
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{
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return 0;
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}
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static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall)
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{
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*sid = SECSID_NULL;
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return 0;
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}
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static inline void selinux_xfrm_notify_policyload(void)
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{
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}
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#endif
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static inline void selinux_skb_xfrm_sid(struct sk_buff *skb, u32 *sid)
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{
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int err = selinux_xfrm_decode_session(skb, sid, 0);
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BUG_ON(err);
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}
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#endif /* _SELINUX_XFRM_H_ */
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