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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/security/selinux/include/xfrm.h
10817 views
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/*

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 * SELinux support for the XFRM LSM hooks

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 *

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 * Author : Trent Jaeger, <[email protected]>

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 * Updated : Venkat Yekkirala, <[email protected]>

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 */

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#ifndef _SELINUX_XFRM_H_

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#define _SELINUX_XFRM_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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	atomic_inc(&flow_cache_genid);

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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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