/* SPDX-License-Identifier: GPL-2.0 */ /* * SELinux support for the XFRM LSM hooks * * Author : Trent Jaeger, <jaegert@us.ibm.com> * Updated : Venkat Yekkirala, <vyekkirala@TrustedCS.com> */ #ifndef _SELINUX_XFRM_H_ #define _SELINUX_XFRM_H_ #include <linux/lsm_audit.h> #include <net/flow.h> #include <net/xfrm.h> int selinux_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *uctx, gfp_t gfp); int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx); int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); int selinux_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *uctx); int selinux_xfrm_state_alloc_acquire(struct xfrm_state *x, struct xfrm_sec_ctx *polsec, u32 secid); void selinux_xfrm_state_free(struct xfrm_state *x); int selinux_xfrm_state_delete(struct xfrm_state *x); int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x, struct xfrm_policy *xp, const struct flowi_common *flic); #ifdef CONFIG_SECURITY_NETWORK_XFRM extern atomic_t selinux_xfrm_refcount; static inline int selinux_xfrm_enabled(void) { return (atomic_read(&selinux_xfrm_refcount) > 0); } int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb, struct common_audit_data *ad); int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb, struct common_audit_data *ad, u8 proto); int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall); int selinux_xfrm_skb_sid(struct sk_buff *skb, u32 *sid); static inline void selinux_xfrm_notify_policyload(void) { struct net *net; down_read(&net_rwsem); for_each_net(net) rt_genid_bump_all(net); up_read(&net_rwsem); } #else static inline int selinux_xfrm_enabled(void) { return 0; } static inline int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb, struct common_audit_data *ad) { return 0; } static inline int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb, struct common_audit_data *ad, u8 proto) { return 0; } static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall) { *sid = SECSID_NULL; return 0; } static inline void selinux_xfrm_notify_policyload(void) { } static inline int selinux_xfrm_skb_sid(struct sk_buff *skb, u32 *sid) { *sid = SECSID_NULL; return 0; } #endif #endif /* _SELINUX_XFRM_H_ */