diff options
Diffstat (limited to 'security/selinux/include/xfrm.h')
| -rw-r--r-- | security/selinux/include/xfrm.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/security/selinux/include/xfrm.h b/security/selinux/include/xfrm.h new file mode 100644 index 000000000..c75839860 --- /dev/null +++ b/security/selinux/include/xfrm.h @@ -0,0 +1,94 @@ +/* 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_ */ |