| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * SELinux support for the XFRM LSM hooks |
| 4 | * |
| 5 | * Author : Trent Jaeger, <jaegert@us.ibm.com> |
| 6 | * Updated : Venkat Yekkirala, <vyekkirala@TrustedCS.com> |
| 7 | */ |
| 8 | #ifndef _SELINUX_XFRM_H_ |
| 9 | #define _SELINUX_XFRM_H_ |
| 10 | |
| 11 | #include <net/flow.h> |
| 12 | |
| 13 | int selinux_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
| 14 | struct xfrm_user_sec_ctx *uctx, |
| 15 | gfp_t gfp); |
| 16 | int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
| 17 | struct xfrm_sec_ctx **new_ctxp); |
| 18 | void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx); |
| 19 | int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); |
| 20 | int selinux_xfrm_state_alloc(struct xfrm_state *x, |
| 21 | struct xfrm_user_sec_ctx *uctx); |
| 22 | int selinux_xfrm_state_alloc_acquire(struct xfrm_state *x, |
| 23 | struct xfrm_sec_ctx *polsec, u32 secid); |
| 24 | void selinux_xfrm_state_free(struct xfrm_state *x); |
| 25 | int selinux_xfrm_state_delete(struct xfrm_state *x); |
| 26 | int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); |
| 27 | int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x, |
| 28 | struct xfrm_policy *xp, |
| 29 | const struct flowi *fl); |
| 30 | |
| 31 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
| 32 | extern atomic_t selinux_xfrm_refcount; |
| 33 | |
| 34 | static inline int selinux_xfrm_enabled(void) |
| 35 | { |
| 36 | return (atomic_read(&selinux_xfrm_refcount) > 0); |
| 37 | } |
| 38 | |
| 39 | int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb, |
| 40 | struct common_audit_data *ad); |
| 41 | int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb, |
| 42 | struct common_audit_data *ad, u8 proto); |
| 43 | int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall); |
| 44 | int selinux_xfrm_skb_sid(struct sk_buff *skb, u32 *sid); |
| 45 | |
| 46 | static inline void selinux_xfrm_notify_policyload(void) |
| 47 | { |
| 48 | struct net *net; |
| 49 | |
| 50 | down_read(&net_rwsem); |
| 51 | for_each_net(net) |
| 52 | rt_genid_bump_all(net); |
| 53 | up_read(&net_rwsem); |
| 54 | } |
| 55 | #else |
| 56 | static inline int selinux_xfrm_enabled(void) |
| 57 | { |
| 58 | return 0; |
| 59 | } |
| 60 | |
| 61 | static inline int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb, |
| 62 | struct common_audit_data *ad) |
| 63 | { |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | static inline int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb, |
| 68 | struct common_audit_data *ad, |
| 69 | u8 proto) |
| 70 | { |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, |
| 75 | int ckall) |
| 76 | { |
| 77 | *sid = SECSID_NULL; |
| 78 | return 0; |
| 79 | } |
| 80 | |
| 81 | static inline void selinux_xfrm_notify_policyload(void) |
| 82 | { |
| 83 | } |
| 84 | |
| 85 | static inline int selinux_xfrm_skb_sid(struct sk_buff *skb, u32 *sid) |
| 86 | { |
| 87 | *sid = SECSID_NULL; |
| 88 | return 0; |
| 89 | } |
| 90 | #endif |
| 91 | |
| 92 | #endif /* _SELINUX_XFRM_H_ */ |