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security
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selinux
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include
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xfrm.h

xfrm.h 2.3 KB
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  1. /*
    2. 

  2.  * SELinux support for the XFRM LSM hooks
    3. 

  3.  *
    4. 

  4.  * Author : Trent Jaeger, <jaegert@us.ibm.com>
    5. 

  5.  * Updated : Venkat Yekkirala, <vyekkirala@TrustedCS.com>
    6. 

  6.  */
    7. 

  7. #ifndef _SELINUX_XFRM_H_
    8. 

  8. #define _SELINUX_XFRM_H_
    9. 

  9. 

  10. int selinux_xfrm_policy_alloc(struct xfrm_policy *xp,
    11. 

  11. 		struct xfrm_user_sec_ctx *sec_ctx);
    12. 

  12. int selinux_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new);
    13. 

  13. void selinux_xfrm_policy_free(struct xfrm_policy *xp);
    14. 

  14. int selinux_xfrm_policy_delete(struct xfrm_policy *xp);
    15. 

  15. int selinux_xfrm_state_alloc(struct xfrm_state *x,
    16. 

  16. 	struct xfrm_user_sec_ctx *sec_ctx, u32 secid);
    17. 

  17. void selinux_xfrm_state_free(struct xfrm_state *x);
    18. 

  18. int selinux_xfrm_state_delete(struct xfrm_state *x);
    19. 

  19. int selinux_xfrm_policy_lookup(struct xfrm_policy *xp, u32 fl_secid, u8 dir);
    20. 

  20. int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x,
    21. 

  21. 			struct xfrm_policy *xp, struct flowi *fl);
    22. 

  22. 

  23. /*
    24. 

  24.  * Extract the security blob from the sock (it's actually on the socket)
    25. 

  25.  */
    26. 

  26. static inline struct inode_security_struct *get_sock_isec(struct sock *sk)
    27. 

  27. {
    28. 

  28. 	if (!sk->sk_socket)
    29. 

  29. 		return NULL;
    30. 

  30. 

  31. 	return SOCK_INODE(sk->sk_socket)->i_security;
    32. 

  32. }
    33. 

  33. 

  34. #ifdef CONFIG_SECURITY_NETWORK_XFRM
    35. 

  35. extern atomic_t selinux_xfrm_refcount;
    36. 

  36. 

  37. static inline int selinux_xfrm_enabled(void)
    38. 

  38. {
    39. 

  39. 	return (atomic_read(&selinux_xfrm_refcount) > 0);
    40. 

  40. }
    41. 

  41. 

  42. int selinux_xfrm_sock_rcv_skb(u32 sid, struct sk_buff *skb,
    43. 

  43. 			struct avc_audit_data *ad);
    44. 

  44. int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
    45. 

  45. 			struct avc_audit_data *ad, u8 proto);
    46. 

  46. int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
    47. 

  47. 

  48. static inline void selinux_xfrm_notify_policyload(void)
    49. 

  49. {
    50. 

  50. 	atomic_inc(&flow_cache_genid);
    51. 

  51. }
    52. 

  52. #else
    53. 

  53. static inline int selinux_xfrm_enabled(void)
    54. 

  54. {
    55. 

  55. 	return 0;
    56. 

  56. }
    57. 

  57. 

  58. static inline int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb,
    59. 

  59. 			struct avc_audit_data *ad)
    60. 

  60. {
    61. 

  61. 	return 0;
    62. 

  62. }
    63. 

  63. 

  64. static inline int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
    65. 

  65. 			struct avc_audit_data *ad, u8 proto)
    66. 

  66. {
    67. 

  67. 	return 0;
    68. 

  68. }
    69. 

  69. 

  70. static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall)
    71. 

  71. {
    72. 

  72. 	*sid = SECSID_NULL;
    73. 

  73. 	return 0;
    74. 

  74. }
    75. 

  75. 

  76. static inline void selinux_xfrm_notify_policyload(void)
    77. 

  77. {
    78. 

  78. }
    79. 

  79. #endif
    80. 

  80. 

  81. static inline void selinux_skb_xfrm_sid(struct sk_buff *skb, u32 *sid)
    82. 

  82. {
    83. 

  83. 	int err = selinux_xfrm_decode_session(skb, sid, 0);
    84. 

  84. 	BUG_ON(err);
    85. 

  85. }
    86. 

  86. 

  87. #endif /* _SELINUX_XFRM_H_ */
    88.