1 /* 2 * Multi-level security (MLS) policy operations. 3 * 4 * Author : Stephen Smalley, <sds@epoch.ncsc.mil> 5 */ 6 /* 7 * Updated: Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com> 8 * 9 * Support for enhanced MLS infrastructure. 10 * 11 * Copyright (C) 2004-2006 Trusted Computer Solutions, Inc. 12 */ 13 /* 14 * Updated: Hewlett-Packard <paul.moore@hp.com> 15 * 16 * Added support to import/export the MLS label from NetLabel 17 * 18 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006 19 */ 20 21 #ifndef _SS_MLS_H_ 22 #define _SS_MLS_H_ 23 24 #include "context.h" 25 #include "policydb.h" 26 27 int mls_compute_context_len(struct context *context); 28 void mls_sid_to_context(struct context *context, char **scontext); 29 int mls_context_isvalid(struct policydb *p, struct context *c); 30 int mls_range_isvalid(struct policydb *p, struct mls_range *r); 31 int mls_level_isvalid(struct policydb *p, struct mls_level *l); 32 33 int mls_context_to_sid(struct policydb *p, 34 char oldc, 35 char **scontext, 36 struct context *context, 37 struct sidtab *s, 38 u32 def_sid); 39 40 int mls_from_string(char *str, struct context *context, gfp_t gfp_mask); 41 42 int mls_convert_context(struct policydb *oldp, 43 struct policydb *newp, 44 struct context *context); 45 46 int mls_compute_sid(struct context *scontext, 47 struct context *tcontext, 48 u16 tclass, 49 u32 specified, 50 struct context *newcontext); 51 52 int mls_setup_user_range(struct context *fromcon, struct user_datum *user, 53 struct context *usercon); 54 55 #ifdef CONFIG_NETLABEL 56 void mls_export_netlbl_lvl(struct context *context, 57 struct netlbl_lsm_secattr *secattr); 58 void mls_import_netlbl_lvl(struct context *context, 59 struct netlbl_lsm_secattr *secattr); 60 int mls_export_netlbl_cat(struct context *context, 61 struct netlbl_lsm_secattr *secattr); 62 int mls_import_netlbl_cat(struct context *context, 63 struct netlbl_lsm_secattr *secattr); 64 #else 65 static inline void mls_export_netlbl_lvl(struct context *context, 66 struct netlbl_lsm_secattr *secattr) 67 { 68 return; 69 } 70 static inline void mls_import_netlbl_lvl(struct context *context, 71 struct netlbl_lsm_secattr *secattr) 72 { 73 return; 74 } 75 static inline int mls_export_netlbl_cat(struct context *context, 76 struct netlbl_lsm_secattr *secattr) 77 { 78 return -ENOMEM; 79 } 80 static inline int mls_import_netlbl_cat(struct context *context, 81 struct netlbl_lsm_secattr *secattr) 82 { 83 return -ENOMEM; 84 } 85 #endif 86 87 #endif /* _SS_MLS_H */ 88 89