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(char oldc, 34 char **scontext, 35 struct context *context, 36 struct sidtab *s, 37 u32 def_sid); 38 39 int mls_from_string(char *str, struct context *context, gfp_t gfp_mask); 40 41 int mls_convert_context(struct policydb *oldp, 42 struct policydb *newp, 43 struct context *context); 44 45 int mls_compute_sid(struct context *scontext, 46 struct context *tcontext, 47 u16 tclass, 48 u32 specified, 49 struct context *newcontext); 50 51 int mls_setup_user_range(struct context *fromcon, struct user_datum *user, 52 struct context *usercon); 53 54 #ifdef CONFIG_NETLABEL 55 void mls_export_netlbl_lvl(struct context *context, 56 struct netlbl_lsm_secattr *secattr); 57 void mls_import_netlbl_lvl(struct context *context, 58 struct netlbl_lsm_secattr *secattr); 59 int mls_export_netlbl_cat(struct context *context, 60 struct netlbl_lsm_secattr *secattr); 61 int mls_import_netlbl_cat(struct context *context, 62 struct netlbl_lsm_secattr *secattr); 63 #else 64 static inline void mls_export_netlbl_lvl(struct context *context, 65 struct netlbl_lsm_secattr *secattr) 66 { 67 return; 68 } 69 static inline void mls_import_netlbl_lvl(struct context *context, 70 struct netlbl_lsm_secattr *secattr) 71 { 72 return; 73 } 74 static inline int mls_export_netlbl_cat(struct context *context, 75 struct netlbl_lsm_secattr *secattr) 76 { 77 return -ENOMEM; 78 } 79 static inline int mls_import_netlbl_cat(struct context *context, 80 struct netlbl_lsm_secattr *secattr) 81 { 82 return -ENOMEM; 83 } 84 #endif 85 86 #endif /* _SS_MLS_H */ 87 88