1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Multi-level security (MLS) policy operations. 4 * 5 * Author : Stephen Smalley, <sds@tycho.nsa.gov> 6 */ 7 /* 8 * Updated: Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com> 9 * 10 * Support for enhanced MLS infrastructure. 11 * 12 * Copyright (C) 2004-2006 Trusted Computer Solutions, Inc. 13 */ 14 /* 15 * Updated: Hewlett-Packard <paul@paul-moore.com> 16 * 17 * Added support to import/export the MLS label from NetLabel 18 * 19 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006 20 */ 21 22 #ifndef _SS_MLS_H_ 23 #define _SS_MLS_H_ 24 25 #include "context.h" 26 #include "policydb.h" 27 28 int mls_compute_context_len(struct policydb *p, struct context *context); 29 void mls_sid_to_context(struct policydb *p, struct context *context, 30 char **scontext); 31 int mls_context_isvalid(struct policydb *p, struct context *c); 32 int mls_range_isvalid(struct policydb *p, struct mls_range *r); 33 int mls_level_isvalid(struct policydb *p, struct mls_level *l); 34 35 int mls_context_to_sid(struct policydb *p, 36 char oldc, 37 char *scontext, 38 struct context *context, 39 struct sidtab *s, 40 u32 def_sid); 41 42 int mls_from_string(struct policydb *p, char *str, struct context *context, 43 gfp_t gfp_mask); 44 45 int mls_range_set(struct context *context, struct mls_range *range); 46 47 int mls_convert_context(struct policydb *oldp, 48 struct policydb *newp, 49 struct context *oldc, 50 struct context *newc); 51 52 int mls_compute_sid(struct policydb *p, 53 struct context *scontext, 54 struct context *tcontext, 55 u16 tclass, 56 u32 specified, 57 struct context *newcontext, 58 bool sock); 59 60 int mls_setup_user_range(struct policydb *p, 61 struct context *fromcon, struct user_datum *user, 62 struct context *usercon); 63 64 #ifdef CONFIG_NETLABEL 65 void mls_export_netlbl_lvl(struct policydb *p, 66 struct context *context, 67 struct netlbl_lsm_secattr *secattr); 68 void mls_import_netlbl_lvl(struct policydb *p, 69 struct context *context, 70 struct netlbl_lsm_secattr *secattr); 71 int mls_export_netlbl_cat(struct policydb *p, 72 struct context *context, 73 struct netlbl_lsm_secattr *secattr); 74 int mls_import_netlbl_cat(struct policydb *p, 75 struct context *context, 76 struct netlbl_lsm_secattr *secattr); 77 #else 78 static inline void mls_export_netlbl_lvl(struct policydb *p, 79 struct context *context, 80 struct netlbl_lsm_secattr *secattr) 81 { 82 return; 83 } 84 static inline void mls_import_netlbl_lvl(struct policydb *p, 85 struct context *context, 86 struct netlbl_lsm_secattr *secattr) 87 { 88 return; 89 } 90 static inline int mls_export_netlbl_cat(struct policydb *p, 91 struct context *context, 92 struct netlbl_lsm_secattr *secattr) 93 { 94 return -ENOMEM; 95 } 96 static inline int mls_import_netlbl_cat(struct policydb *p, 97 struct context *context, 98 struct netlbl_lsm_secattr *secattr) 99 { 100 return -ENOMEM; 101 } 102 #endif 103 104 #endif /* _SS_MLS_H */ 105 106