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 *context); 50 51 int mls_compute_sid(struct policydb *p, 52 struct context *scontext, 53 struct context *tcontext, 54 u16 tclass, 55 u32 specified, 56 struct context *newcontext, 57 bool sock); 58 59 int mls_setup_user_range(struct policydb *p, 60 struct context *fromcon, struct user_datum *user, 61 struct context *usercon); 62 63 #ifdef CONFIG_NETLABEL 64 void mls_export_netlbl_lvl(struct policydb *p, 65 struct context *context, 66 struct netlbl_lsm_secattr *secattr); 67 void mls_import_netlbl_lvl(struct policydb *p, 68 struct context *context, 69 struct netlbl_lsm_secattr *secattr); 70 int mls_export_netlbl_cat(struct policydb *p, 71 struct context *context, 72 struct netlbl_lsm_secattr *secattr); 73 int mls_import_netlbl_cat(struct policydb *p, 74 struct context *context, 75 struct netlbl_lsm_secattr *secattr); 76 #else 77 static inline void mls_export_netlbl_lvl(struct policydb *p, 78 struct context *context, 79 struct netlbl_lsm_secattr *secattr) 80 { 81 return; 82 } 83 static inline void mls_import_netlbl_lvl(struct policydb *p, 84 struct context *context, 85 struct netlbl_lsm_secattr *secattr) 86 { 87 return; 88 } 89 static inline int mls_export_netlbl_cat(struct policydb *p, 90 struct context *context, 91 struct netlbl_lsm_secattr *secattr) 92 { 93 return -ENOMEM; 94 } 95 static inline int mls_import_netlbl_cat(struct policydb *p, 96 struct context *context, 97 struct netlbl_lsm_secattr *secattr) 98 { 99 return -ENOMEM; 100 } 101 #endif 102 103 #endif /* _SS_MLS_H */ 104 105