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 context *context); 29 void mls_sid_to_context(struct context *context, char **scontext); 30 int mls_context_isvalid(struct policydb *p, struct context *c); 31 int mls_range_isvalid(struct policydb *p, struct mls_range *r); 32 int mls_level_isvalid(struct policydb *p, struct mls_level *l); 33 34 int mls_context_to_sid(struct policydb *p, 35 char oldc, 36 char **scontext, 37 struct context *context, 38 struct sidtab *s, 39 u32 def_sid); 40 41 int mls_from_string(char *str, struct context *context, gfp_t gfp_mask); 42 43 int mls_range_set(struct context *context, struct mls_range *range); 44 45 int mls_convert_context(struct policydb *oldp, 46 struct policydb *newp, 47 struct context *context); 48 49 int mls_compute_sid(struct context *scontext, 50 struct context *tcontext, 51 u16 tclass, 52 u32 specified, 53 struct context *newcontext, 54 bool sock); 55 56 int mls_setup_user_range(struct context *fromcon, struct user_datum *user, 57 struct context *usercon); 58 59 #ifdef CONFIG_NETLABEL 60 void mls_export_netlbl_lvl(struct context *context, 61 struct netlbl_lsm_secattr *secattr); 62 void mls_import_netlbl_lvl(struct context *context, 63 struct netlbl_lsm_secattr *secattr); 64 int mls_export_netlbl_cat(struct context *context, 65 struct netlbl_lsm_secattr *secattr); 66 int mls_import_netlbl_cat(struct context *context, 67 struct netlbl_lsm_secattr *secattr); 68 #else 69 static inline void mls_export_netlbl_lvl(struct context *context, 70 struct netlbl_lsm_secattr *secattr) 71 { 72 return; 73 } 74 static inline void mls_import_netlbl_lvl(struct context *context, 75 struct netlbl_lsm_secattr *secattr) 76 { 77 return; 78 } 79 static inline int mls_export_netlbl_cat(struct context *context, 80 struct netlbl_lsm_secattr *secattr) 81 { 82 return -ENOMEM; 83 } 84 static inline int mls_import_netlbl_cat(struct context *context, 85 struct netlbl_lsm_secattr *secattr) 86 { 87 return -ENOMEM; 88 } 89 #endif 90 91 #endif /* _SS_MLS_H */ 92 93