security/selinux/ss/mls.h

   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