release/src-rt-6.x.4708/linux/linux-2.6.36/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(struct policydb *p,
  34                        char oldc,
  35                        char **scontext,
  36                        struct context *context,
  37                        struct sidtab *s,
  38                        u32 def_sid);
  39
  40 int mls_from_string(char *str, struct context *context, gfp_t gfp_mask);
  41
  42 int mls_range_set(struct context *context, struct mls_range *range);
  43
  44 int mls_convert_context(struct policydb *oldp,
  45                         struct policydb *newp,
  46                         struct context *context);
  47
  48 int mls_compute_sid(struct context *scontext,
  49                     struct context *tcontext,
  50                     u16 tclass,
  51                     u32 specified,
  52                     struct context *newcontext);
  53
  54 int mls_setup_user_range(struct context *fromcon, struct user_datum *user,
  55                          struct context *usercon);
  56
  57 #ifdef CONFIG_NETLABEL
  58 void mls_export_netlbl_lvl(struct context *context,
  59                            struct netlbl_lsm_secattr *secattr);
  60 void mls_import_netlbl_lvl(struct context *context,
  61                            struct netlbl_lsm_secattr *secattr);
  62 int mls_export_netlbl_cat(struct context *context,
  63                           struct netlbl_lsm_secattr *secattr);
  64 int mls_import_netlbl_cat(struct context *context,
  65                           struct netlbl_lsm_secattr *secattr);
  66 #else
  67 static inline void mls_export_netlbl_lvl(struct context *context,
  68                                          struct netlbl_lsm_secattr *secattr)
  69 {
  70         return;
  71 }
  72 static inline void mls_import_netlbl_lvl(struct context *context,
  73                                          struct netlbl_lsm_secattr *secattr)
  74 {
  75         return;
  76 }
  77 static inline int mls_export_netlbl_cat(struct context *context,
  78                                         struct netlbl_lsm_secattr *secattr)
  79 {
  80         return -ENOMEM;
  81 }
  82 static inline int mls_import_netlbl_cat(struct context *context,
  83                                         struct netlbl_lsm_secattr *secattr)
  84 {
  85         return -ENOMEM;
  86 }
  87 #endif
  88
  89 #endif  /* _SS_MLS_H */