LXR linux/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
  27int mls_compute_context_len(struct context *context);
  28void mls_sid_to_context(struct context *context, char **scontext);
  29int mls_context_isvalid(struct policydb *p, struct context *c);
  30int mls_range_isvalid(struct policydb *p, struct mls_range *r);
  31int mls_level_isvalid(struct policydb *p, struct mls_level *l);
  32
  33int 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
  40int mls_from_string(char *str, struct context *context, gfp_t gfp_mask);
  41
  42int mls_convert_context(struct policydb *oldp,
  43                        struct policydb *newp,
  44                        struct context *context);
  45
  46int mls_compute_sid(struct context *scontext,
  47                    struct context *tcontext,
  48                    u16 tclass,
  49                    u32 specified,
  50                    struct context *newcontext);
  51
  52int mls_setup_user_range(struct context *fromcon, struct user_datum *user,
  53                         struct context *usercon);
  54
  55#ifdef CONFIG_NETLABEL
  56void mls_export_netlbl_lvl(struct context *context,
  57                           struct netlbl_lsm_secattr *secattr);
  58void mls_import_netlbl_lvl(struct context *context,
  59                           struct netlbl_lsm_secattr *secattr);
  60int mls_export_netlbl_cat(struct context *context,
  61                          struct netlbl_lsm_secattr *secattr);
  62int mls_import_netlbl_cat(struct context *context,
  63                          struct netlbl_lsm_secattr *secattr);
  64#else
  65static inline void mls_export_netlbl_lvl(struct context *context,
  66                                         struct netlbl_lsm_secattr *secattr)
  67{
  68        return;
  69}
  70static inline void mls_import_netlbl_lvl(struct context *context,
  71                                         struct netlbl_lsm_secattr *secattr)
  72{
  73        return;
  74}
  75static inline int mls_export_netlbl_cat(struct context *context,
  76                                        struct netlbl_lsm_secattr *secattr)
  77{
  78        return -ENOMEM;
  79}
  80static inline int mls_import_netlbl_cat(struct context *context,
  81                                        struct netlbl_lsm_secattr *secattr)
  82{
  83        return -ENOMEM;
  84}
  85#endif
  86
  87#endif  /* _SS_MLS_H */
  88
  89