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@paul-moore.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_range_set(struct context *context, struct mls_range *range);
  43
  44int mls_convert_context(struct policydb *oldp,
  45                        struct policydb *newp,
  46                        struct context *context);
  47
  48int mls_compute_sid(struct context *scontext,
  49                    struct context *tcontext,
  50                    u16 tclass,
  51                    u32 specified,
  52                    struct context *newcontext,
  53                    bool sock);
  54
  55int mls_setup_user_range(struct context *fromcon, struct user_datum *user,
  56                         struct context *usercon);
  57
  58#ifdef CONFIG_NETLABEL
  59void mls_export_netlbl_lvl(struct context *context,
  60                           struct netlbl_lsm_secattr *secattr);
  61void mls_import_netlbl_lvl(struct context *context,
  62                           struct netlbl_lsm_secattr *secattr);
  63int mls_export_netlbl_cat(struct context *context,
  64                          struct netlbl_lsm_secattr *secattr);
  65int mls_import_netlbl_cat(struct context *context,
  66                          struct netlbl_lsm_secattr *secattr);
  67#else
  68static inline void mls_export_netlbl_lvl(struct context *context,
  69                                         struct netlbl_lsm_secattr *secattr)
  70{
  71        return;
  72}
  73static inline void mls_import_netlbl_lvl(struct context *context,
  74                                         struct netlbl_lsm_secattr *secattr)
  75{
  76        return;
  77}
  78static inline int mls_export_netlbl_cat(struct context *context,
  79                                        struct netlbl_lsm_secattr *secattr)
  80{
  81        return -ENOMEM;
  82}
  83static inline int mls_import_netlbl_cat(struct context *context,
  84                                        struct netlbl_lsm_secattr *secattr)
  85{
  86        return -ENOMEM;
  87}
  88#endif
  89
  90#endif  /* _SS_MLS_H */
  91
  92