1 /* Authors: Jason Tang <jtang (at) tresys.com> 2 * Joshua Brindle <jbrindle (at) tresys.com> 3 * Karl MacMillan <kmacmillan (at) tresys.com> 4 * 5 * A set of utility functions that aid policy decision when dealing 6 * with hierarchal items. 7 * 8 * Copyright (C) 2005 Tresys Technology, LLC 9 * 10 * This library is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU Lesser General Public 12 * License as published by the Free Software Foundation; either 13 * version 2.1 of the License, or (at your option) any later version. 14 * 15 * This library is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * Lesser General Public License for more details. 19 * 20 * You should have received a copy of the GNU Lesser General Public 21 * License along with this library; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 23 */ 24 25 #ifndef _SEPOL_POLICYDB_EXPAND_H 26 #define _SEPOL_POLICYDB_EXPAND_H 27 28 #include <stddef.h> 29 #include <sepol/handle.h> 30 #include <sepol/policydb/conditional.h> 31 #include <sys/cdefs.h> 32 33 __BEGIN_DECLS 34 35 /* 36 * Expand only the avrules for a module. It is valid for this function 37 * to expand base into itself (i.e. base == out); the typemap for 38 * this special case should map type[i] to i+1. Likewise the boolmap 39 * should map bool[i] to i + 1. This function optionally expands 40 * neverallow rules. If neverallow rules are expanded, there is no 41 * need to copy them and doing so could cause duplicate entries when 42 * base == out. If the neverallow rules are not expanded, they are 43 * just copied to the destination policy so that assertion checking 44 * can be performed after expand. No assertion or hierarchy checking 45 * is performed by this function. 46 */ 47 extern int expand_module_avrules(sepol_handle_t * handle, policydb_t * base, 48 policydb_t * out, uint32_t * typemap, uint32_t * boolmap, 49 uint32_t * rolemap, uint32_t * usermap, 50 int verbose, int expand_neverallow); 51 /* 52 * Expand all parts of a module. Neverallow rules are not expanded (only 53 * copied). It is not valid to expand base into itself. If check is non-zero, 54 * performs hierarchy and assertion checking. 55 */ 56 extern int expand_module(sepol_handle_t * handle, 57 policydb_t * base, policydb_t * out, 58 int verbose, int check); 59 extern int convert_type_ebitmap(ebitmap_t * src, ebitmap_t * dst, 60 uint32_t * typemap); 61 extern int expand_convert_type_set(policydb_t * p, uint32_t * typemap, 62 type_set_t * set, ebitmap_t * types, 63 unsigned char alwaysexpand); 64 extern int type_set_expand(type_set_t * set, ebitmap_t * t, policydb_t * p, 65 unsigned char alwaysexpand); 66 extern int role_set_expand(role_set_t * x, ebitmap_t * r, policydb_t * out, policydb_t * base, uint32_t * rolemap); 67 extern int mls_semantic_level_expand(mls_semantic_level_t *sl, mls_level_t *l, 68 policydb_t *p, sepol_handle_t *h); 69 extern int mls_semantic_range_expand(mls_semantic_range_t *sr, mls_range_t *r, 70 policydb_t *p, sepol_handle_t *h); 71 extern int expand_rule(sepol_handle_t * handle, 72 policydb_t * source_pol, 73 avrule_t * source_rule, avtab_t * dest_avtab, 74 cond_av_list_t ** cond, cond_av_list_t ** other, 75 int enabled); 76 77 extern int expand_avtab(policydb_t * p, avtab_t * a, avtab_t * expa); 78 79 extern int expand_cond_av_list(policydb_t * p, cond_av_list_t * l, 80 cond_av_list_t ** newl, avtab_t * expa); 81 82 __END_DECLS 83 #endif 84
