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3592ebea1a
When the rolemap and pointer to the base module are available, if a non-zero bit in role_set_t.roles is a role attribute, expand it before remap. Note, during module compile the rolemap may not be available, the potential duplicates of a regular role and the role attribute that the regular role belongs to could be properly handled by copy_role_allow() and copy_role_trans() during module expansion. Take advantage of the role_val_to_struct[] of the base module, since when role_set_expand() is invoked, the role_val_to_struct[] of the out module may have not been established yet. Also cleanup the error handling of role_set_expand(). Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Signed-off-by: Steve Lawrence <slawrence@tresys.com>
80 lines
3.5 KiB
C
80 lines
3.5 KiB
C
/* Authors: Jason Tang <jtang@tresys.com>
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* Joshua Brindle <jbrindle@tresys.com>
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* Karl MacMillan <kmacmillan@tresys.com>
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*
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* A set of utility functions that aid policy decision when dealing
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* with hierarchal items.
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*
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* Copyright (C) 2005 Tresys Technology, LLC
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _SEPOL_POLICYDB_EXPAND_H
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#define _SEPOL_POLICYDB_EXPAND_H
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#include <stddef.h>
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#include <sepol/handle.h>
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#include <sepol/policydb/conditional.h>
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/*
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* Expand only the avrules for a module. It is valid for this function
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* to expand base into itself (i.e. base == out); the typemap for
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* this special case should map type[i] to i+1. Likewise the boolmap
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* should map bool[i] to i + 1. This function optionally expands
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* neverallow rules. If neverallow rules are expanded, there is no
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* need to copy them and doing so could cause duplicate entries when
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* base == out. If the neverallow rules are not expanded, they are
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* just copied to the destination policy so that assertion checking
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* can be performed after expand. No assertion or hierarchy checking
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* is performed by this function.
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*/
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extern int expand_module_avrules(sepol_handle_t * handle, policydb_t * base,
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policydb_t * out, uint32_t * typemap, uint32_t * boolmap,
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uint32_t * rolemap, uint32_t * usermap,
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int verbose, int expand_neverallow);
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/*
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* Expand all parts of a module. Neverallow rules are not expanded (only
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* copied). It is not valid to expand base into itself. If check is non-zero,
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* performs hierarchy and assertion checking.
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*/
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extern int expand_module(sepol_handle_t * handle,
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policydb_t * base, policydb_t * out,
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int verbose, int check);
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extern int convert_type_ebitmap(ebitmap_t * src, ebitmap_t * dst,
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uint32_t * typemap);
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extern int expand_convert_type_set(policydb_t * p, uint32_t * typemap,
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type_set_t * set, ebitmap_t * types,
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unsigned char alwaysexpand);
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extern int type_set_expand(type_set_t * set, ebitmap_t * t, policydb_t * p,
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unsigned char alwaysexpand);
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extern int role_set_expand(role_set_t * x, ebitmap_t * r, policydb_t * out, policydb_t * base, uint32_t * rolemap);
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extern int mls_semantic_level_expand(mls_semantic_level_t *sl, mls_level_t *l,
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policydb_t *p, sepol_handle_t *h);
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extern int mls_semantic_range_expand(mls_semantic_range_t *sr, mls_range_t *r,
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policydb_t *p, sepol_handle_t *h);
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extern int expand_rule(sepol_handle_t * handle,
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policydb_t * source_pol,
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avrule_t * source_rule, avtab_t * dest_avtab,
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cond_av_list_t ** cond, cond_av_list_t ** other,
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int enabled);
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extern int expand_avtab(policydb_t * p, avtab_t * a, avtab_t * expa);
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extern int expand_cond_av_list(policydb_t * p, cond_av_list_t * l,
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cond_av_list_t ** newl, avtab_t * expa);
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#endif
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