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      1 /*
      2  * Copyright 2011 Tresys Technology, LLC. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are met:
      6  *
      7  *    1. Redistributions of source code must retain the above copyright notice,
      8  *       this list of conditions and the following disclaimer.
      9  *
     10  *    2. Redistributions in binary form must reproduce the above copyright notice,
     11  *       this list of conditions and the following disclaimer in the documentation
     12  *       and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY TRESYS TECHNOLOGY, LLC ``AS IS'' AND ANY EXPRESS
     15  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     16  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     17  * EVENT SHALL TRESYS TECHNOLOGY, LLC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     18  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     19  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     21  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     22  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     23  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  *
     25  * The views and conclusions contained in the software and documentation are those
     26  * of the authors and should not be interpreted as representing official policies,
     27  * either expressed or implied, of Tresys Technology, LLC.
     28  */
     29 
     30 #ifndef __CIL_SYMTAB_H_
     31 #define __CIL_SYMTAB_H_
     32 
     33 #include <sepol/policydb/symtab.h>
     34 #include <sepol/policydb/hashtab.h>
     35 
     36 #include "cil_tree.h"
     37 
     38 struct cil_symtab_datum {
     39 	struct cil_list *nodes;
     40 	char *name;
     41 	char *fqn;
     42 	symtab_t *symtab;
     43 };
     44 
     45 #define DATUM(d) ((struct cil_symtab_datum *)(d))
     46 #define NODE(n) ((struct cil_tree_node *)(DATUM(n)->nodes->head->data))
     47 #define FLAVOR(f) (NODE(f)->flavor)
     48 
     49 struct cil_complex_symtab_key {
     50 	intptr_t key1;
     51 	intptr_t key2;
     52 	intptr_t key3;
     53 	intptr_t key4;
     54 };
     55 
     56 struct cil_complex_symtab_datum {
     57 	void *data;
     58 };
     59 
     60 struct cil_complex_symtab_node {
     61 	struct cil_complex_symtab_key *ckey;
     62 	struct cil_complex_symtab_datum *datum;
     63 	struct cil_complex_symtab_node *next;
     64 };
     65 
     66 struct cil_complex_symtab {
     67 	struct cil_complex_symtab_node **htable;
     68 	uint32_t nelems;
     69 	uint32_t nslots;
     70 	uint32_t mask;
     71 };
     72 
     73 void cil_symtab_init(symtab_t *symtab, unsigned int size);
     74 void cil_symtab_datum_init(struct cil_symtab_datum *datum);
     75 void cil_symtab_datum_destroy(struct cil_symtab_datum *datum);
     76 void cil_symtab_datum_remove_node(struct cil_symtab_datum *datum, struct cil_tree_node *node);
     77 int cil_symtab_insert(symtab_t *symtab, hashtab_key_t key, struct cil_symtab_datum *datum, struct cil_tree_node *node);
     78 void cil_symtab_remove_datum(struct cil_symtab_datum *datum);
     79 int cil_symtab_get_datum(symtab_t *symtab, char *key, struct cil_symtab_datum **datum);
     80 int cil_symtab_map(symtab_t *symtab,
     81 				   int (*apply) (hashtab_key_t k, hashtab_datum_t d, void *args),
     82 				   void *args);
     83 void cil_symtab_destroy(symtab_t *symtab);
     84 void cil_complex_symtab_init(struct cil_complex_symtab *symtab, unsigned int size);
     85 int cil_complex_symtab_insert(struct cil_complex_symtab *symtab, struct cil_complex_symtab_key *ckey, struct cil_complex_symtab_datum *datum);
     86 void cil_complex_symtab_search(struct cil_complex_symtab *symtab, struct cil_complex_symtab_key *ckey, struct cil_complex_symtab_datum **out);
     87 void cil_complex_symtab_destroy(struct cil_complex_symtab *symtab);
     88 
     89 #endif
     90