File: sidtab.h

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/*
 * Copyright (c) 1999 The University of Utah and the Flux Group.
 * All rights reserved.
 * 
 * Contributed by the Computer Security Research division,
 * INFOSEC Research and Technology Office, NSA.
 * 
 * This file is part of the Flux OSKit.  The OSKit is free software, also known
 * as "open source;" you can redistribute it and/or modify it under the terms
 * of the GNU General Public License (GPL), version 2, as published by the Free
 * Software Foundation (FSF).  To explore alternate licensing terms, contact
 * the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
 * 
 * The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GPL for more details.  You should have
 * received a copy of the GPL along with the OSKit; see the file COPYING.  If
 * not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
 */
/* FLASK */

#ifndef _SIDTAB_H_
#define _SIDTAB_H_

#include "context.h"
#include "hashtab.h"
#include "symtab.h"

typedef security_id_t sid_key_t;


typedef struct 
{
    unsigned int value;		/* child value (internal only) */
    security_id_t sid;		/* child SID */
} child_datum_t;

    
typedef struct {
    ss_context_t context;
    symtab_t children;		/* child name -> child_datum_t */
#define CVTN_NPRIM_INCR 20
    char **child_val_to_name;	/* child value -> child name */
} sid_datum_t;

typedef struct sidtab_node_t *sidtab_ptr_t;

struct sidtab_node_t  
{
	security_id_t key;
	sid_datum_t datum;
	sidtab_ptr_t next;
};

#define SIDTAB_SIZE 23

typedef struct 
{
    sidtab_ptr_t htable[SIDTAB_SIZE];
    unsigned int nel;		/* number of elements */
} sidtab_t;


int sidtab_init(sidtab_t *s);

int sidtab_insert(sidtab_t *h, security_id_t sid, sid_datum_t *d);
int sidtab_remove(sidtab_t *h, security_id_t sid);
sid_datum_t *sidtab_search(sidtab_t *h, security_id_t sid);
int sidtab_map(sidtab_t *h,
		int (*apply)(security_id_t sid,
			     sid_datum_t *d,
			     void *args),
		void *args);
void sidtab_map_remove_on_error(sidtab_t *h,
				int (*apply)(security_id_t sid,
					     sid_datum_t *d,
					     void *args),
				void *args);

int sidtab_context_to_sid(sidtab_t *s, 			/* IN */
			  ss_context_t *context,		/* IN */
			  security_id_t *sid);		/* OUT */

#endif _SIDTAB_H_

/* FLASK */