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/** BEGIN COPYRIGHT BLOCK
* This Program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; version 2 of the License.
*
* This Program 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 GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this Program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA.
*
* In addition, as a special exception, Red Hat, Inc. gives You the additional
* right to link the code of this Program with code not covered under the GNU
* General Public License ("Non-GPL Code") and to distribute linked combinations
* including the two, subject to the limitations in this paragraph. Non-GPL Code
* permitted under this exception must only link to the code of this Program
* through those well defined interfaces identified in the file named EXCEPTION
* found in the source code files (the "Approved Interfaces"). The files of
* Non-GPL Code may instantiate templates or use macros or inline functions from
* the Approved Interfaces without causing the resulting work to be covered by
* the GNU General Public License. Only Red Hat, Inc. may make changes or
* additions to the list of Approved Interfaces. You must obey the GNU General
* Public License in all respects for all of the Program code and other code used
* in conjunction with the Program except the Non-GPL Code covered by this
* exception. If you modify this file, you may extend this exception to your
* version of the file, but you are not obligated to do so. If you do not wish to
* provide this exception without modification, you must delete this exception
* statement from your version and license this file solely under the GPL without
* exception.
*
*
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifndef __usi_h
#define __usi_h
/*
* Description (usi.h)
*
* This file defines the interface to an unsigned integer datatype.
* Unsigned integers are used to represent object identifiers of
* various sorts, including user ids and group ids. Functions
* for manipulating lists of USIs are also provided in this
* interface.
*/
/* Define a type to contain an unsigned integer value */
typedef unsigned int USI_t;
/* Define a type to describe a list of USI_t values */
typedef struct USIList_s USIList_t;
struct USIList_s {
int uil_count; /* number of active values in list */
int uil_size; /* current size of list area in USI_t */
USI_t * uil_list; /* pointer to array of values */
};
/* Define macro to initialize a USIList_t structure */
#define UILINIT(uilptr) \
{ \
(uilptr)->uil_count = 0; \
(uilptr)->uil_size = 0; \
(uilptr)->uil_list = 0; \
}
/* Define a macro to replace the contents of one USIList_t with another's */
#define UILREPLACE(dst, src) \
{ \
if ((dst)->uil_size > 0) { \
FREE((dst)->uil_list); \
} \
(dst)->uil_count = (src)->uil_count; \
(dst)->uil_size = (src)->uil_size; \
(dst)->uil_list = (src)->uil_list; \
(src)->uil_count = 0; \
(src)->uil_size = 0; \
(src)->uil_list = 0; \
}
/* Define a variation of UILINIT() that frees any allocated space */
#define UILFREE(uilptr) \
{ \
if ((uilptr)->uil_size > 0) { \
FREE((uilptr)->uil_list); \
} \
(uilptr)->uil_count = 0; \
(uilptr)->uil_size = 0; \
(uilptr)->uil_list = 0; \
}
/* Define a macro to extract the current number of items in a USIList_t */
#define UILCOUNT(uilptr) ((uilptr)->uil_count)
/* Define a macro to return a pointer to the array of values */
#define UILLIST(uilptr) ((uilptr)->uil_list)
NSPR_BEGIN_EXTERN_C
/* Define functions in usi.c */
extern USI_t * usiAlloc(USIList_t * uilptr, int count);
extern int usiInsert(USIList_t * uilptr, USI_t usi);
extern int usiPresent(USIList_t * uilptr, USI_t usi);
extern int usiRemove(USIList_t * uilptr, USI_t usi);
extern int uilDuplicate(USIList_t * dstptr, USIList_t * srcptr);
extern int uilMerge(USIList_t * dstptr, USIList_t * srcptr);
NSPR_END_EXTERN_C
#endif /* __usi_h */
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