/******************************************************************************
*
*	shmcat.h: structures related to shared catalog memory
*
*	Module	%M%	Version	%I% 	Date	%H%
*
*	(c) Copyright 1998 Ardent Software Inc. - All Rights Reserved
*	This is unpublished proprietary source code of Ardent Software Inc.
*	The copyright notice above does not evidence any actual or intended
*	publication of such source code.
*
*******************************************************************************
*
*	Maintenence log - insert most recent change descriptions at top
*
*	Date.... GTAR# WHO Description.........................................
*	10/14/98 23801 SAP Change copyrights. 
*	04/03/95 16273 AGM Rename S_OK to avoid conflict on Windows-NT
*	11/13/90 7728  MAA Increased MAX_CAT to 4096
*	02/14/89 5749  DTW add Voc_fd
*	11/27/88   -    -  New file
*
******************************************************************************/

#define MAX_IDLEN 256		
#define EXTRA_DIR 4
#define MAX_CAT 4096

/*
 *  Header for shared catalog space
 */
#define SHCATHDR 	struct shcathdr
struct shcathdr 
{
	int	state;		/* current state of shared memory */
	int 	progcnt;		/* current number of programs loaded */
	int 	dir,		/* offset to array of directory entries */
		nameblk,		/* offset to block containing unix pathnames */
		codeblk,		/* offset to block containing basic code */
		shcatend;		/* offset to last byte in shared memory */
};

/*  values for shcathdr state variable */
#define S_DETACHED	0x1		/*  segment has been detached */
#define S_LOADING	0x2		/*  segment is new and being loaded */
#define S_MODIFIED	0x3		/*  segment is being modified */
#define S_OK_FOR_USE	0x4		/*  segment is okay for use */

/*  command values for modify_shm */
#define S_DELETE	0x1		/*  delete a program */
#define S_ADD		0x2		/*  add a new program */
#define S_UPDATE 	0x3		/*  replace a program with a new copy */
#define S_DESTROY	0x4		/*  remove the entire shared memory segment */


/*
 * directory entry for programs stored in shared memory
 */
#define DIR_ENTRY struct dir_entry
struct dir_entry
{
	int pathname;		/* offset to unix pathname */
	int size;		/* size of program shared memory*/
	int code;		/* offset to program structure */
	int	totref,		/* count of all references */
		curref;		/* current number of users */
};

extern char *Unix_name[];		/* full unix pathnames */
extern char *Recstr[];			/*  record name */
extern char *Filestr[];			/* pathname for directory (account & file) */
extern SHCATHDR *Hdrblk;
extern DBFILE 	*Voc_fd; 			/*  VOC file ptr */