#ifndef	h_disk
#define	h_disk
/******************************************************************************
*
*	Declarations for UniVerse Database disk i/o functions
*
*	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*	This is unpublished proprietary source code of Ardent Software Inc.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 intented
*	publication of such source code.
*
*******************************************************************************
*
*	Maintenence log - insert most recent change descriptions at top
*
*	Date.... GTAR# WHO Description.........................................
*	04/12/99 24729 LPC Add addr_support flag to T30infonew structure.
*	03/27/99 24729 RGA Create new T30TABNEW struct with T30infonew.
*	03/18/99 24480 RGA Change Ihead64 to reflect new size.
*	02/01/99 24414 LPC Ihead changed to support 32-bit and 64-bit files.
*	12/14/98 23910 DTM Correct GET_NUM_UV_USERS to initialize value.
*	10/14/98 23801 SAP Change copyrights. 
*	10/08/98 23765 CSM remove package count array from license table
*	10/02/98 23765 CSM Add license structure to disk SM segment
*	05/20/98 21718 LPC/WSM Add support for file suspension
*	05/20/98 22647 LPC Move filehdr.h to bottom of list of include files
*	05/12/98 22647 LPC Moved file header masks and offsets to filehdr.h
*	04/16/98 22807 CSM New DBscan mode to release latch held by the scan
*	12/19/97 22373 CSM New DBscanhash mode and return val for select-update
*	09/16/97 19940 GMH Mark featr5 as in use
*	05/29/97 20606 LAG Added UDRcontrol to DBsegment definition. Added
*				UDRflags and UDRunique for replication
*	04/25/97 20510 AGM Add performance counters to DBsegment
*	04/03/97 20380 DTM Bump up file rev for NLSsortmap/NLSsortcksum
*	09/10/96 19161 CSM Bump up file rev for freechain freeflag check
*	06/13/96 18582 CSM Bump up sica rev for Cascades
*	05/30/96 18321 MGM Added Idx_multpart for SQL index type 25 files.
*	05/22/96 18423 GMM Added inclusion of iflags.h
*	05/20/96 18403 DTM Added information for deadlock detection
*	05/12/96 18403 DTM Added information for deadlock/latch daemon
*	03/11/96 18125 GMH Add bit tags for idxoff word
*	01/19/96 17832 HSB Added SQLidxmap for SQL index type 25 files.
*	08/23/95 17242 AGM Replace COMPUTER==WINNT test by MSWIN test
*       05/26/95 15077 GMM Used up two spare slots from DBsegment
*	06/01/95 16615 PVW Move lock related defines into LOCK.h
*	05/26/95 16490 FRA Port to SGI (cleanup warnings)
*	05/26/95 16538 DTM Made DBlk_copy/DBlk_init macros
*	04/18/95 16490 FRA Port to SGI
*	04/18/95 16489 FRA Port to IBM
*	04/10/95 16244 GMM Changed ino_t to uv_ino_t
*	04/11/95 15958 PVW Change LOCK_WAIT,NOWAIT and add LOCK_DEMOTE
*	03/31/95 16221 AGM Rename LOG.h again!
*	03/30/95 14633 DTM Added macros for semset/semclr operations
*	03/03/95 15757 FRA Remove EXTERN DBSHMSZ and fix FCNTRL_H include
*	02/27/95 16051 AGM Revert clog.h to LOG.h
*	11/08/94 15741 EAP Added NLSmapcsum & NLSmapname header offsets
*	12/05/94 15335 FRA Port to R60000 add SMP file locking
*	12/01/94 15406 PVW Remove references to debug[rgf]lock
*	11/16/94 15328 PVW Implement exclusive group latches
*	11/17/94 15078 SJM Change include of LOG.h to clog.h
*	10/21/94 15166 GMM Added USE_SELECT type 3 for NT, ifdefed out sem decs
*	10/26/94 14073 TMC change comments reserving featr3 and featr4
*	10/25/94 15040 PVW Add DBlatch structure
*	10/06/94 15067 PVW Change definition of Pend_table elements
*	08/24/94 14762 CSM Remove old logging system variables, replace staletbl
*	08/22/94 14718 RM  Added ISOWRITE latches which block on RU locks
*	08/17/94 14623 PVW Add additional LOCKFAIL_ERRORS
*	08/12/94 14656 JWT Increase readu entries to 64 bytes
*	08/10/94 14623 RM  Add DBlock_error
*	08/05/94 14606 PVW Change file,group,record lock structures
*	08/04/94 14519 PVW Implement group shared latch
*	08/04/94 14582 PVW Change type argument in DBrsemv() call
*	07/26/94 13897 SHK Port to RS6000
*	07/21/94 13286 DTM Modified DBFLOGV to avoid conflicts with uvbackup/restore
*	07/06/94 14371 RM  Added MAXRLOCK
*	07/01/94 14362 RM  Added LOCK_ANYRL
*	06/30/94 14312 PVW Changed DBrsemp() interface
*	06/28/94 14239 WLG Added comments for the DB*MASK constants
*	06/24/94 13837 PVW Correct define for LIST_DEADLOCK
*	06/07/94 14173 CSM Add lsn,chkpoint,tlnum,inconsistent flag to hdr/desc
*	05/26/94 13836 PVW Add defines for DBrecordlocked()
*	05/25/94 13837 PVW Implement Release 8 Lock Manager changes
*	05/09/94 13837 PVW Add defines for other filelock types
*	03/28/94 13179 JKW Initialize R8 Logging
*	04/01/94 12303 WLG Fix DBFMASK to be same as highest rev stamp.
*	03/15/94 12303 ALC Bumped file rev for PI/open converted files
*	03/15/94 12406 GMM Put in change to allow multi uniVerses
*	03/01/94 13167 JWT Integrate Pyramid O_SYNC change
*	01/06/94 12807 CSM Add a sica Revision constant DBFSICA
*	09/15/93 10922 FAI Changed inode to type ino_t.
*	09/10/93 12230 RM  Bumped file revision level for item padding
*	08/02/93 10978 SHK Port to DEC AXP
*	07/31/93 11923 LPC Add defines for Distributed Files
*	07/22/93 11853 RM  Added DBscan defines
*	03/09/93 11180 DPB Move UVschema to 524
*	12/14/92 10716 LPC Add Partblock offset to file header
*	09/28/92 10291 GMH Moved location of Bakoffset
*	08/11/92 8806  JKW add log variables
*	08/05/92 9956  RM  Newstyle item padding changes
*	07/29/92 6818  GMH Add bak locations.
*	06/30/92 8806  JKW Add tx counter
*	03/26/92 9341  RM  Add read only files
*	03/23/92 8802  JKW Add readl functionality
*	03/18/92 8989  LPC New file revision level for improved dynamic files.
*	03/17/92 9296  DPB added support for SQL SICAs.
*	11/15/91 8348  JWT detect resize operational error
*	11/14/91 8907  TMC use poll for microsec sleep (USE_SELECT==2)
*	06/17/91 8485  JWT fix syntax error
*	05/22/91 8376  JWT new authorization
*	04/10/91 8220  KIS Change semaphore count to continue from 0s base.
*	04/09/91 8214  FAI Add signature_table[] for LONG_pid.
*	01/10/91 7868  TMC Allow network debugging to be turned on and off
*	09/25/90 4944  TMC Change semaphore number to be same as shared memory
*	08/29/90 7025  KIS Changed names of featrx vars & add TLOGSEM semaphore
*	08/28/90 7025  KIS Reserve featr4 for logging, if I/Os allowed
*	08/14/90 7025  KIS Reserve featr3 for logging roll forward active
*	07/19/90 7025  KIS Reserve featr2 for logging active
*	05/04/90 5192  JWT New pstat interface
*	04/17/90 7025  KIS Add for transaction logger magic#
*	04/10/90 7010  JWT Critical error handling improvments
*	03/29/90 6972  JWT new semset logic
*	01/04/89 6758  JWT HP ASM_sem support
*	09/28/89 6342  JWT Lessen file descriptor overhead
*	09/27/89 6318  JWT fix large record handling
*	08/24/89 6072  JWT tunable disk locking
*	04/12/89 5927  TJR alignment for seqioua
*	03/03/89 5751  JWT Implement onsite  tunable parameters
*	12/05/88 5590  DTW add flag for catalog shared memory
*	11/28/88 5208  JWT Multi-thread READU
*	10/05/88 5234  TJR user configurable wide zero
*	07/25/88   -    -  Maintenence log purged at 5.2.1, see release 5.1.10.
*
*****************************************************************************/
#include	"iflags.h"
#include	FCNTL_H
#include	"MFILE.h"
#include	"DBFILE.h"
#include	"PFILE.h"
#include	"plock.h"
#include	"btree.h"
#include	"tunables.h"
#include	"portstat.h"
#include	"c_LOG.h"
#include	"LOCK.h"
#include	"perfdata.h"
#include	"UDR_include.h"

/******************************************************************************
*
*	NOTE: filehdr.h MUST be the last header file included in the list.
*
*****************************************************************************/
#include	"filehdr.h"

/******************************************************************************
*
*	NOTE: All file header information (offsets, masks and macros) have
*	been moved to filehdr.h, which is included from this file.
*
*****************************************************************************/

#ifdef MSWIN
/*
 * do nothing for SYNC_ON. For SYNC_OFF decrement the fdesc sync flag
 * as this is usually called in a loop involving the sync flag
 */
#define F_SYNC_ON(mf) \
 	{ \
	}
#define F_SYNC_OFF(mf) \
	if (((MFILE*)mf)->sync_on) \
        { \
        	((MFILE*)mf)->sync_on -= 1; \
        }

#else
#define	F_SYNC_ON(mf)	\
	if (DBshmseg->tune_vals.syncalloc)\
	{	if(((MFILE*)mf)->sync_on == 0)\
		{	((MFILE*)mf)->EBWSsave = fcntl(((MFILE*)mf)->fp,\
								F_GETFL, 0);\
			(void) fcntl(((MFILE*)mf)->fp, F_SETFL,\
				((MFILE*)mf)->EBWSsave | O_SYNC);\
		}\
		((MFILE*)mf)->sync_on++;\
	}

#define	F_SYNC_OFF(mf)	\
	if (((MFILE*)mf)->sync_on && --((MFILE*)mf)->sync_on <= 0)\
	{	(void) fcntl(((MFILE*)mf)->fp, F_SETFL,\
				((MFILE*)mf)->EBWSsave & ~O_SYNC);\
	}

#endif


#if defined(UV_MULTI_INSTALL)
extern int p_home_inode();
#endif

/* opcodes for DBscan */
#define	SCANinit	1
#define	SCANread	0
#define	SCANterm	-1
#define SCANrestart	-2
#define SCANgrpsync	-5
#define SCANrellatch	-6

/* return values for DBscanhash */
#define	SCANatgrpend	-8

#define	Sector	DISKBLK		/* Physical disk sector size */
#define	_ALIGN	W_ALIGN		/* Word alignment mask (Boundary-1)*/
#define	absaddr	0		/* Specifies seek relative to base of file */
#define	filend	2		/* specifies seek relative to end of file */
#define	HASHES	19

#define	_SHMrev	UVREV
#if defined(UV_MULTI_INSTALL)
#define _SHMKEY	(0xacec0000 | (p_home_inode()))
#else
#define _SHMKEY	(0xacec0000 | (_SHMrev))
#endif

#if defined(UV_MULTI_INSTALL)
#define _DUMBKEY	(0xace01234 | (p_home_inode()))
#else
#define _DUMBKEY	0xace01234
#endif

#define	_USMFKEY _SHMKEY /* file lock semaphore unique key */

struct	t30table
	{	int	dev;
		uv_ino_t inode;
		int	refs;
		struct T30info filedata;
	};

#define T30TAB		struct t30table

struct	t30tablenew
	{	int	dev;
		uv_ino_t inode;
		int	refs;
		int	addr_support;
		T30INFONEW filedata;
	};

#define T30TABNEW	struct t30tablenew

#define JAVACLT		0x1

#define	MAXCONNPERUSR	10
struct	pidpkg
	{	pid_t		srvpid;		/* pid of srvr handling conn */
		unsigned int	packages;	/* packages in use */
	};

#define PIDPKG		struct pidpkg

struct	uvseat
	{	BITMAP	spares:(8*sizeof(BITMAP)-5),	/* Flags */
			conninuse:4,		/* connectons in use for seat */
			objcrtdst:1;		/* seat created by Obj server */
		char	macaddr[13];		/* MacAddress of PC */
		char	devname[25];		/* device name on LAN */
		char	devsubkey[25];		/* device sub-key for N-tier */
		u_long	ipaddr;			/* IP address */
		int	pkgsused;		/* bitmap of packages used */
	};

#define	UVSEAT		struct uvseat

#define GET_NUM_UV_USERS(result) \
	{ \
		int	nseat; \
		UVSEAT	*lictbl; \
		/* make sure we start at 0 */	\
		result = 0;\
		lictbl = (UVSEAT*)((char*)DBshmseg + (int)DBshmseg->lic_table);\
		for (nseat=0; nseat < DBshmseg->tune_vals.max_logins; nseat++) \
			result += lictbl[nseat].conninuse; \
	}

#define	_UVXDT	12
#define	_UVCDT	12
#define	_UVRSZ	128
#define	_PTRBUF	128

struct	DBsegment
	{	/* These items are used to control access to universe	*/
		/* at startup time					*/

		int	logcur;			/* current login count	*/
		int	logpk[MAX_PACKAGES];	/* # active users of each pkg */
#if COMPUTER == SEQUOIA
	char	fill[ 128 - (((MAX_PACKAGES+1)*sizeof(int)) % 128)];
#endif

		/* Next are some global parameters for universe jobs	*/

		UVTUNE	tune_vals;		/* universe tunables	*/
		char	*psegaddr;		/* base addr for Pseg	*/
		char	uvhome[_UVRSZ];		/* home directory of uv	*/

#if COMPUTER == SEQUOIA
	char	fill1[128 - (sizeof(UVTUNE) + sizeof(char*) +
					(_UVRSZ * sizeof(char))) %128];
#endif
		Pblock	Gprtblk;		/* Global pblk template	*/
		char	Gpbuf[_PTRBUF];		/* Work area for above	*/

#if COMPUTER == SEQUOIA
	char	fill2[128 - (sizeof(Pblock) + (_PTRBUF * sizeof(char))) % 128];
#endif
		struct LG_data LGcontrol;
		struct UDR_data	UDRcontrol;
		int	shm;		/*  true if using shared catalog */
		int 	txid;		/*  unique tx id counter         */
		int	nt_svc_pid;	/*  pid of the NT UV service     */
		int	nt_svc_thread;  /*  NT service remote thread routine*/
		int	uvdlockd_pid;	/* pid of the deadlock daemon	 */
		int	spare7,		/*  Reserved for future use...   */
			spare8,		/*  Reserved for future use...   */
			spare9,		/*  Reserved for future use...   */
			spare10,	/*  Reserved for future use...   */
			spare11,	/*  Reserved for future use...   */
			spare12,	/*  Reserved for future use...   */
			spare13,	/*  Reserved for future use...   */
			spare14,	/*  Reserved for future use...   */
			featr1,		/*  Semaphore debugging feature  */
			featr2,		/*  uvnetd debugging feature     */
			featr3,		/*  uvnetlicd debugging feature  */
			featr4,		/*  uvnetlicd watchdog feature   */
			featr5,		/*  rpc debugging feature        */
			featr6,		/*  File suspension toggle       */
			featr7,		/*  Reserved for future use...   */
			featr8,		/*  Reserved for future use...   */
			featr9,		/*  Reserved for future use...   */
			featr10,	/*  Reserved for future use...   */
			featr11,	/*  Reserved for future use...   */
			featr12,	/*  Reserved for future use...   */
			featr13,	/*  Reserved for future use...   */
			featr14,	/*  Reserved for future use...   */
			featr15,	/*  Reserved for future use...   */
			featr16;	/*  Reserved for future use...   */

#if COMPUTER == SEQUOIA
	char	fill3[128 - (34 * sizeof(int)) % 128];
#endif

		struct	Pstat	pstatbuf;

#if COMPUTER == SEQUOIA
	char	fill3[128 - sizeof(struct Pstat) % 128];
#endif

#ifdef	LONG_pid
	long	signature_table[SIG_TAB_SIZ];	/* Table for hashed signatures*/
#endif
		/* sems is a pointer to an array of ints used for test    */
		/* and set assembly code semaphores.  They are allocated  */
		/* with single statement to stress the fact that they     */
		/* must be contiguously allocated.  The number semaphores */
		/* is a tunable parameter.  The first PSEMNUM of these    */
		/* are used for controlling access to the system filelock */
		/* table.  The next GSEMNUM are used to control access to */
		/* the group and readu lock tables.  The next PSEMNUM are */
		/* for the BASIC user process locks.  Three extra         */
		/* semaphores are allocated.  The first is used for login */
		/* limiting.  The second is for the external Pstat process*/
		/* feature.  The third is for type 30 file support	  */
		/* The fourth is for transaction loggint support.         */

		DBSEM	*sems;

		/* Next is a data area use for the BASIC process locks	*/

		short	*usrldat;

		/* The remainer is made up of structures used for disk	*/
		/* I/O concurrency control.				*/

		SGPLCK		*grpslot;		/* group lock tables	*/
		SFLLCK		*filslot;		/* file lock tables	*/
		FS_OWNERS 	*fsoslot;		/* FS lock owners	*/
		WAITERS	  	*fswaiters;		/* FS lock waiters 	*/
		SRULCK		*rduslot;		/* readu table chunks	*/
		READL_OWNERS *rdlslot;			/* owners of shared locks */
		WAITERS		*rdlwaiters;		/* RU lock waiters	*/
		char 		*LG_data_buffer;	/* buffer for log messages  */
		char 		*UDR_data_buffer;	/* buffer for data replication messages  */
		UVSEAT		*lic_table;		/* licenses */
		PIDPKG		*pidpkglst;		/* pid, package list */
		pid_t		*uvnetd_pids;		/* uvnetd pids */
		T30TABNEW		*t30data;		/* type 30 FCBs		*/

#ifdef	UV_PERFORMANCE_DATA
		PERF_DATA	perfdata;	/* Performance data	*/
#endif
	};
/* Old Ihead define */
/* #define	Ihead	(sizeof(DBDADDR)+sizeof(DBDADDR)+sizeof(DBFLAGW)) */

/* New Ihead definitions                                                */
/* Ihead32 - Record block size for a UniVerse 32-bit file:              */
/*           4 byte forward link, 4 byte backward link, 4 byte flagword */
/* Ihead64 - Record block size for a UniVerse 64-bit file:              */
/*           8 byte forward link, 8 byte backward link, 4 byte flagword,*/
/*	     4 byte pads (alignment)					*/
#define	Ihead32	12
#define	Ihead64	24

#define	keymrk	(uchar) CHR_377
#define	DBilen(x) (*((int *) (x-sizeof(DBFLAGW)))^blink)
#endif	/* end of disk.h */