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207 lines
4.8 KiB
C
207 lines
4.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* postgres.h--
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* definition of (and support for) postgres system types.
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* this file is included by almost every .c in the system
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*
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* Copyright (c) 1995, Regents of the University of California
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*
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* $Id: postgres.h,v 1.3 1996/12/10 07:03:40 bryanh Exp $
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*
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*-------------------------------------------------------------------------
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*/
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/*
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* NOTES
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* this file will eventually contain the definitions for the
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* following (and perhaps other) system types:
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*
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* int2 int4 float4 float8
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* Oid regproc RegProcedure
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* aclitem
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* struct varlena
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* char8 char16 int28 oid8
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* bytea text
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* NameData Name
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* oidint4 oidint2 oidname
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*
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* TABLE OF CONTENTS
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* 1) simple type definitions
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* 2) varlena and array types
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* 3) TransactionId and CommandId
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* 4) genbki macros used by catalog/pg_xxx.h files
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* 5) random SIGNBIT, MAXPGPATH, STATUS macros
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*
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* ----------------------------------------------------------------
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*/
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#ifndef POSTGRES_H
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#define POSTGRES_H
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#include "postgres_ext.h"
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#include "config.h"
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#include "c.h"
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#include "utils/elog.h"
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#include "utils/palloc.h"
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/* ----------------------------------------------------------------
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* Section 1: simple type definitions
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* ----------------------------------------------------------------
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*/
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typedef int16 int2;
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typedef int32 int4;
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typedef float float4;
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typedef double float8;
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typedef int4 aclitem;
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#define InvalidOid 0
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#define OidIsValid(objectId) ((bool) (objectId != InvalidOid))
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/* unfortunately, both regproc and RegProcedure are used */
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typedef Oid regproc;
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typedef Oid RegProcedure;
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/* ptr to func returning (char *) */
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typedef char * ((*func_ptr)());
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#define RegProcedureIsValid(p) OidIsValid(p)
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/* ----------------------------------------------------------------
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* Section 2: variable length and array types
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* ----------------------------------------------------------------
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*/
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/* ----------------
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* struct varlena
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* ----------------
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*/
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struct varlena {
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int32 vl_len;
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char vl_dat[1];
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};
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#define VARSIZE(PTR) (((struct varlena *)(PTR))->vl_len)
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#define VARDATA(PTR) (((struct varlena *)(PTR))->vl_dat)
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#define VARHDRSZ sizeof(int32)
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typedef struct varlena bytea;
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typedef struct varlena text;
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typedef struct char8 {
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char data[8];
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} char8;
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/* ----------------
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* char16
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* ----------------
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*/
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typedef struct char16 {
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char data[16];
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} char16;
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typedef char16 *Char16;
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typedef int2 int28[8];
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typedef Oid oid8[8];
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typedef struct nameData {
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char data[NAMEDATALEN];
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} NameData;
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typedef NameData *Name;
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/* ----------------
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* oidint4
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*
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* this is a new system type used by the file interface.
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* ----------------
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*/
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typedef struct OidInt4Data {
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Oid oi_oid;
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int32 oi_int4;
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} OidInt4Data;
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typedef struct OidInt4Data *OidInt4;
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/* ----------------
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* oidint2
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*
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* this is a new system type used to define indices on two attrs.
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* ----------------
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*/
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typedef struct OidInt2Data {
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Oid oi_oid;
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int16 oi_int2;
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} OidInt2Data;
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typedef struct OidInt2Data *OidInt2;
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/* ----------------
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* oidname
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*
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* this is a new system type used to define indices on two attrs.
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* ----------------
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*/
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typedef struct OidNameData {
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Oid id;
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NameData name;
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} OidNameData;
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typedef struct OidNameData *OidName;
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/* ----------------------------------------------------------------
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* Section 3: TransactionId and CommandId
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* ----------------------------------------------------------------
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*/
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typedef uint32 TransactionId;
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#define InvalidTransactionId 0
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typedef uint16 CommandId;
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#define FirstCommandId 0
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/* ----------------------------------------------------------------
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* Section 4: genbki macros used by the
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* catalog/pg_xxx.h files
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* ----------------------------------------------------------------
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*/
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#define CATALOG(x) \
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typedef struct CppConcat(FormData_,x)
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#define DATA(x) extern int errno
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#define DECLARE_INDEX(x) extern int errno
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#define BUILD_INDICES
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#define BOOTSTRAP
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#define BKI_BEGIN
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#define BKI_END
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/* ----------------------------------------------------------------
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* Section 5: random stuff
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* SIGNBIT, MAXPGPATH, STATUS...
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* ----------------------------------------------------------------
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*/
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/* msb for int/unsigned */
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#define SIGNBIT (0x8000)
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/* msb for char */
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#define CSIGNBIT (1 << 7)
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/* ----------------
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* global variables which should probably go someplace else.
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* ----------------
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*/
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#define MAXPGPATH 128
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#define STATUS_OK (0)
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#define STATUS_ERROR (-1)
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#define STATUS_NOT_FOUND (-2)
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#define STATUS_INVALID (-3)
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#define STATUS_UNCATALOGUED (-4)
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#define STATUS_REPLACED (-5)
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#define STATUS_NOT_DONE (-6)
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#define STATUS_BAD_PACKET (-7)
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#define STATUS_FOUND (1)
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#endif /* POSTGRES_H */
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