mirror of https://github.com/postgres/postgres
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9312033071
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/*-------------------------------------------------------------------------
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* |
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* fe-connect.h |
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* |
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* Definitions related to setting up a connection to the backend |
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* |
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* Copyright (c) 1994, Regents of the University of California |
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* |
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* $Id: fe-connect.h,v 1.8 1998/02/26 04:45:02 momjian Exp $ |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef FE_CONNECT_H |
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#define FE_CONNECT_H |
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#include <sys/types.h> |
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#include "libpq-fe.h" |
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/*----------------------------------------------------------------
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* Common routines and definitions |
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*---------------------------------------------------------------- |
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*/ |
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int packetSend(PGconn *conn, const char *buf, size_t len); |
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#endif /* FE_CONNECT_H */ |
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/*-------------------------------------------------------------------------
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* |
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* libpq-int.h-- |
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* This file contains internal definitions meant to be used only by |
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* the frontend libpq library, not by applications that call it. |
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* |
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* Copyright (c) 1994, Regents of the University of California |
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* |
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* $Id: libpq-int.h,v 1.1 1998/08/17 03:52:36 scrappy Exp $ |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef LIBPQ_INT_H |
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#define LIBPQ_INT_H |
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/* We assume libpq-fe.h has already been included. */ |
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/* ----------------
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* include stuff common to fe and be |
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* ---------------- |
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*/ |
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#include "libpq/pqcomm.h" |
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/* libpq supports this version of the frontend/backend protocol.
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* |
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* NB: we used to use PG_PROTOCOL_LATEST from the backend pqcomm.h file, |
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* but that's not really the right thing: just recompiling libpq |
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* against a more recent backend isn't going to magically update it |
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* for most sorts of protocol changes. So, when you change libpq |
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* to support a different protocol revision, you have to change this |
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* constant too. PG_PROTOCOL_EARLIEST and PG_PROTOCOL_LATEST in |
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* pqcomm.h describe what the backend knows, not what libpq knows. |
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*/ |
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#define PG_PROTOCOL_LIBPQ PG_PROTOCOL(2,0) |
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/* ----------------
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* Internal functions of libpq |
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* Functions declared here need to be visible across files of libpq, |
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* but are not intended to be called by applications. We use the |
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* convention "pqXXX" for internal functions, vs. the "PQxxx" names |
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* used for application-visible routines. |
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* ---------------- |
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*/ |
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/* === in fe-connect.c === */ |
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extern int pqPacketSend(PGconn *conn, const char *buf, size_t len); |
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/* === in fe-exec.c === */ |
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extern void pqClearAsyncResult(PGconn *conn); |
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/* === in fe-misc.c === */ |
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/* "Get" and "Put" routines return 0 if successful, EOF if not.
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* Note that for Get, EOF merely means the buffer is exhausted, |
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* not that there is necessarily any error. |
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*/ |
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extern int pqGetc(char *result, PGconn *conn); |
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extern int pqGets(char *s, int maxlen, PGconn *conn); |
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extern int pqPuts(const char *s, PGconn *conn); |
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extern int pqGetnchar(char *s, int len, PGconn *conn); |
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extern int pqPutnchar(const char *s, int len, PGconn *conn); |
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extern int pqGetInt(int *result, int bytes, PGconn *conn); |
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extern int pqPutInt(int value, int bytes, PGconn *conn); |
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extern int pqReadData(PGconn *conn); |
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extern int pqFlush(PGconn *conn); |
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extern int pqWait(int forRead, int forWrite, PGconn *conn); |
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/* max length of message to send */ |
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#define MAX_MESSAGE_LEN 8193 |
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/* maximum number of fields in a tuple */ |
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#define MAX_FIELDS 512 |
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/* bits in a byte */ |
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#define BYTELEN 8 |
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/* fall back options if they are not specified by arguments or defined
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by environment variables */ |
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#define DefaultHost "localhost" |
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#define DefaultTty "" |
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#define DefaultOption "" |
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#define DefaultAuthtype "" |
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#define DefaultPassword "" |
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/* supply an implementation of strerror() macro if system doesn't have it */ |
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#ifndef strerror |
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#if defined(sun) && defined(sparc) && !defined(__SVR4) |
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extern char *sys_errlist[]; |
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#define strerror(A) (sys_errlist[(A)]) |
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#endif /* sunos4 */ |
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#endif /* !strerror */ |
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#endif /* LIBPQ_INT_H */ |
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