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It seems the regression tests don't cover copy in/out at all, so
code that I had assumed was working had not been tested. Naturally, it was broken ... Tom Lane
This commit is contained in:
Bruce Momjian
parent
edbd51395c
commit
1c2d9cb637
@ -21,7 +21,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_dump.c,v 1.70 1998/04/07 22:36:38 momjian Exp $
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* $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_dump.c,v 1.71 1998/05/06 23:53:27 momjian Exp $
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*
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* Modifications - 6/10/96 - dave@bensoft.com - version 1.13.dhb
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*
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@ -230,7 +230,8 @@ dumpClasses_nodumpData(FILE *fout, const char *classname, const bool oids)
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sprintf(query, "COPY %s TO stdout;\n", fmtId(classname));
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}
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res = PQexec(g_conn, query);
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if (!res)
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if (!res ||
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PQresultStatus(res) == PGRES_FATAL_ERROR)
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{
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fprintf(stderr, "SQL query to dump the contents of Table %s "
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"did not execute. Explanation from backend: '%s'.\n"
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@ -12,7 +12,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/interfaces/libpgtcl/Attic/pgtclId.c,v 1.9 1998/05/06 23:51:00 momjian Exp $
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* $Header: /cvsroot/pgsql/src/interfaces/libpgtcl/Attic/pgtclId.c,v 1.10 1998/05/06 23:53:30 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -60,19 +60,21 @@ int PgInputProc(DRIVER_INPUT_PROTO)
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return -1;
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}
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if (connid->res_copyStatus == RES_COPY_FIN) {
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return PgEndCopy(connid, errorCodePtr);
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}
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/* Try to load any newly arrived data */
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errno = 0;
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if (pqReadData(conn) < 0) {
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*errorCodePtr = errno ? errno : EIO;
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return -1;
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*errorCodePtr = errno ? errno : EIO;
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return -1;
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}
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/* Move data from libpq's buffer to tcl's */
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/* Move data from libpq's buffer to Tcl's.
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* We want to accept data only in units of whole lines,
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* not partial lines. This ensures that we can recognize
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* the terminator line "\\.\n". (Otherwise, if it happened
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* to cross a packet/buffer boundary, we might hand the first
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* one or two characters off to Tcl, which we shouldn't.)
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*/
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conn->inCursor = conn->inStart;
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@ -81,19 +83,33 @@ int PgInputProc(DRIVER_INPUT_PROTO)
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pqGetc(&c, conn) == 0) {
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*buf++ = c;
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--avail;
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if (c == '\n' && bufSize-avail >= 3) {
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if ((bufSize-avail == 3 || buf[-4] == '\n') &&
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buf[-3] == '\\' && buf[-2] == '.') {
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avail += 3;
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connid->res_copyStatus = RES_COPY_FIN;
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break;
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if (c == '\n') {
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/* Got a complete line; mark the data removed from libpq */
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conn->inStart = conn->inCursor;
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/* Is it the endmarker line? */
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if (bufSize-avail == 3 && buf[-3] == '\\' && buf[-2] == '.') {
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/* Yes, change state and return 0 */
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return PgEndCopy(connid, errorCodePtr);
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}
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/* No, return the data to Tcl */
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/* fprintf(stderr, "returning %d chars\n", bufSize - avail); */
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return bufSize - avail;
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}
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}
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/* Accept the data permanently */
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conn->inStart = conn->inCursor;
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/* fprintf(stderr, "returning %d chars\n", bufSize - avail); */
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return bufSize - avail;
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/* We don't have a complete line.
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* We'd prefer to leave it in libpq's buffer until the rest arrives,
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* but there is a special case: what if the line is longer than the
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* buffer Tcl is offering us? In that case we'd better hand over
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* a partial line, else we'd get into an infinite loop.
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* Do this in a way that ensures we can't misrecognize a terminator
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* line later: leave last 3 characters in libpq buffer.
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*/
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if (avail == 0 && bufSize > 3) {
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conn->inStart = conn->inCursor - 3;
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return bufSize - 3;
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}
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return 0;
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}
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/*
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@ -116,10 +132,13 @@ int PgOutputProc(DRIVER_OUTPUT_PROTO)
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errno = 0;
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if (pqPutnchar(buf, bufSize, conn)) {
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*errorCodePtr = errno ? errno : EIO;
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return -1;
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*errorCodePtr = errno ? errno : EIO;
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return -1;
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}
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/* This assumes Tcl script will write the terminator line
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* in a single operation; maybe not such a good assumption?
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*/
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if (bufSize >= 3 && strncmp(&buf[bufSize-3], "\\.\n", 3) == 0) {
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(void) pqFlush(conn);
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if (PgEndCopy(connid, errorCodePtr) == -1)
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v 1.50 1998/05/06 23:51:13 momjian Exp $
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* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v 1.51 1998/05/06 23:53:38 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -748,7 +748,8 @@ PQexec(PGconn *conn, const char *query)
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return NULL;
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/* For backwards compatibility, return the last result if there are
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* more than one.
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* more than one. We have to stop if we see copy in/out, however.
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* We will resume parsing when application calls PQendcopy.
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*/
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lastResult = NULL;
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while ((result = PQgetResult(conn)) != NULL)
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@ -756,6 +757,9 @@ PQexec(PGconn *conn, const char *query)
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if (lastResult)
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PQclear(lastResult);
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lastResult = result;
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if (result->resultStatus == PGRES_COPY_IN ||
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result->resultStatus == PGRES_COPY_OUT)
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break;
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}
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return lastResult;
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}
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@ -950,7 +954,7 @@ PQputline(PGconn *conn, const char *s)
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{
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if (conn && conn->sock >= 0)
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{
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(void) pqPuts(s, conn);
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(void) pqPutnchar(s, strlen(s), conn);
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}
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}
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@ -988,7 +992,7 @@ PQendcopy(PGconn *conn)
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result = PQgetResult(conn);
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/* Expecting a successful result */
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if (result->resultStatus == PGRES_COMMAND_OK)
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if (result && result->resultStatus == PGRES_COMMAND_OK)
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{
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PQclear(result);
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return 0;
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@ -24,7 +24,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-misc.c,v 1.11 1998/05/06 23:51:14 momjian Exp $
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* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-misc.c,v 1.12 1998/05/06 23:53:48 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -342,6 +342,15 @@ tryAgain:
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{
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if (errno == EINTR)
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goto tryAgain;
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/* Some systems return EAGAIN/EWOULDBLOCK for no data */
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#ifdef EAGAIN
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if (errno == EAGAIN)
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return 0;
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#endif
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#if defined(EWOULDBLOCK) && (!defined(EAGAIN) || (EWOULDBLOCK != EAGAIN))
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if (errno == EWOULDBLOCK)
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return 0;
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#endif
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sprintf(conn->errorMessage,
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"pqReadData() -- read() failed: errno=%d\n%s\n",
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errno, strerror(errno));
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@ -374,6 +383,15 @@ tryAgain2:
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{
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if (errno == EINTR)
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goto tryAgain2;
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/* Some systems return EAGAIN/EWOULDBLOCK for no data */
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#ifdef EAGAIN
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if (errno == EAGAIN)
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return 0;
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#endif
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#if defined(EWOULDBLOCK) && (!defined(EAGAIN) || (EWOULDBLOCK != EAGAIN))
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if (errno == EWOULDBLOCK)
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return 0;
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#endif
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sprintf(conn->errorMessage,
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"pqReadData() -- read() failed: errno=%d\n%s\n",
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errno, strerror(errno));
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