Replace max_expr_depth parameter with a max_stack_depth parameter that
is measured in kilobytes and checked against actual physical execution stack depth, as per my proposal of 30-Dec. This gives us a fairly bulletproof defense against crashing due to runaway recursive functions.
This commit is contained in:
Tom Lane
parent
a09b9a36d3
commit
8899a2aba9
|
|
@ -1,5 +1,5 @@
|
|||
<!--
|
||||
$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.253 2004/03/24 03:48:41 neilc Exp $
|
||||
$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.254 2004/03/24 22:40:28 tgl Exp $
|
||||
-->
|
||||
|
||||
<Chapter Id="runtime">
|
||||
|
|
@ -889,6 +889,26 @@ SET ENABLE_SEQSCAN TO OFF;
|
|||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry id="guc-max-stack-depth" xreflabel="max_stack_depth">
|
||||
<term><varname>max_stack_depth</varname> (<type>integer</type>)</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Specifies the maximum safe depth of the server's execution stack.
|
||||
The ideal setting for this parameter is the actual stack size limit
|
||||
enforced by the kernel (as set by <literal>ulimit -s</> or local
|
||||
equivalent), less a safety margin of a megabyte or so. The safety
|
||||
margin is needed because the stack depth is not checked in every
|
||||
routine in the server, but only in key potentially-recursive routines
|
||||
such as expression evaluation. Setting the parameter higher than
|
||||
the actual kernel limit will mean that a runaway recursive function
|
||||
can crash an individual backend process. The default setting is
|
||||
2048 KB (two megabytes), which is conservatively small and unlikely
|
||||
to risk crashes. However, it may be too small to allow execution
|
||||
of complex functions.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
</variablelist>
|
||||
</sect3>
|
||||
<sect3 id="runtime-config-resource-fsm">
|
||||
|
|
@ -2573,18 +2593,6 @@ dynamic_library_path = '/usr/local/lib/postgresql:/home/my_project/lib:$libdir'
|
|||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry id="guc-max-expr-depth" xreflabel="max_expr_depth">
|
||||
<term><varname>max_expr_depth</varname> (<type>integer</type>)</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Sets the maximum expression nesting depth of the parser. The
|
||||
default value of 10000 is high enough for any normal query,
|
||||
but you can raise it if needed. (But if you raise it too high,
|
||||
you run the risk of server crashes due to stack overflow.)
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
</variablelist>
|
||||
</sect3>
|
||||
</sect2>
|
||||
|
|
|
|||
|
|
@ -8,7 +8,7 @@
|
|||
*
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/executor/execQual.c,v 1.156 2004/03/17 20:48:42 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/executor/execQual.c,v 1.157 2004/03/24 22:40:28 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
|
|
@ -27,6 +27,11 @@
|
|||
* trying to speed it up, the execution plan should be pre-processed
|
||||
* to facilitate attribute sharing between nodes wherever possible,
|
||||
* instead of doing needless copying. -cim 5/31/91
|
||||
*
|
||||
* During expression evaluation, we check_stack_depth only in
|
||||
* ExecMakeFunctionResult rather than at every single node. This
|
||||
* is a compromise that trades off precision of the stack limit setting
|
||||
* to gain speed.
|
||||
*/
|
||||
|
||||
#include "postgres.h"
|
||||
|
|
@ -840,6 +845,9 @@ ExecMakeFunctionResult(FuncExprState *fcache,
|
|||
bool hasSetArg;
|
||||
int i;
|
||||
|
||||
/* Guard against stack overflow due to overly complex expressions */
|
||||
check_stack_depth();
|
||||
|
||||
/*
|
||||
* arguments is a list of expressions to evaluate before passing to
|
||||
* the function manager. We skip the evaluation if it was already
|
||||
|
|
@ -1058,6 +1066,9 @@ ExecMakeFunctionResultNoSets(FuncExprState *fcache,
|
|||
FunctionCallInfoData fcinfo;
|
||||
int i;
|
||||
|
||||
/* Guard against stack overflow due to overly complex expressions */
|
||||
check_stack_depth();
|
||||
|
||||
if (isDone)
|
||||
*isDone = ExprSingleResult;
|
||||
|
||||
|
|
@ -2503,6 +2514,10 @@ ExecInitExpr(Expr *node, PlanState *parent)
|
|||
|
||||
if (node == NULL)
|
||||
return NULL;
|
||||
|
||||
/* Guard against stack overflow due to overly complex expressions */
|
||||
check_stack_depth();
|
||||
|
||||
switch (nodeTag(node))
|
||||
{
|
||||
case T_Var:
|
||||
|
|
|
|||
|
|
@ -8,7 +8,7 @@
|
|||
*
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.166 2004/03/21 22:29:11 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.167 2004/03/24 22:40:28 tgl Exp $
|
||||
*
|
||||
* HISTORY
|
||||
* AUTHOR DATE MAJOR EVENT
|
||||
|
|
@ -2347,6 +2347,10 @@ expression_tree_walker(Node *node,
|
|||
*/
|
||||
if (node == NULL)
|
||||
return false;
|
||||
|
||||
/* Guard against stack overflow due to overly complex expressions */
|
||||
check_stack_depth();
|
||||
|
||||
switch (nodeTag(node))
|
||||
{
|
||||
case T_Var:
|
||||
|
|
@ -2720,6 +2724,10 @@ expression_tree_mutator(Node *node,
|
|||
|
||||
if (node == NULL)
|
||||
return NULL;
|
||||
|
||||
/* Guard against stack overflow due to overly complex expressions */
|
||||
check_stack_depth();
|
||||
|
||||
switch (nodeTag(node))
|
||||
{
|
||||
case T_Var:
|
||||
|
|
|
|||
|
|
@ -8,7 +8,7 @@
|
|||
*
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.166 2004/03/17 20:48:42 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.167 2004/03/24 22:40:29 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
|
|
@ -35,9 +35,6 @@
|
|||
#include "utils/syscache.h"
|
||||
|
||||
|
||||
int max_expr_depth = DEFAULT_MAX_EXPR_DEPTH;
|
||||
static int expr_depth_counter = 0;
|
||||
|
||||
bool Transform_null_equals = false;
|
||||
|
||||
static Node *typecast_expression(ParseState *pstate, Node *expr,
|
||||
|
|
@ -47,19 +44,6 @@ static Node *transformIndirection(ParseState *pstate, Node *basenode,
|
|||
List *indirection);
|
||||
|
||||
|
||||
/*
|
||||
* Initialize for parsing a new query.
|
||||
*
|
||||
* We reset the expression depth counter here, in case it was left nonzero
|
||||
* due to ereport()'ing out of the last parsing operation.
|
||||
*/
|
||||
void
|
||||
parse_expr_init(void)
|
||||
{
|
||||
expr_depth_counter = 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* transformExpr -
|
||||
* Analyze and transform expressions. Type checking and type casting is
|
||||
|
|
@ -92,20 +76,8 @@ transformExpr(ParseState *pstate, Node *expr)
|
|||
if (expr == NULL)
|
||||
return NULL;
|
||||
|
||||
/*
|
||||
* Guard against an overly complex expression leading to coredump due
|
||||
* to stack overflow here, or in later recursive routines that
|
||||
* traverse expression trees. Note that this is very unlikely to
|
||||
* happen except with pathological queries; but we don't want someone
|
||||
* to be able to crash the backend quite that easily...
|
||||
*/
|
||||
if (++expr_depth_counter > max_expr_depth)
|
||||
ereport(ERROR,
|
||||
(errcode(ERRCODE_STATEMENT_TOO_COMPLEX),
|
||||
errmsg("expression too complex"),
|
||||
errdetail("Nesting depth exceeds maximum expression depth %d.",
|
||||
max_expr_depth),
|
||||
errhint("Increase the configuration parameter \"max_expr_depth\".")));
|
||||
/* Guard against stack overflow due to overly complex expressions */
|
||||
check_stack_depth();
|
||||
|
||||
switch (nodeTag(expr))
|
||||
{
|
||||
|
|
@ -938,8 +910,6 @@ transformExpr(ParseState *pstate, Node *expr)
|
|||
break;
|
||||
}
|
||||
|
||||
expr_depth_counter--;
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -14,7 +14,7 @@
|
|||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/parser/parser.c,v 1.60 2003/11/29 19:51:52 pgsql Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/parser/parser.c,v 1.61 2004/03/24 22:40:29 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
|
|
@ -50,7 +50,6 @@ raw_parser(const char *str)
|
|||
|
||||
scanner_init(str);
|
||||
parser_init();
|
||||
parse_expr_init();
|
||||
|
||||
yyresult = yyparse();
|
||||
|
||||
|
|
|
|||
|
|
@ -8,7 +8,7 @@
|
|||
*
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.396 2004/03/21 22:29:11 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.397 2004/03/24 22:40:29 tgl Exp $
|
||||
*
|
||||
* NOTES
|
||||
* this is the "main" module of the postgres backend and
|
||||
|
|
@ -92,11 +92,22 @@ bool Log_disconnections = false;
|
|||
*/
|
||||
int XfuncMode = 0;
|
||||
|
||||
/* GUC variable for maximum stack depth (measured in kilobytes) */
|
||||
int max_stack_depth = 2048;
|
||||
|
||||
|
||||
/* ----------------
|
||||
* private variables
|
||||
* ----------------
|
||||
*/
|
||||
|
||||
/* max_stack_depth converted to bytes for speed of checking */
|
||||
static int max_stack_depth_bytes = 2048*1024;
|
||||
|
||||
/* stack base pointer (initialized by PostgresMain) */
|
||||
static char *stack_base_ptr = NULL;
|
||||
|
||||
|
||||
/*
|
||||
* Flag to mark SIGHUP. Whenever the main loop comes around it
|
||||
* will reread the configuration file. (Better than doing the
|
||||
|
|
@ -1970,6 +1981,64 @@ ProcessInterrupts(void)
|
|||
}
|
||||
|
||||
|
||||
/*
|
||||
* check_stack_depth: check for excessively deep recursion
|
||||
*
|
||||
* This should be called someplace in any recursive routine that might possibly
|
||||
* recurse deep enough to overflow the stack. Most Unixen treat stack
|
||||
* overflow as an unrecoverable SIGSEGV, so we want to error out ourselves
|
||||
* before hitting the hardware limit. Unfortunately we have no direct way
|
||||
* to detect the hardware limit, so we have to rely on the admin to set a
|
||||
* GUC variable for it ...
|
||||
*/
|
||||
void
|
||||
check_stack_depth(void)
|
||||
{
|
||||
char stack_top_loc;
|
||||
int stack_depth;
|
||||
|
||||
/*
|
||||
* Compute distance from PostgresMain's local variables to my own
|
||||
*
|
||||
* Note: in theory stack_depth should be ptrdiff_t or some such, but
|
||||
* since the whole point of this code is to bound the value to something
|
||||
* much less than integer-sized, int should work fine.
|
||||
*/
|
||||
stack_depth = (int) (stack_base_ptr - &stack_top_loc);
|
||||
/*
|
||||
* Take abs value, since stacks grow up on some machines, down on others
|
||||
*/
|
||||
if (stack_depth < 0)
|
||||
stack_depth = -stack_depth;
|
||||
/*
|
||||
* Trouble?
|
||||
*
|
||||
* The test on stack_base_ptr prevents us from erroring out if called
|
||||
* during process setup or in a non-backend process. Logically it should
|
||||
* be done first, but putting it here avoids wasting cycles during normal
|
||||
* cases.
|
||||
*/
|
||||
if (stack_depth > max_stack_depth_bytes &&
|
||||
stack_base_ptr != NULL)
|
||||
{
|
||||
ereport(ERROR,
|
||||
(errcode(ERRCODE_STATEMENT_TOO_COMPLEX),
|
||||
errmsg("stack depth limit exceeded"),
|
||||
errhint("Increase the configuration parameter \"max_stack_depth\".")));
|
||||
}
|
||||
}
|
||||
|
||||
/* GUC assign hook to update max_stack_depth_bytes from max_stack_depth */
|
||||
bool
|
||||
assign_max_stack_depth(int newval, bool doit, GucSource source)
|
||||
{
|
||||
/* Range check was already handled by guc.c */
|
||||
if (doit)
|
||||
max_stack_depth_bytes = newval * 1024;
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
usage(char *progname)
|
||||
{
|
||||
|
|
@ -2030,6 +2099,7 @@ PostgresMain(int argc, char *argv[], const char *username)
|
|||
GucSource gucsource;
|
||||
char *tmp;
|
||||
int firstchar;
|
||||
char stack_base;
|
||||
StringInfoData input_message;
|
||||
volatile bool send_rfq = true;
|
||||
|
||||
|
|
@ -2069,6 +2139,9 @@ PostgresMain(int argc, char *argv[], const char *username)
|
|||
|
||||
SetProcessingMode(InitProcessing);
|
||||
|
||||
/* Set up reference point for stack depth checking */
|
||||
stack_base_ptr = &stack_base;
|
||||
|
||||
/*
|
||||
* Set default values for command-line options.
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -10,7 +10,7 @@
|
|||
* Written by Peter Eisentraut <peter_e@gmx.net>.
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.192 2004/03/23 01:23:48 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.193 2004/03/24 22:40:29 tgl Exp $
|
||||
*
|
||||
*--------------------------------------------------------------------
|
||||
*/
|
||||
|
|
@ -1023,6 +1023,15 @@ static struct config_int ConfigureNamesInt[] =
|
|||
16384, 1024, INT_MAX / 1024, NULL, NULL
|
||||
},
|
||||
|
||||
{
|
||||
{"max_stack_depth", PGC_SUSET, RESOURCES_MEM,
|
||||
gettext_noop("Sets the maximum stack depth, in kilobytes."),
|
||||
NULL
|
||||
},
|
||||
&max_stack_depth,
|
||||
2048, 100, INT_MAX / 1024, assign_max_stack_depth, NULL
|
||||
},
|
||||
|
||||
{
|
||||
{"vacuum_cost_page_hit", PGC_USERSET, RESOURCES,
|
||||
gettext_noop("Vacuum cost for a page found in the buffer cache."),
|
||||
|
|
@ -1097,14 +1106,6 @@ static struct config_int ConfigureNamesInt[] =
|
|||
0, 0, INT_MAX, NULL, NULL
|
||||
},
|
||||
#endif
|
||||
{
|
||||
{"max_expr_depth", PGC_USERSET, CLIENT_CONN_OTHER,
|
||||
gettext_noop("Sets the maximum expression nesting depth."),
|
||||
NULL
|
||||
},
|
||||
&max_expr_depth,
|
||||
DEFAULT_MAX_EXPR_DEPTH, 10, INT_MAX, NULL, NULL
|
||||
},
|
||||
|
||||
{
|
||||
{"statement_timeout", PGC_USERSET, CLIENT_CONN_STATEMENT,
|
||||
|
|
@ -1246,7 +1247,7 @@ static struct config_int ConfigureNamesInt[] =
|
|||
},
|
||||
|
||||
{
|
||||
{"debug_shared_buffers", PGC_POSTMASTER, RESOURCES_MEM,
|
||||
{"debug_shared_buffers", PGC_POSTMASTER, STATS_MONITORING,
|
||||
gettext_noop("Interval to report shared buffer status in seconds"),
|
||||
NULL
|
||||
},
|
||||
|
|
|
|||
|
|
@ -58,7 +58,7 @@
|
|||
#shared_buffers = 1000 # min 16, at least max_connections*2, 8KB each
|
||||
#work_mem = 1024 # min 64, size in KB
|
||||
#maintenance_work_mem = 16384 # min 1024, size in KB
|
||||
#debug_shared_buffers = 0 # 0-600 seconds
|
||||
#max_stack_depth = 2048 # min 100, size in KB
|
||||
|
||||
#vacuum_cost_page_hit = 1 # 0-10000 credits
|
||||
#vacuum_cost_page_miss = 10 # 0-10000 credits
|
||||
|
|
@ -204,6 +204,8 @@
|
|||
#log_executor_stats = false
|
||||
#log_statement_stats = false
|
||||
|
||||
#debug_shared_buffers = 0 # 0-600 seconds
|
||||
|
||||
# - Query/Index Statistics Collector -
|
||||
|
||||
#stats_start_collector = true
|
||||
|
|
@ -243,7 +245,6 @@
|
|||
|
||||
#explain_pretty_print = true
|
||||
#dynamic_library_path = '$libdir'
|
||||
#max_expr_depth = 10000 # min 10
|
||||
|
||||
|
||||
#---------------------------------------------------------------------------
|
||||
|
|
|
|||
|
|
@ -3,7 +3,7 @@
|
|||
*
|
||||
* Copyright (c) 2000-2003, PostgreSQL Global Development Group
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/bin/psql/tab-complete.c,v 1.102 2004/03/23 01:23:48 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/bin/psql/tab-complete.c,v 1.103 2004/03/24 22:40:29 tgl Exp $
|
||||
*/
|
||||
|
||||
/*----------------------------------------------------------------------
|
||||
|
|
@ -535,11 +535,11 @@ psql_completion(char *text, int start, int end)
|
|||
"log_statement_stats",
|
||||
"maintenance_work_mem",
|
||||
"max_connections",
|
||||
"max_expr_depth",
|
||||
"max_files_per_process",
|
||||
"max_fsm_pages",
|
||||
"max_fsm_relations",
|
||||
"max_locks_per_transaction",
|
||||
"max_stack_depth",
|
||||
"password_encryption",
|
||||
"port",
|
||||
"random_page_cost",
|
||||
|
|
|
|||
|
|
@ -1,18 +1,19 @@
|
|||
/*-------------------------------------------------------------------------
|
||||
*
|
||||
* miscadmin.h
|
||||
* this file contains general postgres administration and initialization
|
||||
* This file contains general postgres administration and initialization
|
||||
* stuff that used to be spread out between the following files:
|
||||
* globals.h global variables
|
||||
* pdir.h directory path crud
|
||||
* pinit.h postgres initialization
|
||||
* pmod.h processing modes
|
||||
*
|
||||
* Over time, this has also become the preferred place for widely known
|
||||
* resource-limitation stuff, such as work_mem and check_stack_depth().
|
||||
*
|
||||
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/include/miscadmin.h,v 1.154 2004/03/23 01:23:48 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/include/miscadmin.h,v 1.155 2004/03/24 22:40:29 tgl Exp $
|
||||
*
|
||||
* NOTES
|
||||
* some of the information in this file should be moved to
|
||||
|
|
@ -70,7 +71,7 @@ extern volatile bool ImmediateInterruptOK;
|
|||
extern volatile uint32 InterruptHoldoffCount;
|
||||
extern volatile uint32 CritSectionCount;
|
||||
|
||||
/* in postgres.c */
|
||||
/* in tcop/postgres.c */
|
||||
extern void ProcessInterrupts(void);
|
||||
|
||||
#ifndef WIN32
|
||||
|
|
@ -224,6 +225,10 @@ extern char *UnixSocketDir;
|
|||
extern char *ListenAddresses;
|
||||
|
||||
|
||||
/* in tcop/postgres.c */
|
||||
extern void check_stack_depth(void);
|
||||
|
||||
|
||||
/*****************************************************************************
|
||||
* pdir.h -- *
|
||||
* POSTGRES directory path definitions. *
|
||||
|
|
|
|||
|
|
@ -7,7 +7,7 @@
|
|||
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/include/parser/parse_expr.h,v 1.32 2003/11/29 22:41:09 pgsql Exp $
|
||||
* $PostgreSQL: pgsql/src/include/parser/parse_expr.h,v 1.33 2004/03/24 22:40:29 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
|
|
@ -18,7 +18,6 @@
|
|||
|
||||
|
||||
/* GUC parameters */
|
||||
extern int max_expr_depth;
|
||||
extern bool Transform_null_equals;
|
||||
|
||||
|
||||
|
|
@ -26,6 +25,5 @@ extern Node *transformExpr(ParseState *pstate, Node *expr);
|
|||
extern Oid exprType(Node *expr);
|
||||
extern int32 exprTypmod(Node *expr);
|
||||
extern bool exprIsLengthCoercion(Node *expr, int32 *coercedTypmod);
|
||||
extern void parse_expr_init(void);
|
||||
|
||||
#endif /* PARSE_EXPR_H */
|
||||
|
|
|
|||
|
|
@ -6,7 +6,7 @@
|
|||
* for developers. If you edit any of these, be sure to do a *full*
|
||||
* rebuild (and an initdb if noted).
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/include/pg_config_manual.h,v 1.11 2004/03/12 00:25:40 neilc Exp $
|
||||
* $PostgreSQL: pgsql/src/include/pg_config_manual.h,v 1.12 2004/03/24 22:40:29 tgl Exp $
|
||||
*------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
|
|
@ -112,11 +112,6 @@
|
|||
*/
|
||||
#define MAXPGPATH 1024
|
||||
|
||||
/*
|
||||
* DEFAULT_MAX_EXPR_DEPTH: default value of max_expr_depth SET variable.
|
||||
*/
|
||||
#define DEFAULT_MAX_EXPR_DEPTH 10000
|
||||
|
||||
/*
|
||||
* PG_SOMAXCONN: maximum accept-queue length limit passed to
|
||||
* listen(2). You'd think we should use SOMAXCONN from
|
||||
|
|
|
|||
|
|
@ -7,7 +7,7 @@
|
|||
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/include/tcop/tcopprot.h,v 1.62 2004/03/15 15:56:27 momjian Exp $
|
||||
* $PostgreSQL: pgsql/src/include/tcop/tcopprot.h,v 1.63 2004/03/24 22:40:29 tgl Exp $
|
||||
*
|
||||
* OLD COMMENTS
|
||||
* This file was created so that other c files could get the two
|
||||
|
|
@ -23,6 +23,7 @@
|
|||
|
||||
#include "executor/execdesc.h"
|
||||
#include "tcop/dest.h"
|
||||
#include "utils/guc.h"
|
||||
|
||||
|
||||
extern DLLIMPORT sigjmp_buf Warn_restart;
|
||||
|
|
@ -32,6 +33,7 @@ extern CommandDest whereToSendOutput;
|
|||
extern bool log_hostname;
|
||||
extern DLLIMPORT const char *debug_query_string;
|
||||
extern char *rendezvous_name;
|
||||
extern int max_stack_depth;
|
||||
|
||||
#ifndef BOOTSTRAP_INCLUDE
|
||||
|
||||
|
|
@ -43,6 +45,9 @@ extern List *pg_analyze_and_rewrite(Node *parsetree,
|
|||
extern List *pg_rewrite_queries(List *querytree_list);
|
||||
extern Plan *pg_plan_query(Query *querytree);
|
||||
extern List *pg_plan_queries(List *querytrees, bool needSnapshot);
|
||||
|
||||
extern bool assign_max_stack_depth(int newval, bool doit, GucSource source);
|
||||
|
||||
#endif /* BOOTSTRAP_INCLUDE */
|
||||
|
||||
extern void die(SIGNAL_ARGS);
|
||||
|
|
|
|||
Loading…
Reference in New Issue