From 71a6f8b85b9f748dc7f33c1212c4474e8beb901a Mon Sep 17 00:00:00 2001
From: Tom Lane
Date: Sat, 7 Oct 2006 19:25:29 +0000
Subject: On platforms that have getrlimit(RLIMIT_STACK), use it to ensure that
 max_stack_depth is not set to an unsafe value.

This commit also provides configure-time checking for <sys/resource.h>,
and cleans up some perhaps-unportable code associated with use of that
include file and getrlimit().
---
 src/include/tcop/tcopprot.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/include/tcop')

diff --git a/src/include/tcop/tcopprot.h b/src/include/tcop/tcopprot.h
index e6637edeb7f..2006b7c6828 100644
--- a/src/include/tcop/tcopprot.h
+++ b/src/include/tcop/tcopprot.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/tcop/tcopprot.h,v 1.84 2006/10/04 00:30:10 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/tcop/tcopprot.h,v 1.85 2006/10/07 19:25:29 tgl Exp $
  *
  * OLD COMMENTS
  *	  This file was created so that other c files could get the two
@@ -23,6 +23,9 @@
 #include "utils/guc.h"
 
 
+/* Required daylight between max_stack_depth and the kernel limit, in bytes */
+#define STACK_DEPTH_SLOP (512 * 1024L)
+
 extern CommandDest whereToSendOutput;
 extern DLLIMPORT const char *debug_query_string;
 extern int	max_stack_depth;
@@ -62,6 +65,7 @@ extern void FloatExceptionHandler(SIGNAL_ARGS);
 extern void prepare_for_client_read(void);
 extern void client_read_ended(void);
 extern int	PostgresMain(int argc, char *argv[], const char *username);
+extern long get_stack_depth_rlimit(void);
 extern void ResetUsage(void);
 extern void ShowUsage(const char *title);
 extern int	check_log_duration(char *msec_str, bool was_logged);
-- 
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