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().

1 files changed, 5 insertions, 1 deletions

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);