0001-Check-data-directory-block-size.patch

From f942136e09cd54b1032c7c5d9b4f3305e7dc043f Mon Sep 17 00:00:00 2001
From: Michael Banck <mbanck@debian.org>
Date: Wed, 13 Mar 2019 12:27:44 +0100
Subject: [PATCH] Check data directory block size

---
 src/bin/pg_checksums/pg_checksums.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/bin/pg_checksums/pg_checksums.c b/src/bin/pg_checksums/pg_checksums.c
index afca6cf027..dfd522ca6a 100644
--- a/src/bin/pg_checksums/pg_checksums.c
+++ b/src/bin/pg_checksums/pg_checksums.c
@@ -442,6 +442,17 @@ main(int argc, char *argv[])
 		exit(1);
 	}
 
+	/*
+	 * Check that the PGDATA blocksize is the same as the one pg_checksums
+	 * was compiled against (BLCKSZ).
+	 */
+	if (ControlFile->blcksz != BLCKSZ)
+	{
+		fprintf(stderr, _("%s: data directory block size %d is different to compiled-in block size %d.\n"),
+				progname, ControlFile->blcksz, BLCKSZ);
+		exit(1);
+	}
+
 	/* Save time of last control file modification */
 	controlfile_last_updated = ControlFile->time;
 
-- 
2.11.0