From 2cd799e94b8453f7fae4134e37de78328719d411 Mon Sep 17 00:00:00 2001 From: Michael Paquier Date: Fri, 10 Oct 2025 15:04:03 +0900 Subject: [PATCH v1 3/5] pg_createsubscriber: Use PG_VERSION generic routine --- src/bin/pg_basebackup/pg_createsubscriber.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/src/bin/pg_basebackup/pg_createsubscriber.c b/src/bin/pg_basebackup/pg_createsubscriber.c index d29407413d96..c3732adabc86 100644 --- a/src/bin/pg_basebackup/pg_createsubscriber.c +++ b/src/bin/pg_basebackup/pg_createsubscriber.c @@ -26,6 +26,7 @@ #include "fe_utils/recovery_gen.h" #include "fe_utils/simple_list.h" #include "fe_utils/string_utils.h" +#include "fe_utils/version.h" #include "getopt_long.h" #define DEFAULT_SUB_PORT "50432" @@ -407,7 +408,7 @@ static void check_data_directory(const char *datadir) { struct stat statbuf; - char versionfile[MAXPGPATH]; + uint32 major_version; pg_log_info("checking if directory \"%s\" is a cluster data directory", datadir); @@ -420,11 +421,18 @@ check_data_directory(const char *datadir) pg_fatal("could not access directory \"%s\": %m", datadir); } - snprintf(versionfile, MAXPGPATH, "%s/PG_VERSION", datadir); - if (stat(versionfile, &statbuf) != 0 && errno == ENOENT) + /* + * Retrieve the contents of this cluster's PG_VERSION. We require + * compatibility with the same major version as the one this tool is + * compiled with. + */ + major_version = GET_PG_MAJORVERSION_NUM(get_pg_version(datadir, NULL)); + if (major_version != PG_MAJORVERSION_NUM) { - pg_fatal("directory \"%s\" is not a database cluster directory", - datadir); + pg_log_error("data directory is of wrong version"); + pg_log_error_detail("File \"%s\" contains \"%u\", which is not compatible with this program's version \"%u\".", + "PG_VERSION", major_version, PG_MAJORVERSION_NUM); + exit(1); } } -- 2.51.0