postgresql15/postgresql-var-run-socket.patch

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Change the built-in default socket directory to be /run/postgresql.
For backwards compatibility with (probably non-libpq-based) clients that
might still expect to find the socket in /tmp, also create a socket in
/tmp. This is to resolve communication problems with clients operating
under systemd's PrivateTmp environment, which won't be using the same
global /tmp directory as the server; see bug #825448.
Note that we apply the socket directory change at the level of the
hard-wired defaults in the C code, not by just twiddling the setting in
postgresql.conf.sample; this is so that the change will take effect on
server package update, without requiring any existing postgresql.conf
to be updated. (Of course, a user who dislikes this behavior can still
override it via postgresql.conf.)
Index: src/backend/utils/misc/guc.c
===================================================================
--- src/backend/utils/misc/guc.c.orig
+++ src/backend/utils/misc/guc.c
@@ -4451,7 +4451,7 @@ static struct config_string ConfigureNam
},
&Unix_socket_directories,
#ifdef HAVE_UNIX_SOCKETS
- DEFAULT_PGSOCKET_DIR,
+ DEFAULT_PGSOCKET_DIR ", /tmp",
#else
"",
#endif
Index: src/bin/initdb/initdb.c
===================================================================
--- src/bin/initdb/initdb.c.orig
+++ src/bin/initdb/initdb.c
@@ -1044,7 +1044,7 @@ setup_config(void)
#ifdef HAVE_UNIX_SOCKETS
snprintf(repltok, sizeof(repltok), "#unix_socket_directories = '%s'",
- DEFAULT_PGSOCKET_DIR);
+ DEFAULT_PGSOCKET_DIR ", /tmp");
#else
snprintf(repltok, sizeof(repltok), "#unix_socket_directories = ''");
#endif
Index: src/include/pg_config_manual.h
===================================================================
--- src/include/pg_config_manual.h.orig
+++ src/include/pg_config_manual.h
@@ -224,7 +224,7 @@
* support them yet.
*/
#ifndef WIN32
-#define DEFAULT_PGSOCKET_DIR "/tmp"
+#define DEFAULT_PGSOCKET_DIR "/run/postgresql"
#else
#define DEFAULT_PGSOCKET_DIR ""
#endif