[HACKERS] avoid create a tablespace in pg_tblspc

[Jaime Casanova]

Hi,

bug report http://archives.postgresql.org/pgsql-bugs/2008-10/msg00037.php
seems like a reasonably request to me... and one that is simple to
fulfill, just create a PG_VERSION in the pg_tblspc dir at initdb.
if no one objects, here is a one linear patch for that

-- 
regards,
Jaime Casanova
Soporte y capacitación de PostgreSQL
Asesoría y desarrollo de sistemas
Guayaquil - Ecuador
Cel. +59387171157

Index: src/bin/initdb/initdb.c
===================================================================
RCS file: /var/lib/postgresql/CVSREPO/pgsql/src/bin/initdb/initdb.c,v
retrieving revision 1.162
diff -c -r1.162 initdb.c
*** src/bin/initdb/initdb.c	30 Sep 2008 10:52:13 -0000	1.162
--- src/bin/initdb/initdb.c	9 Oct 2008 20:26:56 -0000
***************
*** 3128,3133 ****
--- 3128,3138 ----
  	bootstrap_template1(short_version);
  
  	/*
+ 	 * Disallow use pg_data/pg_tblspc itself as a location for a tablespace
+ 	 */
+ 	set_short_version(short_version, "pg_tblspc");
+ 
+ 	/*
  	 * Make the per-database PG_VERSION for template1 only after init'ing it
  	 */
  	set_short_version(short_version, "base/1");

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