Header And Logo
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#include "postgres_fe.h"#include "pg_upgrade.h"#include "access/transam.h"
Go to the source code of this file.
Defines | |
| #define | PG_UPGRADE_SUPPORT "$libdir/pg_upgrade_support" |
Functions | |
| void | install_support_functions_in_new_db (const char *db_name) |
| void | uninstall_support_functions_from_new_cluster (void) |
| void | get_loadable_libraries (void) |
| void | check_loadable_libraries (void) |
| #define PG_UPGRADE_SUPPORT "$libdir/pg_upgrade_support" |
Definition at line 16 of file function.c.
Referenced by check_loadable_libraries(), and get_loadable_libraries().
| void check_loadable_libraries | ( | void | ) |
Definition at line 276 of file function.c.
References check_ok(), conn, connectToServer(), fopen_priv(), GET_MAJOR_VERSION, getErrorText(), OSInfo::libraries, ClusterInfo::major_version, MAXPGPATH, new_cluster, NULL, OSInfo::num_libraries, old_cluster, os_info, PG_FATAL, pg_log(), PG_REPORT, PG_UPGRADE_SUPPORT, PGRES_COMMAND_OK, PQclear(), PQerrorMessage(), PQescapeStringConn(), PQexec(), PQfinish(), PQresultStatus(), prep_status(), and snprintf().
Referenced by check_new_cluster().
{
PGconn *conn = connectToServer(&new_cluster, "template1");
int libnum;
FILE *script = NULL;
bool found = false;
char output_path[MAXPGPATH];
prep_status("Checking for presence of required libraries");
snprintf(output_path, sizeof(output_path), "loadable_libraries.txt");
for (libnum = 0; libnum < os_info.num_libraries; libnum++)
{
char *lib = os_info.libraries[libnum];
int llen = strlen(lib);
char cmd[7 + 2 * MAXPGPATH + 1];
PGresult *res;
/*
* In Postgres 9.0, Python 3 support was added, and to do that, a
* plpython2u language was created with library name plpython2.so as a
* symbolic link to plpython.so. In Postgres 9.1, only the
* plpython2.so library was created, and both plpythonu and plpython2u
* pointing to it. For this reason, any reference to library name
* "plpython" in an old PG <= 9.1 cluster must look for "plpython2" in
* the new cluster.
*
* For this case, we could check pg_pltemplate, but that only works
* for languages, and does not help with function shared objects, so
* we just do a general fix.
*/
if (GET_MAJOR_VERSION(old_cluster.major_version) < 901 &&
strcmp(lib, "$libdir/plpython") == 0)
{
lib = "$libdir/plpython2";
llen = strlen(lib);
}
strcpy(cmd, "LOAD '");
PQescapeStringConn(conn, cmd + strlen(cmd), lib, llen, NULL);
strcat(cmd, "'");
res = PQexec(conn, cmd);
if (PQresultStatus(res) != PGRES_COMMAND_OK)
{
found = true;
/* exit and report missing support library with special message */
if (strcmp(lib, PG_UPGRADE_SUPPORT) == 0)
pg_log(PG_FATAL,
"The pg_upgrade_support module must be created and installed in the new cluster.\n");
if (script == NULL && (script = fopen_priv(output_path, "w")) == NULL)
pg_log(PG_FATAL, "Could not open file \"%s\": %s\n",
output_path, getErrorText(errno));
fprintf(script, "Could not load library \"%s\"\n%s\n",
lib,
PQerrorMessage(conn));
}
PQclear(res);
}
PQfinish(conn);
if (found)
{
fclose(script);
pg_log(PG_REPORT, "fatal\n");
pg_log(PG_FATAL,
"Your installation references loadable libraries that are missing from the\n"
"new installation. You can add these libraries to the new installation,\n"
"or remove the functions using them from the old installation. A list of\n"
"problem libraries is in the file:\n"
" %s\n\n", output_path);
}
else
check_ok();
}
| void get_loadable_libraries | ( | void | ) |
Definition at line 130 of file function.c.
References conn, connectToServer(), DbInfo::db_name, ClusterInfo::dbarr, DbInfoArr::dbs, executeQueryOrDie(), FirstNormalObjectId, GET_MAJOR_VERSION, OSInfo::libraries, ClusterInfo::major_version, DbInfoArr::ndbs, OSInfo::num_libraries, old_cluster, os_info, PG_FATAL, pg_free(), pg_log(), pg_malloc(), pg_strdup(), PG_UPGRADE_SUPPORT, PG_WARNING, PQclear(), PQfinish(), PQgetvalue(), and PQntuples().
Referenced by check_and_dump_old_cluster().
{
PGresult **ress;
int totaltups;
int dbnum;
bool found_public_plpython_handler = false;
ress = (PGresult **) pg_malloc(old_cluster.dbarr.ndbs * sizeof(PGresult *));
totaltups = 0;
/* Fetch all library names, removing duplicates within each DB */
for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
{
DbInfo *active_db = &old_cluster.dbarr.dbs[dbnum];
PGconn *conn = connectToServer(&old_cluster, active_db->db_name);
/*
* Fetch all libraries referenced in this DB. We can't exclude the
* "pg_catalog" schema because, while such functions are not
* explicitly dumped by pg_dump, they do reference implicit objects
* that pg_dump does dump, e.g. CREATE LANGUAGE plperl.
*/
ress[dbnum] = executeQueryOrDie(conn,
"SELECT DISTINCT probin "
"FROM pg_catalog.pg_proc "
"WHERE prolang = 13 /* C */ AND "
"probin IS NOT NULL AND "
"oid >= %u;",
FirstNormalObjectId);
totaltups += PQntuples(ress[dbnum]);
/*
* Systems that install plpython before 8.1 have
* plpython_call_handler() defined in the "public" schema, causing
* pg_dumpall to dump it. However that function still references
* "plpython" (no "2"), so it throws an error on restore. This code
* checks for the problem function, reports affected databases to the
* user and explains how to remove them. 8.1 git commit:
* e0dedd0559f005d60c69c9772163e69c204bac69
* http://archives.postgresql.org/pgsql-hackers/2012-03/msg01101.php
* http://archives.postgresql.org/pgsql-bugs/2012-05/msg00206.php
*/
if (GET_MAJOR_VERSION(old_cluster.major_version) < 901)
{
PGresult *res;
res = executeQueryOrDie(conn,
"SELECT 1 "
"FROM pg_catalog.pg_proc JOIN pg_namespace "
" ON pronamespace = pg_namespace.oid "
"WHERE proname = 'plpython_call_handler' AND "
"nspname = 'public' AND "
"prolang = 13 /* C */ AND "
"probin = '$libdir/plpython' AND "
"pg_proc.oid >= %u;",
FirstNormalObjectId);
if (PQntuples(res) > 0)
{
if (!found_public_plpython_handler)
{
pg_log(PG_WARNING,
"\nThe old cluster has a \"plpython_call_handler\" function defined\n"
"in the \"public\" schema which is a duplicate of the one defined\n"
"in the \"pg_catalog\" schema. You can confirm this by executing\n"
"in psql:\n"
"\n"
" \\df *.plpython_call_handler\n"
"\n"
"The \"public\" schema version of this function was created by a\n"
"pre-8.1 install of plpython, and must be removed for pg_upgrade\n"
"to complete because it references a now-obsolete \"plpython\"\n"
"shared object file. You can remove the \"public\" schema version\n"
"of this function by running the following command:\n"
"\n"
" DROP FUNCTION public.plpython_call_handler()\n"
"\n"
"in each affected database:\n"
"\n");
}
pg_log(PG_WARNING, " %s\n", active_db->db_name);
found_public_plpython_handler = true;
}
PQclear(res);
}
PQfinish(conn);
}
if (found_public_plpython_handler)
pg_log(PG_FATAL,
"Remove the problem functions from the old cluster to continue.\n");
totaltups++; /* reserve for pg_upgrade_support */
/* Allocate what's certainly enough space */
os_info.libraries = (char **) pg_malloc(totaltups * sizeof(char *));
/*
* Now remove duplicates across DBs. This is pretty inefficient code, but
* there probably aren't enough entries to matter.
*/
totaltups = 0;
os_info.libraries[totaltups++] = pg_strdup(PG_UPGRADE_SUPPORT);
for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
{
PGresult *res = ress[dbnum];
int ntups;
int rowno;
ntups = PQntuples(res);
for (rowno = 0; rowno < ntups; rowno++)
{
char *lib = PQgetvalue(res, rowno, 0);
bool dup = false;
int n;
for (n = 0; n < totaltups; n++)
{
if (strcmp(lib, os_info.libraries[n]) == 0)
{
dup = true;
break;
}
}
if (!dup)
os_info.libraries[totaltups++] = pg_strdup(lib);
}
PQclear(res);
}
os_info.num_libraries = totaltups;
pg_free(ress);
}
| void install_support_functions_in_new_db | ( | const char * | db_name | ) |
Definition at line 25 of file function.c.
References conn, connectToServer(), executeQueryOrDie(), new_cluster, PQclear(), and PQfinish().
Referenced by create_new_objects(), and prepare_new_databases().
{
PGconn *conn = connectToServer(&new_cluster, db_name);
/* suppress NOTICE of dropped objects */
PQclear(executeQueryOrDie(conn,
"SET client_min_messages = warning;"));
PQclear(executeQueryOrDie(conn,
"DROP SCHEMA IF EXISTS binary_upgrade CASCADE;"));
PQclear(executeQueryOrDie(conn,
"RESET client_min_messages;"));
PQclear(executeQueryOrDie(conn,
"CREATE SCHEMA binary_upgrade;"));
PQclear(executeQueryOrDie(conn,
"CREATE OR REPLACE FUNCTION "
"binary_upgrade.set_next_pg_type_oid(OID) "
"RETURNS VOID "
"AS '$libdir/pg_upgrade_support' "
"LANGUAGE C STRICT;"));
PQclear(executeQueryOrDie(conn,
"CREATE OR REPLACE FUNCTION "
"binary_upgrade.set_next_array_pg_type_oid(OID) "
"RETURNS VOID "
"AS '$libdir/pg_upgrade_support' "
"LANGUAGE C STRICT;"));
PQclear(executeQueryOrDie(conn,
"CREATE OR REPLACE FUNCTION "
"binary_upgrade.set_next_toast_pg_type_oid(OID) "
"RETURNS VOID "
"AS '$libdir/pg_upgrade_support' "
"LANGUAGE C STRICT;"));
PQclear(executeQueryOrDie(conn,
"CREATE OR REPLACE FUNCTION "
"binary_upgrade.set_next_heap_pg_class_oid(OID) "
"RETURNS VOID "
"AS '$libdir/pg_upgrade_support' "
"LANGUAGE C STRICT;"));
PQclear(executeQueryOrDie(conn,
"CREATE OR REPLACE FUNCTION "
"binary_upgrade.set_next_index_pg_class_oid(OID) "
"RETURNS VOID "
"AS '$libdir/pg_upgrade_support' "
"LANGUAGE C STRICT;"));
PQclear(executeQueryOrDie(conn,
"CREATE OR REPLACE FUNCTION "
"binary_upgrade.set_next_toast_pg_class_oid(OID) "
"RETURNS VOID "
"AS '$libdir/pg_upgrade_support' "
"LANGUAGE C STRICT;"));
PQclear(executeQueryOrDie(conn,
"CREATE OR REPLACE FUNCTION "
"binary_upgrade.set_next_pg_enum_oid(OID) "
"RETURNS VOID "
"AS '$libdir/pg_upgrade_support' "
"LANGUAGE C STRICT;"));
PQclear(executeQueryOrDie(conn,
"CREATE OR REPLACE FUNCTION "
"binary_upgrade.set_next_pg_authid_oid(OID) "
"RETURNS VOID "
"AS '$libdir/pg_upgrade_support' "
"LANGUAGE C STRICT;"));
PQclear(executeQueryOrDie(conn,
"CREATE OR REPLACE FUNCTION "
"binary_upgrade.create_empty_extension(text, text, bool, text, oid[], text[], text[]) "
"RETURNS VOID "
"AS '$libdir/pg_upgrade_support' "
"LANGUAGE C;"));
PQfinish(conn);
}
| void uninstall_support_functions_from_new_cluster | ( | void | ) |
Definition at line 99 of file function.c.
References check_ok(), conn, connectToServer(), DbInfo::db_name, ClusterInfo::dbarr, DbInfoArr::dbs, executeQueryOrDie(), DbInfoArr::ndbs, new_cluster, PQclear(), PQfinish(), and prep_status().
Referenced by create_new_objects().
{
int dbnum;
prep_status("Removing support functions from new cluster");
for (dbnum = 0; dbnum < new_cluster.dbarr.ndbs; dbnum++)
{
DbInfo *new_db = &new_cluster.dbarr.dbs[dbnum];
PGconn *conn = connectToServer(&new_cluster, new_db->db_name);
/* suppress NOTICE of dropped objects */
PQclear(executeQueryOrDie(conn,
"SET client_min_messages = warning;"));
PQclear(executeQueryOrDie(conn,
"DROP SCHEMA binary_upgrade CASCADE;"));
PQclear(executeQueryOrDie(conn,
"RESET client_min_messages;"));
PQfinish(conn);
}
check_ok();
}
1.7.1