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94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/*
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* version.c
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*
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* Postgres-version-specific routines
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*
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* Copyright (c) 2010, PostgreSQL Global Development Group
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* contrib/pg_upgrade/version.c
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*/
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#include "pg_upgrade.h"
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#include "access/transam.h"
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/*
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* new_9_0_populate_pg_largeobject_metadata()
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* new >= 9.0, old <= 8.4
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* 9.0 has a new pg_largeobject permission table
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*/
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void
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new_9_0_populate_pg_largeobject_metadata(migratorContext *ctx, bool check_mode,
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Cluster whichCluster)
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{
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ClusterInfo *active_cluster = (whichCluster == CLUSTER_OLD) ?
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&ctx->old : &ctx->new;
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int dbnum;
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FILE *script = NULL;
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bool found = false;
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char output_path[MAXPGPATH];
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prep_status(ctx, "Checking for large objects");
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snprintf(output_path, sizeof(output_path), "%s/pg_largeobject.sql",
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ctx->cwd);
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for (dbnum = 0; dbnum < active_cluster->dbarr.ndbs; dbnum++)
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{
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PGresult *res;
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int i_count;
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DbInfo *active_db = &active_cluster->dbarr.dbs[dbnum];
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PGconn *conn = connectToServer(ctx, active_db->db_name, whichCluster);
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/* find if there are any large objects */
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res = executeQueryOrDie(ctx, conn,
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"SELECT count(*) "
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"FROM pg_catalog.pg_largeobject ");
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i_count = PQfnumber(res, "count");
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if (atoi(PQgetvalue(res, 0, i_count)) != 0)
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{
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found = true;
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if (!check_mode)
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{
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if (script == NULL && (script = fopen(output_path, "w")) == NULL)
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pg_log(ctx, PG_FATAL, "Could not create necessary file: %s\n", output_path);
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fprintf(script, "\\connect %s\n",
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quote_identifier(ctx, active_db->db_name));
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fprintf(script,
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"SELECT pg_catalog.lo_create(t.loid)\n"
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"FROM (SELECT DISTINCT loid FROM pg_catalog.pg_largeobject) AS t;\n");
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}
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}
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PQclear(res);
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PQfinish(conn);
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}
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if (found)
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{
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if (!check_mode)
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fclose(script);
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report_status(ctx, PG_WARNING, "warning");
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if (check_mode)
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pg_log(ctx, PG_WARNING, "\n"
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"| Your installation contains large objects.\n"
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"| The new database has an additional large object\n"
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"| permission table. After migration, you will be\n"
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"| given a command to populate the pg_largeobject\n"
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"| permission table with default permissions.\n\n");
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else
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pg_log(ctx, PG_WARNING, "\n"
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"| Your installation contains large objects.\n"
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"| The new database has an additional large object\n"
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"| permission table so default permissions must be\n"
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"| defined for all large objects. The file:\n"
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"| \t%s\n"
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"| when executed by psql by the database super-user\n"
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"| will define the default permissions.\n\n",
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output_path);
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}
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else
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check_ok(ctx);
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}
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