Line data    Source code

       1              : /*-------------------------------------------------------------------------
       2              :  *
       3              :  * pg_config.c
       4              :  *      Expose same output as pg_config except as an SRF
       5              :  *
       6              :  * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
       7              :  * Portions Copyright (c) 1994, Regents of the University of California
       8              :  *
       9              :  * IDENTIFICATION
      10              :  *    src/backend/utils/misc/pg_config.c
      11              :  *
      12              :  *-------------------------------------------------------------------------
      13              :  */
      14              : 
      15              : #include "postgres.h"
      16              : 
      17              : #include "common/config_info.h"
      18              : #include "funcapi.h"
      19              : #include "miscadmin.h"
      20              : #include "utils/builtins.h"
      21              : #include "utils/tuplestore.h"
      22              : 
      23              : Datum
      24            4 : pg_config(PG_FUNCTION_ARGS)
      25              : {
      26            4 :     ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo;
      27              :     ConfigData *configdata;
      28              :     size_t      configdata_len;
      29            4 :     int         i = 0;
      30              : 
      31              :     /* initialize our tuplestore */
      32            4 :     InitMaterializedSRF(fcinfo, 0);
      33              : 
      34            4 :     configdata = get_configdata(my_exec_path, &configdata_len);
      35           96 :     for (i = 0; i < configdata_len; i++)
      36              :     {
      37              :         Datum       values[2];
      38              :         bool        nulls[2];
      39              : 
      40           92 :         memset(values, 0, sizeof(values));
      41           92 :         memset(nulls, 0, sizeof(nulls));
      42              : 
      43           92 :         values[0] = CStringGetTextDatum(configdata[i].name);
      44           92 :         values[1] = CStringGetTextDatum(configdata[i].setting);
      45              : 
      46           92 :         tuplestore_putvalues(rsinfo->setResult, rsinfo->setDesc, values, nulls);
      47              :     }
      48              : 
      49            4 :     return (Datum) 0;
      50              : }