TLA  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) 1996-2023, 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 "catalog/pg_type.h"
      18                 : #include "common/config_info.h"
      19                 : #include "funcapi.h"
      20                 : #include "miscadmin.h"
      21                 : #include "port.h"
      22                 : #include "utils/builtins.h"
      23                 : 
      24                 : Datum
      25 CBC           3 : pg_config(PG_FUNCTION_ARGS)
      26                 : {
      27               3 :     ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo;
      28                 :     ConfigData *configdata;
      29                 :     size_t      configdata_len;
      30               3 :     int         i = 0;
      31                 : 
      32                 :     /* initialize our tuplestore */
      33               3 :     InitMaterializedSRF(fcinfo, 0);
      34                 : 
      35               3 :     configdata = get_configdata(my_exec_path, &configdata_len);
      36              72 :     for (i = 0; i < configdata_len; i++)
      37                 :     {
      38                 :         Datum       values[2];
      39                 :         bool        nulls[2];
      40                 : 
      41              69 :         memset(values, 0, sizeof(values));
      42              69 :         memset(nulls, 0, sizeof(nulls));
      43                 : 
      44              69 :         values[0] = CStringGetTextDatum(configdata[i].name);
      45              69 :         values[1] = CStringGetTextDatum(configdata[i].setting);
      46                 : 
      47              69 :         tuplestore_putvalues(rsinfo->setResult, rsinfo->setDesc, values, nulls);
      48                 :     }
      49                 : 
      50               3 :     return (Datum) 0;
      51                 : }