diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml
index d0b78f2..009fd82 100644
--- a/doc/src/sgml/catalogs.sgml
+++ b/doc/src/sgml/catalogs.sgml
@@ -3386,6 +3386,55 @@
+
+ <structname>pg_file_settings</structname>
+
+
+ pg_file_settings
+
+
+
+ The view pg_file_settings provides confirm parameters via SQL,
+ which is written in configuration file. This view can be update by reloading configration file.
+
+
+
+ <structname>pg_file_settings</> Columns
+
+
+
+
+ Name
+ Type
+ Description
+
+
+
+
+ sourcefile
+ text
+ A path of configration file
+
+
+ sourceline
+ integer
+ The line number in configuration file
+
+
+ name
+ text
+ Parameter name in configuration file
+
+
+ setting
+ text
+ Value of the parameter in configuration file
+
+
+
+
+
+<structname>pg_foreign_data_wrapper</structname>
@@ -7290,6 +7339,11 @@
+ pg_file_settings
+ parameter settings of file
+
+
+ pg_groupgroups of database users
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index 2800f73..bdebd7d 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -411,6 +411,12 @@ CREATE RULE pg_settings_n AS
GRANT SELECT, UPDATE ON pg_settings TO PUBLIC;
+CREATE VIEW pg_file_settings AS
+ SELECT * FROM pg_show_all_file_settings() AS A;
+
+REVOKE ALL on pg_file_settings FROM PUBLIC;
+REVOKE EXECUTE ON FUNCTION pg_show_all_file_settings() FROM PUBLIC;
+
CREATE VIEW pg_timezone_abbrevs AS
SELECT * FROM pg_timezone_abbrevs();
diff --git a/src/backend/utils/misc/guc-file.l b/src/backend/utils/misc/guc-file.l
index c5e0fac..978f95d 100644
--- a/src/backend/utils/misc/guc-file.l
+++ b/src/backend/utils/misc/guc-file.l
@@ -119,6 +119,8 @@ ProcessConfigFile(GucContext context)
ConfigVariable *item,
*head,
*tail;
+ ConfigFileVariable *guc_array;
+ size_t guc_array_size;
int i;
/*
@@ -255,6 +257,7 @@ ProcessConfigFile(GucContext context)
error = true;
ConfFileWithError = item->filename;
}
+ num_guc_file_variables++;
}
/*
@@ -342,6 +345,42 @@ ProcessConfigFile(GucContext context)
}
/*
+ * Calculate size of guc_array and allocate it. From the secound time to allcate memory,
+ * we should free old allocated memory.
+ */
+ guc_array_size = num_guc_file_variables * sizeof(struct ConfigFileVariable);
+ if (!guc_file_variables)
+ {
+ /* For the first call */
+ guc_file_variables = (ConfigFileVariable *) guc_malloc(FATAL, guc_array_size);
+ }
+ else
+ {
+ guc_array = guc_file_variables;
+ for (item = head; item; item = item->next, guc_array++)
+ {
+ free(guc_array->name);
+ free(guc_array->value);
+ free(guc_array->filename);
+ guc_array->sourceline = -1;
+ }
+
+ guc_file_variables = (ConfigFileVariable *) guc_realloc(FATAL, guc_file_variables, guc_array_size);
+ }
+
+ /*
+ * Apply guc config parameters to guc_file_variable
+ */
+ guc_array = guc_file_variables;
+ for (item = head; item; item = item->next, guc_array++)
+ {
+ guc_array->name = guc_strdup(FATAL, item->name);
+ guc_array->value = guc_strdup(FATAL, item->value);
+ guc_array->filename = guc_strdup(FATAL, item->filename);
+ guc_array->sourceline = item->sourceline;
+ }
+
+ /*
* Now apply the values from the config file.
*/
for (item = head; item; item = item->next)
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 492c093..73d5806 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -3678,6 +3678,22 @@ static struct config_generic **guc_variables;
/* Current number of variables contained in the vector */
static int num_guc_variables;
+/*
+ * Lookup of variables for pg_file_settings view.
+ * guc_file_variables is an array of length num_guc_file_variables.
+ */
+typedef struct ConfigFileVariable
+{
+ char *name;
+ char *value;
+ char *filename;
+ int sourceline;
+} ConfigFileVariable;
+static struct ConfigFileVariable *guc_file_variables;
+
+/* Number of file variables */
+static int num_guc_file_variables;
+
/* Vector capacity */
static int size_guc_variables;
@@ -8125,6 +8141,90 @@ show_all_settings(PG_FUNCTION_ARGS)
}
}
+/*
+ * show_all_file_settings
+ */
+
+#define NUM_PG_FILE_SETTINGS_ATTS 4
+
+Datum
+show_all_file_settings(PG_FUNCTION_ARGS)
+{
+ FuncCallContext *funcctx;
+ TupleDesc tupdesc;
+ int call_cntr;
+ int max_calls;
+ AttInMetadata *attinmeta;
+ MemoryContext oldcontext;
+
+ if (SRF_IS_FIRSTCALL())
+ {
+ funcctx = SRF_FIRSTCALL_INIT();
+
+ oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);
+
+ /*
+ * need a tuple descriptor representing NUM_PG_SETTINGS_ATTS columns
+ * of the appropriate types
+ */
+
+ tupdesc = CreateTemplateTupleDesc(NUM_PG_FILE_SETTINGS_ATTS, false);
+ TupleDescInitEntry(tupdesc, (AttrNumber) 1, "sourcefile",
+ TEXTOID, -1, 0);
+ TupleDescInitEntry(tupdesc, (AttrNumber) 2, "sourceline",
+ INT4OID, -1, 0);
+ TupleDescInitEntry(tupdesc, (AttrNumber) 3, "name",
+ TEXTOID, -1, 0);
+ TupleDescInitEntry(tupdesc, (AttrNumber) 4, "setting",
+ TEXTOID, -1, 0);
+
+ attinmeta = TupleDescGetAttInMetadata(tupdesc);
+ funcctx->attinmeta = attinmeta;
+ funcctx->max_calls = num_guc_file_variables;
+ MemoryContextSwitchTo(oldcontext);
+ }
+
+ funcctx = SRF_PERCALL_SETUP();
+
+ call_cntr = funcctx->call_cntr;
+ max_calls = funcctx->max_calls;
+ attinmeta = funcctx->attinmeta;
+
+ if (call_cntr < max_calls)
+ {
+ char *values[NUM_PG_FILE_SETTINGS_ATTS];
+ HeapTuple tuple;
+ Datum result;
+ ConfigFileVariable conf;
+ char buffer[8];
+
+ /* Check to avoid going past end of array */
+ if (call_cntr > num_guc_file_variables)
+ SRF_RETURN_DONE(funcctx);
+
+ conf = guc_file_variables[call_cntr];
+
+ values[0] = conf.filename;
+ pg_ltoa(conf.sourceline, buffer);
+ values[1] = buffer;
+ values[2] = conf.name;
+ values[3] = conf.value;
+
+ /* build a tuple */
+ tuple = BuildTupleFromCStrings(attinmeta, values);
+
+ /* make the tuple into a datum */
+ result = HeapTupleGetDatum(tuple);
+
+ SRF_RETURN_NEXT(funcctx, result);
+ }
+ else
+ {
+ SRF_RETURN_DONE(funcctx);
+ }
+
+}
+
static char *
_ShowOption(struct config_generic * record, bool use_units)
{
diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index d90ecc5..43bec57 100644
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.h
@@ -3050,6 +3050,8 @@ DATA(insert OID = 2078 ( set_config PGNSP PGUID 12 1 0 0 0 f f f f f f v 3 0 2
DESCR("SET X as a function");
DATA(insert OID = 2084 ( pg_show_all_settings PGNSP PGUID 12 1 1000 0 0 f f f f t t s 0 0 2249 "" "{25,25,25,25,25,25,25,25,25,25,25,1009,25,25,25,23}" "{o,o,o,o,o,o,o,o,o,o,o,o,o,o,o,o}" "{name,setting,unit,category,short_desc,extra_desc,context,vartype,source,min_val,max_val,enumvals,boot_val,reset_val,sourcefile,sourceline}" _null_ show_all_settings _null_ _null_ _null_ ));
DESCR("SHOW ALL as a function");
+DATA(insert OID = 3329 ( pg_show_all_file_settings PGNSP PGUID 12 1 1000 0 0 f f f f t t s 0 0 2249 "" "{25,23,25,25}" "{o,o,o,o}" "{sourcefile,sourceline,name,setting}" _null_ show_all_file_settings _null_ _null_ _null_ ));
+DESCR("show config file settings");
DATA(insert OID = 1371 ( pg_lock_status PGNSP PGUID 12 1 1000 0 0 f f f f t t v 0 0 2249 "" "{25,26,26,23,21,25,28,26,26,21,25,23,25,16,16}" "{o,o,o,o,o,o,o,o,o,o,o,o,o,o,o}" "{locktype,database,relation,page,tuple,virtualxid,transactionid,classid,objid,objsubid,virtualtransaction,pid,mode,granted,fastpath}" _null_ pg_lock_status _null_ _null_ _null_ ));
DESCR("view system lock information");
DATA(insert OID = 1065 ( pg_prepared_xact PGNSP PGUID 12 1 1000 0 0 f f f f t t v 0 0 2249 "" "{28,25,1184,26,26}" "{o,o,o,o,o}" "{transaction,gid,prepared,ownerid,dbid}" _null_ pg_prepared_xact _null_ _null_ _null_ ));
diff --git a/src/include/utils/builtins.h b/src/include/utils/builtins.h
index 33a453f..637561b 100644
--- a/src/include/utils/builtins.h
+++ b/src/include/utils/builtins.h
@@ -1098,6 +1098,7 @@ extern Datum quote_nullable(PG_FUNCTION_ARGS);
extern Datum show_config_by_name(PG_FUNCTION_ARGS);
extern Datum set_config_by_name(PG_FUNCTION_ARGS);
extern Datum show_all_settings(PG_FUNCTION_ARGS);
+extern Datum show_all_file_settings(PG_FUNCTION_ARGS);
/* lockfuncs.c */
extern Datum pg_lock_status(PG_FUNCTION_ARGS);