On Tue, Sep 08, 2020 at 02:51:26PM -0500, Justin Pryzby wrote:
> On Sat, Jul 18, 2020 at 03:15:32PM -0500, Justin Pryzby wrote:
> > Still waiting for feedback from a committer.
> 
> This patch has been waiting for input from a committer on the approach I've
> taken with the patches since March 10, so I'm planning to set to "Ready" - at
> least ready for senior review.

@cfbot: rebased
>From 2b56825516d4107e16946b4e25084e5cdf85ba18 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Mon, 16 Mar 2020 14:12:55 -0500
Subject: [PATCH v22 01/10] Document historic behavior of links to
 directories..

Backpatch to 9.5: pg_stat_file
---
 doc/src/sgml/func.sgml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 7ef2ec9972..1b67ef4be8 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -25917,7 +25917,7 @@ SELECT convert_from(pg_read_binary_file('file_in_utf8.txt'), 'UTF8');
         Returns a record containing the file's size, last access time stamp,
         last modification time stamp, last file status change time stamp (Unix
         platforms only), file creation time stamp (Windows only), and a flag
-        indicating if it is a directory.
+        indicating if it is a directory (or a symbolic link to a directory).
        </para>
        <para>
         This function is restricted to superusers by default, but other users
-- 
2.17.0

>From b50a250527cd4979f58d3f7af23ea69cbd200a0e Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Mon, 30 Mar 2020 18:59:16 -0500
Subject: [PATCH v22 02/10] pg_stat_file and pg_ls_dir_* to use lstat()..

pg_ls_dir_* will now skip (no longer show) symbolic links, same as other
non-regular file types, as we advertize we do since 8b6d94cf6.  That seems to
be the intented behavior, since irregular file types are 1) less portable; and,
2) we don't currently show a file's type except for "bool is_dir".

pg_stat_file will now 1) show metadata of links themselves, rather than their
target; and, 2) specifically, show links to directories with "is_dir=false";
and, 3) not error on broken symlinks.
---
 doc/src/sgml/func.sgml          | 2 +-
 src/backend/utils/adt/genfile.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 1b67ef4be8..7ef2ec9972 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -25917,7 +25917,7 @@ SELECT convert_from(pg_read_binary_file('file_in_utf8.txt'), 'UTF8');
         Returns a record containing the file's size, last access time stamp,
         last modification time stamp, last file status change time stamp (Unix
         platforms only), file creation time stamp (Windows only), and a flag
-        indicating if it is a directory (or a symbolic link to a directory).
+        indicating if it is a directory.
        </para>
        <para>
         This function is restricted to superusers by default, but other users
diff --git a/src/backend/utils/adt/genfile.c b/src/backend/utils/adt/genfile.c
index d34182a7b0..9f4927220b 100644
--- a/src/backend/utils/adt/genfile.c
+++ b/src/backend/utils/adt/genfile.c
@@ -406,7 +406,7 @@ pg_stat_file(PG_FUNCTION_ARGS)
 
 	filename = convert_and_check_filename(filename_t);
 
-	if (stat(filename, &fst) < 0)
+	if (lstat(filename, &fst) < 0)
 	{
 		if (missing_ok && errno == ENOENT)
 			PG_RETURN_NULL();
@@ -632,7 +632,7 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, bool missing_ok)
 
 		/* Get the file info */
 		snprintf(path, sizeof(path), "%s/%s", dir, de->d_name);
-		if (stat(path, &attrib) < 0)
+		if (lstat(path, &attrib) < 0)
 		{
 			/* Ignore concurrently-deleted files, else complain */
 			if (errno == ENOENT)
-- 
2.17.0

>From 55f30341dfef59ca3015535b9ae62a7a40be083b Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Tue, 17 Mar 2020 13:16:24 -0500
Subject: [PATCH v22 03/10] Add tests on pg_ls_dir before changing it

---
 src/test/regress/expected/misc_functions.out | 18 ++++++++++++++++++
 src/test/regress/sql/misc_functions.sql      |  5 +++++
 2 files changed, 23 insertions(+)

diff --git a/src/test/regress/expected/misc_functions.out b/src/test/regress/expected/misc_functions.out
index d3acb98d04..2e87c548eb 100644
--- a/src/test/regress/expected/misc_functions.out
+++ b/src/test/regress/expected/misc_functions.out
@@ -201,6 +201,24 @@ select count(*) > 0 from
  t
 (1 row)
 
+select * from (select pg_ls_dir('.', false, true) as name) as ls where ls.name='.'; -- include_dot_dirs=true
+ name 
+------
+ .
+(1 row)
+
+select * from (select pg_ls_dir('.', false, false) as name) as ls where ls.name='.'; -- include_dot_dirs=false
+ name 
+------
+(0 rows)
+
+select pg_ls_dir('does not exist', true, false); -- ok with missingok=true
+ pg_ls_dir 
+-----------
+(0 rows)
+
+select pg_ls_dir('does not exist'); -- fails with missingok=false
+ERROR:  could not open directory "does not exist": No such file or directory
 --
 -- Test adding a support function to a subject function
 --
diff --git a/src/test/regress/sql/misc_functions.sql b/src/test/regress/sql/misc_functions.sql
index 094e8f8296..f6857ad177 100644
--- a/src/test/regress/sql/misc_functions.sql
+++ b/src/test/regress/sql/misc_functions.sql
@@ -60,6 +60,11 @@ select count(*) > 0 from
    where spcname = 'pg_default') pts
   join pg_database db on pts.pts = db.oid;
 
+select * from (select pg_ls_dir('.', false, true) as name) as ls where ls.name='.'; -- include_dot_dirs=true
+select * from (select pg_ls_dir('.', false, false) as name) as ls where ls.name='.'; -- include_dot_dirs=false
+select pg_ls_dir('does not exist', true, false); -- ok with missingok=true
+select pg_ls_dir('does not exist'); -- fails with missingok=false
+
 --
 -- Test adding a support function to a subject function
 --
-- 
2.17.0

>From 5e3757a2d733a4660a654a04d24559605cde464f Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Mon, 9 Mar 2020 22:40:24 -0500
Subject: [PATCH v22 04/10] Add pg_ls_dir_metadata to list a dir with file
 metadata..

Generalize pg_ls_dir_files and retire pg_ls_dir

Need catversion bumped?
---
 doc/src/sgml/func.sgml                       |  21 ++
 src/backend/catalog/system_views.sql         |   1 +
 src/backend/utils/adt/genfile.c              | 229 +++++++++++--------
 src/include/catalog/pg_proc.dat              |  12 +
 src/test/regress/expected/misc_functions.out |  24 ++
 src/test/regress/input/tablespace.source     |   5 +
 src/test/regress/output/tablespace.source    |   8 +
 src/test/regress/sql/misc_functions.sql      |  11 +
 8 files changed, 220 insertions(+), 91 deletions(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 7ef2ec9972..34c92903d8 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -25747,6 +25747,27 @@ SELECT pg_size_pretty(sum(pg_relation_size(relid))) AS total_size
        </para></entry>
       </row>
 
+      <row>
+       <entry role="func_table_entry"><para role="func_signature">
+        <indexterm>
+         <primary>pg_ls_dir_metadata</primary>
+        </indexterm>
+        <function>pg_ls_dir_metadata</function> ( <parameter>dirname</parameter> <type>text</type>
+        <optional>, <parameter>missing_ok</parameter> <type>boolean</type>,
+        <parameter>include_dot_dirs</parameter> <type>boolean</type>] </optional> )
+        <returnvalue>setof record</returnvalue>
+        ( <parameter>name</parameter> <type>text</type>,
+        <parameter>size</parameter> <type>bigint</type>,
+        <parameter>modification</parameter> <type>timestamp with time zone</type> )
+       </para>
+       <para>
+        For each file in the specified directory, list the file and its
+        metadata.
+        Restricted to superusers by default, but other users can be granted
+        EXECUTE to run the function.
+       </para></entry>
+      </row>
+
       <row>
        <entry role="func_table_entry"><para role="func_signature">
         <indexterm>
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index c6dd084fbc..169602c1b6 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -1509,6 +1509,7 @@ REVOKE EXECUTE ON FUNCTION pg_stat_file(text,boolean) FROM public;
 
 REVOKE EXECUTE ON FUNCTION pg_ls_dir(text) FROM public;
 REVOKE EXECUTE ON FUNCTION pg_ls_dir(text,boolean,boolean) FROM public;
+REVOKE EXECUTE ON FUNCTION pg_ls_dir_metadata(text,boolean,boolean) FROM public;
 
 --
 -- We also set up some things as accessible to standard roles.
diff --git a/src/backend/utils/adt/genfile.c b/src/backend/utils/adt/genfile.c
index 9f4927220b..054b8d4b1a 100644
--- a/src/backend/utils/adt/genfile.c
+++ b/src/backend/utils/adt/genfile.c
@@ -36,6 +36,21 @@
 #include "utils/syscache.h"
 #include "utils/timestamp.h"
 
+static Datum pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags);
+
+#define	LS_DIR_ISDIR				(1<<0) /* Show column: isdir */
+#define	LS_DIR_METADATA				(1<<1) /* Show columns: mtime, size */
+#define	LS_DIR_MISSING_OK			(1<<2) /* Ignore ENOENT if the toplevel dir is missing */
+#define	LS_DIR_SKIP_DOT_DIRS		(1<<3) /* Do not show . or .. */
+#define	LS_DIR_SKIP_HIDDEN			(1<<4) /* Do not show anything begining with . */
+#define	LS_DIR_SKIP_DIRS			(1<<5) /* Do not show directories */
+#define	LS_DIR_SKIP_SPECIAL			(1<<6) /* Do not show special file types */
+
+/*
+ * Shortcut for the historic behavior of the pg_ls_* functions (not including
+ * pg_ls_dir, which skips different files and doesn't show metadata.
+ */
+#define LS_DIR_HISTORIC				(LS_DIR_SKIP_DIRS | LS_DIR_SKIP_HIDDEN | LS_DIR_SKIP_SPECIAL | LS_DIR_METADATA)
 
 /*
  * Convert a "text" filename argument to C string, and check it's allowable.
@@ -449,6 +464,11 @@ pg_stat_file(PG_FUNCTION_ARGS)
 	values[4] = TimestampTzGetDatum(time_t_to_timestamptz(fst.st_ctime));
 #endif
 	values[5] = BoolGetDatum(S_ISDIR(fst.st_mode));
+#ifdef WIN32
+	/* Links should have isdir=false */
+	if (pgwin32_is_junction(filename))
+		values[5] = BoolGetDatum(false);
+#endif
 
 	tuple = heap_form_tuple(tupdesc, values, isnull);
 
@@ -476,79 +496,9 @@ pg_stat_file_1arg(PG_FUNCTION_ARGS)
 Datum
 pg_ls_dir(PG_FUNCTION_ARGS)
 {
-	ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo;
-	char	   *location;
-	bool		missing_ok = false;
-	bool		include_dot_dirs = false;
-	bool		randomAccess;
-	TupleDesc	tupdesc;
-	Tuplestorestate *tupstore;
-	DIR		   *dirdesc;
-	struct dirent *de;
-	MemoryContext oldcontext;
-
-	location = convert_and_check_filename(PG_GETARG_TEXT_PP(0));
-
-	/* check the optional arguments */
-	if (PG_NARGS() == 3)
-	{
-		if (!PG_ARGISNULL(1))
-			missing_ok = PG_GETARG_BOOL(1);
-		if (!PG_ARGISNULL(2))
-			include_dot_dirs = PG_GETARG_BOOL(2);
-	}
-
-	/* check to see if caller supports us returning a tuplestore */
-	if (rsinfo == NULL || !IsA(rsinfo, ReturnSetInfo))
-		ereport(ERROR,
-				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-				 errmsg("set-valued function called in context that cannot accept a set")));
-	if (!(rsinfo->allowedModes & SFRM_Materialize))
-		ereport(ERROR,
-				(errcode(ERRCODE_SYNTAX_ERROR),
-				 errmsg("materialize mode required, but it is not allowed in this context")));
-
-	/* The tupdesc and tuplestore must be created in ecxt_per_query_memory */
-	oldcontext = MemoryContextSwitchTo(rsinfo->econtext->ecxt_per_query_memory);
-
-	tupdesc = CreateTemplateTupleDesc(1);
-	TupleDescInitEntry(tupdesc, (AttrNumber) 1, "pg_ls_dir", TEXTOID, -1, 0);
-
-	randomAccess = (rsinfo->allowedModes & SFRM_Materialize_Random) != 0;
-	tupstore = tuplestore_begin_heap(randomAccess, false, work_mem);
-	rsinfo->returnMode = SFRM_Materialize;
-	rsinfo->setResult = tupstore;
-	rsinfo->setDesc = tupdesc;
-
-	MemoryContextSwitchTo(oldcontext);
-
-	dirdesc = AllocateDir(location);
-	if (!dirdesc)
-	{
-		/* Return empty tuplestore if appropriate */
-		if (missing_ok && errno == ENOENT)
-			return (Datum) 0;
-		/* Otherwise, we can let ReadDir() throw the error */
-	}
-
-	while ((de = ReadDir(dirdesc, location)) != NULL)
-	{
-		Datum		values[1];
-		bool		nulls[1];
-
-		if (!include_dot_dirs &&
-			(strcmp(de->d_name, ".") == 0 ||
-			 strcmp(de->d_name, "..") == 0))
-			continue;
-
-		values[0] = CStringGetTextDatum(de->d_name);
-		nulls[0] = false;
-
-		tuplestore_putvalues(tupstore, tupdesc, values, nulls);
-	}
-
-	FreeDir(dirdesc);
-	return (Datum) 0;
+	text	*filename_t = PG_GETARG_TEXT_PP(0);
+	char	*filename = convert_and_check_filename(filename_t);
+	return pg_ls_dir_files(fcinfo, filename, LS_DIR_SKIP_DOT_DIRS);
 }
 
 /*
@@ -561,7 +511,9 @@ pg_ls_dir(PG_FUNCTION_ARGS)
 Datum
 pg_ls_dir_1arg(PG_FUNCTION_ARGS)
 {
-	return pg_ls_dir(fcinfo);
+	text	*filename_t = PG_GETARG_TEXT_PP(0);
+	char	*filename = convert_and_check_filename(filename_t);
+	return pg_ls_dir_files(fcinfo, filename, LS_DIR_SKIP_DOT_DIRS);
 }
 
 /*
@@ -571,7 +523,7 @@ pg_ls_dir_1arg(PG_FUNCTION_ARGS)
  * Other unreadable-directory cases throw an error.
  */
 static Datum
-pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, bool missing_ok)
+pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags)
 {
 	ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo;
 	bool		randomAccess;
@@ -580,6 +532,32 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, bool missing_ok)
 	DIR		   *dirdesc;
 	struct dirent *de;
 	MemoryContext oldcontext;
+	TypeFuncClass	tuptype ;
+
+	/* isdir depends on metadata */
+	Assert(!(flags&LS_DIR_ISDIR) || (flags&LS_DIR_METADATA));
+	/* Unreasonable to show isdir and skip dirs */
+	Assert(!(flags&LS_DIR_ISDIR) || !(flags&LS_DIR_SKIP_DIRS));
+
+	/* check the optional arguments */
+	if (PG_NARGS() == 3)
+	{
+		if (!PG_ARGISNULL(1))
+		{
+			if (PG_GETARG_BOOL(1))
+				flags |= LS_DIR_MISSING_OK;
+			else
+				flags &= ~LS_DIR_MISSING_OK;
+		}
+
+		if (!PG_ARGISNULL(2))
+		{
+			if (PG_GETARG_BOOL(2))
+				flags &= ~LS_DIR_SKIP_DOT_DIRS;
+			else
+				flags |= LS_DIR_SKIP_DOT_DIRS;
+		}
+	}
 
 	/* check to see if caller supports us returning a tuplestore */
 	if (rsinfo == NULL || !IsA(rsinfo, ReturnSetInfo))
@@ -594,8 +572,20 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, bool missing_ok)
 	/* The tupdesc and tuplestore must be created in ecxt_per_query_memory */
 	oldcontext = MemoryContextSwitchTo(rsinfo->econtext->ecxt_per_query_memory);
 
-	if (get_call_result_type(fcinfo, NULL, &tupdesc) != TYPEFUNC_COMPOSITE)
-		elog(ERROR, "return type must be a row type");
+	tuptype = get_call_result_type(fcinfo, NULL, &tupdesc);
+	if (flags & LS_DIR_METADATA)
+	{
+		if (tuptype != TYPEFUNC_COMPOSITE)
+			elog(ERROR, "return type must be a row type");
+	}
+	else
+	{
+		/* pg_ls_dir returns a simple scalar */
+		if (tuptype != TYPEFUNC_SCALAR)
+			elog(ERROR, "return type must be a scalar type");
+		tupdesc = CreateTemplateTupleDesc(1);
+		TupleDescInitEntry(tupdesc, (AttrNumber) 1, "column", TEXTOID, -1, 0);
+	}
 
 	randomAccess = (rsinfo->allowedModes & SFRM_Materialize_Random) != 0;
 	tupstore = tuplestore_begin_heap(randomAccess, false, work_mem);
@@ -614,20 +604,27 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, bool missing_ok)
 	if (!dirdesc)
 	{
 		/* Return empty tuplestore if appropriate */
-		if (missing_ok && errno == ENOENT)
+		if (flags & LS_DIR_MISSING_OK && errno == ENOENT)
 			return (Datum) 0;
 		/* Otherwise, we can let ReadDir() throw the error */
 	}
 
 	while ((de = ReadDir(dirdesc, dir)) != NULL)
 	{
-		Datum		values[3];
-		bool		nulls[3];
+		Datum		values[4];
+		bool		nulls[4];
 		char		path[MAXPGPATH * 2];
 		struct stat attrib;
 
-		/* Skip hidden files */
-		if (de->d_name[0] == '.')
+		/* Skip dot dirs? */
+		if (flags & LS_DIR_SKIP_DOT_DIRS &&
+			(strcmp(de->d_name, ".") == 0 ||
+			 strcmp(de->d_name, "..") == 0))
+			continue;
+
+		/* Skip hidden files? */
+		if (flags & LS_DIR_SKIP_HIDDEN &&
+			de->d_name[0] == '.')
 			continue;
 
 		/* Get the file info */
@@ -642,13 +639,34 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, bool missing_ok)
 					 errmsg("could not stat file \"%s\": %m", path)));
 		}
 
-		/* Ignore anything but regular files */
-		if (!S_ISREG(attrib.st_mode))
-			continue;
+		/* Skip dirs or special files? */
+		if (S_ISDIR(attrib.st_mode))
+		{
+			if (flags & LS_DIR_SKIP_DIRS)
+				continue;
+		}
+		else if (!S_ISREG(attrib.st_mode))
+		{
+			if (flags & LS_DIR_SKIP_SPECIAL)
+				continue;
+		}
 
 		values[0] = CStringGetTextDatum(de->d_name);
-		values[1] = Int64GetDatum((int64) attrib.st_size);
-		values[2] = TimestampTzGetDatum(time_t_to_timestamptz(attrib.st_mtime));
+		if (flags & LS_DIR_METADATA)
+		{
+			values[1] = Int64GetDatum((int64) attrib.st_size);
+			values[2] = TimestampTzGetDatum(time_t_to_timestamptz(attrib.st_mtime));
+			if (flags & LS_DIR_ISDIR)
+			{
+				values[3] = BoolGetDatum(S_ISDIR(attrib.st_mode));
+#ifdef WIN32
+				/* Links should have isdir=false */
+				if (pgwin32_is_junction(path))
+					values[3] = BoolGetDatum(false);
+#endif
+			}
+		}
+
 		memset(nulls, 0, sizeof(nulls));
 
 		tuplestore_putvalues(tupstore, tupdesc, values, nulls);
@@ -662,14 +680,14 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, bool missing_ok)
 Datum
 pg_ls_logdir(PG_FUNCTION_ARGS)
 {
-	return pg_ls_dir_files(fcinfo, Log_directory, false);
+	return pg_ls_dir_files(fcinfo, Log_directory, LS_DIR_HISTORIC);
 }
 
 /* Function to return the list of files in the WAL directory */
 Datum
 pg_ls_waldir(PG_FUNCTION_ARGS)
 {
-	return pg_ls_dir_files(fcinfo, XLOGDIR, false);
+	return pg_ls_dir_files(fcinfo, XLOGDIR, LS_DIR_HISTORIC);
 }
 
 /*
@@ -687,7 +705,8 @@ pg_ls_tmpdir(FunctionCallInfo fcinfo, Oid tblspc)
 						tblspc)));
 
 	TempTablespacePath(path, tblspc);
-	return pg_ls_dir_files(fcinfo, path, true);
+	return pg_ls_dir_files(fcinfo, path,
+			LS_DIR_HISTORIC | LS_DIR_MISSING_OK);
 }
 
 /*
@@ -716,5 +735,33 @@ pg_ls_tmpdir_1arg(PG_FUNCTION_ARGS)
 Datum
 pg_ls_archive_statusdir(PG_FUNCTION_ARGS)
 {
-	return pg_ls_dir_files(fcinfo, XLOGDIR "/archive_status", true);
+	return pg_ls_dir_files(fcinfo, XLOGDIR "/archive_status",
+			LS_DIR_HISTORIC | LS_DIR_MISSING_OK);
+}
+
+/*
+ * Function to return the list of files and metadata in an arbitrary directory.
+ */
+Datum
+pg_ls_dir_metadata(PG_FUNCTION_ARGS)
+{
+	char	*dirname = convert_and_check_filename(PG_GETARG_TEXT_PP(0));
+
+	return pg_ls_dir_files(fcinfo, dirname,
+			LS_DIR_METADATA | LS_DIR_SKIP_SPECIAL | LS_DIR_ISDIR);
+}
+
+/*
+ * Function to return the list of files and metadata in an arbitrary directory.
+ * note: this wrapper is necessary to pass the sanity check in opr_sanity,
+ * which checks that all built-in functions that share the implementing C
+ * function take the same number of arguments.
+ */
+Datum
+pg_ls_dir_metadata_1arg(PG_FUNCTION_ARGS)
+{
+	char	*dirname = convert_and_check_filename(PG_GETARG_TEXT_PP(0));
+
+	return pg_ls_dir_files(fcinfo, dirname,
+			LS_DIR_METADATA | LS_DIR_SKIP_SPECIAL | LS_DIR_ISDIR);
 }
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 24ec2cfed6..02b1436d83 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -10964,6 +10964,18 @@
   proallargtypes => '{regclass,text,text,int8}', proargmodes => '{i,i,o,o}',
   proargnames => '{relation,fork,path,failed_block_num}',
   prosrc => 'pg_relation_check_pages' },
+{ oid => '9979', descr => 'list directory with metadata',
+  proname => 'pg_ls_dir_metadata', procost => '10', prorows => '20', proretset => 't',
+  provolatile => 'v', prorettype => 'record', proargtypes => 'text bool bool',
+  proallargtypes => '{text,bool,bool,text,int8,timestamptz,bool}', proargmodes => '{i,i,i,o,o,o,o}',
+  proargnames => '{dirname,missing_ok,include_dot_dirs,filename,size,modification,isdir}',
+  prosrc => 'pg_ls_dir_metadata' },
+{ oid => '9980', descr => 'list directory with metadata',
+  proname => 'pg_ls_dir_metadata', procost => '10', prorows => '20', proretset => 't',
+  provolatile => 'v', prorettype => 'record', proargtypes => 'text',
+  proallargtypes => '{text,text,int8,timestamptz,bool}', proargmodes => '{i,o,o,o,o}',
+  proargnames => '{dirname,filename,size,modification,isdir}',
+  prosrc => 'pg_ls_dir_metadata_1arg' },
 
 # hash partitioning constraint function
 { oid => '5028', descr => 'hash partition CHECK constraint',
diff --git a/src/test/regress/expected/misc_functions.out b/src/test/regress/expected/misc_functions.out
index 2e87c548eb..20bfe71822 100644
--- a/src/test/regress/expected/misc_functions.out
+++ b/src/test/regress/expected/misc_functions.out
@@ -219,6 +219,30 @@ select pg_ls_dir('does not exist', true, false); -- ok with missingok=true
 
 select pg_ls_dir('does not exist'); -- fails with missingok=false
 ERROR:  could not open directory "does not exist": No such file or directory
+-- This tests the missing_ok parameter, which causes pg_ls_tmpdir to succeed even if the tmpdir doesn't exist yet
+-- The name='' condition is never true, so the function runs to completion but returns zero rows.
+select * from pg_ls_tmpdir() where name='Does not exist';
+ name | size | modification 
+------+------+--------------
+(0 rows)
+
+select filename, isdir from pg_ls_dir_metadata('.') where filename='.';
+ filename | isdir 
+----------+-------
+ .        | t
+(1 row)
+
+select filename, isdir from pg_ls_dir_metadata('.', false, false) where filename='.'; -- include_dot_dirs=false
+ filename | isdir 
+----------+-------
+(0 rows)
+
+-- Check that expected columns are present
+select * from pg_ls_dir_metadata('.') limit 0;
+ filename | size | modification | isdir 
+----------+------+--------------+-------
+(0 rows)
+
 --
 -- Test adding a support function to a subject function
 --
diff --git a/src/test/regress/input/tablespace.source b/src/test/regress/input/tablespace.source
index a5f61a35dc..0b9cfe615e 100644
--- a/src/test/regress/input/tablespace.source
+++ b/src/test/regress/input/tablespace.source
@@ -11,6 +11,11 @@ DROP TABLESPACE regress_tblspacewith;
 -- create a tablespace we can use
 CREATE TABLESPACE regress_tblspace LOCATION '@testtablespace@';
 
+-- This tests the missing_ok parameter, which causes pg_ls_tmpdir to succeed even if the tmpdir doesn't exist yet
+-- The name='' condition is never true, so the function runs to completion but returns zero rows.
+-- The query is written to ERROR if the tablespace doesn't exist, rather than silently failing to call pg_ls_tmpdir()
+SELECT c.* FROM (SELECT oid FROM pg_tablespace b WHERE b.spcname='regress_tblspace' UNION SELECT 0 ORDER BY 1 DESC LIMIT 1) AS b , pg_ls_tmpdir(oid) AS c WHERE c.name='Does not exist';
+
 -- try setting and resetting some properties for the new tablespace
 ALTER TABLESPACE regress_tblspace SET (random_page_cost = 1.0, seq_page_cost = 1.1);
 ALTER TABLESPACE regress_tblspace SET (some_nonexistent_parameter = true);  -- fail
diff --git a/src/test/regress/output/tablespace.source b/src/test/regress/output/tablespace.source
index 162b591b31..a42714bf40 100644
--- a/src/test/regress/output/tablespace.source
+++ b/src/test/regress/output/tablespace.source
@@ -13,6 +13,14 @@ SELECT spcoptions FROM pg_tablespace WHERE spcname = 'regress_tblspacewith';
 DROP TABLESPACE regress_tblspacewith;
 -- create a tablespace we can use
 CREATE TABLESPACE regress_tblspace LOCATION '@testtablespace@';
+-- This tests the missing_ok parameter, which causes pg_ls_tmpdir to succeed even if the tmpdir doesn't exist yet
+-- The name='' condition is never true, so the function runs to completion but returns zero rows.
+-- The query is written to ERROR if the tablespace doesn't exist, rather than silently failing to call pg_ls_tmpdir()
+SELECT c.* FROM (SELECT oid FROM pg_tablespace b WHERE b.spcname='regress_tblspace' UNION SELECT 0 ORDER BY 1 DESC LIMIT 1) AS b , pg_ls_tmpdir(oid) AS c WHERE c.name='Does not exist';
+ name | size | modification 
+------+------+--------------
+(0 rows)
+
 -- try setting and resetting some properties for the new tablespace
 ALTER TABLESPACE regress_tblspace SET (random_page_cost = 1.0, seq_page_cost = 1.1);
 ALTER TABLESPACE regress_tblspace SET (some_nonexistent_parameter = true);  -- fail
diff --git a/src/test/regress/sql/misc_functions.sql b/src/test/regress/sql/misc_functions.sql
index f6857ad177..68e2bc6586 100644
--- a/src/test/regress/sql/misc_functions.sql
+++ b/src/test/regress/sql/misc_functions.sql
@@ -65,6 +65,17 @@ select * from (select pg_ls_dir('.', false, false) as name) as ls where ls.name=
 select pg_ls_dir('does not exist', true, false); -- ok with missingok=true
 select pg_ls_dir('does not exist'); -- fails with missingok=false
 
+-- This tests the missing_ok parameter, which causes pg_ls_tmpdir to succeed even if the tmpdir doesn't exist yet
+-- The name='' condition is never true, so the function runs to completion but returns zero rows.
+select * from pg_ls_tmpdir() where name='Does not exist';
+
+select filename, isdir from pg_ls_dir_metadata('.') where filename='.';
+
+select filename, isdir from pg_ls_dir_metadata('.', false, false) where filename='.'; -- include_dot_dirs=false
+
+-- Check that expected columns are present
+select * from pg_ls_dir_metadata('.') limit 0;
+
 --
 -- Test adding a support function to a subject function
 --
-- 
2.17.0

>From 6316059c7fc81b1d7bc93e076cd60c572b4e2c30 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Sun, 8 Mar 2020 22:57:54 -0500
Subject: [PATCH v22 05/10] pg_ls_tmpdir to show directories and "isdir"
 argument..

similar to pg_stat_file().

It's worth breaking the function's return type, since core postgres creates
"shared filesets" underneath the temp dirs, and it's unreasonable to not show
them here, and the alternative query to show them is unreasaonbly complicated.

See following commit which also adds these columns to the other pg_ls_*
functions.  Although I don't think it matters that they're easily UNIONed, it'd
still make great sense if they returned the same columns.

Need catversion bump
---
 doc/src/sgml/func.sgml                       | 17 +++++++++--------
 src/backend/utils/adt/genfile.c              |  4 ++--
 src/include/catalog/pg_proc.dat              |  8 ++++----
 src/test/regress/expected/misc_functions.out |  4 ++--
 src/test/regress/output/tablespace.source    |  4 ++--
 5 files changed, 19 insertions(+), 18 deletions(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 34c92903d8..4308a50ab2 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -25849,16 +25849,17 @@ SELECT pg_size_pretty(sum(pg_relation_size(relid))) AS total_size
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
-        <parameter>modification</parameter> <type>timestamp with time zone</type> )
+        <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
-        Returns the name, size, and last modification time (mtime) of each
-        ordinary file in the temporary file directory for the
-        specified <parameter>tablespace</parameter>.
-        If <parameter>tablespace</parameter> is not provided,
-        the <literal>pg_default</literal> tablespace is examined.  Filenames
-        beginning with a dot, directories, and other special files are
-        excluded.
+        For each file in the temporary directory within the given
+        <parameter>tablespace</parameter>, return the file's name, size, last
+        modification time (mtime) and a boolean indicating if the file is a directory.
+        Directories are used for temporary files shared by parallel processes.
+        If <parameter>tablespace</parameter> is not provided, the
+        <literal>pg_default</literal> tablespace is examined.
+        Filenames beginning with a dot and special file types are excluded.
        </para>
        <para>
         This function is restricted to superusers and members of
diff --git a/src/backend/utils/adt/genfile.c b/src/backend/utils/adt/genfile.c
index 054b8d4b1a..454348a5e3 100644
--- a/src/backend/utils/adt/genfile.c
+++ b/src/backend/utils/adt/genfile.c
@@ -517,7 +517,7 @@ pg_ls_dir_1arg(PG_FUNCTION_ARGS)
 }
 
 /*
- * Generic function to return a directory listing of files.
+ * Generic function to return a directory listing of files (and optionally dirs).
  *
  * If the directory isn't there, silently return an empty set if missing_ok.
  * Other unreadable-directory cases throw an error.
@@ -706,7 +706,7 @@ pg_ls_tmpdir(FunctionCallInfo fcinfo, Oid tblspc)
 
 	TempTablespacePath(path, tblspc);
 	return pg_ls_dir_files(fcinfo, path,
-			LS_DIR_HISTORIC | LS_DIR_MISSING_OK);
+			LS_DIR_SKIP_HIDDEN | LS_DIR_SKIP_SPECIAL | LS_DIR_ISDIR | LS_DIR_METADATA | LS_DIR_MISSING_OK);
 }
 
 /*
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 02b1436d83..149dfacf4b 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -10949,13 +10949,13 @@
 { oid => '5029', descr => 'list files in the pgsql_tmp directory',
   proname => 'pg_ls_tmpdir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => '',
-  proallargtypes => '{text,int8,timestamptz}', proargmodes => '{o,o,o}',
-  proargnames => '{name,size,modification}', prosrc => 'pg_ls_tmpdir_noargs' },
+  proallargtypes => '{text,int8,timestamptz,bool}', proargmodes => '{o,o,o,o}',
+  proargnames => '{name,size,modification,isdir}', prosrc => 'pg_ls_tmpdir_noargs' },
 { oid => '5030', descr => 'list files in the pgsql_tmp directory',
   proname => 'pg_ls_tmpdir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => 'oid',
-  proallargtypes => '{oid,text,int8,timestamptz}', proargmodes => '{i,o,o,o}',
-  proargnames => '{tablespace,name,size,modification}',
+  proallargtypes => '{oid,text,int8,timestamptz,bool}', proargmodes => '{i,o,o,o,o}',
+  proargnames => '{tablespace,name,size,modification,isdir}',
   prosrc => 'pg_ls_tmpdir_1arg' },
 { oid => '9147', descr => 'check pages of a relation',
   proname => 'pg_relation_check_pages', procost => '10000', prorows => '20',
diff --git a/src/test/regress/expected/misc_functions.out b/src/test/regress/expected/misc_functions.out
index 20bfe71822..0144f611c2 100644
--- a/src/test/regress/expected/misc_functions.out
+++ b/src/test/regress/expected/misc_functions.out
@@ -222,8 +222,8 @@ ERROR:  could not open directory "does not exist": No such file or directory
 -- This tests the missing_ok parameter, which causes pg_ls_tmpdir to succeed even if the tmpdir doesn't exist yet
 -- The name='' condition is never true, so the function runs to completion but returns zero rows.
 select * from pg_ls_tmpdir() where name='Does not exist';
- name | size | modification 
-------+------+--------------
+ name | size | modification | isdir 
+------+------+--------------+-------
 (0 rows)
 
 select filename, isdir from pg_ls_dir_metadata('.') where filename='.';
diff --git a/src/test/regress/output/tablespace.source b/src/test/regress/output/tablespace.source
index a42714bf40..1c88e914e3 100644
--- a/src/test/regress/output/tablespace.source
+++ b/src/test/regress/output/tablespace.source
@@ -17,8 +17,8 @@ CREATE TABLESPACE regress_tblspace LOCATION '@testtablespace@';
 -- The name='' condition is never true, so the function runs to completion but returns zero rows.
 -- The query is written to ERROR if the tablespace doesn't exist, rather than silently failing to call pg_ls_tmpdir()
 SELECT c.* FROM (SELECT oid FROM pg_tablespace b WHERE b.spcname='regress_tblspace' UNION SELECT 0 ORDER BY 1 DESC LIMIT 1) AS b , pg_ls_tmpdir(oid) AS c WHERE c.name='Does not exist';
- name | size | modification 
-------+------+--------------
+ name | size | modification | isdir 
+------+------+--------------+-------
 (0 rows)
 
 -- try setting and resetting some properties for the new tablespace
-- 
2.17.0

>From 6ba1a38e3357ff92836a27bf2027741950ac69c0 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Mon, 9 Mar 2020 01:00:42 -0500
Subject: [PATCH v22 06/10] pg_ls_*dir to show directories and "isdir" column..

pg_ls_logdir, pg_ls_waldir, pg_ls_archive_statusdir

Need catversion bump
---
 doc/src/sgml/func.sgml                       | 36 ++++++++++++--------
 src/backend/utils/adt/genfile.c              | 15 ++++----
 src/include/catalog/pg_proc.dat              | 12 +++----
 src/test/regress/expected/misc_functions.out |  4 +--
 4 files changed, 35 insertions(+), 32 deletions(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 4308a50ab2..f7ccf68ff4 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -25758,7 +25758,8 @@ SELECT pg_size_pretty(sum(pg_relation_size(relid))) AS total_size
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
-        <parameter>modification</parameter> <type>timestamp with time zone</type> )
+        <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
         For each file in the specified directory, list the file and its
@@ -25777,12 +25778,14 @@ SELECT pg_size_pretty(sum(pg_relation_size(relid))) AS total_size
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
-        <parameter>modification</parameter> <type>timestamp with time zone</type> )
+        <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
-        Returns the name, size, and last modification time (mtime) of each
-        ordinary file in the server's log directory.  Filenames beginning with
-        a dot, directories, and other special files are excluded.
+        For each file in the server's log directory,
+        return the file's name, size, last modification time (mtime), and a boolean
+        indicating if the file is a directory.
+        Filenames beginning with a dot and special file types are excluded.
        </para>
        <para>
         This function is restricted to superusers and members of
@@ -25800,13 +25803,14 @@ SELECT pg_size_pretty(sum(pg_relation_size(relid))) AS total_size
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
-        <parameter>modification</parameter> <type>timestamp with time zone</type> )
+        <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
-        Returns the name, size, and last modification time (mtime) of each
-        ordinary file in the server's write-ahead log (WAL) directory.
-        Filenames beginning with a dot, directories, and other special files
-        are excluded.
+        For each file in the server's write-ahead log (WAL) directory, list the
+        file's name, size, last modification time (mtime), and a boolean
+        indicating if the file is a directory.
+        Filenames beginning with a dot and special files types are excluded.
        </para>
        <para>
         This function is restricted to superusers and members of
@@ -25824,13 +25828,15 @@ SELECT pg_size_pretty(sum(pg_relation_size(relid))) AS total_size
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
-        <parameter>modification</parameter> <type>timestamp with time zone</type> )
+        <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
-        Returns the name, size, and last modification time (mtime) of each
-        ordinary file in the server's WAL archive status directory
-        (<filename>pg_wal/archive_status</filename>).  Filenames beginning
-        with a dot, directories, and other special files are excluded.
+        For each file in the server's WAL archive status directory
+        (<filename>pg_wal/archive_status</filename>), list the file's
+        name, size, last modification time (mtime), and a boolean indicating if
+        the file is a directory.
+        Filenames beginning with a dot and special file types are excluded.
        </para>
        <para>
         This function is restricted to superusers and members of
diff --git a/src/backend/utils/adt/genfile.c b/src/backend/utils/adt/genfile.c
index 454348a5e3..a61ddfc451 100644
--- a/src/backend/utils/adt/genfile.c
+++ b/src/backend/utils/adt/genfile.c
@@ -46,11 +46,8 @@ static Datum pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags
 #define	LS_DIR_SKIP_DIRS			(1<<5) /* Do not show directories */
 #define	LS_DIR_SKIP_SPECIAL			(1<<6) /* Do not show special file types */
 
-/*
- * Shortcut for the historic behavior of the pg_ls_* functions (not including
- * pg_ls_dir, which skips different files and doesn't show metadata.
- */
-#define LS_DIR_HISTORIC				(LS_DIR_SKIP_DIRS | LS_DIR_SKIP_HIDDEN | LS_DIR_SKIP_SPECIAL | LS_DIR_METADATA)
+/* Shortcut for common behavior */
+#define LS_DIR_COMMON				(LS_DIR_SKIP_HIDDEN | LS_DIR_SKIP_SPECIAL | LS_DIR_METADATA)
 
 /*
  * Convert a "text" filename argument to C string, and check it's allowable.
@@ -680,14 +677,14 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags)
 Datum
 pg_ls_logdir(PG_FUNCTION_ARGS)
 {
-	return pg_ls_dir_files(fcinfo, Log_directory, LS_DIR_HISTORIC);
+	return pg_ls_dir_files(fcinfo, Log_directory, LS_DIR_COMMON);
 }
 
 /* Function to return the list of files in the WAL directory */
 Datum
 pg_ls_waldir(PG_FUNCTION_ARGS)
 {
-	return pg_ls_dir_files(fcinfo, XLOGDIR, LS_DIR_HISTORIC);
+	return pg_ls_dir_files(fcinfo, XLOGDIR, LS_DIR_COMMON);
 }
 
 /*
@@ -706,7 +703,7 @@ pg_ls_tmpdir(FunctionCallInfo fcinfo, Oid tblspc)
 
 	TempTablespacePath(path, tblspc);
 	return pg_ls_dir_files(fcinfo, path,
-			LS_DIR_SKIP_HIDDEN | LS_DIR_SKIP_SPECIAL | LS_DIR_ISDIR | LS_DIR_METADATA | LS_DIR_MISSING_OK);
+			LS_DIR_COMMON | LS_DIR_MISSING_OK);
 }
 
 /*
@@ -736,7 +733,7 @@ Datum
 pg_ls_archive_statusdir(PG_FUNCTION_ARGS)
 {
 	return pg_ls_dir_files(fcinfo, XLOGDIR "/archive_status",
-			LS_DIR_HISTORIC | LS_DIR_MISSING_OK);
+			LS_DIR_COMMON | LS_DIR_MISSING_OK);
 }
 
 /*
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 149dfacf4b..c3564168e5 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -10933,18 +10933,18 @@
 { oid => '3353', descr => 'list files in the log directory',
   proname => 'pg_ls_logdir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => '',
-  proallargtypes => '{text,int8,timestamptz}', proargmodes => '{o,o,o}',
-  proargnames => '{name,size,modification}', prosrc => 'pg_ls_logdir' },
+  proallargtypes => '{text,int8,timestamptz,bool}', proargmodes => '{o,o,o,o}',
+  proargnames => '{name,size,modification,isdir}', prosrc => 'pg_ls_logdir' },
 { oid => '3354', descr => 'list of files in the WAL directory',
   proname => 'pg_ls_waldir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => '',
-  proallargtypes => '{text,int8,timestamptz}', proargmodes => '{o,o,o}',
-  proargnames => '{name,size,modification}', prosrc => 'pg_ls_waldir' },
+  proallargtypes => '{text,int8,timestamptz,bool}', proargmodes => '{o,o,o,o}',
+  proargnames => '{name,size,modification,isdir}', prosrc => 'pg_ls_waldir' },
 { oid => '5031', descr => 'list of files in the archive_status directory',
   proname => 'pg_ls_archive_statusdir', procost => '10', prorows => '20',
   proretset => 't', provolatile => 'v', prorettype => 'record',
-  proargtypes => '', proallargtypes => '{text,int8,timestamptz}',
-  proargmodes => '{o,o,o}', proargnames => '{name,size,modification}',
+  proargtypes => '', proallargtypes => '{text,int8,timestamptz,bool}',
+  proargmodes => '{o,o,o,o}', proargnames => '{name,size,modification,isdir}',
   prosrc => 'pg_ls_archive_statusdir' },
 { oid => '5029', descr => 'list files in the pgsql_tmp directory',
   proname => 'pg_ls_tmpdir', procost => '10', prorows => '20', proretset => 't',
diff --git a/src/test/regress/expected/misc_functions.out b/src/test/regress/expected/misc_functions.out
index 0144f611c2..bb926a2cf4 100644
--- a/src/test/regress/expected/misc_functions.out
+++ b/src/test/regress/expected/misc_functions.out
@@ -157,8 +157,8 @@ select count(*) > 0 as ok from (select pg_ls_waldir()) ss;
 
 -- Test not-run-to-completion cases.
 select * from pg_ls_waldir() limit 0;
- name | size | modification 
-------+------+--------------
+ name | size | modification | isdir 
+------+------+--------------+-------
 (0 rows)
 
 select count(*) > 0 as ok from (select * from pg_ls_waldir() limit 1) ss;
-- 
2.17.0

>From 90a05ebfefa3cbeb54ae2a32b8529a287709ea6c Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Sun, 8 Mar 2020 22:52:14 -0500
Subject: [PATCH v22 07/10] Add pg_ls_dir_recurse to show dir recursively..

..possibly there's a better place to put this, like maybe a doc-only example ?

Need catversion bumped ?
---
 doc/src/sgml/func.sgml                       | 32 ++++++++++++++++++++
 src/backend/catalog/system_views.sql         |  1 +
 src/bin/pg_rewind/libpq_fetch.c              | 22 +++-----------
 src/bin/pg_rewind/t/RewindTest.pm            |  7 ++++-
 src/include/catalog/pg_proc.dat              |  6 ++++
 src/test/regress/expected/misc_functions.out | 13 ++++++++
 src/test/regress/sql/misc_functions.sql      |  6 ++++
 7 files changed, 69 insertions(+), 18 deletions(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index f7ccf68ff4..7baf2b31e5 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -25769,6 +25769,38 @@ SELECT pg_size_pretty(sum(pg_relation_size(relid))) AS total_size
        </para></entry>
       </row>
 
+      <row>
+       <entry role="func_table_entry"><para role="func_signature">
+        <indexterm>
+         <primary>pg_ls_dir_recurse</primary>
+        </indexterm>
+        <function>pg_ls_dir_recurse</function> ( <parameter>dirname</parameter> <type>text</type> )
+        <returnvalue>setof record</returnvalue>
+        ( <parameter>name</parameter> <type>text</type>,
+        <parameter>size</parameter> <type>bigint</type>,
+        <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>isdir</parameter> <type>boolean</type> )
+       </para>
+       <para>
+        Recursively list each file in the specified directory, along with the
+        files' metadata.
+       </para>
+       <para>
+        Restricted to superusers by default, but other users can be granted
+        EXECUTE to run the function.
+       </para></entry>
+      </row>
+
+   <!--para>
+    To recursively list temporary directories in all tablespaces:
+<programlisting>
+SELECT * FROM (SELECT DISTINCT COALESCE(NULLIF(pg_tablespace_location(b.oid),'')||suffix, 'base/pgsql_tmp') AS dir
+FROM pg_tablespace b, pg_control_system() pcs,
+LATERAL format('/PG_%s_%s', left(current_setting('server_version_num'), 2), pcs.catalog_version_no) AS suffix) AS dir,
+LATERAL pg_ls_dir_recurse(dir) AS a;
+</programlisting>
+   </para-->
+
       <row>
        <entry role="func_table_entry"><para role="func_signature">
         <indexterm>
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index 169602c1b6..55b700dadc 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -1510,6 +1510,7 @@ REVOKE EXECUTE ON FUNCTION pg_stat_file(text,boolean) FROM public;
 REVOKE EXECUTE ON FUNCTION pg_ls_dir(text) FROM public;
 REVOKE EXECUTE ON FUNCTION pg_ls_dir(text,boolean,boolean) FROM public;
 REVOKE EXECUTE ON FUNCTION pg_ls_dir_metadata(text,boolean,boolean) FROM public;
+REVOKE EXECUTE ON FUNCTION pg_ls_dir_recurse(text) FROM public;
 
 --
 -- We also set up some things as accessible to standard roles.
diff --git a/src/bin/pg_rewind/libpq_fetch.c b/src/bin/pg_rewind/libpq_fetch.c
index bf4dfc23b9..a9535d3dd5 100644
--- a/src/bin/pg_rewind/libpq_fetch.c
+++ b/src/bin/pg_rewind/libpq_fetch.c
@@ -176,30 +176,18 @@ libpqProcessFileList(void)
 	/*
 	 * Create a recursive directory listing of the whole data directory.
 	 *
-	 * The WITH RECURSIVE part does most of the work. The second part gets the
-	 * targets of the symlinks in pg_tblspc directory.
+	 * Join to pg_tablespace to get the targets of the symlinks in
+	 * pg_tblspc directory.
 	 *
 	 * XXX: There is no backend function to get a symbolic link's target in
 	 * general, so if the admin has put any custom symbolic links in the data
 	 * directory, they won't be copied correctly.
 	 */
 	sql =
-		"WITH RECURSIVE files (path, filename, size, isdir) AS (\n"
-		"  SELECT '' AS path, filename, size, isdir FROM\n"
-		"  (SELECT pg_ls_dir('.', true, false) AS filename) AS fn,\n"
-		"        pg_stat_file(fn.filename, true) AS this\n"
-		"  UNION ALL\n"
-		"  SELECT parent.path || parent.filename || '/' AS path,\n"
-		"         fn, this.size, this.isdir\n"
-		"  FROM files AS parent,\n"
-		"       pg_ls_dir(parent.path || parent.filename, true, false) AS fn,\n"
-		"       pg_stat_file(parent.path || parent.filename || '/' || fn, true) AS this\n"
-		"       WHERE parent.isdir = 't'\n"
-		")\n"
-		"SELECT path || filename, size, isdir,\n"
+		"SELECT COALESCE(NULLIF(path,'.')||'/','')||filename, size, isdir,\n"
 		"       pg_tablespace_location(pg_tablespace.oid) AS link_target\n"
-		"FROM files\n"
-		"LEFT OUTER JOIN pg_tablespace ON files.path = 'pg_tblspc/'\n"
+		"FROM pg_ls_dir_recurse('.') files\n"
+		"LEFT OUTER JOIN pg_tablespace ON files.path = 'pg_tblspc'\n"
 		"                             AND oid::text = files.filename\n";
 	res = PQexec(conn, sql);
 
diff --git a/src/bin/pg_rewind/t/RewindTest.pm b/src/bin/pg_rewind/t/RewindTest.pm
index 41ed7d4b3b..cacd58651c 100644
--- a/src/bin/pg_rewind/t/RewindTest.pm
+++ b/src/bin/pg_rewind/t/RewindTest.pm
@@ -160,7 +160,12 @@ sub start_primary
 		GRANT EXECUTE ON function pg_catalog.pg_read_binary_file(text)
 		  TO rewind_user;
 		GRANT EXECUTE ON function pg_catalog.pg_read_binary_file(text, bigint, bigint, boolean)
-		  TO rewind_user;");
+		  TO rewind_user;
+		GRANT EXECUTE ON function pg_catalog.pg_ls_dir_metadata(text, bool, bool)
+		  TO rewind_user;
+		GRANT EXECUTE ON function pg_catalog.pg_ls_dir_recurse(text)
+		  TO rewind_user;
+		");
 
 	#### Now run the test-specific parts to initialize the primary before setting
 	# up standby
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index c3564168e5..0235042e26 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -10976,6 +10976,12 @@
   proallargtypes => '{text,text,int8,timestamptz,bool}', proargmodes => '{i,o,o,o,o}',
   proargnames => '{dirname,filename,size,modification,isdir}',
   prosrc => 'pg_ls_dir_metadata_1arg' },
+{ oid => '9981', descr => 'list all files in a directory recursively',
+  proname => 'pg_ls_dir_recurse', prorows => '10000', proretset => 't',
+  provolatile => 'v', prorettype => 'record', proargtypes => 'text',
+  proallargtypes => '{text,text,text,int8,timestamptz,bool}',
+  proargnames => '{dirname,path,filename,size,modification,isdir}', proargmodes => '{i,o,o,o,o,o}',
+  prolang => 'sql', prosrc => "with recursive ls as (select dirname as path, * from pg_ls_dir_metadata(dirname, false, false) union all select coalesce(nullif(parent.path,'.')||'/','')||parent.filename, a.filename, a.size, a.modification, a.isdir from ls as parent, lateral pg_ls_dir_metadata(parent.path||'/'||parent.filename, false, false) as a where parent.isdir) select * from ls" },
 
 # hash partitioning constraint function
 { oid => '5028', descr => 'hash partition CHECK constraint',
diff --git a/src/test/regress/expected/misc_functions.out b/src/test/regress/expected/misc_functions.out
index bb926a2cf4..302f348a6d 100644
--- a/src/test/regress/expected/misc_functions.out
+++ b/src/test/regress/expected/misc_functions.out
@@ -243,6 +243,19 @@ select * from pg_ls_dir_metadata('.') limit 0;
 ----------+------+--------------+-------
 (0 rows)
 
+-- Check that we at least succeed in recursing once, and that we don't show the leading dir prefix
+select path, filename, isdir from pg_ls_dir_recurse('.') where isdir and path='pg_wal';
+  path  |    filename    | isdir 
+--------+----------------+-------
+ pg_wal | archive_status | t
+(1 row)
+
+-- Check that expected columns are present
+select * from pg_ls_dir_recurse('.') limit 0;
+ path | filename | size | modification | isdir 
+------+----------+------+--------------+-------
+(0 rows)
+
 --
 -- Test adding a support function to a subject function
 --
diff --git a/src/test/regress/sql/misc_functions.sql b/src/test/regress/sql/misc_functions.sql
index 68e2bc6586..fda95828d7 100644
--- a/src/test/regress/sql/misc_functions.sql
+++ b/src/test/regress/sql/misc_functions.sql
@@ -76,6 +76,12 @@ select filename, isdir from pg_ls_dir_metadata('.', false, false) where filename
 -- Check that expected columns are present
 select * from pg_ls_dir_metadata('.') limit 0;
 
+-- Check that we at least succeed in recursing once, and that we don't show the leading dir prefix
+select path, filename, isdir from pg_ls_dir_recurse('.') where isdir and path='pg_wal';
+
+-- Check that expected columns are present
+select * from pg_ls_dir_recurse('.') limit 0;
+
 --
 -- Test adding a support function to a subject function
 --
-- 
2.17.0

>From a4a04eb44685b6cddfbc56fb19f37ee23bbd7601 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Fri, 6 Mar 2020 17:23:51 -0600
Subject: [PATCH v22 08/10] pg_ls_logdir to ignore error if initial/top dir is
 missing

---
 src/backend/utils/adt/genfile.c           | 2 +-
 src/test/regress/input/tablespace.source  | 4 ++++
 src/test/regress/output/tablespace.source | 7 +++++++
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/backend/utils/adt/genfile.c b/src/backend/utils/adt/genfile.c
index a61ddfc451..35fe4d7cc1 100644
--- a/src/backend/utils/adt/genfile.c
+++ b/src/backend/utils/adt/genfile.c
@@ -677,7 +677,7 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags)
 Datum
 pg_ls_logdir(PG_FUNCTION_ARGS)
 {
-	return pg_ls_dir_files(fcinfo, Log_directory, LS_DIR_COMMON);
+	return pg_ls_dir_files(fcinfo, Log_directory, LS_DIR_COMMON | LS_DIR_MISSING_OK);
 }
 
 /* Function to return the list of files in the WAL directory */
diff --git a/src/test/regress/input/tablespace.source b/src/test/regress/input/tablespace.source
index 0b9cfe615e..2a1268e17c 100644
--- a/src/test/regress/input/tablespace.source
+++ b/src/test/regress/input/tablespace.source
@@ -16,6 +16,10 @@ CREATE TABLESPACE regress_tblspace LOCATION '@testtablespace@';
 -- The query is written to ERROR if the tablespace doesn't exist, rather than silently failing to call pg_ls_tmpdir()
 SELECT c.* FROM (SELECT oid FROM pg_tablespace b WHERE b.spcname='regress_tblspace' UNION SELECT 0 ORDER BY 1 DESC LIMIT 1) AS b , pg_ls_tmpdir(oid) AS c WHERE c.name='Does not exist';
 
+-- This tests the missing_ok parameter.  If that's not functioning, this would ERROR if the logdir doesn't exist yet.
+-- The name='' condition is never true, so the function runs to completion but returns zero rows.
+SELECT * FROM pg_ls_logdir() WHERE name='Does not exist';
+
 -- try setting and resetting some properties for the new tablespace
 ALTER TABLESPACE regress_tblspace SET (random_page_cost = 1.0, seq_page_cost = 1.1);
 ALTER TABLESPACE regress_tblspace SET (some_nonexistent_parameter = true);  -- fail
diff --git a/src/test/regress/output/tablespace.source b/src/test/regress/output/tablespace.source
index 1c88e914e3..ba9a3fe29a 100644
--- a/src/test/regress/output/tablespace.source
+++ b/src/test/regress/output/tablespace.source
@@ -21,6 +21,13 @@ SELECT c.* FROM (SELECT oid FROM pg_tablespace b WHERE b.spcname='regress_tblspa
 ------+------+--------------+-------
 (0 rows)
 
+-- This tests the missing_ok parameter.  If that's not functioning, this would ERROR if the logdir doesn't exist yet.
+-- The name='' condition is never true, so the function runs to completion but returns zero rows.
+SELECT * FROM pg_ls_logdir() WHERE name='Does not exist';
+ name | size | modification | isdir 
+------+------+--------------+-------
+(0 rows)
+
 -- try setting and resetting some properties for the new tablespace
 ALTER TABLESPACE regress_tblspace SET (random_page_cost = 1.0, seq_page_cost = 1.1);
 ALTER TABLESPACE regress_tblspace SET (some_nonexistent_parameter = true);  -- fail
-- 
2.17.0

>From 207a7c30a257ad5b8eada5384356fdc19ff16e39 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Mon, 9 Mar 2020 21:56:21 -0500
Subject: [PATCH v22 09/10] pg_ls_*dir to return all the metadata from
 pg_stat_file..

..but it doesn't seem worth factoring out the common bits, since stat_file
doesn't return a name, so all the field numbers are off by one.

NOTE, the atime is now shown where the mtime used to be.

Need catversion bump
---
 doc/src/sgml/func.sgml                       | 37 +++++++---
 src/backend/utils/adt/genfile.c              | 71 +++++++++-----------
 src/include/catalog/pg_proc.dat              | 34 +++++-----
 src/test/regress/expected/misc_functions.out | 16 ++---
 src/test/regress/output/tablespace.source    |  8 +--
 5 files changed, 89 insertions(+), 77 deletions(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 7baf2b31e5..809483feed 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -25758,7 +25758,10 @@ SELECT pg_size_pretty(sum(pg_relation_size(relid))) AS total_size
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
+        <parameter>access</parameter> <type>timestamp with time zone</type>,
         <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>change</parameter> <type>timestamp with time zone</type>,
+        <parameter>creation</parameter> <type>timestamp with time zone</type>,
         <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
@@ -25778,7 +25781,10 @@ SELECT pg_size_pretty(sum(pg_relation_size(relid))) AS total_size
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
+        <parameter>access</parameter> <type>timestamp with time zone</type>,
         <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>change</parameter> <type>timestamp with time zone</type>,
+        <parameter>creation</parameter> <type>timestamp with time zone</type>,
         <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
@@ -25810,13 +25816,16 @@ LATERAL pg_ls_dir_recurse(dir) AS a;
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
+        <parameter>access</parameter> <type>timestamp with time zone</type>,
         <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>change</parameter> <type>timestamp with time zone</type>,
+        <parameter>creation</parameter> <type>timestamp with time zone</type>,
         <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
         For each file in the server's log directory,
-        return the file's name, size, last modification time (mtime), and a boolean
-        indicating if the file is a directory.
+        return the file's name, along with the metadata columns returned by
+        <function>pg_stat_file</function>.
         Filenames beginning with a dot and special file types are excluded.
        </para>
        <para>
@@ -25835,13 +25844,16 @@ LATERAL pg_ls_dir_recurse(dir) AS a;
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
+        <parameter>access</parameter> <type>timestamp with time zone</type>,
         <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>change</parameter> <type>timestamp with time zone</type>,
+        <parameter>creation</parameter> <type>timestamp with time zone</type>,
         <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
         For each file in the server's write-ahead log (WAL) directory, list the
-        file's name, size, last modification time (mtime), and a boolean
-        indicating if the file is a directory.
+        file's name along with the metadata columns returned by
+        <function>pg_stat_file</function>.
         Filenames beginning with a dot and special files types are excluded.
        </para>
        <para>
@@ -25860,14 +25872,17 @@ LATERAL pg_ls_dir_recurse(dir) AS a;
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
+        <parameter>access</parameter> <type>timestamp with time zone</type>,
         <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>change</parameter> <type>timestamp with time zone</type>,
+        <parameter>creation</parameter> <type>timestamp with time zone</type>,
         <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
         For each file in the server's WAL archive status directory
-        (<filename>pg_wal/archive_status</filename>), list the file's
-        name, size, last modification time (mtime), and a boolean indicating if
-        the file is a directory.
+        (<filename>pg_wal/archive_status</filename>), list the file's name
+        along with the metadata columns returned by
+        <function>pg_stat_file</function>.
         Filenames beginning with a dot and special file types are excluded.
        </para>
        <para>
@@ -25887,13 +25902,17 @@ LATERAL pg_ls_dir_recurse(dir) AS a;
         <returnvalue>setof record</returnvalue>
         ( <parameter>name</parameter> <type>text</type>,
         <parameter>size</parameter> <type>bigint</type>,
+        <parameter>access</parameter> <type>timestamp with time zone</type>,
         <parameter>modification</parameter> <type>timestamp with time zone</type>,
+        <parameter>change</parameter> <type>timestamp with time zone</type>,
+        <parameter>creation</parameter> <type>timestamp with time zone</type>,
         <parameter>isdir</parameter> <type>boolean</type> )
        </para>
        <para>
         For each file in the temporary directory within the given
-        <parameter>tablespace</parameter>, return the file's name, size, last
-        modification time (mtime) and a boolean indicating if the file is a directory.
+        <parameter>tablespace</parameter>, list the file's name
+        along with the metadata columns returned by
+        <function>pg_stat_file</function>.
         Directories are used for temporary files shared by parallel processes.
         If <parameter>tablespace</parameter> is not provided, the
         <literal>pg_default</literal> tablespace is examined.
diff --git a/src/backend/utils/adt/genfile.c b/src/backend/utils/adt/genfile.c
index 35fe4d7cc1..20b948b746 100644
--- a/src/backend/utils/adt/genfile.c
+++ b/src/backend/utils/adt/genfile.c
@@ -36,6 +36,8 @@
 #include "utils/syscache.h"
 #include "utils/timestamp.h"
 
+static void tuple_from_stat(struct stat *fst, const char *path, Datum *values,
+		bool *nulls);
 static Datum pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags);
 
 #define	LS_DIR_ISDIR				(1<<0) /* Show column: isdir */
@@ -397,6 +399,28 @@ pg_read_binary_file_all(PG_FUNCTION_ARGS)
 	return pg_read_binary_file(fcinfo);
 }
 
+/*
+ * Populate values and nulls from fst and path.
+ * Used for pg_stat_file() and pg_stat_dir_files()
+ * nulls is assumed to have been zerod.
+ */
+static void
+tuple_from_stat(struct stat *fst, const char *path, Datum *values, bool *nulls)
+{
+	values[0] = Int64GetDatum((int64) fst->st_size);
+	values[1] = TimestampTzGetDatum(time_t_to_timestamptz(fst->st_atime));
+	values[2] = TimestampTzGetDatum(time_t_to_timestamptz(fst->st_mtime));
+	/* Unix has file status change time, while Win32 has creation time */
+#if !defined(WIN32) && !defined(__CYGWIN__)
+	values[3] = TimestampTzGetDatum(time_t_to_timestamptz(fst->st_ctime));
+	nulls[4] = true;
+#else
+	nulls[3] = true;
+	values[4] = TimestampTzGetDatum(time_t_to_timestamptz(fst->st_ctime));
+#endif
+	values[5] = BoolGetDatum(S_ISDIR(fst->st_mode));
+}
+
 /*
  * stat a file
  */
@@ -407,7 +431,7 @@ pg_stat_file(PG_FUNCTION_ARGS)
 	char	   *filename;
 	struct stat fst;
 	Datum		values[6];
-	bool		isnull[6];
+	bool		nulls[6];
 	HeapTuple	tuple;
 	TupleDesc	tupdesc;
 	bool		missing_ok = false;
@@ -447,27 +471,9 @@ pg_stat_file(PG_FUNCTION_ARGS)
 					   "isdir", BOOLOID, -1, 0);
 	BlessTupleDesc(tupdesc);
 
-	memset(isnull, false, sizeof(isnull));
-
-	values[0] = Int64GetDatum((int64) fst.st_size);
-	values[1] = TimestampTzGetDatum(time_t_to_timestamptz(fst.st_atime));
-	values[2] = TimestampTzGetDatum(time_t_to_timestamptz(fst.st_mtime));
-	/* Unix has file status change time, while Win32 has creation time */
-#if !defined(WIN32) && !defined(__CYGWIN__)
-	values[3] = TimestampTzGetDatum(time_t_to_timestamptz(fst.st_ctime));
-	isnull[4] = true;
-#else
-	isnull[3] = true;
-	values[4] = TimestampTzGetDatum(time_t_to_timestamptz(fst.st_ctime));
-#endif
-	values[5] = BoolGetDatum(S_ISDIR(fst.st_mode));
-#ifdef WIN32
-	/* Links should have isdir=false */
-	if (pgwin32_is_junction(filename))
-		values[5] = BoolGetDatum(false);
-#endif
-
-	tuple = heap_form_tuple(tupdesc, values, isnull);
+	memset(nulls, false, sizeof(nulls));
+	tuple_from_stat(&fst, filename, values, nulls);
+	tuple = heap_form_tuple(tupdesc, values, nulls);
 
 	pfree(filename);
 
@@ -608,8 +614,8 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags)
 
 	while ((de = ReadDir(dirdesc, dir)) != NULL)
 	{
-		Datum		values[4];
-		bool		nulls[4];
+		Datum		values[7];
+		bool		nulls[7];
 		char		path[MAXPGPATH * 2];
 		struct stat attrib;
 
@@ -648,23 +654,10 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags)
 				continue;
 		}
 
+		memset(nulls, false, sizeof(nulls));
 		values[0] = CStringGetTextDatum(de->d_name);
 		if (flags & LS_DIR_METADATA)
-		{
-			values[1] = Int64GetDatum((int64) attrib.st_size);
-			values[2] = TimestampTzGetDatum(time_t_to_timestamptz(attrib.st_mtime));
-			if (flags & LS_DIR_ISDIR)
-			{
-				values[3] = BoolGetDatum(S_ISDIR(attrib.st_mode));
-#ifdef WIN32
-				/* Links should have isdir=false */
-				if (pgwin32_is_junction(path))
-					values[3] = BoolGetDatum(false);
-#endif
-			}
-		}
-
-		memset(nulls, 0, sizeof(nulls));
+			tuple_from_stat(&attrib, path, 1+values, 1+nulls);
 
 		tuplestore_putvalues(tupstore, tupdesc, values, nulls);
 	}
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 0235042e26..3f62aea9c9 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -10933,29 +10933,29 @@
 { oid => '3353', descr => 'list files in the log directory',
   proname => 'pg_ls_logdir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => '',
-  proallargtypes => '{text,int8,timestamptz,bool}', proargmodes => '{o,o,o,o}',
-  proargnames => '{name,size,modification,isdir}', prosrc => 'pg_ls_logdir' },
+  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{o,o,o,o,o,o,o}',
+  proargnames => '{name,size,access,modification,change,creation,isdir}', prosrc => 'pg_ls_logdir' },
 { oid => '3354', descr => 'list of files in the WAL directory',
   proname => 'pg_ls_waldir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => '',
-  proallargtypes => '{text,int8,timestamptz,bool}', proargmodes => '{o,o,o,o}',
-  proargnames => '{name,size,modification,isdir}', prosrc => 'pg_ls_waldir' },
+  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{o,o,o,o,o,o,o}',
+  proargnames => '{name,size,access,modification,change,creation,isdir}', prosrc => 'pg_ls_waldir' },
 { oid => '5031', descr => 'list of files in the archive_status directory',
   proname => 'pg_ls_archive_statusdir', procost => '10', prorows => '20',
   proretset => 't', provolatile => 'v', prorettype => 'record',
-  proargtypes => '', proallargtypes => '{text,int8,timestamptz,bool}',
-  proargmodes => '{o,o,o,o}', proargnames => '{name,size,modification,isdir}',
+  proargtypes => '', proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}',
+  proargmodes => '{o,o,o,o,o,o,o}', proargnames => '{name,size,access,modification,change,creation,isdir}',
   prosrc => 'pg_ls_archive_statusdir' },
 { oid => '5029', descr => 'list files in the pgsql_tmp directory',
   proname => 'pg_ls_tmpdir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => '',
-  proallargtypes => '{text,int8,timestamptz,bool}', proargmodes => '{o,o,o,o}',
-  proargnames => '{name,size,modification,isdir}', prosrc => 'pg_ls_tmpdir_noargs' },
+  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{o,o,o,o,o,o,o}',
+  proargnames => '{name,size,access,modification,change,creation,isdir}', prosrc => 'pg_ls_tmpdir_noargs' },
 { oid => '5030', descr => 'list files in the pgsql_tmp directory',
   proname => 'pg_ls_tmpdir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => 'oid',
-  proallargtypes => '{oid,text,int8,timestamptz,bool}', proargmodes => '{i,o,o,o,o}',
-  proargnames => '{tablespace,name,size,modification,isdir}',
+  proallargtypes => '{oid,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{i,o,o,o,o,o,o,o}',
+  proargnames => '{tablespace,name,size,access,modification,change,creation,isdir}',
   prosrc => 'pg_ls_tmpdir_1arg' },
 { oid => '9147', descr => 'check pages of a relation',
   proname => 'pg_relation_check_pages', procost => '10000', prorows => '20',
@@ -10967,21 +10967,21 @@
 { oid => '9979', descr => 'list directory with metadata',
   proname => 'pg_ls_dir_metadata', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => 'text bool bool',
-  proallargtypes => '{text,bool,bool,text,int8,timestamptz,bool}', proargmodes => '{i,i,i,o,o,o,o}',
-  proargnames => '{dirname,missing_ok,include_dot_dirs,filename,size,modification,isdir}',
+  proallargtypes => '{text,bool,bool,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{i,i,i,o,o,o,o,o,o,o}',
+  proargnames => '{dirname,missing_ok,include_dot_dirs,filename,size,access,modification,change,creation,isdir}',
   prosrc => 'pg_ls_dir_metadata' },
 { oid => '9980', descr => 'list directory with metadata',
   proname => 'pg_ls_dir_metadata', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => 'text',
-  proallargtypes => '{text,text,int8,timestamptz,bool}', proargmodes => '{i,o,o,o,o}',
-  proargnames => '{dirname,filename,size,modification,isdir}',
+  proallargtypes => '{text,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{i,o,o,o,o,o,o,o}',
+  proargnames => '{dirname,filename,size,access,modification,change,creation,isdir}',
   prosrc => 'pg_ls_dir_metadata_1arg' },
 { oid => '9981', descr => 'list all files in a directory recursively',
   proname => 'pg_ls_dir_recurse', prorows => '10000', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => 'text',
-  proallargtypes => '{text,text,text,int8,timestamptz,bool}',
-  proargnames => '{dirname,path,filename,size,modification,isdir}', proargmodes => '{i,o,o,o,o,o}',
-  prolang => 'sql', prosrc => "with recursive ls as (select dirname as path, * from pg_ls_dir_metadata(dirname, false, false) union all select coalesce(nullif(parent.path,'.')||'/','')||parent.filename, a.filename, a.size, a.modification, a.isdir from ls as parent, lateral pg_ls_dir_metadata(parent.path||'/'||parent.filename, false, false) as a where parent.isdir) select * from ls" },
+  proallargtypes => '{text,text,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}',
+  proargnames => '{dirname,path,filename,size,access,modification,change,creation,isdir}', proargmodes => '{i,o,o,o,o,o,o,o,o}',
+  prolang => 'sql', prosrc => "with recursive ls as (select dirname as path, * from pg_ls_dir_metadata(dirname, false, false) union all select coalesce(nullif(parent.path,'.')||'/','')||parent.filename, a.filename, a.size, a.access, a.modification, a.change, a.creation, a.isdir from ls as parent, lateral pg_ls_dir_metadata(parent.path||'/'||parent.filename, false, false) as a where parent.isdir) select * from ls" },
 
 # hash partitioning constraint function
 { oid => '5028', descr => 'hash partition CHECK constraint',
diff --git a/src/test/regress/expected/misc_functions.out b/src/test/regress/expected/misc_functions.out
index 302f348a6d..4be27fe21e 100644
--- a/src/test/regress/expected/misc_functions.out
+++ b/src/test/regress/expected/misc_functions.out
@@ -157,8 +157,8 @@ select count(*) > 0 as ok from (select pg_ls_waldir()) ss;
 
 -- Test not-run-to-completion cases.
 select * from pg_ls_waldir() limit 0;
- name | size | modification | isdir 
-------+------+--------------+-------
+ name | size | access | modification | change | creation | isdir 
+------+------+--------+--------------+--------+----------+-------
 (0 rows)
 
 select count(*) > 0 as ok from (select * from pg_ls_waldir() limit 1) ss;
@@ -222,8 +222,8 @@ ERROR:  could not open directory "does not exist": No such file or directory
 -- This tests the missing_ok parameter, which causes pg_ls_tmpdir to succeed even if the tmpdir doesn't exist yet
 -- The name='' condition is never true, so the function runs to completion but returns zero rows.
 select * from pg_ls_tmpdir() where name='Does not exist';
- name | size | modification | isdir 
-------+------+--------------+-------
+ name | size | access | modification | change | creation | isdir 
+------+------+--------+--------------+--------+----------+-------
 (0 rows)
 
 select filename, isdir from pg_ls_dir_metadata('.') where filename='.';
@@ -239,8 +239,8 @@ select filename, isdir from pg_ls_dir_metadata('.', false, false) where filename
 
 -- Check that expected columns are present
 select * from pg_ls_dir_metadata('.') limit 0;
- filename | size | modification | isdir 
-----------+------+--------------+-------
+ filename | size | access | modification | change | creation | isdir 
+----------+------+--------+--------------+--------+----------+-------
 (0 rows)
 
 -- Check that we at least succeed in recursing once, and that we don't show the leading dir prefix
@@ -252,8 +252,8 @@ select path, filename, isdir from pg_ls_dir_recurse('.') where isdir and path='p
 
 -- Check that expected columns are present
 select * from pg_ls_dir_recurse('.') limit 0;
- path | filename | size | modification | isdir 
-------+----------+------+--------------+-------
+ path | filename | size | access | modification | change | creation | isdir 
+------+----------+------+--------+--------------+--------+----------+-------
 (0 rows)
 
 --
diff --git a/src/test/regress/output/tablespace.source b/src/test/regress/output/tablespace.source
index ba9a3fe29a..1e1e02b589 100644
--- a/src/test/regress/output/tablespace.source
+++ b/src/test/regress/output/tablespace.source
@@ -17,15 +17,15 @@ CREATE TABLESPACE regress_tblspace LOCATION '@testtablespace@';
 -- The name='' condition is never true, so the function runs to completion but returns zero rows.
 -- The query is written to ERROR if the tablespace doesn't exist, rather than silently failing to call pg_ls_tmpdir()
 SELECT c.* FROM (SELECT oid FROM pg_tablespace b WHERE b.spcname='regress_tblspace' UNION SELECT 0 ORDER BY 1 DESC LIMIT 1) AS b , pg_ls_tmpdir(oid) AS c WHERE c.name='Does not exist';
- name | size | modification | isdir 
-------+------+--------------+-------
+ name | size | access | modification | change | creation | isdir 
+------+------+--------+--------------+--------+----------+-------
 (0 rows)
 
 -- This tests the missing_ok parameter.  If that's not functioning, this would ERROR if the logdir doesn't exist yet.
 -- The name='' condition is never true, so the function runs to completion but returns zero rows.
 SELECT * FROM pg_ls_logdir() WHERE name='Does not exist';
- name | size | modification | isdir 
-------+------+--------------+-------
+ name | size | access | modification | change | creation | isdir 
+------+------+--------+--------------+--------+----------+-------
 (0 rows)
 
 -- try setting and resetting some properties for the new tablespace
-- 
2.17.0

>From 6a3e40d83fcdf74b0db74bf45a16c92c346e5846 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Tue, 31 Mar 2020 14:40:34 -0500
Subject: [PATCH v22 10/10] pg_ls_*/pg_stat_file to show file *type*..

..not just "isdir"

Also show special file types, now that their type is shown.
---
 doc/src/sgml/func.sgml                       | 16 +++---
 src/backend/utils/adt/genfile.c              | 58 ++++++++++++++++----
 src/bin/pg_rewind/libpq_fetch.c              |  2 +-
 src/include/catalog/pg_proc.dat              | 38 ++++++-------
 src/test/regress/expected/misc_functions.out | 38 ++++++-------
 src/test/regress/output/tablespace.source    |  8 +--
 src/test/regress/sql/misc_functions.sql      |  6 +-
 7 files changed, 103 insertions(+), 63 deletions(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 809483feed..b8a0c2c3b1 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -25826,7 +25826,7 @@ LATERAL pg_ls_dir_recurse(dir) AS a;
         For each file in the server's log directory,
         return the file's name, along with the metadata columns returned by
         <function>pg_stat_file</function>.
-        Filenames beginning with a dot and special file types are excluded.
+        Filenames beginning with a dot are excluded.
        </para>
        <para>
         This function is restricted to superusers and members of
@@ -25854,7 +25854,7 @@ LATERAL pg_ls_dir_recurse(dir) AS a;
         For each file in the server's write-ahead log (WAL) directory, list the
         file's name along with the metadata columns returned by
         <function>pg_stat_file</function>.
-        Filenames beginning with a dot and special files types are excluded.
+        Filenames beginning with a dot are excluded.
        </para>
        <para>
         This function is restricted to superusers and members of
@@ -25883,7 +25883,7 @@ LATERAL pg_ls_dir_recurse(dir) AS a;
         (<filename>pg_wal/archive_status</filename>), list the file's name
         along with the metadata columns returned by
         <function>pg_stat_file</function>.
-        Filenames beginning with a dot and special file types are excluded.
+        Filenames beginning with a dot are excluded.
        </para>
        <para>
         This function is restricted to superusers and members of
@@ -25916,7 +25916,7 @@ LATERAL pg_ls_dir_recurse(dir) AS a;
         Directories are used for temporary files shared by parallel processes.
         If <parameter>tablespace</parameter> is not provided, the
         <literal>pg_default</literal> tablespace is examined.
-        Filenames beginning with a dot and special file types are excluded.
+        Filenames beginning with a dot are excluded.
        </para>
        <para>
         This function is restricted to superusers and members of
@@ -25990,13 +25990,15 @@ SELECT convert_from(pg_read_binary_file('file_in_utf8.txt'), 'UTF8');
         <parameter>modification</parameter> <type>timestamp with time zone</type>,
         <parameter>change</parameter> <type>timestamp with time zone</type>,
         <parameter>creation</parameter> <type>timestamp with time zone</type>,
-        <parameter>isdir</parameter> <type>boolean</type> )
+        <parameter>type</parameter> <type>char</type> )
        </para>
        <para>
         Returns a record containing the file's size, last access time stamp,
         last modification time stamp, last file status change time stamp (Unix
-        platforms only), file creation time stamp (Windows only), and a flag
-        indicating if it is a directory.
+        platforms only), file creation time stamp (Windows only), and a
+        character representing the file's type: regular (-), directory (d), link
+        or junction (l), character device (c), block device (b), fifo (p),
+        socket (s) or other/unknown (?).
        </para>
        <para>
         This function is restricted to superusers by default, but other users
diff --git a/src/backend/utils/adt/genfile.c b/src/backend/utils/adt/genfile.c
index 20b948b746..843d650ddd 100644
--- a/src/backend/utils/adt/genfile.c
+++ b/src/backend/utils/adt/genfile.c
@@ -36,11 +36,12 @@
 #include "utils/syscache.h"
 #include "utils/timestamp.h"
 
+static char get_file_type(mode_t mode, const char *path);
 static void tuple_from_stat(struct stat *fst, const char *path, Datum *values,
 		bool *nulls);
 static Datum pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags);
 
-#define	LS_DIR_ISDIR				(1<<0) /* Show column: isdir */
+#define	LS_DIR_TYPE				(1<<0) /* Show column: type */
 #define	LS_DIR_METADATA				(1<<1) /* Show columns: mtime, size */
 #define	LS_DIR_MISSING_OK			(1<<2) /* Ignore ENOENT if the toplevel dir is missing */
 #define	LS_DIR_SKIP_DOT_DIRS		(1<<3) /* Do not show . or .. */
@@ -49,7 +50,7 @@ static Datum pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags
 #define	LS_DIR_SKIP_SPECIAL			(1<<6) /* Do not show special file types */
 
 /* Shortcut for common behavior */
-#define LS_DIR_COMMON				(LS_DIR_SKIP_HIDDEN | LS_DIR_SKIP_SPECIAL | LS_DIR_METADATA)
+#define LS_DIR_COMMON				(LS_DIR_SKIP_HIDDEN | LS_DIR_METADATA)
 
 /*
  * Convert a "text" filename argument to C string, and check it's allowable.
@@ -399,6 +400,43 @@ pg_read_binary_file_all(PG_FUNCTION_ARGS)
 	return pg_read_binary_file(fcinfo);
 }
 
+/* Return a character indicating the type of file, or '?' if unknown type */
+static char
+get_file_type(mode_t mode, const char *path)
+{
+	if (S_ISREG(mode))
+		return '-';
+
+	if (S_ISDIR(mode))
+		return 'd';
+#ifndef WIN32
+	if (S_ISLNK(mode))
+		return 'l';
+#else
+	if (pgwin32_is_junction(path))
+		return 'l';
+#endif
+
+#ifdef S_ISCHR
+	if (S_ISCHR(mode))
+		return 'c';
+#endif
+#ifdef S_ISBLK
+	if (S_ISBLK(mode))
+		return 'b';
+#endif
+#ifdef S_ISFIFO
+	if (S_ISFIFO(mode))
+		return 'p';
+#endif
+#ifdef S_ISSOCK
+	if (S_ISSOCK(mode))
+		return 's';
+#endif
+
+	return '?';
+}
+
 /*
  * Populate values and nulls from fst and path.
  * Used for pg_stat_file() and pg_stat_dir_files()
@@ -418,7 +456,7 @@ tuple_from_stat(struct stat *fst, const char *path, Datum *values, bool *nulls)
 	nulls[3] = true;
 	values[4] = TimestampTzGetDatum(time_t_to_timestamptz(fst->st_ctime));
 #endif
-	values[5] = BoolGetDatum(S_ISDIR(fst->st_mode));
+	values[5] = CharGetDatum(get_file_type(fst->st_mode, path));
 }
 
 /*
@@ -468,7 +506,7 @@ pg_stat_file(PG_FUNCTION_ARGS)
 	TupleDescInitEntry(tupdesc, (AttrNumber) 5,
 					   "creation", TIMESTAMPTZOID, -1, 0);
 	TupleDescInitEntry(tupdesc, (AttrNumber) 6,
-					   "isdir", BOOLOID, -1, 0);
+					   "type", CHAROID, -1, 0);
 	BlessTupleDesc(tupdesc);
 
 	memset(nulls, false, sizeof(nulls));
@@ -537,10 +575,10 @@ pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, int flags)
 	MemoryContext oldcontext;
 	TypeFuncClass	tuptype ;
 
-	/* isdir depends on metadata */
-	Assert(!(flags&LS_DIR_ISDIR) || (flags&LS_DIR_METADATA));
-	/* Unreasonable to show isdir and skip dirs */
-	Assert(!(flags&LS_DIR_ISDIR) || !(flags&LS_DIR_SKIP_DIRS));
+	/* type depends on metadata */
+	Assert(!(flags&LS_DIR_TYPE) || (flags&LS_DIR_METADATA));
+	/* Unreasonable to show type and skip dirs XXX */
+	Assert(!(flags&LS_DIR_TYPE) || !(flags&LS_DIR_SKIP_DIRS));
 
 	/* check the optional arguments */
 	if (PG_NARGS() == 3)
@@ -738,7 +776,7 @@ pg_ls_dir_metadata(PG_FUNCTION_ARGS)
 	char	*dirname = convert_and_check_filename(PG_GETARG_TEXT_PP(0));
 
 	return pg_ls_dir_files(fcinfo, dirname,
-			LS_DIR_METADATA | LS_DIR_SKIP_SPECIAL | LS_DIR_ISDIR);
+			LS_DIR_METADATA | LS_DIR_TYPE);
 }
 
 /*
@@ -753,5 +791,5 @@ pg_ls_dir_metadata_1arg(PG_FUNCTION_ARGS)
 	char	*dirname = convert_and_check_filename(PG_GETARG_TEXT_PP(0));
 
 	return pg_ls_dir_files(fcinfo, dirname,
-			LS_DIR_METADATA | LS_DIR_SKIP_SPECIAL | LS_DIR_ISDIR);
+			LS_DIR_METADATA | LS_DIR_TYPE);
 }
diff --git a/src/bin/pg_rewind/libpq_fetch.c b/src/bin/pg_rewind/libpq_fetch.c
index a9535d3dd5..d05a9e962e 100644
--- a/src/bin/pg_rewind/libpq_fetch.c
+++ b/src/bin/pg_rewind/libpq_fetch.c
@@ -184,7 +184,7 @@ libpqProcessFileList(void)
 	 * directory, they won't be copied correctly.
 	 */
 	sql =
-		"SELECT COALESCE(NULLIF(path,'.')||'/','')||filename, size, isdir,\n"
+		"SELECT COALESCE(NULLIF(path,'.')||'/','')||filename, size, type='d' AS isdir,\n"
 		"       pg_tablespace_location(pg_tablespace.oid) AS link_target\n"
 		"FROM pg_ls_dir_recurse('.') files\n"
 		"LEFT OUTER JOIN pg_tablespace ON files.path = 'pg_tblspc'\n"
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 3f62aea9c9..e87b80ce47 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -6193,16 +6193,16 @@
 { oid => '2623', descr => 'get information about file',
   proname => 'pg_stat_file', provolatile => 'v', prorettype => 'record',
   proargtypes => 'text',
-  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}',
+  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,char}',
   proargmodes => '{i,o,o,o,o,o,o}',
-  proargnames => '{filename,size,access,modification,change,creation,isdir}',
+  proargnames => '{filename,size,access,modification,change,creation,type}',
   prosrc => 'pg_stat_file_1arg' },
 { oid => '3307', descr => 'get information about file',
   proname => 'pg_stat_file', provolatile => 'v', prorettype => 'record',
   proargtypes => 'text bool',
-  proallargtypes => '{text,bool,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}',
+  proallargtypes => '{text,bool,int8,timestamptz,timestamptz,timestamptz,timestamptz,char}',
   proargmodes => '{i,i,o,o,o,o,o,o}',
-  proargnames => '{filename,missing_ok,size,access,modification,change,creation,isdir}',
+  proargnames => '{filename,missing_ok,size,access,modification,change,creation,type}',
   prosrc => 'pg_stat_file' },
 { oid => '2624', descr => 'read text from a file',
   proname => 'pg_read_file', provolatile => 'v', prorettype => 'text',
@@ -10933,13 +10933,13 @@
 { oid => '3353', descr => 'list files in the log directory',
   proname => 'pg_ls_logdir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => '',
-  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{o,o,o,o,o,o,o}',
-  proargnames => '{name,size,access,modification,change,creation,isdir}', prosrc => 'pg_ls_logdir' },
+  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,char}', proargmodes => '{o,o,o,o,o,o,o}',
+  proargnames => '{name,size,access,modification,change,creation,type}', prosrc => 'pg_ls_logdir' },
 { oid => '3354', descr => 'list of files in the WAL directory',
   proname => 'pg_ls_waldir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => '',
-  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{o,o,o,o,o,o,o}',
-  proargnames => '{name,size,access,modification,change,creation,isdir}', prosrc => 'pg_ls_waldir' },
+  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,char}', proargmodes => '{o,o,o,o,o,o,o}',
+  proargnames => '{name,size,access,modification,change,creation,type}', prosrc => 'pg_ls_waldir' },
 { oid => '5031', descr => 'list of files in the archive_status directory',
   proname => 'pg_ls_archive_statusdir', procost => '10', prorows => '20',
   proretset => 't', provolatile => 'v', prorettype => 'record',
@@ -10949,13 +10949,13 @@
 { oid => '5029', descr => 'list files in the pgsql_tmp directory',
   proname => 'pg_ls_tmpdir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => '',
-  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{o,o,o,o,o,o,o}',
-  proargnames => '{name,size,access,modification,change,creation,isdir}', prosrc => 'pg_ls_tmpdir_noargs' },
+  proallargtypes => '{text,int8,timestamptz,timestamptz,timestamptz,timestamptz,char}', proargmodes => '{o,o,o,o,o,o,o}',
+  proargnames => '{name,size,access,modification,change,creation,type}', prosrc => 'pg_ls_tmpdir_noargs' },
 { oid => '5030', descr => 'list files in the pgsql_tmp directory',
   proname => 'pg_ls_tmpdir', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => 'oid',
-  proallargtypes => '{oid,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{i,o,o,o,o,o,o,o}',
-  proargnames => '{tablespace,name,size,access,modification,change,creation,isdir}',
+  proallargtypes => '{oid,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,char}', proargmodes => '{i,o,o,o,o,o,o,o}',
+  proargnames => '{tablespace,name,size,access,modification,change,creation,type}',
   prosrc => 'pg_ls_tmpdir_1arg' },
 { oid => '9147', descr => 'check pages of a relation',
   proname => 'pg_relation_check_pages', procost => '10000', prorows => '20',
@@ -10967,21 +10967,21 @@
 { oid => '9979', descr => 'list directory with metadata',
   proname => 'pg_ls_dir_metadata', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => 'text bool bool',
-  proallargtypes => '{text,bool,bool,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{i,i,i,o,o,o,o,o,o,o}',
-  proargnames => '{dirname,missing_ok,include_dot_dirs,filename,size,access,modification,change,creation,isdir}',
+  proallargtypes => '{text,bool,bool,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,char}', proargmodes => '{i,i,i,o,o,o,o,o,o,o}',
+  proargnames => '{dirname,missing_ok,include_dot_dirs,filename,size,access,modification,change,creation,type}',
   prosrc => 'pg_ls_dir_metadata' },
 { oid => '9980', descr => 'list directory with metadata',
   proname => 'pg_ls_dir_metadata', procost => '10', prorows => '20', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => 'text',
-  proallargtypes => '{text,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}', proargmodes => '{i,o,o,o,o,o,o,o}',
-  proargnames => '{dirname,filename,size,access,modification,change,creation,isdir}',
+  proallargtypes => '{text,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,char}', proargmodes => '{i,o,o,o,o,o,o,o}',
+  proargnames => '{dirname,filename,size,access,modification,change,creation,type}',
   prosrc => 'pg_ls_dir_metadata_1arg' },
 { oid => '9981', descr => 'list all files in a directory recursively',
   proname => 'pg_ls_dir_recurse', prorows => '10000', proretset => 't',
   provolatile => 'v', prorettype => 'record', proargtypes => 'text',
-  proallargtypes => '{text,text,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,bool}',
-  proargnames => '{dirname,path,filename,size,access,modification,change,creation,isdir}', proargmodes => '{i,o,o,o,o,o,o,o,o}',
-  prolang => 'sql', prosrc => "with recursive ls as (select dirname as path, * from pg_ls_dir_metadata(dirname, false, false) union all select coalesce(nullif(parent.path,'.')||'/','')||parent.filename, a.filename, a.size, a.access, a.modification, a.change, a.creation, a.isdir from ls as parent, lateral pg_ls_dir_metadata(parent.path||'/'||parent.filename, false, false) as a where parent.isdir) select * from ls" },
+  proallargtypes => '{text,text,text,int8,timestamptz,timestamptz,timestamptz,timestamptz,char}',
+  proargnames => '{dirname,path,filename,size,access,modification,change,creation,type}', proargmodes => '{i,o,o,o,o,o,o,o,o}',
+  prolang => 'sql', prosrc => "with recursive ls as (select dirname as path, * from pg_ls_dir_metadata(dirname, false, false) union all select coalesce(nullif(parent.path,'.')||'/','')||parent.filename, a.filename, a.size, a.access, a.modification, a.change, a.creation, a.type from ls as parent, lateral pg_ls_dir_metadata(parent.path||'/'||parent.filename, false, false) as a where parent.type='d') select * from ls" },
 
 # hash partitioning constraint function
 { oid => '5028', descr => 'hash partition CHECK constraint',
diff --git a/src/test/regress/expected/misc_functions.out b/src/test/regress/expected/misc_functions.out
index 4be27fe21e..9bfc445d99 100644
--- a/src/test/regress/expected/misc_functions.out
+++ b/src/test/regress/expected/misc_functions.out
@@ -157,8 +157,8 @@ select count(*) > 0 as ok from (select pg_ls_waldir()) ss;
 
 -- Test not-run-to-completion cases.
 select * from pg_ls_waldir() limit 0;
- name | size | access | modification | change | creation | isdir 
-------+------+--------+--------------+--------+----------+-------
+ name | size | access | modification | change | creation | type 
+------+------+--------+--------------+--------+----------+------
 (0 rows)
 
 select count(*) > 0 as ok from (select * from pg_ls_waldir() limit 1) ss;
@@ -222,38 +222,38 @@ ERROR:  could not open directory "does not exist": No such file or directory
 -- This tests the missing_ok parameter, which causes pg_ls_tmpdir to succeed even if the tmpdir doesn't exist yet
 -- The name='' condition is never true, so the function runs to completion but returns zero rows.
 select * from pg_ls_tmpdir() where name='Does not exist';
- name | size | access | modification | change | creation | isdir 
-------+------+--------+--------------+--------+----------+-------
+ name | size | access | modification | change | creation | type 
+------+------+--------+--------------+--------+----------+------
 (0 rows)
 
-select filename, isdir from pg_ls_dir_metadata('.') where filename='.';
- filename | isdir 
-----------+-------
- .        | t
+select filename, type from pg_ls_dir_metadata('.') where filename='.';
+ filename | type 
+----------+------
+ .        | d
 (1 row)
 
-select filename, isdir from pg_ls_dir_metadata('.', false, false) where filename='.'; -- include_dot_dirs=false
- filename | isdir 
-----------+-------
+select filename, type from pg_ls_dir_metadata('.', false, false) where filename='.'; -- include_dot_dirs=false
+ filename | type 
+----------+------
 (0 rows)
 
 -- Check that expected columns are present
 select * from pg_ls_dir_metadata('.') limit 0;
- filename | size | access | modification | change | creation | isdir 
-----------+------+--------+--------------+--------+----------+-------
+ filename | size | access | modification | change | creation | type 
+----------+------+--------+--------------+--------+----------+------
 (0 rows)
 
 -- Check that we at least succeed in recursing once, and that we don't show the leading dir prefix
-select path, filename, isdir from pg_ls_dir_recurse('.') where isdir and path='pg_wal';
-  path  |    filename    | isdir 
---------+----------------+-------
- pg_wal | archive_status | t
+select path, filename, type from pg_ls_dir_recurse('.') where type='d' and path='pg_wal';
+  path  |    filename    | type 
+--------+----------------+------
+ pg_wal | archive_status | d
 (1 row)
 
 -- Check that expected columns are present
 select * from pg_ls_dir_recurse('.') limit 0;
- path | filename | size | access | modification | change | creation | isdir 
-------+----------+------+--------+--------------+--------+----------+-------
+ path | filename | size | access | modification | change | creation | type 
+------+----------+------+--------+--------------+--------+----------+------
 (0 rows)
 
 --
diff --git a/src/test/regress/output/tablespace.source b/src/test/regress/output/tablespace.source
index 1e1e02b589..025c9709a1 100644
--- a/src/test/regress/output/tablespace.source
+++ b/src/test/regress/output/tablespace.source
@@ -17,15 +17,15 @@ CREATE TABLESPACE regress_tblspace LOCATION '@testtablespace@';
 -- The name='' condition is never true, so the function runs to completion but returns zero rows.
 -- The query is written to ERROR if the tablespace doesn't exist, rather than silently failing to call pg_ls_tmpdir()
 SELECT c.* FROM (SELECT oid FROM pg_tablespace b WHERE b.spcname='regress_tblspace' UNION SELECT 0 ORDER BY 1 DESC LIMIT 1) AS b , pg_ls_tmpdir(oid) AS c WHERE c.name='Does not exist';
- name | size | access | modification | change | creation | isdir 
-------+------+--------+--------------+--------+----------+-------
+ name | size | access | modification | change | creation | type 
+------+------+--------+--------------+--------+----------+------
 (0 rows)
 
 -- This tests the missing_ok parameter.  If that's not functioning, this would ERROR if the logdir doesn't exist yet.
 -- The name='' condition is never true, so the function runs to completion but returns zero rows.
 SELECT * FROM pg_ls_logdir() WHERE name='Does not exist';
- name | size | access | modification | change | creation | isdir 
-------+------+--------+--------------+--------+----------+-------
+ name | size | access | modification | change | creation | type 
+------+------+--------+--------------+--------+----------+------
 (0 rows)
 
 -- try setting and resetting some properties for the new tablespace
diff --git a/src/test/regress/sql/misc_functions.sql b/src/test/regress/sql/misc_functions.sql
index fda95828d7..b87965a1bd 100644
--- a/src/test/regress/sql/misc_functions.sql
+++ b/src/test/regress/sql/misc_functions.sql
@@ -69,15 +69,15 @@ select pg_ls_dir('does not exist'); -- fails with missingok=false
 -- The name='' condition is never true, so the function runs to completion but returns zero rows.
 select * from pg_ls_tmpdir() where name='Does not exist';
 
-select filename, isdir from pg_ls_dir_metadata('.') where filename='.';
+select filename, type from pg_ls_dir_metadata('.') where filename='.';
 
-select filename, isdir from pg_ls_dir_metadata('.', false, false) where filename='.'; -- include_dot_dirs=false
+select filename, type from pg_ls_dir_metadata('.', false, false) where filename='.'; -- include_dot_dirs=false
 
 -- Check that expected columns are present
 select * from pg_ls_dir_metadata('.') limit 0;
 
 -- Check that we at least succeed in recursing once, and that we don't show the leading dir prefix
-select path, filename, isdir from pg_ls_dir_recurse('.') where isdir and path='pg_wal';
+select path, filename, type from pg_ls_dir_recurse('.') where type='d' and path='pg_wal';
 
 -- Check that expected columns are present
 select * from pg_ls_dir_recurse('.') limit 0;
-- 
2.17.0

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