diff --git a/doc/src/sgml/ref/copy.sgml b/doc/src/sgml/ref/copy.sgml
index 2850b47..eb53ddf 100644
--- a/doc/src/sgml/ref/copy.sgml
+++ b/doc/src/sgml/ref/copy.sgml
@@ -44,6 +44,7 @@ COPY { <replaceable class="parameter">table_name</replaceable> [ ( <replaceable
     FORCE_NOT_NULL ( <replaceable class="parameter">column_name</replaceable> [, ...] )
     FORCE_NULL ( <replaceable class="parameter">column_name</replaceable> [, ...] )
     ENCODING '<replaceable class="parameter">encoding_name</replaceable>'
+    NO READ ACCESS
 </synopsis>
  </refsynopsisdiv>
 
@@ -356,7 +357,17 @@ COPY { <replaceable class="parameter">table_name</replaceable> [ ( <replaceable
      </para>
     </listitem>
    </varlistentry>
-
+   
+   <varlistentry>
+    <term><literal>NO READ ACCESS</></term>
+    <listitem>
+     <para>
+     This specifies, do not give any read access to non instance owner members.
+     If this option is omitted, copy gives read access to all members, which is the default behaviour.
+     </para>
+    </listitem>
+   </varlistentry>
+   
   </variablelist>
  </refsect1>
 
diff --git a/src/backend/commands/copy.c b/src/backend/commands/copy.c
index 8db1b35..367d430 100644
--- a/src/backend/commands/copy.c
+++ b/src/backend/commands/copy.c
@@ -133,7 +133,7 @@ typedef struct CopyStateData
 	bool		convert_selectively;	/* do selective binary conversion? */
 	List	   *convert_select; /* list of column names (can be NIL) */
 	bool	   *convert_select_flags;	/* per-column CSV/TEXT CS flags */
-
+	bool		is_no_read_acc;
 	/* these are just for error messages, see CopyFromErrorCallback */
 	const char *cur_relname;	/* table name for error messages */
 	int			cur_lineno;		/* line number for error messages */
@@ -1153,6 +1153,14 @@ ProcessCopyOptions(CopyState cstate,
 						 errmsg("argument to option \"%s\" must be a valid encoding name",
 								defel->defname)));
 		}
+		else if (strcmp(defel->defname, "is_no_read_acc") == 0)
+		{
+			if (cstate->is_no_read_acc)
+				ereport(ERROR,
+						(errcode(ERRCODE_SYNTAX_ERROR),
+						 errmsg("conflicting or redundant options")));
+			cstate->is_no_read_acc = true;
+		}
 		else
 			ereport(ERROR,
 					(errcode(ERRCODE_SYNTAX_ERROR),
@@ -1302,6 +1310,11 @@ ProcessCopyOptions(CopyState cstate,
 		ereport(ERROR,
 				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
 				 errmsg("CSV quote character must not appear in the NULL specification")));
+
+	if ( cstate->is_no_read_acc && is_from )
+		ereport(ERROR,
+				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+				 errmsg("COPY owner access only available using COPY TO file")));
 }
 
 /*
@@ -1723,7 +1736,11 @@ BeginCopyTo(Relation rel,
 						(errcode(ERRCODE_INVALID_NAME),
 					  errmsg("relative path not allowed for COPY to file")));
 
-			oumask = umask(S_IWGRP | S_IWOTH);
+			if (cstate->is_no_read_acc)
+				oumask = umask(S_IWGRP | S_IRGRP | S_IWOTH | S_IROTH);
+			else
+				oumask = umask(S_IWGRP | S_IWOTH);
+
 			cstate->copy_file = AllocateFile(cstate->filename, PG_BINARY_W);
 			umask(oumask);
 			if (cstate->copy_file == NULL)
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 1efc6d6..5dc5cbd 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -2712,6 +2712,10 @@ copy_opt_item:
 				{
 					$$ = makeDefElem("encoding", (Node *)makeString($2));
 				}
+			| NO READ ACCESS
+				{
+					$$ = makeDefElem("is_no_read_acc", (Node *)makeInteger(TRUE));
+				}
 		;
 
 /* The following exist for backward compatibility with very old versions */