Required superuser privileges or membership in the pg_write_server_files role to call the pg_file_write(), pg_file_rename(), and pg_file_unlink() functions, and in the pg_read_server_files role to call pg_logdir_ls()
pg_write_server_files
pg_file_write()
pg_file_rename()
pg_file_unlink()
pg_read_server_files
pg_logdir_ls()