PIDFILE
pidfile_statement: PIDFILE STR
%token CONTROL PIDFILE LISTEN REPLICATION CHECKSUM COMPRESSION METAFLUSH
pidName = PIDFILE;
const char *pidfile = PIDDIR PIDFILE;
pidfile: PIDFILE STR
%token PATH PCP PIDFILE PORT PORTAL_GROUP REDIRECT SEMICOLON SERIAL
snprintf(ctx->pidfile, 127, PIDFILE, ctx->ifnam);
snprintf(pidfile, 127, PIDFILE, ifnam);