tag	line	file	source code
pgid	354	kernel/sys.c	int sys_setpgid(int pid, int pgid)
pgid	360	kernel/sys.c	if (!pgid)
pgid	361	kernel/sys.c	pgid = current->pid;
pgid	362	kernel/sys.c	if (pgid < 0)
pgid	371	kernel/sys.c	((pgid != pid) &&
pgid	372	kernel/sys.c	(session_of_pgrp(pgid) != current->session)))
pgid	374	kernel/sys.c	task[i]->pgrp = pgid;