my_sid            418 src/subshell/common.c     pid_t my_sid, old_sid;
my_sid            430 src/subshell/common.c     my_sid = getsid (0);
my_sid            431 src/subshell/common.c     if (my_sid == -1)
my_sid            435 src/subshell/common.c     if (old_sid != my_sid)