shmgetid
if ((ipc_id = shmgetid(optarg)) < 0) {
if (shmgetid(p, saddr) != SHMID_NONE) {
(mp->pr_shmid = shmgetid(p, seg->s_base)) !=
(mp->pr_shmid = shmgetid(p, seg->s_base)) !=
(pmp->pr_shmid = shmgetid(p, seg->s_base)) !=
(pmp->pr_shmid = shmgetid(p, seg->s_base)) !=
p->p_segacct && (mp->pr_shmid = shmgetid(p,
p->p_segacct && (mp->pr_shmid = shmgetid(p,
extern int shmgetid(struct proc *, caddr_t);