366 do_fork(struct thread *td, struct fork_req *fr, struct proc *p2, struct thread *td2,  in do_fork()  argument
378 	bcopy(&p1->p_startcopy, &p2->p_startcopy,  in do_fork()
380 	pargs_hold(p2->p_args);  in do_fork()
383 	bzero(&p2->p_startzero,  in do_fork()
387 	prison_proc_hold(p2->p_ucred->cr_prison);  in do_fork()
389 	p2->p_state = PRS_NEW;		/* protect against others */  in do_fork()
390 	p2->p_pid = fork_findpid(fr->fr_flags);  in do_fork()
391 	AUDIT_ARG_PID(p2->p_pid);  in do_fork()
392 	TSFORK(p2->p_pid, p1->p_pid);  in do_fork()
395 	LIST_INSERT_HEAD(&allproc, p2, p_list);  in do_fork()
397 	prison_proc_link(p2->p_ucred->cr_prison, p2);  in do_fork()
400 	sx_xlock(PIDHASHLOCK(p2->p_pid));  in do_fork()
401 	LIST_INSERT_HEAD(PIDHASH(p2->p_pid), p2, p_hash);  in do_fork()
402 	sx_xunlock(PIDHASHLOCK(p2->p_pid));  in do_fork()
449 			    p1->p_fd, p2);  in do_fork()
458 	PROC_LOCK(p2);  in do_fork()
467 	bcopy(&p2->p_comm, &td2->td_name, sizeof(td2->td_name));  in do_fork()
494 	p2->p_flag = P_INMEM;  in do_fork()
495 	p2->p_flag2 = p1->p_flag2 & (P2_ASLR_DISABLE | P2_ASLR_ENABLE |  in do_fork()
501 	p2->p_swtick = ticks;  in do_fork()
503 		startprofclock(p2);  in do_fork()
506 		p2->p_sigacts = sigacts_hold(p1->p_sigacts);  in do_fork()
509 		p2->p_sigacts = newsigacts;  in do_fork()
511 			mtx_lock(&p2->p_sigacts->ps_mtx);  in do_fork()
513 				sig_drop_caught(p2);  in do_fork()
515 				p2->p_sigacts->ps_flag |= PS_NOCLDWAIT;  in do_fork()
516 			mtx_unlock(&p2->p_sigacts->ps_mtx);  in do_fork()
521 	        p2->p_sigparent = RFTSIGNUM(fr->fr_flags);  in do_fork()
523 	        p2->p_sigparent = SIGUSR1;  in do_fork()
525 	        p2->p_sigparent = SIGCHLD;  in do_fork()
528 		p2->p_flag |= P_SYSTEM | P_KPROC;  in do_fork()
532 	p2->p_textvp = p1->p_textvp;  in do_fork()
533 	p2->p_textdvp = p1->p_textdvp;  in do_fork()
534 	p2->p_fd = fd;  in do_fork()
535 	p2->p_fdtol = fdtol;  in do_fork()
536 	p2->p_pd = pd;  in do_fork()
539 		p2->p_flag |= P_PROTECTED;  in do_fork()
540 		p2->p_flag2 |= P2_INHERIT_PROTECTED;  in do_fork()
546 	lim_fork(p1, p2);  in do_fork()
548 	thread_cow_get_proc(td2, p2);  in do_fork()
550 	pstats_fork(p1->p_stats, p2->p_stats);  in do_fork()
553 	PROC_UNLOCK(p2);  in do_fork()
559 	if (p2->p_textvp != NULL)  in do_fork()
560 		vrefact(p2->p_textvp);  in do_fork()
561 	if (p2->p_textdvp != NULL)  in do_fork()
562 		vrefact(p2->p_textdvp);  in do_fork()
563 	p2->p_binname = p1->p_binname == NULL ? NULL :  in do_fork()
571 		p2->p_peers = p1->p_peers;  in do_fork()
572 		p1->p_peers = p2;  in do_fork()
573 		p2->p_leader = p1->p_leader;  in do_fork()
591 			PROC_LOCK(p2);  in do_fork()
592 			kern_psignal(p2, SIGKILL);  in do_fork()
593 			PROC_UNLOCK(p2);  in do_fork()
597 		p2->p_peers = NULL;  in do_fork()
598 		p2->p_leader = p2;  in do_fork()
603 	PROC_LOCK(p2);  in do_fork()
610 	p2->p_flag |= p1->p_flag & P_SUGID;  in do_fork()
614 		p2->p_flag |= P_CONTROLT;  in do_fork()
617 		p2->p_flag |= P_PPWAIT;  in do_fork()
619 	p2->p_pgrp = p1->p_pgrp;  in do_fork()
620 	LIST_INSERT_AFTER(p1, p2, p_pglist);  in do_fork()
622 	LIST_INIT(&p2->p_children);  in do_fork()
623 	LIST_INIT(&p2->p_orphans);  in do_fork()
625 	callout_init_mtx(&p2->p_itcallout, &p2->p_mtx, 0);  in do_fork()
643 		p2->p_reaper = pptr;  in do_fork()
645 		p2->p_reaper = (p1->p_treeflag & P_TREE_REAPER) != 0 ?  in do_fork()
649 	p2->p_pptr = pptr;  in do_fork()
650 	p2->p_oppid = pptr->p_pid;  in do_fork()
651 	LIST_INSERT_HEAD(&pptr->p_children, p2, p_sibling);  in do_fork()
652 	LIST_INIT(&p2->p_reaplist);  in do_fork()
653 	LIST_INSERT_HEAD(&p2->p_reaper->p_reaplist, p2, p_reapsibling);  in do_fork()
654 	if (p2->p_reaper == p1 && p1 != initproc) {  in do_fork()
655 		p2->p_reapsubtree = p2->p_pid;  in do_fork()
656 		proc_id_set_cond(PROC_ID_REAP, p2->p_pid);  in do_fork()
661 	p2->p_acflag = AFORK;  in do_fork()
662 	PROC_UNLOCK(p2);  in do_fork()
665 	ktrprocfork(p1, p2);  in do_fork()
672 	vm_forkproc(td, p2, td2, vm2, fr->fr_flags);  in do_fork()
676 		VM_CNT_ADD(v_forkpages, p2->p_vmspace->vm_dsize +  in do_fork()
677 		    p2->p_vmspace->vm_ssize);  in do_fork()
680 		VM_CNT_ADD(v_vforkpages, p2->p_vmspace->vm_dsize +  in do_fork()
681 		    p2->p_vmspace->vm_ssize);  in do_fork()
684 		VM_CNT_ADD(v_kthreadpages, p2->p_vmspace->vm_dsize +  in do_fork()
685 		    p2->p_vmspace->vm_ssize);  in do_fork()
688 		VM_CNT_ADD(v_rforkpages, p2->p_vmspace->vm_dsize +  in do_fork()
689 		    p2->p_vmspace->vm_ssize);  in do_fork()
698 		procdesc_new(p2, fr->fr_pd_flags);  in do_fork()
704 	EVENTHANDLER_DIRECT_INVOKE(process_fork, p1, p2, fr->fr_flags);  in do_fork()
709 	PROC_LOCK(p2);  in do_fork()
711 	microuptime(&p2->p_stats->p_start);  in do_fork()
712 	PROC_SLOCK(p2);  in do_fork()
713 	p2->p_state = PRS_NORMAL;  in do_fork()
714 	PROC_SUNLOCK(p2);  in do_fork()
724 		dtrace_fasttrap_fork(p1, p2);  in do_fork()
728 		td->td_rfppwait_p = p2;  in do_fork()
731 	PROC_UNLOCK(p2);  in do_fork()
736 	knote_fork(p1->p_klist, p2->p_pid);  in do_fork()
743 	SDT_PROBE3(proc, , , create, p2, p1, fr->fr_flags);  in do_fork()
746 		procdesc_finit(p2->p_procdesc, fp_procdesc);  in do_fork()
757 		PROC_LOCK(p2);  in do_fork()
773 			td->td_dbg_forked = p2->p_pid;  in do_fork()
775 			proc_set_traced(p2, true);  in do_fork()
778 			    p2->p_pid, p2->p_oppid);  in do_fork()
779 			proc_reparent(p2, p1->p_pptr, false);  in do_fork()
781 		PROC_UNLOCK(p2);  in do_fork()
785 	racct_proc_fork_done(p2);  in do_fork()
789 			*fr->fr_pidp = p2->p_pid;  in do_fork()
798 		*fr->fr_procp = p2;  in do_fork()
805 	struct proc *p, *p2;  in ast_vfork()  local
821 	p2 = td->td_rfppwait_p;  in ast_vfork()
823 	PROC_LOCK(p2);  in ast_vfork()
824 	while (p2->p_flag & P_PPWAIT) {  in ast_vfork()
827 			PROC_UNLOCK(p2);  in ast_vfork()
834 		cv_timedwait(&p2->p_pwait, &p2->p_mtx, hz);  in ast_vfork()
836 	PROC_UNLOCK(p2);  in ast_vfork()