sys/kern/kern_fork.c

327 	struct proc *p1;
331 	p1 = td->td_proc;
333 	if (((p1->p_flag & (P_HADTHREADS|P_SYSTEM)) == P_HADTHREADS) &&
335 		PROC_LOCK(p1);
336 		if (thread_single(p1, SINGLE_BOUNDARY)) {
337 			PROC_UNLOCK(p1);
340 		PROC_UNLOCK(p1);
354 		p1->p_fd = fdtmp;
364 	if (((p1->p_flag & (P_HADTHREADS|P_SYSTEM)) == P_HADTHREADS) &&
366 		PROC_LOCK(p1);
367 		thread_single_end(p1, SINGLE_BOUNDARY);
368 		PROC_UNLOCK(p1);
377 	struct proc *p1, *pptr;
387 	p1 = td->td_proc;
407 	PROC_LOCK(p1);
411 	bcopy(&p1->p_startcopy, &p2->p_startcopy,
414 	PROC_UNLOCK(p1);
439 		fd = fdinit(p1->p_fd);
442 		fd = fdcopy(p1->p_fd);
445 		fd = fdshare(p1->p_fd);
446 		if (p1->p_fdtol == NULL)
447 			p1->p_fdtol = filedesc_to_leader_alloc(NULL, NULL,
448 			    p1->p_leader);
454 			fdtol = p1->p_fdtol;
455 			FILEDESC_XLOCK(p1->p_fd);
457 			FILEDESC_XUNLOCK(p1->p_fd);
463 			fdtol = filedesc_to_leader_alloc(p1->p_fdtol,
464 			    p1->p_fd, p2);
474 	PROC_LOCK(p1);
505 	p2->p_flag2 = p1->p_flag2 & (P2_NOTRACE | P2_NOTRACE_EXEC);
507 	if (p1->p_flag & P_PROFIL)
512 		p2->p_sigacts = sigacts_hold(p1->p_sigacts);
514 		sigacts_copy(newsigacts, p1->p_sigacts);
525 	p2->p_textvp = p1->p_textvp;
529 	if (p1->p_flag2 & P2_INHERIT_PROTECTED) {
537 	lim_fork(p1, p2);
539 	pstats_fork(p1->p_stats, p2->p_stats);
541 	PROC_UNLOCK(p1);
553 		p2->p_peers = p1->p_peers;
554 		p1->p_peers = p2;
555 		p2->p_leader = p1->p_leader;
557 		PROC_LOCK(p1->p_leader);
558 		if ((p1->p_leader->p_flag & P_WEXIT) != 0) {
559 			PROC_UNLOCK(p1->p_leader);
561 			 * The task leader is exiting, so process p1 is
562 			 * going to be killed shortly.  Since p1 obviously
566 			 * exit.  We let p1 complete the fork, but we need
577 			PROC_UNLOCK(p1->p_leader);
584 	PGRP_LOCK(p1->p_pgrp);
586 	PROC_LOCK(p1);
592 	p2->p_flag |= p1->p_flag & P_SUGID;
594 	SESS_LOCK(p1->p_session);
595 	if (p1->p_session->s_ttyvp != NULL && p1->p_flag & P_CONTROLT)
597 	SESS_UNLOCK(p1->p_session);
601 	p2->p_pgrp = p1->p_pgrp;
602 	LIST_INSERT_AFTER(p1, p2, p_pglist);
603 	PGRP_UNLOCK(p1->p_pgrp);
613 	if (p1->p_pfsflags & PF_FORK) {
614 		p2->p_stops = p1->p_stops;
615 		p2->p_pfsflags = p1->p_pfsflags;
622 	_PHOLD(p1);
623 	PROC_UNLOCK(p1);
633 		pptr = p1->p_reaper;
636 		p2->p_reaper = (p1->p_treeflag & P_TREE_REAPER) != 0 ?
637 		    p1 : p1->p_reaper;
638 		pptr = p1;
644 	if (p2->p_reaper == p1)
647 		p2->p_reapsubtree = p1->p_reapsubtree;
655 	ktrprocfork(p1, p2);
672 	} else if (p1 == &proc0) {
696 	EVENTHANDLER_INVOKE(process_fork, p1, p2, flags);
702 	PROC_LOCK(p1);
716 		dtrace_fasttrap_fork(p1, p2);
718 	if ((p1->p_flag & (P_TRACED | P_FOLLOWFORK)) == (P_TRACED |
752 	_PRELE(p1);
753 	PROC_UNLOCK(p1);
758 	knote_fork(&p1->p_klist, p2->p_pid);
759 	SDT_PROBE(proc, kernel, , create, p2, p1, flags, 0, 0);
776 	struct proc *p1;
817 	p1 = td->td_proc;
867 		vm2 = vmspace_fork(p1->p_vmspace, &mem_charged);
890 	newproc->p_ucred = p1->p_ucred;
895 	error = racct_proc_fork(p1, newproc);
934 		PROC_LOCK(p1);
936 		    lim_cur(p1, RLIMIT_NPROC));
937 		PROC_UNLOCK(p1);
961 		    td->td_ucred->cr_ruid, p1->p_pid);