Lines Matching +full:conf +full:- +full:pd
1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
110 td->td_retval[0] = pid;
111 td->td_retval[1] = 0;
127 fr.fr_pd_flags = uap->flags;
128 AUDIT_ARG_FFLAGS(uap->flags);
136 td->td_retval[0] = pid;
137 td->td_retval[1] = 0;
138 error = copyout(&fd, uap->fdp, sizeof(fd));
155 td->td_retval[0] = pid;
156 td->td_retval[1] = 0;
167 /* Don't allow kernel-only flags. */
168 if ((uap->flags & RFKERNELONLY) != 0)
171 if ((uap->flags & RFSPAWN) != 0 && uap->flags != RFSPAWN)
174 AUDIT_ARG_FFLAGS(uap->flags);
176 if ((uap->flags & RFSPAWN) != 0) {
180 fr.fr_flags = uap->flags;
185 td->td_retval[0] = pid;
186 td->td_retval[1] = 0;
217 if (error == 0 && req->newptr != NULL) {
223 else if (pid < 0 || pid > pid_max - 100)
225 randompid = pid_max - 100;
250 * low-numbered pids.
279 if (result == -1) {
311 p1 = td->td_proc;
318 if ((p1->p_flag & (P_HADTHREADS | P_SYSTEM)) == P_HADTHREADS &&
339 pdtmp = pdinit(td->td_proc->p_pd, false);
343 p1->p_fd = fdtmp;
344 p1->p_pd = pdtmp;
356 if ((p1->p_flag & (P_HADTHREADS | P_SYSTEM)) == P_HADTHREADS &&
372 struct pwddesc *pd;
375 p1 = td->td_proc;
378 bcopy(&p1->p_startcopy, &p2->p_startcopy,
380 pargs_hold(p2->p_args);
383 bzero(&p2->p_startzero,
387 prison_proc_hold(p2->p_ucred->cr_prison);
389 p2->p_state = PRS_NEW; /* protect against others */
390 p2->p_pid = fork_findpid(fr->fr_flags);
391 AUDIT_ARG_PID(p2->p_pid);
392 TSFORK(p2->p_pid, p1->p_pid);
397 prison_proc_link(p2->p_ucred->cr_prison, p2);
400 sx_xlock(PIDHASHLOCK(p2->p_pid));
401 LIST_INSERT_HEAD(PIDHASH(p2->p_pid), p2, p_hash);
402 sx_xunlock(PIDHASHLOCK(p2->p_pid));
409 if (fr->fr_flags & RFSIGSHARE)
417 if (fr->fr_flags & RFCFDG) {
418 pd = pdinit(p1->p_pd, false);
421 } else if (fr->fr_flags & RFFDG) {
422 if (fr->fr_flags2 & FR2_SHARE_PATHS)
423 pd = pdshare(p1->p_pd);
425 pd = pdcopy(p1->p_pd);
426 fd = fdcopy(p1->p_fd);
429 if (fr->fr_flags2 & FR2_SHARE_PATHS)
430 pd = pdcopy(p1->p_pd);
432 pd = pdshare(p1->p_pd);
433 fd = fdshare(p1->p_fd);
434 if (p1->p_fdtol == NULL)
435 p1->p_fdtol = filedesc_to_leader_alloc(NULL, NULL,
436 p1->p_leader);
437 if ((fr->fr_flags & RFTHREAD) != 0) {
442 fdtol = filedesc_to_leader_share(p1->p_fdtol, p1->p_fd);
448 fdtol = filedesc_to_leader_alloc(p1->p_fdtol,
449 p1->p_fd, p2);
454 * Start by zeroing the section of proc that is zero-initialized,
461 bzero(&td2->td_startzero,
464 bcopy(&td->td_startcopy, &td2->td_startcopy,
467 bcopy(&p2->p_comm, &td2->td_name, sizeof(td2->td_name));
468 td2->td_sigstk = td->td_sigstk;
469 td2->td_flags = TDF_INMEM;
470 td2->td_lend_user_pri = PRI_MAX;
473 td2->td_vnet = NULL;
474 td2->td_vnet_lpush = NULL;
486 if ((fr->fr_flags & RFPPWAIT) != 0)
491 * Duplicate sub-structures as needed.
494 p2->p_flag = P_INMEM;
495 p2->p_flag2 = p1->p_flag2 & (P2_ASLR_DISABLE | P2_ASLR_ENABLE |
501 p2->p_swtick = ticks;
502 if (p1->p_flag & P_PROFIL)
505 if (fr->fr_flags & RFSIGSHARE) {
506 p2->p_sigacts = sigacts_hold(p1->p_sigacts);
508 sigacts_copy(newsigacts, p1->p_sigacts);
509 p2->p_sigacts = newsigacts;
510 if ((fr->fr_flags2 & (FR2_DROPSIG_CAUGHT | FR2_KPROC)) != 0) {
511 mtx_lock(&p2->p_sigacts->ps_mtx);
512 if ((fr->fr_flags2 & FR2_DROPSIG_CAUGHT) != 0)
514 if ((fr->fr_flags2 & FR2_KPROC) != 0)
515 p2->p_sigacts->ps_flag |= PS_NOCLDWAIT;
516 mtx_unlock(&p2->p_sigacts->ps_mtx);
520 if (fr->fr_flags & RFTSIGZMB)
521 p2->p_sigparent = RFTSIGNUM(fr->fr_flags);
522 else if (fr->fr_flags & RFLINUXTHPN)
523 p2->p_sigparent = SIGUSR1;
525 p2->p_sigparent = SIGCHLD;
527 if ((fr->fr_flags2 & FR2_KPROC) != 0) {
528 p2->p_flag |= P_SYSTEM | P_KPROC;
529 td2->td_pflags |= TDP_KTHREAD;
532 p2->p_textvp = p1->p_textvp;
533 p2->p_textdvp = p1->p_textdvp;
534 p2->p_fd = fd;
535 p2->p_fdtol = fdtol;
536 p2->p_pd = pd;
538 if (p1->p_flag2 & P2_INHERIT_PROTECTED) {
539 p2->p_flag |= P_PROTECTED;
540 p2->p_flag2 |= P2_INHERIT_PROTECTED;
544 * p_limit is copy-on-write. Bump its refcount.
550 pstats_fork(p1->p_stats, p2->p_stats);
559 if (p2->p_textvp != NULL)
560 vrefact(p2->p_textvp);
561 if (p2->p_textdvp != NULL)
562 vrefact(p2->p_textdvp);
563 p2->p_binname = p1->p_binname == NULL ? NULL :
564 strdup(p1->p_binname, M_PARGS);
569 if ((fr->fr_flags & RFTHREAD) != 0) {
571 p2->p_peers = p1->p_peers;
572 p1->p_peers = p2;
573 p2->p_leader = p1->p_leader;
575 PROC_LOCK(p1->p_leader);
576 if ((p1->p_leader->p_flag & P_WEXIT) != 0) {
577 PROC_UNLOCK(p1->p_leader);
595 PROC_UNLOCK(p1->p_leader);
597 p2->p_peers = NULL;
598 p2->p_leader = p2;
602 PGRP_LOCK(p1->p_pgrp);
610 p2->p_flag |= p1->p_flag & P_SUGID;
611 td2->td_pflags |= (td->td_pflags & (TDP_ALTSTACK | TDP_SIGFASTBLOCK));
612 SESS_LOCK(p1->p_session);
613 if (p1->p_session->s_ttyvp != NULL && p1->p_flag & P_CONTROLT)
614 p2->p_flag |= P_CONTROLT;
615 SESS_UNLOCK(p1->p_session);
616 if (fr->fr_flags & RFPPWAIT)
617 p2->p_flag |= P_PPWAIT;
619 p2->p_pgrp = p1->p_pgrp;
621 PGRP_UNLOCK(p1->p_pgrp);
622 LIST_INIT(&p2->p_children);
623 LIST_INIT(&p2->p_orphans);
625 callout_init_mtx(&p2->p_itcallout, &p2->p_mtx, 0);
641 if ((fr->fr_flags & RFNOWAIT) != 0) {
642 pptr = p1->p_reaper;
643 p2->p_reaper = pptr;
645 p2->p_reaper = (p1->p_treeflag & P_TREE_REAPER) != 0 ?
646 p1 : p1->p_reaper;
649 p2->p_pptr = pptr;
650 p2->p_oppid = pptr->p_pid;
651 LIST_INSERT_HEAD(&pptr->p_children, p2, p_sibling);
652 LIST_INIT(&p2->p_reaplist);
653 LIST_INSERT_HEAD(&p2->p_reaper->p_reaplist, p2, p_reapsibling);
654 if (p2->p_reaper == p1 && p1 != initproc) {
655 p2->p_reapsubtree = p2->p_pid;
656 proc_id_set_cond(PROC_ID_REAP, p2->p_pid);
661 p2->p_acflag = AFORK;
672 vm_forkproc(td, p2, td2, vm2, fr->fr_flags);
674 if (fr->fr_flags == (RFFDG | RFPROC)) {
676 VM_CNT_ADD(v_forkpages, p2->p_vmspace->vm_dsize +
677 p2->p_vmspace->vm_ssize);
678 } else if (fr->fr_flags == (RFFDG | RFPROC | RFPPWAIT | RFMEM)) {
680 VM_CNT_ADD(v_vforkpages, p2->p_vmspace->vm_dsize +
681 p2->p_vmspace->vm_ssize);
684 VM_CNT_ADD(v_kthreadpages, p2->p_vmspace->vm_dsize +
685 p2->p_vmspace->vm_ssize);
688 VM_CNT_ADD(v_rforkpages, p2->p_vmspace->vm_dsize +
689 p2->p_vmspace->vm_ssize);
697 if (fr->fr_flags & RFPROCDESC)
698 procdesc_new(p2, fr->fr_pd_flags);
704 EVENTHANDLER_DIRECT_INVOKE(process_fork, p1, p2, fr->fr_flags);
711 microuptime(&p2->p_stats->p_start);
713 p2->p_state = PRS_NORMAL;
723 if ((fr->fr_flags & RFMEM) == 0 && dtrace_fasttrap_fork)
726 if (fr->fr_flags & RFPPWAIT) {
727 td->td_pflags |= TDP_RFPPWAIT;
728 td->td_rfppwait_p = p2;
729 td->td_dbgflags |= TDB_VFORK;
736 knote_fork(p1->p_klist, p2->p_pid);
743 SDT_PROBE3(proc, , , create, p2, p1, fr->fr_flags);
745 if (fr->fr_flags & RFPROCDESC) {
746 procdesc_finit(p2->p_procdesc, fp_procdesc);
755 if ((p1->p_ptevents & PTRACE_FORK) != 0) {
760 * p1->p_ptevents & p1->p_pptr are protected by both
762 * so owning proctree_lock allows the race-free read.
764 if ((p1->p_ptevents & PTRACE_FORK) != 0) {
772 td->td_dbgflags |= TDB_FORK;
773 td->td_dbg_forked = p2->p_pid;
774 td2->td_dbgflags |= TDB_STOPATFORK;
778 p2->p_pid, p2->p_oppid);
779 proc_reparent(p2, p1->p_pptr, false);
787 if ((fr->fr_flags & RFSTOPPED) == 0) {
788 if (fr->fr_pidp != NULL)
789 *fr->fr_pidp = p2->p_pid;
798 *fr->fr_procp = p2;
807 MPASS(td->td_pflags & TDP_RFPPWAIT);
809 p = td->td_proc;
820 td->td_pflags &= ~TDP_RFPPWAIT;
821 p2 = td->td_rfppwait_p;
824 while (p2->p_flag & P_PPWAIT) {
834 cv_timedwait(&p2->p_pwait, &p2->p_mtx, hz);
838 if (td->td_dbgflags & TDB_VFORK) {
840 if (p->p_ptevents & PTRACE_VFORK)
842 td->td_dbgflags &= ~TDB_VFORK;
863 flags = fr->fr_flags;
864 pages = fr->fr_pages;
867 MPASS(fr->fr_procp != NULL && fr->fr_pidp == NULL);
869 MPASS(fr->fr_procp == NULL);
893 if (fr->fr_pd_fd == NULL)
897 if ((fr->fr_pd_flags & ~PD_ALLOWED_AT_FORK) != 0)
901 p1 = td->td_proc;
908 if (fr->fr_procp != NULL)
909 *fr->fr_procp = NULL;
910 else if (fr->fr_pidp != NULL)
911 *fr->fr_pidp = 0;
925 * create. There are hard-limits as to the number of processes
933 if (nprocs_new >= maxproc - 10) {
934 if (priv_check_cred(td->td_ucred, PRIV_MAXPROC) != 0 ||
941 "login.conf(5)\n",
942 td->td_ucred->cr_ruid, p1->p_pid);
950 * If we are possibly multi-threaded, and there is a process
956 pg = p1->p_pgrp;
957 if (p1->p_numthreads > 1) {
958 if (sx_try_slock(&pg->pg_killsx) != 0) {
976 if (!killsx_locked && sx_slock_sig(&pg->pg_killsx) != 0) {
980 if (__predict_false(p1->p_pgrp != pg || sig_intr() != 0)) {
987 sx_sunlock(&pg->pg_killsx);
1001 error = procdesc_falloc(td, &fp_procdesc, fr->fr_pd_fd,
1002 fr->fr_pd_flags, fr->fr_pd_fcaps);
1005 AUDIT_ARG_FD(*fr->fr_pd_fd);
1028 vm2 = vmspace_fork(p1->p_vmspace, &mem_charged);
1049 * per-cred resource counters.
1051 newproc->p_ucred = crcowget(td->td_ucred);
1065 newproc->p_klist = knlist_alloc(&newproc->p_mtx);
1066 STAILQ_INIT(&newproc->p_ktr);
1072 cred = td->td_ucred;
1073 if (!chgproccnt(cred->cr_ruidinfo, 1, lim_cur(td, RLIMIT_NPROC))) {
1076 chgproccnt(cred->cr_ruidinfo, 1, 0);
1095 fdclose(td, fp_procdesc, *fr->fr_pd_fd);
1098 atomic_add_int(&nprocs, -1);
1101 sx_sunlock(&pg->pg_killsx);
1127 p = td->td_proc;
1128 KASSERT(p->p_state == PRS_NORMAL, ("executing process is still new"));
1131 td, td_get_sched(td), p->p_pid, td->td_name);
1148 * have this call a non-return function to stay in kernel mode.
1158 if (p->p_flag & P_KPROC) {
1160 td->td_name, p->p_pid);
1169 if (p->p_sysent->sv_schedtail != NULL)
1170 (p->p_sysent->sv_schedtail)(td);
1186 p = td->td_proc;
1187 if (td->td_dbgflags & TDB_STOPATFORK) {
1189 if ((p->p_flag & P_TRACED) != 0) {
1193 td->td_dbgflags |= TDB_CHILD | TDB_SCX | TDB_FSTP;
1195 td->td_dbgflags &= ~(TDB_CHILD | TDB_SCX);
1200 td->td_dbgflags &= ~TDB_STOPATFORK;
1203 } else if (p->p_flag & P_TRACED) {
1209 td->td_dbgflags |= TDB_SCX;
1210 if ((p->p_ptevents & PTRACE_SCX) != 0 ||
1211 (td->td_dbgflags & TDB_BORN) != 0)
1213 td->td_dbgflags &= ~(TDB_SCX | TDB_BORN);
1218 * If the prison was killed mid-fork, die along with it.
1220 if (!prison_isalive(td->td_ucred->cr_prison))
1225 ktrsysret(td->td_sa.code, 0, 0);