2 * Copyright (c) 1982, 1986, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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14 * may be used to endorse or promote products derived from this software
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29 * @(#)kern_proc.c 8.7 (Berkeley) 2/14/95
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include "opt_compat.h"
37 #include "opt_kdtrace.h"
38 #include "opt_ktrace.h"
39 #include "opt_kstack_pages.h"
40 #include "opt_stack.h"
42 #include <sys/param.h>
43 #include <sys/systm.h>
46 #include <sys/kernel.h>
47 #include <sys/limits.h>
49 #include <sys/loginclass.h>
50 #include <sys/malloc.h>
52 #include <sys/mount.h>
53 #include <sys/mutex.h>
55 #include <sys/ptrace.h>
56 #include <sys/refcount.h>
57 #include <sys/resourcevar.h>
58 #include <sys/rwlock.h>
60 #include <sys/sysent.h>
61 #include <sys/sched.h>
63 #include <sys/stack.h>
65 #include <sys/sysctl.h>
66 #include <sys/filedesc.h>
68 #include <sys/signalvar.h>
73 #include <sys/vnode.h>
74 #include <sys/eventhandler.h>
81 #include <vm/vm_param.h>
82 #include <vm/vm_extern.h>
84 #include <vm/vm_map.h>
85 #include <vm/vm_object.h>
86 #include <vm/vm_page.h>
89 #ifdef COMPAT_FREEBSD32
90 #include <compat/freebsd32/freebsd32.h>
91 #include <compat/freebsd32/freebsd32_util.h>
94 SDT_PROVIDER_DEFINE(proc);
95 SDT_PROBE_DEFINE4(proc, kernel, ctor, entry, "struct proc *", "int",
97 SDT_PROBE_DEFINE4(proc, kernel, ctor, return, "struct proc *", "int",
99 SDT_PROBE_DEFINE4(proc, kernel, dtor, entry, "struct proc *", "int",
100 "void *", "struct thread *");
101 SDT_PROBE_DEFINE3(proc, kernel, dtor, return, "struct proc *", "int",
103 SDT_PROBE_DEFINE3(proc, kernel, init, entry, "struct proc *", "int",
105 SDT_PROBE_DEFINE3(proc, kernel, init, return, "struct proc *", "int",
108 MALLOC_DEFINE(M_PGRP, "pgrp", "process group header");
109 MALLOC_DEFINE(M_SESSION, "session", "session header");
110 static MALLOC_DEFINE(M_PROC, "proc", "Proc structures");
111 MALLOC_DEFINE(M_SUBPROC, "subproc", "Proc sub-structures");
113 static void doenterpgrp(struct proc *, struct pgrp *);
114 static void orphanpg(struct pgrp *pg);
115 static void fill_kinfo_aggregate(struct proc *p, struct kinfo_proc *kp);
116 static void fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp);
117 static void fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp,
119 static void pgadjustjobc(struct pgrp *pgrp, int entering);
120 static void pgdelete(struct pgrp *);
121 static int proc_ctor(void *mem, int size, void *arg, int flags);
122 static void proc_dtor(void *mem, int size, void *arg);
123 static int proc_init(void *mem, int size, int flags);
124 static void proc_fini(void *mem, int size);
125 static void pargs_free(struct pargs *pa);
126 static struct proc *zpfind_locked(pid_t pid);
129 * Other process lists
131 struct pidhashhead *pidhashtbl;
133 struct pgrphashhead *pgrphashtbl;
135 struct proclist allproc;
136 struct proclist zombproc;
137 struct sx allproc_lock;
138 struct sx proctree_lock;
139 struct mtx ppeers_lock;
140 uma_zone_t proc_zone;
142 int kstack_pages = KSTACK_PAGES;
143 SYSCTL_INT(_kern, OID_AUTO, kstack_pages, CTLFLAG_RD, &kstack_pages, 0,
144 "Kernel stack size in pages");
145 static int vmmap_skip_res_cnt = 0;
146 SYSCTL_INT(_kern, OID_AUTO, proc_vmmap_skip_resident_count, CTLFLAG_RW,
147 &vmmap_skip_res_cnt, 0,
148 "Skip calculation of the pages resident count in kern.proc.vmmap");
150 CTASSERT(sizeof(struct kinfo_proc) == KINFO_PROC_SIZE);
151 #ifdef COMPAT_FREEBSD32
152 CTASSERT(sizeof(struct kinfo_proc32) == KINFO_PROC32_SIZE);
156 * Initialize global process hashing structures.
162 sx_init(&allproc_lock, "allproc");
163 sx_init(&proctree_lock, "proctree");
164 mtx_init(&ppeers_lock, "p_peers", NULL, MTX_DEF);
166 LIST_INIT(&zombproc);
167 pidhashtbl = hashinit(maxproc / 4, M_PROC, &pidhash);
168 pgrphashtbl = hashinit(maxproc / 4, M_PROC, &pgrphash);
169 proc_zone = uma_zcreate("PROC", sched_sizeof_proc(),
170 proc_ctor, proc_dtor, proc_init, proc_fini,
171 UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
176 * Prepare a proc for use.
179 proc_ctor(void *mem, int size, void *arg, int flags)
183 p = (struct proc *)mem;
184 SDT_PROBE4(proc, kernel, ctor , entry, p, size, arg, flags);
185 EVENTHANDLER_INVOKE(process_ctor, p);
186 SDT_PROBE4(proc, kernel, ctor , return, p, size, arg, flags);
191 * Reclaim a proc after use.
194 proc_dtor(void *mem, int size, void *arg)
199 /* INVARIANTS checks go here */
200 p = (struct proc *)mem;
201 td = FIRST_THREAD_IN_PROC(p);
202 SDT_PROBE4(proc, kernel, dtor, entry, p, size, arg, td);
205 KASSERT((p->p_numthreads == 1),
206 ("bad number of threads in exiting process"));
207 KASSERT(STAILQ_EMPTY(&p->p_ktr), ("proc_dtor: non-empty p_ktr"));
209 /* Free all OSD associated to this thread. */
212 EVENTHANDLER_INVOKE(process_dtor, p);
213 if (p->p_ksi != NULL)
214 KASSERT(! KSI_ONQ(p->p_ksi), ("SIGCHLD queue"));
215 SDT_PROBE3(proc, kernel, dtor, return, p, size, arg);
219 * Initialize type-stable parts of a proc (when newly created).
222 proc_init(void *mem, int size, int flags)
226 p = (struct proc *)mem;
227 SDT_PROBE3(proc, kernel, init, entry, p, size, flags);
228 p->p_sched = (struct p_sched *)&p[1];
229 bzero(&p->p_mtx, sizeof(struct mtx));
230 mtx_init(&p->p_mtx, "process lock", NULL, MTX_DEF | MTX_DUPOK);
231 mtx_init(&p->p_slock, "process slock", NULL, MTX_SPIN | MTX_RECURSE);
232 cv_init(&p->p_pwait, "ppwait");
233 cv_init(&p->p_dbgwait, "dbgwait");
234 TAILQ_INIT(&p->p_threads); /* all threads in proc */
235 EVENTHANDLER_INVOKE(process_init, p);
236 p->p_stats = pstats_alloc();
238 SDT_PROBE3(proc, kernel, init, return, p, size, flags);
243 * UMA should ensure that this function is never called.
244 * Freeing a proc structure would violate type stability.
247 proc_fini(void *mem, int size)
252 p = (struct proc *)mem;
253 EVENTHANDLER_INVOKE(process_fini, p);
254 pstats_free(p->p_stats);
255 thread_free(FIRST_THREAD_IN_PROC(p));
256 mtx_destroy(&p->p_mtx);
257 if (p->p_ksi != NULL)
258 ksiginfo_free(p->p_ksi);
260 panic("proc reclaimed");
265 * Is p an inferior of the current process?
268 inferior(struct proc *p)
271 sx_assert(&proctree_lock, SX_LOCKED);
272 PROC_LOCK_ASSERT(p, MA_OWNED);
273 for (; p != curproc; p = proc_realparent(p)) {
281 pfind_locked(pid_t pid)
285 sx_assert(&allproc_lock, SX_LOCKED);
286 LIST_FOREACH(p, PIDHASH(pid), p_hash) {
287 if (p->p_pid == pid) {
289 if (p->p_state == PRS_NEW) {
300 * Locate a process by number; return only "live" processes -- i.e., neither
301 * zombies nor newly born but incompletely initialized processes. By not
302 * returning processes in the PRS_NEW state, we allow callers to avoid
303 * testing for that condition to avoid dereferencing p_ucred, et al.
310 sx_slock(&allproc_lock);
311 p = pfind_locked(pid);
312 sx_sunlock(&allproc_lock);
317 pfind_tid_locked(pid_t tid)
322 sx_assert(&allproc_lock, SX_LOCKED);
323 FOREACH_PROC_IN_SYSTEM(p) {
325 if (p->p_state == PRS_NEW) {
329 FOREACH_THREAD_IN_PROC(p, td) {
330 if (td->td_tid == tid)
340 * Locate a process group by number.
341 * The caller must hold proctree_lock.
347 register struct pgrp *pgrp;
349 sx_assert(&proctree_lock, SX_LOCKED);
351 LIST_FOREACH(pgrp, PGRPHASH(pgid), pg_hash) {
352 if (pgrp->pg_id == pgid) {
361 * Locate process and do additional manipulations, depending on flags.
364 pget(pid_t pid, int flags, struct proc **pp)
369 sx_slock(&allproc_lock);
370 if (pid <= PID_MAX) {
371 p = pfind_locked(pid);
372 if (p == NULL && (flags & PGET_NOTWEXIT) == 0)
373 p = zpfind_locked(pid);
374 } else if ((flags & PGET_NOTID) == 0) {
375 p = pfind_tid_locked(pid);
379 sx_sunlock(&allproc_lock);
382 if ((flags & PGET_CANSEE) != 0) {
383 error = p_cansee(curthread, p);
387 if ((flags & PGET_CANDEBUG) != 0) {
388 error = p_candebug(curthread, p);
392 if ((flags & PGET_ISCURRENT) != 0 && curproc != p) {
396 if ((flags & PGET_NOTWEXIT) != 0 && (p->p_flag & P_WEXIT) != 0) {
400 if ((flags & PGET_NOTINEXEC) != 0 && (p->p_flag & P_INEXEC) != 0) {
402 * XXXRW: Not clear ESRCH is the right error during proc
408 if ((flags & PGET_HOLD) != 0) {
420 * Create a new process group.
421 * pgid must be equal to the pid of p.
422 * Begin a new session if required.
425 enterpgrp(p, pgid, pgrp, sess)
426 register struct proc *p;
429 struct session *sess;
432 sx_assert(&proctree_lock, SX_XLOCKED);
434 KASSERT(pgrp != NULL, ("enterpgrp: pgrp == NULL"));
435 KASSERT(p->p_pid == pgid,
436 ("enterpgrp: new pgrp and pid != pgid"));
437 KASSERT(pgfind(pgid) == NULL,
438 ("enterpgrp: pgrp with pgid exists"));
439 KASSERT(!SESS_LEADER(p),
440 ("enterpgrp: session leader attempted setpgrp"));
442 mtx_init(&pgrp->pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
448 mtx_init(&sess->s_mtx, "session", NULL, MTX_DEF);
450 p->p_flag &= ~P_CONTROLT;
454 sess->s_sid = p->p_pid;
455 refcount_init(&sess->s_count, 1);
456 sess->s_ttyvp = NULL;
457 sess->s_ttydp = NULL;
459 bcopy(p->p_session->s_login, sess->s_login,
460 sizeof(sess->s_login));
461 pgrp->pg_session = sess;
462 KASSERT(p == curproc,
463 ("enterpgrp: mksession and p != curproc"));
465 pgrp->pg_session = p->p_session;
466 sess_hold(pgrp->pg_session);
470 LIST_INIT(&pgrp->pg_members);
473 * As we have an exclusive lock of proctree_lock,
474 * this should not deadlock.
476 LIST_INSERT_HEAD(PGRPHASH(pgid), pgrp, pg_hash);
478 SLIST_INIT(&pgrp->pg_sigiolst);
481 doenterpgrp(p, pgrp);
487 * Move p to an existing process group
490 enterthispgrp(p, pgrp)
491 register struct proc *p;
495 sx_assert(&proctree_lock, SX_XLOCKED);
496 PROC_LOCK_ASSERT(p, MA_NOTOWNED);
497 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
498 PGRP_LOCK_ASSERT(p->p_pgrp, MA_NOTOWNED);
499 SESS_LOCK_ASSERT(p->p_session, MA_NOTOWNED);
500 KASSERT(pgrp->pg_session == p->p_session,
501 ("%s: pgrp's session %p, p->p_session %p.\n",
505 KASSERT(pgrp != p->p_pgrp,
506 ("%s: p belongs to pgrp.", __func__));
508 doenterpgrp(p, pgrp);
514 * Move p to a process group
521 struct pgrp *savepgrp;
523 sx_assert(&proctree_lock, SX_XLOCKED);
524 PROC_LOCK_ASSERT(p, MA_NOTOWNED);
525 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
526 PGRP_LOCK_ASSERT(p->p_pgrp, MA_NOTOWNED);
527 SESS_LOCK_ASSERT(p->p_session, MA_NOTOWNED);
529 savepgrp = p->p_pgrp;
532 * Adjust eligibility of affected pgrps to participate in job control.
533 * Increment eligibility counts before decrementing, otherwise we
534 * could reach 0 spuriously during the first call.
537 fixjobc(p, p->p_pgrp, 0);
542 LIST_REMOVE(p, p_pglist);
545 LIST_INSERT_HEAD(&pgrp->pg_members, p, p_pglist);
546 PGRP_UNLOCK(savepgrp);
548 if (LIST_EMPTY(&savepgrp->pg_members))
553 * remove process from process group
557 register struct proc *p;
559 struct pgrp *savepgrp;
561 sx_assert(&proctree_lock, SX_XLOCKED);
562 savepgrp = p->p_pgrp;
565 LIST_REMOVE(p, p_pglist);
568 PGRP_UNLOCK(savepgrp);
569 if (LIST_EMPTY(&savepgrp->pg_members))
575 * delete a process group
579 register struct pgrp *pgrp;
581 struct session *savesess;
584 sx_assert(&proctree_lock, SX_XLOCKED);
585 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
586 SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED);
589 * Reset any sigio structures pointing to us as a result of
590 * F_SETOWN with our pgid.
592 funsetownlst(&pgrp->pg_sigiolst);
595 tp = pgrp->pg_session->s_ttyp;
596 LIST_REMOVE(pgrp, pg_hash);
597 savesess = pgrp->pg_session;
600 /* Remove the reference to the pgrp before deallocating it. */
603 tty_rel_pgrp(tp, pgrp);
606 mtx_destroy(&pgrp->pg_mtx);
608 sess_release(savesess);
612 pgadjustjobc(pgrp, entering)
622 if (pgrp->pg_jobc == 0)
629 * Adjust pgrp jobc counters when specified process changes process group.
630 * We count the number of processes in each process group that "qualify"
631 * the group for terminal job control (those with a parent in a different
632 * process group of the same session). If that count reaches zero, the
633 * process group becomes orphaned. Check both the specified process'
634 * process group and that of its children.
635 * entering == 0 => p is leaving specified group.
636 * entering == 1 => p is entering specified group.
639 fixjobc(p, pgrp, entering)
640 register struct proc *p;
641 register struct pgrp *pgrp;
644 register struct pgrp *hispgrp;
645 register struct session *mysession;
647 sx_assert(&proctree_lock, SX_LOCKED);
648 PROC_LOCK_ASSERT(p, MA_NOTOWNED);
649 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
650 SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED);
653 * Check p's parent to see whether p qualifies its own process
654 * group; if so, adjust count for p's process group.
656 mysession = pgrp->pg_session;
657 if ((hispgrp = p->p_pptr->p_pgrp) != pgrp &&
658 hispgrp->pg_session == mysession)
659 pgadjustjobc(pgrp, entering);
662 * Check this process' children to see whether they qualify
663 * their process groups; if so, adjust counts for children's
666 LIST_FOREACH(p, &p->p_children, p_sibling) {
668 if (hispgrp == pgrp ||
669 hispgrp->pg_session != mysession)
672 if (p->p_state == PRS_ZOMBIE) {
677 pgadjustjobc(hispgrp, entering);
682 * A process group has become orphaned;
683 * if there are any stopped processes in the group,
684 * hang-up all process in that group.
690 register struct proc *p;
692 PGRP_LOCK_ASSERT(pg, MA_OWNED);
694 LIST_FOREACH(p, &pg->pg_members, p_pglist) {
696 if (P_SHOULDSTOP(p) == P_STOPPED_SIG) {
698 LIST_FOREACH(p, &pg->pg_members, p_pglist) {
700 kern_psignal(p, SIGHUP);
701 kern_psignal(p, SIGCONT);
711 sess_hold(struct session *s)
714 refcount_acquire(&s->s_count);
718 sess_release(struct session *s)
721 if (refcount_release(&s->s_count)) {
722 if (s->s_ttyp != NULL) {
724 tty_rel_sess(s->s_ttyp, s);
726 mtx_destroy(&s->s_mtx);
733 DB_SHOW_COMMAND(pgrpdump, pgrpdump)
735 register struct pgrp *pgrp;
736 register struct proc *p;
739 for (i = 0; i <= pgrphash; i++) {
740 if (!LIST_EMPTY(&pgrphashtbl[i])) {
741 printf("\tindx %d\n", i);
742 LIST_FOREACH(pgrp, &pgrphashtbl[i], pg_hash) {
744 "\tpgrp %p, pgid %ld, sess %p, sesscnt %d, mem %p\n",
745 (void *)pgrp, (long)pgrp->pg_id,
746 (void *)pgrp->pg_session,
747 pgrp->pg_session->s_count,
748 (void *)LIST_FIRST(&pgrp->pg_members));
749 LIST_FOREACH(p, &pgrp->pg_members, p_pglist) {
750 printf("\t\tpid %ld addr %p pgrp %p\n",
751 (long)p->p_pid, (void *)p,
761 * Calculate the kinfo_proc members which contain process-wide
763 * Must be called with the target process locked.
766 fill_kinfo_aggregate(struct proc *p, struct kinfo_proc *kp)
770 PROC_LOCK_ASSERT(p, MA_OWNED);
774 FOREACH_THREAD_IN_PROC(p, td) {
776 kp->ki_pctcpu += sched_pctcpu(td);
777 kp->ki_estcpu += td->td_estcpu;
783 * Clear kinfo_proc and fill in any information that is common
784 * to all threads in the process.
785 * Must be called with the target process locked.
788 fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp)
796 PROC_LOCK_ASSERT(p, MA_OWNED);
797 bzero(kp, sizeof(*kp));
799 kp->ki_structsize = sizeof(*kp);
801 kp->ki_addr =/* p->p_addr; */0; /* XXX */
802 kp->ki_args = p->p_args;
803 kp->ki_textvp = p->p_textvp;
805 kp->ki_tracep = p->p_tracevp;
806 kp->ki_traceflag = p->p_traceflag;
809 kp->ki_vmspace = p->p_vmspace;
810 kp->ki_flag = p->p_flag;
811 kp->ki_flag2 = p->p_flag2;
814 kp->ki_uid = cred->cr_uid;
815 kp->ki_ruid = cred->cr_ruid;
816 kp->ki_svuid = cred->cr_svuid;
818 if (cred->cr_flags & CRED_FLAG_CAPMODE)
819 kp->ki_cr_flags |= KI_CRF_CAPABILITY_MODE;
820 /* XXX bde doesn't like KI_NGROUPS */
821 if (cred->cr_ngroups > KI_NGROUPS) {
822 kp->ki_ngroups = KI_NGROUPS;
823 kp->ki_cr_flags |= KI_CRF_GRP_OVERFLOW;
825 kp->ki_ngroups = cred->cr_ngroups;
826 bcopy(cred->cr_groups, kp->ki_groups,
827 kp->ki_ngroups * sizeof(gid_t));
828 kp->ki_rgid = cred->cr_rgid;
829 kp->ki_svgid = cred->cr_svgid;
830 /* If jailed(cred), emulate the old P_JAILED flag. */
832 kp->ki_flag |= P_JAILED;
833 /* If inside the jail, use 0 as a jail ID. */
834 if (cred->cr_prison != curthread->td_ucred->cr_prison)
835 kp->ki_jid = cred->cr_prison->pr_id;
837 strlcpy(kp->ki_loginclass, cred->cr_loginclass->lc_name,
838 sizeof(kp->ki_loginclass));
842 mtx_lock(&ps->ps_mtx);
843 kp->ki_sigignore = ps->ps_sigignore;
844 kp->ki_sigcatch = ps->ps_sigcatch;
845 mtx_unlock(&ps->ps_mtx);
847 if (p->p_state != PRS_NEW &&
848 p->p_state != PRS_ZOMBIE &&
849 p->p_vmspace != NULL) {
850 struct vmspace *vm = p->p_vmspace;
852 kp->ki_size = vm->vm_map.size;
853 kp->ki_rssize = vmspace_resident_count(vm); /*XXX*/
854 FOREACH_THREAD_IN_PROC(p, td0) {
855 if (!TD_IS_SWAPPED(td0))
856 kp->ki_rssize += td0->td_kstack_pages;
858 kp->ki_swrss = vm->vm_swrss;
859 kp->ki_tsize = vm->vm_tsize;
860 kp->ki_dsize = vm->vm_dsize;
861 kp->ki_ssize = vm->vm_ssize;
862 } else if (p->p_state == PRS_ZOMBIE)
864 if (kp->ki_flag & P_INMEM)
865 kp->ki_sflag = PS_INMEM;
868 /* Calculate legacy swtime as seconds since 'swtick'. */
869 kp->ki_swtime = (ticks - p->p_swtick) / hz;
870 kp->ki_pid = p->p_pid;
871 kp->ki_nice = p->p_nice;
872 kp->ki_fibnum = p->p_fibnum;
873 kp->ki_start = p->p_stats->p_start;
874 timevaladd(&kp->ki_start, &boottime);
876 rufetch(p, &kp->ki_rusage);
877 kp->ki_runtime = cputick2usec(p->p_rux.rux_runtime);
878 calcru(p, &kp->ki_rusage.ru_utime, &kp->ki_rusage.ru_stime);
880 calccru(p, &kp->ki_childutime, &kp->ki_childstime);
881 /* Some callers want child times in a single value. */
882 kp->ki_childtime = kp->ki_childstime;
883 timevaladd(&kp->ki_childtime, &kp->ki_childutime);
885 FOREACH_THREAD_IN_PROC(p, td0)
886 kp->ki_cow += td0->td_cow;
890 kp->ki_pgid = p->p_pgrp->pg_id;
891 kp->ki_jobc = p->p_pgrp->pg_jobc;
892 sp = p->p_pgrp->pg_session;
895 kp->ki_sid = sp->s_sid;
897 strlcpy(kp->ki_login, sp->s_login,
898 sizeof(kp->ki_login));
900 kp->ki_kiflag |= KI_CTTY;
902 kp->ki_kiflag |= KI_SLEADER;
903 /* XXX proctree_lock */
908 if ((p->p_flag & P_CONTROLT) && tp != NULL) {
909 kp->ki_tdev = tty_udev(tp);
910 kp->ki_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID;
912 kp->ki_tsid = tp->t_session->s_sid;
915 if (p->p_comm[0] != '\0')
916 strlcpy(kp->ki_comm, p->p_comm, sizeof(kp->ki_comm));
917 if (p->p_sysent && p->p_sysent->sv_name != NULL &&
918 p->p_sysent->sv_name[0] != '\0')
919 strlcpy(kp->ki_emul, p->p_sysent->sv_name, sizeof(kp->ki_emul));
920 kp->ki_siglist = p->p_siglist;
921 kp->ki_xstat = p->p_xstat;
922 kp->ki_acflag = p->p_acflag;
923 kp->ki_lock = p->p_lock;
925 kp->ki_ppid = p->p_pptr->p_pid;
929 * Fill in information that is thread specific. Must be called with
930 * target process locked. If 'preferthread' is set, overwrite certain
931 * process-related fields that are maintained for both threads and
935 fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp, int preferthread)
941 PROC_LOCK_ASSERT(p, MA_OWNED);
946 if (td->td_wmesg != NULL)
947 strlcpy(kp->ki_wmesg, td->td_wmesg, sizeof(kp->ki_wmesg));
949 bzero(kp->ki_wmesg, sizeof(kp->ki_wmesg));
950 strlcpy(kp->ki_tdname, td->td_name, sizeof(kp->ki_tdname));
951 if (TD_ON_LOCK(td)) {
952 kp->ki_kiflag |= KI_LOCKBLOCK;
953 strlcpy(kp->ki_lockname, td->td_lockname,
954 sizeof(kp->ki_lockname));
956 kp->ki_kiflag &= ~KI_LOCKBLOCK;
957 bzero(kp->ki_lockname, sizeof(kp->ki_lockname));
960 if (p->p_state == PRS_NORMAL) { /* approximate. */
961 if (TD_ON_RUNQ(td) ||
965 } else if (P_SHOULDSTOP(p)) {
967 } else if (TD_IS_SLEEPING(td)) {
968 kp->ki_stat = SSLEEP;
969 } else if (TD_ON_LOCK(td)) {
974 } else if (p->p_state == PRS_ZOMBIE) {
980 /* Things in the thread */
981 kp->ki_wchan = td->td_wchan;
982 kp->ki_pri.pri_level = td->td_priority;
983 kp->ki_pri.pri_native = td->td_base_pri;
984 kp->ki_lastcpu = td->td_lastcpu;
985 kp->ki_oncpu = td->td_oncpu;
986 kp->ki_tdflags = td->td_flags;
987 kp->ki_tid = td->td_tid;
988 kp->ki_numthreads = p->p_numthreads;
989 kp->ki_pcb = td->td_pcb;
990 kp->ki_kstack = (void *)td->td_kstack;
991 kp->ki_slptime = (ticks - td->td_slptick) / hz;
992 kp->ki_pri.pri_class = td->td_pri_class;
993 kp->ki_pri.pri_user = td->td_user_pri;
996 rufetchtd(td, &kp->ki_rusage);
997 kp->ki_runtime = cputick2usec(td->td_rux.rux_runtime);
998 kp->ki_pctcpu = sched_pctcpu(td);
999 kp->ki_estcpu = td->td_estcpu;
1000 kp->ki_cow = td->td_cow;
1003 /* We can't get this anymore but ps etc never used it anyway. */
1007 kp->ki_siglist = td->td_siglist;
1008 kp->ki_sigmask = td->td_sigmask;
1015 * Fill in a kinfo_proc structure for the specified process.
1016 * Must be called with the target process locked.
1019 fill_kinfo_proc(struct proc *p, struct kinfo_proc *kp)
1022 MPASS(FIRST_THREAD_IN_PROC(p) != NULL);
1024 fill_kinfo_proc_only(p, kp);
1025 fill_kinfo_thread(FIRST_THREAD_IN_PROC(p), kp, 0);
1026 fill_kinfo_aggregate(p, kp);
1033 return (malloc(sizeof(struct pstats), M_SUBPROC, M_ZERO|M_WAITOK));
1037 * Copy parts of p_stats; zero the rest of p_stats (statistics).
1040 pstats_fork(struct pstats *src, struct pstats *dst)
1043 bzero(&dst->pstat_startzero,
1044 __rangeof(struct pstats, pstat_startzero, pstat_endzero));
1045 bcopy(&src->pstat_startcopy, &dst->pstat_startcopy,
1046 __rangeof(struct pstats, pstat_startcopy, pstat_endcopy));
1050 pstats_free(struct pstats *ps)
1053 free(ps, M_SUBPROC);
1056 static struct proc *
1057 zpfind_locked(pid_t pid)
1061 sx_assert(&allproc_lock, SX_LOCKED);
1062 LIST_FOREACH(p, &zombproc, p_list) {
1063 if (p->p_pid == pid) {
1072 * Locate a zombie process by number
1079 sx_slock(&allproc_lock);
1080 p = zpfind_locked(pid);
1081 sx_sunlock(&allproc_lock);
1085 #ifdef COMPAT_FREEBSD32
1088 * This function is typically used to copy out the kernel address, so
1089 * it can be replaced by assignment of zero.
1091 static inline uint32_t
1092 ptr32_trim(void *ptr)
1096 uptr = (uintptr_t)ptr;
1097 return ((uptr > UINT_MAX) ? 0 : uptr);
1100 #define PTRTRIM_CP(src,dst,fld) \
1101 do { (dst).fld = ptr32_trim((src).fld); } while (0)
1104 freebsd32_kinfo_proc_out(const struct kinfo_proc *ki, struct kinfo_proc32 *ki32)
1108 bzero(ki32, sizeof(struct kinfo_proc32));
1109 ki32->ki_structsize = sizeof(struct kinfo_proc32);
1110 CP(*ki, *ki32, ki_layout);
1111 PTRTRIM_CP(*ki, *ki32, ki_args);
1112 PTRTRIM_CP(*ki, *ki32, ki_paddr);
1113 PTRTRIM_CP(*ki, *ki32, ki_addr);
1114 PTRTRIM_CP(*ki, *ki32, ki_tracep);
1115 PTRTRIM_CP(*ki, *ki32, ki_textvp);
1116 PTRTRIM_CP(*ki, *ki32, ki_fd);
1117 PTRTRIM_CP(*ki, *ki32, ki_vmspace);
1118 PTRTRIM_CP(*ki, *ki32, ki_wchan);
1119 CP(*ki, *ki32, ki_pid);
1120 CP(*ki, *ki32, ki_ppid);
1121 CP(*ki, *ki32, ki_pgid);
1122 CP(*ki, *ki32, ki_tpgid);
1123 CP(*ki, *ki32, ki_sid);
1124 CP(*ki, *ki32, ki_tsid);
1125 CP(*ki, *ki32, ki_jobc);
1126 CP(*ki, *ki32, ki_tdev);
1127 CP(*ki, *ki32, ki_siglist);
1128 CP(*ki, *ki32, ki_sigmask);
1129 CP(*ki, *ki32, ki_sigignore);
1130 CP(*ki, *ki32, ki_sigcatch);
1131 CP(*ki, *ki32, ki_uid);
1132 CP(*ki, *ki32, ki_ruid);
1133 CP(*ki, *ki32, ki_svuid);
1134 CP(*ki, *ki32, ki_rgid);
1135 CP(*ki, *ki32, ki_svgid);
1136 CP(*ki, *ki32, ki_ngroups);
1137 for (i = 0; i < KI_NGROUPS; i++)
1138 CP(*ki, *ki32, ki_groups[i]);
1139 CP(*ki, *ki32, ki_size);
1140 CP(*ki, *ki32, ki_rssize);
1141 CP(*ki, *ki32, ki_swrss);
1142 CP(*ki, *ki32, ki_tsize);
1143 CP(*ki, *ki32, ki_dsize);
1144 CP(*ki, *ki32, ki_ssize);
1145 CP(*ki, *ki32, ki_xstat);
1146 CP(*ki, *ki32, ki_acflag);
1147 CP(*ki, *ki32, ki_pctcpu);
1148 CP(*ki, *ki32, ki_estcpu);
1149 CP(*ki, *ki32, ki_slptime);
1150 CP(*ki, *ki32, ki_swtime);
1151 CP(*ki, *ki32, ki_cow);
1152 CP(*ki, *ki32, ki_runtime);
1153 TV_CP(*ki, *ki32, ki_start);
1154 TV_CP(*ki, *ki32, ki_childtime);
1155 CP(*ki, *ki32, ki_flag);
1156 CP(*ki, *ki32, ki_kiflag);
1157 CP(*ki, *ki32, ki_traceflag);
1158 CP(*ki, *ki32, ki_stat);
1159 CP(*ki, *ki32, ki_nice);
1160 CP(*ki, *ki32, ki_lock);
1161 CP(*ki, *ki32, ki_rqindex);
1162 CP(*ki, *ki32, ki_oncpu);
1163 CP(*ki, *ki32, ki_lastcpu);
1164 bcopy(ki->ki_tdname, ki32->ki_tdname, TDNAMLEN + 1);
1165 bcopy(ki->ki_wmesg, ki32->ki_wmesg, WMESGLEN + 1);
1166 bcopy(ki->ki_login, ki32->ki_login, LOGNAMELEN + 1);
1167 bcopy(ki->ki_lockname, ki32->ki_lockname, LOCKNAMELEN + 1);
1168 bcopy(ki->ki_comm, ki32->ki_comm, COMMLEN + 1);
1169 bcopy(ki->ki_emul, ki32->ki_emul, KI_EMULNAMELEN + 1);
1170 bcopy(ki->ki_loginclass, ki32->ki_loginclass, LOGINCLASSLEN + 1);
1171 CP(*ki, *ki32, ki_flag2);
1172 CP(*ki, *ki32, ki_fibnum);
1173 CP(*ki, *ki32, ki_cr_flags);
1174 CP(*ki, *ki32, ki_jid);
1175 CP(*ki, *ki32, ki_numthreads);
1176 CP(*ki, *ki32, ki_tid);
1177 CP(*ki, *ki32, ki_pri);
1178 freebsd32_rusage_out(&ki->ki_rusage, &ki32->ki_rusage);
1179 freebsd32_rusage_out(&ki->ki_rusage_ch, &ki32->ki_rusage_ch);
1180 PTRTRIM_CP(*ki, *ki32, ki_pcb);
1181 PTRTRIM_CP(*ki, *ki32, ki_kstack);
1182 PTRTRIM_CP(*ki, *ki32, ki_udata);
1183 CP(*ki, *ki32, ki_sflag);
1184 CP(*ki, *ki32, ki_tdflags);
1189 kern_proc_out(struct proc *p, struct sbuf *sb, int flags)
1192 struct kinfo_proc ki;
1193 #ifdef COMPAT_FREEBSD32
1194 struct kinfo_proc32 ki32;
1198 PROC_LOCK_ASSERT(p, MA_OWNED);
1199 MPASS(FIRST_THREAD_IN_PROC(p) != NULL);
1202 fill_kinfo_proc(p, &ki);
1203 if ((flags & KERN_PROC_NOTHREADS) != 0) {
1204 #ifdef COMPAT_FREEBSD32
1205 if ((flags & KERN_PROC_MASK32) != 0) {
1206 freebsd32_kinfo_proc_out(&ki, &ki32);
1207 if (sbuf_bcat(sb, &ki32, sizeof(ki32)) != 0)
1211 if (sbuf_bcat(sb, &ki, sizeof(ki)) != 0)
1214 FOREACH_THREAD_IN_PROC(p, td) {
1215 fill_kinfo_thread(td, &ki, 1);
1216 #ifdef COMPAT_FREEBSD32
1217 if ((flags & KERN_PROC_MASK32) != 0) {
1218 freebsd32_kinfo_proc_out(&ki, &ki32);
1219 if (sbuf_bcat(sb, &ki32, sizeof(ki32)) != 0)
1223 if (sbuf_bcat(sb, &ki, sizeof(ki)) != 0)
1234 sysctl_out_proc(struct proc *p, struct sysctl_req *req, int flags,
1238 struct kinfo_proc ki;
1244 sbuf_new_for_sysctl(&sb, (char *)&ki, sizeof(ki), req);
1245 error = kern_proc_out(p, &sb, flags);
1246 error2 = sbuf_finish(&sb);
1250 else if (error2 != 0)
1270 sysctl_kern_proc(SYSCTL_HANDLER_ARGS)
1272 int *name = (int *)arg1;
1273 u_int namelen = arg2;
1275 int flags, doingzomb, oid_number;
1278 oid_number = oidp->oid_number;
1279 if (oid_number != KERN_PROC_ALL &&
1280 (oid_number & KERN_PROC_INC_THREAD) == 0)
1281 flags = KERN_PROC_NOTHREADS;
1284 oid_number &= ~KERN_PROC_INC_THREAD;
1286 #ifdef COMPAT_FREEBSD32
1287 if (req->flags & SCTL_MASK32)
1288 flags |= KERN_PROC_MASK32;
1290 if (oid_number == KERN_PROC_PID) {
1293 error = sysctl_wire_old_buffer(req, 0);
1296 error = pget((pid_t)name[0], PGET_CANSEE, &p);
1299 error = sysctl_out_proc(p, req, flags, 0);
1303 switch (oid_number) {
1308 case KERN_PROC_PROC:
1309 if (namelen != 0 && namelen != 1)
1319 /* overestimate by 5 procs */
1320 error = SYSCTL_OUT(req, 0, sizeof (struct kinfo_proc) * 5);
1324 error = sysctl_wire_old_buffer(req, 0);
1327 sx_slock(&allproc_lock);
1328 for (doingzomb=0 ; doingzomb < 2 ; doingzomb++) {
1330 p = LIST_FIRST(&allproc);
1332 p = LIST_FIRST(&zombproc);
1333 for (; p != 0; p = LIST_NEXT(p, p_list)) {
1335 * Skip embryonic processes.
1338 if (p->p_state == PRS_NEW) {
1342 KASSERT(p->p_ucred != NULL,
1343 ("process credential is NULL for non-NEW proc"));
1345 * Show a user only appropriate processes.
1347 if (p_cansee(curthread, p)) {
1352 * TODO - make more efficient (see notes below).
1355 switch (oid_number) {
1358 if (p->p_ucred->cr_gid != (gid_t)name[0]) {
1364 case KERN_PROC_PGRP:
1365 /* could do this by traversing pgrp */
1366 if (p->p_pgrp == NULL ||
1367 p->p_pgrp->pg_id != (pid_t)name[0]) {
1373 case KERN_PROC_RGID:
1374 if (p->p_ucred->cr_rgid != (gid_t)name[0]) {
1380 case KERN_PROC_SESSION:
1381 if (p->p_session == NULL ||
1382 p->p_session->s_sid != (pid_t)name[0]) {
1389 if ((p->p_flag & P_CONTROLT) == 0 ||
1390 p->p_session == NULL) {
1394 /* XXX proctree_lock */
1395 SESS_LOCK(p->p_session);
1396 if (p->p_session->s_ttyp == NULL ||
1397 tty_udev(p->p_session->s_ttyp) !=
1399 SESS_UNLOCK(p->p_session);
1403 SESS_UNLOCK(p->p_session);
1407 if (p->p_ucred->cr_uid != (uid_t)name[0]) {
1413 case KERN_PROC_RUID:
1414 if (p->p_ucred->cr_ruid != (uid_t)name[0]) {
1420 case KERN_PROC_PROC:
1428 error = sysctl_out_proc(p, req, flags, doingzomb);
1430 sx_sunlock(&allproc_lock);
1435 sx_sunlock(&allproc_lock);
1440 pargs_alloc(int len)
1444 pa = malloc(sizeof(struct pargs) + len, M_PARGS,
1446 refcount_init(&pa->ar_ref, 1);
1447 pa->ar_length = len;
1452 pargs_free(struct pargs *pa)
1459 pargs_hold(struct pargs *pa)
1464 refcount_acquire(&pa->ar_ref);
1468 pargs_drop(struct pargs *pa)
1473 if (refcount_release(&pa->ar_ref))
1478 proc_read_mem(struct thread *td, struct proc *p, vm_offset_t offset, void* buf,
1484 iov.iov_base = (caddr_t)buf;
1488 uio.uio_offset = offset;
1489 uio.uio_resid = (ssize_t)len;
1490 uio.uio_segflg = UIO_SYSSPACE;
1491 uio.uio_rw = UIO_READ;
1494 return (proc_rwmem(p, &uio));
1498 proc_read_string(struct thread *td, struct proc *p, const char *sptr, char *buf,
1504 error = proc_read_mem(td, p, (vm_offset_t)sptr, buf, len);
1506 * Reading the chunk may validly return EFAULT if the string is shorter
1507 * than the chunk and is aligned at the end of the page, assuming the
1508 * next page is not mapped. So if EFAULT is returned do a fallback to
1509 * one byte read loop.
1511 if (error == EFAULT) {
1512 for (i = 0; i < len; i++, buf++, sptr++) {
1513 error = proc_read_mem(td, p, (vm_offset_t)sptr, buf, 1);
1524 #define PROC_AUXV_MAX 256 /* Safety limit on auxv size. */
1526 enum proc_vector_type {
1532 #ifdef COMPAT_FREEBSD32
1534 get_proc_vector32(struct thread *td, struct proc *p, char ***proc_vectorp,
1535 size_t *vsizep, enum proc_vector_type type)
1537 struct freebsd32_ps_strings pss;
1539 vm_offset_t vptr, ptr;
1540 uint32_t *proc_vector32;
1545 error = proc_read_mem(td, p, (vm_offset_t)(p->p_sysent->sv_psstrings),
1551 vptr = (vm_offset_t)PTRIN(pss.ps_argvstr);
1552 vsize = pss.ps_nargvstr;
1553 if (vsize > ARG_MAX)
1555 size = vsize * sizeof(int32_t);
1558 vptr = (vm_offset_t)PTRIN(pss.ps_envstr);
1559 vsize = pss.ps_nenvstr;
1560 if (vsize > ARG_MAX)
1562 size = vsize * sizeof(int32_t);
1565 vptr = (vm_offset_t)PTRIN(pss.ps_envstr) +
1566 (pss.ps_nenvstr + 1) * sizeof(int32_t);
1569 for (ptr = vptr, i = 0; i < PROC_AUXV_MAX; i++) {
1570 error = proc_read_mem(td, p, ptr, &aux, sizeof(aux));
1573 if (aux.a_type == AT_NULL)
1577 if (aux.a_type != AT_NULL)
1580 size = vsize * sizeof(aux);
1583 KASSERT(0, ("Wrong proc vector type: %d", type));
1586 proc_vector32 = malloc(size, M_TEMP, M_WAITOK);
1587 error = proc_read_mem(td, p, vptr, proc_vector32, size);
1590 if (type == PROC_AUX) {
1591 *proc_vectorp = (char **)proc_vector32;
1595 proc_vector = malloc(vsize * sizeof(char *), M_TEMP, M_WAITOK);
1596 for (i = 0; i < (int)vsize; i++)
1597 proc_vector[i] = PTRIN(proc_vector32[i]);
1598 *proc_vectorp = proc_vector;
1601 free(proc_vector32, M_TEMP);
1607 get_proc_vector(struct thread *td, struct proc *p, char ***proc_vectorp,
1608 size_t *vsizep, enum proc_vector_type type)
1610 struct ps_strings pss;
1612 vm_offset_t vptr, ptr;
1617 #ifdef COMPAT_FREEBSD32
1618 if (SV_PROC_FLAG(p, SV_ILP32) != 0)
1619 return (get_proc_vector32(td, p, proc_vectorp, vsizep, type));
1621 error = proc_read_mem(td, p, (vm_offset_t)(p->p_sysent->sv_psstrings),
1627 vptr = (vm_offset_t)pss.ps_argvstr;
1628 vsize = pss.ps_nargvstr;
1629 if (vsize > ARG_MAX)
1631 size = vsize * sizeof(char *);
1634 vptr = (vm_offset_t)pss.ps_envstr;
1635 vsize = pss.ps_nenvstr;
1636 if (vsize > ARG_MAX)
1638 size = vsize * sizeof(char *);
1642 * The aux array is just above env array on the stack. Check
1643 * that the address is naturally aligned.
1645 vptr = (vm_offset_t)pss.ps_envstr + (pss.ps_nenvstr + 1)
1647 #if __ELF_WORD_SIZE == 64
1648 if (vptr % sizeof(uint64_t) != 0)
1650 if (vptr % sizeof(uint32_t) != 0)
1654 * We count the array size reading the aux vectors from the
1655 * stack until AT_NULL vector is returned. So (to keep the code
1656 * simple) we read the process stack twice: the first time here
1657 * to find the size and the second time when copying the vectors
1658 * to the allocated proc_vector.
1660 for (ptr = vptr, i = 0; i < PROC_AUXV_MAX; i++) {
1661 error = proc_read_mem(td, p, ptr, &aux, sizeof(aux));
1664 if (aux.a_type == AT_NULL)
1669 * If the PROC_AUXV_MAX entries are iterated over, and we have
1670 * not reached AT_NULL, it is most likely we are reading wrong
1671 * data: either the process doesn't have auxv array or data has
1672 * been modified. Return the error in this case.
1674 if (aux.a_type != AT_NULL)
1677 size = vsize * sizeof(aux);
1680 KASSERT(0, ("Wrong proc vector type: %d", type));
1681 return (EINVAL); /* In case we are built without INVARIANTS. */
1683 proc_vector = malloc(size, M_TEMP, M_WAITOK);
1684 if (proc_vector == NULL)
1686 error = proc_read_mem(td, p, vptr, proc_vector, size);
1688 free(proc_vector, M_TEMP);
1691 *proc_vectorp = proc_vector;
1697 #define GET_PS_STRINGS_CHUNK_SZ 256 /* Chunk size (bytes) for ps_strings operations. */
1700 get_ps_strings(struct thread *td, struct proc *p, struct sbuf *sb,
1701 enum proc_vector_type type)
1703 size_t done, len, nchr, vsize;
1705 char **proc_vector, *sptr;
1706 char pss_string[GET_PS_STRINGS_CHUNK_SZ];
1708 PROC_ASSERT_HELD(p);
1711 * We are not going to read more than 2 * (PATH_MAX + ARG_MAX) bytes.
1713 nchr = 2 * (PATH_MAX + ARG_MAX);
1715 error = get_proc_vector(td, p, &proc_vector, &vsize, type);
1718 for (done = 0, i = 0; i < (int)vsize && done < nchr; i++) {
1720 * The program may have scribbled into its argv array, e.g. to
1721 * remove some arguments. If that has happened, break out
1722 * before trying to read from NULL.
1724 if (proc_vector[i] == NULL)
1726 for (sptr = proc_vector[i]; ; sptr += GET_PS_STRINGS_CHUNK_SZ) {
1727 error = proc_read_string(td, p, sptr, pss_string,
1728 sizeof(pss_string));
1731 len = strnlen(pss_string, GET_PS_STRINGS_CHUNK_SZ);
1732 if (done + len >= nchr)
1733 len = nchr - done - 1;
1734 sbuf_bcat(sb, pss_string, len);
1735 if (len != GET_PS_STRINGS_CHUNK_SZ)
1737 done += GET_PS_STRINGS_CHUNK_SZ;
1739 sbuf_bcat(sb, "", 1);
1743 free(proc_vector, M_TEMP);
1748 proc_getargv(struct thread *td, struct proc *p, struct sbuf *sb)
1751 return (get_ps_strings(curthread, p, sb, PROC_ARG));
1755 proc_getenvv(struct thread *td, struct proc *p, struct sbuf *sb)
1758 return (get_ps_strings(curthread, p, sb, PROC_ENV));
1762 proc_getauxv(struct thread *td, struct proc *p, struct sbuf *sb)
1768 error = get_proc_vector(td, p, &auxv, &vsize, PROC_AUX);
1770 #ifdef COMPAT_FREEBSD32
1771 if (SV_PROC_FLAG(p, SV_ILP32) != 0)
1772 size = vsize * sizeof(Elf32_Auxinfo);
1775 size = vsize * sizeof(Elf_Auxinfo);
1776 if (sbuf_bcat(sb, auxv, size) != 0)
1784 * This sysctl allows a process to retrieve the argument list or process
1785 * title for another process without groping around in the address space
1786 * of the other process. It also allow a process to set its own "process
1787 * title to a string of its own choice.
1790 sysctl_kern_proc_args(SYSCTL_HANDLER_ARGS)
1792 int *name = (int *)arg1;
1793 u_int namelen = arg2;
1794 struct pargs *newpa, *pa;
1797 int flags, error = 0, error2;
1802 flags = PGET_CANSEE;
1803 if (req->newptr != NULL)
1804 flags |= PGET_ISCURRENT;
1805 error = pget((pid_t)name[0], flags, &p);
1813 error = SYSCTL_OUT(req, pa->ar_args, pa->ar_length);
1815 } else if ((p->p_flag & (P_WEXIT | P_SYSTEM)) == 0) {
1818 sbuf_new_for_sysctl(&sb, NULL, GET_PS_STRINGS_CHUNK_SZ, req);
1819 error = proc_getargv(curthread, p, &sb);
1820 error2 = sbuf_finish(&sb);
1823 if (error == 0 && error2 != 0)
1828 if (error != 0 || req->newptr == NULL)
1831 if (req->newlen + sizeof(struct pargs) > ps_arg_cache_limit)
1833 newpa = pargs_alloc(req->newlen);
1834 error = SYSCTL_IN(req, newpa->ar_args, req->newlen);
1848 * This sysctl allows a process to retrieve environment of another process.
1851 sysctl_kern_proc_env(SYSCTL_HANDLER_ARGS)
1853 int *name = (int *)arg1;
1854 u_int namelen = arg2;
1862 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
1865 if ((p->p_flag & P_SYSTEM) != 0) {
1870 sbuf_new_for_sysctl(&sb, NULL, GET_PS_STRINGS_CHUNK_SZ, req);
1871 error = proc_getenvv(curthread, p, &sb);
1872 error2 = sbuf_finish(&sb);
1875 return (error != 0 ? error : error2);
1879 * This sysctl allows a process to retrieve ELF auxiliary vector of
1883 sysctl_kern_proc_auxv(SYSCTL_HANDLER_ARGS)
1885 int *name = (int *)arg1;
1886 u_int namelen = arg2;
1894 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
1897 if ((p->p_flag & P_SYSTEM) != 0) {
1901 sbuf_new_for_sysctl(&sb, NULL, GET_PS_STRINGS_CHUNK_SZ, req);
1902 error = proc_getauxv(curthread, p, &sb);
1903 error2 = sbuf_finish(&sb);
1906 return (error != 0 ? error : error2);
1910 * This sysctl allows a process to retrieve the path of the executable for
1911 * itself or another process.
1914 sysctl_kern_proc_pathname(SYSCTL_HANDLER_ARGS)
1916 pid_t *pidp = (pid_t *)arg1;
1917 unsigned int arglen = arg2;
1920 char *retbuf, *freebuf;
1925 if (*pidp == -1) { /* -1 means this process */
1926 p = req->td->td_proc;
1928 error = pget(*pidp, PGET_CANSEE, &p);
1942 error = vn_fullpath(req->td, vp, &retbuf, &freebuf);
1946 error = SYSCTL_OUT(req, retbuf, strlen(retbuf) + 1);
1947 free(freebuf, M_TEMP);
1952 sysctl_kern_proc_sv_name(SYSCTL_HANDLER_ARGS)
1965 error = pget((pid_t)name[0], PGET_CANSEE, &p);
1968 sv_name = p->p_sysent->sv_name;
1970 return (sysctl_handle_string(oidp, sv_name, 0, req));
1973 #ifdef KINFO_OVMENTRY_SIZE
1974 CTASSERT(sizeof(struct kinfo_ovmentry) == KINFO_OVMENTRY_SIZE);
1977 #ifdef COMPAT_FREEBSD7
1979 sysctl_kern_proc_ovmmap(SYSCTL_HANDLER_ARGS)
1981 vm_map_entry_t entry, tmp_entry;
1982 unsigned int last_timestamp;
1983 char *fullpath, *freepath;
1984 struct kinfo_ovmentry *kve;
1994 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
1997 vm = vmspace_acquire_ref(p);
2002 kve = malloc(sizeof(*kve), M_TEMP, M_WAITOK);
2005 vm_map_lock_read(map);
2006 for (entry = map->header.next; entry != &map->header;
2007 entry = entry->next) {
2008 vm_object_t obj, tobj, lobj;
2011 if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
2014 bzero(kve, sizeof(*kve));
2015 kve->kve_structsize = sizeof(*kve);
2017 kve->kve_private_resident = 0;
2018 obj = entry->object.vm_object;
2020 VM_OBJECT_RLOCK(obj);
2021 if (obj->shadow_count == 1)
2022 kve->kve_private_resident =
2023 obj->resident_page_count;
2025 kve->kve_resident = 0;
2026 addr = entry->start;
2027 while (addr < entry->end) {
2028 if (pmap_extract(map->pmap, addr))
2029 kve->kve_resident++;
2033 for (lobj = tobj = obj; tobj; tobj = tobj->backing_object) {
2035 VM_OBJECT_RLOCK(tobj);
2037 VM_OBJECT_RUNLOCK(lobj);
2041 kve->kve_start = (void*)entry->start;
2042 kve->kve_end = (void*)entry->end;
2043 kve->kve_offset = (off_t)entry->offset;
2045 if (entry->protection & VM_PROT_READ)
2046 kve->kve_protection |= KVME_PROT_READ;
2047 if (entry->protection & VM_PROT_WRITE)
2048 kve->kve_protection |= KVME_PROT_WRITE;
2049 if (entry->protection & VM_PROT_EXECUTE)
2050 kve->kve_protection |= KVME_PROT_EXEC;
2052 if (entry->eflags & MAP_ENTRY_COW)
2053 kve->kve_flags |= KVME_FLAG_COW;
2054 if (entry->eflags & MAP_ENTRY_NEEDS_COPY)
2055 kve->kve_flags |= KVME_FLAG_NEEDS_COPY;
2056 if (entry->eflags & MAP_ENTRY_NOCOREDUMP)
2057 kve->kve_flags |= KVME_FLAG_NOCOREDUMP;
2059 last_timestamp = map->timestamp;
2060 vm_map_unlock_read(map);
2062 kve->kve_fileid = 0;
2068 switch (lobj->type) {
2070 kve->kve_type = KVME_TYPE_DEFAULT;
2073 kve->kve_type = KVME_TYPE_VNODE;
2078 if ((lobj->flags & OBJ_TMPFS_NODE) != 0) {
2079 kve->kve_type = KVME_TYPE_VNODE;
2080 if ((lobj->flags & OBJ_TMPFS) != 0) {
2081 vp = lobj->un_pager.swp.swp_tmpfs;
2085 kve->kve_type = KVME_TYPE_SWAP;
2089 kve->kve_type = KVME_TYPE_DEVICE;
2092 kve->kve_type = KVME_TYPE_PHYS;
2095 kve->kve_type = KVME_TYPE_DEAD;
2098 kve->kve_type = KVME_TYPE_SG;
2101 kve->kve_type = KVME_TYPE_UNKNOWN;
2105 VM_OBJECT_RUNLOCK(lobj);
2107 kve->kve_ref_count = obj->ref_count;
2108 kve->kve_shadow_count = obj->shadow_count;
2109 VM_OBJECT_RUNLOCK(obj);
2111 vn_fullpath(curthread, vp, &fullpath,
2113 cred = curthread->td_ucred;
2114 vn_lock(vp, LK_SHARED | LK_RETRY);
2115 if (VOP_GETATTR(vp, &va, cred) == 0) {
2116 kve->kve_fileid = va.va_fileid;
2117 kve->kve_fsid = va.va_fsid;
2122 kve->kve_type = KVME_TYPE_NONE;
2123 kve->kve_ref_count = 0;
2124 kve->kve_shadow_count = 0;
2127 strlcpy(kve->kve_path, fullpath, sizeof(kve->kve_path));
2128 if (freepath != NULL)
2129 free(freepath, M_TEMP);
2131 error = SYSCTL_OUT(req, kve, sizeof(*kve));
2132 vm_map_lock_read(map);
2135 if (last_timestamp != map->timestamp) {
2136 vm_map_lookup_entry(map, addr - 1, &tmp_entry);
2140 vm_map_unlock_read(map);
2146 #endif /* COMPAT_FREEBSD7 */
2148 #ifdef KINFO_VMENTRY_SIZE
2149 CTASSERT(sizeof(struct kinfo_vmentry) == KINFO_VMENTRY_SIZE);
2153 kern_proc_vmmap_resident(vm_map_t map, vm_map_entry_t entry,
2154 struct kinfo_vmentry *kve)
2156 vm_object_t obj, tobj;
2159 vm_paddr_t locked_pa;
2160 vm_pindex_t pi, pi_adv, pindex;
2163 obj = entry->object.vm_object;
2164 addr = entry->start;
2166 pi = OFF_TO_IDX(entry->offset);
2167 for (; addr < entry->end; addr += IDX_TO_OFF(pi_adv), pi += pi_adv) {
2168 if (m_adv != NULL) {
2171 pi_adv = OFF_TO_IDX(entry->end - addr);
2173 for (tobj = obj;; tobj = tobj->backing_object) {
2174 m = vm_page_find_least(tobj, pindex);
2176 if (m->pindex == pindex)
2178 if (pi_adv > m->pindex - pindex) {
2179 pi_adv = m->pindex - pindex;
2183 if (tobj->backing_object == NULL)
2185 pindex += OFF_TO_IDX(tobj->
2186 backing_object_offset);
2190 if (m->psind != 0 && addr + pagesizes[1] <= entry->end &&
2191 (addr & (pagesizes[1] - 1)) == 0 &&
2192 (pmap_mincore(map->pmap, addr, &locked_pa) &
2193 MINCORE_SUPER) != 0) {
2194 kve->kve_flags |= KVME_FLAG_SUPER;
2195 pi_adv = OFF_TO_IDX(pagesizes[1]);
2198 * We do not test the found page on validity.
2199 * Either the page is busy and being paged in,
2200 * or it was invalidated. The first case
2201 * should be counted as resident, the second
2202 * is not so clear; we do account both.
2206 kve->kve_resident += pi_adv;
2209 PA_UNLOCK_COND(locked_pa);
2213 * Must be called with the process locked and will return unlocked.
2216 kern_proc_vmmap_out(struct proc *p, struct sbuf *sb)
2218 vm_map_entry_t entry, tmp_entry;
2221 vm_object_t obj, tobj, lobj;
2222 char *fullpath, *freepath;
2223 struct kinfo_vmentry *kve;
2228 unsigned int last_timestamp;
2231 PROC_LOCK_ASSERT(p, MA_OWNED);
2235 vm = vmspace_acquire_ref(p);
2240 kve = malloc(sizeof(*kve), M_TEMP, M_WAITOK);
2244 vm_map_lock_read(map);
2245 for (entry = map->header.next; entry != &map->header;
2246 entry = entry->next) {
2247 if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
2251 bzero(kve, sizeof(*kve));
2252 obj = entry->object.vm_object;
2254 for (tobj = obj; tobj != NULL;
2255 tobj = tobj->backing_object) {
2256 VM_OBJECT_RLOCK(tobj);
2259 if (obj->backing_object == NULL)
2260 kve->kve_private_resident =
2261 obj->resident_page_count;
2262 if (!vmmap_skip_res_cnt)
2263 kern_proc_vmmap_resident(map, entry, kve);
2264 for (tobj = obj; tobj != NULL;
2265 tobj = tobj->backing_object) {
2266 if (tobj != obj && tobj != lobj)
2267 VM_OBJECT_RUNLOCK(tobj);
2273 kve->kve_start = entry->start;
2274 kve->kve_end = entry->end;
2275 kve->kve_offset = entry->offset;
2277 if (entry->protection & VM_PROT_READ)
2278 kve->kve_protection |= KVME_PROT_READ;
2279 if (entry->protection & VM_PROT_WRITE)
2280 kve->kve_protection |= KVME_PROT_WRITE;
2281 if (entry->protection & VM_PROT_EXECUTE)
2282 kve->kve_protection |= KVME_PROT_EXEC;
2284 if (entry->eflags & MAP_ENTRY_COW)
2285 kve->kve_flags |= KVME_FLAG_COW;
2286 if (entry->eflags & MAP_ENTRY_NEEDS_COPY)
2287 kve->kve_flags |= KVME_FLAG_NEEDS_COPY;
2288 if (entry->eflags & MAP_ENTRY_NOCOREDUMP)
2289 kve->kve_flags |= KVME_FLAG_NOCOREDUMP;
2290 if (entry->eflags & MAP_ENTRY_GROWS_UP)
2291 kve->kve_flags |= KVME_FLAG_GROWS_UP;
2292 if (entry->eflags & MAP_ENTRY_GROWS_DOWN)
2293 kve->kve_flags |= KVME_FLAG_GROWS_DOWN;
2295 last_timestamp = map->timestamp;
2296 vm_map_unlock_read(map);
2302 switch (lobj->type) {
2304 kve->kve_type = KVME_TYPE_DEFAULT;
2307 kve->kve_type = KVME_TYPE_VNODE;
2312 if ((lobj->flags & OBJ_TMPFS_NODE) != 0) {
2313 kve->kve_type = KVME_TYPE_VNODE;
2314 if ((lobj->flags & OBJ_TMPFS) != 0) {
2315 vp = lobj->un_pager.swp.swp_tmpfs;
2319 kve->kve_type = KVME_TYPE_SWAP;
2323 kve->kve_type = KVME_TYPE_DEVICE;
2326 kve->kve_type = KVME_TYPE_PHYS;
2329 kve->kve_type = KVME_TYPE_DEAD;
2332 kve->kve_type = KVME_TYPE_SG;
2334 case OBJT_MGTDEVICE:
2335 kve->kve_type = KVME_TYPE_MGTDEVICE;
2338 kve->kve_type = KVME_TYPE_UNKNOWN;
2342 VM_OBJECT_RUNLOCK(lobj);
2344 kve->kve_ref_count = obj->ref_count;
2345 kve->kve_shadow_count = obj->shadow_count;
2346 VM_OBJECT_RUNLOCK(obj);
2348 vn_fullpath(curthread, vp, &fullpath,
2350 kve->kve_vn_type = vntype_to_kinfo(vp->v_type);
2351 cred = curthread->td_ucred;
2352 vn_lock(vp, LK_SHARED | LK_RETRY);
2353 if (VOP_GETATTR(vp, &va, cred) == 0) {
2354 kve->kve_vn_fileid = va.va_fileid;
2355 kve->kve_vn_fsid = va.va_fsid;
2357 MAKEIMODE(va.va_type, va.va_mode);
2358 kve->kve_vn_size = va.va_size;
2359 kve->kve_vn_rdev = va.va_rdev;
2360 kve->kve_status = KF_ATTR_VALID;
2365 kve->kve_type = KVME_TYPE_NONE;
2366 kve->kve_ref_count = 0;
2367 kve->kve_shadow_count = 0;
2370 strlcpy(kve->kve_path, fullpath, sizeof(kve->kve_path));
2371 if (freepath != NULL)
2372 free(freepath, M_TEMP);
2374 /* Pack record size down */
2375 kve->kve_structsize = offsetof(struct kinfo_vmentry, kve_path) +
2376 strlen(kve->kve_path) + 1;
2377 kve->kve_structsize = roundup(kve->kve_structsize,
2379 if (sbuf_bcat(sb, kve, kve->kve_structsize) != 0)
2381 vm_map_lock_read(map);
2384 if (last_timestamp != map->timestamp) {
2385 vm_map_lookup_entry(map, addr - 1, &tmp_entry);
2389 vm_map_unlock_read(map);
2397 sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS)
2401 int error, error2, *name;
2404 sbuf_new_for_sysctl(&sb, NULL, sizeof(struct kinfo_vmentry), req);
2405 error = pget((pid_t)name[0], PGET_CANDEBUG | PGET_NOTWEXIT, &p);
2410 error = kern_proc_vmmap_out(p, &sb);
2411 error2 = sbuf_finish(&sb);
2413 return (error != 0 ? error : error2);
2416 #if defined(STACK) || defined(DDB)
2418 sysctl_kern_proc_kstack(SYSCTL_HANDLER_ARGS)
2420 struct kinfo_kstack *kkstp;
2421 int error, i, *name, numthreads;
2422 lwpid_t *lwpidarray;
2429 error = pget((pid_t)name[0], PGET_NOTINEXEC | PGET_WANTREAD, &p);
2433 kkstp = malloc(sizeof(*kkstp), M_TEMP, M_WAITOK);
2434 st = stack_create();
2440 if (numthreads < p->p_numthreads) {
2441 if (lwpidarray != NULL) {
2442 free(lwpidarray, M_TEMP);
2445 numthreads = p->p_numthreads;
2447 lwpidarray = malloc(sizeof(*lwpidarray) * numthreads, M_TEMP,
2455 * XXXRW: During the below loop, execve(2) and countless other sorts
2456 * of changes could have taken place. Should we check to see if the
2457 * vmspace has been replaced, or the like, in order to prevent
2458 * giving a snapshot that spans, say, execve(2), with some threads
2459 * before and some after? Among other things, the credentials could
2460 * have changed, in which case the right to extract debug info might
2461 * no longer be assured.
2463 FOREACH_THREAD_IN_PROC(p, td) {
2464 KASSERT(i < numthreads,
2465 ("sysctl_kern_proc_kstack: numthreads"));
2466 lwpidarray[i] = td->td_tid;
2470 for (i = 0; i < numthreads; i++) {
2471 td = thread_find(p, lwpidarray[i]);
2475 bzero(kkstp, sizeof(*kkstp));
2476 (void)sbuf_new(&sb, kkstp->kkst_trace,
2477 sizeof(kkstp->kkst_trace), SBUF_FIXEDLEN);
2479 kkstp->kkst_tid = td->td_tid;
2480 if (TD_IS_SWAPPED(td))
2481 kkstp->kkst_state = KKST_STATE_SWAPPED;
2482 else if (TD_IS_RUNNING(td))
2483 kkstp->kkst_state = KKST_STATE_RUNNING;
2485 kkstp->kkst_state = KKST_STATE_STACKOK;
2486 stack_save_td(st, td);
2490 stack_sbuf_print(&sb, st);
2493 error = SYSCTL_OUT(req, kkstp, sizeof(*kkstp));
2500 if (lwpidarray != NULL)
2501 free(lwpidarray, M_TEMP);
2503 free(kkstp, M_TEMP);
2509 * This sysctl allows a process to retrieve the full list of groups from
2510 * itself or another process.
2513 sysctl_kern_proc_groups(SYSCTL_HANDLER_ARGS)
2515 pid_t *pidp = (pid_t *)arg1;
2516 unsigned int arglen = arg2;
2523 if (*pidp == -1) { /* -1 means this process */
2524 p = req->td->td_proc;
2526 error = pget(*pidp, PGET_CANSEE, &p);
2531 cred = crhold(p->p_ucred);
2535 error = SYSCTL_OUT(req, cred->cr_groups,
2536 cred->cr_ngroups * sizeof(gid_t));
2542 * This sysctl allows a process to retrieve or/and set the resource limit for
2546 sysctl_kern_proc_rlimit(SYSCTL_HANDLER_ARGS)
2548 int *name = (int *)arg1;
2549 u_int namelen = arg2;
2558 which = (u_int)name[1];
2559 if (which >= RLIM_NLIMITS)
2562 if (req->newptr != NULL && req->newlen != sizeof(rlim))
2565 flags = PGET_HOLD | PGET_NOTWEXIT;
2566 if (req->newptr != NULL)
2567 flags |= PGET_CANDEBUG;
2569 flags |= PGET_CANSEE;
2570 error = pget((pid_t)name[0], flags, &p);
2577 if (req->oldptr != NULL) {
2579 lim_rlimit(p, which, &rlim);
2582 error = SYSCTL_OUT(req, &rlim, sizeof(rlim));
2589 if (req->newptr != NULL) {
2590 error = SYSCTL_IN(req, &rlim, sizeof(rlim));
2592 error = kern_proc_setrlimit(curthread, p, which, &rlim);
2601 * This sysctl allows a process to retrieve ps_strings structure location of
2605 sysctl_kern_proc_ps_strings(SYSCTL_HANDLER_ARGS)
2607 int *name = (int *)arg1;
2608 u_int namelen = arg2;
2610 vm_offset_t ps_strings;
2612 #ifdef COMPAT_FREEBSD32
2613 uint32_t ps_strings32;
2619 error = pget((pid_t)name[0], PGET_CANDEBUG, &p);
2622 #ifdef COMPAT_FREEBSD32
2623 if ((req->flags & SCTL_MASK32) != 0) {
2625 * We return 0 if the 32 bit emulation request is for a 64 bit
2628 ps_strings32 = SV_PROC_FLAG(p, SV_ILP32) != 0 ?
2629 PTROUT(p->p_sysent->sv_psstrings) : 0;
2631 error = SYSCTL_OUT(req, &ps_strings32, sizeof(ps_strings32));
2635 ps_strings = p->p_sysent->sv_psstrings;
2637 error = SYSCTL_OUT(req, &ps_strings, sizeof(ps_strings));
2642 * This sysctl allows a process to retrieve umask of another process.
2645 sysctl_kern_proc_umask(SYSCTL_HANDLER_ARGS)
2647 int *name = (int *)arg1;
2648 u_int namelen = arg2;
2656 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
2660 FILEDESC_SLOCK(p->p_fd);
2661 fd_cmask = p->p_fd->fd_cmask;
2662 FILEDESC_SUNLOCK(p->p_fd);
2664 error = SYSCTL_OUT(req, &fd_cmask, sizeof(fd_cmask));
2669 * This sysctl allows a process to set and retrieve binary osreldate of
2673 sysctl_kern_proc_osrel(SYSCTL_HANDLER_ARGS)
2675 int *name = (int *)arg1;
2676 u_int namelen = arg2;
2678 int flags, error, osrel;
2683 if (req->newptr != NULL && req->newlen != sizeof(osrel))
2686 flags = PGET_HOLD | PGET_NOTWEXIT;
2687 if (req->newptr != NULL)
2688 flags |= PGET_CANDEBUG;
2690 flags |= PGET_CANSEE;
2691 error = pget((pid_t)name[0], flags, &p);
2695 error = SYSCTL_OUT(req, &p->p_osrel, sizeof(p->p_osrel));
2699 if (req->newptr != NULL) {
2700 error = SYSCTL_IN(req, &osrel, sizeof(osrel));
2715 sysctl_kern_proc_sigtramp(SYSCTL_HANDLER_ARGS)
2717 int *name = (int *)arg1;
2718 u_int namelen = arg2;
2720 struct kinfo_sigtramp kst;
2721 const struct sysentvec *sv;
2723 #ifdef COMPAT_FREEBSD32
2724 struct kinfo_sigtramp32 kst32;
2730 error = pget((pid_t)name[0], PGET_CANDEBUG, &p);
2734 #ifdef COMPAT_FREEBSD32
2735 if ((req->flags & SCTL_MASK32) != 0) {
2736 bzero(&kst32, sizeof(kst32));
2737 if (SV_PROC_FLAG(p, SV_ILP32)) {
2738 if (sv->sv_sigcode_base != 0) {
2739 kst32.ksigtramp_start = sv->sv_sigcode_base;
2740 kst32.ksigtramp_end = sv->sv_sigcode_base +
2743 kst32.ksigtramp_start = sv->sv_psstrings -
2745 kst32.ksigtramp_end = sv->sv_psstrings;
2749 error = SYSCTL_OUT(req, &kst32, sizeof(kst32));
2753 bzero(&kst, sizeof(kst));
2754 if (sv->sv_sigcode_base != 0) {
2755 kst.ksigtramp_start = (char *)sv->sv_sigcode_base;
2756 kst.ksigtramp_end = (char *)sv->sv_sigcode_base +
2759 kst.ksigtramp_start = (char *)sv->sv_psstrings -
2761 kst.ksigtramp_end = (char *)sv->sv_psstrings;
2764 error = SYSCTL_OUT(req, &kst, sizeof(kst));
2768 SYSCTL_NODE(_kern, KERN_PROC, proc, CTLFLAG_RD, 0, "Process table");
2770 SYSCTL_PROC(_kern_proc, KERN_PROC_ALL, all, CTLFLAG_RD|CTLTYPE_STRUCT|
2771 CTLFLAG_MPSAFE, 0, 0, sysctl_kern_proc, "S,proc",
2772 "Return entire process table");
2774 static SYSCTL_NODE(_kern_proc, KERN_PROC_GID, gid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2775 sysctl_kern_proc, "Process table");
2777 static SYSCTL_NODE(_kern_proc, KERN_PROC_PGRP, pgrp, CTLFLAG_RD | CTLFLAG_MPSAFE,
2778 sysctl_kern_proc, "Process table");
2780 static SYSCTL_NODE(_kern_proc, KERN_PROC_RGID, rgid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2781 sysctl_kern_proc, "Process table");
2783 static SYSCTL_NODE(_kern_proc, KERN_PROC_SESSION, sid, CTLFLAG_RD |
2784 CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2786 static SYSCTL_NODE(_kern_proc, KERN_PROC_TTY, tty, CTLFLAG_RD | CTLFLAG_MPSAFE,
2787 sysctl_kern_proc, "Process table");
2789 static SYSCTL_NODE(_kern_proc, KERN_PROC_UID, uid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2790 sysctl_kern_proc, "Process table");
2792 static SYSCTL_NODE(_kern_proc, KERN_PROC_RUID, ruid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2793 sysctl_kern_proc, "Process table");
2795 static SYSCTL_NODE(_kern_proc, KERN_PROC_PID, pid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2796 sysctl_kern_proc, "Process table");
2798 static SYSCTL_NODE(_kern_proc, KERN_PROC_PROC, proc, CTLFLAG_RD | CTLFLAG_MPSAFE,
2799 sysctl_kern_proc, "Return process table, no threads");
2801 static SYSCTL_NODE(_kern_proc, KERN_PROC_ARGS, args,
2802 CTLFLAG_RW | CTLFLAG_CAPWR | CTLFLAG_ANYBODY | CTLFLAG_MPSAFE,
2803 sysctl_kern_proc_args, "Process argument list");
2805 static SYSCTL_NODE(_kern_proc, KERN_PROC_ENV, env, CTLFLAG_RD | CTLFLAG_MPSAFE,
2806 sysctl_kern_proc_env, "Process environment");
2808 static SYSCTL_NODE(_kern_proc, KERN_PROC_AUXV, auxv, CTLFLAG_RD |
2809 CTLFLAG_MPSAFE, sysctl_kern_proc_auxv, "Process ELF auxiliary vector");
2811 static SYSCTL_NODE(_kern_proc, KERN_PROC_PATHNAME, pathname, CTLFLAG_RD |
2812 CTLFLAG_MPSAFE, sysctl_kern_proc_pathname, "Process executable path");
2814 static SYSCTL_NODE(_kern_proc, KERN_PROC_SV_NAME, sv_name, CTLFLAG_RD |
2815 CTLFLAG_MPSAFE, sysctl_kern_proc_sv_name,
2816 "Process syscall vector name (ABI type)");
2818 static SYSCTL_NODE(_kern_proc, (KERN_PROC_GID | KERN_PROC_INC_THREAD), gid_td,
2819 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2821 static SYSCTL_NODE(_kern_proc, (KERN_PROC_PGRP | KERN_PROC_INC_THREAD), pgrp_td,
2822 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2824 static SYSCTL_NODE(_kern_proc, (KERN_PROC_RGID | KERN_PROC_INC_THREAD), rgid_td,
2825 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2827 static SYSCTL_NODE(_kern_proc, (KERN_PROC_SESSION | KERN_PROC_INC_THREAD),
2828 sid_td, CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2830 static SYSCTL_NODE(_kern_proc, (KERN_PROC_TTY | KERN_PROC_INC_THREAD), tty_td,
2831 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2833 static SYSCTL_NODE(_kern_proc, (KERN_PROC_UID | KERN_PROC_INC_THREAD), uid_td,
2834 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2836 static SYSCTL_NODE(_kern_proc, (KERN_PROC_RUID | KERN_PROC_INC_THREAD), ruid_td,
2837 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2839 static SYSCTL_NODE(_kern_proc, (KERN_PROC_PID | KERN_PROC_INC_THREAD), pid_td,
2840 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2842 static SYSCTL_NODE(_kern_proc, (KERN_PROC_PROC | KERN_PROC_INC_THREAD), proc_td,
2843 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc,
2844 "Return process table, no threads");
2846 #ifdef COMPAT_FREEBSD7
2847 static SYSCTL_NODE(_kern_proc, KERN_PROC_OVMMAP, ovmmap, CTLFLAG_RD |
2848 CTLFLAG_MPSAFE, sysctl_kern_proc_ovmmap, "Old Process vm map entries");
2851 static SYSCTL_NODE(_kern_proc, KERN_PROC_VMMAP, vmmap, CTLFLAG_RD |
2852 CTLFLAG_MPSAFE, sysctl_kern_proc_vmmap, "Process vm map entries");
2854 #if defined(STACK) || defined(DDB)
2855 static SYSCTL_NODE(_kern_proc, KERN_PROC_KSTACK, kstack, CTLFLAG_RD |
2856 CTLFLAG_MPSAFE, sysctl_kern_proc_kstack, "Process kernel stacks");
2859 static SYSCTL_NODE(_kern_proc, KERN_PROC_GROUPS, groups, CTLFLAG_RD |
2860 CTLFLAG_MPSAFE, sysctl_kern_proc_groups, "Process groups");
2862 static SYSCTL_NODE(_kern_proc, KERN_PROC_RLIMIT, rlimit, CTLFLAG_RW |
2863 CTLFLAG_ANYBODY | CTLFLAG_MPSAFE, sysctl_kern_proc_rlimit,
2864 "Process resource limits");
2866 static SYSCTL_NODE(_kern_proc, KERN_PROC_PS_STRINGS, ps_strings, CTLFLAG_RD |
2867 CTLFLAG_MPSAFE, sysctl_kern_proc_ps_strings,
2868 "Process ps_strings location");
2870 static SYSCTL_NODE(_kern_proc, KERN_PROC_UMASK, umask, CTLFLAG_RD |
2871 CTLFLAG_MPSAFE, sysctl_kern_proc_umask, "Process umask");
2873 static SYSCTL_NODE(_kern_proc, KERN_PROC_OSREL, osrel, CTLFLAG_RW |
2874 CTLFLAG_ANYBODY | CTLFLAG_MPSAFE, sysctl_kern_proc_osrel,
2875 "Process binary osreldate");
2877 static SYSCTL_NODE(_kern_proc, KERN_PROC_SIGTRAMP, sigtramp, CTLFLAG_RD |
2878 CTLFLAG_MPSAFE, sysctl_kern_proc_sigtramp,
2879 "Process signal trampoline location");
2886 struct proc *cp, *p;
2888 bool restart, seen_stopped, seen_exiting, stopped_some;
2892 * stop_all_proc() assumes that all process which have
2893 * usermode must be stopped, except current process, for
2894 * obvious reasons. Since other threads in the process
2895 * establishing global stop could unstop something, disable
2896 * calls from multithreaded processes as precaution. The
2897 * service must not be user-callable anyway.
2899 KASSERT((cp->p_flag & P_HADTHREADS) == 0 ||
2900 (cp->p_flag & P_KTHREAD) != 0, ("mt stop_all_proc"));
2903 sx_xlock(&allproc_lock);
2905 seen_exiting = seen_stopped = stopped_some = restart = false;
2906 LIST_REMOVE(cp, p_list);
2907 LIST_INSERT_HEAD(&allproc, cp, p_list);
2909 p = LIST_NEXT(cp, p_list);
2912 LIST_REMOVE(cp, p_list);
2913 LIST_INSERT_AFTER(p, cp, p_list);
2915 if ((p->p_flag & (P_KTHREAD | P_SYSTEM |
2916 P_TOTAL_STOP)) != 0) {
2920 if ((p->p_flag & P_WEXIT) != 0) {
2921 seen_exiting = true;
2925 if (P_SHOULDSTOP(p) == P_STOPPED_SINGLE) {
2927 * Stopped processes are tolerated when there
2928 * are no other processes which might continue
2929 * them. P_STOPPED_SINGLE but not
2930 * P_TOTAL_STOP process still has at least one
2933 seen_stopped = true;
2938 sx_xunlock(&allproc_lock);
2939 r = thread_single(p, SINGLE_ALLPROC);
2943 stopped_some = true;
2946 sx_xlock(&allproc_lock);
2948 /* Catch forked children we did not see in iteration. */
2949 if (gen != allproc_gen)
2951 sx_xunlock(&allproc_lock);
2952 if (restart || stopped_some || seen_exiting || seen_stopped) {
2953 kern_yield(PRI_USER);
2959 resume_all_proc(void)
2961 struct proc *cp, *p;
2964 sx_xlock(&allproc_lock);
2965 LIST_REMOVE(cp, p_list);
2966 LIST_INSERT_HEAD(&allproc, cp, p_list);
2968 p = LIST_NEXT(cp, p_list);
2971 LIST_REMOVE(cp, p_list);
2972 LIST_INSERT_AFTER(p, cp, p_list);
2974 if ((p->p_flag & P_TOTAL_STOP) != 0) {
2975 sx_xunlock(&allproc_lock);
2977 thread_single_end(p, SINGLE_ALLPROC);
2980 sx_xlock(&allproc_lock);
2985 sx_xunlock(&allproc_lock);
2988 #define TOTAL_STOP_DEBUG 1
2989 #ifdef TOTAL_STOP_DEBUG
2990 volatile static int ap_resume;
2991 #include <sys/mount.h>
2994 sysctl_debug_stop_all_proc(SYSCTL_HANDLER_ARGS)
3000 error = sysctl_handle_int(oidp, &val, 0, req);
3001 if (error != 0 || req->newptr == NULL)
3006 while (ap_resume == 0)
3014 SYSCTL_PROC(_debug, OID_AUTO, stop_all_proc, CTLTYPE_INT | CTLFLAG_RW |
3015 CTLFLAG_MPSAFE, __DEVOLATILE(int *, &ap_resume), 0,
3016 sysctl_debug_stop_all_proc, "I",