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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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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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, , ctor, entry, "struct proc *", "int", "void *",
97 SDT_PROBE_DEFINE4(proc, , ctor, return, "struct proc *", "int", "void *",
99 SDT_PROBE_DEFINE4(proc, , dtor, entry, "struct proc *", "int", "void *",
101 SDT_PROBE_DEFINE3(proc, , dtor, return, "struct proc *", "int", "void *");
102 SDT_PROBE_DEFINE3(proc, , init, entry, "struct proc *", "int", "int");
103 SDT_PROBE_DEFINE3(proc, , init, return, "struct proc *", "int", "int");
105 MALLOC_DEFINE(M_PGRP, "pgrp", "process group header");
106 MALLOC_DEFINE(M_SESSION, "session", "session header");
107 static MALLOC_DEFINE(M_PROC, "proc", "Proc structures");
108 MALLOC_DEFINE(M_SUBPROC, "subproc", "Proc sub-structures");
110 static void doenterpgrp(struct proc *, struct pgrp *);
111 static void orphanpg(struct pgrp *pg);
112 static void fill_kinfo_aggregate(struct proc *p, struct kinfo_proc *kp);
113 static void fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp);
114 static void fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp,
116 static void pgadjustjobc(struct pgrp *pgrp, int entering);
117 static void pgdelete(struct pgrp *);
118 static int proc_ctor(void *mem, int size, void *arg, int flags);
119 static void proc_dtor(void *mem, int size, void *arg);
120 static int proc_init(void *mem, int size, int flags);
121 static void proc_fini(void *mem, int size);
122 static void pargs_free(struct pargs *pa);
123 static struct proc *zpfind_locked(pid_t pid);
126 * Other process lists
128 struct pidhashhead *pidhashtbl;
130 struct pgrphashhead *pgrphashtbl;
132 struct proclist allproc;
133 struct proclist zombproc;
134 struct sx allproc_lock;
135 struct sx proctree_lock;
136 struct mtx ppeers_lock;
137 uma_zone_t proc_zone;
140 * The offset of various fields in struct proc and struct thread.
141 * These are used by kernel debuggers to enumerate kernel threads and
144 const int proc_off_p_pid = offsetof(struct proc, p_pid);
145 const int proc_off_p_comm = offsetof(struct proc, p_comm);
146 const int proc_off_p_list = offsetof(struct proc, p_list);
147 const int proc_off_p_threads = offsetof(struct proc, p_threads);
148 const int thread_off_td_tid = offsetof(struct thread, td_tid);
149 const int thread_off_td_name = offsetof(struct thread, td_name);
150 const int thread_off_td_oncpu = offsetof(struct thread, td_oncpu);
151 const int thread_off_td_pcb = offsetof(struct thread, td_pcb);
152 const int thread_off_td_plist = offsetof(struct thread, td_plist);
154 int kstack_pages = KSTACK_PAGES;
155 SYSCTL_INT(_kern, OID_AUTO, kstack_pages, CTLFLAG_RD, &kstack_pages, 0,
156 "Kernel stack size in pages");
157 static int vmmap_skip_res_cnt = 0;
158 SYSCTL_INT(_kern, OID_AUTO, proc_vmmap_skip_resident_count, CTLFLAG_RW,
159 &vmmap_skip_res_cnt, 0,
160 "Skip calculation of the pages resident count in kern.proc.vmmap");
162 CTASSERT(sizeof(struct kinfo_proc) == KINFO_PROC_SIZE);
163 #ifdef COMPAT_FREEBSD32
164 CTASSERT(sizeof(struct kinfo_proc32) == KINFO_PROC32_SIZE);
168 * Initialize global process hashing structures.
174 sx_init(&allproc_lock, "allproc");
175 sx_init(&proctree_lock, "proctree");
176 mtx_init(&ppeers_lock, "p_peers", NULL, MTX_DEF);
178 LIST_INIT(&zombproc);
179 pidhashtbl = hashinit(maxproc / 4, M_PROC, &pidhash);
180 pgrphashtbl = hashinit(maxproc / 4, M_PROC, &pgrphash);
181 proc_zone = uma_zcreate("PROC", sched_sizeof_proc(),
182 proc_ctor, proc_dtor, proc_init, proc_fini,
183 UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
188 * Prepare a proc for use.
191 proc_ctor(void *mem, int size, void *arg, int flags)
195 p = (struct proc *)mem;
196 SDT_PROBE4(proc, , ctor , entry, p, size, arg, flags);
197 EVENTHANDLER_INVOKE(process_ctor, p);
198 SDT_PROBE4(proc, , ctor , return, p, size, arg, flags);
203 * Reclaim a proc after use.
206 proc_dtor(void *mem, int size, void *arg)
211 /* INVARIANTS checks go here */
212 p = (struct proc *)mem;
213 td = FIRST_THREAD_IN_PROC(p);
214 SDT_PROBE4(proc, , dtor, entry, p, size, arg, td);
217 KASSERT((p->p_numthreads == 1),
218 ("bad number of threads in exiting process"));
219 KASSERT(STAILQ_EMPTY(&p->p_ktr), ("proc_dtor: non-empty p_ktr"));
221 /* Free all OSD associated to this thread. */
224 EVENTHANDLER_INVOKE(process_dtor, p);
225 if (p->p_ksi != NULL)
226 KASSERT(! KSI_ONQ(p->p_ksi), ("SIGCHLD queue"));
227 SDT_PROBE3(proc, , dtor, return, p, size, arg);
231 * Initialize type-stable parts of a proc (when newly created).
234 proc_init(void *mem, int size, int flags)
238 p = (struct proc *)mem;
239 SDT_PROBE3(proc, , init, entry, p, size, flags);
240 p->p_sched = (struct p_sched *)&p[1];
241 bzero(&p->p_mtx, sizeof(struct mtx));
242 mtx_init(&p->p_mtx, "process lock", NULL, MTX_DEF | MTX_DUPOK);
243 mtx_init(&p->p_slock, "process slock", NULL, MTX_SPIN | MTX_RECURSE);
244 cv_init(&p->p_pwait, "ppwait");
245 cv_init(&p->p_dbgwait, "dbgwait");
246 TAILQ_INIT(&p->p_threads); /* all threads in proc */
247 EVENTHANDLER_INVOKE(process_init, p);
248 p->p_stats = pstats_alloc();
250 SDT_PROBE3(proc, , init, return, p, size, flags);
255 * UMA should ensure that this function is never called.
256 * Freeing a proc structure would violate type stability.
259 proc_fini(void *mem, int size)
264 p = (struct proc *)mem;
265 EVENTHANDLER_INVOKE(process_fini, p);
266 pstats_free(p->p_stats);
267 thread_free(FIRST_THREAD_IN_PROC(p));
268 mtx_destroy(&p->p_mtx);
269 if (p->p_ksi != NULL)
270 ksiginfo_free(p->p_ksi);
272 panic("proc reclaimed");
277 * Is p an inferior of the current process?
280 inferior(struct proc *p)
283 sx_assert(&proctree_lock, SX_LOCKED);
284 PROC_LOCK_ASSERT(p, MA_OWNED);
285 for (; p != curproc; p = proc_realparent(p)) {
293 pfind_locked(pid_t pid)
297 sx_assert(&allproc_lock, SX_LOCKED);
298 LIST_FOREACH(p, PIDHASH(pid), p_hash) {
299 if (p->p_pid == pid) {
301 if (p->p_state == PRS_NEW) {
312 * Locate a process by number; return only "live" processes -- i.e., neither
313 * zombies nor newly born but incompletely initialized processes. By not
314 * returning processes in the PRS_NEW state, we allow callers to avoid
315 * testing for that condition to avoid dereferencing p_ucred, et al.
322 sx_slock(&allproc_lock);
323 p = pfind_locked(pid);
324 sx_sunlock(&allproc_lock);
329 pfind_tid_locked(pid_t tid)
334 sx_assert(&allproc_lock, SX_LOCKED);
335 FOREACH_PROC_IN_SYSTEM(p) {
337 if (p->p_state == PRS_NEW) {
341 FOREACH_THREAD_IN_PROC(p, td) {
342 if (td->td_tid == tid)
352 * Locate a process group by number.
353 * The caller must hold proctree_lock.
359 register struct pgrp *pgrp;
361 sx_assert(&proctree_lock, SX_LOCKED);
363 LIST_FOREACH(pgrp, PGRPHASH(pgid), pg_hash) {
364 if (pgrp->pg_id == pgid) {
373 * Locate process and do additional manipulations, depending on flags.
376 pget(pid_t pid, int flags, struct proc **pp)
381 sx_slock(&allproc_lock);
382 if (pid <= PID_MAX) {
383 p = pfind_locked(pid);
384 if (p == NULL && (flags & PGET_NOTWEXIT) == 0)
385 p = zpfind_locked(pid);
386 } else if ((flags & PGET_NOTID) == 0) {
387 p = pfind_tid_locked(pid);
391 sx_sunlock(&allproc_lock);
394 if ((flags & PGET_CANSEE) != 0) {
395 error = p_cansee(curthread, p);
399 if ((flags & PGET_CANDEBUG) != 0) {
400 error = p_candebug(curthread, p);
404 if ((flags & PGET_ISCURRENT) != 0 && curproc != p) {
408 if ((flags & PGET_NOTWEXIT) != 0 && (p->p_flag & P_WEXIT) != 0) {
412 if ((flags & PGET_NOTINEXEC) != 0 && (p->p_flag & P_INEXEC) != 0) {
414 * XXXRW: Not clear ESRCH is the right error during proc
420 if ((flags & PGET_HOLD) != 0) {
432 * Create a new process group.
433 * pgid must be equal to the pid of p.
434 * Begin a new session if required.
437 enterpgrp(p, pgid, pgrp, sess)
438 register struct proc *p;
441 struct session *sess;
444 sx_assert(&proctree_lock, SX_XLOCKED);
446 KASSERT(pgrp != NULL, ("enterpgrp: pgrp == NULL"));
447 KASSERT(p->p_pid == pgid,
448 ("enterpgrp: new pgrp and pid != pgid"));
449 KASSERT(pgfind(pgid) == NULL,
450 ("enterpgrp: pgrp with pgid exists"));
451 KASSERT(!SESS_LEADER(p),
452 ("enterpgrp: session leader attempted setpgrp"));
454 mtx_init(&pgrp->pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
460 mtx_init(&sess->s_mtx, "session", NULL, MTX_DEF);
462 p->p_flag &= ~P_CONTROLT;
466 sess->s_sid = p->p_pid;
467 refcount_init(&sess->s_count, 1);
468 sess->s_ttyvp = NULL;
469 sess->s_ttydp = NULL;
471 bcopy(p->p_session->s_login, sess->s_login,
472 sizeof(sess->s_login));
473 pgrp->pg_session = sess;
474 KASSERT(p == curproc,
475 ("enterpgrp: mksession and p != curproc"));
477 pgrp->pg_session = p->p_session;
478 sess_hold(pgrp->pg_session);
482 LIST_INIT(&pgrp->pg_members);
485 * As we have an exclusive lock of proctree_lock,
486 * this should not deadlock.
488 LIST_INSERT_HEAD(PGRPHASH(pgid), pgrp, pg_hash);
490 SLIST_INIT(&pgrp->pg_sigiolst);
493 doenterpgrp(p, pgrp);
499 * Move p to an existing process group
502 enterthispgrp(p, pgrp)
503 register struct proc *p;
507 sx_assert(&proctree_lock, SX_XLOCKED);
508 PROC_LOCK_ASSERT(p, MA_NOTOWNED);
509 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
510 PGRP_LOCK_ASSERT(p->p_pgrp, MA_NOTOWNED);
511 SESS_LOCK_ASSERT(p->p_session, MA_NOTOWNED);
512 KASSERT(pgrp->pg_session == p->p_session,
513 ("%s: pgrp's session %p, p->p_session %p.\n",
517 KASSERT(pgrp != p->p_pgrp,
518 ("%s: p belongs to pgrp.", __func__));
520 doenterpgrp(p, pgrp);
526 * Move p to a process group
533 struct pgrp *savepgrp;
535 sx_assert(&proctree_lock, SX_XLOCKED);
536 PROC_LOCK_ASSERT(p, MA_NOTOWNED);
537 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
538 PGRP_LOCK_ASSERT(p->p_pgrp, MA_NOTOWNED);
539 SESS_LOCK_ASSERT(p->p_session, MA_NOTOWNED);
541 savepgrp = p->p_pgrp;
544 * Adjust eligibility of affected pgrps to participate in job control.
545 * Increment eligibility counts before decrementing, otherwise we
546 * could reach 0 spuriously during the first call.
549 fixjobc(p, p->p_pgrp, 0);
554 LIST_REMOVE(p, p_pglist);
557 LIST_INSERT_HEAD(&pgrp->pg_members, p, p_pglist);
558 PGRP_UNLOCK(savepgrp);
560 if (LIST_EMPTY(&savepgrp->pg_members))
565 * remove process from process group
569 register struct proc *p;
571 struct pgrp *savepgrp;
573 sx_assert(&proctree_lock, SX_XLOCKED);
574 savepgrp = p->p_pgrp;
577 LIST_REMOVE(p, p_pglist);
580 PGRP_UNLOCK(savepgrp);
581 if (LIST_EMPTY(&savepgrp->pg_members))
587 * delete a process group
591 register struct pgrp *pgrp;
593 struct session *savesess;
596 sx_assert(&proctree_lock, SX_XLOCKED);
597 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
598 SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED);
601 * Reset any sigio structures pointing to us as a result of
602 * F_SETOWN with our pgid.
604 funsetownlst(&pgrp->pg_sigiolst);
607 tp = pgrp->pg_session->s_ttyp;
608 LIST_REMOVE(pgrp, pg_hash);
609 savesess = pgrp->pg_session;
612 /* Remove the reference to the pgrp before deallocating it. */
615 tty_rel_pgrp(tp, pgrp);
618 mtx_destroy(&pgrp->pg_mtx);
620 sess_release(savesess);
624 pgadjustjobc(pgrp, entering)
634 if (pgrp->pg_jobc == 0)
641 * Adjust pgrp jobc counters when specified process changes process group.
642 * We count the number of processes in each process group that "qualify"
643 * the group for terminal job control (those with a parent in a different
644 * process group of the same session). If that count reaches zero, the
645 * process group becomes orphaned. Check both the specified process'
646 * process group and that of its children.
647 * entering == 0 => p is leaving specified group.
648 * entering == 1 => p is entering specified group.
651 fixjobc(p, pgrp, entering)
652 register struct proc *p;
653 register struct pgrp *pgrp;
656 register struct pgrp *hispgrp;
657 register struct session *mysession;
659 sx_assert(&proctree_lock, SX_LOCKED);
660 PROC_LOCK_ASSERT(p, MA_NOTOWNED);
661 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
662 SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED);
665 * Check p's parent to see whether p qualifies its own process
666 * group; if so, adjust count for p's process group.
668 mysession = pgrp->pg_session;
669 if ((hispgrp = p->p_pptr->p_pgrp) != pgrp &&
670 hispgrp->pg_session == mysession)
671 pgadjustjobc(pgrp, entering);
674 * Check this process' children to see whether they qualify
675 * their process groups; if so, adjust counts for children's
678 LIST_FOREACH(p, &p->p_children, p_sibling) {
680 if (hispgrp == pgrp ||
681 hispgrp->pg_session != mysession)
684 if (p->p_state == PRS_ZOMBIE) {
689 pgadjustjobc(hispgrp, entering);
694 * A process group has become orphaned;
695 * if there are any stopped processes in the group,
696 * hang-up all process in that group.
702 register struct proc *p;
704 PGRP_LOCK_ASSERT(pg, MA_OWNED);
706 LIST_FOREACH(p, &pg->pg_members, p_pglist) {
708 if (P_SHOULDSTOP(p) == P_STOPPED_SIG) {
710 LIST_FOREACH(p, &pg->pg_members, p_pglist) {
712 kern_psignal(p, SIGHUP);
713 kern_psignal(p, SIGCONT);
723 sess_hold(struct session *s)
726 refcount_acquire(&s->s_count);
730 sess_release(struct session *s)
733 if (refcount_release(&s->s_count)) {
734 if (s->s_ttyp != NULL) {
736 tty_rel_sess(s->s_ttyp, s);
738 mtx_destroy(&s->s_mtx);
745 DB_SHOW_COMMAND(pgrpdump, pgrpdump)
747 register struct pgrp *pgrp;
748 register struct proc *p;
751 for (i = 0; i <= pgrphash; i++) {
752 if (!LIST_EMPTY(&pgrphashtbl[i])) {
753 printf("\tindx %d\n", i);
754 LIST_FOREACH(pgrp, &pgrphashtbl[i], pg_hash) {
756 "\tpgrp %p, pgid %ld, sess %p, sesscnt %d, mem %p\n",
757 (void *)pgrp, (long)pgrp->pg_id,
758 (void *)pgrp->pg_session,
759 pgrp->pg_session->s_count,
760 (void *)LIST_FIRST(&pgrp->pg_members));
761 LIST_FOREACH(p, &pgrp->pg_members, p_pglist) {
762 printf("\t\tpid %ld addr %p pgrp %p\n",
763 (long)p->p_pid, (void *)p,
773 * Calculate the kinfo_proc members which contain process-wide
775 * Must be called with the target process locked.
778 fill_kinfo_aggregate(struct proc *p, struct kinfo_proc *kp)
782 PROC_LOCK_ASSERT(p, MA_OWNED);
786 FOREACH_THREAD_IN_PROC(p, td) {
788 kp->ki_pctcpu += sched_pctcpu(td);
789 kp->ki_estcpu += td->td_estcpu;
795 * Clear kinfo_proc and fill in any information that is common
796 * to all threads in the process.
797 * Must be called with the target process locked.
800 fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp)
808 PROC_LOCK_ASSERT(p, MA_OWNED);
809 bzero(kp, sizeof(*kp));
811 kp->ki_structsize = sizeof(*kp);
813 kp->ki_addr =/* p->p_addr; */0; /* XXX */
814 kp->ki_args = p->p_args;
815 kp->ki_textvp = p->p_textvp;
817 kp->ki_tracep = p->p_tracevp;
818 kp->ki_traceflag = p->p_traceflag;
821 kp->ki_vmspace = p->p_vmspace;
822 kp->ki_flag = p->p_flag;
823 kp->ki_flag2 = p->p_flag2;
826 kp->ki_uid = cred->cr_uid;
827 kp->ki_ruid = cred->cr_ruid;
828 kp->ki_svuid = cred->cr_svuid;
830 if (cred->cr_flags & CRED_FLAG_CAPMODE)
831 kp->ki_cr_flags |= KI_CRF_CAPABILITY_MODE;
832 /* XXX bde doesn't like KI_NGROUPS */
833 if (cred->cr_ngroups > KI_NGROUPS) {
834 kp->ki_ngroups = KI_NGROUPS;
835 kp->ki_cr_flags |= KI_CRF_GRP_OVERFLOW;
837 kp->ki_ngroups = cred->cr_ngroups;
838 bcopy(cred->cr_groups, kp->ki_groups,
839 kp->ki_ngroups * sizeof(gid_t));
840 kp->ki_rgid = cred->cr_rgid;
841 kp->ki_svgid = cred->cr_svgid;
842 /* If jailed(cred), emulate the old P_JAILED flag. */
844 kp->ki_flag |= P_JAILED;
845 /* If inside the jail, use 0 as a jail ID. */
846 if (cred->cr_prison != curthread->td_ucred->cr_prison)
847 kp->ki_jid = cred->cr_prison->pr_id;
849 strlcpy(kp->ki_loginclass, cred->cr_loginclass->lc_name,
850 sizeof(kp->ki_loginclass));
854 mtx_lock(&ps->ps_mtx);
855 kp->ki_sigignore = ps->ps_sigignore;
856 kp->ki_sigcatch = ps->ps_sigcatch;
857 mtx_unlock(&ps->ps_mtx);
859 if (p->p_state != PRS_NEW &&
860 p->p_state != PRS_ZOMBIE &&
861 p->p_vmspace != NULL) {
862 struct vmspace *vm = p->p_vmspace;
864 kp->ki_size = vm->vm_map.size;
865 kp->ki_rssize = vmspace_resident_count(vm); /*XXX*/
866 FOREACH_THREAD_IN_PROC(p, td0) {
867 if (!TD_IS_SWAPPED(td0))
868 kp->ki_rssize += td0->td_kstack_pages;
870 kp->ki_swrss = vm->vm_swrss;
871 kp->ki_tsize = vm->vm_tsize;
872 kp->ki_dsize = vm->vm_dsize;
873 kp->ki_ssize = vm->vm_ssize;
874 } else if (p->p_state == PRS_ZOMBIE)
876 if (kp->ki_flag & P_INMEM)
877 kp->ki_sflag = PS_INMEM;
880 /* Calculate legacy swtime as seconds since 'swtick'. */
881 kp->ki_swtime = (ticks - p->p_swtick) / hz;
882 kp->ki_pid = p->p_pid;
883 kp->ki_nice = p->p_nice;
884 kp->ki_fibnum = p->p_fibnum;
885 kp->ki_start = p->p_stats->p_start;
886 timevaladd(&kp->ki_start, &boottime);
888 rufetch(p, &kp->ki_rusage);
889 kp->ki_runtime = cputick2usec(p->p_rux.rux_runtime);
890 calcru(p, &kp->ki_rusage.ru_utime, &kp->ki_rusage.ru_stime);
892 calccru(p, &kp->ki_childutime, &kp->ki_childstime);
893 /* Some callers want child times in a single value. */
894 kp->ki_childtime = kp->ki_childstime;
895 timevaladd(&kp->ki_childtime, &kp->ki_childutime);
897 FOREACH_THREAD_IN_PROC(p, td0)
898 kp->ki_cow += td0->td_cow;
902 kp->ki_pgid = p->p_pgrp->pg_id;
903 kp->ki_jobc = p->p_pgrp->pg_jobc;
904 sp = p->p_pgrp->pg_session;
907 kp->ki_sid = sp->s_sid;
909 strlcpy(kp->ki_login, sp->s_login,
910 sizeof(kp->ki_login));
912 kp->ki_kiflag |= KI_CTTY;
914 kp->ki_kiflag |= KI_SLEADER;
915 /* XXX proctree_lock */
920 if ((p->p_flag & P_CONTROLT) && tp != NULL) {
921 kp->ki_tdev = tty_udev(tp);
922 kp->ki_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID;
924 kp->ki_tsid = tp->t_session->s_sid;
927 if (p->p_comm[0] != '\0')
928 strlcpy(kp->ki_comm, p->p_comm, sizeof(kp->ki_comm));
929 if (p->p_sysent && p->p_sysent->sv_name != NULL &&
930 p->p_sysent->sv_name[0] != '\0')
931 strlcpy(kp->ki_emul, p->p_sysent->sv_name, sizeof(kp->ki_emul));
932 kp->ki_siglist = p->p_siglist;
933 kp->ki_xstat = p->p_xstat;
934 kp->ki_acflag = p->p_acflag;
935 kp->ki_lock = p->p_lock;
937 kp->ki_ppid = p->p_pptr->p_pid;
941 * Fill in information that is thread specific. Must be called with
942 * target process locked. If 'preferthread' is set, overwrite certain
943 * process-related fields that are maintained for both threads and
947 fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp, int preferthread)
953 PROC_LOCK_ASSERT(p, MA_OWNED);
958 if (td->td_wmesg != NULL)
959 strlcpy(kp->ki_wmesg, td->td_wmesg, sizeof(kp->ki_wmesg));
961 bzero(kp->ki_wmesg, sizeof(kp->ki_wmesg));
962 if (strlcpy(kp->ki_tdname, td->td_name, sizeof(kp->ki_tdname)) >=
963 sizeof(kp->ki_tdname)) {
964 strlcpy(kp->ki_moretdname,
965 td->td_name + sizeof(kp->ki_tdname) - 1,
966 sizeof(kp->ki_moretdname));
968 bzero(kp->ki_moretdname, sizeof(kp->ki_moretdname));
970 if (TD_ON_LOCK(td)) {
971 kp->ki_kiflag |= KI_LOCKBLOCK;
972 strlcpy(kp->ki_lockname, td->td_lockname,
973 sizeof(kp->ki_lockname));
975 kp->ki_kiflag &= ~KI_LOCKBLOCK;
976 bzero(kp->ki_lockname, sizeof(kp->ki_lockname));
979 if (p->p_state == PRS_NORMAL) { /* approximate. */
980 if (TD_ON_RUNQ(td) ||
984 } else if (P_SHOULDSTOP(p)) {
986 } else if (TD_IS_SLEEPING(td)) {
987 kp->ki_stat = SSLEEP;
988 } else if (TD_ON_LOCK(td)) {
993 } else if (p->p_state == PRS_ZOMBIE) {
999 /* Things in the thread */
1000 kp->ki_wchan = td->td_wchan;
1001 kp->ki_pri.pri_level = td->td_priority;
1002 kp->ki_pri.pri_native = td->td_base_pri;
1003 kp->ki_lastcpu = td->td_lastcpu;
1004 kp->ki_oncpu = td->td_oncpu;
1005 kp->ki_tdflags = td->td_flags;
1006 kp->ki_tid = td->td_tid;
1007 kp->ki_numthreads = p->p_numthreads;
1008 kp->ki_pcb = td->td_pcb;
1009 kp->ki_kstack = (void *)td->td_kstack;
1010 kp->ki_slptime = (ticks - td->td_slptick) / hz;
1011 kp->ki_pri.pri_class = td->td_pri_class;
1012 kp->ki_pri.pri_user = td->td_user_pri;
1015 rufetchtd(td, &kp->ki_rusage);
1016 kp->ki_runtime = cputick2usec(td->td_rux.rux_runtime);
1017 kp->ki_pctcpu = sched_pctcpu(td);
1018 kp->ki_estcpu = td->td_estcpu;
1019 kp->ki_cow = td->td_cow;
1022 /* We can't get this anymore but ps etc never used it anyway. */
1026 kp->ki_siglist = td->td_siglist;
1027 kp->ki_sigmask = td->td_sigmask;
1034 * Fill in a kinfo_proc structure for the specified process.
1035 * Must be called with the target process locked.
1038 fill_kinfo_proc(struct proc *p, struct kinfo_proc *kp)
1041 MPASS(FIRST_THREAD_IN_PROC(p) != NULL);
1043 fill_kinfo_proc_only(p, kp);
1044 fill_kinfo_thread(FIRST_THREAD_IN_PROC(p), kp, 0);
1045 fill_kinfo_aggregate(p, kp);
1052 return (malloc(sizeof(struct pstats), M_SUBPROC, M_ZERO|M_WAITOK));
1056 * Copy parts of p_stats; zero the rest of p_stats (statistics).
1059 pstats_fork(struct pstats *src, struct pstats *dst)
1062 bzero(&dst->pstat_startzero,
1063 __rangeof(struct pstats, pstat_startzero, pstat_endzero));
1064 bcopy(&src->pstat_startcopy, &dst->pstat_startcopy,
1065 __rangeof(struct pstats, pstat_startcopy, pstat_endcopy));
1069 pstats_free(struct pstats *ps)
1072 free(ps, M_SUBPROC);
1075 static struct proc *
1076 zpfind_locked(pid_t pid)
1080 sx_assert(&allproc_lock, SX_LOCKED);
1081 LIST_FOREACH(p, &zombproc, p_list) {
1082 if (p->p_pid == pid) {
1091 * Locate a zombie process by number
1098 sx_slock(&allproc_lock);
1099 p = zpfind_locked(pid);
1100 sx_sunlock(&allproc_lock);
1104 #ifdef COMPAT_FREEBSD32
1107 * This function is typically used to copy out the kernel address, so
1108 * it can be replaced by assignment of zero.
1110 static inline uint32_t
1111 ptr32_trim(void *ptr)
1115 uptr = (uintptr_t)ptr;
1116 return ((uptr > UINT_MAX) ? 0 : uptr);
1119 #define PTRTRIM_CP(src,dst,fld) \
1120 do { (dst).fld = ptr32_trim((src).fld); } while (0)
1123 freebsd32_kinfo_proc_out(const struct kinfo_proc *ki, struct kinfo_proc32 *ki32)
1127 bzero(ki32, sizeof(struct kinfo_proc32));
1128 ki32->ki_structsize = sizeof(struct kinfo_proc32);
1129 CP(*ki, *ki32, ki_layout);
1130 PTRTRIM_CP(*ki, *ki32, ki_args);
1131 PTRTRIM_CP(*ki, *ki32, ki_paddr);
1132 PTRTRIM_CP(*ki, *ki32, ki_addr);
1133 PTRTRIM_CP(*ki, *ki32, ki_tracep);
1134 PTRTRIM_CP(*ki, *ki32, ki_textvp);
1135 PTRTRIM_CP(*ki, *ki32, ki_fd);
1136 PTRTRIM_CP(*ki, *ki32, ki_vmspace);
1137 PTRTRIM_CP(*ki, *ki32, ki_wchan);
1138 CP(*ki, *ki32, ki_pid);
1139 CP(*ki, *ki32, ki_ppid);
1140 CP(*ki, *ki32, ki_pgid);
1141 CP(*ki, *ki32, ki_tpgid);
1142 CP(*ki, *ki32, ki_sid);
1143 CP(*ki, *ki32, ki_tsid);
1144 CP(*ki, *ki32, ki_jobc);
1145 CP(*ki, *ki32, ki_tdev);
1146 CP(*ki, *ki32, ki_siglist);
1147 CP(*ki, *ki32, ki_sigmask);
1148 CP(*ki, *ki32, ki_sigignore);
1149 CP(*ki, *ki32, ki_sigcatch);
1150 CP(*ki, *ki32, ki_uid);
1151 CP(*ki, *ki32, ki_ruid);
1152 CP(*ki, *ki32, ki_svuid);
1153 CP(*ki, *ki32, ki_rgid);
1154 CP(*ki, *ki32, ki_svgid);
1155 CP(*ki, *ki32, ki_ngroups);
1156 for (i = 0; i < KI_NGROUPS; i++)
1157 CP(*ki, *ki32, ki_groups[i]);
1158 CP(*ki, *ki32, ki_size);
1159 CP(*ki, *ki32, ki_rssize);
1160 CP(*ki, *ki32, ki_swrss);
1161 CP(*ki, *ki32, ki_tsize);
1162 CP(*ki, *ki32, ki_dsize);
1163 CP(*ki, *ki32, ki_ssize);
1164 CP(*ki, *ki32, ki_xstat);
1165 CP(*ki, *ki32, ki_acflag);
1166 CP(*ki, *ki32, ki_pctcpu);
1167 CP(*ki, *ki32, ki_estcpu);
1168 CP(*ki, *ki32, ki_slptime);
1169 CP(*ki, *ki32, ki_swtime);
1170 CP(*ki, *ki32, ki_cow);
1171 CP(*ki, *ki32, ki_runtime);
1172 TV_CP(*ki, *ki32, ki_start);
1173 TV_CP(*ki, *ki32, ki_childtime);
1174 CP(*ki, *ki32, ki_flag);
1175 CP(*ki, *ki32, ki_kiflag);
1176 CP(*ki, *ki32, ki_traceflag);
1177 CP(*ki, *ki32, ki_stat);
1178 CP(*ki, *ki32, ki_nice);
1179 CP(*ki, *ki32, ki_lock);
1180 CP(*ki, *ki32, ki_rqindex);
1181 CP(*ki, *ki32, ki_oncpu);
1182 CP(*ki, *ki32, ki_lastcpu);
1183 bcopy(ki->ki_tdname, ki32->ki_tdname, TDNAMLEN + 1);
1184 bcopy(ki->ki_wmesg, ki32->ki_wmesg, WMESGLEN + 1);
1185 bcopy(ki->ki_login, ki32->ki_login, LOGNAMELEN + 1);
1186 bcopy(ki->ki_lockname, ki32->ki_lockname, LOCKNAMELEN + 1);
1187 bcopy(ki->ki_comm, ki32->ki_comm, COMMLEN + 1);
1188 bcopy(ki->ki_emul, ki32->ki_emul, KI_EMULNAMELEN + 1);
1189 bcopy(ki->ki_loginclass, ki32->ki_loginclass, LOGINCLASSLEN + 1);
1190 bcopy(ki->ki_moretdname, ki32->ki_moretdname, MAXCOMLEN - TDNAMLEN + 1);
1191 CP(*ki, *ki32, ki_flag2);
1192 CP(*ki, *ki32, ki_fibnum);
1193 CP(*ki, *ki32, ki_cr_flags);
1194 CP(*ki, *ki32, ki_jid);
1195 CP(*ki, *ki32, ki_numthreads);
1196 CP(*ki, *ki32, ki_tid);
1197 CP(*ki, *ki32, ki_pri);
1198 freebsd32_rusage_out(&ki->ki_rusage, &ki32->ki_rusage);
1199 freebsd32_rusage_out(&ki->ki_rusage_ch, &ki32->ki_rusage_ch);
1200 PTRTRIM_CP(*ki, *ki32, ki_pcb);
1201 PTRTRIM_CP(*ki, *ki32, ki_kstack);
1202 PTRTRIM_CP(*ki, *ki32, ki_udata);
1203 CP(*ki, *ki32, ki_sflag);
1204 CP(*ki, *ki32, ki_tdflags);
1209 kern_proc_out(struct proc *p, struct sbuf *sb, int flags)
1212 struct kinfo_proc ki;
1213 #ifdef COMPAT_FREEBSD32
1214 struct kinfo_proc32 ki32;
1218 PROC_LOCK_ASSERT(p, MA_OWNED);
1219 MPASS(FIRST_THREAD_IN_PROC(p) != NULL);
1222 fill_kinfo_proc(p, &ki);
1223 if ((flags & KERN_PROC_NOTHREADS) != 0) {
1224 #ifdef COMPAT_FREEBSD32
1225 if ((flags & KERN_PROC_MASK32) != 0) {
1226 freebsd32_kinfo_proc_out(&ki, &ki32);
1227 if (sbuf_bcat(sb, &ki32, sizeof(ki32)) != 0)
1231 if (sbuf_bcat(sb, &ki, sizeof(ki)) != 0)
1234 FOREACH_THREAD_IN_PROC(p, td) {
1235 fill_kinfo_thread(td, &ki, 1);
1236 #ifdef COMPAT_FREEBSD32
1237 if ((flags & KERN_PROC_MASK32) != 0) {
1238 freebsd32_kinfo_proc_out(&ki, &ki32);
1239 if (sbuf_bcat(sb, &ki32, sizeof(ki32)) != 0)
1243 if (sbuf_bcat(sb, &ki, sizeof(ki)) != 0)
1254 sysctl_out_proc(struct proc *p, struct sysctl_req *req, int flags,
1258 struct kinfo_proc ki;
1264 sbuf_new_for_sysctl(&sb, (char *)&ki, sizeof(ki), req);
1265 error = kern_proc_out(p, &sb, flags);
1266 error2 = sbuf_finish(&sb);
1270 else if (error2 != 0)
1290 sysctl_kern_proc(SYSCTL_HANDLER_ARGS)
1292 int *name = (int *)arg1;
1293 u_int namelen = arg2;
1295 int flags, doingzomb, oid_number;
1298 oid_number = oidp->oid_number;
1299 if (oid_number != KERN_PROC_ALL &&
1300 (oid_number & KERN_PROC_INC_THREAD) == 0)
1301 flags = KERN_PROC_NOTHREADS;
1304 oid_number &= ~KERN_PROC_INC_THREAD;
1306 #ifdef COMPAT_FREEBSD32
1307 if (req->flags & SCTL_MASK32)
1308 flags |= KERN_PROC_MASK32;
1310 if (oid_number == KERN_PROC_PID) {
1313 error = sysctl_wire_old_buffer(req, 0);
1316 error = pget((pid_t)name[0], PGET_CANSEE, &p);
1319 error = sysctl_out_proc(p, req, flags, 0);
1323 switch (oid_number) {
1328 case KERN_PROC_PROC:
1329 if (namelen != 0 && namelen != 1)
1339 /* overestimate by 5 procs */
1340 error = SYSCTL_OUT(req, 0, sizeof (struct kinfo_proc) * 5);
1344 error = sysctl_wire_old_buffer(req, 0);
1347 sx_slock(&allproc_lock);
1348 for (doingzomb=0 ; doingzomb < 2 ; doingzomb++) {
1350 p = LIST_FIRST(&allproc);
1352 p = LIST_FIRST(&zombproc);
1353 for (; p != 0; p = LIST_NEXT(p, p_list)) {
1355 * Skip embryonic processes.
1358 if (p->p_state == PRS_NEW) {
1362 KASSERT(p->p_ucred != NULL,
1363 ("process credential is NULL for non-NEW proc"));
1365 * Show a user only appropriate processes.
1367 if (p_cansee(curthread, p)) {
1372 * TODO - make more efficient (see notes below).
1375 switch (oid_number) {
1378 if (p->p_ucred->cr_gid != (gid_t)name[0]) {
1384 case KERN_PROC_PGRP:
1385 /* could do this by traversing pgrp */
1386 if (p->p_pgrp == NULL ||
1387 p->p_pgrp->pg_id != (pid_t)name[0]) {
1393 case KERN_PROC_RGID:
1394 if (p->p_ucred->cr_rgid != (gid_t)name[0]) {
1400 case KERN_PROC_SESSION:
1401 if (p->p_session == NULL ||
1402 p->p_session->s_sid != (pid_t)name[0]) {
1409 if ((p->p_flag & P_CONTROLT) == 0 ||
1410 p->p_session == NULL) {
1414 /* XXX proctree_lock */
1415 SESS_LOCK(p->p_session);
1416 if (p->p_session->s_ttyp == NULL ||
1417 tty_udev(p->p_session->s_ttyp) !=
1419 SESS_UNLOCK(p->p_session);
1423 SESS_UNLOCK(p->p_session);
1427 if (p->p_ucred->cr_uid != (uid_t)name[0]) {
1433 case KERN_PROC_RUID:
1434 if (p->p_ucred->cr_ruid != (uid_t)name[0]) {
1440 case KERN_PROC_PROC:
1448 error = sysctl_out_proc(p, req, flags, doingzomb);
1450 sx_sunlock(&allproc_lock);
1455 sx_sunlock(&allproc_lock);
1460 pargs_alloc(int len)
1464 pa = malloc(sizeof(struct pargs) + len, M_PARGS,
1466 refcount_init(&pa->ar_ref, 1);
1467 pa->ar_length = len;
1472 pargs_free(struct pargs *pa)
1479 pargs_hold(struct pargs *pa)
1484 refcount_acquire(&pa->ar_ref);
1488 pargs_drop(struct pargs *pa)
1493 if (refcount_release(&pa->ar_ref))
1498 proc_read_mem(struct thread *td, struct proc *p, vm_offset_t offset, void* buf,
1504 iov.iov_base = (caddr_t)buf;
1508 uio.uio_offset = offset;
1509 uio.uio_resid = (ssize_t)len;
1510 uio.uio_segflg = UIO_SYSSPACE;
1511 uio.uio_rw = UIO_READ;
1514 return (proc_rwmem(p, &uio));
1518 proc_read_string(struct thread *td, struct proc *p, const char *sptr, char *buf,
1524 error = proc_read_mem(td, p, (vm_offset_t)sptr, buf, len);
1526 * Reading the chunk may validly return EFAULT if the string is shorter
1527 * than the chunk and is aligned at the end of the page, assuming the
1528 * next page is not mapped. So if EFAULT is returned do a fallback to
1529 * one byte read loop.
1531 if (error == EFAULT) {
1532 for (i = 0; i < len; i++, buf++, sptr++) {
1533 error = proc_read_mem(td, p, (vm_offset_t)sptr, buf, 1);
1544 #define PROC_AUXV_MAX 256 /* Safety limit on auxv size. */
1546 enum proc_vector_type {
1552 #ifdef COMPAT_FREEBSD32
1554 get_proc_vector32(struct thread *td, struct proc *p, char ***proc_vectorp,
1555 size_t *vsizep, enum proc_vector_type type)
1557 struct freebsd32_ps_strings pss;
1559 vm_offset_t vptr, ptr;
1560 uint32_t *proc_vector32;
1565 error = proc_read_mem(td, p, (vm_offset_t)(p->p_sysent->sv_psstrings),
1571 vptr = (vm_offset_t)PTRIN(pss.ps_argvstr);
1572 vsize = pss.ps_nargvstr;
1573 if (vsize > ARG_MAX)
1575 size = vsize * sizeof(int32_t);
1578 vptr = (vm_offset_t)PTRIN(pss.ps_envstr);
1579 vsize = pss.ps_nenvstr;
1580 if (vsize > ARG_MAX)
1582 size = vsize * sizeof(int32_t);
1585 vptr = (vm_offset_t)PTRIN(pss.ps_envstr) +
1586 (pss.ps_nenvstr + 1) * sizeof(int32_t);
1589 for (ptr = vptr, i = 0; i < PROC_AUXV_MAX; i++) {
1590 error = proc_read_mem(td, p, ptr, &aux, sizeof(aux));
1593 if (aux.a_type == AT_NULL)
1597 if (aux.a_type != AT_NULL)
1600 size = vsize * sizeof(aux);
1603 KASSERT(0, ("Wrong proc vector type: %d", type));
1606 proc_vector32 = malloc(size, M_TEMP, M_WAITOK);
1607 error = proc_read_mem(td, p, vptr, proc_vector32, size);
1610 if (type == PROC_AUX) {
1611 *proc_vectorp = (char **)proc_vector32;
1615 proc_vector = malloc(vsize * sizeof(char *), M_TEMP, M_WAITOK);
1616 for (i = 0; i < (int)vsize; i++)
1617 proc_vector[i] = PTRIN(proc_vector32[i]);
1618 *proc_vectorp = proc_vector;
1621 free(proc_vector32, M_TEMP);
1627 get_proc_vector(struct thread *td, struct proc *p, char ***proc_vectorp,
1628 size_t *vsizep, enum proc_vector_type type)
1630 struct ps_strings pss;
1632 vm_offset_t vptr, ptr;
1637 #ifdef COMPAT_FREEBSD32
1638 if (SV_PROC_FLAG(p, SV_ILP32) != 0)
1639 return (get_proc_vector32(td, p, proc_vectorp, vsizep, type));
1641 error = proc_read_mem(td, p, (vm_offset_t)(p->p_sysent->sv_psstrings),
1647 vptr = (vm_offset_t)pss.ps_argvstr;
1648 vsize = pss.ps_nargvstr;
1649 if (vsize > ARG_MAX)
1651 size = vsize * sizeof(char *);
1654 vptr = (vm_offset_t)pss.ps_envstr;
1655 vsize = pss.ps_nenvstr;
1656 if (vsize > ARG_MAX)
1658 size = vsize * sizeof(char *);
1662 * The aux array is just above env array on the stack. Check
1663 * that the address is naturally aligned.
1665 vptr = (vm_offset_t)pss.ps_envstr + (pss.ps_nenvstr + 1)
1667 #if __ELF_WORD_SIZE == 64
1668 if (vptr % sizeof(uint64_t) != 0)
1670 if (vptr % sizeof(uint32_t) != 0)
1674 * We count the array size reading the aux vectors from the
1675 * stack until AT_NULL vector is returned. So (to keep the code
1676 * simple) we read the process stack twice: the first time here
1677 * to find the size and the second time when copying the vectors
1678 * to the allocated proc_vector.
1680 for (ptr = vptr, i = 0; i < PROC_AUXV_MAX; i++) {
1681 error = proc_read_mem(td, p, ptr, &aux, sizeof(aux));
1684 if (aux.a_type == AT_NULL)
1689 * If the PROC_AUXV_MAX entries are iterated over, and we have
1690 * not reached AT_NULL, it is most likely we are reading wrong
1691 * data: either the process doesn't have auxv array or data has
1692 * been modified. Return the error in this case.
1694 if (aux.a_type != AT_NULL)
1697 size = vsize * sizeof(aux);
1700 KASSERT(0, ("Wrong proc vector type: %d", type));
1701 return (EINVAL); /* In case we are built without INVARIANTS. */
1703 proc_vector = malloc(size, M_TEMP, M_WAITOK);
1704 if (proc_vector == NULL)
1706 error = proc_read_mem(td, p, vptr, proc_vector, size);
1708 free(proc_vector, M_TEMP);
1711 *proc_vectorp = proc_vector;
1717 #define GET_PS_STRINGS_CHUNK_SZ 256 /* Chunk size (bytes) for ps_strings operations. */
1720 get_ps_strings(struct thread *td, struct proc *p, struct sbuf *sb,
1721 enum proc_vector_type type)
1723 size_t done, len, nchr, vsize;
1725 char **proc_vector, *sptr;
1726 char pss_string[GET_PS_STRINGS_CHUNK_SZ];
1728 PROC_ASSERT_HELD(p);
1731 * We are not going to read more than 2 * (PATH_MAX + ARG_MAX) bytes.
1733 nchr = 2 * (PATH_MAX + ARG_MAX);
1735 error = get_proc_vector(td, p, &proc_vector, &vsize, type);
1738 for (done = 0, i = 0; i < (int)vsize && done < nchr; i++) {
1740 * The program may have scribbled into its argv array, e.g. to
1741 * remove some arguments. If that has happened, break out
1742 * before trying to read from NULL.
1744 if (proc_vector[i] == NULL)
1746 for (sptr = proc_vector[i]; ; sptr += GET_PS_STRINGS_CHUNK_SZ) {
1747 error = proc_read_string(td, p, sptr, pss_string,
1748 sizeof(pss_string));
1751 len = strnlen(pss_string, GET_PS_STRINGS_CHUNK_SZ);
1752 if (done + len >= nchr)
1753 len = nchr - done - 1;
1754 sbuf_bcat(sb, pss_string, len);
1755 if (len != GET_PS_STRINGS_CHUNK_SZ)
1757 done += GET_PS_STRINGS_CHUNK_SZ;
1759 sbuf_bcat(sb, "", 1);
1763 free(proc_vector, M_TEMP);
1768 proc_getargv(struct thread *td, struct proc *p, struct sbuf *sb)
1771 return (get_ps_strings(curthread, p, sb, PROC_ARG));
1775 proc_getenvv(struct thread *td, struct proc *p, struct sbuf *sb)
1778 return (get_ps_strings(curthread, p, sb, PROC_ENV));
1782 proc_getauxv(struct thread *td, struct proc *p, struct sbuf *sb)
1788 error = get_proc_vector(td, p, &auxv, &vsize, PROC_AUX);
1790 #ifdef COMPAT_FREEBSD32
1791 if (SV_PROC_FLAG(p, SV_ILP32) != 0)
1792 size = vsize * sizeof(Elf32_Auxinfo);
1795 size = vsize * sizeof(Elf_Auxinfo);
1796 if (sbuf_bcat(sb, auxv, size) != 0)
1804 * This sysctl allows a process to retrieve the argument list or process
1805 * title for another process without groping around in the address space
1806 * of the other process. It also allow a process to set its own "process
1807 * title to a string of its own choice.
1810 sysctl_kern_proc_args(SYSCTL_HANDLER_ARGS)
1812 int *name = (int *)arg1;
1813 u_int namelen = arg2;
1814 struct pargs *newpa, *pa;
1817 int flags, error = 0, error2;
1822 flags = PGET_CANSEE;
1823 if (req->newptr != NULL)
1824 flags |= PGET_ISCURRENT;
1825 error = pget((pid_t)name[0], flags, &p);
1833 error = SYSCTL_OUT(req, pa->ar_args, pa->ar_length);
1835 } else if ((p->p_flag & (P_WEXIT | P_SYSTEM)) == 0) {
1838 sbuf_new_for_sysctl(&sb, NULL, GET_PS_STRINGS_CHUNK_SZ, req);
1839 error = proc_getargv(curthread, p, &sb);
1840 error2 = sbuf_finish(&sb);
1843 if (error == 0 && error2 != 0)
1848 if (error != 0 || req->newptr == NULL)
1851 if (req->newlen + sizeof(struct pargs) > ps_arg_cache_limit)
1853 newpa = pargs_alloc(req->newlen);
1854 error = SYSCTL_IN(req, newpa->ar_args, req->newlen);
1868 * This sysctl allows a process to retrieve environment of another process.
1871 sysctl_kern_proc_env(SYSCTL_HANDLER_ARGS)
1873 int *name = (int *)arg1;
1874 u_int namelen = arg2;
1882 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
1885 if ((p->p_flag & P_SYSTEM) != 0) {
1890 sbuf_new_for_sysctl(&sb, NULL, GET_PS_STRINGS_CHUNK_SZ, req);
1891 error = proc_getenvv(curthread, p, &sb);
1892 error2 = sbuf_finish(&sb);
1895 return (error != 0 ? error : error2);
1899 * This sysctl allows a process to retrieve ELF auxiliary vector of
1903 sysctl_kern_proc_auxv(SYSCTL_HANDLER_ARGS)
1905 int *name = (int *)arg1;
1906 u_int namelen = arg2;
1914 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
1917 if ((p->p_flag & P_SYSTEM) != 0) {
1921 sbuf_new_for_sysctl(&sb, NULL, GET_PS_STRINGS_CHUNK_SZ, req);
1922 error = proc_getauxv(curthread, p, &sb);
1923 error2 = sbuf_finish(&sb);
1926 return (error != 0 ? error : error2);
1930 * This sysctl allows a process to retrieve the path of the executable for
1931 * itself or another process.
1934 sysctl_kern_proc_pathname(SYSCTL_HANDLER_ARGS)
1936 pid_t *pidp = (pid_t *)arg1;
1937 unsigned int arglen = arg2;
1940 char *retbuf, *freebuf;
1945 if (*pidp == -1) { /* -1 means this process */
1946 p = req->td->td_proc;
1948 error = pget(*pidp, PGET_CANSEE, &p);
1962 error = vn_fullpath(req->td, vp, &retbuf, &freebuf);
1966 error = SYSCTL_OUT(req, retbuf, strlen(retbuf) + 1);
1967 free(freebuf, M_TEMP);
1972 sysctl_kern_proc_sv_name(SYSCTL_HANDLER_ARGS)
1985 error = pget((pid_t)name[0], PGET_CANSEE, &p);
1988 sv_name = p->p_sysent->sv_name;
1990 return (sysctl_handle_string(oidp, sv_name, 0, req));
1993 #ifdef KINFO_OVMENTRY_SIZE
1994 CTASSERT(sizeof(struct kinfo_ovmentry) == KINFO_OVMENTRY_SIZE);
1997 #ifdef COMPAT_FREEBSD7
1999 sysctl_kern_proc_ovmmap(SYSCTL_HANDLER_ARGS)
2001 vm_map_entry_t entry, tmp_entry;
2002 unsigned int last_timestamp;
2003 char *fullpath, *freepath;
2004 struct kinfo_ovmentry *kve;
2014 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
2017 vm = vmspace_acquire_ref(p);
2022 kve = malloc(sizeof(*kve), M_TEMP, M_WAITOK);
2025 vm_map_lock_read(map);
2026 for (entry = map->header.next; entry != &map->header;
2027 entry = entry->next) {
2028 vm_object_t obj, tobj, lobj;
2031 if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
2034 bzero(kve, sizeof(*kve));
2035 kve->kve_structsize = sizeof(*kve);
2037 kve->kve_private_resident = 0;
2038 obj = entry->object.vm_object;
2040 VM_OBJECT_RLOCK(obj);
2041 if (obj->shadow_count == 1)
2042 kve->kve_private_resident =
2043 obj->resident_page_count;
2045 kve->kve_resident = 0;
2046 addr = entry->start;
2047 while (addr < entry->end) {
2048 if (pmap_extract(map->pmap, addr))
2049 kve->kve_resident++;
2053 for (lobj = tobj = obj; tobj; tobj = tobj->backing_object) {
2055 VM_OBJECT_RLOCK(tobj);
2057 VM_OBJECT_RUNLOCK(lobj);
2061 kve->kve_start = (void*)entry->start;
2062 kve->kve_end = (void*)entry->end;
2063 kve->kve_offset = (off_t)entry->offset;
2065 if (entry->protection & VM_PROT_READ)
2066 kve->kve_protection |= KVME_PROT_READ;
2067 if (entry->protection & VM_PROT_WRITE)
2068 kve->kve_protection |= KVME_PROT_WRITE;
2069 if (entry->protection & VM_PROT_EXECUTE)
2070 kve->kve_protection |= KVME_PROT_EXEC;
2072 if (entry->eflags & MAP_ENTRY_COW)
2073 kve->kve_flags |= KVME_FLAG_COW;
2074 if (entry->eflags & MAP_ENTRY_NEEDS_COPY)
2075 kve->kve_flags |= KVME_FLAG_NEEDS_COPY;
2076 if (entry->eflags & MAP_ENTRY_NOCOREDUMP)
2077 kve->kve_flags |= KVME_FLAG_NOCOREDUMP;
2079 last_timestamp = map->timestamp;
2080 vm_map_unlock_read(map);
2082 kve->kve_fileid = 0;
2088 switch (lobj->type) {
2090 kve->kve_type = KVME_TYPE_DEFAULT;
2093 kve->kve_type = KVME_TYPE_VNODE;
2098 if ((lobj->flags & OBJ_TMPFS_NODE) != 0) {
2099 kve->kve_type = KVME_TYPE_VNODE;
2100 if ((lobj->flags & OBJ_TMPFS) != 0) {
2101 vp = lobj->un_pager.swp.swp_tmpfs;
2105 kve->kve_type = KVME_TYPE_SWAP;
2109 kve->kve_type = KVME_TYPE_DEVICE;
2112 kve->kve_type = KVME_TYPE_PHYS;
2115 kve->kve_type = KVME_TYPE_DEAD;
2118 kve->kve_type = KVME_TYPE_SG;
2121 kve->kve_type = KVME_TYPE_UNKNOWN;
2125 VM_OBJECT_RUNLOCK(lobj);
2127 kve->kve_ref_count = obj->ref_count;
2128 kve->kve_shadow_count = obj->shadow_count;
2129 VM_OBJECT_RUNLOCK(obj);
2131 vn_fullpath(curthread, vp, &fullpath,
2133 cred = curthread->td_ucred;
2134 vn_lock(vp, LK_SHARED | LK_RETRY);
2135 if (VOP_GETATTR(vp, &va, cred) == 0) {
2136 kve->kve_fileid = va.va_fileid;
2137 kve->kve_fsid = va.va_fsid;
2142 kve->kve_type = KVME_TYPE_NONE;
2143 kve->kve_ref_count = 0;
2144 kve->kve_shadow_count = 0;
2147 strlcpy(kve->kve_path, fullpath, sizeof(kve->kve_path));
2148 if (freepath != NULL)
2149 free(freepath, M_TEMP);
2151 error = SYSCTL_OUT(req, kve, sizeof(*kve));
2152 vm_map_lock_read(map);
2155 if (last_timestamp != map->timestamp) {
2156 vm_map_lookup_entry(map, addr - 1, &tmp_entry);
2160 vm_map_unlock_read(map);
2166 #endif /* COMPAT_FREEBSD7 */
2168 #ifdef KINFO_VMENTRY_SIZE
2169 CTASSERT(sizeof(struct kinfo_vmentry) == KINFO_VMENTRY_SIZE);
2173 kern_proc_vmmap_resident(vm_map_t map, vm_map_entry_t entry,
2174 struct kinfo_vmentry *kve)
2176 vm_object_t obj, tobj;
2179 vm_paddr_t locked_pa;
2180 vm_pindex_t pi, pi_adv, pindex;
2183 obj = entry->object.vm_object;
2184 addr = entry->start;
2186 pi = OFF_TO_IDX(entry->offset);
2187 for (; addr < entry->end; addr += IDX_TO_OFF(pi_adv), pi += pi_adv) {
2188 if (m_adv != NULL) {
2191 pi_adv = OFF_TO_IDX(entry->end - addr);
2193 for (tobj = obj;; tobj = tobj->backing_object) {
2194 m = vm_page_find_least(tobj, pindex);
2196 if (m->pindex == pindex)
2198 if (pi_adv > m->pindex - pindex) {
2199 pi_adv = m->pindex - pindex;
2203 if (tobj->backing_object == NULL)
2205 pindex += OFF_TO_IDX(tobj->
2206 backing_object_offset);
2210 if (m->psind != 0 && addr + pagesizes[1] <= entry->end &&
2211 (addr & (pagesizes[1] - 1)) == 0 &&
2212 (pmap_mincore(map->pmap, addr, &locked_pa) &
2213 MINCORE_SUPER) != 0) {
2214 kve->kve_flags |= KVME_FLAG_SUPER;
2215 pi_adv = OFF_TO_IDX(pagesizes[1]);
2218 * We do not test the found page on validity.
2219 * Either the page is busy and being paged in,
2220 * or it was invalidated. The first case
2221 * should be counted as resident, the second
2222 * is not so clear; we do account both.
2226 kve->kve_resident += pi_adv;
2229 PA_UNLOCK_COND(locked_pa);
2233 * Must be called with the process locked and will return unlocked.
2236 kern_proc_vmmap_out(struct proc *p, struct sbuf *sb, ssize_t maxlen, int flags)
2238 vm_map_entry_t entry, tmp_entry;
2241 vm_object_t obj, tobj, lobj;
2242 char *fullpath, *freepath;
2243 struct kinfo_vmentry *kve;
2248 unsigned int last_timestamp;
2251 PROC_LOCK_ASSERT(p, MA_OWNED);
2255 vm = vmspace_acquire_ref(p);
2260 kve = malloc(sizeof(*kve), M_TEMP, M_WAITOK | M_ZERO);
2264 vm_map_lock_read(map);
2265 for (entry = map->header.next; entry != &map->header;
2266 entry = entry->next) {
2267 if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
2271 bzero(kve, sizeof(*kve));
2272 obj = entry->object.vm_object;
2274 for (tobj = obj; tobj != NULL;
2275 tobj = tobj->backing_object) {
2276 VM_OBJECT_RLOCK(tobj);
2279 if (obj->backing_object == NULL)
2280 kve->kve_private_resident =
2281 obj->resident_page_count;
2282 if (!vmmap_skip_res_cnt)
2283 kern_proc_vmmap_resident(map, entry, kve);
2284 for (tobj = obj; tobj != NULL;
2285 tobj = tobj->backing_object) {
2286 if (tobj != obj && tobj != lobj)
2287 VM_OBJECT_RUNLOCK(tobj);
2293 kve->kve_start = entry->start;
2294 kve->kve_end = entry->end;
2295 kve->kve_offset = entry->offset;
2297 if (entry->protection & VM_PROT_READ)
2298 kve->kve_protection |= KVME_PROT_READ;
2299 if (entry->protection & VM_PROT_WRITE)
2300 kve->kve_protection |= KVME_PROT_WRITE;
2301 if (entry->protection & VM_PROT_EXECUTE)
2302 kve->kve_protection |= KVME_PROT_EXEC;
2304 if (entry->eflags & MAP_ENTRY_COW)
2305 kve->kve_flags |= KVME_FLAG_COW;
2306 if (entry->eflags & MAP_ENTRY_NEEDS_COPY)
2307 kve->kve_flags |= KVME_FLAG_NEEDS_COPY;
2308 if (entry->eflags & MAP_ENTRY_NOCOREDUMP)
2309 kve->kve_flags |= KVME_FLAG_NOCOREDUMP;
2310 if (entry->eflags & MAP_ENTRY_GROWS_UP)
2311 kve->kve_flags |= KVME_FLAG_GROWS_UP;
2312 if (entry->eflags & MAP_ENTRY_GROWS_DOWN)
2313 kve->kve_flags |= KVME_FLAG_GROWS_DOWN;
2315 last_timestamp = map->timestamp;
2316 vm_map_unlock_read(map);
2322 switch (lobj->type) {
2324 kve->kve_type = KVME_TYPE_DEFAULT;
2327 kve->kve_type = KVME_TYPE_VNODE;
2332 if ((lobj->flags & OBJ_TMPFS_NODE) != 0) {
2333 kve->kve_type = KVME_TYPE_VNODE;
2334 if ((lobj->flags & OBJ_TMPFS) != 0) {
2335 vp = lobj->un_pager.swp.swp_tmpfs;
2339 kve->kve_type = KVME_TYPE_SWAP;
2343 kve->kve_type = KVME_TYPE_DEVICE;
2346 kve->kve_type = KVME_TYPE_PHYS;
2349 kve->kve_type = KVME_TYPE_DEAD;
2352 kve->kve_type = KVME_TYPE_SG;
2354 case OBJT_MGTDEVICE:
2355 kve->kve_type = KVME_TYPE_MGTDEVICE;
2358 kve->kve_type = KVME_TYPE_UNKNOWN;
2362 VM_OBJECT_RUNLOCK(lobj);
2364 kve->kve_ref_count = obj->ref_count;
2365 kve->kve_shadow_count = obj->shadow_count;
2366 VM_OBJECT_RUNLOCK(obj);
2368 vn_fullpath(curthread, vp, &fullpath,
2370 kve->kve_vn_type = vntype_to_kinfo(vp->v_type);
2371 cred = curthread->td_ucred;
2372 vn_lock(vp, LK_SHARED | LK_RETRY);
2373 if (VOP_GETATTR(vp, &va, cred) == 0) {
2374 kve->kve_vn_fileid = va.va_fileid;
2375 kve->kve_vn_fsid = va.va_fsid;
2377 MAKEIMODE(va.va_type, va.va_mode);
2378 kve->kve_vn_size = va.va_size;
2379 kve->kve_vn_rdev = va.va_rdev;
2380 kve->kve_status = KF_ATTR_VALID;
2385 kve->kve_type = KVME_TYPE_NONE;
2386 kve->kve_ref_count = 0;
2387 kve->kve_shadow_count = 0;
2390 strlcpy(kve->kve_path, fullpath, sizeof(kve->kve_path));
2391 if (freepath != NULL)
2392 free(freepath, M_TEMP);
2394 /* Pack record size down */
2395 if ((flags & KERN_VMMAP_PACK_KINFO) != 0)
2396 kve->kve_structsize =
2397 offsetof(struct kinfo_vmentry, kve_path) +
2398 strlen(kve->kve_path) + 1;
2400 kve->kve_structsize = sizeof(*kve);
2401 kve->kve_structsize = roundup(kve->kve_structsize,
2404 /* Halt filling and truncate rather than exceeding maxlen */
2405 if (maxlen != -1 && maxlen < kve->kve_structsize) {
2407 vm_map_lock_read(map);
2409 } else if (maxlen != -1)
2410 maxlen -= kve->kve_structsize;
2412 if (sbuf_bcat(sb, kve, kve->kve_structsize) != 0)
2414 vm_map_lock_read(map);
2417 if (last_timestamp != map->timestamp) {
2418 vm_map_lookup_entry(map, addr - 1, &tmp_entry);
2422 vm_map_unlock_read(map);
2430 sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS)
2434 int error, error2, *name;
2437 sbuf_new_for_sysctl(&sb, NULL, sizeof(struct kinfo_vmentry), req);
2438 error = pget((pid_t)name[0], PGET_CANDEBUG | PGET_NOTWEXIT, &p);
2443 error = kern_proc_vmmap_out(p, &sb, -1, KERN_VMMAP_PACK_KINFO);
2444 error2 = sbuf_finish(&sb);
2446 return (error != 0 ? error : error2);
2449 #if defined(STACK) || defined(DDB)
2451 sysctl_kern_proc_kstack(SYSCTL_HANDLER_ARGS)
2453 struct kinfo_kstack *kkstp;
2454 int error, i, *name, numthreads;
2455 lwpid_t *lwpidarray;
2462 error = pget((pid_t)name[0], PGET_NOTINEXEC | PGET_WANTREAD, &p);
2466 kkstp = malloc(sizeof(*kkstp), M_TEMP, M_WAITOK);
2467 st = stack_create();
2472 if (lwpidarray != NULL) {
2473 free(lwpidarray, M_TEMP);
2476 numthreads = p->p_numthreads;
2478 lwpidarray = malloc(sizeof(*lwpidarray) * numthreads, M_TEMP,
2481 } while (numthreads < p->p_numthreads);
2484 * XXXRW: During the below loop, execve(2) and countless other sorts
2485 * of changes could have taken place. Should we check to see if the
2486 * vmspace has been replaced, or the like, in order to prevent
2487 * giving a snapshot that spans, say, execve(2), with some threads
2488 * before and some after? Among other things, the credentials could
2489 * have changed, in which case the right to extract debug info might
2490 * no longer be assured.
2493 FOREACH_THREAD_IN_PROC(p, td) {
2494 KASSERT(i < numthreads,
2495 ("sysctl_kern_proc_kstack: numthreads"));
2496 lwpidarray[i] = td->td_tid;
2500 for (i = 0; i < numthreads; i++) {
2501 td = thread_find(p, lwpidarray[i]);
2505 bzero(kkstp, sizeof(*kkstp));
2506 (void)sbuf_new(&sb, kkstp->kkst_trace,
2507 sizeof(kkstp->kkst_trace), SBUF_FIXEDLEN);
2509 kkstp->kkst_tid = td->td_tid;
2510 if (TD_IS_SWAPPED(td))
2511 kkstp->kkst_state = KKST_STATE_SWAPPED;
2512 else if (TD_IS_RUNNING(td))
2513 kkstp->kkst_state = KKST_STATE_RUNNING;
2515 kkstp->kkst_state = KKST_STATE_STACKOK;
2516 stack_save_td(st, td);
2520 stack_sbuf_print(&sb, st);
2523 error = SYSCTL_OUT(req, kkstp, sizeof(*kkstp));
2530 if (lwpidarray != NULL)
2531 free(lwpidarray, M_TEMP);
2533 free(kkstp, M_TEMP);
2539 * This sysctl allows a process to retrieve the full list of groups from
2540 * itself or another process.
2543 sysctl_kern_proc_groups(SYSCTL_HANDLER_ARGS)
2545 pid_t *pidp = (pid_t *)arg1;
2546 unsigned int arglen = arg2;
2553 if (*pidp == -1) { /* -1 means this process */
2554 p = req->td->td_proc;
2556 error = pget(*pidp, PGET_CANSEE, &p);
2561 cred = crhold(p->p_ucred);
2565 error = SYSCTL_OUT(req, cred->cr_groups,
2566 cred->cr_ngroups * sizeof(gid_t));
2572 * This sysctl allows a process to retrieve or/and set the resource limit for
2576 sysctl_kern_proc_rlimit(SYSCTL_HANDLER_ARGS)
2578 int *name = (int *)arg1;
2579 u_int namelen = arg2;
2588 which = (u_int)name[1];
2589 if (which >= RLIM_NLIMITS)
2592 if (req->newptr != NULL && req->newlen != sizeof(rlim))
2595 flags = PGET_HOLD | PGET_NOTWEXIT;
2596 if (req->newptr != NULL)
2597 flags |= PGET_CANDEBUG;
2599 flags |= PGET_CANSEE;
2600 error = pget((pid_t)name[0], flags, &p);
2607 if (req->oldptr != NULL) {
2609 lim_rlimit(p, which, &rlim);
2612 error = SYSCTL_OUT(req, &rlim, sizeof(rlim));
2619 if (req->newptr != NULL) {
2620 error = SYSCTL_IN(req, &rlim, sizeof(rlim));
2622 error = kern_proc_setrlimit(curthread, p, which, &rlim);
2631 * This sysctl allows a process to retrieve ps_strings structure location of
2635 sysctl_kern_proc_ps_strings(SYSCTL_HANDLER_ARGS)
2637 int *name = (int *)arg1;
2638 u_int namelen = arg2;
2640 vm_offset_t ps_strings;
2642 #ifdef COMPAT_FREEBSD32
2643 uint32_t ps_strings32;
2649 error = pget((pid_t)name[0], PGET_CANDEBUG, &p);
2652 #ifdef COMPAT_FREEBSD32
2653 if ((req->flags & SCTL_MASK32) != 0) {
2655 * We return 0 if the 32 bit emulation request is for a 64 bit
2658 ps_strings32 = SV_PROC_FLAG(p, SV_ILP32) != 0 ?
2659 PTROUT(p->p_sysent->sv_psstrings) : 0;
2661 error = SYSCTL_OUT(req, &ps_strings32, sizeof(ps_strings32));
2665 ps_strings = p->p_sysent->sv_psstrings;
2667 error = SYSCTL_OUT(req, &ps_strings, sizeof(ps_strings));
2672 * This sysctl allows a process to retrieve umask of another process.
2675 sysctl_kern_proc_umask(SYSCTL_HANDLER_ARGS)
2677 int *name = (int *)arg1;
2678 u_int namelen = arg2;
2686 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
2690 FILEDESC_SLOCK(p->p_fd);
2691 fd_cmask = p->p_fd->fd_cmask;
2692 FILEDESC_SUNLOCK(p->p_fd);
2694 error = SYSCTL_OUT(req, &fd_cmask, sizeof(fd_cmask));
2699 * This sysctl allows a process to set and retrieve binary osreldate of
2703 sysctl_kern_proc_osrel(SYSCTL_HANDLER_ARGS)
2705 int *name = (int *)arg1;
2706 u_int namelen = arg2;
2708 int flags, error, osrel;
2713 if (req->newptr != NULL && req->newlen != sizeof(osrel))
2716 flags = PGET_HOLD | PGET_NOTWEXIT;
2717 if (req->newptr != NULL)
2718 flags |= PGET_CANDEBUG;
2720 flags |= PGET_CANSEE;
2721 error = pget((pid_t)name[0], flags, &p);
2725 error = SYSCTL_OUT(req, &p->p_osrel, sizeof(p->p_osrel));
2729 if (req->newptr != NULL) {
2730 error = SYSCTL_IN(req, &osrel, sizeof(osrel));
2745 sysctl_kern_proc_sigtramp(SYSCTL_HANDLER_ARGS)
2747 int *name = (int *)arg1;
2748 u_int namelen = arg2;
2750 struct kinfo_sigtramp kst;
2751 const struct sysentvec *sv;
2753 #ifdef COMPAT_FREEBSD32
2754 struct kinfo_sigtramp32 kst32;
2760 error = pget((pid_t)name[0], PGET_CANDEBUG, &p);
2764 #ifdef COMPAT_FREEBSD32
2765 if ((req->flags & SCTL_MASK32) != 0) {
2766 bzero(&kst32, sizeof(kst32));
2767 if (SV_PROC_FLAG(p, SV_ILP32)) {
2768 if (sv->sv_sigcode_base != 0) {
2769 kst32.ksigtramp_start = sv->sv_sigcode_base;
2770 kst32.ksigtramp_end = sv->sv_sigcode_base +
2773 kst32.ksigtramp_start = sv->sv_psstrings -
2775 kst32.ksigtramp_end = sv->sv_psstrings;
2779 error = SYSCTL_OUT(req, &kst32, sizeof(kst32));
2783 bzero(&kst, sizeof(kst));
2784 if (sv->sv_sigcode_base != 0) {
2785 kst.ksigtramp_start = (char *)sv->sv_sigcode_base;
2786 kst.ksigtramp_end = (char *)sv->sv_sigcode_base +
2789 kst.ksigtramp_start = (char *)sv->sv_psstrings -
2791 kst.ksigtramp_end = (char *)sv->sv_psstrings;
2794 error = SYSCTL_OUT(req, &kst, sizeof(kst));
2798 SYSCTL_NODE(_kern, KERN_PROC, proc, CTLFLAG_RD, 0, "Process table");
2800 SYSCTL_PROC(_kern_proc, KERN_PROC_ALL, all, CTLFLAG_RD|CTLTYPE_STRUCT|
2801 CTLFLAG_MPSAFE, 0, 0, sysctl_kern_proc, "S,proc",
2802 "Return entire process table");
2804 static SYSCTL_NODE(_kern_proc, KERN_PROC_GID, gid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2805 sysctl_kern_proc, "Process table");
2807 static SYSCTL_NODE(_kern_proc, KERN_PROC_PGRP, pgrp, CTLFLAG_RD | CTLFLAG_MPSAFE,
2808 sysctl_kern_proc, "Process table");
2810 static SYSCTL_NODE(_kern_proc, KERN_PROC_RGID, rgid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2811 sysctl_kern_proc, "Process table");
2813 static SYSCTL_NODE(_kern_proc, KERN_PROC_SESSION, sid, CTLFLAG_RD |
2814 CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2816 static SYSCTL_NODE(_kern_proc, KERN_PROC_TTY, tty, CTLFLAG_RD | CTLFLAG_MPSAFE,
2817 sysctl_kern_proc, "Process table");
2819 static SYSCTL_NODE(_kern_proc, KERN_PROC_UID, uid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2820 sysctl_kern_proc, "Process table");
2822 static SYSCTL_NODE(_kern_proc, KERN_PROC_RUID, ruid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2823 sysctl_kern_proc, "Process table");
2825 static SYSCTL_NODE(_kern_proc, KERN_PROC_PID, pid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2826 sysctl_kern_proc, "Process table");
2828 static SYSCTL_NODE(_kern_proc, KERN_PROC_PROC, proc, CTLFLAG_RD | CTLFLAG_MPSAFE,
2829 sysctl_kern_proc, "Return process table, no threads");
2831 static SYSCTL_NODE(_kern_proc, KERN_PROC_ARGS, args,
2832 CTLFLAG_RW | CTLFLAG_CAPWR | CTLFLAG_ANYBODY | CTLFLAG_MPSAFE,
2833 sysctl_kern_proc_args, "Process argument list");
2835 static SYSCTL_NODE(_kern_proc, KERN_PROC_ENV, env, CTLFLAG_RD | CTLFLAG_MPSAFE,
2836 sysctl_kern_proc_env, "Process environment");
2838 static SYSCTL_NODE(_kern_proc, KERN_PROC_AUXV, auxv, CTLFLAG_RD |
2839 CTLFLAG_MPSAFE, sysctl_kern_proc_auxv, "Process ELF auxiliary vector");
2841 static SYSCTL_NODE(_kern_proc, KERN_PROC_PATHNAME, pathname, CTLFLAG_RD |
2842 CTLFLAG_MPSAFE, sysctl_kern_proc_pathname, "Process executable path");
2844 static SYSCTL_NODE(_kern_proc, KERN_PROC_SV_NAME, sv_name, CTLFLAG_RD |
2845 CTLFLAG_MPSAFE, sysctl_kern_proc_sv_name,
2846 "Process syscall vector name (ABI type)");
2848 static SYSCTL_NODE(_kern_proc, (KERN_PROC_GID | KERN_PROC_INC_THREAD), gid_td,
2849 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2851 static SYSCTL_NODE(_kern_proc, (KERN_PROC_PGRP | KERN_PROC_INC_THREAD), pgrp_td,
2852 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2854 static SYSCTL_NODE(_kern_proc, (KERN_PROC_RGID | KERN_PROC_INC_THREAD), rgid_td,
2855 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2857 static SYSCTL_NODE(_kern_proc, (KERN_PROC_SESSION | KERN_PROC_INC_THREAD),
2858 sid_td, CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2860 static SYSCTL_NODE(_kern_proc, (KERN_PROC_TTY | KERN_PROC_INC_THREAD), tty_td,
2861 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2863 static SYSCTL_NODE(_kern_proc, (KERN_PROC_UID | KERN_PROC_INC_THREAD), uid_td,
2864 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2866 static SYSCTL_NODE(_kern_proc, (KERN_PROC_RUID | KERN_PROC_INC_THREAD), ruid_td,
2867 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2869 static SYSCTL_NODE(_kern_proc, (KERN_PROC_PID | KERN_PROC_INC_THREAD), pid_td,
2870 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2872 static SYSCTL_NODE(_kern_proc, (KERN_PROC_PROC | KERN_PROC_INC_THREAD), proc_td,
2873 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc,
2874 "Return process table, no threads");
2876 #ifdef COMPAT_FREEBSD7
2877 static SYSCTL_NODE(_kern_proc, KERN_PROC_OVMMAP, ovmmap, CTLFLAG_RD |
2878 CTLFLAG_MPSAFE, sysctl_kern_proc_ovmmap, "Old Process vm map entries");
2881 static SYSCTL_NODE(_kern_proc, KERN_PROC_VMMAP, vmmap, CTLFLAG_RD |
2882 CTLFLAG_MPSAFE, sysctl_kern_proc_vmmap, "Process vm map entries");
2884 #if defined(STACK) || defined(DDB)
2885 static SYSCTL_NODE(_kern_proc, KERN_PROC_KSTACK, kstack, CTLFLAG_RD |
2886 CTLFLAG_MPSAFE, sysctl_kern_proc_kstack, "Process kernel stacks");
2889 static SYSCTL_NODE(_kern_proc, KERN_PROC_GROUPS, groups, CTLFLAG_RD |
2890 CTLFLAG_MPSAFE, sysctl_kern_proc_groups, "Process groups");
2892 static SYSCTL_NODE(_kern_proc, KERN_PROC_RLIMIT, rlimit, CTLFLAG_RW |
2893 CTLFLAG_ANYBODY | CTLFLAG_MPSAFE, sysctl_kern_proc_rlimit,
2894 "Process resource limits");
2896 static SYSCTL_NODE(_kern_proc, KERN_PROC_PS_STRINGS, ps_strings, CTLFLAG_RD |
2897 CTLFLAG_MPSAFE, sysctl_kern_proc_ps_strings,
2898 "Process ps_strings location");
2900 static SYSCTL_NODE(_kern_proc, KERN_PROC_UMASK, umask, CTLFLAG_RD |
2901 CTLFLAG_MPSAFE, sysctl_kern_proc_umask, "Process umask");
2903 static SYSCTL_NODE(_kern_proc, KERN_PROC_OSREL, osrel, CTLFLAG_RW |
2904 CTLFLAG_ANYBODY | CTLFLAG_MPSAFE, sysctl_kern_proc_osrel,
2905 "Process binary osreldate");
2907 static SYSCTL_NODE(_kern_proc, KERN_PROC_SIGTRAMP, sigtramp, CTLFLAG_RD |
2908 CTLFLAG_MPSAFE, sysctl_kern_proc_sigtramp,
2909 "Process signal trampoline location");
2914 * stop_all_proc() purpose is to stop all process which have usermode,
2915 * except current process for obvious reasons. This makes it somewhat
2916 * unreliable when invoked from multithreaded process. The service
2917 * must not be user-callable anyway.
2922 struct proc *cp, *p;
2924 bool restart, seen_stopped, seen_exiting, stopped_some;
2928 sx_xlock(&allproc_lock);
2930 seen_exiting = seen_stopped = stopped_some = restart = false;
2931 LIST_REMOVE(cp, p_list);
2932 LIST_INSERT_HEAD(&allproc, cp, p_list);
2934 p = LIST_NEXT(cp, p_list);
2937 LIST_REMOVE(cp, p_list);
2938 LIST_INSERT_AFTER(p, cp, p_list);
2940 if ((p->p_flag & (P_KTHREAD | P_SYSTEM |
2941 P_TOTAL_STOP)) != 0) {
2945 if ((p->p_flag & P_WEXIT) != 0) {
2946 seen_exiting = true;
2950 if (P_SHOULDSTOP(p) == P_STOPPED_SINGLE) {
2952 * Stopped processes are tolerated when there
2953 * are no other processes which might continue
2954 * them. P_STOPPED_SINGLE but not
2955 * P_TOTAL_STOP process still has at least one
2958 seen_stopped = true;
2963 sx_xunlock(&allproc_lock);
2964 r = thread_single(p, SINGLE_ALLPROC);
2968 stopped_some = true;
2971 sx_xlock(&allproc_lock);
2973 /* Catch forked children we did not see in iteration. */
2974 if (gen != allproc_gen)
2976 sx_xunlock(&allproc_lock);
2977 if (restart || stopped_some || seen_exiting || seen_stopped) {
2978 kern_yield(PRI_USER);
2984 resume_all_proc(void)
2986 struct proc *cp, *p;
2989 sx_xlock(&allproc_lock);
2990 LIST_REMOVE(cp, p_list);
2991 LIST_INSERT_HEAD(&allproc, cp, p_list);
2993 p = LIST_NEXT(cp, p_list);
2996 LIST_REMOVE(cp, p_list);
2997 LIST_INSERT_AFTER(p, cp, p_list);
2999 if ((p->p_flag & P_TOTAL_STOP) != 0) {
3000 sx_xunlock(&allproc_lock);
3002 thread_single_end(p, SINGLE_ALLPROC);
3005 sx_xlock(&allproc_lock);
3010 sx_xunlock(&allproc_lock);
3013 /* #define TOTAL_STOP_DEBUG 1 */
3014 #ifdef TOTAL_STOP_DEBUG
3015 volatile static int ap_resume;
3016 #include <sys/mount.h>
3019 sysctl_debug_stop_all_proc(SYSCTL_HANDLER_ARGS)
3025 error = sysctl_handle_int(oidp, &val, 0, req);
3026 if (error != 0 || req->newptr == NULL)
3031 while (ap_resume == 0)
3039 SYSCTL_PROC(_debug, OID_AUTO, stop_all_proc, CTLTYPE_INT | CTLFLAG_RW |
3040 CTLFLAG_MPSAFE, __DEVOLATILE(int *, &ap_resume), 0,
3041 sysctl_debug_stop_all_proc, "I",