FreeBSD/Linux Kernel Cross Reference
sys/kern/kern_proc.c
1 /*-
2 * Copyright (c) 1982, 1986, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)kern_proc.c 8.7 (Berkeley) 2/14/95
30 */
31
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD: releng/9.1/sys/kern/kern_proc.c 238647 2012-07-20 06:50:57Z pgj $");
34
35 #include "opt_compat.h"
36 #include "opt_ddb.h"
37 #include "opt_kdtrace.h"
38 #include "opt_ktrace.h"
39 #include "opt_kstack_pages.h"
40 #include "opt_stack.h"
41
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/elf.h>
45 #include <sys/exec.h>
46 #include <sys/kernel.h>
47 #include <sys/limits.h>
48 #include <sys/lock.h>
49 #include <sys/loginclass.h>
50 #include <sys/malloc.h>
51 #include <sys/mman.h>
52 #include <sys/mount.h>
53 #include <sys/mutex.h>
54 #include <sys/proc.h>
55 #include <sys/ptrace.h>
56 #include <sys/refcount.h>
57 #include <sys/resourcevar.h>
58 #include <sys/sbuf.h>
59 #include <sys/sysent.h>
60 #include <sys/sched.h>
61 #include <sys/smp.h>
62 #include <sys/stack.h>
63 #include <sys/stat.h>
64 #include <sys/sysctl.h>
65 #include <sys/filedesc.h>
66 #include <sys/tty.h>
67 #include <sys/signalvar.h>
68 #include <sys/sdt.h>
69 #include <sys/sx.h>
70 #include <sys/user.h>
71 #include <sys/jail.h>
72 #include <sys/vnode.h>
73 #include <sys/eventhandler.h>
74
75 #ifdef DDB
76 #include <ddb/ddb.h>
77 #endif
78
79 #include <vm/vm.h>
80 #include <vm/vm_extern.h>
81 #include <vm/pmap.h>
82 #include <vm/vm_map.h>
83 #include <vm/vm_object.h>
84 #include <vm/vm_page.h>
85 #include <vm/uma.h>
86
87 #ifdef COMPAT_FREEBSD32
88 #include <compat/freebsd32/freebsd32.h>
89 #include <compat/freebsd32/freebsd32_util.h>
90 #endif
91
92 SDT_PROVIDER_DEFINE(proc);
93 SDT_PROBE_DEFINE(proc, kernel, ctor, entry, entry);
94 SDT_PROBE_ARGTYPE(proc, kernel, ctor, entry, 0, "struct proc *");
95 SDT_PROBE_ARGTYPE(proc, kernel, ctor, entry, 1, "int");
96 SDT_PROBE_ARGTYPE(proc, kernel, ctor, entry, 2, "void *");
97 SDT_PROBE_ARGTYPE(proc, kernel, ctor, entry, 3, "int");
98 SDT_PROBE_DEFINE(proc, kernel, ctor, return, return);
99 SDT_PROBE_ARGTYPE(proc, kernel, ctor, return, 0, "struct proc *");
100 SDT_PROBE_ARGTYPE(proc, kernel, ctor, return, 1, "int");
101 SDT_PROBE_ARGTYPE(proc, kernel, ctor, return, 2, "void *");
102 SDT_PROBE_ARGTYPE(proc, kernel, ctor, return, 3, "int");
103 SDT_PROBE_DEFINE(proc, kernel, dtor, entry, entry);
104 SDT_PROBE_ARGTYPE(proc, kernel, dtor, entry, 0, "struct proc *");
105 SDT_PROBE_ARGTYPE(proc, kernel, dtor, entry, 1, "int");
106 SDT_PROBE_ARGTYPE(proc, kernel, dtor, entry, 2, "void *");
107 SDT_PROBE_ARGTYPE(proc, kernel, dtor, entry, 3, "struct thread *");
108 SDT_PROBE_DEFINE(proc, kernel, dtor, return, return);
109 SDT_PROBE_ARGTYPE(proc, kernel, dtor, return, 0, "struct proc *");
110 SDT_PROBE_ARGTYPE(proc, kernel, dtor, return, 1, "int");
111 SDT_PROBE_ARGTYPE(proc, kernel, dtor, return, 2, "void *");
112 SDT_PROBE_DEFINE(proc, kernel, init, entry, entry);
113 SDT_PROBE_ARGTYPE(proc, kernel, init, entry, 0, "struct proc *");
114 SDT_PROBE_ARGTYPE(proc, kernel, init, entry, 1, "int");
115 SDT_PROBE_ARGTYPE(proc, kernel, init, entry, 2, "int");
116 SDT_PROBE_DEFINE(proc, kernel, init, return, return);
117 SDT_PROBE_ARGTYPE(proc, kernel, init, return, 0, "struct proc *");
118 SDT_PROBE_ARGTYPE(proc, kernel, init, return, 1, "int");
119 SDT_PROBE_ARGTYPE(proc, kernel, init, return, 2, "int");
120
121 MALLOC_DEFINE(M_PGRP, "pgrp", "process group header");
122 MALLOC_DEFINE(M_SESSION, "session", "session header");
123 static MALLOC_DEFINE(M_PROC, "proc", "Proc structures");
124 MALLOC_DEFINE(M_SUBPROC, "subproc", "Proc sub-structures");
125
126 static void doenterpgrp(struct proc *, struct pgrp *);
127 static void orphanpg(struct pgrp *pg);
128 static void fill_kinfo_aggregate(struct proc *p, struct kinfo_proc *kp);
129 static void fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp);
130 static void fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp,
131 int preferthread);
132 static void pgadjustjobc(struct pgrp *pgrp, int entering);
133 static void pgdelete(struct pgrp *);
134 static int proc_ctor(void *mem, int size, void *arg, int flags);
135 static void proc_dtor(void *mem, int size, void *arg);
136 static int proc_init(void *mem, int size, int flags);
137 static void proc_fini(void *mem, int size);
138 static void pargs_free(struct pargs *pa);
139
140 /*
141 * Other process lists
142 */
143 struct pidhashhead *pidhashtbl;
144 u_long pidhash;
145 struct pgrphashhead *pgrphashtbl;
146 u_long pgrphash;
147 struct proclist allproc;
148 struct proclist zombproc;
149 struct sx allproc_lock;
150 struct sx proctree_lock;
151 struct mtx ppeers_lock;
152 uma_zone_t proc_zone;
153
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
158 CTASSERT(sizeof(struct kinfo_proc) == KINFO_PROC_SIZE);
159 #ifdef COMPAT_FREEBSD32
160 CTASSERT(sizeof(struct kinfo_proc32) == KINFO_PROC32_SIZE);
161 #endif
162
163 /*
164 * Initialize global process hashing structures.
165 */
166 void
167 procinit()
168 {
169
170 sx_init(&allproc_lock, "allproc");
171 sx_init(&proctree_lock, "proctree");
172 mtx_init(&ppeers_lock, "p_peers", NULL, MTX_DEF);
173 LIST_INIT(&allproc);
174 LIST_INIT(&zombproc);
175 pidhashtbl = hashinit(maxproc / 4, M_PROC, &pidhash);
176 pgrphashtbl = hashinit(maxproc / 4, M_PROC, &pgrphash);
177 proc_zone = uma_zcreate("PROC", sched_sizeof_proc(),
178 proc_ctor, proc_dtor, proc_init, proc_fini,
179 UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
180 uihashinit();
181 }
182
183 /*
184 * Prepare a proc for use.
185 */
186 static int
187 proc_ctor(void *mem, int size, void *arg, int flags)
188 {
189 struct proc *p;
190
191 p = (struct proc *)mem;
192 SDT_PROBE(proc, kernel, ctor , entry, p, size, arg, flags, 0);
193 EVENTHANDLER_INVOKE(process_ctor, p);
194 SDT_PROBE(proc, kernel, ctor , return, p, size, arg, flags, 0);
195 return (0);
196 }
197
198 /*
199 * Reclaim a proc after use.
200 */
201 static void
202 proc_dtor(void *mem, int size, void *arg)
203 {
204 struct proc *p;
205 struct thread *td;
206
207 /* INVARIANTS checks go here */
208 p = (struct proc *)mem;
209 td = FIRST_THREAD_IN_PROC(p);
210 SDT_PROBE(proc, kernel, dtor, entry, p, size, arg, td, 0);
211 if (td != NULL) {
212 #ifdef INVARIANTS
213 KASSERT((p->p_numthreads == 1),
214 ("bad number of threads in exiting process"));
215 KASSERT(STAILQ_EMPTY(&p->p_ktr), ("proc_dtor: non-empty p_ktr"));
216 #endif
217 /* Free all OSD associated to this thread. */
218 osd_thread_exit(td);
219 }
220 EVENTHANDLER_INVOKE(process_dtor, p);
221 if (p->p_ksi != NULL)
222 KASSERT(! KSI_ONQ(p->p_ksi), ("SIGCHLD queue"));
223 SDT_PROBE(proc, kernel, dtor, return, p, size, arg, 0, 0);
224 }
225
226 /*
227 * Initialize type-stable parts of a proc (when newly created).
228 */
229 static int
230 proc_init(void *mem, int size, int flags)
231 {
232 struct proc *p;
233
234 p = (struct proc *)mem;
235 SDT_PROBE(proc, kernel, init, entry, p, size, flags, 0, 0);
236 p->p_sched = (struct p_sched *)&p[1];
237 bzero(&p->p_mtx, sizeof(struct mtx));
238 mtx_init(&p->p_mtx, "process lock", NULL, MTX_DEF | MTX_DUPOK);
239 mtx_init(&p->p_slock, "process slock", NULL, MTX_SPIN | MTX_RECURSE);
240 cv_init(&p->p_pwait, "ppwait");
241 cv_init(&p->p_dbgwait, "dbgwait");
242 TAILQ_INIT(&p->p_threads); /* all threads in proc */
243 EVENTHANDLER_INVOKE(process_init, p);
244 p->p_stats = pstats_alloc();
245 SDT_PROBE(proc, kernel, init, return, p, size, flags, 0, 0);
246 return (0);
247 }
248
249 /*
250 * UMA should ensure that this function is never called.
251 * Freeing a proc structure would violate type stability.
252 */
253 static void
254 proc_fini(void *mem, int size)
255 {
256 #ifdef notnow
257 struct proc *p;
258
259 p = (struct proc *)mem;
260 EVENTHANDLER_INVOKE(process_fini, p);
261 pstats_free(p->p_stats);
262 thread_free(FIRST_THREAD_IN_PROC(p));
263 mtx_destroy(&p->p_mtx);
264 if (p->p_ksi != NULL)
265 ksiginfo_free(p->p_ksi);
266 #else
267 panic("proc reclaimed");
268 #endif
269 }
270
271 /*
272 * Is p an inferior of the current process?
273 */
274 int
275 inferior(p)
276 register struct proc *p;
277 {
278
279 sx_assert(&proctree_lock, SX_LOCKED);
280 for (; p != curproc; p = p->p_pptr)
281 if (p->p_pid == 0)
282 return (0);
283 return (1);
284 }
285
286 /*
287 * Locate a process by number; return only "live" processes -- i.e., neither
288 * zombies nor newly born but incompletely initialized processes. By not
289 * returning processes in the PRS_NEW state, we allow callers to avoid
290 * testing for that condition to avoid dereferencing p_ucred, et al.
291 */
292 struct proc *
293 pfind(pid)
294 register pid_t pid;
295 {
296 register struct proc *p;
297
298 sx_slock(&allproc_lock);
299 LIST_FOREACH(p, PIDHASH(pid), p_hash)
300 if (p->p_pid == pid) {
301 PROC_LOCK(p);
302 if (p->p_state == PRS_NEW) {
303 PROC_UNLOCK(p);
304 p = NULL;
305 }
306 break;
307 }
308 sx_sunlock(&allproc_lock);
309 return (p);
310 }
311
312 static struct proc *
313 pfind_tid(pid_t tid)
314 {
315 struct proc *p;
316 struct thread *td;
317
318 sx_slock(&allproc_lock);
319 FOREACH_PROC_IN_SYSTEM(p) {
320 PROC_LOCK(p);
321 if (p->p_state == PRS_NEW) {
322 PROC_UNLOCK(p);
323 continue;
324 }
325 FOREACH_THREAD_IN_PROC(p, td) {
326 if (td->td_tid == tid)
327 goto found;
328 }
329 PROC_UNLOCK(p);
330 }
331 found:
332 sx_sunlock(&allproc_lock);
333 return (p);
334 }
335
336 /*
337 * Locate a process group by number.
338 * The caller must hold proctree_lock.
339 */
340 struct pgrp *
341 pgfind(pgid)
342 register pid_t pgid;
343 {
344 register struct pgrp *pgrp;
345
346 sx_assert(&proctree_lock, SX_LOCKED);
347
348 LIST_FOREACH(pgrp, PGRPHASH(pgid), pg_hash) {
349 if (pgrp->pg_id == pgid) {
350 PGRP_LOCK(pgrp);
351 return (pgrp);
352 }
353 }
354 return (NULL);
355 }
356
357 /*
358 * Locate process and do additional manipulations, depending on flags.
359 */
360 int
361 pget(pid_t pid, int flags, struct proc **pp)
362 {
363 struct proc *p;
364 int error;
365
366 if (pid <= PID_MAX)
367 p = pfind(pid);
368 else if ((flags & PGET_NOTID) == 0)
369 p = pfind_tid(pid);
370 else
371 p = NULL;
372 if (p == NULL)
373 return (ESRCH);
374 if ((flags & PGET_CANSEE) != 0) {
375 error = p_cansee(curthread, p);
376 if (error != 0)
377 goto errout;
378 }
379 if ((flags & PGET_CANDEBUG) != 0) {
380 error = p_candebug(curthread, p);
381 if (error != 0)
382 goto errout;
383 }
384 if ((flags & PGET_ISCURRENT) != 0 && curproc != p) {
385 error = EPERM;
386 goto errout;
387 }
388 if ((flags & PGET_NOTWEXIT) != 0 && (p->p_flag & P_WEXIT) != 0) {
389 error = ESRCH;
390 goto errout;
391 }
392 if ((flags & PGET_NOTINEXEC) != 0 && (p->p_flag & P_INEXEC) != 0) {
393 /*
394 * XXXRW: Not clear ESRCH is the right error during proc
395 * execve().
396 */
397 error = ESRCH;
398 goto errout;
399 }
400 if ((flags & PGET_HOLD) != 0) {
401 _PHOLD(p);
402 PROC_UNLOCK(p);
403 }
404 *pp = p;
405 return (0);
406 errout:
407 PROC_UNLOCK(p);
408 return (error);
409 }
410
411 /*
412 * Create a new process group.
413 * pgid must be equal to the pid of p.
414 * Begin a new session if required.
415 */
416 int
417 enterpgrp(p, pgid, pgrp, sess)
418 register struct proc *p;
419 pid_t pgid;
420 struct pgrp *pgrp;
421 struct session *sess;
422 {
423 struct pgrp *pgrp2;
424
425 sx_assert(&proctree_lock, SX_XLOCKED);
426
427 KASSERT(pgrp != NULL, ("enterpgrp: pgrp == NULL"));
428 KASSERT(p->p_pid == pgid,
429 ("enterpgrp: new pgrp and pid != pgid"));
430
431 pgrp2 = pgfind(pgid);
432
433 KASSERT(pgrp2 == NULL,
434 ("enterpgrp: pgrp with pgid exists"));
435 KASSERT(!SESS_LEADER(p),
436 ("enterpgrp: session leader attempted setpgrp"));
437
438 mtx_init(&pgrp->pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
439
440 if (sess != NULL) {
441 /*
442 * new session
443 */
444 mtx_init(&sess->s_mtx, "session", NULL, MTX_DEF);
445 PROC_LOCK(p);
446 p->p_flag &= ~P_CONTROLT;
447 PROC_UNLOCK(p);
448 PGRP_LOCK(pgrp);
449 sess->s_leader = p;
450 sess->s_sid = p->p_pid;
451 refcount_init(&sess->s_count, 1);
452 sess->s_ttyvp = NULL;
453 sess->s_ttydp = NULL;
454 sess->s_ttyp = NULL;
455 bcopy(p->p_session->s_login, sess->s_login,
456 sizeof(sess->s_login));
457 pgrp->pg_session = sess;
458 KASSERT(p == curproc,
459 ("enterpgrp: mksession and p != curproc"));
460 } else {
461 pgrp->pg_session = p->p_session;
462 sess_hold(pgrp->pg_session);
463 PGRP_LOCK(pgrp);
464 }
465 pgrp->pg_id = pgid;
466 LIST_INIT(&pgrp->pg_members);
467
468 /*
469 * As we have an exclusive lock of proctree_lock,
470 * this should not deadlock.
471 */
472 LIST_INSERT_HEAD(PGRPHASH(pgid), pgrp, pg_hash);
473 pgrp->pg_jobc = 0;
474 SLIST_INIT(&pgrp->pg_sigiolst);
475 PGRP_UNLOCK(pgrp);
476
477 doenterpgrp(p, pgrp);
478
479 return (0);
480 }
481
482 /*
483 * Move p to an existing process group
484 */
485 int
486 enterthispgrp(p, pgrp)
487 register struct proc *p;
488 struct pgrp *pgrp;
489 {
490
491 sx_assert(&proctree_lock, SX_XLOCKED);
492 PROC_LOCK_ASSERT(p, MA_NOTOWNED);
493 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
494 PGRP_LOCK_ASSERT(p->p_pgrp, MA_NOTOWNED);
495 SESS_LOCK_ASSERT(p->p_session, MA_NOTOWNED);
496 KASSERT(pgrp->pg_session == p->p_session,
497 ("%s: pgrp's session %p, p->p_session %p.\n",
498 __func__,
499 pgrp->pg_session,
500 p->p_session));
501 KASSERT(pgrp != p->p_pgrp,
502 ("%s: p belongs to pgrp.", __func__));
503
504 doenterpgrp(p, pgrp);
505
506 return (0);
507 }
508
509 /*
510 * Move p to a process group
511 */
512 static void
513 doenterpgrp(p, pgrp)
514 struct proc *p;
515 struct pgrp *pgrp;
516 {
517 struct pgrp *savepgrp;
518
519 sx_assert(&proctree_lock, SX_XLOCKED);
520 PROC_LOCK_ASSERT(p, MA_NOTOWNED);
521 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
522 PGRP_LOCK_ASSERT(p->p_pgrp, MA_NOTOWNED);
523 SESS_LOCK_ASSERT(p->p_session, MA_NOTOWNED);
524
525 savepgrp = p->p_pgrp;
526
527 /*
528 * Adjust eligibility of affected pgrps to participate in job control.
529 * Increment eligibility counts before decrementing, otherwise we
530 * could reach 0 spuriously during the first call.
531 */
532 fixjobc(p, pgrp, 1);
533 fixjobc(p, p->p_pgrp, 0);
534
535 PGRP_LOCK(pgrp);
536 PGRP_LOCK(savepgrp);
537 PROC_LOCK(p);
538 LIST_REMOVE(p, p_pglist);
539 p->p_pgrp = pgrp;
540 PROC_UNLOCK(p);
541 LIST_INSERT_HEAD(&pgrp->pg_members, p, p_pglist);
542 PGRP_UNLOCK(savepgrp);
543 PGRP_UNLOCK(pgrp);
544 if (LIST_EMPTY(&savepgrp->pg_members))
545 pgdelete(savepgrp);
546 }
547
548 /*
549 * remove process from process group
550 */
551 int
552 leavepgrp(p)
553 register struct proc *p;
554 {
555 struct pgrp *savepgrp;
556
557 sx_assert(&proctree_lock, SX_XLOCKED);
558 savepgrp = p->p_pgrp;
559 PGRP_LOCK(savepgrp);
560 PROC_LOCK(p);
561 LIST_REMOVE(p, p_pglist);
562 p->p_pgrp = NULL;
563 PROC_UNLOCK(p);
564 PGRP_UNLOCK(savepgrp);
565 if (LIST_EMPTY(&savepgrp->pg_members))
566 pgdelete(savepgrp);
567 return (0);
568 }
569
570 /*
571 * delete a process group
572 */
573 static void
574 pgdelete(pgrp)
575 register struct pgrp *pgrp;
576 {
577 struct session *savesess;
578 struct tty *tp;
579
580 sx_assert(&proctree_lock, SX_XLOCKED);
581 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
582 SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED);
583
584 /*
585 * Reset any sigio structures pointing to us as a result of
586 * F_SETOWN with our pgid.
587 */
588 funsetownlst(&pgrp->pg_sigiolst);
589
590 PGRP_LOCK(pgrp);
591 tp = pgrp->pg_session->s_ttyp;
592 LIST_REMOVE(pgrp, pg_hash);
593 savesess = pgrp->pg_session;
594 PGRP_UNLOCK(pgrp);
595
596 /* Remove the reference to the pgrp before deallocating it. */
597 if (tp != NULL) {
598 tty_lock(tp);
599 tty_rel_pgrp(tp, pgrp);
600 }
601
602 mtx_destroy(&pgrp->pg_mtx);
603 free(pgrp, M_PGRP);
604 sess_release(savesess);
605 }
606
607 static void
608 pgadjustjobc(pgrp, entering)
609 struct pgrp *pgrp;
610 int entering;
611 {
612
613 PGRP_LOCK(pgrp);
614 if (entering)
615 pgrp->pg_jobc++;
616 else {
617 --pgrp->pg_jobc;
618 if (pgrp->pg_jobc == 0)
619 orphanpg(pgrp);
620 }
621 PGRP_UNLOCK(pgrp);
622 }
623
624 /*
625 * Adjust pgrp jobc counters when specified process changes process group.
626 * We count the number of processes in each process group that "qualify"
627 * the group for terminal job control (those with a parent in a different
628 * process group of the same session). If that count reaches zero, the
629 * process group becomes orphaned. Check both the specified process'
630 * process group and that of its children.
631 * entering == 0 => p is leaving specified group.
632 * entering == 1 => p is entering specified group.
633 */
634 void
635 fixjobc(p, pgrp, entering)
636 register struct proc *p;
637 register struct pgrp *pgrp;
638 int entering;
639 {
640 register struct pgrp *hispgrp;
641 register struct session *mysession;
642
643 sx_assert(&proctree_lock, SX_LOCKED);
644 PROC_LOCK_ASSERT(p, MA_NOTOWNED);
645 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
646 SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED);
647
648 /*
649 * Check p's parent to see whether p qualifies its own process
650 * group; if so, adjust count for p's process group.
651 */
652 mysession = pgrp->pg_session;
653 if ((hispgrp = p->p_pptr->p_pgrp) != pgrp &&
654 hispgrp->pg_session == mysession)
655 pgadjustjobc(pgrp, entering);
656
657 /*
658 * Check this process' children to see whether they qualify
659 * their process groups; if so, adjust counts for children's
660 * process groups.
661 */
662 LIST_FOREACH(p, &p->p_children, p_sibling) {
663 hispgrp = p->p_pgrp;
664 if (hispgrp == pgrp ||
665 hispgrp->pg_session != mysession)
666 continue;
667 PROC_LOCK(p);
668 if (p->p_state == PRS_ZOMBIE) {
669 PROC_UNLOCK(p);
670 continue;
671 }
672 PROC_UNLOCK(p);
673 pgadjustjobc(hispgrp, entering);
674 }
675 }
676
677 /*
678 * A process group has become orphaned;
679 * if there are any stopped processes in the group,
680 * hang-up all process in that group.
681 */
682 static void
683 orphanpg(pg)
684 struct pgrp *pg;
685 {
686 register struct proc *p;
687
688 PGRP_LOCK_ASSERT(pg, MA_OWNED);
689
690 LIST_FOREACH(p, &pg->pg_members, p_pglist) {
691 PROC_LOCK(p);
692 if (P_SHOULDSTOP(p)) {
693 PROC_UNLOCK(p);
694 LIST_FOREACH(p, &pg->pg_members, p_pglist) {
695 PROC_LOCK(p);
696 kern_psignal(p, SIGHUP);
697 kern_psignal(p, SIGCONT);
698 PROC_UNLOCK(p);
699 }
700 return;
701 }
702 PROC_UNLOCK(p);
703 }
704 }
705
706 void
707 sess_hold(struct session *s)
708 {
709
710 refcount_acquire(&s->s_count);
711 }
712
713 void
714 sess_release(struct session *s)
715 {
716
717 if (refcount_release(&s->s_count)) {
718 if (s->s_ttyp != NULL) {
719 tty_lock(s->s_ttyp);
720 tty_rel_sess(s->s_ttyp, s);
721 }
722 mtx_destroy(&s->s_mtx);
723 free(s, M_SESSION);
724 }
725 }
726
727 #include "opt_ddb.h"
728 #ifdef DDB
729 #include <ddb/ddb.h>
730
731 DB_SHOW_COMMAND(pgrpdump, pgrpdump)
732 {
733 register struct pgrp *pgrp;
734 register struct proc *p;
735 register int i;
736
737 for (i = 0; i <= pgrphash; i++) {
738 if (!LIST_EMPTY(&pgrphashtbl[i])) {
739 printf("\tindx %d\n", i);
740 LIST_FOREACH(pgrp, &pgrphashtbl[i], pg_hash) {
741 printf(
742 "\tpgrp %p, pgid %ld, sess %p, sesscnt %d, mem %p\n",
743 (void *)pgrp, (long)pgrp->pg_id,
744 (void *)pgrp->pg_session,
745 pgrp->pg_session->s_count,
746 (void *)LIST_FIRST(&pgrp->pg_members));
747 LIST_FOREACH(p, &pgrp->pg_members, p_pglist) {
748 printf("\t\tpid %ld addr %p pgrp %p\n",
749 (long)p->p_pid, (void *)p,
750 (void *)p->p_pgrp);
751 }
752 }
753 }
754 }
755 }
756 #endif /* DDB */
757
758 /*
759 * Calculate the kinfo_proc members which contain process-wide
760 * informations.
761 * Must be called with the target process locked.
762 */
763 static void
764 fill_kinfo_aggregate(struct proc *p, struct kinfo_proc *kp)
765 {
766 struct thread *td;
767
768 PROC_LOCK_ASSERT(p, MA_OWNED);
769
770 kp->ki_estcpu = 0;
771 kp->ki_pctcpu = 0;
772 FOREACH_THREAD_IN_PROC(p, td) {
773 thread_lock(td);
774 kp->ki_pctcpu += sched_pctcpu(td);
775 kp->ki_estcpu += td->td_estcpu;
776 thread_unlock(td);
777 }
778 }
779
780 /*
781 * Clear kinfo_proc and fill in any information that is common
782 * to all threads in the process.
783 * Must be called with the target process locked.
784 */
785 static void
786 fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp)
787 {
788 struct thread *td0;
789 struct tty *tp;
790 struct session *sp;
791 struct ucred *cred;
792 struct sigacts *ps;
793
794 PROC_LOCK_ASSERT(p, MA_OWNED);
795 bzero(kp, sizeof(*kp));
796
797 kp->ki_structsize = sizeof(*kp);
798 kp->ki_paddr = p;
799 kp->ki_addr =/* p->p_addr; */0; /* XXX */
800 kp->ki_args = p->p_args;
801 kp->ki_textvp = p->p_textvp;
802 #ifdef KTRACE
803 kp->ki_tracep = p->p_tracevp;
804 kp->ki_traceflag = p->p_traceflag;
805 #endif
806 kp->ki_fd = p->p_fd;
807 kp->ki_vmspace = p->p_vmspace;
808 kp->ki_flag = p->p_flag;
809 cred = p->p_ucred;
810 if (cred) {
811 kp->ki_uid = cred->cr_uid;
812 kp->ki_ruid = cred->cr_ruid;
813 kp->ki_svuid = cred->cr_svuid;
814 kp->ki_cr_flags = 0;
815 if (cred->cr_flags & CRED_FLAG_CAPMODE)
816 kp->ki_cr_flags |= KI_CRF_CAPABILITY_MODE;
817 /* XXX bde doesn't like KI_NGROUPS */
818 if (cred->cr_ngroups > KI_NGROUPS) {
819 kp->ki_ngroups = KI_NGROUPS;
820 kp->ki_cr_flags |= KI_CRF_GRP_OVERFLOW;
821 } else
822 kp->ki_ngroups = cred->cr_ngroups;
823 bcopy(cred->cr_groups, kp->ki_groups,
824 kp->ki_ngroups * sizeof(gid_t));
825 kp->ki_rgid = cred->cr_rgid;
826 kp->ki_svgid = cred->cr_svgid;
827 /* If jailed(cred), emulate the old P_JAILED flag. */
828 if (jailed(cred)) {
829 kp->ki_flag |= P_JAILED;
830 /* If inside the jail, use 0 as a jail ID. */
831 if (cred->cr_prison != curthread->td_ucred->cr_prison)
832 kp->ki_jid = cred->cr_prison->pr_id;
833 }
834 strlcpy(kp->ki_loginclass, cred->cr_loginclass->lc_name,
835 sizeof(kp->ki_loginclass));
836 }
837 ps = p->p_sigacts;
838 if (ps) {
839 mtx_lock(&ps->ps_mtx);
840 kp->ki_sigignore = ps->ps_sigignore;
841 kp->ki_sigcatch = ps->ps_sigcatch;
842 mtx_unlock(&ps->ps_mtx);
843 }
844 if (p->p_state != PRS_NEW &&
845 p->p_state != PRS_ZOMBIE &&
846 p->p_vmspace != NULL) {
847 struct vmspace *vm = p->p_vmspace;
848
849 kp->ki_size = vm->vm_map.size;
850 kp->ki_rssize = vmspace_resident_count(vm); /*XXX*/
851 FOREACH_THREAD_IN_PROC(p, td0) {
852 if (!TD_IS_SWAPPED(td0))
853 kp->ki_rssize += td0->td_kstack_pages;
854 }
855 kp->ki_swrss = vm->vm_swrss;
856 kp->ki_tsize = vm->vm_tsize;
857 kp->ki_dsize = vm->vm_dsize;
858 kp->ki_ssize = vm->vm_ssize;
859 } else if (p->p_state == PRS_ZOMBIE)
860 kp->ki_stat = SZOMB;
861 if (kp->ki_flag & P_INMEM)
862 kp->ki_sflag = PS_INMEM;
863 else
864 kp->ki_sflag = 0;
865 /* Calculate legacy swtime as seconds since 'swtick'. */
866 kp->ki_swtime = (ticks - p->p_swtick) / hz;
867 kp->ki_pid = p->p_pid;
868 kp->ki_nice = p->p_nice;
869 kp->ki_start = p->p_stats->p_start;
870 timevaladd(&kp->ki_start, &boottime);
871 PROC_SLOCK(p);
872 rufetch(p, &kp->ki_rusage);
873 kp->ki_runtime = cputick2usec(p->p_rux.rux_runtime);
874 calcru(p, &kp->ki_rusage.ru_utime, &kp->ki_rusage.ru_stime);
875 PROC_SUNLOCK(p);
876 calccru(p, &kp->ki_childutime, &kp->ki_childstime);
877 /* Some callers want child times in a single value. */
878 kp->ki_childtime = kp->ki_childstime;
879 timevaladd(&kp->ki_childtime, &kp->ki_childutime);
880
881 FOREACH_THREAD_IN_PROC(p, td0)
882 kp->ki_cow += td0->td_cow;
883
884 tp = NULL;
885 if (p->p_pgrp) {
886 kp->ki_pgid = p->p_pgrp->pg_id;
887 kp->ki_jobc = p->p_pgrp->pg_jobc;
888 sp = p->p_pgrp->pg_session;
889
890 if (sp != NULL) {
891 kp->ki_sid = sp->s_sid;
892 SESS_LOCK(sp);
893 strlcpy(kp->ki_login, sp->s_login,
894 sizeof(kp->ki_login));
895 if (sp->s_ttyvp)
896 kp->ki_kiflag |= KI_CTTY;
897 if (SESS_LEADER(p))
898 kp->ki_kiflag |= KI_SLEADER;
899 /* XXX proctree_lock */
900 tp = sp->s_ttyp;
901 SESS_UNLOCK(sp);
902 }
903 }
904 if ((p->p_flag & P_CONTROLT) && tp != NULL) {
905 kp->ki_tdev = tty_udev(tp);
906 kp->ki_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID;
907 if (tp->t_session)
908 kp->ki_tsid = tp->t_session->s_sid;
909 } else
910 kp->ki_tdev = NODEV;
911 if (p->p_comm[0] != '\0')
912 strlcpy(kp->ki_comm, p->p_comm, sizeof(kp->ki_comm));
913 if (p->p_sysent && p->p_sysent->sv_name != NULL &&
914 p->p_sysent->sv_name[0] != '\0')
915 strlcpy(kp->ki_emul, p->p_sysent->sv_name, sizeof(kp->ki_emul));
916 kp->ki_siglist = p->p_siglist;
917 kp->ki_xstat = p->p_xstat;
918 kp->ki_acflag = p->p_acflag;
919 kp->ki_lock = p->p_lock;
920 if (p->p_pptr)
921 kp->ki_ppid = p->p_pptr->p_pid;
922 }
923
924 /*
925 * Fill in information that is thread specific. Must be called with
926 * target process locked. If 'preferthread' is set, overwrite certain
927 * process-related fields that are maintained for both threads and
928 * processes.
929 */
930 static void
931 fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp, int preferthread)
932 {
933 struct proc *p;
934
935 p = td->td_proc;
936 kp->ki_tdaddr = td;
937 PROC_LOCK_ASSERT(p, MA_OWNED);
938
939 if (preferthread)
940 PROC_SLOCK(p);
941 thread_lock(td);
942 if (td->td_wmesg != NULL)
943 strlcpy(kp->ki_wmesg, td->td_wmesg, sizeof(kp->ki_wmesg));
944 else
945 bzero(kp->ki_wmesg, sizeof(kp->ki_wmesg));
946 strlcpy(kp->ki_tdname, td->td_name, sizeof(kp->ki_tdname));
947 if (TD_ON_LOCK(td)) {
948 kp->ki_kiflag |= KI_LOCKBLOCK;
949 strlcpy(kp->ki_lockname, td->td_lockname,
950 sizeof(kp->ki_lockname));
951 } else {
952 kp->ki_kiflag &= ~KI_LOCKBLOCK;
953 bzero(kp->ki_lockname, sizeof(kp->ki_lockname));
954 }
955
956 if (p->p_state == PRS_NORMAL) { /* approximate. */
957 if (TD_ON_RUNQ(td) ||
958 TD_CAN_RUN(td) ||
959 TD_IS_RUNNING(td)) {
960 kp->ki_stat = SRUN;
961 } else if (P_SHOULDSTOP(p)) {
962 kp->ki_stat = SSTOP;
963 } else if (TD_IS_SLEEPING(td)) {
964 kp->ki_stat = SSLEEP;
965 } else if (TD_ON_LOCK(td)) {
966 kp->ki_stat = SLOCK;
967 } else {
968 kp->ki_stat = SWAIT;
969 }
970 } else if (p->p_state == PRS_ZOMBIE) {
971 kp->ki_stat = SZOMB;
972 } else {
973 kp->ki_stat = SIDL;
974 }
975
976 /* Things in the thread */
977 kp->ki_wchan = td->td_wchan;
978 kp->ki_pri.pri_level = td->td_priority;
979 kp->ki_pri.pri_native = td->td_base_pri;
980 kp->ki_lastcpu = td->td_lastcpu;
981 kp->ki_oncpu = td->td_oncpu;
982 kp->ki_tdflags = td->td_flags;
983 kp->ki_tid = td->td_tid;
984 kp->ki_numthreads = p->p_numthreads;
985 kp->ki_pcb = td->td_pcb;
986 kp->ki_kstack = (void *)td->td_kstack;
987 kp->ki_slptime = (ticks - td->td_slptick) / hz;
988 kp->ki_pri.pri_class = td->td_pri_class;
989 kp->ki_pri.pri_user = td->td_user_pri;
990
991 if (preferthread) {
992 rufetchtd(td, &kp->ki_rusage);
993 kp->ki_runtime = cputick2usec(td->td_rux.rux_runtime);
994 kp->ki_pctcpu = sched_pctcpu(td);
995 kp->ki_estcpu = td->td_estcpu;
996 kp->ki_cow = td->td_cow;
997 }
998
999 /* We can't get this anymore but ps etc never used it anyway. */
1000 kp->ki_rqindex = 0;
1001
1002 if (preferthread)
1003 kp->ki_siglist = td->td_siglist;
1004 kp->ki_sigmask = td->td_sigmask;
1005 thread_unlock(td);
1006 if (preferthread)
1007 PROC_SUNLOCK(p);
1008 }
1009
1010 /*
1011 * Fill in a kinfo_proc structure for the specified process.
1012 * Must be called with the target process locked.
1013 */
1014 void
1015 fill_kinfo_proc(struct proc *p, struct kinfo_proc *kp)
1016 {
1017
1018 MPASS(FIRST_THREAD_IN_PROC(p) != NULL);
1019
1020 fill_kinfo_proc_only(p, kp);
1021 fill_kinfo_thread(FIRST_THREAD_IN_PROC(p), kp, 0);
1022 fill_kinfo_aggregate(p, kp);
1023 }
1024
1025 struct pstats *
1026 pstats_alloc(void)
1027 {
1028
1029 return (malloc(sizeof(struct pstats), M_SUBPROC, M_ZERO|M_WAITOK));
1030 }
1031
1032 /*
1033 * Copy parts of p_stats; zero the rest of p_stats (statistics).
1034 */
1035 void
1036 pstats_fork(struct pstats *src, struct pstats *dst)
1037 {
1038
1039 bzero(&dst->pstat_startzero,
1040 __rangeof(struct pstats, pstat_startzero, pstat_endzero));
1041 bcopy(&src->pstat_startcopy, &dst->pstat_startcopy,
1042 __rangeof(struct pstats, pstat_startcopy, pstat_endcopy));
1043 }
1044
1045 void
1046 pstats_free(struct pstats *ps)
1047 {
1048
1049 free(ps, M_SUBPROC);
1050 }
1051
1052 /*
1053 * Locate a zombie process by number
1054 */
1055 struct proc *
1056 zpfind(pid_t pid)
1057 {
1058 struct proc *p;
1059
1060 sx_slock(&allproc_lock);
1061 LIST_FOREACH(p, &zombproc, p_list)
1062 if (p->p_pid == pid) {
1063 PROC_LOCK(p);
1064 break;
1065 }
1066 sx_sunlock(&allproc_lock);
1067 return (p);
1068 }
1069
1070 #define KERN_PROC_ZOMBMASK 0x3
1071 #define KERN_PROC_NOTHREADS 0x4
1072
1073 #ifdef COMPAT_FREEBSD32
1074
1075 /*
1076 * This function is typically used to copy out the kernel address, so
1077 * it can be replaced by assignment of zero.
1078 */
1079 static inline uint32_t
1080 ptr32_trim(void *ptr)
1081 {
1082 uintptr_t uptr;
1083
1084 uptr = (uintptr_t)ptr;
1085 return ((uptr > UINT_MAX) ? 0 : uptr);
1086 }
1087
1088 #define PTRTRIM_CP(src,dst,fld) \
1089 do { (dst).fld = ptr32_trim((src).fld); } while (0)
1090
1091 static void
1092 freebsd32_kinfo_proc_out(const struct kinfo_proc *ki, struct kinfo_proc32 *ki32)
1093 {
1094 int i;
1095
1096 bzero(ki32, sizeof(struct kinfo_proc32));
1097 ki32->ki_structsize = sizeof(struct kinfo_proc32);
1098 CP(*ki, *ki32, ki_layout);
1099 PTRTRIM_CP(*ki, *ki32, ki_args);
1100 PTRTRIM_CP(*ki, *ki32, ki_paddr);
1101 PTRTRIM_CP(*ki, *ki32, ki_addr);
1102 PTRTRIM_CP(*ki, *ki32, ki_tracep);
1103 PTRTRIM_CP(*ki, *ki32, ki_textvp);
1104 PTRTRIM_CP(*ki, *ki32, ki_fd);
1105 PTRTRIM_CP(*ki, *ki32, ki_vmspace);
1106 PTRTRIM_CP(*ki, *ki32, ki_wchan);
1107 CP(*ki, *ki32, ki_pid);
1108 CP(*ki, *ki32, ki_ppid);
1109 CP(*ki, *ki32, ki_pgid);
1110 CP(*ki, *ki32, ki_tpgid);
1111 CP(*ki, *ki32, ki_sid);
1112 CP(*ki, *ki32, ki_tsid);
1113 CP(*ki, *ki32, ki_jobc);
1114 CP(*ki, *ki32, ki_tdev);
1115 CP(*ki, *ki32, ki_siglist);
1116 CP(*ki, *ki32, ki_sigmask);
1117 CP(*ki, *ki32, ki_sigignore);
1118 CP(*ki, *ki32, ki_sigcatch);
1119 CP(*ki, *ki32, ki_uid);
1120 CP(*ki, *ki32, ki_ruid);
1121 CP(*ki, *ki32, ki_svuid);
1122 CP(*ki, *ki32, ki_rgid);
1123 CP(*ki, *ki32, ki_svgid);
1124 CP(*ki, *ki32, ki_ngroups);
1125 for (i = 0; i < KI_NGROUPS; i++)
1126 CP(*ki, *ki32, ki_groups[i]);
1127 CP(*ki, *ki32, ki_size);
1128 CP(*ki, *ki32, ki_rssize);
1129 CP(*ki, *ki32, ki_swrss);
1130 CP(*ki, *ki32, ki_tsize);
1131 CP(*ki, *ki32, ki_dsize);
1132 CP(*ki, *ki32, ki_ssize);
1133 CP(*ki, *ki32, ki_xstat);
1134 CP(*ki, *ki32, ki_acflag);
1135 CP(*ki, *ki32, ki_pctcpu);
1136 CP(*ki, *ki32, ki_estcpu);
1137 CP(*ki, *ki32, ki_slptime);
1138 CP(*ki, *ki32, ki_swtime);
1139 CP(*ki, *ki32, ki_cow);
1140 CP(*ki, *ki32, ki_runtime);
1141 TV_CP(*ki, *ki32, ki_start);
1142 TV_CP(*ki, *ki32, ki_childtime);
1143 CP(*ki, *ki32, ki_flag);
1144 CP(*ki, *ki32, ki_kiflag);
1145 CP(*ki, *ki32, ki_traceflag);
1146 CP(*ki, *ki32, ki_stat);
1147 CP(*ki, *ki32, ki_nice);
1148 CP(*ki, *ki32, ki_lock);
1149 CP(*ki, *ki32, ki_rqindex);
1150 CP(*ki, *ki32, ki_oncpu);
1151 CP(*ki, *ki32, ki_lastcpu);
1152 bcopy(ki->ki_tdname, ki32->ki_tdname, TDNAMLEN + 1);
1153 bcopy(ki->ki_wmesg, ki32->ki_wmesg, WMESGLEN + 1);
1154 bcopy(ki->ki_login, ki32->ki_login, LOGNAMELEN + 1);
1155 bcopy(ki->ki_lockname, ki32->ki_lockname, LOCKNAMELEN + 1);
1156 bcopy(ki->ki_comm, ki32->ki_comm, COMMLEN + 1);
1157 bcopy(ki->ki_emul, ki32->ki_emul, KI_EMULNAMELEN + 1);
1158 bcopy(ki->ki_loginclass, ki32->ki_loginclass, LOGINCLASSLEN + 1);
1159 CP(*ki, *ki32, ki_cr_flags);
1160 CP(*ki, *ki32, ki_jid);
1161 CP(*ki, *ki32, ki_numthreads);
1162 CP(*ki, *ki32, ki_tid);
1163 CP(*ki, *ki32, ki_pri);
1164 freebsd32_rusage_out(&ki->ki_rusage, &ki32->ki_rusage);
1165 freebsd32_rusage_out(&ki->ki_rusage_ch, &ki32->ki_rusage_ch);
1166 PTRTRIM_CP(*ki, *ki32, ki_pcb);
1167 PTRTRIM_CP(*ki, *ki32, ki_kstack);
1168 PTRTRIM_CP(*ki, *ki32, ki_udata);
1169 CP(*ki, *ki32, ki_sflag);
1170 CP(*ki, *ki32, ki_tdflags);
1171 }
1172
1173 static int
1174 sysctl_out_proc_copyout(struct kinfo_proc *ki, struct sysctl_req *req)
1175 {
1176 struct kinfo_proc32 ki32;
1177 int error;
1178
1179 if (req->flags & SCTL_MASK32) {
1180 freebsd32_kinfo_proc_out(ki, &ki32);
1181 error = SYSCTL_OUT(req, &ki32, sizeof(struct kinfo_proc32));
1182 } else
1183 error = SYSCTL_OUT(req, ki, sizeof(struct kinfo_proc));
1184 return (error);
1185 }
1186 #else
1187 static int
1188 sysctl_out_proc_copyout(struct kinfo_proc *ki, struct sysctl_req *req)
1189 {
1190
1191 return (SYSCTL_OUT(req, ki, sizeof(struct kinfo_proc)));
1192 }
1193 #endif
1194
1195 /*
1196 * Must be called with the process locked and will return with it unlocked.
1197 */
1198 static int
1199 sysctl_out_proc(struct proc *p, struct sysctl_req *req, int flags)
1200 {
1201 struct thread *td;
1202 struct kinfo_proc kinfo_proc;
1203 int error = 0;
1204 struct proc *np;
1205 pid_t pid = p->p_pid;
1206
1207 PROC_LOCK_ASSERT(p, MA_OWNED);
1208 MPASS(FIRST_THREAD_IN_PROC(p) != NULL);
1209
1210 fill_kinfo_proc(p, &kinfo_proc);
1211 if (flags & KERN_PROC_NOTHREADS)
1212 error = sysctl_out_proc_copyout(&kinfo_proc, req);
1213 else {
1214 FOREACH_THREAD_IN_PROC(p, td) {
1215 fill_kinfo_thread(td, &kinfo_proc, 1);
1216 error = sysctl_out_proc_copyout(&kinfo_proc, req);
1217 if (error)
1218 break;
1219 }
1220 }
1221 PROC_UNLOCK(p);
1222 if (error)
1223 return (error);
1224 if (flags & KERN_PROC_ZOMBMASK)
1225 np = zpfind(pid);
1226 else {
1227 if (pid == 0)
1228 return (0);
1229 np = pfind(pid);
1230 }
1231 if (np == NULL)
1232 return (ESRCH);
1233 if (np != p) {
1234 PROC_UNLOCK(np);
1235 return (ESRCH);
1236 }
1237 PROC_UNLOCK(np);
1238 return (0);
1239 }
1240
1241 static int
1242 sysctl_kern_proc(SYSCTL_HANDLER_ARGS)
1243 {
1244 int *name = (int *)arg1;
1245 u_int namelen = arg2;
1246 struct proc *p;
1247 int flags, doingzomb, oid_number;
1248 int error = 0;
1249
1250 oid_number = oidp->oid_number;
1251 if (oid_number != KERN_PROC_ALL &&
1252 (oid_number & KERN_PROC_INC_THREAD) == 0)
1253 flags = KERN_PROC_NOTHREADS;
1254 else {
1255 flags = 0;
1256 oid_number &= ~KERN_PROC_INC_THREAD;
1257 }
1258 if (oid_number == KERN_PROC_PID) {
1259 if (namelen != 1)
1260 return (EINVAL);
1261 error = sysctl_wire_old_buffer(req, 0);
1262 if (error)
1263 return (error);
1264 error = pget((pid_t)name[0], PGET_CANSEE, &p);
1265 if (error != 0)
1266 return (error);
1267 error = sysctl_out_proc(p, req, flags);
1268 return (error);
1269 }
1270
1271 switch (oid_number) {
1272 case KERN_PROC_ALL:
1273 if (namelen != 0)
1274 return (EINVAL);
1275 break;
1276 case KERN_PROC_PROC:
1277 if (namelen != 0 && namelen != 1)
1278 return (EINVAL);
1279 break;
1280 default:
1281 if (namelen != 1)
1282 return (EINVAL);
1283 break;
1284 }
1285
1286 if (!req->oldptr) {
1287 /* overestimate by 5 procs */
1288 error = SYSCTL_OUT(req, 0, sizeof (struct kinfo_proc) * 5);
1289 if (error)
1290 return (error);
1291 }
1292 error = sysctl_wire_old_buffer(req, 0);
1293 if (error != 0)
1294 return (error);
1295 sx_slock(&allproc_lock);
1296 for (doingzomb=0 ; doingzomb < 2 ; doingzomb++) {
1297 if (!doingzomb)
1298 p = LIST_FIRST(&allproc);
1299 else
1300 p = LIST_FIRST(&zombproc);
1301 for (; p != 0; p = LIST_NEXT(p, p_list)) {
1302 /*
1303 * Skip embryonic processes.
1304 */
1305 PROC_LOCK(p);
1306 if (p->p_state == PRS_NEW) {
1307 PROC_UNLOCK(p);
1308 continue;
1309 }
1310 KASSERT(p->p_ucred != NULL,
1311 ("process credential is NULL for non-NEW proc"));
1312 /*
1313 * Show a user only appropriate processes.
1314 */
1315 if (p_cansee(curthread, p)) {
1316 PROC_UNLOCK(p);
1317 continue;
1318 }
1319 /*
1320 * TODO - make more efficient (see notes below).
1321 * do by session.
1322 */
1323 switch (oid_number) {
1324
1325 case KERN_PROC_GID:
1326 if (p->p_ucred->cr_gid != (gid_t)name[0]) {
1327 PROC_UNLOCK(p);
1328 continue;
1329 }
1330 break;
1331
1332 case KERN_PROC_PGRP:
1333 /* could do this by traversing pgrp */
1334 if (p->p_pgrp == NULL ||
1335 p->p_pgrp->pg_id != (pid_t)name[0]) {
1336 PROC_UNLOCK(p);
1337 continue;
1338 }
1339 break;
1340
1341 case KERN_PROC_RGID:
1342 if (p->p_ucred->cr_rgid != (gid_t)name[0]) {
1343 PROC_UNLOCK(p);
1344 continue;
1345 }
1346 break;
1347
1348 case KERN_PROC_SESSION:
1349 if (p->p_session == NULL ||
1350 p->p_session->s_sid != (pid_t)name[0]) {
1351 PROC_UNLOCK(p);
1352 continue;
1353 }
1354 break;
1355
1356 case KERN_PROC_TTY:
1357 if ((p->p_flag & P_CONTROLT) == 0 ||
1358 p->p_session == NULL) {
1359 PROC_UNLOCK(p);
1360 continue;
1361 }
1362 /* XXX proctree_lock */
1363 SESS_LOCK(p->p_session);
1364 if (p->p_session->s_ttyp == NULL ||
1365 tty_udev(p->p_session->s_ttyp) !=
1366 (dev_t)name[0]) {
1367 SESS_UNLOCK(p->p_session);
1368 PROC_UNLOCK(p);
1369 continue;
1370 }
1371 SESS_UNLOCK(p->p_session);
1372 break;
1373
1374 case KERN_PROC_UID:
1375 if (p->p_ucred->cr_uid != (uid_t)name[0]) {
1376 PROC_UNLOCK(p);
1377 continue;
1378 }
1379 break;
1380
1381 case KERN_PROC_RUID:
1382 if (p->p_ucred->cr_ruid != (uid_t)name[0]) {
1383 PROC_UNLOCK(p);
1384 continue;
1385 }
1386 break;
1387
1388 case KERN_PROC_PROC:
1389 break;
1390
1391 default:
1392 break;
1393
1394 }
1395
1396 error = sysctl_out_proc(p, req, flags | doingzomb);
1397 if (error) {
1398 sx_sunlock(&allproc_lock);
1399 return (error);
1400 }
1401 }
1402 }
1403 sx_sunlock(&allproc_lock);
1404 return (0);
1405 }
1406
1407 struct pargs *
1408 pargs_alloc(int len)
1409 {
1410 struct pargs *pa;
1411
1412 pa = malloc(sizeof(struct pargs) + len, M_PARGS,
1413 M_WAITOK);
1414 refcount_init(&pa->ar_ref, 1);
1415 pa->ar_length = len;
1416 return (pa);
1417 }
1418
1419 static void
1420 pargs_free(struct pargs *pa)
1421 {
1422
1423 free(pa, M_PARGS);
1424 }
1425
1426 void
1427 pargs_hold(struct pargs *pa)
1428 {
1429
1430 if (pa == NULL)
1431 return;
1432 refcount_acquire(&pa->ar_ref);
1433 }
1434
1435 void
1436 pargs_drop(struct pargs *pa)
1437 {
1438
1439 if (pa == NULL)
1440 return;
1441 if (refcount_release(&pa->ar_ref))
1442 pargs_free(pa);
1443 }
1444
1445 static int
1446 proc_read_mem(struct thread *td, struct proc *p, vm_offset_t offset, void* buf,
1447 size_t len)
1448 {
1449 struct iovec iov;
1450 struct uio uio;
1451
1452 iov.iov_base = (caddr_t)buf;
1453 iov.iov_len = len;
1454 uio.uio_iov = &iov;
1455 uio.uio_iovcnt = 1;
1456 uio.uio_offset = offset;
1457 uio.uio_resid = (ssize_t)len;
1458 uio.uio_segflg = UIO_SYSSPACE;
1459 uio.uio_rw = UIO_READ;
1460 uio.uio_td = td;
1461
1462 return (proc_rwmem(p, &uio));
1463 }
1464
1465 static int
1466 proc_read_string(struct thread *td, struct proc *p, const char *sptr, char *buf,
1467 size_t len)
1468 {
1469 size_t i;
1470 int error;
1471
1472 error = proc_read_mem(td, p, (vm_offset_t)sptr, buf, len);
1473 /*
1474 * Reading the chunk may validly return EFAULT if the string is shorter
1475 * than the chunk and is aligned at the end of the page, assuming the
1476 * next page is not mapped. So if EFAULT is returned do a fallback to
1477 * one byte read loop.
1478 */
1479 if (error == EFAULT) {
1480 for (i = 0; i < len; i++, buf++, sptr++) {
1481 error = proc_read_mem(td, p, (vm_offset_t)sptr, buf, 1);
1482 if (error != 0)
1483 return (error);
1484 if (*buf == '\0')
1485 break;
1486 }
1487 error = 0;
1488 }
1489 return (error);
1490 }
1491
1492 #define PROC_AUXV_MAX 256 /* Safety limit on auxv size. */
1493
1494 enum proc_vector_type {
1495 PROC_ARG,
1496 PROC_ENV,
1497 PROC_AUX,
1498 };
1499
1500 #ifdef COMPAT_FREEBSD32
1501 static int
1502 get_proc_vector32(struct thread *td, struct proc *p, char ***proc_vectorp,
1503 size_t *vsizep, enum proc_vector_type type)
1504 {
1505 struct freebsd32_ps_strings pss;
1506 Elf32_Auxinfo aux;
1507 vm_offset_t vptr, ptr;
1508 uint32_t *proc_vector32;
1509 char **proc_vector;
1510 size_t vsize, size;
1511 int i, error;
1512
1513 error = proc_read_mem(td, p, (vm_offset_t)(p->p_sysent->sv_psstrings),
1514 &pss, sizeof(pss));
1515 if (error != 0)
1516 return (error);
1517 switch (type) {
1518 case PROC_ARG:
1519 vptr = (vm_offset_t)PTRIN(pss.ps_argvstr);
1520 vsize = pss.ps_nargvstr;
1521 if (vsize > ARG_MAX)
1522 return (ENOEXEC);
1523 size = vsize * sizeof(int32_t);
1524 break;
1525 case PROC_ENV:
1526 vptr = (vm_offset_t)PTRIN(pss.ps_envstr);
1527 vsize = pss.ps_nenvstr;
1528 if (vsize > ARG_MAX)
1529 return (ENOEXEC);
1530 size = vsize * sizeof(int32_t);
1531 break;
1532 case PROC_AUX:
1533 vptr = (vm_offset_t)PTRIN(pss.ps_envstr) +
1534 (pss.ps_nenvstr + 1) * sizeof(int32_t);
1535 if (vptr % 4 != 0)
1536 return (ENOEXEC);
1537 for (ptr = vptr, i = 0; i < PROC_AUXV_MAX; i++) {
1538 error = proc_read_mem(td, p, ptr, &aux, sizeof(aux));
1539 if (error != 0)
1540 return (error);
1541 if (aux.a_type == AT_NULL)
1542 break;
1543 ptr += sizeof(aux);
1544 }
1545 if (aux.a_type != AT_NULL)
1546 return (ENOEXEC);
1547 vsize = i + 1;
1548 size = vsize * sizeof(aux);
1549 break;
1550 default:
1551 KASSERT(0, ("Wrong proc vector type: %d", type));
1552 return (EINVAL);
1553 }
1554 proc_vector32 = malloc(size, M_TEMP, M_WAITOK);
1555 error = proc_read_mem(td, p, vptr, proc_vector32, size);
1556 if (error != 0)
1557 goto done;
1558 if (type == PROC_AUX) {
1559 *proc_vectorp = (char **)proc_vector32;
1560 *vsizep = vsize;
1561 return (0);
1562 }
1563 proc_vector = malloc(vsize * sizeof(char *), M_TEMP, M_WAITOK);
1564 for (i = 0; i < (int)vsize; i++)
1565 proc_vector[i] = PTRIN(proc_vector32[i]);
1566 *proc_vectorp = proc_vector;
1567 *vsizep = vsize;
1568 done:
1569 free(proc_vector32, M_TEMP);
1570 return (error);
1571 }
1572 #endif
1573
1574 static int
1575 get_proc_vector(struct thread *td, struct proc *p, char ***proc_vectorp,
1576 size_t *vsizep, enum proc_vector_type type)
1577 {
1578 struct ps_strings pss;
1579 Elf_Auxinfo aux;
1580 vm_offset_t vptr, ptr;
1581 char **proc_vector;
1582 size_t vsize, size;
1583 int error, i;
1584
1585 #ifdef COMPAT_FREEBSD32
1586 if (SV_PROC_FLAG(p, SV_ILP32) != 0)
1587 return (get_proc_vector32(td, p, proc_vectorp, vsizep, type));
1588 #endif
1589 error = proc_read_mem(td, p, (vm_offset_t)(p->p_sysent->sv_psstrings),
1590 &pss, sizeof(pss));
1591 if (error != 0)
1592 return (error);
1593 switch (type) {
1594 case PROC_ARG:
1595 vptr = (vm_offset_t)pss.ps_argvstr;
1596 vsize = pss.ps_nargvstr;
1597 if (vsize > ARG_MAX)
1598 return (ENOEXEC);
1599 size = vsize * sizeof(char *);
1600 break;
1601 case PROC_ENV:
1602 vptr = (vm_offset_t)pss.ps_envstr;
1603 vsize = pss.ps_nenvstr;
1604 if (vsize > ARG_MAX)
1605 return (ENOEXEC);
1606 size = vsize * sizeof(char *);
1607 break;
1608 case PROC_AUX:
1609 /*
1610 * The aux array is just above env array on the stack. Check
1611 * that the address is naturally aligned.
1612 */
1613 vptr = (vm_offset_t)pss.ps_envstr + (pss.ps_nenvstr + 1)
1614 * sizeof(char *);
1615 #if __ELF_WORD_SIZE == 64
1616 if (vptr % sizeof(uint64_t) != 0)
1617 #else
1618 if (vptr % sizeof(uint32_t) != 0)
1619 #endif
1620 return (ENOEXEC);
1621 /*
1622 * We count the array size reading the aux vectors from the
1623 * stack until AT_NULL vector is returned. So (to keep the code
1624 * simple) we read the process stack twice: the first time here
1625 * to find the size and the second time when copying the vectors
1626 * to the allocated proc_vector.
1627 */
1628 for (ptr = vptr, i = 0; i < PROC_AUXV_MAX; i++) {
1629 error = proc_read_mem(td, p, ptr, &aux, sizeof(aux));
1630 if (error != 0)
1631 return (error);
1632 if (aux.a_type == AT_NULL)
1633 break;
1634 ptr += sizeof(aux);
1635 }
1636 /*
1637 * If the PROC_AUXV_MAX entries are iterated over, and we have
1638 * not reached AT_NULL, it is most likely we are reading wrong
1639 * data: either the process doesn't have auxv array or data has
1640 * been modified. Return the error in this case.
1641 */
1642 if (aux.a_type != AT_NULL)
1643 return (ENOEXEC);
1644 vsize = i + 1;
1645 size = vsize * sizeof(aux);
1646 break;
1647 default:
1648 KASSERT(0, ("Wrong proc vector type: %d", type));
1649 return (EINVAL); /* In case we are built without INVARIANTS. */
1650 }
1651 proc_vector = malloc(size, M_TEMP, M_WAITOK);
1652 if (proc_vector == NULL)
1653 return (ENOMEM);
1654 error = proc_read_mem(td, p, vptr, proc_vector, size);
1655 if (error != 0) {
1656 free(proc_vector, M_TEMP);
1657 return (error);
1658 }
1659 *proc_vectorp = proc_vector;
1660 *vsizep = vsize;
1661
1662 return (0);
1663 }
1664
1665 #define GET_PS_STRINGS_CHUNK_SZ 256 /* Chunk size (bytes) for ps_strings operations. */
1666
1667 static int
1668 get_ps_strings(struct thread *td, struct proc *p, struct sbuf *sb,
1669 enum proc_vector_type type)
1670 {
1671 size_t done, len, nchr, vsize;
1672 int error, i;
1673 char **proc_vector, *sptr;
1674 char pss_string[GET_PS_STRINGS_CHUNK_SZ];
1675
1676 PROC_ASSERT_HELD(p);
1677
1678 /*
1679 * We are not going to read more than 2 * (PATH_MAX + ARG_MAX) bytes.
1680 */
1681 nchr = 2 * (PATH_MAX + ARG_MAX);
1682
1683 error = get_proc_vector(td, p, &proc_vector, &vsize, type);
1684 if (error != 0)
1685 return (error);
1686 for (done = 0, i = 0; i < (int)vsize && done < nchr; i++) {
1687 /*
1688 * The program may have scribbled into its argv array, e.g. to
1689 * remove some arguments. If that has happened, break out
1690 * before trying to read from NULL.
1691 */
1692 if (proc_vector[i] == NULL)
1693 break;
1694 for (sptr = proc_vector[i]; ; sptr += GET_PS_STRINGS_CHUNK_SZ) {
1695 error = proc_read_string(td, p, sptr, pss_string,
1696 sizeof(pss_string));
1697 if (error != 0)
1698 goto done;
1699 len = strnlen(pss_string, GET_PS_STRINGS_CHUNK_SZ);
1700 if (done + len >= nchr)
1701 len = nchr - done - 1;
1702 sbuf_bcat(sb, pss_string, len);
1703 if (len != GET_PS_STRINGS_CHUNK_SZ)
1704 break;
1705 done += GET_PS_STRINGS_CHUNK_SZ;
1706 }
1707 sbuf_bcat(sb, "", 1);
1708 done += len + 1;
1709 }
1710 done:
1711 free(proc_vector, M_TEMP);
1712 return (error);
1713 }
1714
1715 int
1716 proc_getargv(struct thread *td, struct proc *p, struct sbuf *sb)
1717 {
1718
1719 return (get_ps_strings(curthread, p, sb, PROC_ARG));
1720 }
1721
1722 int
1723 proc_getenvv(struct thread *td, struct proc *p, struct sbuf *sb)
1724 {
1725
1726 return (get_ps_strings(curthread, p, sb, PROC_ENV));
1727 }
1728
1729 /*
1730 * This sysctl allows a process to retrieve the argument list or process
1731 * title for another process without groping around in the address space
1732 * of the other process. It also allow a process to set its own "process
1733 * title to a string of its own choice.
1734 */
1735 static int
1736 sysctl_kern_proc_args(SYSCTL_HANDLER_ARGS)
1737 {
1738 int *name = (int *)arg1;
1739 u_int namelen = arg2;
1740 struct pargs *newpa, *pa;
1741 struct proc *p;
1742 struct sbuf sb;
1743 int flags, error = 0, error2;
1744
1745 if (namelen != 1)
1746 return (EINVAL);
1747
1748 flags = PGET_CANSEE;
1749 if (req->newptr != NULL)
1750 flags |= PGET_ISCURRENT;
1751 error = pget((pid_t)name[0], flags, &p);
1752 if (error)
1753 return (error);
1754
1755 pa = p->p_args;
1756 if (pa != NULL) {
1757 pargs_hold(pa);
1758 PROC_UNLOCK(p);
1759 error = SYSCTL_OUT(req, pa->ar_args, pa->ar_length);
1760 pargs_drop(pa);
1761 } else if ((p->p_flag & (P_WEXIT | P_SYSTEM)) == 0) {
1762 _PHOLD(p);
1763 PROC_UNLOCK(p);
1764 sbuf_new_for_sysctl(&sb, NULL, GET_PS_STRINGS_CHUNK_SZ, req);
1765 error = proc_getargv(curthread, p, &sb);
1766 error2 = sbuf_finish(&sb);
1767 PRELE(p);
1768 sbuf_delete(&sb);
1769 if (error == 0 && error2 != 0)
1770 error = error2;
1771 } else {
1772 PROC_UNLOCK(p);
1773 }
1774 if (error != 0 || req->newptr == NULL)
1775 return (error);
1776
1777 if (req->newlen + sizeof(struct pargs) > ps_arg_cache_limit)
1778 return (ENOMEM);
1779 newpa = pargs_alloc(req->newlen);
1780 error = SYSCTL_IN(req, newpa->ar_args, req->newlen);
1781 if (error != 0) {
1782 pargs_free(newpa);
1783 return (error);
1784 }
1785 PROC_LOCK(p);
1786 pa = p->p_args;
1787 p->p_args = newpa;
1788 PROC_UNLOCK(p);
1789 pargs_drop(pa);
1790 return (0);
1791 }
1792
1793 /*
1794 * This sysctl allows a process to retrieve environment of another process.
1795 */
1796 static int
1797 sysctl_kern_proc_env(SYSCTL_HANDLER_ARGS)
1798 {
1799 int *name = (int *)arg1;
1800 u_int namelen = arg2;
1801 struct proc *p;
1802 struct sbuf sb;
1803 int error, error2;
1804
1805 if (namelen != 1)
1806 return (EINVAL);
1807
1808 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
1809 if (error != 0)
1810 return (error);
1811 if ((p->p_flag & P_SYSTEM) != 0) {
1812 PRELE(p);
1813 return (0);
1814 }
1815
1816 sbuf_new_for_sysctl(&sb, NULL, GET_PS_STRINGS_CHUNK_SZ, req);
1817 error = proc_getenvv(curthread, p, &sb);
1818 error2 = sbuf_finish(&sb);
1819 PRELE(p);
1820 sbuf_delete(&sb);
1821 return (error != 0 ? error : error2);
1822 }
1823
1824 /*
1825 * This sysctl allows a process to retrieve ELF auxiliary vector of
1826 * another process.
1827 */
1828 static int
1829 sysctl_kern_proc_auxv(SYSCTL_HANDLER_ARGS)
1830 {
1831 int *name = (int *)arg1;
1832 u_int namelen = arg2;
1833 struct proc *p;
1834 size_t vsize, size;
1835 char **auxv;
1836 int error;
1837
1838 if (namelen != 1)
1839 return (EINVAL);
1840
1841 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
1842 if (error != 0)
1843 return (error);
1844 if ((p->p_flag & P_SYSTEM) != 0) {
1845 PRELE(p);
1846 return (0);
1847 }
1848 error = get_proc_vector(curthread, p, &auxv, &vsize, PROC_AUX);
1849 if (error == 0) {
1850 #ifdef COMPAT_FREEBSD32
1851 if (SV_PROC_FLAG(p, SV_ILP32) != 0)
1852 size = vsize * sizeof(Elf32_Auxinfo);
1853 else
1854 #endif
1855 size = vsize * sizeof(Elf_Auxinfo);
1856 PRELE(p);
1857 error = SYSCTL_OUT(req, auxv, size);
1858 free(auxv, M_TEMP);
1859 } else {
1860 PRELE(p);
1861 }
1862 return (error);
1863 }
1864
1865 /*
1866 * This sysctl allows a process to retrieve the path of the executable for
1867 * itself or another process.
1868 */
1869 static int
1870 sysctl_kern_proc_pathname(SYSCTL_HANDLER_ARGS)
1871 {
1872 pid_t *pidp = (pid_t *)arg1;
1873 unsigned int arglen = arg2;
1874 struct proc *p;
1875 struct vnode *vp;
1876 char *retbuf, *freebuf;
1877 int error, vfslocked;
1878
1879 if (arglen != 1)
1880 return (EINVAL);
1881 if (*pidp == -1) { /* -1 means this process */
1882 p = req->td->td_proc;
1883 } else {
1884 error = pget(*pidp, PGET_CANSEE, &p);
1885 if (error != 0)
1886 return (error);
1887 }
1888
1889 vp = p->p_textvp;
1890 if (vp == NULL) {
1891 if (*pidp != -1)
1892 PROC_UNLOCK(p);
1893 return (0);
1894 }
1895 vref(vp);
1896 if (*pidp != -1)
1897 PROC_UNLOCK(p);
1898 error = vn_fullpath(req->td, vp, &retbuf, &freebuf);
1899 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
1900 vrele(vp);
1901 VFS_UNLOCK_GIANT(vfslocked);
1902 if (error)
1903 return (error);
1904 error = SYSCTL_OUT(req, retbuf, strlen(retbuf) + 1);
1905 free(freebuf, M_TEMP);
1906 return (error);
1907 }
1908
1909 static int
1910 sysctl_kern_proc_sv_name(SYSCTL_HANDLER_ARGS)
1911 {
1912 struct proc *p;
1913 char *sv_name;
1914 int *name;
1915 int namelen;
1916 int error;
1917
1918 namelen = arg2;
1919 if (namelen != 1)
1920 return (EINVAL);
1921
1922 name = (int *)arg1;
1923 error = pget((pid_t)name[0], PGET_CANSEE, &p);
1924 if (error != 0)
1925 return (error);
1926 sv_name = p->p_sysent->sv_name;
1927 PROC_UNLOCK(p);
1928 return (sysctl_handle_string(oidp, sv_name, 0, req));
1929 }
1930
1931 #ifdef KINFO_OVMENTRY_SIZE
1932 CTASSERT(sizeof(struct kinfo_ovmentry) == KINFO_OVMENTRY_SIZE);
1933 #endif
1934
1935 #ifdef COMPAT_FREEBSD7
1936 static int
1937 sysctl_kern_proc_ovmmap(SYSCTL_HANDLER_ARGS)
1938 {
1939 vm_map_entry_t entry, tmp_entry;
1940 unsigned int last_timestamp;
1941 char *fullpath, *freepath;
1942 struct kinfo_ovmentry *kve;
1943 struct vattr va;
1944 struct ucred *cred;
1945 int error, *name;
1946 struct vnode *vp;
1947 struct proc *p;
1948 vm_map_t map;
1949 struct vmspace *vm;
1950
1951 name = (int *)arg1;
1952 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
1953 if (error != 0)
1954 return (error);
1955 vm = vmspace_acquire_ref(p);
1956 if (vm == NULL) {
1957 PRELE(p);
1958 return (ESRCH);
1959 }
1960 kve = malloc(sizeof(*kve), M_TEMP, M_WAITOK);
1961
1962 map = &p->p_vmspace->vm_map; /* XXXRW: More locking required? */
1963 vm_map_lock_read(map);
1964 for (entry = map->header.next; entry != &map->header;
1965 entry = entry->next) {
1966 vm_object_t obj, tobj, lobj;
1967 vm_offset_t addr;
1968 int vfslocked;
1969
1970 if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
1971 continue;
1972
1973 bzero(kve, sizeof(*kve));
1974 kve->kve_structsize = sizeof(*kve);
1975
1976 kve->kve_private_resident = 0;
1977 obj = entry->object.vm_object;
1978 if (obj != NULL) {
1979 VM_OBJECT_LOCK(obj);
1980 if (obj->shadow_count == 1)
1981 kve->kve_private_resident =
1982 obj->resident_page_count;
1983 }
1984 kve->kve_resident = 0;
1985 addr = entry->start;
1986 while (addr < entry->end) {
1987 if (pmap_extract(map->pmap, addr))
1988 kve->kve_resident++;
1989 addr += PAGE_SIZE;
1990 }
1991
1992 for (lobj = tobj = obj; tobj; tobj = tobj->backing_object) {
1993 if (tobj != obj)
1994 VM_OBJECT_LOCK(tobj);
1995 if (lobj != obj)
1996 VM_OBJECT_UNLOCK(lobj);
1997 lobj = tobj;
1998 }
1999
2000 kve->kve_start = (void*)entry->start;
2001 kve->kve_end = (void*)entry->end;
2002 kve->kve_offset = (off_t)entry->offset;
2003
2004 if (entry->protection & VM_PROT_READ)
2005 kve->kve_protection |= KVME_PROT_READ;
2006 if (entry->protection & VM_PROT_WRITE)
2007 kve->kve_protection |= KVME_PROT_WRITE;
2008 if (entry->protection & VM_PROT_EXECUTE)
2009 kve->kve_protection |= KVME_PROT_EXEC;
2010
2011 if (entry->eflags & MAP_ENTRY_COW)
2012 kve->kve_flags |= KVME_FLAG_COW;
2013 if (entry->eflags & MAP_ENTRY_NEEDS_COPY)
2014 kve->kve_flags |= KVME_FLAG_NEEDS_COPY;
2015 if (entry->eflags & MAP_ENTRY_NOCOREDUMP)
2016 kve->kve_flags |= KVME_FLAG_NOCOREDUMP;
2017
2018 last_timestamp = map->timestamp;
2019 vm_map_unlock_read(map);
2020
2021 kve->kve_fileid = 0;
2022 kve->kve_fsid = 0;
2023 freepath = NULL;
2024 fullpath = "";
2025 if (lobj) {
2026 vp = NULL;
2027 switch (lobj->type) {
2028 case OBJT_DEFAULT:
2029 kve->kve_type = KVME_TYPE_DEFAULT;
2030 break;
2031 case OBJT_VNODE:
2032 kve->kve_type = KVME_TYPE_VNODE;
2033 vp = lobj->handle;
2034 vref(vp);
2035 break;
2036 case OBJT_SWAP:
2037 kve->kve_type = KVME_TYPE_SWAP;
2038 break;
2039 case OBJT_DEVICE:
2040 kve->kve_type = KVME_TYPE_DEVICE;
2041 break;
2042 case OBJT_PHYS:
2043 kve->kve_type = KVME_TYPE_PHYS;
2044 break;
2045 case OBJT_DEAD:
2046 kve->kve_type = KVME_TYPE_DEAD;
2047 break;
2048 case OBJT_SG:
2049 kve->kve_type = KVME_TYPE_SG;
2050 break;
2051 default:
2052 kve->kve_type = KVME_TYPE_UNKNOWN;
2053 break;
2054 }
2055 if (lobj != obj)
2056 VM_OBJECT_UNLOCK(lobj);
2057
2058 kve->kve_ref_count = obj->ref_count;
2059 kve->kve_shadow_count = obj->shadow_count;
2060 VM_OBJECT_UNLOCK(obj);
2061 if (vp != NULL) {
2062 vn_fullpath(curthread, vp, &fullpath,
2063 &freepath);
2064 cred = curthread->td_ucred;
2065 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
2066 vn_lock(vp, LK_SHARED | LK_RETRY);
2067 if (VOP_GETATTR(vp, &va, cred) == 0) {
2068 kve->kve_fileid = va.va_fileid;
2069 kve->kve_fsid = va.va_fsid;
2070 }
2071 vput(vp);
2072 VFS_UNLOCK_GIANT(vfslocked);
2073 }
2074 } else {
2075 kve->kve_type = KVME_TYPE_NONE;
2076 kve->kve_ref_count = 0;
2077 kve->kve_shadow_count = 0;
2078 }
2079
2080 strlcpy(kve->kve_path, fullpath, sizeof(kve->kve_path));
2081 if (freepath != NULL)
2082 free(freepath, M_TEMP);
2083
2084 error = SYSCTL_OUT(req, kve, sizeof(*kve));
2085 vm_map_lock_read(map);
2086 if (error)
2087 break;
2088 if (last_timestamp != map->timestamp) {
2089 vm_map_lookup_entry(map, addr - 1, &tmp_entry);
2090 entry = tmp_entry;
2091 }
2092 }
2093 vm_map_unlock_read(map);
2094 vmspace_free(vm);
2095 PRELE(p);
2096 free(kve, M_TEMP);
2097 return (error);
2098 }
2099 #endif /* COMPAT_FREEBSD7 */
2100
2101 #ifdef KINFO_VMENTRY_SIZE
2102 CTASSERT(sizeof(struct kinfo_vmentry) == KINFO_VMENTRY_SIZE);
2103 #endif
2104
2105 static int
2106 sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS)
2107 {
2108 vm_map_entry_t entry, tmp_entry;
2109 unsigned int last_timestamp;
2110 char *fullpath, *freepath;
2111 struct kinfo_vmentry *kve;
2112 struct vattr va;
2113 struct ucred *cred;
2114 int error, *name;
2115 struct vnode *vp;
2116 struct proc *p;
2117 struct vmspace *vm;
2118 vm_map_t map;
2119
2120 name = (int *)arg1;
2121 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
2122 if (error != 0)
2123 return (error);
2124 vm = vmspace_acquire_ref(p);
2125 if (vm == NULL) {
2126 PRELE(p);
2127 return (ESRCH);
2128 }
2129 kve = malloc(sizeof(*kve), M_TEMP, M_WAITOK);
2130
2131 map = &vm->vm_map; /* XXXRW: More locking required? */
2132 vm_map_lock_read(map);
2133 for (entry = map->header.next; entry != &map->header;
2134 entry = entry->next) {
2135 vm_object_t obj, tobj, lobj;
2136 vm_offset_t addr;
2137 vm_paddr_t locked_pa;
2138 int vfslocked, mincoreinfo;
2139
2140 if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
2141 continue;
2142
2143 bzero(kve, sizeof(*kve));
2144
2145 kve->kve_private_resident = 0;
2146 obj = entry->object.vm_object;
2147 if (obj != NULL) {
2148 VM_OBJECT_LOCK(obj);
2149 if (obj->shadow_count == 1)
2150 kve->kve_private_resident =
2151 obj->resident_page_count;
2152 }
2153 kve->kve_resident = 0;
2154 addr = entry->start;
2155 while (addr < entry->end) {
2156 locked_pa = 0;
2157 mincoreinfo = pmap_mincore(map->pmap, addr, &locked_pa);
2158 if (locked_pa != 0)
2159 vm_page_unlock(PHYS_TO_VM_PAGE(locked_pa));
2160 if (mincoreinfo & MINCORE_INCORE)
2161 kve->kve_resident++;
2162 if (mincoreinfo & MINCORE_SUPER)
2163 kve->kve_flags |= KVME_FLAG_SUPER;
2164 addr += PAGE_SIZE;
2165 }
2166
2167 for (lobj = tobj = obj; tobj; tobj = tobj->backing_object) {
2168 if (tobj != obj)
2169 VM_OBJECT_LOCK(tobj);
2170 if (lobj != obj)
2171 VM_OBJECT_UNLOCK(lobj);
2172 lobj = tobj;
2173 }
2174
2175 kve->kve_start = entry->start;
2176 kve->kve_end = entry->end;
2177 kve->kve_offset = entry->offset;
2178
2179 if (entry->protection & VM_PROT_READ)
2180 kve->kve_protection |= KVME_PROT_READ;
2181 if (entry->protection & VM_PROT_WRITE)
2182 kve->kve_protection |= KVME_PROT_WRITE;
2183 if (entry->protection & VM_PROT_EXECUTE)
2184 kve->kve_protection |= KVME_PROT_EXEC;
2185
2186 if (entry->eflags & MAP_ENTRY_COW)
2187 kve->kve_flags |= KVME_FLAG_COW;
2188 if (entry->eflags & MAP_ENTRY_NEEDS_COPY)
2189 kve->kve_flags |= KVME_FLAG_NEEDS_COPY;
2190 if (entry->eflags & MAP_ENTRY_NOCOREDUMP)
2191 kve->kve_flags |= KVME_FLAG_NOCOREDUMP;
2192 if (entry->eflags & MAP_ENTRY_GROWS_UP)
2193 kve->kve_flags |= KVME_FLAG_GROWS_UP;
2194 if (entry->eflags & MAP_ENTRY_GROWS_DOWN)
2195 kve->kve_flags |= KVME_FLAG_GROWS_DOWN;
2196
2197 last_timestamp = map->timestamp;
2198 vm_map_unlock_read(map);
2199
2200 freepath = NULL;
2201 fullpath = "";
2202 if (lobj) {
2203 vp = NULL;
2204 switch (lobj->type) {
2205 case OBJT_DEFAULT:
2206 kve->kve_type = KVME_TYPE_DEFAULT;
2207 break;
2208 case OBJT_VNODE:
2209 kve->kve_type = KVME_TYPE_VNODE;
2210 vp = lobj->handle;
2211 vref(vp);
2212 break;
2213 case OBJT_SWAP:
2214 kve->kve_type = KVME_TYPE_SWAP;
2215 break;
2216 case OBJT_DEVICE:
2217 kve->kve_type = KVME_TYPE_DEVICE;
2218 break;
2219 case OBJT_PHYS:
2220 kve->kve_type = KVME_TYPE_PHYS;
2221 break;
2222 case OBJT_DEAD:
2223 kve->kve_type = KVME_TYPE_DEAD;
2224 break;
2225 case OBJT_SG:
2226 kve->kve_type = KVME_TYPE_SG;
2227 break;
2228 default:
2229 kve->kve_type = KVME_TYPE_UNKNOWN;
2230 break;
2231 }
2232 if (lobj != obj)
2233 VM_OBJECT_UNLOCK(lobj);
2234
2235 kve->kve_ref_count = obj->ref_count;
2236 kve->kve_shadow_count = obj->shadow_count;
2237 VM_OBJECT_UNLOCK(obj);
2238 if (vp != NULL) {
2239 vn_fullpath(curthread, vp, &fullpath,
2240 &freepath);
2241 kve->kve_vn_type = vntype_to_kinfo(vp->v_type);
2242 cred = curthread->td_ucred;
2243 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
2244 vn_lock(vp, LK_SHARED | LK_RETRY);
2245 if (VOP_GETATTR(vp, &va, cred) == 0) {
2246 kve->kve_vn_fileid = va.va_fileid;
2247 kve->kve_vn_fsid = va.va_fsid;
2248 kve->kve_vn_mode =
2249 MAKEIMODE(va.va_type, va.va_mode);
2250 kve->kve_vn_size = va.va_size;
2251 kve->kve_vn_rdev = va.va_rdev;
2252 kve->kve_status = KF_ATTR_VALID;
2253 }
2254 vput(vp);
2255 VFS_UNLOCK_GIANT(vfslocked);
2256 }
2257 } else {
2258 kve->kve_type = KVME_TYPE_NONE;
2259 kve->kve_ref_count = 0;
2260 kve->kve_shadow_count = 0;
2261 }
2262
2263 strlcpy(kve->kve_path, fullpath, sizeof(kve->kve_path));
2264 if (freepath != NULL)
2265 free(freepath, M_TEMP);
2266
2267 /* Pack record size down */
2268 kve->kve_structsize = offsetof(struct kinfo_vmentry, kve_path) +
2269 strlen(kve->kve_path) + 1;
2270 kve->kve_structsize = roundup(kve->kve_structsize,
2271 sizeof(uint64_t));
2272 error = SYSCTL_OUT(req, kve, kve->kve_structsize);
2273 vm_map_lock_read(map);
2274 if (error)
2275 break;
2276 if (last_timestamp != map->timestamp) {
2277 vm_map_lookup_entry(map, addr - 1, &tmp_entry);
2278 entry = tmp_entry;
2279 }
2280 }
2281 vm_map_unlock_read(map);
2282 vmspace_free(vm);
2283 PRELE(p);
2284 free(kve, M_TEMP);
2285 return (error);
2286 }
2287
2288 #if defined(STACK) || defined(DDB)
2289 static int
2290 sysctl_kern_proc_kstack(SYSCTL_HANDLER_ARGS)
2291 {
2292 struct kinfo_kstack *kkstp;
2293 int error, i, *name, numthreads;
2294 lwpid_t *lwpidarray;
2295 struct thread *td;
2296 struct stack *st;
2297 struct sbuf sb;
2298 struct proc *p;
2299
2300 name = (int *)arg1;
2301 error = pget((pid_t)name[0], PGET_NOTINEXEC | PGET_WANTREAD, &p);
2302 if (error != 0)
2303 return (error);
2304
2305 kkstp = malloc(sizeof(*kkstp), M_TEMP, M_WAITOK);
2306 st = stack_create();
2307
2308 lwpidarray = NULL;
2309 numthreads = 0;
2310 PROC_LOCK(p);
2311 repeat:
2312 if (numthreads < p->p_numthreads) {
2313 if (lwpidarray != NULL) {
2314 free(lwpidarray, M_TEMP);
2315 lwpidarray = NULL;
2316 }
2317 numthreads = p->p_numthreads;
2318 PROC_UNLOCK(p);
2319 lwpidarray = malloc(sizeof(*lwpidarray) * numthreads, M_TEMP,
2320 M_WAITOK | M_ZERO);
2321 PROC_LOCK(p);
2322 goto repeat;
2323 }
2324 i = 0;
2325
2326 /*
2327 * XXXRW: During the below loop, execve(2) and countless other sorts
2328 * of changes could have taken place. Should we check to see if the
2329 * vmspace has been replaced, or the like, in order to prevent
2330 * giving a snapshot that spans, say, execve(2), with some threads
2331 * before and some after? Among other things, the credentials could
2332 * have changed, in which case the right to extract debug info might
2333 * no longer be assured.
2334 */
2335 FOREACH_THREAD_IN_PROC(p, td) {
2336 KASSERT(i < numthreads,
2337 ("sysctl_kern_proc_kstack: numthreads"));
2338 lwpidarray[i] = td->td_tid;
2339 i++;
2340 }
2341 numthreads = i;
2342 for (i = 0; i < numthreads; i++) {
2343 td = thread_find(p, lwpidarray[i]);
2344 if (td == NULL) {
2345 continue;
2346 }
2347 bzero(kkstp, sizeof(*kkstp));
2348 (void)sbuf_new(&sb, kkstp->kkst_trace,
2349 sizeof(kkstp->kkst_trace), SBUF_FIXEDLEN);
2350 thread_lock(td);
2351 kkstp->kkst_tid = td->td_tid;
2352 if (TD_IS_SWAPPED(td))
2353 kkstp->kkst_state = KKST_STATE_SWAPPED;
2354 else if (TD_IS_RUNNING(td))
2355 kkstp->kkst_state = KKST_STATE_RUNNING;
2356 else {
2357 kkstp->kkst_state = KKST_STATE_STACKOK;
2358 stack_save_td(st, td);
2359 }
2360 thread_unlock(td);
2361 PROC_UNLOCK(p);
2362 stack_sbuf_print(&sb, st);
2363 sbuf_finish(&sb);
2364 sbuf_delete(&sb);
2365 error = SYSCTL_OUT(req, kkstp, sizeof(*kkstp));
2366 PROC_LOCK(p);
2367 if (error)
2368 break;
2369 }
2370 _PRELE(p);
2371 PROC_UNLOCK(p);
2372 if (lwpidarray != NULL)
2373 free(lwpidarray, M_TEMP);
2374 stack_destroy(st);
2375 free(kkstp, M_TEMP);
2376 return (error);
2377 }
2378 #endif
2379
2380 /*
2381 * This sysctl allows a process to retrieve the full list of groups from
2382 * itself or another process.
2383 */
2384 static int
2385 sysctl_kern_proc_groups(SYSCTL_HANDLER_ARGS)
2386 {
2387 pid_t *pidp = (pid_t *)arg1;
2388 unsigned int arglen = arg2;
2389 struct proc *p;
2390 struct ucred *cred;
2391 int error;
2392
2393 if (arglen != 1)
2394 return (EINVAL);
2395 if (*pidp == -1) { /* -1 means this process */
2396 p = req->td->td_proc;
2397 } else {
2398 error = pget(*pidp, PGET_CANSEE, &p);
2399 if (error != 0)
2400 return (error);
2401 }
2402
2403 cred = crhold(p->p_ucred);
2404 if (*pidp != -1)
2405 PROC_UNLOCK(p);
2406
2407 error = SYSCTL_OUT(req, cred->cr_groups,
2408 cred->cr_ngroups * sizeof(gid_t));
2409 crfree(cred);
2410 return (error);
2411 }
2412
2413 /*
2414 * This sysctl allows a process to retrieve or/and set the resource limit for
2415 * another process.
2416 */
2417 static int
2418 sysctl_kern_proc_rlimit(SYSCTL_HANDLER_ARGS)
2419 {
2420 int *name = (int *)arg1;
2421 u_int namelen = arg2;
2422 struct rlimit rlim;
2423 struct proc *p;
2424 u_int which;
2425 int flags, error;
2426
2427 if (namelen != 2)
2428 return (EINVAL);
2429
2430 which = (u_int)name[1];
2431 if (which >= RLIM_NLIMITS)
2432 return (EINVAL);
2433
2434 if (req->newptr != NULL && req->newlen != sizeof(rlim))
2435 return (EINVAL);
2436
2437 flags = PGET_HOLD | PGET_NOTWEXIT;
2438 if (req->newptr != NULL)
2439 flags |= PGET_CANDEBUG;
2440 else
2441 flags |= PGET_CANSEE;
2442 error = pget((pid_t)name[0], flags, &p);
2443 if (error != 0)
2444 return (error);
2445
2446 /*
2447 * Retrieve limit.
2448 */
2449 if (req->oldptr != NULL) {
2450 PROC_LOCK(p);
2451 lim_rlimit(p, which, &rlim);
2452 PROC_UNLOCK(p);
2453 }
2454 error = SYSCTL_OUT(req, &rlim, sizeof(rlim));
2455 if (error != 0)
2456 goto errout;
2457
2458 /*
2459 * Set limit.
2460 */
2461 if (req->newptr != NULL) {
2462 error = SYSCTL_IN(req, &rlim, sizeof(rlim));
2463 if (error == 0)
2464 error = kern_proc_setrlimit(curthread, p, which, &rlim);
2465 }
2466
2467 errout:
2468 PRELE(p);
2469 return (error);
2470 }
2471
2472 /*
2473 * This sysctl allows a process to retrieve ps_strings structure location of
2474 * another process.
2475 */
2476 static int
2477 sysctl_kern_proc_ps_strings(SYSCTL_HANDLER_ARGS)
2478 {
2479 int *name = (int *)arg1;
2480 u_int namelen = arg2;
2481 struct proc *p;
2482 vm_offset_t ps_strings;
2483 int error;
2484 #ifdef COMPAT_FREEBSD32
2485 uint32_t ps_strings32;
2486 #endif
2487
2488 if (namelen != 1)
2489 return (EINVAL);
2490
2491 error = pget((pid_t)name[0], PGET_CANDEBUG, &p);
2492 if (error != 0)
2493 return (error);
2494 #ifdef COMPAT_FREEBSD32
2495 if ((req->flags & SCTL_MASK32) != 0) {
2496 /*
2497 * We return 0 if the 32 bit emulation request is for a 64 bit
2498 * process.
2499 */
2500 ps_strings32 = SV_PROC_FLAG(p, SV_ILP32) != 0 ?
2501 PTROUT(p->p_sysent->sv_psstrings) : 0;
2502 PROC_UNLOCK(p);
2503 error = SYSCTL_OUT(req, &ps_strings32, sizeof(ps_strings32));
2504 return (error);
2505 }
2506 #endif
2507 ps_strings = p->p_sysent->sv_psstrings;
2508 PROC_UNLOCK(p);
2509 error = SYSCTL_OUT(req, &ps_strings, sizeof(ps_strings));
2510 return (error);
2511 }
2512
2513 /*
2514 * This sysctl allows a process to retrieve umask of another process.
2515 */
2516 static int
2517 sysctl_kern_proc_umask(SYSCTL_HANDLER_ARGS)
2518 {
2519 int *name = (int *)arg1;
2520 u_int namelen = arg2;
2521 struct proc *p;
2522 int error;
2523 u_short fd_cmask;
2524
2525 if (namelen != 1)
2526 return (EINVAL);
2527
2528 error = pget((pid_t)name[0], PGET_WANTREAD, &p);
2529 if (error != 0)
2530 return (error);
2531
2532 FILEDESC_SLOCK(p->p_fd);
2533 fd_cmask = p->p_fd->fd_cmask;
2534 FILEDESC_SUNLOCK(p->p_fd);
2535 PRELE(p);
2536 error = SYSCTL_OUT(req, &fd_cmask, sizeof(fd_cmask));
2537 return (error);
2538 }
2539
2540 /*
2541 * This sysctl allows a process to set and retrieve binary osreldate of
2542 * another process.
2543 */
2544 static int
2545 sysctl_kern_proc_osrel(SYSCTL_HANDLER_ARGS)
2546 {
2547 int *name = (int *)arg1;
2548 u_int namelen = arg2;
2549 struct proc *p;
2550 int flags, error, osrel;
2551
2552 if (namelen != 1)
2553 return (EINVAL);
2554
2555 if (req->newptr != NULL && req->newlen != sizeof(osrel))
2556 return (EINVAL);
2557
2558 flags = PGET_HOLD | PGET_NOTWEXIT;
2559 if (req->newptr != NULL)
2560 flags |= PGET_CANDEBUG;
2561 else
2562 flags |= PGET_CANSEE;
2563 error = pget((pid_t)name[0], flags, &p);
2564 if (error != 0)
2565 return (error);
2566
2567 error = SYSCTL_OUT(req, &p->p_osrel, sizeof(p->p_osrel));
2568 if (error != 0)
2569 goto errout;
2570
2571 if (req->newptr != NULL) {
2572 error = SYSCTL_IN(req, &osrel, sizeof(osrel));
2573 if (error != 0)
2574 goto errout;
2575 if (osrel < 0) {
2576 error = EINVAL;
2577 goto errout;
2578 }
2579 p->p_osrel = osrel;
2580 }
2581 errout:
2582 PRELE(p);
2583 return (error);
2584 }
2585
2586 SYSCTL_NODE(_kern, KERN_PROC, proc, CTLFLAG_RD, 0, "Process table");
2587
2588 SYSCTL_PROC(_kern_proc, KERN_PROC_ALL, all, CTLFLAG_RD|CTLTYPE_STRUCT|
2589 CTLFLAG_MPSAFE, 0, 0, sysctl_kern_proc, "S,proc",
2590 "Return entire process table");
2591
2592 static SYSCTL_NODE(_kern_proc, KERN_PROC_GID, gid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2593 sysctl_kern_proc, "Process table");
2594
2595 static SYSCTL_NODE(_kern_proc, KERN_PROC_PGRP, pgrp, CTLFLAG_RD | CTLFLAG_MPSAFE,
2596 sysctl_kern_proc, "Process table");
2597
2598 static SYSCTL_NODE(_kern_proc, KERN_PROC_RGID, rgid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2599 sysctl_kern_proc, "Process table");
2600
2601 static SYSCTL_NODE(_kern_proc, KERN_PROC_SESSION, sid, CTLFLAG_RD |
2602 CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2603
2604 static SYSCTL_NODE(_kern_proc, KERN_PROC_TTY, tty, CTLFLAG_RD | CTLFLAG_MPSAFE,
2605 sysctl_kern_proc, "Process table");
2606
2607 static SYSCTL_NODE(_kern_proc, KERN_PROC_UID, uid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2608 sysctl_kern_proc, "Process table");
2609
2610 static SYSCTL_NODE(_kern_proc, KERN_PROC_RUID, ruid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2611 sysctl_kern_proc, "Process table");
2612
2613 static SYSCTL_NODE(_kern_proc, KERN_PROC_PID, pid, CTLFLAG_RD | CTLFLAG_MPSAFE,
2614 sysctl_kern_proc, "Process table");
2615
2616 static SYSCTL_NODE(_kern_proc, KERN_PROC_PROC, proc, CTLFLAG_RD | CTLFLAG_MPSAFE,
2617 sysctl_kern_proc, "Return process table, no threads");
2618
2619 static SYSCTL_NODE(_kern_proc, KERN_PROC_ARGS, args,
2620 CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_MPSAFE,
2621 sysctl_kern_proc_args, "Process argument list");
2622
2623 static SYSCTL_NODE(_kern_proc, KERN_PROC_ENV, env, CTLFLAG_RD | CTLFLAG_MPSAFE,
2624 sysctl_kern_proc_env, "Process environment");
2625
2626 static SYSCTL_NODE(_kern_proc, KERN_PROC_AUXV, auxv, CTLFLAG_RD |
2627 CTLFLAG_MPSAFE, sysctl_kern_proc_auxv, "Process ELF auxiliary vector");
2628
2629 static SYSCTL_NODE(_kern_proc, KERN_PROC_PATHNAME, pathname, CTLFLAG_RD |
2630 CTLFLAG_MPSAFE, sysctl_kern_proc_pathname, "Process executable path");
2631
2632 static SYSCTL_NODE(_kern_proc, KERN_PROC_SV_NAME, sv_name, CTLFLAG_RD |
2633 CTLFLAG_MPSAFE, sysctl_kern_proc_sv_name,
2634 "Process syscall vector name (ABI type)");
2635
2636 static SYSCTL_NODE(_kern_proc, (KERN_PROC_GID | KERN_PROC_INC_THREAD), gid_td,
2637 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2638
2639 static SYSCTL_NODE(_kern_proc, (KERN_PROC_PGRP | KERN_PROC_INC_THREAD), pgrp_td,
2640 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2641
2642 static SYSCTL_NODE(_kern_proc, (KERN_PROC_RGID | KERN_PROC_INC_THREAD), rgid_td,
2643 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2644
2645 static SYSCTL_NODE(_kern_proc, (KERN_PROC_SESSION | KERN_PROC_INC_THREAD),
2646 sid_td, CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2647
2648 static SYSCTL_NODE(_kern_proc, (KERN_PROC_TTY | KERN_PROC_INC_THREAD), tty_td,
2649 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2650
2651 static SYSCTL_NODE(_kern_proc, (KERN_PROC_UID | KERN_PROC_INC_THREAD), uid_td,
2652 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2653
2654 static SYSCTL_NODE(_kern_proc, (KERN_PROC_RUID | KERN_PROC_INC_THREAD), ruid_td,
2655 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2656
2657 static SYSCTL_NODE(_kern_proc, (KERN_PROC_PID | KERN_PROC_INC_THREAD), pid_td,
2658 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
2659
2660 static SYSCTL_NODE(_kern_proc, (KERN_PROC_PROC | KERN_PROC_INC_THREAD), proc_td,
2661 CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc,
2662 "Return process table, no threads");
2663
2664 #ifdef COMPAT_FREEBSD7
2665 static SYSCTL_NODE(_kern_proc, KERN_PROC_OVMMAP, ovmmap, CTLFLAG_RD |
2666 CTLFLAG_MPSAFE, sysctl_kern_proc_ovmmap, "Old Process vm map entries");
2667 #endif
2668
2669 static SYSCTL_NODE(_kern_proc, KERN_PROC_VMMAP, vmmap, CTLFLAG_RD |
2670 CTLFLAG_MPSAFE, sysctl_kern_proc_vmmap, "Process vm map entries");
2671
2672 #if defined(STACK) || defined(DDB)
2673 static SYSCTL_NODE(_kern_proc, KERN_PROC_KSTACK, kstack, CTLFLAG_RD |
2674 CTLFLAG_MPSAFE, sysctl_kern_proc_kstack, "Process kernel stacks");
2675 #endif
2676
2677 static SYSCTL_NODE(_kern_proc, KERN_PROC_GROUPS, groups, CTLFLAG_RD |
2678 CTLFLAG_MPSAFE, sysctl_kern_proc_groups, "Process groups");
2679
2680 static SYSCTL_NODE(_kern_proc, KERN_PROC_RLIMIT, rlimit, CTLFLAG_RW |
2681 CTLFLAG_ANYBODY | CTLFLAG_MPSAFE, sysctl_kern_proc_rlimit,
2682 "Process resource limits");
2683
2684 static SYSCTL_NODE(_kern_proc, KERN_PROC_PS_STRINGS, ps_strings, CTLFLAG_RD |
2685 CTLFLAG_MPSAFE, sysctl_kern_proc_ps_strings,
2686 "Process ps_strings location");
2687
2688 static SYSCTL_NODE(_kern_proc, KERN_PROC_UMASK, umask, CTLFLAG_RD |
2689 CTLFLAG_MPSAFE, sysctl_kern_proc_umask, "Process umask");
2690
2691 static SYSCTL_NODE(_kern_proc, KERN_PROC_OSREL, osrel, CTLFLAG_RW |
2692 CTLFLAG_ANYBODY | CTLFLAG_MPSAFE, sysctl_kern_proc_osrel,
2693 "Process binary osreldate");
Cache object: a2acae964638f55c54b458125fbdd1f9
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