kern_proc.c revision 162452
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 * $FreeBSD: head/sys/kern/kern_proc.c 162452 2006-09-19 19:25:11Z mbr $ 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: head/sys/kern/kern_proc.c 162452 2006-09-19 19:25:11Z mbr $"); 35 36#include "opt_ktrace.h" 37#include "opt_kstack_pages.h" 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/kernel.h> 42#include <sys/lock.h> 43#include <sys/malloc.h> 44#include <sys/mutex.h> 45#include <sys/proc.h> 46#include <sys/refcount.h> 47#include <sys/sysent.h> 48#include <sys/sched.h> 49#include <sys/smp.h> 50#include <sys/sysctl.h> 51#include <sys/filedesc.h> 52#include <sys/tty.h> 53#include <sys/signalvar.h> 54#include <sys/sx.h> 55#include <sys/user.h> 56#include <sys/jail.h> 57#include <sys/vnode.h> 58#ifdef KTRACE 59#include <sys/uio.h> 60#include <sys/ktrace.h> 61#endif 62 63#include <vm/vm.h> 64#include <vm/vm_extern.h> 65#include <vm/pmap.h> 66#include <vm/vm_map.h> 67#include <vm/uma.h> 68 69MALLOC_DEFINE(M_PGRP, "pgrp", "process group header"); 70MALLOC_DEFINE(M_SESSION, "session", "session header"); 71static MALLOC_DEFINE(M_PROC, "proc", "Proc structures"); 72MALLOC_DEFINE(M_SUBPROC, "subproc", "Proc sub-structures"); 73 74static void doenterpgrp(struct proc *, struct pgrp *); 75static void orphanpg(struct pgrp *pg); 76static void fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp); 77static void fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp); 78static void pgadjustjobc(struct pgrp *pgrp, int entering); 79static void pgdelete(struct pgrp *); 80static int proc_ctor(void *mem, int size, void *arg, int flags); 81static void proc_dtor(void *mem, int size, void *arg); 82static int proc_init(void *mem, int size, int flags); 83static void proc_fini(void *mem, int size); 84 85/* 86 * Other process lists 87 */ 88struct pidhashhead *pidhashtbl; 89u_long pidhash; 90struct pgrphashhead *pgrphashtbl; 91u_long pgrphash; 92struct proclist allproc; 93struct proclist zombproc; 94struct sx allproc_lock; 95struct sx proctree_lock; 96struct mtx ppeers_lock; 97uma_zone_t proc_zone; 98uma_zone_t ithread_zone; 99 100int kstack_pages = KSTACK_PAGES; 101SYSCTL_INT(_kern, OID_AUTO, kstack_pages, CTLFLAG_RD, &kstack_pages, 0, ""); 102 103CTASSERT(sizeof(struct kinfo_proc) == KINFO_PROC_SIZE); 104 105/* 106 * Initialize global process hashing structures. 107 */ 108void 109procinit() 110{ 111 112 sx_init(&allproc_lock, "allproc"); 113 sx_init(&proctree_lock, "proctree"); 114 mtx_init(&ppeers_lock, "p_peers", NULL, MTX_DEF); 115 LIST_INIT(&allproc); 116 LIST_INIT(&zombproc); 117 pidhashtbl = hashinit(maxproc / 4, M_PROC, &pidhash); 118 pgrphashtbl = hashinit(maxproc / 4, M_PROC, &pgrphash); 119 proc_zone = uma_zcreate("PROC", sched_sizeof_proc(), 120 proc_ctor, proc_dtor, proc_init, proc_fini, 121 UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 122 uihashinit(); 123} 124 125/* 126 * Prepare a proc for use. 127 */ 128static int 129proc_ctor(void *mem, int size, void *arg, int flags) 130{ 131 struct proc *p; 132 133 p = (struct proc *)mem; 134 return (0); 135} 136 137/* 138 * Reclaim a proc after use. 139 */ 140static void 141proc_dtor(void *mem, int size, void *arg) 142{ 143 struct proc *p; 144 struct thread *td; 145#ifdef INVARIANTS 146 struct ksegrp *kg; 147#endif 148 149 /* INVARIANTS checks go here */ 150 p = (struct proc *)mem; 151 td = FIRST_THREAD_IN_PROC(p); 152#ifdef INVARIANTS 153 KASSERT((p->p_numthreads == 1), 154 ("bad number of threads in exiting process")); 155 KASSERT((p->p_numksegrps == 1), ("free proc with > 1 ksegrp")); 156 KASSERT((td != NULL), ("proc_dtor: bad thread pointer")); 157 kg = FIRST_KSEGRP_IN_PROC(p); 158 KASSERT((kg != NULL), ("proc_dtor: bad kg pointer")); 159 KASSERT(STAILQ_EMPTY(&p->p_ktr), ("proc_dtor: non-empty p_ktr")); 160#endif 161 162 /* Dispose of an alternate kstack, if it exists. 163 * XXX What if there are more than one thread in the proc? 164 * The first thread in the proc is special and not 165 * freed, so you gotta do this here. 166 */ 167 if (((p->p_flag & P_KTHREAD) != 0) && (td->td_altkstack != 0)) 168 vm_thread_dispose_altkstack(td); 169 if (p->p_ksi != NULL) 170 KASSERT(! KSI_ONQ(p->p_ksi), ("SIGCHLD queue")); 171} 172 173/* 174 * Initialize type-stable parts of a proc (when newly created). 175 */ 176static int 177proc_init(void *mem, int size, int flags) 178{ 179 struct proc *p; 180 struct thread *td; 181 struct ksegrp *kg; 182 183 p = (struct proc *)mem; 184 p->p_sched = (struct p_sched *)&p[1]; 185 td = thread_alloc(); 186 kg = ksegrp_alloc(); 187 bzero(&p->p_mtx, sizeof(struct mtx)); 188 mtx_init(&p->p_mtx, "process lock", NULL, MTX_DEF | MTX_DUPOK); 189 p->p_stats = pstats_alloc(); 190 proc_linkup(p, kg, td); 191 sched_newproc(p, kg, td); 192 return (0); 193} 194 195/* 196 * UMA should ensure that this function is never called. 197 * Freeing a proc structure would violate type stability. 198 */ 199static void 200proc_fini(void *mem, int size) 201{ 202#ifdef notnow 203 struct proc *p; 204 205 p = (struct proc *)mem; 206 pstats_free(p->p_stats); 207 ksegrp_free(FIRST_KSEGRP_IN_PROC(p)); 208 thread_free(FIRST_THREAD_IN_PROC(p)); 209 mtx_destroy(&p->p_mtx); 210 if (p->p_ksi != NULL) 211 ksiginfo_free(p->p_ksi); 212#else 213 panic("proc reclaimed"); 214#endif 215} 216 217/* 218 * Is p an inferior of the current process? 219 */ 220int 221inferior(p) 222 register struct proc *p; 223{ 224 225 sx_assert(&proctree_lock, SX_LOCKED); 226 for (; p != curproc; p = p->p_pptr) 227 if (p->p_pid == 0) 228 return (0); 229 return (1); 230} 231 232/* 233 * Locate a process by number; return only "live" processes -- i.e., neither 234 * zombies nor newly born but incompletely initialized processes. By not 235 * returning processes in the PRS_NEW state, we allow callers to avoid 236 * testing for that condition to avoid dereferencing p_ucred, et al. 237 */ 238struct proc * 239pfind(pid) 240 register pid_t pid; 241{ 242 register struct proc *p; 243 244 sx_slock(&allproc_lock); 245 LIST_FOREACH(p, PIDHASH(pid), p_hash) 246 if (p->p_pid == pid) { 247 if (p->p_state == PRS_NEW) { 248 p = NULL; 249 break; 250 } 251 PROC_LOCK(p); 252 break; 253 } 254 sx_sunlock(&allproc_lock); 255 return (p); 256} 257 258/* 259 * Locate a process group by number. 260 * The caller must hold proctree_lock. 261 */ 262struct pgrp * 263pgfind(pgid) 264 register pid_t pgid; 265{ 266 register struct pgrp *pgrp; 267 268 sx_assert(&proctree_lock, SX_LOCKED); 269 270 LIST_FOREACH(pgrp, PGRPHASH(pgid), pg_hash) { 271 if (pgrp->pg_id == pgid) { 272 PGRP_LOCK(pgrp); 273 return (pgrp); 274 } 275 } 276 return (NULL); 277} 278 279/* 280 * Create a new process group. 281 * pgid must be equal to the pid of p. 282 * Begin a new session if required. 283 */ 284int 285enterpgrp(p, pgid, pgrp, sess) 286 register struct proc *p; 287 pid_t pgid; 288 struct pgrp *pgrp; 289 struct session *sess; 290{ 291 struct pgrp *pgrp2; 292 293 sx_assert(&proctree_lock, SX_XLOCKED); 294 295 KASSERT(pgrp != NULL, ("enterpgrp: pgrp == NULL")); 296 KASSERT(p->p_pid == pgid, 297 ("enterpgrp: new pgrp and pid != pgid")); 298 299 pgrp2 = pgfind(pgid); 300 301 KASSERT(pgrp2 == NULL, 302 ("enterpgrp: pgrp with pgid exists")); 303 KASSERT(!SESS_LEADER(p), 304 ("enterpgrp: session leader attempted setpgrp")); 305 306 mtx_init(&pgrp->pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK); 307 308 if (sess != NULL) { 309 /* 310 * new session 311 */ 312 mtx_init(&sess->s_mtx, "session", NULL, MTX_DEF); 313 PROC_LOCK(p); 314 p->p_flag &= ~P_CONTROLT; 315 PROC_UNLOCK(p); 316 PGRP_LOCK(pgrp); 317 sess->s_leader = p; 318 sess->s_sid = p->p_pid; 319 sess->s_count = 1; 320 sess->s_ttyvp = NULL; 321 sess->s_ttyp = NULL; 322 bcopy(p->p_session->s_login, sess->s_login, 323 sizeof(sess->s_login)); 324 pgrp->pg_session = sess; 325 KASSERT(p == curproc, 326 ("enterpgrp: mksession and p != curproc")); 327 } else { 328 pgrp->pg_session = p->p_session; 329 SESS_LOCK(pgrp->pg_session); 330 pgrp->pg_session->s_count++; 331 SESS_UNLOCK(pgrp->pg_session); 332 PGRP_LOCK(pgrp); 333 } 334 pgrp->pg_id = pgid; 335 LIST_INIT(&pgrp->pg_members); 336 337 /* 338 * As we have an exclusive lock of proctree_lock, 339 * this should not deadlock. 340 */ 341 LIST_INSERT_HEAD(PGRPHASH(pgid), pgrp, pg_hash); 342 pgrp->pg_jobc = 0; 343 SLIST_INIT(&pgrp->pg_sigiolst); 344 PGRP_UNLOCK(pgrp); 345 346 doenterpgrp(p, pgrp); 347 348 return (0); 349} 350 351/* 352 * Move p to an existing process group 353 */ 354int 355enterthispgrp(p, pgrp) 356 register struct proc *p; 357 struct pgrp *pgrp; 358{ 359 360 sx_assert(&proctree_lock, SX_XLOCKED); 361 PROC_LOCK_ASSERT(p, MA_NOTOWNED); 362 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED); 363 PGRP_LOCK_ASSERT(p->p_pgrp, MA_NOTOWNED); 364 SESS_LOCK_ASSERT(p->p_session, MA_NOTOWNED); 365 KASSERT(pgrp->pg_session == p->p_session, 366 ("%s: pgrp's session %p, p->p_session %p.\n", 367 __func__, 368 pgrp->pg_session, 369 p->p_session)); 370 KASSERT(pgrp != p->p_pgrp, 371 ("%s: p belongs to pgrp.", __func__)); 372 373 doenterpgrp(p, pgrp); 374 375 return (0); 376} 377 378/* 379 * Move p to a process group 380 */ 381static void 382doenterpgrp(p, pgrp) 383 struct proc *p; 384 struct pgrp *pgrp; 385{ 386 struct pgrp *savepgrp; 387 388 sx_assert(&proctree_lock, SX_XLOCKED); 389 PROC_LOCK_ASSERT(p, MA_NOTOWNED); 390 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED); 391 PGRP_LOCK_ASSERT(p->p_pgrp, MA_NOTOWNED); 392 SESS_LOCK_ASSERT(p->p_session, MA_NOTOWNED); 393 394 savepgrp = p->p_pgrp; 395 396 /* 397 * Adjust eligibility of affected pgrps to participate in job control. 398 * Increment eligibility counts before decrementing, otherwise we 399 * could reach 0 spuriously during the first call. 400 */ 401 fixjobc(p, pgrp, 1); 402 fixjobc(p, p->p_pgrp, 0); 403 404 mtx_lock(&Giant); /* XXX TTY */ 405 PGRP_LOCK(pgrp); 406 PGRP_LOCK(savepgrp); 407 PROC_LOCK(p); 408 LIST_REMOVE(p, p_pglist); 409 p->p_pgrp = pgrp; 410 PROC_UNLOCK(p); 411 LIST_INSERT_HEAD(&pgrp->pg_members, p, p_pglist); 412 PGRP_UNLOCK(savepgrp); 413 PGRP_UNLOCK(pgrp); 414 mtx_unlock(&Giant); /* XXX TTY */ 415 if (LIST_EMPTY(&savepgrp->pg_members)) 416 pgdelete(savepgrp); 417} 418 419/* 420 * remove process from process group 421 */ 422int 423leavepgrp(p) 424 register struct proc *p; 425{ 426 struct pgrp *savepgrp; 427 428 sx_assert(&proctree_lock, SX_XLOCKED); 429 savepgrp = p->p_pgrp; 430 mtx_lock(&Giant); /* XXX TTY */ 431 PGRP_LOCK(savepgrp); 432 PROC_LOCK(p); 433 LIST_REMOVE(p, p_pglist); 434 p->p_pgrp = NULL; 435 PROC_UNLOCK(p); 436 PGRP_UNLOCK(savepgrp); 437 mtx_unlock(&Giant); /* XXX TTY */ 438 if (LIST_EMPTY(&savepgrp->pg_members)) 439 pgdelete(savepgrp); 440 return (0); 441} 442 443/* 444 * delete a process group 445 */ 446static void 447pgdelete(pgrp) 448 register struct pgrp *pgrp; 449{ 450 struct session *savesess; 451 452 sx_assert(&proctree_lock, SX_XLOCKED); 453 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED); 454 SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED); 455 456 /* 457 * Reset any sigio structures pointing to us as a result of 458 * F_SETOWN with our pgid. 459 */ 460 funsetownlst(&pgrp->pg_sigiolst); 461 462 mtx_lock(&Giant); /* XXX TTY */ 463 PGRP_LOCK(pgrp); 464 if (pgrp->pg_session->s_ttyp != NULL && 465 pgrp->pg_session->s_ttyp->t_pgrp == pgrp) 466 pgrp->pg_session->s_ttyp->t_pgrp = NULL; 467 LIST_REMOVE(pgrp, pg_hash); 468 savesess = pgrp->pg_session; 469 SESSRELE(savesess); 470 PGRP_UNLOCK(pgrp); 471 mtx_destroy(&pgrp->pg_mtx); 472 FREE(pgrp, M_PGRP); 473 mtx_unlock(&Giant); /* XXX TTY */ 474} 475 476static void 477pgadjustjobc(pgrp, entering) 478 struct pgrp *pgrp; 479 int entering; 480{ 481 482 PGRP_LOCK(pgrp); 483 if (entering) 484 pgrp->pg_jobc++; 485 else { 486 --pgrp->pg_jobc; 487 if (pgrp->pg_jobc == 0) 488 orphanpg(pgrp); 489 } 490 PGRP_UNLOCK(pgrp); 491} 492 493/* 494 * Adjust pgrp jobc counters when specified process changes process group. 495 * We count the number of processes in each process group that "qualify" 496 * the group for terminal job control (those with a parent in a different 497 * process group of the same session). If that count reaches zero, the 498 * process group becomes orphaned. Check both the specified process' 499 * process group and that of its children. 500 * entering == 0 => p is leaving specified group. 501 * entering == 1 => p is entering specified group. 502 */ 503void 504fixjobc(p, pgrp, entering) 505 register struct proc *p; 506 register struct pgrp *pgrp; 507 int entering; 508{ 509 register struct pgrp *hispgrp; 510 register struct session *mysession; 511 512 sx_assert(&proctree_lock, SX_LOCKED); 513 PROC_LOCK_ASSERT(p, MA_NOTOWNED); 514 PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED); 515 SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED); 516 517 /* 518 * Check p's parent to see whether p qualifies its own process 519 * group; if so, adjust count for p's process group. 520 */ 521 mysession = pgrp->pg_session; 522 if ((hispgrp = p->p_pptr->p_pgrp) != pgrp && 523 hispgrp->pg_session == mysession) 524 pgadjustjobc(pgrp, entering); 525 526 /* 527 * Check this process' children to see whether they qualify 528 * their process groups; if so, adjust counts for children's 529 * process groups. 530 */ 531 LIST_FOREACH(p, &p->p_children, p_sibling) { 532 hispgrp = p->p_pgrp; 533 if (hispgrp == pgrp || 534 hispgrp->pg_session != mysession) 535 continue; 536 PROC_LOCK(p); 537 if (p->p_state == PRS_ZOMBIE) { 538 PROC_UNLOCK(p); 539 continue; 540 } 541 PROC_UNLOCK(p); 542 pgadjustjobc(hispgrp, entering); 543 } 544} 545 546/* 547 * A process group has become orphaned; 548 * if there are any stopped processes in the group, 549 * hang-up all process in that group. 550 */ 551static void 552orphanpg(pg) 553 struct pgrp *pg; 554{ 555 register struct proc *p; 556 557 PGRP_LOCK_ASSERT(pg, MA_OWNED); 558 559 LIST_FOREACH(p, &pg->pg_members, p_pglist) { 560 PROC_LOCK(p); 561 if (P_SHOULDSTOP(p)) { 562 PROC_UNLOCK(p); 563 LIST_FOREACH(p, &pg->pg_members, p_pglist) { 564 PROC_LOCK(p); 565 psignal(p, SIGHUP); 566 psignal(p, SIGCONT); 567 PROC_UNLOCK(p); 568 } 569 return; 570 } 571 PROC_UNLOCK(p); 572 } 573} 574 575void 576sessrele(struct session *s) 577{ 578 int i; 579 580 SESS_LOCK(s); 581 i = --s->s_count; 582 SESS_UNLOCK(s); 583 if (i == 0) { 584 if (s->s_ttyp != NULL) 585 ttyrel(s->s_ttyp); 586 mtx_destroy(&s->s_mtx); 587 FREE(s, M_SESSION); 588 } 589} 590 591#include "opt_ddb.h" 592#ifdef DDB 593#include <ddb/ddb.h> 594 595DB_SHOW_COMMAND(pgrpdump, pgrpdump) 596{ 597 register struct pgrp *pgrp; 598 register struct proc *p; 599 register int i; 600 601 for (i = 0; i <= pgrphash; i++) { 602 if (!LIST_EMPTY(&pgrphashtbl[i])) { 603 printf("\tindx %d\n", i); 604 LIST_FOREACH(pgrp, &pgrphashtbl[i], pg_hash) { 605 printf( 606 "\tpgrp %p, pgid %ld, sess %p, sesscnt %d, mem %p\n", 607 (void *)pgrp, (long)pgrp->pg_id, 608 (void *)pgrp->pg_session, 609 pgrp->pg_session->s_count, 610 (void *)LIST_FIRST(&pgrp->pg_members)); 611 LIST_FOREACH(p, &pgrp->pg_members, p_pglist) { 612 printf("\t\tpid %ld addr %p pgrp %p\n", 613 (long)p->p_pid, (void *)p, 614 (void *)p->p_pgrp); 615 } 616 } 617 } 618 } 619} 620#endif /* DDB */ 621 622/* 623 * Clear kinfo_proc and fill in any information that is common 624 * to all threads in the process. 625 * Must be called with the target process locked. 626 */ 627static void 628fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp) 629{ 630 struct thread *td0; 631 struct tty *tp; 632 struct session *sp; 633 struct ucred *cred; 634 struct sigacts *ps; 635 636 bzero(kp, sizeof(*kp)); 637 638 kp->ki_structsize = sizeof(*kp); 639 kp->ki_paddr = p; 640 PROC_LOCK_ASSERT(p, MA_OWNED); 641 kp->ki_addr =/* p->p_addr; */0; /* XXXKSE */ 642 kp->ki_args = p->p_args; 643 kp->ki_textvp = p->p_textvp; 644#ifdef KTRACE 645 kp->ki_tracep = p->p_tracevp; 646 mtx_lock(&ktrace_mtx); 647 kp->ki_traceflag = p->p_traceflag; 648 mtx_unlock(&ktrace_mtx); 649#endif 650 kp->ki_fd = p->p_fd; 651 kp->ki_vmspace = p->p_vmspace; 652 kp->ki_flag = p->p_flag; 653 cred = p->p_ucred; 654 if (cred) { 655 kp->ki_uid = cred->cr_uid; 656 kp->ki_ruid = cred->cr_ruid; 657 kp->ki_svuid = cred->cr_svuid; 658 /* XXX bde doesn't like KI_NGROUPS */ 659 kp->ki_ngroups = min(cred->cr_ngroups, KI_NGROUPS); 660 bcopy(cred->cr_groups, kp->ki_groups, 661 kp->ki_ngroups * sizeof(gid_t)); 662 kp->ki_rgid = cred->cr_rgid; 663 kp->ki_svgid = cred->cr_svgid; 664 /* If jailed(cred), emulate the old P_JAILED flag. */ 665 if (jailed(cred)) { 666 kp->ki_flag |= P_JAILED; 667 /* If inside a jail, use 0 as a jail ID. */ 668 if (!jailed(curthread->td_ucred)) 669 kp->ki_jid = cred->cr_prison->pr_id; 670 } 671 } 672 ps = p->p_sigacts; 673 if (ps) { 674 mtx_lock(&ps->ps_mtx); 675 kp->ki_sigignore = ps->ps_sigignore; 676 kp->ki_sigcatch = ps->ps_sigcatch; 677 mtx_unlock(&ps->ps_mtx); 678 } 679 mtx_lock_spin(&sched_lock); 680 if (p->p_state != PRS_NEW && 681 p->p_state != PRS_ZOMBIE && 682 p->p_vmspace != NULL) { 683 struct vmspace *vm = p->p_vmspace; 684 685 kp->ki_size = vm->vm_map.size; 686 kp->ki_rssize = vmspace_resident_count(vm); /*XXX*/ 687 FOREACH_THREAD_IN_PROC(p, td0) { 688 if (!TD_IS_SWAPPED(td0)) 689 kp->ki_rssize += td0->td_kstack_pages; 690 if (td0->td_altkstack_obj != NULL) 691 kp->ki_rssize += td0->td_altkstack_pages; 692 } 693 kp->ki_swrss = vm->vm_swrss; 694 kp->ki_tsize = vm->vm_tsize; 695 kp->ki_dsize = vm->vm_dsize; 696 kp->ki_ssize = vm->vm_ssize; 697 } else if (p->p_state == PRS_ZOMBIE) 698 kp->ki_stat = SZOMB; 699 kp->ki_sflag = p->p_sflag; 700 kp->ki_swtime = p->p_swtime; 701 kp->ki_pid = p->p_pid; 702 kp->ki_nice = p->p_nice; 703 kp->ki_runtime = cputick2usec(p->p_rux.rux_runtime); 704 mtx_unlock_spin(&sched_lock); 705 if ((p->p_sflag & PS_INMEM) && p->p_stats != NULL) { 706 kp->ki_start = p->p_stats->p_start; 707 timevaladd(&kp->ki_start, &boottime); 708 kp->ki_rusage = p->p_stats->p_ru; 709 calcru(p, &kp->ki_rusage.ru_utime, &kp->ki_rusage.ru_stime); 710 calccru(p, &kp->ki_childutime, &kp->ki_childstime); 711 712 /* Some callers want child-times in a single value */ 713 kp->ki_childtime = kp->ki_childstime; 714 timevaladd(&kp->ki_childtime, &kp->ki_childutime); 715 } 716 tp = NULL; 717 if (p->p_pgrp) { 718 kp->ki_pgid = p->p_pgrp->pg_id; 719 kp->ki_jobc = p->p_pgrp->pg_jobc; 720 sp = p->p_pgrp->pg_session; 721 722 if (sp != NULL) { 723 kp->ki_sid = sp->s_sid; 724 SESS_LOCK(sp); 725 strlcpy(kp->ki_login, sp->s_login, 726 sizeof(kp->ki_login)); 727 if (sp->s_ttyvp) 728 kp->ki_kiflag |= KI_CTTY; 729 if (SESS_LEADER(p)) 730 kp->ki_kiflag |= KI_SLEADER; 731 tp = sp->s_ttyp; 732 SESS_UNLOCK(sp); 733 } 734 } 735 if ((p->p_flag & P_CONTROLT) && tp != NULL) { 736 kp->ki_tdev = dev2udev(tp->t_dev); 737 kp->ki_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 738 if (tp->t_session) 739 kp->ki_tsid = tp->t_session->s_sid; 740 } else 741 kp->ki_tdev = NODEV; 742 if (p->p_comm[0] != '\0') { 743 strlcpy(kp->ki_comm, p->p_comm, sizeof(kp->ki_comm)); 744 /* 745 * Temporarily give the thread a default name of the process 746 * as it's erroneously used in the snmp code. 747 * Remove this when that is fixed. (soon I'm told) 748 */ 749 strlcpy(kp->ki_ocomm, p->p_comm, sizeof(kp->ki_ocomm)); 750 } 751 if (p->p_sysent && p->p_sysent->sv_name != NULL && 752 p->p_sysent->sv_name[0] != '\0') 753 strlcpy(kp->ki_emul, p->p_sysent->sv_name, sizeof(kp->ki_emul)); 754 kp->ki_siglist = p->p_siglist; 755 kp->ki_xstat = p->p_xstat; 756 kp->ki_acflag = p->p_acflag; 757 kp->ki_lock = p->p_lock; 758 if (p->p_pptr) 759 kp->ki_ppid = p->p_pptr->p_pid; 760} 761 762/* 763 * Fill in information that is thread specific. 764 * Must be called with sched_lock locked. 765 */ 766static void 767fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp) 768{ 769 struct ksegrp *kg; 770 struct proc *p; 771 772 p = td->td_proc; 773 774 if (td->td_wmesg != NULL) 775 strlcpy(kp->ki_wmesg, td->td_wmesg, sizeof(kp->ki_wmesg)); 776 else 777 bzero(kp->ki_wmesg, sizeof(kp->ki_wmesg)); 778 if (td->td_name[0] != '\0') 779 strlcpy(kp->ki_ocomm, td->td_name, sizeof(kp->ki_ocomm)); 780 if (TD_ON_LOCK(td)) { 781 kp->ki_kiflag |= KI_LOCKBLOCK; 782 strlcpy(kp->ki_lockname, td->td_lockname, 783 sizeof(kp->ki_lockname)); 784 } else { 785 kp->ki_kiflag &= ~KI_LOCKBLOCK; 786 bzero(kp->ki_lockname, sizeof(kp->ki_lockname)); 787 } 788 789 if (p->p_state == PRS_NORMAL) { /* XXXKSE very approximate */ 790 if (TD_ON_RUNQ(td) || 791 TD_CAN_RUN(td) || 792 TD_IS_RUNNING(td)) { 793 kp->ki_stat = SRUN; 794 } else if (P_SHOULDSTOP(p)) { 795 kp->ki_stat = SSTOP; 796 } else if (TD_IS_SLEEPING(td)) { 797 kp->ki_stat = SSLEEP; 798 } else if (TD_ON_LOCK(td)) { 799 kp->ki_stat = SLOCK; 800 } else { 801 kp->ki_stat = SWAIT; 802 } 803 } else if (p->p_state == PRS_ZOMBIE) { 804 kp->ki_stat = SZOMB; 805 } else { 806 kp->ki_stat = SIDL; 807 } 808 809 kg = td->td_ksegrp; 810 811 /* things in the KSE GROUP */ 812 kp->ki_estcpu = kg->kg_estcpu; 813 kp->ki_slptime = kg->kg_slptime; 814 kp->ki_pri.pri_user = kg->kg_user_pri; 815 kp->ki_pri.pri_class = kg->kg_pri_class; 816 817 /* Things in the thread */ 818 kp->ki_wchan = td->td_wchan; 819 kp->ki_pri.pri_level = td->td_priority; 820 kp->ki_pri.pri_native = td->td_base_pri; 821 kp->ki_lastcpu = td->td_lastcpu; 822 kp->ki_oncpu = td->td_oncpu; 823 kp->ki_tdflags = td->td_flags; 824 kp->ki_tid = td->td_tid; 825 kp->ki_numthreads = p->p_numthreads; 826 kp->ki_pcb = td->td_pcb; 827 kp->ki_kstack = (void *)td->td_kstack; 828 kp->ki_pctcpu = sched_pctcpu(td); 829 830 /* We can't get this anymore but ps etc never used it anyway. */ 831 kp->ki_rqindex = 0; 832 833 SIGSETOR(kp->ki_siglist, td->td_siglist); 834 kp->ki_sigmask = td->td_sigmask; 835} 836 837/* 838 * Fill in a kinfo_proc structure for the specified process. 839 * Must be called with the target process locked. 840 */ 841void 842fill_kinfo_proc(struct proc *p, struct kinfo_proc *kp) 843{ 844 845 fill_kinfo_proc_only(p, kp); 846 mtx_lock_spin(&sched_lock); 847 if (FIRST_THREAD_IN_PROC(p) != NULL) 848 fill_kinfo_thread(FIRST_THREAD_IN_PROC(p), kp); 849 mtx_unlock_spin(&sched_lock); 850} 851 852struct pstats * 853pstats_alloc(void) 854{ 855 856 return (malloc(sizeof(struct pstats), M_SUBPROC, M_ZERO|M_WAITOK)); 857} 858 859/* 860 * Copy parts of p_stats; zero the rest of p_stats (statistics). 861 */ 862void 863pstats_fork(struct pstats *src, struct pstats *dst) 864{ 865 866 bzero(&dst->pstat_startzero, 867 __rangeof(struct pstats, pstat_startzero, pstat_endzero)); 868 bcopy(&src->pstat_startcopy, &dst->pstat_startcopy, 869 __rangeof(struct pstats, pstat_startcopy, pstat_endcopy)); 870} 871 872void 873pstats_free(struct pstats *ps) 874{ 875 876 free(ps, M_SUBPROC); 877} 878 879/* 880 * Locate a zombie process by number 881 */ 882struct proc * 883zpfind(pid_t pid) 884{ 885 struct proc *p; 886 887 sx_slock(&allproc_lock); 888 LIST_FOREACH(p, &zombproc, p_list) 889 if (p->p_pid == pid) { 890 PROC_LOCK(p); 891 break; 892 } 893 sx_sunlock(&allproc_lock); 894 return (p); 895} 896 897#define KERN_PROC_ZOMBMASK 0x3 898#define KERN_PROC_NOTHREADS 0x4 899 900/* 901 * Must be called with the process locked and will return with it unlocked. 902 */ 903static int 904sysctl_out_proc(struct proc *p, struct sysctl_req *req, int flags) 905{ 906 struct thread *td; 907 struct kinfo_proc kinfo_proc; 908 int error = 0; 909 struct proc *np; 910 pid_t pid = p->p_pid; 911 912 PROC_LOCK_ASSERT(p, MA_OWNED); 913 914 fill_kinfo_proc_only(p, &kinfo_proc); 915 if (flags & KERN_PROC_NOTHREADS) { 916 mtx_lock_spin(&sched_lock); 917 if (FIRST_THREAD_IN_PROC(p) != NULL) 918 fill_kinfo_thread(FIRST_THREAD_IN_PROC(p), &kinfo_proc); 919 mtx_unlock_spin(&sched_lock); 920 error = SYSCTL_OUT(req, (caddr_t)&kinfo_proc, 921 sizeof(kinfo_proc)); 922 } else { 923 mtx_lock_spin(&sched_lock); 924 if (FIRST_THREAD_IN_PROC(p) != NULL) 925 FOREACH_THREAD_IN_PROC(p, td) { 926 fill_kinfo_thread(td, &kinfo_proc); 927 error = SYSCTL_OUT(req, (caddr_t)&kinfo_proc, 928 sizeof(kinfo_proc)); 929 if (error) 930 break; 931 } 932 else 933 error = SYSCTL_OUT(req, (caddr_t)&kinfo_proc, 934 sizeof(kinfo_proc)); 935 mtx_unlock_spin(&sched_lock); 936 } 937 PROC_UNLOCK(p); 938 if (error) 939 return (error); 940 if (flags & KERN_PROC_ZOMBMASK) 941 np = zpfind(pid); 942 else { 943 if (pid == 0) 944 return (0); 945 np = pfind(pid); 946 } 947 if (np == NULL) 948 return EAGAIN; 949 if (np != p) { 950 PROC_UNLOCK(np); 951 return EAGAIN; 952 } 953 PROC_UNLOCK(np); 954 return (0); 955} 956 957static int 958sysctl_kern_proc(SYSCTL_HANDLER_ARGS) 959{ 960 int *name = (int*) arg1; 961 u_int namelen = arg2; 962 struct proc *p; 963 int flags, doingzomb, oid_number; 964 int error = 0; 965 966 oid_number = oidp->oid_number; 967 if (oid_number != KERN_PROC_ALL && 968 (oid_number & KERN_PROC_INC_THREAD) == 0) 969 flags = KERN_PROC_NOTHREADS; 970 else { 971 flags = 0; 972 oid_number &= ~KERN_PROC_INC_THREAD; 973 } 974 if (oid_number == KERN_PROC_PID) { 975 if (namelen != 1) 976 return (EINVAL); 977 error = sysctl_wire_old_buffer(req, 0); 978 if (error) 979 return (error); 980 p = pfind((pid_t)name[0]); 981 if (!p) 982 return (ESRCH); 983 if ((error = p_cansee(curthread, p))) { 984 PROC_UNLOCK(p); 985 return (error); 986 } 987 error = sysctl_out_proc(p, req, flags); 988 return (error); 989 } 990 991 switch (oid_number) { 992 case KERN_PROC_ALL: 993 if (namelen != 0) 994 return (EINVAL); 995 break; 996 case KERN_PROC_PROC: 997 if (namelen != 0 && namelen != 1) 998 return (EINVAL); 999 break; 1000 default: 1001 if (namelen != 1) 1002 return (EINVAL); 1003 break; 1004 } 1005 1006 if (!req->oldptr) { 1007 /* overestimate by 5 procs */ 1008 error = SYSCTL_OUT(req, 0, sizeof (struct kinfo_proc) * 5); 1009 if (error) 1010 return (error); 1011 } 1012 error = sysctl_wire_old_buffer(req, 0); 1013 if (error != 0) 1014 return (error); 1015 sx_slock(&allproc_lock); 1016 for (doingzomb=0 ; doingzomb < 2 ; doingzomb++) { 1017 if (!doingzomb) 1018 p = LIST_FIRST(&allproc); 1019 else 1020 p = LIST_FIRST(&zombproc); 1021 for (; p != 0; p = LIST_NEXT(p, p_list)) { 1022 /* 1023 * Skip embryonic processes. 1024 */ 1025 mtx_lock_spin(&sched_lock); 1026 if (p->p_state == PRS_NEW) { 1027 mtx_unlock_spin(&sched_lock); 1028 continue; 1029 } 1030 mtx_unlock_spin(&sched_lock); 1031 PROC_LOCK(p); 1032 KASSERT(p->p_ucred != NULL, 1033 ("process credential is NULL for non-NEW proc")); 1034 /* 1035 * Show a user only appropriate processes. 1036 */ 1037 if (p_cansee(curthread, p)) { 1038 PROC_UNLOCK(p); 1039 continue; 1040 } 1041 /* 1042 * TODO - make more efficient (see notes below). 1043 * do by session. 1044 */ 1045 switch (oid_number) { 1046 1047 case KERN_PROC_GID: 1048 if (p->p_ucred->cr_gid != (gid_t)name[0]) { 1049 PROC_UNLOCK(p); 1050 continue; 1051 } 1052 break; 1053 1054 case KERN_PROC_PGRP: 1055 /* could do this by traversing pgrp */ 1056 if (p->p_pgrp == NULL || 1057 p->p_pgrp->pg_id != (pid_t)name[0]) { 1058 PROC_UNLOCK(p); 1059 continue; 1060 } 1061 break; 1062 1063 case KERN_PROC_RGID: 1064 if (p->p_ucred->cr_rgid != (gid_t)name[0]) { 1065 PROC_UNLOCK(p); 1066 continue; 1067 } 1068 break; 1069 1070 case KERN_PROC_SESSION: 1071 if (p->p_session == NULL || 1072 p->p_session->s_sid != (pid_t)name[0]) { 1073 PROC_UNLOCK(p); 1074 continue; 1075 } 1076 break; 1077 1078 case KERN_PROC_TTY: 1079 if ((p->p_flag & P_CONTROLT) == 0 || 1080 p->p_session == NULL) { 1081 PROC_UNLOCK(p); 1082 continue; 1083 } 1084 SESS_LOCK(p->p_session); 1085 if (p->p_session->s_ttyp == NULL || 1086 dev2udev(p->p_session->s_ttyp->t_dev) != 1087 (dev_t)name[0]) { 1088 SESS_UNLOCK(p->p_session); 1089 PROC_UNLOCK(p); 1090 continue; 1091 } 1092 SESS_UNLOCK(p->p_session); 1093 break; 1094 1095 case KERN_PROC_UID: 1096 if (p->p_ucred->cr_uid != (uid_t)name[0]) { 1097 PROC_UNLOCK(p); 1098 continue; 1099 } 1100 break; 1101 1102 case KERN_PROC_RUID: 1103 if (p->p_ucred->cr_ruid != (uid_t)name[0]) { 1104 PROC_UNLOCK(p); 1105 continue; 1106 } 1107 break; 1108 1109 case KERN_PROC_PROC: 1110 break; 1111 1112 default: 1113 break; 1114 1115 } 1116 1117 error = sysctl_out_proc(p, req, flags | doingzomb); 1118 if (error) { 1119 sx_sunlock(&allproc_lock); 1120 return (error); 1121 } 1122 } 1123 } 1124 sx_sunlock(&allproc_lock); 1125 return (0); 1126} 1127 1128struct pargs * 1129pargs_alloc(int len) 1130{ 1131 struct pargs *pa; 1132 1133 MALLOC(pa, struct pargs *, sizeof(struct pargs) + len, M_PARGS, 1134 M_WAITOK); 1135 refcount_init(&pa->ar_ref, 1); 1136 pa->ar_length = len; 1137 return (pa); 1138} 1139 1140void 1141pargs_free(struct pargs *pa) 1142{ 1143 1144 FREE(pa, M_PARGS); 1145} 1146 1147void 1148pargs_hold(struct pargs *pa) 1149{ 1150 1151 if (pa == NULL) 1152 return; 1153 refcount_acquire(&pa->ar_ref); 1154} 1155 1156void 1157pargs_drop(struct pargs *pa) 1158{ 1159 1160 if (pa == NULL) 1161 return; 1162 if (refcount_release(&pa->ar_ref)) 1163 pargs_free(pa); 1164} 1165 1166/* 1167 * This sysctl allows a process to retrieve the argument list or process 1168 * title for another process without groping around in the address space 1169 * of the other process. It also allow a process to set its own "process 1170 * title to a string of its own choice. 1171 */ 1172static int 1173sysctl_kern_proc_args(SYSCTL_HANDLER_ARGS) 1174{ 1175 int *name = (int*) arg1; 1176 u_int namelen = arg2; 1177 struct pargs *newpa, *pa; 1178 struct proc *p; 1179 int error = 0; 1180 1181 if (namelen != 1) 1182 return (EINVAL); 1183 1184 p = pfind((pid_t)name[0]); 1185 if (!p) 1186 return (ESRCH); 1187 1188 if ((error = p_cansee(curthread, p)) != 0) { 1189 PROC_UNLOCK(p); 1190 return (error); 1191 } 1192 1193 if (req->newptr && curproc != p) { 1194 PROC_UNLOCK(p); 1195 return (EPERM); 1196 } 1197 1198 pa = p->p_args; 1199 pargs_hold(pa); 1200 PROC_UNLOCK(p); 1201 if (req->oldptr != NULL && pa != NULL) 1202 error = SYSCTL_OUT(req, pa->ar_args, pa->ar_length); 1203 pargs_drop(pa); 1204 if (error != 0 || req->newptr == NULL) 1205 return (error); 1206 1207 if (req->newlen + sizeof(struct pargs) > ps_arg_cache_limit) 1208 return (ENOMEM); 1209 newpa = pargs_alloc(req->newlen); 1210 error = SYSCTL_IN(req, newpa->ar_args, req->newlen); 1211 if (error != 0) { 1212 pargs_free(newpa); 1213 return (error); 1214 } 1215 PROC_LOCK(p); 1216 pa = p->p_args; 1217 p->p_args = newpa; 1218 PROC_UNLOCK(p); 1219 pargs_drop(pa); 1220 return (0); 1221} 1222 1223/* 1224 * This sysctl allows a process to retrieve the path of the executable for 1225 * itself or another process. 1226 */ 1227static int 1228sysctl_kern_proc_pathname(SYSCTL_HANDLER_ARGS) 1229{ 1230 pid_t *pidp = (pid_t *)arg1; 1231 unsigned int arglen = arg2; 1232 struct proc *p; 1233 struct vnode *vp; 1234 char *retbuf, *freebuf; 1235 int error; 1236 1237 if (arglen != 1) 1238 return (EINVAL); 1239 if (*pidp == -1) { /* -1 means this process */ 1240 p = req->td->td_proc; 1241 } else { 1242 p = pfind(*pidp); 1243 if (p == NULL) 1244 return (ESRCH); 1245 if ((error = p_cansee(curthread, p)) != 0) { 1246 PROC_UNLOCK(p); 1247 return (error); 1248 } 1249 } 1250 1251 vp = p->p_textvp; 1252 vref(vp); 1253 if (*pidp != -1) 1254 PROC_UNLOCK(p); 1255 error = vn_fullpath(req->td, vp, &retbuf, &freebuf); 1256 vrele(vp); 1257 if (error) 1258 return (error); 1259 error = SYSCTL_OUT(req, retbuf, strlen(retbuf) + 1); 1260 free(freebuf, M_TEMP); 1261 return (error); 1262} 1263 1264static int 1265sysctl_kern_proc_sv_name(SYSCTL_HANDLER_ARGS) 1266{ 1267 struct proc *p; 1268 char *sv_name; 1269 int *name; 1270 int namelen; 1271 int error; 1272 1273 namelen = arg2; 1274 if (namelen != 1) 1275 return (EINVAL); 1276 1277 name = (int *)arg1; 1278 if ((p = pfind((pid_t)name[0])) == NULL) 1279 return (ESRCH); 1280 if ((error = p_cansee(curthread, p))) { 1281 PROC_UNLOCK(p); 1282 return (error); 1283 } 1284 sv_name = p->p_sysent->sv_name; 1285 PROC_UNLOCK(p); 1286 return (sysctl_handle_string(oidp, sv_name, 0, req)); 1287} 1288 1289 1290static SYSCTL_NODE(_kern, KERN_PROC, proc, CTLFLAG_RD, 0, "Process table"); 1291 1292SYSCTL_PROC(_kern_proc, KERN_PROC_ALL, all, CTLFLAG_RD|CTLTYPE_STRUCT, 1293 0, 0, sysctl_kern_proc, "S,proc", "Return entire process table"); 1294 1295static SYSCTL_NODE(_kern_proc, KERN_PROC_GID, gid, CTLFLAG_RD, 1296 sysctl_kern_proc, "Process table"); 1297 1298static SYSCTL_NODE(_kern_proc, KERN_PROC_PGRP, pgrp, CTLFLAG_RD, 1299 sysctl_kern_proc, "Process table"); 1300 1301static SYSCTL_NODE(_kern_proc, KERN_PROC_RGID, rgid, CTLFLAG_RD, 1302 sysctl_kern_proc, "Process table"); 1303 1304static SYSCTL_NODE(_kern_proc, KERN_PROC_SESSION, sid, CTLFLAG_RD, 1305 sysctl_kern_proc, "Process table"); 1306 1307static SYSCTL_NODE(_kern_proc, KERN_PROC_TTY, tty, CTLFLAG_RD, 1308 sysctl_kern_proc, "Process table"); 1309 1310static SYSCTL_NODE(_kern_proc, KERN_PROC_UID, uid, CTLFLAG_RD, 1311 sysctl_kern_proc, "Process table"); 1312 1313static SYSCTL_NODE(_kern_proc, KERN_PROC_RUID, ruid, CTLFLAG_RD, 1314 sysctl_kern_proc, "Process table"); 1315 1316static SYSCTL_NODE(_kern_proc, KERN_PROC_PID, pid, CTLFLAG_RD, 1317 sysctl_kern_proc, "Process table"); 1318 1319static SYSCTL_NODE(_kern_proc, KERN_PROC_PROC, proc, CTLFLAG_RD, 1320 sysctl_kern_proc, "Return process table, no threads"); 1321 1322static SYSCTL_NODE(_kern_proc, KERN_PROC_ARGS, args, 1323 CTLFLAG_RW | CTLFLAG_ANYBODY, 1324 sysctl_kern_proc_args, "Process argument list"); 1325 1326static SYSCTL_NODE(_kern_proc, KERN_PROC_PATHNAME, pathname, CTLFLAG_RD, 1327 sysctl_kern_proc_pathname, "Process executable path"); 1328 1329static SYSCTL_NODE(_kern_proc, KERN_PROC_SV_NAME, sv_name, CTLFLAG_RD, 1330 sysctl_kern_proc_sv_name, "Process syscall vector name (ABI type)"); 1331 1332static SYSCTL_NODE(_kern_proc, (KERN_PROC_GID | KERN_PROC_INC_THREAD), gid_td, 1333 CTLFLAG_RD, sysctl_kern_proc, "Process table"); 1334 1335static SYSCTL_NODE(_kern_proc, (KERN_PROC_PGRP | KERN_PROC_INC_THREAD), pgrp_td, 1336 CTLFLAG_RD, sysctl_kern_proc, "Process table"); 1337 1338static SYSCTL_NODE(_kern_proc, (KERN_PROC_RGID | KERN_PROC_INC_THREAD), rgid_td, 1339 CTLFLAG_RD, sysctl_kern_proc, "Process table"); 1340 1341static SYSCTL_NODE(_kern_proc, (KERN_PROC_SESSION | KERN_PROC_INC_THREAD), 1342 sid_td, CTLFLAG_RD, sysctl_kern_proc, "Process table"); 1343 1344static SYSCTL_NODE(_kern_proc, (KERN_PROC_TTY | KERN_PROC_INC_THREAD), tty_td, 1345 CTLFLAG_RD, sysctl_kern_proc, "Process table"); 1346 1347static SYSCTL_NODE(_kern_proc, (KERN_PROC_UID | KERN_PROC_INC_THREAD), uid_td, 1348 CTLFLAG_RD, sysctl_kern_proc, "Process table"); 1349 1350static SYSCTL_NODE(_kern_proc, (KERN_PROC_RUID | KERN_PROC_INC_THREAD), ruid_td, 1351 CTLFLAG_RD, sysctl_kern_proc, "Process table"); 1352 1353static SYSCTL_NODE(_kern_proc, (KERN_PROC_PID | KERN_PROC_INC_THREAD), pid_td, 1354 CTLFLAG_RD, sysctl_kern_proc, "Process table"); 1355 1356static SYSCTL_NODE(_kern_proc, (KERN_PROC_PROC | KERN_PROC_INC_THREAD), proc_td, 1357 CTLFLAG_RD, sysctl_kern_proc, "Return process table, no threads"); 1358