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