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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)kern_proc.c 8.7 (Berkeley) 2/14/95 34 * $FreeBSD: src/sys/kern/kern_proc.c,v 1.63.2.9 2003/05/08 07:47:16 kbyanc Exp $ 35 * $DragonFly: src/sys/kern/kern_proc.c,v 1.15 2004/06/10 22:11:35 dillon Exp $ 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/sysctl.h> 42 #include <sys/malloc.h> 43 #include <sys/proc.h> 44 #include <sys/filedesc.h> 45 #include <sys/tty.h> 46 #include <sys/signalvar.h> 47 #include <vm/vm.h> 48 #include <sys/lock.h> 49 #include <vm/pmap.h> 50 #include <vm/vm_map.h> 51 #include <sys/user.h> 52 #include <vm/vm_zone.h> 53 #include <machine/smp.h> 54 55 static MALLOC_DEFINE(M_PGRP, "pgrp", "process group header"); 56 MALLOC_DEFINE(M_SESSION, "session", "session header"); 57 static MALLOC_DEFINE(M_PROC, "proc", "Proc structures"); 58 MALLOC_DEFINE(M_SUBPROC, "subproc", "Proc sub-structures"); 59 60 int ps_showallprocs = 1; 61 static int ps_showallthreads = 1; 62 SYSCTL_INT(_kern, OID_AUTO, ps_showallprocs, CTLFLAG_RW, 63 &ps_showallprocs, 0, ""); 64 SYSCTL_INT(_kern, OID_AUTO, ps_showallthreads, CTLFLAG_RW, 65 &ps_showallthreads, 0, ""); 66 67 static void pgdelete (struct pgrp *); 68 69 static void orphanpg (struct pgrp *pg); 70 71 /* 72 * Other process lists 73 */ 74 struct pidhashhead *pidhashtbl; 75 u_long pidhash; 76 struct pgrphashhead *pgrphashtbl; 77 u_long pgrphash; 78 struct proclist allproc; 79 struct proclist zombproc; 80 vm_zone_t proc_zone; 81 vm_zone_t thread_zone; 82 83 /* 84 * Initialize global process hashing structures. 85 */ 86 void 87 procinit() 88 { 89 90 LIST_INIT(&allproc); 91 LIST_INIT(&zombproc); 92 pidhashtbl = hashinit(maxproc / 4, M_PROC, &pidhash); 93 pgrphashtbl = hashinit(maxproc / 4, M_PROC, &pgrphash); 94 proc_zone = zinit("PROC", sizeof (struct proc), 0, 0, 5); 95 thread_zone = zinit("THREAD", sizeof (struct thread), 0, 0, 5); 96 uihashinit(); 97 } 98 99 /* 100 * Is p an inferior of the current process? 101 */ 102 int 103 inferior(p) 104 struct proc *p; 105 { 106 107 for (; p != curproc; p = p->p_pptr) 108 if (p->p_pid == 0) 109 return (0); 110 return (1); 111 } 112 113 /* 114 * Locate a process by number 115 */ 116 struct proc * 117 pfind(pid) 118 pid_t pid; 119 { 120 struct proc *p; 121 122 LIST_FOREACH(p, PIDHASH(pid), p_hash) 123 if (p->p_pid == pid) 124 return (p); 125 return (NULL); 126 } 127 128 /* 129 * Locate a process group by number 130 */ 131 struct pgrp * 132 pgfind(pgid) 133 pid_t pgid; 134 { 135 struct pgrp *pgrp; 136 137 LIST_FOREACH(pgrp, PGRPHASH(pgid), pg_hash) 138 if (pgrp->pg_id == pgid) 139 return (pgrp); 140 return (NULL); 141 } 142 143 /* 144 * Move p to a new or existing process group (and session) 145 */ 146 int 147 enterpgrp(p, pgid, mksess) 148 struct proc *p; 149 pid_t pgid; 150 int mksess; 151 { 152 struct pgrp *pgrp = pgfind(pgid); 153 154 KASSERT(pgrp == NULL || !mksess, 155 ("enterpgrp: setsid into non-empty pgrp")); 156 KASSERT(!SESS_LEADER(p), 157 ("enterpgrp: session leader attempted setpgrp")); 158 159 if (pgrp == NULL) { 160 pid_t savepid = p->p_pid; 161 struct proc *np; 162 /* 163 * new process group 164 */ 165 KASSERT(p->p_pid == pgid, 166 ("enterpgrp: new pgrp and pid != pgid")); 167 if ((np = pfind(savepid)) == NULL || np != p) 168 return (ESRCH); 169 MALLOC(pgrp, struct pgrp *, sizeof(struct pgrp), M_PGRP, 170 M_WAITOK); 171 if (mksess) { 172 struct session *sess; 173 174 /* 175 * new session 176 */ 177 MALLOC(sess, struct session *, sizeof(struct session), 178 M_SESSION, M_WAITOK); 179 sess->s_leader = p; 180 sess->s_sid = p->p_pid; 181 sess->s_count = 1; 182 sess->s_ttyvp = NULL; 183 sess->s_ttyp = NULL; 184 bcopy(p->p_session->s_login, sess->s_login, 185 sizeof(sess->s_login)); 186 p->p_flag &= ~P_CONTROLT; 187 pgrp->pg_session = sess; 188 KASSERT(p == curproc, 189 ("enterpgrp: mksession and p != curproc")); 190 } else { 191 pgrp->pg_session = p->p_session; 192 pgrp->pg_session->s_count++; 193 } 194 pgrp->pg_id = pgid; 195 LIST_INIT(&pgrp->pg_members); 196 LIST_INSERT_HEAD(PGRPHASH(pgid), pgrp, pg_hash); 197 pgrp->pg_jobc = 0; 198 SLIST_INIT(&pgrp->pg_sigiolst); 199 } else if (pgrp == p->p_pgrp) 200 return (0); 201 202 /* 203 * Adjust eligibility of affected pgrps to participate in job control. 204 * Increment eligibility counts before decrementing, otherwise we 205 * could reach 0 spuriously during the first call. 206 */ 207 fixjobc(p, pgrp, 1); 208 fixjobc(p, p->p_pgrp, 0); 209 210 LIST_REMOVE(p, p_pglist); 211 if (LIST_EMPTY(&p->p_pgrp->pg_members)) 212 pgdelete(p->p_pgrp); 213 p->p_pgrp = pgrp; 214 LIST_INSERT_HEAD(&pgrp->pg_members, p, p_pglist); 215 return (0); 216 } 217 218 /* 219 * remove process from process group 220 */ 221 int 222 leavepgrp(p) 223 struct proc *p; 224 { 225 226 LIST_REMOVE(p, p_pglist); 227 if (LIST_EMPTY(&p->p_pgrp->pg_members)) 228 pgdelete(p->p_pgrp); 229 p->p_pgrp = 0; 230 return (0); 231 } 232 233 /* 234 * delete a process group 235 */ 236 static void 237 pgdelete(pgrp) 238 struct pgrp *pgrp; 239 { 240 241 /* 242 * Reset any sigio structures pointing to us as a result of 243 * F_SETOWN with our pgid. 244 */ 245 funsetownlst(&pgrp->pg_sigiolst); 246 247 if (pgrp->pg_session->s_ttyp != NULL && 248 pgrp->pg_session->s_ttyp->t_pgrp == pgrp) 249 pgrp->pg_session->s_ttyp->t_pgrp = NULL; 250 LIST_REMOVE(pgrp, pg_hash); 251 if (--pgrp->pg_session->s_count == 0) 252 FREE(pgrp->pg_session, M_SESSION); 253 FREE(pgrp, M_PGRP); 254 } 255 256 /* 257 * Adjust pgrp jobc counters when specified process changes process group. 258 * We count the number of processes in each process group that "qualify" 259 * the group for terminal job control (those with a parent in a different 260 * process group of the same session). If that count reaches zero, the 261 * process group becomes orphaned. Check both the specified process' 262 * process group and that of its children. 263 * entering == 0 => p is leaving specified group. 264 * entering == 1 => p is entering specified group. 265 */ 266 void 267 fixjobc(p, pgrp, entering) 268 struct proc *p; 269 struct pgrp *pgrp; 270 int entering; 271 { 272 struct pgrp *hispgrp; 273 struct session *mysession = pgrp->pg_session; 274 275 /* 276 * Check p's parent to see whether p qualifies its own process 277 * group; if so, adjust count for p's process group. 278 */ 279 if ((hispgrp = p->p_pptr->p_pgrp) != pgrp && 280 hispgrp->pg_session == mysession) { 281 if (entering) 282 pgrp->pg_jobc++; 283 else if (--pgrp->pg_jobc == 0) 284 orphanpg(pgrp); 285 } 286 287 /* 288 * Check this process' children to see whether they qualify 289 * their process groups; if so, adjust counts for children's 290 * process groups. 291 */ 292 LIST_FOREACH(p, &p->p_children, p_sibling) 293 if ((hispgrp = p->p_pgrp) != pgrp && 294 hispgrp->pg_session == mysession && 295 p->p_stat != SZOMB) { 296 if (entering) 297 hispgrp->pg_jobc++; 298 else if (--hispgrp->pg_jobc == 0) 299 orphanpg(hispgrp); 300 } 301 } 302 303 /* 304 * A process group has become orphaned; 305 * if there are any stopped processes in the group, 306 * hang-up all process in that group. 307 */ 308 static void 309 orphanpg(pg) 310 struct pgrp *pg; 311 { 312 struct proc *p; 313 314 LIST_FOREACH(p, &pg->pg_members, p_pglist) { 315 if (p->p_stat == SSTOP) { 316 LIST_FOREACH(p, &pg->pg_members, p_pglist) { 317 psignal(p, SIGHUP); 318 psignal(p, SIGCONT); 319 } 320 return; 321 } 322 } 323 } 324 325 #include "opt_ddb.h" 326 #ifdef DDB 327 #include <ddb/ddb.h> 328 329 DB_SHOW_COMMAND(pgrpdump, pgrpdump) 330 { 331 struct pgrp *pgrp; 332 struct proc *p; 333 int i; 334 335 for (i = 0; i <= pgrphash; i++) { 336 if (!LIST_EMPTY(&pgrphashtbl[i])) { 337 printf("\tindx %d\n", i); 338 LIST_FOREACH(pgrp, &pgrphashtbl[i], pg_hash) { 339 printf( 340 "\tpgrp %p, pgid %ld, sess %p, sesscnt %d, mem %p\n", 341 (void *)pgrp, (long)pgrp->pg_id, 342 (void *)pgrp->pg_session, 343 pgrp->pg_session->s_count, 344 (void *)LIST_FIRST(&pgrp->pg_members)); 345 LIST_FOREACH(p, &pgrp->pg_members, p_pglist) { 346 printf("\t\tpid %ld addr %p pgrp %p\n", 347 (long)p->p_pid, (void *)p, 348 (void *)p->p_pgrp); 349 } 350 } 351 } 352 } 353 } 354 #endif /* DDB */ 355 356 /* 357 * Fill in an eproc structure for the specified thread. 358 */ 359 void 360 fill_eproc_td(thread_t td, struct eproc *ep, struct proc *xp) 361 { 362 bzero(ep, sizeof(*ep)); 363 364 ep->e_uticks = td->td_uticks; 365 ep->e_sticks = td->td_sticks; 366 ep->e_iticks = td->td_iticks; 367 ep->e_tdev = NOUDEV; 368 ep->e_cpuid = td->td_gd->gd_cpuid; 369 if (td->td_wmesg) { 370 strncpy(ep->e_wmesg, td->td_wmesg, WMESGLEN); 371 ep->e_wmesg[WMESGLEN] = 0; 372 } 373 374 /* 375 * Fake up portions of the proc structure copied out by the sysctl 376 * to return useful information. Note that using td_pri directly 377 * is messy because it includes critial section data so we fake 378 * up an rtprio.prio for threads. 379 */ 380 if (xp) { 381 *xp = *initproc; 382 xp->p_rtprio.type = RTP_PRIO_THREAD; 383 xp->p_rtprio.prio = td->td_pri & TDPRI_MASK; 384 xp->p_pid = -1; 385 } 386 } 387 388 /* 389 * Fill in an eproc structure for the specified process. 390 */ 391 void 392 fill_eproc(struct proc *p, struct eproc *ep) 393 { 394 struct tty *tp; 395 396 fill_eproc_td(p->p_thread, ep, NULL); 397 398 ep->e_paddr = p; 399 if (p->p_ucred) { 400 ep->e_ucred = *p->p_ucred; 401 } 402 if (p->p_procsig) { 403 ep->e_procsig = *p->p_procsig; 404 } 405 if (p->p_stat != SIDL && p->p_stat != SZOMB && p->p_vmspace != NULL) { 406 struct vmspace *vm = p->p_vmspace; 407 ep->e_vm = *vm; 408 ep->e_vm.vm_rssize = vmspace_resident_count(vm); /*XXX*/ 409 } 410 if ((p->p_flag & P_INMEM) && p->p_stats) 411 ep->e_stats = *p->p_stats; 412 if (p->p_pptr) 413 ep->e_ppid = p->p_pptr->p_pid; 414 if (p->p_pgrp) { 415 ep->e_pgid = p->p_pgrp->pg_id; 416 ep->e_jobc = p->p_pgrp->pg_jobc; 417 ep->e_sess = p->p_pgrp->pg_session; 418 419 if (ep->e_sess) { 420 bcopy(ep->e_sess->s_login, ep->e_login, sizeof(ep->e_login)); 421 if (ep->e_sess->s_ttyvp) 422 ep->e_flag = EPROC_CTTY; 423 if (p->p_session && SESS_LEADER(p)) 424 ep->e_flag |= EPROC_SLEADER; 425 } 426 } 427 if ((p->p_flag & P_CONTROLT) && 428 (ep->e_sess != NULL) && 429 ((tp = ep->e_sess->s_ttyp) != NULL)) { 430 ep->e_tdev = dev2udev(tp->t_dev); 431 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 432 ep->e_tsess = tp->t_session; 433 } else { 434 ep->e_tdev = NOUDEV; 435 } 436 } 437 438 struct proc * 439 zpfind(pid_t pid) 440 { 441 struct proc *p; 442 443 LIST_FOREACH(p, &zombproc, p_list) 444 if (p->p_pid == pid) 445 return (p); 446 return (NULL); 447 } 448 449 static int 450 sysctl_out_proc(struct proc *p, struct thread *td, struct sysctl_req *req, int doingzomb) 451 { 452 struct eproc eproc; 453 struct proc xproc; 454 int error; 455 #if 0 456 pid_t pid = p->p_pid; 457 #endif 458 459 if (p) { 460 td = p->p_thread; 461 fill_eproc(p, &eproc); 462 xproc = *p; 463 464 /* 465 * Fixup p_stat from SRUN to SSLEEP if the process scheduler 466 * does not own the process and the thread scheduler says it 467 * isn't running or runnable. 468 * 469 * XXX temporary fix which might become permanent (I'd rather 470 * not pollute the thread scheduler with knowlege about 471 * processes). 472 */ 473 if ((p->p_flag & P_CP_RELEASED) && p->p_stat == SRUN && 474 td && (td->td_flags & (TDF_RUNNING|TDF_RUNQ)) == 0 475 ) { 476 xproc.p_stat = SSLEEP; 477 } 478 } else if (td) { 479 fill_eproc_td(td, &eproc, &xproc); 480 } 481 error = SYSCTL_OUT(req,(caddr_t)&xproc, sizeof(struct proc)); 482 if (error) 483 return (error); 484 error = SYSCTL_OUT(req,(caddr_t)&eproc, sizeof(eproc)); 485 if (error) 486 return (error); 487 error = SYSCTL_OUT(req,(caddr_t)td, sizeof(struct thread)); 488 if (error) 489 return (error); 490 #if 0 491 if (!doingzomb && pid && (pfind(pid) != p)) 492 return EAGAIN; 493 if (doingzomb && zpfind(pid) != p) 494 return EAGAIN; 495 #endif 496 return (0); 497 } 498 499 static int 500 sysctl_kern_proc(SYSCTL_HANDLER_ARGS) 501 { 502 int *name = (int*) arg1; 503 u_int namelen = arg2; 504 struct proc *p; 505 struct thread *td; 506 int doingzomb; 507 int error = 0; 508 int n; 509 int origcpu; 510 struct ucred *cr1 = curproc->p_ucred; 511 512 if (oidp->oid_number == KERN_PROC_PID) { 513 if (namelen != 1) 514 return (EINVAL); 515 p = pfind((pid_t)name[0]); 516 if (!p) 517 return (0); 518 if (!PRISON_CHECK(cr1, p->p_ucred)) 519 return (0); 520 error = sysctl_out_proc(p, NULL, req, 0); 521 return (error); 522 } 523 if (oidp->oid_number == KERN_PROC_ALL && !namelen) 524 ; 525 else if (oidp->oid_number != KERN_PROC_ALL && namelen == 1) 526 ; 527 else 528 return (EINVAL); 529 530 if (!req->oldptr) { 531 /* overestimate by 5 procs */ 532 error = SYSCTL_OUT(req, 0, sizeof (struct kinfo_proc) * 5); 533 if (error) 534 return (error); 535 } 536 for (doingzomb=0 ; doingzomb < 2 ; doingzomb++) { 537 if (!doingzomb) 538 p = LIST_FIRST(&allproc); 539 else 540 p = LIST_FIRST(&zombproc); 541 for (; p != 0; p = LIST_NEXT(p, p_list)) { 542 /* 543 * Show a user only their processes. 544 */ 545 if ((!ps_showallprocs) && p_trespass(cr1, p->p_ucred)) 546 continue; 547 /* 548 * Skip embryonic processes. 549 */ 550 if (p->p_stat == SIDL) 551 continue; 552 /* 553 * TODO - make more efficient (see notes below). 554 * do by session. 555 */ 556 switch (oidp->oid_number) { 557 case KERN_PROC_PGRP: 558 /* could do this by traversing pgrp */ 559 if (p->p_pgrp == NULL || 560 p->p_pgrp->pg_id != (pid_t)name[0]) 561 continue; 562 break; 563 564 case KERN_PROC_TTY: 565 if ((p->p_flag & P_CONTROLT) == 0 || 566 p->p_session == NULL || 567 p->p_session->s_ttyp == NULL || 568 dev2udev(p->p_session->s_ttyp->t_dev) != 569 (udev_t)name[0]) 570 continue; 571 break; 572 573 case KERN_PROC_UID: 574 if (p->p_ucred == NULL || 575 p->p_ucred->cr_uid != (uid_t)name[0]) 576 continue; 577 break; 578 579 case KERN_PROC_RUID: 580 if (p->p_ucred == NULL || 581 p->p_ucred->cr_ruid != (uid_t)name[0]) 582 continue; 583 break; 584 } 585 586 if (!PRISON_CHECK(cr1, p->p_ucred)) 587 continue; 588 PHOLD(p); 589 error = sysctl_out_proc(p, NULL, req, doingzomb); 590 PRELE(p); 591 if (error) 592 return (error); 593 } 594 } 595 596 /* 597 * Iterate over all active cpus and scan their thread list. Start 598 * with the next logical cpu and end with our original cpu. We 599 * migrate our own thread to each target cpu in order to safely scan 600 * its thread list. In the last loop we migrate back to our original 601 * cpu. 602 */ 603 origcpu = mycpu->gd_cpuid; 604 for (n = 1; ps_showallthreads && n <= ncpus; ++n) { 605 globaldata_t rgd; 606 int nid; 607 608 nid = (origcpu + n) % ncpus; 609 if ((smp_active_mask & (1 << nid)) == 0) 610 continue; 611 rgd = globaldata_find(nid); 612 lwkt_setcpu_self(rgd); 613 cpu_mb1(); /* CURRENT CPU HAS CHANGED */ 614 615 TAILQ_FOREACH(td, &mycpu->gd_tdallq, td_allq) { 616 if (td->td_proc) 617 continue; 618 switch (oidp->oid_number) { 619 case KERN_PROC_PGRP: 620 case KERN_PROC_TTY: 621 case KERN_PROC_UID: 622 case KERN_PROC_RUID: 623 continue; 624 default: 625 break; 626 } 627 lwkt_hold(td); 628 error = sysctl_out_proc(NULL, td, req, doingzomb); 629 lwkt_rele(td); 630 if (error) 631 return (error); 632 } 633 } 634 return (0); 635 } 636 637 /* 638 * This sysctl allows a process to retrieve the argument list or process 639 * title for another process without groping around in the address space 640 * of the other process. It also allow a process to set its own "process 641 * title to a string of its own choice. 642 */ 643 static int 644 sysctl_kern_proc_args(SYSCTL_HANDLER_ARGS) 645 { 646 int *name = (int*) arg1; 647 u_int namelen = arg2; 648 struct proc *p; 649 struct pargs *pa; 650 int error = 0; 651 struct ucred *cr1 = curproc->p_ucred; 652 653 if (namelen != 1) 654 return (EINVAL); 655 656 p = pfind((pid_t)name[0]); 657 if (!p) 658 return (0); 659 660 if ((!ps_argsopen) && p_trespass(cr1, p->p_ucred)) 661 return (0); 662 663 if (req->newptr && curproc != p) 664 return (EPERM); 665 666 if (req->oldptr && p->p_args != NULL) 667 error = SYSCTL_OUT(req, p->p_args->ar_args, p->p_args->ar_length); 668 if (req->newptr == NULL) 669 return (error); 670 671 if (p->p_args && --p->p_args->ar_ref == 0) 672 FREE(p->p_args, M_PARGS); 673 p->p_args = NULL; 674 675 if (req->newlen + sizeof(struct pargs) > ps_arg_cache_limit) 676 return (error); 677 678 MALLOC(pa, struct pargs *, sizeof(struct pargs) + req->newlen, 679 M_PARGS, M_WAITOK); 680 pa->ar_ref = 1; 681 pa->ar_length = req->newlen; 682 error = SYSCTL_IN(req, pa->ar_args, req->newlen); 683 if (!error) 684 p->p_args = pa; 685 else 686 FREE(pa, M_PARGS); 687 return (error); 688 } 689 690 SYSCTL_NODE(_kern, KERN_PROC, proc, CTLFLAG_RD, 0, "Process table"); 691 692 SYSCTL_PROC(_kern_proc, KERN_PROC_ALL, all, CTLFLAG_RD|CTLTYPE_STRUCT, 693 0, 0, sysctl_kern_proc, "S,proc", "Return entire process table"); 694 695 SYSCTL_NODE(_kern_proc, KERN_PROC_PGRP, pgrp, CTLFLAG_RD, 696 sysctl_kern_proc, "Process table"); 697 698 SYSCTL_NODE(_kern_proc, KERN_PROC_TTY, tty, CTLFLAG_RD, 699 sysctl_kern_proc, "Process table"); 700 701 SYSCTL_NODE(_kern_proc, KERN_PROC_UID, uid, CTLFLAG_RD, 702 sysctl_kern_proc, "Process table"); 703 704 SYSCTL_NODE(_kern_proc, KERN_PROC_RUID, ruid, CTLFLAG_RD, 705 sysctl_kern_proc, "Process table"); 706 707 SYSCTL_NODE(_kern_proc, KERN_PROC_PID, pid, CTLFLAG_RD, 708 sysctl_kern_proc, "Process table"); 709 710 SYSCTL_NODE(_kern_proc, KERN_PROC_ARGS, args, CTLFLAG_RW | CTLFLAG_ANYBODY, 711 sysctl_kern_proc_args, "Process argument list"); 712