kern_sysctl.c revision 1.18
1 /* $NetBSD: kern_sysctl.c,v 1.18 1996/07/17 21:54:04 explorer Exp $ */ 2 3 /*- 4 * Copyright (c) 1982, 1986, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Mike Karels at Berkeley Software Design, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94 39 */ 40 41 /* 42 * sysctl system call. 43 */ 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/malloc.h> 49 #include <sys/proc.h> 50 #include <sys/file.h> 51 #include <sys/vnode.h> 52 #include <sys/unistd.h> 53 #include <sys/buf.h> 54 #include <sys/ioctl.h> 55 #include <sys/tty.h> 56 #include <sys/disklabel.h> 57 #include <vm/vm.h> 58 #include <sys/sysctl.h> 59 60 #include <sys/mount.h> 61 #include <sys/syscallargs.h> 62 63 /* 64 * Locking and stats 65 */ 66 static struct sysctl_lock { 67 int sl_lock; 68 int sl_want; 69 int sl_locked; 70 } memlock; 71 72 int 73 sys___sysctl(p, v, retval) 74 struct proc *p; 75 void *v; 76 register_t *retval; 77 { 78 register struct sys___sysctl_args /* { 79 syscallarg(int *) name; 80 syscallarg(u_int) namelen; 81 syscallarg(void *) old; 82 syscallarg(size_t *) oldlenp; 83 syscallarg(void *) new; 84 syscallarg(size_t) newlen; 85 } */ *uap = v; 86 int error, dolock = 1; 87 size_t savelen = 0, oldlen = 0; 88 sysctlfn *fn; 89 int name[CTL_MAXNAME]; 90 91 if (SCARG(uap, new) != NULL && 92 (error = suser(p->p_ucred, &p->p_acflag))) 93 return (error); 94 /* 95 * all top-level sysctl names are non-terminal 96 */ 97 if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 2) 98 return (EINVAL); 99 error = copyin(SCARG(uap, name), &name, 100 SCARG(uap, namelen) * sizeof(int)); 101 if (error) 102 return (error); 103 104 switch (name[0]) { 105 case CTL_KERN: 106 fn = kern_sysctl; 107 if (name[2] != KERN_VNODE) /* XXX */ 108 dolock = 0; 109 break; 110 case CTL_HW: 111 fn = hw_sysctl; 112 break; 113 case CTL_VM: 114 fn = vm_sysctl; 115 break; 116 case CTL_NET: 117 fn = net_sysctl; 118 break; 119 #ifdef notyet 120 case CTL_FS: 121 fn = fs_sysctl; 122 break; 123 #endif 124 case CTL_MACHDEP: 125 fn = cpu_sysctl; 126 break; 127 #ifdef DEBUG 128 case CTL_DEBUG: 129 fn = debug_sysctl; 130 break; 131 #endif 132 default: 133 return (EOPNOTSUPP); 134 } 135 136 if (SCARG(uap, oldlenp) && 137 (error = copyin(SCARG(uap, oldlenp), &oldlen, sizeof(oldlen)))) 138 return (error); 139 if (SCARG(uap, old) != NULL) { 140 if (!useracc(SCARG(uap, old), oldlen, B_WRITE)) 141 return (EFAULT); 142 while (memlock.sl_lock) { 143 memlock.sl_want = 1; 144 sleep((caddr_t)&memlock, PRIBIO+1); 145 memlock.sl_locked++; 146 } 147 memlock.sl_lock = 1; 148 if (dolock) 149 vslock(SCARG(uap, old), oldlen); 150 savelen = oldlen; 151 } 152 error = (*fn)(name + 1, SCARG(uap, namelen) - 1, SCARG(uap, old), 153 &oldlen, SCARG(uap, new), SCARG(uap, newlen), p); 154 if (SCARG(uap, old) != NULL) { 155 if (dolock) 156 vsunlock(SCARG(uap, old), savelen); 157 memlock.sl_lock = 0; 158 if (memlock.sl_want) { 159 memlock.sl_want = 0; 160 wakeup((caddr_t)&memlock); 161 } 162 } 163 if (error) 164 return (error); 165 if (SCARG(uap, oldlenp)) 166 error = copyout(&oldlen, SCARG(uap, oldlenp), sizeof(oldlen)); 167 return (error); 168 } 169 170 /* 171 * Attributes stored in the kernel. 172 */ 173 char hostname[MAXHOSTNAMELEN]; 174 int hostnamelen; 175 char domainname[MAXHOSTNAMELEN]; 176 int domainnamelen; 177 long hostid; 178 #ifdef INSECURE 179 int securelevel = -1; 180 #else 181 int securelevel = 0; 182 #endif 183 184 /* 185 * kernel related system variables. 186 */ 187 int 188 kern_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 189 int *name; 190 u_int namelen; 191 void *oldp; 192 size_t *oldlenp; 193 void *newp; 194 size_t newlen; 195 struct proc *p; 196 { 197 int error, level, inthostid; 198 int old_autonicetime; 199 extern char ostype[], osrelease[], version[]; 200 201 /* all sysctl names at this level are terminal */ 202 if (namelen != 1 && !(name[0] == KERN_PROC || name[0] == KERN_PROF)) 203 return (ENOTDIR); /* overloaded */ 204 205 switch (name[0]) { 206 case KERN_OSTYPE: 207 return (sysctl_rdstring(oldp, oldlenp, newp, ostype)); 208 case KERN_OSRELEASE: 209 return (sysctl_rdstring(oldp, oldlenp, newp, osrelease)); 210 case KERN_OSREV: 211 return (sysctl_rdint(oldp, oldlenp, newp, BSD)); 212 case KERN_VERSION: 213 return (sysctl_rdstring(oldp, oldlenp, newp, version)); 214 case KERN_MAXVNODES: 215 return(sysctl_int(oldp, oldlenp, newp, newlen, &desiredvnodes)); 216 case KERN_MAXPROC: 217 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxproc)); 218 case KERN_MAXFILES: 219 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxfiles)); 220 case KERN_ARGMAX: 221 return (sysctl_rdint(oldp, oldlenp, newp, ARG_MAX)); 222 case KERN_SECURELVL: 223 level = securelevel; 224 if ((error = sysctl_int(oldp, oldlenp, newp, newlen, &level)) || 225 newp == NULL) 226 return (error); 227 if (level < securelevel && p->p_pid != 1) 228 return (EPERM); 229 securelevel = level; 230 return (0); 231 case KERN_HOSTNAME: 232 error = sysctl_string(oldp, oldlenp, newp, newlen, 233 hostname, sizeof(hostname)); 234 if (newp && !error) 235 hostnamelen = newlen; 236 return (error); 237 case KERN_DOMAINNAME: 238 error = sysctl_string(oldp, oldlenp, newp, newlen, 239 domainname, sizeof(domainname)); 240 if (newp && !error) 241 domainnamelen = newlen; 242 return (error); 243 case KERN_HOSTID: 244 inthostid = hostid; /* XXX assumes sizeof long <= sizeof int */ 245 error = sysctl_int(oldp, oldlenp, newp, newlen, &inthostid); 246 hostid = inthostid; 247 return (error); 248 case KERN_CLOCKRATE: 249 return (sysctl_clockrate(oldp, oldlenp)); 250 case KERN_BOOTTIME: 251 return (sysctl_rdstruct(oldp, oldlenp, newp, &boottime, 252 sizeof(struct timeval))); 253 case KERN_VNODE: 254 return (sysctl_vnode(oldp, oldlenp)); 255 case KERN_PROC: 256 return (sysctl_doproc(name + 1, namelen - 1, oldp, oldlenp)); 257 case KERN_FILE: 258 return (sysctl_file(oldp, oldlenp)); 259 #ifdef GPROF 260 case KERN_PROF: 261 return (sysctl_doprof(name + 1, namelen - 1, oldp, oldlenp, 262 newp, newlen)); 263 #endif 264 case KERN_POSIX1: 265 return (sysctl_rdint(oldp, oldlenp, newp, _POSIX_VERSION)); 266 case KERN_NGROUPS: 267 return (sysctl_rdint(oldp, oldlenp, newp, NGROUPS_MAX)); 268 case KERN_JOB_CONTROL: 269 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 270 case KERN_SAVED_IDS: 271 #ifdef _POSIX_SAVED_IDS 272 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 273 #else 274 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 275 #endif 276 case KERN_MAXPARTITIONS: 277 return (sysctl_rdint(oldp, oldlenp, newp, MAXPARTITIONS)); 278 case KERN_RAWPARTITION: 279 return (sysctl_rdint(oldp, oldlenp, newp, RAW_PART)); 280 case KERN_NTPTIME: 281 return (sysctl_ntptime(oldp, oldlenp)); 282 case KERN_AUTONICETIME: 283 old_autonicetime = autonicetime; 284 error = sysctl_int(oldp, oldlenp, newp, newlen, &autonicetime); 285 if (autonicetime < 0) 286 autonicetime = old_autonicetime; 287 return (error); 288 case KERN_AUTONICEVAL: 289 error = sysctl_int(oldp, oldlenp, newp, newlen, &autoniceval); 290 if (autoniceval < PRIO_MIN) 291 autoniceval = PRIO_MIN; 292 if (autoniceval > PRIO_MAX) 293 autoniceval = PRIO_MAX; 294 return (error); 295 default: 296 return (EOPNOTSUPP); 297 } 298 /* NOTREACHED */ 299 } 300 301 /* 302 * hardware related system variables. 303 */ 304 int 305 hw_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 306 int *name; 307 u_int namelen; 308 void *oldp; 309 size_t *oldlenp; 310 void *newp; 311 size_t newlen; 312 struct proc *p; 313 { 314 extern char machine[], cpu_model[]; 315 316 /* all sysctl names at this level are terminal */ 317 if (namelen != 1) 318 return (ENOTDIR); /* overloaded */ 319 320 switch (name[0]) { 321 case HW_MACHINE: 322 return (sysctl_rdstring(oldp, oldlenp, newp, machine)); 323 case HW_MODEL: 324 return (sysctl_rdstring(oldp, oldlenp, newp, cpu_model)); 325 case HW_NCPU: 326 return (sysctl_rdint(oldp, oldlenp, newp, 1)); /* XXX */ 327 case HW_BYTEORDER: 328 return (sysctl_rdint(oldp, oldlenp, newp, BYTE_ORDER)); 329 case HW_PHYSMEM: 330 return (sysctl_rdint(oldp, oldlenp, newp, ctob(physmem))); 331 case HW_USERMEM: 332 return (sysctl_rdint(oldp, oldlenp, newp, 333 ctob(physmem - cnt.v_wire_count))); 334 case HW_PAGESIZE: 335 return (sysctl_rdint(oldp, oldlenp, newp, PAGE_SIZE)); 336 default: 337 return (EOPNOTSUPP); 338 } 339 /* NOTREACHED */ 340 } 341 342 #ifdef DEBUG 343 /* 344 * Debugging related system variables. 345 */ 346 struct ctldebug debug0, debug1, debug2, debug3, debug4; 347 struct ctldebug debug5, debug6, debug7, debug8, debug9; 348 struct ctldebug debug10, debug11, debug12, debug13, debug14; 349 struct ctldebug debug15, debug16, debug17, debug18, debug19; 350 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 351 &debug0, &debug1, &debug2, &debug3, &debug4, 352 &debug5, &debug6, &debug7, &debug8, &debug9, 353 &debug10, &debug11, &debug12, &debug13, &debug14, 354 &debug15, &debug16, &debug17, &debug18, &debug19, 355 }; 356 int 357 debug_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 358 int *name; 359 u_int namelen; 360 void *oldp; 361 size_t *oldlenp; 362 void *newp; 363 size_t newlen; 364 struct proc *p; 365 { 366 struct ctldebug *cdp; 367 368 /* all sysctl names at this level are name and field */ 369 if (namelen != 2) 370 return (ENOTDIR); /* overloaded */ 371 cdp = debugvars[name[0]]; 372 if (cdp->debugname == 0) 373 return (EOPNOTSUPP); 374 switch (name[1]) { 375 case CTL_DEBUG_NAME: 376 return (sysctl_rdstring(oldp, oldlenp, newp, cdp->debugname)); 377 case CTL_DEBUG_VALUE: 378 return (sysctl_int(oldp, oldlenp, newp, newlen, cdp->debugvar)); 379 default: 380 return (EOPNOTSUPP); 381 } 382 /* NOTREACHED */ 383 } 384 #endif /* DEBUG */ 385 386 /* 387 * Validate parameters and get old / set new parameters 388 * for an integer-valued sysctl function. 389 */ 390 int 391 sysctl_int(oldp, oldlenp, newp, newlen, valp) 392 void *oldp; 393 size_t *oldlenp; 394 void *newp; 395 size_t newlen; 396 int *valp; 397 { 398 int error = 0; 399 400 if (oldp && *oldlenp < sizeof(int)) 401 return (ENOMEM); 402 if (newp && newlen != sizeof(int)) 403 return (EINVAL); 404 *oldlenp = sizeof(int); 405 if (oldp) 406 error = copyout(valp, oldp, sizeof(int)); 407 if (error == 0 && newp) 408 error = copyin(newp, valp, sizeof(int)); 409 return (error); 410 } 411 412 /* 413 * As above, but read-only. 414 */ 415 int 416 sysctl_rdint(oldp, oldlenp, newp, val) 417 void *oldp; 418 size_t *oldlenp; 419 void *newp; 420 int val; 421 { 422 int error = 0; 423 424 if (oldp && *oldlenp < sizeof(int)) 425 return (ENOMEM); 426 if (newp) 427 return (EPERM); 428 *oldlenp = sizeof(int); 429 if (oldp) 430 error = copyout((caddr_t)&val, oldp, sizeof(int)); 431 return (error); 432 } 433 434 /* 435 * Validate parameters and get old / set new parameters 436 * for a string-valued sysctl function. 437 */ 438 int 439 sysctl_string(oldp, oldlenp, newp, newlen, str, maxlen) 440 void *oldp; 441 size_t *oldlenp; 442 void *newp; 443 size_t newlen; 444 char *str; 445 int maxlen; 446 { 447 int len, error = 0; 448 449 len = strlen(str) + 1; 450 if (oldp && *oldlenp < len) 451 return (ENOMEM); 452 if (newp && newlen >= maxlen) 453 return (EINVAL); 454 if (oldp) { 455 *oldlenp = len; 456 error = copyout(str, oldp, len); 457 } 458 if (error == 0 && newp) { 459 error = copyin(newp, str, newlen); 460 str[newlen] = 0; 461 } 462 return (error); 463 } 464 465 /* 466 * As above, but read-only. 467 */ 468 int 469 sysctl_rdstring(oldp, oldlenp, newp, str) 470 void *oldp; 471 size_t *oldlenp; 472 void *newp; 473 char *str; 474 { 475 int len, error = 0; 476 477 len = strlen(str) + 1; 478 if (oldp && *oldlenp < len) 479 return (ENOMEM); 480 if (newp) 481 return (EPERM); 482 *oldlenp = len; 483 if (oldp) 484 error = copyout(str, oldp, len); 485 return (error); 486 } 487 488 /* 489 * Validate parameters and get old / set new parameters 490 * for a structure oriented sysctl function. 491 */ 492 int 493 sysctl_struct(oldp, oldlenp, newp, newlen, sp, len) 494 void *oldp; 495 size_t *oldlenp; 496 void *newp; 497 size_t newlen; 498 void *sp; 499 int len; 500 { 501 int error = 0; 502 503 if (oldp && *oldlenp < len) 504 return (ENOMEM); 505 if (newp && newlen > len) 506 return (EINVAL); 507 if (oldp) { 508 *oldlenp = len; 509 error = copyout(sp, oldp, len); 510 } 511 if (error == 0 && newp) 512 error = copyin(newp, sp, len); 513 return (error); 514 } 515 516 /* 517 * Validate parameters and get old parameters 518 * for a structure oriented sysctl function. 519 */ 520 int 521 sysctl_rdstruct(oldp, oldlenp, newp, sp, len) 522 void *oldp; 523 size_t *oldlenp; 524 void *newp, *sp; 525 int len; 526 { 527 int error = 0; 528 529 if (oldp && *oldlenp < len) 530 return (ENOMEM); 531 if (newp) 532 return (EPERM); 533 *oldlenp = len; 534 if (oldp) 535 error = copyout(sp, oldp, len); 536 return (error); 537 } 538 539 /* 540 * Get file structures. 541 */ 542 int 543 sysctl_file(where, sizep) 544 char *where; 545 size_t *sizep; 546 { 547 int buflen, error; 548 struct file *fp; 549 char *start = where; 550 551 buflen = *sizep; 552 if (where == NULL) { 553 /* 554 * overestimate by 10 files 555 */ 556 *sizep = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 557 return (0); 558 } 559 560 /* 561 * first copyout filehead 562 */ 563 if (buflen < sizeof(filehead)) { 564 *sizep = 0; 565 return (0); 566 } 567 error = copyout((caddr_t)&filehead, where, sizeof(filehead)); 568 if (error) 569 return (error); 570 buflen -= sizeof(filehead); 571 where += sizeof(filehead); 572 573 /* 574 * followed by an array of file structures 575 */ 576 for (fp = filehead.lh_first; fp != 0; fp = fp->f_list.le_next) { 577 if (buflen < sizeof(struct file)) { 578 *sizep = where - start; 579 return (ENOMEM); 580 } 581 error = copyout((caddr_t)fp, where, sizeof (struct file)); 582 if (error) 583 return (error); 584 buflen -= sizeof(struct file); 585 where += sizeof(struct file); 586 } 587 *sizep = where - start; 588 return (0); 589 } 590 591 /* 592 * try over estimating by 5 procs 593 */ 594 #define KERN_PROCSLOP (5 * sizeof (struct kinfo_proc)) 595 596 int 597 sysctl_doproc(name, namelen, where, sizep) 598 int *name; 599 u_int namelen; 600 char *where; 601 size_t *sizep; 602 { 603 register struct proc *p; 604 register struct kinfo_proc *dp = (struct kinfo_proc *)where; 605 register int needed = 0; 606 int buflen = where != NULL ? *sizep : 0; 607 int doingzomb; 608 struct eproc eproc; 609 int error = 0; 610 611 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 612 return (EINVAL); 613 p = allproc.lh_first; 614 doingzomb = 0; 615 again: 616 for (; p != 0; p = p->p_list.le_next) { 617 /* 618 * Skip embryonic processes. 619 */ 620 if (p->p_stat == SIDL) 621 continue; 622 /* 623 * TODO - make more efficient (see notes below). 624 * do by session. 625 */ 626 switch (name[0]) { 627 628 case KERN_PROC_PID: 629 /* could do this with just a lookup */ 630 if (p->p_pid != (pid_t)name[1]) 631 continue; 632 break; 633 634 case KERN_PROC_PGRP: 635 /* could do this by traversing pgrp */ 636 if (p->p_pgrp->pg_id != (pid_t)name[1]) 637 continue; 638 break; 639 640 case KERN_PROC_TTY: 641 if ((p->p_flag & P_CONTROLT) == 0 || 642 p->p_session->s_ttyp == NULL || 643 p->p_session->s_ttyp->t_dev != (dev_t)name[1]) 644 continue; 645 break; 646 647 case KERN_PROC_UID: 648 if (p->p_ucred->cr_uid != (uid_t)name[1]) 649 continue; 650 break; 651 652 case KERN_PROC_RUID: 653 if (p->p_cred->p_ruid != (uid_t)name[1]) 654 continue; 655 break; 656 } 657 if (buflen >= sizeof(struct kinfo_proc)) { 658 fill_eproc(p, &eproc); 659 error = copyout((caddr_t)p, &dp->kp_proc, 660 sizeof(struct proc)); 661 if (error) 662 return (error); 663 error = copyout((caddr_t)&eproc, &dp->kp_eproc, 664 sizeof(eproc)); 665 if (error) 666 return (error); 667 dp++; 668 buflen -= sizeof(struct kinfo_proc); 669 } 670 needed += sizeof(struct kinfo_proc); 671 } 672 if (doingzomb == 0) { 673 p = zombproc.lh_first; 674 doingzomb++; 675 goto again; 676 } 677 if (where != NULL) { 678 *sizep = (caddr_t)dp - where; 679 if (needed > *sizep) 680 return (ENOMEM); 681 } else { 682 needed += KERN_PROCSLOP; 683 *sizep = needed; 684 } 685 return (0); 686 } 687 688 /* 689 * Fill in an eproc structure for the specified process. 690 */ 691 void 692 fill_eproc(p, ep) 693 register struct proc *p; 694 register struct eproc *ep; 695 { 696 register struct tty *tp; 697 698 ep->e_paddr = p; 699 ep->e_sess = p->p_pgrp->pg_session; 700 ep->e_pcred = *p->p_cred; 701 ep->e_ucred = *p->p_ucred; 702 if (p->p_stat == SIDL || p->p_stat == SZOMB) { 703 ep->e_vm.vm_rssize = 0; 704 ep->e_vm.vm_tsize = 0; 705 ep->e_vm.vm_dsize = 0; 706 ep->e_vm.vm_ssize = 0; 707 /* ep->e_vm.vm_pmap = XXX; */ 708 } else { 709 register struct vmspace *vm = p->p_vmspace; 710 711 #ifdef pmap_resident_count 712 ep->e_vm.vm_rssize = pmap_resident_count(&vm->vm_pmap); /*XXX*/ 713 #else 714 ep->e_vm.vm_rssize = vm->vm_rssize; 715 #endif 716 ep->e_vm.vm_tsize = vm->vm_tsize; 717 ep->e_vm.vm_dsize = vm->vm_dsize; 718 ep->e_vm.vm_ssize = vm->vm_ssize; 719 ep->e_vm.vm_pmap = vm->vm_pmap; 720 } 721 if (p->p_pptr) 722 ep->e_ppid = p->p_pptr->p_pid; 723 else 724 ep->e_ppid = 0; 725 ep->e_pgid = p->p_pgrp->pg_id; 726 ep->e_jobc = p->p_pgrp->pg_jobc; 727 if ((p->p_flag & P_CONTROLT) && 728 (tp = ep->e_sess->s_ttyp)) { 729 ep->e_tdev = tp->t_dev; 730 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 731 ep->e_tsess = tp->t_session; 732 } else 733 ep->e_tdev = NODEV; 734 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 735 if (SESS_LEADER(p)) 736 ep->e_flag |= EPROC_SLEADER; 737 if (p->p_wmesg) 738 strncpy(ep->e_wmesg, p->p_wmesg, WMESGLEN); 739 ep->e_xsize = ep->e_xrssize = 0; 740 ep->e_xccount = ep->e_xswrss = 0; 741 } 742 743
Indexes created Sun Sep 21 14:09:52 GMT 2025