sysctl.c revision 1.53
1/* $OpenBSD: sysctl.c,v 1.53 2000/06/30 16:00:10 millert Exp $ */ 2/* $NetBSD: sysctl.c,v 1.9 1995/09/30 07:12:50 thorpej Exp $ */ 3 4/* 5 * Copyright (c) 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37#ifndef lint 38static char copyright[] = 39"@(#) Copyright (c) 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41#endif /* not lint */ 42 43#ifndef lint 44#if 0 45static char sccsid[] = "@(#)sysctl.c 8.5 (Berkeley) 5/9/95"; 46#else 47static char *rcsid = "$OpenBSD: sysctl.c,v 1.53 2000/06/30 16:00:10 millert Exp $"; 48#endif 49#endif /* not lint */ 50 51#include <sys/param.h> 52#include <sys/gmon.h> 53#include <sys/mount.h> 54#include <sys/stat.h> 55#include <sys/sysctl.h> 56#include <sys/socket.h> 57#include <vm/vm_param.h> 58#include <machine/cpu.h> 59#include <net/route.h> 60 61#include <netinet/in.h> 62#include <netinet/in_systm.h> 63#include <netinet/ip.h> 64#include <netinet/in_pcb.h> 65#include <netinet/ip_icmp.h> 66#include <netinet/ip_ipip.h> 67#include <netinet/ip_ether.h> 68#include <netinet/ip_ah.h> 69#include <netinet/ip_esp.h> 70#include <netinet/icmp_var.h> 71#include <netinet/ip_var.h> 72#include <netinet/udp.h> 73#include <netinet/udp_var.h> 74#include <netinet/tcp.h> 75#include <netinet/tcp_timer.h> 76#include <netinet/tcp_var.h> 77#include <netinet/ip_gre.h> 78 79#ifdef INET6 80#include <netinet/ip6.h> 81#include <netinet/icmp6.h> 82#include <netinet6/ip6_var.h> 83#include <netinet6/pim6_var.h> 84#endif 85 86#ifdef UVM 87#include <uvm/uvm_swap_encrypt.h> 88#endif 89 90#include <ufs/ufs/quota.h> 91#include <ufs/ufs/inode.h> 92#include <ufs/ffs/fs.h> 93#include <ufs/ffs/ffs_extern.h> 94 95#include <nfs/rpcv2.h> 96#include <nfs/nfsproto.h> 97#include <nfs/nfs.h> 98 99#include <netipx/ipx.h> 100#include <netipx/ipx_var.h> 101#include <netipx/spx_var.h> 102#include <ddb/db_var.h> 103#include <dev/rndvar.h> 104 105#include <err.h> 106#include <errno.h> 107#include <stdio.h> 108#include <stdlib.h> 109#include <string.h> 110#include <ctype.h> 111 112#ifdef CPU_BIOS 113#include <machine/biosvar.h> 114#endif 115 116struct ctlname topname[] = CTL_NAMES; 117struct ctlname kernname[] = CTL_KERN_NAMES; 118struct ctlname vmname[] = CTL_VM_NAMES; 119struct ctlname fsname[] = CTL_FS_NAMES; 120struct ctlname netname[] = CTL_NET_NAMES; 121struct ctlname hwname[] = CTL_HW_NAMES; 122struct ctlname username[] = CTL_USER_NAMES; 123struct ctlname debugname[CTL_DEBUG_MAXID]; 124struct ctlname *vfsname; 125#ifdef CTL_MACHDEP_NAMES 126struct ctlname machdepname[] = CTL_MACHDEP_NAMES; 127#endif 128struct ctlname ddbname[] = CTL_DDB_NAMES; 129char names[BUFSIZ]; 130int lastused; 131 132struct list { 133 struct ctlname *list; 134 int size; 135}; 136struct list toplist = { topname, CTL_MAXID }; 137struct list secondlevel[] = { 138 { 0, 0 }, /* CTL_UNSPEC */ 139 { kernname, KERN_MAXID }, /* CTL_KERN */ 140 { vmname, VM_MAXID }, /* CTL_VM */ 141 { fsname, FS_MAXID }, /* CTL_FS */ 142 { netname, NET_MAXID }, /* CTL_NET */ 143 { 0, CTL_DEBUG_MAXID }, /* CTL_DEBUG */ 144 { hwname, HW_MAXID }, /* CTL_HW */ 145#ifdef CTL_MACHDEP_NAMES 146 { machdepname, CPU_MAXID }, /* CTL_MACHDEP */ 147#else 148 { 0, 0 }, /* CTL_MACHDEP */ 149#endif 150 { username, USER_MAXID }, /* CTL_USER_NAMES */ 151 { ddbname, DBCTL_MAXID }, /* CTL_DDB_NAMES */ 152 { 0, 0 }, /* CTL_VFS */ 153}; 154 155int Aflag, aflag, nflag, wflag; 156 157/* 158 * Variables requiring special processing. 159 */ 160#define CLOCK 0x00000001 161#define BOOTTIME 0x00000002 162#define CHRDEV 0x00000004 163#define BLKDEV 0x00000008 164#define RNDSTATS 0x00000010 165#define BADDYNAMIC 0x00000020 166#define BIOSGEO 0x00000040 167#define BIOSDEV 0x00000080 168#define MAJ2DEV 0x00000100 169#define UNSIGNED 0x00000200 170 171/* prototypes */ 172void debuginit __P((void)); 173void listall __P((char *, struct list *)); 174void parse __P((char *, int)); 175void parse_baddynamic __P((int *, size_t, char *, void **, size_t *, int, int)); 176void usage __P((void)); 177int findname __P((char *, char *, char **, struct list *)); 178int sysctl_inet __P((char *, char **, int *, int, int *)); 179#ifdef INET6 180int sysctl_inet6 __P((char *, char **, int *, int, int *)); 181#endif 182int sysctl_ipx __P((char *, char **, int *, int, int *)); 183int sysctl_fs __P((char *, char **, int *, int, int *)); 184static int sysctl_vfs __P((char *, char **, int[], int, int *)); 185static int sysctl_vfsgen __P((char *, char **, int[], int, int *)); 186int sysctl_bios __P((char *, char **, int *, int, int *)); 187int sysctl_swpenc __P((char *, char **, int *, int, int *)); 188void vfsinit __P((void)); 189 190int 191main(argc, argv) 192 int argc; 193 char *argv[]; 194{ 195 int ch, lvl1; 196 197 while ((ch = getopt(argc, argv, "Aanw")) != -1) { 198 switch (ch) { 199 200 case 'A': 201 Aflag = 1; 202 break; 203 204 case 'a': 205 aflag = 1; 206 break; 207 208 case 'n': 209 nflag = 1; 210 break; 211 212 case 'w': 213 wflag = 1; 214 break; 215 216 default: 217 usage(); 218 } 219 } 220 argc -= optind; 221 argv += optind; 222 223 if (argc == 0 && (Aflag || aflag)) { 224 debuginit(); 225 vfsinit(); 226 for (lvl1 = 1; lvl1 < CTL_MAXID; lvl1++) 227 listall(topname[lvl1].ctl_name, &secondlevel[lvl1]); 228 exit(0); 229 } 230 if (argc == 0) 231 usage(); 232 for (; *argv != NULL; ++argv) 233 parse(*argv, 1); 234 exit(0); 235} 236 237/* 238 * List all variables known to the system. 239 */ 240void 241listall(prefix, lp) 242 char *prefix; 243 struct list *lp; 244{ 245 int lvl2; 246 char *cp, name[BUFSIZ]; 247 248 if (lp->list == NULL) 249 return; 250 (void)strncpy(name, prefix, BUFSIZ-1); 251 name[BUFSIZ-1] = '\0'; 252 cp = &name[strlen(name)]; 253 *cp++ = '.'; 254 for (lvl2 = 0; lvl2 < lp->size; lvl2++) { 255 if (lp->list[lvl2].ctl_name == NULL) 256 continue; 257 (void)strcpy(cp, lp->list[lvl2].ctl_name); 258 parse(name, Aflag); 259 } 260} 261 262/* 263 * Parse a name into a MIB entry. 264 * Lookup and print out the MIB entry if it exists. 265 * Set a new value if requested. 266 */ 267void 268parse(string, flags) 269 char *string; 270 int flags; 271{ 272 int indx, type, state, intval, len; 273 size_t size, newsize = 0; 274 int special = 0; 275 void *newval = 0; 276 quad_t quadval; 277 struct list *lp; 278 int mib[CTL_MAXNAME]; 279 char *cp, *bufp, buf[BUFSIZ]; 280 281 (void)strncpy(buf, string, sizeof(buf) - 1); 282 buf[sizeof(buf) - 1] = '\0'; 283 bufp = buf; 284 if ((cp = strchr(string, '=')) != NULL) { 285 if (!wflag) 286 errx(2, "must specify -w to set variables"); 287 *strchr(buf, '=') = '\0'; 288 *cp++ = '\0'; 289 while (isspace(*cp)) 290 cp++; 291 newval = cp; 292 newsize = strlen(cp); 293 } 294 if ((indx = findname(string, "top", &bufp, &toplist)) == -1) 295 return; 296 mib[0] = indx; 297 if (indx == CTL_VFS) 298 vfsinit(); 299 if (indx == CTL_DEBUG) 300 debuginit(); 301 lp = &secondlevel[indx]; 302 if (lp->list == 0) { 303 warnx("%s: class is not implemented", topname[indx].ctl_name); 304 return; 305 } 306 if (bufp == NULL) { 307 listall(topname[indx].ctl_name, lp); 308 return; 309 } 310 if ((indx = findname(string, "second", &bufp, lp)) == -1) 311 return; 312 mib[1] = indx; 313 type = lp->list[indx].ctl_type; 314 len = 2; 315 switch (mib[0]) { 316 317 case CTL_KERN: 318 switch (mib[1]) { 319 case KERN_PROF: 320 mib[2] = GPROF_STATE; 321 size = sizeof(state); 322 if (sysctl(mib, 3, &state, &size, NULL, 0) == -1) { 323 if (flags == 0) 324 return; 325 if (!nflag) 326 (void)printf("%s: ", string); 327 (void)puts("kernel is not compiled for profiling"); 328 return; 329 } 330 if (!nflag) 331 (void)printf("%s = %s\n", string, 332 state == GMON_PROF_OFF ? "off" : "running"); 333 return; 334 case KERN_VNODE: 335 case KERN_FILE: 336 if (flags == 0) 337 return; 338 warnx("use pstat to view %s information", string); 339 return; 340 case KERN_PROC: 341 if (flags == 0) 342 return; 343 warnx("use ps to view %s information", string); 344 return; 345 case KERN_NTPTIME: 346 if (flags == 0) 347 return; 348 warnx("use xntpdc to view %s information", string); 349 return; 350 case KERN_CLOCKRATE: 351 special |= CLOCK; 352 break; 353 case KERN_BOOTTIME: 354 special |= BOOTTIME; 355 break; 356 case KERN_RND: 357 special |= RNDSTATS; 358 break; 359 case KERN_HOSTID: 360 case KERN_ARND: 361 special |= UNSIGNED; 362 break; 363 } 364 break; 365 366 case CTL_HW: 367 break; 368 369 case CTL_VM: 370 if (mib[1] == VM_LOADAVG) { 371 double loads[3]; 372 373 getloadavg(loads, 3); 374 if (!nflag) 375 (void)printf("%s = ", string); 376 (void)printf("%.2f %.2f %.2f\n", loads[0], 377 loads[1], loads[2]); 378 return; 379 } else if (mib[1] == VM_PSSTRINGS) { 380 struct _ps_strings _ps; 381 382 len = sizeof(_ps); 383 if (sysctl(mib, 2, &_ps, &len, NULL, 0) == -1) { 384 if (flags == 0) 385 return; 386 if (!nflag) 387 (void)printf("%s: ", string); 388 (void)puts("can't find ps strings"); 389 return; 390 } 391 if (!nflag) 392 (void)printf("%s = ", string); 393 (void)printf("%p\n", _ps.val); 394 return; 395 } 396#ifdef UVM 397 else if (mib[1] == VM_SWAPENCRYPT) { 398 len = sysctl_swpenc(string, &bufp, mib, flags, &type); 399 if (len < 0) 400 return; 401 402 break; 403 } 404#endif 405 if (flags == 0) 406 return; 407 warnx("use vmstat or systat to view %s information", string); 408 return; 409 410 break; 411 412 case CTL_NET: 413 if (mib[1] == PF_INET) { 414 len = sysctl_inet(string, &bufp, mib, flags, &type); 415 if (len < 0) 416 return; 417 418 if ((mib[2] == IPPROTO_TCP && 419 mib[3] == TCPCTL_BADDYNAMIC) || 420 (mib[2] == IPPROTO_UDP && 421 mib[3] == UDPCTL_BADDYNAMIC)) { 422 423 special |= BADDYNAMIC; 424 425 if (newval != NULL) 426 parse_baddynamic(mib, len, string, 427 &newval, &newsize, flags, nflag); 428 } 429 break; 430 } 431#ifdef INET6 432 if (mib[1] == PF_INET6) { 433 len = sysctl_inet6(string, &bufp, mib, flags, &type); 434 if (len < 0) 435 return; 436 437 break; 438 } 439#endif 440 if (mib[1] == PF_IPX) { 441 len = sysctl_ipx(string, &bufp, mib, flags, &type); 442 if (len >= 0) 443 break; 444 return; 445 } 446 if (flags == 0) 447 return; 448 warnx("use netstat to view %s information", string); 449 return; 450 451 case CTL_DEBUG: 452 mib[2] = CTL_DEBUG_VALUE; 453 len = 3; 454 break; 455 456 case CTL_MACHDEP: 457#ifdef CPU_CONSDEV 458 if (mib[1] == CPU_CONSDEV) 459 special |= CHRDEV; 460#endif 461#ifdef CPU_BLK2CHR 462 if (mib[1] == CPU_BLK2CHR) { 463 if (bufp == NULL) 464 return; 465 mib[2] = makedev(atoi(bufp),0); 466 bufp = NULL; 467 len = 3; 468 special |= CHRDEV; 469 break; 470 } 471#endif 472#ifdef CPU_CHR2BLK 473 if (mib[1] == CPU_CHR2BLK) { 474 if (bufp == NULL) 475 return; 476 mib[2] = makedev(atoi(bufp),0); 477 bufp = NULL; 478 len = 3; 479 special |= BLKDEV; 480 break; 481 } 482#endif 483#ifdef CPU_BIOS 484 if (mib[1] == CPU_BIOS) { 485 len = sysctl_bios(string, &bufp, mib, flags, &type); 486 if (len < 0) 487 return; 488 if (mib[2] == BIOS_DEV) 489 special |= BIOSDEV; 490 if (mib[2] == BIOS_DISKINFO) 491 special |= BIOSGEO; 492 break; 493 } 494#endif 495 break; 496 497 case CTL_FS: 498 len = sysctl_fs(string, &bufp, mib, flags, &type); 499 if (len >= 0) 500 break; 501 return; 502 503 case CTL_VFS: 504 if (mib[1]) 505 len = sysctl_vfs(string, &bufp, mib, flags, &type); 506 else 507 len = sysctl_vfsgen(string, &bufp, mib, flags, &type); 508 if (len >= 0) { 509 if (type == CTLTYPE_STRUCT) { 510 if (flags) 511 warnx("use nfsstat to view %s information", 512 MOUNT_NFS); 513 return; 514 } else 515 break; 516 } 517 return; 518 519 case CTL_USER: 520 case CTL_DDB: 521 break; 522 523 default: 524 warnx("illegal top level value: %d", mib[0]); 525 return; 526 527 } 528 if (bufp) { 529 warnx("name %s in %s is unknown", bufp, string); 530 return; 531 } 532 if (newsize > 0) { 533 switch (type) { 534 case CTLTYPE_INT: 535 errno = 0; 536 if (special & UNSIGNED) 537 intval = strtoul(newval, &cp, 10); 538 else 539 intval = strtol(newval, &cp, 10); 540 if (*cp != '\0') { 541 warnx("%s: illegal value: %s", string, 542 (char *)newval); 543 return; 544 } 545 if (errno == ERANGE) { 546 warnx("%s: value %s out of range", string, 547 (char *)newval); 548 return; 549 } 550 newval = &intval; 551 newsize = sizeof(intval); 552 break; 553 554 case CTLTYPE_QUAD: 555 (void)sscanf(newval, "%qd", &quadval); 556 newval = &quadval; 557 newsize = sizeof(quadval); 558 break; 559 } 560 } 561 size = BUFSIZ; 562 if (sysctl(mib, len, buf, &size, newsize ? newval : 0, newsize) == -1) { 563 if (flags == 0) 564 return; 565 switch (errno) { 566 case EOPNOTSUPP: 567 warnx("%s: value is not available", string); 568 return; 569 case ENOTDIR: 570 warnx("%s: specification is incomplete", string); 571 return; 572 case ENOMEM: 573 warnx("%s: type is unknown to this program", string); 574 return; 575 case ENXIO: 576 if (special & BIOSGEO) 577 return; 578 default: 579 warn("%s", string); 580 return; 581 } 582 } 583 if (special & CLOCK) { 584 struct clockinfo *clkp = (struct clockinfo *)buf; 585 586 if (!nflag) 587 (void)printf("%s = ", string); 588 (void)printf( 589 "tick = %d, tickadj = %d, hz = %d, profhz = %d, stathz = %d\n", 590 clkp->tick, clkp->tickadj, clkp->hz, clkp->profhz, clkp->stathz); 591 return; 592 } 593 if (special & BOOTTIME) { 594 struct timeval *btp = (struct timeval *)buf; 595 time_t boottime; 596 597 if (!nflag) { 598 boottime = btp->tv_sec; 599 (void)printf("%s = %s", string, ctime(&boottime)); 600 } else 601 (void)printf("%ld\n", btp->tv_sec); 602 return; 603 } 604 if (special & BLKDEV) { 605 dev_t dev = *(dev_t *)buf; 606 607 if (!nflag) 608 (void)printf("%s = %s\n", string, 609 devname(dev, S_IFBLK)); 610 else 611 (void)printf("0x%x\n", dev); 612 return; 613 } 614 if (special & CHRDEV) { 615 dev_t dev = *(dev_t *)buf; 616 617 if (!nflag) 618 (void)printf("%s = %s\n", string, 619 devname(dev, S_IFCHR)); 620 else 621 (void)printf("0x%x\n", dev); 622 return; 623 } 624#ifdef CPU_BIOS 625 if (special & BIOSGEO) { 626 bios_diskinfo_t *pdi = (bios_diskinfo_t *)buf; 627 628 if (!nflag) 629 (void)printf("%s = ", string); 630 (void)printf("bootdev = 0x%x, " 631 "cylinders = %u, heads = %u, sectors = %u\n", 632 pdi->bsd_dev, pdi->bios_cylinders, pdi->bios_heads, 633 pdi->bios_sectors); 634 return; 635 } 636 if (special & BIOSDEV) { 637 int dev = *(int*)buf; 638 639 if (!nflag) 640 (void)printf("%s = ", string); 641 (void) printf("0x%02x\n", dev); 642 return; 643 } 644#endif 645 if (special & UNSIGNED) { 646 if (newsize == 0) { 647 if (!nflag) 648 (void)printf("%s = ", string); 649 (void)printf("%u\n", *(u_int *)buf); 650 } else { 651 if (!nflag) 652 (void)printf("%s: %u -> ", string, 653 *(u_int *)buf); 654 (void)printf("%u\n", *(u_int *)newval); 655 } 656 return; 657 } 658 if (special & RNDSTATS) { 659 struct rndstats *rndstats = (struct rndstats *)buf; 660 int i; 661 662 if (!nflag) 663 (void)printf("%s = ", string); 664 (void)printf( 665 "%qu %qu %qu %qu %qu %qu %qu %qu %qu %qu %qu %qu %qu %qu %qu %qu", 666 rndstats->rnd_total, 667 rndstats->rnd_used, rndstats->rnd_reads, 668 rndstats->arc4_reads, rndstats->arc4_nstirs, 669 rndstats->arc4_stirs, 670 rndstats->rnd_pad[0], 671 rndstats->rnd_pad[1], 672 rndstats->rnd_pad[2], 673 rndstats->rnd_pad[3], 674 rndstats->rnd_pad[4], 675 rndstats->rnd_waits, 676 rndstats->rnd_enqs, rndstats->rnd_deqs, 677 rndstats->rnd_drops, rndstats->rnd_drople); 678 for (i = 0; i < sizeof(rndstats->rnd_ed)/sizeof(rndstats->rnd_ed[0]); i++) 679 (void)printf(" %qu", rndstats->rnd_ed[i]); 680 for (i = 0; i < sizeof(rndstats->rnd_sc)/sizeof(rndstats->rnd_sc[0]); i++) 681 (void)printf(" %qu", rndstats->rnd_sc[i]); 682 for (i = 0; i < sizeof(rndstats->rnd_sb)/sizeof(rndstats->rnd_sb[0]); i++) 683 (void)printf(" %qu", rndstats->rnd_sb[i]); 684 printf("\n"); 685 return; 686 } 687 if (special & BADDYNAMIC) { 688 in_port_t port, lastport; 689 u_int32_t *baddynamic = (u_int32_t *)buf; 690 691 if (!nflag) 692 (void)printf("%s%s", string, newsize ? ": " : " = "); 693 lastport = 0; 694 for (port = IPPORT_RESERVED/2; port < IPPORT_RESERVED; port++) 695 if (DP_ISSET(baddynamic, port)) { 696 (void)printf("%s%hd", lastport ? "," : "", 697 port); 698 lastport = port; 699 } 700 if (newsize != 0) { 701 if (!nflag) 702 fputs(" -> ", stdout); 703 baddynamic = (u_int32_t *)newval; 704 lastport = 0; 705 for (port = IPPORT_RESERVED/2; port < IPPORT_RESERVED; 706 port++) 707 if (DP_ISSET(baddynamic, port)) { 708 (void)printf("%s%hd", 709 lastport ? "," : "", port); 710 lastport = port; 711 } 712 } 713 (void)putchar('\n'); 714 return; 715 } 716 switch (type) { 717 case CTLTYPE_INT: 718 if (newsize == 0) { 719 if (!nflag) 720 (void)printf("%s = ", string); 721 (void)printf("%d\n", *(int *)buf); 722 } else { 723 if (!nflag) 724 (void)printf("%s: %d -> ", string, 725 *(int *)buf); 726 (void)printf("%d\n", *(int *)newval); 727 } 728 return; 729 730 case CTLTYPE_STRING: 731 if (newsize == 0) { 732 if (!nflag) 733 (void)printf("%s = ", string); 734 (void)puts(buf); 735 } else { 736 if (!nflag) 737 (void)printf("%s: %s -> ", string, buf); 738 (void)puts((char *)newval); 739 } 740 return; 741 742 case CTLTYPE_QUAD: 743 if (newsize == 0) { 744 if (!nflag) 745 (void)printf("%s = ", string); 746 (void)printf("%qd\n", *(quad_t *)buf); 747 } else { 748 if (!nflag) 749 (void)printf("%s: %qd -> ", string, 750 *(quad_t *)buf); 751 (void)printf("%qd\n", *(quad_t *)newval); 752 } 753 return; 754 755 case CTLTYPE_STRUCT: 756 warnx("%s: unknown structure returned", string); 757 return; 758 759 default: 760 case CTLTYPE_NODE: 761 warnx("%s: unknown type returned", string); 762 return; 763 } 764} 765 766void 767parse_baddynamic(mib, len, string, newvalp, newsizep, flags, nflag) 768 int mib[]; 769 size_t len; 770 char *string; 771 void **newvalp; 772 size_t *newsizep; 773 int flags; 774 int nflag; 775{ 776 static u_int32_t newbaddynamic[DP_MAPSIZE]; 777 in_port_t port; 778 size_t size; 779 char action, *cp; 780 781 if (strchr((char *)*newvalp, '+') || strchr((char *)*newvalp, '-')) { 782 size = sizeof(newbaddynamic); 783 if (sysctl(mib, len, newbaddynamic, &size, 0, 0) == -1) { 784 if (flags == 0) 785 return; 786 if (!nflag) 787 (void)printf("%s: ", string); 788 (void)puts("kernel does contain bad dynamic port tables"); 789 return; 790 } 791 792 while (*newvalp && (cp = strsep((char **)newvalp, ", \t")) && *cp) { 793 if (*cp != '+' && *cp != '-') 794 errx(1, "cannot mix +/- with full list"); 795 action = *cp++; 796 port = atoi(cp); 797 if (port < IPPORT_RESERVED/2 || port >= IPPORT_RESERVED) 798 errx(1, "invalid port, range is %d to %d", 799 IPPORT_RESERVED/2, IPPORT_RESERVED-1); 800 if (action == '+') 801 DP_SET(newbaddynamic, port); 802 else 803 DP_CLR(newbaddynamic, port); 804 } 805 } else { 806 (void)memset((void *)newbaddynamic, 0, sizeof(newbaddynamic)); 807 while (*newvalp && (cp = strsep((char **)newvalp, ", \t")) && *cp) { 808 port = atoi(cp); 809 if (port < IPPORT_RESERVED/2 || port >= IPPORT_RESERVED) 810 errx(1, "invalid port, range is %d to %d", 811 IPPORT_RESERVED/2, IPPORT_RESERVED-1); 812 DP_SET(newbaddynamic, port); 813 } 814 } 815 816 *newvalp = (void *)newbaddynamic; 817 *newsizep = sizeof(newbaddynamic); 818} 819 820/* 821 * Initialize the set of debugging names 822 */ 823void 824debuginit() 825{ 826 int mib[3], loc, i; 827 size_t size; 828 829 if (secondlevel[CTL_DEBUG].list != 0) 830 return; 831 secondlevel[CTL_DEBUG].list = debugname; 832 mib[0] = CTL_DEBUG; 833 mib[2] = CTL_DEBUG_NAME; 834 for (loc = lastused, i = 0; i < CTL_DEBUG_MAXID; i++) { 835 mib[1] = i; 836 size = BUFSIZ - loc; 837 if (sysctl(mib, 3, &names[loc], &size, NULL, 0) == -1) 838 continue; 839 debugname[i].ctl_name = &names[loc]; 840 debugname[i].ctl_type = CTLTYPE_INT; 841 loc += size; 842 } 843 lastused = loc; 844} 845 846struct ctlname vfsgennames[] = CTL_VFSGENCTL_NAMES; 847struct ctlname ffsname[] = FFS_NAMES; 848struct ctlname nfsname[] = FS_NFS_NAMES; 849struct list *vfsvars; 850int *vfs_typenums; 851 852/* 853 * Initialize the set of filesystem names 854 */ 855void 856vfsinit() 857{ 858 int mib[4], maxtypenum, cnt, loc, size; 859 struct vfsconf vfc; 860 size_t buflen; 861 862 if (secondlevel[CTL_VFS].list != 0) 863 return; 864 mib[0] = CTL_VFS; 865 mib[1] = VFS_GENERIC; 866 mib[2] = VFS_MAXTYPENUM; 867 buflen = 4; 868 if (sysctl(mib, 3, &maxtypenum, &buflen, (void *)0, (size_t)0) < 0) 869 return; 870 maxtypenum++; /* + generic */ 871 if ((vfs_typenums = malloc(maxtypenum * sizeof(int))) == NULL) 872 return; 873 memset(vfs_typenums, 0, maxtypenum * sizeof(int)); 874 if ((vfsvars = malloc(maxtypenum * sizeof(*vfsvars))) == NULL) { 875 free(vfs_typenums); 876 return; 877 } 878 memset(vfsvars, 0, maxtypenum * sizeof(*vfsvars)); 879 if ((vfsname = malloc(maxtypenum * sizeof(*vfsname))) == NULL) { 880 free(vfs_typenums); 881 free(vfsvars); 882 return; 883 } 884 memset(vfsname, 0, maxtypenum * sizeof(*vfsname)); 885 mib[2] = VFS_CONF; 886 buflen = sizeof vfc; 887 for (loc = lastused, cnt = 1; cnt < maxtypenum; cnt++) { 888 mib[3] = cnt - 1; 889 if (sysctl(mib, 4, &vfc, &buflen, (void *)0, (size_t)0) < 0) { 890 if (errno == EOPNOTSUPP) 891 continue; 892 warn("vfsinit"); 893 free(vfsname); 894 return; 895 } 896 if (!strcmp(vfc.vfc_name, MOUNT_FFS)) { 897 vfsvars[cnt].list = ffsname; 898 vfsvars[cnt].size = FFS_MAXID; 899 } 900 if (!strcmp(vfc.vfc_name, MOUNT_NFS)) { 901 vfsvars[cnt].list = nfsname; 902 vfsvars[cnt].size = NFS_MAXID; 903 } 904 vfs_typenums[cnt] = vfc.vfc_typenum; 905 strcat(&names[loc], vfc.vfc_name); 906 vfsname[cnt].ctl_name = &names[loc]; 907 vfsname[cnt].ctl_type = CTLTYPE_NODE; 908 size = strlen(vfc.vfc_name) + 1; 909 loc += size; 910 } 911 lastused = loc; 912 913 vfsname[0].ctl_name = "mounts"; 914 vfsname[0].ctl_type = CTLTYPE_NODE; 915 vfsvars[0].list = vfsname + 1; 916 vfsvars[0].size = maxtypenum - 1; 917 918 secondlevel[CTL_VFS].list = vfsname; 919 secondlevel[CTL_VFS].size = maxtypenum; 920 return; 921} 922 923int 924sysctl_vfsgen(string, bufpp, mib, flags, typep) 925 char *string; 926 char **bufpp; 927 int mib[]; 928 int flags; 929 int *typep; 930{ 931 int indx; 932 size_t size; 933 struct vfsconf vfc; 934 935 if (*bufpp == NULL) { 936 listall(string, vfsvars); 937 return (-1); 938 } 939 940 if ((indx = findname(string, "third", bufpp, vfsvars)) == -1) 941 return (-1); 942 943 mib[1] = VFS_GENERIC; 944 mib[2] = VFS_CONF; 945 mib[3] = indx; 946 size = sizeof vfc; 947 if (sysctl(mib, 4, &vfc, &size, (void *)0, (size_t)0) < 0) { 948 if (errno != EOPNOTSUPP) 949 warn("vfs print"); 950 return -1; 951 } 952 if (flags == 0 && vfc.vfc_refcount == 0) 953 return -1; 954 if (!nflag) 955 fprintf(stdout, "%s has %d mounted instance%s\n", 956 string, vfc.vfc_refcount, 957 vfc.vfc_refcount != 1 ? "s" : ""); 958 else 959 fprintf(stdout, "%d\n", vfc.vfc_refcount); 960 961 return -1; 962} 963 964int 965sysctl_vfs(string, bufpp, mib, flags, typep) 966 char *string; 967 char **bufpp; 968 int mib[]; 969 int flags; 970 int *typep; 971{ 972 struct list *lp = &vfsvars[mib[1]]; 973 int indx; 974 975 if (lp->list == NULL) { 976 if (flags) 977 warnx("No variables defined for file system %s", string); 978 return(-1); 979 } 980 if (*bufpp == NULL) { 981 listall(string, lp); 982 return (-1); 983 } 984 if ((indx = findname(string, "third", bufpp, lp)) == -1) 985 return (-1); 986 987 mib[1] = vfs_typenums[mib[1]]; 988 mib[2] = indx; 989 *typep = lp->list[indx].ctl_type; 990 return (3); 991} 992 993struct ctlname posixname[] = CTL_FS_POSIX_NAMES; 994struct list fslist = { posixname, FS_POSIX_MAXID }; 995 996/* 997 * handle file system requests 998 */ 999int 1000sysctl_fs(string, bufpp, mib, flags, typep) 1001 char *string; 1002 char **bufpp; 1003 int mib[]; 1004 int flags; 1005 int *typep; 1006{ 1007 int indx; 1008 1009 if (*bufpp == NULL) { 1010 listall(string, &fslist); 1011 return(-1); 1012 } 1013 if ((indx = findname(string, "third", bufpp, &fslist)) == -1) 1014 return(-1); 1015 mib[2] = indx; 1016 *typep = fslist.list[indx].ctl_type; 1017 return(3); 1018} 1019 1020#ifdef CPU_BIOS 1021struct ctlname biosname[] = CTL_BIOS_NAMES; 1022struct list bioslist = { biosname, BIOS_MAXID }; 1023 1024/* 1025 * handle BIOS requests 1026 */ 1027int 1028sysctl_bios(string, bufpp, mib, flags, typep) 1029 char *string; 1030 char **bufpp; 1031 int mib[]; 1032 int flags; 1033 int *typep; 1034{ 1035 char *name; 1036 int indx; 1037 1038 if (*bufpp == NULL) { 1039 listall(string, &bioslist); 1040 return(-1); 1041 } 1042 if ((indx = findname(string, "third", bufpp, &bioslist)) == -1) 1043 return(-1); 1044 mib[2] = indx; 1045 if (indx == BIOS_DISKINFO) { 1046 if (*bufpp == NULL) { 1047 char name[BUFSIZ]; 1048 1049 /* scan all the bios devices */ 1050 for (indx = 0; indx < 256; indx++) { 1051 snprintf(name, sizeof(name), "%s.%u", 1052 string, indx); 1053 parse(name, 1); 1054 } 1055 return(-1); 1056 } 1057 if ((name = strsep(bufpp, ".")) == NULL) { 1058 warnx("%s: incomplete specification", string); 1059 return(-1); 1060 } 1061 mib[3] = atoi(name); 1062 *typep = CTLTYPE_STRUCT; 1063 return 4; 1064 } else { 1065 *typep = bioslist.list[indx].ctl_type; 1066 return(3); 1067 } 1068} 1069#endif 1070 1071#ifdef UVM 1072struct ctlname swpencname[] = CTL_SWPENC_NAMES; 1073struct list swpenclist = { swpencname, SWPENC_MAXID }; 1074 1075/* 1076 * handle swap encrypt requests 1077 */ 1078int 1079sysctl_swpenc(string, bufpp, mib, flags, typep) 1080 char *string; 1081 char **bufpp; 1082 int mib[]; 1083 int flags; 1084 int *typep; 1085{ 1086 char *name; 1087 int indx; 1088 1089 if (*bufpp == NULL) { 1090 listall(string, &swpenclist); 1091 return(-1); 1092 } 1093 if ((indx = findname(string, "third", bufpp, &swpenclist)) == -1) 1094 return(-1); 1095 mib[2] = indx; 1096 *typep = swpenclist.list[indx].ctl_type; 1097 return(3); 1098} 1099#endif 1100 1101struct ctlname inetname[] = CTL_IPPROTO_NAMES; 1102struct ctlname ipname[] = IPCTL_NAMES; 1103struct ctlname icmpname[] = ICMPCTL_NAMES; 1104struct ctlname ipipname[] = IPIPCTL_NAMES; 1105struct ctlname tcpname[] = TCPCTL_NAMES; 1106struct ctlname udpname[] = UDPCTL_NAMES; 1107struct ctlname espname[] = ESPCTL_NAMES; 1108struct ctlname ahname[] = AHCTL_NAMES; 1109struct ctlname etheripname[] = ETHERIPCTL_NAMES; 1110struct ctlname grename[] = GRECTL_NAMES; 1111struct ctlname mobileipname[] = MOBILEIPCTL_NAMES; 1112struct list inetlist = { inetname, IPPROTO_MAXID }; 1113struct list inetvars[] = { 1114 { ipname, IPCTL_MAXID }, /* ip */ 1115 { icmpname, ICMPCTL_MAXID }, /* icmp */ 1116 { 0, 0 }, /* igmp */ 1117 { 0, 0 }, /* ggmp */ 1118 { ipipname, IPIPCTL_MAXID }, /* ipencap */ 1119 { 0, 0 }, 1120 { tcpname, TCPCTL_MAXID }, /* tcp */ 1121 { 0, 0 }, 1122 { 0, 0 }, /* egp */ 1123 { 0, 0 }, 1124 { 0, 0 }, 1125 { 0, 0 }, 1126 { 0, 0 }, /* pup */ 1127 { 0, 0 }, 1128 { 0, 0 }, 1129 { 0, 0 }, 1130 { 0, 0 }, 1131 { udpname, UDPCTL_MAXID }, /* udp */ 1132 { 0, 0 }, 1133 { 0, 0 }, 1134 { 0, 0 }, 1135 { 0, 0 }, 1136 { 0, 0 }, 1137 { 0, 0 }, 1138 { 0, 0 }, 1139 { 0, 0 }, 1140 { 0, 0 }, 1141 { 0, 0 }, 1142 { 0, 0 }, 1143 { 0, 0 }, 1144 { 0, 0 }, 1145 { 0, 0 }, 1146 { 0, 0 }, 1147 { 0, 0 }, 1148 { 0, 0 }, 1149 { 0, 0 }, 1150 { 0, 0 }, 1151 { 0, 0 }, 1152 { 0, 0 }, 1153 { 0, 0 }, 1154 { 0, 0 }, 1155 { 0, 0 }, 1156 { 0, 0 }, 1157 { 0, 0 }, 1158 { 0, 0 }, 1159 { 0, 0 }, 1160 { 0, 0 }, 1161 { grename, GRECTL_MAXID }, /* GRE */ 1162 { 0, 0 }, 1163 { 0, 0 }, 1164 { espname, ESPCTL_MAXID }, /* esp */ 1165 { ahname, AHCTL_MAXID }, /* ah */ 1166 { 0, 0 }, 1167 { 0, 0 }, 1168 { 0, 0 }, 1169 { mobileipname, MOBILEIPCTL_MAXID }, /* mobileip */ 1170 { 0, 0 }, 1171 { 0, 0 }, 1172 { 0, 0 }, 1173 { 0, 0 }, 1174 { 0, 0 }, 1175 { 0, 0 }, 1176 { 0, 0 }, 1177 { 0, 0 }, 1178 { 0, 0 }, 1179 { 0, 0 }, 1180 { 0, 0 }, 1181 { 0, 0 }, 1182 { 0, 0 }, 1183 { 0, 0 }, 1184 { 0, 0 }, 1185 { 0, 0 }, 1186 { 0, 0 }, 1187 { 0, 0 }, 1188 { 0, 0 }, 1189 { 0, 0 }, 1190 { 0, 0 }, 1191 { 0, 0 }, 1192 { 0, 0 }, 1193 { 0, 0 }, 1194 { 0, 0 }, 1195 { 0, 0 }, 1196 { 0, 0 }, 1197 { 0, 0 }, 1198 { 0, 0 }, 1199 { 0, 0 }, 1200 { 0, 0 }, 1201 { 0, 0 }, 1202 { 0, 0 }, 1203 { 0, 0 }, 1204 { 0, 0 }, 1205 { 0, 0 }, 1206 { 0, 0 }, 1207 { 0, 0 }, 1208 { 0, 0 }, 1209 { 0, 0 }, 1210 { 0, 0 }, 1211 { etheripname, ETHERIPCTL_MAXID }, 1212}; 1213 1214/* 1215 * handle internet requests 1216 */ 1217int 1218sysctl_inet(string, bufpp, mib, flags, typep) 1219 char *string; 1220 char **bufpp; 1221 int mib[]; 1222 int flags; 1223 int *typep; 1224{ 1225 struct list *lp; 1226 int indx; 1227 1228 if (*bufpp == NULL) { 1229 listall(string, &inetlist); 1230 return(-1); 1231 } 1232 if ((indx = findname(string, "third", bufpp, &inetlist)) == -1) 1233 return(-1); 1234 mib[2] = indx; 1235 if (indx < IPPROTO_MAXID && inetvars[indx].list != NULL) 1236 lp = &inetvars[indx]; 1237 else if (!flags) 1238 return(-1); 1239 else { 1240 warnx("%s: no variables defined for this protocol", string); 1241 return(-1); 1242 } 1243 if (*bufpp == NULL) { 1244 listall(string, lp); 1245 return(-1); 1246 } 1247 if ((indx = findname(string, "fourth", bufpp, lp)) == -1) 1248 return(-1); 1249 mib[3] = indx; 1250 *typep = lp->list[indx].ctl_type; 1251 return(4); 1252} 1253 1254#ifdef INET6 1255struct ctlname inet6name[] = CTL_IPV6PROTO_NAMES; 1256struct ctlname ip6name[] = IPV6CTL_NAMES; 1257struct ctlname icmp6name[] = ICMPV6CTL_NAMES; 1258struct ctlname pim6name[] = PIM6CTL_NAMES; 1259struct list inet6list = { inet6name, IPV6PROTO_MAXID }; 1260struct list inet6vars[] = { 1261/*0*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1262 { 0, 0 }, 1263 { 0, 0 }, 1264 { 0, 0 }, 1265 { 0, 0 }, 1266 { 0, 0 }, 1267/*10*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1268 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1269/*20*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1270 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1271/*30*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1272 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1273/*40*/ { 0, 0 }, 1274 { ip6name, IPV6CTL_MAXID }, /* ipv6 */ 1275 { 0, 0 }, 1276 { 0, 0 }, 1277 { 0, 0 }, 1278 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1279/*50*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1280 { 0, 0 }, 1281 { 0, 0 }, 1282 { 0, 0 }, 1283 { icmp6name, ICMPV6CTL_MAXID }, /* icmp6 */ 1284 { 0, 0 }, 1285/*60*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1286 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1287/*70*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1288 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1289/*80*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1290 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1291/*90*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1292 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, 1293/*100*/ { 0, 0 }, 1294 { 0, 0 }, 1295 { 0, 0 }, 1296 { pim6name, PIM6CTL_MAXID }, /* pim6 */ 1297}; 1298 1299/* 1300 * handle internet6 requests 1301 */ 1302int 1303sysctl_inet6(string, bufpp, mib, flags, typep) 1304 char *string; 1305 char **bufpp; 1306 int mib[]; 1307 int flags; 1308 int *typep; 1309{ 1310 struct list *lp; 1311 int indx; 1312 1313 if (*bufpp == NULL) { 1314 listall(string, &inet6list); 1315 return(-1); 1316 } 1317 if ((indx = findname(string, "third", bufpp, &inet6list)) == -1) 1318 return(-1); 1319 mib[2] = indx; 1320 if (indx < IPV6PROTO_MAXID && inet6vars[indx].list != NULL) 1321 lp = &inet6vars[indx]; 1322 else if (!flags) 1323 return(-1); 1324 else { 1325 warnx("%s: no variables defined for this protocol", string); 1326 return(-1); 1327 } 1328 if (*bufpp == NULL) { 1329 listall(string, lp); 1330 return(-1); 1331 } 1332 if ((indx = findname(string, "fourth", bufpp, lp)) == -1) 1333 return(-1); 1334 mib[3] = indx; 1335 *typep = lp->list[indx].ctl_type; 1336 return(4); 1337} 1338#endif 1339 1340struct ctlname ipxname[] = CTL_IPXPROTO_NAMES; 1341struct ctlname ipxpname[] = IPXCTL_NAMES; 1342struct ctlname spxpname[] = SPXCTL_NAMES; 1343struct list ipxlist = { ipxname, IPXCTL_MAXID }; 1344struct list ipxvars[] = { 1345 { ipxpname, IPXCTL_MAXID }, /* ipx */ 1346 { 0, 0 }, 1347 { 0, 0 }, 1348 { 0, 0 }, 1349 { 0, 0 }, 1350 { spxpname, SPXCTL_MAXID }, 1351}; 1352 1353/* 1354 * Handle internet requests 1355 */ 1356int 1357sysctl_ipx(string, bufpp, mib, flags, typep) 1358 char *string; 1359 char **bufpp; 1360 int mib[]; 1361 int flags; 1362 int *typep; 1363{ 1364 struct list *lp; 1365 int indx; 1366 1367 if (*bufpp == NULL) { 1368 listall(string, &ipxlist); 1369 return(-1); 1370 } 1371 if ((indx = findname(string, "third", bufpp, &ipxlist)) == -1) 1372 return(-1); 1373 mib[2] = indx; 1374 if (indx <= IPXPROTO_SPX && ipxvars[indx].list != NULL) 1375 lp = &ipxvars[indx]; 1376 else if (!flags) 1377 return(-1); 1378 else { 1379 warnx("%s: no variables defined for this protocol", string); 1380 return(-1); 1381 } 1382 if (*bufpp == NULL) { 1383 listall(string, lp); 1384 return(-1); 1385 } 1386 if ((indx = findname(string, "fourth", bufpp, lp)) == -1) 1387 return(-1); 1388 mib[3] = indx; 1389 *typep = lp->list[indx].ctl_type; 1390 return(4); 1391} 1392 1393/* 1394 * Scan a list of names searching for a particular name. 1395 */ 1396int 1397findname(string, level, bufp, namelist) 1398 char *string; 1399 char *level; 1400 char **bufp; 1401 struct list *namelist; 1402{ 1403 char *name; 1404 int i; 1405 1406 if (namelist->list == 0 || (name = strsep(bufp, ".")) == NULL) { 1407 warnx("%s: incomplete specification", string); 1408 return(-1); 1409 } 1410 for (i = 0; i < namelist->size; i++) 1411 if (namelist->list[i].ctl_name != NULL && 1412 strcmp(name, namelist->list[i].ctl_name) == 0) 1413 break; 1414 if (i == namelist->size) { 1415 warnx("%s level name %s in %s is invalid", level, name, string); 1416 return(-1); 1417 } 1418 return(i); 1419} 1420 1421void 1422usage() 1423{ 1424 1425 (void)fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n\t%s\n", 1426 "sysctl [-n] variable ...", "sysctl [-n] -w variable=value ...", 1427 "sysctl [-n] -a", "sysctl [-n] -A"); 1428 exit(1); 1429} 1430