sysctl.c revision 1.39
1/* $OpenBSD: sysctl.c,v 1.39 1999/04/11 19:41:41 niklas 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 1.39 1999/04/11 19:41:41 niklas 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_ip4.h> 67#include <netinet/ip_ah.h> 68#include <netinet/ip_esp.h> 69#include <netinet/icmp_var.h> 70#include <netinet/ip_var.h> 71#include <netinet/udp.h> 72#include <netinet/udp_var.h> 73#include <netinet/tcp.h> 74#include <netinet/tcp_timer.h> 75#include <netinet/tcp_var.h> 76 77#include <netipx/ipx.h> 78#include <netipx/ipx_var.h> 79#include <netipx/spx_var.h> 80#include <ddb/db_var.h> 81#include <dev/rndvar.h> 82 83#include <err.h> 84#include <errno.h> 85#include <stdio.h> 86#include <stdlib.h> 87#include <string.h> 88#include <ctype.h> 89 90#ifdef CPU_BIOS 91#include <machine/biosvar.h> 92#endif 93 94struct ctlname topname[] = CTL_NAMES; 95struct ctlname kernname[] = CTL_KERN_NAMES; 96struct ctlname vmname[] = CTL_VM_NAMES; 97struct ctlname fsname[] = CTL_FS_NAMES; 98struct ctlname netname[] = CTL_NET_NAMES; 99struct ctlname hwname[] = CTL_HW_NAMES; 100struct ctlname username[] = CTL_USER_NAMES; 101struct ctlname debugname[CTL_DEBUG_MAXID]; 102struct ctlname *vfsname; 103#ifdef CTL_MACHDEP_NAMES 104struct ctlname machdepname[] = CTL_MACHDEP_NAMES; 105#endif 106struct ctlname ddbname[] = CTL_DDB_NAMES; 107char names[BUFSIZ]; 108int lastused; 109 110struct list { 111 struct ctlname *list; 112 int size; 113}; 114struct list toplist = { topname, CTL_MAXID }; 115struct list secondlevel[] = { 116 { 0, 0 }, /* CTL_UNSPEC */ 117 { kernname, KERN_MAXID }, /* CTL_KERN */ 118 { vmname, VM_MAXID }, /* CTL_VM */ 119 { fsname, FS_MAXID }, /* CTL_FS */ 120 { netname, NET_MAXID }, /* CTL_NET */ 121 { 0, CTL_DEBUG_MAXID }, /* CTL_DEBUG */ 122 { hwname, HW_MAXID }, /* CTL_HW */ 123#ifdef CTL_MACHDEP_NAMES 124 { machdepname, CPU_MAXID }, /* CTL_MACHDEP */ 125#else 126 { 0, 0 }, /* CTL_MACHDEP */ 127#endif 128 { username, USER_MAXID }, /* CTL_USER_NAMES */ 129 { ddbname, DBCTL_MAXID }, /* CTL_DDB_NAMES */ 130 { 0, 0 }, /* CTL_VFS */ 131}; 132 133int Aflag, aflag, nflag, wflag; 134 135/* 136 * Variables requiring special processing. 137 */ 138#define CLOCK 0x00000001 139#define BOOTTIME 0x00000002 140#define CHRDEV 0x00000004 141#define BLKDEV 0x00000008 142#define RNDSTATS 0x00000010 143#define BADDYNAMIC 0x00000020 144#define BIOSGEO 0x00000040 145#define BIOSDEV 0x00000080 146#define MAJ2DEV 0x00000100 147 148/* prototypes */ 149void debuginit __P((void)); 150void listall __P((char *, struct list *)); 151void parse __P((char *, int)); 152void parse_baddynamic __P((int *, size_t, char *, void **, size_t *, int, int)); 153void usage __P((void)); 154int findname __P((char *, char *, char **, struct list *)); 155int sysctl_inet __P((char *, char **, int *, int, int *)); 156int sysctl_ipx __P((char *, char **, int *, int, int *)); 157int sysctl_fs __P((char *, char **, int *, int, int *)); 158int sysctl_bios __P((char *, char **, int *, int, int *)); 159void vfsinit __P((void)); 160 161int 162main(argc, argv) 163 int argc; 164 char *argv[]; 165{ 166 int ch, lvl1; 167 168 while ((ch = getopt(argc, argv, "Aanw")) != -1) { 169 switch (ch) { 170 171 case 'A': 172 Aflag = 1; 173 break; 174 175 case 'a': 176 aflag = 1; 177 break; 178 179 case 'n': 180 nflag = 1; 181 break; 182 183 case 'w': 184 wflag = 1; 185 break; 186 187 default: 188 usage(); 189 } 190 } 191 argc -= optind; 192 argv += optind; 193 194 if (argc == 0 && (Aflag || aflag)) { 195 debuginit(); 196 vfsinit(); 197 for (lvl1 = 1; lvl1 < CTL_MAXID; lvl1++) 198 listall(topname[lvl1].ctl_name, &secondlevel[lvl1]); 199 exit(0); 200 } 201 if (argc == 0) 202 usage(); 203 for (; *argv != NULL; ++argv) 204 parse(*argv, 1); 205 exit(0); 206} 207 208/* 209 * List all variables known to the system. 210 */ 211void 212listall(prefix, lp) 213 char *prefix; 214 struct list *lp; 215{ 216 int lvl2; 217 char *cp, name[BUFSIZ]; 218 219 if (lp->list == NULL) 220 return; 221 (void)strncpy(name, prefix, BUFSIZ-1); 222 name[BUFSIZ-1] = '\0'; 223 cp = &name[strlen(name)]; 224 *cp++ = '.'; 225 for (lvl2 = 0; lvl2 < lp->size; lvl2++) { 226 if (lp->list[lvl2].ctl_name == NULL) 227 continue; 228 (void)strcpy(cp, lp->list[lvl2].ctl_name); 229 parse(name, Aflag); 230 } 231} 232 233/* 234 * Parse a name into a MIB entry. 235 * Lookup and print out the MIB entry if it exists. 236 * Set a new value if requested. 237 */ 238void 239parse(string, flags) 240 char *string; 241 int flags; 242{ 243 int indx, type, state, intval; 244 size_t size, len, newsize = 0; 245 int special = 0; 246 void *newval = 0; 247 quad_t quadval; 248 struct list *lp; 249 struct vfsconf vfc; 250 int mib[CTL_MAXNAME]; 251 char *cp, *bufp, buf[BUFSIZ]; 252 253 (void)strncpy(buf, string, sizeof(buf) - 1); 254 buf[sizeof(buf) - 1] = '\0'; 255 bufp = buf; 256 if ((cp = strchr(string, '=')) != NULL) { 257 if (!wflag) 258 errx(2, "must specify -w to set variables"); 259 *strchr(buf, '=') = '\0'; 260 *cp++ = '\0'; 261 while (isspace(*cp)) 262 cp++; 263 newval = cp; 264 newsize = strlen(cp); 265 } 266 if ((indx = findname(string, "top", &bufp, &toplist)) == -1) 267 return; 268 mib[0] = indx; 269 if (indx == CTL_VFS) 270 vfsinit(); 271 if (indx == CTL_DEBUG) 272 debuginit(); 273 lp = &secondlevel[indx]; 274 if (lp->list == 0) { 275 warnx("%s: class is not implemented", topname[indx].ctl_name); 276 return; 277 } 278 if (bufp == NULL) { 279 listall(topname[indx].ctl_name, lp); 280 return; 281 } 282 if ((indx = findname(string, "second", &bufp, lp)) == -1) 283 return; 284 mib[1] = indx; 285 type = lp->list[indx].ctl_type; 286 len = 2; 287 switch (mib[0]) { 288 289 case CTL_KERN: 290 switch (mib[1]) { 291 case KERN_PROF: 292 mib[2] = GPROF_STATE; 293 size = sizeof(state); 294 if (sysctl(mib, 3, &state, &size, NULL, 0) == -1) { 295 if (flags == 0) 296 return; 297 if (!nflag) 298 (void)printf("%s: ", string); 299 (void)puts("kernel is not compiled for profiling"); 300 return; 301 } 302 if (!nflag) 303 (void)printf("%s = %s\n", string, 304 state == GMON_PROF_OFF ? "off" : "running"); 305 return; 306 case KERN_VNODE: 307 case KERN_FILE: 308 if (flags == 0) 309 return; 310 warnx("use pstat to view %s information", string); 311 return; 312 case KERN_PROC: 313 if (flags == 0) 314 return; 315 warnx("use ps to view %s information", string); 316 return; 317 case KERN_NTPTIME: 318 if (flags == 0) 319 return; 320 warnx("use xntpdc to view %s information", string); 321 return; 322 case KERN_CLOCKRATE: 323 special |= CLOCK; 324 break; 325 case KERN_BOOTTIME: 326 special |= BOOTTIME; 327 break; 328 case KERN_RND: 329 special |= RNDSTATS; 330 break; 331 } 332 break; 333 334 case CTL_HW: 335 break; 336 337 case CTL_VM: 338 if (mib[1] == VM_LOADAVG) { 339 double loads[3]; 340 341 getloadavg(loads, 3); 342 if (!nflag) 343 (void)printf("%s = ", string); 344 (void)printf("%.2f %.2f %.2f\n", loads[0], 345 loads[1], loads[2]); 346 return; 347 } else if (mib[1] == VM_PSSTRINGS) { 348 struct _ps_strings _ps; 349 350 len = sizeof(_ps); 351 if (sysctl(mib, 2, &_ps, &len, NULL, 0) == -1) { 352 if (flags == 0) 353 return; 354 if (!nflag) 355 (void)printf("%s: ", string); 356 (void)puts("can't find ps strings"); 357 return; 358 } 359 if (!nflag) 360 (void)printf("%s = ", string); 361 (void)printf("%p\n", _ps.val); 362 return; 363 } 364 if (flags == 0) 365 return; 366 warnx("use vmstat or systat to view %s information", string); 367 return; 368 369 case CTL_NET: 370 if (mib[1] == PF_INET) { 371 len = sysctl_inet(string, &bufp, mib, flags, &type); 372 if (len < 0) 373 return; 374 375 if ((mib[2] == IPPROTO_TCP && 376 mib[3] == TCPCTL_BADDYNAMIC) || 377 (mib[2] == IPPROTO_UDP && 378 mib[3] == UDPCTL_BADDYNAMIC)) { 379 380 special |= BADDYNAMIC; 381 382 if (newval != NULL) 383 parse_baddynamic(mib, len, string, 384 &newval, &newsize, flags, nflag); 385 } 386 break; 387 } 388 if (mib[1] == PF_IPX) { 389 len = sysctl_ipx(string, &bufp, mib, flags, &type); 390 if (len >= 0) 391 break; 392 return; 393 } 394 if (flags == 0) 395 return; 396 warnx("use netstat to view %s information", string); 397 return; 398 399 case CTL_DEBUG: 400 mib[2] = CTL_DEBUG_VALUE; 401 len = 3; 402 break; 403 404 case CTL_MACHDEP: 405#ifdef CPU_CONSDEV 406 if (mib[1] == CPU_CONSDEV) 407 special |= CHRDEV; 408#endif 409#ifdef CPU_BLK2CHR 410 if (mib[1] == CPU_BLK2CHR) { 411 if (bufp == NULL) 412 return; 413 mib[2] = makedev(atoi(bufp),0); 414 bufp = NULL; 415 len = 3; 416 special |= CHRDEV; 417 break; 418 } 419#endif 420#ifdef CPU_CHR2BLK 421 if (mib[1] == CPU_CHR2BLK) { 422 if (bufp == NULL) 423 return; 424 mib[2] = makedev(atoi(bufp),0); 425 bufp = NULL; 426 len = 3; 427 special |= BLKDEV; 428 break; 429 } 430#endif 431#ifdef CPU_BIOS 432 if (mib[1] == CPU_BIOS) { 433 len = sysctl_bios(string, &bufp, mib, flags, &type); 434 if (len < 0) 435 return; 436 if (mib[2] == BIOS_DEV) 437 special |= BIOSDEV; 438 if (mib[2] == BIOS_DISKINFO) 439 special |= BIOSGEO; 440 break; 441 } 442#endif 443 break; 444 445 case CTL_FS: 446 len = sysctl_fs(string, &bufp, mib, flags, &type); 447 if (len >= 0) 448 break; 449 return; 450 451 case CTL_VFS: 452 mib[3] = mib[1]; 453 mib[1] = VFS_GENERIC; 454 mib[2] = VFS_CONF; 455 len = 4; 456 size = sizeof vfc; 457 if (sysctl(mib, 4, &vfc, &size, (void *)0, (size_t)0) < 0) { 458 if (errno != EOPNOTSUPP) 459 perror("vfs print"); 460 return; 461 } 462 if (flags == 0 && vfc.vfc_refcount == 0) 463 return; 464 if (!nflag) 465 fprintf(stdout, "%s has %d mounted instance%s\n", 466 string, vfc.vfc_refcount, 467 vfc.vfc_refcount != 1 ? "s" : ""); 468 else 469 fprintf(stdout, "%d\n", vfc.vfc_refcount); 470 return; 471 472 case CTL_USER: 473 case CTL_DDB: 474 break; 475 476 default: 477 warnx("illegal top level value: %d", mib[0]); 478 return; 479 480 } 481 if (bufp) { 482 warnx("name %s in %s is unknown", bufp, string); 483 return; 484 } 485 if (newsize > 0) { 486 switch (type) { 487 case CTLTYPE_INT: 488 intval = atoi(newval); 489 newval = &intval; 490 newsize = sizeof(intval); 491 break; 492 493 case CTLTYPE_QUAD: 494 (void)sscanf(newval, "%qd", &quadval); 495 newval = &quadval; 496 newsize = sizeof(quadval); 497 break; 498 } 499 } 500 size = BUFSIZ; 501 if (sysctl(mib, len, buf, &size, newsize ? newval : 0, newsize) == -1) { 502 if (flags == 0) 503 return; 504 switch (errno) { 505 case EOPNOTSUPP: 506 warnx("%s: value is not available", string); 507 return; 508 case ENOTDIR: 509 warnx("%s: specification is incomplete", string); 510 return; 511 case ENOMEM: 512 warnx("%s: type is unknown to this program", string); 513 return; 514 case ENXIO: 515 if (special & BIOSGEO) 516 return; 517 default: 518 warn(string); 519 return; 520 } 521 } 522 if (special & CLOCK) { 523 struct clockinfo *clkp = (struct clockinfo *)buf; 524 525 if (!nflag) 526 (void)printf("%s = ", string); 527 (void)printf( 528 "tick = %d, tickadj = %d, hz = %d, profhz = %d, stathz = %d\n", 529 clkp->tick, clkp->tickadj, clkp->hz, clkp->profhz, clkp->stathz); 530 return; 531 } 532 if (special & BOOTTIME) { 533 struct timeval *btp = (struct timeval *)buf; 534 time_t boottime; 535 536 if (!nflag) { 537 boottime = btp->tv_sec; 538 (void)printf("%s = %s", string, ctime(&boottime)); 539 } else 540 (void)printf("%ld\n", btp->tv_sec); 541 return; 542 } 543 if (special & BLKDEV) { 544 dev_t dev = *(dev_t *)buf; 545 546 if (!nflag) 547 (void)printf("%s = %s\n", string, 548 devname(dev, S_IFBLK)); 549 else 550 (void)printf("0x%x\n", dev); 551 return; 552 } 553 if (special & CHRDEV) { 554 dev_t dev = *(dev_t *)buf; 555 556 if (!nflag) 557 (void)printf("%s = %s\n", string, 558 devname(dev, S_IFCHR)); 559 else 560 (void)printf("0x%x\n", dev); 561 return; 562 } 563#ifdef CPU_BIOS 564 if (special & BIOSGEO) { 565 bios_diskinfo_t *pdi = (bios_diskinfo_t *)buf; 566 567 if (!nflag) 568 (void)printf("%s = ", string); 569 (void)printf("bootdev = 0x%x, " 570 "cylinders = %u, heads = %u, sectors = %u\n", 571 pdi->bsd_dev, pdi->bios_cylinders, pdi->bios_heads, 572 pdi->bios_sectors); 573 return; 574 } 575 if (special & BIOSDEV) { 576 int dev = *(int*)buf; 577 578 if (!nflag) 579 (void)printf("%s = ", string); 580 (void) printf("0x%02x\n", dev); 581 return; 582 } 583#endif 584 if (special & RNDSTATS) { 585 struct rndstats *rndstats = (struct rndstats *)buf; 586 587 if (!nflag) 588 (void)printf("%s = ", string); 589 (void)printf( 590 "%u %u %u %u %u %u %u %u %u %u %u %u %u %u %u %u\n", 591 rndstats->rnd_total, rndstats->rnd_used, 592 rndstats->arc4_reads, rndstats->rnd_timer, 593 rndstats->rnd_mouse, rndstats->rnd_tty, 594 rndstats->rnd_disk, rndstats->rnd_net, 595 rndstats->rnd_reads, rndstats->rnd_waits, 596 rndstats->rnd_enqs, rndstats->rnd_deqs, 597 rndstats->rnd_drops, rndstats->rnd_drople, 598 rndstats->rnd_asleep, rndstats->rnd_queued); 599 return; 600 } 601 if (special & BADDYNAMIC) { 602 in_port_t port, lastport; 603 u_int32_t *baddynamic = (u_int32_t *)buf; 604 605 if (!nflag) 606 (void)printf("%s%s", string, newsize ? ": " : " = "); 607 lastport = 0; 608 for (port = IPPORT_RESERVED/2; port < IPPORT_RESERVED; port++) 609 if (DP_ISSET(baddynamic, port)) { 610 (void)printf("%s%hd", lastport ? "," : "", 611 port); 612 lastport = port; 613 } 614 if (newsize != 0) { 615 if (!nflag) 616 fputs(" -> ", stdout); 617 baddynamic = (u_int32_t *)newval; 618 lastport = 0; 619 for (port = IPPORT_RESERVED/2; port < IPPORT_RESERVED; 620 port++) 621 if (DP_ISSET(baddynamic, port)) { 622 (void)printf("%s%hd", 623 lastport ? "," : "", port); 624 lastport = port; 625 } 626 } 627 (void)putchar('\n'); 628 return; 629 } 630 switch (type) { 631 case CTLTYPE_INT: 632 if (newsize == 0) { 633 if (!nflag) 634 (void)printf("%s = ", string); 635 (void)printf("%d\n", *(int *)buf); 636 } else { 637 if (!nflag) 638 (void)printf("%s: %d -> ", string, 639 *(int *)buf); 640 (void)printf("%d\n", *(int *)newval); 641 } 642 return; 643 644 case CTLTYPE_STRING: 645 if (newsize == 0) { 646 if (!nflag) 647 (void)printf("%s = ", string); 648 (void)puts(buf); 649 } else { 650 if (!nflag) 651 (void)printf("%s: %s -> ", string, buf); 652 (void)puts((char *)newval); 653 } 654 return; 655 656 case CTLTYPE_QUAD: 657 if (newsize == 0) { 658 if (!nflag) 659 (void)printf("%s = ", string); 660 (void)printf("%qd\n", *(quad_t *)buf); 661 } else { 662 if (!nflag) 663 (void)printf("%s: %qd -> ", string, 664 *(quad_t *)buf); 665 (void)printf("%qd\n", *(quad_t *)newval); 666 } 667 return; 668 669 case CTLTYPE_STRUCT: 670 warnx("%s: unknown structure returned", string); 671 return; 672 673 default: 674 case CTLTYPE_NODE: 675 warnx("%s: unknown type returned", string); 676 return; 677 } 678} 679 680void 681parse_baddynamic(mib, len, string, newvalp, newsizep, flags, nflag) 682 int mib[]; 683 size_t len; 684 char *string; 685 void **newvalp; 686 size_t *newsizep; 687 int flags; 688 int nflag; 689{ 690 static u_int32_t newbaddynamic[DP_MAPSIZE]; 691 in_port_t port; 692 size_t size; 693 char action, *cp; 694 695 if (strchr((char *)*newvalp, '+') || strchr((char *)*newvalp, '-')) { 696 size = sizeof(newbaddynamic); 697 if (sysctl(mib, len, newbaddynamic, &size, 0, 0) == -1) { 698 if (flags == 0) 699 return; 700 if (!nflag) 701 (void)printf("%s: ", string); 702 (void)puts("kernel does contain bad dynamic port tables"); 703 return; 704 } 705 706 while (*newvalp && (cp = strsep((char **)newvalp, ", \t")) && *cp) { 707 if (*cp != '+' && *cp != '-') 708 errx(1, "cannot mix +/- with full list"); 709 action = *cp++; 710 port = atoi(cp); 711 if (port < IPPORT_RESERVED/2 || port >= IPPORT_RESERVED) 712 errx(1, "invalid port, range is %d to %d", 713 IPPORT_RESERVED/2, IPPORT_RESERVED-1); 714 if (action == '+') 715 DP_SET(newbaddynamic, port); 716 else 717 DP_CLR(newbaddynamic, port); 718 } 719 } else { 720 (void)memset((void *)newbaddynamic, 0, sizeof(newbaddynamic)); 721 while (*newvalp && (cp = strsep((char **)newvalp, ", \t")) && *cp) { 722 port = atoi(cp); 723 if (port < IPPORT_RESERVED/2 || port >= IPPORT_RESERVED) 724 errx(1, "invalid port, range is %d to %d", 725 IPPORT_RESERVED/2, IPPORT_RESERVED-1); 726 DP_SET(newbaddynamic, port); 727 } 728 } 729 730 *newvalp = (void *)newbaddynamic; 731 *newsizep = sizeof(newbaddynamic); 732} 733 734/* 735 * Initialize the set of debugging names 736 */ 737void 738debuginit() 739{ 740 int mib[3], loc, i; 741 size_t size; 742 743 if (secondlevel[CTL_DEBUG].list != 0) 744 return; 745 secondlevel[CTL_DEBUG].list = debugname; 746 mib[0] = CTL_DEBUG; 747 mib[2] = CTL_DEBUG_NAME; 748 for (loc = lastused, i = 0; i < CTL_DEBUG_MAXID; i++) { 749 mib[1] = i; 750 size = BUFSIZ - loc; 751 if (sysctl(mib, 3, &names[loc], &size, NULL, 0) == -1) 752 continue; 753 debugname[i].ctl_name = &names[loc]; 754 debugname[i].ctl_type = CTLTYPE_INT; 755 loc += size; 756 } 757 lastused = loc; 758} 759 760/* 761 * Initialize the set of filesystem names 762 */ 763void 764vfsinit() 765{ 766 int mib[4], maxtypenum, cnt, loc, size; 767 struct vfsconf vfc; 768 size_t buflen; 769 770 if (secondlevel[CTL_VFS].list != 0) 771 return; 772 mib[0] = CTL_VFS; 773 mib[1] = VFS_GENERIC; 774 mib[2] = VFS_MAXTYPENUM; 775 buflen = 4; 776 if (sysctl(mib, 3, &maxtypenum, &buflen, (void *)0, (size_t)0) < 0) 777 return; 778 if ((vfsname = malloc(maxtypenum * sizeof(*vfsname))) == 0) 779 return; 780 memset(vfsname, 0, maxtypenum * sizeof(*vfsname)); 781 mib[2] = VFS_CONF; 782 buflen = sizeof vfc; 783 for (loc = lastused, cnt = 0; cnt < maxtypenum; cnt++) { 784 mib[3] = cnt; 785 if (sysctl(mib, 4, &vfc, &buflen, (void *)0, (size_t)0) < 0) { 786 if (errno == EOPNOTSUPP) 787 continue; 788 perror("vfsinit"); 789 free(vfsname); 790 return; 791 } 792 strcat(&names[loc], vfc.vfc_name); 793 vfsname[cnt].ctl_name = &names[loc]; 794 vfsname[cnt].ctl_type = CTLTYPE_INT; 795 size = strlen(vfc.vfc_name) + 1; 796 loc += size; 797 } 798 lastused = loc; 799 secondlevel[CTL_VFS].list = vfsname; 800 secondlevel[CTL_VFS].size = maxtypenum; 801 return; 802} 803 804struct ctlname posixname[] = CTL_FS_POSIX_NAMES; 805struct list fslist = { posixname, FS_POSIX_MAXID }; 806 807/* 808 * handle file system requests 809 */ 810int 811sysctl_fs(string, bufpp, mib, flags, typep) 812 char *string; 813 char **bufpp; 814 int mib[]; 815 int flags; 816 int *typep; 817{ 818 int indx; 819 820 if (*bufpp == NULL) { 821 listall(string, &fslist); 822 return(-1); 823 } 824 if ((indx = findname(string, "third", bufpp, &fslist)) == -1) 825 return(-1); 826 mib[2] = indx; 827 *typep = fslist.list[indx].ctl_type; 828 return(3); 829} 830 831#ifdef CPU_BIOS 832struct ctlname biosname[] = CTL_BIOS_NAMES; 833struct list bioslist = { biosname, BIOS_MAXID }; 834 835/* 836 * handle BIOS requests 837 */ 838int 839sysctl_bios(string, bufpp, mib, flags, typep) 840 char *string; 841 char **bufpp; 842 int mib[]; 843 int flags; 844 int *typep; 845{ 846 char *name; 847 int indx; 848 849 if (*bufpp == NULL) { 850 listall(string, &bioslist); 851 return(-1); 852 } 853 if ((indx = findname(string, "third", bufpp, &bioslist)) == -1) 854 return(-1); 855 mib[2] = indx; 856 if (indx == BIOS_DISKINFO) { 857 if (*bufpp == NULL) { 858 char name[BUFSIZ]; 859 860 /* scan all the bios devices */ 861 for (indx = 0; indx < 256; indx++) { 862 snprintf(name, sizeof(name), "%s.%u", 863 string, indx); 864 parse(name, 1); 865 } 866 return(-1); 867 } 868 if ((name = strsep(bufpp, ".")) == NULL) { 869 warnx("%s: incomplete specification", string); 870 return(-1); 871 } 872 mib[3] = atoi(name); 873 *typep = CTLTYPE_STRUCT; 874 return 4; 875 } else { 876 *typep = bioslist.list[indx].ctl_type; 877 return(3); 878 } 879} 880#endif 881 882struct ctlname inetname[] = CTL_IPPROTO_NAMES; 883struct ctlname ipname[] = IPCTL_NAMES; 884struct ctlname icmpname[] = ICMPCTL_NAMES; 885struct ctlname ip4name[] = IP4CTL_NAMES; 886struct ctlname tcpname[] = TCPCTL_NAMES; 887struct ctlname udpname[] = UDPCTL_NAMES; 888struct ctlname espname[] = ESPCTL_NAMES; 889struct ctlname ahname[] = AHCTL_NAMES; 890struct list inetlist = { inetname, IPPROTO_MAXID }; 891struct list inetvars[] = { 892 { ipname, IPCTL_MAXID }, /* ip */ 893 { icmpname, ICMPCTL_MAXID }, /* icmp */ 894 { 0, 0 }, /* igmp */ 895 { 0, 0 }, /* ggmp */ 896 { ip4name, IP4CTL_MAXID }, /* ipencap */ 897 { 0, 0 }, 898 { tcpname, TCPCTL_MAXID }, /* tcp */ 899 { 0, 0 }, 900 { 0, 0 }, /* egp */ 901 { 0, 0 }, 902 { 0, 0 }, 903 { 0, 0 }, 904 { 0, 0 }, /* pup */ 905 { 0, 0 }, 906 { 0, 0 }, 907 { 0, 0 }, 908 { 0, 0 }, 909 { udpname, UDPCTL_MAXID }, /* udp */ 910 { 0, 0 }, 911 { 0, 0 }, 912 { 0, 0 }, 913 { 0, 0 }, 914 { 0, 0 }, 915 { 0, 0 }, 916 { 0, 0 }, 917 { 0, 0 }, 918 { 0, 0 }, 919 { 0, 0 }, 920 { 0, 0 }, 921 { 0, 0 }, 922 { 0, 0 }, 923 { 0, 0 }, 924 { 0, 0 }, 925 { 0, 0 }, 926 { 0, 0 }, 927 { 0, 0 }, 928 { 0, 0 }, 929 { 0, 0 }, 930 { 0, 0 }, 931 { 0, 0 }, 932 { 0, 0 }, 933 { 0, 0 }, 934 { 0, 0 }, 935 { 0, 0 }, 936 { 0, 0 }, 937 { 0, 0 }, 938 { 0, 0 }, 939 { 0, 0 }, 940 { 0, 0 }, 941 { 0, 0 }, 942 { espname, ESPCTL_MAXID }, /* esp */ 943 { ahname, AHCTL_MAXID }, /* ah */ 944}; 945 946/* 947 * handle internet requests 948 */ 949int 950sysctl_inet(string, bufpp, mib, flags, typep) 951 char *string; 952 char **bufpp; 953 int mib[]; 954 int flags; 955 int *typep; 956{ 957 struct list *lp; 958 int indx; 959 960 if (*bufpp == NULL) { 961 listall(string, &inetlist); 962 return(-1); 963 } 964 if ((indx = findname(string, "third", bufpp, &inetlist)) == -1) 965 return(-1); 966 mib[2] = indx; 967 if (indx < IPPROTO_MAXID && inetvars[indx].list != NULL) 968 lp = &inetvars[indx]; 969 else if (!flags) 970 return(-1); 971 else { 972 warnx("%s: no variables defined for this protocol", string); 973 return(-1); 974 } 975 if (*bufpp == NULL) { 976 listall(string, lp); 977 return(-1); 978 } 979 if ((indx = findname(string, "fourth", bufpp, lp)) == -1) 980 return(-1); 981 mib[3] = indx; 982 *typep = lp->list[indx].ctl_type; 983 return(4); 984} 985 986struct ctlname ipxname[] = CTL_IPXPROTO_NAMES; 987struct ctlname ipxpname[] = IPXCTL_NAMES; 988struct ctlname spxpname[] = SPXCTL_NAMES; 989struct list ipxlist = { ipxname, IPXCTL_MAXID }; 990struct list ipxvars[] = { 991 { ipxpname, IPXCTL_MAXID }, /* ipx */ 992 { 0, 0 }, 993 { 0, 0 }, 994 { 0, 0 }, 995 { 0, 0 }, 996 { spxpname, SPXCTL_MAXID }, 997}; 998 999/* 1000 * Handle internet requests 1001 */ 1002int 1003sysctl_ipx(string, bufpp, mib, flags, typep) 1004 char *string; 1005 char **bufpp; 1006 int mib[]; 1007 int flags; 1008 int *typep; 1009{ 1010 struct list *lp; 1011 int indx; 1012 1013 if (*bufpp == NULL) { 1014 listall(string, &ipxlist); 1015 return(-1); 1016 } 1017 if ((indx = findname(string, "third", bufpp, &ipxlist)) == -1) 1018 return(-1); 1019 mib[2] = indx; 1020 if (indx <= IPXPROTO_SPX && ipxvars[indx].list != NULL) 1021 lp = &ipxvars[indx]; 1022 else if (!flags) 1023 return(-1); 1024 else { 1025 warnx("%s: no variables defined for this protocol", string); 1026 return(-1); 1027 } 1028 if (*bufpp == NULL) { 1029 listall(string, lp); 1030 return(-1); 1031 } 1032 if ((indx = findname(string, "fourth", bufpp, lp)) == -1) 1033 return(-1); 1034 mib[3] = indx; 1035 *typep = lp->list[indx].ctl_type; 1036 return(4); 1037} 1038 1039/* 1040 * Scan a list of names searching for a particular name. 1041 */ 1042int 1043findname(string, level, bufp, namelist) 1044 char *string; 1045 char *level; 1046 char **bufp; 1047 struct list *namelist; 1048{ 1049 char *name; 1050 int i; 1051 1052 if (namelist->list == 0 || (name = strsep(bufp, ".")) == NULL) { 1053 warnx("%s: incomplete specification", string); 1054 return(-1); 1055 } 1056 for (i = 0; i < namelist->size; i++) 1057 if (namelist->list[i].ctl_name != NULL && 1058 strcmp(name, namelist->list[i].ctl_name) == 0) 1059 break; 1060 if (i == namelist->size) { 1061 warnx("%s level name %s in %s is invalid", level, name, string); 1062 return(-1); 1063 } 1064 return(i); 1065} 1066 1067void 1068usage() 1069{ 1070 1071 (void)fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n\t%s\n", 1072 "sysctl [-n] variable ...", "sysctl [-n] -w variable=value ...", 1073 "sysctl [-n] -a", "sysctl [-n] -A"); 1074 exit(1); 1075} 1076