sysctl.c revision 1.78
1 /* $NetBSD: sysctl.c,v 1.78 2004/02/19 06:40:14 atatat Exp $ */ 2 3 /*- 4 * Copyright (c) 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Brown. 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. Neither the name of The NetBSD Foundation nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1993 37 * The Regents of the University of California. All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64 #include <sys/cdefs.h> 65 #ifndef lint 66 __COPYRIGHT( 67 "@(#) Copyright (c) 1993\n\ 68 The Regents of the University of California. All rights reserved.\n"); 69 #endif /* not lint */ 70 71 #ifndef lint 72 #if 0 73 static char sccsid[] = "@(#)sysctl.c 8.1 (Berkeley) 6/6/93"; 74 #else 75 __RCSID("$NetBSD: sysctl.c,v 1.78 2004/02/19 06:40:14 atatat Exp $"); 76 #endif 77 #endif /* not lint */ 78 79 #include <sys/types.h> 80 #include <sys/param.h> 81 #include <sys/sysctl.h> 82 #include <sys/mount.h> 83 #include <sys/resource.h> 84 #include <sys/stat.h> 85 #include <sys/sched.h> 86 #include <sys/socket.h> 87 #include <netinet/in.h> 88 #include <netinet/ip_var.h> 89 #include <netinet/tcp.h> 90 #include <netinet/tcp_timer.h> 91 #include <netinet/tcp_var.h> 92 #include <netinet/icmp6.h> 93 #include <nfs/rpcv2.h> 94 #include <nfs/nfsproto.h> 95 #include <nfs/nfs.h> 96 #include <machine/cpu.h> 97 #include <netkey/key_var.h> 98 99 #include <assert.h> 100 #include <ctype.h> 101 #include <err.h> 102 #include <errno.h> 103 #include <inttypes.h> 104 #include <stdarg.h> 105 #include <stdio.h> 106 #include <stdlib.h> 107 #include <string.h> 108 #include <time.h> 109 #include <unistd.h> 110 111 /* 112 * this needs to be able to do the printing and the setting 113 */ 114 #define HANDLER_PROTO const char *, const char *, char *, \ 115 int *, u_int, const struct sysctlnode *, \ 116 u_int, void * 117 #define HANDLER_ARGS const char *sname, const char *dname, char *value, \ 118 int *name, u_int namelen, const struct sysctlnode *pnode, \ 119 u_int type, void *v 120 #define DISPLAY_VALUE 0 121 #define DISPLAY_OLD 1 122 #define DISPLAY_NEW 2 123 124 /* 125 * generic routines 126 */ 127 static struct handlespec *findprinter(const int *, u_int); 128 static struct handlespec *findwriter(const int *, u_int); 129 static void print_tree(int *, u_int, struct sysctlnode *, u_int, int); 130 static void write_number(int *, u_int, struct sysctlnode *, char *); 131 static void write_string(int *, u_int, struct sysctlnode *, char *); 132 static void display_number(const struct sysctlnode *, const char *, 133 const void *, size_t, int); 134 static void display_string(const struct sysctlnode *, const char *, 135 const void *, size_t, int); 136 static void display_struct(const struct sysctlnode *, const char *, 137 const void *, size_t, int); 138 static void hex_dump(const unsigned char *, size_t); 139 static void usage(void); 140 static void parse(char *); 141 static void cparse(char *); 142 static void dparse(char *); 143 static void sysctlerror(int); 144 145 /* 146 * unexported from some place else (XXX tbd) 147 */ 148 int learn_tree(int *, u_int, struct sysctlnode *); 149 int sysctlbyname(const char *, void *, size_t *, void *, size_t); 150 int sysctlgetmibinfo(const char *, int *, u_int *, 151 char *, size_t *, struct sysctlnode **); 152 153 /* 154 * "handlers" 155 */ 156 static void printother(HANDLER_PROTO); 157 static void kern_clockrate(HANDLER_PROTO); 158 static void kern_boottime(HANDLER_PROTO); 159 static void kern_consdev(HANDLER_PROTO); 160 static void kern_cp_time(HANDLER_PROTO); 161 static void vm_loadavg(HANDLER_PROTO); 162 static void proc_limit(HANDLER_PROTO); 163 #ifdef CPU_DISKINFO 164 static void machdep_diskinfo(HANDLER_PROTO); 165 #endif /* CPU_DISKINFO */ 166 167 struct handlespec { 168 int ps_name[CTL_MAXNAME]; 169 void (*ps_p)(HANDLER_PROTO); 170 void (*ps_w)(HANDLER_PROTO); 171 void *ps_d; 172 } handlers[] = { 173 { { CTL_KERN, KERN_CLOCKRATE }, kern_clockrate }, 174 { { CTL_KERN, KERN_VNODE }, printother, NULL, "pstat" }, 175 { { CTL_KERN, KERN_PROC }, printother, NULL, "ps" }, 176 { { CTL_KERN, KERN_PROC2 }, printother, NULL, "ps" }, 177 { { CTL_KERN, KERN_PROC_ARGS }, printother, NULL, "ps" }, 178 { { CTL_KERN, KERN_FILE }, printother, NULL, "pstat" }, 179 { { CTL_KERN, KERN_NTPTIME }, printother, NULL, 180 "ntpdc -c kerninfo" }, 181 { { CTL_KERN, KERN_MSGBUF }, printother, NULL, "dmesg" }, 182 { { CTL_KERN, KERN_BOOTTIME }, kern_boottime }, 183 { { CTL_KERN, KERN_CONSDEV }, kern_consdev }, 184 { { CTL_KERN, KERN_CP_TIME }, kern_cp_time }, 185 { { CTL_KERN, KERN_SYSVIPC_INFO }, printother, NULL, "ipcs" }, 186 { { CTL_VM, VM_METER }, printother, NULL, 187 "vmstat' or 'systat" }, 188 { { CTL_VM, VM_LOADAVG }, vm_loadavg }, 189 { { CTL_VM, VM_UVMEXP }, printother, NULL, 190 "vmstat' or 'systat" }, 191 { { CTL_VM, VM_UVMEXP2 }, printother, NULL, 192 "vmstat' or 'systat" }, 193 { { CTL_VFS, 2 /* NFS */, NFS_NFSSTATS }, 194 printother, NULL, "nfsstat" }, 195 { { CTL_NET }, printother, NULL, NULL }, 196 { { CTL_NET, PF_LOCAL }, printother, NULL, NULL }, 197 { { CTL_NET, PF_INET, IPPROTO_TCP, TCPCTL_IDENT }, 198 printother, NULL, "identd" }, 199 { { CTL_NET, PF_INET6, IPPROTO_TCP, TCPCTL_IDENT }, 200 printother, NULL, "identd" }, 201 202 { { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }, 203 printother, NULL, "something else" }, 204 { { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }, 205 printother, NULL, "something else" }, 206 207 208 { { CTL_NET, PF_KEY, KEYCTL_DUMPSA }, 209 printother, NULL, "setkey" }, 210 { { CTL_NET, PF_KEY, KEYCTL_DUMPSP }, 211 printother, NULL, "setkey" }, 212 /* { { CTL_DEBUG }, printother, NULL, NULL }, */ 213 { { CTL_HW, HW_DISKSTATS }, printother, NULL, "iostat" }, 214 #ifdef CPU_CONSDEV 215 { { CTL_MACHDEP, CPU_CONSDEV }, kern_consdev }, 216 #endif /* CPU_CONSDEV */ 217 #ifdef CPU_DISKINFO 218 { { CTL_MACHDEP, CPU_DISKINFO },machdep_diskinfo }, 219 #endif /* CPU_CONSDEV */ 220 { { CTL_DDB }, printother, NULL, NULL }, 221 { { CTL_PROC, -1, PROC_PID_LIMIT, -1, -1 }, proc_limit, proc_limit }, 222 { { CTL_UNSPEC }, }, 223 }; 224 225 struct sysctlnode my_root = { 226 #if defined(lint) 227 0 228 #else /* defined(lint) */ 229 .sysctl_flags = SYSCTL_ROOT| 230 SYSCTL_TYPE(CTLTYPE_NODE), 231 .sysctl_size = sizeof(struct sysctlnode), 232 .sysctl_num = 0, 233 .sysctl_name = "(prog_root)", 234 #endif /* defined(lint) */ 235 }; 236 237 int Aflag, aflag, Mflag, nflag, qflag, rflag, wflag, xflag; 238 int req; 239 FILE *warnfp = stderr; 240 241 /* 242 * vah-riables n stuff 243 */ 244 char gsname[SYSCTL_NAMELEN * CTL_MAXNAME + CTL_MAXNAME], 245 gdname[10 * CTL_MAXNAME + CTL_MAXNAME]; 246 char sep[2] = ".", *eq = " = "; 247 const char *lname[] = { 248 "top", "second", "third", "fourth", "fifth", "sixth", 249 "seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth" 250 }; 251 252 /* 253 * you've heard of main, haven't you? 254 */ 255 int 256 main(int argc, char *argv[]) 257 { 258 char *fn = NULL; 259 int name[CTL_MAXNAME]; 260 int ch; 261 262 while ((ch = getopt(argc, argv, "Aaef:Mnqrwx")) != -1) { 263 switch (ch) { 264 case 'A': 265 Aflag++; 266 break; 267 case 'a': 268 aflag++; 269 break; 270 case 'e': 271 eq = "="; 272 break; 273 case 'f': 274 fn = optarg; 275 wflag++; 276 break; 277 case 'M': 278 Mflag++; 279 break; 280 case 'n': 281 nflag++; 282 break; 283 case 'q': 284 qflag++; 285 break; 286 case 'r': 287 rflag++; 288 break; 289 case 'w': 290 wflag++; 291 break; 292 case 'x': 293 xflag++; 294 break; 295 default: 296 usage(); 297 } 298 } 299 300 argc -= optind; 301 argv += optind; 302 303 if (qflag && !wflag) 304 usage(); 305 if (xflag && rflag) 306 usage(); 307 /* if ((xflag || rflag) && wflag) 308 usage(); */ 309 /* if (aflag && Mflag) 310 usage(); */ 311 if ((Aflag || Mflag) && argc == 0) 312 aflag = 1; 313 314 if (Aflag) 315 warnfp = stdout; 316 req = 0; 317 318 if (aflag) { 319 print_tree(&name[0], 0, NULL, CTLTYPE_NODE, 1); 320 /* if (argc == 0) */ 321 return (0); 322 } 323 324 if (fn) { 325 FILE *fp; 326 char *l; 327 328 fp = fopen(fn, "r"); 329 if (fp == NULL) { 330 err(1, "%s", fn); 331 } else { 332 while ((l = fparseln(fp, NULL, NULL, NULL, 0)) != NULL) 333 { 334 if (*l) { 335 parse(l); 336 free(l); 337 } 338 } 339 fclose(fp); 340 } 341 return (0); 342 } 343 344 if (argc == 0) 345 usage(); 346 347 while (argc-- > 0) 348 parse(*argv++); 349 350 return (0); 351 } 352 353 /* 354 * ******************************************************************** 355 * how to find someone special to handle the reading (or maybe even 356 * writing) of a particular node 357 * ******************************************************************** 358 */ 359 static struct handlespec * 360 findprinter(const int *name, u_int namelen) 361 { 362 struct handlespec *p; 363 int i, j; 364 365 if (namelen < 1) 366 return (NULL); 367 368 p = &handlers[0]; 369 for (i = 0; p[i].ps_name[0] != CTL_UNSPEC; i++) { 370 for (j = 0; j < namelen; j++) 371 if (p[i].ps_name[j] != name[j] && 372 p[i].ps_name[j] != -1) 373 break; 374 if (j == namelen && p[i].ps_p != NULL) 375 return (&p[i]); 376 } 377 378 return (NULL); 379 } 380 381 static struct handlespec * 382 findwriter(const int *name, u_int namelen) 383 { 384 struct handlespec *p; 385 int i, j; 386 387 if (namelen < 1) 388 return (NULL); 389 390 p = &handlers[0]; 391 for (i = 0; p[i].ps_name[0] != CTL_UNSPEC; i++) { 392 for (j = 0; j < namelen; j++) 393 if (p[i].ps_name[j] != name[j] && 394 p[i].ps_name[j] != -1) 395 break; 396 if (j == namelen && p[i].ps_w != NULL) 397 return (&p[i]); 398 } 399 400 return (NULL); 401 } 402 403 /* 404 * ******************************************************************** 405 * convert this special number to a special string so we can print the 406 * mib 407 * ******************************************************************** 408 */ 409 static const char * 410 sf(u_int f) 411 { 412 static char s[256]; 413 char *c; 414 415 s[0] = '\0'; 416 c = ""; 417 418 #define print_flag(_f, _s, _c, _q, _x) \ 419 if ((/*CONSTCOND*/_x) ? \ 420 (((_f) & (_x)) == (__CONCAT(SYSCTL_,_q))) : \ 421 ((_f) & (__CONCAT(SYSCTL_,_q)))) { \ 422 strlcat((_s), (_c), sizeof(_s)); \ 423 strlcat((_s), __STRING(_q), sizeof(_s)); \ 424 (_c) = ","; \ 425 (_f) &= ~(__CONCAT(SYSCTL_,_q)|(_x)); \ 426 } 427 print_flag(f, s, c, READONLY, SYSCTL_READWRITE); 428 print_flag(f, s, c, READONLY1, SYSCTL_READWRITE); 429 print_flag(f, s, c, READONLY2, SYSCTL_READWRITE); 430 print_flag(f, s, c, READWRITE, SYSCTL_READWRITE); 431 print_flag(f, s, c, ANYWRITE, 0); 432 print_flag(f, s, c, PRIVATE, 0); 433 print_flag(f, s, c, PERMANENT, 0); 434 print_flag(f, s, c, OWNDATA, 0); 435 print_flag(f, s, c, IMMEDIATE, 0); 436 print_flag(f, s, c, HEX, 0); 437 print_flag(f, s, c, ROOT, 0); 438 print_flag(f, s, c, ANYNUMBER, 0); 439 print_flag(f, s, c, HIDDEN, 0); 440 print_flag(f, s, c, ALIAS, 0); 441 #undef print_flag 442 443 if (f) { 444 char foo[9]; 445 snprintf(foo, sizeof(foo), "%x", f); 446 strlcat(s, c, sizeof(s)); 447 strlcat(s, foo, sizeof(s)); 448 } 449 450 return (s); 451 } 452 453 static const char * 454 st(u_int t) 455 { 456 457 switch (t) { 458 case CTLTYPE_NODE: 459 return "NODE"; 460 case CTLTYPE_INT: 461 return "INT"; 462 case CTLTYPE_STRING: 463 return "STRING"; 464 case CTLTYPE_QUAD: 465 return "QUAD"; 466 case CTLTYPE_STRUCT: 467 return "STRUCT"; 468 } 469 470 return "???"; 471 } 472 473 /* 474 * ******************************************************************** 475 * print this node and any others underneath it 476 * ******************************************************************** 477 */ 478 static void 479 print_tree(int *name, u_int namelen, struct sysctlnode *pnode, u_int type, 480 int add) 481 { 482 struct sysctlnode *node; 483 int rc, ni; 484 size_t sz; 485 char *sp, *dp, n[20]; 486 struct handlespec *p; 487 488 sp = &gsname[strlen(gsname)]; 489 dp = &gdname[strlen(gdname)]; 490 491 if (sp != &gsname[0] && dp == &gdname[0]) { 492 /* 493 * aw...shucks. now we must play catch up 494 */ 495 for (ni = 0; ni < namelen; ni++) { 496 (void)snprintf(n, sizeof(n), "%d", name[ni]); 497 if (ni > 0) 498 strncat(gdname, ".", sizeof(gdname)); 499 strncat(gdname, n, sizeof(gdname)); 500 } 501 } 502 503 if (pnode == NULL) 504 pnode = &my_root; 505 else if (add) { 506 snprintf(n, sizeof(n), "%d", pnode->sysctl_num); 507 if (namelen > 1) { 508 strncat(gsname, sep, sizeof(gsname)); 509 strncat(gdname, ".", sizeof(gdname)); 510 } 511 strncat(gsname, pnode->sysctl_name, sizeof(gsname)); 512 strncat(gdname, n, sizeof(gdname)); 513 } 514 515 if (Mflag && pnode != &my_root) { 516 if (nflag) 517 printf("%s: ", gdname); 518 else 519 printf("%s (%s): ", gsname, gdname); 520 printf("CTLTYPE_%s", st(type)); 521 if (type == CTLTYPE_NODE) { 522 if (SYSCTL_FLAGS(pnode->sysctl_flags) & SYSCTL_ALIAS) 523 printf(", alias %d", 524 pnode->sysctl_alias); 525 else 526 printf(", children %d/%d", 527 pnode->sysctl_clen, 528 pnode->sysctl_csize); 529 } 530 printf(", size %zu", pnode->sysctl_size); 531 printf(", flags 0x%x<%s>", 532 SYSCTL_FLAGS(pnode->sysctl_flags), 533 sf(SYSCTL_FLAGS(pnode->sysctl_flags))); 534 if (pnode->sysctl_func) 535 printf(", func=%p", pnode->sysctl_func); 536 printf(", ver=%d", pnode->sysctl_ver); 537 printf("\n"); 538 if (type != CTLTYPE_NODE) { 539 *sp = *dp = '\0'; 540 return; 541 } 542 } 543 544 /* 545 * if this is an alias and we added our name, that means we 546 * got here by recursing down into the tree, so skip it. The 547 * only way to print an aliased node is with either -M or by 548 * name specifically. 549 */ 550 if (SYSCTL_FLAGS(pnode->sysctl_flags) & SYSCTL_ALIAS && add) { 551 *sp = *dp = '\0'; 552 return; 553 } 554 555 p = findprinter(name, namelen); 556 if (type != CTLTYPE_NODE && p != NULL) { 557 (*p->ps_p)(gsname, gdname, NULL, name, namelen, pnode, type, 558 p->ps_d); 559 *sp = *dp = '\0'; 560 return; 561 } 562 563 if (type != CTLTYPE_NODE && pnode->sysctl_size == 0) { 564 rc = sysctl(&name[0], namelen, NULL, &sz, NULL, 0); 565 if (rc == -1) { 566 sysctlerror(1); 567 *sp = *dp = '\0'; 568 return; 569 } 570 if (sz == 0) { 571 if ((Aflag || req) && !Mflag) 572 printf("%s: node contains no data\n", gsname); 573 *sp = *dp = '\0'; 574 return; 575 } 576 } 577 else 578 sz = pnode->sysctl_size; 579 580 switch (type) { 581 case CTLTYPE_NODE: { 582 learn_tree(name, namelen, pnode); 583 node = pnode->sysctl_child; 584 if (node == NULL) { 585 if (p != NULL) 586 (*p->ps_p)(gsname, gdname, NULL, name, namelen, 587 pnode, type, p->ps_d); 588 else if ((Aflag || req) && !Mflag) 589 printf("%s: no children\n", gsname); 590 } 591 else { 592 req = 0; 593 for (ni = 0; ni < pnode->sysctl_clen; ni++) { 594 name[namelen] = node[ni].sysctl_num; 595 if ((node[ni].sysctl_flags & SYSCTL_HIDDEN) && 596 !(Aflag || req)) 597 continue; 598 print_tree(name, namelen + 1, &node[ni], 599 SYSCTL_TYPE(node[ni].sysctl_flags), 600 1); 601 } 602 } 603 break; 604 } 605 case CTLTYPE_INT: { 606 int i; 607 rc = sysctl(name, namelen, &i, &sz, NULL, 0); 608 if (rc == -1) { 609 sysctlerror(1); 610 break; 611 } 612 display_number(pnode, gsname, &i, sizeof(i), DISPLAY_VALUE); 613 break; 614 } 615 case CTLTYPE_STRING: { 616 unsigned char buf[1024], *tbuf; 617 tbuf = buf; 618 sz = sizeof(buf); 619 rc = sysctl(&name[0], namelen, tbuf, &sz, NULL, 0); 620 if (rc == -1 && errno == ENOMEM) { 621 tbuf = malloc(sz); 622 if (tbuf == NULL) { 623 sysctlerror(1); 624 break; 625 } 626 rc = sysctl(&name[0], namelen, tbuf, &sz, NULL, 0); 627 } 628 if (rc == -1) 629 sysctlerror(1); 630 else 631 display_string(pnode, gsname, buf, sz, DISPLAY_VALUE); 632 if (tbuf != buf) 633 free(tbuf); 634 break; 635 } 636 case CTLTYPE_QUAD: { 637 u_quad_t q; 638 sz = sizeof(q); 639 rc = sysctl(&name[0], namelen, &q, &sz, NULL, 0); 640 if (rc == -1) { 641 sysctlerror(1); 642 break; 643 } 644 display_number(pnode, gsname, &q, sizeof(q), DISPLAY_VALUE); 645 break; 646 } 647 case CTLTYPE_STRUCT: { 648 /* 649 * we shouldn't actually get here, but if we 650 * do, would it be nice to have *something* to 651 * do other than completely ignore the 652 * request. 653 */ 654 unsigned char *d; 655 if ((d = malloc(sz)) == NULL) { 656 fprintf(warnfp, "%s: !malloc failed!\n", gsname); 657 break; 658 } 659 rc = sysctl(&name[0], namelen, d, &sz, NULL, 0); 660 if (rc == -1) { 661 sysctlerror(1); 662 break; 663 } 664 display_struct(pnode, gsname, d, sz, DISPLAY_VALUE); 665 free(d); 666 break; 667 } 668 default: 669 /* should i print an error here? */ 670 break; 671 } 672 673 *sp = *dp = '\0'; 674 } 675 676 /* 677 * ******************************************************************** 678 * parse a request, possibly determining that it's a create or destroy 679 * request 680 * ******************************************************************** 681 */ 682 static void 683 parse(char *l) 684 { 685 struct sysctlnode *node; 686 struct handlespec *w; 687 int name[CTL_MAXNAME]; 688 u_int namelen, type; 689 char *key, *value, *dot; 690 size_t sz; 691 692 req = 1; 693 key = l; 694 value = strchr(l, '='); 695 if (value != NULL) { 696 if (!wflag) { 697 fprintf(warnfp, 698 "%s: Must specify -w to set variables\n", 699 getprogname()); 700 exit(1); 701 } 702 *value++ = '\0'; 703 } 704 705 if ((dot = strpbrk(key, "./")) == NULL) 706 sep[0] = '.'; 707 else 708 sep[0] = dot[0]; 709 sep[1] = '\0'; 710 711 if (key[0] == sep[0] && key[1] == sep[0]) { 712 if (value != NULL) 713 value[-1] = '='; 714 if (strncmp(key + 2, "create=", 7) == 0) 715 cparse(key + 9); 716 else if (strncmp(key + 2, "destroy=", 8) == 0) 717 dparse(key + 10); 718 else 719 fprintf(warnfp, "%s: unable to parse '%s'\n", 720 getprogname(), key); 721 return; 722 } 723 724 node = &my_root; 725 namelen = CTL_MAXNAME; 726 sz = sizeof(gsname); 727 728 if (sysctlgetmibinfo(key, &name[0], &namelen, gsname, &sz, &node) == -1) 729 { 730 fprintf(warnfp, "%s: %s level name '%s' in '%s' is invalid\n", 731 getprogname(), lname[namelen], gsname, l); 732 exit(1); 733 } 734 735 type = SYSCTL_TYPE(node->sysctl_flags); 736 737 if (value == NULL) { 738 print_tree(&name[0], namelen, node, type, 0); 739 gsname[0] = '\0'; 740 return; 741 } 742 743 if (type != CTLTYPE_NODE && (w = findwriter(name, namelen)) != NULL) { 744 (*w->ps_w)(gsname, gdname, value, name, namelen, node, type, 745 w->ps_d); 746 gsname[0] = '\0'; 747 return; 748 } 749 750 switch (type) { 751 case CTLTYPE_NODE: 752 /* 753 * XXX old behavior is to print. should we error instead? 754 */ 755 print_tree(&name[0], namelen, node, CTLTYPE_NODE, 1); 756 break; 757 case CTLTYPE_INT: 758 write_number(&name[0], namelen, node, value); 759 break; 760 case CTLTYPE_STRING: 761 write_string(&name[0], namelen, node, value); 762 break; 763 case CTLTYPE_QUAD: 764 write_number(&name[0], namelen, node, value); 765 break; 766 case CTLTYPE_STRUCT: 767 /* 768 * XXX old behavior is to print. should we error instead? 769 */ 770 /* fprintf(warnfp, "you can't write to %s\n", gsname); */ 771 print_tree(&name[0], namelen, node, type, 0); 772 break; 773 } 774 } 775 776 /* 777 778 //create=foo.bar.whatever..., 779 [type=(int|quad|string|struct|node),] 780 [size=###,] 781 [n=###,] 782 [flags=(tiohxparw12),] 783 [addr=0x####,|symbol=...|value=...] 784 785 size is optional for some types. type must be set before anything 786 else. nodes can have [r12whp], but nothing else applies. if no 787 size or type is given, node is asserted. writeable is the default, 788 with [r12w] being read-only, writeable below securelevel 1, 789 writeable below securelevel 2, and unconditionally writeable 790 respectively. if you specify addr, it is assumed to be the name of 791 a kernel symbol, if value, SYSCTL_OWNDATA will be asserted for 792 strings, SYSCTL_IMMEDIATE for ints and u_quad_ts. you cannot 793 specify both value and addr. 794 795 */ 796 797 static void 798 cparse(char *l) 799 { 800 struct sysctlnode node; 801 size_t sz; 802 char *nname, *key, *value, *data, *addr, *c, *t; 803 int name[CTL_MAXNAME], i, rc, method, flags, rw; 804 u_int namelen, type; 805 u_quad_t q; 806 long li, lo; 807 808 /* 809 * these are the pieces that make up the description of a new 810 * node 811 */ 812 memset(&node, 0, sizeof(node)); 813 node.sysctl_num = CTL_CREATE; /* any number is fine */ 814 flags = 0; 815 rw = -1; 816 type = 0; 817 sz = 0; 818 data = addr = NULL; 819 memset(name, 0, sizeof(name)); 820 namelen = 0; 821 method = 0; 822 823 /* 824 * misc stuff used when constructing 825 */ 826 i = 0; 827 q = 0; 828 key = NULL; 829 value = NULL; 830 831 /* 832 * the name of the thing we're trying to create is first, so 833 * pick it off. 834 */ 835 nname = l; 836 if ((c = strchr(nname, ',')) != NULL) 837 *c++ = '\0'; 838 839 while (c != NULL) { 840 841 /* 842 * pull off the next "key=value" pair 843 */ 844 key = c; 845 if ((t = strchr(key, '=')) != NULL) { 846 *t++ = '\0'; 847 value = t; 848 } 849 else 850 value = NULL; 851 852 /* 853 * if the "key" is "value", then that eats the rest of 854 * the string, so we're done, otherwise bite it off at 855 * the next comma. 856 */ 857 if (strcmp(key, "value") == 0) { 858 c = NULL; 859 data = value; 860 break; 861 } 862 else { 863 if ((c = strchr(value, ',')) != NULL) 864 *c++ = '\0'; 865 } 866 867 /* 868 * note that we (mostly) let the invoker of sysctl(8) 869 * play rampant here and depend on the kernel to tell 870 * them that they were wrong. well...within reason. 871 * we later check the various parameters against each 872 * other to make sure it makes some sort of sense. 873 */ 874 if (strcmp(key, "addr") == 0) { 875 /* 876 * we can't check these two. only the kernel 877 * can tell us when it fails to find the name 878 * (or if the address is invalid). 879 */ 880 if (method != 0) { 881 fprintf(warnfp, 882 "%s: %s: already have %s for new node\n", 883 getprogname(), nname, 884 method == CTL_CREATE ? "addr" : "symbol"); 885 exit(1); 886 } 887 errno = 0; 888 addr = (void*)strtoul(value, &t, 0); 889 if (*t != '\0' || errno != 0) { 890 fprintf(warnfp, 891 "%s: %s: '%s' is not a valid address\n", 892 getprogname(), nname, value); 893 exit(1); 894 } 895 method = CTL_CREATE; 896 } 897 else if (strcmp(key, "symbol") == 0) { 898 if (method != 0) { 899 fprintf(warnfp, 900 "%s: %s: already have %s for new node\n", 901 getprogname(), nname, 902 method == CTL_CREATE ? "addr" : "symbol"); 903 exit(1); 904 } 905 addr = value; 906 method = CTL_CREATESYM; 907 } 908 else if (strcmp(key, "type") == 0) { 909 if (strcmp(value, "node") == 0) 910 type = CTLTYPE_NODE; 911 else if (strcmp(value, "int") == 0) { 912 sz = sizeof(int); 913 type = CTLTYPE_INT; 914 } 915 else if (strcmp(value, "string") == 0) 916 type = CTLTYPE_STRING; 917 else if (strcmp(value, "quad") == 0) { 918 sz = sizeof(u_quad_t); 919 type = CTLTYPE_QUAD; 920 } 921 else if (strcmp(value, "struct") == 0) 922 type = CTLTYPE_STRUCT; 923 else { 924 fprintf(warnfp, 925 "%s: %s: '%s' is not a valid type\n", 926 getprogname(), nname, value); 927 exit(1); 928 } 929 } 930 else if (strcmp(key, "size") == 0) { 931 errno = 0; 932 /* 933 * yes, i know size_t is not an unsigned long, 934 * but we can all agree that it ought to be, 935 * right? 936 */ 937 sz = strtoul(value, &t, 0); 938 if (*t != '\0' || errno != 0) { 939 fprintf(warnfp, 940 "%s: %s: '%s' is not a valid size\n", 941 getprogname(), nname, value); 942 exit(1); 943 } 944 } 945 else if (strcmp(key, "n") == 0) { 946 errno = 0; 947 li = strtol(value, &t, 0); 948 node.sysctl_num = li; 949 lo = node.sysctl_num; 950 if (*t != '\0' || errno != 0 || li != lo || lo < 0) { 951 fprintf(warnfp, 952 "%s: %s: '%s' is not a valid mib number\n", 953 getprogname(), nname, value); 954 exit(1); 955 } 956 } 957 else if (strcmp(key, "flags") == 0) { 958 t = value; 959 while (*t != '\0') { 960 switch (*t) { 961 case 'a': 962 flags |= SYSCTL_ANYWRITE; 963 break; 964 case 'h': 965 flags |= SYSCTL_HIDDEN; 966 break; 967 case 'i': 968 flags |= SYSCTL_IMMEDIATE; 969 break; 970 case 'o': 971 flags |= SYSCTL_OWNDATA; 972 break; 973 case 'p': 974 flags |= SYSCTL_PRIVATE; 975 break; 976 case 'x': 977 flags |= SYSCTL_HEX; 978 break; 979 980 case 'r': 981 rw = SYSCTL_READONLY; 982 break; 983 case '1': 984 rw = SYSCTL_READONLY1; 985 break; 986 case '2': 987 rw = SYSCTL_READONLY2; 988 break; 989 case 'w': 990 rw = SYSCTL_READWRITE; 991 break; 992 default: 993 fprintf(warnfp, 994 "%s: %s: '%c' is not a valid flag\n", 995 getprogname(), nname, *t); 996 exit(1); 997 } 998 t++; 999 } 1000 } 1001 else { 1002 fprintf(warnfp, "%s: %s: unrecognized keyword '%s'\n", 1003 getprogname(), nname, key); 1004 exit(1); 1005 } 1006 } 1007 1008 /* 1009 * now that we've finished parsing the given string, fill in 1010 * anything they didn't specify 1011 */ 1012 if (type == 0) 1013 type = CTLTYPE_NODE; 1014 1015 /* 1016 * the "data" can be interpreted various ways depending on the 1017 * type of node we're creating, as can the size 1018 */ 1019 if (data != NULL) { 1020 if (addr != NULL) { 1021 fprintf(warnfp, 1022 "%s: %s: cannot specify both value and " 1023 "address\n", getprogname(), nname); 1024 exit(1); 1025 } 1026 1027 switch (type) { 1028 case CTLTYPE_INT: 1029 errno = 0; 1030 li = strtol(data, &t, 0); 1031 i = li; 1032 lo = i; 1033 if (*t != '\0' || errno != 0 || li != lo || lo < 0) { 1034 fprintf(warnfp, 1035 "%s: %s: '%s' is not a valid integer\n", 1036 getprogname(), nname, value); 1037 exit(1); 1038 } 1039 if (!(flags & SYSCTL_OWNDATA)) { 1040 flags |= SYSCTL_IMMEDIATE; 1041 node.sysctl_idata = i; 1042 } 1043 else 1044 node.sysctl_data = &i; 1045 if (sz == 0) 1046 sz = sizeof(int); 1047 break; 1048 case CTLTYPE_STRING: 1049 flags |= SYSCTL_OWNDATA; 1050 node.sysctl_data = data; 1051 if (sz == 0) 1052 sz = strlen(data) + 1; 1053 else if (sz < strlen(data) + 1) { 1054 fprintf(warnfp, "%s: %s: ignoring size=%zu for " 1055 "string node, too small for given " 1056 "value\n", getprogname(), nname, sz); 1057 sz = strlen(data) + 1; 1058 } 1059 break; 1060 case CTLTYPE_QUAD: 1061 errno = 0; 1062 q = strtouq(data, &t, 0); 1063 if (*t != '\0' || errno != 0) { 1064 fprintf(warnfp, 1065 "%s: %s: '%s' is not a valid quad\n", 1066 getprogname(), nname, value); 1067 exit(1); 1068 } 1069 if (!(flags & SYSCTL_OWNDATA)) { 1070 flags |= SYSCTL_IMMEDIATE; 1071 node.sysctl_qdata = q; 1072 } 1073 else 1074 node.sysctl_data = &q; 1075 if (sz == 0) 1076 sz = sizeof(u_quad_t); 1077 break; 1078 case CTLTYPE_STRUCT: 1079 fprintf(warnfp, 1080 "%s: %s: struct not initializable\n", 1081 getprogname(), nname); 1082 exit(1); 1083 } 1084 1085 /* 1086 * these methods have all provided local starting 1087 * values that the kernel must copy in 1088 */ 1089 } 1090 1091 /* 1092 * hmm...no data, but we have an address of data. that's 1093 * fine. 1094 */ 1095 else if (addr != 0) 1096 node.sysctl_data = (void*)addr; 1097 1098 /* 1099 * no data and no address? well...okay. we might be able to 1100 * manage that. 1101 */ 1102 else if (type != CTLTYPE_NODE) { 1103 if (sz == 0) { 1104 fprintf(warnfp, 1105 "%s: %s: need a size or a starting value\n", 1106 getprogname(), nname); 1107 exit(1); 1108 } 1109 if (!(flags & SYSCTL_IMMEDIATE)) 1110 flags |= SYSCTL_OWNDATA; 1111 } 1112 1113 /* 1114 * now we do a few sanity checks on the description we've 1115 * assembled 1116 */ 1117 if ((flags & SYSCTL_IMMEDIATE) && 1118 (type == CTLTYPE_STRING || type == CTLTYPE_STRUCT)) { 1119 fprintf(warnfp, 1120 "%s: %s: cannot make an immediate %s\n", 1121 getprogname(), nname, 1122 (type == CTLTYPE_STRING) ? "string" : "struct"); 1123 exit(1); 1124 } 1125 if (type == CTLTYPE_NODE && node.sysctl_data != NULL) { 1126 fprintf(warnfp, "%s: %s: nodes do not have data\n", 1127 getprogname(), nname); 1128 exit(1); 1129 } 1130 1131 /* 1132 * some types must have a particular size 1133 */ 1134 if (sz != 0) { 1135 if ((type == CTLTYPE_INT && sz != sizeof(int)) || 1136 (type == CTLTYPE_QUAD && sz != sizeof(u_quad_t)) || 1137 (type == CTLTYPE_NODE && sz != 0)) { 1138 fprintf(warnfp, "%s: %s: wrong size for type\n", 1139 getprogname(), nname); 1140 exit(1); 1141 } 1142 } 1143 else if (type == CTLTYPE_STRUCT) { 1144 fprintf(warnfp, "%s: %s: struct must have size\n", 1145 getprogname(), nname); 1146 exit(1); 1147 } 1148 1149 /* 1150 * now...if no one said anything yet, we default nodes or 1151 * any type that owns data being writeable, and everything 1152 * else being readonly. 1153 */ 1154 if (rw == -1) { 1155 if (type == CTLTYPE_NODE || 1156 (flags & (SYSCTL_OWNDATA|SYSCTL_IMMEDIATE))) 1157 rw = SYSCTL_READWRITE; 1158 else 1159 rw = SYSCTL_READONLY; 1160 } 1161 1162 /* 1163 * if a kernel address was specified, that can't be made 1164 * writeable by us. 1165 if (rw != SYSCTL_READONLY && addr) { 1166 fprintf(warnfp, "%s: %s: kernel data can only be readable\n", 1167 getprogname(), nname); 1168 exit(1); 1169 } 1170 */ 1171 1172 /* 1173 * what separator were they using in the full name of the new 1174 * node? 1175 */ 1176 if ((t = strpbrk(nname, "./")) == NULL) 1177 sep[0] = '.'; 1178 else 1179 sep[0] = t[0]; 1180 sep[1] = '\0'; 1181 1182 /* 1183 * put it all together, now. t'ain't much, is it? 1184 */ 1185 node.sysctl_flags = flags|rw|type; 1186 node.sysctl_size = sz; 1187 t = strrchr(nname, sep[0]); 1188 if (t != NULL) 1189 strlcpy(node.sysctl_name, t + 1, sizeof(node.sysctl_name)); 1190 else 1191 strlcpy(node.sysctl_name, nname, sizeof(node.sysctl_name)); 1192 1193 /* 1194 * if this is a new top-level node, then we don't need to find 1195 * the mib for its parent 1196 */ 1197 if (t == NULL) { 1198 namelen = 0; 1199 gsname[0] = '\0'; 1200 } 1201 1202 /* 1203 * on the other hand, if it's not a top-level node... 1204 */ 1205 else { 1206 namelen = sizeof(name) / sizeof(name[0]); 1207 sz = sizeof(gsname); 1208 *t = '\0'; 1209 rc = sysctlgetmibinfo(nname, &name[0], &namelen, 1210 gsname, &sz, NULL); 1211 *t = sep[0]; 1212 if (rc == -1) { 1213 fprintf(warnfp, 1214 "%s: %s level name '%s' in '%s' is invalid\n", 1215 getprogname(), lname[namelen], gsname, nname); 1216 exit(1); 1217 } 1218 } 1219 1220 /* 1221 * yes, a new node is being created 1222 */ 1223 if (method != 0) 1224 name[namelen++] = method; 1225 else 1226 name[namelen++] = CTL_CREATE; 1227 1228 sz = sizeof(node); 1229 rc = sysctl(&name[0], namelen, &node, &sz, &node, sizeof(node)); 1230 1231 if (rc == -1) { 1232 fprintf(warnfp, 1233 "%s: %s: CTL_CREATE failed: %s\n", 1234 getprogname(), nname, strerror(errno)); 1235 exit(1); 1236 } 1237 else if (!qflag && !nflag) 1238 printf("%s(%s): (created)\n", nname, st(type)); 1239 } 1240 1241 static void 1242 dparse(char *l) 1243 { 1244 struct sysctlnode node; 1245 size_t sz; 1246 int name[CTL_MAXNAME], rc; 1247 u_int namelen; 1248 1249 memset(name, 0, sizeof(name)); 1250 namelen = sizeof(name) / sizeof(name[0]); 1251 sz = sizeof(gsname); 1252 rc = sysctlgetmibinfo(l, &name[0], &namelen, gsname, &sz, NULL); 1253 if (rc == -1) { 1254 fprintf(warnfp, 1255 "%s: %s level name '%s' in '%s' is invalid\n", 1256 getprogname(), lname[namelen], gsname, l); 1257 exit(1); 1258 } 1259 1260 memset(&node, 0, sizeof(node)); 1261 node.sysctl_num = name[namelen - 1]; 1262 name[namelen - 1] = CTL_DESTROY; 1263 1264 sz = sizeof(node); 1265 rc = sysctl(&name[0], namelen, &node, &sz, &node, sizeof(node)); 1266 1267 if (rc == -1) { 1268 fprintf(warnfp, 1269 "%s: %s: CTL_DESTROY failed: %s\n", 1270 getprogname(), l, strerror(errno)); 1271 exit(1); 1272 } 1273 else if (!qflag && !nflag) 1274 printf("%s(%s): (destroyed)\n", gsname, 1275 st(SYSCTL_TYPE(node.sysctl_flags))); 1276 } 1277 1278 /* 1279 * ******************************************************************** 1280 * when things go wrong... 1281 * ******************************************************************** 1282 */ 1283 static void 1284 usage(void) 1285 { 1286 const char *progname = getprogname(); 1287 1288 (void)fprintf(stderr, 1289 "usage:\t%s %s\n" 1290 "\t%s %s\n" 1291 "\t%s %s\n" 1292 "\t%s %s\n" 1293 "\t%s %s\n" 1294 "\t%s %s\n", 1295 progname, "[-ne] [-x[x]|-r] variable ...", 1296 progname, "[-ne] [-q] -w variable=value ...", 1297 progname, "[-ne] -a", 1298 progname, "[-ne] -A", 1299 progname, "[-ne] -M", 1300 progname, "[-ne] [-q] -f file"); 1301 exit(1); 1302 } 1303 1304 void 1305 sysctlerror(int soft) 1306 { 1307 if (soft) { 1308 switch (errno) { 1309 case ENOENT: 1310 case ENOPROTOOPT: 1311 case ENOTDIR: 1312 case EOPNOTSUPP: 1313 case EPROTONOSUPPORT: 1314 if (Aflag || req) 1315 fprintf(warnfp, 1316 "%s: the value is not available\n", 1317 gsname); 1318 return; 1319 } 1320 } 1321 1322 fprintf(warnfp, "%s: sysctl() failed with %s\n", 1323 gsname, strerror(errno)); 1324 if (!soft) 1325 exit(1); 1326 } 1327 1328 /* 1329 * ******************************************************************** 1330 * how to write to a "simple" node 1331 * ******************************************************************** 1332 */ 1333 static void 1334 write_number(int *name, u_int namelen, struct sysctlnode *node, char *value) 1335 { 1336 int ii, io; 1337 u_quad_t qi, qo; 1338 size_t si, so; 1339 int rc; 1340 void *i, *o; 1341 char *t; 1342 1343 si = so = 0; 1344 i = o = NULL; 1345 errno = 0; 1346 qi = strtouq(value, &t, 0); 1347 if (errno != 0) { 1348 fprintf(warnfp, "%s: value too large\n", value); 1349 exit(1); 1350 } 1351 if (*t != '\0') { 1352 fprintf(warnfp, "%s: not a number\n", value); 1353 exit(1); 1354 } 1355 1356 switch (SYSCTL_TYPE(node->sysctl_flags)) { 1357 case CTLTYPE_INT: 1358 ii = (int)qi; 1359 qo = ii; 1360 if (qo != qi) { 1361 fprintf(warnfp, "%s: value too large\n", value); 1362 exit(1); 1363 } 1364 o = &io; 1365 so = sizeof(io); 1366 i = ⅈ 1367 si = sizeof(ii); 1368 break; 1369 case CTLTYPE_QUAD: 1370 o = &qo; 1371 so = sizeof(qo); 1372 i = &qi; 1373 si = sizeof(qi); 1374 break; 1375 } 1376 1377 rc = sysctl(name, namelen, o, &so, i, si); 1378 if (rc == -1) 1379 sysctlerror(0); 1380 1381 switch (SYSCTL_TYPE(node->sysctl_flags)) { 1382 case CTLTYPE_INT: 1383 display_number(node, gsname, &io, sizeof(io), DISPLAY_OLD); 1384 display_number(node, gsname, &ii, sizeof(ii), DISPLAY_NEW); 1385 break; 1386 case CTLTYPE_QUAD: 1387 display_number(node, gsname, &qo, sizeof(qo), DISPLAY_OLD); 1388 display_number(node, gsname, &qi, sizeof(qi), DISPLAY_NEW); 1389 break; 1390 } 1391 } 1392 1393 static void 1394 write_string(int *name, u_int namelen, struct sysctlnode *node, char *value) 1395 { 1396 char *i, *o; 1397 size_t si, so; 1398 int rc; 1399 1400 i = value; 1401 si = strlen(i) + 1; 1402 so = node->sysctl_size; 1403 if (si > so && so != 0) { 1404 fprintf(warnfp, "%s: string too long\n", value); 1405 exit(1); 1406 } 1407 o = malloc(so); 1408 if (o == NULL) { 1409 fprintf(warnfp, "%s: !malloc failed!\n", gsname); 1410 exit(1); 1411 } 1412 1413 rc = sysctl(name, namelen, o, &so, i, si); 1414 if (rc == -1) 1415 sysctlerror(0); 1416 1417 display_string(node, gsname, o, so, DISPLAY_OLD); 1418 display_string(node, gsname, i, si, DISPLAY_NEW); 1419 free(o); 1420 } 1421 1422 /* 1423 * ******************************************************************** 1424 * simple ways to print stuff consistently 1425 * ******************************************************************** 1426 */ 1427 static void 1428 display_number(const struct sysctlnode *node, const char *name, 1429 const void *data, size_t sz, int n) 1430 { 1431 u_quad_t q; 1432 int i; 1433 1434 if (qflag) 1435 return; 1436 if ((nflag || rflag) && (n == DISPLAY_OLD)) 1437 return; 1438 1439 if (rflag && n != DISPLAY_OLD) { 1440 fwrite(data, sz, 1, stdout); 1441 return; 1442 } 1443 1444 if (!nflag) { 1445 if (n == DISPLAY_VALUE) 1446 printf("%s%s", name, eq); 1447 else if (n == DISPLAY_OLD) 1448 printf("%s: ", name); 1449 } 1450 1451 if (xflag > 1) { 1452 printf("\n"); 1453 hex_dump(data, sz); 1454 return; 1455 } 1456 1457 switch (SYSCTL_TYPE(node->sysctl_flags)) { 1458 case CTLTYPE_INT: 1459 memcpy(&i, data, sz); 1460 if (xflag) 1461 printf("0x%0*x", (int)sz * 2, i); 1462 else if (node->sysctl_flags & SYSCTL_HEX) 1463 printf("%#x", i); 1464 else 1465 printf("%d", i); 1466 break; 1467 case CTLTYPE_QUAD: 1468 memcpy(&q, data, sz); 1469 if (xflag) 1470 printf("0x%0*" PRIx64, (int)sz * 2, q); 1471 else if (node->sysctl_flags & SYSCTL_HEX) 1472 printf("%#" PRIx64, q); 1473 else 1474 printf("%" PRIu64, q); 1475 break; 1476 } 1477 1478 if (n == DISPLAY_OLD) 1479 printf(" -> "); 1480 else 1481 printf("\n"); 1482 } 1483 1484 static void 1485 display_string(const struct sysctlnode *node, const char *name, 1486 const void *data, size_t sz, int n) 1487 { 1488 const unsigned char *buf = data; 1489 int ni; 1490 1491 if (qflag) 1492 return; 1493 if ((nflag || rflag) && (n == DISPLAY_OLD)) 1494 return; 1495 1496 if (rflag && n != DISPLAY_OLD) { 1497 fwrite(data, sz, 1, stdout); 1498 return; 1499 } 1500 1501 if (!nflag) { 1502 if (n == DISPLAY_VALUE) 1503 printf("%s%s", name, eq); 1504 else if (n == DISPLAY_OLD) 1505 printf("%s: ", name); 1506 } 1507 1508 if (xflag > 1) { 1509 printf("\n"); 1510 hex_dump(data, sz); 1511 return; 1512 } 1513 1514 if (xflag || node->sysctl_flags & SYSCTL_HEX) { 1515 for (ni = 0; ni < (int)sz; ni++) { 1516 if (xflag) 1517 printf("%02x", buf[ni]); 1518 if (buf[ni] == '\0') 1519 break; 1520 if (!xflag) 1521 printf("\\x%2.2x", buf[ni]); 1522 } 1523 } 1524 else 1525 printf("%.*s", (int)sz, buf); 1526 1527 if (n == DISPLAY_OLD) 1528 printf(" -> "); 1529 else 1530 printf("\n"); 1531 } 1532 1533 /*ARGSUSED*/ 1534 static void 1535 display_struct(const struct sysctlnode *node, const char *name, 1536 const void *data, size_t sz, int n) 1537 { 1538 const unsigned char *buf = data; 1539 int ni; 1540 size_t more; 1541 1542 if (qflag) 1543 return; 1544 if (!(xflag || rflag)) { 1545 if (Aflag || req) 1546 fprintf(warnfp, 1547 "%s: this type is unknown to this program\n", 1548 gsname); 1549 return; 1550 } 1551 if ((nflag || rflag) && (n == DISPLAY_OLD)) 1552 return; 1553 1554 if (rflag && n != DISPLAY_OLD) { 1555 fwrite(data, sz, 1, stdout); 1556 return; 1557 } 1558 1559 if (!nflag) { 1560 if (n == DISPLAY_VALUE) 1561 printf("%s%s", name, eq); 1562 else if (n == DISPLAY_OLD) 1563 printf("%s: ", name); 1564 } 1565 1566 if (xflag > 1) { 1567 printf("\n"); 1568 hex_dump(data, sz); 1569 return; 1570 } 1571 1572 if (sz > 16) { 1573 more = sz - 16; 1574 sz = 16; 1575 } 1576 else 1577 more = 0; 1578 for (ni = 0; ni < (int)sz; ni++) 1579 printf("%02x", buf[ni]); 1580 if (more) 1581 printf("...(%zu more bytes)", more); 1582 printf("\n"); 1583 } 1584 1585 static void 1586 hex_dump(const unsigned char *buf, size_t len) 1587 { 1588 int i, j; 1589 char line[80], tmp[12]; 1590 1591 memset(line, ' ', sizeof(line)); 1592 for (i = 0, j = 15; i < len; i++) { 1593 j = i % 16; 1594 /* reset line */ 1595 if (j == 0) { 1596 line[58] = '|'; 1597 line[77] = '|'; 1598 line[78] = 0; 1599 snprintf(tmp, sizeof(tmp), "%07d", i); 1600 memcpy(&line[0], tmp, 7); 1601 } 1602 /* copy out hex version of byte */ 1603 snprintf(tmp, sizeof(tmp), "%02x", buf[i]); 1604 memcpy(&line[9 + j * 3], tmp, 2); 1605 /* copy out plain version of byte */ 1606 line[60 + j] = (isprint(buf[i])) ? buf[i] : '.'; 1607 /* print a full line and erase it */ 1608 if (j == 15) { 1609 printf("%s\n", line); 1610 memset(line, ' ', sizeof(line)); 1611 } 1612 } 1613 if (line[0] != ' ') 1614 printf("%s\n", line); 1615 printf("%07zu bytes\n", len); 1616 } 1617 1618 /* 1619 * ******************************************************************** 1620 * functions that handle particular nodes 1621 * ******************************************************************** 1622 */ 1623 /*ARGSUSED*/ 1624 static void 1625 printother(HANDLER_ARGS) 1626 { 1627 int rc; 1628 void *p; 1629 size_t sz1, sz2; 1630 1631 if (!(Aflag || req) || Mflag) 1632 return; 1633 1634 /* 1635 * okay...you asked for it, so let's give it a go 1636 */ 1637 while (type != CTLTYPE_NODE && (xflag || rflag)) { 1638 rc = sysctl(name, namelen, NULL, &sz1, NULL, 0); 1639 if (rc == -1 || sz1 == 0) 1640 break; 1641 p = malloc(sz1); 1642 if (p == NULL) 1643 break; 1644 sz2 = sz1; 1645 rc = sysctl(name, namelen, p, &sz2, NULL, 0); 1646 if (rc == -1 || sz1 != sz2) { 1647 free(p); 1648 break; 1649 } 1650 display_struct(pnode, gsname, p, sz1, DISPLAY_VALUE); 1651 free(p); 1652 return; 1653 } 1654 1655 /* 1656 * that didn't work...do we have a specific message for this 1657 * thing? 1658 */ 1659 if (v != NULL) { 1660 fprintf(warnfp, "%s: use '%s' to view this information\n", 1661 gsname, (const char *)v); 1662 return; 1663 } 1664 1665 /* 1666 * hmm...i wonder if we have any generic hints? 1667 */ 1668 switch (name[0]) { 1669 case CTL_NET: 1670 fprintf(warnfp, "%s: use 'netstat' to view this information\n", 1671 sname); 1672 break; 1673 case CTL_DEBUG: 1674 fprintf(warnfp, "%s: missing 'options DEBUG' from kernel?\n", 1675 sname); 1676 break; 1677 case CTL_DDB: 1678 fprintf(warnfp, "%s: missing 'options DDB' from kernel?\n", 1679 sname); 1680 break; 1681 } 1682 } 1683 1684 /*ARGSUSED*/ 1685 static void 1686 kern_clockrate(HANDLER_ARGS) 1687 { 1688 struct clockinfo clkinfo; 1689 size_t sz; 1690 int rc; 1691 1692 sz = sizeof(clkinfo); 1693 rc = sysctl(name, namelen, &clkinfo, &sz, NULL, 0); 1694 if (rc == -1) { 1695 sysctlerror(1); 1696 return; 1697 } 1698 if (sz != sizeof(clkinfo)) 1699 errx(1, "%s: !returned size wrong!", sname); 1700 1701 if (xflag || rflag) 1702 display_struct(pnode, sname, &clkinfo, sz, 1703 DISPLAY_VALUE); 1704 else if (!nflag) 1705 printf("%s: ", sname); 1706 printf("tick = %d, tickadj = %d, hz = %d, profhz = %d, stathz = %d\n", 1707 clkinfo.tick, clkinfo.tickadj, 1708 clkinfo.hz, clkinfo.profhz, clkinfo.stathz); 1709 } 1710 1711 /*ARGSUSED*/ 1712 static void 1713 kern_boottime(HANDLER_ARGS) 1714 { 1715 struct timeval timeval; 1716 time_t boottime; 1717 size_t sz; 1718 int rc; 1719 1720 sz = sizeof(timeval); 1721 rc = sysctl(name, namelen, &timeval, &sz, NULL, 0); 1722 if (rc == -1) { 1723 sysctlerror(1); 1724 return; 1725 } 1726 if (sz != sizeof(timeval)) 1727 errx(1, "%s: !returned size wrong!", sname); 1728 1729 boottime = timeval.tv_sec; 1730 if (xflag || rflag) 1731 display_struct(pnode, sname, &timeval, sz, 1732 DISPLAY_VALUE); 1733 else if (!nflag) 1734 /* ctime() provides the \n */ 1735 printf("%s%s%s", sname, eq, ctime(&boottime)); 1736 else if (nflag == 1) 1737 printf("%ld\n", (long)boottime); 1738 else 1739 printf("%ld.%06ld\n", (long)timeval.tv_sec, 1740 (long)timeval.tv_usec); 1741 } 1742 1743 /*ARGSUSED*/ 1744 static void 1745 kern_consdev(HANDLER_ARGS) 1746 { 1747 dev_t cons; 1748 size_t sz; 1749 int rc; 1750 1751 sz = sizeof(cons); 1752 rc = sysctl(name, namelen, &cons, &sz, NULL, 0); 1753 if (rc == -1) { 1754 sysctlerror(1); 1755 return; 1756 } 1757 if (sz != sizeof(cons)) 1758 errx(1, "%s: !returned size wrong!", sname); 1759 1760 if (xflag || rflag) 1761 display_struct(pnode, sname, &cons, sz, 1762 DISPLAY_VALUE); 1763 else if (!nflag) 1764 printf("%s%s%s\n", sname, eq, devname(cons, S_IFCHR)); 1765 else 1766 printf("0x%x\n", cons); 1767 } 1768 1769 /*ARGSUSED*/ 1770 static void 1771 kern_cp_time(HANDLER_ARGS) 1772 { 1773 u_int64_t cp_time[CPUSTATES]; 1774 size_t sz; 1775 int rc; 1776 1777 sz = sizeof(cp_time); 1778 rc = sysctl(name, namelen, &cp_time, &sz, NULL, 0); 1779 if (rc == -1) { 1780 sysctlerror(1); 1781 return; 1782 } 1783 if (sz != sizeof(cp_time)) 1784 errx(1, "%s: !returned size wrong!", sname); 1785 1786 if (xflag || rflag) 1787 display_struct(pnode, sname, &cp_time, sz, 1788 DISPLAY_VALUE); 1789 else if (!nflag) 1790 printf("%s: ", sname); 1791 printf("user = %" PRIu64 1792 ", nice = %" PRIu64 1793 ", sys = %" PRIu64 1794 ", intr = %" PRIu64 1795 ", idle = %" PRIu64 1796 "\n", 1797 cp_time[CP_USER], 1798 cp_time[CP_NICE], 1799 cp_time[CP_SYS], 1800 cp_time[CP_INTR], 1801 cp_time[CP_IDLE]); 1802 } 1803 1804 /*ARGSUSED*/ 1805 static void 1806 vm_loadavg(HANDLER_ARGS) 1807 { 1808 struct loadavg loadavg; 1809 size_t sz; 1810 int rc; 1811 1812 sz = sizeof(loadavg); 1813 rc = sysctl(name, namelen, &loadavg, &sz, NULL, 0); 1814 if (rc == -1) { 1815 sysctlerror(1); 1816 return; 1817 } 1818 if (sz != sizeof(loadavg)) 1819 errx(1, "%s: !returned size wrong!", sname); 1820 1821 if (xflag || rflag) 1822 display_struct(pnode, sname, &loadavg, sz, 1823 DISPLAY_VALUE); 1824 else if (!nflag) 1825 printf("%s: ", sname); 1826 printf("%.2f %.2f %.2f\n", 1827 (double) loadavg.ldavg[0] / loadavg.fscale, 1828 (double) loadavg.ldavg[1] / loadavg.fscale, 1829 (double) loadavg.ldavg[2] / loadavg.fscale); 1830 } 1831 1832 /*ARGSUSED*/ 1833 static void 1834 proc_limit(HANDLER_ARGS) 1835 { 1836 u_quad_t olim, *newp, nlim; 1837 size_t osz, nsz; 1838 char *t; 1839 int rc; 1840 1841 osz = sizeof(olim); 1842 if (value != NULL) { 1843 nsz = sizeof(nlim); 1844 newp = &nlim; 1845 if (strcmp(value, "unlimited") == 0) 1846 nlim = RLIM_INFINITY; 1847 else { 1848 errno = 0; 1849 nlim = strtouq(value, &t, 0); 1850 if (*t != '\0' || errno != 0) { 1851 fprintf(warnfp, 1852 "%s: %s: '%s' is not a valid limit\n", 1853 getprogname(), sname, value); 1854 exit(1); 1855 } 1856 } 1857 } 1858 else { 1859 nsz = 0; 1860 newp = NULL; 1861 } 1862 1863 rc = sysctl(name, namelen, &olim, &osz, newp, nsz); 1864 if (rc == -1) { 1865 sysctlerror(newp == NULL); 1866 return; 1867 } 1868 1869 if (newp && qflag) 1870 return; 1871 1872 if (rflag || xflag || olim != RLIM_INFINITY) 1873 display_number(pnode, sname, &olim, sizeof(olim), 1874 newp ? DISPLAY_OLD : DISPLAY_VALUE); 1875 else 1876 display_string(pnode, sname, "unlimited", 10, 1877 newp ? DISPLAY_OLD : DISPLAY_VALUE); 1878 1879 if (newp) { 1880 if (rflag || xflag || nlim != RLIM_INFINITY) 1881 display_number(pnode, sname, &nlim, sizeof(nlim), 1882 DISPLAY_NEW); 1883 else 1884 display_string(pnode, sname, "unlimited", 10, 1885 DISPLAY_NEW); 1886 } 1887 } 1888 1889 #ifdef CPU_DISKINFO 1890 /*ARGSUSED*/ 1891 static void 1892 machdep_diskinfo(HANDLER_ARGS) 1893 { 1894 struct disklist *dl; 1895 struct biosdisk_info *bi; 1896 struct nativedisk_info *ni; 1897 int rc; 1898 size_t sz; 1899 uint i, b, lim; 1900 1901 rc = sysctl(name, namelen, NULL, &sz, NULL, 0); 1902 if (rc == -1) { 1903 sysctlerror(1); 1904 return; 1905 } 1906 dl = malloc(sz); 1907 if (dl == NULL) { 1908 sysctlerror(1); 1909 return; 1910 } 1911 rc = sysctl(name, namelen, dl, &sz, NULL, 0); 1912 if (rc == -1) { 1913 sysctlerror(1); 1914 return; 1915 } 1916 1917 if (!nflag) 1918 printf("%s: ", sname); 1919 lim = dl->dl_nbiosdisks; 1920 if (lim > MAX_BIOSDISKS) 1921 lim = MAX_BIOSDISKS; 1922 for (bi = dl->dl_biosdisks, i = 0; i < lim; bi++, i++) 1923 printf("%x:%" PRIu64 "(%d/%d/%d),%x ", 1924 bi->bi_dev, bi->bi_lbasecs, 1925 bi->bi_cyl, bi->bi_head, bi->bi_sec, 1926 bi->bi_flags); 1927 lim = dl->dl_nnativedisks; 1928 ni = dl->dl_nativedisks; 1929 bi = dl->dl_biosdisks; 1930 /* LINTED -- pointer casts are tedious */ 1931 if ((char *)&ni[lim] != (char *)dl + sz) { 1932 fprintf(warnfp, "size mismatch\n"); 1933 return; 1934 } 1935 for (i = 0; i < lim; ni++, i++) { 1936 char t = ':'; 1937 printf(" %.*s", (int)sizeof ni->ni_devname, 1938 ni->ni_devname); 1939 for (b = 0; b < ni->ni_nmatches; t = ',', b++) 1940 printf("%c%x", t, 1941 bi[ni->ni_biosmatches[b]].bi_dev); 1942 } 1943 printf("\n"); 1944 } 1945 #endif /* CPU_DISKINFO */ 1946
Indexes created Mon Sep 22 13:09:51 GMT 2025