sysctl.c revision 1.165
1 /* $NetBSD: sysctl.c,v 1.165 2023/04/02 18:15:24 ryo 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 */ 60 61 #include <sys/cdefs.h> 62 #ifndef lint 63 __COPYRIGHT("@(#) Copyright (c) 1993\ 64 The Regents of the University of California. All rights reserved."); 65 #endif /* not lint */ 66 67 #ifndef lint 68 #if 0 69 static char sccsid[] = "@(#)sysctl.c 8.1 (Berkeley) 6/6/93"; 70 #else 71 __RCSID("$NetBSD: sysctl.c,v 1.165 2023/04/02 18:15:24 ryo Exp $"); 72 #endif 73 #endif /* not lint */ 74 75 #include <sys/types.h> 76 #include <sys/param.h> 77 #include <sys/sysctl.h> 78 #include <sys/mount.h> 79 #include <sys/resource.h> 80 #include <sys/stat.h> 81 #include <sys/sched.h> 82 #include <sys/socket.h> 83 #include <sys/bitops.h> 84 #include <netinet/in.h> 85 #include <netinet/ip_var.h> 86 #include <netinet/tcp.h> 87 #include <netinet/tcp_timer.h> 88 #include <netinet/tcp_var.h> 89 #include <netinet/icmp6.h> 90 #include <nfs/rpcv2.h> 91 #include <nfs/nfsproto.h> 92 #include <nfs/nfs.h> 93 #include <machine/cpu.h> 94 95 #include <assert.h> 96 #include <ctype.h> 97 #include <err.h> 98 #include <errno.h> 99 #include <inttypes.h> 100 #include <regex.h> 101 #include <stdarg.h> 102 #include <stdio.h> 103 #include <stdlib.h> 104 #include <string.h> 105 #include <time.h> 106 #include <unistd.h> 107 108 #include "prog_ops.h" 109 110 /* 111 * this needs to be able to do the printing and the setting 112 */ 113 #define HANDLER_PROTO const char *, const char *, char *, \ 114 int *, u_int, const struct sysctlnode *, \ 115 u_int, void * 116 #define HANDLER_ARGS const char *sname, const char *dname, char *value, \ 117 int *name, u_int namelen, const struct sysctlnode *pnode, \ 118 u_int type, void *v 119 #define DISPLAY_VALUE 0 120 #define DISPLAY_OLD 1 121 #define DISPLAY_NEW 2 122 123 /* 124 * generic routines 125 */ 126 static const struct handlespec *findhandler(const char *, regex_t *, size_t *); 127 static void canonicalize(const char *, char *); 128 static void purge_tree(struct sysctlnode *); 129 static void print_tree(int *, u_int, struct sysctlnode *, u_int, int, regex_t *, 130 size_t *); 131 static void write_number(int *, u_int, struct sysctlnode *, char *, bool); 132 static void write_string(int *, u_int, struct sysctlnode *, char *, bool); 133 static void display_number(const struct sysctlnode *, const char *, 134 const void *, size_t, int); 135 static void display_string(const struct sysctlnode *, const char *, 136 const void *, size_t, int); 137 static void display_struct(const struct sysctlnode *, const char *, 138 const void *, size_t, int); 139 static void hex_dump(const unsigned char *, size_t); 140 __dead static void usage(void); 141 static void parse(char *, regex_t *, size_t *); 142 static void parse_create(char *); 143 static void parse_destroy(char *); 144 static void parse_describe(char *); 145 static void getdesc1(int *, u_int, struct sysctlnode *); 146 static void getdesc(int *, u_int, struct sysctlnode *); 147 static void trim_whitespace(char *, int); 148 static void sysctlerror(int); 149 static void sysctlparseerror(u_int, const char *); 150 static void sysctlperror(const char *, ...) __printflike(1, 2); 151 #define EXIT(n) do { \ 152 if (fn == NULL) exit(n); else return; } while (/*CONSTCOND*/0) 153 154 /* 155 * "borrowed" from libc:sysctlgetmibinfo.c 156 */ 157 int __learn_tree(int *, u_int, struct sysctlnode *); 158 159 /* 160 * "handlers" 161 */ 162 static void printother(HANDLER_PROTO); 163 static void kern_clockrate(HANDLER_PROTO); 164 static void kern_boottime(HANDLER_PROTO); 165 static void kern_consdev(HANDLER_PROTO); 166 static void kern_cp_time(HANDLER_PROTO); 167 static void kern_cp_id(HANDLER_PROTO); 168 static void kern_drivers(HANDLER_PROTO); 169 static void vm_loadavg(HANDLER_PROTO); 170 static void proc_limit(HANDLER_PROTO); 171 #ifdef CPU_DISKINFO 172 static void machdep_diskinfo(HANDLER_PROTO); 173 #endif /* CPU_DISKINFO */ 174 static void mode_bits(HANDLER_PROTO); 175 static void reserve(HANDLER_PROTO); 176 177 static const struct handlespec { 178 const char *ps_re; 179 void (*ps_p)(HANDLER_PROTO); 180 void (*ps_w)(HANDLER_PROTO); 181 const void *ps_d; 182 } handlers[] = { 183 { "/kern/clockrate", kern_clockrate, NULL, NULL }, 184 { "/kern/evcnt", printother, NULL, "vmstat -e" }, 185 { "/kern/vnode", printother, NULL, "pstat" }, 186 { "/kern/proc(2|_args)?", printother, NULL, "ps" }, 187 { "/kern/file2?", printother, NULL, "pstat" }, 188 { "/kern/ntptime", printother, NULL, 189 "ntpdc -c kerninfo" }, 190 { "/kern/msgbuf", printother, NULL, "dmesg" }, 191 { "/kern/boottime", kern_boottime, NULL, NULL }, 192 { "/kern/consdev", kern_consdev, NULL, NULL }, 193 { "/kern/cp_time(/[0-9]+)?", kern_cp_time, NULL, NULL }, 194 { "/kern/hashstat", printother, NULL, "vmstat -H" }, 195 { "/kern/sysvipc_info", printother, NULL, "ipcs" }, 196 { "/kern/cp_id(/[0-9]+)?", kern_cp_id, NULL, NULL }, 197 198 { "/kern/coredump/setid/mode", mode_bits, mode_bits, NULL }, 199 { "/kern/drivers", kern_drivers, NULL, NULL }, 200 201 { "/kern/intr/list", printother, NULL, "intrctl" }, 202 { "/kern/intr/affinity", printother, NULL, "intrctl" }, 203 { "/kern/intr/intr", printother, NULL, "intrctl" }, 204 { "/kern/intr/nointr", printother, NULL, "intrctl" }, 205 206 { "/vm/vmmeter", printother, NULL, 207 "vmstat' or 'systat" }, 208 { "/vm/loadavg", vm_loadavg, NULL, NULL }, 209 { "/vm/uvmexp2?", printother, NULL, 210 "vmstat' or 'systat" }, 211 212 { "/vfs/nfs/nfsstats", printother, NULL, "nfsstat" }, 213 214 { "/net/inet6?/tcp6?/ident", printother, NULL, "identd" }, 215 { "/net/inet6/icmp6/nd6_[dp]rlist", printother, NULL, "ndp" }, 216 { "/net/inet6/ip6/addctlpolicy", printother, NULL, 217 "ip6addrctl" }, 218 { "/net/key/dumps[ap]", printother, NULL, "setkey" }, 219 { "/net/[^/]+/[^/]+/pcblist", printother, NULL, 220 "netstat' or 'sockstat" }, 221 { "/net/(inet|inet6)/[^/]+/stats", printother, NULL, "netstat"}, 222 { "/net/inet/(ipip|esp|ah|ipcomp)/.*_stats", 223 printother, NULL, "netstat"}, 224 { "/net/inet/ipsec/ipsecstats", printother, NULL, "netstat"}, 225 { "/net/bpf/(stats|peers)", printother, NULL, "netstat"}, 226 227 { "/net/inet.*/tcp.*/deb.*", printother, NULL, "trpt" }, 228 229 { "/net/inet.*/ip.*/anonportalgo/reserve", reserve, reserve, NULL }, 230 231 { "/net/ns/spp/deb.*", printother, NULL, "trsp" }, 232 233 { "/hw/diskstats", printother, NULL, "iostat" }, 234 235 #ifdef CPU_CONSDEV 236 { "/machdep/consdev", kern_consdev, NULL, NULL }, 237 #endif /* CPU_CONSDEV */ 238 #ifdef CPU_DISKINFO 239 { "/machdep/diskinfo", machdep_diskinfo, NULL, NULL }, 240 #endif /* CPU_CONSDEV */ 241 242 { "/proc/[^/]+/rlimit/[^/]+/[^/]+", proc_limit, proc_limit, NULL }, 243 244 /* 245 * these will only be called when the given node has no children 246 */ 247 { "/net/[^/]+", printother, NULL, NULL }, 248 { "/debug", printother, NULL, NULL }, 249 { "/ddb", printother, NULL, NULL }, 250 { "/vendor", printother, NULL, NULL }, 251 252 { NULL, NULL, NULL, NULL }, 253 }; 254 255 struct sysctlnode my_root = { 256 .sysctl_flags = SYSCTL_VERSION|CTLFLAG_ROOT|CTLTYPE_NODE, 257 .sysctl_size = sizeof(struct sysctlnode), 258 .sysctl_num = 0, 259 .sysctl_name = "(prog_root)", 260 }; 261 262 int Aflag, aflag, dflag, Mflag, nflag, qflag, rflag, wflag, xflag; 263 size_t nr; 264 char *fn; 265 int req, stale, errs; 266 FILE *warnfp = stderr; 267 268 #define MAXPORTS 0x10000 269 270 /* 271 * vah-riables n stuff 272 */ 273 char gsname[SYSCTL_NAMELEN * CTL_MAXNAME + CTL_MAXNAME], 274 canonname[SYSCTL_NAMELEN * CTL_MAXNAME + CTL_MAXNAME], 275 gdname[10 * CTL_MAXNAME + CTL_MAXNAME]; 276 char sep[] = "."; 277 const char *eq = " = "; 278 const char *lname[] = { 279 "top", "second", "third", "fourth", "fifth", "sixth", 280 "seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth" 281 }; 282 283 /* 284 * you've heard of main, haven't you? 285 */ 286 int 287 main(int argc, char *argv[]) 288 { 289 int name[CTL_MAXNAME]; 290 int ch; 291 size_t lastcompiled = 0; 292 regex_t *re; 293 294 setprogname(argv[0]); 295 while ((ch = getopt(argc, argv, "Aabdef:Mnqrwx")) != -1) { 296 switch (ch) { 297 case 'A': 298 Aflag++; 299 break; 300 case 'a': 301 aflag++; 302 break; 303 case 'd': 304 dflag++; 305 break; 306 case 'e': 307 eq = "="; 308 break; 309 case 'f': 310 fn = optarg; 311 wflag++; 312 break; 313 case 'M': 314 Mflag++; 315 break; 316 case 'n': 317 nflag++; 318 break; 319 case 'q': 320 qflag++; 321 break; 322 case 'b': /* FreeBSD compat */ 323 case 'r': 324 rflag++; 325 break; 326 case 'w': 327 wflag++; 328 break; 329 case 'x': 330 xflag++; 331 break; 332 default: 333 usage(); 334 } 335 } 336 337 argc -= optind; 338 argv += optind; 339 340 if (xflag && rflag) 341 usage(); 342 /* if ((xflag || rflag) && wflag) 343 usage(); */ 344 /* if (aflag && (Mflag || qflag)) 345 usage(); */ 346 if ((aflag || Aflag) && qflag) 347 usage(); 348 if ((Aflag || Mflag || dflag) && argc == 0 && fn == NULL) 349 aflag = 1; 350 351 if (prog_init && prog_init() == -1) 352 err(EXIT_FAILURE, "prog init failed"); 353 354 if (Aflag) 355 warnfp = stdout; 356 stale = req = 0; 357 358 if ((re = malloc(sizeof(*re) * __arraycount(handlers))) == NULL) 359 err(EXIT_FAILURE, "malloc regex"); 360 361 if (aflag) { 362 print_tree(&name[0], 0, NULL, CTLTYPE_NODE, 1, 363 re, &lastcompiled); 364 /* if (argc == 0) */ 365 return (0); 366 } 367 368 if (fn) { 369 FILE *fp; 370 char *l; 371 372 fp = fopen(fn, "r"); 373 if (fp == NULL) { 374 err(EXIT_FAILURE, "%s", fn); 375 } else { 376 nr = 0; 377 while ((l = fparseln(fp, NULL, &nr, NULL, 0)) != NULL) 378 { 379 if (*l) { 380 parse(l, re, &lastcompiled); 381 free(l); 382 } 383 } 384 fclose(fp); 385 } 386 return errs ? 1 : 0; 387 } 388 389 if (argc == 0) 390 usage(); 391 392 while (argc-- > 0) 393 parse(*argv++, re, &lastcompiled); 394 395 return errs ? EXIT_FAILURE : EXIT_SUCCESS; 396 } 397 398 /* 399 * ******************************************************************** 400 * how to find someone special to handle the reading (or maybe even 401 * writing) of a particular node 402 * ******************************************************************** 403 */ 404 static const struct handlespec * 405 findhandler(const char *s, regex_t *re, size_t *lastcompiled) 406 { 407 const struct handlespec *p; 408 size_t i, l; 409 int j; 410 char eb[64]; 411 regmatch_t match; 412 413 p = &handlers[0]; 414 l = strlen(s); 415 for (i = 0; p[i].ps_re != NULL; i++) { 416 if (i >= *lastcompiled) { 417 j = regcomp(&re[i], p[i].ps_re, REG_EXTENDED); 418 if (j != 0) { 419 regerror(j, &re[i], eb, sizeof(eb)); 420 errx(EXIT_FAILURE, "regcomp: %s: %s", p[i].ps_re, eb); 421 } 422 *lastcompiled = i + 1; 423 } 424 j = regexec(&re[i], s, 1, &match, 0); 425 if (j == 0) { 426 if (match.rm_so == 0 && match.rm_eo == (int)l) 427 return &p[i]; 428 } 429 else if (j != REG_NOMATCH) { 430 regerror(j, &re[i], eb, sizeof(eb)); 431 errx(EXIT_FAILURE, "regexec: %s: %s", p[i].ps_re, eb); 432 } 433 } 434 435 return NULL; 436 } 437 438 /* 439 * after sysctlgetmibinfo is done with the name, we convert all 440 * separators to / and stuff one at the front if it was missing 441 */ 442 static void 443 canonicalize(const char *i, char *o) 444 { 445 const char *t; 446 char p[SYSCTL_NAMELEN + 1]; 447 int l; 448 449 if (i[0] != *sep) { 450 o[0] = '/'; 451 o[1] = '\0'; 452 } 453 else 454 o[0] = '\0'; 455 456 t = i; 457 do { 458 i = t; 459 t = strchr(i, sep[0]); 460 if (t == NULL) 461 strcat(o, i); 462 else { 463 l = t - i; 464 t++; 465 memcpy(p, i, l); 466 p[l] = '\0'; 467 strcat(o, p); 468 strcat(o, "/"); 469 } 470 } while (t != NULL); 471 } 472 473 /* 474 * ******************************************************************** 475 * convert this special number to a special string so we can print the 476 * mib 477 * ******************************************************************** 478 */ 479 static const char * 480 sf(u_int f) 481 { 482 static char s[256]; 483 const char *c; 484 485 s[0] = '\0'; 486 c = ""; 487 488 #define print_flag(_f, _s, _c, _q, _x) \ 489 if (((_f) & (__CONCAT(CTLFLAG_,_x))) == (__CONCAT(CTLFLAG_,_q))) { \ 490 strlcat((_s), (_c), sizeof(_s)); \ 491 strlcat((_s), __STRING(_q), sizeof(_s)); \ 492 (_c) = ","; \ 493 (_f) &= ~(__CONCAT(CTLFLAG_,_x)); \ 494 } 495 print_flag(f, s, c, READONLY, READWRITE); 496 print_flag(f, s, c, READWRITE, READWRITE); 497 print_flag(f, s, c, ANYWRITE, ANYWRITE); 498 print_flag(f, s, c, PRIVATE, PRIVATE); 499 print_flag(f, s, c, PERMANENT, PERMANENT); 500 print_flag(f, s, c, OWNDATA, OWNDATA); 501 print_flag(f, s, c, IMMEDIATE, IMMEDIATE); 502 print_flag(f, s, c, HEX, HEX); 503 print_flag(f, s, c, ROOT, ROOT); 504 print_flag(f, s, c, ANYNUMBER, ANYNUMBER); 505 print_flag(f, s, c, HIDDEN, HIDDEN); 506 print_flag(f, s, c, ALIAS, ALIAS); 507 #undef print_flag 508 509 if (f) { 510 char foo[9]; 511 snprintf(foo, sizeof(foo), "%x", f); 512 strlcat(s, c, sizeof(s)); 513 strlcat(s, foo, sizeof(s)); 514 } 515 516 return (s); 517 } 518 519 static const char * 520 st(u_int t) 521 { 522 523 switch (t) { 524 case CTLTYPE_NODE: 525 return "NODE"; 526 case CTLTYPE_INT: 527 return "INT"; 528 case CTLTYPE_STRING: 529 return "STRING"; 530 case CTLTYPE_QUAD: 531 return "QUAD"; 532 case CTLTYPE_STRUCT: 533 return "STRUCT"; 534 case CTLTYPE_BOOL: 535 return "BOOL"; 536 } 537 538 return "???"; 539 } 540 541 /* 542 * ******************************************************************** 543 * recursively eliminate all data belonging to the given node 544 * ******************************************************************** 545 */ 546 static void 547 purge_tree(struct sysctlnode *rnode) 548 { 549 struct sysctlnode *node; 550 551 if (rnode == NULL || 552 SYSCTL_TYPE(rnode->sysctl_flags) != CTLTYPE_NODE || 553 rnode->sysctl_child == NULL) 554 return; 555 556 for (node = rnode->sysctl_child; 557 node < &rnode->sysctl_child[rnode->sysctl_clen]; 558 node++) 559 purge_tree(node); 560 free(rnode->sysctl_child); 561 rnode->sysctl_csize = 0; 562 rnode->sysctl_clen = 0; 563 rnode->sysctl_child = NULL; 564 565 if (rnode->sysctl_desc == (const char*)-1) 566 rnode->sysctl_desc = NULL; 567 if (rnode->sysctl_desc != NULL) 568 free(__UNCONST(rnode->sysctl_desc)); 569 rnode->sysctl_desc = NULL; 570 } 571 572 static void __attribute__((__format__(__printf__, 3, 4))) 573 appendprintf(char **bp, size_t *lbp, const char *fmt, ...) 574 { 575 int r; 576 va_list ap; 577 578 va_start(ap, fmt); 579 r = vsnprintf(*bp, *lbp, fmt, ap); 580 va_end(ap); 581 if (r < 0 || (size_t)r > *lbp) 582 r = *lbp; 583 *bp += r; 584 *lbp -= r; 585 } 586 587 /* 588 * ******************************************************************** 589 * print this node and any others underneath it 590 * ******************************************************************** 591 */ 592 static void 593 print_tree(int *name, u_int namelen, struct sysctlnode *pnode, u_int type, 594 int add, regex_t *re, size_t *lastcompiled) 595 { 596 struct sysctlnode *node; 597 int rc; 598 size_t ni, sz, ldp, lsp; 599 char *sp, *dp, *tsp, *tdp; 600 const struct handlespec *p; 601 602 sp = tsp = &gsname[strlen(gsname)]; 603 dp = tdp = &gdname[strlen(gdname)]; 604 ldp = sizeof(gdname) - (dp - gdname); 605 lsp = sizeof(gsname) - (sp - gsname); 606 607 if (sp != &gsname[0] && dp == &gdname[0]) { 608 /* 609 * aw...shucks. now we must play catch up 610 */ 611 for (ni = 0; ni < namelen; ni++) 612 appendprintf(&tdp, &ldp, "%s%d", ni > 0 ? "." : "", 613 name[ni]); 614 } 615 616 if (pnode == NULL) 617 pnode = &my_root; 618 else if (add) { 619 appendprintf(&tsp, &lsp, "%s%s", namelen > 1 ? sep : "", 620 pnode->sysctl_name); 621 appendprintf(&tdp, &ldp, "%s%d", namelen > 1 ? "." : "", 622 pnode->sysctl_num); 623 } 624 625 if (Mflag && pnode != &my_root) { 626 if (nflag) 627 printf("%s: ", gdname); 628 else 629 printf("%s (%s): ", gsname, gdname); 630 printf("CTLTYPE_%s", st(type)); 631 if (type == CTLTYPE_NODE) { 632 if (SYSCTL_FLAGS(pnode->sysctl_flags) & CTLFLAG_ALIAS) 633 printf(", alias %d", 634 pnode->sysctl_alias); 635 else 636 printf(", children %d/%d", 637 pnode->sysctl_clen, 638 pnode->sysctl_csize); 639 } 640 printf(", size %zu", pnode->sysctl_size); 641 printf(", flags 0x%x<%s>", 642 SYSCTL_FLAGS(pnode->sysctl_flags), 643 sf(SYSCTL_FLAGS(pnode->sysctl_flags))); 644 if (pnode->sysctl_func) 645 printf(", func=%p", pnode->sysctl_func); 646 printf(", ver=%d", pnode->sysctl_ver); 647 printf("\n"); 648 if (type != CTLTYPE_NODE) { 649 *sp = *dp = '\0'; 650 return; 651 } 652 } 653 654 if (dflag && pnode != &my_root) { 655 if (Aflag || type != CTLTYPE_NODE) { 656 if (pnode->sysctl_desc == NULL) 657 getdesc1(name, namelen, pnode); 658 if (Aflag || !add || 659 (pnode->sysctl_desc != NULL && 660 pnode->sysctl_desc != (const char*)-1)) { 661 if (!nflag) 662 printf("%s: ", gsname); 663 if (pnode->sysctl_desc == NULL || 664 pnode->sysctl_desc == (const char*)-1) 665 printf("(no description)\n"); 666 else 667 printf("%s\n", pnode->sysctl_desc); 668 } 669 } 670 671 if (type != CTLTYPE_NODE) { 672 *sp = *dp = '\0'; 673 return; 674 } 675 } 676 677 /* 678 * if this is an alias and we added our name, that means we 679 * got here by recursing down into the tree, so skip it. The 680 * only way to print an aliased node is with either -M or by 681 * name specifically. 682 */ 683 if (SYSCTL_FLAGS(pnode->sysctl_flags) & CTLFLAG_ALIAS && add) { 684 *sp = *dp = '\0'; 685 return; 686 } 687 688 canonicalize(gsname, canonname); 689 p = findhandler(canonname, re, lastcompiled); 690 if (type != CTLTYPE_NODE && p != NULL) { 691 if (p->ps_p == NULL) { 692 sysctlperror("Cannot print `%s': %s\n", gsname, 693 strerror(EOPNOTSUPP)); 694 exit(EXIT_FAILURE); 695 } 696 (*p->ps_p)(gsname, gdname, NULL, name, namelen, pnode, type, 697 __UNCONST(p->ps_d)); 698 *sp = *dp = '\0'; 699 return; 700 } 701 702 if (type != CTLTYPE_NODE && pnode->sysctl_size == 0) { 703 rc = prog_sysctl(&name[0], namelen, NULL, &sz, NULL, 0); 704 if (rc == -1) { 705 sysctlerror(1); 706 *sp = *dp = '\0'; 707 return; 708 } 709 if (sz == 0) { 710 if ((Aflag || req) && !Mflag) 711 printf("%s: node contains no data\n", gsname); 712 *sp = *dp = '\0'; 713 return; 714 } 715 } 716 else 717 sz = pnode->sysctl_size; 718 719 switch (type) { 720 case CTLTYPE_NODE: { 721 __learn_tree(name, namelen, pnode); 722 node = pnode->sysctl_child; 723 if (node == NULL) { 724 if (dflag) 725 /* do nothing */; 726 else if (p != NULL) 727 (*p->ps_p)(gsname, gdname, NULL, name, namelen, 728 pnode, type, __UNCONST(p->ps_d)); 729 else if ((Aflag || req) && !Mflag) 730 printf("%s: no children\n", gsname); 731 } 732 else { 733 if (dflag) 734 /* 735 * get all descriptions for next level 736 * in one chunk 737 */ 738 getdesc(name, namelen, pnode); 739 req = 0; 740 for (ni = 0; ni < pnode->sysctl_clen; ni++) { 741 name[namelen] = node[ni].sysctl_num; 742 if ((node[ni].sysctl_flags & CTLFLAG_HIDDEN) && 743 !(Aflag || req)) 744 continue; 745 print_tree(name, namelen + 1, &node[ni], 746 SYSCTL_TYPE(node[ni].sysctl_flags), 747 1, re, lastcompiled); 748 } 749 } 750 break; 751 } 752 case CTLTYPE_INT: { 753 int i; 754 rc = prog_sysctl(name, namelen, &i, &sz, NULL, 0); 755 if (rc == -1) { 756 sysctlerror(1); 757 break; 758 } 759 display_number(pnode, gsname, &i, sizeof(i), DISPLAY_VALUE); 760 break; 761 } 762 case CTLTYPE_BOOL: { 763 bool b; 764 rc = prog_sysctl(name, namelen, &b, &sz, NULL, 0); 765 if (rc == -1) { 766 sysctlerror(1); 767 break; 768 } 769 display_number(pnode, gsname, &b, sizeof(b), DISPLAY_VALUE); 770 break; 771 } 772 case CTLTYPE_STRING: { 773 unsigned char buf[1024], *tbuf; 774 tbuf = buf; 775 sz = sizeof(buf); 776 rc = prog_sysctl(&name[0], namelen, tbuf, &sz, NULL, 0); 777 if (rc == -1 && errno == ENOMEM) { 778 tbuf = malloc(sz); 779 if (tbuf == NULL) { 780 sysctlerror(1); 781 break; 782 } 783 rc = prog_sysctl(&name[0], namelen, tbuf, &sz, NULL, 0); 784 } 785 if (rc == -1) 786 sysctlerror(1); 787 else 788 display_string(pnode, gsname, tbuf, sz, DISPLAY_VALUE); 789 if (tbuf != buf) 790 free(tbuf); 791 break; 792 } 793 case CTLTYPE_QUAD: { 794 u_quad_t q; 795 sz = sizeof(q); 796 rc = prog_sysctl(&name[0], namelen, &q, &sz, NULL, 0); 797 if (rc == -1) { 798 sysctlerror(1); 799 break; 800 } 801 display_number(pnode, gsname, &q, sizeof(q), DISPLAY_VALUE); 802 break; 803 } 804 case CTLTYPE_STRUCT: { 805 /* 806 * we shouldn't actually get here, but if we 807 * do, would it be nice to have *something* to 808 * do other than completely ignore the 809 * request. 810 */ 811 unsigned char *d; 812 if ((d = malloc(sz)) == NULL) { 813 fprintf(warnfp, "%s: !malloc failed!\n", gsname); 814 break; 815 } 816 rc = prog_sysctl(&name[0], namelen, d, &sz, NULL, 0); 817 if (rc == -1) { 818 sysctlerror(1); 819 break; 820 } 821 display_struct(pnode, gsname, d, sz, DISPLAY_VALUE); 822 free(d); 823 break; 824 } 825 default: 826 /* should i print an error here? */ 827 break; 828 } 829 830 *sp = *dp = '\0'; 831 } 832 833 /* 834 * ******************************************************************** 835 * parse a request, possibly determining that it's a create or destroy 836 * request 837 * ******************************************************************** 838 */ 839 static void 840 parse(char *l, regex_t *re, size_t *lastcompiled) 841 { 842 struct sysctlnode *node; 843 const struct handlespec *w; 844 int name[CTL_MAXNAME], dodesc = 0; 845 u_int namelen, type; 846 char *key, *value, *dot; 847 size_t sz; 848 bool optional = false; 849 850 req = 1; 851 key = l; 852 853 if ((value = strchr(l, '=')) != NULL) { 854 if (value > l && value[-1] == '?') { 855 value[-1] = '\0'; 856 optional = true; 857 } 858 *value++ = '\0'; 859 } 860 861 if ((dot = strpbrk(key, "./")) == NULL) 862 sep[0] = '.'; 863 else 864 sep[0] = dot[0]; 865 sep[1] = '\0'; 866 867 while (key[0] == sep[0] && key[1] == sep[0]) { 868 if (value != NULL) 869 value[-1] = '='; 870 if (strncmp(key + 2, "create", 6) == 0 && 871 (key[8] == '=' || key[8] == sep[0])) 872 parse_create(key + 8 + (key[8] == '=' ? 1 : 0)); 873 else if (strncmp(key + 2, "destroy", 7) == 0 && 874 (key[9] == '=' || key[9] == sep[0])) 875 parse_destroy(key + 9 + (key[9] == '=' ? 1 : 0)); 876 else if (strncmp(key + 2, "describe", 8) == 0 && 877 (key[10] == '=' || key[10] == sep[0])) { 878 key += 10 + (key[10] == '='); 879 if ((value = strchr(key, '=')) != NULL) 880 parse_describe(key); 881 else { 882 if (!dflag) 883 dodesc = 1; 884 break; 885 } 886 } 887 else 888 sysctlperror("unable to parse '%s'\n", key); 889 return; 890 } 891 892 if (stale) { 893 purge_tree(&my_root); 894 stale = 0; 895 } 896 node = &my_root; 897 namelen = CTL_MAXNAME; 898 sz = sizeof(gsname); 899 900 if (prog_sysctlgetmibinfo(key, &name[0], &namelen, gsname, &sz, &node, 901 SYSCTL_VERSION) == -1) { 902 if (optional) 903 return; 904 sysctlparseerror(namelen, l); 905 EXIT(EXIT_FAILURE); 906 } 907 908 type = SYSCTL_TYPE(node->sysctl_flags); 909 910 if (value == NULL) { 911 if (dodesc) 912 dflag = 1; 913 print_tree(&name[0], namelen, node, type, 0, re, lastcompiled); 914 if (dodesc) 915 dflag = 0; 916 gsname[0] = '\0'; 917 return; 918 } 919 920 if (fn) 921 trim_whitespace(value, 1); 922 923 if (!wflag) { 924 sysctlperror("Must specify -w to set variables\n"); 925 exit(EXIT_FAILURE); 926 } 927 928 canonicalize(gsname, canonname); 929 if (type != CTLTYPE_NODE && (w = findhandler(canonname, re, 930 lastcompiled)) != NULL) { 931 if (w->ps_w == NULL) { 932 sysctlperror("Cannot write `%s': %s\n", gsname, 933 strerror(EOPNOTSUPP)); 934 exit(EXIT_FAILURE); 935 } 936 (*w->ps_w)(gsname, gdname, value, name, namelen, node, type, 937 __UNCONST(w->ps_d)); 938 gsname[0] = '\0'; 939 return; 940 } 941 942 switch (type) { 943 case CTLTYPE_INT: 944 case CTLTYPE_BOOL: 945 case CTLTYPE_QUAD: 946 write_number(&name[0], namelen, node, value, optional); 947 break; 948 case CTLTYPE_STRING: 949 write_string(&name[0], namelen, node, value, optional); 950 break; 951 case CTLTYPE_NODE: 952 case CTLTYPE_STRUCT: 953 /* 954 * XXX old behavior is to print. should we error instead? 955 */ 956 /* fprintf(warnfp, "you can't write to %s\n", gsname); */ 957 print_tree(&name[0], namelen, node, type, 0, re, lastcompiled); 958 break; 959 } 960 } 961 962 /* 963 964 //create=foo.bar.whatever..., 965 [type=(int|quad|string|struct|node),] 966 [size=###,] 967 [n=###,] 968 [flags=(iohxparw12),] 969 [addr=0x####,|symbol=...|value=...] 970 971 size is optional for some types. type must be set before anything 972 else. nodes can have [rwhp], but nothing else applies. if no 973 size or type is given, node is asserted. writeable is the default, 974 with [rw] being read-only and unconditionally writeable 975 respectively. if you specify addr, it is assumed to be the name of 976 a kernel symbol, if value, CTLFLAG_OWNDATA will be asserted for 977 strings, CTLFLAG_IMMEDIATE for ints and u_quad_ts. you cannot 978 specify both value and addr. 979 980 */ 981 982 static void 983 parse_create(char *l) 984 { 985 struct sysctlnode node; 986 size_t sz; 987 char *nname, *key, *value, *data, *addr, *c, *t; 988 int name[CTL_MAXNAME], i, rc, method, flags, rw; 989 u_int namelen, type; 990 u_quad_t uq; 991 quad_t q; 992 bool b; 993 994 if (!wflag) { 995 sysctlperror("Must specify -w to create nodes\n"); 996 exit(EXIT_FAILURE); 997 } 998 999 /* 1000 * these are the pieces that make up the description of a new 1001 * node 1002 */ 1003 memset(&node, 0, sizeof(node)); 1004 node.sysctl_num = CTL_CREATE; /* any number is fine */ 1005 flags = 0; 1006 rw = -1; 1007 type = 0; 1008 sz = 0; 1009 data = addr = NULL; 1010 memset(name, 0, sizeof(name)); 1011 namelen = 0; 1012 method = 0; 1013 1014 /* 1015 * misc stuff used when constructing 1016 */ 1017 i = 0; 1018 b = false; 1019 uq = 0; 1020 key = NULL; 1021 value = NULL; 1022 1023 /* 1024 * the name of the thing we're trying to create is first, so 1025 * pick it off. 1026 */ 1027 nname = l; 1028 if ((c = strchr(nname, ',')) != NULL) 1029 *c++ = '\0'; 1030 1031 while (c != NULL) { 1032 1033 /* 1034 * pull off the next "key=value" pair 1035 */ 1036 key = c; 1037 if ((t = strchr(key, '=')) != NULL) { 1038 *t++ = '\0'; 1039 value = t; 1040 } 1041 else 1042 value = NULL; 1043 1044 /* 1045 * if the "key" is "value", then that eats the rest of 1046 * the string, so we're done, otherwise bite it off at 1047 * the next comma. 1048 */ 1049 if (strcmp(key, "value") == 0) { 1050 c = NULL; 1051 data = value; 1052 break; 1053 } 1054 else if (value) { 1055 if ((c = strchr(value, ',')) != NULL) 1056 *c++ = '\0'; 1057 } 1058 1059 /* 1060 * note that we (mostly) let the invoker of prog_sysctl(8) 1061 * play rampant here and depend on the kernel to tell 1062 * them that they were wrong. well...within reason. 1063 * we later check the various parameters against each 1064 * other to make sure it makes some sort of sense. 1065 */ 1066 if (strcmp(key, "addr") == 0) { 1067 /* 1068 * we can't check these two. only the kernel 1069 * can tell us when it fails to find the name 1070 * (or if the address is invalid). 1071 */ 1072 if (method != 0) { 1073 sysctlperror( 1074 "%s: already have %s for new node\n", 1075 nname, 1076 method == CTL_CREATE ? "addr" : "symbol"); 1077 EXIT(EXIT_FAILURE); 1078 } 1079 if (value == NULL) { 1080 sysctlperror("%s: missing value\n", nname); 1081 EXIT(EXIT_FAILURE); 1082 } 1083 errno = 0; 1084 addr = (void*)strtoul(value, &t, 0); 1085 if (t == value || *t != '\0' || errno != 0) { 1086 sysctlperror( 1087 "%s: '%s' is not a valid address\n", 1088 nname, value); 1089 EXIT(EXIT_FAILURE); 1090 } 1091 method = CTL_CREATE; 1092 } 1093 else if (strcmp(key, "symbol") == 0) { 1094 if (method != 0) { 1095 sysctlperror( 1096 "%s: already have %s for new node\n", 1097 nname, 1098 method == CTL_CREATE ? "addr" : "symbol"); 1099 EXIT(EXIT_FAILURE); 1100 } 1101 addr = value; 1102 method = CTL_CREATESYM; 1103 } 1104 else if (strcmp(key, "type") == 0) { 1105 if (value == NULL) { 1106 sysctlperror("%s: missing value\n", nname); 1107 EXIT(EXIT_FAILURE); 1108 } 1109 if (strcmp(value, "node") == 0) 1110 type = CTLTYPE_NODE; 1111 else if (strcmp(value, "int") == 0) { 1112 sz = sizeof(int); 1113 type = CTLTYPE_INT; 1114 } 1115 else if (strcmp(value, "bool") == 0) { 1116 sz = sizeof(bool); 1117 type = CTLTYPE_BOOL; 1118 } 1119 else if (strcmp(value, "string") == 0) 1120 type = CTLTYPE_STRING; 1121 else if (strcmp(value, "quad") == 0) { 1122 sz = sizeof(u_quad_t); 1123 type = CTLTYPE_QUAD; 1124 } 1125 else if (strcmp(value, "struct") == 0) 1126 type = CTLTYPE_STRUCT; 1127 else { 1128 sysctlperror( 1129 "%s: '%s' is not a valid type\n", 1130 nname, value); 1131 EXIT(EXIT_FAILURE); 1132 } 1133 } 1134 else if (strcmp(key, "size") == 0) { 1135 if (value == NULL) { 1136 sysctlperror("%s: missing value\n", nname); 1137 EXIT(EXIT_FAILURE); 1138 } 1139 errno = 0; 1140 /* 1141 * yes, i know size_t is not an unsigned long, 1142 * but we can all agree that it ought to be, 1143 * right? 1144 */ 1145 sz = strtoul(value, &t, 0); 1146 if (t == value || *t != '\0' || errno != 0) { 1147 sysctlperror( 1148 "%s: '%s' is not a valid size\n", 1149 nname, value); 1150 EXIT(EXIT_FAILURE); 1151 } 1152 } 1153 else if (strcmp(key, "n") == 0) { 1154 if (value == NULL) { 1155 sysctlperror("%s: missing value\n", nname); 1156 EXIT(EXIT_FAILURE); 1157 } 1158 errno = 0; 1159 q = strtoll(value, &t, 0); 1160 if (t == value || *t != '\0' || errno != 0 || 1161 q < INT_MIN || q > UINT_MAX) { 1162 sysctlperror( 1163 "%s: '%s' is not a valid mib number\n", 1164 nname, value); 1165 EXIT(EXIT_FAILURE); 1166 } 1167 node.sysctl_num = (int)q; 1168 } 1169 else if (strcmp(key, "flags") == 0) { 1170 if (value == NULL) { 1171 sysctlperror("%s: missing value\n", nname); 1172 EXIT(EXIT_FAILURE); 1173 } 1174 t = value; 1175 while (*t != '\0') { 1176 switch (*t) { 1177 case 'a': 1178 flags |= CTLFLAG_ANYWRITE; 1179 break; 1180 case 'h': 1181 flags |= CTLFLAG_HIDDEN; 1182 break; 1183 case 'i': 1184 flags |= CTLFLAG_IMMEDIATE; 1185 break; 1186 case 'o': 1187 flags |= CTLFLAG_OWNDATA; 1188 break; 1189 case 'p': 1190 flags |= CTLFLAG_PRIVATE; 1191 break; 1192 case 'u': 1193 flags |= CTLFLAG_UNSIGNED; 1194 break; 1195 case 'x': 1196 flags |= CTLFLAG_HEX; 1197 break; 1198 1199 case 'r': 1200 rw = CTLFLAG_READONLY; 1201 break; 1202 case 'w': 1203 rw = CTLFLAG_READWRITE; 1204 break; 1205 default: 1206 sysctlperror( 1207 "%s: '%c' is not a valid flag\n", 1208 nname, *t); 1209 EXIT(EXIT_FAILURE); 1210 } 1211 t++; 1212 } 1213 } 1214 else { 1215 sysctlperror("%s: unrecognized keyword '%s'\n", 1216 nname, key); 1217 EXIT(EXIT_FAILURE); 1218 } 1219 } 1220 1221 /* 1222 * now that we've finished parsing the given string, fill in 1223 * anything they didn't specify 1224 */ 1225 if (type == 0) 1226 type = CTLTYPE_NODE; 1227 1228 /* 1229 * the "data" can be interpreted various ways depending on the 1230 * type of node we're creating, as can the size 1231 */ 1232 if (data != NULL) { 1233 if (addr != NULL) { 1234 sysctlperror( 1235 "%s: cannot specify both value and " 1236 "address\n", nname); 1237 EXIT(EXIT_FAILURE); 1238 } 1239 1240 switch (type) { 1241 case CTLTYPE_INT: 1242 errno = 0; 1243 q = strtoll(data, &t, 0); 1244 if (t == data || *t != '\0' || errno != 0 || 1245 q < INT_MIN || q > UINT_MAX) { 1246 sysctlperror( 1247 "%s: '%s' is not a valid integer\n", 1248 nname, value); 1249 EXIT(EXIT_FAILURE); 1250 } 1251 i = (int)q; 1252 if (!(flags & CTLFLAG_OWNDATA)) { 1253 flags |= CTLFLAG_IMMEDIATE; 1254 node.sysctl_idata = i; 1255 } 1256 else 1257 node.sysctl_data = &i; 1258 if (sz == 0) 1259 sz = sizeof(int); 1260 break; 1261 case CTLTYPE_BOOL: 1262 errno = 0; 1263 q = strtoll(data, &t, 0); 1264 if (t == data || *t != '\0' || errno != 0 || 1265 (q != 0 && q != 1)) { 1266 sysctlperror( 1267 "%s: '%s' is not a valid bool\n", 1268 nname, value); 1269 EXIT(EXIT_FAILURE); 1270 } 1271 b = q == 1; 1272 if (!(flags & CTLFLAG_OWNDATA)) { 1273 flags |= CTLFLAG_IMMEDIATE; 1274 node.sysctl_idata = b; 1275 } 1276 else 1277 node.sysctl_data = &b; 1278 if (sz == 0) 1279 sz = sizeof(bool); 1280 break; 1281 case CTLTYPE_STRING: 1282 flags |= CTLFLAG_OWNDATA; 1283 node.sysctl_data = data; 1284 if (sz == 0) 1285 sz = strlen(data) + 1; 1286 else if (sz < strlen(data) + 1) { 1287 sysctlperror("%s: ignoring size=%zu for " 1288 "string node, too small for given " 1289 "value\n", nname, sz); 1290 sz = strlen(data) + 1; 1291 } 1292 break; 1293 case CTLTYPE_QUAD: 1294 errno = 0; 1295 uq = strtouq(data, &t, 0); 1296 if (t == data || *t != '\0' || errno != 0) { 1297 sysctlperror( 1298 "%s: '%s' is not a valid quad\n", 1299 nname, value); 1300 EXIT(EXIT_FAILURE); 1301 } 1302 if (!(flags & CTLFLAG_OWNDATA)) { 1303 flags |= CTLFLAG_IMMEDIATE; 1304 node.sysctl_qdata = uq; 1305 } 1306 else 1307 node.sysctl_data = &uq; 1308 if (sz == 0) 1309 sz = sizeof(u_quad_t); 1310 break; 1311 case CTLTYPE_STRUCT: 1312 sysctlperror("%s: struct not initializable\n", 1313 nname); 1314 EXIT(EXIT_FAILURE); 1315 } 1316 1317 /* 1318 * these methods have all provided local starting 1319 * values that the kernel must copy in 1320 */ 1321 } 1322 1323 /* 1324 * hmm...no data, but we have an address of data. that's 1325 * fine. 1326 */ 1327 else if (addr != 0) 1328 node.sysctl_data = (void*)addr; 1329 1330 /* 1331 * no data and no address? well...okay. we might be able to 1332 * manage that. 1333 */ 1334 else if (type != CTLTYPE_NODE) { 1335 if (sz == 0) { 1336 sysctlperror( 1337 "%s: need a size or a starting value\n", 1338 nname); 1339 EXIT(EXIT_FAILURE); 1340 } 1341 if (!(flags & CTLFLAG_IMMEDIATE)) 1342 flags |= CTLFLAG_OWNDATA; 1343 } 1344 1345 /* 1346 * now we do a few sanity checks on the description we've 1347 * assembled 1348 */ 1349 if ((flags & CTLFLAG_IMMEDIATE) && 1350 (type == CTLTYPE_STRING || type == CTLTYPE_STRUCT)) { 1351 sysctlperror("%s: cannot make an immediate %s\n", 1352 nname, 1353 (type == CTLTYPE_STRING) ? "string" : "struct"); 1354 EXIT(EXIT_FAILURE); 1355 } 1356 if (type == CTLTYPE_NODE && node.sysctl_data != NULL) { 1357 sysctlperror("%s: nodes do not have data\n", nname); 1358 EXIT(EXIT_FAILURE); 1359 } 1360 1361 /* 1362 * some types must have a particular size 1363 */ 1364 if (sz != 0) { 1365 if ((type == CTLTYPE_INT && sz != sizeof(int)) || 1366 (type == CTLTYPE_BOOL && sz != sizeof(bool)) || 1367 (type == CTLTYPE_QUAD && sz != sizeof(u_quad_t)) || 1368 (type == CTLTYPE_NODE && sz != 0)) { 1369 sysctlperror("%s: wrong size for type\n", nname); 1370 EXIT(EXIT_FAILURE); 1371 } 1372 } 1373 else if (type == CTLTYPE_STRUCT) { 1374 sysctlperror("%s: struct must have size\n", nname); 1375 EXIT(EXIT_FAILURE); 1376 } 1377 1378 /* 1379 * now...if no one said anything yet, we default nodes or 1380 * any type that owns data being writeable, and everything 1381 * else being readonly. 1382 */ 1383 if (rw == -1) { 1384 if (type == CTLTYPE_NODE || 1385 (flags & (CTLFLAG_OWNDATA|CTLFLAG_IMMEDIATE))) 1386 rw = CTLFLAG_READWRITE; 1387 else 1388 rw = CTLFLAG_READONLY; 1389 } 1390 1391 /* 1392 * if a kernel address was specified, that can't be made 1393 * writeable by us. 1394 if (rw != CTLFLAG_READONLY && addr) { 1395 sysctlperror("%s: kernel data can only be readable\n", nname); 1396 EXIT(EXIT_FAILURE); 1397 } 1398 */ 1399 1400 /* 1401 * what separator were they using in the full name of the new 1402 * node? 1403 */ 1404 if ((t = strpbrk(nname, "./")) == NULL) 1405 sep[0] = '.'; 1406 else 1407 sep[0] = t[0]; 1408 sep[1] = '\0'; 1409 1410 /* 1411 * put it all together, now. t'ain't much, is it? 1412 */ 1413 node.sysctl_flags = SYSCTL_VERSION|flags|rw|type; 1414 node.sysctl_size = sz; 1415 t = strrchr(nname, sep[0]); 1416 if (t != NULL) 1417 strlcpy(node.sysctl_name, t + 1, sizeof(node.sysctl_name)); 1418 else 1419 strlcpy(node.sysctl_name, nname, sizeof(node.sysctl_name)); 1420 if (t == nname) 1421 t = NULL; 1422 1423 /* 1424 * if this is a new top-level node, then we don't need to find 1425 * the mib for its parent 1426 */ 1427 if (t == NULL) { 1428 namelen = 0; 1429 gsname[0] = '\0'; 1430 } 1431 1432 /* 1433 * on the other hand, if it's not a top-level node... 1434 */ 1435 else { 1436 namelen = sizeof(name) / sizeof(name[0]); 1437 sz = sizeof(gsname); 1438 *t = '\0'; 1439 rc = prog_sysctlgetmibinfo(nname, &name[0], &namelen, 1440 gsname, &sz, NULL, SYSCTL_VERSION); 1441 *t = sep[0]; 1442 if (rc == -1) { 1443 sysctlparseerror(namelen, nname); 1444 EXIT(EXIT_FAILURE); 1445 } 1446 } 1447 1448 /* 1449 * yes, a new node is being created 1450 */ 1451 if (method != 0) 1452 name[namelen++] = method; 1453 else 1454 name[namelen++] = CTL_CREATE; 1455 1456 sz = sizeof(node); 1457 rc = prog_sysctl(&name[0], namelen, &node, &sz, &node, sizeof(node)); 1458 1459 if (rc == -1) { 1460 sysctlperror("%s: CTL_CREATE failed: %s\n", 1461 nname, strerror(errno)); 1462 EXIT(EXIT_FAILURE); 1463 } 1464 else { 1465 if (!qflag && !nflag) 1466 printf("%s(%s): (created)\n", nname, st(type)); 1467 stale = 1; 1468 } 1469 } 1470 1471 static void 1472 parse_destroy(char *l) 1473 { 1474 struct sysctlnode node; 1475 size_t sz; 1476 int name[CTL_MAXNAME], rc; 1477 u_int namelen; 1478 1479 if (!wflag) { 1480 sysctlperror("Must specify -w to destroy nodes\n"); 1481 exit(EXIT_FAILURE); 1482 } 1483 1484 memset(name, 0, sizeof(name)); 1485 namelen = sizeof(name) / sizeof(name[0]); 1486 sz = sizeof(gsname); 1487 rc = prog_sysctlgetmibinfo(l, &name[0], &namelen, gsname, &sz, NULL, 1488 SYSCTL_VERSION); 1489 if (rc == -1) { 1490 sysctlparseerror(namelen, l); 1491 EXIT(EXIT_FAILURE); 1492 } 1493 1494 memset(&node, 0, sizeof(node)); 1495 node.sysctl_flags = SYSCTL_VERSION; 1496 node.sysctl_num = name[namelen - 1]; 1497 name[namelen - 1] = CTL_DESTROY; 1498 1499 sz = sizeof(node); 1500 rc = prog_sysctl(&name[0], namelen, &node, &sz, &node, sizeof(node)); 1501 1502 if (rc == -1) { 1503 sysctlperror("%s: CTL_DESTROY failed: %s\n", 1504 l, strerror(errno)); 1505 EXIT(EXIT_FAILURE); 1506 } 1507 else { 1508 if (!qflag && !nflag) 1509 printf("%s(%s): (destroyed)\n", gsname, 1510 st(SYSCTL_TYPE(node.sysctl_flags))); 1511 stale = 1; 1512 } 1513 } 1514 1515 static void 1516 parse_describe(char *l) 1517 { 1518 struct sysctlnode newdesc; 1519 char buf[1024], *value; 1520 struct sysctldesc *d = (void*)&buf[0]; 1521 int name[CTL_MAXNAME], rc; 1522 u_int namelen; 1523 size_t sz; 1524 1525 if (!wflag) { 1526 sysctlperror("Must specify -w to set descriptions\n"); 1527 exit(EXIT_FAILURE); 1528 } 1529 1530 value = strchr(l, '='); 1531 *value++ = '\0'; 1532 1533 memset(name, 0, sizeof(name)); 1534 namelen = sizeof(name) / sizeof(name[0]); 1535 sz = sizeof(gsname); 1536 rc = prog_sysctlgetmibinfo(l, &name[0], &namelen, gsname, &sz, NULL, 1537 SYSCTL_VERSION); 1538 if (rc == -1) { 1539 sysctlparseerror(namelen, l); 1540 EXIT(EXIT_FAILURE); 1541 } 1542 1543 sz = sizeof(buf); 1544 memset(&newdesc, 0, sizeof(newdesc)); 1545 newdesc.sysctl_flags = SYSCTL_VERSION|CTLFLAG_OWNDESC; 1546 newdesc.sysctl_num = name[namelen - 1]; 1547 newdesc.sysctl_desc = value; 1548 name[namelen - 1] = CTL_DESCRIBE; 1549 rc = prog_sysctl(name, namelen, d, &sz, &newdesc, sizeof(newdesc)); 1550 if (rc == -1) 1551 sysctlperror("%s: CTL_DESCRIBE failed: %s\n", 1552 gsname, strerror(errno)); 1553 else if (d->descr_len == 1) 1554 sysctlperror("%s: description not set\n", gsname); 1555 else if (!qflag && !nflag) 1556 printf("%s: %s\n", gsname, d->descr_str); 1557 } 1558 1559 /* 1560 * ******************************************************************** 1561 * when things go wrong... 1562 * ******************************************************************** 1563 */ 1564 static void 1565 usage(void) 1566 { 1567 const char *progname = getprogname(); 1568 1569 (void)fprintf(stderr, 1570 "usage:\t%s %s\n" 1571 "\t%s %s\n" 1572 "\t%s %s\n" 1573 "\t%s %s\n" 1574 "\t%s %s\n" 1575 "\t%s %s\n", 1576 progname, "[-dneq] [-x[x]|-r] variable ...", 1577 progname, "[-ne] [-q] -w variable=value ...", 1578 progname, "[-dne] -a", 1579 progname, "[-dne] -A", 1580 progname, "[-ne] -M", 1581 progname, "[-dne] [-q] -f file"); 1582 exit(EXIT_FAILURE); 1583 } 1584 1585 static void 1586 getdesc1(int *name, u_int namelen, struct sysctlnode *pnode) 1587 { 1588 struct sysctlnode node; 1589 char buf[1024], *desc; 1590 struct sysctldesc *d = (void*)buf; 1591 size_t sz = sizeof(buf); 1592 int rc; 1593 1594 memset(&node, 0, sizeof(node)); 1595 node.sysctl_flags = SYSCTL_VERSION; 1596 node.sysctl_num = name[namelen - 1]; 1597 name[namelen - 1] = CTL_DESCRIBE; 1598 rc = prog_sysctl(name, namelen, d, &sz, &node, sizeof(node)); 1599 1600 if (rc == -1 || 1601 d->descr_len == 1 || 1602 d->descr_num != pnode->sysctl_num || 1603 d->descr_ver != pnode->sysctl_ver) 1604 desc = (char *)-1; 1605 else 1606 desc = malloc(d->descr_len); 1607 1608 if (desc == NULL) 1609 desc = (char *)-1; 1610 if (desc != (char *)-1) 1611 memcpy(desc, &d->descr_str[0], d->descr_len); 1612 name[namelen - 1] = node.sysctl_num; 1613 if (pnode->sysctl_desc != NULL && 1614 pnode->sysctl_desc != (const char *)-1) 1615 free(__UNCONST(pnode->sysctl_desc)); 1616 pnode->sysctl_desc = desc; 1617 } 1618 1619 static void 1620 getdesc(int *name, u_int namelen, struct sysctlnode *pnode) 1621 { 1622 struct sysctlnode *node = pnode->sysctl_child; 1623 struct sysctldesc *d, *p, *plim; 1624 char *desc; 1625 size_t i, sz, child_cnt; 1626 int rc; 1627 1628 sz = 128 * pnode->sysctl_clen; 1629 name[namelen] = CTL_DESCRIBE; 1630 1631 /* 1632 * attempt *twice* to get the description chunk. if two tries 1633 * doesn't work, give up. 1634 */ 1635 i = 0; 1636 do { 1637 d = malloc(sz); 1638 if (d == NULL) 1639 return; 1640 rc = prog_sysctl(name, namelen + 1, d, &sz, NULL, 0); 1641 if (rc == -1) { 1642 free(d); 1643 d = NULL; 1644 if (i == 0 && errno == ENOMEM) 1645 i = 1; 1646 else 1647 return; 1648 } 1649 } while (d == NULL); 1650 1651 /* 1652 * hokey nested loop here, giving O(n**2) behavior, but should 1653 * suffice for now 1654 */ 1655 plim = /*LINTED ptr cast*/(struct sysctldesc *)((char*)d + sz); 1656 child_cnt = (pnode->sysctl_flags & CTLTYPE_NODE) ? pnode->sysctl_clen 1657 : 0; 1658 for (i = 0; i < child_cnt; i++) { 1659 node = &pnode->sysctl_child[i]; 1660 for (p = d; p < plim; p = NEXT_DESCR(p)) 1661 if (node->sysctl_num == p->descr_num) 1662 break; 1663 if (p < plim && node->sysctl_ver == p->descr_ver) { 1664 /* 1665 * match found, attempt to attach description 1666 */ 1667 if (p->descr_len == 1) 1668 desc = NULL; 1669 else 1670 desc = malloc(p->descr_len); 1671 if (desc == NULL) 1672 desc = (char *)-1; 1673 else 1674 memcpy(desc, &p->descr_str[0], p->descr_len); 1675 node->sysctl_desc = desc; 1676 } 1677 } 1678 1679 free(d); 1680 } 1681 1682 static void 1683 trim_whitespace(char *s, int dir) 1684 { 1685 char *i, *o; 1686 1687 i = o = s; 1688 if (dir & 1) 1689 while (isspace((unsigned char)*i)) 1690 i++; 1691 while ((*o++ = *i++) != '\0'); 1692 o -= 2; /* already past nul, skip back to before it */ 1693 if (dir & 2) 1694 while (o > s && isspace((unsigned char)*o)) 1695 *o-- = '\0'; 1696 } 1697 1698 void 1699 sysctlerror(int soft) 1700 { 1701 if (soft) { 1702 switch (errno) { 1703 case ENOENT: 1704 case ENOPROTOOPT: 1705 case ENOTDIR: 1706 case EINVAL: 1707 case EOPNOTSUPP: 1708 case EPROTONOSUPPORT: 1709 if (Aflag || req) 1710 sysctlperror("%s: the value is not available " 1711 "(%s)\n", gsname, strerror(errno)); 1712 return; 1713 } 1714 } 1715 1716 if (Aflag || req) 1717 sysctlperror("%s: %s\n", gsname, strerror(errno)); 1718 if (!soft) 1719 EXIT(EXIT_FAILURE); 1720 } 1721 1722 void 1723 sysctlparseerror(u_int namelen, const char *pname) 1724 { 1725 1726 if (qflag) { 1727 errs++; 1728 return; 1729 } 1730 sysctlperror("%s level name '%s' in '%s' is invalid\n", 1731 lname[namelen], gsname, pname); 1732 } 1733 1734 static void 1735 sysctlperror(const char *fmt, ...) 1736 { 1737 va_list ap; 1738 1739 (void)fprintf(warnfp, "%s: ", getprogname()); 1740 if (fn) 1741 (void)fprintf(warnfp, "%s#%zu: ", fn, nr); 1742 va_start(ap, fmt); 1743 (void)vfprintf(warnfp, fmt, ap); 1744 va_end(ap); 1745 errs++; 1746 } 1747 1748 1749 /* 1750 * ******************************************************************** 1751 * how to write to a "simple" node 1752 * ******************************************************************** 1753 */ 1754 static void 1755 write_number(int *name, u_int namelen, struct sysctlnode *node, char *value, 1756 bool optional) 1757 { 1758 u_int ii, io; 1759 u_quad_t qi, qo; 1760 size_t si, so; 1761 bool bi, bo; 1762 int rc; 1763 void *i, *o; 1764 char *t; 1765 1766 if (fn) 1767 trim_whitespace(value, 3); 1768 1769 si = so = 0; 1770 i = o = NULL; 1771 bi = bo = false; 1772 errno = 0; 1773 qi = strtouq(value, &t, 0); 1774 if (qi == UQUAD_MAX && errno == ERANGE) { 1775 sysctlperror("%s: %s\n", value, strerror(errno)); 1776 EXIT(EXIT_FAILURE); 1777 } 1778 if (t == value || *t != '\0') { 1779 sysctlperror("%s: not a number\n", value); 1780 EXIT(EXIT_FAILURE); 1781 } 1782 1783 switch (SYSCTL_TYPE(node->sysctl_flags)) { 1784 case CTLTYPE_INT: 1785 ii = (u_int)qi; 1786 io = (u_int)(qi >> 32); 1787 if (io != (u_int)-1 && io != 0) { 1788 sysctlperror("%s: %s\n", value, strerror(ERANGE)); 1789 EXIT(EXIT_FAILURE); 1790 } 1791 o = &io; 1792 so = sizeof(io); 1793 i = ⅈ 1794 si = sizeof(ii); 1795 break; 1796 case CTLTYPE_BOOL: 1797 bi = (bool)qi; 1798 o = &bo; 1799 so = sizeof(bo); 1800 i = &bi; 1801 si = sizeof(bi); 1802 break; 1803 case CTLTYPE_QUAD: 1804 o = &qo; 1805 so = sizeof(qo); 1806 i = &qi; 1807 si = sizeof(qi); 1808 break; 1809 } 1810 1811 rc = prog_sysctl(name, namelen, o, &so, i, si); 1812 if (rc == -1) { 1813 if (!optional || errno != EPERM) { 1814 sysctlerror(0); 1815 } 1816 return; 1817 } 1818 1819 switch (SYSCTL_TYPE(node->sysctl_flags)) { 1820 case CTLTYPE_INT: 1821 display_number(node, gsname, &io, sizeof(io), DISPLAY_OLD); 1822 display_number(node, gsname, &ii, sizeof(ii), DISPLAY_NEW); 1823 break; 1824 case CTLTYPE_BOOL: 1825 display_number(node, gsname, &bo, sizeof(bo), DISPLAY_OLD); 1826 display_number(node, gsname, &bi, sizeof(bi), DISPLAY_NEW); 1827 break; 1828 case CTLTYPE_QUAD: 1829 display_number(node, gsname, &qo, sizeof(qo), DISPLAY_OLD); 1830 display_number(node, gsname, &qi, sizeof(qi), DISPLAY_NEW); 1831 break; 1832 } 1833 } 1834 1835 static void 1836 write_string(int *name, u_int namelen, struct sysctlnode *node, char *value, 1837 bool optional) 1838 { 1839 char *i, *o; 1840 size_t si, so; 1841 int rc; 1842 1843 i = value; 1844 si = strlen(i) + 1; 1845 so = node->sysctl_size; 1846 if (si > so && so != 0) { 1847 sysctlperror("%s: string too long\n", value); 1848 EXIT(EXIT_FAILURE); 1849 } 1850 o = malloc(so); 1851 if (o == NULL) { 1852 sysctlperror("%s: !malloc failed!\n", gsname); 1853 exit(EXIT_FAILURE); 1854 } 1855 1856 rc = prog_sysctl(name, namelen, o, &so, i, si); 1857 if (rc == -1) { 1858 if (!optional || errno != EPERM) { 1859 sysctlerror(0); 1860 } 1861 free(o); 1862 return; 1863 } 1864 1865 display_string(node, gsname, o, so, DISPLAY_OLD); 1866 display_string(node, gsname, i, si, DISPLAY_NEW); 1867 free(o); 1868 } 1869 1870 /* 1871 * ******************************************************************** 1872 * simple ways to print stuff consistently 1873 * ******************************************************************** 1874 */ 1875 static void 1876 display_number(const struct sysctlnode *node, const char *name, 1877 const void *data, size_t sz, int n) 1878 { 1879 u_quad_t q; 1880 bool b; 1881 int i; 1882 1883 if (qflag) 1884 return; 1885 if ((nflag || rflag) && (n == DISPLAY_OLD)) 1886 return; 1887 1888 if (rflag && n != DISPLAY_OLD) { 1889 fwrite(data, sz, 1, stdout); 1890 return; 1891 } 1892 1893 if (!nflag) { 1894 if (n == DISPLAY_VALUE) 1895 printf("%s%s", name, eq); 1896 else if (n == DISPLAY_OLD) 1897 printf("%s: ", name); 1898 } 1899 1900 if (xflag > 1) { 1901 if (n != DISPLAY_NEW) 1902 printf("\n"); 1903 hex_dump(data, sz); 1904 return; 1905 } 1906 1907 switch (SYSCTL_TYPE(node->sysctl_flags)) { 1908 case CTLTYPE_INT: 1909 memcpy(&i, data, sz); 1910 if (xflag) 1911 printf("0x%0*x", (int)sz * 2, i); 1912 else if (node->sysctl_flags & CTLFLAG_HEX) 1913 printf("%#x", i); 1914 else if (node->sysctl_flags & CTLFLAG_UNSIGNED) 1915 printf("%u", i); 1916 else 1917 printf("%d", i); 1918 break; 1919 case CTLTYPE_BOOL: 1920 memcpy(&b, data, sz); 1921 if (xflag) 1922 printf("0x%0*x", (int)sz * 2, b); 1923 else if (node->sysctl_flags & CTLFLAG_HEX) 1924 printf("%#x", b); 1925 else 1926 printf("%d", b); 1927 break; 1928 case CTLTYPE_QUAD: 1929 memcpy(&q, data, sz); 1930 if (xflag) 1931 printf("0x%0*" PRIx64, (int)sz * 2, q); 1932 else if (node->sysctl_flags & CTLFLAG_HEX) 1933 printf("%#" PRIx64, q); 1934 else if (node->sysctl_flags & CTLFLAG_UNSIGNED) 1935 printf("%" PRIu64, q); 1936 else 1937 printf("%" PRIu64, q); 1938 break; 1939 } 1940 1941 if (n == DISPLAY_OLD) 1942 printf(" -> "); 1943 else 1944 printf("\n"); 1945 } 1946 1947 static void 1948 display_string(const struct sysctlnode *node, const char *name, 1949 const void *data, size_t sz, int n) 1950 { 1951 const unsigned char *buf = data; 1952 int ni; 1953 1954 if (qflag) 1955 return; 1956 if ((nflag || rflag) && (n == DISPLAY_OLD)) 1957 return; 1958 1959 if (rflag && n != DISPLAY_OLD) { 1960 fwrite(data, sz, 1, stdout); 1961 return; 1962 } 1963 1964 if (!nflag) { 1965 if (n == DISPLAY_VALUE) 1966 printf("%s%s", name, eq); 1967 else if (n == DISPLAY_OLD) 1968 printf("%s: ", name); 1969 } 1970 1971 if (xflag > 1) { 1972 if (n != DISPLAY_NEW) 1973 printf("\n"); 1974 hex_dump(data, sz); 1975 return; 1976 } 1977 1978 if (xflag || node->sysctl_flags & CTLFLAG_HEX) { 1979 for (ni = 0; ni < (int)sz; ni++) { 1980 if (xflag) 1981 printf("%02x", buf[ni]); 1982 if (buf[ni] == '\0') 1983 break; 1984 if (!xflag) 1985 printf("\\x%2.2x", buf[ni]); 1986 } 1987 } 1988 else 1989 printf("%.*s", (int)sz, buf); 1990 1991 if (n == DISPLAY_OLD) 1992 printf(" -> "); 1993 else 1994 printf("\n"); 1995 } 1996 1997 /*ARGSUSED*/ 1998 static void 1999 display_struct(const struct sysctlnode *node, const char *name, 2000 const void *data, size_t sz, int n) 2001 { 2002 const unsigned char *buf = data; 2003 int ni; 2004 size_t more; 2005 2006 if (qflag) 2007 return; 2008 if (!(xflag || rflag)) { 2009 if (Aflag || req) 2010 sysctlperror( 2011 "%s: this type is unknown to this program\n", 2012 gsname); 2013 return; 2014 } 2015 if ((nflag || rflag) && (n == DISPLAY_OLD)) 2016 return; 2017 2018 if (rflag && n != DISPLAY_OLD) { 2019 fwrite(data, sz, 1, stdout); 2020 return; 2021 } 2022 2023 if (!nflag) { 2024 if (n == DISPLAY_VALUE) 2025 printf("%s%s", name, eq); 2026 else if (n == DISPLAY_OLD) 2027 printf("%s: ", name); 2028 } 2029 2030 if (xflag > 1) { 2031 if (n != DISPLAY_NEW) 2032 printf("\n"); 2033 hex_dump(data, sz); 2034 return; 2035 } 2036 2037 if (sz > 16) { 2038 more = sz - 16; 2039 sz = 16; 2040 } 2041 else 2042 more = 0; 2043 for (ni = 0; ni < (int)sz; ni++) 2044 printf("%02x", buf[ni]); 2045 if (more) 2046 printf("...(%zu more bytes)", more); 2047 printf("\n"); 2048 } 2049 2050 static void 2051 hex_dump(const unsigned char *buf, size_t len) 2052 { 2053 unsigned int i; 2054 int j; 2055 char line[80], tmp[12]; 2056 2057 memset(line, ' ', sizeof(line)); 2058 for (i = 0, j = 15; i < len; i++) { 2059 j = i % 16; 2060 /* reset line */ 2061 if (j == 0) { 2062 line[58] = '|'; 2063 line[77] = '|'; 2064 line[78] = 0; 2065 snprintf(tmp, sizeof(tmp), "%07x", i); 2066 memcpy(&line[0], tmp, 7); 2067 } 2068 /* copy out hex version of byte */ 2069 snprintf(tmp, sizeof(tmp), "%02x", buf[i]); 2070 memcpy(&line[9 + j * 3], tmp, 2); 2071 /* copy out plain version of byte */ 2072 line[60 + j] = (isprint(buf[i])) ? buf[i] : '.'; 2073 /* print a full line and erase it */ 2074 if (j == 15) { 2075 printf("%s\n", line); 2076 memset(line, ' ', sizeof(line)); 2077 } 2078 } 2079 if (line[0] != ' ') 2080 printf("%s\n", line); 2081 printf("%07zu bytes\n", len); 2082 } 2083 2084 /* 2085 * ******************************************************************** 2086 * functions that handle particular nodes 2087 * ******************************************************************** 2088 */ 2089 /*ARGSUSED*/ 2090 static void 2091 printother(HANDLER_ARGS) 2092 { 2093 int rc; 2094 void *p; 2095 size_t sz1, sz2; 2096 2097 if (!(Aflag || req) || Mflag) 2098 return; 2099 2100 /* 2101 * okay...you asked for it, so let's give it a go 2102 */ 2103 while (type != CTLTYPE_NODE && (xflag || rflag)) { 2104 rc = prog_sysctl(name, namelen, NULL, &sz1, NULL, 0); 2105 if (rc == -1 || sz1 == 0) 2106 break; 2107 p = malloc(sz1); 2108 if (p == NULL) 2109 break; 2110 sz2 = sz1; 2111 rc = prog_sysctl(name, namelen, p, &sz2, NULL, 0); 2112 if (rc == -1 || sz1 != sz2) { 2113 free(p); 2114 break; 2115 } 2116 display_struct(pnode, gsname, p, sz1, DISPLAY_VALUE); 2117 free(p); 2118 return; 2119 } 2120 2121 /* 2122 * that didn't work...do we have a specific message for this 2123 * thing? 2124 */ 2125 if (v != NULL) { 2126 sysctlperror("%s: use '%s' to view this information\n", 2127 gsname, (const char *)v); 2128 return; 2129 } 2130 2131 /* 2132 * hmm...i wonder if we have any generic hints? 2133 */ 2134 switch (name[0]) { 2135 case CTL_NET: 2136 sysctlperror("%s: use 'netstat' to view this information\n", 2137 sname); 2138 break; 2139 case CTL_DEBUG: 2140 sysctlperror("%s: missing 'options DEBUG' from kernel?\n", 2141 sname); 2142 break; 2143 case CTL_DDB: 2144 sysctlperror("%s: missing 'options DDB' from kernel?\n", 2145 sname); 2146 break; 2147 case CTL_VENDOR: 2148 sysctlperror("%s: no vendor extensions installed\n", 2149 sname); 2150 break; 2151 } 2152 } 2153 2154 /*ARGSUSED*/ 2155 static void 2156 kern_clockrate(HANDLER_ARGS) 2157 { 2158 struct clockinfo clkinfo; 2159 size_t sz; 2160 int rc; 2161 2162 sz = sizeof(clkinfo); 2163 rc = prog_sysctl(name, namelen, &clkinfo, &sz, NULL, 0); 2164 if (rc == -1) { 2165 sysctlerror(1); 2166 return; 2167 } 2168 if (sz != sizeof(clkinfo)) 2169 errx(EXIT_FAILURE, "%s: !returned size wrong!", sname); 2170 2171 if (xflag || rflag) { 2172 display_struct(pnode, sname, &clkinfo, sz, 2173 DISPLAY_VALUE); 2174 return; 2175 } 2176 else if (!nflag) 2177 printf("%s: ", sname); 2178 printf("tick = %d, tickadj = %d, hz = %d, profhz = %d, stathz = %d\n", 2179 clkinfo.tick, clkinfo.tickadj, 2180 clkinfo.hz, clkinfo.profhz, clkinfo.stathz); 2181 } 2182 2183 /*ARGSUSED*/ 2184 static void 2185 kern_boottime(HANDLER_ARGS) 2186 { 2187 struct timespec timespec; 2188 time_t boottime; 2189 size_t sz; 2190 int rc; 2191 2192 sz = sizeof(timespec); 2193 rc = prog_sysctl(name, namelen, ×pec, &sz, NULL, 0); 2194 if (rc == -1) { 2195 sysctlerror(1); 2196 return; 2197 } 2198 if (sz != sizeof(timespec)) 2199 errx(EXIT_FAILURE, "%s: !returned size wrong!", sname); 2200 2201 boottime = timespec.tv_sec; 2202 if (xflag || rflag) 2203 display_struct(pnode, sname, ×pec, sz, 2204 DISPLAY_VALUE); 2205 else if (!nflag) 2206 /* ctime() provides the \n */ 2207 printf("%s%s%s", sname, eq, ctime(&boottime)); 2208 else if (nflag == 1) 2209 printf("%lld\n", (long long)boottime); 2210 else 2211 printf("%lld.%9.9ld\n", (long long)timespec.tv_sec, 2212 timespec.tv_nsec); 2213 } 2214 2215 /*ARGSUSED*/ 2216 static void 2217 kern_consdev(HANDLER_ARGS) 2218 { 2219 dev_t cons; 2220 size_t sz; 2221 int rc; 2222 2223 sz = sizeof(cons); 2224 rc = prog_sysctl(name, namelen, &cons, &sz, NULL, 0); 2225 if (rc == -1) { 2226 sysctlerror(1); 2227 return; 2228 } 2229 if (sz != sizeof(cons)) 2230 errx(EXIT_FAILURE, "%s: !returned size wrong!", sname); 2231 2232 if (xflag || rflag) 2233 display_struct(pnode, sname, &cons, sz, 2234 DISPLAY_VALUE); 2235 else { 2236 if (!nflag) 2237 printf("%s%s", sname, eq); 2238 if (nflag < 2 && (sname = devname(cons, S_IFCHR)) != NULL) 2239 printf("%s\n", sname); 2240 else 2241 printf("0x%llx\n", (unsigned long long)cons); 2242 } 2243 } 2244 2245 /*ARGSUSED*/ 2246 static void 2247 kern_cp_time(HANDLER_ARGS) 2248 { 2249 u_int64_t *cp_time; 2250 size_t sz, osz; 2251 int rc, i, n; 2252 char s[sizeof("kern.cp_time.nnnnnn")]; 2253 const char *tname; 2254 2255 /* 2256 * three things to do here. 2257 * case 1: get sum (no Aflag and namelen == 2) 2258 * case 2: get specific processor (namelen == 3) 2259 * case 3: get all processors (Aflag and namelen == 2) 2260 */ 2261 2262 if (namelen == 2 && Aflag) { 2263 sz = sizeof(n); 2264 rc = prog_sysctlbyname("hw.ncpu", &n, &sz, NULL, 0); 2265 if (rc != 0) 2266 return; /* XXX print an error, eh? */ 2267 n++; /* Add on space for the sum. */ 2268 sz = n * sizeof(u_int64_t) * CPUSTATES; 2269 } 2270 else { 2271 n = -1; /* Just print one data set. */ 2272 sz = sizeof(u_int64_t) * CPUSTATES; 2273 } 2274 2275 cp_time = malloc(sz); 2276 if (cp_time == NULL) { 2277 sysctlerror(1); 2278 return; 2279 } 2280 2281 osz = sz; 2282 rc = prog_sysctl(name, namelen, cp_time + (n != -1) * CPUSTATES, &osz, 2283 NULL, 0); 2284 2285 if (rc == -1) { 2286 sysctlerror(1); 2287 free(cp_time); 2288 return; 2289 } 2290 2291 /* 2292 * Check, but account for space we'll occupy with the sum. 2293 */ 2294 if (osz != sz - (n != -1) * CPUSTATES * sizeof(u_int64_t)) 2295 errx(EXIT_FAILURE, "%s: !returned size wrong!", sname); 2296 2297 /* 2298 * Compute the actual sum. Two calls would be easier (we 2299 * could just call ourselves recursively above), but the 2300 * numbers wouldn't add up. 2301 */ 2302 if (n != -1) { 2303 memset(cp_time, 0, sizeof(u_int64_t) * CPUSTATES); 2304 for (i = 1; i < n; i++) { 2305 cp_time[CP_USER] += cp_time[i * CPUSTATES + CP_USER]; 2306 cp_time[CP_NICE] += cp_time[i * CPUSTATES + CP_NICE]; 2307 cp_time[CP_SYS] += cp_time[i * CPUSTATES + CP_SYS]; 2308 cp_time[CP_INTR] += cp_time[i * CPUSTATES + CP_INTR]; 2309 cp_time[CP_IDLE] += cp_time[i * CPUSTATES + CP_IDLE]; 2310 } 2311 } 2312 2313 tname = sname; 2314 for (i = 0; n == -1 || i < n; i++) { 2315 if (i > 0) { 2316 (void)snprintf(s, sizeof(s), "%s%s%d", sname, sep, 2317 i - 1); 2318 tname = s; 2319 } 2320 if (xflag || rflag) 2321 display_struct(pnode, tname, cp_time + (i * CPUSTATES), 2322 sizeof(u_int64_t) * CPUSTATES, 2323 DISPLAY_VALUE); 2324 else { 2325 if (!nflag) 2326 printf("%s: ", tname); 2327 printf("user = %" PRIu64 2328 ", nice = %" PRIu64 2329 ", sys = %" PRIu64 2330 ", intr = %" PRIu64 2331 ", idle = %" PRIu64 2332 "\n", 2333 cp_time[i * CPUSTATES + CP_USER], 2334 cp_time[i * CPUSTATES + CP_NICE], 2335 cp_time[i * CPUSTATES + CP_SYS], 2336 cp_time[i * CPUSTATES + CP_INTR], 2337 cp_time[i * CPUSTATES + CP_IDLE]); 2338 } 2339 /* 2340 * Just printing the one node. 2341 */ 2342 if (n == -1) 2343 break; 2344 } 2345 2346 free(cp_time); 2347 } 2348 2349 /*ARGSUSED*/ 2350 static void 2351 kern_drivers(HANDLER_ARGS) 2352 { 2353 struct kinfo_drivers *kd; 2354 size_t sz, i; 2355 int rc; 2356 const char *comma; 2357 2358 rc = prog_sysctl(name, namelen, NULL, &sz, NULL, 0); 2359 if (rc == -1) { 2360 sysctlerror(1); 2361 return; 2362 } 2363 2364 if (sz % sizeof(*kd)) 2365 err(EXIT_FAILURE, "bad size %zu for kern.drivers", sz); 2366 2367 kd = malloc(sz); 2368 if (kd == NULL) { 2369 sysctlerror(1); 2370 return; 2371 } 2372 2373 rc = prog_sysctl(name, namelen, kd, &sz, NULL, 0); 2374 if (rc == -1) { 2375 sysctlerror(1); 2376 free(kd); 2377 return; 2378 } 2379 2380 comma = ""; 2381 if (!nflag) 2382 printf("%s%s", sname, eq); 2383 for (i = 0, sz /= sizeof(*kd); i < sz; i++) { 2384 (void)printf("%s[%d %d %s]", comma, kd[i].d_cmajor, 2385 kd[i].d_bmajor, kd[i].d_name); 2386 comma = ", "; 2387 } 2388 (void)printf("\n"); 2389 free(kd); 2390 } 2391 2392 /*ARGSUSED*/ 2393 static void 2394 kern_cp_id(HANDLER_ARGS) 2395 { 2396 u_int64_t *cp_id; 2397 size_t sz, osz; 2398 int rc, i, n; 2399 char s[sizeof("kern.cp_id.nnnnnn")]; 2400 const char *tname; 2401 struct sysctlnode node = *pnode; 2402 2403 /* 2404 * three things to do here. 2405 * case 1: print a specific cpu id (namelen == 3) 2406 * case 2: print all cpu ids separately (Aflag set) 2407 * case 3: print all cpu ids on one line 2408 */ 2409 2410 if (namelen == 2) { 2411 sz = sizeof(n); 2412 rc = prog_sysctlbyname("hw.ncpu", &n, &sz, NULL, 0); 2413 if (rc != 0) 2414 return; /* XXX print an error, eh? */ 2415 sz = n * sizeof(u_int64_t); 2416 } 2417 else { 2418 n = -1; /* Just print one cpu id. */ 2419 sz = sizeof(u_int64_t); 2420 } 2421 2422 cp_id = malloc(sz); 2423 if (cp_id == NULL) { 2424 sysctlerror(1); 2425 return; 2426 } 2427 2428 osz = sz; 2429 rc = prog_sysctl(name, namelen, cp_id, &osz, NULL, 0); 2430 if (rc == -1) { 2431 sysctlerror(1); 2432 free(cp_id); 2433 return; 2434 } 2435 2436 /* 2437 * Check that we got back what we asked for. 2438 */ 2439 if (osz != sz) 2440 errx(EXIT_FAILURE, "%s: !returned size wrong!", sname); 2441 2442 /* pretend for output purposes */ 2443 node.sysctl_flags = SYSCTL_FLAGS(pnode->sysctl_flags) | 2444 SYSCTL_TYPE(CTLTYPE_QUAD); 2445 2446 tname = sname; 2447 if (namelen == 3) 2448 display_number(&node, tname, cp_id, 2449 sizeof(u_int64_t), 2450 DISPLAY_VALUE); 2451 else if (Aflag) { 2452 for (i = 0; i < n; i++) { 2453 (void)snprintf(s, sizeof(s), "%s%s%d", sname, sep, i); 2454 tname = s; 2455 display_number(&node, tname, &cp_id[i], 2456 sizeof(u_int64_t), 2457 DISPLAY_VALUE); 2458 } 2459 } 2460 else { 2461 if (xflag || rflag) 2462 display_struct(pnode, tname, cp_id, sz, DISPLAY_VALUE); 2463 else { 2464 if (!nflag) 2465 printf("%s: ", tname); 2466 for (i = 0; i < n; i++) { 2467 if (i) 2468 printf(", "); 2469 printf("%d = %" PRIu64, i, cp_id[i]); 2470 } 2471 printf("\n"); 2472 } 2473 } 2474 2475 free(cp_id); 2476 } 2477 2478 /*ARGSUSED*/ 2479 static void 2480 vm_loadavg(HANDLER_ARGS) 2481 { 2482 struct loadavg loadavg; 2483 size_t sz; 2484 int rc; 2485 2486 sz = sizeof(loadavg); 2487 rc = prog_sysctl(name, namelen, &loadavg, &sz, NULL, 0); 2488 if (rc == -1) { 2489 sysctlerror(1); 2490 return; 2491 } 2492 if (sz != sizeof(loadavg)) 2493 errx(EXIT_FAILURE, "%s: !returned size wrong!", sname); 2494 2495 if (xflag || rflag) { 2496 display_struct(pnode, sname, &loadavg, sz, 2497 DISPLAY_VALUE); 2498 return; 2499 } 2500 if (!nflag) 2501 printf("%s: ", sname); 2502 printf("%.2f %.2f %.2f\n", 2503 (double) loadavg.ldavg[0] / loadavg.fscale, 2504 (double) loadavg.ldavg[1] / loadavg.fscale, 2505 (double) loadavg.ldavg[2] / loadavg.fscale); 2506 } 2507 2508 /*ARGSUSED*/ 2509 static void 2510 proc_limit(HANDLER_ARGS) 2511 { 2512 u_quad_t olim, *newp, nlim; 2513 size_t osz, nsz; 2514 char *t; 2515 int rc; 2516 2517 if (fn) 2518 trim_whitespace(value, 3); 2519 2520 osz = sizeof(olim); 2521 if (value != NULL) { 2522 nsz = sizeof(nlim); 2523 newp = &nlim; 2524 if (strcmp(value, "unlimited") == 0) 2525 nlim = RLIM_INFINITY; 2526 else { 2527 errno = 0; 2528 nlim = strtouq(value, &t, 0); 2529 if (t == value || *t != '\0' || errno != 0) { 2530 sysctlperror("%s: '%s' is not a valid limit\n", 2531 sname, value); 2532 EXIT(EXIT_FAILURE); 2533 } 2534 } 2535 } 2536 else { 2537 nsz = 0; 2538 newp = NULL; 2539 } 2540 2541 rc = prog_sysctl(name, namelen, &olim, &osz, newp, nsz); 2542 if (rc == -1) { 2543 sysctlerror(newp == NULL); 2544 return; 2545 } 2546 2547 if (newp && qflag) 2548 return; 2549 2550 if (rflag || xflag || olim != RLIM_INFINITY) 2551 display_number(pnode, sname, &olim, sizeof(olim), 2552 newp ? DISPLAY_OLD : DISPLAY_VALUE); 2553 else 2554 display_string(pnode, sname, "unlimited", 10, 2555 newp ? DISPLAY_OLD : DISPLAY_VALUE); 2556 2557 if (newp) { 2558 if (rflag || xflag || nlim != RLIM_INFINITY) 2559 display_number(pnode, sname, &nlim, sizeof(nlim), 2560 DISPLAY_NEW); 2561 else 2562 display_string(pnode, sname, "unlimited", 10, 2563 DISPLAY_NEW); 2564 } 2565 } 2566 2567 #ifdef CPU_DISKINFO 2568 /*ARGSUSED*/ 2569 static void 2570 machdep_diskinfo(HANDLER_ARGS) 2571 { 2572 struct disklist *dl; 2573 struct biosdisk_info *bi; 2574 struct nativedisk_info *ni; 2575 int rc; 2576 size_t sz; 2577 uint i, b, lim; 2578 2579 rc = prog_sysctl(name, namelen, NULL, &sz, NULL, 0); 2580 if (rc == -1) { 2581 sysctlerror(1); 2582 return; 2583 } 2584 dl = malloc(sz); 2585 if (dl == NULL) { 2586 sysctlerror(1); 2587 return; 2588 } 2589 rc = prog_sysctl(name, namelen, dl, &sz, NULL, 0); 2590 if (rc == -1) { 2591 sysctlerror(1); 2592 return; 2593 } 2594 2595 if (!nflag) 2596 printf("%s: ", sname); 2597 lim = dl->dl_nbiosdisks; 2598 if (lim > MAX_BIOSDISKS) 2599 lim = MAX_BIOSDISKS; 2600 for (bi = dl->dl_biosdisks, i = 0; i < lim; bi++, i++) 2601 printf("%x:%" PRIu64 "(%d/%d/%d),%x ", 2602 bi->bi_dev, bi->bi_lbasecs, 2603 bi->bi_cyl, bi->bi_head, bi->bi_sec, 2604 bi->bi_flags); 2605 lim = dl->dl_nnativedisks; 2606 ni = dl->dl_nativedisks; 2607 bi = dl->dl_biosdisks; 2608 /* LINTED -- pointer casts are tedious */ 2609 if ((char *)&ni[lim] != (char *)dl + sz) { 2610 sysctlperror("%s: size mismatch\n", gsname); 2611 return; 2612 } 2613 for (i = 0; i < lim; ni++, i++) { 2614 char t = ':'; 2615 printf(" %.*s", (int)sizeof ni->ni_devname, 2616 ni->ni_devname); 2617 for (b = 0; b < (unsigned int)ni->ni_nmatches; t = ',', b++) 2618 printf("%c%x", t, 2619 bi[ni->ni_biosmatches[b]].bi_dev); 2620 } 2621 printf("\n"); 2622 free(dl); 2623 } 2624 #endif /* CPU_DISKINFO */ 2625 2626 /*ARGSUSED*/ 2627 static void 2628 mode_bits(HANDLER_ARGS) 2629 { 2630 char buf[12], outbuf[100]; 2631 int o, m, *newp, rc; 2632 size_t osz, nsz; 2633 mode_t om, mm; 2634 2635 if (fn) 2636 trim_whitespace(value, 3); 2637 2638 newp = NULL; 2639 osz = sizeof(o); 2640 if (value != NULL) { 2641 void *foo; 2642 int tt; 2643 size_t ttsz = sizeof(tt); 2644 mode_t old_umask; 2645 2646 nsz = sizeof(m); 2647 newp = &m; 2648 errno = 0; 2649 rc = prog_sysctl(name, namelen, &tt, &ttsz, NULL, 0); 2650 if (rc == -1) { 2651 sysctlperror("%s: failed query\n", sname); 2652 return; 2653 } 2654 2655 old_umask = umask(0); 2656 foo = setmode(value); 2657 umask(old_umask); 2658 if (foo == NULL) { 2659 sysctlperror("%s: '%s' is an invalid mode\n", sname, 2660 value); 2661 EXIT(EXIT_FAILURE); 2662 } 2663 old_umask = umask(0); 2664 m = getmode(foo, (mode_t)tt); 2665 umask(old_umask); 2666 if (errno) { 2667 sysctlperror("%s: '%s' is an invalid mode\n", sname, 2668 value); 2669 EXIT(EXIT_FAILURE); 2670 } 2671 } 2672 else { 2673 nsz = 0; 2674 newp = NULL; 2675 } 2676 2677 rc = prog_sysctl(name, namelen, &o, &osz, newp, nsz); 2678 if (rc == -1) { 2679 sysctlerror(newp == NULL); 2680 return; 2681 } 2682 2683 if (newp && qflag) 2684 return; 2685 2686 om = (mode_t)o; 2687 mm = (mode_t)m; 2688 2689 if (rflag || xflag) 2690 display_number(pnode, sname, &o, sizeof(o), 2691 newp ? DISPLAY_OLD : DISPLAY_VALUE); 2692 else { 2693 memset(buf, 0, sizeof(buf)); 2694 strmode(om, buf); 2695 rc = snprintf(outbuf, sizeof(outbuf), "%04o (%s)", om, buf + 1); 2696 display_string(pnode, sname, outbuf, rc, newp ? DISPLAY_OLD : DISPLAY_VALUE); 2697 } 2698 2699 if (newp) { 2700 if (rflag || xflag) 2701 display_number(pnode, sname, &m, sizeof(m), 2702 DISPLAY_NEW); 2703 else { 2704 memset(buf, 0, sizeof(buf)); 2705 strmode(mm, buf); 2706 rc = snprintf(outbuf, sizeof(outbuf), "%04o (%s)", mm, buf + 1); 2707 display_string(pnode, sname, outbuf, rc, DISPLAY_NEW); 2708 } 2709 } 2710 } 2711 2712 typedef __BITMAP_TYPE(, uint32_t, 0x10000) bitmap; 2713 2714 static char * 2715 bitmask_print(const bitmap *o) 2716 { 2717 char *s, *os; 2718 2719 s = os = NULL; 2720 for (size_t i = 0; i < MAXPORTS; i++) 2721 if (__BITMAP_ISSET(i, o)) { 2722 int rv; 2723 2724 if (os) 2725 rv = asprintf(&s, "%s,%zu", os, i); 2726 else 2727 rv = asprintf(&s, "%zu", i); 2728 if (rv == -1) 2729 err(EXIT_FAILURE, "%s 1", __func__); 2730 free(os); 2731 os = s; 2732 } 2733 if (s == NULL && (s = strdup("")) == NULL) 2734 err(EXIT_FAILURE, "%s 2", __func__); 2735 return s; 2736 } 2737 2738 static void 2739 bitmask_scan(const void *v, bitmap *o) 2740 { 2741 char *s = strdup(v); 2742 if (s == NULL) 2743 err(EXIT_FAILURE, "%s", __func__); 2744 2745 __BITMAP_ZERO(o); 2746 for (s = strtok(s, ","); s; s = strtok(NULL, ",")) { 2747 char *e; 2748 errno = 0; 2749 unsigned long l = strtoul(s, &e, 0); 2750 if ((l == ULONG_MAX && errno == ERANGE) || s == e || *e) 2751 errx(EXIT_FAILURE, "Invalid port: %s", s); 2752 if (l >= MAXPORTS) 2753 errx(EXIT_FAILURE, "Port out of range: %s", s); 2754 __BITMAP_SET(l, o); 2755 } 2756 } 2757 2758 2759 static void 2760 reserve(HANDLER_ARGS) 2761 { 2762 int rc; 2763 size_t osz, nsz; 2764 bitmap o, n; 2765 2766 if (fn) 2767 trim_whitespace(value, 3); 2768 2769 osz = sizeof(o); 2770 if (value) { 2771 bitmask_scan(value, &n); 2772 value = (char *)&n; 2773 nsz = sizeof(n); 2774 } else 2775 nsz = 0; 2776 2777 rc = prog_sysctl(name, namelen, &o, &osz, value, nsz); 2778 if (rc == -1) { 2779 sysctlerror(value == NULL); 2780 return; 2781 } 2782 2783 if (value && qflag) 2784 return; 2785 2786 if (rflag || xflag) 2787 display_struct(pnode, sname, &o, sizeof(o), 2788 value ? DISPLAY_OLD : DISPLAY_VALUE); 2789 else { 2790 char *s = bitmask_print(&o); 2791 display_string(pnode, sname, s, strlen(s), 2792 value ? DISPLAY_OLD : DISPLAY_VALUE); 2793 free(s); 2794 } 2795 2796 if (value) { 2797 if (rflag || xflag) 2798 display_struct(pnode, sname, &n, sizeof(n), 2799 DISPLAY_NEW); 2800 else { 2801 char *s = bitmask_print(&n); 2802 display_string(pnode, sname, s, strlen(s), DISPLAY_NEW); 2803 free(s); 2804 } 2805 } 2806 } 2807
Indexes created Sun Sep 21 20:09:37 GMT 2025