init_sysctl.c revision 1.183
1 /* $NetBSD: init_sysctl.c,v 1.183 2011/08/30 12:39:59 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 2003, 2007, 2008, 2009 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, and by Andrew Doran. 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 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: init_sysctl.c,v 1.183 2011/08/30 12:39:59 bouyer Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_compat_netbsd.h" 37 #include "opt_modular.h" 38 #include "opt_sa.h" 39 #include "opt_posix.h" 40 #include "pty.h" 41 #include "rnd.h" 42 43 #include <sys/types.h> 44 #include <sys/param.h> 45 #include <sys/sysctl.h> 46 #include <sys/cpu.h> 47 #include <sys/errno.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/unistd.h> 51 #include <sys/disklabel.h> 52 #include <sys/rnd.h> 53 #include <sys/vnode.h> 54 #include <sys/mount.h> 55 #include <sys/namei.h> 56 #include <sys/msgbuf.h> 57 #include <dev/cons.h> 58 #include <sys/socketvar.h> 59 #include <sys/file.h> 60 #include <sys/filedesc.h> 61 #include <sys/tty.h> 62 #include <sys/kmem.h> 63 #include <sys/resource.h> 64 #include <sys/resourcevar.h> 65 #include <sys/exec.h> 66 #include <sys/conf.h> 67 #include <sys/device.h> 68 #include <sys/stat.h> 69 #include <sys/kauth.h> 70 #include <sys/ktrace.h> 71 #include <sys/ksem.h> 72 73 #ifdef COMPAT_50 74 #include <compat/sys/time.h> 75 #endif 76 77 #ifdef KERN_SA 78 #include <sys/sa.h> 79 #endif 80 81 #include <sys/cpu.h> 82 83 #if defined(MODULAR) || defined(P1003_1B_SEMAPHORE) 84 int posix_semaphores = 200112; 85 #else 86 int posix_semaphores; 87 #endif 88 89 int security_setidcore_dump; 90 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 91 uid_t security_setidcore_owner = 0; 92 gid_t security_setidcore_group = 0; 93 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 94 95 static const u_int sysctl_flagmap[] = { 96 PK_ADVLOCK, P_ADVLOCK, 97 PK_EXEC, P_EXEC, 98 PK_NOCLDWAIT, P_NOCLDWAIT, 99 PK_32, P_32, 100 PK_CLDSIGIGN, P_CLDSIGIGN, 101 PK_SUGID, P_SUGID, 102 0 103 }; 104 105 static const u_int sysctl_sflagmap[] = { 106 PS_NOCLDSTOP, P_NOCLDSTOP, 107 PS_WEXIT, P_WEXIT, 108 PS_STOPFORK, P_STOPFORK, 109 PS_STOPEXEC, P_STOPEXEC, 110 PS_STOPEXIT, P_STOPEXIT, 111 0 112 }; 113 114 static const u_int sysctl_slflagmap[] = { 115 PSL_TRACED, P_TRACED, 116 PSL_FSTRACE, P_FSTRACE, 117 PSL_CHTRACED, P_CHTRACED, 118 PSL_SYSCALL, P_SYSCALL, 119 0 120 }; 121 122 static const u_int sysctl_lflagmap[] = { 123 PL_CONTROLT, P_CONTROLT, 124 PL_PPWAIT, P_PPWAIT, 125 0 126 }; 127 128 static const u_int sysctl_stflagmap[] = { 129 PST_PROFIL, P_PROFIL, 130 0 131 132 }; 133 134 static const u_int sysctl_lwpprflagmap[] = { 135 LPR_DETACHED, L_DETACHED, 136 0 137 }; 138 139 /* 140 * try over estimating by 5 procs/lwps 141 */ 142 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 143 144 static int dcopyout(struct lwp *, const void *, void *, size_t); 145 146 static int 147 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 148 { 149 int error; 150 151 error = copyout(kaddr, uaddr, len); 152 ktrmibio(-1, UIO_READ, uaddr, len, error); 153 154 return error; 155 } 156 157 #ifdef DIAGNOSTIC 158 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 159 #endif 160 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 161 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 162 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 163 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 164 static int sysctl_setlen(SYSCTLFN_PROTO); 165 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 166 static int sysctl_msgbuf(SYSCTLFN_PROTO); 167 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 168 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 169 #if NPTY > 0 170 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 171 #endif /* NPTY > 0 */ 172 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 173 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 174 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 175 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 176 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 177 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 178 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 179 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 180 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 181 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 182 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 183 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 184 185 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 186 187 /* 188 * ******************************************************************** 189 * section 1: setup routines 190 * ******************************************************************** 191 * These functions are stuffed into a link set for sysctl setup 192 * functions. They're never called or referenced from anywhere else. 193 * ******************************************************************** 194 */ 195 196 /* 197 * this setup routine is a replacement for kern_sysctl() 198 */ 199 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 200 { 201 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 202 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 203 extern int dumponpanic; /* defined in kern/subr_prf.c */ 204 const struct sysctlnode *rnode; 205 206 sysctl_createv(clog, 0, NULL, NULL, 207 CTLFLAG_PERMANENT, 208 CTLTYPE_NODE, "kern", NULL, 209 NULL, 0, NULL, 0, 210 CTL_KERN, CTL_EOL); 211 212 sysctl_createv(clog, 0, NULL, NULL, 213 CTLFLAG_PERMANENT, 214 CTLTYPE_STRING, "ostype", 215 SYSCTL_DESCR("Operating system type"), 216 NULL, 0, __UNCONST(&ostype), 0, 217 CTL_KERN, KERN_OSTYPE, CTL_EOL); 218 sysctl_createv(clog, 0, NULL, NULL, 219 CTLFLAG_PERMANENT, 220 CTLTYPE_STRING, "osrelease", 221 SYSCTL_DESCR("Operating system release"), 222 NULL, 0, __UNCONST(&osrelease), 0, 223 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 224 sysctl_createv(clog, 0, NULL, NULL, 225 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 226 CTLTYPE_INT, "osrevision", 227 SYSCTL_DESCR("Operating system revision"), 228 NULL, __NetBSD_Version__, NULL, 0, 229 CTL_KERN, KERN_OSREV, CTL_EOL); 230 sysctl_createv(clog, 0, NULL, NULL, 231 CTLFLAG_PERMANENT, 232 CTLTYPE_STRING, "version", 233 SYSCTL_DESCR("Kernel version"), 234 NULL, 0, __UNCONST(&version), 0, 235 CTL_KERN, KERN_VERSION, CTL_EOL); 236 sysctl_createv(clog, 0, NULL, NULL, 237 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 238 CTLTYPE_INT, "maxvnodes", 239 SYSCTL_DESCR("Maximum number of vnodes"), 240 sysctl_kern_maxvnodes, 0, NULL, 0, 241 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 242 sysctl_createv(clog, 0, NULL, NULL, 243 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 244 CTLTYPE_INT, "maxproc", 245 SYSCTL_DESCR("Maximum number of simultaneous processes"), 246 sysctl_kern_maxproc, 0, NULL, 0, 247 CTL_KERN, KERN_MAXPROC, CTL_EOL); 248 sysctl_createv(clog, 0, NULL, NULL, 249 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 250 CTLTYPE_INT, "maxfiles", 251 SYSCTL_DESCR("Maximum number of open files"), 252 NULL, 0, &maxfiles, 0, 253 CTL_KERN, KERN_MAXFILES, CTL_EOL); 254 sysctl_createv(clog, 0, NULL, NULL, 255 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 256 CTLTYPE_INT, "argmax", 257 SYSCTL_DESCR("Maximum number of bytes of arguments to " 258 "execve(2)"), 259 NULL, ARG_MAX, NULL, 0, 260 CTL_KERN, KERN_ARGMAX, CTL_EOL); 261 sysctl_createv(clog, 0, NULL, NULL, 262 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 263 CTLTYPE_STRING, "hostname", 264 SYSCTL_DESCR("System hostname"), 265 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 266 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 267 sysctl_createv(clog, 0, NULL, NULL, 268 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 269 CTLTYPE_INT, "hostid", 270 SYSCTL_DESCR("System host ID number"), 271 sysctl_kern_hostid, 0, NULL, 0, 272 CTL_KERN, KERN_HOSTID, CTL_EOL); 273 sysctl_createv(clog, 0, NULL, NULL, 274 CTLFLAG_PERMANENT, 275 CTLTYPE_STRUCT, "clockrate", 276 SYSCTL_DESCR("Kernel clock rates"), 277 sysctl_kern_clockrate, 0, NULL, 278 sizeof(struct clockinfo), 279 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 280 sysctl_createv(clog, 0, NULL, NULL, 281 CTLFLAG_PERMANENT, 282 CTLTYPE_INT, "hardclock_ticks", 283 SYSCTL_DESCR("Number of hardclock ticks"), 284 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 285 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 286 sysctl_createv(clog, 0, NULL, NULL, 287 CTLFLAG_PERMANENT, 288 CTLTYPE_STRUCT, "vnode", 289 SYSCTL_DESCR("System vnode table"), 290 sysctl_kern_vnode, 0, NULL, 0, 291 CTL_KERN, KERN_VNODE, CTL_EOL); 292 #ifndef GPROF 293 sysctl_createv(clog, 0, NULL, NULL, 294 CTLFLAG_PERMANENT, 295 CTLTYPE_NODE, "profiling", 296 SYSCTL_DESCR("Profiling information (not available)"), 297 sysctl_notavail, 0, NULL, 0, 298 CTL_KERN, KERN_PROF, CTL_EOL); 299 #endif 300 sysctl_createv(clog, 0, NULL, NULL, 301 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 302 CTLTYPE_INT, "posix1version", 303 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 304 "with which the operating system attempts " 305 "to comply"), 306 NULL, _POSIX_VERSION, NULL, 0, 307 CTL_KERN, KERN_POSIX1, CTL_EOL); 308 sysctl_createv(clog, 0, NULL, NULL, 309 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 310 CTLTYPE_INT, "ngroups", 311 SYSCTL_DESCR("Maximum number of supplemental groups"), 312 NULL, NGROUPS_MAX, NULL, 0, 313 CTL_KERN, KERN_NGROUPS, CTL_EOL); 314 sysctl_createv(clog, 0, NULL, NULL, 315 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 316 CTLTYPE_INT, "job_control", 317 SYSCTL_DESCR("Whether job control is available"), 318 NULL, 1, NULL, 0, 319 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 320 sysctl_createv(clog, 0, NULL, NULL, 321 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 322 CTLTYPE_INT, "saved_ids", 323 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 324 "available"), NULL, 325 #ifdef _POSIX_SAVED_IDS 326 1, 327 #else /* _POSIX_SAVED_IDS */ 328 0, 329 #endif /* _POSIX_SAVED_IDS */ 330 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 331 sysctl_createv(clog, 0, NULL, NULL, 332 CTLFLAG_PERMANENT|CTLFLAG_HEX, 333 CTLTYPE_INT, "boothowto", 334 SYSCTL_DESCR("Flags from boot loader"), 335 NULL, 0, &boothowto, sizeof(boothowto), 336 CTL_KERN, CTL_CREATE, CTL_EOL); 337 sysctl_createv(clog, 0, NULL, NULL, 338 CTLFLAG_PERMANENT, 339 CTLTYPE_STRUCT, "boottime", 340 SYSCTL_DESCR("System boot time"), 341 NULL, 0, &boottime, sizeof(boottime), 342 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 343 #ifdef COMPAT_50 344 { 345 extern struct timeval50 boottime50; 346 sysctl_createv(clog, 0, NULL, NULL, 347 CTLFLAG_PERMANENT, 348 CTLTYPE_STRUCT, "oboottime", 349 SYSCTL_DESCR("System boot time"), 350 NULL, 0, &boottime50, sizeof(boottime50), 351 CTL_KERN, KERN_OBOOTTIME, CTL_EOL); 352 } 353 #endif 354 sysctl_createv(clog, 0, NULL, NULL, 355 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 356 CTLTYPE_STRING, "domainname", 357 SYSCTL_DESCR("YP domain name"), 358 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 359 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 360 sysctl_createv(clog, 0, NULL, NULL, 361 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 362 CTLTYPE_INT, "maxpartitions", 363 SYSCTL_DESCR("Maximum number of partitions allowed per " 364 "disk"), 365 NULL, MAXPARTITIONS, NULL, 0, 366 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 367 sysctl_createv(clog, 0, NULL, NULL, 368 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 369 CTLTYPE_INT, "rawpartition", 370 SYSCTL_DESCR("Raw partition of a disk"), 371 NULL, RAW_PART, NULL, 0, 372 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 373 sysctl_createv(clog, 0, NULL, NULL, 374 CTLFLAG_PERMANENT, 375 CTLTYPE_STRUCT, "timex", NULL, 376 sysctl_notavail, 0, NULL, 0, 377 CTL_KERN, KERN_TIMEX, CTL_EOL); 378 sysctl_createv(clog, 0, NULL, NULL, 379 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 380 CTLTYPE_INT, "rtc_offset", 381 SYSCTL_DESCR("Offset of real time clock from UTC in " 382 "minutes"), 383 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 384 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 385 sysctl_createv(clog, 0, NULL, NULL, 386 CTLFLAG_PERMANENT, 387 CTLTYPE_STRING, "root_device", 388 SYSCTL_DESCR("Name of the root device"), 389 sysctl_root_device, 0, NULL, 0, 390 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 391 sysctl_createv(clog, 0, NULL, NULL, 392 CTLFLAG_PERMANENT, 393 CTLTYPE_INT, "msgbufsize", 394 SYSCTL_DESCR("Size of the kernel message buffer"), 395 sysctl_msgbuf, 0, NULL, 0, 396 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 397 sysctl_createv(clog, 0, NULL, NULL, 398 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 399 CTLTYPE_INT, "fsync", 400 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 401 "Synchronization Option is available on " 402 "this system"), 403 NULL, 1, NULL, 0, 404 CTL_KERN, KERN_FSYNC, CTL_EOL); 405 sysctl_createv(clog, 0, NULL, NULL, 406 CTLFLAG_PERMANENT, 407 CTLTYPE_NODE, "ipc", 408 SYSCTL_DESCR("SysV IPC options"), 409 NULL, 0, NULL, 0, 410 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 411 sysctl_createv(clog, 0, NULL, NULL, 412 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 413 CTLTYPE_INT, "sysvmsg", 414 SYSCTL_DESCR("System V style message support available"), 415 NULL, 416 #ifdef SYSVMSG 417 1, 418 #else /* SYSVMSG */ 419 0, 420 #endif /* SYSVMSG */ 421 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 422 sysctl_createv(clog, 0, NULL, NULL, 423 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 424 CTLTYPE_INT, "sysvsem", 425 SYSCTL_DESCR("System V style semaphore support " 426 "available"), NULL, 427 #ifdef SYSVSEM 428 1, 429 #else /* SYSVSEM */ 430 0, 431 #endif /* SYSVSEM */ 432 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 433 sysctl_createv(clog, 0, NULL, NULL, 434 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 435 CTLTYPE_INT, "sysvshm", 436 SYSCTL_DESCR("System V style shared memory support " 437 "available"), NULL, 438 #ifdef SYSVSHM 439 1, 440 #else /* SYSVSHM */ 441 0, 442 #endif /* SYSVSHM */ 443 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 444 sysctl_createv(clog, 0, NULL, NULL, 445 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 446 CTLTYPE_INT, "synchronized_io", 447 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 448 "I/O Option is available on this system"), 449 NULL, 1, NULL, 0, 450 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 451 sysctl_createv(clog, 0, NULL, NULL, 452 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 453 CTLTYPE_INT, "iov_max", 454 SYSCTL_DESCR("Maximum number of iovec structures per " 455 "process"), 456 NULL, IOV_MAX, NULL, 0, 457 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 458 sysctl_createv(clog, 0, NULL, NULL, 459 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 460 CTLTYPE_INT, "mapped_files", 461 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 462 "Files Option is available on this system"), 463 NULL, 1, NULL, 0, 464 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 465 sysctl_createv(clog, 0, NULL, NULL, 466 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 467 CTLTYPE_INT, "memlock", 468 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 469 "Locking Option is available on this " 470 "system"), 471 NULL, 1, NULL, 0, 472 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 473 sysctl_createv(clog, 0, NULL, NULL, 474 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 475 CTLTYPE_INT, "memlock_range", 476 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 477 "Locking Option is available on this " 478 "system"), 479 NULL, 1, NULL, 0, 480 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 481 sysctl_createv(clog, 0, NULL, NULL, 482 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 483 CTLTYPE_INT, "memory_protection", 484 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 485 "Protection Option is available on this " 486 "system"), 487 NULL, 1, NULL, 0, 488 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 489 sysctl_createv(clog, 0, NULL, NULL, 490 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 491 CTLTYPE_INT, "login_name_max", 492 SYSCTL_DESCR("Maximum login name length"), 493 NULL, LOGIN_NAME_MAX, NULL, 0, 494 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 495 sysctl_createv(clog, 0, NULL, NULL, 496 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 497 CTLTYPE_STRING, "defcorename", 498 SYSCTL_DESCR("Default core file name"), 499 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 500 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 501 sysctl_createv(clog, 0, NULL, NULL, 502 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 503 CTLTYPE_INT, "logsigexit", 504 SYSCTL_DESCR("Log process exit when caused by signals"), 505 NULL, 0, &kern_logsigexit, 0, 506 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 507 sysctl_createv(clog, 0, NULL, NULL, 508 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 509 CTLTYPE_INT, "fscale", 510 SYSCTL_DESCR("Kernel fixed-point scale factor"), 511 NULL, FSCALE, NULL, 0, 512 CTL_KERN, KERN_FSCALE, CTL_EOL); 513 sysctl_createv(clog, 0, NULL, NULL, 514 CTLFLAG_PERMANENT, 515 CTLTYPE_INT, "ccpu", 516 SYSCTL_DESCR("Scheduler exponential decay value"), 517 NULL, 0, &ccpu, 0, 518 CTL_KERN, KERN_CCPU, CTL_EOL); 519 sysctl_createv(clog, 0, NULL, NULL, 520 CTLFLAG_PERMANENT, 521 CTLTYPE_STRUCT, "cp_time", 522 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 523 sysctl_kern_cptime, 0, NULL, 0, 524 CTL_KERN, KERN_CP_TIME, CTL_EOL); 525 sysctl_createv(clog, 0, NULL, NULL, 526 CTLFLAG_PERMANENT, 527 CTLTYPE_INT, "msgbuf", 528 SYSCTL_DESCR("Kernel message buffer"), 529 sysctl_msgbuf, 0, NULL, 0, 530 CTL_KERN, KERN_MSGBUF, CTL_EOL); 531 sysctl_createv(clog, 0, NULL, NULL, 532 CTLFLAG_PERMANENT, 533 CTLTYPE_STRUCT, "consdev", 534 SYSCTL_DESCR("Console device"), 535 sysctl_consdev, 0, NULL, sizeof(dev_t), 536 CTL_KERN, KERN_CONSDEV, CTL_EOL); 537 #if NPTY > 0 538 sysctl_createv(clog, 0, NULL, NULL, 539 CTLFLAG_PERMANENT, 540 CTLTYPE_INT, "maxptys", 541 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 542 sysctl_kern_maxptys, 0, NULL, 0, 543 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 544 #endif /* NPTY > 0 */ 545 sysctl_createv(clog, 0, NULL, NULL, 546 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 547 CTLTYPE_INT, "maxphys", 548 SYSCTL_DESCR("Maximum raw I/O transfer size"), 549 NULL, MAXPHYS, NULL, 0, 550 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 551 sysctl_createv(clog, 0, NULL, NULL, 552 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 553 CTLTYPE_INT, "sbmax", 554 SYSCTL_DESCR("Maximum socket buffer size"), 555 sysctl_kern_sbmax, 0, NULL, 0, 556 CTL_KERN, KERN_SBMAX, CTL_EOL); 557 sysctl_createv(clog, 0, NULL, NULL, 558 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 559 CTLTYPE_INT, "monotonic_clock", 560 SYSCTL_DESCR("Implementation version of the POSIX " 561 "1003.1b Monotonic Clock Option"), 562 /* XXX _POSIX_VERSION */ 563 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 564 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 565 sysctl_createv(clog, 0, NULL, NULL, 566 CTLFLAG_PERMANENT, 567 CTLTYPE_INT, "urandom", 568 SYSCTL_DESCR("Random integer value"), 569 sysctl_kern_urnd, 0, NULL, 0, 570 CTL_KERN, KERN_URND, CTL_EOL); 571 sysctl_createv(clog, 0, NULL, NULL, 572 CTLFLAG_PERMANENT, 573 CTLTYPE_INT, "arandom", 574 SYSCTL_DESCR("n bytes of random data"), 575 sysctl_kern_arnd, 0, NULL, 0, 576 CTL_KERN, KERN_ARND, CTL_EOL); 577 sysctl_createv(clog, 0, NULL, NULL, 578 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 579 CTLTYPE_INT, "labelsector", 580 SYSCTL_DESCR("Sector number containing the disklabel"), 581 NULL, LABELSECTOR, NULL, 0, 582 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 583 sysctl_createv(clog, 0, NULL, NULL, 584 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 585 CTLTYPE_INT, "labeloffset", 586 SYSCTL_DESCR("Offset of the disklabel within the " 587 "sector"), 588 NULL, LABELOFFSET, NULL, 0, 589 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 590 sysctl_createv(clog, 0, NULL, NULL, 591 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 592 CTLTYPE_INT, "labelusesmbr", 593 SYSCTL_DESCR("disklabel is inside MBR partition"), 594 NULL, LABELUSESMBR, NULL, 0, 595 CTL_KERN, CTL_CREATE, CTL_EOL); 596 sysctl_createv(clog, 0, NULL, NULL, 597 CTLFLAG_PERMANENT, 598 CTLTYPE_NODE, "lwp", 599 SYSCTL_DESCR("System-wide LWP information"), 600 sysctl_kern_lwp, 0, NULL, 0, 601 CTL_KERN, KERN_LWP, CTL_EOL); 602 sysctl_createv(clog, 0, NULL, NULL, 603 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 604 CTLTYPE_INT, "forkfsleep", 605 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 606 "to process limits"), 607 sysctl_kern_forkfsleep, 0, NULL, 0, 608 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 609 sysctl_createv(clog, 0, NULL, NULL, 610 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 611 CTLTYPE_INT, "posix_threads", 612 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 613 "Threads option to which the system " 614 "attempts to conform"), 615 /* XXX _POSIX_VERSION */ 616 NULL, _POSIX_THREADS, NULL, 0, 617 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 618 sysctl_createv(clog, 0, NULL, NULL, 619 CTLFLAG_PERMANENT, 620 CTLTYPE_INT, "posix_semaphores", 621 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 622 "Semaphores option to which the system " 623 "attempts to conform"), NULL, 624 0, &posix_semaphores, 625 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 626 sysctl_createv(clog, 0, NULL, NULL, 627 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 628 CTLTYPE_INT, "posix_barriers", 629 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 630 "Barriers option to which the system " 631 "attempts to conform"), 632 /* XXX _POSIX_VERSION */ 633 NULL, _POSIX_BARRIERS, NULL, 0, 634 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 635 sysctl_createv(clog, 0, NULL, NULL, 636 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 637 CTLTYPE_INT, "posix_timers", 638 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 639 "Timers option to which the system " 640 "attempts to conform"), 641 /* XXX _POSIX_VERSION */ 642 NULL, _POSIX_TIMERS, NULL, 0, 643 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 644 sysctl_createv(clog, 0, NULL, NULL, 645 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 646 CTLTYPE_INT, "posix_spin_locks", 647 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 648 "Locks option to which the system attempts " 649 "to conform"), 650 /* XXX _POSIX_VERSION */ 651 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 652 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 653 sysctl_createv(clog, 0, NULL, NULL, 654 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 655 CTLTYPE_INT, "posix_reader_writer_locks", 656 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 657 "Read-Write Locks option to which the " 658 "system attempts to conform"), 659 /* XXX _POSIX_VERSION */ 660 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 661 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 662 sysctl_createv(clog, 0, NULL, NULL, 663 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 664 CTLTYPE_INT, "dump_on_panic", 665 SYSCTL_DESCR("Perform a crash dump on system panic"), 666 NULL, 0, &dumponpanic, 0, 667 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 668 #ifdef DIAGNOSTIC 669 sysctl_createv(clog, 0, NULL, NULL, 670 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 671 CTLTYPE_INT, "panic_now", 672 SYSCTL_DESCR("Trigger a panic"), 673 sysctl_kern_trigger_panic, 0, NULL, 0, 674 CTL_KERN, CTL_CREATE, CTL_EOL); 675 #endif 676 sysctl_createv(clog, 0, NULL, NULL, 677 CTLFLAG_PERMANENT, 678 CTLTYPE_INT, "root_partition", 679 SYSCTL_DESCR("Root partition on the root device"), 680 sysctl_kern_root_partition, 0, NULL, 0, 681 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 682 sysctl_createv(clog, 0, NULL, NULL, 683 CTLFLAG_PERMANENT, 684 CTLTYPE_STRUCT, "drivers", 685 SYSCTL_DESCR("List of all drivers with block and " 686 "character device numbers"), 687 sysctl_kern_drivers, 0, NULL, 0, 688 CTL_KERN, KERN_DRIVERS, CTL_EOL); 689 sysctl_createv(clog, 0, NULL, NULL, 690 CTLFLAG_PERMANENT, 691 CTLTYPE_STRUCT, "cp_id", 692 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 693 sysctl_kern_cpid, 0, NULL, 0, 694 CTL_KERN, KERN_CP_ID, CTL_EOL); 695 sysctl_createv(clog, 0, NULL, &rnode, 696 CTLFLAG_PERMANENT, 697 CTLTYPE_NODE, "coredump", 698 SYSCTL_DESCR("Coredump settings."), 699 NULL, 0, NULL, 0, 700 CTL_KERN, CTL_CREATE, CTL_EOL); 701 sysctl_createv(clog, 0, &rnode, &rnode, 702 CTLFLAG_PERMANENT, 703 CTLTYPE_NODE, "setid", 704 SYSCTL_DESCR("Set-id processes' coredump settings."), 705 NULL, 0, NULL, 0, 706 CTL_CREATE, CTL_EOL); 707 sysctl_createv(clog, 0, &rnode, NULL, 708 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 709 CTLTYPE_INT, "dump", 710 SYSCTL_DESCR("Allow set-id processes to dump core."), 711 sysctl_security_setidcore, 0, &security_setidcore_dump, 712 sizeof(security_setidcore_dump), 713 CTL_CREATE, CTL_EOL); 714 sysctl_createv(clog, 0, &rnode, NULL, 715 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 716 CTLTYPE_STRING, "path", 717 SYSCTL_DESCR("Path pattern for set-id coredumps."), 718 sysctl_security_setidcorename, 0, 719 &security_setidcore_path, 720 sizeof(security_setidcore_path), 721 CTL_CREATE, CTL_EOL); 722 sysctl_createv(clog, 0, &rnode, NULL, 723 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 724 CTLTYPE_INT, "owner", 725 SYSCTL_DESCR("Owner id for set-id processes' cores."), 726 sysctl_security_setidcore, 0, &security_setidcore_owner, 727 0, 728 CTL_CREATE, CTL_EOL); 729 sysctl_createv(clog, 0, &rnode, NULL, 730 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 731 CTLTYPE_INT, "group", 732 SYSCTL_DESCR("Group id for set-id processes' cores."), 733 sysctl_security_setidcore, 0, &security_setidcore_group, 734 0, 735 CTL_CREATE, CTL_EOL); 736 sysctl_createv(clog, 0, &rnode, NULL, 737 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 738 CTLTYPE_INT, "mode", 739 SYSCTL_DESCR("Mode for set-id processes' cores."), 740 sysctl_security_setidcore, 0, &security_setidcore_mode, 741 0, 742 CTL_CREATE, CTL_EOL); 743 sysctl_createv(clog, 0, NULL, NULL, 744 #ifndef KERN_SA 745 CTLFLAG_IMMEDIATE| 746 #endif 747 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 748 CTLTYPE_INT, "no_sa_support", 749 SYSCTL_DESCR("0 if the kernel supports SA, otherwise " 750 "it doesn't"), 751 NULL, 752 #ifndef KERN_SA 753 1, NULL, 754 #else 755 0, &sa_system_disabled, 756 #endif 757 0, 758 CTL_KERN, CTL_CREATE, CTL_EOL); 759 /* kern.posix. */ 760 sysctl_createv(clog, 0, NULL, &rnode, 761 CTLFLAG_PERMANENT, 762 CTLTYPE_NODE, "posix", 763 SYSCTL_DESCR("POSIX options"), 764 NULL, 0, NULL, 0, 765 CTL_KERN, CTL_CREATE, CTL_EOL); 766 sysctl_createv(clog, 0, &rnode, NULL, 767 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 768 CTLTYPE_INT, "semmax", 769 SYSCTL_DESCR("Maximal number of semaphores"), 770 NULL, 0, &ksem_max, 0, 771 CTL_CREATE, CTL_EOL); 772 } 773 774 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 775 { 776 u_int u; 777 u_quad_t q; 778 779 sysctl_createv(clog, 0, NULL, NULL, 780 CTLFLAG_PERMANENT, 781 CTLTYPE_NODE, "hw", NULL, 782 NULL, 0, NULL, 0, 783 CTL_HW, CTL_EOL); 784 785 sysctl_createv(clog, 0, NULL, NULL, 786 CTLFLAG_PERMANENT, 787 CTLTYPE_STRING, "machine", 788 SYSCTL_DESCR("Machine class"), 789 NULL, 0, machine, 0, 790 CTL_HW, HW_MACHINE, CTL_EOL); 791 sysctl_createv(clog, 0, NULL, NULL, 792 CTLFLAG_PERMANENT, 793 CTLTYPE_STRING, "model", 794 SYSCTL_DESCR("Machine model"), 795 NULL, 0, cpu_model, 0, 796 CTL_HW, HW_MODEL, CTL_EOL); 797 sysctl_createv(clog, 0, NULL, NULL, 798 CTLFLAG_PERMANENT, 799 CTLTYPE_INT, "ncpu", 800 SYSCTL_DESCR("Number of CPUs configured"), 801 NULL, 0, &ncpu, 0, 802 CTL_HW, HW_NCPU, CTL_EOL); 803 sysctl_createv(clog, 0, NULL, NULL, 804 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 805 CTLTYPE_INT, "byteorder", 806 SYSCTL_DESCR("System byte order"), 807 NULL, BYTE_ORDER, NULL, 0, 808 CTL_HW, HW_BYTEORDER, CTL_EOL); 809 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 810 UINT_MAX : physmem * PAGE_SIZE; 811 sysctl_createv(clog, 0, NULL, NULL, 812 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 813 CTLTYPE_INT, "physmem", 814 SYSCTL_DESCR("Bytes of physical memory"), 815 NULL, u, NULL, 0, 816 CTL_HW, HW_PHYSMEM, CTL_EOL); 817 sysctl_createv(clog, 0, NULL, NULL, 818 CTLFLAG_PERMANENT, 819 CTLTYPE_INT, "usermem", 820 SYSCTL_DESCR("Bytes of non-kernel memory"), 821 sysctl_hw_usermem, 0, NULL, 0, 822 CTL_HW, HW_USERMEM, CTL_EOL); 823 sysctl_createv(clog, 0, NULL, NULL, 824 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 825 CTLTYPE_INT, "pagesize", 826 SYSCTL_DESCR("Software page size"), 827 NULL, PAGE_SIZE, NULL, 0, 828 CTL_HW, HW_PAGESIZE, CTL_EOL); 829 sysctl_createv(clog, 0, NULL, NULL, 830 CTLFLAG_PERMANENT, 831 CTLTYPE_STRING, "machine_arch", 832 SYSCTL_DESCR("Machine CPU class"), 833 NULL, 0, machine_arch, 0, 834 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 835 sysctl_createv(clog, 0, NULL, NULL, 836 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 837 CTLTYPE_INT, "alignbytes", 838 SYSCTL_DESCR("Alignment constraint for all possible " 839 "data types"), 840 NULL, ALIGNBYTES, NULL, 0, 841 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 842 sysctl_createv(clog, 0, NULL, NULL, 843 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 844 CTLTYPE_STRING, "cnmagic", 845 SYSCTL_DESCR("Console magic key sequence"), 846 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 847 CTL_HW, HW_CNMAGIC, CTL_EOL); 848 q = (u_quad_t)physmem * PAGE_SIZE; 849 sysctl_createv(clog, 0, NULL, NULL, 850 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 851 CTLTYPE_QUAD, "physmem64", 852 SYSCTL_DESCR("Bytes of physical memory"), 853 NULL, q, NULL, 0, 854 CTL_HW, HW_PHYSMEM64, CTL_EOL); 855 sysctl_createv(clog, 0, NULL, NULL, 856 CTLFLAG_PERMANENT, 857 CTLTYPE_QUAD, "usermem64", 858 SYSCTL_DESCR("Bytes of non-kernel memory"), 859 sysctl_hw_usermem, 0, NULL, 0, 860 CTL_HW, HW_USERMEM64, CTL_EOL); 861 sysctl_createv(clog, 0, NULL, NULL, 862 CTLFLAG_PERMANENT, 863 CTLTYPE_INT, "ncpuonline", 864 SYSCTL_DESCR("Number of CPUs online"), 865 NULL, 0, &ncpuonline, 0, 866 CTL_HW, HW_NCPUONLINE, CTL_EOL); 867 } 868 869 #ifdef DEBUG 870 /* 871 * Debugging related system variables. 872 */ 873 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 874 struct ctldebug debug5, debug6, debug7, debug8, debug9; 875 struct ctldebug debug10, debug11, debug12, debug13, debug14; 876 struct ctldebug debug15, debug16, debug17, debug18, debug19; 877 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 878 &debug0, &debug1, &debug2, &debug3, &debug4, 879 &debug5, &debug6, &debug7, &debug8, &debug9, 880 &debug10, &debug11, &debug12, &debug13, &debug14, 881 &debug15, &debug16, &debug17, &debug18, &debug19, 882 }; 883 884 /* 885 * this setup routine is a replacement for debug_sysctl() 886 * 887 * note that it creates several nodes per defined debug variable 888 */ 889 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 890 { 891 struct ctldebug *cdp; 892 char nodename[20]; 893 int i; 894 895 /* 896 * two ways here: 897 * 898 * the "old" way (debug.name -> value) which was emulated by 899 * the sysctl(8) binary 900 * 901 * the new way, which the sysctl(8) binary was actually using 902 903 node debug 904 node debug.0 905 string debug.0.name 906 int debug.0.value 907 int debug.name 908 909 */ 910 911 sysctl_createv(clog, 0, NULL, NULL, 912 CTLFLAG_PERMANENT, 913 CTLTYPE_NODE, "debug", NULL, 914 NULL, 0, NULL, 0, 915 CTL_DEBUG, CTL_EOL); 916 917 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 918 cdp = debugvars[i]; 919 if (cdp->debugname == NULL || cdp->debugvar == NULL) 920 continue; 921 922 snprintf(nodename, sizeof(nodename), "debug%d", i); 923 sysctl_createv(clog, 0, NULL, NULL, 924 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 925 CTLTYPE_NODE, nodename, NULL, 926 NULL, 0, NULL, 0, 927 CTL_DEBUG, i, CTL_EOL); 928 sysctl_createv(clog, 0, NULL, NULL, 929 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 930 CTLTYPE_STRING, "name", NULL, 931 /*XXXUNCONST*/ 932 NULL, 0, __UNCONST(cdp->debugname), 0, 933 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 934 sysctl_createv(clog, 0, NULL, NULL, 935 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 936 CTLTYPE_INT, "value", NULL, 937 NULL, 0, cdp->debugvar, 0, 938 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 939 sysctl_createv(clog, 0, NULL, NULL, 940 CTLFLAG_PERMANENT, 941 CTLTYPE_INT, cdp->debugname, NULL, 942 NULL, 0, cdp->debugvar, 0, 943 CTL_DEBUG, CTL_CREATE, CTL_EOL); 944 } 945 } 946 #endif /* DEBUG */ 947 948 /* 949 * ******************************************************************** 950 * section 2: private node-specific helper routines. 951 * ******************************************************************** 952 */ 953 954 #ifdef DIAGNOSTIC 955 static int 956 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 957 { 958 int newtrig, error; 959 struct sysctlnode node; 960 961 newtrig = 0; 962 node = *rnode; 963 node.sysctl_data = &newtrig; 964 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 965 if (error || newp == NULL) 966 return (error); 967 968 if (newtrig != 0) 969 panic("Panic triggered"); 970 971 return (error); 972 } 973 #endif 974 975 /* 976 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 977 * new value is lower than desiredvnodes and then calls reinit 978 * routines that needs to adjust to the new value. 979 */ 980 static int 981 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 982 { 983 int error, new_vnodes, old_vnodes, new_max; 984 struct sysctlnode node; 985 986 new_vnodes = desiredvnodes; 987 node = *rnode; 988 node.sysctl_data = &new_vnodes; 989 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 990 if (error || newp == NULL) 991 return (error); 992 993 /* Limits: 75% of KVA and physical memory. */ 994 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 995 if (new_vnodes > new_max) 996 new_vnodes = new_max; 997 998 old_vnodes = desiredvnodes; 999 desiredvnodes = new_vnodes; 1000 if (new_vnodes < old_vnodes) { 1001 error = vfs_drainvnodes(new_vnodes); 1002 if (error) { 1003 desiredvnodes = old_vnodes; 1004 return (error); 1005 } 1006 } 1007 vfs_reinit(); 1008 nchreinit(); 1009 1010 return (0); 1011 } 1012 1013 /* 1014 * sysctl helper routine for rtc_offset - set time after changes 1015 */ 1016 static int 1017 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1018 { 1019 struct timespec ts, delta; 1020 int error, new_rtc_offset; 1021 struct sysctlnode node; 1022 1023 new_rtc_offset = rtc_offset; 1024 node = *rnode; 1025 node.sysctl_data = &new_rtc_offset; 1026 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1027 if (error || newp == NULL) 1028 return (error); 1029 1030 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1031 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1032 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1033 return (EPERM); 1034 if (rtc_offset == new_rtc_offset) 1035 return (0); 1036 1037 /* if we change the offset, adjust the time */ 1038 nanotime(&ts); 1039 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1040 delta.tv_nsec = 0; 1041 timespecadd(&ts, &delta, &ts); 1042 rtc_offset = new_rtc_offset; 1043 return (settime(l->l_proc, &ts)); 1044 } 1045 1046 /* 1047 * sysctl helper routine for kern.maxproc. Ensures that the new 1048 * values are not too low or too high. 1049 */ 1050 static int 1051 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1052 { 1053 int error, nmaxproc; 1054 struct sysctlnode node; 1055 1056 nmaxproc = maxproc; 1057 node = *rnode; 1058 node.sysctl_data = &nmaxproc; 1059 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1060 if (error || newp == NULL) 1061 return (error); 1062 1063 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1064 return (EINVAL); 1065 #ifdef __HAVE_CPU_MAXPROC 1066 if (nmaxproc > cpu_maxproc()) 1067 return (EINVAL); 1068 #endif 1069 maxproc = nmaxproc; 1070 1071 return (0); 1072 } 1073 1074 /* 1075 * sysctl helper function for kern.hostid. The hostid is a long, but 1076 * we export it as an int, so we need to give it a little help. 1077 */ 1078 static int 1079 sysctl_kern_hostid(SYSCTLFN_ARGS) 1080 { 1081 int error, inthostid; 1082 struct sysctlnode node; 1083 1084 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1085 node = *rnode; 1086 node.sysctl_data = &inthostid; 1087 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1088 if (error || newp == NULL) 1089 return (error); 1090 1091 hostid = (unsigned)inthostid; 1092 1093 return (0); 1094 } 1095 1096 /* 1097 * sysctl helper function for kern.hostname and kern.domainnname. 1098 * resets the relevant recorded length when the underlying name is 1099 * changed. 1100 */ 1101 static int 1102 sysctl_setlen(SYSCTLFN_ARGS) 1103 { 1104 int error; 1105 1106 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1107 if (error || newp == NULL) 1108 return (error); 1109 1110 switch (rnode->sysctl_num) { 1111 case KERN_HOSTNAME: 1112 hostnamelen = strlen((const char*)rnode->sysctl_data); 1113 break; 1114 case KERN_DOMAINNAME: 1115 domainnamelen = strlen((const char*)rnode->sysctl_data); 1116 break; 1117 } 1118 1119 return (0); 1120 } 1121 1122 /* 1123 * sysctl helper routine for kern.clockrate. Assembles a struct on 1124 * the fly to be returned to the caller. 1125 */ 1126 static int 1127 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1128 { 1129 struct clockinfo clkinfo; 1130 struct sysctlnode node; 1131 1132 clkinfo.tick = tick; 1133 clkinfo.tickadj = tickadj; 1134 clkinfo.hz = hz; 1135 clkinfo.profhz = profhz; 1136 clkinfo.stathz = stathz ? stathz : hz; 1137 1138 node = *rnode; 1139 node.sysctl_data = &clkinfo; 1140 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1141 } 1142 1143 /* 1144 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1145 * former it merely checks the message buffer is set up. For the latter, 1146 * it also copies out the data if necessary. 1147 */ 1148 static int 1149 sysctl_msgbuf(SYSCTLFN_ARGS) 1150 { 1151 char *where = oldp; 1152 size_t len, maxlen; 1153 long beg, end; 1154 extern kmutex_t log_lock; 1155 int error; 1156 1157 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1158 msgbufenabled = 0; 1159 return (ENXIO); 1160 } 1161 1162 switch (rnode->sysctl_num) { 1163 case KERN_MSGBUFSIZE: { 1164 struct sysctlnode node = *rnode; 1165 int msg_bufs = (int)msgbufp->msg_bufs; 1166 node.sysctl_data = &msg_bufs; 1167 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1168 } 1169 case KERN_MSGBUF: 1170 break; 1171 default: 1172 return (EOPNOTSUPP); 1173 } 1174 1175 if (newp != NULL) 1176 return (EPERM); 1177 1178 if (oldp == NULL) { 1179 /* always return full buffer size */ 1180 *oldlenp = msgbufp->msg_bufs; 1181 return (0); 1182 } 1183 1184 sysctl_unlock(); 1185 1186 /* 1187 * First, copy from the write pointer to the end of 1188 * message buffer. 1189 */ 1190 error = 0; 1191 mutex_spin_enter(&log_lock); 1192 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1193 beg = msgbufp->msg_bufx; 1194 end = msgbufp->msg_bufs; 1195 mutex_spin_exit(&log_lock); 1196 1197 while (maxlen > 0) { 1198 len = MIN(end - beg, maxlen); 1199 if (len == 0) 1200 break; 1201 /* XXX unlocked, but hardly matters. */ 1202 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1203 if (error) 1204 break; 1205 where += len; 1206 maxlen -= len; 1207 1208 /* 1209 * ... then, copy from the beginning of message buffer to 1210 * the write pointer. 1211 */ 1212 beg = 0; 1213 end = msgbufp->msg_bufx; 1214 } 1215 1216 sysctl_relock(); 1217 return (error); 1218 } 1219 1220 /* 1221 * sysctl helper routine for kern.defcorename. In the case of a new 1222 * string being assigned, check that it's not a zero-length string. 1223 * (XXX the check in -current doesn't work, but do we really care?) 1224 */ 1225 static int 1226 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1227 { 1228 int error; 1229 char *newcorename; 1230 struct sysctlnode node; 1231 1232 newcorename = PNBUF_GET(); 1233 node = *rnode; 1234 node.sysctl_data = &newcorename[0]; 1235 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1236 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1237 if (error || newp == NULL) { 1238 goto done; 1239 } 1240 1241 /* 1242 * when sysctl_lookup() deals with a string, it's guaranteed 1243 * to come back nul terminated. So there. :) 1244 */ 1245 if (strlen(newcorename) == 0) { 1246 error = EINVAL; 1247 } else { 1248 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1249 error = 0; 1250 } 1251 done: 1252 PNBUF_PUT(newcorename); 1253 return error; 1254 } 1255 1256 /* 1257 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1258 * across all cpus. 1259 */ 1260 static int 1261 sysctl_kern_cptime(SYSCTLFN_ARGS) 1262 { 1263 struct sysctlnode node = *rnode; 1264 uint64_t *cp_time = NULL; 1265 int error, n = ncpu, i; 1266 struct cpu_info *ci; 1267 CPU_INFO_ITERATOR cii; 1268 1269 /* 1270 * if you specifically pass a buffer that is the size of the 1271 * sum, or if you are probing for the size, you get the "sum" 1272 * of cp_time (and the size thereof) across all processors. 1273 * 1274 * alternately, you can pass an additional mib number and get 1275 * cp_time for that particular processor. 1276 */ 1277 switch (namelen) { 1278 case 0: 1279 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1280 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1281 n = -1; /* SUM */ 1282 } 1283 else { 1284 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1285 n = -2; /* ALL */ 1286 } 1287 break; 1288 case 1: 1289 if (name[0] < 0 || name[0] >= n) 1290 return (ENOENT); /* ENOSUCHPROCESSOR */ 1291 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1292 n = name[0]; 1293 /* 1294 * adjust these so that sysctl_lookup() will be happy 1295 */ 1296 name++; 1297 namelen--; 1298 break; 1299 default: 1300 return (EINVAL); 1301 } 1302 1303 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1304 if (cp_time == NULL) 1305 return (ENOMEM); 1306 node.sysctl_data = cp_time; 1307 memset(cp_time, 0, node.sysctl_size); 1308 1309 for (CPU_INFO_FOREACH(cii, ci)) { 1310 if (n <= 0) { 1311 for (i = 0; i < CPUSTATES; i++) { 1312 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1313 } 1314 } 1315 /* 1316 * if a specific processor was requested and we just 1317 * did it, we're done here 1318 */ 1319 if (n == 0) 1320 break; 1321 /* 1322 * if doing "all", skip to next cp_time set for next processor 1323 */ 1324 if (n == -2) 1325 cp_time += CPUSTATES; 1326 /* 1327 * if we're doing a specific processor, we're one 1328 * processor closer 1329 */ 1330 if (n > 0) 1331 n--; 1332 } 1333 1334 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1335 kmem_free(node.sysctl_data, node.sysctl_size); 1336 return (error); 1337 } 1338 1339 #if NPTY > 0 1340 /* 1341 * sysctl helper routine for kern.maxptys. Ensures that any new value 1342 * is acceptable to the pty subsystem. 1343 */ 1344 static int 1345 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1346 { 1347 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1348 int error, xmax; 1349 struct sysctlnode node; 1350 1351 /* get current value of maxptys */ 1352 xmax = pty_maxptys(0, 0); 1353 1354 node = *rnode; 1355 node.sysctl_data = &xmax; 1356 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1357 if (error || newp == NULL) 1358 return (error); 1359 1360 if (xmax != pty_maxptys(xmax, 1)) 1361 return (EINVAL); 1362 1363 return (0); 1364 } 1365 #endif /* NPTY > 0 */ 1366 1367 /* 1368 * sysctl helper routine for kern.sbmax. Basically just ensures that 1369 * any new value is not too small. 1370 */ 1371 static int 1372 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1373 { 1374 int error, new_sbmax; 1375 struct sysctlnode node; 1376 1377 new_sbmax = sb_max; 1378 node = *rnode; 1379 node.sysctl_data = &new_sbmax; 1380 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1381 if (error || newp == NULL) 1382 return (error); 1383 1384 KERNEL_LOCK(1, NULL); 1385 error = sb_max_set(new_sbmax); 1386 KERNEL_UNLOCK_ONE(NULL); 1387 1388 return (error); 1389 } 1390 1391 /* 1392 * sysctl helper routine for kern.urandom node. Picks a random number 1393 * for you. 1394 */ 1395 static int 1396 sysctl_kern_urnd(SYSCTLFN_ARGS) 1397 { 1398 #if NRND > 0 1399 int v, rv; 1400 1401 KERNEL_LOCK(1, NULL); 1402 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1403 KERNEL_UNLOCK_ONE(NULL); 1404 if (rv == sizeof(v)) { 1405 struct sysctlnode node = *rnode; 1406 node.sysctl_data = &v; 1407 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1408 } 1409 else 1410 return (EIO); /*XXX*/ 1411 #else 1412 return (EOPNOTSUPP); 1413 #endif 1414 } 1415 1416 /* 1417 * sysctl helper routine for kern.arandom node. Picks a random number 1418 * for you. 1419 */ 1420 static int 1421 sysctl_kern_arnd(SYSCTLFN_ARGS) 1422 { 1423 #if NRND > 0 1424 int error; 1425 void *v; 1426 struct sysctlnode node = *rnode; 1427 1428 if (*oldlenp == 0) 1429 return 0; 1430 if (*oldlenp > 8192) 1431 return E2BIG; 1432 1433 v = kmem_alloc(*oldlenp, KM_SLEEP); 1434 arc4randbytes(v, *oldlenp); 1435 node.sysctl_data = v; 1436 node.sysctl_size = *oldlenp; 1437 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1438 kmem_free(v, *oldlenp); 1439 return error; 1440 #else 1441 return (EOPNOTSUPP); 1442 #endif 1443 } 1444 /* 1445 * sysctl helper routine to do kern.lwp.* work. 1446 */ 1447 static int 1448 sysctl_kern_lwp(SYSCTLFN_ARGS) 1449 { 1450 struct kinfo_lwp klwp; 1451 struct proc *p; 1452 struct lwp *l2, *l3; 1453 char *where, *dp; 1454 int pid, elem_size, elem_count; 1455 int buflen, needed, error; 1456 bool gotit; 1457 1458 if (namelen == 1 && name[0] == CTL_QUERY) 1459 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1460 1461 dp = where = oldp; 1462 buflen = where != NULL ? *oldlenp : 0; 1463 error = needed = 0; 1464 1465 if (newp != NULL || namelen != 3) 1466 return (EINVAL); 1467 pid = name[0]; 1468 elem_size = name[1]; 1469 elem_count = name[2]; 1470 1471 sysctl_unlock(); 1472 if (pid == -1) { 1473 mutex_enter(proc_lock); 1474 PROCLIST_FOREACH(p, &allproc) { 1475 /* Grab a hold on the process. */ 1476 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1477 continue; 1478 } 1479 mutex_exit(proc_lock); 1480 1481 mutex_enter(p->p_lock); 1482 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1483 if (buflen >= elem_size && elem_count > 0) { 1484 lwp_lock(l2); 1485 fill_lwp(l2, &klwp); 1486 lwp_unlock(l2); 1487 mutex_exit(p->p_lock); 1488 1489 /* 1490 * Copy out elem_size, but not 1491 * larger than the size of a 1492 * struct kinfo_proc2. 1493 */ 1494 error = dcopyout(l, &klwp, dp, 1495 min(sizeof(klwp), elem_size)); 1496 if (error) { 1497 rw_exit(&p->p_reflock); 1498 goto cleanup; 1499 } 1500 mutex_enter(p->p_lock); 1501 LIST_FOREACH(l3, &p->p_lwps, 1502 l_sibling) { 1503 if (l2 == l3) 1504 break; 1505 } 1506 if (l3 == NULL) { 1507 mutex_exit(p->p_lock); 1508 rw_exit(&p->p_reflock); 1509 error = EAGAIN; 1510 goto cleanup; 1511 } 1512 dp += elem_size; 1513 buflen -= elem_size; 1514 elem_count--; 1515 } 1516 needed += elem_size; 1517 } 1518 mutex_exit(p->p_lock); 1519 1520 /* Drop reference to process. */ 1521 mutex_enter(proc_lock); 1522 rw_exit(&p->p_reflock); 1523 } 1524 mutex_exit(proc_lock); 1525 } else { 1526 mutex_enter(proc_lock); 1527 p = proc_find(pid); 1528 if (p == NULL) { 1529 error = ESRCH; 1530 mutex_exit(proc_lock); 1531 goto cleanup; 1532 } 1533 /* Grab a hold on the process. */ 1534 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1535 mutex_exit(proc_lock); 1536 if (!gotit) { 1537 error = ESRCH; 1538 goto cleanup; 1539 } 1540 1541 mutex_enter(p->p_lock); 1542 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1543 if (buflen >= elem_size && elem_count > 0) { 1544 lwp_lock(l2); 1545 fill_lwp(l2, &klwp); 1546 lwp_unlock(l2); 1547 mutex_exit(p->p_lock); 1548 /* 1549 * Copy out elem_size, but not larger than 1550 * the size of a struct kinfo_proc2. 1551 */ 1552 error = dcopyout(l, &klwp, dp, 1553 min(sizeof(klwp), elem_size)); 1554 if (error) { 1555 rw_exit(&p->p_reflock); 1556 goto cleanup; 1557 } 1558 mutex_enter(p->p_lock); 1559 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1560 if (l2 == l3) 1561 break; 1562 } 1563 if (l3 == NULL) { 1564 mutex_exit(p->p_lock); 1565 rw_exit(&p->p_reflock); 1566 error = EAGAIN; 1567 goto cleanup; 1568 } 1569 dp += elem_size; 1570 buflen -= elem_size; 1571 elem_count--; 1572 } 1573 needed += elem_size; 1574 } 1575 mutex_exit(p->p_lock); 1576 1577 /* Drop reference to process. */ 1578 rw_exit(&p->p_reflock); 1579 } 1580 1581 if (where != NULL) { 1582 *oldlenp = dp - where; 1583 if (needed > *oldlenp) { 1584 sysctl_relock(); 1585 return (ENOMEM); 1586 } 1587 } else { 1588 needed += KERN_LWPSLOP; 1589 *oldlenp = needed; 1590 } 1591 error = 0; 1592 cleanup: 1593 sysctl_relock(); 1594 return (error); 1595 } 1596 1597 /* 1598 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1599 * given value is not too large or two small, and is at least one 1600 * timer tick if not zero. 1601 */ 1602 static int 1603 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1604 { 1605 /* userland sees value in ms, internally is in ticks */ 1606 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1607 int error, timo, lsleep; 1608 struct sysctlnode node; 1609 1610 lsleep = forkfsleep * 1000 / hz; 1611 node = *rnode; 1612 node.sysctl_data = &lsleep; 1613 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1614 if (error || newp == NULL) 1615 return (error); 1616 1617 /* refuse negative values, and overly 'long time' */ 1618 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1619 return (EINVAL); 1620 1621 timo = mstohz(lsleep); 1622 1623 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1624 if (lsleep != 0 && timo == 0) 1625 forkfsleep = 1; 1626 else 1627 forkfsleep = timo; 1628 1629 return (0); 1630 } 1631 1632 /* 1633 * sysctl helper routine for kern.root_partition 1634 */ 1635 static int 1636 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1637 { 1638 int rootpart = DISKPART(rootdev); 1639 struct sysctlnode node = *rnode; 1640 1641 node.sysctl_data = &rootpart; 1642 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1643 } 1644 1645 /* 1646 * sysctl helper function for kern.drivers 1647 */ 1648 static int 1649 sysctl_kern_drivers(SYSCTLFN_ARGS) 1650 { 1651 int error; 1652 size_t buflen; 1653 struct kinfo_drivers kd; 1654 char *start, *where; 1655 const char *dname; 1656 int i; 1657 extern struct devsw_conv *devsw_conv; 1658 extern int max_devsw_convs; 1659 1660 if (newp != NULL || namelen != 0) 1661 return (EINVAL); 1662 1663 start = where = oldp; 1664 buflen = *oldlenp; 1665 if (where == NULL) { 1666 *oldlenp = max_devsw_convs * sizeof kd; 1667 return 0; 1668 } 1669 1670 /* 1671 * An array of kinfo_drivers structures 1672 */ 1673 error = 0; 1674 sysctl_unlock(); 1675 mutex_enter(&device_lock); 1676 for (i = 0; i < max_devsw_convs; i++) { 1677 dname = devsw_conv[i].d_name; 1678 if (dname == NULL) 1679 continue; 1680 if (buflen < sizeof kd) { 1681 error = ENOMEM; 1682 break; 1683 } 1684 memset(&kd, 0, sizeof(kd)); 1685 kd.d_bmajor = devsw_conv[i].d_bmajor; 1686 kd.d_cmajor = devsw_conv[i].d_cmajor; 1687 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1688 mutex_exit(&device_lock); 1689 error = dcopyout(l, &kd, where, sizeof kd); 1690 mutex_enter(&device_lock); 1691 if (error != 0) 1692 break; 1693 buflen -= sizeof kd; 1694 where += sizeof kd; 1695 } 1696 mutex_exit(&device_lock); 1697 sysctl_relock(); 1698 *oldlenp = where - start; 1699 return error; 1700 } 1701 1702 static int 1703 sysctl_security_setidcore(SYSCTLFN_ARGS) 1704 { 1705 int newsize, error; 1706 struct sysctlnode node; 1707 1708 node = *rnode; 1709 node.sysctl_data = &newsize; 1710 newsize = *(int *)rnode->sysctl_data; 1711 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1712 if (error || newp == NULL) 1713 return error; 1714 1715 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 1716 0, NULL, NULL, NULL)) 1717 return (EPERM); 1718 1719 *(int *)rnode->sysctl_data = newsize; 1720 1721 return 0; 1722 } 1723 1724 static int 1725 sysctl_security_setidcorename(SYSCTLFN_ARGS) 1726 { 1727 int error; 1728 char *newsetidcorename; 1729 struct sysctlnode node; 1730 1731 newsetidcorename = PNBUF_GET(); 1732 node = *rnode; 1733 node.sysctl_data = newsetidcorename; 1734 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1735 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1736 if (error || newp == NULL) { 1737 goto out; 1738 } 1739 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 1740 0, NULL, NULL, NULL)) { 1741 error = EPERM; 1742 goto out; 1743 } 1744 if (strlen(newsetidcorename) == 0) { 1745 error = EINVAL; 1746 goto out; 1747 } 1748 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1749 out: 1750 PNBUF_PUT(newsetidcorename); 1751 return error; 1752 } 1753 1754 /* 1755 * sysctl helper routine for kern.cp_id node. Maps cpus to their 1756 * cpuids. 1757 */ 1758 static int 1759 sysctl_kern_cpid(SYSCTLFN_ARGS) 1760 { 1761 struct sysctlnode node = *rnode; 1762 uint64_t *cp_id = NULL; 1763 int error, n = ncpu; 1764 struct cpu_info *ci; 1765 CPU_INFO_ITERATOR cii; 1766 1767 /* 1768 * Here you may either retrieve a single cpu id or the whole 1769 * set. The size you get back when probing depends on what 1770 * you ask for. 1771 */ 1772 switch (namelen) { 1773 case 0: 1774 node.sysctl_size = n * sizeof(uint64_t); 1775 n = -2; /* ALL */ 1776 break; 1777 case 1: 1778 if (name[0] < 0 || name[0] >= n) 1779 return (ENOENT); /* ENOSUCHPROCESSOR */ 1780 node.sysctl_size = sizeof(uint64_t); 1781 n = name[0]; 1782 /* 1783 * adjust these so that sysctl_lookup() will be happy 1784 */ 1785 name++; 1786 namelen--; 1787 break; 1788 default: 1789 return (EINVAL); 1790 } 1791 1792 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 1793 if (cp_id == NULL) 1794 return (ENOMEM); 1795 node.sysctl_data = cp_id; 1796 memset(cp_id, 0, node.sysctl_size); 1797 1798 for (CPU_INFO_FOREACH(cii, ci)) { 1799 if (n <= 0) 1800 cp_id[0] = cpu_index(ci); 1801 /* 1802 * if a specific processor was requested and we just 1803 * did it, we're done here 1804 */ 1805 if (n == 0) 1806 break; 1807 /* 1808 * if doing "all", skip to next cp_id slot for next processor 1809 */ 1810 if (n == -2) 1811 cp_id++; 1812 /* 1813 * if we're doing a specific processor, we're one 1814 * processor closer 1815 */ 1816 if (n > 0) 1817 n--; 1818 } 1819 1820 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1821 kmem_free(node.sysctl_data, node.sysctl_size); 1822 return (error); 1823 } 1824 1825 /* 1826 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 1827 * calculate on the fly taking into account integer overflow and the 1828 * current wired count. 1829 */ 1830 static int 1831 sysctl_hw_usermem(SYSCTLFN_ARGS) 1832 { 1833 u_int ui; 1834 u_quad_t uq; 1835 struct sysctlnode node; 1836 1837 node = *rnode; 1838 switch (rnode->sysctl_num) { 1839 case HW_USERMEM: 1840 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1841 ui = UINT_MAX; 1842 else 1843 ui *= PAGE_SIZE; 1844 node.sysctl_data = &ui; 1845 break; 1846 case HW_USERMEM64: 1847 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1848 node.sysctl_data = &uq; 1849 break; 1850 default: 1851 return (EINVAL); 1852 } 1853 1854 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1855 } 1856 1857 /* 1858 * sysctl helper routine for kern.cnmagic node. Pulls the old value 1859 * out, encoded, and stuffs the new value in for decoding. 1860 */ 1861 static int 1862 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 1863 { 1864 char magic[CNS_LEN]; 1865 int error; 1866 struct sysctlnode node; 1867 1868 if (oldp) 1869 cn_get_magic(magic, CNS_LEN); 1870 node = *rnode; 1871 node.sysctl_data = &magic[0]; 1872 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1873 if (error || newp == NULL) 1874 return (error); 1875 1876 return (cn_set_magic(magic)); 1877 } 1878 1879 /* 1880 * ******************************************************************** 1881 * section 3: public helper routines that are used for more than one 1882 * node 1883 * ******************************************************************** 1884 */ 1885 1886 /* 1887 * sysctl helper routine for the kern.root_device node and some ports' 1888 * machdep.root_device nodes. 1889 */ 1890 int 1891 sysctl_root_device(SYSCTLFN_ARGS) 1892 { 1893 struct sysctlnode node; 1894 1895 node = *rnode; 1896 node.sysctl_data = root_device->dv_xname; 1897 node.sysctl_size = strlen(device_xname(root_device)) + 1; 1898 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1899 } 1900 1901 /* 1902 * sysctl helper routine for kern.consdev, dependent on the current 1903 * state of the console. Also used for machdep.console_device on some 1904 * ports. 1905 */ 1906 int 1907 sysctl_consdev(SYSCTLFN_ARGS) 1908 { 1909 dev_t consdev; 1910 uint32_t oconsdev; 1911 struct sysctlnode node; 1912 1913 if (cn_tab != NULL) 1914 consdev = cn_tab->cn_dev; 1915 else 1916 consdev = NODEV; 1917 node = *rnode; 1918 switch (*oldlenp) { 1919 case sizeof(consdev): 1920 node.sysctl_data = &consdev; 1921 node.sysctl_size = sizeof(consdev); 1922 break; 1923 case sizeof(oconsdev): 1924 oconsdev = (uint32_t)consdev; 1925 node.sysctl_data = &oconsdev; 1926 node.sysctl_size = sizeof(oconsdev); 1927 break; 1928 default: 1929 return EINVAL; 1930 } 1931 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1932 } 1933 1934 /* 1935 * ******************************************************************** 1936 * section 4: support for some helpers 1937 * ******************************************************************** 1938 */ 1939 1940 1941 /* 1942 * Fill in a kinfo_lwp structure for the specified lwp. 1943 */ 1944 static void 1945 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 1946 { 1947 struct proc *p = l->l_proc; 1948 struct timeval tv; 1949 1950 KASSERT(lwp_locked(l, NULL)); 1951 1952 memset(kl, 0, sizeof(*kl)); 1953 1954 kl->l_forw = 0; 1955 kl->l_back = 0; 1956 kl->l_laddr = PTRTOUINT64(l); 1957 kl->l_addr = PTRTOUINT64(l->l_addr); 1958 kl->l_stat = l->l_stat; 1959 kl->l_lid = l->l_lid; 1960 kl->l_flag = L_INMEM; 1961 kl->l_flag |= sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 1962 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 1963 1964 kl->l_swtime = l->l_swtime; 1965 kl->l_slptime = l->l_slptime; 1966 if (l->l_stat == LSONPROC) 1967 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 1968 else 1969 kl->l_schedflags = 0; 1970 kl->l_priority = lwp_eprio(l); 1971 kl->l_usrpri = l->l_priority; 1972 if (l->l_wchan) 1973 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 1974 kl->l_wchan = PTRTOUINT64(l->l_wchan); 1975 kl->l_cpuid = cpu_index(l->l_cpu); 1976 bintime2timeval(&l->l_rtime, &tv); 1977 kl->l_rtime_sec = tv.tv_sec; 1978 kl->l_rtime_usec = tv.tv_usec; 1979 kl->l_cpticks = l->l_cpticks; 1980 kl->l_pctcpu = l->l_pctcpu; 1981 kl->l_pid = p->p_pid; 1982 if (l->l_name == NULL) 1983 kl->l_name[0] = '\0'; 1984 else 1985 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 1986 } 1987
Indexes created Wed Oct 01 15:09:59 GMT 2025