init_sysctl.c revision 1.186.2.1
1 /* $NetBSD: init_sysctl.c,v 1.186.2.1 2013/03/14 16:33:09 riz 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 1.186.2.1 2013/03/14 16:33:09 riz 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 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/sysctl.h> 45 #include <sys/cpu.h> 46 #include <sys/errno.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/unistd.h> 50 #include <sys/disklabel.h> 51 #include <sys/cprng.h> 52 #include <sys/vnode.h> 53 #include <sys/mount.h> 54 #include <sys/namei.h> 55 #include <sys/msgbuf.h> 56 #include <dev/cons.h> 57 #include <sys/socketvar.h> 58 #include <sys/file.h> 59 #include <sys/filedesc.h> 60 #include <sys/tty.h> 61 #include <sys/kmem.h> 62 #include <sys/resource.h> 63 #include <sys/resourcevar.h> 64 #include <sys/exec.h> 65 #include <sys/conf.h> 66 #include <sys/device.h> 67 #include <sys/stat.h> 68 #include <sys/kauth.h> 69 #include <sys/ktrace.h> 70 #include <sys/ksem.h> 71 72 #ifdef KERN_SA 73 #include <sys/sa.h> 74 #endif 75 76 #include <sys/cpu.h> 77 78 #if defined(MODULAR) || defined(P1003_1B_SEMAPHORE) 79 int posix_semaphores = 200112; 80 #else 81 int posix_semaphores; 82 #endif 83 84 int security_setidcore_dump; 85 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 86 uid_t security_setidcore_owner = 0; 87 gid_t security_setidcore_group = 0; 88 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 89 90 static const u_int sysctl_flagmap[] = { 91 PK_ADVLOCK, P_ADVLOCK, 92 PK_EXEC, P_EXEC, 93 PK_NOCLDWAIT, P_NOCLDWAIT, 94 PK_32, P_32, 95 PK_CLDSIGIGN, P_CLDSIGIGN, 96 PK_SUGID, P_SUGID, 97 0 98 }; 99 100 static const u_int sysctl_sflagmap[] = { 101 PS_NOCLDSTOP, P_NOCLDSTOP, 102 PS_WEXIT, P_WEXIT, 103 PS_STOPFORK, P_STOPFORK, 104 PS_STOPEXEC, P_STOPEXEC, 105 PS_STOPEXIT, P_STOPEXIT, 106 0 107 }; 108 109 static const u_int sysctl_slflagmap[] = { 110 PSL_TRACED, P_TRACED, 111 PSL_FSTRACE, P_FSTRACE, 112 PSL_CHTRACED, P_CHTRACED, 113 PSL_SYSCALL, P_SYSCALL, 114 0 115 }; 116 117 static const u_int sysctl_lflagmap[] = { 118 PL_CONTROLT, P_CONTROLT, 119 PL_PPWAIT, P_PPWAIT, 120 0 121 }; 122 123 static const u_int sysctl_stflagmap[] = { 124 PST_PROFIL, P_PROFIL, 125 0 126 127 }; 128 129 static const u_int sysctl_lwpprflagmap[] = { 130 LPR_DETACHED, L_DETACHED, 131 0 132 }; 133 134 /* 135 * try over estimating by 5 procs/lwps 136 */ 137 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 138 139 static int dcopyout(struct lwp *, const void *, void *, size_t); 140 141 static int 142 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 143 { 144 int error; 145 146 error = copyout(kaddr, uaddr, len); 147 ktrmibio(-1, UIO_READ, uaddr, len, error); 148 149 return error; 150 } 151 152 #ifdef DIAGNOSTIC 153 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 154 #endif 155 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 156 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 157 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 158 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 159 static int sysctl_setlen(SYSCTLFN_PROTO); 160 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 161 static int sysctl_msgbuf(SYSCTLFN_PROTO); 162 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 163 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 164 #if NPTY > 0 165 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 166 #endif /* NPTY > 0 */ 167 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 168 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 169 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 170 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 171 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 172 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 173 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 174 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 175 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 176 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 177 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 178 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 179 180 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 181 182 /* 183 * ******************************************************************** 184 * section 1: setup routines 185 * ******************************************************************** 186 * These functions are stuffed into a link set for sysctl setup 187 * functions. They're never called or referenced from anywhere else. 188 * ******************************************************************** 189 */ 190 191 /* 192 * this setup routine is a replacement for kern_sysctl() 193 */ 194 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 195 { 196 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 197 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 198 extern int dumponpanic; /* defined in kern/subr_prf.c */ 199 const struct sysctlnode *rnode; 200 201 sysctl_createv(clog, 0, NULL, NULL, 202 CTLFLAG_PERMANENT, 203 CTLTYPE_NODE, "kern", NULL, 204 NULL, 0, NULL, 0, 205 CTL_KERN, CTL_EOL); 206 207 sysctl_createv(clog, 0, NULL, NULL, 208 CTLFLAG_PERMANENT, 209 CTLTYPE_STRING, "ostype", 210 SYSCTL_DESCR("Operating system type"), 211 NULL, 0, __UNCONST(&ostype), 0, 212 CTL_KERN, KERN_OSTYPE, CTL_EOL); 213 sysctl_createv(clog, 0, NULL, NULL, 214 CTLFLAG_PERMANENT, 215 CTLTYPE_STRING, "osrelease", 216 SYSCTL_DESCR("Operating system release"), 217 NULL, 0, __UNCONST(&osrelease), 0, 218 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 219 sysctl_createv(clog, 0, NULL, NULL, 220 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 221 CTLTYPE_INT, "osrevision", 222 SYSCTL_DESCR("Operating system revision"), 223 NULL, __NetBSD_Version__, NULL, 0, 224 CTL_KERN, KERN_OSREV, CTL_EOL); 225 sysctl_createv(clog, 0, NULL, NULL, 226 CTLFLAG_PERMANENT, 227 CTLTYPE_STRING, "version", 228 SYSCTL_DESCR("Kernel version"), 229 NULL, 0, __UNCONST(&version), 0, 230 CTL_KERN, KERN_VERSION, CTL_EOL); 231 sysctl_createv(clog, 0, NULL, NULL, 232 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 233 CTLTYPE_INT, "maxvnodes", 234 SYSCTL_DESCR("Maximum number of vnodes"), 235 sysctl_kern_maxvnodes, 0, NULL, 0, 236 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 237 sysctl_createv(clog, 0, NULL, NULL, 238 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 239 CTLTYPE_INT, "maxproc", 240 SYSCTL_DESCR("Maximum number of simultaneous processes"), 241 sysctl_kern_maxproc, 0, NULL, 0, 242 CTL_KERN, KERN_MAXPROC, CTL_EOL); 243 sysctl_createv(clog, 0, NULL, NULL, 244 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 245 CTLTYPE_INT, "maxfiles", 246 SYSCTL_DESCR("Maximum number of open files"), 247 NULL, 0, &maxfiles, 0, 248 CTL_KERN, KERN_MAXFILES, CTL_EOL); 249 sysctl_createv(clog, 0, NULL, NULL, 250 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 251 CTLTYPE_INT, "argmax", 252 SYSCTL_DESCR("Maximum number of bytes of arguments to " 253 "execve(2)"), 254 NULL, ARG_MAX, NULL, 0, 255 CTL_KERN, KERN_ARGMAX, CTL_EOL); 256 sysctl_createv(clog, 0, NULL, NULL, 257 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 258 CTLTYPE_STRING, "hostname", 259 SYSCTL_DESCR("System hostname"), 260 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 261 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 262 sysctl_createv(clog, 0, NULL, NULL, 263 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 264 CTLTYPE_INT, "hostid", 265 SYSCTL_DESCR("System host ID number"), 266 sysctl_kern_hostid, 0, NULL, 0, 267 CTL_KERN, KERN_HOSTID, CTL_EOL); 268 sysctl_createv(clog, 0, NULL, NULL, 269 CTLFLAG_PERMANENT, 270 CTLTYPE_STRUCT, "clockrate", 271 SYSCTL_DESCR("Kernel clock rates"), 272 sysctl_kern_clockrate, 0, NULL, 273 sizeof(struct clockinfo), 274 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 275 sysctl_createv(clog, 0, NULL, NULL, 276 CTLFLAG_PERMANENT, 277 CTLTYPE_INT, "hardclock_ticks", 278 SYSCTL_DESCR("Number of hardclock ticks"), 279 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 280 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 281 sysctl_createv(clog, 0, NULL, NULL, 282 CTLFLAG_PERMANENT, 283 CTLTYPE_STRUCT, "vnode", 284 SYSCTL_DESCR("System vnode table"), 285 sysctl_kern_vnode, 0, NULL, 0, 286 CTL_KERN, KERN_VNODE, CTL_EOL); 287 #ifndef GPROF 288 sysctl_createv(clog, 0, NULL, NULL, 289 CTLFLAG_PERMANENT, 290 CTLTYPE_NODE, "profiling", 291 SYSCTL_DESCR("Profiling information (not available)"), 292 sysctl_notavail, 0, NULL, 0, 293 CTL_KERN, KERN_PROF, CTL_EOL); 294 #endif 295 sysctl_createv(clog, 0, NULL, NULL, 296 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 297 CTLTYPE_INT, "posix1version", 298 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 299 "with which the operating system attempts " 300 "to comply"), 301 NULL, _POSIX_VERSION, NULL, 0, 302 CTL_KERN, KERN_POSIX1, CTL_EOL); 303 sysctl_createv(clog, 0, NULL, NULL, 304 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 305 CTLTYPE_INT, "ngroups", 306 SYSCTL_DESCR("Maximum number of supplemental groups"), 307 NULL, NGROUPS_MAX, NULL, 0, 308 CTL_KERN, KERN_NGROUPS, CTL_EOL); 309 sysctl_createv(clog, 0, NULL, NULL, 310 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 311 CTLTYPE_INT, "job_control", 312 SYSCTL_DESCR("Whether job control is available"), 313 NULL, 1, NULL, 0, 314 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 315 sysctl_createv(clog, 0, NULL, NULL, 316 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 317 CTLTYPE_INT, "saved_ids", 318 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 319 "available"), NULL, 320 #ifdef _POSIX_SAVED_IDS 321 1, 322 #else /* _POSIX_SAVED_IDS */ 323 0, 324 #endif /* _POSIX_SAVED_IDS */ 325 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 326 sysctl_createv(clog, 0, NULL, NULL, 327 CTLFLAG_PERMANENT|CTLFLAG_HEX, 328 CTLTYPE_INT, "boothowto", 329 SYSCTL_DESCR("Flags from boot loader"), 330 NULL, 0, &boothowto, sizeof(boothowto), 331 CTL_KERN, CTL_CREATE, CTL_EOL); 332 sysctl_createv(clog, 0, NULL, NULL, 333 CTLFLAG_PERMANENT, 334 CTLTYPE_STRUCT, "boottime", 335 SYSCTL_DESCR("System boot time"), 336 NULL, 0, &boottime, sizeof(boottime), 337 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 338 sysctl_createv(clog, 0, NULL, NULL, 339 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 340 CTLTYPE_STRING, "domainname", 341 SYSCTL_DESCR("YP domain name"), 342 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 343 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 344 sysctl_createv(clog, 0, NULL, NULL, 345 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 346 CTLTYPE_INT, "maxpartitions", 347 SYSCTL_DESCR("Maximum number of partitions allowed per " 348 "disk"), 349 NULL, MAXPARTITIONS, NULL, 0, 350 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 351 sysctl_createv(clog, 0, NULL, NULL, 352 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 353 CTLTYPE_INT, "rawpartition", 354 SYSCTL_DESCR("Raw partition of a disk"), 355 NULL, RAW_PART, NULL, 0, 356 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 357 sysctl_createv(clog, 0, NULL, NULL, 358 CTLFLAG_PERMANENT, 359 CTLTYPE_STRUCT, "timex", NULL, 360 sysctl_notavail, 0, NULL, 0, 361 CTL_KERN, KERN_TIMEX, CTL_EOL); 362 sysctl_createv(clog, 0, NULL, NULL, 363 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 364 CTLTYPE_INT, "rtc_offset", 365 SYSCTL_DESCR("Offset of real time clock from UTC in " 366 "minutes"), 367 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 368 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 369 sysctl_createv(clog, 0, NULL, NULL, 370 CTLFLAG_PERMANENT, 371 CTLTYPE_STRING, "root_device", 372 SYSCTL_DESCR("Name of the root device"), 373 sysctl_root_device, 0, NULL, 0, 374 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 375 sysctl_createv(clog, 0, NULL, NULL, 376 CTLFLAG_PERMANENT, 377 CTLTYPE_INT, "msgbufsize", 378 SYSCTL_DESCR("Size of the kernel message buffer"), 379 sysctl_msgbuf, 0, NULL, 0, 380 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 381 sysctl_createv(clog, 0, NULL, NULL, 382 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 383 CTLTYPE_INT, "fsync", 384 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 385 "Synchronization Option is available on " 386 "this system"), 387 NULL, 1, NULL, 0, 388 CTL_KERN, KERN_FSYNC, CTL_EOL); 389 sysctl_createv(clog, 0, NULL, NULL, 390 CTLFLAG_PERMANENT, 391 CTLTYPE_NODE, "ipc", 392 SYSCTL_DESCR("SysV IPC options"), 393 NULL, 0, NULL, 0, 394 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 395 sysctl_createv(clog, 0, NULL, NULL, 396 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 397 CTLTYPE_INT, "sysvmsg", 398 SYSCTL_DESCR("System V style message support available"), 399 NULL, 400 #ifdef SYSVMSG 401 1, 402 #else /* SYSVMSG */ 403 0, 404 #endif /* SYSVMSG */ 405 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 406 sysctl_createv(clog, 0, NULL, NULL, 407 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 408 CTLTYPE_INT, "sysvsem", 409 SYSCTL_DESCR("System V style semaphore support " 410 "available"), NULL, 411 #ifdef SYSVSEM 412 1, 413 #else /* SYSVSEM */ 414 0, 415 #endif /* SYSVSEM */ 416 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 417 sysctl_createv(clog, 0, NULL, NULL, 418 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 419 CTLTYPE_INT, "sysvshm", 420 SYSCTL_DESCR("System V style shared memory support " 421 "available"), NULL, 422 #ifdef SYSVSHM 423 1, 424 #else /* SYSVSHM */ 425 0, 426 #endif /* SYSVSHM */ 427 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 428 sysctl_createv(clog, 0, NULL, NULL, 429 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 430 CTLTYPE_INT, "synchronized_io", 431 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 432 "I/O Option is available on this system"), 433 NULL, 1, NULL, 0, 434 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 435 sysctl_createv(clog, 0, NULL, NULL, 436 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 437 CTLTYPE_INT, "iov_max", 438 SYSCTL_DESCR("Maximum number of iovec structures per " 439 "process"), 440 NULL, IOV_MAX, NULL, 0, 441 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 442 sysctl_createv(clog, 0, NULL, NULL, 443 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 444 CTLTYPE_INT, "mapped_files", 445 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 446 "Files Option is available on this system"), 447 NULL, 1, NULL, 0, 448 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 449 sysctl_createv(clog, 0, NULL, NULL, 450 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 451 CTLTYPE_INT, "memlock", 452 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 453 "Locking Option is available on this " 454 "system"), 455 NULL, 1, NULL, 0, 456 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 457 sysctl_createv(clog, 0, NULL, NULL, 458 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 459 CTLTYPE_INT, "memlock_range", 460 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 461 "Locking Option is available on this " 462 "system"), 463 NULL, 1, NULL, 0, 464 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 465 sysctl_createv(clog, 0, NULL, NULL, 466 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 467 CTLTYPE_INT, "memory_protection", 468 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 469 "Protection Option is available on this " 470 "system"), 471 NULL, 1, NULL, 0, 472 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 473 sysctl_createv(clog, 0, NULL, NULL, 474 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 475 CTLTYPE_INT, "login_name_max", 476 SYSCTL_DESCR("Maximum login name length"), 477 NULL, LOGIN_NAME_MAX, NULL, 0, 478 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 479 sysctl_createv(clog, 0, NULL, NULL, 480 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 481 CTLTYPE_STRING, "defcorename", 482 SYSCTL_DESCR("Default core file name"), 483 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 484 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 485 sysctl_createv(clog, 0, NULL, NULL, 486 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 487 CTLTYPE_INT, "logsigexit", 488 SYSCTL_DESCR("Log process exit when caused by signals"), 489 NULL, 0, &kern_logsigexit, 0, 490 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 491 sysctl_createv(clog, 0, NULL, NULL, 492 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 493 CTLTYPE_INT, "fscale", 494 SYSCTL_DESCR("Kernel fixed-point scale factor"), 495 NULL, FSCALE, NULL, 0, 496 CTL_KERN, KERN_FSCALE, CTL_EOL); 497 sysctl_createv(clog, 0, NULL, NULL, 498 CTLFLAG_PERMANENT, 499 CTLTYPE_INT, "ccpu", 500 SYSCTL_DESCR("Scheduler exponential decay value"), 501 NULL, 0, &ccpu, 0, 502 CTL_KERN, KERN_CCPU, CTL_EOL); 503 sysctl_createv(clog, 0, NULL, NULL, 504 CTLFLAG_PERMANENT, 505 CTLTYPE_STRUCT, "cp_time", 506 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 507 sysctl_kern_cptime, 0, NULL, 0, 508 CTL_KERN, KERN_CP_TIME, CTL_EOL); 509 sysctl_createv(clog, 0, NULL, NULL, 510 CTLFLAG_PERMANENT, 511 CTLTYPE_INT, "msgbuf", 512 SYSCTL_DESCR("Kernel message buffer"), 513 sysctl_msgbuf, 0, NULL, 0, 514 CTL_KERN, KERN_MSGBUF, CTL_EOL); 515 sysctl_createv(clog, 0, NULL, NULL, 516 CTLFLAG_PERMANENT, 517 CTLTYPE_STRUCT, "consdev", 518 SYSCTL_DESCR("Console device"), 519 sysctl_consdev, 0, NULL, sizeof(dev_t), 520 CTL_KERN, KERN_CONSDEV, CTL_EOL); 521 #if NPTY > 0 522 sysctl_createv(clog, 0, NULL, NULL, 523 CTLFLAG_PERMANENT, 524 CTLTYPE_INT, "maxptys", 525 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 526 sysctl_kern_maxptys, 0, NULL, 0, 527 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 528 #endif /* NPTY > 0 */ 529 sysctl_createv(clog, 0, NULL, NULL, 530 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 531 CTLTYPE_INT, "maxphys", 532 SYSCTL_DESCR("Maximum raw I/O transfer size"), 533 NULL, MAXPHYS, NULL, 0, 534 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 535 sysctl_createv(clog, 0, NULL, NULL, 536 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 537 CTLTYPE_INT, "sbmax", 538 SYSCTL_DESCR("Maximum socket buffer size"), 539 sysctl_kern_sbmax, 0, NULL, 0, 540 CTL_KERN, KERN_SBMAX, CTL_EOL); 541 sysctl_createv(clog, 0, NULL, NULL, 542 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 543 CTLTYPE_INT, "monotonic_clock", 544 SYSCTL_DESCR("Implementation version of the POSIX " 545 "1003.1b Monotonic Clock Option"), 546 /* XXX _POSIX_VERSION */ 547 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 548 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 549 sysctl_createv(clog, 0, NULL, NULL, 550 CTLFLAG_PERMANENT, 551 CTLTYPE_INT, "urandom", 552 SYSCTL_DESCR("Random integer value"), 553 sysctl_kern_urnd, 0, NULL, 0, 554 CTL_KERN, KERN_URND, CTL_EOL); 555 sysctl_createv(clog, 0, NULL, NULL, 556 CTLFLAG_PERMANENT, 557 CTLTYPE_INT, "arandom", 558 SYSCTL_DESCR("n bytes of random data"), 559 sysctl_kern_arnd, 0, NULL, 0, 560 CTL_KERN, KERN_ARND, CTL_EOL); 561 sysctl_createv(clog, 0, NULL, NULL, 562 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 563 CTLTYPE_INT, "labelsector", 564 SYSCTL_DESCR("Sector number containing the disklabel"), 565 NULL, LABELSECTOR, NULL, 0, 566 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 567 sysctl_createv(clog, 0, NULL, NULL, 568 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 569 CTLTYPE_INT, "labeloffset", 570 SYSCTL_DESCR("Offset of the disklabel within the " 571 "sector"), 572 NULL, LABELOFFSET, NULL, 0, 573 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 574 sysctl_createv(clog, 0, NULL, NULL, 575 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 576 CTLTYPE_INT, "labelusesmbr", 577 SYSCTL_DESCR("disklabel is inside MBR partition"), 578 NULL, LABELUSESMBR, NULL, 0, 579 CTL_KERN, CTL_CREATE, CTL_EOL); 580 sysctl_createv(clog, 0, NULL, NULL, 581 CTLFLAG_PERMANENT, 582 CTLTYPE_NODE, "lwp", 583 SYSCTL_DESCR("System-wide LWP information"), 584 sysctl_kern_lwp, 0, NULL, 0, 585 CTL_KERN, KERN_LWP, CTL_EOL); 586 sysctl_createv(clog, 0, NULL, NULL, 587 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 588 CTLTYPE_INT, "forkfsleep", 589 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 590 "to process limits"), 591 sysctl_kern_forkfsleep, 0, NULL, 0, 592 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 593 sysctl_createv(clog, 0, NULL, NULL, 594 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 595 CTLTYPE_INT, "posix_threads", 596 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 597 "Threads option to which the system " 598 "attempts to conform"), 599 /* XXX _POSIX_VERSION */ 600 NULL, _POSIX_THREADS, NULL, 0, 601 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 602 sysctl_createv(clog, 0, NULL, NULL, 603 CTLFLAG_PERMANENT, 604 CTLTYPE_INT, "posix_semaphores", 605 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 606 "Semaphores option to which the system " 607 "attempts to conform"), NULL, 608 0, &posix_semaphores, 609 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 610 sysctl_createv(clog, 0, NULL, NULL, 611 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 612 CTLTYPE_INT, "posix_barriers", 613 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 614 "Barriers option to which the system " 615 "attempts to conform"), 616 /* XXX _POSIX_VERSION */ 617 NULL, _POSIX_BARRIERS, NULL, 0, 618 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 619 sysctl_createv(clog, 0, NULL, NULL, 620 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 621 CTLTYPE_INT, "posix_timers", 622 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 623 "Timers option to which the system " 624 "attempts to conform"), 625 /* XXX _POSIX_VERSION */ 626 NULL, _POSIX_TIMERS, NULL, 0, 627 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 628 sysctl_createv(clog, 0, NULL, NULL, 629 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 630 CTLTYPE_INT, "posix_spin_locks", 631 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 632 "Locks option to which the system attempts " 633 "to conform"), 634 /* XXX _POSIX_VERSION */ 635 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 636 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 637 sysctl_createv(clog, 0, NULL, NULL, 638 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 639 CTLTYPE_INT, "posix_reader_writer_locks", 640 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 641 "Read-Write Locks option to which the " 642 "system attempts to conform"), 643 /* XXX _POSIX_VERSION */ 644 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 645 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 646 sysctl_createv(clog, 0, NULL, NULL, 647 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 648 CTLTYPE_INT, "dump_on_panic", 649 SYSCTL_DESCR("Perform a crash dump on system panic"), 650 NULL, 0, &dumponpanic, 0, 651 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 652 #ifdef DIAGNOSTIC 653 sysctl_createv(clog, 0, NULL, NULL, 654 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 655 CTLTYPE_INT, "panic_now", 656 SYSCTL_DESCR("Trigger a panic"), 657 sysctl_kern_trigger_panic, 0, NULL, 0, 658 CTL_KERN, CTL_CREATE, CTL_EOL); 659 #endif 660 sysctl_createv(clog, 0, NULL, NULL, 661 CTLFLAG_PERMANENT, 662 CTLTYPE_INT, "root_partition", 663 SYSCTL_DESCR("Root partition on the root device"), 664 sysctl_kern_root_partition, 0, NULL, 0, 665 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 666 sysctl_createv(clog, 0, NULL, NULL, 667 CTLFLAG_PERMANENT, 668 CTLTYPE_STRUCT, "drivers", 669 SYSCTL_DESCR("List of all drivers with block and " 670 "character device numbers"), 671 sysctl_kern_drivers, 0, NULL, 0, 672 CTL_KERN, KERN_DRIVERS, CTL_EOL); 673 sysctl_createv(clog, 0, NULL, NULL, 674 CTLFLAG_PERMANENT, 675 CTLTYPE_STRUCT, "cp_id", 676 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 677 sysctl_kern_cpid, 0, NULL, 0, 678 CTL_KERN, KERN_CP_ID, CTL_EOL); 679 sysctl_createv(clog, 0, NULL, &rnode, 680 CTLFLAG_PERMANENT, 681 CTLTYPE_NODE, "coredump", 682 SYSCTL_DESCR("Coredump settings."), 683 NULL, 0, NULL, 0, 684 CTL_KERN, CTL_CREATE, CTL_EOL); 685 sysctl_createv(clog, 0, &rnode, &rnode, 686 CTLFLAG_PERMANENT, 687 CTLTYPE_NODE, "setid", 688 SYSCTL_DESCR("Set-id processes' coredump settings."), 689 NULL, 0, NULL, 0, 690 CTL_CREATE, CTL_EOL); 691 sysctl_createv(clog, 0, &rnode, NULL, 692 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 693 CTLTYPE_INT, "dump", 694 SYSCTL_DESCR("Allow set-id processes to dump core."), 695 sysctl_security_setidcore, 0, &security_setidcore_dump, 696 sizeof(security_setidcore_dump), 697 CTL_CREATE, CTL_EOL); 698 sysctl_createv(clog, 0, &rnode, NULL, 699 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 700 CTLTYPE_STRING, "path", 701 SYSCTL_DESCR("Path pattern for set-id coredumps."), 702 sysctl_security_setidcorename, 0, 703 &security_setidcore_path, 704 sizeof(security_setidcore_path), 705 CTL_CREATE, CTL_EOL); 706 sysctl_createv(clog, 0, &rnode, NULL, 707 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 708 CTLTYPE_INT, "owner", 709 SYSCTL_DESCR("Owner id for set-id processes' cores."), 710 sysctl_security_setidcore, 0, &security_setidcore_owner, 711 0, 712 CTL_CREATE, CTL_EOL); 713 sysctl_createv(clog, 0, &rnode, NULL, 714 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 715 CTLTYPE_INT, "group", 716 SYSCTL_DESCR("Group id for set-id processes' cores."), 717 sysctl_security_setidcore, 0, &security_setidcore_group, 718 0, 719 CTL_CREATE, CTL_EOL); 720 sysctl_createv(clog, 0, &rnode, NULL, 721 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 722 CTLTYPE_INT, "mode", 723 SYSCTL_DESCR("Mode for set-id processes' cores."), 724 sysctl_security_setidcore, 0, &security_setidcore_mode, 725 0, 726 CTL_CREATE, CTL_EOL); 727 sysctl_createv(clog, 0, NULL, NULL, 728 #ifndef KERN_SA 729 CTLFLAG_IMMEDIATE| 730 #endif 731 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 732 CTLTYPE_INT, "no_sa_support", 733 SYSCTL_DESCR("0 if the kernel supports SA, otherwise " 734 "it doesn't"), 735 NULL, 736 #ifndef KERN_SA 737 1, NULL, 738 #else 739 0, &sa_system_disabled, 740 #endif 741 0, 742 CTL_KERN, CTL_CREATE, CTL_EOL); 743 /* kern.posix. */ 744 sysctl_createv(clog, 0, NULL, &rnode, 745 CTLFLAG_PERMANENT, 746 CTLTYPE_NODE, "posix", 747 SYSCTL_DESCR("POSIX options"), 748 NULL, 0, NULL, 0, 749 CTL_KERN, CTL_CREATE, CTL_EOL); 750 sysctl_createv(clog, 0, &rnode, NULL, 751 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 752 CTLTYPE_INT, "semmax", 753 SYSCTL_DESCR("Maximal number of semaphores"), 754 NULL, 0, &ksem_max, 0, 755 CTL_CREATE, CTL_EOL); 756 } 757 758 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 759 { 760 u_int u; 761 u_quad_t q; 762 763 sysctl_createv(clog, 0, NULL, NULL, 764 CTLFLAG_PERMANENT, 765 CTLTYPE_NODE, "hw", NULL, 766 NULL, 0, NULL, 0, 767 CTL_HW, CTL_EOL); 768 769 sysctl_createv(clog, 0, NULL, NULL, 770 CTLFLAG_PERMANENT, 771 CTLTYPE_STRING, "machine", 772 SYSCTL_DESCR("Machine class"), 773 NULL, 0, machine, 0, 774 CTL_HW, HW_MACHINE, CTL_EOL); 775 sysctl_createv(clog, 0, NULL, NULL, 776 CTLFLAG_PERMANENT, 777 CTLTYPE_STRING, "model", 778 SYSCTL_DESCR("Machine model"), 779 NULL, 0, cpu_model, 0, 780 CTL_HW, HW_MODEL, CTL_EOL); 781 sysctl_createv(clog, 0, NULL, NULL, 782 CTLFLAG_PERMANENT, 783 CTLTYPE_INT, "ncpu", 784 SYSCTL_DESCR("Number of CPUs configured"), 785 NULL, 0, &ncpu, 0, 786 CTL_HW, HW_NCPU, CTL_EOL); 787 sysctl_createv(clog, 0, NULL, NULL, 788 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 789 CTLTYPE_INT, "byteorder", 790 SYSCTL_DESCR("System byte order"), 791 NULL, BYTE_ORDER, NULL, 0, 792 CTL_HW, HW_BYTEORDER, CTL_EOL); 793 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 794 UINT_MAX : physmem * PAGE_SIZE; 795 sysctl_createv(clog, 0, NULL, NULL, 796 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 797 CTLTYPE_INT, "physmem", 798 SYSCTL_DESCR("Bytes of physical memory"), 799 NULL, u, NULL, 0, 800 CTL_HW, HW_PHYSMEM, CTL_EOL); 801 sysctl_createv(clog, 0, NULL, NULL, 802 CTLFLAG_PERMANENT, 803 CTLTYPE_INT, "usermem", 804 SYSCTL_DESCR("Bytes of non-kernel memory"), 805 sysctl_hw_usermem, 0, NULL, 0, 806 CTL_HW, HW_USERMEM, CTL_EOL); 807 sysctl_createv(clog, 0, NULL, NULL, 808 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 809 CTLTYPE_INT, "pagesize", 810 SYSCTL_DESCR("Software page size"), 811 NULL, PAGE_SIZE, NULL, 0, 812 CTL_HW, HW_PAGESIZE, CTL_EOL); 813 sysctl_createv(clog, 0, NULL, NULL, 814 CTLFLAG_PERMANENT, 815 CTLTYPE_STRING, "machine_arch", 816 SYSCTL_DESCR("Machine CPU class"), 817 NULL, 0, machine_arch, 0, 818 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 819 sysctl_createv(clog, 0, NULL, NULL, 820 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 821 CTLTYPE_INT, "alignbytes", 822 SYSCTL_DESCR("Alignment constraint for all possible " 823 "data types"), 824 NULL, ALIGNBYTES, NULL, 0, 825 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 826 sysctl_createv(clog, 0, NULL, NULL, 827 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 828 CTLTYPE_STRING, "cnmagic", 829 SYSCTL_DESCR("Console magic key sequence"), 830 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 831 CTL_HW, HW_CNMAGIC, CTL_EOL); 832 q = (u_quad_t)physmem * PAGE_SIZE; 833 sysctl_createv(clog, 0, NULL, NULL, 834 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 835 CTLTYPE_QUAD, "physmem64", 836 SYSCTL_DESCR("Bytes of physical memory"), 837 NULL, q, NULL, 0, 838 CTL_HW, HW_PHYSMEM64, CTL_EOL); 839 sysctl_createv(clog, 0, NULL, NULL, 840 CTLFLAG_PERMANENT, 841 CTLTYPE_QUAD, "usermem64", 842 SYSCTL_DESCR("Bytes of non-kernel memory"), 843 sysctl_hw_usermem, 0, NULL, 0, 844 CTL_HW, HW_USERMEM64, CTL_EOL); 845 sysctl_createv(clog, 0, NULL, NULL, 846 CTLFLAG_PERMANENT, 847 CTLTYPE_INT, "ncpuonline", 848 SYSCTL_DESCR("Number of CPUs online"), 849 NULL, 0, &ncpuonline, 0, 850 CTL_HW, HW_NCPUONLINE, CTL_EOL); 851 } 852 853 #ifdef DEBUG 854 /* 855 * Debugging related system variables. 856 */ 857 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 858 struct ctldebug debug5, debug6, debug7, debug8, debug9; 859 struct ctldebug debug10, debug11, debug12, debug13, debug14; 860 struct ctldebug debug15, debug16, debug17, debug18, debug19; 861 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 862 &debug0, &debug1, &debug2, &debug3, &debug4, 863 &debug5, &debug6, &debug7, &debug8, &debug9, 864 &debug10, &debug11, &debug12, &debug13, &debug14, 865 &debug15, &debug16, &debug17, &debug18, &debug19, 866 }; 867 868 /* 869 * this setup routine is a replacement for debug_sysctl() 870 * 871 * note that it creates several nodes per defined debug variable 872 */ 873 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 874 { 875 struct ctldebug *cdp; 876 char nodename[20]; 877 int i; 878 879 /* 880 * two ways here: 881 * 882 * the "old" way (debug.name -> value) which was emulated by 883 * the sysctl(8) binary 884 * 885 * the new way, which the sysctl(8) binary was actually using 886 887 node debug 888 node debug.0 889 string debug.0.name 890 int debug.0.value 891 int debug.name 892 893 */ 894 895 sysctl_createv(clog, 0, NULL, NULL, 896 CTLFLAG_PERMANENT, 897 CTLTYPE_NODE, "debug", NULL, 898 NULL, 0, NULL, 0, 899 CTL_DEBUG, CTL_EOL); 900 901 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 902 cdp = debugvars[i]; 903 if (cdp->debugname == NULL || cdp->debugvar == NULL) 904 continue; 905 906 snprintf(nodename, sizeof(nodename), "debug%d", i); 907 sysctl_createv(clog, 0, NULL, NULL, 908 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 909 CTLTYPE_NODE, nodename, NULL, 910 NULL, 0, NULL, 0, 911 CTL_DEBUG, i, CTL_EOL); 912 sysctl_createv(clog, 0, NULL, NULL, 913 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 914 CTLTYPE_STRING, "name", NULL, 915 /*XXXUNCONST*/ 916 NULL, 0, __UNCONST(cdp->debugname), 0, 917 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 918 sysctl_createv(clog, 0, NULL, NULL, 919 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 920 CTLTYPE_INT, "value", NULL, 921 NULL, 0, cdp->debugvar, 0, 922 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 923 sysctl_createv(clog, 0, NULL, NULL, 924 CTLFLAG_PERMANENT, 925 CTLTYPE_INT, cdp->debugname, NULL, 926 NULL, 0, cdp->debugvar, 0, 927 CTL_DEBUG, CTL_CREATE, CTL_EOL); 928 } 929 } 930 #endif /* DEBUG */ 931 932 /* 933 * ******************************************************************** 934 * section 2: private node-specific helper routines. 935 * ******************************************************************** 936 */ 937 938 #ifdef DIAGNOSTIC 939 static int 940 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 941 { 942 int newtrig, error; 943 struct sysctlnode node; 944 945 newtrig = 0; 946 node = *rnode; 947 node.sysctl_data = &newtrig; 948 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 949 if (error || newp == NULL) 950 return (error); 951 952 if (newtrig != 0) 953 panic("Panic triggered"); 954 955 return (error); 956 } 957 #endif 958 959 /* 960 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 961 * new value is lower than desiredvnodes and then calls reinit 962 * routines that needs to adjust to the new value. 963 */ 964 static int 965 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 966 { 967 int error, new_vnodes, old_vnodes, new_max; 968 struct sysctlnode node; 969 970 new_vnodes = desiredvnodes; 971 node = *rnode; 972 node.sysctl_data = &new_vnodes; 973 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 974 if (error || newp == NULL) 975 return (error); 976 977 /* Limits: 75% of KVA and physical memory. */ 978 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 979 if (new_vnodes > new_max) 980 new_vnodes = new_max; 981 982 old_vnodes = desiredvnodes; 983 desiredvnodes = new_vnodes; 984 if (new_vnodes < old_vnodes) { 985 error = vfs_drainvnodes(new_vnodes); 986 if (error) { 987 desiredvnodes = old_vnodes; 988 return (error); 989 } 990 } 991 vfs_reinit(); 992 nchreinit(); 993 994 return (0); 995 } 996 997 /* 998 * sysctl helper routine for rtc_offset - set time after changes 999 */ 1000 static int 1001 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1002 { 1003 struct timespec ts, delta; 1004 int error, new_rtc_offset; 1005 struct sysctlnode node; 1006 1007 new_rtc_offset = rtc_offset; 1008 node = *rnode; 1009 node.sysctl_data = &new_rtc_offset; 1010 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1011 if (error || newp == NULL) 1012 return (error); 1013 1014 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1015 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1016 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1017 return (EPERM); 1018 if (rtc_offset == new_rtc_offset) 1019 return (0); 1020 1021 /* if we change the offset, adjust the time */ 1022 nanotime(&ts); 1023 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1024 delta.tv_nsec = 0; 1025 timespecadd(&ts, &delta, &ts); 1026 rtc_offset = new_rtc_offset; 1027 return (settime(l->l_proc, &ts)); 1028 } 1029 1030 /* 1031 * sysctl helper routine for kern.maxproc. Ensures that the new 1032 * values are not too low or too high. 1033 */ 1034 static int 1035 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1036 { 1037 int error, nmaxproc; 1038 struct sysctlnode node; 1039 1040 nmaxproc = maxproc; 1041 node = *rnode; 1042 node.sysctl_data = &nmaxproc; 1043 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1044 if (error || newp == NULL) 1045 return (error); 1046 1047 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1048 return (EINVAL); 1049 #ifdef __HAVE_CPU_MAXPROC 1050 if (nmaxproc > cpu_maxproc()) 1051 return (EINVAL); 1052 #endif 1053 maxproc = nmaxproc; 1054 1055 return (0); 1056 } 1057 1058 /* 1059 * sysctl helper function for kern.hostid. The hostid is a long, but 1060 * we export it as an int, so we need to give it a little help. 1061 */ 1062 static int 1063 sysctl_kern_hostid(SYSCTLFN_ARGS) 1064 { 1065 int error, inthostid; 1066 struct sysctlnode node; 1067 1068 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1069 node = *rnode; 1070 node.sysctl_data = &inthostid; 1071 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1072 if (error || newp == NULL) 1073 return (error); 1074 1075 hostid = (unsigned)inthostid; 1076 1077 return (0); 1078 } 1079 1080 /* 1081 * sysctl helper function for kern.hostname and kern.domainnname. 1082 * resets the relevant recorded length when the underlying name is 1083 * changed. 1084 */ 1085 static int 1086 sysctl_setlen(SYSCTLFN_ARGS) 1087 { 1088 int error; 1089 1090 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1091 if (error || newp == NULL) 1092 return (error); 1093 1094 switch (rnode->sysctl_num) { 1095 case KERN_HOSTNAME: 1096 hostnamelen = strlen((const char*)rnode->sysctl_data); 1097 break; 1098 case KERN_DOMAINNAME: 1099 domainnamelen = strlen((const char*)rnode->sysctl_data); 1100 break; 1101 } 1102 1103 return (0); 1104 } 1105 1106 /* 1107 * sysctl helper routine for kern.clockrate. Assembles a struct on 1108 * the fly to be returned to the caller. 1109 */ 1110 static int 1111 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1112 { 1113 struct clockinfo clkinfo; 1114 struct sysctlnode node; 1115 1116 clkinfo.tick = tick; 1117 clkinfo.tickadj = tickadj; 1118 clkinfo.hz = hz; 1119 clkinfo.profhz = profhz; 1120 clkinfo.stathz = stathz ? stathz : hz; 1121 1122 node = *rnode; 1123 node.sysctl_data = &clkinfo; 1124 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1125 } 1126 1127 /* 1128 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1129 * former it merely checks the message buffer is set up. For the latter, 1130 * it also copies out the data if necessary. 1131 */ 1132 static int 1133 sysctl_msgbuf(SYSCTLFN_ARGS) 1134 { 1135 char *where = oldp; 1136 size_t len, maxlen; 1137 long beg, end; 1138 extern kmutex_t log_lock; 1139 int error; 1140 1141 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1142 msgbufenabled = 0; 1143 return (ENXIO); 1144 } 1145 1146 switch (rnode->sysctl_num) { 1147 case KERN_MSGBUFSIZE: { 1148 struct sysctlnode node = *rnode; 1149 int msg_bufs = (int)msgbufp->msg_bufs; 1150 node.sysctl_data = &msg_bufs; 1151 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1152 } 1153 case KERN_MSGBUF: 1154 break; 1155 default: 1156 return (EOPNOTSUPP); 1157 } 1158 1159 if (newp != NULL) 1160 return (EPERM); 1161 1162 if (oldp == NULL) { 1163 /* always return full buffer size */ 1164 *oldlenp = msgbufp->msg_bufs; 1165 return (0); 1166 } 1167 1168 sysctl_unlock(); 1169 1170 /* 1171 * First, copy from the write pointer to the end of 1172 * message buffer. 1173 */ 1174 error = 0; 1175 mutex_spin_enter(&log_lock); 1176 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1177 beg = msgbufp->msg_bufx; 1178 end = msgbufp->msg_bufs; 1179 mutex_spin_exit(&log_lock); 1180 1181 while (maxlen > 0) { 1182 len = MIN(end - beg, maxlen); 1183 if (len == 0) 1184 break; 1185 /* XXX unlocked, but hardly matters. */ 1186 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1187 if (error) 1188 break; 1189 where += len; 1190 maxlen -= len; 1191 1192 /* 1193 * ... then, copy from the beginning of message buffer to 1194 * the write pointer. 1195 */ 1196 beg = 0; 1197 end = msgbufp->msg_bufx; 1198 } 1199 1200 sysctl_relock(); 1201 return (error); 1202 } 1203 1204 /* 1205 * sysctl helper routine for kern.defcorename. In the case of a new 1206 * string being assigned, check that it's not a zero-length string. 1207 * (XXX the check in -current doesn't work, but do we really care?) 1208 */ 1209 static int 1210 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1211 { 1212 int error; 1213 char *newcorename; 1214 struct sysctlnode node; 1215 1216 newcorename = PNBUF_GET(); 1217 node = *rnode; 1218 node.sysctl_data = &newcorename[0]; 1219 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1220 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1221 if (error || newp == NULL) { 1222 goto done; 1223 } 1224 1225 /* 1226 * when sysctl_lookup() deals with a string, it's guaranteed 1227 * to come back nul terminated. So there. :) 1228 */ 1229 if (strlen(newcorename) == 0) { 1230 error = EINVAL; 1231 } else { 1232 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1233 error = 0; 1234 } 1235 done: 1236 PNBUF_PUT(newcorename); 1237 return error; 1238 } 1239 1240 /* 1241 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1242 * across all cpus. 1243 */ 1244 static int 1245 sysctl_kern_cptime(SYSCTLFN_ARGS) 1246 { 1247 struct sysctlnode node = *rnode; 1248 uint64_t *cp_time = NULL; 1249 int error, n = ncpu, i; 1250 struct cpu_info *ci; 1251 CPU_INFO_ITERATOR cii; 1252 1253 /* 1254 * if you specifically pass a buffer that is the size of the 1255 * sum, or if you are probing for the size, you get the "sum" 1256 * of cp_time (and the size thereof) across all processors. 1257 * 1258 * alternately, you can pass an additional mib number and get 1259 * cp_time for that particular processor. 1260 */ 1261 switch (namelen) { 1262 case 0: 1263 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1264 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1265 n = -1; /* SUM */ 1266 } 1267 else { 1268 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1269 n = -2; /* ALL */ 1270 } 1271 break; 1272 case 1: 1273 if (name[0] < 0 || name[0] >= n) 1274 return (ENOENT); /* ENOSUCHPROCESSOR */ 1275 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1276 n = name[0]; 1277 /* 1278 * adjust these so that sysctl_lookup() will be happy 1279 */ 1280 name++; 1281 namelen--; 1282 break; 1283 default: 1284 return (EINVAL); 1285 } 1286 1287 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1288 if (cp_time == NULL) 1289 return (ENOMEM); 1290 node.sysctl_data = cp_time; 1291 memset(cp_time, 0, node.sysctl_size); 1292 1293 for (CPU_INFO_FOREACH(cii, ci)) { 1294 if (n <= 0) { 1295 for (i = 0; i < CPUSTATES; i++) { 1296 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1297 } 1298 } 1299 /* 1300 * if a specific processor was requested and we just 1301 * did it, we're done here 1302 */ 1303 if (n == 0) 1304 break; 1305 /* 1306 * if doing "all", skip to next cp_time set for next processor 1307 */ 1308 if (n == -2) 1309 cp_time += CPUSTATES; 1310 /* 1311 * if we're doing a specific processor, we're one 1312 * processor closer 1313 */ 1314 if (n > 0) 1315 n--; 1316 } 1317 1318 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1319 kmem_free(node.sysctl_data, node.sysctl_size); 1320 return (error); 1321 } 1322 1323 #if NPTY > 0 1324 /* 1325 * sysctl helper routine for kern.maxptys. Ensures that any new value 1326 * is acceptable to the pty subsystem. 1327 */ 1328 static int 1329 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1330 { 1331 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1332 int error, xmax; 1333 struct sysctlnode node; 1334 1335 /* get current value of maxptys */ 1336 xmax = pty_maxptys(0, 0); 1337 1338 node = *rnode; 1339 node.sysctl_data = &xmax; 1340 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1341 if (error || newp == NULL) 1342 return (error); 1343 1344 if (xmax != pty_maxptys(xmax, 1)) 1345 return (EINVAL); 1346 1347 return (0); 1348 } 1349 #endif /* NPTY > 0 */ 1350 1351 /* 1352 * sysctl helper routine for kern.sbmax. Basically just ensures that 1353 * any new value is not too small. 1354 */ 1355 static int 1356 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1357 { 1358 int error, new_sbmax; 1359 struct sysctlnode node; 1360 1361 new_sbmax = sb_max; 1362 node = *rnode; 1363 node.sysctl_data = &new_sbmax; 1364 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1365 if (error || newp == NULL) 1366 return (error); 1367 1368 KERNEL_LOCK(1, NULL); 1369 error = sb_max_set(new_sbmax); 1370 KERNEL_UNLOCK_ONE(NULL); 1371 1372 return (error); 1373 } 1374 1375 /* 1376 * sysctl helper routine for kern.urandom node. Picks a random number 1377 * for you. 1378 */ 1379 static int 1380 sysctl_kern_urnd(SYSCTLFN_ARGS) 1381 { 1382 int v, rv; 1383 1384 rv = cprng_strong(sysctl_prng, &v, sizeof(v), 0); 1385 if (rv == sizeof(v)) { 1386 struct sysctlnode node = *rnode; 1387 node.sysctl_data = &v; 1388 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1389 } 1390 else 1391 return (EIO); /*XXX*/ 1392 } 1393 1394 /* 1395 * sysctl helper routine for kern.arandom node. Picks a random number 1396 * for you. 1397 */ 1398 static int 1399 sysctl_kern_arnd(SYSCTLFN_ARGS) 1400 { 1401 int error; 1402 void *v; 1403 struct sysctlnode node = *rnode; 1404 1405 if (*oldlenp == 0) 1406 return 0; 1407 /* 1408 * This code used to allow sucking 8192 bytes at a time out 1409 * of the kernel arc4random generator. Evidently there is some 1410 * very old OpenBSD application code that may try to do this. 1411 * 1412 * Note that this node is documented as type "INT" -- 4 or 8 1413 * bytes, not 8192. 1414 * 1415 * We continue to support this abuse of the "len" pointer here 1416 * but only 256 bytes at a time, as, anecdotally, the actual 1417 * application use here was to generate RC4 keys in userspace. 1418 * 1419 * Support for such large requests will probably be removed 1420 * entirely in the future. 1421 */ 1422 if (*oldlenp > 256) 1423 return E2BIG; 1424 1425 v = kmem_alloc(*oldlenp, KM_SLEEP); 1426 cprng_fast(v, *oldlenp); 1427 node.sysctl_data = v; 1428 node.sysctl_size = *oldlenp; 1429 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1430 kmem_free(v, *oldlenp); 1431 return error; 1432 } 1433 /* 1434 * sysctl helper routine to do kern.lwp.* work. 1435 */ 1436 static int 1437 sysctl_kern_lwp(SYSCTLFN_ARGS) 1438 { 1439 struct kinfo_lwp klwp; 1440 struct proc *p; 1441 struct lwp *l2, *l3; 1442 char *where, *dp; 1443 int pid, elem_size, elem_count; 1444 int buflen, needed, error; 1445 bool gotit; 1446 1447 if (namelen == 1 && name[0] == CTL_QUERY) 1448 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1449 1450 dp = where = oldp; 1451 buflen = where != NULL ? *oldlenp : 0; 1452 error = needed = 0; 1453 1454 if (newp != NULL || namelen != 3) 1455 return (EINVAL); 1456 pid = name[0]; 1457 elem_size = name[1]; 1458 elem_count = name[2]; 1459 1460 sysctl_unlock(); 1461 if (pid == -1) { 1462 mutex_enter(proc_lock); 1463 PROCLIST_FOREACH(p, &allproc) { 1464 /* Grab a hold on the process. */ 1465 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1466 continue; 1467 } 1468 mutex_exit(proc_lock); 1469 1470 mutex_enter(p->p_lock); 1471 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1472 if (buflen >= elem_size && elem_count > 0) { 1473 lwp_lock(l2); 1474 fill_lwp(l2, &klwp); 1475 lwp_unlock(l2); 1476 mutex_exit(p->p_lock); 1477 1478 /* 1479 * Copy out elem_size, but not 1480 * larger than the size of a 1481 * struct kinfo_proc2. 1482 */ 1483 error = dcopyout(l, &klwp, dp, 1484 min(sizeof(klwp), elem_size)); 1485 if (error) { 1486 rw_exit(&p->p_reflock); 1487 goto cleanup; 1488 } 1489 mutex_enter(p->p_lock); 1490 LIST_FOREACH(l3, &p->p_lwps, 1491 l_sibling) { 1492 if (l2 == l3) 1493 break; 1494 } 1495 if (l3 == NULL) { 1496 mutex_exit(p->p_lock); 1497 rw_exit(&p->p_reflock); 1498 error = EAGAIN; 1499 goto cleanup; 1500 } 1501 dp += elem_size; 1502 buflen -= elem_size; 1503 elem_count--; 1504 } 1505 needed += elem_size; 1506 } 1507 mutex_exit(p->p_lock); 1508 1509 /* Drop reference to process. */ 1510 mutex_enter(proc_lock); 1511 rw_exit(&p->p_reflock); 1512 } 1513 mutex_exit(proc_lock); 1514 } else { 1515 mutex_enter(proc_lock); 1516 p = proc_find(pid); 1517 if (p == NULL) { 1518 error = ESRCH; 1519 mutex_exit(proc_lock); 1520 goto cleanup; 1521 } 1522 /* Grab a hold on the process. */ 1523 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1524 mutex_exit(proc_lock); 1525 if (!gotit) { 1526 error = ESRCH; 1527 goto cleanup; 1528 } 1529 1530 mutex_enter(p->p_lock); 1531 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1532 if (buflen >= elem_size && elem_count > 0) { 1533 lwp_lock(l2); 1534 fill_lwp(l2, &klwp); 1535 lwp_unlock(l2); 1536 mutex_exit(p->p_lock); 1537 /* 1538 * Copy out elem_size, but not larger than 1539 * the size of a struct kinfo_proc2. 1540 */ 1541 error = dcopyout(l, &klwp, dp, 1542 min(sizeof(klwp), elem_size)); 1543 if (error) { 1544 rw_exit(&p->p_reflock); 1545 goto cleanup; 1546 } 1547 mutex_enter(p->p_lock); 1548 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1549 if (l2 == l3) 1550 break; 1551 } 1552 if (l3 == NULL) { 1553 mutex_exit(p->p_lock); 1554 rw_exit(&p->p_reflock); 1555 error = EAGAIN; 1556 goto cleanup; 1557 } 1558 dp += elem_size; 1559 buflen -= elem_size; 1560 elem_count--; 1561 } 1562 needed += elem_size; 1563 } 1564 mutex_exit(p->p_lock); 1565 1566 /* Drop reference to process. */ 1567 rw_exit(&p->p_reflock); 1568 } 1569 1570 if (where != NULL) { 1571 *oldlenp = dp - where; 1572 if (needed > *oldlenp) { 1573 sysctl_relock(); 1574 return (ENOMEM); 1575 } 1576 } else { 1577 needed += KERN_LWPSLOP; 1578 *oldlenp = needed; 1579 } 1580 error = 0; 1581 cleanup: 1582 sysctl_relock(); 1583 return (error); 1584 } 1585 1586 /* 1587 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1588 * given value is not too large or two small, and is at least one 1589 * timer tick if not zero. 1590 */ 1591 static int 1592 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1593 { 1594 /* userland sees value in ms, internally is in ticks */ 1595 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1596 int error, timo, lsleep; 1597 struct sysctlnode node; 1598 1599 lsleep = forkfsleep * 1000 / hz; 1600 node = *rnode; 1601 node.sysctl_data = &lsleep; 1602 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1603 if (error || newp == NULL) 1604 return (error); 1605 1606 /* refuse negative values, and overly 'long time' */ 1607 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1608 return (EINVAL); 1609 1610 timo = mstohz(lsleep); 1611 1612 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1613 if (lsleep != 0 && timo == 0) 1614 forkfsleep = 1; 1615 else 1616 forkfsleep = timo; 1617 1618 return (0); 1619 } 1620 1621 /* 1622 * sysctl helper routine for kern.root_partition 1623 */ 1624 static int 1625 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1626 { 1627 int rootpart = DISKPART(rootdev); 1628 struct sysctlnode node = *rnode; 1629 1630 node.sysctl_data = &rootpart; 1631 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1632 } 1633 1634 /* 1635 * sysctl helper function for kern.drivers 1636 */ 1637 static int 1638 sysctl_kern_drivers(SYSCTLFN_ARGS) 1639 { 1640 int error; 1641 size_t buflen; 1642 struct kinfo_drivers kd; 1643 char *start, *where; 1644 const char *dname; 1645 int i; 1646 extern struct devsw_conv *devsw_conv; 1647 extern int max_devsw_convs; 1648 1649 if (newp != NULL || namelen != 0) 1650 return (EINVAL); 1651 1652 start = where = oldp; 1653 buflen = *oldlenp; 1654 if (where == NULL) { 1655 *oldlenp = max_devsw_convs * sizeof kd; 1656 return 0; 1657 } 1658 1659 /* 1660 * An array of kinfo_drivers structures 1661 */ 1662 error = 0; 1663 sysctl_unlock(); 1664 mutex_enter(&device_lock); 1665 for (i = 0; i < max_devsw_convs; i++) { 1666 dname = devsw_conv[i].d_name; 1667 if (dname == NULL) 1668 continue; 1669 if (buflen < sizeof kd) { 1670 error = ENOMEM; 1671 break; 1672 } 1673 memset(&kd, 0, sizeof(kd)); 1674 kd.d_bmajor = devsw_conv[i].d_bmajor; 1675 kd.d_cmajor = devsw_conv[i].d_cmajor; 1676 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1677 mutex_exit(&device_lock); 1678 error = dcopyout(l, &kd, where, sizeof kd); 1679 mutex_enter(&device_lock); 1680 if (error != 0) 1681 break; 1682 buflen -= sizeof kd; 1683 where += sizeof kd; 1684 } 1685 mutex_exit(&device_lock); 1686 sysctl_relock(); 1687 *oldlenp = where - start; 1688 return error; 1689 } 1690 1691 static int 1692 sysctl_security_setidcore(SYSCTLFN_ARGS) 1693 { 1694 int newsize, error; 1695 struct sysctlnode node; 1696 1697 node = *rnode; 1698 node.sysctl_data = &newsize; 1699 newsize = *(int *)rnode->sysctl_data; 1700 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1701 if (error || newp == NULL) 1702 return error; 1703 1704 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 1705 0, NULL, NULL, NULL)) 1706 return (EPERM); 1707 1708 *(int *)rnode->sysctl_data = newsize; 1709 1710 return 0; 1711 } 1712 1713 static int 1714 sysctl_security_setidcorename(SYSCTLFN_ARGS) 1715 { 1716 int error; 1717 char *newsetidcorename; 1718 struct sysctlnode node; 1719 1720 newsetidcorename = PNBUF_GET(); 1721 node = *rnode; 1722 node.sysctl_data = newsetidcorename; 1723 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1724 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1725 if (error || newp == NULL) { 1726 goto out; 1727 } 1728 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 1729 0, NULL, NULL, NULL)) { 1730 error = EPERM; 1731 goto out; 1732 } 1733 if (strlen(newsetidcorename) == 0) { 1734 error = EINVAL; 1735 goto out; 1736 } 1737 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1738 out: 1739 PNBUF_PUT(newsetidcorename); 1740 return error; 1741 } 1742 1743 /* 1744 * sysctl helper routine for kern.cp_id node. Maps cpus to their 1745 * cpuids. 1746 */ 1747 static int 1748 sysctl_kern_cpid(SYSCTLFN_ARGS) 1749 { 1750 struct sysctlnode node = *rnode; 1751 uint64_t *cp_id = NULL; 1752 int error, n = ncpu; 1753 struct cpu_info *ci; 1754 CPU_INFO_ITERATOR cii; 1755 1756 /* 1757 * Here you may either retrieve a single cpu id or the whole 1758 * set. The size you get back when probing depends on what 1759 * you ask for. 1760 */ 1761 switch (namelen) { 1762 case 0: 1763 node.sysctl_size = n * sizeof(uint64_t); 1764 n = -2; /* ALL */ 1765 break; 1766 case 1: 1767 if (name[0] < 0 || name[0] >= n) 1768 return (ENOENT); /* ENOSUCHPROCESSOR */ 1769 node.sysctl_size = sizeof(uint64_t); 1770 n = name[0]; 1771 /* 1772 * adjust these so that sysctl_lookup() will be happy 1773 */ 1774 name++; 1775 namelen--; 1776 break; 1777 default: 1778 return (EINVAL); 1779 } 1780 1781 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 1782 if (cp_id == NULL) 1783 return (ENOMEM); 1784 node.sysctl_data = cp_id; 1785 memset(cp_id, 0, node.sysctl_size); 1786 1787 for (CPU_INFO_FOREACH(cii, ci)) { 1788 if (n <= 0) 1789 cp_id[0] = cpu_index(ci); 1790 /* 1791 * if a specific processor was requested and we just 1792 * did it, we're done here 1793 */ 1794 if (n == 0) 1795 break; 1796 /* 1797 * if doing "all", skip to next cp_id slot for next processor 1798 */ 1799 if (n == -2) 1800 cp_id++; 1801 /* 1802 * if we're doing a specific processor, we're one 1803 * processor closer 1804 */ 1805 if (n > 0) 1806 n--; 1807 } 1808 1809 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1810 kmem_free(node.sysctl_data, node.sysctl_size); 1811 return (error); 1812 } 1813 1814 /* 1815 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 1816 * calculate on the fly taking into account integer overflow and the 1817 * current wired count. 1818 */ 1819 static int 1820 sysctl_hw_usermem(SYSCTLFN_ARGS) 1821 { 1822 u_int ui; 1823 u_quad_t uq; 1824 struct sysctlnode node; 1825 1826 node = *rnode; 1827 switch (rnode->sysctl_num) { 1828 case HW_USERMEM: 1829 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1830 ui = UINT_MAX; 1831 else 1832 ui *= PAGE_SIZE; 1833 node.sysctl_data = &ui; 1834 break; 1835 case HW_USERMEM64: 1836 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1837 node.sysctl_data = &uq; 1838 break; 1839 default: 1840 return (EINVAL); 1841 } 1842 1843 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1844 } 1845 1846 /* 1847 * sysctl helper routine for kern.cnmagic node. Pulls the old value 1848 * out, encoded, and stuffs the new value in for decoding. 1849 */ 1850 static int 1851 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 1852 { 1853 char magic[CNS_LEN]; 1854 int error; 1855 struct sysctlnode node; 1856 1857 if (oldp) 1858 cn_get_magic(magic, CNS_LEN); 1859 node = *rnode; 1860 node.sysctl_data = &magic[0]; 1861 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1862 if (error || newp == NULL) 1863 return (error); 1864 1865 return (cn_set_magic(magic)); 1866 } 1867 1868 /* 1869 * ******************************************************************** 1870 * section 3: public helper routines that are used for more than one 1871 * node 1872 * ******************************************************************** 1873 */ 1874 1875 /* 1876 * sysctl helper routine for the kern.root_device node and some ports' 1877 * machdep.root_device nodes. 1878 */ 1879 int 1880 sysctl_root_device(SYSCTLFN_ARGS) 1881 { 1882 struct sysctlnode node; 1883 1884 node = *rnode; 1885 node.sysctl_data = root_device->dv_xname; 1886 node.sysctl_size = strlen(device_xname(root_device)) + 1; 1887 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1888 } 1889 1890 /* 1891 * sysctl helper routine for kern.consdev, dependent on the current 1892 * state of the console. Also used for machdep.console_device on some 1893 * ports. 1894 */ 1895 int 1896 sysctl_consdev(SYSCTLFN_ARGS) 1897 { 1898 dev_t consdev; 1899 uint32_t oconsdev; 1900 struct sysctlnode node; 1901 1902 if (cn_tab != NULL) 1903 consdev = cn_tab->cn_dev; 1904 else 1905 consdev = NODEV; 1906 node = *rnode; 1907 switch (*oldlenp) { 1908 case sizeof(consdev): 1909 node.sysctl_data = &consdev; 1910 node.sysctl_size = sizeof(consdev); 1911 break; 1912 case sizeof(oconsdev): 1913 oconsdev = (uint32_t)consdev; 1914 node.sysctl_data = &oconsdev; 1915 node.sysctl_size = sizeof(oconsdev); 1916 break; 1917 default: 1918 return EINVAL; 1919 } 1920 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1921 } 1922 1923 /* 1924 * ******************************************************************** 1925 * section 4: support for some helpers 1926 * ******************************************************************** 1927 */ 1928 1929 1930 /* 1931 * Fill in a kinfo_lwp structure for the specified lwp. 1932 */ 1933 static void 1934 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 1935 { 1936 struct proc *p = l->l_proc; 1937 struct timeval tv; 1938 1939 KASSERT(lwp_locked(l, NULL)); 1940 1941 memset(kl, 0, sizeof(*kl)); 1942 1943 kl->l_forw = 0; 1944 kl->l_back = 0; 1945 kl->l_laddr = PTRTOUINT64(l); 1946 kl->l_addr = PTRTOUINT64(l->l_addr); 1947 kl->l_stat = l->l_stat; 1948 kl->l_lid = l->l_lid; 1949 kl->l_flag = L_INMEM; 1950 kl->l_flag |= sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 1951 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 1952 1953 kl->l_swtime = l->l_swtime; 1954 kl->l_slptime = l->l_slptime; 1955 if (l->l_stat == LSONPROC) 1956 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 1957 else 1958 kl->l_schedflags = 0; 1959 kl->l_priority = lwp_eprio(l); 1960 kl->l_usrpri = l->l_priority; 1961 if (l->l_wchan) 1962 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 1963 kl->l_wchan = PTRTOUINT64(l->l_wchan); 1964 kl->l_cpuid = cpu_index(l->l_cpu); 1965 bintime2timeval(&l->l_rtime, &tv); 1966 kl->l_rtime_sec = tv.tv_sec; 1967 kl->l_rtime_usec = tv.tv_usec; 1968 kl->l_cpticks = l->l_cpticks; 1969 kl->l_pctcpu = l->l_pctcpu; 1970 kl->l_pid = p->p_pid; 1971 if (l->l_name == NULL) 1972 kl->l_name[0] = '\0'; 1973 else 1974 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 1975 } 1976
Indexes created Wed Oct 01 15:09:59 GMT 2025