init_sysctl.c revision 1.198
1 /* $NetBSD: init_sysctl.c,v 1.198 2013/09/14 13:18:02 joerg 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 1.198 2013/09/14 13:18:02 joerg Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_compat_netbsd.h" 37 #include "opt_modular.h" 38 #include "pty.h" 39 40 #define SYSCTL_PRIVATE 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 #include <sys/cpu.h> 73 74 int security_setidcore_dump; 75 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 76 uid_t security_setidcore_owner = 0; 77 gid_t security_setidcore_group = 0; 78 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 79 80 static const u_int sysctl_lwpprflagmap[] = { 81 LPR_DETACHED, L_DETACHED, 82 0 83 }; 84 85 /* 86 * try over estimating by 5 procs/lwps 87 */ 88 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 89 90 static int dcopyout(struct lwp *, const void *, void *, size_t); 91 92 static int 93 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 94 { 95 int error; 96 97 error = copyout(kaddr, uaddr, len); 98 ktrmibio(-1, UIO_READ, uaddr, len, error); 99 100 return error; 101 } 102 103 #ifdef DIAGNOSTIC 104 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 105 #endif 106 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 107 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 108 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 109 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 110 static int sysctl_setlen(SYSCTLFN_PROTO); 111 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 112 static int sysctl_msgbuf(SYSCTLFN_PROTO); 113 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 114 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 115 #if NPTY > 0 116 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 117 #endif /* NPTY > 0 */ 118 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 119 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 120 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 121 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 122 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 123 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 124 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 125 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 126 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 127 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 128 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 129 130 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 131 132 /* 133 * ******************************************************************** 134 * section 1: setup routines 135 * ******************************************************************** 136 * These functions are stuffed into a link set for sysctl setup 137 * functions. They're never called or referenced from anywhere else. 138 * ******************************************************************** 139 */ 140 141 /* 142 * this setup routine is a replacement for kern_sysctl() 143 */ 144 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 145 { 146 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 147 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 148 extern int dumponpanic; /* defined in kern/subr_prf.c */ 149 const struct sysctlnode *rnode; 150 151 sysctl_createv(clog, 0, NULL, NULL, 152 CTLFLAG_PERMANENT, 153 CTLTYPE_NODE, "kern", NULL, 154 NULL, 0, NULL, 0, 155 CTL_KERN, CTL_EOL); 156 157 sysctl_createv(clog, 0, NULL, NULL, 158 CTLFLAG_PERMANENT, 159 CTLTYPE_STRING, "ostype", 160 SYSCTL_DESCR("Operating system type"), 161 NULL, 0, __UNCONST(&ostype), 0, 162 CTL_KERN, KERN_OSTYPE, CTL_EOL); 163 sysctl_createv(clog, 0, NULL, NULL, 164 CTLFLAG_PERMANENT, 165 CTLTYPE_STRING, "osrelease", 166 SYSCTL_DESCR("Operating system release"), 167 NULL, 0, __UNCONST(&osrelease), 0, 168 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 169 sysctl_createv(clog, 0, NULL, NULL, 170 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 171 CTLTYPE_INT, "osrevision", 172 SYSCTL_DESCR("Operating system revision"), 173 NULL, __NetBSD_Version__, NULL, 0, 174 CTL_KERN, KERN_OSREV, CTL_EOL); 175 sysctl_createv(clog, 0, NULL, NULL, 176 CTLFLAG_PERMANENT, 177 CTLTYPE_STRING, "version", 178 SYSCTL_DESCR("Kernel version"), 179 NULL, 0, __UNCONST(&version), 0, 180 CTL_KERN, KERN_VERSION, CTL_EOL); 181 sysctl_createv(clog, 0, NULL, NULL, 182 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 183 CTLTYPE_INT, "maxvnodes", 184 SYSCTL_DESCR("Maximum number of vnodes"), 185 sysctl_kern_maxvnodes, 0, NULL, 0, 186 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 187 sysctl_createv(clog, 0, NULL, NULL, 188 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 189 CTLTYPE_INT, "maxproc", 190 SYSCTL_DESCR("Maximum number of simultaneous processes"), 191 sysctl_kern_maxproc, 0, NULL, 0, 192 CTL_KERN, KERN_MAXPROC, CTL_EOL); 193 sysctl_createv(clog, 0, NULL, NULL, 194 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 195 CTLTYPE_INT, "maxfiles", 196 SYSCTL_DESCR("Maximum number of open files"), 197 NULL, 0, &maxfiles, 0, 198 CTL_KERN, KERN_MAXFILES, CTL_EOL); 199 sysctl_createv(clog, 0, NULL, NULL, 200 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 201 CTLTYPE_INT, "argmax", 202 SYSCTL_DESCR("Maximum number of bytes of arguments to " 203 "execve(2)"), 204 NULL, ARG_MAX, NULL, 0, 205 CTL_KERN, KERN_ARGMAX, CTL_EOL); 206 sysctl_createv(clog, 0, NULL, NULL, 207 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 208 CTLTYPE_STRING, "hostname", 209 SYSCTL_DESCR("System hostname"), 210 sysctl_setlen, 0, hostname, MAXHOSTNAMELEN, 211 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 212 sysctl_createv(clog, 0, NULL, NULL, 213 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 214 CTLTYPE_INT, "hostid", 215 SYSCTL_DESCR("System host ID number"), 216 sysctl_kern_hostid, 0, NULL, 0, 217 CTL_KERN, KERN_HOSTID, CTL_EOL); 218 sysctl_createv(clog, 0, NULL, NULL, 219 CTLFLAG_PERMANENT, 220 CTLTYPE_STRUCT, "clockrate", 221 SYSCTL_DESCR("Kernel clock rates"), 222 sysctl_kern_clockrate, 0, NULL, 223 sizeof(struct clockinfo), 224 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 225 sysctl_createv(clog, 0, NULL, NULL, 226 CTLFLAG_PERMANENT, 227 CTLTYPE_INT, "hardclock_ticks", 228 SYSCTL_DESCR("Number of hardclock ticks"), 229 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 230 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 231 sysctl_createv(clog, 0, NULL, NULL, 232 CTLFLAG_PERMANENT, 233 CTLTYPE_STRUCT, "vnode", 234 SYSCTL_DESCR("System vnode table"), 235 sysctl_kern_vnode, 0, NULL, 0, 236 CTL_KERN, KERN_VNODE, CTL_EOL); 237 #ifndef GPROF 238 sysctl_createv(clog, 0, NULL, NULL, 239 CTLFLAG_PERMANENT, 240 CTLTYPE_NODE, "profiling", 241 SYSCTL_DESCR("Profiling information (not available)"), 242 sysctl_notavail, 0, NULL, 0, 243 CTL_KERN, KERN_PROF, CTL_EOL); 244 #endif 245 sysctl_createv(clog, 0, NULL, NULL, 246 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 247 CTLTYPE_INT, "posix1version", 248 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 249 "with which the operating system attempts " 250 "to comply"), 251 NULL, _POSIX_VERSION, NULL, 0, 252 CTL_KERN, KERN_POSIX1, CTL_EOL); 253 sysctl_createv(clog, 0, NULL, NULL, 254 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 255 CTLTYPE_INT, "ngroups", 256 SYSCTL_DESCR("Maximum number of supplemental groups"), 257 NULL, NGROUPS_MAX, NULL, 0, 258 CTL_KERN, KERN_NGROUPS, CTL_EOL); 259 sysctl_createv(clog, 0, NULL, NULL, 260 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 261 CTLTYPE_INT, "job_control", 262 SYSCTL_DESCR("Whether job control is available"), 263 NULL, 1, NULL, 0, 264 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 265 sysctl_createv(clog, 0, NULL, NULL, 266 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 267 CTLTYPE_INT, "saved_ids", 268 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 269 "available"), NULL, 270 #ifdef _POSIX_SAVED_IDS 271 1, 272 #else /* _POSIX_SAVED_IDS */ 273 0, 274 #endif /* _POSIX_SAVED_IDS */ 275 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 276 sysctl_createv(clog, 0, NULL, NULL, 277 CTLFLAG_PERMANENT|CTLFLAG_HEX, 278 CTLTYPE_INT, "boothowto", 279 SYSCTL_DESCR("Flags from boot loader"), 280 NULL, 0, &boothowto, sizeof(boothowto), 281 CTL_KERN, CTL_CREATE, CTL_EOL); 282 sysctl_createv(clog, 0, NULL, NULL, 283 CTLFLAG_PERMANENT, 284 CTLTYPE_STRUCT, "boottime", 285 SYSCTL_DESCR("System boot time"), 286 NULL, 0, &boottime, sizeof(boottime), 287 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 288 sysctl_createv(clog, 0, NULL, NULL, 289 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 290 CTLTYPE_STRING, "domainname", 291 SYSCTL_DESCR("YP domain name"), 292 sysctl_setlen, 0, domainname, MAXHOSTNAMELEN, 293 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 294 sysctl_createv(clog, 0, NULL, NULL, 295 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 296 CTLTYPE_INT, "maxpartitions", 297 SYSCTL_DESCR("Maximum number of partitions allowed per " 298 "disk"), 299 NULL, MAXPARTITIONS, NULL, 0, 300 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 301 sysctl_createv(clog, 0, NULL, NULL, 302 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 303 CTLTYPE_INT, "rawpartition", 304 SYSCTL_DESCR("Raw partition of a disk"), 305 NULL, RAW_PART, NULL, 0, 306 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 307 sysctl_createv(clog, 0, NULL, NULL, 308 CTLFLAG_PERMANENT, 309 CTLTYPE_STRUCT, "timex", NULL, 310 sysctl_notavail, 0, NULL, 0, 311 CTL_KERN, KERN_TIMEX, CTL_EOL); 312 sysctl_createv(clog, 0, NULL, NULL, 313 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 314 CTLTYPE_INT, "rtc_offset", 315 SYSCTL_DESCR("Offset of real time clock from UTC in " 316 "minutes"), 317 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 318 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 319 sysctl_createv(clog, 0, NULL, NULL, 320 CTLFLAG_PERMANENT, 321 CTLTYPE_STRING, "root_device", 322 SYSCTL_DESCR("Name of the root device"), 323 sysctl_root_device, 0, NULL, 0, 324 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 325 sysctl_createv(clog, 0, NULL, NULL, 326 CTLFLAG_PERMANENT, 327 CTLTYPE_INT, "msgbufsize", 328 SYSCTL_DESCR("Size of the kernel message buffer"), 329 sysctl_msgbuf, 0, NULL, 0, 330 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 331 sysctl_createv(clog, 0, NULL, NULL, 332 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 333 CTLTYPE_INT, "fsync", 334 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 335 "Synchronization Option is available on " 336 "this system"), 337 NULL, 1, NULL, 0, 338 CTL_KERN, KERN_FSYNC, CTL_EOL); 339 sysctl_createv(clog, 0, NULL, NULL, 340 CTLFLAG_PERMANENT, 341 CTLTYPE_NODE, "ipc", 342 SYSCTL_DESCR("SysV IPC options"), 343 NULL, 0, NULL, 0, 344 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 345 sysctl_createv(clog, 0, NULL, NULL, 346 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 347 CTLTYPE_INT, "sysvmsg", 348 SYSCTL_DESCR("System V style message support available"), 349 NULL, 350 #ifdef SYSVMSG 351 1, 352 #else /* SYSVMSG */ 353 0, 354 #endif /* SYSVMSG */ 355 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 356 sysctl_createv(clog, 0, NULL, NULL, 357 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 358 CTLTYPE_INT, "sysvsem", 359 SYSCTL_DESCR("System V style semaphore support " 360 "available"), NULL, 361 #ifdef SYSVSEM 362 1, 363 #else /* SYSVSEM */ 364 0, 365 #endif /* SYSVSEM */ 366 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 367 sysctl_createv(clog, 0, NULL, NULL, 368 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 369 CTLTYPE_INT, "sysvshm", 370 SYSCTL_DESCR("System V style shared memory support " 371 "available"), NULL, 372 #ifdef SYSVSHM 373 1, 374 #else /* SYSVSHM */ 375 0, 376 #endif /* SYSVSHM */ 377 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 378 sysctl_createv(clog, 0, NULL, NULL, 379 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 380 CTLTYPE_INT, "synchronized_io", 381 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 382 "I/O Option is available on this system"), 383 NULL, 1, NULL, 0, 384 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 385 sysctl_createv(clog, 0, NULL, NULL, 386 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 387 CTLTYPE_INT, "iov_max", 388 SYSCTL_DESCR("Maximum number of iovec structures per " 389 "process"), 390 NULL, IOV_MAX, NULL, 0, 391 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 392 sysctl_createv(clog, 0, NULL, NULL, 393 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 394 CTLTYPE_INT, "mapped_files", 395 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 396 "Files Option is available on this system"), 397 NULL, 1, NULL, 0, 398 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 399 sysctl_createv(clog, 0, NULL, NULL, 400 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 401 CTLTYPE_INT, "memlock", 402 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 403 "Locking Option is available on this " 404 "system"), 405 NULL, 1, NULL, 0, 406 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 407 sysctl_createv(clog, 0, NULL, NULL, 408 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 409 CTLTYPE_INT, "memlock_range", 410 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 411 "Locking Option is available on this " 412 "system"), 413 NULL, 1, NULL, 0, 414 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 415 sysctl_createv(clog, 0, NULL, NULL, 416 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 417 CTLTYPE_INT, "memory_protection", 418 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 419 "Protection Option is available on this " 420 "system"), 421 NULL, 1, NULL, 0, 422 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 423 sysctl_createv(clog, 0, NULL, NULL, 424 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 425 CTLTYPE_INT, "login_name_max", 426 SYSCTL_DESCR("Maximum login name length"), 427 NULL, LOGIN_NAME_MAX, NULL, 0, 428 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 429 sysctl_createv(clog, 0, NULL, NULL, 430 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 431 CTLTYPE_STRING, "defcorename", 432 SYSCTL_DESCR("Default core file name"), 433 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 434 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 435 sysctl_createv(clog, 0, NULL, NULL, 436 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 437 CTLTYPE_INT, "logsigexit", 438 SYSCTL_DESCR("Log process exit when caused by signals"), 439 NULL, 0, &kern_logsigexit, 0, 440 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 441 sysctl_createv(clog, 0, NULL, NULL, 442 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 443 CTLTYPE_INT, "fscale", 444 SYSCTL_DESCR("Kernel fixed-point scale factor"), 445 NULL, FSCALE, NULL, 0, 446 CTL_KERN, KERN_FSCALE, CTL_EOL); 447 sysctl_createv(clog, 0, NULL, NULL, 448 CTLFLAG_PERMANENT, 449 CTLTYPE_INT, "ccpu", 450 SYSCTL_DESCR("Scheduler exponential decay value"), 451 NULL, 0, &ccpu, 0, 452 CTL_KERN, KERN_CCPU, CTL_EOL); 453 sysctl_createv(clog, 0, NULL, NULL, 454 CTLFLAG_PERMANENT, 455 CTLTYPE_STRUCT, "cp_time", 456 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 457 sysctl_kern_cptime, 0, NULL, 0, 458 CTL_KERN, KERN_CP_TIME, CTL_EOL); 459 sysctl_createv(clog, 0, NULL, NULL, 460 CTLFLAG_PERMANENT, 461 CTLTYPE_INT, "msgbuf", 462 SYSCTL_DESCR("Kernel message buffer"), 463 sysctl_msgbuf, 0, NULL, 0, 464 CTL_KERN, KERN_MSGBUF, CTL_EOL); 465 sysctl_createv(clog, 0, NULL, NULL, 466 CTLFLAG_PERMANENT, 467 CTLTYPE_STRUCT, "consdev", 468 SYSCTL_DESCR("Console device"), 469 sysctl_consdev, 0, NULL, sizeof(dev_t), 470 CTL_KERN, KERN_CONSDEV, CTL_EOL); 471 #if NPTY > 0 472 sysctl_createv(clog, 0, NULL, NULL, 473 CTLFLAG_PERMANENT, 474 CTLTYPE_INT, "maxptys", 475 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 476 sysctl_kern_maxptys, 0, NULL, 0, 477 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 478 #endif /* NPTY > 0 */ 479 sysctl_createv(clog, 0, NULL, NULL, 480 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 481 CTLTYPE_INT, "maxphys", 482 SYSCTL_DESCR("Maximum raw I/O transfer size"), 483 NULL, MAXPHYS, NULL, 0, 484 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 485 sysctl_createv(clog, 0, NULL, NULL, 486 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 487 CTLTYPE_INT, "monotonic_clock", 488 SYSCTL_DESCR("Implementation version of the POSIX " 489 "1003.1b Monotonic Clock Option"), 490 /* XXX _POSIX_VERSION */ 491 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 492 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 493 sysctl_createv(clog, 0, NULL, NULL, 494 CTLFLAG_PERMANENT, 495 CTLTYPE_INT, "urandom", 496 SYSCTL_DESCR("Random integer value"), 497 sysctl_kern_urnd, 0, NULL, 0, 498 CTL_KERN, KERN_URND, CTL_EOL); 499 sysctl_createv(clog, 0, NULL, NULL, 500 CTLFLAG_PERMANENT, 501 CTLTYPE_INT, "arandom", 502 SYSCTL_DESCR("n bytes of random data"), 503 sysctl_kern_arnd, 0, NULL, 0, 504 CTL_KERN, KERN_ARND, CTL_EOL); 505 sysctl_createv(clog, 0, NULL, NULL, 506 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 507 CTLTYPE_INT, "labelsector", 508 SYSCTL_DESCR("Sector number containing the disklabel"), 509 NULL, LABELSECTOR, NULL, 0, 510 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 511 sysctl_createv(clog, 0, NULL, NULL, 512 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 513 CTLTYPE_INT, "labeloffset", 514 SYSCTL_DESCR("Offset of the disklabel within the " 515 "sector"), 516 NULL, LABELOFFSET, NULL, 0, 517 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 518 sysctl_createv(clog, 0, NULL, NULL, 519 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 520 CTLTYPE_INT, "labelusesmbr", 521 SYSCTL_DESCR("disklabel is inside MBR partition"), 522 NULL, LABELUSESMBR, NULL, 0, 523 CTL_KERN, CTL_CREATE, CTL_EOL); 524 sysctl_createv(clog, 0, NULL, NULL, 525 CTLFLAG_PERMANENT, 526 CTLTYPE_NODE, "lwp", 527 SYSCTL_DESCR("System-wide LWP information"), 528 sysctl_kern_lwp, 0, NULL, 0, 529 CTL_KERN, KERN_LWP, CTL_EOL); 530 sysctl_createv(clog, 0, NULL, NULL, 531 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 532 CTLTYPE_INT, "forkfsleep", 533 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 534 "to process limits"), 535 sysctl_kern_forkfsleep, 0, NULL, 0, 536 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 537 sysctl_createv(clog, 0, NULL, NULL, 538 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 539 CTLTYPE_INT, "posix_threads", 540 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 541 "Threads option to which the system " 542 "attempts to conform"), 543 /* XXX _POSIX_VERSION */ 544 NULL, _POSIX_THREADS, NULL, 0, 545 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 546 sysctl_createv(clog, 0, NULL, NULL, 547 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 548 CTLTYPE_INT, "posix_semaphores", 549 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 550 "Semaphores option to which the system " 551 "attempts to conform"), NULL, 552 200112, NULL, 0, 553 CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 554 sysctl_createv(clog, 0, NULL, NULL, 555 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 556 CTLTYPE_INT, "posix_barriers", 557 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 558 "Barriers option to which the system " 559 "attempts to conform"), 560 /* XXX _POSIX_VERSION */ 561 NULL, _POSIX_BARRIERS, NULL, 0, 562 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 563 sysctl_createv(clog, 0, NULL, NULL, 564 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 565 CTLTYPE_INT, "posix_timers", 566 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 567 "Timers option to which the system " 568 "attempts to conform"), 569 /* XXX _POSIX_VERSION */ 570 NULL, _POSIX_TIMERS, NULL, 0, 571 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 572 sysctl_createv(clog, 0, NULL, NULL, 573 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 574 CTLTYPE_INT, "posix_spin_locks", 575 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 576 "Locks option to which the system attempts " 577 "to conform"), 578 /* XXX _POSIX_VERSION */ 579 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 580 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 581 sysctl_createv(clog, 0, NULL, NULL, 582 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 583 CTLTYPE_INT, "posix_reader_writer_locks", 584 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 585 "Read-Write Locks option to which the " 586 "system attempts to conform"), 587 /* XXX _POSIX_VERSION */ 588 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 589 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 590 sysctl_createv(clog, 0, NULL, NULL, 591 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 592 CTLTYPE_INT, "dump_on_panic", 593 SYSCTL_DESCR("Perform a crash dump on system panic"), 594 NULL, 0, &dumponpanic, 0, 595 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 596 #ifdef DIAGNOSTIC 597 sysctl_createv(clog, 0, NULL, NULL, 598 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 599 CTLTYPE_INT, "panic_now", 600 SYSCTL_DESCR("Trigger a panic"), 601 sysctl_kern_trigger_panic, 0, NULL, 0, 602 CTL_KERN, CTL_CREATE, CTL_EOL); 603 #endif 604 sysctl_createv(clog, 0, NULL, NULL, 605 CTLFLAG_PERMANENT, 606 CTLTYPE_INT, "root_partition", 607 SYSCTL_DESCR("Root partition on the root device"), 608 sysctl_kern_root_partition, 0, NULL, 0, 609 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 610 sysctl_createv(clog, 0, NULL, NULL, 611 CTLFLAG_PERMANENT, 612 CTLTYPE_STRUCT, "drivers", 613 SYSCTL_DESCR("List of all drivers with block and " 614 "character device numbers"), 615 sysctl_kern_drivers, 0, NULL, 0, 616 CTL_KERN, KERN_DRIVERS, CTL_EOL); 617 sysctl_createv(clog, 0, NULL, NULL, 618 CTLFLAG_PERMANENT, 619 CTLTYPE_STRUCT, "cp_id", 620 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 621 sysctl_kern_cpid, 0, NULL, 0, 622 CTL_KERN, KERN_CP_ID, CTL_EOL); 623 sysctl_createv(clog, 0, NULL, &rnode, 624 CTLFLAG_PERMANENT, 625 CTLTYPE_NODE, "coredump", 626 SYSCTL_DESCR("Coredump settings."), 627 NULL, 0, NULL, 0, 628 CTL_KERN, CTL_CREATE, CTL_EOL); 629 sysctl_createv(clog, 0, &rnode, &rnode, 630 CTLFLAG_PERMANENT, 631 CTLTYPE_NODE, "setid", 632 SYSCTL_DESCR("Set-id processes' coredump settings."), 633 NULL, 0, NULL, 0, 634 CTL_CREATE, CTL_EOL); 635 sysctl_createv(clog, 0, &rnode, NULL, 636 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 637 CTLTYPE_INT, "dump", 638 SYSCTL_DESCR("Allow set-id processes to dump core."), 639 sysctl_security_setidcore, 0, &security_setidcore_dump, 640 sizeof(security_setidcore_dump), 641 CTL_CREATE, CTL_EOL); 642 sysctl_createv(clog, 0, &rnode, NULL, 643 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 644 CTLTYPE_STRING, "path", 645 SYSCTL_DESCR("Path pattern for set-id coredumps."), 646 sysctl_security_setidcorename, 0, 647 security_setidcore_path, 648 sizeof(security_setidcore_path), 649 CTL_CREATE, CTL_EOL); 650 sysctl_createv(clog, 0, &rnode, NULL, 651 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 652 CTLTYPE_INT, "owner", 653 SYSCTL_DESCR("Owner id for set-id processes' cores."), 654 sysctl_security_setidcore, 0, &security_setidcore_owner, 655 0, 656 CTL_CREATE, CTL_EOL); 657 sysctl_createv(clog, 0, &rnode, NULL, 658 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 659 CTLTYPE_INT, "group", 660 SYSCTL_DESCR("Group id for set-id processes' cores."), 661 sysctl_security_setidcore, 0, &security_setidcore_group, 662 0, 663 CTL_CREATE, CTL_EOL); 664 sysctl_createv(clog, 0, &rnode, NULL, 665 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 666 CTLTYPE_INT, "mode", 667 SYSCTL_DESCR("Mode for set-id processes' cores."), 668 sysctl_security_setidcore, 0, &security_setidcore_mode, 669 0, 670 CTL_CREATE, CTL_EOL); 671 sysctl_createv(clog, 0, NULL, NULL, 672 CTLFLAG_IMMEDIATE|CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 673 CTLTYPE_INT, "no_sa_support", 674 SYSCTL_DESCR("0 if the kernel supports SA, otherwise " 675 "it doesn't"), 676 NULL, 1, NULL, 0, 677 CTL_KERN, CTL_CREATE, CTL_EOL); 678 /* kern.posix. */ 679 sysctl_createv(clog, 0, NULL, &rnode, 680 CTLFLAG_PERMANENT, 681 CTLTYPE_NODE, "posix", 682 SYSCTL_DESCR("POSIX options"), 683 NULL, 0, NULL, 0, 684 CTL_KERN, CTL_CREATE, CTL_EOL); 685 sysctl_createv(clog, 0, &rnode, NULL, 686 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 687 CTLTYPE_INT, "semmax", 688 SYSCTL_DESCR("Maximal number of semaphores"), 689 NULL, 0, &ksem_max, 0, 690 CTL_CREATE, CTL_EOL); 691 sysctl_createv(clog, 0, NULL, NULL, 692 CTLFLAG_PERMANENT, 693 CTLTYPE_STRING, "configname", 694 SYSCTL_DESCR("Name of config file"), 695 NULL, 0, __UNCONST(kernel_ident), 0, 696 CTL_KERN, CTL_CREATE, CTL_EOL); 697 } 698 699 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 700 { 701 u_int u; 702 u_quad_t q; 703 704 sysctl_createv(clog, 0, NULL, NULL, 705 CTLFLAG_PERMANENT, 706 CTLTYPE_NODE, "hw", NULL, 707 NULL, 0, NULL, 0, 708 CTL_HW, CTL_EOL); 709 710 sysctl_createv(clog, 0, NULL, NULL, 711 CTLFLAG_PERMANENT, 712 CTLTYPE_STRING, "machine", 713 SYSCTL_DESCR("Machine class"), 714 NULL, 0, machine, 0, 715 CTL_HW, HW_MACHINE, CTL_EOL); 716 sysctl_createv(clog, 0, NULL, NULL, 717 CTLFLAG_PERMANENT, 718 CTLTYPE_STRING, "model", 719 SYSCTL_DESCR("Machine model"), 720 NULL, 0, cpu_model, 0, 721 CTL_HW, HW_MODEL, CTL_EOL); 722 sysctl_createv(clog, 0, NULL, NULL, 723 CTLFLAG_PERMANENT, 724 CTLTYPE_INT, "ncpu", 725 SYSCTL_DESCR("Number of CPUs configured"), 726 NULL, 0, &ncpu, 0, 727 CTL_HW, HW_NCPU, CTL_EOL); 728 sysctl_createv(clog, 0, NULL, NULL, 729 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 730 CTLTYPE_INT, "byteorder", 731 SYSCTL_DESCR("System byte order"), 732 NULL, BYTE_ORDER, NULL, 0, 733 CTL_HW, HW_BYTEORDER, CTL_EOL); 734 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 735 UINT_MAX : physmem * PAGE_SIZE; 736 sysctl_createv(clog, 0, NULL, NULL, 737 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 738 CTLTYPE_INT, "physmem", 739 SYSCTL_DESCR("Bytes of physical memory"), 740 NULL, u, NULL, 0, 741 CTL_HW, HW_PHYSMEM, CTL_EOL); 742 sysctl_createv(clog, 0, NULL, NULL, 743 CTLFLAG_PERMANENT, 744 CTLTYPE_INT, "usermem", 745 SYSCTL_DESCR("Bytes of non-kernel memory"), 746 sysctl_hw_usermem, 0, NULL, 0, 747 CTL_HW, HW_USERMEM, CTL_EOL); 748 sysctl_createv(clog, 0, NULL, NULL, 749 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 750 CTLTYPE_INT, "pagesize", 751 SYSCTL_DESCR("Software page size"), 752 NULL, PAGE_SIZE, NULL, 0, 753 CTL_HW, HW_PAGESIZE, CTL_EOL); 754 sysctl_createv(clog, 0, NULL, NULL, 755 CTLFLAG_PERMANENT, 756 CTLTYPE_STRING, "machine_arch", 757 SYSCTL_DESCR("Machine CPU class"), 758 NULL, 0, machine_arch, 0, 759 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 760 sysctl_createv(clog, 0, NULL, NULL, 761 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 762 CTLTYPE_INT, "alignbytes", 763 SYSCTL_DESCR("Alignment constraint for all possible " 764 "data types"), 765 NULL, ALIGNBYTES, NULL, 0, 766 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 767 sysctl_createv(clog, 0, NULL, NULL, 768 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 769 CTLTYPE_STRING, "cnmagic", 770 SYSCTL_DESCR("Console magic key sequence"), 771 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 772 CTL_HW, HW_CNMAGIC, CTL_EOL); 773 q = (u_quad_t)physmem * PAGE_SIZE; 774 sysctl_createv(clog, 0, NULL, NULL, 775 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 776 CTLTYPE_QUAD, "physmem64", 777 SYSCTL_DESCR("Bytes of physical memory"), 778 NULL, q, NULL, 0, 779 CTL_HW, HW_PHYSMEM64, CTL_EOL); 780 sysctl_createv(clog, 0, NULL, NULL, 781 CTLFLAG_PERMANENT, 782 CTLTYPE_QUAD, "usermem64", 783 SYSCTL_DESCR("Bytes of non-kernel memory"), 784 sysctl_hw_usermem, 0, NULL, 0, 785 CTL_HW, HW_USERMEM64, CTL_EOL); 786 sysctl_createv(clog, 0, NULL, NULL, 787 CTLFLAG_PERMANENT, 788 CTLTYPE_INT, "ncpuonline", 789 SYSCTL_DESCR("Number of CPUs online"), 790 NULL, 0, &ncpuonline, 0, 791 CTL_HW, HW_NCPUONLINE, CTL_EOL); 792 } 793 794 #ifdef DEBUG 795 /* 796 * Debugging related system variables. 797 */ 798 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 799 struct ctldebug debug5, debug6, debug7, debug8, debug9; 800 struct ctldebug debug10, debug11, debug12, debug13, debug14; 801 struct ctldebug debug15, debug16, debug17, debug18, debug19; 802 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 803 &debug0, &debug1, &debug2, &debug3, &debug4, 804 &debug5, &debug6, &debug7, &debug8, &debug9, 805 &debug10, &debug11, &debug12, &debug13, &debug14, 806 &debug15, &debug16, &debug17, &debug18, &debug19, 807 }; 808 809 /* 810 * this setup routine is a replacement for debug_sysctl() 811 * 812 * note that it creates several nodes per defined debug variable 813 */ 814 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 815 { 816 struct ctldebug *cdp; 817 char nodename[20]; 818 int i; 819 820 /* 821 * two ways here: 822 * 823 * the "old" way (debug.name -> value) which was emulated by 824 * the sysctl(8) binary 825 * 826 * the new way, which the sysctl(8) binary was actually using 827 828 node debug 829 node debug.0 830 string debug.0.name 831 int debug.0.value 832 int debug.name 833 834 */ 835 836 sysctl_createv(clog, 0, NULL, NULL, 837 CTLFLAG_PERMANENT, 838 CTLTYPE_NODE, "debug", NULL, 839 NULL, 0, NULL, 0, 840 CTL_DEBUG, CTL_EOL); 841 842 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 843 cdp = debugvars[i]; 844 if (cdp->debugname == NULL || cdp->debugvar == NULL) 845 continue; 846 847 snprintf(nodename, sizeof(nodename), "debug%d", i); 848 sysctl_createv(clog, 0, NULL, NULL, 849 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 850 CTLTYPE_NODE, nodename, NULL, 851 NULL, 0, NULL, 0, 852 CTL_DEBUG, i, CTL_EOL); 853 sysctl_createv(clog, 0, NULL, NULL, 854 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 855 CTLTYPE_STRING, "name", NULL, 856 /*XXXUNCONST*/ 857 NULL, 0, __UNCONST(cdp->debugname), 0, 858 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 859 sysctl_createv(clog, 0, NULL, NULL, 860 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 861 CTLTYPE_INT, "value", NULL, 862 NULL, 0, cdp->debugvar, 0, 863 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 864 sysctl_createv(clog, 0, NULL, NULL, 865 CTLFLAG_PERMANENT, 866 CTLTYPE_INT, cdp->debugname, NULL, 867 NULL, 0, cdp->debugvar, 0, 868 CTL_DEBUG, CTL_CREATE, CTL_EOL); 869 } 870 } 871 #endif /* DEBUG */ 872 873 /* 874 * ******************************************************************** 875 * section 2: private node-specific helper routines. 876 * ******************************************************************** 877 */ 878 879 #ifdef DIAGNOSTIC 880 static int 881 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 882 { 883 int newtrig, error; 884 struct sysctlnode node; 885 886 newtrig = 0; 887 node = *rnode; 888 node.sysctl_data = &newtrig; 889 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 890 if (error || newp == NULL) 891 return (error); 892 893 if (newtrig != 0) 894 panic("Panic triggered"); 895 896 return (error); 897 } 898 #endif 899 900 /* 901 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 902 * new value is lower than desiredvnodes and then calls reinit 903 * routines that needs to adjust to the new value. 904 */ 905 static int 906 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 907 { 908 int error, new_vnodes, old_vnodes, new_max; 909 struct sysctlnode node; 910 911 new_vnodes = desiredvnodes; 912 node = *rnode; 913 node.sysctl_data = &new_vnodes; 914 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 915 if (error || newp == NULL) 916 return (error); 917 918 /* 919 * sysctl passes down unsigned values, require them 920 * to be positive 921 */ 922 if (new_vnodes <= 0) 923 return (EINVAL); 924 925 /* Limits: 75% of kmem and physical memory. */ 926 new_max = calc_cache_size(vmem_size(kmem_arena, VMEM_FREE|VMEM_ALLOC), 927 75, 75) / VNODE_COST; 928 if (new_vnodes > new_max) 929 new_vnodes = new_max; 930 931 old_vnodes = desiredvnodes; 932 desiredvnodes = new_vnodes; 933 if (new_vnodes < old_vnodes) { 934 error = vfs_drainvnodes(new_vnodes); 935 if (error) { 936 desiredvnodes = old_vnodes; 937 return (error); 938 } 939 } 940 vfs_reinit(); 941 nchreinit(); 942 943 return (0); 944 } 945 946 /* 947 * sysctl helper routine for rtc_offset - set time after changes 948 */ 949 static int 950 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 951 { 952 struct timespec ts, delta; 953 int error, new_rtc_offset; 954 struct sysctlnode node; 955 956 new_rtc_offset = rtc_offset; 957 node = *rnode; 958 node.sysctl_data = &new_rtc_offset; 959 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 960 if (error || newp == NULL) 961 return (error); 962 963 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 964 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 965 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 966 return (EPERM); 967 if (rtc_offset == new_rtc_offset) 968 return (0); 969 970 /* if we change the offset, adjust the time */ 971 nanotime(&ts); 972 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 973 delta.tv_nsec = 0; 974 timespecadd(&ts, &delta, &ts); 975 rtc_offset = new_rtc_offset; 976 return (settime(l->l_proc, &ts)); 977 } 978 979 /* 980 * sysctl helper routine for kern.maxproc. Ensures that the new 981 * values are not too low or too high. 982 */ 983 static int 984 sysctl_kern_maxproc(SYSCTLFN_ARGS) 985 { 986 int error, nmaxproc; 987 struct sysctlnode node; 988 989 nmaxproc = maxproc; 990 node = *rnode; 991 node.sysctl_data = &nmaxproc; 992 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 993 if (error || newp == NULL) 994 return (error); 995 996 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 997 return (EINVAL); 998 #ifdef __HAVE_CPU_MAXPROC 999 if (nmaxproc > cpu_maxproc()) 1000 return (EINVAL); 1001 #endif 1002 maxproc = nmaxproc; 1003 1004 return (0); 1005 } 1006 1007 /* 1008 * sysctl helper function for kern.hostid. The hostid is a long, but 1009 * we export it as an int, so we need to give it a little help. 1010 */ 1011 static int 1012 sysctl_kern_hostid(SYSCTLFN_ARGS) 1013 { 1014 int error, inthostid; 1015 struct sysctlnode node; 1016 1017 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1018 node = *rnode; 1019 node.sysctl_data = &inthostid; 1020 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1021 if (error || newp == NULL) 1022 return (error); 1023 1024 hostid = (unsigned)inthostid; 1025 1026 return (0); 1027 } 1028 1029 /* 1030 * sysctl helper function for kern.hostname and kern.domainnname. 1031 * resets the relevant recorded length when the underlying name is 1032 * changed. 1033 */ 1034 static int 1035 sysctl_setlen(SYSCTLFN_ARGS) 1036 { 1037 int error; 1038 1039 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1040 if (error || newp == NULL) 1041 return (error); 1042 1043 switch (rnode->sysctl_num) { 1044 case KERN_HOSTNAME: 1045 hostnamelen = strlen((const char*)rnode->sysctl_data); 1046 break; 1047 case KERN_DOMAINNAME: 1048 domainnamelen = strlen((const char*)rnode->sysctl_data); 1049 break; 1050 } 1051 1052 return (0); 1053 } 1054 1055 /* 1056 * sysctl helper routine for kern.clockrate. Assembles a struct on 1057 * the fly to be returned to the caller. 1058 */ 1059 static int 1060 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1061 { 1062 struct clockinfo clkinfo; 1063 struct sysctlnode node; 1064 1065 clkinfo.tick = tick; 1066 clkinfo.tickadj = tickadj; 1067 clkinfo.hz = hz; 1068 clkinfo.profhz = profhz; 1069 clkinfo.stathz = stathz ? stathz : hz; 1070 1071 node = *rnode; 1072 node.sysctl_data = &clkinfo; 1073 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1074 } 1075 1076 /* 1077 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1078 * former it merely checks the message buffer is set up. For the latter, 1079 * it also copies out the data if necessary. 1080 */ 1081 static int 1082 sysctl_msgbuf(SYSCTLFN_ARGS) 1083 { 1084 char *where = oldp; 1085 size_t len, maxlen; 1086 long beg, end; 1087 extern kmutex_t log_lock; 1088 int error; 1089 1090 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1091 msgbufenabled = 0; 1092 return (ENXIO); 1093 } 1094 1095 switch (rnode->sysctl_num) { 1096 case KERN_MSGBUFSIZE: { 1097 struct sysctlnode node = *rnode; 1098 int msg_bufs = (int)msgbufp->msg_bufs; 1099 node.sysctl_data = &msg_bufs; 1100 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1101 } 1102 case KERN_MSGBUF: 1103 break; 1104 default: 1105 return (EOPNOTSUPP); 1106 } 1107 1108 if (newp != NULL) 1109 return (EPERM); 1110 1111 if (oldp == NULL) { 1112 /* always return full buffer size */ 1113 *oldlenp = msgbufp->msg_bufs; 1114 return (0); 1115 } 1116 1117 sysctl_unlock(); 1118 1119 /* 1120 * First, copy from the write pointer to the end of 1121 * message buffer. 1122 */ 1123 error = 0; 1124 mutex_spin_enter(&log_lock); 1125 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1126 beg = msgbufp->msg_bufx; 1127 end = msgbufp->msg_bufs; 1128 mutex_spin_exit(&log_lock); 1129 1130 while (maxlen > 0) { 1131 len = MIN(end - beg, maxlen); 1132 if (len == 0) 1133 break; 1134 /* XXX unlocked, but hardly matters. */ 1135 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1136 if (error) 1137 break; 1138 where += len; 1139 maxlen -= len; 1140 1141 /* 1142 * ... then, copy from the beginning of message buffer to 1143 * the write pointer. 1144 */ 1145 beg = 0; 1146 end = msgbufp->msg_bufx; 1147 } 1148 1149 sysctl_relock(); 1150 return (error); 1151 } 1152 1153 /* 1154 * sysctl helper routine for kern.defcorename. In the case of a new 1155 * string being assigned, check that it's not a zero-length string. 1156 * (XXX the check in -current doesn't work, but do we really care?) 1157 */ 1158 static int 1159 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1160 { 1161 int error; 1162 char *newcorename; 1163 struct sysctlnode node; 1164 1165 newcorename = PNBUF_GET(); 1166 node = *rnode; 1167 node.sysctl_data = &newcorename[0]; 1168 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1169 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1170 if (error || newp == NULL) { 1171 goto done; 1172 } 1173 1174 /* 1175 * when sysctl_lookup() deals with a string, it's guaranteed 1176 * to come back nul terminated. So there. :) 1177 */ 1178 if (strlen(newcorename) == 0) { 1179 error = EINVAL; 1180 } else { 1181 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1182 error = 0; 1183 } 1184 done: 1185 PNBUF_PUT(newcorename); 1186 return error; 1187 } 1188 1189 /* 1190 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1191 * across all cpus. 1192 */ 1193 static int 1194 sysctl_kern_cptime(SYSCTLFN_ARGS) 1195 { 1196 struct sysctlnode node = *rnode; 1197 uint64_t *cp_time = NULL; 1198 int error, n = ncpu, i; 1199 struct cpu_info *ci; 1200 CPU_INFO_ITERATOR cii; 1201 1202 /* 1203 * if you specifically pass a buffer that is the size of the 1204 * sum, or if you are probing for the size, you get the "sum" 1205 * of cp_time (and the size thereof) across all processors. 1206 * 1207 * alternately, you can pass an additional mib number and get 1208 * cp_time for that particular processor. 1209 */ 1210 switch (namelen) { 1211 case 0: 1212 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1213 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1214 n = -1; /* SUM */ 1215 } 1216 else { 1217 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1218 n = -2; /* ALL */ 1219 } 1220 break; 1221 case 1: 1222 if (name[0] < 0 || name[0] >= n) 1223 return (ENOENT); /* ENOSUCHPROCESSOR */ 1224 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1225 n = name[0]; 1226 /* 1227 * adjust these so that sysctl_lookup() will be happy 1228 */ 1229 name++; 1230 namelen--; 1231 break; 1232 default: 1233 return (EINVAL); 1234 } 1235 1236 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1237 if (cp_time == NULL) 1238 return (ENOMEM); 1239 node.sysctl_data = cp_time; 1240 memset(cp_time, 0, node.sysctl_size); 1241 1242 for (CPU_INFO_FOREACH(cii, ci)) { 1243 if (n <= 0) { 1244 for (i = 0; i < CPUSTATES; i++) { 1245 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1246 } 1247 } 1248 /* 1249 * if a specific processor was requested and we just 1250 * did it, we're done here 1251 */ 1252 if (n == 0) 1253 break; 1254 /* 1255 * if doing "all", skip to next cp_time set for next processor 1256 */ 1257 if (n == -2) 1258 cp_time += CPUSTATES; 1259 /* 1260 * if we're doing a specific processor, we're one 1261 * processor closer 1262 */ 1263 if (n > 0) 1264 n--; 1265 } 1266 1267 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1268 kmem_free(node.sysctl_data, node.sysctl_size); 1269 return (error); 1270 } 1271 1272 #if NPTY > 0 1273 /* 1274 * sysctl helper routine for kern.maxptys. Ensures that any new value 1275 * is acceptable to the pty subsystem. 1276 */ 1277 static int 1278 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1279 { 1280 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1281 int error, xmax; 1282 struct sysctlnode node; 1283 1284 /* get current value of maxptys */ 1285 xmax = pty_maxptys(0, 0); 1286 1287 node = *rnode; 1288 node.sysctl_data = &xmax; 1289 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1290 if (error || newp == NULL) 1291 return (error); 1292 1293 if (xmax != pty_maxptys(xmax, 1)) 1294 return (EINVAL); 1295 1296 return (0); 1297 } 1298 #endif /* NPTY > 0 */ 1299 1300 /* 1301 * sysctl helper routine for kern.urandom node. Picks a random number 1302 * for you. 1303 */ 1304 static int 1305 sysctl_kern_urnd(SYSCTLFN_ARGS) 1306 { 1307 int v, rv; 1308 1309 rv = cprng_strong(sysctl_prng, &v, sizeof(v), 0); 1310 if (rv == sizeof(v)) { 1311 struct sysctlnode node = *rnode; 1312 node.sysctl_data = &v; 1313 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1314 } 1315 else 1316 return (EIO); /*XXX*/ 1317 } 1318 1319 /* 1320 * sysctl helper routine for kern.arandom node. Picks a random number 1321 * for you. 1322 */ 1323 static int 1324 sysctl_kern_arnd(SYSCTLFN_ARGS) 1325 { 1326 int error; 1327 void *v; 1328 struct sysctlnode node = *rnode; 1329 1330 if (*oldlenp == 0) 1331 return 0; 1332 /* 1333 * This code used to allow sucking 8192 bytes at a time out 1334 * of the kernel arc4random generator. Evidently there is some 1335 * very old OpenBSD application code that may try to do this. 1336 * 1337 * Note that this node is documented as type "INT" -- 4 or 8 1338 * bytes, not 8192. 1339 * 1340 * We continue to support this abuse of the "len" pointer here 1341 * but only 256 bytes at a time, as, anecdotally, the actual 1342 * application use here was to generate RC4 keys in userspace. 1343 * 1344 * Support for such large requests will probably be removed 1345 * entirely in the future. 1346 */ 1347 if (*oldlenp > 256) 1348 return E2BIG; 1349 1350 v = kmem_alloc(*oldlenp, KM_SLEEP); 1351 cprng_fast(v, *oldlenp); 1352 node.sysctl_data = v; 1353 node.sysctl_size = *oldlenp; 1354 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1355 kmem_free(v, *oldlenp); 1356 return error; 1357 } 1358 /* 1359 * sysctl helper routine to do kern.lwp.* work. 1360 */ 1361 static int 1362 sysctl_kern_lwp(SYSCTLFN_ARGS) 1363 { 1364 struct kinfo_lwp klwp; 1365 struct proc *p; 1366 struct lwp *l2, *l3; 1367 char *where, *dp; 1368 int pid, elem_size, elem_count; 1369 int buflen, needed, error; 1370 bool gotit; 1371 1372 if (namelen == 1 && name[0] == CTL_QUERY) 1373 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1374 1375 dp = where = oldp; 1376 buflen = where != NULL ? *oldlenp : 0; 1377 error = needed = 0; 1378 1379 if (newp != NULL || namelen != 3) 1380 return (EINVAL); 1381 pid = name[0]; 1382 elem_size = name[1]; 1383 elem_count = name[2]; 1384 1385 sysctl_unlock(); 1386 if (pid == -1) { 1387 mutex_enter(proc_lock); 1388 PROCLIST_FOREACH(p, &allproc) { 1389 /* Grab a hold on the process. */ 1390 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1391 continue; 1392 } 1393 mutex_exit(proc_lock); 1394 1395 mutex_enter(p->p_lock); 1396 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1397 if (buflen >= elem_size && elem_count > 0) { 1398 lwp_lock(l2); 1399 fill_lwp(l2, &klwp); 1400 lwp_unlock(l2); 1401 mutex_exit(p->p_lock); 1402 1403 /* 1404 * Copy out elem_size, but not 1405 * larger than the size of a 1406 * struct kinfo_proc2. 1407 */ 1408 error = dcopyout(l, &klwp, dp, 1409 min(sizeof(klwp), elem_size)); 1410 if (error) { 1411 rw_exit(&p->p_reflock); 1412 goto cleanup; 1413 } 1414 mutex_enter(p->p_lock); 1415 LIST_FOREACH(l3, &p->p_lwps, 1416 l_sibling) { 1417 if (l2 == l3) 1418 break; 1419 } 1420 if (l3 == NULL) { 1421 mutex_exit(p->p_lock); 1422 rw_exit(&p->p_reflock); 1423 error = EAGAIN; 1424 goto cleanup; 1425 } 1426 dp += elem_size; 1427 buflen -= elem_size; 1428 elem_count--; 1429 } 1430 needed += elem_size; 1431 } 1432 mutex_exit(p->p_lock); 1433 1434 /* Drop reference to process. */ 1435 mutex_enter(proc_lock); 1436 rw_exit(&p->p_reflock); 1437 } 1438 mutex_exit(proc_lock); 1439 } else { 1440 mutex_enter(proc_lock); 1441 p = proc_find(pid); 1442 if (p == NULL) { 1443 error = ESRCH; 1444 mutex_exit(proc_lock); 1445 goto cleanup; 1446 } 1447 /* Grab a hold on the process. */ 1448 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1449 mutex_exit(proc_lock); 1450 if (!gotit) { 1451 error = ESRCH; 1452 goto cleanup; 1453 } 1454 1455 mutex_enter(p->p_lock); 1456 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1457 if (buflen >= elem_size && elem_count > 0) { 1458 lwp_lock(l2); 1459 fill_lwp(l2, &klwp); 1460 lwp_unlock(l2); 1461 mutex_exit(p->p_lock); 1462 /* 1463 * Copy out elem_size, but not larger than 1464 * the size of a struct kinfo_proc2. 1465 */ 1466 error = dcopyout(l, &klwp, dp, 1467 min(sizeof(klwp), elem_size)); 1468 if (error) { 1469 rw_exit(&p->p_reflock); 1470 goto cleanup; 1471 } 1472 mutex_enter(p->p_lock); 1473 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1474 if (l2 == l3) 1475 break; 1476 } 1477 if (l3 == NULL) { 1478 mutex_exit(p->p_lock); 1479 rw_exit(&p->p_reflock); 1480 error = EAGAIN; 1481 goto cleanup; 1482 } 1483 dp += elem_size; 1484 buflen -= elem_size; 1485 elem_count--; 1486 } 1487 needed += elem_size; 1488 } 1489 mutex_exit(p->p_lock); 1490 1491 /* Drop reference to process. */ 1492 rw_exit(&p->p_reflock); 1493 } 1494 1495 if (where != NULL) { 1496 *oldlenp = dp - where; 1497 if (needed > *oldlenp) { 1498 sysctl_relock(); 1499 return (ENOMEM); 1500 } 1501 } else { 1502 needed += KERN_LWPSLOP; 1503 *oldlenp = needed; 1504 } 1505 error = 0; 1506 cleanup: 1507 sysctl_relock(); 1508 return (error); 1509 } 1510 1511 /* 1512 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1513 * given value is not too large or two small, and is at least one 1514 * timer tick if not zero. 1515 */ 1516 static int 1517 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1518 { 1519 /* userland sees value in ms, internally is in ticks */ 1520 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1521 int error, timo, lsleep; 1522 struct sysctlnode node; 1523 1524 lsleep = forkfsleep * 1000 / hz; 1525 node = *rnode; 1526 node.sysctl_data = &lsleep; 1527 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1528 if (error || newp == NULL) 1529 return (error); 1530 1531 /* refuse negative values, and overly 'long time' */ 1532 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1533 return (EINVAL); 1534 1535 timo = mstohz(lsleep); 1536 1537 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1538 if (lsleep != 0 && timo == 0) 1539 forkfsleep = 1; 1540 else 1541 forkfsleep = timo; 1542 1543 return (0); 1544 } 1545 1546 /* 1547 * sysctl helper routine for kern.root_partition 1548 */ 1549 static int 1550 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1551 { 1552 int rootpart = DISKPART(rootdev); 1553 struct sysctlnode node = *rnode; 1554 1555 node.sysctl_data = &rootpart; 1556 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1557 } 1558 1559 /* 1560 * sysctl helper function for kern.drivers 1561 */ 1562 static int 1563 sysctl_kern_drivers(SYSCTLFN_ARGS) 1564 { 1565 int error; 1566 size_t buflen; 1567 struct kinfo_drivers kd; 1568 char *start, *where; 1569 const char *dname; 1570 int i; 1571 extern struct devsw_conv *devsw_conv; 1572 extern int max_devsw_convs; 1573 1574 start = where = oldp; 1575 buflen = *oldlenp; 1576 if (where == NULL) { 1577 *oldlenp = max_devsw_convs * sizeof kd; 1578 return 0; 1579 } 1580 1581 /* 1582 * An array of kinfo_drivers structures 1583 */ 1584 error = 0; 1585 sysctl_unlock(); 1586 mutex_enter(&device_lock); 1587 for (i = 0; i < max_devsw_convs; i++) { 1588 dname = devsw_conv[i].d_name; 1589 if (dname == NULL) 1590 continue; 1591 if (buflen < sizeof kd) { 1592 error = ENOMEM; 1593 break; 1594 } 1595 memset(&kd, 0, sizeof(kd)); 1596 kd.d_bmajor = devsw_conv[i].d_bmajor; 1597 kd.d_cmajor = devsw_conv[i].d_cmajor; 1598 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1599 mutex_exit(&device_lock); 1600 error = dcopyout(l, &kd, where, sizeof kd); 1601 mutex_enter(&device_lock); 1602 if (error != 0) 1603 break; 1604 buflen -= sizeof kd; 1605 where += sizeof kd; 1606 } 1607 mutex_exit(&device_lock); 1608 sysctl_relock(); 1609 *oldlenp = where - start; 1610 return error; 1611 } 1612 1613 static int 1614 sysctl_security_setidcore(SYSCTLFN_ARGS) 1615 { 1616 int newsize, error; 1617 struct sysctlnode node; 1618 1619 node = *rnode; 1620 node.sysctl_data = &newsize; 1621 newsize = *(int *)rnode->sysctl_data; 1622 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1623 if (error || newp == NULL) 1624 return error; 1625 1626 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 1627 0, NULL, NULL, NULL)) 1628 return (EPERM); 1629 1630 *(int *)rnode->sysctl_data = newsize; 1631 1632 return 0; 1633 } 1634 1635 static int 1636 sysctl_security_setidcorename(SYSCTLFN_ARGS) 1637 { 1638 int error; 1639 char *newsetidcorename; 1640 struct sysctlnode node; 1641 1642 newsetidcorename = PNBUF_GET(); 1643 node = *rnode; 1644 node.sysctl_data = newsetidcorename; 1645 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1646 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1647 if (error || newp == NULL) { 1648 goto out; 1649 } 1650 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 1651 0, NULL, NULL, NULL)) { 1652 error = EPERM; 1653 goto out; 1654 } 1655 if (strlen(newsetidcorename) == 0) { 1656 error = EINVAL; 1657 goto out; 1658 } 1659 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1660 out: 1661 PNBUF_PUT(newsetidcorename); 1662 return error; 1663 } 1664 1665 /* 1666 * sysctl helper routine for kern.cp_id node. Maps cpus to their 1667 * cpuids. 1668 */ 1669 static int 1670 sysctl_kern_cpid(SYSCTLFN_ARGS) 1671 { 1672 struct sysctlnode node = *rnode; 1673 uint64_t *cp_id = NULL; 1674 int error, n = ncpu; 1675 struct cpu_info *ci; 1676 CPU_INFO_ITERATOR cii; 1677 1678 /* 1679 * Here you may either retrieve a single cpu id or the whole 1680 * set. The size you get back when probing depends on what 1681 * you ask for. 1682 */ 1683 switch (namelen) { 1684 case 0: 1685 node.sysctl_size = n * sizeof(uint64_t); 1686 n = -2; /* ALL */ 1687 break; 1688 case 1: 1689 if (name[0] < 0 || name[0] >= n) 1690 return (ENOENT); /* ENOSUCHPROCESSOR */ 1691 node.sysctl_size = sizeof(uint64_t); 1692 n = name[0]; 1693 /* 1694 * adjust these so that sysctl_lookup() will be happy 1695 */ 1696 name++; 1697 namelen--; 1698 break; 1699 default: 1700 return (EINVAL); 1701 } 1702 1703 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 1704 if (cp_id == NULL) 1705 return (ENOMEM); 1706 node.sysctl_data = cp_id; 1707 memset(cp_id, 0, node.sysctl_size); 1708 1709 for (CPU_INFO_FOREACH(cii, ci)) { 1710 if (n <= 0) 1711 cp_id[0] = cpu_index(ci); 1712 /* 1713 * if a specific processor was requested and we just 1714 * did it, we're done here 1715 */ 1716 if (n == 0) 1717 break; 1718 /* 1719 * if doing "all", skip to next cp_id slot for next processor 1720 */ 1721 if (n == -2) 1722 cp_id++; 1723 /* 1724 * if we're doing a specific processor, we're one 1725 * processor closer 1726 */ 1727 if (n > 0) 1728 n--; 1729 } 1730 1731 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1732 kmem_free(node.sysctl_data, node.sysctl_size); 1733 return (error); 1734 } 1735 1736 /* 1737 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 1738 * calculate on the fly taking into account integer overflow and the 1739 * current wired count. 1740 */ 1741 static int 1742 sysctl_hw_usermem(SYSCTLFN_ARGS) 1743 { 1744 u_int ui; 1745 u_quad_t uq; 1746 struct sysctlnode node; 1747 1748 node = *rnode; 1749 switch (rnode->sysctl_num) { 1750 case HW_USERMEM: 1751 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1752 ui = UINT_MAX; 1753 else 1754 ui *= PAGE_SIZE; 1755 node.sysctl_data = &ui; 1756 break; 1757 case HW_USERMEM64: 1758 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1759 node.sysctl_data = &uq; 1760 break; 1761 default: 1762 return (EINVAL); 1763 } 1764 1765 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1766 } 1767 1768 /* 1769 * sysctl helper routine for kern.cnmagic node. Pulls the old value 1770 * out, encoded, and stuffs the new value in for decoding. 1771 */ 1772 static int 1773 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 1774 { 1775 char magic[CNS_LEN]; 1776 int error; 1777 struct sysctlnode node; 1778 1779 if (oldp) 1780 cn_get_magic(magic, CNS_LEN); 1781 node = *rnode; 1782 node.sysctl_data = &magic[0]; 1783 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1784 if (error || newp == NULL) 1785 return (error); 1786 1787 return (cn_set_magic(magic)); 1788 } 1789 1790 /* 1791 * ******************************************************************** 1792 * section 3: public helper routines that are used for more than one 1793 * node 1794 * ******************************************************************** 1795 */ 1796 1797 /* 1798 * sysctl helper routine for the kern.root_device node and some ports' 1799 * machdep.root_device nodes. 1800 */ 1801 int 1802 sysctl_root_device(SYSCTLFN_ARGS) 1803 { 1804 struct sysctlnode node; 1805 1806 node = *rnode; 1807 node.sysctl_data = __UNCONST(device_xname(root_device)); 1808 node.sysctl_size = strlen(device_xname(root_device)) + 1; 1809 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1810 } 1811 1812 /* 1813 * sysctl helper routine for kern.consdev, dependent on the current 1814 * state of the console. Also used for machdep.console_device on some 1815 * ports. 1816 */ 1817 int 1818 sysctl_consdev(SYSCTLFN_ARGS) 1819 { 1820 dev_t consdev; 1821 uint32_t oconsdev; 1822 struct sysctlnode node; 1823 1824 if (cn_tab != NULL) 1825 consdev = cn_tab->cn_dev; 1826 else 1827 consdev = NODEV; 1828 node = *rnode; 1829 switch (*oldlenp) { 1830 case sizeof(consdev): 1831 node.sysctl_data = &consdev; 1832 node.sysctl_size = sizeof(consdev); 1833 break; 1834 case sizeof(oconsdev): 1835 oconsdev = (uint32_t)consdev; 1836 node.sysctl_data = &oconsdev; 1837 node.sysctl_size = sizeof(oconsdev); 1838 break; 1839 default: 1840 return EINVAL; 1841 } 1842 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1843 } 1844 1845 /* 1846 * ******************************************************************** 1847 * section 4: support for some helpers 1848 * ******************************************************************** 1849 */ 1850 1851 1852 /* 1853 * Fill in a kinfo_lwp structure for the specified lwp. 1854 */ 1855 static void 1856 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 1857 { 1858 struct proc *p = l->l_proc; 1859 struct timeval tv; 1860 1861 KASSERT(lwp_locked(l, NULL)); 1862 1863 memset(kl, 0, sizeof(*kl)); 1864 1865 kl->l_forw = 0; 1866 kl->l_back = 0; 1867 kl->l_laddr = PTRTOUINT64(l); 1868 kl->l_addr = PTRTOUINT64(l->l_addr); 1869 kl->l_stat = l->l_stat; 1870 kl->l_lid = l->l_lid; 1871 kl->l_flag = L_INMEM; 1872 kl->l_flag |= sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 1873 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 1874 1875 kl->l_swtime = l->l_swtime; 1876 kl->l_slptime = l->l_slptime; 1877 if (l->l_stat == LSONPROC) 1878 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 1879 else 1880 kl->l_schedflags = 0; 1881 kl->l_priority = lwp_eprio(l); 1882 kl->l_usrpri = l->l_priority; 1883 if (l->l_wchan) 1884 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 1885 kl->l_wchan = PTRTOUINT64(l->l_wchan); 1886 kl->l_cpuid = cpu_index(l->l_cpu); 1887 bintime2timeval(&l->l_rtime, &tv); 1888 kl->l_rtime_sec = tv.tv_sec; 1889 kl->l_rtime_usec = tv.tv_usec; 1890 kl->l_cpticks = l->l_cpticks; 1891 kl->l_pctcpu = l->l_pctcpu; 1892 kl->l_pid = p->p_pid; 1893 if (l->l_name == NULL) 1894 kl->l_name[0] = '\0'; 1895 else 1896 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 1897 } 1898
Indexes created Wed Oct 01 15:09:59 GMT 2025