init_sysctl.c revision 1.182
1 /* $NetBSD: init_sysctl.c,v 1.182 2011/07/23 11:38:28 jym 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 1.182 2011/07/23 11:38:28 jym Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_compat_netbsd.h" 37 #include "opt_modular.h" 38 #include "opt_sa.h" 39 #include "opt_posix.h" 40 #include "pty.h" 41 #include "rnd.h" 42 43 #include <sys/types.h> 44 #include <sys/param.h> 45 #include <sys/sysctl.h> 46 #include <sys/cpu.h> 47 #include <sys/errno.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/unistd.h> 51 #include <sys/disklabel.h> 52 #include <sys/rnd.h> 53 #include <sys/vnode.h> 54 #include <sys/mount.h> 55 #include <sys/namei.h> 56 #include <sys/msgbuf.h> 57 #include <dev/cons.h> 58 #include <sys/socketvar.h> 59 #include <sys/file.h> 60 #include <sys/filedesc.h> 61 #include <sys/tty.h> 62 #include <sys/kmem.h> 63 #include <sys/resource.h> 64 #include <sys/resourcevar.h> 65 #include <sys/exec.h> 66 #include <sys/conf.h> 67 #include <sys/device.h> 68 #include <sys/stat.h> 69 #include <sys/kauth.h> 70 #include <sys/ktrace.h> 71 #include <sys/ksem.h> 72 73 #ifdef COMPAT_50 74 #include <compat/sys/time.h> 75 #endif 76 77 #ifdef KERN_SA 78 #include <sys/sa.h> 79 #endif 80 81 #include <sys/cpu.h> 82 83 #if defined(MODULAR) || defined(P1003_1B_SEMAPHORE) 84 int posix_semaphores = 200112; 85 #else 86 int posix_semaphores; 87 #endif 88 89 int security_setidcore_dump; 90 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 91 uid_t security_setidcore_owner = 0; 92 gid_t security_setidcore_group = 0; 93 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 94 95 static const u_int sysctl_flagmap[] = { 96 PK_ADVLOCK, P_ADVLOCK, 97 PK_EXEC, P_EXEC, 98 PK_NOCLDWAIT, P_NOCLDWAIT, 99 PK_32, P_32, 100 PK_CLDSIGIGN, P_CLDSIGIGN, 101 PK_SUGID, P_SUGID, 102 0 103 }; 104 105 static const u_int sysctl_sflagmap[] = { 106 PS_NOCLDSTOP, P_NOCLDSTOP, 107 PS_WEXIT, P_WEXIT, 108 PS_STOPFORK, P_STOPFORK, 109 PS_STOPEXEC, P_STOPEXEC, 110 PS_STOPEXIT, P_STOPEXIT, 111 0 112 }; 113 114 static const u_int sysctl_slflagmap[] = { 115 PSL_TRACED, P_TRACED, 116 PSL_FSTRACE, P_FSTRACE, 117 PSL_CHTRACED, P_CHTRACED, 118 PSL_SYSCALL, P_SYSCALL, 119 0 120 }; 121 122 static const u_int sysctl_lflagmap[] = { 123 PL_CONTROLT, P_CONTROLT, 124 PL_PPWAIT, P_PPWAIT, 125 0 126 }; 127 128 static const u_int sysctl_stflagmap[] = { 129 PST_PROFIL, P_PROFIL, 130 0 131 132 }; 133 134 static const u_int sysctl_lwpprflagmap[] = { 135 LPR_DETACHED, L_DETACHED, 136 0 137 }; 138 139 /* 140 * try over estimating by 5 procs/lwps 141 */ 142 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 143 144 static int dcopyout(struct lwp *, const void *, void *, size_t); 145 146 static int 147 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 148 { 149 int error; 150 151 error = copyout(kaddr, uaddr, len); 152 ktrmibio(-1, UIO_READ, uaddr, len, error); 153 154 return error; 155 } 156 157 #ifdef DIAGNOSTIC 158 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 159 #endif 160 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 161 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 162 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 163 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 164 static int sysctl_setlen(SYSCTLFN_PROTO); 165 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 166 static int sysctl_msgbuf(SYSCTLFN_PROTO); 167 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 168 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 169 #if NPTY > 0 170 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 171 #endif /* NPTY > 0 */ 172 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 173 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 174 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 175 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 176 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 177 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 178 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 179 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 180 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 181 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 182 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 183 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 184 185 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 186 187 /* 188 * ******************************************************************** 189 * section 1: setup routines 190 * ******************************************************************** 191 * These functions are stuffed into a link set for sysctl setup 192 * functions. They're never called or referenced from anywhere else. 193 * ******************************************************************** 194 */ 195 196 /* 197 * this setup routine is a replacement for kern_sysctl() 198 */ 199 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 200 { 201 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 202 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 203 extern int dumponpanic; /* defined in kern/subr_prf.c */ 204 const struct sysctlnode *rnode; 205 206 sysctl_createv(clog, 0, NULL, NULL, 207 CTLFLAG_PERMANENT, 208 CTLTYPE_NODE, "kern", NULL, 209 NULL, 0, NULL, 0, 210 CTL_KERN, CTL_EOL); 211 212 sysctl_createv(clog, 0, NULL, NULL, 213 CTLFLAG_PERMANENT, 214 CTLTYPE_STRING, "ostype", 215 SYSCTL_DESCR("Operating system type"), 216 NULL, 0, __UNCONST(&ostype), 0, 217 CTL_KERN, KERN_OSTYPE, CTL_EOL); 218 sysctl_createv(clog, 0, NULL, NULL, 219 CTLFLAG_PERMANENT, 220 CTLTYPE_STRING, "osrelease", 221 SYSCTL_DESCR("Operating system release"), 222 NULL, 0, __UNCONST(&osrelease), 0, 223 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 224 sysctl_createv(clog, 0, NULL, NULL, 225 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 226 CTLTYPE_INT, "osrevision", 227 SYSCTL_DESCR("Operating system revision"), 228 NULL, __NetBSD_Version__, NULL, 0, 229 CTL_KERN, KERN_OSREV, CTL_EOL); 230 sysctl_createv(clog, 0, NULL, NULL, 231 CTLFLAG_PERMANENT, 232 CTLTYPE_STRING, "version", 233 SYSCTL_DESCR("Kernel version"), 234 NULL, 0, __UNCONST(&version), 0, 235 CTL_KERN, KERN_VERSION, CTL_EOL); 236 sysctl_createv(clog, 0, NULL, NULL, 237 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 238 CTLTYPE_INT, "maxvnodes", 239 SYSCTL_DESCR("Maximum number of vnodes"), 240 sysctl_kern_maxvnodes, 0, NULL, 0, 241 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 242 sysctl_createv(clog, 0, NULL, NULL, 243 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 244 CTLTYPE_INT, "maxproc", 245 SYSCTL_DESCR("Maximum number of simultaneous processes"), 246 sysctl_kern_maxproc, 0, NULL, 0, 247 CTL_KERN, KERN_MAXPROC, CTL_EOL); 248 sysctl_createv(clog, 0, NULL, NULL, 249 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 250 CTLTYPE_INT, "maxfiles", 251 SYSCTL_DESCR("Maximum number of open files"), 252 NULL, 0, &maxfiles, 0, 253 CTL_KERN, KERN_MAXFILES, CTL_EOL); 254 sysctl_createv(clog, 0, NULL, NULL, 255 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 256 CTLTYPE_INT, "argmax", 257 SYSCTL_DESCR("Maximum number of bytes of arguments to " 258 "execve(2)"), 259 NULL, ARG_MAX, NULL, 0, 260 CTL_KERN, KERN_ARGMAX, CTL_EOL); 261 sysctl_createv(clog, 0, NULL, NULL, 262 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 263 CTLTYPE_STRING, "hostname", 264 SYSCTL_DESCR("System hostname"), 265 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 266 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 267 sysctl_createv(clog, 0, NULL, NULL, 268 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 269 CTLTYPE_INT, "hostid", 270 SYSCTL_DESCR("System host ID number"), 271 sysctl_kern_hostid, 0, NULL, 0, 272 CTL_KERN, KERN_HOSTID, CTL_EOL); 273 sysctl_createv(clog, 0, NULL, NULL, 274 CTLFLAG_PERMANENT, 275 CTLTYPE_STRUCT, "clockrate", 276 SYSCTL_DESCR("Kernel clock rates"), 277 sysctl_kern_clockrate, 0, NULL, 278 sizeof(struct clockinfo), 279 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 280 sysctl_createv(clog, 0, NULL, NULL, 281 CTLFLAG_PERMANENT, 282 CTLTYPE_INT, "hardclock_ticks", 283 SYSCTL_DESCR("Number of hardclock ticks"), 284 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 285 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 286 sysctl_createv(clog, 0, NULL, NULL, 287 CTLFLAG_PERMANENT, 288 CTLTYPE_STRUCT, "vnode", 289 SYSCTL_DESCR("System vnode table"), 290 sysctl_kern_vnode, 0, NULL, 0, 291 CTL_KERN, KERN_VNODE, CTL_EOL); 292 #ifndef GPROF 293 sysctl_createv(clog, 0, NULL, NULL, 294 CTLFLAG_PERMANENT, 295 CTLTYPE_NODE, "profiling", 296 SYSCTL_DESCR("Profiling information (not available)"), 297 sysctl_notavail, 0, NULL, 0, 298 CTL_KERN, KERN_PROF, CTL_EOL); 299 #endif 300 sysctl_createv(clog, 0, NULL, NULL, 301 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 302 CTLTYPE_INT, "posix1version", 303 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 304 "with which the operating system attempts " 305 "to comply"), 306 NULL, _POSIX_VERSION, NULL, 0, 307 CTL_KERN, KERN_POSIX1, CTL_EOL); 308 sysctl_createv(clog, 0, NULL, NULL, 309 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 310 CTLTYPE_INT, "ngroups", 311 SYSCTL_DESCR("Maximum number of supplemental groups"), 312 NULL, NGROUPS_MAX, NULL, 0, 313 CTL_KERN, KERN_NGROUPS, CTL_EOL); 314 sysctl_createv(clog, 0, NULL, NULL, 315 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 316 CTLTYPE_INT, "job_control", 317 SYSCTL_DESCR("Whether job control is available"), 318 NULL, 1, NULL, 0, 319 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 320 sysctl_createv(clog, 0, NULL, NULL, 321 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 322 CTLTYPE_INT, "saved_ids", 323 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 324 "available"), NULL, 325 #ifdef _POSIX_SAVED_IDS 326 1, 327 #else /* _POSIX_SAVED_IDS */ 328 0, 329 #endif /* _POSIX_SAVED_IDS */ 330 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 331 sysctl_createv(clog, 0, NULL, NULL, 332 CTLFLAG_PERMANENT|CTLFLAG_HEX, 333 CTLTYPE_INT, "boothowto", 334 SYSCTL_DESCR("Flags from boot loader"), 335 NULL, 0, &boothowto, sizeof(boothowto), 336 CTL_KERN, CTL_CREATE, CTL_EOL); 337 sysctl_createv(clog, 0, NULL, NULL, 338 CTLFLAG_PERMANENT, 339 CTLTYPE_STRUCT, "boottime", 340 SYSCTL_DESCR("System boot time"), 341 NULL, 0, &boottime, sizeof(boottime), 342 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 343 #ifdef COMPAT_50 344 { 345 extern struct timeval50 boottime50; 346 sysctl_createv(clog, 0, NULL, NULL, 347 CTLFLAG_PERMANENT, 348 CTLTYPE_STRUCT, "oboottime", 349 SYSCTL_DESCR("System boot time"), 350 NULL, 0, &boottime50, sizeof(boottime50), 351 CTL_KERN, KERN_OBOOTTIME, CTL_EOL); 352 } 353 #endif 354 sysctl_createv(clog, 0, NULL, NULL, 355 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 356 CTLTYPE_STRING, "domainname", 357 SYSCTL_DESCR("YP domain name"), 358 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 359 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 360 sysctl_createv(clog, 0, NULL, NULL, 361 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 362 CTLTYPE_INT, "maxpartitions", 363 SYSCTL_DESCR("Maximum number of partitions allowed per " 364 "disk"), 365 NULL, MAXPARTITIONS, NULL, 0, 366 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 367 sysctl_createv(clog, 0, NULL, NULL, 368 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 369 CTLTYPE_INT, "rawpartition", 370 SYSCTL_DESCR("Raw partition of a disk"), 371 NULL, RAW_PART, NULL, 0, 372 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 373 sysctl_createv(clog, 0, NULL, NULL, 374 CTLFLAG_PERMANENT, 375 CTLTYPE_STRUCT, "timex", NULL, 376 sysctl_notavail, 0, NULL, 0, 377 CTL_KERN, KERN_TIMEX, CTL_EOL); 378 sysctl_createv(clog, 0, NULL, NULL, 379 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 380 CTLTYPE_INT, "rtc_offset", 381 SYSCTL_DESCR("Offset of real time clock from UTC in " 382 "minutes"), 383 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 384 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 385 sysctl_createv(clog, 0, NULL, NULL, 386 CTLFLAG_PERMANENT, 387 CTLTYPE_STRING, "root_device", 388 SYSCTL_DESCR("Name of the root device"), 389 sysctl_root_device, 0, NULL, 0, 390 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 391 sysctl_createv(clog, 0, NULL, NULL, 392 CTLFLAG_PERMANENT, 393 CTLTYPE_INT, "msgbufsize", 394 SYSCTL_DESCR("Size of the kernel message buffer"), 395 sysctl_msgbuf, 0, NULL, 0, 396 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 397 sysctl_createv(clog, 0, NULL, NULL, 398 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 399 CTLTYPE_INT, "fsync", 400 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 401 "Synchronization Option is available on " 402 "this system"), 403 NULL, 1, NULL, 0, 404 CTL_KERN, KERN_FSYNC, CTL_EOL); 405 sysctl_createv(clog, 0, NULL, NULL, 406 CTLFLAG_PERMANENT, 407 CTLTYPE_NODE, "ipc", 408 SYSCTL_DESCR("SysV IPC options"), 409 NULL, 0, NULL, 0, 410 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 411 sysctl_createv(clog, 0, NULL, NULL, 412 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 413 CTLTYPE_INT, "sysvmsg", 414 SYSCTL_DESCR("System V style message support available"), 415 NULL, 416 #ifdef SYSVMSG 417 1, 418 #else /* SYSVMSG */ 419 0, 420 #endif /* SYSVMSG */ 421 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 422 sysctl_createv(clog, 0, NULL, NULL, 423 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 424 CTLTYPE_INT, "sysvsem", 425 SYSCTL_DESCR("System V style semaphore support " 426 "available"), NULL, 427 #ifdef SYSVSEM 428 1, 429 #else /* SYSVSEM */ 430 0, 431 #endif /* SYSVSEM */ 432 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 433 sysctl_createv(clog, 0, NULL, NULL, 434 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 435 CTLTYPE_INT, "sysvshm", 436 SYSCTL_DESCR("System V style shared memory support " 437 "available"), NULL, 438 #ifdef SYSVSHM 439 1, 440 #else /* SYSVSHM */ 441 0, 442 #endif /* SYSVSHM */ 443 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 444 sysctl_createv(clog, 0, NULL, NULL, 445 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 446 CTLTYPE_INT, "synchronized_io", 447 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 448 "I/O Option is available on this system"), 449 NULL, 1, NULL, 0, 450 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 451 sysctl_createv(clog, 0, NULL, NULL, 452 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 453 CTLTYPE_INT, "iov_max", 454 SYSCTL_DESCR("Maximum number of iovec structures per " 455 "process"), 456 NULL, IOV_MAX, NULL, 0, 457 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 458 sysctl_createv(clog, 0, NULL, NULL, 459 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 460 CTLTYPE_INT, "mapped_files", 461 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 462 "Files Option is available on this system"), 463 NULL, 1, NULL, 0, 464 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 465 sysctl_createv(clog, 0, NULL, NULL, 466 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 467 CTLTYPE_INT, "memlock", 468 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 469 "Locking Option is available on this " 470 "system"), 471 NULL, 1, NULL, 0, 472 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 473 sysctl_createv(clog, 0, NULL, NULL, 474 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 475 CTLTYPE_INT, "memlock_range", 476 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 477 "Locking Option is available on this " 478 "system"), 479 NULL, 1, NULL, 0, 480 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 481 sysctl_createv(clog, 0, NULL, NULL, 482 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 483 CTLTYPE_INT, "memory_protection", 484 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 485 "Protection Option is available on this " 486 "system"), 487 NULL, 1, NULL, 0, 488 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 489 sysctl_createv(clog, 0, NULL, NULL, 490 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 491 CTLTYPE_INT, "login_name_max", 492 SYSCTL_DESCR("Maximum login name length"), 493 NULL, LOGIN_NAME_MAX, NULL, 0, 494 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 495 sysctl_createv(clog, 0, NULL, NULL, 496 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 497 CTLTYPE_STRING, "defcorename", 498 SYSCTL_DESCR("Default core file name"), 499 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 500 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 501 sysctl_createv(clog, 0, NULL, NULL, 502 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 503 CTLTYPE_INT, "logsigexit", 504 SYSCTL_DESCR("Log process exit when caused by signals"), 505 NULL, 0, &kern_logsigexit, 0, 506 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 507 sysctl_createv(clog, 0, NULL, NULL, 508 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 509 CTLTYPE_INT, "fscale", 510 SYSCTL_DESCR("Kernel fixed-point scale factor"), 511 NULL, FSCALE, NULL, 0, 512 CTL_KERN, KERN_FSCALE, CTL_EOL); 513 sysctl_createv(clog, 0, NULL, NULL, 514 CTLFLAG_PERMANENT, 515 CTLTYPE_INT, "ccpu", 516 SYSCTL_DESCR("Scheduler exponential decay value"), 517 NULL, 0, &ccpu, 0, 518 CTL_KERN, KERN_CCPU, CTL_EOL); 519 sysctl_createv(clog, 0, NULL, NULL, 520 CTLFLAG_PERMANENT, 521 CTLTYPE_STRUCT, "cp_time", 522 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 523 sysctl_kern_cptime, 0, NULL, 0, 524 CTL_KERN, KERN_CP_TIME, CTL_EOL); 525 sysctl_createv(clog, 0, NULL, NULL, 526 CTLFLAG_PERMANENT, 527 CTLTYPE_INT, "msgbuf", 528 SYSCTL_DESCR("Kernel message buffer"), 529 sysctl_msgbuf, 0, NULL, 0, 530 CTL_KERN, KERN_MSGBUF, CTL_EOL); 531 sysctl_createv(clog, 0, NULL, NULL, 532 CTLFLAG_PERMANENT, 533 CTLTYPE_STRUCT, "consdev", 534 SYSCTL_DESCR("Console device"), 535 sysctl_consdev, 0, NULL, sizeof(dev_t), 536 CTL_KERN, KERN_CONSDEV, CTL_EOL); 537 #if NPTY > 0 538 sysctl_createv(clog, 0, NULL, NULL, 539 CTLFLAG_PERMANENT, 540 CTLTYPE_INT, "maxptys", 541 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 542 sysctl_kern_maxptys, 0, NULL, 0, 543 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 544 #endif /* NPTY > 0 */ 545 sysctl_createv(clog, 0, NULL, NULL, 546 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 547 CTLTYPE_INT, "maxphys", 548 SYSCTL_DESCR("Maximum raw I/O transfer size"), 549 NULL, MAXPHYS, NULL, 0, 550 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 551 sysctl_createv(clog, 0, NULL, NULL, 552 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 553 CTLTYPE_INT, "sbmax", 554 SYSCTL_DESCR("Maximum socket buffer size"), 555 sysctl_kern_sbmax, 0, NULL, 0, 556 CTL_KERN, KERN_SBMAX, CTL_EOL); 557 sysctl_createv(clog, 0, NULL, NULL, 558 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 559 CTLTYPE_INT, "monotonic_clock", 560 SYSCTL_DESCR("Implementation version of the POSIX " 561 "1003.1b Monotonic Clock Option"), 562 /* XXX _POSIX_VERSION */ 563 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 564 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 565 sysctl_createv(clog, 0, NULL, NULL, 566 CTLFLAG_PERMANENT, 567 CTLTYPE_INT, "urandom", 568 SYSCTL_DESCR("Random integer value"), 569 sysctl_kern_urnd, 0, NULL, 0, 570 CTL_KERN, KERN_URND, CTL_EOL); 571 sysctl_createv(clog, 0, NULL, NULL, 572 CTLFLAG_PERMANENT, 573 CTLTYPE_INT, "arandom", 574 SYSCTL_DESCR("n bytes of random data"), 575 sysctl_kern_arnd, 0, NULL, 0, 576 CTL_KERN, KERN_ARND, CTL_EOL); 577 sysctl_createv(clog, 0, NULL, NULL, 578 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 579 CTLTYPE_INT, "labelsector", 580 SYSCTL_DESCR("Sector number containing the disklabel"), 581 NULL, LABELSECTOR, NULL, 0, 582 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 583 sysctl_createv(clog, 0, NULL, NULL, 584 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 585 CTLTYPE_INT, "labeloffset", 586 SYSCTL_DESCR("Offset of the disklabel within the " 587 "sector"), 588 NULL, LABELOFFSET, NULL, 0, 589 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 590 sysctl_createv(clog, 0, NULL, NULL, 591 CTLFLAG_PERMANENT, 592 CTLTYPE_NODE, "lwp", 593 SYSCTL_DESCR("System-wide LWP information"), 594 sysctl_kern_lwp, 0, NULL, 0, 595 CTL_KERN, KERN_LWP, CTL_EOL); 596 sysctl_createv(clog, 0, NULL, NULL, 597 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 598 CTLTYPE_INT, "forkfsleep", 599 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 600 "to process limits"), 601 sysctl_kern_forkfsleep, 0, NULL, 0, 602 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 603 sysctl_createv(clog, 0, NULL, NULL, 604 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 605 CTLTYPE_INT, "posix_threads", 606 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 607 "Threads option to which the system " 608 "attempts to conform"), 609 /* XXX _POSIX_VERSION */ 610 NULL, _POSIX_THREADS, NULL, 0, 611 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 612 sysctl_createv(clog, 0, NULL, NULL, 613 CTLFLAG_PERMANENT, 614 CTLTYPE_INT, "posix_semaphores", 615 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 616 "Semaphores option to which the system " 617 "attempts to conform"), NULL, 618 0, &posix_semaphores, 619 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 620 sysctl_createv(clog, 0, NULL, NULL, 621 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 622 CTLTYPE_INT, "posix_barriers", 623 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 624 "Barriers option to which the system " 625 "attempts to conform"), 626 /* XXX _POSIX_VERSION */ 627 NULL, _POSIX_BARRIERS, NULL, 0, 628 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 629 sysctl_createv(clog, 0, NULL, NULL, 630 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 631 CTLTYPE_INT, "posix_timers", 632 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 633 "Timers option to which the system " 634 "attempts to conform"), 635 /* XXX _POSIX_VERSION */ 636 NULL, _POSIX_TIMERS, NULL, 0, 637 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 638 sysctl_createv(clog, 0, NULL, NULL, 639 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 640 CTLTYPE_INT, "posix_spin_locks", 641 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 642 "Locks option to which the system attempts " 643 "to conform"), 644 /* XXX _POSIX_VERSION */ 645 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 646 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 647 sysctl_createv(clog, 0, NULL, NULL, 648 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 649 CTLTYPE_INT, "posix_reader_writer_locks", 650 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 651 "Read-Write Locks option to which the " 652 "system attempts to conform"), 653 /* XXX _POSIX_VERSION */ 654 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 655 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 656 sysctl_createv(clog, 0, NULL, NULL, 657 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 658 CTLTYPE_INT, "dump_on_panic", 659 SYSCTL_DESCR("Perform a crash dump on system panic"), 660 NULL, 0, &dumponpanic, 0, 661 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 662 #ifdef DIAGNOSTIC 663 sysctl_createv(clog, 0, NULL, NULL, 664 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 665 CTLTYPE_INT, "panic_now", 666 SYSCTL_DESCR("Trigger a panic"), 667 sysctl_kern_trigger_panic, 0, NULL, 0, 668 CTL_KERN, CTL_CREATE, CTL_EOL); 669 #endif 670 sysctl_createv(clog, 0, NULL, NULL, 671 CTLFLAG_PERMANENT, 672 CTLTYPE_INT, "root_partition", 673 SYSCTL_DESCR("Root partition on the root device"), 674 sysctl_kern_root_partition, 0, NULL, 0, 675 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 676 sysctl_createv(clog, 0, NULL, NULL, 677 CTLFLAG_PERMANENT, 678 CTLTYPE_STRUCT, "drivers", 679 SYSCTL_DESCR("List of all drivers with block and " 680 "character device numbers"), 681 sysctl_kern_drivers, 0, NULL, 0, 682 CTL_KERN, KERN_DRIVERS, CTL_EOL); 683 sysctl_createv(clog, 0, NULL, NULL, 684 CTLFLAG_PERMANENT, 685 CTLTYPE_STRUCT, "cp_id", 686 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 687 sysctl_kern_cpid, 0, NULL, 0, 688 CTL_KERN, KERN_CP_ID, CTL_EOL); 689 sysctl_createv(clog, 0, NULL, &rnode, 690 CTLFLAG_PERMANENT, 691 CTLTYPE_NODE, "coredump", 692 SYSCTL_DESCR("Coredump settings."), 693 NULL, 0, NULL, 0, 694 CTL_KERN, CTL_CREATE, CTL_EOL); 695 sysctl_createv(clog, 0, &rnode, &rnode, 696 CTLFLAG_PERMANENT, 697 CTLTYPE_NODE, "setid", 698 SYSCTL_DESCR("Set-id processes' coredump settings."), 699 NULL, 0, NULL, 0, 700 CTL_CREATE, CTL_EOL); 701 sysctl_createv(clog, 0, &rnode, NULL, 702 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 703 CTLTYPE_INT, "dump", 704 SYSCTL_DESCR("Allow set-id processes to dump core."), 705 sysctl_security_setidcore, 0, &security_setidcore_dump, 706 sizeof(security_setidcore_dump), 707 CTL_CREATE, CTL_EOL); 708 sysctl_createv(clog, 0, &rnode, NULL, 709 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 710 CTLTYPE_STRING, "path", 711 SYSCTL_DESCR("Path pattern for set-id coredumps."), 712 sysctl_security_setidcorename, 0, 713 &security_setidcore_path, 714 sizeof(security_setidcore_path), 715 CTL_CREATE, CTL_EOL); 716 sysctl_createv(clog, 0, &rnode, NULL, 717 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 718 CTLTYPE_INT, "owner", 719 SYSCTL_DESCR("Owner id for set-id processes' cores."), 720 sysctl_security_setidcore, 0, &security_setidcore_owner, 721 0, 722 CTL_CREATE, CTL_EOL); 723 sysctl_createv(clog, 0, &rnode, NULL, 724 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 725 CTLTYPE_INT, "group", 726 SYSCTL_DESCR("Group id for set-id processes' cores."), 727 sysctl_security_setidcore, 0, &security_setidcore_group, 728 0, 729 CTL_CREATE, CTL_EOL); 730 sysctl_createv(clog, 0, &rnode, NULL, 731 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 732 CTLTYPE_INT, "mode", 733 SYSCTL_DESCR("Mode for set-id processes' cores."), 734 sysctl_security_setidcore, 0, &security_setidcore_mode, 735 0, 736 CTL_CREATE, CTL_EOL); 737 sysctl_createv(clog, 0, NULL, NULL, 738 #ifndef KERN_SA 739 CTLFLAG_IMMEDIATE| 740 #endif 741 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 742 CTLTYPE_INT, "no_sa_support", 743 SYSCTL_DESCR("0 if the kernel supports SA, otherwise " 744 "it doesn't"), 745 NULL, 746 #ifndef KERN_SA 747 1, NULL, 748 #else 749 0, &sa_system_disabled, 750 #endif 751 0, 752 CTL_KERN, CTL_CREATE, CTL_EOL); 753 /* kern.posix. */ 754 sysctl_createv(clog, 0, NULL, &rnode, 755 CTLFLAG_PERMANENT, 756 CTLTYPE_NODE, "posix", 757 SYSCTL_DESCR("POSIX options"), 758 NULL, 0, NULL, 0, 759 CTL_KERN, CTL_CREATE, CTL_EOL); 760 sysctl_createv(clog, 0, &rnode, NULL, 761 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 762 CTLTYPE_INT, "semmax", 763 SYSCTL_DESCR("Maximal number of semaphores"), 764 NULL, 0, &ksem_max, 0, 765 CTL_CREATE, CTL_EOL); 766 } 767 768 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 769 { 770 u_int u; 771 u_quad_t q; 772 773 sysctl_createv(clog, 0, NULL, NULL, 774 CTLFLAG_PERMANENT, 775 CTLTYPE_NODE, "hw", NULL, 776 NULL, 0, NULL, 0, 777 CTL_HW, CTL_EOL); 778 779 sysctl_createv(clog, 0, NULL, NULL, 780 CTLFLAG_PERMANENT, 781 CTLTYPE_STRING, "machine", 782 SYSCTL_DESCR("Machine class"), 783 NULL, 0, machine, 0, 784 CTL_HW, HW_MACHINE, CTL_EOL); 785 sysctl_createv(clog, 0, NULL, NULL, 786 CTLFLAG_PERMANENT, 787 CTLTYPE_STRING, "model", 788 SYSCTL_DESCR("Machine model"), 789 NULL, 0, cpu_model, 0, 790 CTL_HW, HW_MODEL, CTL_EOL); 791 sysctl_createv(clog, 0, NULL, NULL, 792 CTLFLAG_PERMANENT, 793 CTLTYPE_INT, "ncpu", 794 SYSCTL_DESCR("Number of CPUs configured"), 795 NULL, 0, &ncpu, 0, 796 CTL_HW, HW_NCPU, CTL_EOL); 797 sysctl_createv(clog, 0, NULL, NULL, 798 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 799 CTLTYPE_INT, "byteorder", 800 SYSCTL_DESCR("System byte order"), 801 NULL, BYTE_ORDER, NULL, 0, 802 CTL_HW, HW_BYTEORDER, CTL_EOL); 803 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 804 UINT_MAX : physmem * PAGE_SIZE; 805 sysctl_createv(clog, 0, NULL, NULL, 806 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 807 CTLTYPE_INT, "physmem", 808 SYSCTL_DESCR("Bytes of physical memory"), 809 NULL, u, NULL, 0, 810 CTL_HW, HW_PHYSMEM, CTL_EOL); 811 sysctl_createv(clog, 0, NULL, NULL, 812 CTLFLAG_PERMANENT, 813 CTLTYPE_INT, "usermem", 814 SYSCTL_DESCR("Bytes of non-kernel memory"), 815 sysctl_hw_usermem, 0, NULL, 0, 816 CTL_HW, HW_USERMEM, CTL_EOL); 817 sysctl_createv(clog, 0, NULL, NULL, 818 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 819 CTLTYPE_INT, "pagesize", 820 SYSCTL_DESCR("Software page size"), 821 NULL, PAGE_SIZE, NULL, 0, 822 CTL_HW, HW_PAGESIZE, CTL_EOL); 823 sysctl_createv(clog, 0, NULL, NULL, 824 CTLFLAG_PERMANENT, 825 CTLTYPE_STRING, "machine_arch", 826 SYSCTL_DESCR("Machine CPU class"), 827 NULL, 0, machine_arch, 0, 828 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 829 sysctl_createv(clog, 0, NULL, NULL, 830 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 831 CTLTYPE_INT, "alignbytes", 832 SYSCTL_DESCR("Alignment constraint for all possible " 833 "data types"), 834 NULL, ALIGNBYTES, NULL, 0, 835 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 836 sysctl_createv(clog, 0, NULL, NULL, 837 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 838 CTLTYPE_STRING, "cnmagic", 839 SYSCTL_DESCR("Console magic key sequence"), 840 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 841 CTL_HW, HW_CNMAGIC, CTL_EOL); 842 q = (u_quad_t)physmem * PAGE_SIZE; 843 sysctl_createv(clog, 0, NULL, NULL, 844 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 845 CTLTYPE_QUAD, "physmem64", 846 SYSCTL_DESCR("Bytes of physical memory"), 847 NULL, q, NULL, 0, 848 CTL_HW, HW_PHYSMEM64, CTL_EOL); 849 sysctl_createv(clog, 0, NULL, NULL, 850 CTLFLAG_PERMANENT, 851 CTLTYPE_QUAD, "usermem64", 852 SYSCTL_DESCR("Bytes of non-kernel memory"), 853 sysctl_hw_usermem, 0, NULL, 0, 854 CTL_HW, HW_USERMEM64, CTL_EOL); 855 sysctl_createv(clog, 0, NULL, NULL, 856 CTLFLAG_PERMANENT, 857 CTLTYPE_INT, "ncpuonline", 858 SYSCTL_DESCR("Number of CPUs online"), 859 NULL, 0, &ncpuonline, 0, 860 CTL_HW, HW_NCPUONLINE, CTL_EOL); 861 } 862 863 #ifdef DEBUG 864 /* 865 * Debugging related system variables. 866 */ 867 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 868 struct ctldebug debug5, debug6, debug7, debug8, debug9; 869 struct ctldebug debug10, debug11, debug12, debug13, debug14; 870 struct ctldebug debug15, debug16, debug17, debug18, debug19; 871 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 872 &debug0, &debug1, &debug2, &debug3, &debug4, 873 &debug5, &debug6, &debug7, &debug8, &debug9, 874 &debug10, &debug11, &debug12, &debug13, &debug14, 875 &debug15, &debug16, &debug17, &debug18, &debug19, 876 }; 877 878 /* 879 * this setup routine is a replacement for debug_sysctl() 880 * 881 * note that it creates several nodes per defined debug variable 882 */ 883 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 884 { 885 struct ctldebug *cdp; 886 char nodename[20]; 887 int i; 888 889 /* 890 * two ways here: 891 * 892 * the "old" way (debug.name -> value) which was emulated by 893 * the sysctl(8) binary 894 * 895 * the new way, which the sysctl(8) binary was actually using 896 897 node debug 898 node debug.0 899 string debug.0.name 900 int debug.0.value 901 int debug.name 902 903 */ 904 905 sysctl_createv(clog, 0, NULL, NULL, 906 CTLFLAG_PERMANENT, 907 CTLTYPE_NODE, "debug", NULL, 908 NULL, 0, NULL, 0, 909 CTL_DEBUG, CTL_EOL); 910 911 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 912 cdp = debugvars[i]; 913 if (cdp->debugname == NULL || cdp->debugvar == NULL) 914 continue; 915 916 snprintf(nodename, sizeof(nodename), "debug%d", i); 917 sysctl_createv(clog, 0, NULL, NULL, 918 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 919 CTLTYPE_NODE, nodename, NULL, 920 NULL, 0, NULL, 0, 921 CTL_DEBUG, i, CTL_EOL); 922 sysctl_createv(clog, 0, NULL, NULL, 923 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 924 CTLTYPE_STRING, "name", NULL, 925 /*XXXUNCONST*/ 926 NULL, 0, __UNCONST(cdp->debugname), 0, 927 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 928 sysctl_createv(clog, 0, NULL, NULL, 929 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 930 CTLTYPE_INT, "value", NULL, 931 NULL, 0, cdp->debugvar, 0, 932 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 933 sysctl_createv(clog, 0, NULL, NULL, 934 CTLFLAG_PERMANENT, 935 CTLTYPE_INT, cdp->debugname, NULL, 936 NULL, 0, cdp->debugvar, 0, 937 CTL_DEBUG, CTL_CREATE, CTL_EOL); 938 } 939 } 940 #endif /* DEBUG */ 941 942 /* 943 * ******************************************************************** 944 * section 2: private node-specific helper routines. 945 * ******************************************************************** 946 */ 947 948 #ifdef DIAGNOSTIC 949 static int 950 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 951 { 952 int newtrig, error; 953 struct sysctlnode node; 954 955 newtrig = 0; 956 node = *rnode; 957 node.sysctl_data = &newtrig; 958 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 959 if (error || newp == NULL) 960 return (error); 961 962 if (newtrig != 0) 963 panic("Panic triggered"); 964 965 return (error); 966 } 967 #endif 968 969 /* 970 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 971 * new value is lower than desiredvnodes and then calls reinit 972 * routines that needs to adjust to the new value. 973 */ 974 static int 975 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 976 { 977 int error, new_vnodes, old_vnodes, new_max; 978 struct sysctlnode node; 979 980 new_vnodes = desiredvnodes; 981 node = *rnode; 982 node.sysctl_data = &new_vnodes; 983 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 984 if (error || newp == NULL) 985 return (error); 986 987 /* Limits: 75% of KVA and physical memory. */ 988 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 989 if (new_vnodes > new_max) 990 new_vnodes = new_max; 991 992 old_vnodes = desiredvnodes; 993 desiredvnodes = new_vnodes; 994 if (new_vnodes < old_vnodes) { 995 error = vfs_drainvnodes(new_vnodes); 996 if (error) { 997 desiredvnodes = old_vnodes; 998 return (error); 999 } 1000 } 1001 vfs_reinit(); 1002 nchreinit(); 1003 1004 return (0); 1005 } 1006 1007 /* 1008 * sysctl helper routine for rtc_offset - set time after changes 1009 */ 1010 static int 1011 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1012 { 1013 struct timespec ts, delta; 1014 int error, new_rtc_offset; 1015 struct sysctlnode node; 1016 1017 new_rtc_offset = rtc_offset; 1018 node = *rnode; 1019 node.sysctl_data = &new_rtc_offset; 1020 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1021 if (error || newp == NULL) 1022 return (error); 1023 1024 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1025 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1026 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1027 return (EPERM); 1028 if (rtc_offset == new_rtc_offset) 1029 return (0); 1030 1031 /* if we change the offset, adjust the time */ 1032 nanotime(&ts); 1033 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1034 delta.tv_nsec = 0; 1035 timespecadd(&ts, &delta, &ts); 1036 rtc_offset = new_rtc_offset; 1037 return (settime(l->l_proc, &ts)); 1038 } 1039 1040 /* 1041 * sysctl helper routine for kern.maxproc. Ensures that the new 1042 * values are not too low or too high. 1043 */ 1044 static int 1045 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1046 { 1047 int error, nmaxproc; 1048 struct sysctlnode node; 1049 1050 nmaxproc = maxproc; 1051 node = *rnode; 1052 node.sysctl_data = &nmaxproc; 1053 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1054 if (error || newp == NULL) 1055 return (error); 1056 1057 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1058 return (EINVAL); 1059 #ifdef __HAVE_CPU_MAXPROC 1060 if (nmaxproc > cpu_maxproc()) 1061 return (EINVAL); 1062 #endif 1063 maxproc = nmaxproc; 1064 1065 return (0); 1066 } 1067 1068 /* 1069 * sysctl helper function for kern.hostid. The hostid is a long, but 1070 * we export it as an int, so we need to give it a little help. 1071 */ 1072 static int 1073 sysctl_kern_hostid(SYSCTLFN_ARGS) 1074 { 1075 int error, inthostid; 1076 struct sysctlnode node; 1077 1078 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1079 node = *rnode; 1080 node.sysctl_data = &inthostid; 1081 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1082 if (error || newp == NULL) 1083 return (error); 1084 1085 hostid = (unsigned)inthostid; 1086 1087 return (0); 1088 } 1089 1090 /* 1091 * sysctl helper function for kern.hostname and kern.domainnname. 1092 * resets the relevant recorded length when the underlying name is 1093 * changed. 1094 */ 1095 static int 1096 sysctl_setlen(SYSCTLFN_ARGS) 1097 { 1098 int error; 1099 1100 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1101 if (error || newp == NULL) 1102 return (error); 1103 1104 switch (rnode->sysctl_num) { 1105 case KERN_HOSTNAME: 1106 hostnamelen = strlen((const char*)rnode->sysctl_data); 1107 break; 1108 case KERN_DOMAINNAME: 1109 domainnamelen = strlen((const char*)rnode->sysctl_data); 1110 break; 1111 } 1112 1113 return (0); 1114 } 1115 1116 /* 1117 * sysctl helper routine for kern.clockrate. Assembles a struct on 1118 * the fly to be returned to the caller. 1119 */ 1120 static int 1121 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1122 { 1123 struct clockinfo clkinfo; 1124 struct sysctlnode node; 1125 1126 clkinfo.tick = tick; 1127 clkinfo.tickadj = tickadj; 1128 clkinfo.hz = hz; 1129 clkinfo.profhz = profhz; 1130 clkinfo.stathz = stathz ? stathz : hz; 1131 1132 node = *rnode; 1133 node.sysctl_data = &clkinfo; 1134 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1135 } 1136 1137 /* 1138 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1139 * former it merely checks the message buffer is set up. For the latter, 1140 * it also copies out the data if necessary. 1141 */ 1142 static int 1143 sysctl_msgbuf(SYSCTLFN_ARGS) 1144 { 1145 char *where = oldp; 1146 size_t len, maxlen; 1147 long beg, end; 1148 extern kmutex_t log_lock; 1149 int error; 1150 1151 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1152 msgbufenabled = 0; 1153 return (ENXIO); 1154 } 1155 1156 switch (rnode->sysctl_num) { 1157 case KERN_MSGBUFSIZE: { 1158 struct sysctlnode node = *rnode; 1159 int msg_bufs = (int)msgbufp->msg_bufs; 1160 node.sysctl_data = &msg_bufs; 1161 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1162 } 1163 case KERN_MSGBUF: 1164 break; 1165 default: 1166 return (EOPNOTSUPP); 1167 } 1168 1169 if (newp != NULL) 1170 return (EPERM); 1171 1172 if (oldp == NULL) { 1173 /* always return full buffer size */ 1174 *oldlenp = msgbufp->msg_bufs; 1175 return (0); 1176 } 1177 1178 sysctl_unlock(); 1179 1180 /* 1181 * First, copy from the write pointer to the end of 1182 * message buffer. 1183 */ 1184 error = 0; 1185 mutex_spin_enter(&log_lock); 1186 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1187 beg = msgbufp->msg_bufx; 1188 end = msgbufp->msg_bufs; 1189 mutex_spin_exit(&log_lock); 1190 1191 while (maxlen > 0) { 1192 len = MIN(end - beg, maxlen); 1193 if (len == 0) 1194 break; 1195 /* XXX unlocked, but hardly matters. */ 1196 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1197 if (error) 1198 break; 1199 where += len; 1200 maxlen -= len; 1201 1202 /* 1203 * ... then, copy from the beginning of message buffer to 1204 * the write pointer. 1205 */ 1206 beg = 0; 1207 end = msgbufp->msg_bufx; 1208 } 1209 1210 sysctl_relock(); 1211 return (error); 1212 } 1213 1214 /* 1215 * sysctl helper routine for kern.defcorename. In the case of a new 1216 * string being assigned, check that it's not a zero-length string. 1217 * (XXX the check in -current doesn't work, but do we really care?) 1218 */ 1219 static int 1220 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1221 { 1222 int error; 1223 char *newcorename; 1224 struct sysctlnode node; 1225 1226 newcorename = PNBUF_GET(); 1227 node = *rnode; 1228 node.sysctl_data = &newcorename[0]; 1229 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1230 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1231 if (error || newp == NULL) { 1232 goto done; 1233 } 1234 1235 /* 1236 * when sysctl_lookup() deals with a string, it's guaranteed 1237 * to come back nul terminated. So there. :) 1238 */ 1239 if (strlen(newcorename) == 0) { 1240 error = EINVAL; 1241 } else { 1242 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1243 error = 0; 1244 } 1245 done: 1246 PNBUF_PUT(newcorename); 1247 return error; 1248 } 1249 1250 /* 1251 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1252 * across all cpus. 1253 */ 1254 static int 1255 sysctl_kern_cptime(SYSCTLFN_ARGS) 1256 { 1257 struct sysctlnode node = *rnode; 1258 uint64_t *cp_time = NULL; 1259 int error, n = ncpu, i; 1260 struct cpu_info *ci; 1261 CPU_INFO_ITERATOR cii; 1262 1263 /* 1264 * if you specifically pass a buffer that is the size of the 1265 * sum, or if you are probing for the size, you get the "sum" 1266 * of cp_time (and the size thereof) across all processors. 1267 * 1268 * alternately, you can pass an additional mib number and get 1269 * cp_time for that particular processor. 1270 */ 1271 switch (namelen) { 1272 case 0: 1273 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1274 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1275 n = -1; /* SUM */ 1276 } 1277 else { 1278 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1279 n = -2; /* ALL */ 1280 } 1281 break; 1282 case 1: 1283 if (name[0] < 0 || name[0] >= n) 1284 return (ENOENT); /* ENOSUCHPROCESSOR */ 1285 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1286 n = name[0]; 1287 /* 1288 * adjust these so that sysctl_lookup() will be happy 1289 */ 1290 name++; 1291 namelen--; 1292 break; 1293 default: 1294 return (EINVAL); 1295 } 1296 1297 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1298 if (cp_time == NULL) 1299 return (ENOMEM); 1300 node.sysctl_data = cp_time; 1301 memset(cp_time, 0, node.sysctl_size); 1302 1303 for (CPU_INFO_FOREACH(cii, ci)) { 1304 if (n <= 0) { 1305 for (i = 0; i < CPUSTATES; i++) { 1306 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1307 } 1308 } 1309 /* 1310 * if a specific processor was requested and we just 1311 * did it, we're done here 1312 */ 1313 if (n == 0) 1314 break; 1315 /* 1316 * if doing "all", skip to next cp_time set for next processor 1317 */ 1318 if (n == -2) 1319 cp_time += CPUSTATES; 1320 /* 1321 * if we're doing a specific processor, we're one 1322 * processor closer 1323 */ 1324 if (n > 0) 1325 n--; 1326 } 1327 1328 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1329 kmem_free(node.sysctl_data, node.sysctl_size); 1330 return (error); 1331 } 1332 1333 #if NPTY > 0 1334 /* 1335 * sysctl helper routine for kern.maxptys. Ensures that any new value 1336 * is acceptable to the pty subsystem. 1337 */ 1338 static int 1339 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1340 { 1341 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1342 int error, xmax; 1343 struct sysctlnode node; 1344 1345 /* get current value of maxptys */ 1346 xmax = pty_maxptys(0, 0); 1347 1348 node = *rnode; 1349 node.sysctl_data = &xmax; 1350 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1351 if (error || newp == NULL) 1352 return (error); 1353 1354 if (xmax != pty_maxptys(xmax, 1)) 1355 return (EINVAL); 1356 1357 return (0); 1358 } 1359 #endif /* NPTY > 0 */ 1360 1361 /* 1362 * sysctl helper routine for kern.sbmax. Basically just ensures that 1363 * any new value is not too small. 1364 */ 1365 static int 1366 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1367 { 1368 int error, new_sbmax; 1369 struct sysctlnode node; 1370 1371 new_sbmax = sb_max; 1372 node = *rnode; 1373 node.sysctl_data = &new_sbmax; 1374 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1375 if (error || newp == NULL) 1376 return (error); 1377 1378 KERNEL_LOCK(1, NULL); 1379 error = sb_max_set(new_sbmax); 1380 KERNEL_UNLOCK_ONE(NULL); 1381 1382 return (error); 1383 } 1384 1385 /* 1386 * sysctl helper routine for kern.urandom node. Picks a random number 1387 * for you. 1388 */ 1389 static int 1390 sysctl_kern_urnd(SYSCTLFN_ARGS) 1391 { 1392 #if NRND > 0 1393 int v, rv; 1394 1395 KERNEL_LOCK(1, NULL); 1396 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1397 KERNEL_UNLOCK_ONE(NULL); 1398 if (rv == sizeof(v)) { 1399 struct sysctlnode node = *rnode; 1400 node.sysctl_data = &v; 1401 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1402 } 1403 else 1404 return (EIO); /*XXX*/ 1405 #else 1406 return (EOPNOTSUPP); 1407 #endif 1408 } 1409 1410 /* 1411 * sysctl helper routine for kern.arandom node. Picks a random number 1412 * for you. 1413 */ 1414 static int 1415 sysctl_kern_arnd(SYSCTLFN_ARGS) 1416 { 1417 #if NRND > 0 1418 int error; 1419 void *v; 1420 struct sysctlnode node = *rnode; 1421 1422 if (*oldlenp == 0) 1423 return 0; 1424 if (*oldlenp > 8192) 1425 return E2BIG; 1426 1427 v = kmem_alloc(*oldlenp, KM_SLEEP); 1428 arc4randbytes(v, *oldlenp); 1429 node.sysctl_data = v; 1430 node.sysctl_size = *oldlenp; 1431 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1432 kmem_free(v, *oldlenp); 1433 return error; 1434 #else 1435 return (EOPNOTSUPP); 1436 #endif 1437 } 1438 /* 1439 * sysctl helper routine to do kern.lwp.* work. 1440 */ 1441 static int 1442 sysctl_kern_lwp(SYSCTLFN_ARGS) 1443 { 1444 struct kinfo_lwp klwp; 1445 struct proc *p; 1446 struct lwp *l2, *l3; 1447 char *where, *dp; 1448 int pid, elem_size, elem_count; 1449 int buflen, needed, error; 1450 bool gotit; 1451 1452 if (namelen == 1 && name[0] == CTL_QUERY) 1453 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1454 1455 dp = where = oldp; 1456 buflen = where != NULL ? *oldlenp : 0; 1457 error = needed = 0; 1458 1459 if (newp != NULL || namelen != 3) 1460 return (EINVAL); 1461 pid = name[0]; 1462 elem_size = name[1]; 1463 elem_count = name[2]; 1464 1465 sysctl_unlock(); 1466 if (pid == -1) { 1467 mutex_enter(proc_lock); 1468 PROCLIST_FOREACH(p, &allproc) { 1469 /* Grab a hold on the process. */ 1470 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1471 continue; 1472 } 1473 mutex_exit(proc_lock); 1474 1475 mutex_enter(p->p_lock); 1476 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1477 if (buflen >= elem_size && elem_count > 0) { 1478 lwp_lock(l2); 1479 fill_lwp(l2, &klwp); 1480 lwp_unlock(l2); 1481 mutex_exit(p->p_lock); 1482 1483 /* 1484 * Copy out elem_size, but not 1485 * larger than the size of a 1486 * struct kinfo_proc2. 1487 */ 1488 error = dcopyout(l, &klwp, dp, 1489 min(sizeof(klwp), elem_size)); 1490 if (error) { 1491 rw_exit(&p->p_reflock); 1492 goto cleanup; 1493 } 1494 mutex_enter(p->p_lock); 1495 LIST_FOREACH(l3, &p->p_lwps, 1496 l_sibling) { 1497 if (l2 == l3) 1498 break; 1499 } 1500 if (l3 == NULL) { 1501 mutex_exit(p->p_lock); 1502 rw_exit(&p->p_reflock); 1503 error = EAGAIN; 1504 goto cleanup; 1505 } 1506 dp += elem_size; 1507 buflen -= elem_size; 1508 elem_count--; 1509 } 1510 needed += elem_size; 1511 } 1512 mutex_exit(p->p_lock); 1513 1514 /* Drop reference to process. */ 1515 mutex_enter(proc_lock); 1516 rw_exit(&p->p_reflock); 1517 } 1518 mutex_exit(proc_lock); 1519 } else { 1520 mutex_enter(proc_lock); 1521 p = proc_find(pid); 1522 if (p == NULL) { 1523 error = ESRCH; 1524 mutex_exit(proc_lock); 1525 goto cleanup; 1526 } 1527 /* Grab a hold on the process. */ 1528 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1529 mutex_exit(proc_lock); 1530 if (!gotit) { 1531 error = ESRCH; 1532 goto cleanup; 1533 } 1534 1535 mutex_enter(p->p_lock); 1536 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1537 if (buflen >= elem_size && elem_count > 0) { 1538 lwp_lock(l2); 1539 fill_lwp(l2, &klwp); 1540 lwp_unlock(l2); 1541 mutex_exit(p->p_lock); 1542 /* 1543 * Copy out elem_size, but not larger than 1544 * the size of a struct kinfo_proc2. 1545 */ 1546 error = dcopyout(l, &klwp, dp, 1547 min(sizeof(klwp), elem_size)); 1548 if (error) { 1549 rw_exit(&p->p_reflock); 1550 goto cleanup; 1551 } 1552 mutex_enter(p->p_lock); 1553 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1554 if (l2 == l3) 1555 break; 1556 } 1557 if (l3 == NULL) { 1558 mutex_exit(p->p_lock); 1559 rw_exit(&p->p_reflock); 1560 error = EAGAIN; 1561 goto cleanup; 1562 } 1563 dp += elem_size; 1564 buflen -= elem_size; 1565 elem_count--; 1566 } 1567 needed += elem_size; 1568 } 1569 mutex_exit(p->p_lock); 1570 1571 /* Drop reference to process. */ 1572 rw_exit(&p->p_reflock); 1573 } 1574 1575 if (where != NULL) { 1576 *oldlenp = dp - where; 1577 if (needed > *oldlenp) { 1578 sysctl_relock(); 1579 return (ENOMEM); 1580 } 1581 } else { 1582 needed += KERN_LWPSLOP; 1583 *oldlenp = needed; 1584 } 1585 error = 0; 1586 cleanup: 1587 sysctl_relock(); 1588 return (error); 1589 } 1590 1591 /* 1592 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1593 * given value is not too large or two small, and is at least one 1594 * timer tick if not zero. 1595 */ 1596 static int 1597 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1598 { 1599 /* userland sees value in ms, internally is in ticks */ 1600 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1601 int error, timo, lsleep; 1602 struct sysctlnode node; 1603 1604 lsleep = forkfsleep * 1000 / hz; 1605 node = *rnode; 1606 node.sysctl_data = &lsleep; 1607 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1608 if (error || newp == NULL) 1609 return (error); 1610 1611 /* refuse negative values, and overly 'long time' */ 1612 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1613 return (EINVAL); 1614 1615 timo = mstohz(lsleep); 1616 1617 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1618 if (lsleep != 0 && timo == 0) 1619 forkfsleep = 1; 1620 else 1621 forkfsleep = timo; 1622 1623 return (0); 1624 } 1625 1626 /* 1627 * sysctl helper routine for kern.root_partition 1628 */ 1629 static int 1630 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1631 { 1632 int rootpart = DISKPART(rootdev); 1633 struct sysctlnode node = *rnode; 1634 1635 node.sysctl_data = &rootpart; 1636 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1637 } 1638 1639 /* 1640 * sysctl helper function for kern.drivers 1641 */ 1642 static int 1643 sysctl_kern_drivers(SYSCTLFN_ARGS) 1644 { 1645 int error; 1646 size_t buflen; 1647 struct kinfo_drivers kd; 1648 char *start, *where; 1649 const char *dname; 1650 int i; 1651 extern struct devsw_conv *devsw_conv; 1652 extern int max_devsw_convs; 1653 1654 if (newp != NULL || namelen != 0) 1655 return (EINVAL); 1656 1657 start = where = oldp; 1658 buflen = *oldlenp; 1659 if (where == NULL) { 1660 *oldlenp = max_devsw_convs * sizeof kd; 1661 return 0; 1662 } 1663 1664 /* 1665 * An array of kinfo_drivers structures 1666 */ 1667 error = 0; 1668 sysctl_unlock(); 1669 mutex_enter(&device_lock); 1670 for (i = 0; i < max_devsw_convs; i++) { 1671 dname = devsw_conv[i].d_name; 1672 if (dname == NULL) 1673 continue; 1674 if (buflen < sizeof kd) { 1675 error = ENOMEM; 1676 break; 1677 } 1678 memset(&kd, 0, sizeof(kd)); 1679 kd.d_bmajor = devsw_conv[i].d_bmajor; 1680 kd.d_cmajor = devsw_conv[i].d_cmajor; 1681 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1682 mutex_exit(&device_lock); 1683 error = dcopyout(l, &kd, where, sizeof kd); 1684 mutex_enter(&device_lock); 1685 if (error != 0) 1686 break; 1687 buflen -= sizeof kd; 1688 where += sizeof kd; 1689 } 1690 mutex_exit(&device_lock); 1691 sysctl_relock(); 1692 *oldlenp = where - start; 1693 return error; 1694 } 1695 1696 static int 1697 sysctl_security_setidcore(SYSCTLFN_ARGS) 1698 { 1699 int newsize, error; 1700 struct sysctlnode node; 1701 1702 node = *rnode; 1703 node.sysctl_data = &newsize; 1704 newsize = *(int *)rnode->sysctl_data; 1705 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1706 if (error || newp == NULL) 1707 return error; 1708 1709 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 1710 0, NULL, NULL, NULL)) 1711 return (EPERM); 1712 1713 *(int *)rnode->sysctl_data = newsize; 1714 1715 return 0; 1716 } 1717 1718 static int 1719 sysctl_security_setidcorename(SYSCTLFN_ARGS) 1720 { 1721 int error; 1722 char *newsetidcorename; 1723 struct sysctlnode node; 1724 1725 newsetidcorename = PNBUF_GET(); 1726 node = *rnode; 1727 node.sysctl_data = newsetidcorename; 1728 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1729 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1730 if (error || newp == NULL) { 1731 goto out; 1732 } 1733 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 1734 0, NULL, NULL, NULL)) { 1735 error = EPERM; 1736 goto out; 1737 } 1738 if (strlen(newsetidcorename) == 0) { 1739 error = EINVAL; 1740 goto out; 1741 } 1742 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1743 out: 1744 PNBUF_PUT(newsetidcorename); 1745 return error; 1746 } 1747 1748 /* 1749 * sysctl helper routine for kern.cp_id node. Maps cpus to their 1750 * cpuids. 1751 */ 1752 static int 1753 sysctl_kern_cpid(SYSCTLFN_ARGS) 1754 { 1755 struct sysctlnode node = *rnode; 1756 uint64_t *cp_id = NULL; 1757 int error, n = ncpu; 1758 struct cpu_info *ci; 1759 CPU_INFO_ITERATOR cii; 1760 1761 /* 1762 * Here you may either retrieve a single cpu id or the whole 1763 * set. The size you get back when probing depends on what 1764 * you ask for. 1765 */ 1766 switch (namelen) { 1767 case 0: 1768 node.sysctl_size = n * sizeof(uint64_t); 1769 n = -2; /* ALL */ 1770 break; 1771 case 1: 1772 if (name[0] < 0 || name[0] >= n) 1773 return (ENOENT); /* ENOSUCHPROCESSOR */ 1774 node.sysctl_size = sizeof(uint64_t); 1775 n = name[0]; 1776 /* 1777 * adjust these so that sysctl_lookup() will be happy 1778 */ 1779 name++; 1780 namelen--; 1781 break; 1782 default: 1783 return (EINVAL); 1784 } 1785 1786 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 1787 if (cp_id == NULL) 1788 return (ENOMEM); 1789 node.sysctl_data = cp_id; 1790 memset(cp_id, 0, node.sysctl_size); 1791 1792 for (CPU_INFO_FOREACH(cii, ci)) { 1793 if (n <= 0) 1794 cp_id[0] = cpu_index(ci); 1795 /* 1796 * if a specific processor was requested and we just 1797 * did it, we're done here 1798 */ 1799 if (n == 0) 1800 break; 1801 /* 1802 * if doing "all", skip to next cp_id slot for next processor 1803 */ 1804 if (n == -2) 1805 cp_id++; 1806 /* 1807 * if we're doing a specific processor, we're one 1808 * processor closer 1809 */ 1810 if (n > 0) 1811 n--; 1812 } 1813 1814 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1815 kmem_free(node.sysctl_data, node.sysctl_size); 1816 return (error); 1817 } 1818 1819 /* 1820 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 1821 * calculate on the fly taking into account integer overflow and the 1822 * current wired count. 1823 */ 1824 static int 1825 sysctl_hw_usermem(SYSCTLFN_ARGS) 1826 { 1827 u_int ui; 1828 u_quad_t uq; 1829 struct sysctlnode node; 1830 1831 node = *rnode; 1832 switch (rnode->sysctl_num) { 1833 case HW_USERMEM: 1834 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1835 ui = UINT_MAX; 1836 else 1837 ui *= PAGE_SIZE; 1838 node.sysctl_data = &ui; 1839 break; 1840 case HW_USERMEM64: 1841 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1842 node.sysctl_data = &uq; 1843 break; 1844 default: 1845 return (EINVAL); 1846 } 1847 1848 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1849 } 1850 1851 /* 1852 * sysctl helper routine for kern.cnmagic node. Pulls the old value 1853 * out, encoded, and stuffs the new value in for decoding. 1854 */ 1855 static int 1856 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 1857 { 1858 char magic[CNS_LEN]; 1859 int error; 1860 struct sysctlnode node; 1861 1862 if (oldp) 1863 cn_get_magic(magic, CNS_LEN); 1864 node = *rnode; 1865 node.sysctl_data = &magic[0]; 1866 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1867 if (error || newp == NULL) 1868 return (error); 1869 1870 return (cn_set_magic(magic)); 1871 } 1872 1873 /* 1874 * ******************************************************************** 1875 * section 3: public helper routines that are used for more than one 1876 * node 1877 * ******************************************************************** 1878 */ 1879 1880 /* 1881 * sysctl helper routine for the kern.root_device node and some ports' 1882 * machdep.root_device nodes. 1883 */ 1884 int 1885 sysctl_root_device(SYSCTLFN_ARGS) 1886 { 1887 struct sysctlnode node; 1888 1889 node = *rnode; 1890 node.sysctl_data = root_device->dv_xname; 1891 node.sysctl_size = strlen(device_xname(root_device)) + 1; 1892 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1893 } 1894 1895 /* 1896 * sysctl helper routine for kern.consdev, dependent on the current 1897 * state of the console. Also used for machdep.console_device on some 1898 * ports. 1899 */ 1900 int 1901 sysctl_consdev(SYSCTLFN_ARGS) 1902 { 1903 dev_t consdev; 1904 uint32_t oconsdev; 1905 struct sysctlnode node; 1906 1907 if (cn_tab != NULL) 1908 consdev = cn_tab->cn_dev; 1909 else 1910 consdev = NODEV; 1911 node = *rnode; 1912 switch (*oldlenp) { 1913 case sizeof(consdev): 1914 node.sysctl_data = &consdev; 1915 node.sysctl_size = sizeof(consdev); 1916 break; 1917 case sizeof(oconsdev): 1918 oconsdev = (uint32_t)consdev; 1919 node.sysctl_data = &oconsdev; 1920 node.sysctl_size = sizeof(oconsdev); 1921 break; 1922 default: 1923 return EINVAL; 1924 } 1925 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1926 } 1927 1928 /* 1929 * ******************************************************************** 1930 * section 4: support for some helpers 1931 * ******************************************************************** 1932 */ 1933 1934 1935 /* 1936 * Fill in a kinfo_lwp structure for the specified lwp. 1937 */ 1938 static void 1939 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 1940 { 1941 struct proc *p = l->l_proc; 1942 struct timeval tv; 1943 1944 KASSERT(lwp_locked(l, NULL)); 1945 1946 memset(kl, 0, sizeof(*kl)); 1947 1948 kl->l_forw = 0; 1949 kl->l_back = 0; 1950 kl->l_laddr = PTRTOUINT64(l); 1951 kl->l_addr = PTRTOUINT64(l->l_addr); 1952 kl->l_stat = l->l_stat; 1953 kl->l_lid = l->l_lid; 1954 kl->l_flag = L_INMEM; 1955 kl->l_flag |= sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 1956 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 1957 1958 kl->l_swtime = l->l_swtime; 1959 kl->l_slptime = l->l_slptime; 1960 if (l->l_stat == LSONPROC) 1961 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 1962 else 1963 kl->l_schedflags = 0; 1964 kl->l_priority = lwp_eprio(l); 1965 kl->l_usrpri = l->l_priority; 1966 if (l->l_wchan) 1967 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 1968 kl->l_wchan = PTRTOUINT64(l->l_wchan); 1969 kl->l_cpuid = cpu_index(l->l_cpu); 1970 bintime2timeval(&l->l_rtime, &tv); 1971 kl->l_rtime_sec = tv.tv_sec; 1972 kl->l_rtime_usec = tv.tv_usec; 1973 kl->l_cpticks = l->l_cpticks; 1974 kl->l_pctcpu = l->l_pctcpu; 1975 kl->l_pid = p->p_pid; 1976 if (l->l_name == NULL) 1977 kl->l_name[0] = '\0'; 1978 else 1979 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 1980 } 1981
Indexes created Thu Sep 25 02:09:54 GMT 2025