init_sysctl.c revision 1.184
1 /* $NetBSD: init_sysctl.c,v 1.184 2011/11/19 22:51:25 tls 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 1.184 2011/11/19 22:51:25 tls Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_compat_netbsd.h" 37 #include "opt_modular.h" 38 #include "opt_sa.h" 39 #include "opt_posix.h" 40 #include "pty.h" 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/sysctl.h> 45 #include <sys/cpu.h> 46 #include <sys/errno.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/unistd.h> 50 #include <sys/disklabel.h> 51 #include <sys/cprng.h> 52 #include <sys/vnode.h> 53 #include <sys/mount.h> 54 #include <sys/namei.h> 55 #include <sys/msgbuf.h> 56 #include <dev/cons.h> 57 #include <sys/socketvar.h> 58 #include <sys/file.h> 59 #include <sys/filedesc.h> 60 #include <sys/tty.h> 61 #include <sys/kmem.h> 62 #include <sys/resource.h> 63 #include <sys/resourcevar.h> 64 #include <sys/exec.h> 65 #include <sys/conf.h> 66 #include <sys/device.h> 67 #include <sys/stat.h> 68 #include <sys/kauth.h> 69 #include <sys/ktrace.h> 70 #include <sys/ksem.h> 71 72 #ifdef COMPAT_50 73 #include <compat/sys/time.h> 74 #endif 75 76 #ifdef KERN_SA 77 #include <sys/sa.h> 78 #endif 79 80 #include <sys/cpu.h> 81 82 #if defined(MODULAR) || defined(P1003_1B_SEMAPHORE) 83 int posix_semaphores = 200112; 84 #else 85 int posix_semaphores; 86 #endif 87 88 int security_setidcore_dump; 89 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 90 uid_t security_setidcore_owner = 0; 91 gid_t security_setidcore_group = 0; 92 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 93 94 static const u_int sysctl_flagmap[] = { 95 PK_ADVLOCK, P_ADVLOCK, 96 PK_EXEC, P_EXEC, 97 PK_NOCLDWAIT, P_NOCLDWAIT, 98 PK_32, P_32, 99 PK_CLDSIGIGN, P_CLDSIGIGN, 100 PK_SUGID, P_SUGID, 101 0 102 }; 103 104 static const u_int sysctl_sflagmap[] = { 105 PS_NOCLDSTOP, P_NOCLDSTOP, 106 PS_WEXIT, P_WEXIT, 107 PS_STOPFORK, P_STOPFORK, 108 PS_STOPEXEC, P_STOPEXEC, 109 PS_STOPEXIT, P_STOPEXIT, 110 0 111 }; 112 113 static const u_int sysctl_slflagmap[] = { 114 PSL_TRACED, P_TRACED, 115 PSL_FSTRACE, P_FSTRACE, 116 PSL_CHTRACED, P_CHTRACED, 117 PSL_SYSCALL, P_SYSCALL, 118 0 119 }; 120 121 static const u_int sysctl_lflagmap[] = { 122 PL_CONTROLT, P_CONTROLT, 123 PL_PPWAIT, P_PPWAIT, 124 0 125 }; 126 127 static const u_int sysctl_stflagmap[] = { 128 PST_PROFIL, P_PROFIL, 129 0 130 131 }; 132 133 static const u_int sysctl_lwpprflagmap[] = { 134 LPR_DETACHED, L_DETACHED, 135 0 136 }; 137 138 /* 139 * try over estimating by 5 procs/lwps 140 */ 141 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 142 143 static int dcopyout(struct lwp *, const void *, void *, size_t); 144 145 static int 146 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 147 { 148 int error; 149 150 error = copyout(kaddr, uaddr, len); 151 ktrmibio(-1, UIO_READ, uaddr, len, error); 152 153 return error; 154 } 155 156 #ifdef DIAGNOSTIC 157 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 158 #endif 159 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 160 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 161 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 162 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 163 static int sysctl_setlen(SYSCTLFN_PROTO); 164 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 165 static int sysctl_msgbuf(SYSCTLFN_PROTO); 166 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 167 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 168 #if NPTY > 0 169 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 170 #endif /* NPTY > 0 */ 171 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 172 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 173 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 174 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 175 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 176 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 177 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 178 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 179 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 180 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 181 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 182 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 183 184 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 185 186 /* 187 * ******************************************************************** 188 * section 1: setup routines 189 * ******************************************************************** 190 * These functions are stuffed into a link set for sysctl setup 191 * functions. They're never called or referenced from anywhere else. 192 * ******************************************************************** 193 */ 194 195 /* 196 * this setup routine is a replacement for kern_sysctl() 197 */ 198 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 199 { 200 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 201 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 202 extern int dumponpanic; /* defined in kern/subr_prf.c */ 203 const struct sysctlnode *rnode; 204 205 sysctl_createv(clog, 0, NULL, NULL, 206 CTLFLAG_PERMANENT, 207 CTLTYPE_NODE, "kern", NULL, 208 NULL, 0, NULL, 0, 209 CTL_KERN, CTL_EOL); 210 211 sysctl_createv(clog, 0, NULL, NULL, 212 CTLFLAG_PERMANENT, 213 CTLTYPE_STRING, "ostype", 214 SYSCTL_DESCR("Operating system type"), 215 NULL, 0, __UNCONST(&ostype), 0, 216 CTL_KERN, KERN_OSTYPE, CTL_EOL); 217 sysctl_createv(clog, 0, NULL, NULL, 218 CTLFLAG_PERMANENT, 219 CTLTYPE_STRING, "osrelease", 220 SYSCTL_DESCR("Operating system release"), 221 NULL, 0, __UNCONST(&osrelease), 0, 222 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 223 sysctl_createv(clog, 0, NULL, NULL, 224 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 225 CTLTYPE_INT, "osrevision", 226 SYSCTL_DESCR("Operating system revision"), 227 NULL, __NetBSD_Version__, NULL, 0, 228 CTL_KERN, KERN_OSREV, CTL_EOL); 229 sysctl_createv(clog, 0, NULL, NULL, 230 CTLFLAG_PERMANENT, 231 CTLTYPE_STRING, "version", 232 SYSCTL_DESCR("Kernel version"), 233 NULL, 0, __UNCONST(&version), 0, 234 CTL_KERN, KERN_VERSION, CTL_EOL); 235 sysctl_createv(clog, 0, NULL, NULL, 236 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 237 CTLTYPE_INT, "maxvnodes", 238 SYSCTL_DESCR("Maximum number of vnodes"), 239 sysctl_kern_maxvnodes, 0, NULL, 0, 240 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 241 sysctl_createv(clog, 0, NULL, NULL, 242 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 243 CTLTYPE_INT, "maxproc", 244 SYSCTL_DESCR("Maximum number of simultaneous processes"), 245 sysctl_kern_maxproc, 0, NULL, 0, 246 CTL_KERN, KERN_MAXPROC, CTL_EOL); 247 sysctl_createv(clog, 0, NULL, NULL, 248 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 249 CTLTYPE_INT, "maxfiles", 250 SYSCTL_DESCR("Maximum number of open files"), 251 NULL, 0, &maxfiles, 0, 252 CTL_KERN, KERN_MAXFILES, CTL_EOL); 253 sysctl_createv(clog, 0, NULL, NULL, 254 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 255 CTLTYPE_INT, "argmax", 256 SYSCTL_DESCR("Maximum number of bytes of arguments to " 257 "execve(2)"), 258 NULL, ARG_MAX, NULL, 0, 259 CTL_KERN, KERN_ARGMAX, CTL_EOL); 260 sysctl_createv(clog, 0, NULL, NULL, 261 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 262 CTLTYPE_STRING, "hostname", 263 SYSCTL_DESCR("System hostname"), 264 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 265 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 266 sysctl_createv(clog, 0, NULL, NULL, 267 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 268 CTLTYPE_INT, "hostid", 269 SYSCTL_DESCR("System host ID number"), 270 sysctl_kern_hostid, 0, NULL, 0, 271 CTL_KERN, KERN_HOSTID, CTL_EOL); 272 sysctl_createv(clog, 0, NULL, NULL, 273 CTLFLAG_PERMANENT, 274 CTLTYPE_STRUCT, "clockrate", 275 SYSCTL_DESCR("Kernel clock rates"), 276 sysctl_kern_clockrate, 0, NULL, 277 sizeof(struct clockinfo), 278 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 279 sysctl_createv(clog, 0, NULL, NULL, 280 CTLFLAG_PERMANENT, 281 CTLTYPE_INT, "hardclock_ticks", 282 SYSCTL_DESCR("Number of hardclock ticks"), 283 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 284 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 285 sysctl_createv(clog, 0, NULL, NULL, 286 CTLFLAG_PERMANENT, 287 CTLTYPE_STRUCT, "vnode", 288 SYSCTL_DESCR("System vnode table"), 289 sysctl_kern_vnode, 0, NULL, 0, 290 CTL_KERN, KERN_VNODE, CTL_EOL); 291 #ifndef GPROF 292 sysctl_createv(clog, 0, NULL, NULL, 293 CTLFLAG_PERMANENT, 294 CTLTYPE_NODE, "profiling", 295 SYSCTL_DESCR("Profiling information (not available)"), 296 sysctl_notavail, 0, NULL, 0, 297 CTL_KERN, KERN_PROF, CTL_EOL); 298 #endif 299 sysctl_createv(clog, 0, NULL, NULL, 300 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 301 CTLTYPE_INT, "posix1version", 302 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 303 "with which the operating system attempts " 304 "to comply"), 305 NULL, _POSIX_VERSION, NULL, 0, 306 CTL_KERN, KERN_POSIX1, CTL_EOL); 307 sysctl_createv(clog, 0, NULL, NULL, 308 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 309 CTLTYPE_INT, "ngroups", 310 SYSCTL_DESCR("Maximum number of supplemental groups"), 311 NULL, NGROUPS_MAX, NULL, 0, 312 CTL_KERN, KERN_NGROUPS, CTL_EOL); 313 sysctl_createv(clog, 0, NULL, NULL, 314 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 315 CTLTYPE_INT, "job_control", 316 SYSCTL_DESCR("Whether job control is available"), 317 NULL, 1, NULL, 0, 318 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 319 sysctl_createv(clog, 0, NULL, NULL, 320 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 321 CTLTYPE_INT, "saved_ids", 322 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 323 "available"), NULL, 324 #ifdef _POSIX_SAVED_IDS 325 1, 326 #else /* _POSIX_SAVED_IDS */ 327 0, 328 #endif /* _POSIX_SAVED_IDS */ 329 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 330 sysctl_createv(clog, 0, NULL, NULL, 331 CTLFLAG_PERMANENT|CTLFLAG_HEX, 332 CTLTYPE_INT, "boothowto", 333 SYSCTL_DESCR("Flags from boot loader"), 334 NULL, 0, &boothowto, sizeof(boothowto), 335 CTL_KERN, CTL_CREATE, CTL_EOL); 336 sysctl_createv(clog, 0, NULL, NULL, 337 CTLFLAG_PERMANENT, 338 CTLTYPE_STRUCT, "boottime", 339 SYSCTL_DESCR("System boot time"), 340 NULL, 0, &boottime, sizeof(boottime), 341 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 342 #ifdef COMPAT_50 343 { 344 extern struct timeval50 boottime50; 345 sysctl_createv(clog, 0, NULL, NULL, 346 CTLFLAG_PERMANENT, 347 CTLTYPE_STRUCT, "oboottime", 348 SYSCTL_DESCR("System boot time"), 349 NULL, 0, &boottime50, sizeof(boottime50), 350 CTL_KERN, KERN_OBOOTTIME, CTL_EOL); 351 } 352 #endif 353 sysctl_createv(clog, 0, NULL, NULL, 354 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 355 CTLTYPE_STRING, "domainname", 356 SYSCTL_DESCR("YP domain name"), 357 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 358 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 359 sysctl_createv(clog, 0, NULL, NULL, 360 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 361 CTLTYPE_INT, "maxpartitions", 362 SYSCTL_DESCR("Maximum number of partitions allowed per " 363 "disk"), 364 NULL, MAXPARTITIONS, NULL, 0, 365 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 366 sysctl_createv(clog, 0, NULL, NULL, 367 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 368 CTLTYPE_INT, "rawpartition", 369 SYSCTL_DESCR("Raw partition of a disk"), 370 NULL, RAW_PART, NULL, 0, 371 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 372 sysctl_createv(clog, 0, NULL, NULL, 373 CTLFLAG_PERMANENT, 374 CTLTYPE_STRUCT, "timex", NULL, 375 sysctl_notavail, 0, NULL, 0, 376 CTL_KERN, KERN_TIMEX, CTL_EOL); 377 sysctl_createv(clog, 0, NULL, NULL, 378 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 379 CTLTYPE_INT, "rtc_offset", 380 SYSCTL_DESCR("Offset of real time clock from UTC in " 381 "minutes"), 382 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 383 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 384 sysctl_createv(clog, 0, NULL, NULL, 385 CTLFLAG_PERMANENT, 386 CTLTYPE_STRING, "root_device", 387 SYSCTL_DESCR("Name of the root device"), 388 sysctl_root_device, 0, NULL, 0, 389 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 390 sysctl_createv(clog, 0, NULL, NULL, 391 CTLFLAG_PERMANENT, 392 CTLTYPE_INT, "msgbufsize", 393 SYSCTL_DESCR("Size of the kernel message buffer"), 394 sysctl_msgbuf, 0, NULL, 0, 395 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 396 sysctl_createv(clog, 0, NULL, NULL, 397 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 398 CTLTYPE_INT, "fsync", 399 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 400 "Synchronization Option is available on " 401 "this system"), 402 NULL, 1, NULL, 0, 403 CTL_KERN, KERN_FSYNC, CTL_EOL); 404 sysctl_createv(clog, 0, NULL, NULL, 405 CTLFLAG_PERMANENT, 406 CTLTYPE_NODE, "ipc", 407 SYSCTL_DESCR("SysV IPC options"), 408 NULL, 0, NULL, 0, 409 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 410 sysctl_createv(clog, 0, NULL, NULL, 411 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 412 CTLTYPE_INT, "sysvmsg", 413 SYSCTL_DESCR("System V style message support available"), 414 NULL, 415 #ifdef SYSVMSG 416 1, 417 #else /* SYSVMSG */ 418 0, 419 #endif /* SYSVMSG */ 420 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 421 sysctl_createv(clog, 0, NULL, NULL, 422 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 423 CTLTYPE_INT, "sysvsem", 424 SYSCTL_DESCR("System V style semaphore support " 425 "available"), NULL, 426 #ifdef SYSVSEM 427 1, 428 #else /* SYSVSEM */ 429 0, 430 #endif /* SYSVSEM */ 431 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 432 sysctl_createv(clog, 0, NULL, NULL, 433 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 434 CTLTYPE_INT, "sysvshm", 435 SYSCTL_DESCR("System V style shared memory support " 436 "available"), NULL, 437 #ifdef SYSVSHM 438 1, 439 #else /* SYSVSHM */ 440 0, 441 #endif /* SYSVSHM */ 442 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 443 sysctl_createv(clog, 0, NULL, NULL, 444 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 445 CTLTYPE_INT, "synchronized_io", 446 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 447 "I/O Option is available on this system"), 448 NULL, 1, NULL, 0, 449 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 450 sysctl_createv(clog, 0, NULL, NULL, 451 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 452 CTLTYPE_INT, "iov_max", 453 SYSCTL_DESCR("Maximum number of iovec structures per " 454 "process"), 455 NULL, IOV_MAX, NULL, 0, 456 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 457 sysctl_createv(clog, 0, NULL, NULL, 458 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 459 CTLTYPE_INT, "mapped_files", 460 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 461 "Files Option is available on this system"), 462 NULL, 1, NULL, 0, 463 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 464 sysctl_createv(clog, 0, NULL, NULL, 465 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 466 CTLTYPE_INT, "memlock", 467 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 468 "Locking Option is available on this " 469 "system"), 470 NULL, 1, NULL, 0, 471 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 472 sysctl_createv(clog, 0, NULL, NULL, 473 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 474 CTLTYPE_INT, "memlock_range", 475 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 476 "Locking Option is available on this " 477 "system"), 478 NULL, 1, NULL, 0, 479 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 480 sysctl_createv(clog, 0, NULL, NULL, 481 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 482 CTLTYPE_INT, "memory_protection", 483 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 484 "Protection Option is available on this " 485 "system"), 486 NULL, 1, NULL, 0, 487 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 488 sysctl_createv(clog, 0, NULL, NULL, 489 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 490 CTLTYPE_INT, "login_name_max", 491 SYSCTL_DESCR("Maximum login name length"), 492 NULL, LOGIN_NAME_MAX, NULL, 0, 493 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 494 sysctl_createv(clog, 0, NULL, NULL, 495 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 496 CTLTYPE_STRING, "defcorename", 497 SYSCTL_DESCR("Default core file name"), 498 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 499 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 500 sysctl_createv(clog, 0, NULL, NULL, 501 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 502 CTLTYPE_INT, "logsigexit", 503 SYSCTL_DESCR("Log process exit when caused by signals"), 504 NULL, 0, &kern_logsigexit, 0, 505 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 506 sysctl_createv(clog, 0, NULL, NULL, 507 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 508 CTLTYPE_INT, "fscale", 509 SYSCTL_DESCR("Kernel fixed-point scale factor"), 510 NULL, FSCALE, NULL, 0, 511 CTL_KERN, KERN_FSCALE, CTL_EOL); 512 sysctl_createv(clog, 0, NULL, NULL, 513 CTLFLAG_PERMANENT, 514 CTLTYPE_INT, "ccpu", 515 SYSCTL_DESCR("Scheduler exponential decay value"), 516 NULL, 0, &ccpu, 0, 517 CTL_KERN, KERN_CCPU, CTL_EOL); 518 sysctl_createv(clog, 0, NULL, NULL, 519 CTLFLAG_PERMANENT, 520 CTLTYPE_STRUCT, "cp_time", 521 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 522 sysctl_kern_cptime, 0, NULL, 0, 523 CTL_KERN, KERN_CP_TIME, CTL_EOL); 524 sysctl_createv(clog, 0, NULL, NULL, 525 CTLFLAG_PERMANENT, 526 CTLTYPE_INT, "msgbuf", 527 SYSCTL_DESCR("Kernel message buffer"), 528 sysctl_msgbuf, 0, NULL, 0, 529 CTL_KERN, KERN_MSGBUF, CTL_EOL); 530 sysctl_createv(clog, 0, NULL, NULL, 531 CTLFLAG_PERMANENT, 532 CTLTYPE_STRUCT, "consdev", 533 SYSCTL_DESCR("Console device"), 534 sysctl_consdev, 0, NULL, sizeof(dev_t), 535 CTL_KERN, KERN_CONSDEV, CTL_EOL); 536 #if NPTY > 0 537 sysctl_createv(clog, 0, NULL, NULL, 538 CTLFLAG_PERMANENT, 539 CTLTYPE_INT, "maxptys", 540 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 541 sysctl_kern_maxptys, 0, NULL, 0, 542 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 543 #endif /* NPTY > 0 */ 544 sysctl_createv(clog, 0, NULL, NULL, 545 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 546 CTLTYPE_INT, "maxphys", 547 SYSCTL_DESCR("Maximum raw I/O transfer size"), 548 NULL, MAXPHYS, NULL, 0, 549 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 550 sysctl_createv(clog, 0, NULL, NULL, 551 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 552 CTLTYPE_INT, "sbmax", 553 SYSCTL_DESCR("Maximum socket buffer size"), 554 sysctl_kern_sbmax, 0, NULL, 0, 555 CTL_KERN, KERN_SBMAX, CTL_EOL); 556 sysctl_createv(clog, 0, NULL, NULL, 557 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 558 CTLTYPE_INT, "monotonic_clock", 559 SYSCTL_DESCR("Implementation version of the POSIX " 560 "1003.1b Monotonic Clock Option"), 561 /* XXX _POSIX_VERSION */ 562 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 563 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 564 sysctl_createv(clog, 0, NULL, NULL, 565 CTLFLAG_PERMANENT, 566 CTLTYPE_INT, "urandom", 567 SYSCTL_DESCR("Random integer value"), 568 sysctl_kern_urnd, 0, NULL, 0, 569 CTL_KERN, KERN_URND, CTL_EOL); 570 sysctl_createv(clog, 0, NULL, NULL, 571 CTLFLAG_PERMANENT, 572 CTLTYPE_INT, "arandom", 573 SYSCTL_DESCR("n bytes of random data"), 574 sysctl_kern_arnd, 0, NULL, 0, 575 CTL_KERN, KERN_ARND, CTL_EOL); 576 sysctl_createv(clog, 0, NULL, NULL, 577 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 578 CTLTYPE_INT, "labelsector", 579 SYSCTL_DESCR("Sector number containing the disklabel"), 580 NULL, LABELSECTOR, NULL, 0, 581 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 582 sysctl_createv(clog, 0, NULL, NULL, 583 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 584 CTLTYPE_INT, "labeloffset", 585 SYSCTL_DESCR("Offset of the disklabel within the " 586 "sector"), 587 NULL, LABELOFFSET, NULL, 0, 588 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 589 sysctl_createv(clog, 0, NULL, NULL, 590 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 591 CTLTYPE_INT, "labelusesmbr", 592 SYSCTL_DESCR("disklabel is inside MBR partition"), 593 NULL, LABELUSESMBR, NULL, 0, 594 CTL_KERN, CTL_CREATE, CTL_EOL); 595 sysctl_createv(clog, 0, NULL, NULL, 596 CTLFLAG_PERMANENT, 597 CTLTYPE_NODE, "lwp", 598 SYSCTL_DESCR("System-wide LWP information"), 599 sysctl_kern_lwp, 0, NULL, 0, 600 CTL_KERN, KERN_LWP, CTL_EOL); 601 sysctl_createv(clog, 0, NULL, NULL, 602 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 603 CTLTYPE_INT, "forkfsleep", 604 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 605 "to process limits"), 606 sysctl_kern_forkfsleep, 0, NULL, 0, 607 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 608 sysctl_createv(clog, 0, NULL, NULL, 609 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 610 CTLTYPE_INT, "posix_threads", 611 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 612 "Threads option to which the system " 613 "attempts to conform"), 614 /* XXX _POSIX_VERSION */ 615 NULL, _POSIX_THREADS, NULL, 0, 616 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 617 sysctl_createv(clog, 0, NULL, NULL, 618 CTLFLAG_PERMANENT, 619 CTLTYPE_INT, "posix_semaphores", 620 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 621 "Semaphores option to which the system " 622 "attempts to conform"), NULL, 623 0, &posix_semaphores, 624 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 625 sysctl_createv(clog, 0, NULL, NULL, 626 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 627 CTLTYPE_INT, "posix_barriers", 628 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 629 "Barriers option to which the system " 630 "attempts to conform"), 631 /* XXX _POSIX_VERSION */ 632 NULL, _POSIX_BARRIERS, NULL, 0, 633 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 634 sysctl_createv(clog, 0, NULL, NULL, 635 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 636 CTLTYPE_INT, "posix_timers", 637 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 638 "Timers option to which the system " 639 "attempts to conform"), 640 /* XXX _POSIX_VERSION */ 641 NULL, _POSIX_TIMERS, NULL, 0, 642 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 643 sysctl_createv(clog, 0, NULL, NULL, 644 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 645 CTLTYPE_INT, "posix_spin_locks", 646 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 647 "Locks option to which the system attempts " 648 "to conform"), 649 /* XXX _POSIX_VERSION */ 650 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 651 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 652 sysctl_createv(clog, 0, NULL, NULL, 653 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 654 CTLTYPE_INT, "posix_reader_writer_locks", 655 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 656 "Read-Write Locks option to which the " 657 "system attempts to conform"), 658 /* XXX _POSIX_VERSION */ 659 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 660 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 661 sysctl_createv(clog, 0, NULL, NULL, 662 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 663 CTLTYPE_INT, "dump_on_panic", 664 SYSCTL_DESCR("Perform a crash dump on system panic"), 665 NULL, 0, &dumponpanic, 0, 666 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 667 #ifdef DIAGNOSTIC 668 sysctl_createv(clog, 0, NULL, NULL, 669 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 670 CTLTYPE_INT, "panic_now", 671 SYSCTL_DESCR("Trigger a panic"), 672 sysctl_kern_trigger_panic, 0, NULL, 0, 673 CTL_KERN, CTL_CREATE, CTL_EOL); 674 #endif 675 sysctl_createv(clog, 0, NULL, NULL, 676 CTLFLAG_PERMANENT, 677 CTLTYPE_INT, "root_partition", 678 SYSCTL_DESCR("Root partition on the root device"), 679 sysctl_kern_root_partition, 0, NULL, 0, 680 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 681 sysctl_createv(clog, 0, NULL, NULL, 682 CTLFLAG_PERMANENT, 683 CTLTYPE_STRUCT, "drivers", 684 SYSCTL_DESCR("List of all drivers with block and " 685 "character device numbers"), 686 sysctl_kern_drivers, 0, NULL, 0, 687 CTL_KERN, KERN_DRIVERS, CTL_EOL); 688 sysctl_createv(clog, 0, NULL, NULL, 689 CTLFLAG_PERMANENT, 690 CTLTYPE_STRUCT, "cp_id", 691 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 692 sysctl_kern_cpid, 0, NULL, 0, 693 CTL_KERN, KERN_CP_ID, CTL_EOL); 694 sysctl_createv(clog, 0, NULL, &rnode, 695 CTLFLAG_PERMANENT, 696 CTLTYPE_NODE, "coredump", 697 SYSCTL_DESCR("Coredump settings."), 698 NULL, 0, NULL, 0, 699 CTL_KERN, CTL_CREATE, CTL_EOL); 700 sysctl_createv(clog, 0, &rnode, &rnode, 701 CTLFLAG_PERMANENT, 702 CTLTYPE_NODE, "setid", 703 SYSCTL_DESCR("Set-id processes' coredump settings."), 704 NULL, 0, NULL, 0, 705 CTL_CREATE, CTL_EOL); 706 sysctl_createv(clog, 0, &rnode, NULL, 707 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 708 CTLTYPE_INT, "dump", 709 SYSCTL_DESCR("Allow set-id processes to dump core."), 710 sysctl_security_setidcore, 0, &security_setidcore_dump, 711 sizeof(security_setidcore_dump), 712 CTL_CREATE, CTL_EOL); 713 sysctl_createv(clog, 0, &rnode, NULL, 714 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 715 CTLTYPE_STRING, "path", 716 SYSCTL_DESCR("Path pattern for set-id coredumps."), 717 sysctl_security_setidcorename, 0, 718 &security_setidcore_path, 719 sizeof(security_setidcore_path), 720 CTL_CREATE, CTL_EOL); 721 sysctl_createv(clog, 0, &rnode, NULL, 722 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 723 CTLTYPE_INT, "owner", 724 SYSCTL_DESCR("Owner id for set-id processes' cores."), 725 sysctl_security_setidcore, 0, &security_setidcore_owner, 726 0, 727 CTL_CREATE, CTL_EOL); 728 sysctl_createv(clog, 0, &rnode, NULL, 729 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 730 CTLTYPE_INT, "group", 731 SYSCTL_DESCR("Group id for set-id processes' cores."), 732 sysctl_security_setidcore, 0, &security_setidcore_group, 733 0, 734 CTL_CREATE, CTL_EOL); 735 sysctl_createv(clog, 0, &rnode, NULL, 736 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 737 CTLTYPE_INT, "mode", 738 SYSCTL_DESCR("Mode for set-id processes' cores."), 739 sysctl_security_setidcore, 0, &security_setidcore_mode, 740 0, 741 CTL_CREATE, CTL_EOL); 742 sysctl_createv(clog, 0, NULL, NULL, 743 #ifndef KERN_SA 744 CTLFLAG_IMMEDIATE| 745 #endif 746 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 747 CTLTYPE_INT, "no_sa_support", 748 SYSCTL_DESCR("0 if the kernel supports SA, otherwise " 749 "it doesn't"), 750 NULL, 751 #ifndef KERN_SA 752 1, NULL, 753 #else 754 0, &sa_system_disabled, 755 #endif 756 0, 757 CTL_KERN, CTL_CREATE, CTL_EOL); 758 /* kern.posix. */ 759 sysctl_createv(clog, 0, NULL, &rnode, 760 CTLFLAG_PERMANENT, 761 CTLTYPE_NODE, "posix", 762 SYSCTL_DESCR("POSIX options"), 763 NULL, 0, NULL, 0, 764 CTL_KERN, CTL_CREATE, CTL_EOL); 765 sysctl_createv(clog, 0, &rnode, NULL, 766 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 767 CTLTYPE_INT, "semmax", 768 SYSCTL_DESCR("Maximal number of semaphores"), 769 NULL, 0, &ksem_max, 0, 770 CTL_CREATE, CTL_EOL); 771 } 772 773 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 774 { 775 u_int u; 776 u_quad_t q; 777 778 sysctl_createv(clog, 0, NULL, NULL, 779 CTLFLAG_PERMANENT, 780 CTLTYPE_NODE, "hw", NULL, 781 NULL, 0, NULL, 0, 782 CTL_HW, CTL_EOL); 783 784 sysctl_createv(clog, 0, NULL, NULL, 785 CTLFLAG_PERMANENT, 786 CTLTYPE_STRING, "machine", 787 SYSCTL_DESCR("Machine class"), 788 NULL, 0, machine, 0, 789 CTL_HW, HW_MACHINE, CTL_EOL); 790 sysctl_createv(clog, 0, NULL, NULL, 791 CTLFLAG_PERMANENT, 792 CTLTYPE_STRING, "model", 793 SYSCTL_DESCR("Machine model"), 794 NULL, 0, cpu_model, 0, 795 CTL_HW, HW_MODEL, CTL_EOL); 796 sysctl_createv(clog, 0, NULL, NULL, 797 CTLFLAG_PERMANENT, 798 CTLTYPE_INT, "ncpu", 799 SYSCTL_DESCR("Number of CPUs configured"), 800 NULL, 0, &ncpu, 0, 801 CTL_HW, HW_NCPU, CTL_EOL); 802 sysctl_createv(clog, 0, NULL, NULL, 803 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 804 CTLTYPE_INT, "byteorder", 805 SYSCTL_DESCR("System byte order"), 806 NULL, BYTE_ORDER, NULL, 0, 807 CTL_HW, HW_BYTEORDER, CTL_EOL); 808 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 809 UINT_MAX : physmem * PAGE_SIZE; 810 sysctl_createv(clog, 0, NULL, NULL, 811 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 812 CTLTYPE_INT, "physmem", 813 SYSCTL_DESCR("Bytes of physical memory"), 814 NULL, u, NULL, 0, 815 CTL_HW, HW_PHYSMEM, CTL_EOL); 816 sysctl_createv(clog, 0, NULL, NULL, 817 CTLFLAG_PERMANENT, 818 CTLTYPE_INT, "usermem", 819 SYSCTL_DESCR("Bytes of non-kernel memory"), 820 sysctl_hw_usermem, 0, NULL, 0, 821 CTL_HW, HW_USERMEM, CTL_EOL); 822 sysctl_createv(clog, 0, NULL, NULL, 823 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 824 CTLTYPE_INT, "pagesize", 825 SYSCTL_DESCR("Software page size"), 826 NULL, PAGE_SIZE, NULL, 0, 827 CTL_HW, HW_PAGESIZE, CTL_EOL); 828 sysctl_createv(clog, 0, NULL, NULL, 829 CTLFLAG_PERMANENT, 830 CTLTYPE_STRING, "machine_arch", 831 SYSCTL_DESCR("Machine CPU class"), 832 NULL, 0, machine_arch, 0, 833 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 834 sysctl_createv(clog, 0, NULL, NULL, 835 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 836 CTLTYPE_INT, "alignbytes", 837 SYSCTL_DESCR("Alignment constraint for all possible " 838 "data types"), 839 NULL, ALIGNBYTES, NULL, 0, 840 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 841 sysctl_createv(clog, 0, NULL, NULL, 842 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 843 CTLTYPE_STRING, "cnmagic", 844 SYSCTL_DESCR("Console magic key sequence"), 845 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 846 CTL_HW, HW_CNMAGIC, CTL_EOL); 847 q = (u_quad_t)physmem * PAGE_SIZE; 848 sysctl_createv(clog, 0, NULL, NULL, 849 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 850 CTLTYPE_QUAD, "physmem64", 851 SYSCTL_DESCR("Bytes of physical memory"), 852 NULL, q, NULL, 0, 853 CTL_HW, HW_PHYSMEM64, CTL_EOL); 854 sysctl_createv(clog, 0, NULL, NULL, 855 CTLFLAG_PERMANENT, 856 CTLTYPE_QUAD, "usermem64", 857 SYSCTL_DESCR("Bytes of non-kernel memory"), 858 sysctl_hw_usermem, 0, NULL, 0, 859 CTL_HW, HW_USERMEM64, CTL_EOL); 860 sysctl_createv(clog, 0, NULL, NULL, 861 CTLFLAG_PERMANENT, 862 CTLTYPE_INT, "ncpuonline", 863 SYSCTL_DESCR("Number of CPUs online"), 864 NULL, 0, &ncpuonline, 0, 865 CTL_HW, HW_NCPUONLINE, CTL_EOL); 866 } 867 868 #ifdef DEBUG 869 /* 870 * Debugging related system variables. 871 */ 872 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 873 struct ctldebug debug5, debug6, debug7, debug8, debug9; 874 struct ctldebug debug10, debug11, debug12, debug13, debug14; 875 struct ctldebug debug15, debug16, debug17, debug18, debug19; 876 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 877 &debug0, &debug1, &debug2, &debug3, &debug4, 878 &debug5, &debug6, &debug7, &debug8, &debug9, 879 &debug10, &debug11, &debug12, &debug13, &debug14, 880 &debug15, &debug16, &debug17, &debug18, &debug19, 881 }; 882 883 /* 884 * this setup routine is a replacement for debug_sysctl() 885 * 886 * note that it creates several nodes per defined debug variable 887 */ 888 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 889 { 890 struct ctldebug *cdp; 891 char nodename[20]; 892 int i; 893 894 /* 895 * two ways here: 896 * 897 * the "old" way (debug.name -> value) which was emulated by 898 * the sysctl(8) binary 899 * 900 * the new way, which the sysctl(8) binary was actually using 901 902 node debug 903 node debug.0 904 string debug.0.name 905 int debug.0.value 906 int debug.name 907 908 */ 909 910 sysctl_createv(clog, 0, NULL, NULL, 911 CTLFLAG_PERMANENT, 912 CTLTYPE_NODE, "debug", NULL, 913 NULL, 0, NULL, 0, 914 CTL_DEBUG, CTL_EOL); 915 916 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 917 cdp = debugvars[i]; 918 if (cdp->debugname == NULL || cdp->debugvar == NULL) 919 continue; 920 921 snprintf(nodename, sizeof(nodename), "debug%d", i); 922 sysctl_createv(clog, 0, NULL, NULL, 923 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 924 CTLTYPE_NODE, nodename, NULL, 925 NULL, 0, NULL, 0, 926 CTL_DEBUG, i, CTL_EOL); 927 sysctl_createv(clog, 0, NULL, NULL, 928 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 929 CTLTYPE_STRING, "name", NULL, 930 /*XXXUNCONST*/ 931 NULL, 0, __UNCONST(cdp->debugname), 0, 932 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 933 sysctl_createv(clog, 0, NULL, NULL, 934 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 935 CTLTYPE_INT, "value", NULL, 936 NULL, 0, cdp->debugvar, 0, 937 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 938 sysctl_createv(clog, 0, NULL, NULL, 939 CTLFLAG_PERMANENT, 940 CTLTYPE_INT, cdp->debugname, NULL, 941 NULL, 0, cdp->debugvar, 0, 942 CTL_DEBUG, CTL_CREATE, CTL_EOL); 943 } 944 } 945 #endif /* DEBUG */ 946 947 /* 948 * ******************************************************************** 949 * section 2: private node-specific helper routines. 950 * ******************************************************************** 951 */ 952 953 #ifdef DIAGNOSTIC 954 static int 955 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 956 { 957 int newtrig, error; 958 struct sysctlnode node; 959 960 newtrig = 0; 961 node = *rnode; 962 node.sysctl_data = &newtrig; 963 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 964 if (error || newp == NULL) 965 return (error); 966 967 if (newtrig != 0) 968 panic("Panic triggered"); 969 970 return (error); 971 } 972 #endif 973 974 /* 975 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 976 * new value is lower than desiredvnodes and then calls reinit 977 * routines that needs to adjust to the new value. 978 */ 979 static int 980 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 981 { 982 int error, new_vnodes, old_vnodes, new_max; 983 struct sysctlnode node; 984 985 new_vnodes = desiredvnodes; 986 node = *rnode; 987 node.sysctl_data = &new_vnodes; 988 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 989 if (error || newp == NULL) 990 return (error); 991 992 /* Limits: 75% of KVA and physical memory. */ 993 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 994 if (new_vnodes > new_max) 995 new_vnodes = new_max; 996 997 old_vnodes = desiredvnodes; 998 desiredvnodes = new_vnodes; 999 if (new_vnodes < old_vnodes) { 1000 error = vfs_drainvnodes(new_vnodes); 1001 if (error) { 1002 desiredvnodes = old_vnodes; 1003 return (error); 1004 } 1005 } 1006 vfs_reinit(); 1007 nchreinit(); 1008 1009 return (0); 1010 } 1011 1012 /* 1013 * sysctl helper routine for rtc_offset - set time after changes 1014 */ 1015 static int 1016 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1017 { 1018 struct timespec ts, delta; 1019 int error, new_rtc_offset; 1020 struct sysctlnode node; 1021 1022 new_rtc_offset = rtc_offset; 1023 node = *rnode; 1024 node.sysctl_data = &new_rtc_offset; 1025 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1026 if (error || newp == NULL) 1027 return (error); 1028 1029 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1030 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1031 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1032 return (EPERM); 1033 if (rtc_offset == new_rtc_offset) 1034 return (0); 1035 1036 /* if we change the offset, adjust the time */ 1037 nanotime(&ts); 1038 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1039 delta.tv_nsec = 0; 1040 timespecadd(&ts, &delta, &ts); 1041 rtc_offset = new_rtc_offset; 1042 return (settime(l->l_proc, &ts)); 1043 } 1044 1045 /* 1046 * sysctl helper routine for kern.maxproc. Ensures that the new 1047 * values are not too low or too high. 1048 */ 1049 static int 1050 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1051 { 1052 int error, nmaxproc; 1053 struct sysctlnode node; 1054 1055 nmaxproc = maxproc; 1056 node = *rnode; 1057 node.sysctl_data = &nmaxproc; 1058 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1059 if (error || newp == NULL) 1060 return (error); 1061 1062 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1063 return (EINVAL); 1064 #ifdef __HAVE_CPU_MAXPROC 1065 if (nmaxproc > cpu_maxproc()) 1066 return (EINVAL); 1067 #endif 1068 maxproc = nmaxproc; 1069 1070 return (0); 1071 } 1072 1073 /* 1074 * sysctl helper function for kern.hostid. The hostid is a long, but 1075 * we export it as an int, so we need to give it a little help. 1076 */ 1077 static int 1078 sysctl_kern_hostid(SYSCTLFN_ARGS) 1079 { 1080 int error, inthostid; 1081 struct sysctlnode node; 1082 1083 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1084 node = *rnode; 1085 node.sysctl_data = &inthostid; 1086 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1087 if (error || newp == NULL) 1088 return (error); 1089 1090 hostid = (unsigned)inthostid; 1091 1092 return (0); 1093 } 1094 1095 /* 1096 * sysctl helper function for kern.hostname and kern.domainnname. 1097 * resets the relevant recorded length when the underlying name is 1098 * changed. 1099 */ 1100 static int 1101 sysctl_setlen(SYSCTLFN_ARGS) 1102 { 1103 int error; 1104 1105 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1106 if (error || newp == NULL) 1107 return (error); 1108 1109 switch (rnode->sysctl_num) { 1110 case KERN_HOSTNAME: 1111 hostnamelen = strlen((const char*)rnode->sysctl_data); 1112 break; 1113 case KERN_DOMAINNAME: 1114 domainnamelen = strlen((const char*)rnode->sysctl_data); 1115 break; 1116 } 1117 1118 return (0); 1119 } 1120 1121 /* 1122 * sysctl helper routine for kern.clockrate. Assembles a struct on 1123 * the fly to be returned to the caller. 1124 */ 1125 static int 1126 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1127 { 1128 struct clockinfo clkinfo; 1129 struct sysctlnode node; 1130 1131 clkinfo.tick = tick; 1132 clkinfo.tickadj = tickadj; 1133 clkinfo.hz = hz; 1134 clkinfo.profhz = profhz; 1135 clkinfo.stathz = stathz ? stathz : hz; 1136 1137 node = *rnode; 1138 node.sysctl_data = &clkinfo; 1139 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1140 } 1141 1142 /* 1143 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1144 * former it merely checks the message buffer is set up. For the latter, 1145 * it also copies out the data if necessary. 1146 */ 1147 static int 1148 sysctl_msgbuf(SYSCTLFN_ARGS) 1149 { 1150 char *where = oldp; 1151 size_t len, maxlen; 1152 long beg, end; 1153 extern kmutex_t log_lock; 1154 int error; 1155 1156 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1157 msgbufenabled = 0; 1158 return (ENXIO); 1159 } 1160 1161 switch (rnode->sysctl_num) { 1162 case KERN_MSGBUFSIZE: { 1163 struct sysctlnode node = *rnode; 1164 int msg_bufs = (int)msgbufp->msg_bufs; 1165 node.sysctl_data = &msg_bufs; 1166 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1167 } 1168 case KERN_MSGBUF: 1169 break; 1170 default: 1171 return (EOPNOTSUPP); 1172 } 1173 1174 if (newp != NULL) 1175 return (EPERM); 1176 1177 if (oldp == NULL) { 1178 /* always return full buffer size */ 1179 *oldlenp = msgbufp->msg_bufs; 1180 return (0); 1181 } 1182 1183 sysctl_unlock(); 1184 1185 /* 1186 * First, copy from the write pointer to the end of 1187 * message buffer. 1188 */ 1189 error = 0; 1190 mutex_spin_enter(&log_lock); 1191 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1192 beg = msgbufp->msg_bufx; 1193 end = msgbufp->msg_bufs; 1194 mutex_spin_exit(&log_lock); 1195 1196 while (maxlen > 0) { 1197 len = MIN(end - beg, maxlen); 1198 if (len == 0) 1199 break; 1200 /* XXX unlocked, but hardly matters. */ 1201 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1202 if (error) 1203 break; 1204 where += len; 1205 maxlen -= len; 1206 1207 /* 1208 * ... then, copy from the beginning of message buffer to 1209 * the write pointer. 1210 */ 1211 beg = 0; 1212 end = msgbufp->msg_bufx; 1213 } 1214 1215 sysctl_relock(); 1216 return (error); 1217 } 1218 1219 /* 1220 * sysctl helper routine for kern.defcorename. In the case of a new 1221 * string being assigned, check that it's not a zero-length string. 1222 * (XXX the check in -current doesn't work, but do we really care?) 1223 */ 1224 static int 1225 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1226 { 1227 int error; 1228 char *newcorename; 1229 struct sysctlnode node; 1230 1231 newcorename = PNBUF_GET(); 1232 node = *rnode; 1233 node.sysctl_data = &newcorename[0]; 1234 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1235 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1236 if (error || newp == NULL) { 1237 goto done; 1238 } 1239 1240 /* 1241 * when sysctl_lookup() deals with a string, it's guaranteed 1242 * to come back nul terminated. So there. :) 1243 */ 1244 if (strlen(newcorename) == 0) { 1245 error = EINVAL; 1246 } else { 1247 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1248 error = 0; 1249 } 1250 done: 1251 PNBUF_PUT(newcorename); 1252 return error; 1253 } 1254 1255 /* 1256 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1257 * across all cpus. 1258 */ 1259 static int 1260 sysctl_kern_cptime(SYSCTLFN_ARGS) 1261 { 1262 struct sysctlnode node = *rnode; 1263 uint64_t *cp_time = NULL; 1264 int error, n = ncpu, i; 1265 struct cpu_info *ci; 1266 CPU_INFO_ITERATOR cii; 1267 1268 /* 1269 * if you specifically pass a buffer that is the size of the 1270 * sum, or if you are probing for the size, you get the "sum" 1271 * of cp_time (and the size thereof) across all processors. 1272 * 1273 * alternately, you can pass an additional mib number and get 1274 * cp_time for that particular processor. 1275 */ 1276 switch (namelen) { 1277 case 0: 1278 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1279 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1280 n = -1; /* SUM */ 1281 } 1282 else { 1283 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1284 n = -2; /* ALL */ 1285 } 1286 break; 1287 case 1: 1288 if (name[0] < 0 || name[0] >= n) 1289 return (ENOENT); /* ENOSUCHPROCESSOR */ 1290 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1291 n = name[0]; 1292 /* 1293 * adjust these so that sysctl_lookup() will be happy 1294 */ 1295 name++; 1296 namelen--; 1297 break; 1298 default: 1299 return (EINVAL); 1300 } 1301 1302 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1303 if (cp_time == NULL) 1304 return (ENOMEM); 1305 node.sysctl_data = cp_time; 1306 memset(cp_time, 0, node.sysctl_size); 1307 1308 for (CPU_INFO_FOREACH(cii, ci)) { 1309 if (n <= 0) { 1310 for (i = 0; i < CPUSTATES; i++) { 1311 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1312 } 1313 } 1314 /* 1315 * if a specific processor was requested and we just 1316 * did it, we're done here 1317 */ 1318 if (n == 0) 1319 break; 1320 /* 1321 * if doing "all", skip to next cp_time set for next processor 1322 */ 1323 if (n == -2) 1324 cp_time += CPUSTATES; 1325 /* 1326 * if we're doing a specific processor, we're one 1327 * processor closer 1328 */ 1329 if (n > 0) 1330 n--; 1331 } 1332 1333 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1334 kmem_free(node.sysctl_data, node.sysctl_size); 1335 return (error); 1336 } 1337 1338 #if NPTY > 0 1339 /* 1340 * sysctl helper routine for kern.maxptys. Ensures that any new value 1341 * is acceptable to the pty subsystem. 1342 */ 1343 static int 1344 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1345 { 1346 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1347 int error, xmax; 1348 struct sysctlnode node; 1349 1350 /* get current value of maxptys */ 1351 xmax = pty_maxptys(0, 0); 1352 1353 node = *rnode; 1354 node.sysctl_data = &xmax; 1355 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1356 if (error || newp == NULL) 1357 return (error); 1358 1359 if (xmax != pty_maxptys(xmax, 1)) 1360 return (EINVAL); 1361 1362 return (0); 1363 } 1364 #endif /* NPTY > 0 */ 1365 1366 /* 1367 * sysctl helper routine for kern.sbmax. Basically just ensures that 1368 * any new value is not too small. 1369 */ 1370 static int 1371 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1372 { 1373 int error, new_sbmax; 1374 struct sysctlnode node; 1375 1376 new_sbmax = sb_max; 1377 node = *rnode; 1378 node.sysctl_data = &new_sbmax; 1379 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1380 if (error || newp == NULL) 1381 return (error); 1382 1383 KERNEL_LOCK(1, NULL); 1384 error = sb_max_set(new_sbmax); 1385 KERNEL_UNLOCK_ONE(NULL); 1386 1387 return (error); 1388 } 1389 1390 /* 1391 * sysctl helper routine for kern.urandom node. Picks a random number 1392 * for you. 1393 */ 1394 static int 1395 sysctl_kern_urnd(SYSCTLFN_ARGS) 1396 { 1397 int v, rv; 1398 1399 rv = cprng_strong(sysctl_prng, &v, sizeof(v)); 1400 if (rv == sizeof(v)) { 1401 struct sysctlnode node = *rnode; 1402 node.sysctl_data = &v; 1403 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1404 } 1405 else 1406 return (EIO); /*XXX*/ 1407 } 1408 1409 /* 1410 * sysctl helper routine for kern.arandom node. Picks a random number 1411 * for you. 1412 */ 1413 static int 1414 sysctl_kern_arnd(SYSCTLFN_ARGS) 1415 { 1416 int error; 1417 void *v; 1418 struct sysctlnode node = *rnode; 1419 1420 if (*oldlenp == 0) 1421 return 0; 1422 if (*oldlenp > 8192) 1423 return E2BIG; 1424 1425 v = kmem_alloc(*oldlenp, KM_SLEEP); 1426 cprng_fast(v, *oldlenp); 1427 node.sysctl_data = v; 1428 node.sysctl_size = *oldlenp; 1429 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1430 kmem_free(v, *oldlenp); 1431 return error; 1432 } 1433 /* 1434 * sysctl helper routine to do kern.lwp.* work. 1435 */ 1436 static int 1437 sysctl_kern_lwp(SYSCTLFN_ARGS) 1438 { 1439 struct kinfo_lwp klwp; 1440 struct proc *p; 1441 struct lwp *l2, *l3; 1442 char *where, *dp; 1443 int pid, elem_size, elem_count; 1444 int buflen, needed, error; 1445 bool gotit; 1446 1447 if (namelen == 1 && name[0] == CTL_QUERY) 1448 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1449 1450 dp = where = oldp; 1451 buflen = where != NULL ? *oldlenp : 0; 1452 error = needed = 0; 1453 1454 if (newp != NULL || namelen != 3) 1455 return (EINVAL); 1456 pid = name[0]; 1457 elem_size = name[1]; 1458 elem_count = name[2]; 1459 1460 sysctl_unlock(); 1461 if (pid == -1) { 1462 mutex_enter(proc_lock); 1463 PROCLIST_FOREACH(p, &allproc) { 1464 /* Grab a hold on the process. */ 1465 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1466 continue; 1467 } 1468 mutex_exit(proc_lock); 1469 1470 mutex_enter(p->p_lock); 1471 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1472 if (buflen >= elem_size && elem_count > 0) { 1473 lwp_lock(l2); 1474 fill_lwp(l2, &klwp); 1475 lwp_unlock(l2); 1476 mutex_exit(p->p_lock); 1477 1478 /* 1479 * Copy out elem_size, but not 1480 * larger than the size of a 1481 * struct kinfo_proc2. 1482 */ 1483 error = dcopyout(l, &klwp, dp, 1484 min(sizeof(klwp), elem_size)); 1485 if (error) { 1486 rw_exit(&p->p_reflock); 1487 goto cleanup; 1488 } 1489 mutex_enter(p->p_lock); 1490 LIST_FOREACH(l3, &p->p_lwps, 1491 l_sibling) { 1492 if (l2 == l3) 1493 break; 1494 } 1495 if (l3 == NULL) { 1496 mutex_exit(p->p_lock); 1497 rw_exit(&p->p_reflock); 1498 error = EAGAIN; 1499 goto cleanup; 1500 } 1501 dp += elem_size; 1502 buflen -= elem_size; 1503 elem_count--; 1504 } 1505 needed += elem_size; 1506 } 1507 mutex_exit(p->p_lock); 1508 1509 /* Drop reference to process. */ 1510 mutex_enter(proc_lock); 1511 rw_exit(&p->p_reflock); 1512 } 1513 mutex_exit(proc_lock); 1514 } else { 1515 mutex_enter(proc_lock); 1516 p = proc_find(pid); 1517 if (p == NULL) { 1518 error = ESRCH; 1519 mutex_exit(proc_lock); 1520 goto cleanup; 1521 } 1522 /* Grab a hold on the process. */ 1523 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1524 mutex_exit(proc_lock); 1525 if (!gotit) { 1526 error = ESRCH; 1527 goto cleanup; 1528 } 1529 1530 mutex_enter(p->p_lock); 1531 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1532 if (buflen >= elem_size && elem_count > 0) { 1533 lwp_lock(l2); 1534 fill_lwp(l2, &klwp); 1535 lwp_unlock(l2); 1536 mutex_exit(p->p_lock); 1537 /* 1538 * Copy out elem_size, but not larger than 1539 * the size of a struct kinfo_proc2. 1540 */ 1541 error = dcopyout(l, &klwp, dp, 1542 min(sizeof(klwp), elem_size)); 1543 if (error) { 1544 rw_exit(&p->p_reflock); 1545 goto cleanup; 1546 } 1547 mutex_enter(p->p_lock); 1548 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1549 if (l2 == l3) 1550 break; 1551 } 1552 if (l3 == NULL) { 1553 mutex_exit(p->p_lock); 1554 rw_exit(&p->p_reflock); 1555 error = EAGAIN; 1556 goto cleanup; 1557 } 1558 dp += elem_size; 1559 buflen -= elem_size; 1560 elem_count--; 1561 } 1562 needed += elem_size; 1563 } 1564 mutex_exit(p->p_lock); 1565 1566 /* Drop reference to process. */ 1567 rw_exit(&p->p_reflock); 1568 } 1569 1570 if (where != NULL) { 1571 *oldlenp = dp - where; 1572 if (needed > *oldlenp) { 1573 sysctl_relock(); 1574 return (ENOMEM); 1575 } 1576 } else { 1577 needed += KERN_LWPSLOP; 1578 *oldlenp = needed; 1579 } 1580 error = 0; 1581 cleanup: 1582 sysctl_relock(); 1583 return (error); 1584 } 1585 1586 /* 1587 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1588 * given value is not too large or two small, and is at least one 1589 * timer tick if not zero. 1590 */ 1591 static int 1592 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1593 { 1594 /* userland sees value in ms, internally is in ticks */ 1595 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1596 int error, timo, lsleep; 1597 struct sysctlnode node; 1598 1599 lsleep = forkfsleep * 1000 / hz; 1600 node = *rnode; 1601 node.sysctl_data = &lsleep; 1602 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1603 if (error || newp == NULL) 1604 return (error); 1605 1606 /* refuse negative values, and overly 'long time' */ 1607 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1608 return (EINVAL); 1609 1610 timo = mstohz(lsleep); 1611 1612 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1613 if (lsleep != 0 && timo == 0) 1614 forkfsleep = 1; 1615 else 1616 forkfsleep = timo; 1617 1618 return (0); 1619 } 1620 1621 /* 1622 * sysctl helper routine for kern.root_partition 1623 */ 1624 static int 1625 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1626 { 1627 int rootpart = DISKPART(rootdev); 1628 struct sysctlnode node = *rnode; 1629 1630 node.sysctl_data = &rootpart; 1631 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1632 } 1633 1634 /* 1635 * sysctl helper function for kern.drivers 1636 */ 1637 static int 1638 sysctl_kern_drivers(SYSCTLFN_ARGS) 1639 { 1640 int error; 1641 size_t buflen; 1642 struct kinfo_drivers kd; 1643 char *start, *where; 1644 const char *dname; 1645 int i; 1646 extern struct devsw_conv *devsw_conv; 1647 extern int max_devsw_convs; 1648 1649 if (newp != NULL || namelen != 0) 1650 return (EINVAL); 1651 1652 start = where = oldp; 1653 buflen = *oldlenp; 1654 if (where == NULL) { 1655 *oldlenp = max_devsw_convs * sizeof kd; 1656 return 0; 1657 } 1658 1659 /* 1660 * An array of kinfo_drivers structures 1661 */ 1662 error = 0; 1663 sysctl_unlock(); 1664 mutex_enter(&device_lock); 1665 for (i = 0; i < max_devsw_convs; i++) { 1666 dname = devsw_conv[i].d_name; 1667 if (dname == NULL) 1668 continue; 1669 if (buflen < sizeof kd) { 1670 error = ENOMEM; 1671 break; 1672 } 1673 memset(&kd, 0, sizeof(kd)); 1674 kd.d_bmajor = devsw_conv[i].d_bmajor; 1675 kd.d_cmajor = devsw_conv[i].d_cmajor; 1676 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1677 mutex_exit(&device_lock); 1678 error = dcopyout(l, &kd, where, sizeof kd); 1679 mutex_enter(&device_lock); 1680 if (error != 0) 1681 break; 1682 buflen -= sizeof kd; 1683 where += sizeof kd; 1684 } 1685 mutex_exit(&device_lock); 1686 sysctl_relock(); 1687 *oldlenp = where - start; 1688 return error; 1689 } 1690 1691 static int 1692 sysctl_security_setidcore(SYSCTLFN_ARGS) 1693 { 1694 int newsize, error; 1695 struct sysctlnode node; 1696 1697 node = *rnode; 1698 node.sysctl_data = &newsize; 1699 newsize = *(int *)rnode->sysctl_data; 1700 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1701 if (error || newp == NULL) 1702 return error; 1703 1704 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 1705 0, NULL, NULL, NULL)) 1706 return (EPERM); 1707 1708 *(int *)rnode->sysctl_data = newsize; 1709 1710 return 0; 1711 } 1712 1713 static int 1714 sysctl_security_setidcorename(SYSCTLFN_ARGS) 1715 { 1716 int error; 1717 char *newsetidcorename; 1718 struct sysctlnode node; 1719 1720 newsetidcorename = PNBUF_GET(); 1721 node = *rnode; 1722 node.sysctl_data = newsetidcorename; 1723 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1724 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1725 if (error || newp == NULL) { 1726 goto out; 1727 } 1728 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 1729 0, NULL, NULL, NULL)) { 1730 error = EPERM; 1731 goto out; 1732 } 1733 if (strlen(newsetidcorename) == 0) { 1734 error = EINVAL; 1735 goto out; 1736 } 1737 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1738 out: 1739 PNBUF_PUT(newsetidcorename); 1740 return error; 1741 } 1742 1743 /* 1744 * sysctl helper routine for kern.cp_id node. Maps cpus to their 1745 * cpuids. 1746 */ 1747 static int 1748 sysctl_kern_cpid(SYSCTLFN_ARGS) 1749 { 1750 struct sysctlnode node = *rnode; 1751 uint64_t *cp_id = NULL; 1752 int error, n = ncpu; 1753 struct cpu_info *ci; 1754 CPU_INFO_ITERATOR cii; 1755 1756 /* 1757 * Here you may either retrieve a single cpu id or the whole 1758 * set. The size you get back when probing depends on what 1759 * you ask for. 1760 */ 1761 switch (namelen) { 1762 case 0: 1763 node.sysctl_size = n * sizeof(uint64_t); 1764 n = -2; /* ALL */ 1765 break; 1766 case 1: 1767 if (name[0] < 0 || name[0] >= n) 1768 return (ENOENT); /* ENOSUCHPROCESSOR */ 1769 node.sysctl_size = sizeof(uint64_t); 1770 n = name[0]; 1771 /* 1772 * adjust these so that sysctl_lookup() will be happy 1773 */ 1774 name++; 1775 namelen--; 1776 break; 1777 default: 1778 return (EINVAL); 1779 } 1780 1781 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 1782 if (cp_id == NULL) 1783 return (ENOMEM); 1784 node.sysctl_data = cp_id; 1785 memset(cp_id, 0, node.sysctl_size); 1786 1787 for (CPU_INFO_FOREACH(cii, ci)) { 1788 if (n <= 0) 1789 cp_id[0] = cpu_index(ci); 1790 /* 1791 * if a specific processor was requested and we just 1792 * did it, we're done here 1793 */ 1794 if (n == 0) 1795 break; 1796 /* 1797 * if doing "all", skip to next cp_id slot for next processor 1798 */ 1799 if (n == -2) 1800 cp_id++; 1801 /* 1802 * if we're doing a specific processor, we're one 1803 * processor closer 1804 */ 1805 if (n > 0) 1806 n--; 1807 } 1808 1809 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1810 kmem_free(node.sysctl_data, node.sysctl_size); 1811 return (error); 1812 } 1813 1814 /* 1815 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 1816 * calculate on the fly taking into account integer overflow and the 1817 * current wired count. 1818 */ 1819 static int 1820 sysctl_hw_usermem(SYSCTLFN_ARGS) 1821 { 1822 u_int ui; 1823 u_quad_t uq; 1824 struct sysctlnode node; 1825 1826 node = *rnode; 1827 switch (rnode->sysctl_num) { 1828 case HW_USERMEM: 1829 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1830 ui = UINT_MAX; 1831 else 1832 ui *= PAGE_SIZE; 1833 node.sysctl_data = &ui; 1834 break; 1835 case HW_USERMEM64: 1836 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1837 node.sysctl_data = &uq; 1838 break; 1839 default: 1840 return (EINVAL); 1841 } 1842 1843 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1844 } 1845 1846 /* 1847 * sysctl helper routine for kern.cnmagic node. Pulls the old value 1848 * out, encoded, and stuffs the new value in for decoding. 1849 */ 1850 static int 1851 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 1852 { 1853 char magic[CNS_LEN]; 1854 int error; 1855 struct sysctlnode node; 1856 1857 if (oldp) 1858 cn_get_magic(magic, CNS_LEN); 1859 node = *rnode; 1860 node.sysctl_data = &magic[0]; 1861 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1862 if (error || newp == NULL) 1863 return (error); 1864 1865 return (cn_set_magic(magic)); 1866 } 1867 1868 /* 1869 * ******************************************************************** 1870 * section 3: public helper routines that are used for more than one 1871 * node 1872 * ******************************************************************** 1873 */ 1874 1875 /* 1876 * sysctl helper routine for the kern.root_device node and some ports' 1877 * machdep.root_device nodes. 1878 */ 1879 int 1880 sysctl_root_device(SYSCTLFN_ARGS) 1881 { 1882 struct sysctlnode node; 1883 1884 node = *rnode; 1885 node.sysctl_data = root_device->dv_xname; 1886 node.sysctl_size = strlen(device_xname(root_device)) + 1; 1887 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1888 } 1889 1890 /* 1891 * sysctl helper routine for kern.consdev, dependent on the current 1892 * state of the console. Also used for machdep.console_device on some 1893 * ports. 1894 */ 1895 int 1896 sysctl_consdev(SYSCTLFN_ARGS) 1897 { 1898 dev_t consdev; 1899 uint32_t oconsdev; 1900 struct sysctlnode node; 1901 1902 if (cn_tab != NULL) 1903 consdev = cn_tab->cn_dev; 1904 else 1905 consdev = NODEV; 1906 node = *rnode; 1907 switch (*oldlenp) { 1908 case sizeof(consdev): 1909 node.sysctl_data = &consdev; 1910 node.sysctl_size = sizeof(consdev); 1911 break; 1912 case sizeof(oconsdev): 1913 oconsdev = (uint32_t)consdev; 1914 node.sysctl_data = &oconsdev; 1915 node.sysctl_size = sizeof(oconsdev); 1916 break; 1917 default: 1918 return EINVAL; 1919 } 1920 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1921 } 1922 1923 /* 1924 * ******************************************************************** 1925 * section 4: support for some helpers 1926 * ******************************************************************** 1927 */ 1928 1929 1930 /* 1931 * Fill in a kinfo_lwp structure for the specified lwp. 1932 */ 1933 static void 1934 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 1935 { 1936 struct proc *p = l->l_proc; 1937 struct timeval tv; 1938 1939 KASSERT(lwp_locked(l, NULL)); 1940 1941 memset(kl, 0, sizeof(*kl)); 1942 1943 kl->l_forw = 0; 1944 kl->l_back = 0; 1945 kl->l_laddr = PTRTOUINT64(l); 1946 kl->l_addr = PTRTOUINT64(l->l_addr); 1947 kl->l_stat = l->l_stat; 1948 kl->l_lid = l->l_lid; 1949 kl->l_flag = L_INMEM; 1950 kl->l_flag |= sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 1951 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 1952 1953 kl->l_swtime = l->l_swtime; 1954 kl->l_slptime = l->l_slptime; 1955 if (l->l_stat == LSONPROC) 1956 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 1957 else 1958 kl->l_schedflags = 0; 1959 kl->l_priority = lwp_eprio(l); 1960 kl->l_usrpri = l->l_priority; 1961 if (l->l_wchan) 1962 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 1963 kl->l_wchan = PTRTOUINT64(l->l_wchan); 1964 kl->l_cpuid = cpu_index(l->l_cpu); 1965 bintime2timeval(&l->l_rtime, &tv); 1966 kl->l_rtime_sec = tv.tv_sec; 1967 kl->l_rtime_usec = tv.tv_usec; 1968 kl->l_cpticks = l->l_cpticks; 1969 kl->l_pctcpu = l->l_pctcpu; 1970 kl->l_pid = p->p_pid; 1971 if (l->l_name == NULL) 1972 kl->l_name[0] = '\0'; 1973 else 1974 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 1975 } 1976
Indexes created Wed Sep 24 05:09:52 GMT 2025