init_sysctl.c revision 1.105
1/* $NetBSD: init_sysctl.c,v 1.105 2007/08/15 12:07:32 ad Exp $ */ 2 3/*- 4 * Copyright (c) 2003 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. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include <sys/cdefs.h> 40__KERNEL_RCSID(0, "$NetBSD: init_sysctl.c,v 1.105 2007/08/15 12:07:32 ad Exp $"); 41 42#include "opt_sysv.h" 43#include "opt_multiprocessor.h" 44#include "opt_posix.h" 45#include "opt_compat_netbsd32.h" 46#include "pty.h" 47#include "rnd.h" 48 49#include <sys/types.h> 50#include <sys/param.h> 51#include <sys/sysctl.h> 52#include <sys/cpu.h> 53#include <sys/errno.h> 54#include <sys/systm.h> 55#include <sys/kernel.h> 56#include <sys/unistd.h> 57#include <sys/disklabel.h> 58#include <sys/rnd.h> 59#include <sys/vnode.h> 60#include <sys/mount.h> 61#include <sys/namei.h> 62#include <sys/msgbuf.h> 63#include <dev/cons.h> 64#include <sys/socketvar.h> 65#include <sys/file.h> 66#include <sys/filedesc.h> 67#include <sys/tty.h> 68#include <sys/malloc.h> 69#include <sys/resource.h> 70#include <sys/resourcevar.h> 71#include <sys/exec.h> 72#include <sys/conf.h> 73#include <sys/device.h> 74#include <sys/stat.h> 75#include <sys/kauth.h> 76#include <sys/ktrace.h> 77 78#ifdef COMPAT_NETBSD32 79#include <compat/netbsd32/netbsd32.h> 80#endif 81 82#include <machine/cpu.h> 83 84/* XXX this should not be here */ 85int security_setidcore_dump; 86char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 87uid_t security_setidcore_owner = 0; 88gid_t security_setidcore_group = 0; 89mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 90 91static const u_int sysctl_flagmap[] = { 92 PK_ADVLOCK, P_ADVLOCK, 93 PK_EXEC, P_EXEC, 94 PK_NOCLDWAIT, P_NOCLDWAIT, 95 PK_32, P_32, 96 PK_CLDSIGIGN, P_CLDSIGIGN, 97 PK_PAXMPROTECT, P_PAXMPROTECT, 98 PK_PAXNOMPROTECT, P_PAXNOMPROTECT, 99 PK_SYSTRACE, P_SYSTRACE, 100 PK_SUGID, P_SUGID, 101 0 102}; 103 104static const u_int sysctl_sflagmap[] = { 105 PS_NOCLDSTOP, P_NOCLDSTOP, 106 PS_PPWAIT, P_PPWAIT, 107 PS_WEXIT, P_WEXIT, 108 PS_STOPFORK, P_STOPFORK, 109 PS_STOPEXEC, P_STOPEXEC, 110 PS_STOPEXIT, P_STOPEXIT, 111 0 112}; 113 114static 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 122static const u_int sysctl_lflagmap[] = { 123 PL_CONTROLT, P_CONTROLT, 124 0 125}; 126 127static const u_int sysctl_stflagmap[] = { 128 PST_PROFIL, P_PROFIL, 129 0 130 131}; 132 133static const u_int sysctl_lwpflagmap[] = { 134 LW_INMEM, P_INMEM, 135 LW_SINTR, P_SINTR, 136 LW_SYSTEM, P_SYSTEM, 137 0 138}; 139 140static const u_int sysctl_lwpprflagmap[] = { 141 LPR_DETACHED, L_DETACHED, 142 0 143}; 144 145 146/* 147 * try over estimating by 5 procs/lwps 148 */ 149#define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 150#define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 151 152static int dcopyout(struct lwp *, const void *, void *, size_t); 153 154static int 155dcopyout(l, kaddr, uaddr, len) 156 struct lwp *l; 157 const void *kaddr; 158 void *uaddr; 159 size_t len; 160{ 161 int error; 162 163 error = copyout(kaddr, uaddr, len); 164 ktrmibio(-1, UIO_READ, uaddr, len, error); 165 166 return error; 167} 168 169#ifdef DIAGNOSTIC 170static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 171#endif 172static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 173static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 174static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 175static int sysctl_kern_hostid(SYSCTLFN_PROTO); 176static int sysctl_setlen(SYSCTLFN_PROTO); 177static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 178static int sysctl_kern_file(SYSCTLFN_PROTO); 179static int sysctl_msgbuf(SYSCTLFN_PROTO); 180static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 181static int sysctl_kern_cptime(SYSCTLFN_PROTO); 182#if NPTY > 0 183static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 184#endif /* NPTY > 0 */ 185static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 186static int sysctl_kern_urnd(SYSCTLFN_PROTO); 187static int sysctl_kern_arnd(SYSCTLFN_PROTO); 188static int sysctl_kern_lwp(SYSCTLFN_PROTO); 189static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 190static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 191static int sysctl_kern_drivers(SYSCTLFN_PROTO); 192static int sysctl_kern_file2(SYSCTLFN_PROTO); 193static int sysctl_security_setidcore(SYSCTLFN_PROTO); 194static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 195static int sysctl_kern_cpid(SYSCTLFN_PROTO); 196static int sysctl_doeproc(SYSCTLFN_PROTO); 197static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 198static int sysctl_hw_usermem(SYSCTLFN_PROTO); 199static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 200static int sysctl_hw_ncpu(SYSCTLFN_PROTO); 201 202static u_int sysctl_map_flags(const u_int *, u_int); 203static void fill_kproc2(struct proc *, struct kinfo_proc2 *); 204static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 205static void fill_file(struct kinfo_file *, const struct file *, struct proc *, 206 int); 207 208/* 209 * ******************************************************************** 210 * section 1: setup routines 211 * ******************************************************************** 212 * these functions are stuffed into a link set for sysctl setup 213 * functions. they're never called or referenced from anywhere else. 214 * ******************************************************************** 215 */ 216 217/* 218 * sets up the base nodes... 219 */ 220SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 221{ 222 223 sysctl_createv(clog, 0, NULL, NULL, 224 CTLFLAG_PERMANENT, 225 CTLTYPE_NODE, "kern", 226 SYSCTL_DESCR("High kernel"), 227 NULL, 0, NULL, 0, 228 CTL_KERN, CTL_EOL); 229 sysctl_createv(clog, 0, NULL, NULL, 230 CTLFLAG_PERMANENT, 231 CTLTYPE_NODE, "vm", 232 SYSCTL_DESCR("Virtual memory"), 233 NULL, 0, NULL, 0, 234 CTL_VM, CTL_EOL); 235 sysctl_createv(clog, 0, NULL, NULL, 236 CTLFLAG_PERMANENT, 237 CTLTYPE_NODE, "vfs", 238 SYSCTL_DESCR("Filesystem"), 239 NULL, 0, NULL, 0, 240 CTL_VFS, CTL_EOL); 241 sysctl_createv(clog, 0, NULL, NULL, 242 CTLFLAG_PERMANENT, 243 CTLTYPE_NODE, "net", 244 SYSCTL_DESCR("Networking"), 245 NULL, 0, NULL, 0, 246 CTL_NET, CTL_EOL); 247 sysctl_createv(clog, 0, NULL, NULL, 248 CTLFLAG_PERMANENT, 249 CTLTYPE_NODE, "debug", 250 SYSCTL_DESCR("Debugging"), 251 NULL, 0, NULL, 0, 252 CTL_DEBUG, CTL_EOL); 253 sysctl_createv(clog, 0, NULL, NULL, 254 CTLFLAG_PERMANENT, 255 CTLTYPE_NODE, "hw", 256 SYSCTL_DESCR("Generic CPU, I/O"), 257 NULL, 0, NULL, 0, 258 CTL_HW, CTL_EOL); 259 sysctl_createv(clog, 0, NULL, NULL, 260 CTLFLAG_PERMANENT, 261 CTLTYPE_NODE, "machdep", 262 SYSCTL_DESCR("Machine dependent"), 263 NULL, 0, NULL, 0, 264 CTL_MACHDEP, CTL_EOL); 265 /* 266 * this node is inserted so that the sysctl nodes in libc can 267 * operate. 268 */ 269 sysctl_createv(clog, 0, NULL, NULL, 270 CTLFLAG_PERMANENT, 271 CTLTYPE_NODE, "user", 272 SYSCTL_DESCR("User-level"), 273 NULL, 0, NULL, 0, 274 CTL_USER, CTL_EOL); 275 sysctl_createv(clog, 0, NULL, NULL, 276 CTLFLAG_PERMANENT, 277 CTLTYPE_NODE, "ddb", 278 SYSCTL_DESCR("In-kernel debugger"), 279 NULL, 0, NULL, 0, 280 CTL_DDB, CTL_EOL); 281 sysctl_createv(clog, 0, NULL, NULL, 282 CTLFLAG_PERMANENT, 283 CTLTYPE_NODE, "proc", 284 SYSCTL_DESCR("Per-process"), 285 NULL, 0, NULL, 0, 286 CTL_PROC, CTL_EOL); 287 sysctl_createv(clog, 0, NULL, NULL, 288 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 289 CTLTYPE_NODE, "vendor", 290 SYSCTL_DESCR("Vendor specific"), 291 NULL, 0, NULL, 0, 292 CTL_VENDOR, CTL_EOL); 293 sysctl_createv(clog, 0, NULL, NULL, 294 CTLFLAG_PERMANENT, 295 CTLTYPE_NODE, "emul", 296 SYSCTL_DESCR("Emulation settings"), 297 NULL, 0, NULL, 0, 298 CTL_EMUL, CTL_EOL); 299 sysctl_createv(clog, 0, NULL, NULL, 300 CTLFLAG_PERMANENT, 301 CTLTYPE_NODE, "security", 302 SYSCTL_DESCR("Security"), 303 NULL, 0, NULL, 0, 304 CTL_SECURITY, CTL_EOL); 305} 306 307/* 308 * this setup routine is a replacement for kern_sysctl() 309 */ 310SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 311{ 312 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 313 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 314 extern int dumponpanic; /* defined in kern/subr_prf.c */ 315 const struct sysctlnode *rnode; 316 317 sysctl_createv(clog, 0, NULL, NULL, 318 CTLFLAG_PERMANENT, 319 CTLTYPE_NODE, "kern", NULL, 320 NULL, 0, NULL, 0, 321 CTL_KERN, CTL_EOL); 322 323 sysctl_createv(clog, 0, NULL, NULL, 324 CTLFLAG_PERMANENT, 325 CTLTYPE_STRING, "ostype", 326 SYSCTL_DESCR("Operating system type"), 327 NULL, 0, &ostype, 0, 328 CTL_KERN, KERN_OSTYPE, CTL_EOL); 329 sysctl_createv(clog, 0, NULL, NULL, 330 CTLFLAG_PERMANENT, 331 CTLTYPE_STRING, "osrelease", 332 SYSCTL_DESCR("Operating system release"), 333 NULL, 0, &osrelease, 0, 334 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 335 sysctl_createv(clog, 0, NULL, NULL, 336 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 337 CTLTYPE_INT, "osrevision", 338 SYSCTL_DESCR("Operating system revision"), 339 NULL, __NetBSD_Version__, NULL, 0, 340 CTL_KERN, KERN_OSREV, CTL_EOL); 341 sysctl_createv(clog, 0, NULL, NULL, 342 CTLFLAG_PERMANENT, 343 CTLTYPE_STRING, "version", 344 SYSCTL_DESCR("Kernel version"), 345 NULL, 0, &version, 0, 346 CTL_KERN, KERN_VERSION, CTL_EOL); 347 sysctl_createv(clog, 0, NULL, NULL, 348 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 349 CTLTYPE_INT, "maxvnodes", 350 SYSCTL_DESCR("Maximum number of vnodes"), 351 sysctl_kern_maxvnodes, 0, NULL, 0, 352 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 353 sysctl_createv(clog, 0, NULL, NULL, 354 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 355 CTLTYPE_INT, "maxproc", 356 SYSCTL_DESCR("Maximum number of simultaneous processes"), 357 sysctl_kern_maxproc, 0, NULL, 0, 358 CTL_KERN, KERN_MAXPROC, CTL_EOL); 359 sysctl_createv(clog, 0, NULL, NULL, 360 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 361 CTLTYPE_INT, "maxfiles", 362 SYSCTL_DESCR("Maximum number of open files"), 363 NULL, 0, &maxfiles, 0, 364 CTL_KERN, KERN_MAXFILES, CTL_EOL); 365 sysctl_createv(clog, 0, NULL, NULL, 366 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 367 CTLTYPE_INT, "argmax", 368 SYSCTL_DESCR("Maximum number of bytes of arguments to " 369 "execve(2)"), 370 NULL, ARG_MAX, NULL, 0, 371 CTL_KERN, KERN_ARGMAX, CTL_EOL); 372 sysctl_createv(clog, 0, NULL, NULL, 373 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 374 CTLTYPE_STRING, "hostname", 375 SYSCTL_DESCR("System hostname"), 376 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 377 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 378 sysctl_createv(clog, 0, NULL, NULL, 379 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 380 CTLTYPE_INT, "hostid", 381 SYSCTL_DESCR("System host ID number"), 382 sysctl_kern_hostid, 0, NULL, 0, 383 CTL_KERN, KERN_HOSTID, CTL_EOL); 384 sysctl_createv(clog, 0, NULL, NULL, 385 CTLFLAG_PERMANENT, 386 CTLTYPE_STRUCT, "clockrate", 387 SYSCTL_DESCR("Kernel clock rates"), 388 sysctl_kern_clockrate, 0, NULL, 389 sizeof(struct clockinfo), 390 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 391 sysctl_createv(clog, 0, NULL, NULL, 392 CTLFLAG_PERMANENT, 393 CTLTYPE_INT, "hardclock_ticks", 394 SYSCTL_DESCR("Number of hardclock ticks"), 395 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 396 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 397 sysctl_createv(clog, 0, NULL, NULL, 398 CTLFLAG_PERMANENT, 399 CTLTYPE_STRUCT, "vnode", 400 SYSCTL_DESCR("System vnode table"), 401 sysctl_kern_vnode, 0, NULL, 0, 402 CTL_KERN, KERN_VNODE, CTL_EOL); 403 sysctl_createv(clog, 0, NULL, NULL, 404 CTLFLAG_PERMANENT, 405 CTLTYPE_STRUCT, "file", 406 SYSCTL_DESCR("System open file table"), 407 sysctl_kern_file, 0, NULL, 0, 408 CTL_KERN, KERN_FILE, CTL_EOL); 409#ifndef GPROF 410 sysctl_createv(clog, 0, NULL, NULL, 411 CTLFLAG_PERMANENT, 412 CTLTYPE_NODE, "profiling", 413 SYSCTL_DESCR("Profiling information (not available)"), 414 sysctl_notavail, 0, NULL, 0, 415 CTL_KERN, KERN_PROF, CTL_EOL); 416#endif 417 sysctl_createv(clog, 0, NULL, NULL, 418 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 419 CTLTYPE_INT, "posix1version", 420 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 421 "with which the operating system attempts " 422 "to comply"), 423 NULL, _POSIX_VERSION, NULL, 0, 424 CTL_KERN, KERN_POSIX1, CTL_EOL); 425 sysctl_createv(clog, 0, NULL, NULL, 426 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 427 CTLTYPE_INT, "ngroups", 428 SYSCTL_DESCR("Maximum number of supplemental groups"), 429 NULL, NGROUPS_MAX, NULL, 0, 430 CTL_KERN, KERN_NGROUPS, CTL_EOL); 431 sysctl_createv(clog, 0, NULL, NULL, 432 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 433 CTLTYPE_INT, "job_control", 434 SYSCTL_DESCR("Whether job control is available"), 435 NULL, 1, NULL, 0, 436 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 437 sysctl_createv(clog, 0, NULL, NULL, 438 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 439 CTLTYPE_INT, "saved_ids", 440 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 441 "available"), NULL, 442#ifdef _POSIX_SAVED_IDS 443 1, 444#else /* _POSIX_SAVED_IDS */ 445 0, 446#endif /* _POSIX_SAVED_IDS */ 447 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 448 sysctl_createv(clog, 0, NULL, NULL, 449 CTLFLAG_PERMANENT, 450 CTLTYPE_STRUCT, "boottime", 451 SYSCTL_DESCR("System boot time"), 452 NULL, 0, &boottime, sizeof(boottime), 453 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 454 sysctl_createv(clog, 0, NULL, NULL, 455 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 456 CTLTYPE_STRING, "domainname", 457 SYSCTL_DESCR("YP domain name"), 458 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 459 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 460 sysctl_createv(clog, 0, NULL, NULL, 461 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 462 CTLTYPE_INT, "maxpartitions", 463 SYSCTL_DESCR("Maximum number of partitions allowed per " 464 "disk"), 465 NULL, MAXPARTITIONS, NULL, 0, 466 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 467 sysctl_createv(clog, 0, NULL, NULL, 468 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 469 CTLTYPE_INT, "rawpartition", 470 SYSCTL_DESCR("Raw partition of a disk"), 471 NULL, RAW_PART, NULL, 0, 472 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 473 sysctl_createv(clog, 0, NULL, NULL, 474 CTLFLAG_PERMANENT, 475 CTLTYPE_STRUCT, "timex", NULL, 476 sysctl_notavail, 0, NULL, 0, 477 CTL_KERN, KERN_TIMEX, CTL_EOL); 478 sysctl_createv(clog, 0, NULL, NULL, 479 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 480 CTLTYPE_INT, "rtc_offset", 481 SYSCTL_DESCR("Offset of real time clock from UTC in " 482 "minutes"), 483 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 484 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 485 sysctl_createv(clog, 0, NULL, NULL, 486 CTLFLAG_PERMANENT, 487 CTLTYPE_STRING, "root_device", 488 SYSCTL_DESCR("Name of the root device"), 489 sysctl_root_device, 0, NULL, 0, 490 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 491 sysctl_createv(clog, 0, NULL, NULL, 492 CTLFLAG_PERMANENT, 493 CTLTYPE_INT, "msgbufsize", 494 SYSCTL_DESCR("Size of the kernel message buffer"), 495 sysctl_msgbuf, 0, NULL, 0, 496 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 497 sysctl_createv(clog, 0, NULL, NULL, 498 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 499 CTLTYPE_INT, "fsync", 500 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 501 "Synchronization Option is available on " 502 "this system"), 503 NULL, 1, NULL, 0, 504 CTL_KERN, KERN_FSYNC, CTL_EOL); 505 sysctl_createv(clog, 0, NULL, NULL, 506 CTLFLAG_PERMANENT, 507 CTLTYPE_NODE, "ipc", 508 SYSCTL_DESCR("SysV IPC options"), 509 NULL, 0, NULL, 0, 510 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 511 sysctl_createv(clog, 0, NULL, NULL, 512 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 513 CTLTYPE_INT, "sysvmsg", 514 SYSCTL_DESCR("System V style message support available"), 515 NULL, 516#ifdef SYSVMSG 517 1, 518#else /* SYSVMSG */ 519 0, 520#endif /* SYSVMSG */ 521 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 522 sysctl_createv(clog, 0, NULL, NULL, 523 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 524 CTLTYPE_INT, "sysvsem", 525 SYSCTL_DESCR("System V style semaphore support " 526 "available"), NULL, 527#ifdef SYSVSEM 528 1, 529#else /* SYSVSEM */ 530 0, 531#endif /* SYSVSEM */ 532 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 533 sysctl_createv(clog, 0, NULL, NULL, 534 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 535 CTLTYPE_INT, "sysvshm", 536 SYSCTL_DESCR("System V style shared memory support " 537 "available"), NULL, 538#ifdef SYSVSHM 539 1, 540#else /* SYSVSHM */ 541 0, 542#endif /* SYSVSHM */ 543 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 544 sysctl_createv(clog, 0, NULL, NULL, 545 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 546 CTLTYPE_INT, "synchronized_io", 547 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 548 "I/O Option is available on this system"), 549 NULL, 1, NULL, 0, 550 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 551 sysctl_createv(clog, 0, NULL, NULL, 552 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 553 CTLTYPE_INT, "iov_max", 554 SYSCTL_DESCR("Maximum number of iovec structures per " 555 "process"), 556 NULL, IOV_MAX, NULL, 0, 557 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 558 sysctl_createv(clog, 0, NULL, NULL, 559 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 560 CTLTYPE_INT, "mapped_files", 561 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 562 "Files Option is available on this system"), 563 NULL, 1, NULL, 0, 564 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 565 sysctl_createv(clog, 0, NULL, NULL, 566 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 567 CTLTYPE_INT, "memlock", 568 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 569 "Locking Option is available on this " 570 "system"), 571 NULL, 1, NULL, 0, 572 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 573 sysctl_createv(clog, 0, NULL, NULL, 574 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 575 CTLTYPE_INT, "memlock_range", 576 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 577 "Locking Option is available on this " 578 "system"), 579 NULL, 1, NULL, 0, 580 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 581 sysctl_createv(clog, 0, NULL, NULL, 582 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 583 CTLTYPE_INT, "memory_protection", 584 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 585 "Protection Option is available on this " 586 "system"), 587 NULL, 1, NULL, 0, 588 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 589 sysctl_createv(clog, 0, NULL, NULL, 590 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 591 CTLTYPE_INT, "login_name_max", 592 SYSCTL_DESCR("Maximum login name length"), 593 NULL, LOGIN_NAME_MAX, NULL, 0, 594 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 595 sysctl_createv(clog, 0, NULL, NULL, 596 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 597 CTLTYPE_STRING, "defcorename", 598 SYSCTL_DESCR("Default core file name"), 599 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 600 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 601 sysctl_createv(clog, 0, NULL, NULL, 602 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 603 CTLTYPE_INT, "logsigexit", 604 SYSCTL_DESCR("Log process exit when caused by signals"), 605 NULL, 0, &kern_logsigexit, 0, 606 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 607 sysctl_createv(clog, 0, NULL, NULL, 608 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 609 CTLTYPE_INT, "fscale", 610 SYSCTL_DESCR("Kernel fixed-point scale factor"), 611 NULL, FSCALE, NULL, 0, 612 CTL_KERN, KERN_FSCALE, CTL_EOL); 613 sysctl_createv(clog, 0, NULL, NULL, 614 CTLFLAG_PERMANENT, 615 CTLTYPE_INT, "ccpu", 616 SYSCTL_DESCR("Scheduler exponential decay value"), 617 NULL, 0, &ccpu, 0, 618 CTL_KERN, KERN_CCPU, CTL_EOL); 619 sysctl_createv(clog, 0, NULL, NULL, 620 CTLFLAG_PERMANENT, 621 CTLTYPE_STRUCT, "cp_time", 622 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 623 sysctl_kern_cptime, 0, NULL, 0, 624 CTL_KERN, KERN_CP_TIME, CTL_EOL); 625 sysctl_createv(clog, 0, NULL, NULL, 626 CTLFLAG_PERMANENT, 627 CTLTYPE_INT, "msgbuf", 628 SYSCTL_DESCR("Kernel message buffer"), 629 sysctl_msgbuf, 0, NULL, 0, 630 CTL_KERN, KERN_MSGBUF, CTL_EOL); 631 sysctl_createv(clog, 0, NULL, NULL, 632 CTLFLAG_PERMANENT, 633 CTLTYPE_STRUCT, "consdev", 634 SYSCTL_DESCR("Console device"), 635 sysctl_consdev, 0, NULL, sizeof(dev_t), 636 CTL_KERN, KERN_CONSDEV, CTL_EOL); 637#if NPTY > 0 638 sysctl_createv(clog, 0, NULL, NULL, 639 CTLFLAG_PERMANENT, 640 CTLTYPE_INT, "maxptys", 641 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 642 sysctl_kern_maxptys, 0, NULL, 0, 643 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 644#endif /* NPTY > 0 */ 645 sysctl_createv(clog, 0, NULL, NULL, 646 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 647 CTLTYPE_INT, "maxphys", 648 SYSCTL_DESCR("Maximum raw I/O transfer size"), 649 NULL, MAXPHYS, NULL, 0, 650 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 651 sysctl_createv(clog, 0, NULL, NULL, 652 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 653 CTLTYPE_INT, "sbmax", 654 SYSCTL_DESCR("Maximum socket buffer size"), 655 sysctl_kern_sbmax, 0, NULL, 0, 656 CTL_KERN, KERN_SBMAX, CTL_EOL); 657 sysctl_createv(clog, 0, NULL, NULL, 658 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 659 CTLTYPE_INT, "monotonic_clock", 660 SYSCTL_DESCR("Implementation version of the POSIX " 661 "1003.1b Monotonic Clock Option"), 662 /* XXX _POSIX_VERSION */ 663 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 664 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 665 sysctl_createv(clog, 0, NULL, NULL, 666 CTLFLAG_PERMANENT, 667 CTLTYPE_INT, "urandom", 668 SYSCTL_DESCR("Random integer value"), 669 sysctl_kern_urnd, 0, NULL, 0, 670 CTL_KERN, KERN_URND, CTL_EOL); 671 sysctl_createv(clog, 0, NULL, NULL, 672 CTLFLAG_PERMANENT, 673 CTLTYPE_INT, "arandom", 674 SYSCTL_DESCR("n bytes of random data"), 675 sysctl_kern_arnd, 0, NULL, 0, 676 CTL_KERN, KERN_ARND, CTL_EOL); 677 sysctl_createv(clog, 0, NULL, NULL, 678 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 679 CTLTYPE_INT, "labelsector", 680 SYSCTL_DESCR("Sector number containing the disklabel"), 681 NULL, LABELSECTOR, NULL, 0, 682 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 683 sysctl_createv(clog, 0, NULL, NULL, 684 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 685 CTLTYPE_INT, "labeloffset", 686 SYSCTL_DESCR("Offset of the disklabel within the " 687 "sector"), 688 NULL, LABELOFFSET, NULL, 0, 689 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 690 sysctl_createv(clog, 0, NULL, NULL, 691 CTLFLAG_PERMANENT, 692 CTLTYPE_NODE, "lwp", 693 SYSCTL_DESCR("System-wide LWP information"), 694 sysctl_kern_lwp, 0, NULL, 0, 695 CTL_KERN, KERN_LWP, CTL_EOL); 696 sysctl_createv(clog, 0, NULL, NULL, 697 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 698 CTLTYPE_INT, "forkfsleep", 699 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 700 "to process limits"), 701 sysctl_kern_forkfsleep, 0, NULL, 0, 702 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 703 sysctl_createv(clog, 0, NULL, NULL, 704 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 705 CTLTYPE_INT, "posix_threads", 706 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 707 "Threads option to which the system " 708 "attempts to conform"), 709 /* XXX _POSIX_VERSION */ 710 NULL, _POSIX_THREADS, NULL, 0, 711 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 712 sysctl_createv(clog, 0, NULL, NULL, 713 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 714 CTLTYPE_INT, "posix_semaphores", 715 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 716 "Semaphores option to which the system " 717 "attempts to conform"), NULL, 718#ifdef P1003_1B_SEMAPHORE 719 200112, 720#else /* P1003_1B_SEMAPHORE */ 721 0, 722#endif /* P1003_1B_SEMAPHORE */ 723 NULL, 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 724 sysctl_createv(clog, 0, NULL, NULL, 725 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 726 CTLTYPE_INT, "posix_barriers", 727 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 728 "Barriers option to which the system " 729 "attempts to conform"), 730 /* XXX _POSIX_VERSION */ 731 NULL, _POSIX_BARRIERS, NULL, 0, 732 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 733 sysctl_createv(clog, 0, NULL, NULL, 734 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 735 CTLTYPE_INT, "posix_timers", 736 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 737 "Timers option to which the system " 738 "attempts to conform"), 739 /* XXX _POSIX_VERSION */ 740 NULL, _POSIX_TIMERS, NULL, 0, 741 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 742 sysctl_createv(clog, 0, NULL, NULL, 743 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 744 CTLTYPE_INT, "posix_spin_locks", 745 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 746 "Locks option to which the system attempts " 747 "to conform"), 748 /* XXX _POSIX_VERSION */ 749 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 750 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 751 sysctl_createv(clog, 0, NULL, NULL, 752 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 753 CTLTYPE_INT, "posix_reader_writer_locks", 754 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 755 "Read-Write Locks option to which the " 756 "system attempts to conform"), 757 /* XXX _POSIX_VERSION */ 758 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 759 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 760 sysctl_createv(clog, 0, NULL, NULL, 761 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 762 CTLTYPE_INT, "dump_on_panic", 763 SYSCTL_DESCR("Perform a crash dump on system panic"), 764 NULL, 0, &dumponpanic, 0, 765 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 766#ifdef DIAGNOSTIC 767 sysctl_createv(clog, 0, NULL, NULL, 768 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 769 CTLTYPE_INT, "panic_now", 770 SYSCTL_DESCR("Trigger a panic"), 771 sysctl_kern_trigger_panic, 0, NULL, 0, 772 CTL_KERN, CTL_CREATE, CTL_EOL); 773#endif 774 sysctl_createv(clog, 0, NULL, NULL, 775 CTLFLAG_PERMANENT, 776 CTLTYPE_INT, "root_partition", 777 SYSCTL_DESCR("Root partition on the root device"), 778 sysctl_kern_root_partition, 0, NULL, 0, 779 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 780 sysctl_createv(clog, 0, NULL, NULL, 781 CTLFLAG_PERMANENT, 782 CTLTYPE_STRUCT, "drivers", 783 SYSCTL_DESCR("List of all drivers with block and " 784 "character device numbers"), 785 sysctl_kern_drivers, 0, NULL, 0, 786 CTL_KERN, KERN_DRIVERS, CTL_EOL); 787 sysctl_createv(clog, 0, NULL, NULL, 788 CTLFLAG_PERMANENT, 789 CTLTYPE_STRUCT, "file2", 790 SYSCTL_DESCR("System open file table"), 791 sysctl_kern_file2, 0, NULL, 0, 792 CTL_KERN, KERN_FILE2, CTL_EOL); 793 sysctl_createv(clog, 0, NULL, NULL, 794 CTLFLAG_PERMANENT, 795 CTLTYPE_STRUCT, "cp_id", 796 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 797 sysctl_kern_cpid, 0, NULL, 0, 798 CTL_KERN, KERN_CP_ID, CTL_EOL); 799 sysctl_createv(clog, 0, NULL, &rnode, 800 CTLFLAG_PERMANENT, 801 CTLTYPE_NODE, "coredump", 802 SYSCTL_DESCR("Coredump settings."), 803 NULL, 0, NULL, 0, 804 CTL_KERN, CTL_CREATE, CTL_EOL); 805 sysctl_createv(clog, 0, &rnode, &rnode, 806 CTLFLAG_PERMANENT, 807 CTLTYPE_NODE, "setid", 808 SYSCTL_DESCR("Set-id processes' coredump settings."), 809 NULL, 0, NULL, 0, 810 CTL_CREATE, CTL_EOL); 811 sysctl_createv(clog, 0, &rnode, NULL, 812 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 813 CTLTYPE_INT, "dump", 814 SYSCTL_DESCR("Allow set-id processes to dump core."), 815 sysctl_security_setidcore, 0, &security_setidcore_dump, 816 sizeof(security_setidcore_dump), 817 CTL_CREATE, CTL_EOL); 818 sysctl_createv(clog, 0, &rnode, NULL, 819 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 820 CTLTYPE_STRING, "path", 821 SYSCTL_DESCR("Path pattern for set-id coredumps."), 822 sysctl_security_setidcorename, 0, 823 &security_setidcore_path, 824 sizeof(security_setidcore_path), 825 CTL_CREATE, CTL_EOL); 826 sysctl_createv(clog, 0, &rnode, NULL, 827 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 828 CTLTYPE_INT, "owner", 829 SYSCTL_DESCR("Owner id for set-id processes' cores."), 830 sysctl_security_setidcore, 0, &security_setidcore_owner, 831 0, 832 CTL_CREATE, CTL_EOL); 833 sysctl_createv(clog, 0, &rnode, NULL, 834 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 835 CTLTYPE_INT, "group", 836 SYSCTL_DESCR("Group id for set-id processes' cores."), 837 sysctl_security_setidcore, 0, &security_setidcore_group, 838 0, 839 CTL_CREATE, CTL_EOL); 840 sysctl_createv(clog, 0, &rnode, NULL, 841 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 842 CTLTYPE_INT, "mode", 843 SYSCTL_DESCR("Mode for set-id processes' cores."), 844 sysctl_security_setidcore, 0, &security_setidcore_mode, 845 0, 846 CTL_CREATE, CTL_EOL); 847} 848 849SYSCTL_SETUP(sysctl_kern_proc_setup, 850 "sysctl kern.proc/proc2/proc_args subtree setup") 851{ 852 853 sysctl_createv(clog, 0, NULL, NULL, 854 CTLFLAG_PERMANENT, 855 CTLTYPE_NODE, "kern", NULL, 856 NULL, 0, NULL, 0, 857 CTL_KERN, CTL_EOL); 858 859 sysctl_createv(clog, 0, NULL, NULL, 860 CTLFLAG_PERMANENT, 861 CTLTYPE_NODE, "proc", 862 SYSCTL_DESCR("System-wide process information"), 863 sysctl_doeproc, 0, NULL, 0, 864 CTL_KERN, KERN_PROC, CTL_EOL); 865 sysctl_createv(clog, 0, NULL, NULL, 866 CTLFLAG_PERMANENT, 867 CTLTYPE_NODE, "proc2", 868 SYSCTL_DESCR("Machine-independent process information"), 869 sysctl_doeproc, 0, NULL, 0, 870 CTL_KERN, KERN_PROC2, CTL_EOL); 871 sysctl_createv(clog, 0, NULL, NULL, 872 CTLFLAG_PERMANENT, 873 CTLTYPE_NODE, "proc_args", 874 SYSCTL_DESCR("Process argument information"), 875 sysctl_kern_proc_args, 0, NULL, 0, 876 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 877 878 /* 879 "nodes" under these: 880 881 KERN_PROC_ALL 882 KERN_PROC_PID pid 883 KERN_PROC_PGRP pgrp 884 KERN_PROC_SESSION sess 885 KERN_PROC_TTY tty 886 KERN_PROC_UID uid 887 KERN_PROC_RUID uid 888 KERN_PROC_GID gid 889 KERN_PROC_RGID gid 890 891 all in all, probably not worth the effort... 892 */ 893} 894 895SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 896{ 897 u_int u; 898 u_quad_t q; 899 900 sysctl_createv(clog, 0, NULL, NULL, 901 CTLFLAG_PERMANENT, 902 CTLTYPE_NODE, "hw", NULL, 903 NULL, 0, NULL, 0, 904 CTL_HW, CTL_EOL); 905 906 sysctl_createv(clog, 0, NULL, NULL, 907 CTLFLAG_PERMANENT, 908 CTLTYPE_STRING, "machine", 909 SYSCTL_DESCR("Machine class"), 910 NULL, 0, machine, 0, 911 CTL_HW, HW_MACHINE, CTL_EOL); 912 sysctl_createv(clog, 0, NULL, NULL, 913 CTLFLAG_PERMANENT, 914 CTLTYPE_STRING, "model", 915 SYSCTL_DESCR("Machine model"), 916 NULL, 0, cpu_model, 0, 917 CTL_HW, HW_MODEL, CTL_EOL); 918 sysctl_createv(clog, 0, NULL, NULL, 919 CTLFLAG_PERMANENT, 920 CTLTYPE_INT, "ncpu", 921 SYSCTL_DESCR("Number of active CPUs"), 922 sysctl_hw_ncpu, 0, NULL, 0, 923 CTL_HW, HW_NCPU, CTL_EOL); 924 sysctl_createv(clog, 0, NULL, NULL, 925 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 926 CTLTYPE_INT, "byteorder", 927 SYSCTL_DESCR("System byte order"), 928 NULL, BYTE_ORDER, NULL, 0, 929 CTL_HW, HW_BYTEORDER, CTL_EOL); 930 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 931 UINT_MAX : physmem * PAGE_SIZE; 932 sysctl_createv(clog, 0, NULL, NULL, 933 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 934 CTLTYPE_INT, "physmem", 935 SYSCTL_DESCR("Bytes of physical memory"), 936 NULL, u, NULL, 0, 937 CTL_HW, HW_PHYSMEM, CTL_EOL); 938 sysctl_createv(clog, 0, NULL, NULL, 939 CTLFLAG_PERMANENT, 940 CTLTYPE_INT, "usermem", 941 SYSCTL_DESCR("Bytes of non-kernel memory"), 942 sysctl_hw_usermem, 0, NULL, 0, 943 CTL_HW, HW_USERMEM, CTL_EOL); 944 sysctl_createv(clog, 0, NULL, NULL, 945 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 946 CTLTYPE_INT, "pagesize", 947 SYSCTL_DESCR("Software page size"), 948 NULL, PAGE_SIZE, NULL, 0, 949 CTL_HW, HW_PAGESIZE, CTL_EOL); 950 sysctl_createv(clog, 0, NULL, NULL, 951 CTLFLAG_PERMANENT, 952 CTLTYPE_STRING, "machine_arch", 953 SYSCTL_DESCR("Machine CPU class"), 954 NULL, 0, machine_arch, 0, 955 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 956 sysctl_createv(clog, 0, NULL, NULL, 957 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 958 CTLTYPE_INT, "alignbytes", 959 SYSCTL_DESCR("Alignment constraint for all possible " 960 "data types"), 961 NULL, ALIGNBYTES, NULL, 0, 962 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 963 sysctl_createv(clog, 0, NULL, NULL, 964 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 965 CTLTYPE_STRING, "cnmagic", 966 SYSCTL_DESCR("Console magic key sequence"), 967 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 968 CTL_HW, HW_CNMAGIC, CTL_EOL); 969 q = (u_quad_t)physmem * PAGE_SIZE; 970 sysctl_createv(clog, 0, NULL, NULL, 971 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 972 CTLTYPE_QUAD, "physmem64", 973 SYSCTL_DESCR("Bytes of physical memory"), 974 NULL, q, NULL, 0, 975 CTL_HW, HW_PHYSMEM64, CTL_EOL); 976 sysctl_createv(clog, 0, NULL, NULL, 977 CTLFLAG_PERMANENT, 978 CTLTYPE_QUAD, "usermem64", 979 SYSCTL_DESCR("Bytes of non-kernel memory"), 980 sysctl_hw_usermem, 0, NULL, 0, 981 CTL_HW, HW_USERMEM64, CTL_EOL); 982} 983 984#ifdef DEBUG 985/* 986 * Debugging related system variables. 987 */ 988struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 989struct ctldebug debug5, debug6, debug7, debug8, debug9; 990struct ctldebug debug10, debug11, debug12, debug13, debug14; 991struct ctldebug debug15, debug16, debug17, debug18, debug19; 992static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 993 &debug0, &debug1, &debug2, &debug3, &debug4, 994 &debug5, &debug6, &debug7, &debug8, &debug9, 995 &debug10, &debug11, &debug12, &debug13, &debug14, 996 &debug15, &debug16, &debug17, &debug18, &debug19, 997}; 998 999/* 1000 * this setup routine is a replacement for debug_sysctl() 1001 * 1002 * note that it creates several nodes per defined debug variable 1003 */ 1004SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 1005{ 1006 struct ctldebug *cdp; 1007 char nodename[20]; 1008 int i; 1009 1010 /* 1011 * two ways here: 1012 * 1013 * the "old" way (debug.name -> value) which was emulated by 1014 * the sysctl(8) binary 1015 * 1016 * the new way, which the sysctl(8) binary was actually using 1017 1018 node debug 1019 node debug.0 1020 string debug.0.name 1021 int debug.0.value 1022 int debug.name 1023 1024 */ 1025 1026 sysctl_createv(clog, 0, NULL, NULL, 1027 CTLFLAG_PERMANENT, 1028 CTLTYPE_NODE, "debug", NULL, 1029 NULL, 0, NULL, 0, 1030 CTL_DEBUG, CTL_EOL); 1031 1032 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 1033 cdp = debugvars[i]; 1034 if (cdp->debugname == NULL || cdp->debugvar == NULL) 1035 continue; 1036 1037 snprintf(nodename, sizeof(nodename), "debug%d", i); 1038 sysctl_createv(clog, 0, NULL, NULL, 1039 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1040 CTLTYPE_NODE, nodename, NULL, 1041 NULL, 0, NULL, 0, 1042 CTL_DEBUG, i, CTL_EOL); 1043 sysctl_createv(clog, 0, NULL, NULL, 1044 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1045 CTLTYPE_STRING, "name", NULL, 1046 /*XXXUNCONST*/ 1047 NULL, 0, __UNCONST(cdp->debugname), 0, 1048 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 1049 sysctl_createv(clog, 0, NULL, NULL, 1050 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1051 CTLTYPE_INT, "value", NULL, 1052 NULL, 0, cdp->debugvar, 0, 1053 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 1054 sysctl_createv(clog, 0, NULL, NULL, 1055 CTLFLAG_PERMANENT, 1056 CTLTYPE_INT, cdp->debugname, NULL, 1057 NULL, 0, cdp->debugvar, 0, 1058 CTL_DEBUG, CTL_CREATE, CTL_EOL); 1059 } 1060} 1061#endif /* DEBUG */ 1062 1063/* 1064 * ******************************************************************** 1065 * section 2: private node-specific helper routines. 1066 * ******************************************************************** 1067 */ 1068 1069#ifdef DIAGNOSTIC 1070static int 1071sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 1072{ 1073 int newtrig, error; 1074 struct sysctlnode node; 1075 1076 newtrig = 0; 1077 node = *rnode; 1078 node.sysctl_data = &newtrig; 1079 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1080 if (error || newp == NULL) 1081 return (error); 1082 1083 if (newtrig != 0) 1084 panic("Panic triggered"); 1085 1086 return (error); 1087} 1088#endif 1089 1090/* 1091 * sysctl helper routine for kern.maxvnodes. drain vnodes if 1092 * new value is lower than desiredvnodes and then calls reinit 1093 * routines that needs to adjust to the new value. 1094 */ 1095static int 1096sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 1097{ 1098 int error, new_vnodes, old_vnodes; 1099 struct sysctlnode node; 1100 1101 new_vnodes = desiredvnodes; 1102 node = *rnode; 1103 node.sysctl_data = &new_vnodes; 1104 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1105 if (error || newp == NULL) 1106 return (error); 1107 1108 old_vnodes = desiredvnodes; 1109 desiredvnodes = new_vnodes; 1110 if (new_vnodes < old_vnodes) { 1111 error = vfs_drainvnodes(new_vnodes, l); 1112 if (error) { 1113 desiredvnodes = old_vnodes; 1114 return (error); 1115 } 1116 } 1117 vfs_reinit(); 1118 nchreinit(); 1119 1120 return (0); 1121} 1122 1123/* 1124 * sysctl helper routine for rtc_offset - set time after changes 1125 */ 1126static int 1127sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1128{ 1129 struct timespec ts, delta; 1130 int error, new_rtc_offset; 1131 struct sysctlnode node; 1132 1133 new_rtc_offset = rtc_offset; 1134 node = *rnode; 1135 node.sysctl_data = &new_rtc_offset; 1136 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1137 if (error || newp == NULL) 1138 return (error); 1139 1140 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1141 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1142 (void *)(u_long)new_rtc_offset, NULL, NULL)) 1143 return (EPERM); 1144 if (rtc_offset == new_rtc_offset) 1145 return (0); 1146 1147 /* if we change the offset, adjust the time */ 1148 nanotime(&ts); 1149 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1150 delta.tv_nsec = 0; 1151 timespecadd(&ts, &delta, &ts); 1152 rtc_offset = new_rtc_offset; 1153 settime(l->l_proc, &ts); 1154 1155 return (0); 1156} 1157 1158/* 1159 * sysctl helper routine for kern.maxproc. ensures that the new 1160 * values are not too low or too high. 1161 */ 1162static int 1163sysctl_kern_maxproc(SYSCTLFN_ARGS) 1164{ 1165 int error, nmaxproc; 1166 struct sysctlnode node; 1167 1168 nmaxproc = maxproc; 1169 node = *rnode; 1170 node.sysctl_data = &nmaxproc; 1171 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1172 if (error || newp == NULL) 1173 return (error); 1174 1175 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1176 return (EINVAL); 1177#ifdef __HAVE_CPU_MAXPROC 1178 if (nmaxproc > cpu_maxproc()) 1179 return (EINVAL); 1180#endif 1181 maxproc = nmaxproc; 1182 1183 return (0); 1184} 1185 1186/* 1187 * sysctl helper function for kern.hostid. the hostid is a long, but 1188 * we export it as an int, so we need to give it a little help. 1189 */ 1190static int 1191sysctl_kern_hostid(SYSCTLFN_ARGS) 1192{ 1193 int error, inthostid; 1194 struct sysctlnode node; 1195 1196 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1197 node = *rnode; 1198 node.sysctl_data = &inthostid; 1199 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1200 if (error || newp == NULL) 1201 return (error); 1202 1203 hostid = (unsigned)inthostid; 1204 1205 return (0); 1206} 1207 1208/* 1209 * sysctl helper function for kern.hostname and kern.domainnname. 1210 * resets the relevant recorded length when the underlying name is 1211 * changed. 1212 */ 1213static int 1214sysctl_setlen(SYSCTLFN_ARGS) 1215{ 1216 int error; 1217 1218 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1219 if (error || newp == NULL) 1220 return (error); 1221 1222 switch (rnode->sysctl_num) { 1223 case KERN_HOSTNAME: 1224 hostnamelen = strlen((const char*)rnode->sysctl_data); 1225 break; 1226 case KERN_DOMAINNAME: 1227 domainnamelen = strlen((const char*)rnode->sysctl_data); 1228 break; 1229 } 1230 1231 return (0); 1232} 1233 1234/* 1235 * sysctl helper routine for kern.clockrate. assembles a struct on 1236 * the fly to be returned to the caller. 1237 */ 1238static int 1239sysctl_kern_clockrate(SYSCTLFN_ARGS) 1240{ 1241 struct clockinfo clkinfo; 1242 struct sysctlnode node; 1243 1244 clkinfo.tick = tick; 1245 clkinfo.tickadj = tickadj; 1246 clkinfo.hz = hz; 1247 clkinfo.profhz = profhz; 1248 clkinfo.stathz = stathz ? stathz : hz; 1249 1250 node = *rnode; 1251 node.sysctl_data = &clkinfo; 1252 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1253} 1254 1255 1256/* 1257 * sysctl helper routine for kern.file pseudo-subtree. 1258 */ 1259static int 1260sysctl_kern_file(SYSCTLFN_ARGS) 1261{ 1262 int error; 1263 size_t buflen; 1264 struct file *fp; 1265 char *start, *where; 1266 1267 start = where = oldp; 1268 buflen = *oldlenp; 1269 if (where == NULL) { 1270 /* 1271 * overestimate by 10 files 1272 */ 1273 *oldlenp = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 1274 return (0); 1275 } 1276 1277 /* 1278 * first dcopyout filehead 1279 */ 1280 if (buflen < sizeof(filehead)) { 1281 *oldlenp = 0; 1282 return (0); 1283 } 1284 error = dcopyout(l, &filehead, where, sizeof(filehead)); 1285 if (error) 1286 return (error); 1287 buflen -= sizeof(filehead); 1288 where += sizeof(filehead); 1289 1290 /* 1291 * followed by an array of file structures 1292 */ 1293 LIST_FOREACH(fp, &filehead, f_list) { 1294 if (kauth_authorize_generic(l->l_cred, 1295 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) 1296 continue; 1297 if (buflen < sizeof(struct file)) { 1298 *oldlenp = where - start; 1299 return (ENOMEM); 1300 } 1301 error = dcopyout(l, fp, where, sizeof(struct file)); 1302 if (error) 1303 return (error); 1304 buflen -= sizeof(struct file); 1305 where += sizeof(struct file); 1306 } 1307 *oldlenp = where - start; 1308 return (0); 1309} 1310 1311/* 1312 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. for the 1313 * former it merely checks the message buffer is set up. for the latter, 1314 * it also copies out the data if necessary. 1315 */ 1316static int 1317sysctl_msgbuf(SYSCTLFN_ARGS) 1318{ 1319 char *where = oldp; 1320 size_t len, maxlen; 1321 long beg, end; 1322 int error; 1323 1324 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1325 msgbufenabled = 0; 1326 return (ENXIO); 1327 } 1328 1329 switch (rnode->sysctl_num) { 1330 case KERN_MSGBUFSIZE: { 1331 struct sysctlnode node = *rnode; 1332 int msg_bufs = (int)msgbufp->msg_bufs; 1333 node.sysctl_data = &msg_bufs; 1334 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1335 } 1336 case KERN_MSGBUF: 1337 break; 1338 default: 1339 return (EOPNOTSUPP); 1340 } 1341 1342 if (newp != NULL) 1343 return (EPERM); 1344 1345 if (oldp == NULL) { 1346 /* always return full buffer size */ 1347 *oldlenp = msgbufp->msg_bufs; 1348 return (0); 1349 } 1350 1351 error = 0; 1352 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1353 1354 /* 1355 * First, copy from the write pointer to the end of 1356 * message buffer. 1357 */ 1358 beg = msgbufp->msg_bufx; 1359 end = msgbufp->msg_bufs; 1360 while (maxlen > 0) { 1361 len = MIN(end - beg, maxlen); 1362 if (len == 0) 1363 break; 1364 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1365 if (error) 1366 break; 1367 where += len; 1368 maxlen -= len; 1369 1370 /* 1371 * ... then, copy from the beginning of message buffer to 1372 * the write pointer. 1373 */ 1374 beg = 0; 1375 end = msgbufp->msg_bufx; 1376 } 1377 1378 return (error); 1379} 1380 1381/* 1382 * sysctl helper routine for kern.defcorename. in the case of a new 1383 * string being assigned, check that it's not a zero-length string. 1384 * (XXX the check in -current doesn't work, but do we really care?) 1385 */ 1386static int 1387sysctl_kern_defcorename(SYSCTLFN_ARGS) 1388{ 1389 int error; 1390 char *newcorename; 1391 struct sysctlnode node; 1392 1393 newcorename = PNBUF_GET(); 1394 node = *rnode; 1395 node.sysctl_data = &newcorename[0]; 1396 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1397 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1398 if (error || newp == NULL) { 1399 goto done; 1400 } 1401 1402 /* 1403 * when sysctl_lookup() deals with a string, it's guaranteed 1404 * to come back nul terminated. so there. :) 1405 */ 1406 if (strlen(newcorename) == 0) { 1407 error = EINVAL; 1408 } else { 1409 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1410 error = 0; 1411 } 1412done: 1413 PNBUF_PUT(newcorename); 1414 return error; 1415} 1416 1417/* 1418 * sysctl helper routine for kern.cp_time node. adds up cpu time 1419 * across all cpus. 1420 */ 1421static int 1422sysctl_kern_cptime(SYSCTLFN_ARGS) 1423{ 1424 struct sysctlnode node = *rnode; 1425 1426#ifndef MULTIPROCESSOR 1427 1428 if (namelen == 1) { 1429 if (name[0] != 0) 1430 return (ENOENT); 1431 /* 1432 * you're allowed to ask for the zero'th processor 1433 */ 1434 name++; 1435 namelen--; 1436 } 1437 node.sysctl_data = curcpu()->ci_schedstate.spc_cp_time; 1438 node.sysctl_size = sizeof(curcpu()->ci_schedstate.spc_cp_time); 1439 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1440 1441#else /* MULTIPROCESSOR */ 1442 1443 uint64_t *cp_time = NULL; 1444 int error, n = ncpu, i; 1445 struct cpu_info *ci; 1446 CPU_INFO_ITERATOR cii; 1447 1448 /* 1449 * if you specifically pass a buffer that is the size of the 1450 * sum, or if you are probing for the size, you get the "sum" 1451 * of cp_time (and the size thereof) across all processors. 1452 * 1453 * alternately, you can pass an additional mib number and get 1454 * cp_time for that particular processor. 1455 */ 1456 switch (namelen) { 1457 case 0: 1458 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1459 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1460 n = -1; /* SUM */ 1461 } 1462 else { 1463 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1464 n = -2; /* ALL */ 1465 } 1466 break; 1467 case 1: 1468 if (name[0] < 0 || name[0] >= n) 1469 return (ENOENT); /* ENOSUCHPROCESSOR */ 1470 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1471 n = name[0]; 1472 /* 1473 * adjust these so that sysctl_lookup() will be happy 1474 */ 1475 name++; 1476 namelen--; 1477 break; 1478 default: 1479 return (EINVAL); 1480 } 1481 1482 cp_time = malloc(node.sysctl_size, M_TEMP, M_WAITOK|M_CANFAIL); 1483 if (cp_time == NULL) 1484 return (ENOMEM); 1485 node.sysctl_data = cp_time; 1486 memset(cp_time, 0, node.sysctl_size); 1487 1488 for (CPU_INFO_FOREACH(cii, ci)) { 1489 if (n <= 0) 1490 for (i = 0; i < CPUSTATES; i++) 1491 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1492 /* 1493 * if a specific processor was requested and we just 1494 * did it, we're done here 1495 */ 1496 if (n == 0) 1497 break; 1498 /* 1499 * if doing "all", skip to next cp_time set for next processor 1500 */ 1501 if (n == -2) 1502 cp_time += CPUSTATES; 1503 /* 1504 * if we're doing a specific processor, we're one 1505 * processor closer 1506 */ 1507 if (n > 0) 1508 n--; 1509 } 1510 1511 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1512 free(node.sysctl_data, M_TEMP); 1513 return (error); 1514 1515#endif /* MULTIPROCESSOR */ 1516} 1517 1518#if NPTY > 0 1519/* 1520 * sysctl helper routine for kern.maxptys. ensures that any new value 1521 * is acceptable to the pty subsystem. 1522 */ 1523static int 1524sysctl_kern_maxptys(SYSCTLFN_ARGS) 1525{ 1526 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1527 int error, xmax; 1528 struct sysctlnode node; 1529 1530 /* get current value of maxptys */ 1531 xmax = pty_maxptys(0, 0); 1532 1533 node = *rnode; 1534 node.sysctl_data = &xmax; 1535 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1536 if (error || newp == NULL) 1537 return (error); 1538 1539 if (xmax != pty_maxptys(xmax, 1)) 1540 return (EINVAL); 1541 1542 return (0); 1543} 1544#endif /* NPTY > 0 */ 1545 1546/* 1547 * sysctl helper routine for kern.sbmax. basically just ensures that 1548 * any new value is not too small. 1549 */ 1550static int 1551sysctl_kern_sbmax(SYSCTLFN_ARGS) 1552{ 1553 int error, new_sbmax; 1554 struct sysctlnode node; 1555 1556 new_sbmax = sb_max; 1557 node = *rnode; 1558 node.sysctl_data = &new_sbmax; 1559 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1560 if (error || newp == NULL) 1561 return (error); 1562 1563 error = sb_max_set(new_sbmax); 1564 1565 return (error); 1566} 1567 1568/* 1569 * sysctl helper routine for kern.urandom node. picks a random number 1570 * for you. 1571 */ 1572static int 1573sysctl_kern_urnd(SYSCTLFN_ARGS) 1574{ 1575#if NRND > 0 1576 int v; 1577 1578 if (rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY) == sizeof(v)) { 1579 struct sysctlnode node = *rnode; 1580 node.sysctl_data = &v; 1581 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1582 } 1583 else 1584 return (EIO); /*XXX*/ 1585#else 1586 return (EOPNOTSUPP); 1587#endif 1588} 1589 1590/* 1591 * sysctl helper routine for kern.arandom node. picks a random number 1592 * for you. 1593 */ 1594static int 1595sysctl_kern_arnd(SYSCTLFN_ARGS) 1596{ 1597#if NRND > 0 1598 int error; 1599 void *v; 1600 struct sysctlnode node = *rnode; 1601 1602 if (*oldlenp == 0) 1603 return 0; 1604 if (*oldlenp > 8192) 1605 return E2BIG; 1606 1607 v = malloc(*oldlenp, M_TEMP, M_WAITOK); 1608 1609 arc4randbytes(v, *oldlenp); 1610 node.sysctl_data = v; 1611 node.sysctl_size = *oldlenp; 1612 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1613 free(v, M_TEMP); 1614 return error; 1615#else 1616 return (EOPNOTSUPP); 1617#endif 1618} 1619/* 1620 * sysctl helper routine to do kern.lwp.* work. 1621 */ 1622static int 1623sysctl_kern_lwp(SYSCTLFN_ARGS) 1624{ 1625 struct kinfo_lwp klwp; 1626 struct proc *p; 1627 struct lwp *l2; 1628 char *where, *dp; 1629 int pid, elem_size, elem_count; 1630 int buflen, needed, error; 1631 1632 if (namelen == 1 && name[0] == CTL_QUERY) 1633 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1634 1635 dp = where = oldp; 1636 buflen = where != NULL ? *oldlenp : 0; 1637 error = needed = 0; 1638 1639 if (newp != NULL || namelen != 3) 1640 return (EINVAL); 1641 pid = name[0]; 1642 elem_size = name[1]; 1643 elem_count = name[2]; 1644 1645 mutex_enter(&proclist_lock); 1646 if (pid == -1) { 1647 LIST_FOREACH(l2, &alllwp, l_list) { 1648 if (buflen >= elem_size && elem_count > 0) { 1649 lwp_lock(l2); 1650 fill_lwp(l2, &klwp); 1651 lwp_unlock(l2); 1652 1653 /* 1654 * Copy out elem_size, but not larger than 1655 * the size of a struct kinfo_proc2. 1656 * 1657 * XXX We should not be holding p_smutex, but 1658 * for now, the buffer is wired. Fix later. 1659 */ 1660 error = dcopyout(l, &klwp, dp, 1661 min(sizeof(klwp), elem_size)); 1662 if (error) 1663 goto cleanup; 1664 dp += elem_size; 1665 buflen -= elem_size; 1666 elem_count--; 1667 } 1668 needed += elem_size; 1669 } 1670 } else { 1671 p = p_find(pid, PFIND_LOCKED); 1672 if (p == NULL) { 1673 mutex_exit(&proclist_lock); 1674 return (ESRCH); 1675 } 1676 mutex_enter(&p->p_smutex); 1677 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1678 if (buflen >= elem_size && elem_count > 0) { 1679 lwp_lock(l2); 1680 fill_lwp(l2, &klwp); 1681 lwp_unlock(l2); 1682 1683 /* 1684 * Copy out elem_size, but not larger than 1685 * the size of a struct kinfo_proc2. 1686 * 1687 * XXX We should not be holding p_smutex, but 1688 * for now, the buffer is wired. Fix later. 1689 */ 1690 error = dcopyout(l, &klwp, dp, 1691 min(sizeof(klwp), elem_size)); 1692 if (error) 1693 goto cleanup; 1694 dp += elem_size; 1695 buflen -= elem_size; 1696 elem_count--; 1697 } 1698 needed += elem_size; 1699 } 1700 mutex_exit(&p->p_smutex); 1701 } 1702 mutex_exit(&proclist_lock); 1703 1704 if (where != NULL) { 1705 *oldlenp = dp - where; 1706 if (needed > *oldlenp) 1707 return (ENOMEM); 1708 } else { 1709 needed += KERN_LWPSLOP; 1710 *oldlenp = needed; 1711 } 1712 return (0); 1713 cleanup: 1714 return (error); 1715} 1716 1717/* 1718 * sysctl helper routine for kern.forkfsleep node. ensures that the 1719 * given value is not too large or two small, and is at least one 1720 * timer tick if not zero. 1721 */ 1722static int 1723sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1724{ 1725 /* userland sees value in ms, internally is in ticks */ 1726 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1727 int error, timo, lsleep; 1728 struct sysctlnode node; 1729 1730 lsleep = forkfsleep * 1000 / hz; 1731 node = *rnode; 1732 node.sysctl_data = &lsleep; 1733 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1734 if (error || newp == NULL) 1735 return (error); 1736 1737 /* refuse negative values, and overly 'long time' */ 1738 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1739 return (EINVAL); 1740 1741 timo = mstohz(lsleep); 1742 1743 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1744 if (lsleep != 0 && timo == 0) 1745 forkfsleep = 1; 1746 else 1747 forkfsleep = timo; 1748 1749 return (0); 1750} 1751 1752/* 1753 * sysctl helper routine for kern.root_partition 1754 */ 1755static int 1756sysctl_kern_root_partition(SYSCTLFN_ARGS) 1757{ 1758 int rootpart = DISKPART(rootdev); 1759 struct sysctlnode node = *rnode; 1760 1761 node.sysctl_data = &rootpart; 1762 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1763} 1764 1765/* 1766 * sysctl helper function for kern.drivers 1767 */ 1768static int 1769sysctl_kern_drivers(SYSCTLFN_ARGS) 1770{ 1771 int error; 1772 size_t buflen; 1773 struct kinfo_drivers kd; 1774 char *start, *where; 1775 const char *dname; 1776 int i; 1777 extern struct devsw_conv *devsw_conv; 1778 extern int max_devsw_convs; 1779 1780 if (newp != NULL || namelen != 0) 1781 return (EINVAL); 1782 1783 start = where = oldp; 1784 buflen = *oldlenp; 1785 if (where == NULL) { 1786 *oldlenp = max_devsw_convs * sizeof kd; 1787 return 0; 1788 } 1789 1790 /* 1791 * An array of kinfo_drivers structures 1792 */ 1793 error = 0; 1794 for (i = 0; i < max_devsw_convs; i++) { 1795 dname = devsw_conv[i].d_name; 1796 if (dname == NULL) 1797 continue; 1798 if (buflen < sizeof kd) { 1799 error = ENOMEM; 1800 break; 1801 } 1802 memset(&kd, 0, sizeof(kd)); 1803 kd.d_bmajor = devsw_conv[i].d_bmajor; 1804 kd.d_cmajor = devsw_conv[i].d_cmajor; 1805 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1806 error = dcopyout(l, &kd, where, sizeof kd); 1807 if (error != 0) 1808 break; 1809 buflen -= sizeof kd; 1810 where += sizeof kd; 1811 } 1812 *oldlenp = where - start; 1813 return error; 1814} 1815 1816/* 1817 * sysctl helper function for kern.file2 1818 */ 1819static int 1820sysctl_kern_file2(SYSCTLFN_ARGS) 1821{ 1822 struct proc *p; 1823 struct file *fp; 1824 struct filedesc *fd; 1825 struct kinfo_file kf; 1826 char *dp; 1827 u_int i, op; 1828 size_t len, needed, elem_size, out_size; 1829 int error, arg, elem_count; 1830 1831 if (namelen == 1 && name[0] == CTL_QUERY) 1832 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1833 1834 if (namelen != 4) 1835 return (EINVAL); 1836 1837 error = 0; 1838 dp = oldp; 1839 len = (oldp != NULL) ? *oldlenp : 0; 1840 op = name[0]; 1841 arg = name[1]; 1842 elem_size = name[2]; 1843 elem_count = name[3]; 1844 out_size = MIN(sizeof(kf), elem_size); 1845 needed = 0; 1846 1847 if (elem_size < 1 || elem_count < 0) 1848 return (EINVAL); 1849 1850 switch (op) { 1851 case KERN_FILE_BYFILE: 1852 /* 1853 * doesn't use arg so it must be zero 1854 */ 1855 if (arg != 0) 1856 return (EINVAL); 1857 LIST_FOREACH(fp, &filehead, f_list) { 1858 if (kauth_authorize_generic(l->l_cred, 1859 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) 1860 continue; 1861 if (len >= elem_size && elem_count > 0) { 1862 fill_file(&kf, fp, NULL, 0); 1863 error = dcopyout(l, &kf, dp, out_size); 1864 if (error) 1865 break; 1866 dp += elem_size; 1867 len -= elem_size; 1868 } 1869 if (elem_count > 0) { 1870 needed += elem_size; 1871 if (elem_count != INT_MAX) 1872 elem_count--; 1873 } 1874 } 1875 break; 1876 case KERN_FILE_BYPID: 1877 if (arg < -1) 1878 /* -1 means all processes */ 1879 return (EINVAL); 1880 mutex_enter(&proclist_lock); 1881 PROCLIST_FOREACH(p, &allproc) { 1882 if (p->p_stat == SIDL) 1883 /* skip embryonic processes */ 1884 continue; 1885 if (kauth_authorize_process(l->l_cred, 1886 KAUTH_PROCESS_CANSEE, p, NULL, NULL, NULL) != 0) 1887 continue; 1888 if (arg > 0 && p->p_pid != arg) 1889 /* pick only the one we want */ 1890 /* XXX want 0 to mean "kernel files" */ 1891 continue; 1892 fd = p->p_fd; 1893 for (i = 0; i < fd->fd_nfiles; i++) { 1894 fp = fd->fd_ofiles[i]; 1895 if (fp == NULL || !FILE_IS_USABLE(fp)) 1896 continue; 1897 if (len >= elem_size && elem_count > 0) { 1898 fill_file(&kf, fd->fd_ofiles[i], 1899 p, i); 1900 error = dcopyout(l, &kf, dp, out_size); 1901 if (error) 1902 break; 1903 dp += elem_size; 1904 len -= elem_size; 1905 } 1906 if (elem_count > 0) { 1907 needed += elem_size; 1908 if (elem_count != INT_MAX) 1909 elem_count--; 1910 } 1911 } 1912 } 1913 mutex_exit(&proclist_lock); 1914 break; 1915 default: 1916 return (EINVAL); 1917 } 1918 1919 if (oldp == NULL) 1920 needed += KERN_FILESLOP * elem_size; 1921 *oldlenp = needed; 1922 1923 return (error); 1924} 1925 1926static void 1927fill_file(struct kinfo_file *kp, const struct file *fp, struct proc *p, int i) 1928{ 1929 1930 memset(kp, 0, sizeof(*kp)); 1931 1932 kp->ki_fileaddr = PTRTOUINT64(fp); 1933 kp->ki_flag = fp->f_flag; 1934 kp->ki_iflags = fp->f_iflags; 1935 kp->ki_ftype = fp->f_type; 1936 kp->ki_count = fp->f_count; 1937 kp->ki_msgcount = fp->f_msgcount; 1938 kp->ki_usecount = fp->f_usecount; 1939 kp->ki_fucred = PTRTOUINT64(fp->f_cred); 1940 kp->ki_fuid = kauth_cred_geteuid(fp->f_cred); 1941 kp->ki_fgid = kauth_cred_getegid(fp->f_cred); 1942 kp->ki_fops = PTRTOUINT64(fp->f_ops); 1943 kp->ki_foffset = fp->f_offset; 1944 kp->ki_fdata = PTRTOUINT64(fp->f_data); 1945 1946 /* vnode information to glue this file to something */ 1947 if (fp->f_type == DTYPE_VNODE) { 1948 struct vnode *vp = (struct vnode *)fp->f_data; 1949 1950 kp->ki_vun = PTRTOUINT64(vp->v_un.vu_socket); 1951 kp->ki_vsize = vp->v_size; 1952 kp->ki_vtype = vp->v_type; 1953 kp->ki_vtag = vp->v_tag; 1954 kp->ki_vdata = PTRTOUINT64(vp->v_data); 1955 } 1956 1957 /* process information when retrieved via KERN_FILE_BYPID */ 1958 if (p) { 1959 kp->ki_pid = p->p_pid; 1960 kp->ki_fd = i; 1961 kp->ki_ofileflags = p->p_fd->fd_ofileflags[i]; 1962 } 1963} 1964 1965static int 1966sysctl_doeproc(SYSCTLFN_ARGS) 1967{ 1968 struct eproc *eproc; 1969 struct kinfo_proc2 *kproc2; 1970 struct kinfo_proc *dp; 1971 struct proc *p; 1972 const struct proclist_desc *pd; 1973 char *where, *dp2; 1974 int type, op, arg; 1975 u_int elem_size, elem_count; 1976 size_t buflen, needed; 1977 int error; 1978 1979 if (namelen == 1 && name[0] == CTL_QUERY) 1980 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1981 1982 dp = oldp; 1983 dp2 = where = oldp; 1984 buflen = where != NULL ? *oldlenp : 0; 1985 error = 0; 1986 needed = 0; 1987 type = rnode->sysctl_num; 1988 1989 if (type == KERN_PROC) { 1990 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 1991 return (EINVAL); 1992 op = name[0]; 1993 if (op != KERN_PROC_ALL) 1994 arg = name[1]; 1995 else 1996 arg = 0; /* Quell compiler warning */ 1997 elem_size = elem_count = 0; /* Ditto */ 1998 } else { 1999 if (namelen != 4) 2000 return (EINVAL); 2001 op = name[0]; 2002 arg = name[1]; 2003 elem_size = name[2]; 2004 elem_count = name[3]; 2005 } 2006 2007 if (type == KERN_PROC) { 2008 eproc = malloc(sizeof(*eproc), M_TEMP, M_WAITOK); 2009 kproc2 = NULL; 2010 } else { 2011 eproc = NULL; 2012 kproc2 = malloc(sizeof(*kproc2), M_TEMP, M_WAITOK); 2013 } 2014 mutex_enter(&proclist_lock); 2015 2016 pd = proclists; 2017again: 2018 PROCLIST_FOREACH(p, pd->pd_list) { 2019 /* 2020 * Skip embryonic processes. 2021 */ 2022 if (p->p_stat == SIDL) 2023 continue; 2024 2025 if (kauth_authorize_process(l->l_cred, 2026 KAUTH_PROCESS_CANSEE, p, NULL, NULL, NULL) != 0) 2027 continue; 2028 2029 /* 2030 * TODO - make more efficient (see notes below). 2031 * do by session. 2032 */ 2033 switch (op) { 2034 2035 case KERN_PROC_PID: 2036 /* could do this with just a lookup */ 2037 if (p->p_pid != (pid_t)arg) 2038 continue; 2039 break; 2040 2041 case KERN_PROC_PGRP: 2042 /* could do this by traversing pgrp */ 2043 if (p->p_pgrp->pg_id != (pid_t)arg) 2044 continue; 2045 break; 2046 2047 case KERN_PROC_SESSION: 2048 if (p->p_session->s_sid != (pid_t)arg) 2049 continue; 2050 break; 2051 2052 case KERN_PROC_TTY: 2053 if (arg == (int) KERN_PROC_TTY_REVOKE) { 2054 if ((p->p_lflag & PL_CONTROLT) == 0 || 2055 p->p_session->s_ttyp == NULL || 2056 p->p_session->s_ttyvp != NULL) 2057 continue; 2058 } else if ((p->p_lflag & PL_CONTROLT) == 0 || 2059 p->p_session->s_ttyp == NULL) { 2060 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 2061 continue; 2062 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 2063 continue; 2064 break; 2065 2066 case KERN_PROC_UID: 2067 if (kauth_cred_geteuid(p->p_cred) != (uid_t)arg) 2068 continue; 2069 break; 2070 2071 case KERN_PROC_RUID: 2072 if (kauth_cred_getuid(p->p_cred) != (uid_t)arg) 2073 continue; 2074 break; 2075 2076 case KERN_PROC_GID: 2077 if (kauth_cred_getegid(p->p_cred) != (uid_t)arg) 2078 continue; 2079 break; 2080 2081 case KERN_PROC_RGID: 2082 if (kauth_cred_getgid(p->p_cred) != (uid_t)arg) 2083 continue; 2084 break; 2085 2086 case KERN_PROC_ALL: 2087 /* allow everything */ 2088 break; 2089 2090 default: 2091 error = EINVAL; 2092 goto cleanup; 2093 } 2094 if (type == KERN_PROC) { 2095 if (buflen >= sizeof(struct kinfo_proc)) { 2096 fill_eproc(p, eproc); 2097 error = dcopyout(l, p, &dp->kp_proc, 2098 sizeof(struct proc)); 2099 if (error) 2100 goto cleanup; 2101 error = dcopyout(l, eproc, &dp->kp_eproc, 2102 sizeof(*eproc)); 2103 if (error) 2104 goto cleanup; 2105 dp++; 2106 buflen -= sizeof(struct kinfo_proc); 2107 } 2108 needed += sizeof(struct kinfo_proc); 2109 } else { /* KERN_PROC2 */ 2110 if (buflen >= elem_size && elem_count > 0) { 2111 fill_kproc2(p, kproc2); 2112 /* 2113 * Copy out elem_size, but not larger than 2114 * the size of a struct kinfo_proc2. 2115 */ 2116 error = dcopyout(l, kproc2, dp2, 2117 min(sizeof(*kproc2), elem_size)); 2118 if (error) 2119 goto cleanup; 2120 dp2 += elem_size; 2121 buflen -= elem_size; 2122 elem_count--; 2123 } 2124 needed += elem_size; 2125 } 2126 } 2127 pd++; 2128 if (pd->pd_list != NULL) 2129 goto again; 2130 mutex_exit(&proclist_lock); 2131 2132 if (where != NULL) { 2133 if (type == KERN_PROC) 2134 *oldlenp = (char *)dp - where; 2135 else 2136 *oldlenp = dp2 - where; 2137 if (needed > *oldlenp) { 2138 error = ENOMEM; 2139 goto out; 2140 } 2141 } else { 2142 needed += KERN_PROCSLOP; 2143 *oldlenp = needed; 2144 } 2145 if (kproc2) 2146 free(kproc2, M_TEMP); 2147 if (eproc) 2148 free(eproc, M_TEMP); 2149 return 0; 2150 cleanup: 2151 mutex_exit(&proclist_lock); 2152 out: 2153 if (kproc2) 2154 free(kproc2, M_TEMP); 2155 if (eproc) 2156 free(eproc, M_TEMP); 2157 return error; 2158} 2159 2160/* 2161 * sysctl helper routine for kern.proc_args pseudo-subtree. 2162 */ 2163static int 2164sysctl_kern_proc_args(SYSCTLFN_ARGS) 2165{ 2166 struct ps_strings pss; 2167 struct proc *p; 2168 size_t len, i; 2169 struct uio auio; 2170 struct iovec aiov; 2171 pid_t pid; 2172 int nargv, type, error; 2173 char *arg; 2174 char **argv = NULL; 2175 char *tmp; 2176 struct vmspace *vmspace; 2177 vaddr_t psstr_addr; 2178 vaddr_t offsetn; 2179 vaddr_t offsetv; 2180 2181 if (namelen == 1 && name[0] == CTL_QUERY) 2182 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2183 2184 if (newp != NULL || namelen != 2) 2185 return (EINVAL); 2186 pid = name[0]; 2187 type = name[1]; 2188 2189 switch (type) { 2190 case KERN_PROC_ARGV: 2191 case KERN_PROC_NARGV: 2192 case KERN_PROC_ENV: 2193 case KERN_PROC_NENV: 2194 /* ok */ 2195 break; 2196 default: 2197 return (EINVAL); 2198 } 2199 2200 mutex_enter(&proclist_lock); 2201 2202 /* check pid */ 2203 if ((p = p_find(pid, PFIND_LOCKED)) == NULL) { 2204 error = EINVAL; 2205 goto out_locked; 2206 } 2207 2208 error = kauth_authorize_process(l->l_cred, 2209 KAUTH_PROCESS_CANSEE, p, NULL, NULL, NULL); 2210 if (error) { 2211 goto out_locked; 2212 } 2213 2214 /* only root or same user change look at the environment */ 2215 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 2216 if (kauth_authorize_generic(l->l_cred, KAUTH_GENERIC_ISSUSER, 2217 NULL) != 0) { 2218 if (kauth_cred_getuid(l->l_cred) != 2219 kauth_cred_getuid(p->p_cred) || 2220 kauth_cred_getuid(l->l_cred) != 2221 kauth_cred_getsvuid(p->p_cred)) { 2222 error = EPERM; 2223 goto out_locked; 2224 } 2225 } 2226 } 2227 2228 if (oldp == NULL) { 2229 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 2230 *oldlenp = sizeof (int); 2231 else 2232 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 2233 error = 0; 2234 goto out_locked; 2235 } 2236 2237 /* 2238 * Zombies don't have a stack, so we can't read their psstrings. 2239 * System processes also don't have a user stack. 2240 */ 2241 if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) { 2242 error = EINVAL; 2243 goto out_locked; 2244 } 2245 2246 /* 2247 * Lock the process down in memory. 2248 */ 2249 /* XXXCDC: how should locking work here? */ 2250 if ((l->l_flag & LW_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) { 2251 error = EFAULT; 2252 goto out_locked; 2253 } 2254 2255 psstr_addr = (vaddr_t)p->p_psstr; 2256 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) { 2257 offsetn = p->p_psnargv; 2258 offsetv = p->p_psargv; 2259 } else { 2260 offsetn = p->p_psnenv; 2261 offsetv = p->p_psenv; 2262 } 2263 vmspace = p->p_vmspace; 2264 vmspace->vm_refcnt++; /* XXX */ 2265 2266 mutex_exit(&proclist_lock); 2267 2268 /* 2269 * Allocate a temporary buffer to hold the arguments. 2270 */ 2271 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 2272 2273 /* 2274 * Read in the ps_strings structure. 2275 */ 2276 aiov.iov_base = &pss; 2277 aiov.iov_len = sizeof(pss); 2278 auio.uio_iov = &aiov; 2279 auio.uio_iovcnt = 1; 2280 auio.uio_offset = psstr_addr; 2281 auio.uio_resid = sizeof(pss); 2282 auio.uio_rw = UIO_READ; 2283 UIO_SETUP_SYSSPACE(&auio); 2284 error = uvm_io(&vmspace->vm_map, &auio); 2285 if (error) 2286 goto done; 2287 2288 memcpy(&nargv, (char *)&pss + offsetn, sizeof(nargv)); 2289 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 2290 error = dcopyout(l, &nargv, oldp, sizeof(nargv)); 2291 *oldlenp = sizeof(nargv); 2292 goto done; 2293 } 2294 /* 2295 * Now read the address of the argument vector. 2296 */ 2297 switch (type) { 2298 case KERN_PROC_ARGV: 2299 /* FALLTHROUGH */ 2300 case KERN_PROC_ENV: 2301 memcpy(&tmp, (char *)&pss + offsetv, sizeof(tmp)); 2302 break; 2303 default: 2304 return (EINVAL); 2305 } 2306 2307#ifdef COMPAT_NETBSD32 2308 if (p->p_flag & PK_32) 2309 len = sizeof(netbsd32_charp) * nargv; 2310 else 2311#endif 2312 len = sizeof(char *) * nargv; 2313 2314 argv = malloc(len, M_TEMP, M_WAITOK); 2315 2316 aiov.iov_base = argv; 2317 aiov.iov_len = len; 2318 auio.uio_iov = &aiov; 2319 auio.uio_iovcnt = 1; 2320 auio.uio_offset = (off_t)(unsigned long)tmp; 2321 auio.uio_resid = len; 2322 auio.uio_rw = UIO_READ; 2323 UIO_SETUP_SYSSPACE(&auio); 2324 error = uvm_io(&vmspace->vm_map, &auio); 2325 if (error) 2326 goto done; 2327 2328 /* 2329 * Now copy each string. 2330 */ 2331 len = 0; /* bytes written to user buffer */ 2332 for (i = 0; i < nargv; i++) { 2333 int finished = 0; 2334 vaddr_t base; 2335 size_t xlen; 2336 int j; 2337 2338#ifdef COMPAT_NETBSD32 2339 if (p->p_flag & PK_32) { 2340 netbsd32_charp *argv32; 2341 2342 argv32 = (netbsd32_charp *)argv; 2343 2344 base = (vaddr_t)NETBSD32PTR64(argv32[i]); 2345 } else 2346#endif 2347 base = (vaddr_t)argv[i]; 2348 2349 while (!finished) { 2350 xlen = PAGE_SIZE - (base & PAGE_MASK); 2351 2352 aiov.iov_base = arg; 2353 aiov.iov_len = PAGE_SIZE; 2354 auio.uio_iov = &aiov; 2355 auio.uio_iovcnt = 1; 2356 auio.uio_offset = base; 2357 auio.uio_resid = xlen; 2358 auio.uio_rw = UIO_READ; 2359 UIO_SETUP_SYSSPACE(&auio); 2360 error = uvm_io(&vmspace->vm_map, &auio); 2361 if (error) 2362 goto done; 2363 2364 /* Look for the end of the string */ 2365 for (j = 0; j < xlen; j++) { 2366 if (arg[j] == '\0') { 2367 xlen = j + 1; 2368 finished = 1; 2369 break; 2370 } 2371 } 2372 2373 /* Check for user buffer overflow */ 2374 if (len + xlen > *oldlenp) { 2375 finished = 1; 2376 if (len > *oldlenp) 2377 xlen = 0; 2378 else 2379 xlen = *oldlenp - len; 2380 } 2381 2382 /* Copyout the page */ 2383 error = dcopyout(l, arg, (char *)oldp + len, xlen); 2384 if (error) 2385 goto done; 2386 2387 len += xlen; 2388 base += xlen; 2389 } 2390 } 2391 *oldlenp = len; 2392 2393done: 2394 if (argv != NULL) 2395 free(argv, M_TEMP); 2396 2397 uvmspace_free(vmspace); 2398 2399 free(arg, M_TEMP); 2400 return error; 2401 2402out_locked: 2403 mutex_exit(&proclist_lock); 2404 return error; 2405} 2406 2407static int 2408sysctl_security_setidcore(SYSCTLFN_ARGS) 2409{ 2410 int newsize, error; 2411 struct sysctlnode node; 2412 2413 node = *rnode; 2414 node.sysctl_data = &newsize; 2415 newsize = *(int *)rnode->sysctl_data; 2416 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2417 if (error || newp == NULL) 2418 return error; 2419 2420 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2421 0, NULL, NULL, NULL)) 2422 return (EPERM); 2423 2424 *(int *)rnode->sysctl_data = newsize; 2425 2426 return 0; 2427} 2428 2429static int 2430sysctl_security_setidcorename(SYSCTLFN_ARGS) 2431{ 2432 int error; 2433 char *newsetidcorename; 2434 struct sysctlnode node; 2435 2436 newsetidcorename = PNBUF_GET(); 2437 node = *rnode; 2438 node.sysctl_data = newsetidcorename; 2439 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 2440 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2441 if (error || newp == NULL) { 2442 goto out; 2443 } 2444 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2445 0, NULL, NULL, NULL)) { 2446 error = EPERM; 2447 goto out; 2448 } 2449 if (strlen(newsetidcorename) == 0) { 2450 error = EINVAL; 2451 goto out; 2452 } 2453 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 2454out: 2455 PNBUF_PUT(newsetidcorename); 2456 return error; 2457} 2458 2459/* 2460 * sysctl helper routine for kern.cp_id node. maps cpus to their 2461 * cpuids. 2462 */ 2463static int 2464sysctl_kern_cpid(SYSCTLFN_ARGS) 2465{ 2466 struct sysctlnode node = *rnode; 2467 2468#ifndef MULTIPROCESSOR 2469 uint64_t id; 2470 2471 if (namelen == 1) { 2472 if (name[0] != 0) 2473 return (ENOENT); 2474 /* 2475 * you're allowed to ask for the zero'th processor 2476 */ 2477 name++; 2478 namelen--; 2479 } 2480 node.sysctl_data = &id; 2481 node.sysctl_size = sizeof(id); 2482 id = cpu_number(); 2483 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2484 2485#else /* MULTIPROCESSOR */ 2486 uint64_t *cp_id = NULL; 2487 int error, n = ncpu; 2488 struct cpu_info *ci; 2489 CPU_INFO_ITERATOR cii; 2490 2491 /* 2492 * here you may either retrieve a single cpu id or the whole 2493 * set. the size you get back when probing depends on what 2494 * you ask for. 2495 */ 2496 switch (namelen) { 2497 case 0: 2498 node.sysctl_size = n * sizeof(uint64_t); 2499 n = -2; /* ALL */ 2500 break; 2501 case 1: 2502 if (name[0] < 0 || name[0] >= n) 2503 return (ENOENT); /* ENOSUCHPROCESSOR */ 2504 node.sysctl_size = sizeof(uint64_t); 2505 n = name[0]; 2506 /* 2507 * adjust these so that sysctl_lookup() will be happy 2508 */ 2509 name++; 2510 namelen--; 2511 break; 2512 default: 2513 return (EINVAL); 2514 } 2515 2516 cp_id = malloc(node.sysctl_size, M_TEMP, M_WAITOK|M_CANFAIL); 2517 if (cp_id == NULL) 2518 return (ENOMEM); 2519 node.sysctl_data = cp_id; 2520 memset(cp_id, 0, node.sysctl_size); 2521 2522 for (CPU_INFO_FOREACH(cii, ci)) { 2523 if (n <= 0) 2524 cp_id[0] = ci->ci_cpuid; 2525 /* 2526 * if a specific processor was requested and we just 2527 * did it, we're done here 2528 */ 2529 if (n == 0) 2530 break; 2531 /* 2532 * if doing "all", skip to next cp_id slot for next processor 2533 */ 2534 if (n == -2) 2535 cp_id++; 2536 /* 2537 * if we're doing a specific processor, we're one 2538 * processor closer 2539 */ 2540 if (n > 0) 2541 n--; 2542 } 2543 2544 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2545 free(node.sysctl_data, M_TEMP); 2546 return (error); 2547 2548#endif /* MULTIPROCESSOR */ 2549} 2550 2551/* 2552 * sysctl helper routine for hw.usermem and hw.usermem64. values are 2553 * calculate on the fly taking into account integer overflow and the 2554 * current wired count. 2555 */ 2556static int 2557sysctl_hw_usermem(SYSCTLFN_ARGS) 2558{ 2559 u_int ui; 2560 u_quad_t uq; 2561 struct sysctlnode node; 2562 2563 node = *rnode; 2564 switch (rnode->sysctl_num) { 2565 case HW_USERMEM: 2566 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 2567 ui = UINT_MAX; 2568 else 2569 ui *= PAGE_SIZE; 2570 node.sysctl_data = &ui; 2571 break; 2572 case HW_USERMEM64: 2573 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2574 node.sysctl_data = &uq; 2575 break; 2576 default: 2577 return (EINVAL); 2578 } 2579 2580 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2581} 2582 2583/* 2584 * sysctl helper routine for kern.cnmagic node. pulls the old value 2585 * out, encoded, and stuffs the new value in for decoding. 2586 */ 2587static int 2588sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2589{ 2590 char magic[CNS_LEN]; 2591 int error; 2592 struct sysctlnode node; 2593 2594 if (oldp) 2595 cn_get_magic(magic, CNS_LEN); 2596 node = *rnode; 2597 node.sysctl_data = &magic[0]; 2598 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2599 if (error || newp == NULL) 2600 return (error); 2601 2602 return (cn_set_magic(magic)); 2603} 2604 2605static int 2606sysctl_hw_ncpu(SYSCTLFN_ARGS) 2607{ 2608 struct sysctlnode node; 2609 2610 node = *rnode; 2611 node.sysctl_data = &ncpu; 2612 2613 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2614} 2615 2616 2617/* 2618 * ******************************************************************** 2619 * section 3: public helper routines that are used for more than one 2620 * node 2621 * ******************************************************************** 2622 */ 2623 2624/* 2625 * sysctl helper routine for the kern.root_device node and some ports' 2626 * machdep.root_device nodes. 2627 */ 2628int 2629sysctl_root_device(SYSCTLFN_ARGS) 2630{ 2631 struct sysctlnode node; 2632 2633 node = *rnode; 2634 node.sysctl_data = root_device->dv_xname; 2635 node.sysctl_size = strlen(root_device->dv_xname) + 1; 2636 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2637} 2638 2639/* 2640 * sysctl helper routine for kern.consdev, dependent on the current 2641 * state of the console. also used for machdep.console_device on some 2642 * ports. 2643 */ 2644int 2645sysctl_consdev(SYSCTLFN_ARGS) 2646{ 2647 dev_t consdev; 2648 struct sysctlnode node; 2649 2650 if (cn_tab != NULL) 2651 consdev = cn_tab->cn_dev; 2652 else 2653 consdev = NODEV; 2654 node = *rnode; 2655 node.sysctl_data = &consdev; 2656 node.sysctl_size = sizeof(consdev); 2657 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2658} 2659 2660/* 2661 * ******************************************************************** 2662 * section 4: support for some helpers 2663 * ******************************************************************** 2664 */ 2665 2666/* 2667 * Fill in a kinfo_proc2 structure for the specified process. 2668 */ 2669static void 2670fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 2671{ 2672 struct tty *tp; 2673 struct lwp *l, *l2; 2674 struct timeval ut, st, rt; 2675 sigset_t ss1, ss2; 2676 2677 memset(ki, 0, sizeof(*ki)); 2678 2679 ki->p_paddr = PTRTOUINT64(p); 2680 ki->p_fd = PTRTOUINT64(p->p_fd); 2681 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2682 ki->p_stats = PTRTOUINT64(p->p_stats); 2683 ki->p_limit = PTRTOUINT64(p->p_limit); 2684 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2685 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2686 ki->p_sess = PTRTOUINT64(p->p_session); 2687 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2688 ki->p_ru = PTRTOUINT64(&p->p_stats->p_ru); 2689 2690 ki->p_eflag = 0; 2691 ki->p_exitsig = p->p_exitsig; 2692 2693 ki->p_flag = sysctl_map_flags(sysctl_flagmap, p->p_flag); 2694 ki->p_flag |= sysctl_map_flags(sysctl_sflagmap, p->p_sflag); 2695 ki->p_flag |= sysctl_map_flags(sysctl_slflagmap, p->p_slflag); 2696 ki->p_flag |= sysctl_map_flags(sysctl_lflagmap, p->p_lflag); 2697 ki->p_flag |= sysctl_map_flags(sysctl_stflagmap, p->p_stflag); 2698 2699 ki->p_pid = p->p_pid; 2700 if (p->p_pptr) 2701 ki->p_ppid = p->p_pptr->p_pid; 2702 else 2703 ki->p_ppid = 0; 2704 ki->p_sid = p->p_session->s_sid; 2705 ki->p__pgid = p->p_pgrp->pg_id; 2706 2707 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2708 2709 ki->p_uid = kauth_cred_geteuid(p->p_cred); 2710 ki->p_ruid = kauth_cred_getuid(p->p_cred); 2711 ki->p_gid = kauth_cred_getegid(p->p_cred); 2712 ki->p_rgid = kauth_cred_getgid(p->p_cred); 2713 ki->p_svuid = kauth_cred_getsvuid(p->p_cred); 2714 ki->p_svgid = kauth_cred_getsvgid(p->p_cred); 2715 2716 ki->p_ngroups = kauth_cred_ngroups(p->p_cred); 2717 kauth_cred_getgroups(p->p_cred, ki->p_groups, 2718 min(ki->p_ngroups, sizeof(ki->p_groups) / sizeof(ki->p_groups[0])), 2719 UIO_SYSSPACE); 2720 2721 ki->p_jobc = p->p_pgrp->pg_jobc; 2722 if ((p->p_lflag & PL_CONTROLT) && (tp = p->p_session->s_ttyp)) { 2723 ki->p_tdev = tp->t_dev; 2724 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2725 ki->p_tsess = PTRTOUINT64(tp->t_session); 2726 } else { 2727 ki->p_tdev = NODEV; 2728 } 2729 2730 ki->p_estcpu = p->p_estcpu; 2731 2732 mutex_enter(&p->p_smutex); 2733 2734 ki->p_uticks = p->p_uticks; 2735 ki->p_sticks = p->p_sticks; 2736 ki->p_iticks = p->p_iticks; 2737 2738 ki->p_tracep = PTRTOUINT64(p->p_tracep); 2739 ki->p_traceflag = p->p_traceflag; 2740 2741 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2742 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2743 2744 ki->p_cpticks = 0; 2745 ki->p_pctcpu = p->p_pctcpu; 2746 ss1 = p->p_sigpend.sp_set; 2747 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 2748 /* This is hardly correct, but... */ 2749 sigplusset(&l->l_sigpend.sp_set, &ss1); 2750 sigplusset(&l->l_sigmask, &ss2); 2751 ki->p_cpticks += l->l_cpticks; 2752 ki->p_pctcpu += l->l_pctcpu; 2753 } 2754 memcpy(&ki->p_siglist, &ss1, sizeof(ki_sigset_t)); 2755 memcpy(&ki->p_sigmask, &ss2, sizeof(ki_sigset_t)); 2756 2757 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2758 ki->p_realstat = p->p_stat; 2759 ki->p_nice = p->p_nice; 2760 2761 ki->p_xstat = p->p_xstat; 2762 ki->p_acflag = p->p_acflag; 2763 2764 strncpy(ki->p_comm, p->p_comm, 2765 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2766 2767 strncpy(ki->p_login, p->p_session->s_login, 2768 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 2769 2770 ki->p_nlwps = p->p_nlwps; 2771 ki->p_realflag = ki->p_flag; 2772 2773 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2774 ki->p_vm_rssize = 0; 2775 ki->p_vm_tsize = 0; 2776 ki->p_vm_dsize = 0; 2777 ki->p_vm_ssize = 0; 2778 ki->p_nrlwps = 0; 2779 l = NULL; 2780 } else { 2781 struct vmspace *vm = p->p_vmspace; 2782 int tmp; 2783 2784 ki->p_vm_rssize = vm_resident_count(vm); 2785 ki->p_vm_tsize = vm->vm_tsize; 2786 ki->p_vm_dsize = vm->vm_dsize; 2787 ki->p_vm_ssize = vm->vm_ssize; 2788 2789 /* Pick a "representative" LWP */ 2790 l = proc_representative_lwp(p, &tmp, 1); 2791 lwp_lock(l); 2792 ki->p_nrlwps = tmp; 2793 ki->p_forw = 0; 2794 ki->p_back = 0; 2795 ki->p_addr = PTRTOUINT64(l->l_addr); 2796 ki->p_stat = l->l_stat; 2797 ki->p_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 2798 ki->p_swtime = l->l_swtime; 2799 ki->p_slptime = l->l_slptime; 2800 if (l->l_stat == LSONPROC) 2801 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2802 else 2803 ki->p_schedflags = 0; 2804 ki->p_holdcnt = l->l_holdcnt; 2805 ki->p_priority = l->l_priority; 2806 ki->p_usrpri = l->l_usrpri; 2807 if (l->l_wmesg) 2808 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 2809 ki->p_wchan = PTRTOUINT64(l->l_wchan); 2810 lwp_unlock(l); 2811 } 2812 if (p->p_session->s_ttyvp) 2813 ki->p_eflag |= EPROC_CTTY; 2814 if (SESS_LEADER(p)) 2815 ki->p_eflag |= EPROC_SLEADER; 2816 2817 /* XXX Is this double check necessary? */ 2818 if (P_ZOMBIE(p)) { 2819 ki->p_uvalid = 0; 2820 ki->p_rtime_sec = 0; 2821 ki->p_rtime_usec = 0; 2822 } else { 2823 ki->p_uvalid = 1; 2824 2825 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 2826 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 2827 2828 calcru(p, &ut, &st, NULL, &rt); 2829 ki->p_rtime_sec = rt.tv_sec; 2830 ki->p_rtime_usec = rt.tv_usec; 2831 ki->p_uutime_sec = ut.tv_sec; 2832 ki->p_uutime_usec = ut.tv_usec; 2833 ki->p_ustime_sec = st.tv_sec; 2834 ki->p_ustime_usec = st.tv_usec; 2835 2836 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 2837 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 2838 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 2839 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 2840 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 2841 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 2842 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 2843 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 2844 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 2845 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 2846 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 2847 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 2848 2849 ki->p_uru_nvcsw = 0; 2850 ki->p_uru_nivcsw = 0; 2851 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 2852 ki->p_uru_nvcsw += (l->l_ncsw - l->l_nivcsw); 2853 ki->p_uru_nivcsw += l->l_nivcsw; 2854 } 2855 2856 timeradd(&p->p_stats->p_cru.ru_utime, 2857 &p->p_stats->p_cru.ru_stime, &ut); 2858 ki->p_uctime_sec = ut.tv_sec; 2859 ki->p_uctime_usec = ut.tv_usec; 2860 } 2861#ifdef MULTIPROCESSOR 2862 if (l != NULL) 2863 ki->p_cpuid = l->l_cpu->ci_cpuid; 2864 else 2865#endif 2866 ki->p_cpuid = KI_NOCPU; 2867 2868 mutex_exit(&p->p_smutex); 2869} 2870 2871/* 2872 * Fill in a kinfo_lwp structure for the specified lwp. 2873 */ 2874static void 2875fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 2876{ 2877 struct proc *p = l->l_proc; 2878 2879 kl->l_forw = 0; 2880 kl->l_back = 0; 2881 kl->l_laddr = PTRTOUINT64(l); 2882 kl->l_addr = PTRTOUINT64(l->l_addr); 2883 kl->l_stat = l->l_stat; 2884 kl->l_lid = l->l_lid; 2885 kl->l_flag = sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 2886 2887 kl->l_swtime = l->l_swtime; 2888 kl->l_slptime = l->l_slptime; 2889 if (l->l_stat == LSONPROC) 2890 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2891 else 2892 kl->l_schedflags = 0; 2893 kl->l_holdcnt = l->l_holdcnt; 2894 kl->l_priority = l->l_priority; 2895 kl->l_usrpri = l->l_usrpri; 2896 if (l->l_wmesg) 2897 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 2898 kl->l_wchan = PTRTOUINT64(l->l_wchan); 2899#ifdef MULTIPROCESSOR 2900 kl->l_cpuid = l->l_cpu->ci_cpuid; 2901#else 2902 kl->l_cpuid = KI_NOCPU; 2903#endif 2904 kl->l_rtime_sec = l->l_rtime.tv_sec; 2905 kl->l_rtime_usec = l->l_rtime.tv_usec; 2906 kl->l_cpticks = l->l_cpticks; 2907 kl->l_pctcpu = l->l_pctcpu; 2908 kl->l_pid = p->p_pid; 2909 if (l->l_name == NULL) 2910 kl->l_name[0] = '\0'; 2911 else 2912 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 2913} 2914 2915/* 2916 * Fill in an eproc structure for the specified process. 2917 */ 2918void 2919fill_eproc(struct proc *p, struct eproc *ep) 2920{ 2921 struct tty *tp; 2922 struct lwp *l; 2923 2924 ep->e_paddr = p; 2925 ep->e_sess = p->p_session; 2926 kauth_cred_topcred(p->p_cred, &ep->e_pcred); 2927 kauth_cred_toucred(p->p_cred, &ep->e_ucred); 2928 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2929 ep->e_vm.vm_rssize = 0; 2930 ep->e_vm.vm_tsize = 0; 2931 ep->e_vm.vm_dsize = 0; 2932 ep->e_vm.vm_ssize = 0; 2933 /* ep->e_vm.vm_pmap = XXX; */ 2934 } else { 2935 struct vmspace *vm = p->p_vmspace; 2936 2937 ep->e_vm.vm_rssize = vm_resident_count(vm); 2938 ep->e_vm.vm_tsize = vm->vm_tsize; 2939 ep->e_vm.vm_dsize = vm->vm_dsize; 2940 ep->e_vm.vm_ssize = vm->vm_ssize; 2941 2942 /* Pick a "representative" LWP */ 2943 mutex_enter(&p->p_smutex); 2944 l = proc_representative_lwp(p, NULL, 1); 2945 lwp_lock(l); 2946 if (l->l_wmesg) 2947 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 2948 lwp_unlock(l); 2949 mutex_exit(&p->p_smutex); 2950 } 2951 if (p->p_pptr) 2952 ep->e_ppid = p->p_pptr->p_pid; 2953 else 2954 ep->e_ppid = 0; 2955 ep->e_pgid = p->p_pgrp->pg_id; 2956 ep->e_sid = ep->e_sess->s_sid; 2957 ep->e_jobc = p->p_pgrp->pg_jobc; 2958 if ((p->p_lflag & PL_CONTROLT) && 2959 (tp = ep->e_sess->s_ttyp)) { 2960 ep->e_tdev = tp->t_dev; 2961 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2962 ep->e_tsess = tp->t_session; 2963 } else 2964 ep->e_tdev = NODEV; 2965 2966 ep->e_xsize = ep->e_xrssize = 0; 2967 ep->e_xccount = ep->e_xswrss = 0; 2968 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 2969 if (SESS_LEADER(p)) 2970 ep->e_flag |= EPROC_SLEADER; 2971 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 2972} 2973 2974u_int 2975sysctl_map_flags(const u_int *map, u_int word) 2976{ 2977 u_int rv; 2978 2979 for (rv = 0; *map != 0; map += 2) 2980 if ((word & map[0]) != 0) 2981 rv |= map[1]; 2982 2983 return rv; 2984} 2985