1 /*- 2 * Copyright (c) 1982, 1986, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Mike Karels at Berkeley Software Design, Inc. 7 * 8 * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD 9 * project, to make these variables more userfriendly. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94 36 */ 37 38 #include <sys/cdefs.h> 39 __FBSDID("$FreeBSD$"); 40 41 #include "opt_compat.h" 42 #include "opt_posix.h" 43 #include "opt_config.h" 44 45 #include <sys/param.h> 46 #include <sys/kernel.h> 47 #include <sys/sbuf.h> 48 #include <sys/systm.h> 49 #include <sys/sysctl.h> 50 #include <sys/proc.h> 51 #include <sys/lock.h> 52 #include <sys/mutex.h> 53 #include <sys/jail.h> 54 #include <sys/smp.h> 55 #include <sys/sx.h> 56 #include <sys/unistd.h> 57 58 SYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0, 59 "Sysctl internal magic"); 60 SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW|CTLFLAG_CAPRD, 0, 61 "High kernel, proc, limits &c"); 62 SYSCTL_NODE(, CTL_VM, vm, CTLFLAG_RW, 0, 63 "Virtual memory"); 64 SYSCTL_NODE(, CTL_VFS, vfs, CTLFLAG_RW, 0, 65 "File system"); 66 SYSCTL_NODE(, CTL_NET, net, CTLFLAG_RW, 0, 67 "Network, (see socket.h)"); 68 SYSCTL_NODE(, CTL_DEBUG, debug, CTLFLAG_RW, 0, 69 "Debugging"); 70 SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0, 71 "Sizeof various things"); 72 SYSCTL_NODE(, CTL_HW, hw, CTLFLAG_RW, 0, 73 "hardware"); 74 SYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0, 75 "machine dependent"); 76 SYSCTL_NODE(, CTL_USER, user, CTLFLAG_RW, 0, 77 "user-level"); 78 SYSCTL_NODE(, CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0, 79 "p1003_1b, (see p1003_1b.h)"); 80 81 SYSCTL_NODE(, OID_AUTO, compat, CTLFLAG_RW, 0, 82 "Compatibility code"); 83 SYSCTL_NODE(, OID_AUTO, security, CTLFLAG_RW, 0, 84 "Security"); 85 #ifdef REGRESSION 86 SYSCTL_NODE(, OID_AUTO, regression, CTLFLAG_RW, 0, 87 "Regression test MIB"); 88 #endif 89 90 SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD|CTLFLAG_MPSAFE, 91 kern_ident, 0, "Kernel identifier"); 92 93 SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD|CTLFLAG_MPSAFE| 94 CTLFLAG_CAPRD, osrelease, 0, "Operating system release"); 95 96 SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD|CTLFLAG_CAPRD, 97 0, BSD, "Operating system revision"); 98 99 SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD|CTLFLAG_MPSAFE, 100 version, 0, "Kernel version"); 101 102 SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD|CTLFLAG_MPSAFE| 103 CTLFLAG_CAPRD, ostype, 0, "Operating system type"); 104 105 /* 106 * NOTICE: The *userland* release date is available in 107 * /usr/include/osreldate.h 108 */ 109 SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD|CTLFLAG_CAPRD, 110 &osreldate, 0, "Kernel release date"); 111 112 SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RDTUN, 113 &maxproc, 0, "Maximum number of processes"); 114 115 SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW, 116 &maxprocperuid, 0, "Maximum processes allowed per userid"); 117 118 SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RDTUN, 119 &maxusers, 0, "Hint for kernel tuning"); 120 121 SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD|CTLFLAG_CAPRD, 122 0, ARG_MAX, "Maximum bytes of argument to execve(2)"); 123 124 SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD|CTLFLAG_CAPRD, 125 0, _POSIX_VERSION, "Version of POSIX attempting to comply to"); 126 127 SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RDTUN|CTLFLAG_CAPRD, 128 &ngroups_max, 0, 129 "Maximum number of supplemental groups a user can belong to"); 130 131 SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD|CTLFLAG_CAPRD, 132 0, 1, "Whether job control is available"); 133 134 #ifdef _POSIX_SAVED_IDS 135 SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD, 136 0, 1, "Whether saved set-group/user ID is available"); 137 #else 138 SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD, 139 0, 0, "Whether saved set-group/user ID is available"); 140 #endif 141 142 char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */ 143 144 SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW, 145 kernelname, sizeof kernelname, "Name of kernel file booted"); 146 147 SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD|CTLFLAG_CAPRD, 148 &mp_ncpus, 0, "Number of active CPUs"); 149 150 SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD|CTLFLAG_CAPRD, 151 0, BYTE_ORDER, "System byte order"); 152 153 SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD|CTLFLAG_CAPRD, 154 0, PAGE_SIZE, "System memory page size"); 155 156 static int 157 sysctl_kern_arnd(SYSCTL_HANDLER_ARGS) 158 { 159 char buf[256]; 160 size_t len; 161 162 len = req->oldlen; 163 if (len > sizeof(buf)) 164 len = sizeof(buf); 165 arc4rand(buf, len, 0); 166 return (SYSCTL_OUT(req, buf, len)); 167 } 168 169 SYSCTL_PROC(_kern, KERN_ARND, arandom, 170 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_CAPRD, NULL, 0, 171 sysctl_kern_arnd, "", "arc4rand"); 172 173 static int 174 sysctl_hw_physmem(SYSCTL_HANDLER_ARGS) 175 { 176 u_long val; 177 178 val = ctob(physmem); 179 return (sysctl_handle_long(oidp, &val, 0, req)); 180 } 181 182 SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD, 183 0, 0, sysctl_hw_physmem, "LU", ""); 184 185 static int 186 sysctl_hw_realmem(SYSCTL_HANDLER_ARGS) 187 { 188 u_long val; 189 val = ctob(realmem); 190 return (sysctl_handle_long(oidp, &val, 0, req)); 191 } 192 SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG | CTLFLAG_RD, 193 0, 0, sysctl_hw_realmem, "LU", ""); 194 static int 195 sysctl_hw_usermem(SYSCTL_HANDLER_ARGS) 196 { 197 u_long val; 198 199 val = ctob(physmem - cnt.v_wire_count); 200 return (sysctl_handle_long(oidp, &val, 0, req)); 201 } 202 203 SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD, 204 0, 0, sysctl_hw_usermem, "LU", ""); 205 206 SYSCTL_LONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, ""); 207 208 u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE }; 209 210 static int 211 sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS) 212 { 213 int error; 214 #ifdef SCTL_MASK32 215 int i; 216 uint32_t pagesizes32[MAXPAGESIZES]; 217 218 if (req->flags & SCTL_MASK32) { 219 /* 220 * Recreate the "pagesizes" array with 32-bit elements. Truncate 221 * any page size greater than UINT32_MAX to zero. 222 */ 223 for (i = 0; i < MAXPAGESIZES; i++) 224 pagesizes32[i] = (uint32_t)pagesizes[i]; 225 226 error = SYSCTL_OUT(req, pagesizes32, sizeof(pagesizes32)); 227 } else 228 #endif 229 error = SYSCTL_OUT(req, pagesizes, sizeof(pagesizes)); 230 return (error); 231 } 232 SYSCTL_PROC(_hw, OID_AUTO, pagesizes, CTLTYPE_ULONG | CTLFLAG_RD, 233 NULL, 0, sysctl_hw_pagesizes, "LU", "Supported page sizes"); 234 235 #ifdef SCTL_MASK32 236 int adaptive_machine_arch = 1; 237 SYSCTL_INT(_debug, OID_AUTO, adaptive_machine_arch, CTLFLAG_RW, 238 &adaptive_machine_arch, 1, 239 "Adapt reported machine architecture to the ABI of the binary"); 240 #endif 241 242 static int 243 sysctl_hw_machine_arch(SYSCTL_HANDLER_ARGS) 244 { 245 int error; 246 static const char machine_arch[] = MACHINE_ARCH; 247 #ifdef SCTL_MASK32 248 static const char machine_arch32[] = MACHINE_ARCH32; 249 250 if ((req->flags & SCTL_MASK32) != 0 && adaptive_machine_arch) 251 error = SYSCTL_OUT(req, machine_arch32, sizeof(machine_arch32)); 252 else 253 #endif 254 error = SYSCTL_OUT(req, machine_arch, sizeof(machine_arch)); 255 return (error); 256 257 } 258 SYSCTL_PROC(_hw, HW_MACHINE_ARCH, machine_arch, CTLTYPE_STRING | CTLFLAG_RD, 259 NULL, 0, sysctl_hw_machine_arch, "A", "System architecture"); 260 261 static int 262 sysctl_hostname(SYSCTL_HANDLER_ARGS) 263 { 264 struct prison *pr, *cpr; 265 size_t pr_offset; 266 char tmpname[MAXHOSTNAMELEN]; 267 int descend, error, len; 268 269 /* 270 * This function can set: hostname domainname hostuuid. 271 * Keep that in mind when comments say "hostname". 272 */ 273 pr_offset = (size_t)arg1; 274 len = arg2; 275 KASSERT(len <= sizeof(tmpname), 276 ("length %d too long for %s", len, __func__)); 277 278 pr = req->td->td_ucred->cr_prison; 279 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) 280 return (EPERM); 281 /* 282 * Make a local copy of hostname to get/set so we don't have to hold 283 * the jail mutex during the sysctl copyin/copyout activities. 284 */ 285 mtx_lock(&pr->pr_mtx); 286 bcopy((char *)pr + pr_offset, tmpname, len); 287 mtx_unlock(&pr->pr_mtx); 288 289 error = sysctl_handle_string(oidp, tmpname, len, req); 290 291 if (req->newptr != NULL && error == 0) { 292 /* 293 * Copy the locally set hostname to all jails that share 294 * this host info. 295 */ 296 sx_slock(&allprison_lock); 297 while (!(pr->pr_flags & PR_HOST)) 298 pr = pr->pr_parent; 299 mtx_lock(&pr->pr_mtx); 300 bcopy(tmpname, (char *)pr + pr_offset, len); 301 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) 302 if (cpr->pr_flags & PR_HOST) 303 descend = 0; 304 else 305 bcopy(tmpname, (char *)cpr + pr_offset, len); 306 mtx_unlock(&pr->pr_mtx); 307 sx_sunlock(&allprison_lock); 308 } 309 return (error); 310 } 311 312 SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, 313 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE, 314 (void *)(offsetof(struct prison, pr_hostname)), MAXHOSTNAMELEN, 315 sysctl_hostname, "A", "Hostname"); 316 SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname, 317 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE, 318 (void *)(offsetof(struct prison, pr_domainname)), MAXHOSTNAMELEN, 319 sysctl_hostname, "A", "Name of the current YP/NIS domain"); 320 SYSCTL_PROC(_kern, KERN_HOSTUUID, hostuuid, 321 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE, 322 (void *)(offsetof(struct prison, pr_hostuuid)), HOSTUUIDLEN, 323 sysctl_hostname, "A", "Host UUID"); 324 325 static int regression_securelevel_nonmonotonic = 0; 326 327 #ifdef REGRESSION 328 SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW, 329 ®ression_securelevel_nonmonotonic, 0, "securelevel may be lowered"); 330 #endif 331 332 static int 333 sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS) 334 { 335 struct prison *pr, *cpr; 336 int descend, error, level; 337 338 pr = req->td->td_ucred->cr_prison; 339 340 /* 341 * Reading the securelevel is easy, since the current jail's level 342 * is known to be at least as secure as any higher levels. Perform 343 * a lockless read since the securelevel is an integer. 344 */ 345 level = pr->pr_securelevel; 346 error = sysctl_handle_int(oidp, &level, 0, req); 347 if (error || !req->newptr) 348 return (error); 349 /* Permit update only if the new securelevel exceeds the old. */ 350 sx_slock(&allprison_lock); 351 mtx_lock(&pr->pr_mtx); 352 if (!regression_securelevel_nonmonotonic && 353 level < pr->pr_securelevel) { 354 mtx_unlock(&pr->pr_mtx); 355 sx_sunlock(&allprison_lock); 356 return (EPERM); 357 } 358 pr->pr_securelevel = level; 359 /* 360 * Set all child jails to be at least this level, but do not lower 361 * them (even if regression_securelevel_nonmonotonic). 362 */ 363 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) { 364 if (cpr->pr_securelevel < level) 365 cpr->pr_securelevel = level; 366 } 367 mtx_unlock(&pr->pr_mtx); 368 sx_sunlock(&allprison_lock); 369 return (error); 370 } 371 372 SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, 373 CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_PRISON, 0, 0, sysctl_kern_securelvl, 374 "I", "Current secure level"); 375 376 #ifdef INCLUDE_CONFIG_FILE 377 /* Actual kernel configuration options. */ 378 extern char kernconfstring[]; 379 380 static int 381 sysctl_kern_config(SYSCTL_HANDLER_ARGS) 382 { 383 return (sysctl_handle_string(oidp, kernconfstring, 384 strlen(kernconfstring), req)); 385 } 386 387 SYSCTL_PROC(_kern, OID_AUTO, conftxt, CTLTYPE_STRING|CTLFLAG_RW, 388 0, 0, sysctl_kern_config, "", "Kernel configuration file"); 389 #endif 390 391 static int 392 sysctl_hostid(SYSCTL_HANDLER_ARGS) 393 { 394 struct prison *pr, *cpr; 395 u_long tmpid; 396 int descend, error; 397 398 /* 399 * Like sysctl_hostname, except it operates on a u_long 400 * instead of a string, and is used only for hostid. 401 */ 402 pr = req->td->td_ucred->cr_prison; 403 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) 404 return (EPERM); 405 tmpid = pr->pr_hostid; 406 error = sysctl_handle_long(oidp, &tmpid, 0, req); 407 408 if (req->newptr != NULL && error == 0) { 409 sx_slock(&allprison_lock); 410 while (!(pr->pr_flags & PR_HOST)) 411 pr = pr->pr_parent; 412 mtx_lock(&pr->pr_mtx); 413 pr->pr_hostid = tmpid; 414 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) 415 if (cpr->pr_flags & PR_HOST) 416 descend = 0; 417 else 418 cpr->pr_hostid = tmpid; 419 mtx_unlock(&pr->pr_mtx); 420 sx_sunlock(&allprison_lock); 421 } 422 return (error); 423 } 424 425 SYSCTL_PROC(_kern, KERN_HOSTID, hostid, 426 CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE, 427 NULL, 0, sysctl_hostid, "LU", "Host ID"); 428 429 SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features"); 430 431 #ifdef COMPAT_FREEBSD4 432 FEATURE(compat_freebsd4, "Compatible with FreeBSD 4"); 433 #endif 434 435 #ifdef COMPAT_FREEBSD5 436 FEATURE(compat_freebsd5, "Compatible with FreeBSD 5"); 437 #endif 438 439 #ifdef COMPAT_FREEBSD6 440 FEATURE(compat_freebsd6, "Compatible with FreeBSD 6"); 441 #endif 442 443 #ifdef COMPAT_FREEBSD7 444 FEATURE(compat_freebsd7, "Compatible with FreeBSD 7"); 445 #endif 446 447 /* 448 * This is really cheating. These actually live in the libc, something 449 * which I'm not quite sure is a good idea anyway, but in order for 450 * getnext and friends to actually work, we define dummies here. 451 * 452 * XXXRW: These probably should be CTLFLAG_CAPRD. 453 */ 454 SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD, 455 "", 0, "PATH that finds all the standard utilities"); 456 SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD, 457 0, 0, "Max ibase/obase values in bc(1)"); 458 SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD, 459 0, 0, "Max array size in bc(1)"); 460 SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD, 461 0, 0, "Max scale value in bc(1)"); 462 SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD, 463 0, 0, "Max string length in bc(1)"); 464 SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD, 465 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry"); 466 SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, ""); 467 SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD, 468 0, 0, "Max length (bytes) of a text-processing utility's input line"); 469 SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD, 470 0, 0, "Maximum number of repeats of a regexp permitted"); 471 SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD, 472 0, 0, 473 "The version of POSIX 1003.2 with which the system attempts to comply"); 474 SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD, 475 0, 0, "Whether C development supports the C bindings option"); 476 SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD, 477 0, 0, "Whether system supports the C development utilities option"); 478 SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD, 479 0, 0, ""); 480 SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD, 481 0, 0, "Whether system supports FORTRAN development utilities"); 482 SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD, 483 0, 0, "Whether system supports FORTRAN runtime utilities"); 484 SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD, 485 0, 0, "Whether system supports creation of locales"); 486 SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD, 487 0, 0, "Whether system supports software development utilities"); 488 SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD, 489 0, 0, "Whether system supports the user portability utilities"); 490 SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD, 491 0, 0, "Min Maximum number of streams a process may have open at one time"); 492 SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD, 493 0, 0, "Min Maximum number of types supported for timezone names"); 494 495 #include <sys/vnode.h> 496 SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD, 497 0, sizeof(struct vnode), "sizeof(struct vnode)"); 498 499 SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD, 500 0, sizeof(struct proc), "sizeof(struct proc)"); 501 502 #include <sys/bio.h> 503 #include <sys/buf.h> 504 SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD, 505 0, sizeof(struct bio), "sizeof(struct bio)"); 506 SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD, 507 0, sizeof(struct buf), "sizeof(struct buf)"); 508 509 #include <sys/user.h> 510 SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD, 511 0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)"); 512 513 /* XXX compatibility, remove for 6.0 */ 514 #include <sys/imgact.h> 515 #include <sys/imgact_elf.h> 516 SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW, 517 &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)), 518 "compatibility for kern.fallback_elf_brand"); 519