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, 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 osrelease, 0, "Operating system release"); 95 96 SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD, 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 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, 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, 122 0, ARG_MAX, "Maximum bytes of argument to execve(2)"); 123 124 SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD, 125 0, _POSIX_VERSION, "Version of POSIX attempting to comply to"); 126 127 SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD, 128 0, NGROUPS_MAX, "Maximum number of groups a user can belong to"); 129 130 SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD, 131 0, 1, "Whether job control is available"); 132 133 #ifdef _POSIX_SAVED_IDS 134 SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 135 0, 1, "Whether saved set-group/user ID is available"); 136 #else 137 SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 138 0, 0, "Whether saved set-group/user ID is available"); 139 #endif 140 141 char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */ 142 143 SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW, 144 kernelname, sizeof kernelname, "Name of kernel file booted"); 145 146 SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD, 147 &mp_ncpus, 0, "Number of active CPUs"); 148 149 SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD, 150 0, BYTE_ORDER, "System byte order"); 151 152 SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD, 153 0, PAGE_SIZE, "System memory page size"); 154 155 static int 156 sysctl_kern_arnd(SYSCTL_HANDLER_ARGS) 157 { 158 char buf[256]; 159 size_t len; 160 161 len = req->oldlen; 162 if (len > sizeof(buf)) 163 len = sizeof(buf); 164 arc4rand(buf, len, 0); 165 return (SYSCTL_OUT(req, buf, len)); 166 } 167 168 SYSCTL_PROC(_kern, KERN_ARND, arandom, 169 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, 170 sysctl_kern_arnd, "", "arc4rand"); 171 172 static int 173 sysctl_hw_physmem(SYSCTL_HANDLER_ARGS) 174 { 175 u_long val; 176 177 val = ctob(physmem); 178 return (sysctl_handle_long(oidp, &val, 0, req)); 179 } 180 181 SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD, 182 0, 0, sysctl_hw_physmem, "LU", ""); 183 184 static int 185 sysctl_hw_realmem(SYSCTL_HANDLER_ARGS) 186 { 187 u_long val; 188 val = ctob(realmem); 189 return (sysctl_handle_long(oidp, &val, 0, req)); 190 } 191 SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG | CTLFLAG_RD, 192 0, 0, sysctl_hw_realmem, "LU", ""); 193 static int 194 sysctl_hw_usermem(SYSCTL_HANDLER_ARGS) 195 { 196 u_long val; 197 198 val = ctob(physmem - cnt.v_wire_count); 199 return (sysctl_handle_long(oidp, &val, 0, req)); 200 } 201 202 SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD, 203 0, 0, sysctl_hw_usermem, "LU", ""); 204 205 SYSCTL_ULONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, ""); 206 207 u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE }; 208 209 static int 210 sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS) 211 { 212 int error; 213 #ifdef SCTL_MASK32 214 int i; 215 uint32_t pagesizes32[MAXPAGESIZES]; 216 217 if (req->flags & SCTL_MASK32) { 218 /* 219 * Recreate the "pagesizes" array with 32-bit elements. Truncate 220 * any page size greater than UINT32_MAX to zero. 221 */ 222 for (i = 0; i < MAXPAGESIZES; i++) 223 pagesizes32[i] = (uint32_t)pagesizes[i]; 224 225 error = SYSCTL_OUT(req, pagesizes32, sizeof(pagesizes32)); 226 } else 227 #endif 228 error = SYSCTL_OUT(req, pagesizes, sizeof(pagesizes)); 229 return (error); 230 } 231 SYSCTL_PROC(_hw, OID_AUTO, pagesizes, CTLTYPE_ULONG | CTLFLAG_RD, 232 NULL, 0, sysctl_hw_pagesizes, "LU", "Supported page sizes"); 233 234 static char machine_arch[] = MACHINE_ARCH; 235 SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD, 236 machine_arch, 0, "System architecture"); 237 238 static int 239 sysctl_hostname(SYSCTL_HANDLER_ARGS) 240 { 241 struct prison *pr, *cpr; 242 size_t pr_offset; 243 char tmpname[MAXHOSTNAMELEN]; 244 int descend, error, len; 245 246 /* 247 * This function can set: hostname domainname hostuuid. 248 * Keep that in mind when comments say "hostname". 249 */ 250 pr_offset = (size_t)arg1; 251 len = arg2; 252 KASSERT(len <= sizeof(tmpname), 253 ("length %d too long for %s", len, __func__)); 254 255 pr = req->td->td_ucred->cr_prison; 256 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) 257 return (EPERM); 258 /* 259 * Make a local copy of hostname to get/set so we don't have to hold 260 * the jail mutex during the sysctl copyin/copyout activities. 261 */ 262 mtx_lock(&pr->pr_mtx); 263 bcopy((char *)pr + pr_offset, tmpname, len); 264 mtx_unlock(&pr->pr_mtx); 265 266 error = sysctl_handle_string(oidp, tmpname, len, req); 267 268 if (req->newptr != NULL && error == 0) { 269 /* 270 * Copy the locally set hostname to all jails that share 271 * this host info. 272 */ 273 sx_slock(&allprison_lock); 274 while (!(pr->pr_flags & PR_HOST)) 275 pr = pr->pr_parent; 276 mtx_lock(&pr->pr_mtx); 277 bcopy(tmpname, (char *)pr + pr_offset, len); 278 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) 279 if (cpr->pr_flags & PR_HOST) 280 descend = 0; 281 else 282 bcopy(tmpname, (char *)cpr + pr_offset, len); 283 mtx_unlock(&pr->pr_mtx); 284 sx_sunlock(&allprison_lock); 285 } 286 return (error); 287 } 288 289 SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, 290 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE, 291 (void *)(offsetof(struct prison, pr_hostname)), MAXHOSTNAMELEN, 292 sysctl_hostname, "A", "Hostname"); 293 SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname, 294 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE, 295 (void *)(offsetof(struct prison, pr_domainname)), MAXHOSTNAMELEN, 296 sysctl_hostname, "A", "Name of the current YP/NIS domain"); 297 SYSCTL_PROC(_kern, KERN_HOSTUUID, hostuuid, 298 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE, 299 (void *)(offsetof(struct prison, pr_hostuuid)), HOSTUUIDLEN, 300 sysctl_hostname, "A", "Host UUID"); 301 302 static int regression_securelevel_nonmonotonic = 0; 303 304 #ifdef REGRESSION 305 SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW, 306 ®ression_securelevel_nonmonotonic, 0, "securelevel may be lowered"); 307 #endif 308 309 static int 310 sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS) 311 { 312 struct prison *pr, *cpr; 313 int descend, error, level; 314 315 pr = req->td->td_ucred->cr_prison; 316 317 /* 318 * Reading the securelevel is easy, since the current jail's level 319 * is known to be at least as secure as any higher levels. Perform 320 * a lockless read since the securelevel is an integer. 321 */ 322 level = pr->pr_securelevel; 323 error = sysctl_handle_int(oidp, &level, 0, req); 324 if (error || !req->newptr) 325 return (error); 326 /* Permit update only if the new securelevel exceeds the old. */ 327 sx_slock(&allprison_lock); 328 mtx_lock(&pr->pr_mtx); 329 if (!regression_securelevel_nonmonotonic && 330 level < pr->pr_securelevel) { 331 mtx_unlock(&pr->pr_mtx); 332 sx_sunlock(&allprison_lock); 333 return (EPERM); 334 } 335 pr->pr_securelevel = level; 336 /* 337 * Set all child jails to be at least this level, but do not lower 338 * them (even if regression_securelevel_nonmonotonic). 339 */ 340 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) { 341 if (cpr->pr_securelevel < level) 342 cpr->pr_securelevel = level; 343 } 344 mtx_unlock(&pr->pr_mtx); 345 sx_sunlock(&allprison_lock); 346 return (error); 347 } 348 349 SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, 350 CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_PRISON, 0, 0, sysctl_kern_securelvl, 351 "I", "Current secure level"); 352 353 #ifdef INCLUDE_CONFIG_FILE 354 /* Actual kernel configuration options. */ 355 extern char kernconfstring[]; 356 357 static int 358 sysctl_kern_config(SYSCTL_HANDLER_ARGS) 359 { 360 return (sysctl_handle_string(oidp, kernconfstring, 361 strlen(kernconfstring), req)); 362 } 363 364 SYSCTL_PROC(_kern, OID_AUTO, conftxt, CTLTYPE_STRING|CTLFLAG_RW, 365 0, 0, sysctl_kern_config, "", "Kernel configuration file"); 366 #endif 367 368 static int 369 sysctl_hostid(SYSCTL_HANDLER_ARGS) 370 { 371 struct prison *pr, *cpr; 372 u_long tmpid; 373 int descend, error; 374 375 /* 376 * Like sysctl_hostname, except it operates on a u_long 377 * instead of a string, and is used only for hostid. 378 */ 379 pr = req->td->td_ucred->cr_prison; 380 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) 381 return (EPERM); 382 tmpid = pr->pr_hostid; 383 error = sysctl_handle_long(oidp, &tmpid, 0, req); 384 385 if (req->newptr != NULL && error == 0) { 386 sx_slock(&allprison_lock); 387 while (!(pr->pr_flags & PR_HOST)) 388 pr = pr->pr_parent; 389 mtx_lock(&pr->pr_mtx); 390 pr->pr_hostid = tmpid; 391 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) 392 if (cpr->pr_flags & PR_HOST) 393 descend = 0; 394 else 395 cpr->pr_hostid = tmpid; 396 mtx_unlock(&pr->pr_mtx); 397 sx_sunlock(&allprison_lock); 398 } 399 return (error); 400 } 401 402 SYSCTL_PROC(_kern, KERN_HOSTID, hostid, 403 CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE, 404 NULL, 0, sysctl_hostid, "LU", "Host ID"); 405 406 SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features"); 407 408 #ifdef COMPAT_FREEBSD4 409 FEATURE(compat_freebsd4, "Compatible with FreeBSD 4"); 410 #endif 411 412 #ifdef COMPAT_FREEBSD5 413 FEATURE(compat_freebsd5, "Compatible with FreeBSD 5"); 414 #endif 415 416 #ifdef COMPAT_FREEBSD6 417 FEATURE(compat_freebsd6, "Compatible with FreeBSD 6"); 418 #endif 419 420 #ifdef COMPAT_FREEBSD7 421 FEATURE(compat_freebsd7, "Compatible with FreeBSD 7"); 422 #endif 423 424 /* 425 * This is really cheating. These actually live in the libc, something 426 * which I'm not quite sure is a good idea anyway, but in order for 427 * getnext and friends to actually work, we define dummies here. 428 */ 429 SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD, 430 "", 0, "PATH that finds all the standard utilities"); 431 SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD, 432 0, 0, "Max ibase/obase values in bc(1)"); 433 SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD, 434 0, 0, "Max array size in bc(1)"); 435 SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD, 436 0, 0, "Max scale value in bc(1)"); 437 SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD, 438 0, 0, "Max string length in bc(1)"); 439 SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD, 440 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry"); 441 SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, ""); 442 SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD, 443 0, 0, "Max length (bytes) of a text-processing utility's input line"); 444 SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD, 445 0, 0, "Maximum number of repeats of a regexp permitted"); 446 SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD, 447 0, 0, 448 "The version of POSIX 1003.2 with which the system attempts to comply"); 449 SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD, 450 0, 0, "Whether C development supports the C bindings option"); 451 SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD, 452 0, 0, "Whether system supports the C development utilities option"); 453 SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD, 454 0, 0, ""); 455 SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD, 456 0, 0, "Whether system supports FORTRAN development utilities"); 457 SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD, 458 0, 0, "Whether system supports FORTRAN runtime utilities"); 459 SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD, 460 0, 0, "Whether system supports creation of locales"); 461 SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD, 462 0, 0, "Whether system supports software development utilities"); 463 SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD, 464 0, 0, "Whether system supports the user portability utilities"); 465 SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD, 466 0, 0, "Min Maximum number of streams a process may have open at one time"); 467 SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD, 468 0, 0, "Min Maximum number of types supported for timezone names"); 469 470 #include <sys/vnode.h> 471 SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD, 472 0, sizeof(struct vnode), "sizeof(struct vnode)"); 473 474 SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD, 475 0, sizeof(struct proc), "sizeof(struct proc)"); 476 477 #include <sys/bio.h> 478 #include <sys/buf.h> 479 SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD, 480 0, sizeof(struct bio), "sizeof(struct bio)"); 481 SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD, 482 0, sizeof(struct buf), "sizeof(struct buf)"); 483 484 #include <sys/user.h> 485 SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD, 486 0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)"); 487 488 /* XXX compatibility, remove for 6.0 */ 489 #include <sys/imgact.h> 490 #include <sys/imgact_elf.h> 491 SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW, 492 &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)), 493 "compatibility for kern.fallback_elf_brand"); 494