Cross Reference: /freebsd-10.2-release/sys/kern/kern

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kern_mib.c (259465)	kern_mib.c (269446)
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>	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: stable/10/sys/kern/kern_mib.c 259465 2013-12-16 15:00:06Z nwhitehorn $");	39__FBSDID("$FreeBSD: stable/10/sys/kern/kern_mib.c 269446 2014-08-02 20:58:46Z hselasky $");
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	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
58SYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0,	58SYSCTL_ROOT_NODE(0, sysctl, CTLFLAG_RW, 0,
59 "Sysctl internal magic");	59 "Sysctl internal magic");
60SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW\|CTLFLAG_CAPRD, 0,	60SYSCTL_ROOT_NODE(CTL_KERN, kern, CTLFLAG_RW\|CTLFLAG_CAPRD, 0,
61 "High kernel, proc, limits &c");	61 "High kernel, proc, limits &c");
62SYSCTL_NODE(, CTL_VM, vm, CTLFLAG_RW, 0,	62SYSCTL_ROOT_NODE(CTL_VM, vm, CTLFLAG_RW, 0,
63 "Virtual memory");	63 "Virtual memory");
64SYSCTL_NODE(, CTL_VFS, vfs, CTLFLAG_RW, 0,	64SYSCTL_ROOT_NODE(CTL_VFS, vfs, CTLFLAG_RW, 0,
65 "File system");	65 "File system");
66SYSCTL_NODE(, CTL_NET, net, CTLFLAG_RW, 0,	66SYSCTL_ROOT_NODE(CTL_NET, net, CTLFLAG_RW, 0,
67 "Network, (see socket.h)");	67 "Network, (see socket.h)");
68SYSCTL_NODE(, CTL_DEBUG, debug, CTLFLAG_RW, 0,	68SYSCTL_ROOT_NODE(CTL_DEBUG, debug, CTLFLAG_RW, 0,
69 "Debugging"); 70SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0, 71 "Sizeof various things");	69 "Debugging"); 70SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0, 71 "Sizeof various things");
72SYSCTL_NODE(, CTL_HW, hw, CTLFLAG_RW, 0,	72SYSCTL_ROOT_NODE(CTL_HW, hw, CTLFLAG_RW, 0,
73 "hardware");	73 "hardware");
74SYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0,	74SYSCTL_ROOT_NODE(CTL_MACHDEP, machdep, CTLFLAG_RW, 0,
75 "machine dependent");	75 "machine dependent");
76SYSCTL_NODE(, CTL_USER, user, CTLFLAG_RW, 0,	76SYSCTL_ROOT_NODE(CTL_USER, user, CTLFLAG_RW, 0,
77 "user-level");	77 "user-level");
78SYSCTL_NODE(, CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0,	78SYSCTL_ROOT_NODE(CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0,
79 "p1003_1b, (see p1003_1b.h)"); 80	79 "p1003_1b, (see p1003_1b.h)"); 80
81SYSCTL_NODE(, OID_AUTO, compat, CTLFLAG_RW, 0,	81SYSCTL_ROOT_NODE(OID_AUTO, compat, CTLFLAG_RW, 0,
82 "Compatibility code");	82 "Compatibility code");
83SYSCTL_NODE(, OID_AUTO, security, CTLFLAG_RW, 0,	83SYSCTL_ROOT_NODE(OID_AUTO, security, CTLFLAG_RW, 0,
84 "Security"); 85#ifdef REGRESSION	84 "Security"); 85#ifdef REGRESSION
86SYSCTL_NODE(, OID_AUTO, regression, CTLFLAG_RW, 0,	86SYSCTL_ROOT_NODE(OID_AUTO, regression, CTLFLAG_RW, 0,
87 "Regression test MIB"); 88#endif 89 90SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD\|CTLFLAG_MPSAFE, 91 kern_ident, 0, "Kernel identifier"); 92 93SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD\|CTLFLAG_MPSAFE\| 94 CTLFLAG_CAPRD, osrelease, 0, "Operating system release"); 95 96SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD\|CTLFLAG_CAPRD, 97 0, BSD, "Operating system revision"); 98 99SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD\|CTLFLAG_MPSAFE, 100 version, 0, "Kernel version"); 101 102SYSCTL_STRING(_kern, OID_AUTO, compiler_version, CTLFLAG_RD\|CTLFLAG_MPSAFE, 103 compiler_version, 0, "Version of compiler used to compile kernel"); 104 105SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD\|CTLFLAG_MPSAFE\| 106 CTLFLAG_CAPRD, ostype, 0, "Operating system type"); 107 108/* 109 * NOTICE: The userland release date is available in 110 * /usr/include/osreldate.h 111 / 112SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD\|CTLFLAG_CAPRD, 113* &osreldate, 0, "Kernel release date"); 114 115SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RDTUN, 116 &maxproc, 0, "Maximum number of processes"); 117 118SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW, 119 &maxprocperuid, 0, "Maximum processes allowed per userid"); 120 121SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RDTUN, 122 &maxusers, 0, "Hint for kernel tuning"); 123 124SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD\|CTLFLAG_CAPRD, 125 0, ARG_MAX, "Maximum bytes of argument to execve(2)"); 126 127SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD\|CTLFLAG_CAPRD, 128 0, _POSIX_VERSION, "Version of POSIX attempting to comply to"); 129 130SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RDTUN\|CTLFLAG_CAPRD, 131 &ngroups_max, 0, 132 "Maximum number of supplemental groups a user can belong to"); 133 134SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD\|CTLFLAG_CAPRD, 135 0, 1, "Whether job control is available"); 136 137#ifdef _POSIX_SAVED_IDS 138SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD\|CTLFLAG_CAPRD, 139 0, 1, "Whether saved set-group/user ID is available"); 140#else 141SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD\|CTLFLAG_CAPRD, 142 0, 0, "Whether saved set-group/user ID is available"); 143#endif 144 145char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat / 146* 147SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW, 148 kernelname, sizeof kernelname, "Name of kernel file booted"); 149 150SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD\|CTLFLAG_CAPRD, 151 &mp_ncpus, 0, "Number of active CPUs"); 152 153SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD\|CTLFLAG_CAPRD, 154 0, BYTE_ORDER, "System byte order"); 155 156SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD\|CTLFLAG_CAPRD, 157 0, PAGE_SIZE, "System memory page size"); 158 159static int 160sysctl_kern_arnd(SYSCTL_HANDLER_ARGS) 161{ 162 char buf[256]; 163 size_t len; 164 165 len = req->oldlen; 166 if (len > sizeof(buf)) 167 len = sizeof(buf); 168 arc4rand(buf, len, 0); 169 return (SYSCTL_OUT(req, buf, len)); 170} 171 172SYSCTL_PROC(_kern, KERN_ARND, arandom, 173 CTLTYPE_OPAQUE \| CTLFLAG_RD \| CTLFLAG_MPSAFE \| CTLFLAG_CAPRD, NULL, 0, 174 sysctl_kern_arnd, "", "arc4rand"); 175 176static int 177sysctl_hw_physmem(SYSCTL_HANDLER_ARGS) 178{ 179 u_long val; 180 181 val = ctob(physmem); 182 return (sysctl_handle_long(oidp, &val, 0, req)); 183} 184 185SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG \| CTLFLAG_RD, 186 0, 0, sysctl_hw_physmem, "LU", ""); 187 188static int 189sysctl_hw_realmem(SYSCTL_HANDLER_ARGS) 190{ 191 u_long val; 192 val = ctob(realmem); 193 return (sysctl_handle_long(oidp, &val, 0, req)); 194} 195SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG \| CTLFLAG_RD, 196 0, 0, sysctl_hw_realmem, "LU", ""); 197static int 198sysctl_hw_usermem(SYSCTL_HANDLER_ARGS) 199{ 200 u_long val; 201 202 val = ctob(physmem - cnt.v_wire_count); 203 return (sysctl_handle_long(oidp, &val, 0, req)); 204} 205 206SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG \| CTLFLAG_RD, 207 0, 0, sysctl_hw_usermem, "LU", ""); 208 209SYSCTL_LONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, ""); 210 211u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE }; 212 213static int 214sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS) 215{ 216 int error; 217#ifdef SCTL_MASK32 218 int i; 219 uint32_t pagesizes32[MAXPAGESIZES]; 220 221 if (req->flags & SCTL_MASK32) { 222 /* 223 * Recreate the "pagesizes" array with 32-bit elements. Truncate 224 * any page size greater than UINT32_MAX to zero. 225 / 226* for (i = 0; i < MAXPAGESIZES; i++) 227 pagesizes32[i] = (uint32_t)pagesizes[i]; 228 229 error = SYSCTL_OUT(req, pagesizes32, sizeof(pagesizes32)); 230 } else 231#endif 232 error = SYSCTL_OUT(req, pagesizes, sizeof(pagesizes)); 233 return (error); 234} 235SYSCTL_PROC(_hw, OID_AUTO, pagesizes, CTLTYPE_ULONG \| CTLFLAG_RD, 236 NULL, 0, sysctl_hw_pagesizes, "LU", "Supported page sizes"); 237 238#ifdef SCTL_MASK32 239int adaptive_machine_arch = 1; 240SYSCTL_INT(_debug, OID_AUTO, adaptive_machine_arch, CTLFLAG_RW, 241 &adaptive_machine_arch, 1, 242 "Adapt reported machine architecture to the ABI of the binary"); 243#endif 244 245static int 246sysctl_hw_machine_arch(SYSCTL_HANDLER_ARGS) 247{ 248 int error; 249 static const char machine_arch[] = MACHINE_ARCH; 250#ifdef SCTL_MASK32 251 static const char machine_arch32[] = MACHINE_ARCH32; 252 253 if ((req->flags & SCTL_MASK32) != 0 && adaptive_machine_arch) 254 error = SYSCTL_OUT(req, machine_arch32, sizeof(machine_arch32)); 255 else 256#endif 257 error = SYSCTL_OUT(req, machine_arch, sizeof(machine_arch)); 258 return (error); 259 260} 261SYSCTL_PROC(_hw, HW_MACHINE_ARCH, machine_arch, CTLTYPE_STRING \| CTLFLAG_RD, 262 NULL, 0, sysctl_hw_machine_arch, "A", "System architecture"); 263 264SYSCTL_STRING(_kern, OID_AUTO, supported_archs, CTLFLAG_RD \| CTLFLAG_MPSAFE, 265#ifdef COMPAT_FREEBSD32 266 MACHINE_ARCH " " MACHINE_ARCH32, 0, "Supported architectures for binaries"); 267#else 268 MACHINE_ARCH, 0, "Supported architectures for binaries"); 269#endif 270 271static int 272sysctl_hostname(SYSCTL_HANDLER_ARGS) 273{ 274 struct prison pr, cpr; 275 size_t pr_offset; 276 char tmpname[MAXHOSTNAMELEN]; 277 int descend, error, len; 278 279 /* 280 * This function can set: hostname domainname hostuuid. 281 * Keep that in mind when comments say "hostname". 282 / 283* pr_offset = (size_t)arg1; 284 len = arg2; 285 KASSERT(len <= sizeof(tmpname), 286 ("length %d too long for %s", len, __func__)); 287 288 pr = req->td->td_ucred->cr_prison; 289 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) 290 return (EPERM); 291 /* 292 * Make a local copy of hostname to get/set so we don't have to hold 293 * the jail mutex during the sysctl copyin/copyout activities. 294 / 295* mtx_lock(&pr->pr_mtx); 296 bcopy((char )pr + pr_offset, tmpname, len); 297* mtx_unlock(&pr->pr_mtx); 298 299 error = sysctl_handle_string(oidp, tmpname, len, req); 300 301 if (req->newptr != NULL && error == 0) { 302 /* 303 * Copy the locally set hostname to all jails that share 304 * this host info. 305 / 306* sx_slock(&allprison_lock); 307 while (!(pr->pr_flags & PR_HOST)) 308 pr = pr->pr_parent; 309 mtx_lock(&pr->pr_mtx); 310 bcopy(tmpname, (char )pr + pr_offset, len); 311* FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) 312 if (cpr->pr_flags & PR_HOST) 313 descend = 0; 314 else 315 bcopy(tmpname, (char )cpr + pr_offset, len); 316* mtx_unlock(&pr->pr_mtx); 317 sx_sunlock(&allprison_lock); 318 } 319 return (error); 320} 321 322SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, 323 CTLTYPE_STRING \| CTLFLAG_RW \| CTLFLAG_PRISON \| CTLFLAG_MPSAFE, 324 (void )(offsetof(struct prison, pr_hostname)), MAXHOSTNAMELEN, 325* sysctl_hostname, "A", "Hostname"); 326SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname, 327 CTLTYPE_STRING \| CTLFLAG_RW \| CTLFLAG_PRISON \| CTLFLAG_MPSAFE, 328 (void )(offsetof(struct prison, pr_domainname)), MAXHOSTNAMELEN, 329* sysctl_hostname, "A", "Name of the current YP/NIS domain"); 330SYSCTL_PROC(_kern, KERN_HOSTUUID, hostuuid, 331 CTLTYPE_STRING \| CTLFLAG_RW \| CTLFLAG_PRISON \| CTLFLAG_MPSAFE, 332 (void )(offsetof(struct prison, pr_hostuuid)), HOSTUUIDLEN, 333* sysctl_hostname, "A", "Host UUID"); 334 335static int regression_securelevel_nonmonotonic = 0; 336 337#ifdef REGRESSION 338SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW, 339 &regression_securelevel_nonmonotonic, 0, "securelevel may be lowered"); 340#endif 341 342static int 343sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS) 344{ 345 struct prison pr, cpr; 346 int descend, error, level; 347 348 pr = req->td->td_ucred->cr_prison; 349 350 /* 351 * Reading the securelevel is easy, since the current jail's level 352 * is known to be at least as secure as any higher levels. Perform 353 * a lockless read since the securelevel is an integer. 354 / 355* level = pr->pr_securelevel; 356 error = sysctl_handle_int(oidp, &level, 0, req); 357 if (error \|\| !req->newptr) 358 return (error); 359 /* Permit update only if the new securelevel exceeds the old. / 360* sx_slock(&allprison_lock); 361 mtx_lock(&pr->pr_mtx); 362 if (!regression_securelevel_nonmonotonic && 363 level < pr->pr_securelevel) { 364 mtx_unlock(&pr->pr_mtx); 365 sx_sunlock(&allprison_lock); 366 return (EPERM); 367 } 368 pr->pr_securelevel = level; 369 /* 370 * Set all child jails to be at least this level, but do not lower 371 * them (even if regression_securelevel_nonmonotonic). 372 / 373* FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) { 374 if (cpr->pr_securelevel < level) 375 cpr->pr_securelevel = level; 376 } 377 mtx_unlock(&pr->pr_mtx); 378 sx_sunlock(&allprison_lock); 379 return (error); 380} 381 382SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, 383 CTLTYPE_INT\|CTLFLAG_RW\|CTLFLAG_PRISON, 0, 0, sysctl_kern_securelvl, 384 "I", "Current secure level"); 385 386#ifdef INCLUDE_CONFIG_FILE 387/* Actual kernel configuration options. / 388extern char kernconfstring[]; 389* 390SYSCTL_STRING(_kern, OID_AUTO, conftxt, CTLFLAG_RD, kernconfstring, 0, 391 "Kernel configuration file"); 392#endif 393 394static int 395sysctl_hostid(SYSCTL_HANDLER_ARGS) 396{ 397 struct prison pr, cpr; 398 u_long tmpid; 399 int descend, error; 400 401 /* 402 * Like sysctl_hostname, except it operates on a u_long 403 * instead of a string, and is used only for hostid. 404 / 405* pr = req->td->td_ucred->cr_prison; 406 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) 407 return (EPERM); 408 tmpid = pr->pr_hostid; 409 error = sysctl_handle_long(oidp, &tmpid, 0, req); 410 411 if (req->newptr != NULL && error == 0) { 412 sx_slock(&allprison_lock); 413 while (!(pr->pr_flags & PR_HOST)) 414 pr = pr->pr_parent; 415 mtx_lock(&pr->pr_mtx); 416 pr->pr_hostid = tmpid; 417 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) 418 if (cpr->pr_flags & PR_HOST) 419 descend = 0; 420 else 421 cpr->pr_hostid = tmpid; 422 mtx_unlock(&pr->pr_mtx); 423 sx_sunlock(&allprison_lock); 424 } 425 return (error); 426} 427 428SYSCTL_PROC(_kern, KERN_HOSTID, hostid, 429 CTLTYPE_ULONG \| CTLFLAG_RW \| CTLFLAG_PRISON \| CTLFLAG_MPSAFE, 430 NULL, 0, sysctl_hostid, "LU", "Host ID"); 431 432SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features"); 433 434#ifdef COMPAT_FREEBSD4 435FEATURE(compat_freebsd4, "Compatible with FreeBSD 4"); 436#endif 437 438#ifdef COMPAT_FREEBSD5 439FEATURE(compat_freebsd5, "Compatible with FreeBSD 5"); 440#endif 441 442#ifdef COMPAT_FREEBSD6 443FEATURE(compat_freebsd6, "Compatible with FreeBSD 6"); 444#endif 445 446#ifdef COMPAT_FREEBSD7 447FEATURE(compat_freebsd7, "Compatible with FreeBSD 7"); 448#endif 449 450/* 451 * This is really cheating. These actually live in the libc, something 452 * which I'm not quite sure is a good idea anyway, but in order for 453 * getnext and friends to actually work, we define dummies here. 454 * 455 * XXXRW: These probably should be CTLFLAG_CAPRD. 456 / 457SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD, 458* "", 0, "PATH that finds all the standard utilities"); 459SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD, 460 0, 0, "Max ibase/obase values in bc(1)"); 461SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD, 462 0, 0, "Max array size in bc(1)"); 463SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD, 464 0, 0, "Max scale value in bc(1)"); 465SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD, 466 0, 0, "Max string length in bc(1)"); 467SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD, 468 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry"); 469SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, ""); 470SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD, 471 0, 0, "Max length (bytes) of a text-processing utility's input line"); 472SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD, 473 0, 0, "Maximum number of repeats of a regexp permitted"); 474SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD, 475 0, 0, 476 "The version of POSIX 1003.2 with which the system attempts to comply"); 477SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD, 478 0, 0, "Whether C development supports the C bindings option"); 479SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD, 480 0, 0, "Whether system supports the C development utilities option"); 481SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD, 482 0, 0, ""); 483SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD, 484 0, 0, "Whether system supports FORTRAN development utilities"); 485SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD, 486 0, 0, "Whether system supports FORTRAN runtime utilities"); 487SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD, 488 0, 0, "Whether system supports creation of locales"); 489SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD, 490 0, 0, "Whether system supports software development utilities"); 491SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD, 492 0, 0, "Whether system supports the user portability utilities"); 493SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD, 494 0, 0, "Min Maximum number of streams a process may have open at one time"); 495SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD, 496 0, 0, "Min Maximum number of types supported for timezone names"); 497 498#include <sys/vnode.h> 499SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD, 500 0, sizeof(struct vnode), "sizeof(struct vnode)"); 501 502SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD, 503 0, sizeof(struct proc), "sizeof(struct proc)"); 504 505static int 506sysctl_kern_pid_max(SYSCTL_HANDLER_ARGS) 507{ 508 int error, pm; 509 510 pm = pid_max; 511 error = sysctl_handle_int(oidp, &pm, 0, req); 512 if (error \|\| !req->newptr) 513 return (error); 514 sx_xlock(&proctree_lock); 515 sx_xlock(&allproc_lock); 516 517 /* 518 * Only permit the values less then PID_MAX. 519 * As a safety measure, do not allow to limit the pid_max too much. 520 / 521* if (pm < 300 \|\| pm > PID_MAX) 522 error = EINVAL; 523 else 524 pid_max = pm; 525 sx_xunlock(&allproc_lock); 526 sx_xunlock(&proctree_lock); 527 return (error); 528} 529SYSCTL_PROC(_kern, OID_AUTO, pid_max, CTLTYPE_INT \| CTLFLAG_RW \| CTLFLAG_TUN \| 530 CTLFLAG_MPSAFE, 0, 0, sysctl_kern_pid_max, "I", 531 "Maximum allowed pid"); 532 533#include <sys/bio.h> 534#include <sys/buf.h> 535SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD, 536 0, sizeof(struct bio), "sizeof(struct bio)"); 537SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD, 538 0, sizeof(struct buf), "sizeof(struct buf)"); 539 540#include <sys/user.h> 541SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD, 542 0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)"); 543 544/* XXX compatibility, remove for 6.0 / 545#include <sys/imgact.h> 546#include <sys/imgact_elf.h> 547SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW, 548* &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)), 549 "compatibility for kern.fallback_elf_brand");	87 "Regression test MIB"); 88#endif 89 90SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD\|CTLFLAG_MPSAFE, 91 kern_ident, 0, "Kernel identifier"); 92 93SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD\|CTLFLAG_MPSAFE\| 94 CTLFLAG_CAPRD, osrelease, 0, "Operating system release"); 95 96SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD\|CTLFLAG_CAPRD, 97 0, BSD, "Operating system revision"); 98 99SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD\|CTLFLAG_MPSAFE, 100 version, 0, "Kernel version"); 101 102SYSCTL_STRING(_kern, OID_AUTO, compiler_version, CTLFLAG_RD\|CTLFLAG_MPSAFE, 103 compiler_version, 0, "Version of compiler used to compile kernel"); 104 105SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD\|CTLFLAG_MPSAFE\| 106 CTLFLAG_CAPRD, ostype, 0, "Operating system type"); 107 108/* 109 * NOTICE: The userland release date is available in 110 * /usr/include/osreldate.h 111 / 112SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD\|CTLFLAG_CAPRD, 113* &osreldate, 0, "Kernel release date"); 114 115SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RDTUN, 116 &maxproc, 0, "Maximum number of processes"); 117 118SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW, 119 &maxprocperuid, 0, "Maximum processes allowed per userid"); 120 121SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RDTUN, 122 &maxusers, 0, "Hint for kernel tuning"); 123 124SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD\|CTLFLAG_CAPRD, 125 0, ARG_MAX, "Maximum bytes of argument to execve(2)"); 126 127SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD\|CTLFLAG_CAPRD, 128 0, _POSIX_VERSION, "Version of POSIX attempting to comply to"); 129 130SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RDTUN\|CTLFLAG_CAPRD, 131 &ngroups_max, 0, 132 "Maximum number of supplemental groups a user can belong to"); 133 134SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD\|CTLFLAG_CAPRD, 135 0, 1, "Whether job control is available"); 136 137#ifdef _POSIX_SAVED_IDS 138SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD\|CTLFLAG_CAPRD, 139 0, 1, "Whether saved set-group/user ID is available"); 140#else 141SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD\|CTLFLAG_CAPRD, 142 0, 0, "Whether saved set-group/user ID is available"); 143#endif 144 145char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat / 146* 147SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW, 148 kernelname, sizeof kernelname, "Name of kernel file booted"); 149 150SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD\|CTLFLAG_CAPRD, 151 &mp_ncpus, 0, "Number of active CPUs"); 152 153SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD\|CTLFLAG_CAPRD, 154 0, BYTE_ORDER, "System byte order"); 155 156SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD\|CTLFLAG_CAPRD, 157 0, PAGE_SIZE, "System memory page size"); 158 159static int 160sysctl_kern_arnd(SYSCTL_HANDLER_ARGS) 161{ 162 char buf[256]; 163 size_t len; 164 165 len = req->oldlen; 166 if (len > sizeof(buf)) 167 len = sizeof(buf); 168 arc4rand(buf, len, 0); 169 return (SYSCTL_OUT(req, buf, len)); 170} 171 172SYSCTL_PROC(_kern, KERN_ARND, arandom, 173 CTLTYPE_OPAQUE \| CTLFLAG_RD \| CTLFLAG_MPSAFE \| CTLFLAG_CAPRD, NULL, 0, 174 sysctl_kern_arnd, "", "arc4rand"); 175 176static int 177sysctl_hw_physmem(SYSCTL_HANDLER_ARGS) 178{ 179 u_long val; 180 181 val = ctob(physmem); 182 return (sysctl_handle_long(oidp, &val, 0, req)); 183} 184 185SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG \| CTLFLAG_RD, 186 0, 0, sysctl_hw_physmem, "LU", ""); 187 188static int 189sysctl_hw_realmem(SYSCTL_HANDLER_ARGS) 190{ 191 u_long val; 192 val = ctob(realmem); 193 return (sysctl_handle_long(oidp, &val, 0, req)); 194} 195SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG \| CTLFLAG_RD, 196 0, 0, sysctl_hw_realmem, "LU", ""); 197static int 198sysctl_hw_usermem(SYSCTL_HANDLER_ARGS) 199{ 200 u_long val; 201 202 val = ctob(physmem - cnt.v_wire_count); 203 return (sysctl_handle_long(oidp, &val, 0, req)); 204} 205 206SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG \| CTLFLAG_RD, 207 0, 0, sysctl_hw_usermem, "LU", ""); 208 209SYSCTL_LONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, ""); 210 211u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE }; 212 213static int 214sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS) 215{ 216 int error; 217#ifdef SCTL_MASK32 218 int i; 219 uint32_t pagesizes32[MAXPAGESIZES]; 220 221 if (req->flags & SCTL_MASK32) { 222 /* 223 * Recreate the "pagesizes" array with 32-bit elements. Truncate 224 * any page size greater than UINT32_MAX to zero. 225 / 226* for (i = 0; i < MAXPAGESIZES; i++) 227 pagesizes32[i] = (uint32_t)pagesizes[i]; 228 229 error = SYSCTL_OUT(req, pagesizes32, sizeof(pagesizes32)); 230 } else 231#endif 232 error = SYSCTL_OUT(req, pagesizes, sizeof(pagesizes)); 233 return (error); 234} 235SYSCTL_PROC(_hw, OID_AUTO, pagesizes, CTLTYPE_ULONG \| CTLFLAG_RD, 236 NULL, 0, sysctl_hw_pagesizes, "LU", "Supported page sizes"); 237 238#ifdef SCTL_MASK32 239int adaptive_machine_arch = 1; 240SYSCTL_INT(_debug, OID_AUTO, adaptive_machine_arch, CTLFLAG_RW, 241 &adaptive_machine_arch, 1, 242 "Adapt reported machine architecture to the ABI of the binary"); 243#endif 244 245static int 246sysctl_hw_machine_arch(SYSCTL_HANDLER_ARGS) 247{ 248 int error; 249 static const char machine_arch[] = MACHINE_ARCH; 250#ifdef SCTL_MASK32 251 static const char machine_arch32[] = MACHINE_ARCH32; 252 253 if ((req->flags & SCTL_MASK32) != 0 && adaptive_machine_arch) 254 error = SYSCTL_OUT(req, machine_arch32, sizeof(machine_arch32)); 255 else 256#endif 257 error = SYSCTL_OUT(req, machine_arch, sizeof(machine_arch)); 258 return (error); 259 260} 261SYSCTL_PROC(_hw, HW_MACHINE_ARCH, machine_arch, CTLTYPE_STRING \| CTLFLAG_RD, 262 NULL, 0, sysctl_hw_machine_arch, "A", "System architecture"); 263 264SYSCTL_STRING(_kern, OID_AUTO, supported_archs, CTLFLAG_RD \| CTLFLAG_MPSAFE, 265#ifdef COMPAT_FREEBSD32 266 MACHINE_ARCH " " MACHINE_ARCH32, 0, "Supported architectures for binaries"); 267#else 268 MACHINE_ARCH, 0, "Supported architectures for binaries"); 269#endif 270 271static int 272sysctl_hostname(SYSCTL_HANDLER_ARGS) 273{ 274 struct prison pr, cpr; 275 size_t pr_offset; 276 char tmpname[MAXHOSTNAMELEN]; 277 int descend, error, len; 278 279 /* 280 * This function can set: hostname domainname hostuuid. 281 * Keep that in mind when comments say "hostname". 282 / 283* pr_offset = (size_t)arg1; 284 len = arg2; 285 KASSERT(len <= sizeof(tmpname), 286 ("length %d too long for %s", len, __func__)); 287 288 pr = req->td->td_ucred->cr_prison; 289 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) 290 return (EPERM); 291 /* 292 * Make a local copy of hostname to get/set so we don't have to hold 293 * the jail mutex during the sysctl copyin/copyout activities. 294 / 295* mtx_lock(&pr->pr_mtx); 296 bcopy((char )pr + pr_offset, tmpname, len); 297* mtx_unlock(&pr->pr_mtx); 298 299 error = sysctl_handle_string(oidp, tmpname, len, req); 300 301 if (req->newptr != NULL && error == 0) { 302 /* 303 * Copy the locally set hostname to all jails that share 304 * this host info. 305 / 306* sx_slock(&allprison_lock); 307 while (!(pr->pr_flags & PR_HOST)) 308 pr = pr->pr_parent; 309 mtx_lock(&pr->pr_mtx); 310 bcopy(tmpname, (char )pr + pr_offset, len); 311* FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) 312 if (cpr->pr_flags & PR_HOST) 313 descend = 0; 314 else 315 bcopy(tmpname, (char )cpr + pr_offset, len); 316* mtx_unlock(&pr->pr_mtx); 317 sx_sunlock(&allprison_lock); 318 } 319 return (error); 320} 321 322SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, 323 CTLTYPE_STRING \| CTLFLAG_RW \| CTLFLAG_PRISON \| CTLFLAG_MPSAFE, 324 (void )(offsetof(struct prison, pr_hostname)), MAXHOSTNAMELEN, 325* sysctl_hostname, "A", "Hostname"); 326SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname, 327 CTLTYPE_STRING \| CTLFLAG_RW \| CTLFLAG_PRISON \| CTLFLAG_MPSAFE, 328 (void )(offsetof(struct prison, pr_domainname)), MAXHOSTNAMELEN, 329* sysctl_hostname, "A", "Name of the current YP/NIS domain"); 330SYSCTL_PROC(_kern, KERN_HOSTUUID, hostuuid, 331 CTLTYPE_STRING \| CTLFLAG_RW \| CTLFLAG_PRISON \| CTLFLAG_MPSAFE, 332 (void )(offsetof(struct prison, pr_hostuuid)), HOSTUUIDLEN, 333* sysctl_hostname, "A", "Host UUID"); 334 335static int regression_securelevel_nonmonotonic = 0; 336 337#ifdef REGRESSION 338SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW, 339 &regression_securelevel_nonmonotonic, 0, "securelevel may be lowered"); 340#endif 341 342static int 343sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS) 344{ 345 struct prison pr, cpr; 346 int descend, error, level; 347 348 pr = req->td->td_ucred->cr_prison; 349 350 /* 351 * Reading the securelevel is easy, since the current jail's level 352 * is known to be at least as secure as any higher levels. Perform 353 * a lockless read since the securelevel is an integer. 354 / 355* level = pr->pr_securelevel; 356 error = sysctl_handle_int(oidp, &level, 0, req); 357 if (error \|\| !req->newptr) 358 return (error); 359 /* Permit update only if the new securelevel exceeds the old. / 360* sx_slock(&allprison_lock); 361 mtx_lock(&pr->pr_mtx); 362 if (!regression_securelevel_nonmonotonic && 363 level < pr->pr_securelevel) { 364 mtx_unlock(&pr->pr_mtx); 365 sx_sunlock(&allprison_lock); 366 return (EPERM); 367 } 368 pr->pr_securelevel = level; 369 /* 370 * Set all child jails to be at least this level, but do not lower 371 * them (even if regression_securelevel_nonmonotonic). 372 / 373* FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) { 374 if (cpr->pr_securelevel < level) 375 cpr->pr_securelevel = level; 376 } 377 mtx_unlock(&pr->pr_mtx); 378 sx_sunlock(&allprison_lock); 379 return (error); 380} 381 382SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, 383 CTLTYPE_INT\|CTLFLAG_RW\|CTLFLAG_PRISON, 0, 0, sysctl_kern_securelvl, 384 "I", "Current secure level"); 385 386#ifdef INCLUDE_CONFIG_FILE 387/* Actual kernel configuration options. / 388extern char kernconfstring[]; 389* 390SYSCTL_STRING(_kern, OID_AUTO, conftxt, CTLFLAG_RD, kernconfstring, 0, 391 "Kernel configuration file"); 392#endif 393 394static int 395sysctl_hostid(SYSCTL_HANDLER_ARGS) 396{ 397 struct prison pr, cpr; 398 u_long tmpid; 399 int descend, error; 400 401 /* 402 * Like sysctl_hostname, except it operates on a u_long 403 * instead of a string, and is used only for hostid. 404 / 405* pr = req->td->td_ucred->cr_prison; 406 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) 407 return (EPERM); 408 tmpid = pr->pr_hostid; 409 error = sysctl_handle_long(oidp, &tmpid, 0, req); 410 411 if (req->newptr != NULL && error == 0) { 412 sx_slock(&allprison_lock); 413 while (!(pr->pr_flags & PR_HOST)) 414 pr = pr->pr_parent; 415 mtx_lock(&pr->pr_mtx); 416 pr->pr_hostid = tmpid; 417 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) 418 if (cpr->pr_flags & PR_HOST) 419 descend = 0; 420 else 421 cpr->pr_hostid = tmpid; 422 mtx_unlock(&pr->pr_mtx); 423 sx_sunlock(&allprison_lock); 424 } 425 return (error); 426} 427 428SYSCTL_PROC(_kern, KERN_HOSTID, hostid, 429 CTLTYPE_ULONG \| CTLFLAG_RW \| CTLFLAG_PRISON \| CTLFLAG_MPSAFE, 430 NULL, 0, sysctl_hostid, "LU", "Host ID"); 431 432SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features"); 433 434#ifdef COMPAT_FREEBSD4 435FEATURE(compat_freebsd4, "Compatible with FreeBSD 4"); 436#endif 437 438#ifdef COMPAT_FREEBSD5 439FEATURE(compat_freebsd5, "Compatible with FreeBSD 5"); 440#endif 441 442#ifdef COMPAT_FREEBSD6 443FEATURE(compat_freebsd6, "Compatible with FreeBSD 6"); 444#endif 445 446#ifdef COMPAT_FREEBSD7 447FEATURE(compat_freebsd7, "Compatible with FreeBSD 7"); 448#endif 449 450/* 451 * This is really cheating. These actually live in the libc, something 452 * which I'm not quite sure is a good idea anyway, but in order for 453 * getnext and friends to actually work, we define dummies here. 454 * 455 * XXXRW: These probably should be CTLFLAG_CAPRD. 456 / 457SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD, 458* "", 0, "PATH that finds all the standard utilities"); 459SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD, 460 0, 0, "Max ibase/obase values in bc(1)"); 461SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD, 462 0, 0, "Max array size in bc(1)"); 463SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD, 464 0, 0, "Max scale value in bc(1)"); 465SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD, 466 0, 0, "Max string length in bc(1)"); 467SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD, 468 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry"); 469SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, ""); 470SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD, 471 0, 0, "Max length (bytes) of a text-processing utility's input line"); 472SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD, 473 0, 0, "Maximum number of repeats of a regexp permitted"); 474SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD, 475 0, 0, 476 "The version of POSIX 1003.2 with which the system attempts to comply"); 477SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD, 478 0, 0, "Whether C development supports the C bindings option"); 479SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD, 480 0, 0, "Whether system supports the C development utilities option"); 481SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD, 482 0, 0, ""); 483SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD, 484 0, 0, "Whether system supports FORTRAN development utilities"); 485SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD, 486 0, 0, "Whether system supports FORTRAN runtime utilities"); 487SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD, 488 0, 0, "Whether system supports creation of locales"); 489SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD, 490 0, 0, "Whether system supports software development utilities"); 491SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD, 492 0, 0, "Whether system supports the user portability utilities"); 493SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD, 494 0, 0, "Min Maximum number of streams a process may have open at one time"); 495SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD, 496 0, 0, "Min Maximum number of types supported for timezone names"); 497 498#include <sys/vnode.h> 499SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD, 500 0, sizeof(struct vnode), "sizeof(struct vnode)"); 501 502SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD, 503 0, sizeof(struct proc), "sizeof(struct proc)"); 504 505static int 506sysctl_kern_pid_max(SYSCTL_HANDLER_ARGS) 507{ 508 int error, pm; 509 510 pm = pid_max; 511 error = sysctl_handle_int(oidp, &pm, 0, req); 512 if (error \|\| !req->newptr) 513 return (error); 514 sx_xlock(&proctree_lock); 515 sx_xlock(&allproc_lock); 516 517 /* 518 * Only permit the values less then PID_MAX. 519 * As a safety measure, do not allow to limit the pid_max too much. 520 / 521* if (pm < 300 \|\| pm > PID_MAX) 522 error = EINVAL; 523 else 524 pid_max = pm; 525 sx_xunlock(&allproc_lock); 526 sx_xunlock(&proctree_lock); 527 return (error); 528} 529SYSCTL_PROC(_kern, OID_AUTO, pid_max, CTLTYPE_INT \| CTLFLAG_RW \| CTLFLAG_TUN \| 530 CTLFLAG_MPSAFE, 0, 0, sysctl_kern_pid_max, "I", 531 "Maximum allowed pid"); 532 533#include <sys/bio.h> 534#include <sys/buf.h> 535SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD, 536 0, sizeof(struct bio), "sizeof(struct bio)"); 537SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD, 538 0, sizeof(struct buf), "sizeof(struct buf)"); 539 540#include <sys/user.h> 541SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD, 542 0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)"); 543 544/* XXX compatibility, remove for 6.0 / 545#include <sys/imgact.h> 546#include <sys/imgact_elf.h> 547SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW, 548* &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)), 549 "compatibility for kern.fallback_elf_brand");