kern_mib.c revision 57111
138774Snsouch/*- 238774Snsouch * Copyright (c) 1982, 1986, 1989, 1993 338774Snsouch * The Regents of the University of California. All rights reserved. 438774Snsouch * 538774Snsouch * This code is derived from software contributed to Berkeley by 638774Snsouch * Mike Karels at Berkeley Software Design, Inc. 738774Snsouch * 838774Snsouch * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD 938774Snsouch * project, to make these variables more userfriendly. 1038774Snsouch * 1138774Snsouch * Redistribution and use in source and binary forms, with or without 1238774Snsouch * modification, are permitted provided that the following conditions 1338774Snsouch * are met: 1438774Snsouch * 1. Redistributions of source code must retain the above copyright 1538774Snsouch * notice, this list of conditions and the following disclaimer. 1638774Snsouch * 2. Redistributions in binary form must reproduce the above copyright 1738774Snsouch * notice, this list of conditions and the following disclaimer in the 1838774Snsouch * documentation and/or other materials provided with the distribution. 1938774Snsouch * 3. All advertising materials mentioning features or use of this software 2038774Snsouch * must display the following acknowledgement: 2138774Snsouch * This product includes software developed by the University of 2238774Snsouch * California, Berkeley and its contributors. 2338774Snsouch * 4. Neither the name of the University nor the names of its contributors 2438774Snsouch * may be used to endorse or promote products derived from this software 2538774Snsouch * without specific prior written permission. 2650477Speter * 2738774Snsouch * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2838774Snsouch * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2938774Snsouch * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 3038774Snsouch * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 3138774Snsouch * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3238774Snsouch * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3343301Sdillon * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3438774Snsouch * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3538774Snsouch * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3638774Snsouch * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3738774Snsouch * SUCH DAMAGE. 3838774Snsouch * 3938774Snsouch * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94 4038774Snsouch * $FreeBSD: head/sys/kern/kern_mib.c 57111 2000-02-10 05:32:03Z rwatson $ 4138774Snsouch */ 4238774Snsouch 4338774Snsouch#include <sys/param.h> 4438774Snsouch#include <sys/kernel.h> 4538774Snsouch#include <sys/systm.h> 4638774Snsouch#include <sys/sysctl.h> 4738774Snsouch#include <sys/proc.h> 4838774Snsouch#include <sys/jail.h> 4938774Snsouch 5038774Snsouch#if defined(SMP) 5138774Snsouch#include <machine/smp.h> 5238774Snsouch#endif 5338774Snsouch 5438774SnsouchSYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0, 5538774Snsouch "Sysctl internal magic"); 5638774SnsouchSYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW, 0, 5738774Snsouch "High kernel, proc, limits &c"); 5838774SnsouchSYSCTL_NODE(, CTL_VM, vm, CTLFLAG_RW, 0, 5938774Snsouch "Virtual memory"); 6038774SnsouchSYSCTL_NODE(, CTL_VFS, vfs, CTLFLAG_RW, 0, 6138774Snsouch "File system"); 6240782SnsouchSYSCTL_NODE(, CTL_NET, net, CTLFLAG_RW, 0, 6340782Snsouch "Network, (see socket.h)"); 6438774SnsouchSYSCTL_NODE(, CTL_DEBUG, debug, CTLFLAG_RW, 0, 6540782Snsouch "Debugging"); 6640782SnsouchSYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0, 6740782Snsouch "Sizeof various things"); 6840782SnsouchSYSCTL_NODE(, CTL_HW, hw, CTLFLAG_RW, 0, 6940782Snsouch "hardware"); 7040782SnsouchSYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0, 7138774Snsouch "machine dependent"); 7238774SnsouchSYSCTL_NODE(, CTL_USER, user, CTLFLAG_RW, 0, 7338774Snsouch "user-level"); 7438774SnsouchSYSCTL_NODE(, CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0, 7538774Snsouch "p1003_1b, (see p1003_1b.h)"); 7638774Snsouch 7738774SnsouchSYSCTL_NODE(, OID_AUTO, compat, CTLFLAG_RW, 0, 7838774Snsouch "Compatibility code"); 7938774Snsouch 8038774SnsouchSYSCTL_NODE(_kern, OID_AUTO, prison, CTLFLAG_RW, 0, 8138774Snsouch "Prison rules"); 8238774Snsouch 8338774SnsouchSYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD, 8438774Snsouch osrelease, 0, "Operating system type"); 8538774Snsouch 8638774SnsouchSYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD, 8738774Snsouch 0, BSD, "Operating system revision"); 8838774Snsouch 8938774SnsouchSYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD, 9038774Snsouch version, 0, "Kernel version"); 9138774Snsouch 9240782SnsouchSYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD, 9340782Snsouch ostype, 0, "Operating system type"); 9438774Snsouch 9538774Snsouchextern int osreldate; 9638774SnsouchSYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD, 9738774Snsouch &osreldate, 0, "Operating system release date"); 9838774Snsouch 9938774SnsouchSYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RD, 10038774Snsouch &maxproc, 0, "Maximum number of processes"); 10138774Snsouch 10238774SnsouchSYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW, 10338774Snsouch &maxprocperuid, 0, "Maximum processes allowed per userid"); 10438774Snsouch 10538774SnsouchSYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD, 10640782Snsouch 0, ARG_MAX, "Maximum bytes of argument to execve(2)"); 10740782Snsouch 10840782SnsouchSYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD, 10940782Snsouch 0, _KPOSIX_VERSION, "Version of POSIX attempting to comply to"); 11040782Snsouch 11138774SnsouchSYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD, 11242442Snsouch 0, NGROUPS_MAX, "Maximum number of groups a user can belong to"); 11342442Snsouch 11442442SnsouchSYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD, 11542442Snsouch 0, 1, "Whether job control is available"); 11643346Sroger 11742442Snsouch#ifdef _POSIX_SAVED_IDS 11842442SnsouchSYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 11942442Snsouch 0, 1, "Whether saved set-group/user ID is available"); 12043346Sroger#else 12143346SrogerSYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 12243346Sroger 0, 0, "Whether saved set-group/user ID is available"); 12343346Sroger#endif 12442442Snsouch 12538774Snsouchchar kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */ 12638774Snsouch 12738774SnsouchSYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW, 12838774Snsouch kernelname, sizeof kernelname, "Name of kernel file booted"); 12938774Snsouch 13038774Snsouch#ifdef SMP 131SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD, 132 &mp_ncpus, 0, "Number of active CPUs"); 133#else 134SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD, 135 0, 1, "Number of active CPUs"); 136#endif 137 138SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD, 139 0, BYTE_ORDER, "System byte order"); 140 141SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD, 142 0, PAGE_SIZE, "System memory page size"); 143 144static char machine_arch[] = MACHINE_ARCH; 145SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD, 146 machine_arch, 0, "System architecture"); 147 148static int jailcansethostname=1; 149SYSCTL_INT(_kern, KERN_JAILCANSETHOSTNAME, jailcansethostname, 150 CTLFLAG_RW, &jailcansethostname, 0, 151 "Jail can set its hostname"); 152 153char hostname[MAXHOSTNAMELEN]; 154 155static int 156sysctl_hostname SYSCTL_HANDLER_ARGS 157{ 158 int error; 159 160 if (req->p->p_prison) { 161 if (!jailcansethostname) 162 return(EPERM); 163 error = sysctl_handle_string(oidp, 164 req->p->p_prison->pr_host, 165 sizeof req->p->p_prison->pr_host, req); 166 } else 167 error = sysctl_handle_string(oidp, 168 hostname, sizeof hostname, req); 169 return (error); 170} 171 172SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, 173 CTLTYPE_STRING|CTLFLAG_RW|CTLFLAG_PRISON, 174 0, 0, sysctl_hostname, "A", "Hostname"); 175 176int securelevel = -1; 177 178static int 179sysctl_kern_securelvl SYSCTL_HANDLER_ARGS 180{ 181 int error, level; 182 183 level = securelevel; 184 error = sysctl_handle_int(oidp, &level, 0, req); 185 if (error || !req->newptr) 186 return (error); 187 if (level < securelevel) 188 return (EPERM); 189 securelevel = level; 190 return (error); 191} 192 193SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, CTLTYPE_INT|CTLFLAG_RW, 194 0, 0, sysctl_kern_securelvl, "I", "Current secure level"); 195 196char domainname[MAXHOSTNAMELEN]; 197SYSCTL_STRING(_kern, KERN_NISDOMAINNAME, domainname, CTLFLAG_RW, 198 &domainname, sizeof(domainname), "Name of the current YP/NIS domain"); 199 200long hostid; 201/* Some trouble here, if sizeof (int) != sizeof (long) */ 202SYSCTL_INT(_kern, KERN_HOSTID, hostid, CTLFLAG_RW, &hostid, 0, "Host ID"); 203 204/* 205 * This is really cheating. These actually live in the libc, something 206 * which I'm not quite sure is a good idea anyway, but in order for 207 * getnext and friends to actually work, we define dummies here. 208 */ 209SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD, 210 "", 0, "PATH that finds all the standard utilities"); 211SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD, 212 0, 0, "Max ibase/obase values in bc(1)"); 213SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD, 214 0, 0, "Max array size in bc(1)"); 215SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD, 216 0, 0, "Max scale value in bc(1)"); 217SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD, 218 0, 0, "Max string length in bc(1)"); 219SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD, 220 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry"); 221SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, ""); 222SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD, 223 0, 0, "Max length (bytes) of a text-processing utility's input line"); 224SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD, 225 0, 0, "Maximum number of repeats of a regexp permitted"); 226SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD, 227 0, 0, 228 "The version of POSIX 1003.2 with which the system attempts to comply"); 229SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD, 230 0, 0, "Whether C development supports the C bindings option"); 231SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD, 232 0, 0, "Whether system supports the C development utilities option"); 233SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD, 234 0, 0, ""); 235SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD, 236 0, 0, "Whether system supports FORTRAN development utilities"); 237SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD, 238 0, 0, "Whether system supports FORTRAN runtime utilities"); 239SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD, 240 0, 0, "Whether system supports creation of locales"); 241SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD, 242 0, 0, "Whether system supports software development utilities"); 243SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD, 244 0, 0, "Whether system supports the user portability utilities"); 245SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD, 246 0, 0, "Min Maximum number of streams a process may have open at one time"); 247SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD, 248 0, 0, "Min Maximum number of types supported for timezone names"); 249 250#include <sys/vnode.h> 251SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD, 252 0, sizeof(struct vnode), "sizeof(struct vnode)"); 253 254SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD, 255 0, sizeof(struct proc), "sizeof(struct proc)"); 256 257#include <sys/conf.h> 258SYSCTL_INT(_debug_sizeof, OID_AUTO, specinfo, CTLFLAG_RD, 259 0, sizeof(struct specinfo), "sizeof(struct specinfo)"); 260