kern_mib.c revision 78609
1219820Sjeff/*- 2219820Sjeff * Copyright (c) 1982, 1986, 1989, 1993 3219820Sjeff * The Regents of the University of California. All rights reserved. 4219820Sjeff * 5219820Sjeff * This code is derived from software contributed to Berkeley by 6219820Sjeff * Mike Karels at Berkeley Software Design, Inc. 7219820Sjeff * 8219820Sjeff * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD 9219820Sjeff * project, to make these variables more userfriendly. 10219820Sjeff * 11219820Sjeff * Redistribution and use in source and binary forms, with or without 12219820Sjeff * modification, are permitted provided that the following conditions 13219820Sjeff * are met: 14219820Sjeff * 1. Redistributions of source code must retain the above copyright 15219820Sjeff * notice, this list of conditions and the following disclaimer. 16219820Sjeff * 2. Redistributions in binary form must reproduce the above copyright 17219820Sjeff * notice, this list of conditions and the following disclaimer in the 18219820Sjeff * documentation and/or other materials provided with the distribution. 19219820Sjeff * 3. All advertising materials mentioning features or use of this software 20219820Sjeff * must display the following acknowledgement: 21219820Sjeff * This product includes software developed by the University of 22219820Sjeff * California, Berkeley and its contributors. 23219820Sjeff * 4. Neither the name of the University nor the names of its contributors 24219820Sjeff * may be used to endorse or promote products derived from this software 25219820Sjeff * without specific prior written permission. 26219820Sjeff * 27219820Sjeff * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28219820Sjeff * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29219820Sjeff * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30219820Sjeff * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31219820Sjeff * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32219820Sjeff * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33219820Sjeff * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34219820Sjeff * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35219820Sjeff * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36219820Sjeff * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37219820Sjeff * SUCH DAMAGE. 38219820Sjeff * 39219820Sjeff * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94 40219820Sjeff * $FreeBSD: head/sys/kern/kern_mib.c 78609 2001-06-22 16:03:14Z pirzyk $ 41219820Sjeff */ 42219820Sjeff 43219820Sjeff#include <sys/param.h> 44219820Sjeff#include <sys/kernel.h> 45219820Sjeff#include <sys/systm.h> 46219820Sjeff#include <sys/sysctl.h> 47219820Sjeff#include <sys/proc.h> 48219820Sjeff#include <sys/jail.h> 49219820Sjeff#include <sys/smp.h> 50219820Sjeff 51219820SjeffSYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0, 52219820Sjeff "Sysctl internal magic"); 53219820SjeffSYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW, 0, 54219820Sjeff "High kernel, proc, limits &c"); 55219820SjeffSYSCTL_NODE(, CTL_VM, vm, CTLFLAG_RW, 0, 56219820Sjeff "Virtual memory"); 57219820SjeffSYSCTL_NODE(, CTL_VFS, vfs, CTLFLAG_RW, 0, 58219820Sjeff "File system"); 59219820SjeffSYSCTL_NODE(, CTL_NET, net, CTLFLAG_RW, 0, 60219820Sjeff "Network, (see socket.h)"); 61219820SjeffSYSCTL_NODE(, CTL_DEBUG, debug, CTLFLAG_RW, 0, 62219820Sjeff "Debugging"); 63219820SjeffSYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0, 64219820Sjeff "Sizeof various things"); 65219820SjeffSYSCTL_NODE(, CTL_HW, hw, CTLFLAG_RW, 0, 66219820Sjeff "hardware"); 67219820SjeffSYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0, 68219820Sjeff "machine dependent"); 69219820SjeffSYSCTL_NODE(, CTL_USER, user, CTLFLAG_RW, 0, 70219820Sjeff "user-level"); 71219820SjeffSYSCTL_NODE(, CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0, 72219820Sjeff "p1003_1b, (see p1003_1b.h)"); 73219820Sjeff 74255932SalfredSYSCTL_NODE(, OID_AUTO, compat, CTLFLAG_RW, 0, 75255932Salfred "Compatibility code"); 76255932Salfred 77255932SalfredSYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD, 78255932Salfred osrelease, 0, "Operating system type"); 79255932Salfred 80219820SjeffSYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD, 81255932Salfred 0, BSD, "Operating system revision"); 82219820Sjeff 83219820SjeffSYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD, 84255932Salfred version, 0, "Kernel version"); 85219820Sjeff 86219820SjeffSYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD, 87219820Sjeff ostype, 0, "Operating system type"); 88219820Sjeff 89219820Sjeffextern int osreldate; 90219820SjeffSYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD, 91219820Sjeff &osreldate, 0, "Operating system release date"); 92219820Sjeff 93219820SjeffSYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RD, 94219820Sjeff &maxproc, 0, "Maximum number of processes"); 95219820Sjeff 96219820SjeffSYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW, 97219820Sjeff &maxprocperuid, 0, "Maximum processes allowed per userid"); 98219820Sjeff 99219820SjeffSYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD, 100219820Sjeff 0, ARG_MAX, "Maximum bytes of argument to execve(2)"); 101219820Sjeff 102219820SjeffSYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD, 103219820Sjeff 0, _KPOSIX_VERSION, "Version of POSIX attempting to comply to"); 104219820Sjeff 105219820SjeffSYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD, 106219820Sjeff 0, NGROUPS_MAX, "Maximum number of groups a user can belong to"); 107219820Sjeff 108219820SjeffSYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD, 109219820Sjeff 0, 1, "Whether job control is available"); 110219820Sjeff 111219820Sjeff#ifdef _POSIX_SAVED_IDS 112219820SjeffSYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 113219820Sjeff 0, 1, "Whether saved set-group/user ID is available"); 114219820Sjeff#else 115219820SjeffSYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 116219820Sjeff 0, 0, "Whether saved set-group/user ID is available"); 117219820Sjeff#endif 118219820Sjeff 119219820Sjeffchar kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */ 120219820Sjeff 121219820SjeffSYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW, 122219820Sjeff kernelname, sizeof kernelname, "Name of kernel file booted"); 123219820Sjeff 124219820Sjeff#ifdef SMP 125219820SjeffSYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD, 126219820Sjeff &mp_ncpus, 0, "Number of active CPUs"); 127#else 128SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD, 129 0, 1, "Number of active CPUs"); 130#endif 131 132SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD, 133 0, BYTE_ORDER, "System byte order"); 134 135SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD, 136 0, PAGE_SIZE, "System memory page size"); 137 138static char machine_arch[] = MACHINE_ARCH; 139SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD, 140 machine_arch, 0, "System architecture"); 141 142char hostname[MAXHOSTNAMELEN]; 143 144static int 145sysctl_hostname(SYSCTL_HANDLER_ARGS) 146{ 147 int error; 148 149 if (jailed(req->p->p_ucred)) { 150 if (!jail_set_hostname_allowed && req->newptr) 151 return(EPERM); 152 error = sysctl_handle_string(oidp, 153 req->p->p_ucred->cr_prison->pr_host, 154 sizeof req->p->p_ucred->cr_prison->pr_host, req); 155 } else 156 error = sysctl_handle_string(oidp, 157 hostname, sizeof hostname, req); 158 return (error); 159} 160 161SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, 162 CTLTYPE_STRING|CTLFLAG_RW|CTLFLAG_PRISON, 163 0, 0, sysctl_hostname, "A", "Hostname"); 164 165int securelevel = -1; 166 167static int 168sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS) 169{ 170 int error, level; 171 172 level = securelevel; 173 error = sysctl_handle_int(oidp, &level, 0, req); 174 if (error || !req->newptr) 175 return (error); 176 if (level < securelevel) 177 return (EPERM); 178 securelevel = level; 179 return (error); 180} 181 182SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, CTLTYPE_INT|CTLFLAG_RW, 183 0, 0, sysctl_kern_securelvl, "I", "Current secure level"); 184 185char domainname[MAXHOSTNAMELEN]; 186SYSCTL_STRING(_kern, KERN_NISDOMAINNAME, domainname, CTLFLAG_RW, 187 &domainname, sizeof(domainname), "Name of the current YP/NIS domain"); 188 189unsigned long hostid; 190SYSCTL_ULONG(_kern, KERN_HOSTID, hostid, CTLFLAG_RW, &hostid, 0, "Host ID"); 191 192/* 193 * This is really cheating. These actually live in the libc, something 194 * which I'm not quite sure is a good idea anyway, but in order for 195 * getnext and friends to actually work, we define dummies here. 196 */ 197SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD, 198 "", 0, "PATH that finds all the standard utilities"); 199SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD, 200 0, 0, "Max ibase/obase values in bc(1)"); 201SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD, 202 0, 0, "Max array size in bc(1)"); 203SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD, 204 0, 0, "Max scale value in bc(1)"); 205SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD, 206 0, 0, "Max string length in bc(1)"); 207SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD, 208 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry"); 209SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, ""); 210SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD, 211 0, 0, "Max length (bytes) of a text-processing utility's input line"); 212SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD, 213 0, 0, "Maximum number of repeats of a regexp permitted"); 214SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD, 215 0, 0, 216 "The version of POSIX 1003.2 with which the system attempts to comply"); 217SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD, 218 0, 0, "Whether C development supports the C bindings option"); 219SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD, 220 0, 0, "Whether system supports the C development utilities option"); 221SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD, 222 0, 0, ""); 223SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD, 224 0, 0, "Whether system supports FORTRAN development utilities"); 225SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD, 226 0, 0, "Whether system supports FORTRAN runtime utilities"); 227SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD, 228 0, 0, "Whether system supports creation of locales"); 229SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD, 230 0, 0, "Whether system supports software development utilities"); 231SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD, 232 0, 0, "Whether system supports the user portability utilities"); 233SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD, 234 0, 0, "Min Maximum number of streams a process may have open at one time"); 235SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD, 236 0, 0, "Min Maximum number of types supported for timezone names"); 237 238#include <sys/vnode.h> 239SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD, 240 0, sizeof(struct vnode), "sizeof(struct vnode)"); 241 242SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD, 243 0, sizeof(struct proc), "sizeof(struct proc)"); 244 245#include <sys/conf.h> 246SYSCTL_INT(_debug_sizeof, OID_AUTO, specinfo, CTLFLAG_RD, 247 0, sizeof(struct specinfo), "sizeof(struct specinfo)"); 248 249#include <sys/bio.h> 250#include <sys/buf.h> 251SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD, 252 0, sizeof(struct bio), "sizeof(struct bio)"); 253SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD, 254 0, sizeof(struct buf), "sizeof(struct buf)"); 255 256#include <sys/user.h> 257SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD, 258 0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)"); 259