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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94
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40 * $FreeBSD: head/sys/kern/kern_mib.c 57111 2000-02-10 05:32:03Z rwatson $
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40 * $FreeBSD: head/sys/kern/kern_mib.c 57119 2000-02-10 18:51:58Z rwatson $ |
41 */ 42 43#include <sys/param.h> 44#include <sys/kernel.h> 45#include <sys/systm.h> 46#include <sys/sysctl.h> 47#include <sys/proc.h> 48#include <sys/jail.h> 49 50#if defined(SMP) 51#include <machine/smp.h> 52#endif 53 54SYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0, 55 "Sysctl internal magic"); 56SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW, 0, 57 "High kernel, proc, limits &c"); 58SYSCTL_NODE(, CTL_VM, vm, CTLFLAG_RW, 0, 59 "Virtual memory"); 60SYSCTL_NODE(, CTL_VFS, vfs, CTLFLAG_RW, 0, 61 "File system"); 62SYSCTL_NODE(, CTL_NET, net, CTLFLAG_RW, 0, 63 "Network, (see socket.h)"); 64SYSCTL_NODE(, CTL_DEBUG, debug, CTLFLAG_RW, 0, 65 "Debugging"); 66SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0, 67 "Sizeof various things"); 68SYSCTL_NODE(, CTL_HW, hw, CTLFLAG_RW, 0, 69 "hardware"); 70SYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0, 71 "machine dependent"); 72SYSCTL_NODE(, CTL_USER, user, CTLFLAG_RW, 0, 73 "user-level"); 74SYSCTL_NODE(, CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0, 75 "p1003_1b, (see p1003_1b.h)"); 76 77SYSCTL_NODE(, OID_AUTO, compat, CTLFLAG_RW, 0, 78 "Compatibility code"); 79 80SYSCTL_NODE(_kern, OID_AUTO, prison, CTLFLAG_RW, 0, 81 "Prison rules"); 82 83SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD, 84 osrelease, 0, "Operating system type"); 85 86SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD, 87 0, BSD, "Operating system revision"); 88 89SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD, 90 version, 0, "Kernel version"); 91 92SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD, 93 ostype, 0, "Operating system type"); 94 95extern int osreldate; 96SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD, 97 &osreldate, 0, "Operating system release date"); 98 99SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RD, 100 &maxproc, 0, "Maximum number of processes"); 101 102SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW, 103 &maxprocperuid, 0, "Maximum processes allowed per userid"); 104 105SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD, 106 0, ARG_MAX, "Maximum bytes of argument to execve(2)"); 107 108SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD, 109 0, _KPOSIX_VERSION, "Version of POSIX attempting to comply to"); 110 111SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD, 112 0, NGROUPS_MAX, "Maximum number of groups a user can belong to"); 113 114SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD, 115 0, 1, "Whether job control is available"); 116 117#ifdef _POSIX_SAVED_IDS 118SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 119 0, 1, "Whether saved set-group/user ID is available"); 120#else 121SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 122 0, 0, "Whether saved set-group/user ID is available"); 123#endif 124 125char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */ 126 127SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW, 128 kernelname, sizeof kernelname, "Name of kernel file booted"); 129 130#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
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148static int jailcansethostname=1;
149SYSCTL_INT(_kern, KERN_JAILCANSETHOSTNAME, jailcansethostname,
150 CTLFLAG_RW, &jailcansethostname, 0,
151 "Jail can set its hostname");
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148static int prison_set_hostname_allowed = 1; 149SYSCTL_INT(_kern_prison, OID_AUTO, set_hostname_allowed, CTLFLAG_RW, 150 &prison_set_hostname_allowed, 0, 151 "Processes in prison can set their hostnames"); |
152 153char hostname[MAXHOSTNAMELEN]; 154 155static int 156sysctl_hostname SYSCTL_HANDLER_ARGS 157{ 158 int error; 159 160 if (req->p->p_prison) {
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161 if (!jailcansethostname)
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161 if (!prison_set_hostname_allowed) |
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)");
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