sysctl.h revision 2004
1/* 2 * Copyright (c) 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 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93 37 * $Id: sysctl.h,v 1.4 1994/08/08 15:41:08 wollman Exp $ 38 */ 39 40#ifndef _SYS_SYSCTL_H_ 41#define _SYS_SYSCTL_H_ 42 43/* 44 * These are for the eproc structure defined below. 45 */ 46#ifndef KERNEL 47#include <sys/time.h> 48#include <sys/ucred.h> 49#include <sys/proc.h> 50#include <vm/vm.h> 51#endif 52 53/* 54 * Definitions for sysctl call. The sysctl call uses a hierarchical name 55 * for objects that can be examined or modified. The name is expressed as 56 * a sequence of integers. Like a file path name, the meaning of each 57 * component depends on its place in the hierarchy. The top-level and kern 58 * identifiers are defined here, and other identifiers are defined in the 59 * respective subsystem header files. 60 */ 61 62#define CTL_MAXNAME 12 /* largest number of components supported */ 63 64/* 65 * Each subsystem defined by sysctl defines a list of variables 66 * for that subsystem. Each name is either a node with further 67 * levels defined below it, or it is a leaf of some particular 68 * type given below. Each sysctl level defines a set of name/type 69 * pairs to be used by sysctl(1) in manipulating the subsystem. 70 */ 71struct ctlname { 72 char *ctl_name; /* subsystem name */ 73 int ctl_type; /* type of name */ 74}; 75#define CTLTYPE_NODE 1 /* name is a node */ 76#define CTLTYPE_INT 2 /* name describes an integer */ 77#define CTLTYPE_STRING 3 /* name describes a string */ 78#define CTLTYPE_QUAD 4 /* name describes a 64-bit number */ 79#define CTLTYPE_STRUCT 5 /* name describes a structure */ 80 81/* 82 * Top-level identifiers 83 */ 84#define CTL_UNSPEC 0 /* unused */ 85#define CTL_KERN 1 /* "high kernel": proc, limits */ 86#define CTL_VM 2 /* virtual memory */ 87#define CTL_FS 3 /* file system, mount type is next */ 88#define CTL_NET 4 /* network, see socket.h */ 89#define CTL_DEBUG 5 /* debugging parameters */ 90#define CTL_HW 6 /* generic cpu/io */ 91#define CTL_MACHDEP 7 /* machine dependent */ 92#define CTL_USER 8 /* user-level */ 93#define CTL_MAXID 9 /* number of valid top-level ids */ 94 95#define CTL_NAMES { \ 96 { 0, 0 }, \ 97 { "kern", CTLTYPE_NODE }, \ 98 { "vm", CTLTYPE_NODE }, \ 99 { "fs", CTLTYPE_NODE }, \ 100 { "net", CTLTYPE_NODE }, \ 101 { "debug", CTLTYPE_NODE }, \ 102 { "hw", CTLTYPE_NODE }, \ 103 { "machdep", CTLTYPE_NODE }, \ 104 { "user", CTLTYPE_NODE }, \ 105} 106 107/* 108 * CTL_KERN identifiers 109 */ 110#define KERN_OSTYPE 1 /* string: system version */ 111#define KERN_OSRELEASE 2 /* string: system release */ 112#define KERN_OSREV 3 /* int: system revision */ 113#define KERN_VERSION 4 /* string: compile time info */ 114#define KERN_MAXVNODES 5 /* int: max vnodes */ 115#define KERN_MAXPROC 6 /* int: max processes */ 116#define KERN_MAXFILES 7 /* int: max open files */ 117#define KERN_ARGMAX 8 /* int: max arguments to exec */ 118#define KERN_SECURELVL 9 /* int: system security level */ 119#define KERN_HOSTNAME 10 /* string: hostname */ 120#define KERN_HOSTID 11 /* int: host identifier */ 121#define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 122#define KERN_VNODE 13 /* struct: vnode structures */ 123#define KERN_PROC 14 /* struct: process entries */ 124#define KERN_FILE 15 /* struct: file entries */ 125#define KERN_PROF 16 /* node: kernel profiling info */ 126#define KERN_POSIX1 17 /* int: POSIX.1 version */ 127#define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 128#define KERN_JOB_CONTROL 19 /* int: is job control available */ 129#define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 130#define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 131#define KERN_DOMAINNAME 22 /* string: YP domain name */ 132#define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 133#define KERN_OSRELDATE 24 /* int: OS release date */ 134#define KERN_MAXID 25 /* number of valid kern ids */ 135 136#define CTL_KERN_NAMES { \ 137 { 0, 0 }, \ 138 { "ostype", CTLTYPE_STRING }, \ 139 { "osrelease", CTLTYPE_STRING }, \ 140 { "osrevision", CTLTYPE_INT }, \ 141 { "version", CTLTYPE_STRING }, \ 142 { "maxvnodes", CTLTYPE_INT }, \ 143 { "maxproc", CTLTYPE_INT }, \ 144 { "maxfiles", CTLTYPE_INT }, \ 145 { "argmax", CTLTYPE_INT }, \ 146 { "securelevel", CTLTYPE_INT }, \ 147 { "hostname", CTLTYPE_STRING }, \ 148 { "hostid", CTLTYPE_INT }, \ 149 { "clockrate", CTLTYPE_STRUCT }, \ 150 { "vnode", CTLTYPE_STRUCT }, \ 151 { "proc", CTLTYPE_STRUCT }, \ 152 { "file", CTLTYPE_STRUCT }, \ 153 { "profiling", CTLTYPE_NODE }, \ 154 { "posix1version", CTLTYPE_INT }, \ 155 { "ngroups", CTLTYPE_INT }, \ 156 { "job_control", CTLTYPE_INT }, \ 157 { "saved_ids", CTLTYPE_INT }, \ 158 { "boottime", CTLTYPE_STRUCT }, \ 159 { "domainname", CTLTYPE_STRING }, \ 160 { "update", CTLTYPE_INT }, \ 161 { "osreldate", CTLTYPE_INT }, \ 162} 163 164/* 165 * KERN_PROC subtypes 166 */ 167#define KERN_PROC_ALL 0 /* everything */ 168#define KERN_PROC_PID 1 /* by process id */ 169#define KERN_PROC_PGRP 2 /* by process group id */ 170#define KERN_PROC_SESSION 3 /* by session of pid */ 171#define KERN_PROC_TTY 4 /* by controlling tty */ 172#define KERN_PROC_UID 5 /* by effective uid */ 173#define KERN_PROC_RUID 6 /* by real uid */ 174 175/* 176 * KERN_PROC subtype ops return arrays of augmented proc structures: 177 */ 178struct kinfo_proc { 179 struct proc kp_proc; /* proc structure */ 180 struct eproc { 181 struct proc *e_paddr; /* address of proc */ 182 struct session *e_sess; /* session pointer */ 183 struct pcred e_pcred; /* process credentials */ 184 struct ucred e_ucred; /* current credentials */ 185#ifdef sparc 186 struct { 187 segsz_t vm_rssize; /* resident set size */ 188 segsz_t vm_tsize; /* text size */ 189 segsz_t vm_dsize; /* data size */ 190 segsz_t vm_ssize; /* stack size */ 191 } e_vm; 192#else 193 struct vmspace e_vm; /* address space */ 194#endif 195 pid_t e_ppid; /* parent process id */ 196 pid_t e_pgid; /* process group id */ 197 short e_jobc; /* job control counter */ 198 dev_t e_tdev; /* controlling tty dev */ 199 pid_t e_tpgid; /* tty process group id */ 200 struct session *e_tsess; /* tty session pointer */ 201#define WMESGLEN 7 202 char e_wmesg[WMESGLEN+1]; /* wchan message */ 203 segsz_t e_xsize; /* text size */ 204 short e_xrssize; /* text rss */ 205 short e_xccount; /* text references */ 206 short e_xswrss; 207 long e_flag; 208#define EPROC_CTTY 0x01 /* controlling tty vnode active */ 209#define EPROC_SLEADER 0x02 /* session leader */ 210 char e_login[MAXLOGNAME]; /* setlogin() name */ 211 long e_spare[4]; 212 } kp_eproc; 213}; 214 215/* 216 * CTL_HW identifiers 217 */ 218#define HW_MACHINE 1 /* string: machine class */ 219#define HW_MODEL 2 /* string: specific machine model */ 220#define HW_NCPU 3 /* int: number of cpus */ 221#define HW_BYTEORDER 4 /* int: machine byte order */ 222#define HW_PHYSMEM 5 /* int: total memory */ 223#define HW_USERMEM 6 /* int: non-kernel memory */ 224#define HW_PAGESIZE 7 /* int: software page size */ 225#define HW_DISKNAMES 8 /* strings: disk drive names */ 226#define HW_DISKSTATS 9 /* struct: diskstats[] */ 227#define HW_MAXID 10 /* number of valid hw ids */ 228 229#define CTL_HW_NAMES { \ 230 { 0, 0 }, \ 231 { "machine", CTLTYPE_STRING }, \ 232 { "model", CTLTYPE_STRING }, \ 233 { "ncpu", CTLTYPE_INT }, \ 234 { "byteorder", CTLTYPE_INT }, \ 235 { "physmem", CTLTYPE_INT }, \ 236 { "usermem", CTLTYPE_INT }, \ 237 { "pagesize", CTLTYPE_INT }, \ 238 { "disknames", CTLTYPE_STRUCT }, \ 239 { "diskstats", CTLTYPE_STRUCT }, \ 240} 241 242/* 243 * CTL_USER definitions 244 */ 245#define USER_CS_PATH 1 /* string: _CS_PATH */ 246#define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 247#define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 248#define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 249#define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 250#define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 251#define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 252#define USER_LINE_MAX 8 /* int: LINE_MAX */ 253#define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 254#define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 255#define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 256#define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 257#define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 258#define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 259#define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 260#define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 261#define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 262#define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 263#define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 264#define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 265#define USER_MAXID 21 /* number of valid user ids */ 266 267#define CTL_USER_NAMES { \ 268 { 0, 0 }, \ 269 { "cs_path", CTLTYPE_STRING }, \ 270 { "bc_base_max", CTLTYPE_INT }, \ 271 { "bc_dim_max", CTLTYPE_INT }, \ 272 { "bc_scale_max", CTLTYPE_INT }, \ 273 { "bc_string_max", CTLTYPE_INT }, \ 274 { "coll_weights_max", CTLTYPE_INT }, \ 275 { "expr_nest_max", CTLTYPE_INT }, \ 276 { "line_max", CTLTYPE_INT }, \ 277 { "re_dup_max", CTLTYPE_INT }, \ 278 { "posix2_version", CTLTYPE_INT }, \ 279 { "posix2_c_bind", CTLTYPE_INT }, \ 280 { "posix2_c_dev", CTLTYPE_INT }, \ 281 { "posix2_char_term", CTLTYPE_INT }, \ 282 { "posix2_fort_dev", CTLTYPE_INT }, \ 283 { "posix2_fort_run", CTLTYPE_INT }, \ 284 { "posix2_localedef", CTLTYPE_INT }, \ 285 { "posix2_sw_dev", CTLTYPE_INT }, \ 286 { "posix2_upe", CTLTYPE_INT }, \ 287 { "stream_max", CTLTYPE_INT }, \ 288 { "tzname_max", CTLTYPE_INT }, \ 289} 290 291/* 292 * CTL_DEBUG definitions 293 * 294 * Second level identifier specifies which debug variable. 295 * Third level identifier specifies which stucture component. 296 */ 297#define CTL_DEBUG_NAME 0 /* string: variable name */ 298#define CTL_DEBUG_VALUE 1 /* int: variable value */ 299#define CTL_DEBUG_MAXID 20 300 301#ifdef KERNEL 302#ifdef DEBUG 303/* 304 * CTL_DEBUG variables. 305 * 306 * These are declared as separate variables so that they can be 307 * individually initialized at the location of their associated 308 * variable. The loader prevents multiple use by issuing errors 309 * if a variable is initialized in more than one place. They are 310 * aggregated into an array in debug_sysctl(), so that it can 311 * conveniently locate them when querried. If more debugging 312 * variables are added, they must also be declared here and also 313 * entered into the array. 314 */ 315struct ctldebug { 316 char *debugname; /* name of debugging variable */ 317 int *debugvar; /* pointer to debugging variable */ 318}; 319extern struct ctldebug debug0, debug1, debug2, debug3, debug4; 320extern struct ctldebug debug5, debug6, debug7, debug8, debug9; 321extern struct ctldebug debug10, debug11, debug12, debug13, debug14; 322extern struct ctldebug debug15, debug16, debug17, debug18, debug19; 323#endif /* DEBUG */ 324 325/* 326 * Internal sysctl function calling convention: 327 * 328 * (*sysctlfn)(name, namelen, oldval, oldlenp, newval, newlen); 329 * 330 * The name parameter points at the next component of the name to be 331 * interpreted. The namelen parameter is the number of integers in 332 * the name. 333 */ 334typedef int (sysctlfn) 335 __P((int *, u_int, void *, size_t *, void *, size_t, struct proc *)); 336 337int sysctl_int __P((void *, size_t *, void *, size_t, int *)); 338int sysctl_rdint __P((void *, size_t *, void *, int)); 339int sysctl_string __P((void *, size_t *, void *, size_t, char *, int)); 340int sysctl_rdstring __P((void *, size_t *, void *, char *)); 341int sysctl_rdstruct __P((void *, size_t *, void *, void *, int)); 342void fill_eproc __P((struct proc *, struct eproc *)); 343 344#else /* !KERNEL */ 345#include <sys/cdefs.h> 346 347__BEGIN_DECLS 348int sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 349__END_DECLS 350#endif /* KERNEL */ 351#endif /* !_SYS_SYSCTL_H_ */ 352