📄 sysctl.h
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/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Mike Karels at Berkeley Software Design, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)sysctl.h 8.1 (Berkeley) 6/2/93
* $\Id: sysctl.h,v 1.23.4.5 1996/09/19 08:19:00 pst Exp $
*/
#ifndef _SYS_SYSCTL_H_
#define _SYS_SYSCTL_H_
/*
* These are for the eproc structure defined below.
*/
#ifndef KERNEL
#include <sys/time.h>
#include <sys/ucred.h>
#include <sys/proc.h>
#include <vm/vm.h>
#endif
/*
* Definitions for sysctl call. The sysctl call uses a hierarchical name
* for objects that can be examined or modified. The name is expressed as
* a sequence of integers. Like a file path name, the meaning of each
* component depends on its place in the hierarchy. The top-level and kern
* identifiers are defined here, and other identifiers are defined in the
* respective subsystem header files.
*/
#define CTL_MAXNAME 12 /* largest number of components supported */
/*
* Each subsystem defined by sysctl defines a list of variables
* for that subsystem. Each name is either a node with further
* levels defined below it, or it is a leaf of some particular
* type given below. Each sysctl level defines a set of name/type
* pairs to be used by sysctl(1) in manipulating the subsystem.
*/
struct ctlname {
char *ctl_name; /* subsystem name */
int ctl_type; /* type of name */
};
#define CTLTYPE_NODE 1 /* name is a node */
#define CTLTYPE_INT 2 /* name describes an integer */
#define CTLTYPE_STRING 3 /* name describes a string */
#define CTLTYPE_QUAD 4 /* name describes a 64-bit number */
#define CTLTYPE_STRUCT 5 /* name describes a structure */
/*
* Top-level identifiers
*/
#define CTL_UNSPEC 0 /* unused */
#define CTL_KERN 1 /* "high kernel": proc, limits */
#define CTL_VM 2 /* virtual memory */
#define CTL_FS 3 /* file system, mount type is next */
#define CTL_NET 4 /* network, see socket.h */
#define CTL_DEBUG 5 /* debugging parameters */
#define CTL_HW 6 /* generic cpu/io */
#define CTL_MACHDEP 7 /* machine dependent */
#define CTL_USER 8 /* user-level */
#define CTL_MAXID 9 /* number of valid top-level ids */
#define CTL_NAMES { \
{ 0, 0 }, \
{ "kern", CTLTYPE_NODE }, \
{ "vm", CTLTYPE_NODE }, \
{ "fs", CTLTYPE_NODE }, \
{ "net", CTLTYPE_NODE }, \
{ "debug", CTLTYPE_NODE }, \
{ "hw", CTLTYPE_NODE }, \
{ "machdep", CTLTYPE_NODE }, \
{ "user", CTLTYPE_NODE }, \
}
/*
* CTL_KERN identifiers
*/
#define KERN_OSTYPE 1 /* string: system version */
#define KERN_OSRELEASE 2 /* string: system release */
#define KERN_OSREV 3 /* int: system revision */
#define KERN_VERSION 4 /* string: compile time info */
#define KERN_MAXVNODES 5 /* int: max vnodes */
#define KERN_MAXPROC 6 /* int: max processes */
#define KERN_MAXFILES 7 /* int: max open files */
#define KERN_ARGMAX 8 /* int: max arguments to exec */
#define KERN_SECURELVL 9 /* int: system security level */
#define KERN_HOSTNAME 10 /* string: hostname */
#define KERN_HOSTID 11 /* int: host identifier */
#define KERN_CLOCKRATE 12 /* struct: struct clockrate */
#define KERN_VNODE 13 /* struct: vnode structures */
#define KERN_PROC 14 /* struct: process entries */
#define KERN_FILE 15 /* struct: file entries */
#define KERN_PROF 16 /* node: kernel profiling info */
#define KERN_POSIX1 17 /* int: POSIX.1 version */
#define KERN_NGROUPS 18 /* int: # of supplemental group ids */
#define KERN_JOB_CONTROL 19 /* int: is job control available */
#define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
#define KERN_BOOTTIME 21 /* struct: time kernel was booted */
#define KERN_DOMAINNAME 22 /* string: YP domain name */
#define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
#define KERN_OSRELDATE 24 /* int: OS release date */
#define KERN_NTP_PLL 25 /* node: NTP PLL control */
#define KERN_BOOTFILE 26 /* string: name of booted kernel */
#define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
#define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
#define KERN_DUMPDEV 29 /* dev_t: device to dump on */
#define KERN_SOMAXCONN 30 /* int: max connections in listen q */
#define KERN_MAXSOCKBUF 31 /* int: max size of a socket buffer */
#define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
#define KERN_USRSTACK 33 /* int: address of USRSTACK */
#define KERN_SOCKBUF_WASTE 34 /* int: reserved sockbuf space */
#define KERN_SOMINQUEUE 35 /* int: override socket listen() */
#define KERN_MAXID 36 /* number of valid kern ids */
#define CTL_KERN_NAMES { \
{ 0, 0 }, \
{ "ostype", CTLTYPE_STRING }, \
{ "osrelease", CTLTYPE_STRING }, \
{ "osrevision", CTLTYPE_INT }, \
{ "version", CTLTYPE_STRING }, \
{ "maxvnodes", CTLTYPE_INT }, \
{ "maxproc", CTLTYPE_INT }, \
{ "maxfiles", CTLTYPE_INT }, \
{ "argmax", CTLTYPE_INT }, \
{ "securelevel", CTLTYPE_INT }, \
{ "hostname", CTLTYPE_STRING }, \
{ "hostid", CTLTYPE_INT }, \
{ "clockrate", CTLTYPE_STRUCT }, \
{ "vnode", CTLTYPE_STRUCT }, \
{ "proc", CTLTYPE_STRUCT }, \
{ "file", CTLTYPE_STRUCT }, \
{ "profiling", CTLTYPE_NODE }, \
{ "posix1version", CTLTYPE_INT }, \
{ "ngroups", CTLTYPE_INT }, \
{ "job_control", CTLTYPE_INT }, \
{ "saved_ids", CTLTYPE_INT }, \
{ "boottime", CTLTYPE_STRUCT }, \
{ "domainname", CTLTYPE_STRING }, \
{ "update", CTLTYPE_INT }, \
{ "osreldate", CTLTYPE_INT }, \
{ "ntp_pll", CTLTYPE_NODE }, \
{ "bootfile", CTLTYPE_STRING }, \
{ "maxfilesperproc", CTLTYPE_INT }, \
{ "maxprocperuid", CTLTYPE_INT }, \
{ "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \
{ "somaxconn", CTLTYPE_INT }, \
{ "maxsockbuf", CTLTYPE_INT }, \
{ "ps_strings", CTLTYPE_INT }, \
{ "usrstack", CTLTYPE_INT }, \
{ "sockbuf_waste_factor", CTLTYPE_INT }, \
{ "sominqueue", CTLTYPE_INT }, \
}
/*
* CTL_FS identifiers
*/
#define FS_VFSCONF 0 /* get configured filesystems */
#define FS_MAXID 1 /* number of items */
#define CTL_FS_NAMES { \
{ "vfsconf", CTLTYPE_STRUCT }, \
}
/*
* KERN_PROC subtypes
*/
#define KERN_PROC_ALL 0 /* everything */
#define KERN_PROC_PID 1 /* by process id */
#define KERN_PROC_PGRP 2 /* by process group id */
#define KERN_PROC_SESSION 3 /* by session of pid */
#define KERN_PROC_TTY 4 /* by controlling tty */
#define KERN_PROC_UID 5 /* by effective uid */
#define KERN_PROC_RUID 6 /* by real uid */
/*
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