sysctl.h

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/*	$NetBSD: sysctl.h,v 1.59 2000/11/20 01:46:56 simonb Exp $	*/

/*
 * 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
 */

#ifndef _SYS_SYSCTL_H_
#define	_SYS_SYSCTL_H_

/*
 * These are for the eproc structure defined below.
 */
#include <sys/time.h>
#include <sys/ucred.h>
#include <sys/proc.h>
#include <uvm/uvm_extern.h>

/*
 * 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 {
	const 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_VFS		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_DDB		9		/* in-kernel debugger */
#define	CTL_PROC	10		/* per-proc attr */
#define	CTL_MAXID	11		/* number of valid top-level ids */

#define	CTL_NAMES { \
	{ 0, 0 }, \
	{ "kern", CTLTYPE_NODE }, \
	{ "vm", CTLTYPE_NODE }, \
	{ "vfs", CTLTYPE_NODE }, \
	{ "net", CTLTYPE_NODE }, \
	{ "debug", CTLTYPE_NODE }, \
	{ "hw", CTLTYPE_NODE }, \
	{ "machdep", CTLTYPE_NODE }, \
	{ "user", CTLTYPE_NODE }, \
	{ "ddb", CTLTYPE_NODE }, \
	{ "proc", 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) domainname */
#define	KERN_MAXPARTITIONS	23	/* int: number of partitions/disk */
#define	KERN_RAWPARTITION	24	/* int: raw partition number */
#define	KERN_NTPTIME		25	/* struct: extended-precision time */
#define	KERN_TIMEX		26	/* struct: ntp timekeeping state */
#define	KERN_AUTONICETIME	27	/* int: proc time before autonice */
#define	KERN_AUTONICEVAL	28	/* int: auto nice value */
#define	KERN_RTC_OFFSET		29	/* int: offset of rtc from gmt */
#define	KERN_ROOT_DEVICE	30	/* string: root device */
#define	KERN_MSGBUFSIZE		31	/* int: max # of chars in msg buffer */
#define	KERN_FSYNC		32	/* int: file synchronization support */
#define	KERN_SYSVMSG		33	/* int: SysV message queue suppoprt */
#define	KERN_SYSVSEM		34	/* int: SysV semaphore support */
#define	KERN_SYSVSHM		35	/* int: SysV shared memory support */
#define	KERN_OLDSHORTCORENAME	36	/* old, unimplemented */
#define	KERN_SYNCHRONIZED_IO	37	/* int: POSIX synchronized I/O */
#define	KERN_IOV_MAX		38	/* int: max iovec's for readv(2) etc. */
#define	KERN_MBUF		39	/* node: mbuf parameters */
#define	KERN_MAPPED_FILES	40	/* int: POSIX memory mapped files */
#define	KERN_MEMLOCK		41	/* int: POSIX memory locking */
#define	KERN_MEMLOCK_RANGE	42	/* int: POSIX memory range locking */
#define	KERN_MEMORY_PROTECTION	43	/* int: POSIX memory protections */
#define	KERN_LOGIN_NAME_MAX	44	/* int: max length login name + NUL */
#define	KERN_DEFCORENAME	45	/* old: sort core name format */
#define	KERN_LOGSIGEXIT		46	/* int: log signalled processes */
#define	KERN_PROC2		47	/* struct: process entries */
#define	KERN_PROC_ARGS		48	/* struct: process argv/env */
#define	KERN_FSCALE		49	/* int: fixpt FSCALE */
#define	KERN_CCPU		50	/* int: fixpt ccpu */
#define	KERN_CP_TIME		51	/* struct: cpu time counters */
#define	KERN_SYSVIPC_INFO	52	/* number of valid kern ids */
#define	KERN_MSGBUF		53	/* kernel message buffer */
#define	KERN_CONSDEV		54	/* dev_t: console terminal device */
#define	KERN_MAXPTYS		55	/* int: maximum number of ptys */
#define	KERN_MAXID		57	/* 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 }, \
	{ "maxpartitions", CTLTYPE_INT }, \
	{ "rawpartition", CTLTYPE_INT }, \
	{ "ntptime", CTLTYPE_STRUCT }, \
	{ "timex", CTLTYPE_STRUCT }, \
	{ "autonicetime", CTLTYPE_INT }, \
	{ "autoniceval", CTLTYPE_INT }, \
	{ "rtc_offset", CTLTYPE_INT }, \
	{ "root_device", CTLTYPE_STRING }, \
	{ "msgbufsize", CTLTYPE_INT }, \
	{ "fsync", CTLTYPE_INT }, \
	{ "sysvmsg", CTLTYPE_INT }, \
	{ "sysvsem", CTLTYPE_INT }, \
	{ "sysvshm", CTLTYPE_INT }, \
	{ 0, 0 }, \
	{ "synchronized_io", CTLTYPE_INT }, \
	{ "iov_max", CTLTYPE_INT }, \
	{ "mbuf", CTLTYPE_NODE }, \
	{ "mapped_files", CTLTYPE_INT }, \
	{ "memlock", CTLTYPE_INT }, \
	{ "memlock_range", CTLTYPE_INT }, \
	{ "memory_protection", CTLTYPE_INT }, \
	{ "login_name_max", CTLTYPE_INT }, \
	{ "defcorename", CTLTYPE_STRING }, \
	{ "logsigexit", CTLTYPE_INT }, \
	{ "proc2", CTLTYPE_STRUCT }, \
	{ "proc_args", CTLTYPE_STRING }, \
	{ "fscale", CTLTYPE_INT }, \
	{ "ccpu", CTLTYPE_INT }, \
	{ "cp_time", CTLTYPE_STRUCT }, \
	{ "sysvipc_info", CTLTYPE_STRUCT }, \
	{ "msgbuf", CTLTYPE_STRUCT }, \
	{ "consdev", CTLTYPE_STRUCT }, \
	{ "maxptys", CTLTYPE_INT }, \
}

/*
 * 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 */
#define	KERN_PROC_GID		 7	/* by effective gid */
#define	KERN_PROC_RGID		 8	/* by real gid */

/*
 * KERN_PROC_TTY sub-subtypes
 */
#define	KERN_PROC_TTY_NODEV	NODEV		/* no controlling tty */
#define	KERN_PROC_TTY_REVOKE	((dev_t)-2)	/* revoked tty */

/*
 * KERN_PROC subtype ops return arrays of augmented proc structures:
 */
struct kinfo_proc {
	struct	proc kp_proc;			/* proc structure */
	struct	eproc {
		struct	proc *e_paddr;		/* address of proc */
		struct	session *e_sess;	/* session pointer */
		struct	pcred e_pcred;		/* process credentials */
		struct	ucred e_ucred;		/* current credentials */
		struct	vmspace e_vm;		/* address space */
		pid_t	e_ppid;			/* parent process id */
		pid_t	e_pgid;			/* process group id */
		short	e_jobc;			/* job control counter */
		dev_t	e_tdev;			/* controlling tty dev */
		pid_t	e_tpgid;		/* tty process group id */
		struct	session *e_tsess;	/* tty session pointer */
#define	WMESGLEN	8
		char	e_wmesg[WMESGLEN];	/* wchan message */
		segsz_t e_xsize;		/* text size */
		short	e_xrssize;		/* text rss */
		short	e_xccount;		/* text references */
		short	e_xswrss;
		long	e_flag;
#define	EPROC_CTTY	0x01	/* controlling tty vnode active */
#define	EPROC_SLEADER	0x02	/* session leader */
		char	e_login[MAXLOGNAME];	/* setlogin() name */
		pid_t	e_sid;			/* session id */
		long	e_spare[3];
	} kp_eproc;
};

/*
 * KERN_PROC2 subtype ops return arrays of relatively fixed size
 * structures of process info.   Use 8 byte alignment, and new
 * elements should only be added to the end of this structure so
 * binary compatibility can be preserved.
 */
#define	KI_NGROUPS	16
#define	KI_MAXCOMLEN	24	/* extra for 8 byte alignment */
#define	KI_WMESGLEN	8
#define	KI_MAXLOGNAME	24	/* extra for 8 byte alignment */

#define KI_NOCPU	(~(u_int64_t)0)

typedef struct {
	u_int32_t	__bits[4];
} ki_sigset_t;

struct kinfo_proc2 {
	u_int64_t p_forw;		/* PTR: linked run/sleep queue. */
	u_int64_t p_back;
	u_int64_t p_paddr;		/* PTR: address of proc */

	u_int64_t p_addr;		/* PTR: Kernel virtual addr of u-area */
	u_int64_t p_fd;			/* PTR: Ptr to open files structure. */
	u_int64_t p_cwdi;		/* PTR: cdir/rdir/cmask info */
	u_int64_t p_stats;		/* PTR: Accounting/statistics */
	u_int64_t p_limit;		/* PTR: Process limits. */
	u_int64_t p_vmspace;		/* PTR: Address space. */
	u_int64_t p_sigacts;		/* PTR: Signal actions, state */
	u_int64_t p_sess;		/* PTR: session pointer */
	u_int64_t p_tsess;		/* PTR: tty session pointer */
	u_int64_t p_ru;			/* PTR: Exit information. XXX */

	int32_t	p_eflag;		/* LONG: extra kinfo_proc2 flags */
	int32_t	p_exitsig;		/* INT: signal to sent to parent on exit */
	int32_t	p_flag;			/* INT: P_* flags. */

	int32_t	p_pid;			/* PID_T: Process identifier. */
	int32_t	p_ppid;			/* PID_T: Parent process id */
	int32_t	p_sid;			/* PID_T: session id */
	int32_t	p__pgid;		/* PID_T: process group id */
					/* XXX: <sys/proc.h> hijacks p_pgid */
	int32_t	p_tpgid;		/* PID_T: tty process group id */

	u_int32_t p_uid;		/* UID_T: effective user id */
	u_int32_t p_ruid;		/* UID_T: real user id */
	u_int32_t p_gid;		/* GID_T: effective group id */
	u_int32_t p_rgid;		/* GID_T: real group id */

	u_int32_t p_groups[KI_NGROUPS];	/* GID_T: groups */
	int16_t	p_ngroups;		/* SHORT: number of groups */

	int16_t	p_jobc;			/* SHORT: job control counter */
	u_int32_t p_tdev;		/* DEV_T: controlling tty dev */

	u_int32_t p_estcpu;		/* U_INT: Time averaged value of p_cpticks. */
	u_int32_t p_rtime_sec;		/* STRUCT TIMEVAL: Real time. */
	u_int32_t p_rtime_usec;		/* STRUCT TIMEVAL: Real time. */
	int32_t	p_cpticks;		/* INT: Ticks of cpu time. */
	u_int32_t p_pctcpu;		/* FIXPT_T: %cpu for this process during p_swtime */
	u_int32_t p_swtime;		/* U_INT: Time swapped in or out. */
	u_int32_t p_slptime;		/* U_INT: Time since last blocked. */