[unix-history] / usr / src / usr.sbin / sysctl / sysctl.c

/*
 * Copyright (c) 1993 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1993 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)sysctl.c	5.11 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/gmon.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#include <vm/vm_param.h>

#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#include <netinet/icmp_var.h>
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct ctlname topname[] = CTL_NAMES;
struct ctlname kernname[] = CTL_KERN_NAMES;
struct ctlname vmname[] = CTL_VM_NAMES;
struct ctlname netname[] = CTL_NET_NAMES;
struct ctlname hwname[] = CTL_HW_NAMES;
struct ctlname username[] = CTL_USER_NAMES;
struct ctlname debugname[CTL_DEBUG_MAXID];
char names[BUFSIZ];

struct list {
	struct	ctlname *list;
	int	size;
};
struct list toplist = { topname, CTL_MAXID };
struct list secondlevel[] = {
	{ 0, 0 },			/* CTL_UNSPEC */
	{ kernname, KERN_MAXID },	/* CTL_KERN */
	{ vmname, VM_MAXID },		/* CTL_VM */
	{ 0, 0 },			/* CTL_FS */
	{ netname, NET_MAXID },		/* CTL_NET */
	{ 0, CTL_DEBUG_MAXID },		/* CTL_DEBUG */
	{ hwname, HW_MAXID },		/* CTL_HW */
	{ 0, 0 },			/* CTL_MACHDEP */
	{ username, USER_MAXID },	/* CTL_USER_NAMES */
};

int	Aflag, aflag, nflag, wflag;

int
main(argc, argv)
	int argc;
	char *argv[];
{
	extern char *optarg;
	extern int optind;
	int ch, lvl1;

	while ((ch = getopt(argc, argv, "Aanw")) != EOF) {
		switch (ch) {

		case 'A':
			Aflag = 1;
			break;

		case 'a':
			aflag = 1;
			break;

		case 'n':
			nflag = 1;
			break;

		case 'w':
			wflag = 1;
			break;

		default:
			usage();
		}
	}
	argc -= optind;
	argv += optind;

	if (Aflag || aflag) {
		debuginit();
		for (lvl1 = 1; lvl1 < CTL_MAXID; lvl1++)
			listall(topname[lvl1].ctl_name, &secondlevel[lvl1]);
		exit(0);
	}
	if (argc == 0)
		usage();
	while (argc-- > 0)
		parse(*argv, 1);
	exit(0);
}

/*
 * List all variables known to the system.
 */
listall(prefix, lp)
	char *prefix;
	struct list *lp;
{
	int lvl2;
	char *cp, name[BUFSIZ];

	if (lp->list == 0)
		return;
	strcpy(name, prefix);
	cp = &name[strlen(name)];
	*cp++ = '.';
	for (lvl2 = 0; lvl2 < lp->size; lvl2++) {
		if (lp->list[lvl2].ctl_name == 0)
			continue;
		strcpy(cp, lp->list[lvl2].ctl_name);
		parse(name, Aflag);
	}
}

/*
 * Parse a name into a MIB entry.
 * Lookup and print out the MIB entry if it exists.
 * Set a new value if requested.
 */
parse(string, flags)
	char *string;
	int flags;
{
	int indx, type, state, size, len;
	int isclockrate = 0;
	int isboottime = 0;
	void *newval = 0;
	int intval, newsize = 0;
	quad_t quadval;
	struct list *lp;
	int mib[CTL_MAXNAME];
	char *cp, *bufp, buf[BUFSIZ], strval[BUFSIZ];

	bufp = buf;
	snprintf(buf, BUFSIZ, "%s", string);
	if ((cp = strchr(string, '=')) != NULL) {
		if (!wflag) {
			fprintf(stderr, "Must specify -w to set variables\n");
			exit(2);
		}
		*strchr(buf, '=') = '\0';
		*cp++ = '\0';
		while (isspace(*cp))
			cp++;
		newval = cp;
		newsize = strlen(cp);
	}
	if ((indx = findname(string, "top", &bufp, &toplist)) == -1)
		return;
	mib[0] = indx;
	if (indx == CTL_DEBUG)
		debuginit();
	lp = &secondlevel[indx];
	if (lp->list == 0) {
		fprintf(stderr, "%s: class is not implemented\n",
		    topname[indx]);
		return;
	}
	if (bufp == NULL) {
		listall(topname[indx].ctl_name, lp);
		return;
	}
	if ((indx = findname(string, "second", &bufp, lp)) == -1)
		return;
	mib[1] = indx;
	type = lp->list[indx].ctl_type;
	len = 2;
	switch (mib[0]) {

	case CTL_KERN:
		switch (mib[1]) {
		case KERN_PROF:
			mib[2] = GPROF_STATE;
			size = sizeof state;
			if (sysctl(mib, 3, &state, &size, NULL, 0) < 0) {
				if (flags == 0)
					return;
				if (!nflag)
					fprintf(stdout, "%s: ", string);
				fprintf(stderr,
				    "kernel is not compiled for profiling\n");
				return;
			}
			if (!nflag)
				fprintf(stdout, "%s: %s\n", string,
				    state == GMON_PROF_OFF ? "off" : "running");
			return;
		case KERN_VNODE:
		case KERN_FILE:
			if (flags == 0)
				return;
			fprintf(stderr,
			    "Use pstat to view %s information\n", string);
			return;
		case KERN_PROC:
			if (flags == 0)
				return;
			fprintf(stderr,
			    "Use ps to view %s information\n", string);
			return;
		case KERN_CLOCKRATE:
			isclockrate = 1;
			break;
		case KERN_BOOTTIME:
			isboottime = 1;
			break;
		}
		break;

	case CTL_HW:
		break;

	case CTL_VM:
		if (mib[1] == VM_LOADAVG) {
			double loads[3];

			getloadavg(loads, 3);
			if (!nflag)
				fprintf(stdout, "%s: ", string);
			fprintf(stdout, "%.2f %.2f %.2f\n", 
			    loads[0], loads[1], loads[2]);
			return;
		}
		if (flags == 0)
			return;
		fprintf(stderr,
		    "Use vmstat or systat to view %s information\n", string);
		return;

	case CTL_NET:
		if (mib[1] == PF_INET) {
			len = sysctl_inet(string, &bufp, mib, flags, &type);
			if (len >= 0)
				break;
			return;
		}
		if (flags == 0)
			return;
		fprintf(stderr, "Use netstat to view %s information\n", string);
		return;

	case CTL_DEBUG:
		mib[2] = CTL_DEBUG_VALUE;
		len = 3;
		break;

	case CTL_FS:
	case CTL_MACHDEP:
	case CTL_USER:
		break;

	default:
		fprintf(stderr, "Illegal top level value: %d\n", mib[0]);
		return;
	
	}
	if (bufp) {
		fprintf(stderr, "name %s in %s is unknown\n", *bufp, string);
		return;
	}
	if (newsize > 0) {
		switch (type) {
		case CTLTYPE_INT:
			intval = atoi(newval);
			newval = &intval;
			newsize = sizeof intval;
			break;

		case CTLTYPE_QUAD:
			sscanf(newval, "%qd", &quadval);
			newval = &quadval;
			newsize = sizeof quadval;
			break;
		}
	}
	size = BUFSIZ;
	if (sysctl(mib, len, buf, &size, newsize ? newval : 0, newsize) == -1) {
		if (flags == 0)
			return;
		switch (errno) {
		case EOPNOTSUPP:
			fprintf(stderr, "%s: value is not available\n", string);
			return;
		case ENOTDIR:
			fprintf(stderr, "%s: specification is incomplete\n",
			    string);
			return;
		case ENOMEM:
			fprintf(stderr, "%s: type is unknown to this program\n",
			    string);
			return;
		default:
			perror(string);
			return;
		}
	}
	if (isclockrate) {
		struct clockinfo *clkp = (struct clockinfo *)buf;

		if (!nflag)
			fprintf(stdout, "%s: ", string);
		fprintf(stdout,
		    "hz = %d, tick = %d, profhz = %d, stathz = %d\n",
		    clkp->hz, clkp->tick, clkp->profhz, clkp->stathz);
		return;
	}
	if (isboottime) {
		struct timeval *btp = (struct timeval *)buf;

		if (!nflag)
			fprintf(stdout, "%s = %s\n", string,
			    ctime(&btp->tv_sec));
		else
			fprintf(stdout, "%d\n", btp->tv_sec);
		return;
	}
	switch (type) {
	case CTLTYPE_INT:
		if (newsize == 0) {
			if (!nflag)
				fprintf(stdout, "%s = ", string);
			fprintf(stdout, "%d\n", *(int *)buf);
		} else {
			if (!nflag)
				fprintf(stdout, "%s: %d -> ", string,
				    *(int *)buf);
			fprintf(stdout, "%d\n", *(int *)newval);
		}
		return;

	case CTLTYPE_STRING:
		if (newsize == 0) {
			if (!nflag)
				fprintf(stdout, "%s = ", string);
			fprintf(stdout, "%s\n", buf);
		} else {
			if (!nflag)
				fprintf(stdout, "%s: %s -> ", string, buf);
			fprintf(stdout, "%s\n", newval);
		}
		return;

	case CTLTYPE_QUAD:
		if (newsize == 0) {
			if (!nflag)
				fprintf(stdout, "%s = ", string);
			fprintf(stdout, "%qd\n", *(quad_t *)buf);
		} else {
			if (!nflag)
				fprintf(stdout, "%s: %qd -> ", string,
				    *(quad_t *)buf);
			fprintf(stdout, "%qd\n", *(quad_t *)newval);
		}
		return;

	case CTLTYPE_STRUCT:
		fprintf(stderr, "%s: unknown structure returned\n",
		    string);
		return;

	default:
	case CTLTYPE_NODE:
		fprintf(stderr, "%s: unknown type returned\n",
		    string);
		return;
	}
}

/*
 * Initialize the set of debugging names
 */
debuginit()
{
	int mib[3], size, loc, i;

	if (secondlevel[CTL_DEBUG].list != 0)
		return;
	secondlevel[CTL_DEBUG].list = debugname;
	mib[0] = CTL_DEBUG;
	mib[2] = CTL_DEBUG_NAME;
	for (loc = 0, i = 0; i < CTL_DEBUG_MAXID; i++) {
		mib[1] = i;
		size = BUFSIZ - loc;
		if (sysctl(mib, 3, &names[loc], &size, NULL, 0) == -1)
			continue;
		debugname[i].ctl_name = &names[loc];
		debugname[i].ctl_type = CTLTYPE_INT;
		loc += size;
	}
}

struct ctlname inetname[] = CTL_IPPROTO_NAMES;
struct ctlname ipname[] = IPCTL_NAMES;
struct ctlname icmpname[] = ICMPCTL_NAMES;
struct ctlname udpname[] = UDPCTL_NAMES;
struct list inetlist = { inetname, IPPROTO_MAXID };
struct list inetvars[] = {
	{ ipname, IPCTL_MAXID },	/* ip */
	{ icmpname, ICMPCTL_MAXID },	/* icmp */
	{ 0, 0 },			/* igmp */
	{ 0, 0 },			/* ggmp */
	{ 0, 0 },
	{ 0, 0 },
	{ 0, 0 },			/* tcp */
	{ 0, 0 },
	{ 0, 0 },			/* egp */
	{ 0, 0 },
	{ 0, 0 },
	{ 0, 0 },
	{ 0, 0 },			/* pup */
	{ 0, 0 },
	{ 0, 0 },
	{ 0, 0 },
	{ 0, 0 },
	{ udpname, UDPCTL_MAXID },	/* udp */
};

/*
 * handle internet requests
 */
sysctl_inet(string, bufpp, mib, flags, typep)
	char *string;
	char **bufpp;
	int mib[];
	int flags;
	int *typep;
{
	struct list *lp;
	int indx;

	if (*bufpp == NULL) {
		listall(string, &inetlist);
		return (-1);
	}
	if ((indx = findname(string, "third", bufpp, &inetlist)) == -1)
		return (-1);
	mib[2] = indx;
	if (indx <= IPPROTO_UDP && inetvars[indx].list != NULL)
		lp = &inetvars[indx];
	else if (!flags)
		return (-1);
	else {
		fprintf(stderr, "%s: no variables defined for this protocol\n",
		    string);
		return (-1);
	}
	if (*bufpp == NULL) {
		listall(string, lp);
		return (-1);
	}
	if ((indx = findname(string, "fourth", bufpp, lp)) == -1)
		return (-1);
	mib[3] = indx;
	*typep = lp->list[indx].ctl_type;
	return (4);
}

/*
 * Scan a list of names searching for a particular name.
 */
findname(string, level, bufp, namelist)
	char *string;
	char *level;
	char **bufp;
	struct list *namelist;
{
	char *name;
	int i;

	if (namelist->list == 0 || (name = strsep(bufp, ".")) == NULL) {
		fprintf(stderr, "%s: incomplete specification\n", string);
		return (-1);
	}
	for (i = 0; i < namelist->size; i++)
		if (namelist->list[i].ctl_name != NULL &&
		    strcmp(name, namelist->list[i].ctl_name) == 0)
			break;
	if (i == namelist->size) {
		fprintf(stderr, "%s level name %s in %s is invalid\n",
		    level, name, string);
		return (-1);
	}
	return (i);
}

usage()
{

	(void)fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n\t%s\n",
	    "sysctl [-n] variable ...", "sysctl [-n] -w variable=value ...",
	    "sysctl [-n] -a", "sysctl [-n] -A");
	exit(1);
}
Commit	Line	Data
33a39b1e KM	1	/*
	2	* Copyright (c) 1993 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* %sccs.include.redist.c%
	6	*/
	7
	8	#ifndef lint
	9	char copyright[] =
	10	"@(#) Copyright (c) 1993 The Regents of the University of California.\n\
	11	All rights reserved.\n";
	12	#endif /* not lint */
	13
	14	#ifndef lint
3c56a5f8	15	static char sccsid[] = "@(#)sysctl.c 5.11 (Berkeley) %G%";
33a39b1e KM	16	#endif /* not lint */
33a39b1e KM	17
3a9dd945	18	#include <sys/param.h>
629efb73	19	#include <sys/gmon.h>
33a39b1e KM	20	#include <sys/stat.h>
	21	#include <sys/sysctl.h>
	22	#include <sys/socket.h>
	23	#include <vm/vm_param.h>
3a9dd945	24
129fa670 KM	25	#include <netinet/in.h>
	26	#include <netinet/in_systm.h>
	27	#include <netinet/ip.h>
	28	#include <netinet/ip_icmp.h>
	29	#include <netinet/icmp_var.h>
5082da2b KM	30	#include <netinet/ip_var.h>
	31	#include <netinet/udp.h>
	32	#include <netinet/udp_var.h>
3a9dd945	33
33a39b1e	34	#include <errno.h>
3a9dd945	35	#include <stdio.h>
33a39b1e KM	36	#include <stdlib.h>
33a39b1e KM	37	#include <string.h>
33a39b1e	38
129fa670 KM	39	struct ctlname topname[] = CTL_NAMES;
	40	struct ctlname kernname[] = CTL_KERN_NAMES;
	41	struct ctlname vmname[] = CTL_VM_NAMES;
	42	struct ctlname netname[] = CTL_NET_NAMES;
	43	struct ctlname hwname[] = CTL_HW_NAMES;
759ce31c	44	struct ctlname username[] = CTL_USER_NAMES;
1fdacbde KM	45	struct ctlname debugname[CTL_DEBUG_MAXID];
1fdacbde KM	46	char names[BUFSIZ];
33a39b1e KM	47
33a39b1e KM	48	struct list {
129fa670	49	struct ctlname *list;
33a39b1e	50	int size;
129fa670 KM	51	};
	52	struct list toplist = { topname, CTL_MAXID };
	53	struct list secondlevel[] = {
33a39b1e KM	54	{ 0, 0 }, /* CTL_UNSPEC */
	55	{ kernname, KERN_MAXID }, /* CTL_KERN */
	56	{ vmname, VM_MAXID }, /* CTL_VM */
	57	{ 0, 0 }, /* CTL_FS */
	58	{ netname, NET_MAXID }, /* CTL_NET */
1fdacbde	59	{ 0, CTL_DEBUG_MAXID }, /* CTL_DEBUG */
33a39b1e KM	60	{ hwname, HW_MAXID }, /* CTL_HW */
33a39b1e KM	61	{ 0, 0 }, /* CTL_MACHDEP */
759ce31c	62	{ username, USER_MAXID }, /* CTL_USER_NAMES */
33a39b1e KM	63	};
33a39b1e KM	64
18ca9a3c	65	int Aflag, aflag, nflag, wflag;
33a39b1e KM	66
	67	int
	68	main(argc, argv)
	69	int argc;
	70	char *argv[];
	71	{
	72	extern char *optarg;
	73	extern int optind;
18ca9a3c	74	int ch, lvl1;
33a39b1e	75
18ca9a3c	76	while ((ch = getopt(argc, argv, "Aanw")) != EOF) {
33a39b1e KM	77	switch (ch) {
	78
	79	case 'A':
	80	Aflag = 1;
	81	break;
	82
	83	case 'a':
	84	aflag = 1;
	85	break;
	86
18ca9a3c KM	87	case 'n':
	88	nflag = 1;
	89	break;
	90
33a39b1e KM	91	case 'w':
	92	wflag = 1;
	93	break;
	94
	95	default:
	96	usage();
	97	}
	98	}
	99	argc -= optind;
	100	argv += optind;
	101
	102	if (Aflag \|\| aflag) {
1fdacbde	103	debuginit();
18ca9a3c	104	for (lvl1 = 1; lvl1 < CTL_MAXID; lvl1++)
129fa670	105	listall(topname[lvl1].ctl_name, &secondlevel[lvl1]);
33a39b1e KM	106	exit(0);
	107	}
	108	if (argc == 0)
	109	usage();
	110	while (argc-- > 0)
	111	parse(*argv, 1);
	112	exit(0);
	113	}
	114
	115	/*
	116	* List all variables known to the system.
	117	*/
129fa670 KM	118	listall(prefix, lp)
129fa670 KM	119	char *prefix;
33a39b1e	120	struct list *lp;
129fa670	121	{
18ca9a3c	122	int lvl2;
33a39b1e KM	123	char *cp, name[BUFSIZ];
33a39b1e KM	124
18ca9a3c KM	125	if (lp->list == 0)
18ca9a3c KM	126	return;
129fa670	127	strcpy(name, prefix);
18ca9a3c KM	128	cp = &name[strlen(name)];
18ca9a3c KM	129	*cp++ = '.';
129fa670 KM	130	for (lvl2 = 0; lvl2 < lp->size; lvl2++) {
	131	if (lp->list[lvl2].ctl_name == 0)
	132	continue;
	133	strcpy(cp, lp->list[lvl2].ctl_name);
18ca9a3c	134	parse(name, Aflag);
33a39b1e KM	135	}
	136	}
	137
	138	/*
	139	* Parse a name into a MIB entry.
	140	* Lookup and print out the MIB entry if it exists.
	141	* Set a new value if requested.
	142	*/
	143	parse(string, flags)
	144	char *string;
	145	int flags;
	146	{
629efb73	147	int indx, type, state, size, len;
33a39b1e	148	int isclockrate = 0;
3c56a5f8	149	int isboottime = 0;
33a39b1e KM	150	void *newval = 0;
33a39b1e KM	151	int intval, newsize = 0;
129fa670 KM	152	quad_t quadval;
129fa670 KM	153	struct list *lp;
33a39b1e KM	154	int mib[CTL_MAXNAME];
	155	char cp, bufp, buf[BUFSIZ], strval[BUFSIZ];
	156
	157	bufp = buf;
	158	snprintf(buf, BUFSIZ, "%s", string);
	159	if ((cp = strchr(string, '=')) != NULL) {
	160	if (!wflag) {
	161	fprintf(stderr, "Must specify -w to set variables\n");
	162	exit(2);
	163	}
	164	*strchr(buf, '=') = '\0';
	165	*cp++ = '\0';
	166	while (isspace(*cp))
	167	cp++;
129fa670 KM	168	newval = cp;
129fa670 KM	169	newsize = strlen(cp);
33a39b1e	170	}
129fa670	171	if ((indx = findname(string, "top", &bufp, &toplist)) == -1)
33a39b1e KM	172	return;
33a39b1e KM	173	mib[0] = indx;
1fdacbde KM	174	if (indx == CTL_DEBUG)
1fdacbde KM	175	debuginit();
33a39b1e KM	176	lp = &secondlevel[indx];
	177	if (lp->list == 0) {
	178	fprintf(stderr, "%s: class is not implemented\n",
	179	topname[indx]);
	180	return;
	181	}
18ca9a3c	182	if (bufp == NULL) {
129fa670	183	listall(topname[indx].ctl_name, lp);
18ca9a3c KM	184	return;
18ca9a3c KM	185	}
33a39b1e KM	186	if ((indx = findname(string, "second", &bufp, lp)) == -1)
	187	return;
	188	mib[1] = indx;
129fa670 KM	189	type = lp->list[indx].ctl_type;
129fa670 KM	190	len = 2;
33a39b1e KM	191	switch (mib[0]) {
	192
	193	case CTL_KERN:
	194	switch (mib[1]) {
629efb73 KM	195	case KERN_PROF:
	196	mib[2] = GPROF_STATE;
	197	size = sizeof state;
	198	if (sysctl(mib, 3, &state, &size, NULL, 0) < 0) {
	199	if (flags == 0)
	200	return;
	201	if (!nflag)
	202	fprintf(stdout, "%s: ", string);
	203	fprintf(stderr,
	204	"kernel is not compiled for profiling\n");
	205	return;
	206	}
	207	if (!nflag)
	208	fprintf(stdout, "%s: %s\n", string,
	209	state == GMON_PROF_OFF ? "off" : "running");
	210	return;
33a39b1e KM	211	case KERN_VNODE:
	212	case KERN_FILE:
	213	if (flags == 0)
	214	return;
	215	fprintf(stderr,
	216	"Use pstat to view %s information\n", string);
	217	return;
	218	case KERN_PROC:
	219	if (flags == 0)
	220	return;
	221	fprintf(stderr,
	222	"Use ps to view %s information\n", string);
	223	return;
	224	case KERN_CLOCKRATE:
	225	isclockrate = 1;
	226	break;
3c56a5f8 KM	227	case KERN_BOOTTIME:
	228	isboottime = 1;
	229	break;
33a39b1e KM	230	}
	231	break;
	232
	233	case CTL_HW:
	234	break;
	235
	236	case CTL_VM:
	237	if (mib[1] == VM_LOADAVG) {
	238	double loads[3];
	239
	240	getloadavg(loads, 3);
18ca9a3c KM	241	if (!nflag)
	242	fprintf(stdout, "%s: ", string);
	243	fprintf(stdout, "%.2f %.2f %.2f\n",
33a39b1e KM	244	loads[0], loads[1], loads[2]);
	245	return;
	246	}
	247	if (flags == 0)
	248	return;
	249	fprintf(stderr,
	250	"Use vmstat or systat to view %s information\n", string);
	251	return;
	252
	253	case CTL_NET:
129fa670 KM	254	if (mib[1] == PF_INET) {
	255	len = sysctl_inet(string, &bufp, mib, flags, &type);
	256	if (len >= 0)
	257	break;
	258	return;
	259	}
33a39b1e KM	260	if (flags == 0)
	261	return;
	262	fprintf(stderr, "Use netstat to view %s information\n", string);
	263	return;
	264
33a39b1e	265	case CTL_DEBUG:
1fdacbde KM	266	mib[2] = CTL_DEBUG_VALUE;
	267	len = 3;
	268	break;
	269
	270	case CTL_FS:
33a39b1e	271	case CTL_MACHDEP:
759ce31c	272	case CTL_USER:
33a39b1e KM	273	break;
	274
	275	default:
	276	fprintf(stderr, "Illegal top level value: %d\n", mib[0]);
	277	return;
	278
	279	}
129fa670 KM	280	if (bufp) {
	281	fprintf(stderr, "name %s in %s is unknown\n", *bufp, string);
	282	return;
	283	}
	284	if (newsize > 0) {
	285	switch (type) {
	286	case CTLTYPE_INT:
	287	intval = atoi(newval);
	288	newval = &intval;
	289	newsize = sizeof intval;
	290	break;
33a39b1e	291
129fa670 KM	292	case CTLTYPE_QUAD:
	293	sscanf(newval, "%qd", &quadval);
	294	newval = &quadval;
	295	newsize = sizeof quadval;
	296	break;
	297	}
	298	}
33a39b1e	299	size = BUFSIZ;
129fa670	300	if (sysctl(mib, len, buf, &size, newsize ? newval : 0, newsize) == -1) {
33a39b1e KM	301	if (flags == 0)
	302	return;
	303	switch (errno) {
	304	case EOPNOTSUPP:
	305	fprintf(stderr, "%s: value is not available\n", string);
	306	return;
	307	case ENOTDIR:
	308	fprintf(stderr, "%s: specification is incomplete\n",
	309	string);
	310	return;
	311	case ENOMEM:
	312	fprintf(stderr, "%s: type is unknown to this program\n",
	313	string);
	314	return;
	315	default:
	316	perror(string);
	317	return;
	318	}
	319	}
	320	if (isclockrate) {
	321	struct clockinfo clkp = (struct clockinfo )buf;
	322
18ca9a3c KM	323	if (!nflag)
18ca9a3c KM	324	fprintf(stdout, "%s: ", string);
33a39b1e	325	fprintf(stdout,
18ca9a3c KM	326	"hz = %d, tick = %d, profhz = %d, stathz = %d\n",
18ca9a3c KM	327	clkp->hz, clkp->tick, clkp->profhz, clkp->stathz);
33a39b1e KM	328	return;
33a39b1e KM	329	}
3c56a5f8 KM	330	if (isboottime) {
	331	struct timeval btp = (struct timeval )buf;
	332
	333	if (!nflag)
	334	fprintf(stdout, "%s = %s\n", string,
	335	ctime(&btp->tv_sec));
	336	else
	337	fprintf(stdout, "%d\n", btp->tv_sec);
	338	return;
	339	}
129fa670 KM	340	switch (type) {
129fa670 KM	341	case CTLTYPE_INT:
18ca9a3c KM	342	if (newsize == 0) {
	343	if (!nflag)
	344	fprintf(stdout, "%s = ", string);
	345	fprintf(stdout, "%d\n", (int )buf);
	346	} else {
	347	if (!nflag)
	348	fprintf(stdout, "%s: %d -> ", string,
	349	(int )buf);
	350	fprintf(stdout, "%d\n", (int )newval);
	351	}
129fa670 KM	352	return;
	353
	354	case CTLTYPE_STRING:
18ca9a3c KM	355	if (newsize == 0) {
	356	if (!nflag)
	357	fprintf(stdout, "%s = ", string);
	358	fprintf(stdout, "%s\n", buf);
	359	} else {
	360	if (!nflag)
	361	fprintf(stdout, "%s: %s -> ", string, buf);
	362	fprintf(stdout, "%s\n", newval);
	363	}
129fa670 KM	364	return;
	365
	366	case CTLTYPE_QUAD:
	367	if (newsize == 0) {
	368	if (!nflag)
	369	fprintf(stdout, "%s = ", string);
	370	fprintf(stdout, "%qd\n", (quad_t )buf);
	371	} else {
	372	if (!nflag)
	373	fprintf(stdout, "%s: %qd -> ", string,
	374	(quad_t )buf);
	375	fprintf(stdout, "%qd\n", (quad_t )newval);
	376	}
	377	return;
	378
	379	case CTLTYPE_STRUCT:
	380	fprintf(stderr, "%s: unknown structure returned\n",
	381	string);
	382	return;
	383
	384	default:
	385	case CTLTYPE_NODE:
	386	fprintf(stderr, "%s: unknown type returned\n",
	387	string);
	388	return;
	389	}
	390	}
	391
1fdacbde KM	392	/*
	393	* Initialize the set of debugging names
	394	*/
	395	debuginit()
	396	{
	397	int mib[3], size, loc, i;
	398
	399	if (secondlevel[CTL_DEBUG].list != 0)
	400	return;
	401	secondlevel[CTL_DEBUG].list = debugname;
	402	mib[0] = CTL_DEBUG;
	403	mib[2] = CTL_DEBUG_NAME;
	404	for (loc = 0, i = 0; i < CTL_DEBUG_MAXID; i++) {
	405	mib[1] = i;
	406	size = BUFSIZ - loc;
	407	if (sysctl(mib, 3, &names[loc], &size, NULL, 0) == -1)
	408	continue;
	409	debugname[i].ctl_name = &names[loc];
	410	debugname[i].ctl_type = CTLTYPE_INT;
	411	loc += size;
	412	}
	413	}
	414
129fa670 KM	415	struct ctlname inetname[] = CTL_IPPROTO_NAMES;
	416	struct ctlname ipname[] = IPCTL_NAMES;
	417	struct ctlname icmpname[] = ICMPCTL_NAMES;
5082da2b	418	struct ctlname udpname[] = UDPCTL_NAMES;
129fa670 KM	419	struct list inetlist = { inetname, IPPROTO_MAXID };
129fa670 KM	420	struct list inetvars[] = {
5082da2b KM	421	{ ipname, IPCTL_MAXID }, /* ip */
	422	{ icmpname, ICMPCTL_MAXID }, /* icmp */
	423	{ 0, 0 }, /* igmp */
	424	{ 0, 0 }, /* ggmp */
	425	{ 0, 0 },
	426	{ 0, 0 },
	427	{ 0, 0 }, /* tcp */
	428	{ 0, 0 },
	429	{ 0, 0 }, /* egp */
	430	{ 0, 0 },
	431	{ 0, 0 },
	432	{ 0, 0 },
	433	{ 0, 0 }, /* pup */
	434	{ 0, 0 },
	435	{ 0, 0 },
	436	{ 0, 0 },
	437	{ 0, 0 },
	438	{ udpname, UDPCTL_MAXID }, /* udp */
129fa670 KM	439	};
	440
	441	/*
	442	* handle internet requests
	443	*/
	444	sysctl_inet(string, bufpp, mib, flags, typep)
	445	char *string;
	446	char **bufpp;
	447	int mib[];
	448	int flags;
	449	int *typep;
	450	{
	451	struct list *lp;
	452	int indx;
	453
	454	if (*bufpp == NULL) {
	455	listall(string, &inetlist);
	456	return (-1);
	457	}
	458	if ((indx = findname(string, "third", bufpp, &inetlist)) == -1)
	459	return (-1);
	460	mib[2] = indx;
5082da2b	461	if (indx <= IPPROTO_UDP && inetvars[indx].list != NULL)
129fa670 KM	462	lp = &inetvars[indx];
	463	else if (!flags)
	464	return (-1);
	465	else {
	466	fprintf(stderr, "%s: no variables defined for this protocol\n",
	467	string);
	468	return (-1);
	469	}
	470	if (*bufpp == NULL) {
	471	listall(string, lp);
	472	return (-1);
	473	}
	474	if ((indx = findname(string, "fourth", bufpp, lp)) == -1)
	475	return (-1);
	476	mib[3] = indx;
	477	*typep = lp->list[indx].ctl_type;
	478	return (4);
33a39b1e KM	479	}
	480
	481	/*
	482	* Scan a list of names searching for a particular name.
	483	*/
	484	findname(string, level, bufp, namelist)
	485	char *string;
	486	char *level;
	487	char **bufp;
	488	struct list *namelist;
	489	{
	490	char *name;
	491	int i;
	492
	493	if (namelist->list == 0 \|\| (name = strsep(bufp, ".")) == NULL) {
	494	fprintf(stderr, "%s: incomplete specification\n", string);
	495	return (-1);
	496	}
	497	for (i = 0; i < namelist->size; i++)
cdbdb4d7 CT	498	if (namelist->list[i].ctl_name != NULL &&
cdbdb4d7 CT	499	strcmp(name, namelist->list[i].ctl_name) == 0)
33a39b1e KM	500	break;
	501	if (i == namelist->size) {
	502	fprintf(stderr, "%s level name %s in %s is invalid\n",
	503	level, name, string);
	504	return (-1);
	505	}
	506	return (i);
	507	}
	508
	509	usage()
	510	{
	511
31ac5c9a KM	512	(void)fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n\t%s\n",
	513	"sysctl [-n] variable ...", "sysctl [-n] -w variable=value ...",
	514	"sysctl [-n] -a", "sysctl [-n] -A");
33a39b1e KM	515	exit(1);
33a39b1e KM	516	}