609 lines
14 KiB
C
609 lines
14 KiB
C
/* $NetBSD: sysctl.c,v 1.16 1998/03/11 17:44:02 thorpej Exp $ */
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/*
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT(
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"@(#) Copyright (c) 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)sysctl.c 8.1 (Berkeley) 6/6/93";
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#else
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__RCSID("$NetBSD: sysctl.c,v 1.16 1998/03/11 17:44:02 thorpej Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/gmon.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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#include <sys/socket.h>
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#include <vm/vm_param.h>
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#include <machine/cpu.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_icmp.h>
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#include <netinet/icmp_var.h>
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#include <netinet/ip_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <netinet/tcp.h>
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#include <netinet/tcp_timer.h>
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#include <netinet/tcp_var.h>
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#include <err.h>
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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struct ctlname topname[] = CTL_NAMES;
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struct ctlname kernname[] = CTL_KERN_NAMES;
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struct ctlname vmname[] = CTL_VM_NAMES;
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struct ctlname netname[] = CTL_NET_NAMES;
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struct ctlname hwname[] = CTL_HW_NAMES;
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struct ctlname username[] = CTL_USER_NAMES;
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struct ctlname ddbname[] = CTL_DDB_NAMES;
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struct ctlname debugname[CTL_DEBUG_MAXID];
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#ifdef CTL_MACHDEP_NAMES
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struct ctlname machdepname[] = CTL_MACHDEP_NAMES;
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#endif
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char names[BUFSIZ];
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struct list {
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struct ctlname *list;
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int size;
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};
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struct list toplist = { topname, CTL_MAXID };
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struct list secondlevel[] = {
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{ 0, 0 }, /* CTL_UNSPEC */
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{ kernname, KERN_MAXID }, /* CTL_KERN */
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{ vmname, VM_MAXID }, /* CTL_VM */
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{ 0, 0 }, /* CTL_VFS */
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{ netname, NET_MAXID }, /* CTL_NET */
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{ 0, CTL_DEBUG_MAXID }, /* CTL_DEBUG */
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{ hwname, HW_MAXID }, /* CTL_HW */
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#ifdef CTL_MACHDEP_NAMES
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{ machdepname, CPU_MAXID }, /* CTL_MACHDEP */
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#else
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{ 0, 0 }, /* CTL_MACHDEP */
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#endif
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{ username, USER_MAXID }, /* CTL_USER_NAMES */
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{ ddbname, DDBCTL_MAXID }, /* CTL_DDB_NAMES */
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};
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int Aflag, aflag, nflag, wflag;
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/*
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* Variables requiring special processing.
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*/
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#define CLOCK 0x00000001
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#define BOOTTIME 0x00000002
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#define CONSDEV 0x00000004
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int main __P((int, char *[]));
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static void listall __P((char *, struct list *));
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static void parse __P((char *, int));
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static void debuginit __P((void));
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static int sysctl_inet __P((char *, char **, int[], int, int *));
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static int findname __P((char *, char *, char **, struct list *));
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static void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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extern char *optarg;
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extern int optind;
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int ch, lvl1;
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while ((ch = getopt(argc, argv, "Aanw")) != -1) {
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switch (ch) {
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case 'A':
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Aflag = 1;
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break;
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case 'a':
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aflag = 1;
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break;
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case 'n':
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nflag = 1;
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break;
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case 'w':
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wflag = 1;
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (Aflag || aflag) {
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debuginit();
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for (lvl1 = 1; lvl1 < CTL_MAXID; lvl1++)
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listall(topname[lvl1].ctl_name, &secondlevel[lvl1]);
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return 0;
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}
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if (argc == 0)
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usage();
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while (argc-- > 0)
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parse(*argv++, 1);
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return 0;
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}
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/*
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* List all variables known to the system.
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*/
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static void
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listall(prefix, lp)
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char *prefix;
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struct list *lp;
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{
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int lvl2;
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char *cp, name[BUFSIZ];
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if (lp->list == 0)
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return;
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strcpy(name, prefix);
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cp = &name[strlen(name)];
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*cp++ = '.';
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for (lvl2 = 0; lvl2 < lp->size; lvl2++) {
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if (lp->list[lvl2].ctl_name == 0)
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continue;
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strcpy(cp, lp->list[lvl2].ctl_name);
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parse(name, Aflag);
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}
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}
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/*
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* Parse a name into a MIB entry.
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* Lookup and print out the MIB entry if it exists.
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* Set a new value if requested.
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*/
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static void
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parse(string, flags)
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char *string;
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int flags;
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{
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int indx, type, state, len;
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int special = 0;
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void *newval = 0;
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int intval, newsize = 0;
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quad_t quadval;
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size_t size;
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struct list *lp;
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int mib[CTL_MAXNAME];
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char *cp, *bufp, buf[BUFSIZ];
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bufp = buf;
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snprintf(buf, BUFSIZ, "%s", string);
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if ((cp = strchr(string, '=')) != NULL) {
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if (!wflag)
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errx(2, "Must specify -w to set variables");
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*strchr(buf, '=') = '\0';
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*cp++ = '\0';
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while (isspace((unsigned char) *cp))
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cp++;
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newval = cp;
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newsize = strlen(cp);
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}
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if ((indx = findname(string, "top", &bufp, &toplist)) == -1)
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return;
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mib[0] = indx;
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if (indx == CTL_DEBUG)
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debuginit();
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lp = &secondlevel[indx];
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if (lp->list == 0) {
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warnx("Class `%s' is not implemented",
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topname[indx].ctl_name);
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return;
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}
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if (bufp == NULL) {
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listall(topname[indx].ctl_name, lp);
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return;
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}
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if ((indx = findname(string, "second", &bufp, lp)) == -1)
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return;
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mib[1] = indx;
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type = lp->list[indx].ctl_type;
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len = 2;
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switch (mib[0]) {
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case CTL_KERN:
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switch (mib[1]) {
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case KERN_PROF:
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mib[2] = GPROF_STATE;
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size = sizeof state;
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if (sysctl(mib, 3, &state, &size, NULL, 0) < 0) {
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if (flags == 0)
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return;
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if (!nflag)
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fprintf(stdout, "%s: ", string);
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warnx("Kernel is not compiled for profiling");
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return;
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}
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if (!nflag)
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fprintf(stdout, "%s: %s\n", string,
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state == GMON_PROF_OFF ? "off" : "running");
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return;
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case KERN_VNODE:
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case KERN_FILE:
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if (flags == 0)
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return;
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warnx("Use pstat to view %s information", string);
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return;
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case KERN_PROC:
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if (flags == 0)
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return;
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warnx("Use ps to view %s information", string);
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return;
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case KERN_CLOCKRATE:
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special |= CLOCK;
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break;
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case KERN_BOOTTIME:
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special |= BOOTTIME;
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break;
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case KERN_NTPTIME:
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if (flags == 0)
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return;
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warnx("Use xntpdc -c kerninfo to view %s information",
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string);
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return;
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}
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break;
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case CTL_HW:
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break;
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case CTL_VM:
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if (mib[1] == VM_LOADAVG) {
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double loads[3];
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getloadavg(loads, 3);
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if (!nflag)
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fprintf(stdout, "%s: ", string);
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fprintf(stdout, "%.2f %.2f %.2f\n",
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loads[0], loads[1], loads[2]);
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return;
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}
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if (flags == 0)
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return;
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warnx("Use vmstat or systat to view %s information", string);
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return;
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case CTL_NET:
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if (mib[1] == PF_INET) {
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len = sysctl_inet(string, &bufp, mib, flags, &type);
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if (len >= 0)
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break;
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return;
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}
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if (flags == 0)
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return;
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warnx("Use netstat to view %s information", string);
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return;
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case CTL_DEBUG:
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mib[2] = CTL_DEBUG_VALUE;
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len = 3;
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break;
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case CTL_MACHDEP:
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#ifdef CPU_CONSDEV
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if (mib[1] == CPU_CONSDEV)
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special |= CONSDEV;
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#endif
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break;
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case CTL_VFS:
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case CTL_USER:
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case CTL_DDB:
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break;
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default:
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warnx("Illegal top level value: %d", mib[0]);
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return;
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}
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if (bufp) {
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warnx("Name %s in %s is unknown", bufp, string);
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return;
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}
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if (newsize > 0) {
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switch (type) {
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case CTLTYPE_INT:
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intval = atoi(newval);
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newval = &intval;
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newsize = sizeof intval;
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break;
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case CTLTYPE_QUAD:
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sscanf(newval, "%qd", (long long *)&quadval);
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newval = &quadval;
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newsize = sizeof quadval;
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break;
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}
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}
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size = BUFSIZ;
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if (sysctl(mib, len, buf, &size, newsize ? newval : 0, newsize) == -1) {
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if (flags == 0)
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return;
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switch (errno) {
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case EOPNOTSUPP:
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warnx("The value of %s is not available", string);
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return;
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case ENOTDIR:
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warnx("The specification of %s is incomplete",
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string);
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return;
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case ENOMEM:
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warnx("The type %s is unknown to this program",
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string);
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return;
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default:
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warn("sysctl() for %s failed", string);
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return;
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}
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}
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if (special & CLOCK) {
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struct clockinfo *clkp = (struct clockinfo *)buf;
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if (!nflag)
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fprintf(stdout, "%s: ", string);
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fprintf(stdout,
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"tick = %d, tickadj = %d, hz = %d, profhz = %d, stathz = %d\n",
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clkp->tick, clkp->tickadj, clkp->hz, clkp->profhz, clkp->stathz);
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return;
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}
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if (special & BOOTTIME) {
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struct timeval *btp = (struct timeval *)buf;
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time_t boottime;
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if (!nflag) {
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boottime = btp->tv_sec;
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fprintf(stdout, "%s = %s\n", string, ctime(&boottime));
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} else
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fprintf(stdout, "%ld\n", (long) btp->tv_sec);
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return;
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}
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if (special & CONSDEV) {
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dev_t dev = *(dev_t *)buf;
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if (!nflag)
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fprintf(stdout, "%s = %s\n", string,
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devname(dev, S_IFCHR));
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else
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fprintf(stdout, "0x%x\n", dev);
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return;
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}
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switch (type) {
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case CTLTYPE_INT:
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if (newsize == 0) {
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if (!nflag)
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fprintf(stdout, "%s = ", string);
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fprintf(stdout, "%d\n", *(int *)buf);
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} else {
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if (!nflag)
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fprintf(stdout, "%s: %d -> ", string,
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*(int *)buf);
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fprintf(stdout, "%d\n", *(int *)newval);
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}
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return;
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case CTLTYPE_STRING:
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if (newsize == 0) {
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if (!nflag)
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fprintf(stdout, "%s = ", string);
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fprintf(stdout, "%s\n", buf);
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} else {
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if (!nflag)
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fprintf(stdout, "%s: %s -> ", string, buf);
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fprintf(stdout, "%s\n", (char *) newval);
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}
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return;
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case CTLTYPE_QUAD:
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if (newsize == 0) {
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if (!nflag)
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fprintf(stdout, "%s = ", string);
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fprintf(stdout, "%qd\n", (long long)(*(quad_t *)buf));
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} else {
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if (!nflag)
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fprintf(stdout, "%s: %qd -> ", string,
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(long long)(*(quad_t *)buf));
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fprintf(stdout, "%qd\n",
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(long long)(*(quad_t *)newval));
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}
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return;
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case CTLTYPE_STRUCT:
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warnx("%s: unknown structure returned", string);
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return;
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default:
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case CTLTYPE_NODE:
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warnx("%s: unknown type returned", string);
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return;
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}
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}
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/*
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* Initialize the set of debugging names
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*/
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static void
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debuginit()
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{
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int mib[3], loc, i;
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size_t size;
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if (secondlevel[CTL_DEBUG].list != 0)
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return;
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secondlevel[CTL_DEBUG].list = debugname;
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mib[0] = CTL_DEBUG;
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mib[2] = CTL_DEBUG_NAME;
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for (loc = 0, i = 0; i < CTL_DEBUG_MAXID; i++) {
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mib[1] = i;
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size = BUFSIZ - loc;
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if (sysctl(mib, 3, &names[loc], &size, NULL, 0) == -1)
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continue;
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debugname[i].ctl_name = &names[loc];
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debugname[i].ctl_type = CTLTYPE_INT;
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loc += size;
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}
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}
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struct ctlname inetname[] = CTL_IPPROTO_NAMES;
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struct ctlname ipname[] = IPCTL_NAMES;
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struct ctlname icmpname[] = ICMPCTL_NAMES;
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struct ctlname tcpname[] = TCPCTL_NAMES;
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struct ctlname udpname[] = UDPCTL_NAMES;
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struct list inetlist = { inetname, IPPROTO_MAXID };
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struct list inetvars[] = {
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{ ipname, IPCTL_MAXID }, /* ip */
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{ icmpname, ICMPCTL_MAXID }, /* icmp */
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{ 0, 0 }, /* igmp */
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{ 0, 0 }, /* ggmp */
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{ 0, 0 },
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{ 0, 0 },
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{ tcpname, TCPCTL_MAXID }, /* tcp */
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{ 0, 0 },
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{ 0, 0 }, /* egp */
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{ 0, 0 },
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{ 0, 0 },
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{ 0, 0 },
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{ 0, 0 }, /* pup */
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{ 0, 0 },
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{ 0, 0 },
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{ 0, 0 },
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{ 0, 0 },
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{ udpname, UDPCTL_MAXID }, /* udp */
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};
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/*
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* handle internet requests
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*/
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static int
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sysctl_inet(string, bufpp, mib, flags, typep)
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char *string;
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char **bufpp;
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int mib[];
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int flags;
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int *typep;
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{
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struct list *lp;
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int indx;
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|
|
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 {
|
|
warnx("No variables defined for protocol %s", 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.
|
|
*/
|
|
static int
|
|
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) {
|
|
warnx("%s: incomplete specification", 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) {
|
|
warnx("%s level name %s in %s is invalid",
|
|
level, name, string);
|
|
return (-1);
|
|
}
|
|
return (i);
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
extern char *__progname;
|
|
|
|
(void)fprintf(stderr, "Usage:\t%s %s\n\t%s %s\n\t%s %s\n\t%s %s\n",
|
|
__progname, "[-n] variable ...",
|
|
__progname, "[-n] -w variable=value ...",
|
|
__progname, "[-n] -a",
|
|
__progname, "[-n] -A");
|
|
exit(1);
|
|
}
|