(the patch in the PR was stale). PR: kern/5689 Submitted by: Hiten Pandya <hiten@unixdaemons.com>
685 lines
15 KiB
C
685 lines
15 KiB
C
/*
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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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#ifndef lint
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static const char 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[] = "@(#)from: sysctl.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#ifdef __i386__
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#include <sys/diskslice.h> /* used for bootdev parsing */
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#include <sys/reboot.h> /* used for bootdev parsing */
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#endif
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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#include <sys/vmmeter.h>
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#include <ctype.h>
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#include <err.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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static int aflag, bflag, dflag, eflag, Nflag, nflag, oflag, xflag;
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static int oidfmt(int *, int, char *, u_int *);
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static void parse(char *);
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static int show_var(int *, int);
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static int sysctl_all (int *oid, int len);
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static int name2oid(char *, int *);
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static void set_T_dev_t (char *, void **, int *);
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static void
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usage(void)
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{
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(void)fprintf(stderr, "%s\n%s\n",
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"usage: sysctl [-bdeNnox] variable[=value] ...",
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" sysctl [-bdeNnox] -a");
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exit(1);
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}
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int
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main(int argc, char **argv)
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{
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int ch;
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setbuf(stdout,0);
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setbuf(stderr,0);
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while ((ch = getopt(argc, argv, "AabdeNnowxX")) != -1) {
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switch (ch) {
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case 'A':
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/* compatibility */
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aflag = oflag = 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 'b':
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bflag = 1;
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break;
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case 'd':
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dflag = 1;
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break;
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case 'e':
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eflag = 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 'n':
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nflag = 1;
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break;
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case 'o':
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oflag = 1;
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break;
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case 'w':
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/* compatibility */
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/* ignored */
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break;
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case 'X':
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/* compatibility */
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aflag = xflag = 1;
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break;
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case 'x':
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xflag = 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 (Nflag && nflag)
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usage();
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if (aflag && argc == 0)
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exit(sysctl_all(0, 0));
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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++);
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exit(0);
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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(char *string)
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{
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int len, i, j;
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void *newval = 0;
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int intval;
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unsigned int uintval;
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long longval;
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unsigned long ulongval;
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size_t newsize = 0;
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quad_t quadval;
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int mib[CTL_MAXNAME];
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char *cp, *bufp, buf[BUFSIZ], fmt[BUFSIZ];
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u_int kind;
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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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*strchr(buf, '=') = '\0';
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*cp++ = '\0';
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while (isspace(*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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len = name2oid(bufp, mib);
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if (len < 0)
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errx(1, "unknown oid '%s'", bufp);
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if (oidfmt(mib, len, fmt, &kind))
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err(1, "couldn't find format of oid '%s'", bufp);
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if (newval == NULL) {
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if ((kind & CTLTYPE) == CTLTYPE_NODE) {
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sysctl_all(mib, len);
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} else {
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i = show_var(mib, len);
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if (!i && !bflag)
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putchar('\n');
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}
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} else {
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if ((kind & CTLTYPE) == CTLTYPE_NODE)
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errx(1, "oid '%s' isn't a leaf node", bufp);
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if (!(kind&CTLFLAG_WR))
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errx(1, "oid '%s' is read only", bufp);
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switch (kind & CTLTYPE) {
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case CTLTYPE_INT:
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intval = (int) strtol(newval, NULL, 0);
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newval = &intval;
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newsize = sizeof(intval);
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break;
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case CTLTYPE_UINT:
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uintval = (int) strtoul(newval, NULL, 0);
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newval = &uintval;
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newsize = sizeof uintval;
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break;
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case CTLTYPE_LONG:
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longval = strtol(newval, NULL, 0);
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newval = &longval;
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newsize = sizeof longval;
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break;
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case CTLTYPE_ULONG:
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ulongval = strtoul(newval, NULL, 0);
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newval = &ulongval;
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newsize = sizeof ulongval;
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break;
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case CTLTYPE_STRING:
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break;
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case CTLTYPE_QUAD:
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sscanf(newval, "%qd", &quadval);
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newval = &quadval;
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newsize = sizeof(quadval);
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break;
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case CTLTYPE_OPAQUE:
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if (strcmp(fmt, "T,dev_t") == 0) {
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set_T_dev_t ((char*)newval, &newval, &newsize);
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break;
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}
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/* FALLTHROUGH */
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default:
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errx(1, "oid '%s' is type %d,"
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" cannot set that", bufp,
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kind & CTLTYPE);
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}
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i = show_var(mib, len);
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if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
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if (!i && !bflag)
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putchar('\n');
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switch (errno) {
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case EOPNOTSUPP:
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errx(1, "%s: value is not available",
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string);
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case ENOTDIR:
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errx(1, "%s: specification is incomplete",
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string);
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case ENOMEM:
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errx(1, "%s: type is unknown to this program",
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string);
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default:
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warn("%s", string);
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return;
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}
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}
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if (!bflag)
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printf(" -> ");
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i = nflag;
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nflag = 1;
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j = show_var(mib, len);
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if (!j && !bflag)
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putchar('\n');
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nflag = i;
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}
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}
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/* These functions will dump out various interesting structures. */
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static int
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S_clockinfo(int l2, void *p)
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{
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struct clockinfo *ci = (struct clockinfo*)p;
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if (l2 != sizeof(*ci)) {
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warnx("S_clockinfo %d != %d", l2, sizeof(*ci));
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return (0);
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}
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printf("{ hz = %d, tick = %d, profhz = %d, stathz = %d }",
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ci->hz, ci->tick, ci->profhz, ci->stathz);
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return (0);
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}
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static int
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S_loadavg(int l2, void *p)
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{
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struct loadavg *tv = (struct loadavg*)p;
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if (l2 != sizeof(*tv)) {
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warnx("S_loadavg %d != %d", l2, sizeof(*tv));
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return (0);
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}
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printf("{ %.2f %.2f %.2f }",
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(double)tv->ldavg[0]/(double)tv->fscale,
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(double)tv->ldavg[1]/(double)tv->fscale,
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(double)tv->ldavg[2]/(double)tv->fscale);
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return (0);
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}
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static int
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S_timeval(int l2, void *p)
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{
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struct timeval *tv = (struct timeval*)p;
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time_t tv_sec;
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char *p1, *p2;
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if (l2 != sizeof(*tv)) {
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warnx("S_timeval %d != %d", l2, sizeof(*tv));
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return (0);
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}
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printf("{ sec = %ld, usec = %ld } ",
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tv->tv_sec, tv->tv_usec);
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tv_sec = tv->tv_sec;
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p1 = strdup(ctime(&tv_sec));
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for (p2=p1; *p2 ; p2++)
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if (*p2 == '\n')
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*p2 = '\0';
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fputs(p1, stdout);
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return (0);
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}
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static int
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S_vmtotal(int l2, void *p)
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{
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struct vmtotal *v = (struct vmtotal *)p;
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if (l2 != sizeof(*v)) {
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warnx("S_vmtotal %d != %d", l2, sizeof(*v));
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return (0);
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}
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printf("\nSystem wide totals computed every five seconds:\n");
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printf("===============================================\n");
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printf("Processes: (RUNQ:\t %hu Disk Wait: %hu Page Wait: %hu Sleep: %hu)\n",
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v->t_rq, v->t_dw, v->t_pw, v->t_sl);
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printf("Virtual Memory:\t\t (Total: %hu Active %hu)\n", v->t_vm, v->t_avm);
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printf("Real Memory:\t\t (Total: %hu Active %hu)\n", v->t_rm, v->t_arm);
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printf("Shared Virtual Memory:\t (Total: %hu Active: %hu)\n", v->t_vmshr, v->t_avmshr);
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printf("Shared Real Memory:\t (Total: %hu Active: %hu)\n", v->t_rmshr, v->t_armshr);
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printf("Free Memory Pages:\t %hu\n", v->t_free);
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return (0);
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}
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static int
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T_dev_t(int l2, void *p)
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{
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dev_t *d = (dev_t *)p;
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if (l2 != sizeof(*d)) {
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warnx("T_dev_T %d != %d", l2, sizeof(*d));
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return (0);
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}
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if ((int)(*d) != -1) {
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if (minor(*d) > 255 || minor(*d) < 0)
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printf("{ major = %d, minor = 0x%x }",
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major(*d), minor(*d));
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else
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printf("{ major = %d, minor = %d }",
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major(*d), minor(*d));
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}
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return (0);
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}
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static void
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set_T_dev_t (char *path, void **val, int *size)
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{
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static struct stat statb;
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if (strcmp(path, "none") && strcmp(path, "off")) {
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int rc = stat (path, &statb);
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if (rc) {
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err(1, "cannot stat %s", path);
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}
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if (!S_ISCHR(statb.st_mode)) {
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errx(1, "must specify a device special file.");
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}
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} else {
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statb.st_rdev = NODEV;
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}
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*val = (char*) &statb.st_rdev;
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*size = sizeof statb.st_rdev;
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}
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/*
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* These functions uses a presently undocumented interface to the kernel
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* to walk the tree and get the type so it can print the value.
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* This interface is under work and consideration, and should probably
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* be killed with a big axe by the first person who can find the time.
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* (be aware though, that the proper interface isn't as obvious as it
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* may seem, there are various conflicting requirements.
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*/
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static int
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name2oid(char *name, int *oidp)
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{
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int oid[2];
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int i;
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size_t j;
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oid[0] = 0;
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oid[1] = 3;
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j = CTL_MAXNAME * sizeof(int);
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i = sysctl(oid, 2, oidp, &j, name, strlen(name));
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if (i < 0)
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return i;
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j /= sizeof(int);
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return (j);
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}
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static int
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oidfmt(int *oid, int len, char *fmt, u_int *kind)
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{
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int qoid[CTL_MAXNAME+2];
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u_char buf[BUFSIZ];
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int i;
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size_t j;
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qoid[0] = 0;
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qoid[1] = 4;
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memcpy(qoid + 2, oid, len * sizeof(int));
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j = sizeof(buf);
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i = sysctl(qoid, len + 2, buf, &j, 0, 0);
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if (i)
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err(1, "sysctl fmt %d %d %d", i, j, errno);
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if (kind)
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*kind = *(u_int *)buf;
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if (fmt)
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strcpy(fmt, (char *)(buf + sizeof(u_int)));
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return 0;
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}
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#ifdef __i386__
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/*
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* Code to map a bootdev major number into a suitable device name.
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* Major numbers are mapped into names as in boot2.c
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*/
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struct _foo {
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int majdev;
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char *name;
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} maj2name[] = {
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30, "ad",
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0, "wd",
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1, "wfd",
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2, "fd",
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4, "da",
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-1, NULL /* terminator */
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};
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static int
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machdep_bootdev(u_long value)
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{
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int majdev, unit, slice, part;
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struct _foo *p;
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if (value & B_MAGICMASK != B_DEVMAGIC) {
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printf("invalid (0x%08x)", value);
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return 0;
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}
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majdev = B_TYPE(value);
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unit = B_UNIT(value);
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slice = B_SLICE(value);
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part = B_PARTITION(value);
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if (majdev == 2) { /* floppy, as known to the boot block... */
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printf("/dev/fd%d", unit);
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return 0;
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}
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for (p = maj2name; p->name != NULL && p->majdev != majdev ; p++) ;
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if (p->name != NULL) { /* found */
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if (slice == WHOLE_DISK_SLICE)
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printf("/dev/%s%d%c", p->name, unit, part);
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else
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printf("/dev/%s%ds%d%c",
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p->name, unit, slice - BASE_SLICE + 1, part + 'a');
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} else
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printf("unknown (major %d unit %d slice %d part %d)",
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majdev, unit, slice, part);
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return 0;
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}
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#endif
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/*
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* This formats and outputs the value of one variable
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*
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* Returns zero if anything was actually output.
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* Returns one if didn't know what to do with this.
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* Return minus one if we had errors.
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*/
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static int
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show_var(int *oid, int nlen)
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{
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u_char buf[BUFSIZ], *val, *p;
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char name[BUFSIZ], *fmt, *sep;
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int qoid[CTL_MAXNAME+2];
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int i;
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size_t j, len;
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u_int kind;
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int (*func)(int, void *);
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qoid[0] = 0;
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memcpy(qoid + 2, oid, nlen * sizeof(int));
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qoid[1] = 1;
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j = sizeof(name);
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i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
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if (i || !j)
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err(1, "sysctl name %d %d %d", i, j, errno);
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if (Nflag) {
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printf("%s", name);
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return (0);
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}
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if (eflag)
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sep = "=";
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else
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sep = ": ";
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if (dflag) { /* just print description */
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qoid[1] = 5;
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j = sizeof(buf);
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i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
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if (!nflag)
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printf("%s%s", name, sep);
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|
printf("%s", buf);
|
|
return (0);
|
|
}
|
|
/* find an estimate of how much we need for this var */
|
|
j = 0;
|
|
i = sysctl(oid, nlen, 0, &j, 0, 0);
|
|
j += j; /* we want to be sure :-) */
|
|
|
|
val = alloca(j);
|
|
len = j;
|
|
i = sysctl(oid, nlen, val, &len, 0, 0);
|
|
if (i || !len)
|
|
return (1);
|
|
|
|
if (bflag) {
|
|
fwrite(val, 1, len, stdout);
|
|
return (0);
|
|
}
|
|
val[len] = '\0';
|
|
fmt = buf;
|
|
oidfmt(oid, nlen, fmt, &kind);
|
|
p = val;
|
|
switch (*fmt) {
|
|
case 'A':
|
|
if (!nflag)
|
|
printf("%s%s", name, sep);
|
|
printf("%.*s", len, p);
|
|
return (0);
|
|
|
|
case 'I':
|
|
if (!nflag)
|
|
printf("%s%s", name, sep);
|
|
fmt++;
|
|
val = "";
|
|
while (len >= sizeof(int)) {
|
|
if(*fmt == 'U')
|
|
printf("%s%u", val, *(unsigned int *)p);
|
|
else
|
|
printf("%s%d", val, *(int *)p);
|
|
val = " ";
|
|
len -= sizeof(int);
|
|
p += sizeof(int);
|
|
}
|
|
return (0);
|
|
|
|
case 'L':
|
|
if (!nflag)
|
|
printf("%s%s", name, sep);
|
|
fmt++;
|
|
#ifdef __i386__
|
|
if (!strcmp(name, "machdep.guessed_bootdev"))
|
|
return machdep_bootdev(*(unsigned long *)p);
|
|
#endif
|
|
val = "";
|
|
while (len >= sizeof(long)) {
|
|
if(*fmt == 'U')
|
|
printf("%s%lu", val, *(unsigned long *)p);
|
|
else
|
|
printf("%s%ld", val, *(long *)p);
|
|
val = " ";
|
|
len -= sizeof(long);
|
|
p += sizeof(long);
|
|
}
|
|
return (0);
|
|
|
|
case 'P':
|
|
if (!nflag)
|
|
printf("%s%s", name, sep);
|
|
printf("%p", *(void **)p);
|
|
return (0);
|
|
|
|
case 'T':
|
|
case 'S':
|
|
i = 0;
|
|
if (strcmp(fmt, "S,clockinfo") == 0)
|
|
func = S_clockinfo;
|
|
else if (strcmp(fmt, "S,timeval") == 0)
|
|
func = S_timeval;
|
|
else if (strcmp(fmt, "S,loadavg") == 0)
|
|
func = S_loadavg;
|
|
else if (strcmp(fmt, "S,vmtotal") == 0)
|
|
func = S_vmtotal;
|
|
else if (strcmp(fmt, "T,dev_t") == 0)
|
|
func = T_dev_t;
|
|
else
|
|
func = NULL;
|
|
if (func) {
|
|
if (!nflag)
|
|
printf("%s%s", name, sep);
|
|
return ((*func)(len, p));
|
|
}
|
|
/* FALLTHROUGH */
|
|
default:
|
|
if (!oflag && !xflag)
|
|
return (1);
|
|
if (!nflag)
|
|
printf("%s%s", name, sep);
|
|
printf("Format:%s Length:%d Dump:0x", fmt, len);
|
|
while (len-- && (xflag || p < val + 16))
|
|
printf("%02x", *p++);
|
|
if (!xflag && len > 16)
|
|
printf("...");
|
|
return (0);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
sysctl_all (int *oid, int len)
|
|
{
|
|
int name1[22], name2[22];
|
|
int i, j;
|
|
size_t l1, l2;
|
|
|
|
name1[0] = 0;
|
|
name1[1] = 2;
|
|
l1 = 2;
|
|
if (len) {
|
|
memcpy(name1+2, oid, len * sizeof(int));
|
|
l1 += len;
|
|
} else {
|
|
name1[2] = 1;
|
|
l1++;
|
|
}
|
|
for (;;) {
|
|
l2 = sizeof(name2);
|
|
j = sysctl(name1, l1, name2, &l2, 0, 0);
|
|
if (j < 0) {
|
|
if (errno == ENOENT)
|
|
return 0;
|
|
else
|
|
err(1, "sysctl(getnext) %d %d", j, l2);
|
|
}
|
|
|
|
l2 /= sizeof(int);
|
|
|
|
if (l2 < len)
|
|
return 0;
|
|
|
|
for (i = 0; i < len; i++)
|
|
if (name2[i] != oid[i])
|
|
return 0;
|
|
|
|
i = show_var(name2, l2);
|
|
if (!i && !bflag)
|
|
putchar('\n');
|
|
|
|
memcpy(name1+2, name2, l2 * sizeof(int));
|
|
l1 = 2 + l2;
|
|
}
|
|
}
|