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Diffstat (limited to 'sbin/sysctl/sysctl.c')
-rw-r--r--sbin/sysctl/sysctl.c572
1 files changed, 572 insertions, 0 deletions
diff --git a/sbin/sysctl/sysctl.c b/sbin/sysctl/sysctl.c
new file mode 100644
index 000000000000..a3426868b4f2
--- /dev/null
+++ b/sbin/sysctl/sysctl.c
@@ -0,0 +1,572 @@
+/*
+ * Copyright (c) 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)sysctl.c 8.1 (Berkeley) 6/6/93";
+#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 <machine/cpu.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];
+#ifdef CTL_MACHDEP_NAMES
+struct ctlname machdepname[] = CTL_MACHDEP_NAMES;
+#endif
+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 */
+#ifdef CTL_MACHDEP_NAMES
+ { machdepname, CPU_MAXID }, /* CTL_MACHDEP */
+#else
+ { 0, 0 }, /* CTL_MACHDEP */
+#endif
+ { username, USER_MAXID }, /* CTL_USER_NAMES */
+};
+
+int Aflag, aflag, nflag, wflag;
+
+/*
+ * Variables requiring special processing.
+ */
+#define CLOCK 0x00000001
+#define BOOTTIME 0x00000002
+#define CONSDEV 0x00000004
+
+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 special = 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:
+ special |= CLOCK;
+ break;
+ case KERN_BOOTTIME:
+ special |= BOOTTIME;
+ 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_MACHDEP:
+#ifdef CPU_CONSDEV
+ if (mib[1] == CPU_CONSDEV)
+ special |= CONSDEV;
+#endif
+ break;
+
+ case CTL_FS:
+ 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 (special & CLOCK) {
+ 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 (special & BOOTTIME) {
+ 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;
+ }
+ if (special & CONSDEV) {
+ dev_t dev = *(dev_t *)buf;
+
+ if (!nflag)
+ fprintf(stdout, "%s = %s\n", string,
+ devname(dev, S_IFCHR));
+ else
+ fprintf(stdout, "0x%x\n", dev);
+ 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);
+}
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