diff --git a/sbin/sysctl/sysctl.8 b/sbin/sysctl/sysctl.8 index 1f5c8e6af773..dbdf18716483 100644 --- a/sbin/sysctl/sysctl.8 +++ b/sbin/sysctl/sysctl.8 @@ -1,314 +1,302 @@ .\" 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. .\" 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. .\" .\" From: @(#)sysctl.8 8.1 (Berkeley) 6/6/93 .\" $FreeBSD$ .\" .Dd February 6, 2010 .Dt SYSCTL 8 .Os .Sh NAME .Nm sysctl .Nd get or set kernel state .Sh SYNOPSIS .Nm .Op Fl bdehiNnoqx .Ar name Ns Op = Ns Ar value .Ar ... .Nm .Op Fl bdehNnoqx .Fl a .Sh DESCRIPTION The .Nm utility retrieves kernel state and allows processes with appropriate privilege to set kernel state. The state to be retrieved or set is described using a .Dq Management Information Base .Pq Dq MIB style name, described as a dotted set of components. .Pp The following options are available: .Bl -tag -width indent .It Fl A Equivalent to .Fl o a (for compatibility). .It Fl a List all the currently available non-opaque values. This option is ignored if one or more variable names are specified on the command line. .It Fl b Force the value of the variable(s) to be output in raw, binary format. No names are printed and no terminating newlines are output. This is mostly useful with a single variable. .It Fl d Print the description of the variable instead of its value. .It Fl e Separate the name and the value of the variable(s) with .Ql = . This is useful for producing output which can be fed back to the .Nm utility. This option is ignored if either .Fl N or .Fl n is specified, or a variable is being set. .It Fl h Format output for human, rather than machine, readability. .It Fl i Ignore unknown OIDs. The purpose is to make use of .Nm for collecting data from a variety of machines (not all of which are necessarily running exactly the same software) easier. .It Fl N Show only variable names, not their values. This is particularly useful with shells that offer programmable completion. To enable completion of variable names in .Xr zsh 1 Pq Pa ports/shells/zsh , use the following code: .Bd -literal -offset indent listsysctls () { set -A reply $(sysctl -AN ${1%.*}) } compctl -K listsysctls sysctl .Ed .Pp To enable completion of variable names in .Xr tcsh 1 , use: .Pp .Dl "complete sysctl 'n/*/`sysctl -Na`/'" .It Fl n Show only variable values, not their names. This option is useful for setting shell variables. For instance, to save the pagesize in variable .Va psize , use: .Pp .Dl "set psize=`sysctl -n hw.pagesize`" .It Fl o Show opaque variables (which are normally suppressed). The format and length are printed, as well as a hex dump of the first sixteen bytes of the value. .It Fl q Suppress some warnings generated by .Nm to standard error. .It Fl X Equivalent to .Fl x a (for compatibility). .It Fl x As .Fl o , but prints a hex dump of the entire value instead of just the first few bytes. .El .Pp The information available from .Nm -consists of integers, strings, devices -.Pq Vt dev_t , -and opaque types. +consists of integers, strings, and opaque types. The .Nm utility only knows about a couple of opaque types, and will resort to hexdumps for the rest. The opaque information is much more useful if retrieved by special purpose programs such as .Xr ps 1 , .Xr systat 1 , and .Xr netstat 1 . .Pp Some of the variables which cannot be modified during normal system operation can be initialized via .Xr loader 8 tunables. This can for example be done by setting them in .Xr loader.conf 5 . Please refer to .Xr loader.conf 5 for more information on which tunables are available and how to set them. .Pp The string and integer information is summarized below. For a detailed description of these variable see .Xr sysctl 3 . .Pp The changeable column indicates whether a process with appropriate privilege can change the value. -String, integer, and devices values can be set using +String, and integer values can be set using .Nm . -For device values, -.Ar value -can be specified as a character device special file name. -Special values -.Cm off -and -.Cm none -denote -.Dq no device . .Bl -column security.bsd.unprivileged_read_msgbuf integerxxx .It Sy "Name Type Changeable .It "kern.ostype string no .It "kern.osrelease string no .It "kern.osrevision integer no .It "kern.version string no .It "kern.maxvnodes integer yes .It "kern.maxproc integer no .It "kern.maxprocperuid integer yes .It "kern.maxfiles integer yes .It "kern.maxfilesperproc integer yes .It "kern.argmax integer no .It "kern.securelevel integer raise only .It "kern.hostname string yes .It "kern.hostid integer yes .It "kern.clockrate struct no .It "kern.posix1version integer no .It "kern.ngroups integer no .It "kern.job_control integer no .It "kern.saved_ids integer no .It "kern.boottime struct no .It "kern.domainname string yes .It "kern.filedelay integer yes .It "kern.dirdelay integer yes .It "kern.metadelay integer yes .It "kern.osreldate string no .It "kern.bootfile string yes .It "kern.corefile string yes .It "kern.logsigexit integer yes .It "security.bsd.suser_enabled integer yes .It "security.bsd.see_other_uids integer yes .It "security.bsd.unprivileged_proc_debug integer yes .It "security.bsd.unprivileged_read_msgbuf integer yes .It "vm.loadavg struct no .It "hw.machine string no .It "hw.model string no .It "hw.ncpu integer no .It "hw.byteorder integer no .It "hw.physmem integer no .It "hw.usermem integer no .It "hw.pagesize integer no .It "hw.floatingpoint integer no .It "hw.machine_arch string no .It "hw.realmem integer no -.It "machdep.console_device dev_t no .It "machdep.adjkerntz integer yes .It "machdep.disable_rtc_set integer yes .It "machdep.guessed_bootdev string no .It "user.cs_path string no .It "user.bc_base_max integer no .It "user.bc_dim_max integer no .It "user.bc_scale_max integer no .It "user.bc_string_max integer no .It "user.coll_weights_max integer no .It "user.expr_nest_max integer no .It "user.line_max integer no .It "user.re_dup_max integer no .It "user.posix2_version integer no .It "user.posix2_c_bind integer no .It "user.posix2_c_dev integer no .It "user.posix2_char_term integer no .It "user.posix2_fort_dev integer no .It "user.posix2_fort_run integer no .It "user.posix2_localedef integer no .It "user.posix2_sw_dev integer no .It "user.posix2_upe integer no .It "user.stream_max integer no .It "user.tzname_max integer no .El .Sh FILES .Bl -tag -width ".In netinet/icmp_var.h" -compact .It In sys/sysctl.h definitions for top level identifiers, second level kernel and hardware identifiers, and user level identifiers .It In sys/socket.h definitions for second level network identifiers .It In sys/gmon.h definitions for third level profiling identifiers .It In vm/vm_param.h definitions for second level virtual memory identifiers .It In netinet/in.h definitions for third level Internet identifiers and fourth level IP identifiers .It In netinet/icmp_var.h definitions for fourth level ICMP identifiers .It In netinet/udp_var.h definitions for fourth level UDP identifiers .El .Sh EXAMPLES For example, to retrieve the maximum number of processes allowed in the system, one would use the following request: .Pp .Dl "sysctl kern.maxproc" .Pp To set the maximum number of processes allowed per uid to 1000, one would use the following request: .Pp .Dl "sysctl kern.maxprocperuid=1000" .Pp Information about the system clock rate may be obtained with: .Pp .Dl "sysctl kern.clockrate" .Pp Information about the load average history may be obtained with: .Pp .Dl "sysctl vm.loadavg" .Pp More variables than these exist, and the best and likely only place to search for their deeper meaning is undoubtedly the source where they are defined. .Sh COMPATIBILITY The .Fl w option has been deprecated and is silently ignored. .Sh SEE ALSO .Xr sysctl 3 , .Xr loader.conf 5 , .Xr sysctl.conf 5 , .Xr loader 8 .Sh HISTORY A .Nm utility first appeared in .Bx 4.4 . .Pp In .Fx 2.2 , .Nm was significantly remodeled. .Sh BUGS The .Nm utility presently exploits an undocumented interface to the kernel sysctl facility to traverse the sysctl tree and to retrieve format and name information. This correct interface is being thought about for the time being. diff --git a/sbin/sysctl/sysctl.c b/sbin/sysctl/sysctl.c index 93ff8c62ecf7..de37c8b20254 100644 --- a/sbin/sysctl/sysctl.c +++ b/sbin/sysctl/sysctl.c @@ -1,763 +1,721 @@ /* * 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. * 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 const char copyright[] = "@(#) Copyright (c) 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)from: sysctl.c 8.1 (Berkeley) 6/6/93"; #endif static const char rcsid[] = "$FreeBSD$"; #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static int aflag, bflag, dflag, eflag, hflag, iflag; static int Nflag, nflag, oflag, qflag, xflag, warncount; static int oidfmt(int *, int, char *, u_int *); static void parse(char *); static int show_var(int *, int); static int sysctl_all(int *oid, int len); static int name2oid(char *, int *); -static void set_T_dev_t(char *, void **, size_t *); static int set_IK(const char *, int *); static void usage(void) { (void)fprintf(stderr, "%s\n%s\n", "usage: sysctl [-bdehiNnoqx] name[=value] ...", " sysctl [-bdehNnoqx] -a"); exit(1); } int main(int argc, char **argv) { int ch; setlocale(LC_NUMERIC, ""); setbuf(stdout,0); setbuf(stderr,0); while ((ch = getopt(argc, argv, "AabdehiNnoqwxX")) != -1) { switch (ch) { case 'A': /* compatibility */ aflag = oflag = 1; break; case 'a': aflag = 1; break; case 'b': bflag = 1; break; case 'd': dflag = 1; break; case 'e': eflag = 1; break; case 'h': hflag = 1; break; case 'i': iflag = 1; break; case 'N': Nflag = 1; break; case 'n': nflag = 1; break; case 'o': oflag = 1; break; case 'q': qflag = 1; break; case 'w': /* compatibility */ /* ignored */ break; case 'X': /* compatibility */ aflag = xflag = 1; break; case 'x': xflag = 1; break; default: usage(); } } argc -= optind; argv += optind; if (Nflag && nflag) usage(); if (aflag && argc == 0) exit(sysctl_all(0, 0)); if (argc == 0) usage(); warncount = 0; while (argc-- > 0) parse(*argv++); exit(warncount); } /* * Parse a name into a MIB entry. * Lookup and print out the MIB entry if it exists. * Set a new value if requested. */ static void parse(char *string) { int len, i, j; void *newval = 0; int intval; unsigned int uintval; long longval; unsigned long ulongval; size_t newsize = 0; quad_t quadval; int mib[CTL_MAXNAME]; char *cp, *bufp, buf[BUFSIZ], *endptr, fmt[BUFSIZ]; u_int kind; bufp = buf; if (snprintf(buf, BUFSIZ, "%s", string) >= BUFSIZ) errx(1, "oid too long: '%s'", string); if ((cp = strchr(string, '=')) != NULL) { *strchr(buf, '=') = '\0'; *cp++ = '\0'; while (isspace(*cp)) cp++; newval = cp; newsize = strlen(cp); } len = name2oid(bufp, mib); if (len < 0) { if (iflag) return; if (qflag) exit(1); else errx(1, "unknown oid '%s'", bufp); } if (oidfmt(mib, len, fmt, &kind)) err(1, "couldn't find format of oid '%s'", bufp); if (newval == NULL) { if ((kind & CTLTYPE) == CTLTYPE_NODE) { if (dflag) { i = show_var(mib, len); if (!i && !bflag) putchar('\n'); } sysctl_all(mib, len); } else { i = show_var(mib, len); if (!i && !bflag) putchar('\n'); } } else { if ((kind & CTLTYPE) == CTLTYPE_NODE) errx(1, "oid '%s' isn't a leaf node", bufp); if (!(kind & CTLFLAG_WR)) { if (kind & CTLFLAG_TUN) { warnx("oid '%s' is a read only tunable", bufp); errx(1, "Tunable values are set in /boot/loader.conf"); } else { errx(1, "oid '%s' is read only", bufp); } } if ((kind & CTLTYPE) == CTLTYPE_INT || (kind & CTLTYPE) == CTLTYPE_UINT || (kind & CTLTYPE) == CTLTYPE_LONG || (kind & CTLTYPE) == CTLTYPE_ULONG || (kind & CTLTYPE) == CTLTYPE_QUAD) { if (strlen(newval) == 0) errx(1, "empty numeric value"); } switch (kind & CTLTYPE) { case CTLTYPE_INT: if (strcmp(fmt, "IK") == 0) { if (!set_IK(newval, &intval)) errx(1, "invalid value '%s'", (char *)newval); } else { intval = (int)strtol(newval, &endptr, 0); if (endptr == newval || *endptr != '\0') errx(1, "invalid integer '%s'", (char *)newval); } newval = &intval; newsize = sizeof(intval); break; case CTLTYPE_UINT: uintval = (int) strtoul(newval, &endptr, 0); if (endptr == newval || *endptr != '\0') errx(1, "invalid unsigned integer '%s'", (char *)newval); newval = &uintval; newsize = sizeof(uintval); break; case CTLTYPE_LONG: longval = strtol(newval, &endptr, 0); if (endptr == newval || *endptr != '\0') errx(1, "invalid long integer '%s'", (char *)newval); newval = &longval; newsize = sizeof(longval); break; case CTLTYPE_ULONG: ulongval = strtoul(newval, &endptr, 0); if (endptr == newval || *endptr != '\0') errx(1, "invalid unsigned long integer" " '%s'", (char *)newval); newval = &ulongval; newsize = sizeof(ulongval); break; case CTLTYPE_STRING: break; case CTLTYPE_QUAD: quadval = strtoq(newval, &endptr, 0); if (endptr == newval || *endptr != '\0') errx(1, "invalid quad integer" " '%s'", (char *)newval); newval = &quadval; newsize = sizeof(quadval); break; case CTLTYPE_OPAQUE: - if (strcmp(fmt, "T,dev_t") == 0) { - set_T_dev_t (newval, &newval, &newsize); - break; - } /* FALLTHROUGH */ default: errx(1, "oid '%s' is type %d," " cannot set that", bufp, kind & CTLTYPE); } i = show_var(mib, len); if (sysctl(mib, len, 0, 0, newval, newsize) == -1) { if (!i && !bflag) putchar('\n'); switch (errno) { case EOPNOTSUPP: errx(1, "%s: value is not available", string); case ENOTDIR: errx(1, "%s: specification is incomplete", string); case ENOMEM: errx(1, "%s: type is unknown to this program", string); default: warn("%s", string); warncount++; return; } } if (!bflag) printf(" -> "); i = nflag; nflag = 1; j = show_var(mib, len); if (!j && !bflag) putchar('\n'); nflag = i; } } /* These functions will dump out various interesting structures. */ static int S_clockinfo(int l2, void *p) { struct clockinfo *ci = (struct clockinfo*)p; if (l2 != sizeof(*ci)) { warnx("S_clockinfo %d != %zu", l2, sizeof(*ci)); return (1); } printf(hflag ? "{ hz = %'d, tick = %'d, profhz = %'d, stathz = %'d }" : "{ hz = %d, tick = %d, profhz = %d, stathz = %d }", ci->hz, ci->tick, ci->profhz, ci->stathz); return (0); } static int S_loadavg(int l2, void *p) { struct loadavg *tv = (struct loadavg*)p; if (l2 != sizeof(*tv)) { warnx("S_loadavg %d != %zu", l2, sizeof(*tv)); return (1); } printf(hflag ? "{ %'.2f %'.2f %'.2f }" : "{ %.2f %.2f %.2f }", (double)tv->ldavg[0]/(double)tv->fscale, (double)tv->ldavg[1]/(double)tv->fscale, (double)tv->ldavg[2]/(double)tv->fscale); return (0); } static int S_timeval(int l2, void *p) { struct timeval *tv = (struct timeval*)p; time_t tv_sec; char *p1, *p2; if (l2 != sizeof(*tv)) { warnx("S_timeval %d != %zu", l2, sizeof(*tv)); return (1); } printf(hflag ? "{ sec = %'jd, usec = %'ld } " : "{ sec = %jd, usec = %ld } ", (intmax_t)tv->tv_sec, tv->tv_usec); tv_sec = tv->tv_sec; p1 = strdup(ctime(&tv_sec)); for (p2=p1; *p2 ; p2++) if (*p2 == '\n') *p2 = '\0'; fputs(p1, stdout); free(p1); return (0); } static int S_vmtotal(int l2, void *p) { struct vmtotal *v = (struct vmtotal *)p; int pageKilo = getpagesize() / 1024; if (l2 != sizeof(*v)) { warnx("S_vmtotal %d != %zu", l2, sizeof(*v)); return (1); } printf( "\nSystem wide totals computed every five seconds:" " (values in kilobytes)\n"); printf("===============================================\n"); printf( "Processes:\t\t(RUNQ: %hd Disk Wait: %hd Page Wait: " "%hd Sleep: %hd)\n", v->t_rq, v->t_dw, v->t_pw, v->t_sl); printf( "Virtual Memory:\t\t(Total: %dK Active: %dK)\n", v->t_vm * pageKilo, v->t_avm * pageKilo); printf("Real Memory:\t\t(Total: %dK Active: %dK)\n", v->t_rm * pageKilo, v->t_arm * pageKilo); printf("Shared Virtual Memory:\t(Total: %dK Active: %dK)\n", v->t_vmshr * pageKilo, v->t_avmshr * pageKilo); printf("Shared Real Memory:\t(Total: %dK Active: %dK)\n", v->t_rmshr * pageKilo, v->t_armshr * pageKilo); printf("Free Memory Pages:\t%dK\n", v->t_free * pageKilo); return (0); } -static int -T_dev_t(int l2, void *p) -{ - dev_t *d = (dev_t *)p; - - if (l2 != sizeof(*d)) { - warnx("T_dev_T %d != %zu", l2, sizeof(*d)); - return (1); - } - printf("%s", devname(*d, S_IFCHR)); - return (0); -} - -static void -set_T_dev_t(char *path, void **val, size_t *size) -{ - static struct stat statb; - - if (strcmp(path, "none") && strcmp(path, "off")) { - int rc = stat (path, &statb); - if (rc) { - err(1, "cannot stat %s", path); - } - - if (!S_ISCHR(statb.st_mode)) { - errx(1, "must specify a device special file."); - } - } else { - statb.st_rdev = NODEV; - } - *val = (void *) &statb.st_rdev; - *size = sizeof(statb.st_rdev); -} - static int set_IK(const char *str, int *val) { float temp; int len, kelv; const char *p; char *endptr; if ((len = strlen(str)) == 0) return (0); p = &str[len - 1]; if (*p == 'C' || *p == 'F') { temp = strtof(str, &endptr); if (endptr == str || endptr != p) return (0); if (*p == 'F') temp = (temp - 32) * 5 / 9; kelv = temp * 10 + 2732; } else { kelv = (int)strtol(str, &endptr, 10); if (endptr == str || *endptr != '\0') return (0); } *val = kelv; return (1); } /* * These functions uses a presently undocumented interface to the kernel * to walk the tree and get the type so it can print the value. * This interface is under work and consideration, and should probably * be killed with a big axe by the first person who can find the time. * (be aware though, that the proper interface isn't as obvious as it * may seem, there are various conflicting requirements. */ static int name2oid(char *name, int *oidp) { int oid[2]; int i; size_t j; oid[0] = 0; oid[1] = 3; j = CTL_MAXNAME * sizeof(int); i = sysctl(oid, 2, oidp, &j, name, strlen(name)); if (i < 0) return (i); j /= sizeof(int); return (j); } static int oidfmt(int *oid, int len, char *fmt, u_int *kind) { int qoid[CTL_MAXNAME+2]; u_char buf[BUFSIZ]; int i; size_t j; qoid[0] = 0; qoid[1] = 4; memcpy(qoid + 2, oid, len * sizeof(int)); j = sizeof(buf); i = sysctl(qoid, len + 2, buf, &j, 0, 0); if (i) err(1, "sysctl fmt %d %zu %d", i, j, errno); if (kind) *kind = *(u_int *)buf; if (fmt) strcpy(fmt, (char *)(buf + sizeof(u_int))); return (0); } /* * This formats and outputs the value of one variable * * Returns zero if anything was actually output. * Returns one if didn't know what to do with this. * Return minus one if we had errors. */ static int show_var(int *oid, int nlen) { u_char buf[BUFSIZ], *val, *oval, *p; char name[BUFSIZ], *fmt; const char *sep, *sep1; int qoid[CTL_MAXNAME+2]; uintmax_t umv; intmax_t mv; int i, hexlen; size_t intlen; size_t j, len; u_int kind; int (*func)(int, void *); /* Silence GCC. */ umv = mv = intlen = 0; bzero(buf, BUFSIZ); bzero(name, BUFSIZ); qoid[0] = 0; memcpy(qoid + 2, oid, nlen * sizeof(int)); qoid[1] = 1; j = sizeof(name); i = sysctl(qoid, nlen + 2, name, &j, 0, 0); if (i || !j) err(1, "sysctl name %d %zu %d", i, j, errno); if (Nflag) { printf("%s", name); return (0); } if (eflag) sep = "="; else sep = ": "; if (dflag) { /* just print description */ qoid[1] = 5; j = sizeof(buf); i = sysctl(qoid, nlen + 2, buf, &j, 0, 0); if (!nflag) printf("%s%s", name, sep); 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 = oval = malloc(j + 1); if (val == NULL) { warnx("malloc failed"); return (1); } len = j; i = sysctl(oid, nlen, val, &len, 0, 0); if (i || !len) { free(oval); return (1); } if (bflag) { fwrite(val, 1, len, stdout); free(oval); 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", (int)len, p); free(oval); return (0); case 'I': case 'L': case 'Q': if (!nflag) printf("%s%s", name, sep); switch (*fmt) { case 'I': intlen = sizeof(int); break; case 'L': intlen = sizeof(long); break; case 'Q': intlen = sizeof(quad_t); break; } hexlen = 2 + (intlen * CHAR_BIT + 3) / 4; sep1 = ""; while (len >= intlen) { switch (*fmt) { case 'I': umv = *(u_int *)p; mv = *(int *)p; break; case 'L': umv = *(u_long *)p; mv = *(long *)p; break; case 'Q': umv = *(u_quad_t *)p; mv = *(quad_t *)p; break; } fputs(sep1, stdout); if (fmt[1] == 'U') printf(hflag ? "%'ju" : "%ju", umv); else if (fmt[1] == 'X') printf("%#0*jx", hexlen, umv); else if (fmt[1] == 'K') { if (mv < 0) printf("%jd", mv); else printf("%.1fC", (mv - 2732.0) / 10); } else printf(hflag ? "%'jd" : "%jd", mv); sep1 = " "; len -= intlen; p += intlen; } free(oval); return (0); case 'P': if (!nflag) printf("%s%s", name, sep); printf("%p", *(void **)p); free(oval); 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); i = (*func)(len, p); free(oval); return (i); } /* FALLTHROUGH */ default: if (!oflag && !xflag) { free(oval); return (1); } if (!nflag) printf("%s%s", name, sep); printf("Format:%s Length:%zu Dump:0x", fmt, len); while (len-- && (xflag || p < val + 16)) printf("%02x", *p++); if (!xflag && len > 16) printf("..."); free(oval); return (0); } free(oval); 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 %zu", j, l2); } l2 /= sizeof(int); if (len < 0 || l2 < (unsigned int)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; } }