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/* $OpenBSD: nlist.c,v 1.20 2017/01/24 22:40:09 deraadt Exp $ */ |
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/* $NetBSD: nlist.c,v 1.11 1995/03/21 09:08:03 cgd Exp $ */ |
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/*- |
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* Copyright (c) 1990, 1993, 1994 |
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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. 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/param.h> /* MAXCOMLEN */ |
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#include <sys/time.h> |
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#include <sys/signal.h> |
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#include <sys/resource.h> |
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#include <sys/sysctl.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <kvm.h> |
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#include <nlist.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "ps.h" |
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struct nlist psnl[] = { |
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{"_fscale"}, |
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#define X_FSCALE 0 |
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{"_ccpu"}, |
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#define X_CCPU 1 |
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{"_physmem"}, |
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#define X_PHYSMEM 2 |
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{"_maxslp"}, |
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#define X_MAXSLP 3 |
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{NULL} |
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}; |
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fixpt_t ccpu; /* kernel _ccpu variable */ |
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int nlistread; /* if nlist already read. */ |
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u_int mempages; /* number of pages of phys. memory */ |
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int fscale; /* kernel _fscale variable */ |
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int maxslp; |
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extern kvm_t *kd; |
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#define kread(x, v) \ |
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kvm_read(kd, psnl[x].n_value, &v, sizeof v) != sizeof(v) |
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int |
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donlist(void) |
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{ |
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int64_t physmem; |
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int rval, mib[2]; |
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size_t siz; |
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rval = 0; |
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nlistread = 1; |
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✗✓ |
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if (kd != NULL && !kvm_sysctl_only) { |
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if (kvm_nlist(kd, psnl)) { |
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nlisterr(psnl); |
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eval = 1; |
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return (1); |
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} |
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if (kread(X_FSCALE, fscale)) { |
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warnx("fscale: %s", kvm_geterr(kd)); |
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eval = rval = 1; |
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} |
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if (kread(X_PHYSMEM, mempages)) { |
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warnx("physmem: %s", kvm_geterr(kd)); |
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eval = rval = 1; |
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} |
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if (kread(X_CCPU, ccpu)) { |
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warnx("ccpu: %s", kvm_geterr(kd)); |
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eval = rval = 1; |
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} |
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if (kread(X_MAXSLP, maxslp)) { |
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warnx("maxslp: %s", kvm_geterr(kd)); |
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eval = rval = 1; |
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} |
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} else { |
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siz = sizeof (fscale); |
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mib[0] = CTL_KERN; |
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mib[1] = KERN_FSCALE; |
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✗✓ |
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if (sysctl(mib, 2, &fscale, &siz, NULL, 0) < 0) { |
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warnx("fscale: failed to get kern.fscale"); |
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eval = rval = 1; |
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} |
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siz = sizeof (physmem); |
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mib[0] = CTL_HW; |
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mib[1] = HW_PHYSMEM64; |
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✗✓ |
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if (sysctl(mib, 2, &physmem, &siz, NULL, 0) < 0) { |
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warnx("physmem: failed to get hw.physmem"); |
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eval = rval = 1; |
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} |
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/* translate bytes into page count */ |
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mempages = physmem / getpagesize(); |
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siz = sizeof (ccpu); |
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mib[0] = CTL_KERN; |
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mib[1] = KERN_CCPU; |
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✗✓ |
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if (sysctl(mib, 2, &ccpu, &siz, NULL, 0) < 0) { |
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warnx("ccpu: failed to get kern.ccpu"); |
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eval = rval = 1; |
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} |
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siz = sizeof (maxslp); |
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mib[0] = CTL_VM; |
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mib[1] = VM_MAXSLP; |
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✗✓ |
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if (sysctl(mib, 2, &maxslp, &siz, NULL, 0) < 0) { |
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warnx("maxslp: failed to get vm.maxslp"); |
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eval = rval = 1; |
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} |
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} |
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return (rval); |
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} |
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void |
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nlisterr(struct nlist nl[]) |
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{ |
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int i; |
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(void)fprintf(stderr, "ps: nlist: can't find following symbols:"); |
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for (i = 0; nl[i].n_name != NULL; i++) |
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if (nl[i].n_value == 0) |
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(void)fprintf(stderr, " %s", nl[i].n_name); |
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(void)fprintf(stderr, "\n"); |
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} |