1 /*- 2 * Copyright (c) 1990, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $Id: nlist.c,v 1.8 1997/02/22 14:05:04 peter Exp $ 34 */ 35 36 #ifndef lint 37 static char const sccsid[] = "@(#)nlist.c 8.4 (Berkeley) 4/2/94"; 38 #endif /* not lint */ 39 40 #include <sys/param.h> 41 #include <sys/time.h> 42 #include <sys/proc.h> 43 #include <sys/resource.h> 44 45 #include <err.h> 46 #include <errno.h> 47 #include <kvm.h> 48 #include <nlist.h> 49 #include <stdio.h> 50 #include <string.h> 51 52 #include "ps.h" 53 54 struct nlist psnl[] = { 55 {"_fscale"}, 56 #define X_FSCALE 0 57 {"_ccpu"}, 58 #define X_CCPU 1 59 {"_avail_start"}, 60 #define X_AVAILSTART 2 61 {"_avail_end"}, 62 #define X_AVAILEND 3 63 {NULL} 64 }; 65 66 fixpt_t ccpu; /* kernel _ccpu variable */ 67 int nlistread; /* if nlist already read. */ 68 int mempages; /* number of pages of phys. memory */ 69 int fscale; /* kernel _fscale variable */ 70 71 extern kvm_t *kd; 72 73 #define kread(x, v) \ 74 kvm_read(kd, psnl[x].n_value, (char *)&v, sizeof v) != sizeof(v) 75 76 int 77 donlist() 78 { 79 int rval; 80 int tmp; 81 82 rval = 0; 83 nlistread = 1; 84 if (kvm_nlist(kd, psnl)) { 85 nlisterr(psnl); 86 eval = 1; 87 return (1); 88 } 89 if (kread(X_FSCALE, fscale)) { 90 warnx("fscale: %s", kvm_geterr(kd)); 91 eval = rval = 1; 92 } 93 if (kread(X_AVAILEND, mempages)) { 94 warnx("avail_start: %s", kvm_geterr(kd)); 95 eval = rval = 1; 96 } 97 if (kread(X_AVAILSTART, tmp)) { 98 warnx("avail_end: %s", kvm_geterr(kd)); 99 eval = rval = 1; 100 } 101 mempages -= tmp; 102 mempages /= PAGE_SIZE; 103 if (kread(X_CCPU, ccpu)) { 104 warnx("ccpu: %s", kvm_geterr(kd)); 105 eval = rval = 1; 106 } 107 return (rval); 108 } 109 110 void 111 nlisterr(nl) 112 struct nlist nl[]; 113 { 114 int i; 115 116 (void)fprintf(stderr, "ps: nlist: can't find following symbols:"); 117 for (i = 0; nl[i].n_name != NULL; i++) 118 if (nl[i].n_value == 0) 119 (void)fprintf(stderr, " %s", nl[i].n_name); 120 (void)fprintf(stderr, "\n"); 121 } 122