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 1.3 1994/10/02 08:19:11 davidg Exp $ 34 */ 35 36 #ifndef lint 37 static char 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 #ifdef P_PPWAIT 55 #define NEWVM 56 #endif 57 58 struct nlist psnl[] = { 59 {"_fscale"}, 60 #define X_FSCALE 0 61 {"_ccpu"}, 62 #define X_CCPU 1 63 #ifdef NEWVM 64 {"_avail_start"}, 65 #define X_AVAILSTART 2 66 {"_avail_end"}, 67 #define X_AVAILEND 3 68 #else 69 {"_ecmx"}, 70 #define X_ECMX 2 71 #endif 72 {NULL} 73 }; 74 75 fixpt_t ccpu; /* kernel _ccpu variable */ 76 int nlistread; /* if nlist already read. */ 77 int mempages; /* number of pages of phys. memory */ 78 int fscale; /* kernel _fscale variable */ 79 80 extern kvm_t *kd; 81 82 #define kread(x, v) \ 83 kvm_read(kd, psnl[x].n_value, (char *)&v, sizeof v) != sizeof(v) 84 85 int 86 donlist() 87 { 88 int rval; 89 #ifdef NEWVM 90 int tmp; 91 #endif 92 93 rval = 0; 94 nlistread = 1; 95 if (kvm_nlist(kd, psnl)) { 96 nlisterr(psnl); 97 eval = 1; 98 return (1); 99 } 100 if (kread(X_FSCALE, fscale)) { 101 warnx("fscale: %s", kvm_geterr(kd)); 102 eval = rval = 1; 103 } 104 #ifdef NEWVM 105 if (kread(X_AVAILEND, mempages)) { 106 warnx("avail_start: %s", kvm_geterr(kd)); 107 eval = rval = 1; 108 } 109 if (kread(X_AVAILSTART, tmp)) { 110 warnx("avail_end: %s", kvm_geterr(kd)); 111 eval = rval = 1; 112 } 113 mempages -= tmp; 114 #else 115 if (kread(X_ECMX, mempages)) { 116 warnx("ecmx: %s", kvm_geterr(kd)); 117 eval = rval = 1; 118 } 119 #endif 120 if (kread(X_CCPU, ccpu)) { 121 warnx("ccpu: %s", kvm_geterr(kd)); 122 eval = rval = 1; 123 } 124 return (rval); 125 } 126 127 void 128 nlisterr(nl) 129 struct nlist nl[]; 130 { 131 int i; 132 133 (void)fprintf(stderr, "ps: nlist: can't find following symbols:"); 134 for (i = 0; nl[i].n_name != NULL; i++) 135 if (nl[i].n_value == 0) 136 (void)fprintf(stderr, " %s", nl[i].n_name); 137 (void)fprintf(stderr, "\n"); 138 } 139