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 34 #ifndef lint 35 static char sccsid[] = "@(#)nlist.c 8.4 (Berkeley) 4/2/94"; 36 #endif /* not lint */ 37 38 #include <sys/param.h> 39 #include <sys/time.h> 40 #include <sys/proc.h> 41 #include <sys/resource.h> 42 43 #include <err.h> 44 #include <errno.h> 45 #include <kvm.h> 46 #include <nlist.h> 47 #include <stdio.h> 48 #include <string.h> 49 50 #include "ps.h" 51 52 #ifdef P_PPWAIT 53 #define NEWVM 54 #endif 55 56 struct nlist psnl[] = { 57 {"_fscale"}, 58 #define X_FSCALE 0 59 {"_ccpu"}, 60 #define X_CCPU 1 61 #ifdef NEWVM 62 {"_avail_start"}, 63 #define X_AVAILSTART 2 64 {"_avail_end"}, 65 #define X_AVAILEND 3 66 #else 67 {"_ecmx"}, 68 #define X_ECMX 2 69 #endif 70 {NULL} 71 }; 72 73 fixpt_t ccpu; /* kernel _ccpu variable */ 74 int nlistread; /* if nlist already read. */ 75 int mempages; /* number of pages of phys. memory */ 76 int fscale; /* kernel _fscale variable */ 77 78 extern kvm_t *kd; 79 80 #define kread(x, v) \ 81 kvm_read(kd, psnl[x].n_value, (char *)&v, sizeof v) != sizeof(v) 82 83 int 84 donlist() 85 { 86 int rval; 87 #ifdef NEWVM 88 int tmp; 89 #endif 90 91 rval = 0; 92 nlistread = 1; 93 if (kvm_nlist(kd, psnl)) { 94 nlisterr(psnl); 95 eval = 1; 96 return (1); 97 } 98 if (kread(X_FSCALE, fscale)) { 99 warnx("fscale: %s", kvm_geterr(kd)); 100 eval = rval = 1; 101 } 102 #ifdef NEWVM 103 if (kread(X_AVAILEND, mempages)) { 104 warnx("avail_start: %s", kvm_geterr(kd)); 105 eval = rval = 1; 106 } 107 if (kread(X_AVAILSTART, tmp)) { 108 warnx("avail_end: %s", kvm_geterr(kd)); 109 eval = rval = 1; 110 } 111 mempages -= tmp; 112 #else 113 if (kread(X_ECMX, mempages)) { 114 warnx("ecmx: %s", kvm_geterr(kd)); 115 eval = rval = 1; 116 } 117 #endif 118 if (kread(X_CCPU, ccpu)) { 119 warnx("ccpu: %s", kvm_geterr(kd)); 120 eval = rval = 1; 121 } 122 return (rval); 123 } 124 125 void 126 nlisterr(nl) 127 struct nlist nl[]; 128 { 129 int i; 130 131 (void)fprintf(stderr, "ps: nlist: can't find following symbols:"); 132 for (i = 0; nl[i].n_name != NULL; i++) 133 if (nl[i].n_value == 0) 134 (void)fprintf(stderr, " %s", nl[i].n_name); 135 (void)fprintf(stderr, "\n"); 136 } 137