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