kgmon.c revision 8857
11553Srgrimes/* 21553Srgrimes * Copyright (c) 1983, 1992, 1993 31553Srgrimes * The Regents of the University of California. All rights reserved. 41553Srgrimes * 51553Srgrimes * Redistribution and use in source and binary forms, with or without 61553Srgrimes * modification, are permitted provided that the following conditions 71553Srgrimes * are met: 81553Srgrimes * 1. Redistributions of source code must retain the above copyright 91553Srgrimes * notice, this list of conditions and the following disclaimer. 101553Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111553Srgrimes * notice, this list of conditions and the following disclaimer in the 121553Srgrimes * documentation and/or other materials provided with the distribution. 131553Srgrimes * 3. All advertising materials mentioning features or use of this software 141553Srgrimes * must display the following acknowledgement: 151553Srgrimes * This product includes software developed by the University of 161553Srgrimes * California, Berkeley and its contributors. 171553Srgrimes * 4. Neither the name of the University nor the names of its contributors 181553Srgrimes * may be used to endorse or promote products derived from this software 191553Srgrimes * without specific prior written permission. 201553Srgrimes * 211553Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221553Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231553Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241553Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251553Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261553Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271553Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281553Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291553Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301553Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311553Srgrimes * SUCH DAMAGE. 321553Srgrimes */ 331553Srgrimes 341553Srgrimes#ifndef lint 351553Srgrimesstatic char copyright[] = 361553Srgrimes"@(#) Copyright (c) 1983, 1992, 1993\n\ 371553Srgrimes The Regents of the University of California. All rights reserved.\n"; 381553Srgrimes#endif /* not lint */ 391553Srgrimes 401553Srgrimes#ifndef lint 411553Srgrimesstatic char sccsid[] = "@(#)kgmon.c 8.1 (Berkeley) 6/6/93"; 421553Srgrimes#endif /* not lint */ 431553Srgrimes 441553Srgrimes#include <sys/param.h> 451553Srgrimes#include <sys/file.h> 461553Srgrimes#include <sys/sysctl.h> 471553Srgrimes#include <sys/gmon.h> 481553Srgrimes#include <errno.h> 491553Srgrimes#include <kvm.h> 501553Srgrimes#include <limits.h> 511553Srgrimes#include <stdio.h> 521553Srgrimes#include <stdlib.h> 531553Srgrimes#include <string.h> 541553Srgrimes#include <nlist.h> 551553Srgrimes#include <ctype.h> 561553Srgrimes#include <paths.h> 571553Srgrimes 581553Srgrimesstruct nlist nl[] = { 591553Srgrimes#define N_GMONPARAM 0 601553Srgrimes { "__gmonparam" }, 611553Srgrimes#define N_PROFHZ 1 621553Srgrimes { "_profhz" }, 631553Srgrimes 0, 641553Srgrimes}; 651553Srgrimes 661553Srgrimesstruct kvmvars { 671553Srgrimes kvm_t *kd; 681553Srgrimes struct gmonparam gpm; 691553Srgrimes}; 701553Srgrimes 711553Srgrimesint bflag, hflag, kflag, rflag, pflag; 721553Srgrimesint debug = 0; 731553Srgrimesvoid setprof __P((struct kvmvars *kvp, int state)); 741553Srgrimesvoid dumpstate __P((struct kvmvars *kvp)); 751553Srgrimesvoid reset __P((struct kvmvars *kvp)); 761553Srgrimes 771553Srgrimesint 781553Srgrimesmain(int argc, char **argv) 791553Srgrimes{ 801553Srgrimes extern char *optarg; 811553Srgrimes extern int optind; 821553Srgrimes int ch, mode, disp, accessmode; 831553Srgrimes struct kvmvars kvmvars; 841553Srgrimes char *system, *kmemf; 851553Srgrimes 861553Srgrimes seteuid(getuid()); 871553Srgrimes kmemf = NULL; 881553Srgrimes system = NULL; 891553Srgrimes while ((ch = getopt(argc, argv, "M:N:bhpr")) != EOF) { 901553Srgrimes switch((char)ch) { 911553Srgrimes 921553Srgrimes case 'M': 931553Srgrimes kmemf = optarg; 941553Srgrimes kflag = 1; 951553Srgrimes break; 961553Srgrimes 971553Srgrimes case 'N': 981553Srgrimes system = optarg; 991553Srgrimes break; 1001553Srgrimes 1011553Srgrimes case 'b': 1021553Srgrimes bflag = 1; 1031553Srgrimes break; 1041553Srgrimes 1051553Srgrimes case 'h': 1061553Srgrimes hflag = 1; 1071553Srgrimes break; 1081553Srgrimes 1091553Srgrimes case 'p': 1101553Srgrimes pflag = 1; 1111553Srgrimes break; 1121553Srgrimes 1131553Srgrimes case 'r': 1141553Srgrimes rflag = 1; 1151553Srgrimes break; 1161553Srgrimes 1171553Srgrimes default: 1181553Srgrimes (void)fprintf(stderr, 1191553Srgrimes "usage: kgmon [-bhrp] [-M core] [-N system]\n"); 1201553Srgrimes exit(1); 1211553Srgrimes } 1221553Srgrimes } 1231553Srgrimes argc -= optind; 1241553Srgrimes argv += optind; 1251553Srgrimes 1261553Srgrimes#define BACKWARD_COMPATIBILITY 1271553Srgrimes#ifdef BACKWARD_COMPATIBILITY 1281553Srgrimes if (*argv) { 1291553Srgrimes system = *argv; 1301553Srgrimes if (*++argv) { 1311553Srgrimes kmemf = *argv; 1321553Srgrimes ++kflag; 1331553Srgrimes } 1341553Srgrimes } 1351553Srgrimes#endif 1361553Srgrimes if (system == NULL) 1373041Swollman system = (char *)getbootfile(); 1381553Srgrimes accessmode = openfiles(system, kmemf, &kvmvars); 1391553Srgrimes mode = getprof(&kvmvars); 1401553Srgrimes if (hflag) 1411553Srgrimes disp = GMON_PROF_OFF; 1421553Srgrimes else if (bflag) 1431553Srgrimes disp = GMON_PROF_ON; 1441553Srgrimes else 1451553Srgrimes disp = mode; 1461553Srgrimes if (pflag) 1471553Srgrimes dumpstate(&kvmvars); 1481553Srgrimes if (rflag) 1491553Srgrimes reset(&kvmvars); 1501553Srgrimes if (accessmode == O_RDWR) 1511553Srgrimes setprof(&kvmvars, disp); 1521553Srgrimes (void)fprintf(stdout, "kgmon: kernel profiling is %s.\n", 1531553Srgrimes disp == GMON_PROF_OFF ? "off" : "running"); 1541553Srgrimes return (0); 1551553Srgrimes} 1561553Srgrimes 1571553Srgrimes/* 1581553Srgrimes * Check that profiling is enabled and open any ncessary files. 1591553Srgrimes */ 1601553Srgrimesopenfiles(system, kmemf, kvp) 1611553Srgrimes char *system; 1621553Srgrimes char *kmemf; 1631553Srgrimes struct kvmvars *kvp; 1641553Srgrimes{ 1651553Srgrimes int mib[3], state, size, openmode; 1661553Srgrimes char errbuf[_POSIX2_LINE_MAX]; 1671553Srgrimes 1681553Srgrimes if (!kflag) { 1691553Srgrimes mib[0] = CTL_KERN; 1701553Srgrimes mib[1] = KERN_PROF; 1711553Srgrimes mib[2] = GPROF_STATE; 1721553Srgrimes size = sizeof state; 1731553Srgrimes if (sysctl(mib, 3, &state, &size, NULL, 0) < 0) { 1741553Srgrimes (void)fprintf(stderr, 1751553Srgrimes "kgmon: profiling not defined in kernel.\n"); 1761553Srgrimes exit(20); 1771553Srgrimes } 1781553Srgrimes if (!(bflag || hflag || rflag || 1791553Srgrimes (pflag && state == GMON_PROF_ON))) 1801553Srgrimes return (O_RDONLY); 1811553Srgrimes (void)seteuid(0); 1821553Srgrimes if (sysctl(mib, 3, NULL, NULL, &state, size) >= 0) 1831553Srgrimes return (O_RDWR); 1841553Srgrimes (void)seteuid(getuid()); 1851553Srgrimes kern_readonly(state); 1861553Srgrimes return (O_RDONLY); 1871553Srgrimes } 1881553Srgrimes openmode = (bflag || hflag || pflag || rflag) ? O_RDWR : O_RDONLY; 1891553Srgrimes kvp->kd = kvm_openfiles(system, kmemf, NULL, openmode, errbuf); 1901553Srgrimes if (kvp->kd == NULL) { 1911553Srgrimes if (openmode == O_RDWR) { 1921553Srgrimes openmode = O_RDONLY; 1931553Srgrimes kvp->kd = kvm_openfiles(system, kmemf, NULL, O_RDONLY, 1941553Srgrimes errbuf); 1951553Srgrimes } 1961553Srgrimes if (kvp->kd == NULL) { 1971553Srgrimes (void)fprintf(stderr, "kgmon: kvm_openfiles: %s\n", 1981553Srgrimes errbuf); 1991553Srgrimes exit(2); 2001553Srgrimes } 2011553Srgrimes kern_readonly(GMON_PROF_ON); 2021553Srgrimes } 2031553Srgrimes if (kvm_nlist(kvp->kd, nl) < 0) { 2041553Srgrimes (void)fprintf(stderr, "kgmon: %s: no namelist\n", system); 2051553Srgrimes exit(3); 2061553Srgrimes } 2071553Srgrimes if (!nl[N_GMONPARAM].n_value) { 2081553Srgrimes (void)fprintf(stderr, 2091553Srgrimes "kgmon: profiling not defined in kernel.\n"); 2101553Srgrimes exit(20); 2111553Srgrimes } 2121553Srgrimes return (openmode); 2131553Srgrimes} 2141553Srgrimes 2151553Srgrimes/* 2161553Srgrimes * Suppress options that require a writable kernel. 2171553Srgrimes */ 2181553Srgrimeskern_readonly(mode) 2191553Srgrimes int mode; 2201553Srgrimes{ 2211553Srgrimes 2221553Srgrimes (void)fprintf(stderr, "kgmon: kernel read-only: "); 2231553Srgrimes if (pflag && mode == GMON_PROF_ON) 2241553Srgrimes (void)fprintf(stderr, "data may be inconsistent\n"); 2251553Srgrimes if (rflag) 2261553Srgrimes (void)fprintf(stderr, "-r supressed\n"); 2271553Srgrimes if (bflag) 2281553Srgrimes (void)fprintf(stderr, "-b supressed\n"); 2291553Srgrimes if (hflag) 2301553Srgrimes (void)fprintf(stderr, "-h supressed\n"); 2311553Srgrimes rflag = bflag = hflag = 0; 2321553Srgrimes} 2331553Srgrimes 2341553Srgrimes/* 2351553Srgrimes * Get the state of kernel profiling. 2361553Srgrimes */ 2371553Srgrimesgetprof(kvp) 2381553Srgrimes struct kvmvars *kvp; 2391553Srgrimes{ 2401553Srgrimes int mib[3], size; 2411553Srgrimes 2421553Srgrimes if (kflag) { 2431553Srgrimes size = kvm_read(kvp->kd, nl[N_GMONPARAM].n_value, &kvp->gpm, 2441553Srgrimes sizeof kvp->gpm); 2451553Srgrimes } else { 2461553Srgrimes mib[0] = CTL_KERN; 2471553Srgrimes mib[1] = KERN_PROF; 2481553Srgrimes mib[2] = GPROF_GMONPARAM; 2491553Srgrimes size = sizeof kvp->gpm; 2501553Srgrimes if (sysctl(mib, 3, &kvp->gpm, &size, NULL, 0) < 0) 2511553Srgrimes size = 0; 2521553Srgrimes } 2531553Srgrimes if (size != sizeof kvp->gpm) { 2541553Srgrimes (void)fprintf(stderr, "kgmon: cannot get gmonparam: %s\n", 2551553Srgrimes kflag ? kvm_geterr(kvp->kd) : strerror(errno)); 2561553Srgrimes exit (4); 2571553Srgrimes } 2581553Srgrimes return (kvp->gpm.state); 2591553Srgrimes} 2601553Srgrimes 2611553Srgrimes/* 2621553Srgrimes * Enable or disable kernel profiling according to the state variable. 2631553Srgrimes */ 2641553Srgrimesvoid 2651553Srgrimessetprof(kvp, state) 2661553Srgrimes struct kvmvars *kvp; 2671553Srgrimes int state; 2681553Srgrimes{ 2691553Srgrimes struct gmonparam *p = (struct gmonparam *)nl[N_GMONPARAM].n_value; 2701553Srgrimes int mib[3], sz, oldstate; 2711553Srgrimes 2721553Srgrimes sz = sizeof(state); 2731553Srgrimes if (!kflag) { 2741553Srgrimes mib[0] = CTL_KERN; 2751553Srgrimes mib[1] = KERN_PROF; 2761553Srgrimes mib[2] = GPROF_STATE; 2771553Srgrimes if (sysctl(mib, 3, &oldstate, &sz, NULL, 0) < 0) 2781553Srgrimes goto bad; 2791553Srgrimes if (oldstate == state) 2801553Srgrimes return; 2811553Srgrimes (void)seteuid(0); 2821553Srgrimes if (sysctl(mib, 3, NULL, NULL, &state, sz) >= 0) { 2831553Srgrimes (void)seteuid(getuid()); 2841553Srgrimes return; 2851553Srgrimes } 2861553Srgrimes (void)seteuid(getuid()); 2878857Srgrimes } else if (kvm_write(kvp->kd, (u_long)&p->state, (void *)&state, sz) 2881553Srgrimes == sz) 2891553Srgrimes return; 2901553Srgrimesbad: 2911553Srgrimes (void)fprintf(stderr, "kgmon: warning: cannot turn profiling %s\n", 2921553Srgrimes state == GMON_PROF_OFF ? "off" : "on"); 2931553Srgrimes} 2941553Srgrimes 2951553Srgrimes/* 2961553Srgrimes * Build the gmon.out file. 2971553Srgrimes */ 2981553Srgrimesvoid 2991553Srgrimesdumpstate(kvp) 3001553Srgrimes struct kvmvars *kvp; 3011553Srgrimes{ 3021553Srgrimes register FILE *fp; 3031553Srgrimes struct rawarc rawarc; 3041553Srgrimes struct tostruct *tos; 3051553Srgrimes u_long frompc, addr; 3061553Srgrimes u_short *froms, *tickbuf; 3071553Srgrimes int mib[3], i; 3081553Srgrimes struct gmonhdr h; 3091553Srgrimes int fromindex, endfrom, toindex; 3101553Srgrimes 3111553Srgrimes setprof(kvp, GMON_PROF_OFF); 3121553Srgrimes fp = fopen("gmon.out", "w"); 3131553Srgrimes if (fp == 0) { 3141553Srgrimes perror("gmon.out"); 3151553Srgrimes return; 3161553Srgrimes } 3171553Srgrimes 3181553Srgrimes /* 3191553Srgrimes * Build the gmon header and write it to a file. 3201553Srgrimes */ 3211553Srgrimes bzero(&h, sizeof(h)); 3221553Srgrimes h.lpc = kvp->gpm.lowpc; 3231553Srgrimes h.hpc = kvp->gpm.highpc; 3241553Srgrimes h.ncnt = kvp->gpm.kcountsize + sizeof(h); 3251553Srgrimes h.version = GMONVERSION; 3261553Srgrimes h.profrate = getprofhz(kvp); 3271553Srgrimes fwrite((char *)&h, sizeof(h), 1, fp); 3281553Srgrimes 3291553Srgrimes /* 3301553Srgrimes * Write out the tick buffer. 3311553Srgrimes */ 3321553Srgrimes mib[0] = CTL_KERN; 3331553Srgrimes mib[1] = KERN_PROF; 3341553Srgrimes if ((tickbuf = (u_short *)malloc(kvp->gpm.kcountsize)) == NULL) { 3351553Srgrimes fprintf(stderr, "kgmon: cannot allocate kcount space\n"); 3361553Srgrimes exit (5); 3371553Srgrimes } 3381553Srgrimes if (kflag) { 3391553Srgrimes i = kvm_read(kvp->kd, (u_long)kvp->gpm.kcount, (void *)tickbuf, 3401553Srgrimes kvp->gpm.kcountsize); 3411553Srgrimes } else { 3421553Srgrimes mib[2] = GPROF_COUNT; 3431553Srgrimes i = kvp->gpm.kcountsize; 3441553Srgrimes if (sysctl(mib, 3, tickbuf, &i, NULL, 0) < 0) 3451553Srgrimes i = 0; 3461553Srgrimes } 3471553Srgrimes if (i != kvp->gpm.kcountsize) { 3481553Srgrimes (void)fprintf(stderr, "kgmon: read ticks: read %u, got %d: %s", 3491553Srgrimes kvp->gpm.kcountsize, i, 3501553Srgrimes kflag ? kvm_geterr(kvp->kd) : strerror(errno)); 3511553Srgrimes exit(6); 3521553Srgrimes } 3531553Srgrimes if ((fwrite(tickbuf, kvp->gpm.kcountsize, 1, fp)) != 1) { 3541553Srgrimes perror("kgmon: writing tocks to gmon.out"); 3551553Srgrimes exit(7); 3561553Srgrimes } 3571553Srgrimes free(tickbuf); 3581553Srgrimes 3591553Srgrimes /* 3601553Srgrimes * Write out the arc info. 3611553Srgrimes */ 3621553Srgrimes if ((froms = (u_short *)malloc(kvp->gpm.fromssize)) == NULL) { 3631553Srgrimes fprintf(stderr, "kgmon: cannot allocate froms space\n"); 3641553Srgrimes exit (8); 3651553Srgrimes } 3661553Srgrimes if (kflag) { 3671553Srgrimes i = kvm_read(kvp->kd, (u_long)kvp->gpm.froms, (void *)froms, 3681553Srgrimes kvp->gpm.fromssize); 3691553Srgrimes } else { 3701553Srgrimes mib[2] = GPROF_FROMS; 3711553Srgrimes i = kvp->gpm.fromssize; 3721553Srgrimes if (sysctl(mib, 3, froms, &i, NULL, 0) < 0) 3731553Srgrimes i = 0; 3741553Srgrimes } 3751553Srgrimes if (i != kvp->gpm.fromssize) { 3761553Srgrimes (void)fprintf(stderr, "kgmon: read froms: read %u, got %d: %s", 3771553Srgrimes kvp->gpm.fromssize, i, 3781553Srgrimes kflag ? kvm_geterr(kvp->kd) : strerror(errno)); 3791553Srgrimes exit(9); 3801553Srgrimes } 3811553Srgrimes if ((tos = (struct tostruct *)malloc(kvp->gpm.tossize)) == NULL) { 3821553Srgrimes fprintf(stderr, "kgmon: cannot allocate tos space\n"); 3831553Srgrimes exit(10); 3841553Srgrimes } 3851553Srgrimes if (kflag) { 3861553Srgrimes i = kvm_read(kvp->kd, (u_long)kvp->gpm.tos, (void *)tos, 3871553Srgrimes kvp->gpm.tossize); 3881553Srgrimes } else { 3891553Srgrimes mib[2] = GPROF_TOS; 3901553Srgrimes i = kvp->gpm.tossize; 3911553Srgrimes if (sysctl(mib, 3, tos, &i, NULL, 0) < 0) 3921553Srgrimes i = 0; 3931553Srgrimes } 3941553Srgrimes if (i != kvp->gpm.tossize) { 3951553Srgrimes (void)fprintf(stderr, "kgmon: read tos: read %u, got %d: %s", 3961553Srgrimes kvp->gpm.tossize, i, 3971553Srgrimes kflag ? kvm_geterr(kvp->kd) : strerror(errno)); 3981553Srgrimes exit(11); 3991553Srgrimes } 4001553Srgrimes if (debug) 4011553Srgrimes (void)fprintf(stderr, "kgmon: lowpc 0x%x, textsize 0x%x\n", 4021553Srgrimes kvp->gpm.lowpc, kvp->gpm.textsize); 4031553Srgrimes endfrom = kvp->gpm.fromssize / sizeof(*froms); 4041553Srgrimes for (fromindex = 0; fromindex < endfrom; ++fromindex) { 4051553Srgrimes if (froms[fromindex] == 0) 4061553Srgrimes continue; 4071553Srgrimes frompc = (u_long)kvp->gpm.lowpc + 4081553Srgrimes (fromindex * kvp->gpm.hashfraction * sizeof(*froms)); 4091553Srgrimes for (toindex = froms[fromindex]; toindex != 0; 4101553Srgrimes toindex = tos[toindex].link) { 4111553Srgrimes if (debug) 4121553Srgrimes (void)fprintf(stderr, 4131553Srgrimes "%s: [mcleanup] frompc 0x%x selfpc 0x%x count %d\n", 4141553Srgrimes "kgmon", frompc, tos[toindex].selfpc, 4151553Srgrimes tos[toindex].count); 4161553Srgrimes rawarc.raw_frompc = frompc; 4171553Srgrimes rawarc.raw_selfpc = (u_long)tos[toindex].selfpc; 4181553Srgrimes rawarc.raw_count = tos[toindex].count; 4191553Srgrimes fwrite((char *)&rawarc, sizeof(rawarc), 1, fp); 4201553Srgrimes } 4211553Srgrimes } 4221553Srgrimes fclose(fp); 4231553Srgrimes} 4241553Srgrimes 4251553Srgrimes/* 4261553Srgrimes * Get the profiling rate. 4271553Srgrimes */ 4281553Srgrimesint 4291553Srgrimesgetprofhz(kvp) 4301553Srgrimes struct kvmvars *kvp; 4311553Srgrimes{ 4321553Srgrimes int mib[2], size, profrate; 4331553Srgrimes struct clockinfo clockrate; 4341553Srgrimes 4351553Srgrimes if (kflag) { 4361553Srgrimes profrate = 1; 4371553Srgrimes if (kvm_read(kvp->kd, nl[N_PROFHZ].n_value, &profrate, 4381553Srgrimes sizeof profrate) != sizeof profrate) 4391553Srgrimes (void)fprintf(stderr, "kgmon: get clockrate: %s\n", 4401553Srgrimes kvm_geterr(kvp->kd)); 4411553Srgrimes return (profrate); 4421553Srgrimes } 4431553Srgrimes mib[0] = CTL_KERN; 4441553Srgrimes mib[1] = KERN_CLOCKRATE; 4451553Srgrimes clockrate.profhz = 1; 4461553Srgrimes size = sizeof clockrate; 4471553Srgrimes if (sysctl(mib, 2, &clockrate, &size, NULL, 0) < 0) 4481553Srgrimes (void)fprintf(stderr, "kgmon: get clockrate: %s\n", 4491553Srgrimes strerror(errno)); 4501553Srgrimes return (clockrate.profhz); 4511553Srgrimes} 4521553Srgrimes 4531553Srgrimes/* 4541553Srgrimes * Reset the kernel profiling date structures. 4551553Srgrimes */ 4561553Srgrimesvoid 4571553Srgrimesreset(kvp) 4581553Srgrimes struct kvmvars *kvp; 4591553Srgrimes{ 4601553Srgrimes char *zbuf; 4611553Srgrimes u_long biggest; 4621553Srgrimes int mib[3]; 4631553Srgrimes 4641553Srgrimes setprof(kvp, GMON_PROF_OFF); 4651553Srgrimes 4661553Srgrimes biggest = kvp->gpm.kcountsize; 4671553Srgrimes if (kvp->gpm.fromssize > biggest) 4681553Srgrimes biggest = kvp->gpm.fromssize; 4691553Srgrimes if (kvp->gpm.tossize > biggest) 4701553Srgrimes biggest = kvp->gpm.tossize; 4711553Srgrimes if ((zbuf = (char *)malloc(biggest)) == NULL) { 4721553Srgrimes fprintf(stderr, "kgmon: cannot allocate zbuf space\n"); 4731553Srgrimes exit(12); 4741553Srgrimes } 4751553Srgrimes bzero(zbuf, biggest); 4761553Srgrimes if (kflag) { 4771553Srgrimes if (kvm_write(kvp->kd, (u_long)kvp->gpm.kcount, zbuf, 4781553Srgrimes kvp->gpm.kcountsize) != kvp->gpm.kcountsize) { 4791553Srgrimes (void)fprintf(stderr, "kgmon: tickbuf zero: %s\n", 4801553Srgrimes kvm_geterr(kvp->kd)); 4811553Srgrimes exit(13); 4821553Srgrimes } 4831553Srgrimes if (kvm_write(kvp->kd, (u_long)kvp->gpm.froms, zbuf, 4841553Srgrimes kvp->gpm.fromssize) != kvp->gpm.fromssize) { 4851553Srgrimes (void)fprintf(stderr, "kgmon: froms zero: %s\n", 4861553Srgrimes kvm_geterr(kvp->kd)); 4871553Srgrimes exit(14); 4881553Srgrimes } 4891553Srgrimes if (kvm_write(kvp->kd, (u_long)kvp->gpm.tos, zbuf, 4901553Srgrimes kvp->gpm.tossize) != kvp->gpm.tossize) { 4911553Srgrimes (void)fprintf(stderr, "kgmon: tos zero: %s\n", 4921553Srgrimes kvm_geterr(kvp->kd)); 4931553Srgrimes exit(15); 4941553Srgrimes } 4951553Srgrimes return; 4961553Srgrimes } 4971553Srgrimes (void)seteuid(0); 4981553Srgrimes mib[0] = CTL_KERN; 4991553Srgrimes mib[1] = KERN_PROF; 5001553Srgrimes mib[2] = GPROF_COUNT; 5011553Srgrimes if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.kcountsize) < 0) { 5021553Srgrimes (void)fprintf(stderr, "kgmon: tickbuf zero: %s\n", 5031553Srgrimes strerror(errno)); 5041553Srgrimes exit(13); 5051553Srgrimes } 5061553Srgrimes mib[2] = GPROF_FROMS; 5071553Srgrimes if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.fromssize) < 0) { 5081553Srgrimes (void)fprintf(stderr, "kgmon: froms zero: %s\n", 5091553Srgrimes strerror(errno)); 5101553Srgrimes exit(14); 5111553Srgrimes } 5121553Srgrimes mib[2] = GPROF_TOS; 5131553Srgrimes if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.tossize) < 0) { 5141553Srgrimes (void)fprintf(stderr, "kgmon: tos zero: %s\n", 5151553Srgrimes strerror(errno)); 5161553Srgrimes exit(15); 5171553Srgrimes } 5181553Srgrimes (void)seteuid(getuid()); 5191553Srgrimes free(zbuf); 5201553Srgrimes} 521