Use err(3). Add usage() and prototypes.
This commit is contained in:
Philippe Charnier
parent
ecdf56e7d9
commit
fa6990870e
@ -46,7 +46,7 @@
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.Nm Kgmon
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is a tool used when profiling the operating system.
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When no arguments are supplied,
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.Nm kgmon
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.Nm
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indicates the state of operating system profiling as running,
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off, or not configured.
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(see
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@ -54,7 +54,7 @@ off, or not configured.
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If the
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.Fl p
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flag is specified,
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.Nm kgmon
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.Nm
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extracts profile data from the operating system and produces a
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.Pa gmon.out
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file suitable for later analysis by
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@ -32,13 +32,17 @@
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*/
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#ifndef lint
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static char copyright[] =
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static const char copyright[] =
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"@(#) Copyright (c) 1983, 1992, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)kgmon.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$Id$";
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#endif /* not lint */
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#include <sys/param.h>
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@ -46,22 +50,24 @@ static char sccsid[] = "@(#)kgmon.c 8.1 (Berkeley) 6/6/93";
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#include <sys/time.h>
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#include <sys/sysctl.h>
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#include <sys/gmon.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <kvm.h>
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#include <limits.h>
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#include <nlist.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <nlist.h>
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#include <ctype.h>
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#include <paths.h>
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#include <unistd.h>
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struct nlist nl[] = {
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#define N_GMONPARAM 0
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{ "__gmonparam" },
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#define N_PROFHZ 1
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{ "_profhz" },
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0,
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{ NULL },
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};
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struct kvmvars {
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@ -71,15 +77,18 @@ struct kvmvars {
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int Bflag, bflag, hflag, kflag, rflag, pflag;
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int debug = 0;
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int getprof __P((struct kvmvars *));
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int getprofhz __P((struct kvmvars *));
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void kern_readonly __P((int));
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int openfiles __P((char *, char *, struct kvmvars *));
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void setprof __P((struct kvmvars *kvp, int state));
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void dumpstate __P((struct kvmvars *kvp));
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void reset __P((struct kvmvars *kvp));
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static void usage __P((void));
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int
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main(int argc, char **argv)
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{
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extern char *optarg;
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extern int optind;
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int ch, mode, disp, accessmode;
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struct kvmvars kvmvars;
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char *system, *kmemf;
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@ -120,9 +129,7 @@ main(int argc, char **argv)
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break;
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default:
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(void)fprintf(stderr,
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"usage: kgmon [-Bbhrp] [-M core] [-N system]\n");
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exit(1);
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usage();
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}
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}
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argc -= optind;
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@ -166,9 +173,17 @@ main(int argc, char **argv)
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return (0);
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}
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static void
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usage()
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{
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fprintf(stderr, "usage: kgmon [-Bbhrp] [-M core] [-N system]\n");
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exit(1);
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}
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/*
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* Check that profiling is enabled and open any ncessary files.
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*/
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int
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openfiles(system, kmemf, kvp)
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char *system;
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char *kmemf;
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@ -182,11 +197,8 @@ openfiles(system, kmemf, kvp)
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mib[1] = KERN_PROF;
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mib[2] = GPROF_STATE;
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size = sizeof state;
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if (sysctl(mib, 3, &state, &size, NULL, 0) < 0) {
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(void)fprintf(stderr,
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"kgmon: profiling not defined in kernel.\n");
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exit(20);
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}
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if (sysctl(mib, 3, &state, &size, NULL, 0) < 0)
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errx(20, "profiling not defined in kernel");
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if (!(Bflag || bflag || hflag || rflag ||
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(pflag &&
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(state == GMON_PROF_HIRES || state == GMON_PROF_ON))))
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@ -207,28 +219,21 @@ openfiles(system, kmemf, kvp)
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kvp->kd = kvm_openfiles(system, kmemf, NULL, O_RDONLY,
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errbuf);
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}
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if (kvp->kd == NULL) {
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(void)fprintf(stderr, "kgmon: kvm_openfiles: %s\n",
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errbuf);
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exit(2);
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}
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if (kvp->kd == NULL)
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errx(2, "kvm_openfiles: %s", errbuf);
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kern_readonly(GMON_PROF_ON);
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}
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if (kvm_nlist(kvp->kd, nl) < 0) {
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(void)fprintf(stderr, "kgmon: %s: no namelist\n", system);
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exit(3);
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}
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if (!nl[N_GMONPARAM].n_value) {
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(void)fprintf(stderr,
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"kgmon: profiling not defined in kernel.\n");
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exit(20);
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}
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if (kvm_nlist(kvp->kd, nl) < 0)
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errx(3, "%s: no namelist", system);
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if (!nl[N_GMONPARAM].n_value)
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errx(20, "profiling not defined in kernel");
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return (openmode);
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}
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/*
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* Suppress options that require a writable kernel.
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*/
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void
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kern_readonly(mode)
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int mode;
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{
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@ -250,6 +255,7 @@ kern_readonly(mode)
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/*
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* Get the state of kernel profiling.
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*/
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int
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getprof(kvp)
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struct kvmvars *kvp;
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{
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@ -266,11 +272,9 @@ getprof(kvp)
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if (sysctl(mib, 3, &kvp->gpm, &size, NULL, 0) < 0)
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size = 0;
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}
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if (size != sizeof kvp->gpm) {
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(void)fprintf(stderr, "kgmon: cannot get gmonparam: %s\n",
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if (size != sizeof kvp->gpm)
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errx(4, "cannot get gmonparam: %s",
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kflag ? kvm_geterr(kvp->kd) : strerror(errno));
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exit (4);
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}
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return (kvp->gpm.state);
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}
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@ -304,7 +308,7 @@ setprof(kvp, state)
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== sz)
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return;
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bad:
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(void)fprintf(stderr, "kgmon: warning: cannot turn profiling %s\n",
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warnx("warning: cannot turn profiling %s",
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state == GMON_PROF_OFF ? "off" : "on");
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}
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@ -318,7 +322,7 @@ dumpstate(kvp)
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register FILE *fp;
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struct rawarc rawarc;
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struct tostruct *tos;
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u_long frompc, addr;
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u_long frompc;
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u_short *froms, *tickbuf;
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int mib[3], i;
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struct gmonhdr h;
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@ -327,7 +331,7 @@ dumpstate(kvp)
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setprof(kvp, GMON_PROF_OFF);
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fp = fopen("gmon.out", "w");
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if (fp == 0) {
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perror("gmon.out");
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warn("gmon.out");
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return;
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}
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@ -349,10 +353,8 @@ dumpstate(kvp)
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*/
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROF;
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if ((tickbuf = (u_short *)malloc(kvp->gpm.kcountsize)) == NULL) {
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fprintf(stderr, "kgmon: cannot allocate kcount space\n");
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exit (5);
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}
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if ((tickbuf = (u_short *)malloc(kvp->gpm.kcountsize)) == NULL)
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errx(5, "cannot allocate kcount space");
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if (kflag) {
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i = kvm_read(kvp->kd, (u_long)kvp->gpm.kcount, (void *)tickbuf,
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kvp->gpm.kcountsize);
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@ -362,25 +364,19 @@ dumpstate(kvp)
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if (sysctl(mib, 3, tickbuf, &i, NULL, 0) < 0)
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i = 0;
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}
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if (i != kvp->gpm.kcountsize) {
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(void)fprintf(stderr, "kgmon: read ticks: read %u, got %d: %s",
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if (i != kvp->gpm.kcountsize)
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errx(6, "read ticks: read %u, got %d: %s",
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kvp->gpm.kcountsize, i,
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kflag ? kvm_geterr(kvp->kd) : strerror(errno));
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exit(6);
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}
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if ((fwrite(tickbuf, kvp->gpm.kcountsize, 1, fp)) != 1) {
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perror("kgmon: writing tocks to gmon.out");
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exit(7);
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}
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if ((fwrite(tickbuf, kvp->gpm.kcountsize, 1, fp)) != 1)
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err(7, "writing tocks to gmon.out");
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free(tickbuf);
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/*
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* Write out the arc info.
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*/
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if ((froms = (u_short *)malloc(kvp->gpm.fromssize)) == NULL) {
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fprintf(stderr, "kgmon: cannot allocate froms space\n");
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exit (8);
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}
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if ((froms = (u_short *)malloc(kvp->gpm.fromssize)) == NULL)
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errx(8, "cannot allocate froms space");
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if (kflag) {
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i = kvm_read(kvp->kd, (u_long)kvp->gpm.froms, (void *)froms,
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kvp->gpm.fromssize);
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@ -390,16 +386,12 @@ dumpstate(kvp)
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if (sysctl(mib, 3, froms, &i, NULL, 0) < 0)
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i = 0;
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}
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if (i != kvp->gpm.fromssize) {
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(void)fprintf(stderr, "kgmon: read froms: read %u, got %d: %s",
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if (i != kvp->gpm.fromssize)
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errx(9, "read froms: read %u, got %d: %s",
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kvp->gpm.fromssize, i,
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kflag ? kvm_geterr(kvp->kd) : strerror(errno));
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exit(9);
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}
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if ((tos = (struct tostruct *)malloc(kvp->gpm.tossize)) == NULL) {
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fprintf(stderr, "kgmon: cannot allocate tos space\n");
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exit(10);
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}
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if ((tos = (struct tostruct *)malloc(kvp->gpm.tossize)) == NULL)
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errx(10, "cannot allocate tos space");
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if (kflag) {
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i = kvm_read(kvp->kd, (u_long)kvp->gpm.tos, (void *)tos,
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kvp->gpm.tossize);
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@ -409,14 +401,12 @@ dumpstate(kvp)
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if (sysctl(mib, 3, tos, &i, NULL, 0) < 0)
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i = 0;
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}
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if (i != kvp->gpm.tossize) {
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(void)fprintf(stderr, "kgmon: read tos: read %u, got %d: %s",
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if (i != kvp->gpm.tossize)
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errx(11, "read tos: read %u, got %d: %s",
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kvp->gpm.tossize, i,
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kflag ? kvm_geterr(kvp->kd) : strerror(errno));
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exit(11);
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}
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if (debug)
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(void)fprintf(stderr, "kgmon: lowpc 0x%x, textsize 0x%x\n",
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warnx("lowpc 0x%x, textsize 0x%x",
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kvp->gpm.lowpc, kvp->gpm.textsize);
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endfrom = kvp->gpm.fromssize / sizeof(*froms);
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for (fromindex = 0; fromindex < endfrom; ++fromindex) {
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@ -427,9 +417,8 @@ dumpstate(kvp)
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for (toindex = froms[fromindex]; toindex != 0;
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toindex = tos[toindex].link) {
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if (debug)
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(void)fprintf(stderr,
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"%s: [mcleanup] frompc 0x%x selfpc 0x%x count %d\n",
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"kgmon", frompc, tos[toindex].selfpc,
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warnx("[mcleanup] frompc 0x%x selfpc 0x%x count %d",
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frompc, tos[toindex].selfpc,
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tos[toindex].count);
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rawarc.raw_frompc = frompc;
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rawarc.raw_selfpc = (u_long)tos[toindex].selfpc;
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@ -454,8 +443,7 @@ getprofhz(kvp)
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profrate = 1;
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if (kvm_read(kvp->kd, nl[N_PROFHZ].n_value, &profrate,
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sizeof profrate) != sizeof profrate)
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(void)fprintf(stderr, "kgmon: get clockrate: %s\n",
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kvm_geterr(kvp->kd));
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warnx("get clockrate: %s", kvm_geterr(kvp->kd));
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return (profrate);
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}
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mib[0] = CTL_KERN;
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@ -463,8 +451,7 @@ getprofhz(kvp)
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clockrate.profhz = 1;
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size = sizeof clockrate;
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if (sysctl(mib, 2, &clockrate, &size, NULL, 0) < 0)
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(void)fprintf(stderr, "kgmon: get clockrate: %s\n",
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strerror(errno));
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warn("get clockrate");
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return (clockrate.profhz);
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}
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@ -486,53 +473,33 @@ reset(kvp)
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biggest = kvp->gpm.fromssize;
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if (kvp->gpm.tossize > biggest)
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biggest = kvp->gpm.tossize;
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if ((zbuf = (char *)malloc(biggest)) == NULL) {
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fprintf(stderr, "kgmon: cannot allocate zbuf space\n");
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exit(12);
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}
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if ((zbuf = (char *)malloc(biggest)) == NULL)
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errx(12, "cannot allocate zbuf space");
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bzero(zbuf, biggest);
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if (kflag) {
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if (kvm_write(kvp->kd, (u_long)kvp->gpm.kcount, zbuf,
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kvp->gpm.kcountsize) != kvp->gpm.kcountsize) {
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(void)fprintf(stderr, "kgmon: tickbuf zero: %s\n",
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kvm_geterr(kvp->kd));
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exit(13);
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}
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kvp->gpm.kcountsize) != kvp->gpm.kcountsize)
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errx(13, "tickbuf zero: %s", kvm_geterr(kvp->kd));
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if (kvm_write(kvp->kd, (u_long)kvp->gpm.froms, zbuf,
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kvp->gpm.fromssize) != kvp->gpm.fromssize) {
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(void)fprintf(stderr, "kgmon: froms zero: %s\n",
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kvm_geterr(kvp->kd));
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exit(14);
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}
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kvp->gpm.fromssize) != kvp->gpm.fromssize)
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errx(14, "froms zero: %s", kvm_geterr(kvp->kd));
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if (kvm_write(kvp->kd, (u_long)kvp->gpm.tos, zbuf,
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kvp->gpm.tossize) != kvp->gpm.tossize) {
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(void)fprintf(stderr, "kgmon: tos zero: %s\n",
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kvm_geterr(kvp->kd));
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exit(15);
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}
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kvp->gpm.tossize) != kvp->gpm.tossize)
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errx(15, "tos zero: %s", kvm_geterr(kvp->kd));
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return;
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}
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(void)seteuid(0);
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROF;
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mib[2] = GPROF_COUNT;
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if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.kcountsize) < 0) {
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(void)fprintf(stderr, "kgmon: tickbuf zero: %s\n",
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strerror(errno));
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exit(13);
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}
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if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.kcountsize) < 0)
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err(13, "tickbuf zero");
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mib[2] = GPROF_FROMS;
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if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.fromssize) < 0) {
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(void)fprintf(stderr, "kgmon: froms zero: %s\n",
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strerror(errno));
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exit(14);
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}
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if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.fromssize) < 0)
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err(14, "froms zero");
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mib[2] = GPROF_TOS;
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if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.tossize) < 0) {
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(void)fprintf(stderr, "kgmon: tos zero: %s\n",
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strerror(errno));
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exit(15);
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}
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if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.tossize) < 0)
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err(15, "tos zero");
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(void)seteuid(getuid());
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free(zbuf);
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}
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