OpenBSD-4.6/usr.sbin/sa/main.c
/* $OpenBSD: main.c,v 1.10 2005/05/04 09:02:54 jmc Exp $ */
/*
* Copyright (c) 1994 Christopher G. Demetriou
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LINT
static char copright[] =
"@(#) Copyright (c) 1994 Christopher G. Demetriou\n\
All rights reserved.\n";
static char rcsid[] = "$Id: main.c,v 1.10 2005/05/04 09:02:54 jmc Exp $";
#endif
/*
* sa: system accounting
*/
#include <sys/types.h>
#include <sys/acct.h>
#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "extern.h"
#include "pathnames.h"
static int acct_load(char *, int);
static u_quad_t decode_comp_t(comp_t);
static int cmp_comm(const char *, const char *);
static int cmp_usrsys(const DBT *, const DBT *);
static int cmp_avgusrsys(const DBT *, const DBT *);
static int cmp_dkio(const DBT *, const DBT *);
static int cmp_avgdkio(const DBT *, const DBT *);
static int cmp_cpumem(const DBT *, const DBT *);
static int cmp_avgcpumem(const DBT *, const DBT *);
static int cmp_calls(const DBT *, const DBT *);
int aflag, bflag, cflag, dflag, Dflag, fflag, iflag, jflag, kflag;
int Kflag, lflag, mflag, qflag, rflag, sflag, tflag, uflag, vflag;
int cutoff = 1;
static char *dfltargv[] = { _PATH_ACCT };
static int dfltargc = (sizeof(dfltargv)/sizeof(char *));
/* default to comparing by sum of user + system time */
cmpf_t sa_cmp = cmp_usrsys;
int
main(int argc, char **argv)
{
int ch;
int error = 0;
extern char *__progname;
while ((ch = getopt(argc, argv, "abcdDfijkKlmnqrstuv:")) != -1)
switch (ch) {
case 'a':
/* print all commands */
aflag = 1;
break;
case 'b':
/* sort by per-call user/system time average */
bflag = 1;
sa_cmp = cmp_avgusrsys;
break;
case 'c':
/* print percentage total time */
cflag = 1;
break;
case 'd':
/* sort by averge number of disk I/O ops */
dflag = 1;
sa_cmp = cmp_avgdkio;
break;
case 'D':
/* print and sort by total disk I/O ops */
Dflag = 1;
sa_cmp = cmp_dkio;
break;
case 'f':
/* force no interactive threshold comprison */
fflag = 1;
break;
case 'i':
/* do not read in summary file */
iflag = 1;
break;
case 'j':
/* instead of total minutes, give sec/call */
jflag = 1;
break;
case 'k':
/* sort by cpu-time average memory usage */
kflag = 1;
sa_cmp = cmp_avgcpumem;
break;
case 'K':
/* print and sort by cpu-storage integral */
sa_cmp = cmp_cpumem;
Kflag = 1;
break;
case 'l':
/* separate system and user time */
lflag = 1;
break;
case 'm':
/* print procs and time per-user */
mflag = 1;
break;
case 'n':
/* sort by number of calls */
sa_cmp = cmp_calls;
break;
case 'q':
/* quiet; error messages only */
qflag = 1;
break;
case 'r':
/* reverse order of sort */
rflag = 1;
break;
case 's':
/* merge accounting file into summaries */
sflag = 1;
break;
case 't':
/* report ratio of user and system times */
tflag = 1;
break;
case 'u':
/* first, print uid and command name */
uflag = 1;
break;
case 'v':
/* cull junk */
vflag = 1;
cutoff = atoi(optarg);
break;
case '?':
default:
(void)fprintf(stderr,
"usage: %s [-abcDdfijKklmnqrstu] [-v cutoff]"
" [file ...]\n", __progname);
exit(1);
}
argc -= optind;
argv += optind;
/* various argument checking */
if (fflag && !vflag)
errx(1, "only one of -f requires -v");
if (fflag && aflag)
errx(1, "only one of -a and -v may be specified");
/* XXX need more argument checking */
if (!uflag) {
/* initialize tables */
if ((sflag || (!mflag && !qflag)) && pacct_init() != 0)
errx(1, "process accounting initialization failed");
if ((sflag || (mflag && !qflag)) && usracct_init() != 0)
errx(1, "user accounting initialization failed");
}
if (argc == 0) {
argc = dfltargc;
argv = dfltargv;
}
/* for each file specified */
for (; argc > 0; argc--, argv++) {
int fd;
/*
* load the accounting data from the file.
* if it fails, go on to the next file.
*/
fd = acct_load(argv[0], sflag);
if (fd < 0)
continue;
if (!uflag && sflag) {
#ifndef DEBUG
sigset_t nmask, omask;
int unmask = 1;
/*
* block most signals so we aren't interrupted during
* the update.
*/
if (sigfillset(&nmask) == -1) {
warn("sigfillset");
unmask = 0;
error = 1;
}
if (unmask &&
(sigprocmask(SIG_BLOCK, &nmask, &omask) == -1)) {
warn("couldn't set signal mask ");
unmask = 0;
error = 1;
}
#endif /* DEBUG */
/*
* truncate the accounting data file ASAP, to avoid
* losing data. don't worry about errors in updating
* the saved stats; better to underbill than overbill,
* but we want every accounting record intact.
*/
if (ftruncate(fd, 0) == -1) {
warn("couldn't truncate %s", *argv);
error = 1;
}
/*
* update saved user and process accounting data.
* note errors for later.
*/
if (pacct_update() != 0 || usracct_update() != 0)
error = 1;
#ifndef DEBUG
/*
* restore signals
*/
if (unmask &&
(sigprocmask(SIG_SETMASK, &omask, NULL) == -1)) {
warn("couldn't restore signal mask");
error = 1;
}
#endif /* DEBUG */
}
/*
* close the opened accounting file
*/
if (close(fd) == -1) {
warn("close %s", *argv);
error = 1;
}
}
if (!uflag && !qflag) {
/* print any results we may have obtained. */
if (!mflag)
pacct_print();
else
usracct_print();
}
if (!uflag) {
/* finally, deallocate databases */
if (sflag || (!mflag && !qflag))
pacct_destroy();
if (sflag || (mflag && !qflag))
usracct_destroy();
}
exit(error);
}
static int
acct_load(char *pn, int wr)
{
struct acct ac;
struct cmdinfo ci;
ssize_t rv;
int fd, i;
/*
* open the file
*/
fd = open(pn, wr ? O_RDWR : O_RDONLY, 0);
if (fd == -1) {
warn("open %s %s", pn, wr ? "for read/write" : "read-only");
return (-1);
}
/*
* read all we can; don't stat and open because more processes
* could exit, and we'd miss them
*/
while (1) {
/* get one accounting entry and punt if there's an error */
rv = read(fd, &ac, sizeof(struct acct));
if (rv == -1)
warn("error reading %s", pn);
else if (rv > 0 && rv < sizeof(struct acct))
warnx("short read of accounting data in %s", pn);
if (rv != sizeof(struct acct))
break;
/* decode it */
ci.ci_calls = 1;
for (i = 0; i < sizeof(ac.ac_comm) && ac.ac_comm[i] != '\0';
i++) {
char c = ac.ac_comm[i];
if (!isascii(c) || iscntrl(c)) {
ci.ci_comm[i] = '?';
ci.ci_flags |= CI_UNPRINTABLE;
} else
ci.ci_comm[i] = c;
}
if (ac.ac_flag & AFORK)
ci.ci_comm[i++] = '*';
ci.ci_comm[i++] = '\0';
ci.ci_etime = decode_comp_t(ac.ac_etime);
ci.ci_utime = decode_comp_t(ac.ac_utime);
ci.ci_stime = decode_comp_t(ac.ac_stime);
ci.ci_uid = ac.ac_uid;
ci.ci_mem = ac.ac_mem;
ci.ci_io = decode_comp_t(ac.ac_io) / AHZ;
if (!uflag) {
/* and enter it into the usracct and pacct databases */
if (sflag || (!mflag && !qflag))
pacct_add(&ci);
if (sflag || (mflag && !qflag))
usracct_add(&ci);
} else if (!qflag)
printf("%6u %12.2f cpu %12lluk mem %12llu io %s\n",
ci.ci_uid,
(ci.ci_utime + ci.ci_stime) / (double) AHZ,
ci.ci_mem, ci.ci_io, ci.ci_comm);
}
/* finally, return the file descriptor for possible truncation */
return (fd);
}
static u_quad_t
decode_comp_t(comp_t comp)
{
u_quad_t rv;
/*
* for more info on the comp_t format, see:
* /usr/src/sys/kern/kern_acct.c
* /usr/src/sys/sys/acct.h
* /usr/src/usr.bin/lastcomm/lastcomm.c
*/
rv = comp & 0x1fff; /* 13 bit fraction */
comp >>= 13; /* 3 bit base-8 exponent */
while (comp--)
rv <<= 3;
return (rv);
}
/* sort commands, doing the right thing in terms of reversals */
static int
cmp_comm(const char *s1, const char *s2)
{
int rv;
rv = strcmp(s1, s2);
if (rv == 0)
rv = -1;
return (rflag ? rv : -rv);
}
/* sort by total user and system time */
static int
cmp_usrsys(const DBT *d1, const DBT *d2)
{
struct cmdinfo c1, c2;
u_quad_t t1, t2;
memcpy(&c1, d1->data, sizeof(c1));
memcpy(&c2, d2->data, sizeof(c2));
t1 = c1.ci_utime + c1.ci_stime;
t2 = c2.ci_utime + c2.ci_stime;
if (t1 < t2)
return -1;
else if (t1 == t2)
return (cmp_comm(c1.ci_comm, c2.ci_comm));
else
return 1;
}
/* sort by average user and system time */
static int
cmp_avgusrsys(const DBT *d1, const DBT *d2)
{
struct cmdinfo c1, c2;
double t1, t2;
memcpy(&c1, d1->data, sizeof(c1));
memcpy(&c2, d2->data, sizeof(c2));
t1 = c1.ci_utime + c1.ci_stime;
t1 /= (double) (c1.ci_calls ? c1.ci_calls : 1);
t2 = c2.ci_utime + c2.ci_stime;
t2 /= (double) (c2.ci_calls ? c2.ci_calls : 1);
if (t1 < t2)
return -1;
else if (t1 == t2)
return (cmp_comm(c1.ci_comm, c2.ci_comm));
else
return 1;
}
/* sort by total number of disk I/O operations */
static int
cmp_dkio(const DBT *d1, const DBT *d2)
{
struct cmdinfo c1, c2;
memcpy(&c1, d1->data, sizeof(c1));
memcpy(&c2, d2->data, sizeof(c2));
if (c1.ci_io < c2.ci_io)
return -1;
else if (c1.ci_io == c2.ci_io)
return (cmp_comm(c1.ci_comm, c2.ci_comm));
else
return 1;
}
/* sort by average number of disk I/O operations */
static int
cmp_avgdkio(const DBT *d1, const DBT *d2)
{
struct cmdinfo c1, c2;
double n1, n2;
memcpy(&c1, d1->data, sizeof(c1));
memcpy(&c2, d2->data, sizeof(c2));
n1 = (double) c1.ci_io / (double) (c1.ci_calls ? c1.ci_calls : 1);
n2 = (double) c2.ci_io / (double) (c2.ci_calls ? c2.ci_calls : 1);
if (n1 < n2)
return -1;
else if (n1 == n2)
return (cmp_comm(c1.ci_comm, c2.ci_comm));
else
return 1;
}
/* sort by the cpu-storage integral */
static int
cmp_cpumem(const DBT *d1, const DBT *d2)
{
struct cmdinfo c1, c2;
memcpy(&c1, d1->data, sizeof(c1));
memcpy(&c2, d2->data, sizeof(c2));
if (c1.ci_mem < c2.ci_mem)
return -1;
else if (c1.ci_mem == c2.ci_mem)
return (cmp_comm(c1.ci_comm, c2.ci_comm));
else
return 1;
}
/* sort by the cpu-time average memory usage */
static int
cmp_avgcpumem(const DBT *d1, const DBT *d2)
{
struct cmdinfo c1, c2;
u_quad_t t1, t2;
double n1, n2;
memcpy(&c1, d1->data, sizeof(c1));
memcpy(&c2, d2->data, sizeof(c2));
t1 = c1.ci_utime + c1.ci_stime;
t2 = c2.ci_utime + c2.ci_stime;
n1 = (double) c1.ci_mem / (double) (t1 ? t1 : 1);
n2 = (double) c2.ci_mem / (double) (t2 ? t2 : 1);
if (n1 < n2)
return -1;
else if (n1 == n2)
return (cmp_comm(c1.ci_comm, c2.ci_comm));
else
return 1;
}
/* sort by the number of invocations */
static int
cmp_calls(const DBT *d1, const DBT *d2)
{
struct cmdinfo c1, c2;
memcpy(&c1, d1->data, sizeof(c1));
memcpy(&c2, d2->data, sizeof(c2));
if (c1.ci_calls < c2.ci_calls)
return -1;
else if (c1.ci_calls == c2.ci_calls)
return (cmp_comm(c1.ci_comm, c2.ci_comm));
else
return 1;
}