freebsd-dev/usr.bin/procstat/procstat.c
David Malone 97ce0ae60f WARNS fixes: mainly constness and avoid comparing signed with
unsigned by making array indicies unsigned. Also note one or two
unused parameters.
2008-02-08 11:03:05 +00:00

254 lines
5.5 KiB
C

/*-
* Copyright (c) 2007 Robert N. M. Watson
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/user.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
#include <unistd.h>
#include "procstat.h"
static int aflag, bflag, cflag, fflag, kflag, sflag, tflag, vflag;
int hflag;
static void
usage(void)
{
fprintf(stderr, "usage: procstat [-h] [-w interval] [-b | -c | -f | "
"-k | -s | -t | -v]\n");
fprintf(stderr, " [-a | pid ...]\n");
exit(EX_USAGE);
}
static void
procstat(pid_t pid, struct kinfo_proc *kipp)
{
if (bflag)
procstat_bin(pid, kipp);
else if (cflag)
procstat_args(pid, kipp);
else if (fflag)
procstat_files(pid, kipp);
else if (kflag)
procstat_kstack(pid, kipp, kflag);
else if (sflag)
procstat_cred(pid, kipp);
else if (tflag)
procstat_threads(pid, kipp);
else if (vflag)
procstat_vm(pid, kipp);
else
procstat_basic(pid, kipp);
}
/*
* Sort processes first by pid and then tid.
*/
static int
kinfo_proc_compare(const void *a, const void *b)
{
int i;
i = ((const struct kinfo_proc *)a)->ki_pid -
((const struct kinfo_proc *)b)->ki_pid;
if (i != 0)
return (i);
i = ((const struct kinfo_proc *)a)->ki_tid -
((const struct kinfo_proc *)b)->ki_tid;
return (i);
}
void
kinfo_proc_sort(struct kinfo_proc *kipp, int count)
{
qsort(kipp, count, sizeof(*kipp), kinfo_proc_compare);
}
int
main(int argc, char *argv[])
{
int ch, interval, name[4], tmp;
unsigned int i;
struct kinfo_proc *kipp;
size_t len;
long l;
pid_t pid;
char *dummy;
interval = 0;
while ((ch = getopt(argc, argv, "abcfkhstvw:")) != -1) {
switch (ch) {
case 'a':
aflag++;
break;
case 'b':
bflag++;
break;
case 'c':
cflag++;
break;
case 'f':
fflag++;
break;
case 'k':
kflag++;
break;
case 'h':
hflag++;
break;
case 's':
sflag++;
break;
case 't':
tflag++;
break;
case 'v':
vflag++;
break;
case 'w':
l = strtol(optarg, &dummy, 10);
if (*dummy != '\0')
usage();
if (l < 1 || l > INT_MAX)
usage();
interval = l;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
/* We require that either 0 or 1 mode flags be set. */
tmp = bflag + cflag + fflag + (kflag ? 1 : 0) + sflag + tflag + vflag;
if (!(tmp == 0 || tmp == 1))
usage();
/* We allow -k to be specified up to twice, but not more. */
if (kflag > 2)
usage();
/* Must specify either the -a flag or a list of pids. */
if (!(aflag == 1 && argc == 0) && !(aflag == 0 && argc > 0))
usage();
do {
if (aflag) {
name[0] = CTL_KERN;
name[1] = KERN_PROC;
name[2] = KERN_PROC_PROC;
len = 0;
if (sysctl(name, 3, NULL, &len, NULL, 0) < 0)
err(-1, "sysctl: kern.proc.all");
kipp = malloc(len);
if (kipp == NULL)
err(-1, "malloc");
if (sysctl(name, 3, kipp, &len, NULL, 0) < 0) {
free(kipp);
err(-1, "sysctl: kern.proc.all");
}
if (len % sizeof(*kipp) != 0)
err(-1, "kinfo_proc mismatch");
if (kipp->ki_structsize != sizeof(*kipp))
err(-1, "kinfo_proc structure mismatch");
kinfo_proc_sort(kipp, len / sizeof(*kipp));
for (i = 0; i < len / sizeof(*kipp); i++) {
procstat(kipp[i].ki_pid, &kipp[i]);
/* Suppress header after first process. */
hflag = 1;
}
free(kipp);
}
for (i = 0; i < (unsigned int)argc; i++) {
l = strtol(argv[i], &dummy, 10);
if (*dummy != '\0')
usage();
if (l < 0)
usage();
pid = l;
name[0] = CTL_KERN;
name[1] = KERN_PROC;
name[2] = KERN_PROC_PID;
name[3] = pid;
len = 0;
if (sysctl(name, 4, NULL, &len, NULL, 0) < 0)
err(-1, "sysctl: kern.proc.pid: %d", pid);
kipp = malloc(len);
if (kipp == NULL)
err(-1, "malloc");
if (sysctl(name, 4, kipp, &len, NULL, 0) < 0) {
free(kipp);
err(-1, "sysctl: kern.proc.pid: %d", pid);
}
if (len != sizeof(*kipp))
err(-1, "kinfo_proc mismatch");
if (kipp->ki_structsize != sizeof(*kipp))
errx(-1, "kinfo_proc structure mismatch");
if (kipp->ki_pid != pid)
errx(-1, "kinfo_proc pid mismatch");
procstat(pid, kipp);
free(kipp);
/* Suppress header after first process. */
hflag = 1;
}
if (interval)
sleep(interval);
} while (interval);
exit(0);
}