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freebsd-nq/usr.bin/procstat/procstat.c
Mikolaj Golub 948baa409b Make use of newly added libprocstat(3) ability to extract procstat 
info from a process core file.

So now one can run procstat(1) on a process core e.g. to get a list of
files opened by a process when it crashed:

root@lisa:/ # procstat -f /root/vi.core
  PID COMM               FD T V FLAGS     REF  OFFSET PRO NAME
  658 vi               text v r r--------   -       - -   /usr/bin/vi
  658 vi               ctty v c rw-------   -       - -   /dev/pts/0
  658 vi                cwd v d r--------   -       - -   /root
  658 vi               root v d r--------   -       - -   /
  658 vi                  0 v c rw-------  11    3208 -   /dev/pts/0
  658 vi                  1 v c rw-------  11    3208 -   /dev/pts/0
  658 vi                  2 v c rw-------  11    3208 -   /dev/pts/0
  658 vi                  3 v r r----n-l-   1       0 -   /tmp/vi.0AYKz3Lps7
  658 vi                  4 v r rw-------   1       0 -   /var/tmp/vi.recover/vi.GaGYsz
  658 vi                  5 v r rw-------   1       0 -   -

PR:		kern/173723
Suggested by:	jhb
MFC after:	1 month
2013-04-20 08:22:09 +00:00

293 lines
6.1 KiB
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/*-
* Copyright (c) 2007, 2011 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/param.h>
#include <sys/sysctl.h>
#include <sys/user.h>
#include <err.h>
#include <libprocstat.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
#include <unistd.h>
#include "procstat.h"
static int aflag, bflag, cflag, eflag, fflag, iflag, jflag, kflag, lflag, sflag;
static int tflag, vflag, xflag;
int hflag, nflag, Cflag;
static void
usage(void)
{
fprintf(stderr, "usage: procstat [-h] [-C] [-M core] [-N system] "
"[-w interval] \n");
fprintf(stderr, " [-b | -c | -e | -f | -i | -j | -k | "
"-l | -s | -t | -v | -x] [-a | pid | core ...]\n");
exit(EX_USAGE);
}
static void
procstat(struct procstat *prstat, struct kinfo_proc *kipp)
{
if (bflag)
procstat_bin(prstat, kipp);
else if (cflag)
procstat_args(prstat, kipp);
else if (eflag)
procstat_env(prstat, kipp);
else if (fflag)
procstat_files(prstat, kipp);
else if (iflag)
procstat_sigs(prstat, kipp);
else if (jflag)
procstat_threads_sigs(prstat, kipp);
else if (kflag)
procstat_kstack(prstat, kipp, kflag);
else if (lflag)
procstat_rlimit(prstat, kipp);
else if (sflag)
procstat_cred(prstat, kipp);
else if (tflag)
procstat_threads(prstat, kipp);
else if (vflag)
procstat_vm(prstat, kipp);
else if (xflag)
procstat_auxv(prstat, kipp);
else
procstat_basic(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, tmp;
int i;
struct kinfo_proc *p;
struct procstat *prstat, *cprstat;
long l;
pid_t pid;
char *dummy;
char *nlistf, *memf;
int cnt;
interval = 0;
memf = nlistf = NULL;
while ((ch = getopt(argc, argv, "CN:M:abcefijklhstvw:x")) != -1) {
switch (ch) {
case 'C':
Cflag++;
break;
case 'M':
memf = optarg;
break;
case 'N':
nlistf = optarg;
break;
case 'a':
aflag++;
break;
case 'b':
bflag++;
break;
case 'c':
cflag++;
break;
case 'e':
eflag++;
break;
case 'f':
fflag++;
break;
case 'i':
iflag++;
break;
case 'j':
jflag++;
break;
case 'k':
kflag++;
break;
case 'l':
lflag++;
break;
case 'n':
nflag++;
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 'x':
xflag++;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
/* We require that either 0 or 1 mode flags be set. */
tmp = bflag + cflag + eflag + fflag + iflag + jflag + (kflag ? 1 : 0) +
lflag + sflag + tflag + vflag + xflag;
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();
/* Only allow -C with -f. */
if (Cflag && !fflag)
usage();
if (memf != NULL)
prstat = procstat_open_kvm(nlistf, memf);
else
prstat = procstat_open_sysctl();
if (prstat == NULL)
errx(1, "procstat_open()");
do {
if (aflag) {
p = procstat_getprocs(prstat, KERN_PROC_PROC, 0, &cnt);
if (p == NULL)
errx(1, "procstat_getprocs()");
kinfo_proc_sort(p, cnt);
for (i = 0; i < cnt; i++) {
procstat(prstat, &p[i]);
/* Suppress header after first process. */
hflag = 1;
}
procstat_freeprocs(prstat, p);
}
for (i = 0; i < argc; i++) {
l = strtol(argv[i], &dummy, 10);
if (*dummy == '\0') {
if (l < 0)
usage();
pid = l;
p = procstat_getprocs(prstat, KERN_PROC_PID, pid, &cnt);
if (p == NULL)
errx(1, "procstat_getprocs()");
if (cnt != 0)
procstat(prstat, p);
procstat_freeprocs(prstat, p);
} else {
cprstat = procstat_open_core(argv[i]);
if (cprstat == NULL) {
warnx("procstat_open()");
continue;
}
p = procstat_getprocs(cprstat, KERN_PROC_PID,
-1, &cnt);
if (p == NULL)
errx(1, "procstat_getprocs()");
if (cnt != 0)
procstat(cprstat, p);
procstat_freeprocs(cprstat, p);
procstat_close(cprstat);
}
/* Suppress header after first process. */
hflag = 1;
}
if (interval)
sleep(interval);
} while (interval);
procstat_close(prstat);
exit(0);
}
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