procstat_bin.c revision 174199 
1/*-
2 * Copyright (c) 2007 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/usr.bin/procstat/procstat_bin.c 174199 2007-12-02 23:31:45Z rwatson $
27 */
28
29#include <sys/types.h>
30#include <sys/sysctl.h>
31
32#include <err.h>
33#include <errno.h>
34#include <limits.h>
35#include <stdio.h>
36#include <string.h>
37
38#include "procstat.h"
39
40void
41procstat_bin(pid_t pid, struct kinfo_proc *kipp)
42{
43	char pathname[PATH_MAX];
44	int error, name[4];
45	size_t len;
46
47	if (!hflag)
48		printf("%5s %-70s\n", "PID", "PATH");
49
50	name[0] = CTL_KERN;
51	name[1] = KERN_PROC;
52	name[2] = KERN_PROC_PATHNAME;
53	name[3] = pid;
54
55	len = sizeof(pathname);
56	error = sysctl(name, 4, pathname, &len, NULL, 0);
57	if (error < 0 && errno != ESRCH) {
58		warn("sysctl: kern.proc.pathname: %d", pid);
59		return;
60	}
61	if (error < 0)
62		return;
63	if (len == 0 || strlen(pathname) == 0)
64		strcpy(pathname, "-");
65
66	printf("%5d ", pid);
67	printf("%s\n", pathname);
68}
69