1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <sys/types.h>
30#include <sys/stat.h>
31#include <fcntl.h>
32#include <stdio.h>
33#include <unistd.h>
34#include "rcapd_stat.h"
35
36/*
37 * Return the pid of the writer of the statistics file.
38 */
39pid_t
40stat_get_rcapd_pid(char *file)
41{
42	int fd;
43	rcapd_stat_hdr_t hdr;
44	char procfile[20];
45	struct stat st;
46
47	if ((fd = open(file, O_RDONLY)) < 0)
48		return (-1);
49
50	if (read(fd, &hdr, sizeof (hdr)) != sizeof (hdr)) {
51		(void) close(fd);
52		return (-1);
53	}
54	(void) close(fd);
55
56	(void) snprintf(procfile, 20, "/proc/%d/psinfo", (int)hdr.rs_pid);
57	if (stat(procfile, &st) == 0)
58		return (hdr.rs_pid);
59	else
60		return (-1);
61}
62