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 #include <sys/types.h>
28 #include <sys/stat.h>
29 #include <fcntl.h>
30 #include <stdio.h>
31 #include <unistd.h>
32 #include "rcapd_stat.h"
33
34 /*
35 * Return the pid of the writer of the statistics file.
36 */
37 pid_t
stat_get_rcapd_pid(char * file)38 stat_get_rcapd_pid(char *file)
39 {
40 int fd;
41 rcapd_stat_hdr_t hdr;
42 char procfile[20];
43 struct stat st;
44
45 if ((fd = open(file, O_RDONLY)) < 0)
46 return (-1);
47
48 if (read(fd, &hdr, sizeof (hdr)) != sizeof (hdr)) {
49 (void) close(fd);
50 return (-1);
51 }
52 (void) close(fd);
53
54 (void) snprintf(procfile, 20, "/proc/%d/psinfo", (int)hdr.rs_pid);
55 if (stat(procfile, &st) == 0)
56 return (hdr.rs_pid);
57 else
58 return (-1);
59 }
60