2 * Copyright (c) 2009-2010 Todd C. Miller <Todd.Miller@courtesan.com>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #include <sys/param.h>
20 #include <sys/types.h>
31 #endif /* STDC_HEADERS */
33 # if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
37 #endif /* HAVE_STRING_H */
40 #endif /* HAVE_STRINGS_H */
42 #if TIME_WITH_SYS_TIME
47 # include <sys/sysctl.h>
54 * Fill in a struct timeval with the time the system booted.
55 * Returns 1 on success and 0 on failure.
58 #if defined(__linux__)
68 /* read btime from /proc/stat */
69 fp = fopen("/proc/stat", "r");
71 while ((len = getline(&line, &linesize, fp)) != -1) {
72 if (strncmp(line, "btime ", 6) == 0) {
73 tv->tv_sec = atoi(line + 6);
85 #elif defined(HAVE_SYSCTL) && defined(KERN_BOOTTIME)
95 mib[1] = KERN_BOOTTIME;
97 if (sysctl(mib, 2, tv, &size, NULL, 0) != -1)
103 #elif defined(HAVE_GETUTXID)
110 struct utmpx *ut, key;
112 memset(&key, 0, sizeof(key));
113 key.ut_type = BOOT_TIME;
114 if ((ut = getutxid(&key)) != NULL) {
115 tv->tv_sec = ut->ut_tv.tv_sec;
116 tv->tv_usec = ut->ut_tv.tv_usec;
122 #elif defined(HAVE_GETUTID)
129 struct utmp *ut, key;
131 memset(&key, 0, sizeof(key));
132 key.ut_type = BOOT_TIME;
133 if ((ut = getutid(&key)) != NULL) {
134 tv->tv_sec = ut->ut_time;