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
52 # include <sys/sysctl.h>
58 * Fill in a struct timeval with the time the system booted.
59 * Returns 1 on success and 0 on failure.
62 #if defined(__linux__)
72 /* read btime from /proc/stat */
73 fp = fopen("/proc/stat", "r");
75 while ((len = getline(&line, &linesize, fp)) != -1) {
76 if (strncmp(line, "btime ", 6) == 0) {
77 tv->tv_sec = atoi(line + 6);
89 #elif defined(HAVE_SYSCTL) && defined(KERN_BOOTTIME)
99 mib[1] = KERN_BOOTTIME;
101 if (sysctl(mib, 2, tv, &size, NULL, 0) != -1)
107 #elif defined(HAVE_GETUTXID)
113 struct utmpx *ut, key;
115 memset(&key, 0, sizeof(key));
116 key.ut_type = BOOT_TIME;
117 if ((ut = getutxid(&key)) != NULL) {
118 tv->tv_sec = ut->ut_tv.tv_sec;
119 tv->tv_usec = ut->ut_tv.tv_usec;
125 #elif defined(HAVE_GETUTID)
131 struct utmp *ut, key;
133 memset(&key, 0, sizeof(key));
134 key.ut_type = BOOT_TIME;
135 if ((ut = getutid(&key)) != NULL) {
136 tv->tv_sec = ut->ut_time;