2 * Copyright (c) 2009-2013 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/types.h>
30 #endif /* STDC_HEADERS */
32 # if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
36 #endif /* HAVE_STRING_H */
39 #endif /* HAVE_STRINGS_H */
41 #if TIME_WITH_SYS_TIME
45 # if defined(HAVE_SYSCTL) && defined(KERN_BOOTTIME)
46 # include <sys/sysctl.h>
47 # elif defined(HAVE_GETUTXID)
49 # elif defined(HAVE_GETUTID)
52 #endif /* !__linux__ */
55 #include "sudo_debug.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__)
64 get_boottime(struct timeval *tv)
66 char *ep, *line = NULL;
70 debug_decl(get_boottime, SUDO_DEBUG_UTIL)
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) {
78 long long llval = strtoll(line + 6, &ep, 10);
79 if (line[6] != '\0' && *ep == '\0' && (time_t)llval == llval) {
80 tv->tv_sec = (time_t)llval;
85 long lval = strtol(line + 6, &ep, 10);
86 if (line[6] != '\0' && *ep == '\0' && (time_t)lval == lval) {
87 tv->tv_sec = (time_t)llval;
101 #elif defined(HAVE_SYSCTL) && defined(KERN_BOOTTIME)
104 get_boottime(struct timeval *tv)
108 debug_decl(get_boottime, SUDO_DEBUG_UTIL)
111 mib[1] = KERN_BOOTTIME;
113 if (sysctl(mib, 2, tv, &size, NULL, 0) != -1)
114 debug_return_bool(1);
116 debug_return_bool(0);
119 #elif defined(HAVE_GETUTXID)
122 get_boottime(struct timeval *tv)
124 struct utmpx *ut, key;
125 debug_decl(get_boottime, SUDO_DEBUG_UTIL)
127 memset(&key, 0, sizeof(key));
128 key.ut_type = BOOT_TIME;
130 if ((ut = getutxid(&key)) != NULL) {
131 tv->tv_sec = ut->ut_tv.tv_sec;
132 tv->tv_usec = ut->ut_tv.tv_usec;
135 debug_return_bool(ut != NULL);
138 #elif defined(HAVE_GETUTID)
141 get_boottime(struct timeval *tv)
143 struct utmp *ut, key;
144 debug_decl(get_boottime, SUDO_DEBUG_UTIL)
146 memset(&key, 0, sizeof(key));
147 key.ut_type = BOOT_TIME;
149 if ((ut = getutid(&key)) != NULL) {
150 tv->tv_sec = ut->ut_time;
154 debug_return_bool(ut != NULL);
160 get_boottime(struct timeval *tv)
162 debug_decl(get_boottime, SUDO_DEBUG_UTIL)
163 debug_return_bool(0);