154 lines
3.8 KiB
C
154 lines
3.8 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2017 Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <config.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sudo_compat.h>
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#include <sudo_util.h>
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#include <sudo_fatal.h>
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#include <timestamp.h>
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sudo_dso_public int main(int argc, char *argv[]);
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#if defined(sudo_kinfo_proc) || defined(__linux__) || defined(HAVE_STRUCT_PSINFO_PR_TTYDEV) || defined(HAVE_PSTAT_GETPROC) || defined(__gnu_hurd__)
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#ifdef __linux__
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static int
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get_now(struct timespec *now)
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{
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const char *errstr;
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char buf[1024];
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time_t seconds;
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int ret = -1;
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FILE *fp;
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/* Linux process start time is relative to boot time. */
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fp = fopen("/proc/stat", "r");
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if (fp != NULL) {
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while (fgets(buf, sizeof(buf), fp) != NULL) {
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if (strncmp(buf, "btime ", 6) != 0)
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continue;
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buf[strcspn(buf, "\n")] = '\0';
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/* Boot time is in seconds since the epoch. */
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seconds = sudo_strtonum(buf + 6, 0, TIME_T_MAX, &errstr);
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if (errstr != NULL)
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return -1;
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/* Instead of the real time, "now" is relative to boot time. */
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if (sudo_gettime_real(now) == -1)
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return -1;
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now->tv_sec -= seconds;
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ret = 0;
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break;
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}
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fclose(fp);
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}
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return ret;
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}
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#else
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static int
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get_now(struct timespec *now)
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{
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/* Process start time is relative to wall clock time. */
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return sudo_gettime_real(now);
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}
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#endif
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int
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main(int argc, char *argv[])
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{
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int ch, ntests = 0, errors = 0;
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struct timespec now, then, delta;
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time_t timeoff = 0;
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pid_t pids[2];
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char *faketime;
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unsigned int i;
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initprogname(argc > 0 ? argv[0] : "check_starttime");
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while ((ch = getopt(argc, argv, "v")) != -1) {
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switch (ch) {
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case 'v':
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/* ignored */
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break;
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default:
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fprintf(stderr, "usage: %s [-v]\n", getprogname());
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return EXIT_FAILURE;
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}
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}
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argc -= optind;
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argv += optind;
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if (get_now(&now) == -1)
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sudo_fatal_nodebug("unable to get current time");
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pids[0] = getpid();
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pids[1] = getppid();
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/* Debian CI pipeline runs tests using faketime. */
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faketime = getenv("FAKETIME");
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if (faketime != NULL)
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timeoff = sudo_strtonum(faketime, TIME_T_MIN, TIME_T_MAX, NULL);
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for (i = 0; i < 2; i++) {
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ntests++;
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if (get_starttime(pids[i], &then) == -1) {
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printf("%s: test %d: unable to get start time for pid %d\n",
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getprogname(), ntests, (int)pids[i]);
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errors++;
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}
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if (i != 0)
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continue;
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/* Verify our own process start time, allowing for some drift. */
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ntests++;
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sudo_timespecsub(&then, &now, &delta);
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delta.tv_sec += timeoff;
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if (delta.tv_sec > 30 || delta.tv_sec < -30) {
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printf("%s: test %d: unexpected start time for pid %d: %s",
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getprogname(), ntests, (int)pids[i], ctime(&then.tv_sec));
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errors++;
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}
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}
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if (ntests != 0) {
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printf("%s: %d tests run, %d errors, %d%% success rate\n",
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getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
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}
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return errors;
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}
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#else
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int
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main(int argc, char *argv[])
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{
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/* get_starttime not supported */
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return 0;
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}
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#endif
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