// SPDX-License-Identifier: GPL-2.0
|
#define _GNU_SOURCE
|
#include <errno.h>
|
#include <fcntl.h>
|
#include <sched.h>
|
#include <stdio.h>
|
#include <stdbool.h>
|
#include <sys/stat.h>
|
#include <sys/syscall.h>
|
#include <sys/types.h>
|
#include <sys/wait.h>
|
#include <time.h>
|
#include <unistd.h>
|
#include <string.h>
|
|
#include "log.h"
|
#include "timens.h"
|
|
#define OFFSET (36000)
|
|
int main(int argc, char *argv[])
|
{
|
struct timespec now, tst;
|
int status, i;
|
pid_t pid;
|
|
if (argc > 1) {
|
if (sscanf(argv[1], "%ld", &now.tv_sec) != 1)
|
return pr_perror("sscanf");
|
|
for (i = 0; i < 2; i++) {
|
_gettime(CLOCK_MONOTONIC, &tst, i);
|
if (abs(tst.tv_sec - now.tv_sec) > 5)
|
return pr_fail("%ld %ld\n", now.tv_sec, tst.tv_sec);
|
}
|
return 0;
|
}
|
|
nscheck();
|
|
ksft_set_plan(1);
|
|
clock_gettime(CLOCK_MONOTONIC, &now);
|
|
if (unshare_timens())
|
return 1;
|
|
if (_settime(CLOCK_MONOTONIC, OFFSET))
|
return 1;
|
|
for (i = 0; i < 2; i++) {
|
_gettime(CLOCK_MONOTONIC, &tst, i);
|
if (abs(tst.tv_sec - now.tv_sec) > 5)
|
return pr_fail("%ld %ld\n",
|
now.tv_sec, tst.tv_sec);
|
}
|
|
if (argc > 1)
|
return 0;
|
|
pid = fork();
|
if (pid < 0)
|
return pr_perror("fork");
|
|
if (pid == 0) {
|
char now_str[64];
|
char *cargv[] = {"exec", now_str, NULL};
|
char *cenv[] = {NULL};
|
|
/* Check that a child process is in the new timens. */
|
for (i = 0; i < 2; i++) {
|
_gettime(CLOCK_MONOTONIC, &tst, i);
|
if (abs(tst.tv_sec - now.tv_sec - OFFSET) > 5)
|
return pr_fail("%ld %ld\n",
|
now.tv_sec + OFFSET, tst.tv_sec);
|
}
|
|
/* Check for proper vvar offsets after execve. */
|
snprintf(now_str, sizeof(now_str), "%ld", now.tv_sec + OFFSET);
|
execve("/proc/self/exe", cargv, cenv);
|
return pr_perror("execve");
|
}
|
|
if (waitpid(pid, &status, 0) != pid)
|
return pr_perror("waitpid");
|
|
if (status)
|
ksft_exit_fail();
|
|
ksft_test_result_pass("exec\n");
|
ksft_exit_pass();
|
return 0;
|
}
|
