Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596// 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 (labs(tst.tv_sec - now.tv_sec) > 5) return pr_fail("%ld %ld\n", now.tv_sec, tst.tv_sec); } return 0; }
ksft_print_header();
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 (labs(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 (labs(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;}