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