mirror of
https://github.com/checkpoint-restore/criu.git
synced 2026-07-21 01:06:58 +00:00
93dd984ca0
Acked-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Adrian Reber <areber@redhat.com>
125 lines
2.3 KiB
C
125 lines
2.3 KiB
C
#include <stdbool.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <signal.h>
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#include <stdio.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sched.h>
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#include <sys/wait.h>
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#include <stdlib.h>
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#include <limits.h>
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#include "zdtmtst.h"
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#ifndef CLONE_NEWNS
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#define CLONE_NEWNS 0x00020000
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#endif
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const char *test_doc = "Check shared non-root bind-mounts";
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const char *test_author = "Andrew Vagin <avagin@gmail.com>";
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char *dirname;
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TEST_OPTION(dirname, string, "directory name", 1);
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int main(int argc, char **argv)
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{
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char path[PATH_MAX], bpath[PATH_MAX], spath[PATH_MAX];
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pid_t pid;
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int status;
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task_waiter_t t;
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test_init(argc, argv);
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task_waiter_init(&t);
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snprintf(path, sizeof(path), "%s/test", dirname);
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snprintf(bpath, sizeof(bpath), "%s/test.bind", dirname);
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snprintf(spath, sizeof(spath), "%s/test/sub", dirname);
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if (mkdir(dirname, 0700)) {
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pr_perror("mkdir");
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return 1;
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}
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if (mount(NULL, "/", NULL, MS_SHARED, NULL)) {
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pr_perror("mount");
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return 1;
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}
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#ifdef SHARED_BIND02
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/* */
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if (mount(dirname, dirname, "tmpfs", 0, NULL) || mount(NULL, dirname, NULL, MS_SHARED, NULL)) {
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pr_perror("mount");
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return 1;
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}
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#endif
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if (mkdir(path, 0700) || mkdir(spath, 0700) || mkdir(bpath, 0700)) {
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pr_perror("mkdir");
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return 1;
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}
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pid = fork();
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if (pid < 0) {
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pr_perror("fork");
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return 1;
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}
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if (pid == 0) {
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if (unshare(CLONE_NEWNS)) {
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pr_perror("unshare");
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return 1;
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}
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if (mount(path, bpath, NULL, MS_BIND, NULL)) {
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pr_perror("mount");
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return 1;
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}
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task_waiter_complete(&t, 1);
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task_waiter_wait4(&t, 2);
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if (umount(spath)) {
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task_waiter_complete(&t, 2);
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fail("umount");
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return 1;
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}
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task_waiter_complete(&t, 3);
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task_waiter_wait4(&t, 4);
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return 0;
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}
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task_waiter_wait4(&t, 1);
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if (mount("test", spath, "tmpfs", 0, NULL)) {
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pr_perror("mount");
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return 1;
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}
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test_daemon();
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test_waitsig();
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task_waiter_complete(&t, 2);
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task_waiter_wait4(&t, 3);
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if (umount(bpath)) {
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task_waiter_complete(&t, 2);
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fail("umount");
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return 1;
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}
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task_waiter_complete(&t, 4);
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if (waitpid(pid, &status, 0) != pid) {
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pr_perror("waitpid %d", pid);
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return 1;
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}
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if (status) {
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pr_perror("%d/%d/%d/%d", WIFEXITED(status), WEXITSTATUS(status), WIFSIGNALED(status), WTERMSIG(status));
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return 1;
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}
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pass();
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return 0;
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}
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