criu/test/zdtm/static/mntns_root_bind.c
Pavel Emelyanov 2e13f1f029 test: Get rid of live directory
Move static and transition into zdtm top. We can't move all the micro
tests themselves, as we need to distinguish static from non static (zdtm.py
makes additional checks on static ones).

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
2016-02-20 13:40:52 +03:00

123 lines
2.5 KiB
C

#define _GNU_SOURCE
#include <stdbool.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <stdio.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sched.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <limits.h>
#include "zdtmtst.h"
#ifndef CLONE_NEWNS
#define CLONE_NEWNS 0x00020000
#endif
const char *test_doc = "Check bind-mouns of the root mount";
const char *test_author = "Andrew Vagin <avagin@parallels.com>";
char *dirname;
TEST_OPTION(dirname, string, "directory name", 1);
int main(int argc, char **argv)
{
char subdir1[PATH_MAX], path[PATH_MAX], bpath[PATH_MAX], spath[PATH_MAX], bspath[PATH_MAX];
char subdir2[PATH_MAX], bsubdir2[PATH_MAX];
pid_t pid;
int status;
task_waiter_t t;
test_init(argc, argv);
task_waiter_init(&t);
mount(NULL, "/", NULL, MS_SHARED, NULL);
snprintf(subdir1, sizeof(subdir1), "%s/subdir1", dirname);
snprintf(path, sizeof(path), "%s/test", subdir1);
snprintf(bpath, sizeof(bpath), "%s/test.bind", subdir1);
snprintf(spath, sizeof(spath), "%s/test/sub", subdir1);
snprintf(bspath, sizeof(bspath), "%s/test.bind/sub", subdir1);
snprintf(subdir2, sizeof(subdir2), "%s/subdir2", dirname);
snprintf(bsubdir2, sizeof(bsubdir2), "%s/bsubdir2", dirname);
if (mkdir(dirname, 0700) ||
mkdir(subdir1, 0777) ||
mkdir(subdir2, 0777) ||
mkdir(bsubdir2, 0777) ||
mkdir(path, 0700) ||
mkdir(spath, 0700) ||
mkdir(bpath, 0700)) {
pr_perror("mkdir");
return 1;
}
pid = fork();
if (pid < 0) {
pr_perror("fork");
return 1;
}
if (pid == 0) {
unshare(CLONE_NEWNS);
if (mount(path, bpath, NULL, MS_BIND, NULL)) {
pr_perror("mount");
return 1;
}
task_waiter_complete(&t, 1);
task_waiter_wait4(&t, 2);
if (access(bspath, F_OK)) {
fail("%s isn't accessiable", bspath);
return 1;
}
if (umount2(bpath, MNT_DETACH)) {
fail("umount");
return 1;
}
return 0;
}
task_waiter_wait4(&t, 1);
if (mount("test", spath, "tmpfs", 0, NULL)) {
pr_perror("mount");
return 1;
}
#ifdef ROOT_BIND02
if (mount(subdir2, bsubdir2, NULL, MS_BIND, NULL)) {
pr_perror("Unable to mount %s to %s", subdir2, bsubdir2);
return 1;
}
#endif
test_daemon();
test_waitsig();
task_waiter_complete(&t, 2);
if (waitpid(pid, &status, 0) != pid) {
pr_perror("waitpid %d", pid);
return 1;
}
if (status) {
pr_perror("%d/%d/%d/%d", WIFEXITED(status), WEXITSTATUS(status), WIFSIGNALED(status), WTERMSIG(status));
return 1;
}
pass();
return 0;
}