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https://github.com/checkpoint-restore/criu.git
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2e13f1f029
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>
92 lines
1.7 KiB
C
92 lines
1.7 KiB
C
#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "zdtmtst.h"
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const char *test_doc = "Check that we can migrate with a device special file "
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"open in a directory which has been mounted over by "
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"another filesystem";
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const char *test_author = "Roman Kagan <rkagan@parallels.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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int fd;
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char path[256];
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struct stat st;
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/* /dev/null params - sure to exist in a VPS */
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mode_t mode = S_IFCHR | 0700;
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dev_t dev = makedev(1, 3);
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test_init(argc, argv);
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if (snprintf(path, sizeof(path), "%s/foo", dirname) >= sizeof(path)) {
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pr_perror("directory name \"%s\"is too long", dirname);
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exit(1);
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}
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if (mkdir(dirname, 0700)) {
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pr_perror("can't make directory %s", dirname);
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exit(1);
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}
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if (mknod(path, mode, dev)) {
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pr_perror("can't make device file \"%s\"", path);
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exit(1);
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}
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fd = open(path, O_RDWR);
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if (fd < 0) {
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pr_perror("can't open %s", path);
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goto rmdir;
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}
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if (mount("rien", dirname, "tmpfs", 0, 0) < 0) {
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pr_perror("can't mount tmpfs over %s", dirname);
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goto cleanup;
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}
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test_daemon();
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test_waitsig();
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if (umount(dirname) < 0) {
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fail("can't umount %s: %m", dirname);
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goto cleanup;
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}
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if (close(fd) < 0) {
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fail("can't close %s: %m", path);
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goto unlink;
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}
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if (stat(path, &st) < 0) {
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fail("can't stat %s: %m", path);
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goto unlink;
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}
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if (st.st_mode != mode || st.st_rdev != dev) {
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fail("%s is no longer the device file we had");
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goto unlink;
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}
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if (unlink(path) < 0) {
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fail("can't unlink %s: %m", path);
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goto rmdir;
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}
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pass();
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goto rmdir;
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cleanup:
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close(fd);
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unlink:
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unlink(path);
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rmdir:
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rmdir(dirname);
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return 0;
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}
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