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https://github.com/checkpoint-restore/criu.git
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5a49b9e216
This test suite contains many small test cases for different subsystems. Example of execution: # make busyloop00.pid # ../../../../crtools -d -t `cat busyloop00.pid` # kill -9 `cat busyloop00.pid` # ../../../../crtools -r -t `cat busyloop00.pid` # cat busyloop00.out PASS Signed-off-by: Andrey Vagin <avagin@openvz.org> Acked-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
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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err("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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err("can't make directory %s: %m\n", dirname);
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exit(1);
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}
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if (mknod(path, mode, dev)) {
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err("can't make device file \"%s\": %m\n", 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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err("can't open %s: %m\n", 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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err("can't mount tmpfs over %s: %m", 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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