mirror of
https://github.com/checkpoint-restore/criu
synced 2025-08-22 09:58:09 +00:00
93dd984ca0
Acked-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Adrian Reber <areber@redhat.com>
129 lines
2.4 KiB
C
129 lines
2.4 KiB
C
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <signal.h>
|
|
#include <string.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include "zdtmtst.h"
|
|
|
|
const char *test_doc = "Open r/w and unlink file, and fork before migration;\n"
|
|
"check that the child can write to it and the parent\n"
|
|
"can read from it after migration";
|
|
const char *test_author = "Roman Kagan <rkagan@parallels.com>";
|
|
|
|
char *filename;
|
|
TEST_OPTION(filename, string, "file name", 1);
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int fd, child_fd, ret;
|
|
pid_t pid;
|
|
uint32_t crc;
|
|
uint8_t buf[1000000];
|
|
task_waiter_t t;
|
|
|
|
test_init(argc, argv);
|
|
|
|
fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, 0644);
|
|
if (fd < 0) {
|
|
pr_perror("can't open %s", filename);
|
|
exit(1);
|
|
}
|
|
|
|
child_fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, 0644);
|
|
if (child_fd < 0) {
|
|
pr_perror("can't open %s", filename);
|
|
exit(1);
|
|
}
|
|
|
|
if (unlink(filename)) {
|
|
pr_perror("can't unlink %s", filename);
|
|
exit(1);
|
|
}
|
|
|
|
task_waiter_init(&t);
|
|
|
|
pid = fork();
|
|
if (pid < 0) {
|
|
pr_perror("can't fork");
|
|
exit(1);
|
|
}
|
|
|
|
if (pid == 0) { /* child writes to the unlinked file and returns */
|
|
close(fd);
|
|
task_waiter_complete_current(&t);
|
|
test_waitsig();
|
|
|
|
crc = ~0;
|
|
datagen(buf, sizeof(buf), &crc);
|
|
if (write(child_fd, buf, sizeof(buf)) != sizeof(buf))
|
|
_exit(errno);
|
|
|
|
close(child_fd);
|
|
_exit(0);
|
|
} else
|
|
task_waiter_wait4(&t, pid);
|
|
|
|
close(child_fd);
|
|
|
|
test_daemon();
|
|
test_waitsig();
|
|
|
|
if (kill(pid, SIGTERM)) {
|
|
fail("terminating the child failed");
|
|
goto out;
|
|
}
|
|
|
|
if (wait(&ret) != pid) {
|
|
fail("wait() returned wrong pid %d", pid);
|
|
goto out;
|
|
}
|
|
|
|
if (WIFEXITED(ret)) {
|
|
ret = WEXITSTATUS(ret);
|
|
if (ret) {
|
|
fail("child exited with nonzero code %d (%s)", ret, strerror(ret));
|
|
goto out;
|
|
}
|
|
}
|
|
if (WIFSIGNALED(ret)) {
|
|
fail("child exited on unexpected signal %d", WTERMSIG(ret));
|
|
goto out;
|
|
}
|
|
|
|
if (lseek(fd, 0, SEEK_SET) < 0) {
|
|
fail("lseeking to the beginning of file failed");
|
|
goto out;
|
|
}
|
|
|
|
if (read(fd, buf, sizeof(buf)) != sizeof(buf)) {
|
|
fail("can't read %s", filename);
|
|
goto out;
|
|
}
|
|
|
|
crc = ~0;
|
|
if (datachk(buf, sizeof(buf), &crc)) {
|
|
fail("CRC mismatch");
|
|
goto out;
|
|
}
|
|
|
|
if (close(fd)) {
|
|
fail("close failed");
|
|
goto out_noclose;
|
|
}
|
|
|
|
if (unlink(filename) != -1 || errno != ENOENT) {
|
|
fail("file %s should have been deleted before migration: unlink", filename);
|
|
goto out_noclose;
|
|
}
|
|
|
|
pass();
|
|
|
|
out:
|
|
close(fd);
|
|
out_noclose:
|
|
return 0;
|
|
}
|