mirror of
https://github.com/checkpoint-restore/criu.git
synced 2026-07-21 01:06:58 +00:00
df81b884d4
...and fix misprints that weren't caught before. I guess, I never fixed that much (possible) bugs by one commit, heh. Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com> Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
130 lines
2.4 KiB
C
130 lines
2.4 KiB
C
#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <string.h>
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#include <sys/wait.h>
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#include "zdtmtst.h"
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const char *test_doc = "Open r/w and unlink file, and fork before migration;\n"
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"check that the child can write to it and the parent\n"
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"can read from it after migration";
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const char *test_author = "Roman Kagan <rkagan@parallels.com>";
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char *filename;
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TEST_OPTION(filename, string, "file name", 1);
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int main(int argc, char ** argv)
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{
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int fd, child_fd, ret;
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pid_t pid;
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uint32_t crc;
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uint8_t buf[1000000];
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task_waiter_t t;
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test_init(argc, argv);
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fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, 0644);
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if (fd < 0) {
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pr_perror("can't open %s", filename);
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exit(1);
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}
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child_fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, 0644);
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if (child_fd < 0) {
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pr_perror("can't open %s", filename);
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exit(1);
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}
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if (unlink(filename)) {
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pr_perror("can't unlink %s", filename);
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exit(1);
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}
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task_waiter_init(&t);
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pid = fork();
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if (pid < 0) {
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pr_perror("can't fork");
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exit(1);
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}
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if (pid == 0) { /* child writes to the unlinked file and returns */
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close(fd);
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task_waiter_complete_current(&t);
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test_waitsig();
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crc = ~0;
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datagen(buf, sizeof(buf), &crc);
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if (write(child_fd, buf, sizeof(buf)) != sizeof(buf))
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_exit(errno);
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close(child_fd);
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_exit(0);
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} else
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task_waiter_wait4(&t, pid);
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close(child_fd);
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test_daemon();
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test_waitsig();
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if (kill(pid, SIGTERM)) {
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fail("terminating the child failed: %m\n");
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goto out;
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}
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if (wait(&ret) != pid) {
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fail("wait() returned wrong pid %d: %m\n", pid);
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goto out;
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}
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if (WIFEXITED(ret)) {
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ret = WEXITSTATUS(ret);
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if (ret) {
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fail("child exited with nonzero code %d (%s)\n", ret, strerror(ret));
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goto out;
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}
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}
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if (WIFSIGNALED(ret)) {
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fail("child exited on unexpected signal %d\n", WTERMSIG(ret));
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goto out;
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}
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if (lseek(fd, 0, SEEK_SET) < 0) {
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fail("lseeking to the beginning of file failed: %m\n");
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goto out;
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}
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if (read(fd, buf, sizeof(buf)) != sizeof(buf)) {
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fail("can't read %s: %m\n", filename);
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goto out;
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}
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crc = ~0;
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if (datachk(buf, sizeof(buf), &crc)) {
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fail("CRC mismatch\n");
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goto out;
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}
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if (close(fd)) {
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fail("close failed: %m\n");
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goto out_noclose;
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}
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if (unlink(filename) != -1 || errno != ENOENT) {
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fail("file %s should have been deleted before migration: unlink: %m\n",
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filename);
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goto out_noclose;
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}
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pass();
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out:
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close(fd);
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out_noclose:
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return 0;
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}
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