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#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <fcntl.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <linux/limits.h>
#include "zdtmtst.h"
const char *test_doc = "Test that all data can be restored";
const char *test_author = "Andrey Vagin <avagin@parallels.com>";
#define TEST_STRING "Hello world"
int main(int argc, char **argv)
{
int pfd[2], pfd_dup[2], pfd_rop[2];
char path[PATH_MAX];
int ret;
uint8_t buf[4096];
uint32_t crc;
int flags, size = 0;
test_init(argc, argv);
crc = ~0;
datagen(buf, sizeof(buf), &crc);
ret = pipe(pfd);
if (ret) {
pr_perror("pipe() failed");
return 1;
}
pfd_dup[0] = dup(pfd[0]);
pfd_dup[1] = dup(pfd[1]);
snprintf(path, PATH_MAX, "/proc/self/fd/%d", pfd[0]);
pfd_rop[0] = open(path, O_RDONLY);
snprintf(path, PATH_MAX, "/proc/self/fd/%d", pfd[1]);
pfd_rop[1] = open(path, O_WRONLY);
if (pfd_rop[0] == -1 || pfd_rop[1] == -1 || pfd_dup[0] == -1 || pfd_dup[1] == -1) {
pr_perror("dup() failed");
return 1;
}
flags = fcntl(pfd[1], F_GETFL, 0);
if (flags == -1) {
pr_perror("fcntl() failed");
return 1;
}
ret = fcntl(pfd[1], F_SETFL, flags | O_NONBLOCK);
if (ret == -1) {
pr_perror("fcntl() failed");
return 1;
}
while (1) {
ret = write(pfd[1], buf, sizeof(buf));
if (ret == -1) {
if (errno == EAGAIN)
break;
pr_perror("write() failed");
goto err;
}
size += ret;
}
test_daemon();
test_waitsig();
flags = fcntl(pfd[1], F_GETFL, 0);
if (!(flags & O_NONBLOCK)) {
pr_perror("O_NONBLOCK is absent");
goto err;
}
flags = fcntl(pfd_dup[1], F_GETFL, 0);
if (!(flags & O_NONBLOCK)) {
pr_perror("O_NONBLOCK is absent");
goto err;
}
flags = fcntl(pfd_rop[1], F_GETFL, 0);
if (flags & O_NONBLOCK) {
pr_perror("O_NONBLOCK appeared");
goto err;
}
if (close(pfd[1]) == -1) {
pr_perror("close() failed");
goto err;
}
close(pfd_dup[1]);
close(pfd_rop[1]);
while (1) {
ret = read(pfd[0], buf, sizeof(buf));
if (ret == 0)
break;
if (ret == -1) {
pr_perror("read() failed");
goto err;
}
size -= ret;
crc = ~0;
ret = datachk(buf, sizeof(buf), &crc);
if (ret) {
fail("CRC mismatch");
goto err;
}
}
if (size)
goto err;
pass();
return 0;
err:
fail();
return 1;
}
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