mir/criu
2
0
Fork 0
mirror of https://github.com/checkpoint-restore/criu synced 2025-08-31 06:15:24 +00:00
Code Issues Releases Wiki Activity

zdtm: add new test case for "pipe inversion"

Browse Source 
Probably all of you know about "lock inversion". We have a similar
problem on restoring pipes.

This test case creates two process and two pipes.
process 1:
	11: pipe1 (w)
	12: pipe2 (r)
process 2:
	11: pipe2 (r)
	12: pipe1 (w)

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
This commit is contained in:
Andrey Vagin
2011-12-06 12:44:00 +04:00
committed by Cyrill Gorcunov
parent d924a240ff
commit a5439d5fed
2 changed files with 107 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
test/zdtm/live/static/Makefile
View File

@@ -23,6 +23,7 @@ TST_NOFILE = \
inotify_system_nodel \
shm \
ptrace_sig \
pipe00 \
# jobctl00 \
TST_FILE = \

106
test/zdtm/live/static/pipe00.c Normal file
View File

@@ -0,0 +1,106 @@
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <sys/wait.h>
#include "zdtmtst.h"
const char *test_doc = "Lock inversion";
const char *test_author = "Andrey Vagin <avagin@parallels.com>";
#define TEST_STRING "Hello world"
int main(int argc, char ** argv)
{
int pipe1[2];
int pipe2[2];
int ret;
pid_t pid;
char buf[sizeof(TEST_STRING)];
test_init(argc, argv);
ret = pipe(pipe1);
if (ret)
return 1;
ret = pipe(pipe2);
if (ret)
return 1;
pid = test_fork();
if (pid < 0) {
err("Can't fork");
exit(1);
} else if (pid == 0) {
if (dup2(pipe1[1], 11) == -1 || dup2(pipe2[0], 12) == -1) {
err("dup2 failed");
return 1;
}
} else {
if (dup2(pipe1[0], 12) == -1 || dup2(pipe2[1], 11) == -1) {
err("dup2 failed");
goto err;
}
}
close(pipe2[0]);
close(pipe2[1]);
close(pipe1[0]);
close(pipe1[1]);
if (pid > 0) {
int status;
test_daemon();
while (test_go())
;
ret = write(11, TEST_STRING, sizeof(TEST_STRING));
if (ret != sizeof(TEST_STRING)) {
err("write failed: %d", ret);
goto err;
}
close(11);
ret = read(12, buf, sizeof(TEST_STRING));
if (ret != sizeof(TEST_STRING)) {
err("read failed: %d", ret);
goto err;
}
if (strcmp(TEST_STRING, buf)) {
err("data curruption");
goto err;
}
ret = wait(&status);
if (ret == -1 || !WIFEXITED(status) || WEXITSTATUS(status)) {
kill(pid, SIGKILL);
goto err;
}
pass();
} else {
ret = read(12, buf, sizeof(TEST_STRING));
if (ret != sizeof(TEST_STRING)) {
err("read failed: %d", ret);
return 1;
}
ret = write(11, TEST_STRING, sizeof(TEST_STRING));
if (ret != sizeof(TEST_STRING)) {
err("write failed: %d", ret);
return 1;
}
close(11);
if (strcmp(TEST_STRING, buf)) {
err("data curruption");
return 1;
}
}
return 0;
err:
err("FAIL");
return 1;
}