1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <unistd.h>
#include <syscall.h>
#include <sys/wait.h>
#include "zdtmtst.h"
const char *test_doc = "Check, that stopped tasts are restored correctly";
const char *test_author = "Andrew Vagin <avagin@parallels.com>";
int main(int argc, char **argv)
{
pid_t pid;
siginfo_t infop;
int p[2], ret, status;
test_init(argc, argv);
if (pipe(p)) {
pr_perror("Unable to create pipe");
return 1;
}
pid = test_fork();
if (pid < 0)
return -1;
else if (pid == 0) {
char c;
close(p[1]);
ret = read(p[0], &c, 1);
if (ret != 1) {
pr_perror("Unable to read: %d", ret);
return 1;
}
return 0;
}
close(p[0]);
kill(pid, SIGSTOP);
if (waitid(P_PID, pid, &infop, WNOWAIT | WSTOPPED) < 0) {
pr_perror("waitid");
return 1;
}
#ifdef ZDTM_STOPPED_TKILL
syscall(__NR_tkill, pid, SIGSTOP);
#endif
#ifdef ZDTM_STOPPED_KILL
kill(pid, SIGSTOP);
#endif
write(p[1], "0", 1);
close(p[1]);
test_daemon();
test_waitsig();
// Return immediately if child run or stopped(by SIGSTOP)
if (waitpid(pid, &status, WUNTRACED | WCONTINUED) == -1) {
pr_perror("Unable to wait child");
goto out;
}
if (WIFSTOPPED(status))
test_msg("The process stopped\n");
else {
fail("The process doesn't stopped");
goto out;
}
kill(pid, SIGCONT);
if (waitpid(pid, &status, 0) == -1) {
pr_perror("Unable to wait child");
goto out;
}
if (WIFEXITED(status))
pass();
else
fail("The process doesn't continue");
out:
return 0;
}
|
