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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
#include <sys/types.h>
#include <sys/mman.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <dirent.h>
#include <string.h>
#include <sys/wait.h>
#include "zdtmtst.h"
#include "lock.h"
const char *test_doc = "Check that criu closes up all its descriptors";
const char *test_author = "Andrew Vagin <avagin@parallels.com>";
int main(int argc, char **argv)
{
struct dirent *de;
char pfd[PATH_MAX];
mutex_t *lock;
int status;
pid_t pid;
DIR *d;
test_init(argc, argv);
lock = mmap(NULL, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0);
if (lock == MAP_FAILED)
return 1;
mutex_init(lock);
mutex_lock(lock);
pid = fork();
if (pid < 0) {
pr_perror("fork()");
return 1;
}
if (pid == 0) {
d = opendir("/proc/self/fd");
if (d == NULL)
return 1;
while ((de = readdir(d))) {
int fd;
if (de->d_name[0] == '.')
continue;
fd = atoi(de->d_name);
if (dirfd(d) == fd)
continue;
close(fd);
}
closedir(d);
mutex_unlock(lock);
test_waitsig();
return 0;
}
mutex_lock(lock);
test_daemon();
test_waitsig();
snprintf(pfd, sizeof(pfd), "/proc/%d/fd", pid);
d = opendir(pfd);
if (d == NULL)
return 2;
while ((de = readdir(d))) {
int ret;
if (de->d_name[0] == '.')
continue;
ret = readlinkat(dirfd(d), de->d_name, pfd, sizeof(pfd) - 1);
if (ret < 0) {
pr_perror("readlink");
ret = 0;
}
pfd[ret] = '\0';
fail("Unexpected fd: %s -> %s", de->d_name, pfd);
return 1;
}
closedir(d);
kill(pid, SIGTERM);
if (waitpid(pid, &status, 0) != pid) {
pr_perror("waitpid()");
return 1;
}
if (status != 0) {
fail("%d:%d:%d:%d", WIFEXITED(status), WEXITSTATUS(status), WIFSIGNALED(status), WTERMSIG(status));
return 1;
}
pass();
return 0;
}
|
