1*d8b80295SApple OSS Distributions #include <stdlib.h>
2*d8b80295SApple OSS Distributions
3*d8b80295SApple OSS Distributions #include <pthread.h>
4*d8b80295SApple OSS Distributions #include <sys/kern_control.h>
5*d8b80295SApple OSS Distributions #include <sys/socket.h>
6*d8b80295SApple OSS Distributions #include <sys/sys_domain.h>
7*d8b80295SApple OSS Distributions #include <unistd.h>
8*d8b80295SApple OSS Distributions
9*d8b80295SApple OSS Distributions #include <darwintest.h>
10*d8b80295SApple OSS Distributions
11*d8b80295SApple OSS Distributions /* we should win the race in this window: */
12*d8b80295SApple OSS Distributions #define NTRIES 200000
13*d8b80295SApple OSS Distributions
14*d8b80295SApple OSS Distributions static void *
connect_race(void * data)15*d8b80295SApple OSS Distributions connect_race(void *data)
16*d8b80295SApple OSS Distributions {
17*d8b80295SApple OSS Distributions int *ps = data;
18*d8b80295SApple OSS Distributions struct sockaddr_ctl sc = {
19*d8b80295SApple OSS Distributions .sc_id = 1 /* com.apple.flow-divert */
20*d8b80295SApple OSS Distributions };
21*d8b80295SApple OSS Distributions int n;
22*d8b80295SApple OSS Distributions
23*d8b80295SApple OSS Distributions for (n = 0; n < NTRIES; ++n) {
24*d8b80295SApple OSS Distributions connect(*ps, (const struct sockaddr *)&sc, sizeof(sc));
25*d8b80295SApple OSS Distributions }
26*d8b80295SApple OSS Distributions
27*d8b80295SApple OSS Distributions return NULL;
28*d8b80295SApple OSS Distributions }
29*d8b80295SApple OSS Distributions
30*d8b80295SApple OSS Distributions T_DECL(flow_div_doubleconnect_55917185, "Bad error path in double-connect for flow_divert_kctl_connect")
31*d8b80295SApple OSS Distributions {
32*d8b80295SApple OSS Distributions int s = -1;
33*d8b80295SApple OSS Distributions int tmp_s;
34*d8b80295SApple OSS Distributions struct sockaddr_ctl sc = {
35*d8b80295SApple OSS Distributions .sc_id = 1 /* com.apple.flow-divert */
36*d8b80295SApple OSS Distributions };
37*d8b80295SApple OSS Distributions pthread_t t;
38*d8b80295SApple OSS Distributions int n;
39*d8b80295SApple OSS Distributions
40*d8b80295SApple OSS Distributions T_SETUPBEGIN;
41*d8b80295SApple OSS Distributions T_ASSERT_POSIX_ZERO(pthread_create(&t, NULL, connect_race, &s), NULL);
42*d8b80295SApple OSS Distributions T_SETUPEND;
43*d8b80295SApple OSS Distributions
44*d8b80295SApple OSS Distributions for (n = 0; n < NTRIES; ++n) {
45*d8b80295SApple OSS Distributions T_ASSERT_POSIX_SUCCESS(tmp_s = socket(AF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL), NULL);
46*d8b80295SApple OSS Distributions
47*d8b80295SApple OSS Distributions /*
48*d8b80295SApple OSS Distributions * this bind will fail, but that's ok because it initialises
49*d8b80295SApple OSS Distributions * kctl:
50*d8b80295SApple OSS Distributions */
51*d8b80295SApple OSS Distributions bind(tmp_s, (const struct sockaddr *)&sc, sizeof(sc));
52*d8b80295SApple OSS Distributions
53*d8b80295SApple OSS Distributions /* this is what we're racing the other thread for: */
54*d8b80295SApple OSS Distributions s = tmp_s;
55*d8b80295SApple OSS Distributions connect(s, (const struct sockaddr *)&sc, sizeof(sc));
56*d8b80295SApple OSS Distributions
57*d8b80295SApple OSS Distributions T_ASSERT_POSIX_SUCCESS(close(s), NULL);
58*d8b80295SApple OSS Distributions s = -1;
59*d8b80295SApple OSS Distributions }
60*d8b80295SApple OSS Distributions
61*d8b80295SApple OSS Distributions T_ASSERT_POSIX_ZERO(pthread_join(t, NULL), NULL);
62*d8b80295SApple OSS Distributions T_PASS("flow_divert_kctl_connect race didn't trigger panic");
63*d8b80295SApple OSS Distributions }
64