1*0f4c859eSApple OSS Distributions #include <stdlib.h>
2*0f4c859eSApple OSS Distributions
3*0f4c859eSApple OSS Distributions #include <pthread.h>
4*0f4c859eSApple OSS Distributions #include <sys/kern_control.h>
5*0f4c859eSApple OSS Distributions #include <sys/socket.h>
6*0f4c859eSApple OSS Distributions #include <sys/sys_domain.h>
7*0f4c859eSApple OSS Distributions #include <unistd.h>
8*0f4c859eSApple OSS Distributions
9*0f4c859eSApple OSS Distributions #include <darwintest.h>
10*0f4c859eSApple OSS Distributions
11*0f4c859eSApple OSS Distributions /* we should win the race in this window: */
12*0f4c859eSApple OSS Distributions #define NTRIES 200000
13*0f4c859eSApple OSS Distributions
14*0f4c859eSApple OSS Distributions static void *
connect_race(void * data)15*0f4c859eSApple OSS Distributions connect_race(void *data)
16*0f4c859eSApple OSS Distributions {
17*0f4c859eSApple OSS Distributions int *ps = data;
18*0f4c859eSApple OSS Distributions struct sockaddr_ctl sc = {
19*0f4c859eSApple OSS Distributions .sc_id = 1 /* com.apple.flow-divert */
20*0f4c859eSApple OSS Distributions };
21*0f4c859eSApple OSS Distributions int n;
22*0f4c859eSApple OSS Distributions
23*0f4c859eSApple OSS Distributions for (n = 0; n < NTRIES; ++n) {
24*0f4c859eSApple OSS Distributions connect(*ps, (const struct sockaddr *)&sc, sizeof(sc));
25*0f4c859eSApple OSS Distributions }
26*0f4c859eSApple OSS Distributions
27*0f4c859eSApple OSS Distributions return NULL;
28*0f4c859eSApple OSS Distributions }
29*0f4c859eSApple OSS Distributions
30*0f4c859eSApple OSS Distributions T_DECL(flow_div_doubleconnect_55917185, "Bad error path in double-connect for flow_divert_kctl_connect")
31*0f4c859eSApple OSS Distributions {
32*0f4c859eSApple OSS Distributions int s = -1;
33*0f4c859eSApple OSS Distributions int tmp_s;
34*0f4c859eSApple OSS Distributions struct sockaddr_ctl sc = {
35*0f4c859eSApple OSS Distributions .sc_id = 1 /* com.apple.flow-divert */
36*0f4c859eSApple OSS Distributions };
37*0f4c859eSApple OSS Distributions pthread_t t;
38*0f4c859eSApple OSS Distributions int n;
39*0f4c859eSApple OSS Distributions
40*0f4c859eSApple OSS Distributions T_SETUPBEGIN;
41*0f4c859eSApple OSS Distributions T_ASSERT_POSIX_ZERO(pthread_create(&t, NULL, connect_race, &s), NULL);
42*0f4c859eSApple OSS Distributions T_SETUPEND;
43*0f4c859eSApple OSS Distributions
44*0f4c859eSApple OSS Distributions for (n = 0; n < NTRIES; ++n) {
45*0f4c859eSApple OSS Distributions T_ASSERT_POSIX_SUCCESS(tmp_s = socket(AF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL), NULL);
46*0f4c859eSApple OSS Distributions
47*0f4c859eSApple OSS Distributions /*
48*0f4c859eSApple OSS Distributions * this bind will fail, but that's ok because it initialises
49*0f4c859eSApple OSS Distributions * kctl:
50*0f4c859eSApple OSS Distributions */
51*0f4c859eSApple OSS Distributions bind(tmp_s, (const struct sockaddr *)&sc, sizeof(sc));
52*0f4c859eSApple OSS Distributions
53*0f4c859eSApple OSS Distributions /* this is what we're racing the other thread for: */
54*0f4c859eSApple OSS Distributions s = tmp_s;
55*0f4c859eSApple OSS Distributions connect(s, (const struct sockaddr *)&sc, sizeof(sc));
56*0f4c859eSApple OSS Distributions
57*0f4c859eSApple OSS Distributions T_ASSERT_POSIX_SUCCESS(close(s), NULL);
58*0f4c859eSApple OSS Distributions s = -1;
59*0f4c859eSApple OSS Distributions }
60*0f4c859eSApple OSS Distributions
61*0f4c859eSApple OSS Distributions T_ASSERT_POSIX_ZERO(pthread_join(t, NULL), NULL);
62*0f4c859eSApple OSS Distributions T_PASS("flow_divert_kctl_connect race didn't trigger panic");
63*0f4c859eSApple OSS Distributions }
64